WO2014094244A1

WO2014094244A1 - Foldable frame

Info

Publication number: WO2014094244A1
Application number: PCT/CN2012/086890
Authority: WO
Inventors: 黄虎生
Original assignee: 深圳市康腾体育用品有限公司
Priority date: 2012-12-18
Filing date: 2012-12-18
Publication date: 2014-06-26
Also published as: DE112012004037T5

Abstract

A foldable frame (10) comprises a plurality of connecting rods (11) hinged with each other. Two connected connecting rods (11) are in angular connection with each other through a wedging pin (15), wherein a tenon (12) projects from an end portion of one connecting rod (11), and a mortise (13) for receiving the wedging pin (15) and the tenon (12) is formed at an end portion of the other connecting rod (11); the tenon (12) is provided with a wedging groove (121) extending axially from the connecting rod (11); a wedging strip (151) inserted and received in the wedging groove (121) projects from a bottom surface of the wedging pin (15); a pair of lugs (152) project from two sides of the wedging pin (15); and grooves (132) for receiving the pair of lugs (152) are correspondingly formed on two sidewalls of the mortise (13). The foldable frame (10) is characterized in that the connected connecting rods (11) are closely connected through engagement of the mortise (13) and the tenon (12) and are strengthened through the wedging pin (15), so that the stability of the frame (10) is improved, and such a structure is easy and convenient to fold and assemble.

Description

Foldable frame

Technical field

The invention belongs to the technical field of frames, and in particular relates to a foldable frame.

Background technique

Nowadays, sports become an important part of people's daily life, and various sports competitions bring fun to people's lives. In many sports, For example, football, hockey, tennis, etc., will use the grid. Especially football, you need a goal with a net.

For ease of carrying, these goal frames are typically in the form of a foldable structure in which hinged connections are typically used. However, when the hinge is connected, the frame is easily pushed down or easily collapsed or dumped when subjected to a collision, which is unstable and brings a certain unsafe factor to the user.

technical problem

In view of this, a foldable frame that is easy to fold, convenient to carry, and stable and safe in construction is provided.

Technical solution

A foldable frame comprising a plurality of connecting rods hingedly connected, the two connected connecting rods being angularly connected by a splitting pin, and one of the connecting connecting rods protruding from the end of the connecting rod The other end of the connecting rod has a groove for receiving the plunging pin and the boring head, the boring head has a groove extending axially from the connecting rod, and the bottom surface of the plunging pin is convexly inserted and received A pair of lugs protrude from two sides of the sluice pin, and two side walls of the sipe are correspondingly provided with grooves for receiving the pair of lugs.

Beneficial effect

The above-mentioned foldable frame is tightly connected by the joint of the tongue and the hoe, and is reinforced by the plunging pin. Before folding, the squeezing pin is first taken out or partially withdrawn, the hoe is inserted into the sipe and rotated with the hinge. At the right angle, the slamming pin is inserted again, that is, the two rods are firmly connected. Since the insertion pin has a lug that can be inserted into the groove of the side wall of the gutter, even if the external impact is forced, for example, forcing the angle between the two connecting rods to become small, the pin and its lug can catch the two rods. Relative rotation or relative tilting around the hinge improves the stability of the frame and is highly secure, and such a structure makes folding and opening changes easier and faster.

DRAWINGS

1 is a schematic perspective view of a foldable frame according to a first embodiment of the present invention.

Figure 2 is a partially enlarged schematic view of the connecting rod connection of Figure 1.

Figure 3 is an exploded perspective view of the partial enlarged structure of Figure 2.

Fig. 4 is a perspective view showing the structure of a foldable frame according to a second embodiment of the present invention.

Fig. 5 is an exploded perspective view showing the telescopic structure of the longer connecting rod of Fig. 4.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to Figures 1, 2 and 3, there is shown a partial structure of the foldable frame 10 and its joints in accordance with an embodiment of the present invention. Foldable frame 10 includes a plurality of connecting rods 11 hingedly connected, and the two connecting rods 11 connected are connected at an angle through a plunging pin 15, and one end of the connecting rod 11 protrudes from a hoe 12 The other end of the connecting rod 11 has a tongue and groove 13 for receiving the plunging pin 15 and the boring head 12, and the boring head 12 has a groove 121 extending axially from the connecting rod, and the bottom surface of the pin 15 is inserted. A pair of ribs 151 are inserted into the grooving groove 121, and a pair of lugs 152 are protruded from opposite sides of the shackle pin 15. The two side walls of the sipe 13 are correspondingly opened for receiving the pair of lugs. Groove 132 of 152.

