Connecting and fixing device for frame and soft carriage of trailer and trailer

Through the clamping structure of the pressing block and the upper connecting seat, combined with the double fixing of the end portion of the thickness difference structure and the limiting portion or fixed structure of the mating space, the existing trailer connection fixing device is solved, and the strength and production efficiency of the soft car are improved.

CN119636877APending Publication Date: 2025-03-18XIAMEN ROADZUP OUTDOOR PROD
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Patent Information

Application Number
CN202411885228.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-20
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

The connection fixtures between the frame and the soft carriage of the existing trailer are complex and have high production costs. The installation of corn buckles or reinforcement blocks weakens the connection force of the soft carriage.

Method used

The clamping structure of the pressing block and the upper connecting seat is adopted, and the double fixation of the abutment part of the thickness difference structure and the limiting part or the fixed structure of the mating space is achieved to achieve a firm connection between the frame and the soft car.

Benefits of technology

The double fixation of clamping and buckle is achieved, which enhances the strength of the soft car, and the connection structure is uniformly subjected to a beautiful appearance, which reduces production costs and sewing workload, and improves production efficiency.

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Abstract

The invention discloses a connecting and fixing device for a frame and a soft carriage of a trailer and the trailer. The connecting and fixing device comprises an upper connecting base, an edge part, a pressing block and a fixing structure. The frame is provided with the upper connecting seat; the soft carriage is provided with the edge part, and the edge part is provided with a thickness difference structure and is provided with a thicker part and an abutting part; the pressing block and the upper connecting base are fixedly connected together through the fixing structure, and the edge part is clamped by the pressing block and the upper connecting base. A matching space is formed between the pressing block and the upper connecting base, the thick part of the edge part is located in the matching space, and the abutting part can abut against the fixing structure or an outward limiting part of the matching space. Compared with the prior art, the technical scheme has the advantages that the fixing is firm, the strength of the soft carriage is enhanced, the production efficiency is improved, the production cost is saved, and economic benefits are generated.
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Description

Technical Field

[0001] The invention relates to a trailer, in particular to a connecting and fixing device for a trailer frame and a soft body compartment and the trailer. Background Art

[0002] For the connection and fixing device between the existing trailer frame and the soft body, please refer to Figure 1 and Figure 2 , usually by punching a large hole A1 on the edge of the soft car body, then installing a circular eyelet A2 or sewing a reinforcement block with a hole, and then using a screw A3 to pass through the upper connecting seat A4 from bottom to top, the eyelet A2 and then lock it with the nut A5 to achieve fixation. This fixing device is relatively complex and has a relatively high production cost. In addition, the soft car body needs to have a large hole punched due to the installation of the eyelet A2 or the reinforcement block, thereby weakening the connection force of the soft car body. Summary of the invention

[0003] The present invention provides a connection and fixing device for a trailer frame and a soft-body carriage and a trailer, which overcomes the shortcomings existing in the background technology.

[0004] One of the technical solutions adopted by the present invention to solve the technical problem is: a connecting and fixing device for a trailer frame and a soft car body comprises:

[0005] An upper connecting seat, the frame is provided with the upper connecting seat;

[0006] An edge portion, the soft body compartment has the edge portion, the edge portion corresponds to the upper connecting seat and is disposed on the upper connecting seat, the edge portion is provided with a thickness difference structure and has a thicker portion and an inwardly facing abutting portion formed by the thicker portion; and

[0007] A pressing block and a fixing structure, wherein the pressing block is provided with an upper through hole, and the fixing structure comprises a fixing piece, wherein the pressing block is provided on the edge portion, and the fixing piece passes through the upper through hole of the pressing block, the edge portion and is assembled together with the upper connecting seat, and the fixing structure fixes the pressing block and the upper connecting seat together and enables the pressing block and the upper connecting seat to clamp the edge portion; a matching space is formed between the pressing block and the upper connecting seat, and the thicker portion of the edge portion is located in the matching space and the abutting portion can abut against the outward limiting portion of the fixing structure or the matching space.

[0008] The top surface of the upper connecting seat is concavely provided with a lower groove, and the lower groove has a first groove wall facing outwards. The thicker portion is at least partially located in the lower groove. The limiting portion includes the first groove wall, and the abutting portion of the edge portion can abut the limiting portion.

