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

Abstract

The utility model 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.

Description

TECHNICAL FIELD

[0001] The utility model relates to a trailer, especially a connecting and fixing device of a trailer frame and a soft carriage and a trailer. BACKGROUND

[0002] A connecting and fixing device of a trailer frame and a soft carriage is known, please refer to Figure 1 and Figure 2 , usually by punching a big hole A1 in the edge part of the soft carriage, then installing a ring-shaped eyelet buckle A2 or sewing a reinforced block with holes, and then using a screw A3 to pass through the upper connecting seat A4, the eyelet buckle A2 from bottom to top and lock in the nut A5 to realize the fixing. The fixing device is relatively complex, the production cost is relatively high, and the soft carriage must be punched with a big hole due to the installation of the eyelet buckle A2 or the reinforced block, thereby weakening the connecting force of the soft carriage. SUMMARY

[0003] The utility model provides a connecting and fixing device of a trailer frame and a soft carriage and a trailer, which overcomes the deficiencies in the background art.

[0004] One of the technical solutions adopted by the utility model to solve the technical problem is: a connecting and fixing device of a trailer frame and a soft carriage, comprising:

[0005] an upper connecting seat, the trailer frame being provided with the upper connecting seat;

[0006] an edge part, the soft carriage being provided with the edge part, the edge part corresponding to the upper connecting seat and being arranged on the upper connecting seat, the edge part being provided with a thickness difference structure and having a thicker part and an inward top abutting part formed through the thicker part; and

[0007] a pressing block and a fixing structure, the pressing block being provided with an upper through hole, the fixing structure comprising a fixing member, the pressing block being arranged on the edge part, the fixing member passing through the upper through hole of the pressing block, the edge part and being connected with the upper connecting seat, the fixing structure fixing and connecting the pressing block and the upper connecting seat together and clamping the edge part between the pressing block and the upper connecting seat; a matching space being formed between the pressing block and the upper connecting seat, the thicker part of the edge part being located in the matching space and the top abutting part being able to abut against the fixing structure or an outward limiting part of the matching space.

[0008] The upper surface of the upper connecting seat is concavely provided with a lower groove, the lower groove having an outward first groove wall, the thicker part being at least partially located in the lower groove, the limiting part comprising the first groove wall, and the top abutting part of the edge part being able to abut against the limiting part.

[0009] The lower groove is communicated to the outer side surface of the upper connecting seat, the pressing block extending downwardly outwardly has an outer wrapping wall, and the outer wrapping wall is located on the outer side of the upper connecting seat and at least surrounds the lower groove.

[0010] The upper connecting seat top surface is concavely provided with a lower groove, the lower groove has a first groove wall outward, the pressing block bottom surface is concavely provided with an upper groove, the upper groove has a second groove wall outward, the thicker portion is located in the upper and lower grooves, the limiting portion comprises at least one of the first groove wall and the second groove wall, and the top abutting portion of the edge portion can abut against the limiting portion.

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

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

[0013] The upper connecting seat top surface is concavely provided with a lower groove, the lower groove has a first groove wall outward, the pressing block bottom surface is concavely provided with an upper groove, the upper groove has a second groove wall outward; the thicker portion is located in the upper and lower grooves; the limiting portion comprises at least one of the first groove wall and the second groove wall, and the top abutting portion of the edge portion can abut against the limiting portion.

[0014] The thicker portion comprises a binding edge provided on the soft carriage edge, the binding edge has a layer portion which is fixedly stacked on the surface of the edge portion, and the inward side surface of the layer portion constitutes the top abutting portion.

[0015] Another fixing nail is arranged to fixedly connect the edge portion and the layer portion, the matching space is provided with a third groove matched with the end of the fixing nail, and the end of the fixing nail is located in the third groove; the binding edge has two layer portions which are respectively fixedly stacked on the top surface and the bottom surface of the edge portion.

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

[0017] The upper through hole is a stepped hole with the upper part being larger and the lower part being smaller, and a pressing cover is additionally arranged to cover the upper through hole from top to bottom.

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

[0019] The technical solution adopted by the utility model to solve the technical problems is as follows: the trailer is provided with the connecting and fixing device of the trailer frame and the soft carriage.