Foldable frame 10 It can be a goal frame in various ball sports in sports, such as a soccer goal net frame, or other frames suitable for folding and opening, such as a tent frame. The embodiment of the invention takes the goal frame as an example, and its structure is as shown in the figure. As shown in Fig. 1, there are two

lateral side bars

101, 102 and two cross bars 103 connected between the two

side uprights

101, 102, respectively, and two

side uprights

101, 102 The connected

side bottom rods

104, 105 and the rear bottom rod 106 connected to the two

side bottom rods

104, 105 are provided with a net (not shown) on the frame, and the two ends of the cross bar 103 and the side poles respectively The top ends of 101, 102 are connected, one end of each side bottom rod 104/105 is connected with the bottom ends of the

side uprights

101, 102, and the other end is respectively connected with the two ends of the rear bottom rod 106, the cross rod 103 may also be referred to as the ram portion of the frame 10.

In the embodiment shown, each of the two connected connecting rods 11 are connected at right angles. In this embodiment, each connecting rod 11 It is preferably made of a plastic material. A hinge 16 is provided inside the joint of the connecting rod 11, and the hinge 16 is fixed by a fastener such as a screw or a pin 17. Hinge 16 and fasteners 17 Both are preferably made of a plastic material. Therefore, the entire frame in the embodiment is made of a plastic material. When the goal is made into a goal, the entire goal and the net are made of non-metal materials, which saves cost and reduces weight on the one hand, and meets the requirements of environmental protection on the other hand. At present, many sports equipment is difficult to avoid using metal materials, which makes it difficult to reach environmental indicators in many places in the EU and abroad. This embodiment completely meets environmental protection requirements by using all plastic materials.

As shown in Figures 2 and 3, a partial enlarged structure of the connecting portion is shown. The lug 152 extends parallel to the purlin 151, and the purlin 151 The direction of extension is parallel to the axis of the connecting rod 11 (the straight connecting rod in this embodiment). Thus, it is convenient to break the slamming pin 15 into the hoe 12 and the sill 13 And, when subjected to an external force, the connected connecting rod 11 is compressed or opened like two sides of a corner, such as the side upright 101 and the side bottom rod 104, when an external force collides against the side upright 101, the side upright The 101 side shank 104 rotates toward the corner, that is, it is folded in half, and the direction of the force is in the axial direction. Therefore, these components are arranged along the axial direction to enhance the stability. Preferably, the lug 152 has an extended length less than the stringer 151 The length of the side edge of the face is half, that is, the lug 152 is a section, which can be regarded as a bump, which should not be too short, too short and not firm. The lug 152 extends inwardly from the outer edge in the length direction, i.e., the lug 152 It is disposed on the outer side of the insertion pin 15, and may of course be disposed in the middle or the inner side or even the extension length thereof is the length of the entire side. In this embodiment, the insertion pin 15 is not required to be withdrawn when opening and folding, thereby the lug 152 Set as far as possible on the edge so that when opening and folding, the slamming pin 15 has more space to remain in the sipe 13 where the lug 152 is not provided, and the rafter 151 held in the grooving 151 Part is longer. Since the slamming pin 15 is not removed, the slamming pin 15 is easily lost when it is removed, and it is not necessary to find or place the squeezing pin 15 when disassembling and folding, which is convenient for operation. Further, the lug 152 It extends laterally from the lowermost position on the side of the squeezing pin 15, i.e., the bottom surface of the lug 152 (the lower surface in contact with the recess 132) and the bottom surface 150 of the plunging pin 15 (the sill 151 is protruded) The face is flush and is the same horizontal plane, which improves the structural strength of the lug 152 and does not break when the connecting rod 11 is hit by an external force.

The gutter 121 extends along the axial direction of the connecting rod 11, and the width of the groove bottom of the groove 121 is larger than the width of the notch, and the purlin 151 The top surface is in contact with the groove bottom of the groove 121, and the top surface width of the beam 151 is larger than the width of the root of the stringer 151 to cause the stringer 151 to be caught in the groove 121. With this structure, the pin 15 will be broken. It is stuck in the skull 12 . For example, the cross section of the gutter 121 in a direction perpendicular to the axis of the connecting rod 11 is tapered from the bottom of the groove to the notch, and the purlin 151 is perpendicular to the connecting rod 11 The cross section in the direction of the axis is a shape that tapers from the top to the root. Of course, the gutter 121 and the stringer 151 can also adopt other specific structural forms, for example, the gutter 121 is perpendicular to the connecting rod 11 The cross section in the direction of the axis is 'T' or '+', etc. Similarly, the cross section of the stringer 151 in the direction perpendicular to the axis of the connecting rod 11 is 'T' or '+', etc., and is not limited thereto. this. Purlin The length of the 151 and the gutter 121 is substantially the same, and the length of the gutter 121 along the axial direction of the connecting rod 11 may be the length in the axial direction of the hoe 12 (i.e., the surface of the hoe 12) The length in the axial direction), the length of the stringer 151 may be the length in the axial direction of the entire bottom surface 150. The insertion pin 15 has a bottom surface 150 of the stringer 151 and a head with a groove 121 12 The surface area of the surface 120 is preferably the same, and the two are closely attached to each other and are closely received in the gutter 13 . The stringer 151 is preferably located at the bottom surface of the pin 15 The central axis position, the gutter 121 is preferably located at the central axis of the surface 120 of the boring head 12.