[0009] The lower groove leads to the outer side of the upper connecting seat, and an outer wrapping wall extends downward from the outer side of the pressing block. The outer wrapping wall is located on the outer side of the upper connecting seat and at least surrounds the lower groove.

[0010] The bottom surface of the pressing block is concavely provided with an upper groove, the upper groove has a second groove wall facing outwards, the thicker portion is at least partially located in the upper groove, the limiting portion includes the second groove wall, and the abutting portion of the edge portion can abut the limiting portion.

[0011] The top surface of the upper connecting seat is concavely provided with a lower groove, and the lower groove has a first groove wall facing outwards; the bottom surface of the pressing block is concavely provided with an upper groove, and the upper groove has a second groove wall facing outwards; the thicker portion is located in the upper and lower grooves; the limiting portion includes at least one of the first groove wall and the second groove wall, and the abutting portion of the edge portion can abut the limiting portion.

[0012] The upper connecting seat is provided with a lower connecting hole, and the fixing piece passes through the upper through hole and the edge portion and is fixedly connected to the lower connecting hole; the top surface of the upper connecting seat is concavely provided with a lower groove, which leads to the lower connecting hole, and the thicker part is at least partially located in the lower groove; the abutting portion of the edge portion can abut the fixing piece.

[0013] The bottom surface of the pressing block is concavely provided with an upper groove, the upper groove leads to the upper through hole, the thicker portion is at least partially located in the upper groove; the abutting portion of the edge portion can abut against the fixing piece.

[0014] The thicker portion comprises a rim arranged at the edge of the soft body compartment, the rim having a layer portion firmly stacked against the surface of the edge portion, and the inner side surface of the layer portion constitutes a top abutment portion.

[0015] A fixing nail is also provided to fix the edge part and the layer part, and the matching space is provided with a third groove matching the end of the fixing nail, and the end of the fixing nail is located in the third groove; the edge has two layers respectively stacked against the top and bottom surfaces of the edge part.

[0016] The fixing member is located outside the matching space.

[0017] The upper through hole is a stepped hole that is larger at the top and smaller at the bottom, and a pressure cover is provided to cover the upper through hole from top to bottom.

[0018] The fixing piece is a screw, which passes through the upper through hole and the edge portion of the pressing block from top to bottom and is screwed to the upper connecting seat.

[0019] The second technical solution adopted by the present invention to solve its technical problem is: a trailer, which is provided with a connecting and fixing device between the frame of the trailer and the soft car body.

[0020] Compared with the background technology, this technical solution has the following advantages:

[0021] The edge part is fixed to the frame and the soft car body by "clamping the pressing block and the upper connecting seat" and "the thicker part abutting against the limit part or fixed structure of the matching space", realizing the dual fixation of "clamping" and "abutting". The clamping edge part makes it impossible for the thicker part to squeeze into the clamping part, thereby ensuring that the "abutting part always abuts against the limit part" and is firmly fixed. There is no need to set large holes or eyelets on the edge part, which enhances the strength of the soft car body, makes the connection structure evenly stressed, and has a beautiful appearance. In production, the sewing workload of the soft car body is reduced, production efficiency is improved, production costs are saved, and economic benefits are generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a three-dimensional schematic diagram of a fixing device of the background technology.

[0024] Figure 2 It is a three-dimensional exploded schematic diagram of a fixing device of the background technology.

[0025] Figure 3 It is a three-dimensional schematic diagram of a trailer according to a specific embodiment.

[0026] Figure 4 It is a three-dimensional partially exploded schematic diagram of a trailer according to a specific implementation method.

[0027] Figure 5 It is a three-dimensional schematic diagram of a frame of a trailer according to a specific embodiment.

[0028] Figure 6 It is a three-dimensional partially exploded schematic diagram of a frame of a trailer according to a specific implementation method.

[0029] Figure 7 It is a three-dimensional schematic diagram of a soft-body compartment of a trailer according to a specific implementation method.

[0030] Figure 8 It is a three-dimensional exploded schematic diagram of a fixing device according to a specific implementation method.

[0031] Fig. 9 It is a cross-sectional schematic diagram of a fixing device according to a specific implementation mode 1.

[0032] Fig.10 It is a perspective exploded schematic diagram of a fixing device according to a second specific implementation mode.