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

[0021] The edge portion is fixed with the soft carriage and the frame through "clamping of the pressing block and the upper connecting seat" and "top abutting of the thicker portion against the limiting portion or the fixed structure of the matching space", realizing double fixation of "clamping" and "top abutting". The clamping edge portion makes the clamping position without space for the thicker portion to extrude into, so as to ensure that the top abutting portion always abuts against the limiting portion, and the fixation is firm. The edge portion does not need to be provided with a large hole or a grommet, the strength of the soft carriage is enhanced, the connecting structure is uniformly stressed, the appearance is beautiful, the sewing workload of the soft carriage is reduced in production, the production efficiency is improved, the production cost is saved, and economic benefits are generated. BRIEF DESCRIPTION OF DRAWINGS

[0022] The utility model will be further described below in combination with the drawings and specific embodiments.

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

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

[0025] Figure 3 It is a three-dimensional schematic view of the trailer of the specific embodiment.

[0026] Figure 4 It is a three-dimensional local exploded schematic view of the trailer of the specific embodiment.

[0027] Figure 5 It is a three-dimensional schematic view of the frame of the trailer of the specific embodiment.

[0028] Figure 6 It is a three-dimensional local exploded schematic view of the frame of the trailer of the specific embodiment.

[0029] Figure 7 It is a three-dimensional schematic view of the soft carriage of the trailer of the specific embodiment.

[0030] Figure 8 It is a three-dimensional exploded schematic view of the fixing device of the specific embodiment.

[0031] Figure 9 It is a sectional view of the fixing device of the specific embodiment.

[0032] Figure 10 It is a three-dimensional exploded schematic view of the fixing device of the specific embodiment.

[0033] Figure 11 It is a sectional view of the fixing device of the specific embodiment.

[0034] Label explanation:

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

[0036] Soft carriage 2, bottom wall 21, peripheral wall 22, periphery 23;

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

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

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

[0040] Fixing structure 6, fixing piece 61;

[0041] Matching space 7. Specific implementation

[0042] Please refer to Figures 1 to 7 A trailer, comprising a frame 1 and a soft carriage 2. The frame 1 comprises two rows of uprights 11 arranged at intervals left and right and two radial mechanisms; each row of uprights 11 comprises three uprights 11 arranged at intervals front and back, the upright 11 is a telescopic pipe, the top end of the upright 11 is fixedly provided with an upper connecting seat 3, and the bottom end is fixedly provided with a lower connecting seat 12, the spacing of the upper connecting seat 3 and the lower connecting seat 12 changes according to the telescopic change of the telescopic pipe; the upper connecting seat 3 and the lower connecting seat 12 of each adjacent two uprights 11 in each row are connected by a first scissor mechanism 13, and the upper connecting seat 3 and the lower connecting seat 12 of the uprights 11 located at the front and the rear of the two rows are connected by a second scissor mechanism 14; the lower connecting seats 12 of the six uprights 11 are arranged into two adjacent rectangles, each rectangle is connected with a radial mechanism, the radial mechanism comprises 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 surrounding the rectangle. The frame 1 is further provided with a roller 17 below; the second scissor mechanism 14 at the front is further provided with a hand pulling part 18. The soft carriage 2 comprises a bottom wall 21 and a peripheral wall 22 extending upward from the outer periphery of the bottom wall, and the peripheral wall 22 extends outward into a periphery 23 at the upper periphery. Specific implementation