As shown in Figures 2 and 3, the end of the connecting rod 11 having the gutter 13 is a bent end, and the gutter 13 The notch is opened at the end face of the bent end and extends through the peripheral surface of the connecting rod 11 opposite to the end surface. Thus, the other connecting rod 11 can be a straight connecting rod, and the tongue and groove 13 is along the straight connecting rod 11 The direction of insertion (i.e., the axial direction of the straight connecting rod 11) extends through the end surface of the boring head 12 and the peripheral surface opposite to the end surface opposite to the end surface. The groove bottom of the gutter 13 is perpendicular to the axis of the connecting rod 11, the groove 132 The direction of extension is parallel to the bottom of the groove, i.e., parallel to the axis of the connecting rod 11 inserted into the groove 13, i.e., the boring head 12 is inserted into the groove 13 in the axial direction of the straight connecting rod 11.

The hinged structure of the connected connecting rod 11 is mounted on the inner side of the bent end, and the tongue and groove 13 The notch edge on the outer side of the bent end is curved so that the lug 152 of the plunging pin 15 moves in close contact with the curved rim when the connecting connecting rod 11 is folded and opened, and the portion where the lug 152 is not provided is received in the gutter In the 13th, the opening and folding frame 10 can be realized even if the insertion pin 15 does not fall off.

Further, the intrusion pin 15 The contour of the outer surface is joined to the surface of the bent end, and the smooth connection transitions without any unevenness. The outer surface of the shackle pin 15 is exposed with corrugations so as to provide friction when folded or opened so as to be easier to break into the pin 15 Exit or press in.

4 and 5, a foldable frame 20 according to a second embodiment of the present invention. Multiple connecting rods in the frame 20 of the second embodiment 11 There is a longer one. The foldable frame 20 of the first embodiment has substantially the same structure as the foldable frame 10 of the second embodiment, but differs mainly in that it has a long connecting rod 11 , Figs. 4 and 5 and Figs. 1-3 The same elements in the same reference numerals are used. In the foldable frame 20 of the second embodiment, mainly the cross bar 203 and the rear bottom bar 206 are longer connecting bars.

The material of the cross bar 203 and the rear bottom bar 206 and the structure of the joint are the same as the cross bar 103 and the rear bottom bar 106 in the first embodiment. Basically the same, mainly the cross bar 203 and the rear bottom bar 206 are respectively provided with a telescopic structure 208 at a central position. The telescopic structure 208 of this embodiment includes a bump and a circumferential groove that can be engaged with each other, as shown in FIG. 5. As shown in the figure, the crossbar 203 includes two parts, a rod insertion portion 203a and a rod accommodating portion 203b. The rod accommodating portion 203b has a hollow structure, a hollow aperture and a rod insertion portion 203a. The outer diameters are matched so that the rod insertion portion 203a can be inserted into the rod accommodating portion 203b, thereby achieving expansion and contraction. The telescopic structure includes an inner surface of the hole provided in the rod housing portion 203b and a rod insertion portion Concave-convex snap structure on the outer surface of 203a. Specifically, for example, a circumferential groove 208a is provided on the inner ring surface of the rod accommodating portion 203b, and a convex portion 208b is provided on the outer surface of the rod insertion portion 203a. The bump 208b can be embedded in the circumferential groove 208a under the action of a thrust to connect the two portions of the cross bar 203. The bump 208b may be elastically compressible or in the rod housing portion 203b The inner surface of the hole is provided with an axially extending guide groove 208c from the end surface to the annular groove 208a so that the projection 208b can reach the circumferential groove 208a along the guide groove 208c. And turn into the ring groove 208a. The bumps 208b may be two or more, corresponding to the guide grooves 208c. A plurality of them are also provided, and the strength of the rod can be increased. When the folded structure is adopted, the hinge connection method can also be adopted, or other methods, and are not limited thereto.