[0033] Fig.11 2 is a cross-sectional schematic diagram of a fixing device according to a second specific implementation mode.

[0034] Description of labels:

[0035] Frame 1, column 11, lower connecting seat 12, first scissor mechanism 13, second scissor mechanism 14, base 15, bottom rod 16, roller 17, hand-pull part 18;

[0036] The soft compartment 2, the bottom wall 21, the peripheral wall 22, and the periphery 23;

[0037] Upper connecting seat 3, lower groove 31, first groove wall 32, lower connecting hole 33;

[0038] Edge portion 4, top portion 41, edge 42;

[0039] The pressing block 5, the upper groove 51, the second groove wall 52, the outer wrapping wall 53, the upper through hole 54, and the pressing cover 55;

[0040] Fixed structure 6, fixing member 61;

[0041] Matching space 7. DETAILED DESCRIPTION

[0042] Please refer to Figures 1 to 7 A trailer includes a vehicle frame 1 and a soft car body 2. The vehicle frame 1 includes two rows of columns 11 arranged at intervals from left to right and two radiating mechanisms; each row of columns 11 includes three columns 11 arranged at intervals from front to back, the columns 11 are telescopic tubes, the top of the columns 11 are fixedly provided with an upper connecting seat 3, and the bottom of the columns 11 are fixedly provided with a lower connecting seat 12, and the spacing between the upper connecting seat 3 and the lower connecting seat 12 changes according to the telescopic movement of the telescopic tube; a first scissor-type mechanism 13 is connected between the upper connecting seat 3 and the lower connecting seat 12 of each adjacent two columns 11 in each row, and a second scissor-type mechanism 14 is connected between the upper connecting seat 3 and the lower connecting seat 12 of the two rows of columns 11 located in the front and rear; the lower connecting seats 12 of the six columns 11 are arranged into two adjacent rectangles, each rectangle is connected to a radiating mechanism, and the radiating mechanism includes a base 15 and four bottom rods 16, one end of the bottom rod 16 is rotatably connected to the base 15, and the other end is rotatably connected to the four lower connecting seats 12 enclosed in a rectangle. The frame 1 is provided with a roller 17 below, and the second scissor mechanism 14 is provided with a hand-pulling portion 18. The soft body compartment 2 comprises a bottom wall 21 and a peripheral wall 22 extending upward from the outer peripheral edge of the bottom wall, wherein the upper peripheral edge of the peripheral wall 22 extends outward to form a peripheral edge 23. Specific implementation method 1

[0044] Please refer to Figures 1 to 9 The connecting and fixing device between the frame 1 of the trailer and the soft car body 2 includes an upper connecting seat 3, an edge portion 4, a pressing block 5 and a fixing structure 6.

[0045] The periphery 23 of the soft car body 2 has the edge portion 4, the edge portion 4 is provided with a thickness difference structure and has a thicker portion and an inwardly facing top portion 41 formed by the thicker portion. In this embodiment, the thicker portion includes a rim 42 fixed to the periphery 23, the rim 42 has two layers respectively stacked against the top and bottom surfaces of the edge portion 4, and the inward side surface of the layer portion constitutes the top portion 41. The rim 42 is a sheet structure made of rubber material, and the sheet structure is folded in half and surrounds the fixed periphery 23 to form the rim, such as by fixing the edge portion 4 and the layer portion by fixing nails. According to needs, the rim can only have a single-layer layer portion, and the thicker portion can be directly formed by folding and sewing the periphery 23. The edge portion 4 corresponds to the upper connecting seat 3 and the edge portion 4 is arranged on the upper connecting seat 3.

[0046] The pressing block 5 is arranged on the edge portion 4, and the fixing structure 6 fixes the pressing block 5 and the upper connecting seat 3 together and enables the pressing block 5 and the upper connecting seat 3 to clamp the edge portion 4; a matching space 7 is formed between the pressing block 5 and the upper connecting seat 3, and the thicker part of the edge portion 4 is located in the matching space 7 and the abutting part 42 can abut against the outward limiting part of the matching space 7. Firstly, the edge portion 4 fixes the frame 1 and the soft car body 2 through "clamping of the pressing block 5 and the upper connecting seat 3" and "the abutting part 41 of the thicker part abuts against the limiting part of the matching space 7", realizing the dual fixation of "clamping" and "abutting", and the clamping of the edge portion 4 makes it impossible for the thicker part to squeeze into the clamping position, thereby ensuring that the "abutting part 41 always abuts against the limiting part" and is firmly fixed. Secondly, there is no need to set a large hole or eyelet on the edge portion 4, which enhances the strength of the soft compartment 2, makes the connection structure evenly stressed, and has a beautiful appearance. In production, the sewing workload of the soft compartment is reduced, production efficiency is improved, production costs are saved, and economic benefits are generated. Thirdly, during the processing, there is no need to pre-form holes in the soft compartment 2 (for example, the soft compartment 2 can be directly pierced through by a fixing member), which improves production efficiency, saves production costs, and generates economic benefits.