[0044] Please refer to Figures 1 to 9 The connecting and fixing device of the frame 1 of the trailer and the soft carriage 2, comprising 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 top 2 is provided with the edge portion 4, the edge portion 4 is provided with the thickness difference structure and has a thicker part and an inward top abutting part 41 formed by the thicker part. In the embodiment, the thicker part includes a hem 42 fixed to the periphery 23, the hem 42 has two layers respectively fixed to the top and bottom surfaces of the edge portion 4, the inward side of the layer constitutes the top abutting part 41, the hem 42 is formed in a sheet shape made of rubber material, the sheet shape is folded and surrounds the periphery 23 to form the hem, and the edge portion 4 and the layer are fixed by fixing nails. According to needs, the hem can be provided with only one layer of the layer, and the thicker part 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, the fixing structure 6 fixedly connects the pressing block 5 and the upper connecting seat 3 together and clamps the edge portion 4 by the pressing block 5 and the upper connecting seat 3; a matching space 7 is formed between the pressing block 5 and the upper connecting seat 3, the thicker part of the edge portion 4 is located in the matching space 7, and the top abutting part 42 can abut against the outward limiting part of the matching space 7. Firstly, the edge portion 4 is fixed to the frame 1 and the soft top 2 by “clamping of the pressing block 5 and the upper connecting seat 3” and “abutting of the top abutting part 41 of the thicker part against the limiting part of the matching space 7”, realizing double fixation of “clamping” and “abutting”, the clamping of the edge portion 4 makes the clamping position without space for the thicker part to extrude into, thereby ensuring that the top abutting part 41 always abuts against the limiting part to be fixed firmly. Secondly, the edge portion 4 does not need to be provided with a large hole or a grommet, thereby enhancing the strength of the soft top 2, making the force of the connecting structure uniform, and making the appearance beautiful. The sewing workload of the soft top 2 is reduced in production, the production efficiency is improved, the production cost is saved, and economic benefits are generated. Thirdly, in the processing process, the soft top 2 does not need to be preformed with a hole (for example, the soft top 2 can be directly punched by the fixing member), thereby improving the production efficiency, saving the production cost, generating economic benefits.

[0047] The upper surface of the upper connecting seat 3 is concavely provided with a lower groove 31, the lower groove 31 is communicated to the outer side surface of the upper connecting seat 3, the lower groove 31 has an outward first groove wall 32, and the lower layer of the hem 42 is located in the lower groove 31; the bottom surface of the pressing block 5 is concavely provided with an upper groove 51, the upper groove 51 has an outward second groove wall 52, and the upper layer of the hem 42 is located in the upper groove 31; and the limiting part includes at least one of the first groove wall 32 and the second groove wall 52. The structure is simple, can accommodate the thicker part, and the groove wall constitutes the limiting part, thereby being simple in structure and convenient to assemble. The outer side of the pressing block 5 downwardly extends an outer wrapping wall 53, 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, thereby making the appearance beautiful, avoiding the user from being injured by being clamped, and being high in safety performance.

[0048] The fixing structure 6 comprises a fixing member 61, the pressing block 5 is provided with an upper through hole 54, 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 in the lower connecting hole 33 of the upper connecting seat 3, the structure is simple, and assembly is convenient. The fixing member 61 is located outside the matching space 7, and the connection is strengthened. The specific structure is as follows: the fixing member 61 is a screw, the screw 61 passes through the pressing block 5 and the edge portion 4 from top to bottom and is screwed in 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 arranged in the lower connecting hole 33 or a nut is pre-buried in the lower connecting hole 33), the screw can directly pierce the edge portion 4, and a hole does not need to be pre-prepared, and the screw is a self-tapping screw. The upper through hole 54 is a stepped hole with a large upper part and a small lower part, and a cover 55 is additionally arranged to cover the upper through hole 54 from top to bottom, so that the appearance is beautiful, and safety is improved. According to needs, the fixing member can be a bolt, and a nut is additionally arranged, and the fixing member and the upper connecting seat are connected together through screwing of the bolt and the nut.

[0049] The matching space 7 is provided with a third groove matched with the end of the fixing nail, and the third groove is arranged in the groove bottom of the lower groove 31, so that the fixing connection of the vehicle frame 1 and the soft carriage 2 is further strengthened through cooperation of the third groove and the fixing nail.

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

[0052] Please refer to Figures 1 to 7 , Figure 10 and Figure 11 , which are different from the specific implementation method one in that the lower groove 31 is communicated with the lower connecting hole 33, the upper groove 51 is communicated with the upper through hole 54, and the top abutting portion 41 of the edge portion 4 can abut against the fixing member 61, so that the fixing connection is firm, stable and reliable. The upper connecting seat 3 is a middle upper connecting seat of the vehicle frame 1 located at a middle position.

[0053] The above merely describes a preferred embodiment of the utility model, and therefore cannot limit the range of implementation of the utility model, that is, equivalent changes and modifications made according to the patent range and content of the specification should still be included in the range covered by the utility model.