Referring again to Figures 1 and 4, when folding, the two connected connecting rods 11 are folded in half, and the pin 15 is inserted into the pin. Part of the exit, the intrusion pin 15 remains in the gutter 13 without the pin 15 and its lug 152. The connecting rod 11 is caught and the connected connecting rods 11 can be folded together. figure 1 There are six connecting rods 11 in the order of folding, the side uprights 101 are folded in half with respect to the side bottom rods 104, and the side uprights 102 are folded in half opposite to the side bottom rods 105. After the four rods are folded in half, the crossbars 103 Close to (overlap) the rear bottom rod 106, then fold the side

bottom rods

104 and 105 opposite the rear bottom rod 106, and the

side uprights

101 and 102 are opposed to the crossbar 103. In the fold, these folds are folded in half at the joint, and finally the entire frame is folded into a length of only one rod, and the six rods are substantially overlapped, so that it is convenient to carry. For the frame 20 of the second embodiment, for the convenience of folding, a longer crossbar can be used first. The 203 and 206 are telescoped or folded, and the folding step is repeated. Similarly, after folding, there is only one rod (side rail or side bottom rod), and the six rods are substantially overlapped.

When the frame 10 needs to be opened (supported) again after folding, the pin 15 is also partially withdrawn (the lug 152) Exit or all exit, let the hoe 12 be inserted into the sump 13 , and then insert the smashing pin 15 against the hoe 12 into the grooving 13 , and the lug 152 is inserted along the groove 132 , and the rafter is inserted 151 Along the gutter 121, the opening is completed, that is, the frame 10 is installed or assembled, and for the frame 20, the longer connecting rod can be stretched and then extended.

The foldable frames 10, 20 are tightly connected by the joint of the tongue and the hoe, and the connecting rods 11 are tightly connected and passed through the pin 15 Reinforcement, before folding, the pin 15 is removed first or partially. When the hammer is inserted into the groove and the hinge is rotated to a right angle, the pin 15 is inserted, that is, the two rods are firmly connected. Due to the intrusion pin 15 The lug 152 can be inserted into the recess 132 of the side wall of the gutter 13 to break into the pin 15 and its lug 152 even if it is subjected to an external impact, for example, forcing the angle of the two connecting rods 11 to become small. The two rods can be locked without relative rotation or relative tilting around the hinge, improving the stability of the frame, high safety, and such a structure makes folding and opening changes easier and faster.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A foldable frame comprising a plurality of connecting rods hingedly connected, wherein two connected connecting rods are angularly connected by a split pin, and one of the two connected connecting rods protrudes from the connecting rod end a boring head, the end of the other connecting rod has a groove for receiving the plunging pin and the boring head, the boring head has a groove extending axially from the connecting rod, and the bottom surface of the plunging pin is convex A pair of lugs are inserted into the gutter, and a pair of lugs protrude from opposite sides of the insertion pin, and two side walls of the gutter are correspondingly provided with grooves for receiving the pair of lugs.
Claims 1 The foldable frame is characterized in that the lug extends parallel to the beam direction, and the beam extends in a direction parallel to the axis of the connecting rod, and the length of the lug extends less than the surface of the stringer The side edge is half the length.
Claims 1 The foldable frame is characterized in that the groove bottom width of the gutter is larger than the width of the notch, the top surface of the purlin is in contact with the groove bottom of the gutter, and the top width of the purlin is It is larger than the width of the root of the stringer so that the stringer is caught in the tongue and groove.
Claims 1 The foldable frame is characterized in that the cross section of the gutter in a direction perpendicular to the axis of the connecting rod is a shape which is tapered from the bottom of the groove to the notch, and the purlin is perpendicular to the connecting rod axis The cross section in the direction is a shape that tapers from the top to the root.
Claims 1 The foldable frame is characterized in that the end of the connecting rod having the tongue and groove is a bent end, and the notch of the groove is opened at the end surface of the bent end and extends through the circumference of the connecting rod opposite to the end surface surface.
Claim 5 The foldable frame is characterized in that the groove bottom of the gutter is perpendicular to the axis of the connecting rod, and the groove extends in a direction parallel to the groove bottom.
Claim 5 The foldable frame is characterized in that the hinge structure of the connecting connecting rod is mounted on the inner side of the bent end, and the notch of the groove on the outer side of the bent end is curved to be folded on the connecting connecting rod And the portion of the lug of the plunging pin that is moved against the curved rim and the portion where the lug is not provided is received in the gutter when opened.
Claims 1 The foldable frame is characterized in that the foldable frame is a goal net frame, and a longer connecting rod of the plurality of connecting rods is provided with a folding structure or a telescopic structure at a middle portion thereof.
Claims 1 The foldable frame is characterized in that the lug extends laterally from a lowermost position on the side of the plunging pin, the bottom surface of the lug being flush with the bottom surface of the plunging pin, the lug being The lengthwise direction extends inwardly from the outer edge of the pin.
The foldable frame according to claim 1, wherein said purlins and gutters have the same length, said gutters have a length equal to a length in the axial direction of the hammer, and said purlins have an extended length of intrusion The length of the pin in the axial direction of the entire bottom surface.