[0047] The top surface of the upper connecting seat 3 is concavely provided with a lower groove 31, and the lower groove 31 leads to the outer side surface of the upper connecting seat 3. The lower groove 31 has a first groove wall 32 facing outwards, and the lower layer of the edge 42 is located in the lower groove 31; the bottom surface of the pressing block 5 is concavely provided with an upper groove 51, and the upper groove 51 has a second groove wall 52 facing outwards, and the upper layer of the edge 42 is located in the upper groove 31; the limiting portion includes at least one of the first groove wall 32 and the second groove wall 52. The structure is simple, not only can it accommodate the thicker part, but also the groove wall constitutes the limiting portion, the structure is simple, and the assembly is convenient. The outer side of the pressing block 5 extends downwardly with an outer wrapping wall 53, and the outer wrapping wall 53 is located on the outer side of the upper connecting seat 3 and at least surrounds the upper groove 31 and the lower groove 51, so that the appearance is beautiful, the user is prevented from being pinched and injured, and the safety performance is high.

[0048] The fixing structure 6 includes a fixing member 61. The pressing block 5 is provided with an upper through hole 54, and the upper connecting seat 3 is provided with a lower connecting hole 33. The fixing member 61 passes through the upper through hole 54 and is fixedly connected to the lower connecting hole 33 of the upper connecting seat 3. The structure is simple and easy to assemble. The fixing member 61 is located outside the matching space 7 to strengthen the connection. The specific structure is as follows: the fixing member 61 is a screw, and the screw 61 passes through the pressing block 5 and the edge portion 4 from top to bottom and is screwed to the lower connecting hole 33 of the upper connecting seat 3 (according to needs, the lower connecting hole 33 is provided with an internal thread, and the internal thread is directly set in the lower connecting hole 33 or a nut is embedded in the lower connecting hole 33). The edge portion 4 can be directly pierced by the screw without prefabricated holes. The screw is a self-tapping screw. The upper through hole 54 is a stepped hole with a larger upper portion and a smaller lower portion. A pressure cover 55 is provided to cover the upper through hole 54 from top to bottom, which is beautiful and enhances safety. According to needs, the fixing member can be a bolt, and a nut is also provided, and the fixing member and the upper connecting seat are assembled together through the threaded connection of the bolt and the nut.

[0049] The matching space 7 is provided with a third groove matching the end of the fixing nail. If the third groove is provided at the bottom of the lower groove 31, the fixed connection between the frame 1 and the soft car body 2 can be strengthened through the matching of the third groove and the fixing nail.

[0050] In this embodiment, the upper connecting seat 3 is a corner upper connecting seat located at a corner of the frame 1 . Specific implementation method 2

[0052] Please refer to Figures 1 to 7 , Fig.10 and Fig.11 , which is different from the first embodiment in that: the lower groove 31 is connected to the lower connecting hole 33, the upper groove 51 is connected to the upper through hole 54, and the abutting portion 41 of the edge portion 4 can abut the fixing member 61, and the fixed connection is firm, stable and reliable. The upper connecting seat 3 is the middle upper connecting seat located in the middle position of the frame 1.