Claims

1. A connection and fixing device for a trailer frame and a soft-sided carriage, characterized in that: The utility model relates to a kind of connecting and fixing devices of trailer's frame and soft carriage, including: Upper connecting seat, the frame is provided with the upper connecting seat; Edge portion, the soft carriage has the edge portion, the edge portion corresponds upper connecting seat and edge portion is arranged on upper connecting seat, edge portion is provided with thickness difference structure and has thicker part and the top of inwards formed by the thicker part;And Press block and fixed structure, the press block is provided with upper through-hole, the fixed structure includes fixing piece, the press block is arranged on edge portion, the fixing piece passes through the upper through-hole of press block, edge portion and is attached together with upper connecting seat, the fixed structure is fixedly connected together with press block and upper connecting seat and makes press block and upper connecting seat clamp edge portion;The thicker part of the edge portion is located in the cooperation space formed between the press block and the upper connecting seat and the top of inwards can abut against the fixed structure or the limiting portion outwardly possessed by cooperation space.

2. The coupling device of claim 1, wherein: The top surface of the upper connecting seat is concave with a lower groove, the lower groove has a first groove wall outwardly, the thicker part is at least partially located in the lower groove, the limiting portion includes the first groove wall, and the top of inwards of the edge portion can abut against the limiting portion.

3. The coupling device of claim 2, wherein: The lower groove is communicated to the outer side of the upper connecting seat, the outer side of the press block extends downwardly with an outer wrapping wall, and the outer wrapping wall is located on the outer side of the upper connecting seat and at least surrounds the lower groove.

4. The coupling assembly of claim 1, wherein: The bottom surface of the press block is concave with an upper groove, the upper groove has a second groove wall outwardly, and the thicker part is at least partially located in the upper groove. The limiting portion includes the second groove wall, and the top of inwards of the edge portion can abut against the limiting portion.

5. The coupling assembly of claim 1, wherein: The top surface of the upper connecting seat is concave with a lower groove, the lower groove has a first groove wall outwardly, the bottom surface of the press block is concave with an upper groove, the upper groove has a second groove wall outwardly; the thicker part 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 top of inwards of the edge portion can abut against the limiting portion.

6. The coupling assembly of claim 1, wherein: The upper connecting seat is provided with a lower connecting hole, the fixing piece passes through the upper through-hole, the edge portion and is fixedly connected in the lower connecting hole; the top surface of the upper connecting seat is concave with a lower groove, the lower groove is communicated to the lower connecting hole, and the thicker part is at least partially located in the lower groove; and the top of inwards of the edge portion can abut against the fixing piece.

7. The coupling assembly of claim 1, wherein: The bottom surface of the press block is concave with an upper groove, the upper groove is communicated to the upper through-hole, and the thicker part is at least partially located in the upper groove; and the top of inwards of the edge portion can abut against the fixing piece.

8. A coupling device for coupling a frame of a trailer to a soft-sided bed according to any one of claims 1 to 7, wherein: The thicker part includes a wrapping edge arranged on the edge of the soft carriage, the wrapping edge has a layer part which is tightly stacked on the surface of the edge portion, and the inward side surface of the layer part constitutes the top of inwards.

9. The coupling assembly of claim 8, wherein: A fixing nail is additionally arranged to fixedly connect the edge portion and the layer part, the cooperation space is provided with a third groove which cooperates with the end of the fixing nail, and the end of the fixing nail is located in the third groove; the wrapping edge has two layer parts which are respectively tightly stacked on the top surface and the bottom surface of the edge portion.

10. A coupling device for coupling a frame of a trailer to a soft-sided bed according to any one of claims 1 to 7, wherein: The fixing piece is located outside the cooperation space.

11. A coupling device for coupling a frame of a trailer to a flexible bed according to any one of claims 1 to 7, wherein: The upper through-hole is a stepped hole which is large at the top and small at the bottom, and a press cover is additionally arranged to cover the upper through-hole from top to bottom.

12. A coupling device for coupling a frame of a trailer to a flexible bed according to any one of claims 1 to 7, characterised in that: The fixing piece is a screw which passes through the upper through-hole of the press block and the edge portion from top to bottom and is screwed in the upper connecting seat.

13. A trailer characterized by: It is provided with a connecting and fixing device of trailer's frame and soft carriage according to claim 1.

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