[0053] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A connecting and fixing device for a trailer frame and a soft-body car body, characterized in that: include: An upper connecting seat, the frame is provided with the upper connecting seat; An edge portion, the soft body compartment has the edge portion, the edge portion corresponds to the upper connecting seat and is disposed on the upper connecting seat, the edge portion is provided with a thickness difference structure and has a thicker portion and an inwardly facing abutting portion formed by the thicker portion; and A pressing block and a fixing structure, wherein the pressing block is provided with an upper through hole, and the fixing structure comprises a fixing piece, wherein the pressing block is provided on the edge portion, and the fixing piece passes through the upper through hole of the pressing block, the edge portion and is assembled together with the upper connecting seat, and the fixing structure fixes the pressing block and the upper connecting seat together and enables the pressing block and the upper connecting seat to clamp the edge portion; a matching space is formed between the pressing block and the upper connecting seat, and the thicker portion of the edge portion is located in the matching space and the abutting portion can abut against the outward limiting portion of the fixing structure or the matching space.

2. The connecting and fixing device of the trailer frame and the soft car body according to claim 1, characterized in that: The top surface of the upper connecting seat is concavely provided with a lower groove, and the lower groove has a first groove wall facing outwards. The thicker portion is at least partially located in the lower groove. The limiting portion includes the first groove wall, and the abutting portion of the edge portion can abut the limiting portion.

3. The connecting and fixing device of the trailer frame and the soft body compartment according to claim 2, characterized in that: The lower groove leads to the outer side of the upper connecting seat, and an outer wrapping wall extends downward from the outer side of the pressing block. The outer wrapping wall is located on the outer side of the upper connecting seat and at least surrounds the lower groove.

4. The connecting and fixing device for the trailer frame and the soft body compartment according to claim 1, characterized in that: The bottom surface of the pressing block is concavely provided with an upper groove, the upper groove has a second groove wall facing outwards, the thicker portion is at least partially located in the upper groove, the limiting portion includes the second groove wall, and the abutting portion of the edge portion can abut the limiting portion.

5. The connecting and fixing device for the trailer frame and the soft body compartment according to claim 1, characterized in that: The top surface of the upper connecting seat is concavely provided with a lower groove, and the lower groove has a first groove wall facing outwards; the bottom surface of the pressing block is concavely provided with an upper groove, and the upper groove has a second groove wall facing outwards; the thicker portion is located in the upper and lower grooves; the limiting portion includes at least one of the first groove wall and the second groove wall, and the abutting portion of the edge portion can abut the limiting portion.

6. The connecting and fixing device for a trailer frame and a soft-body car body according to claim 1, characterized in that: The upper connecting seat is provided with a lower connecting hole, and the fixing piece passes through the upper through hole and the edge portion and is fixedly connected to the lower connecting hole; the top surface of the upper connecting seat is concavely provided with a lower groove, which leads to the lower connecting hole, and the thicker part is at least partially located in the lower groove; the abutting portion of the edge portion can abut the fixing piece.

7. The connecting and fixing device for a trailer frame and a soft-body car body according to claim 1, characterized in that: The bottom surface of the pressing block is concavely provided with an upper groove, the upper groove leads to the upper through hole, the thicker portion is at least partially located in the upper groove; the abutting portion of the edge portion can abut against the fixing piece.

8. The connecting and fixing device for a trailer frame and a soft-body car body according to any one of claims 1 to 7, characterized in that: The thicker portion comprises a rim arranged at the edge of the soft body compartment, the rim having a layer portion firmly stacked against the surface of the edge portion, and the inner side surface of the layer portion constitutes a top abutment portion.

9. The connecting and fixing device of the trailer frame and the soft body compartment according to claim 8, characterized in that: A fixing nail is also provided to fix the edge part and the layer part, and the matching space is provided with a third groove matching the end of the fixing nail, and the end of the fixing nail is located in the third groove; the edge has two layers respectively stacked against the top and bottom surfaces of the edge part.

10. The connecting and fixing device for a trailer frame and a soft-body car body according to any one of claims 1 to 7, characterized in that: The fixing member is located outside the matching space.

11. The connecting and fixing device for a trailer frame and a soft-body car body according to any one of claims 1 to 7, characterized in that: The upper through hole is a stepped hole that is larger at the top and smaller at the bottom, and a pressure cover is provided to cover the upper through hole from top to bottom.

12. The connecting and fixing device for a trailer frame and a soft-body car body according to any one of claims 1 to 7, characterized in that: The fixing piece is a screw, which passes through the upper through hole and the edge portion of the pressing block from top to bottom and is screwed to the upper connecting seat.

13. A trailer, characterized in that: It is provided with a connecting and fixing device for a trailer frame and a soft-body vehicle compartment according to claim 1.