Turnover type pickup truck rear cover

Abstract

The utility model relates to a turnover type pickup truck rear cover which is provided with a bottom frame. Side edge supporting plates are arranged on the bottom frame, a sliding cover plate is arranged on the bottom frame, the sliding cover plate comprises a positioning cover plate and a connecting cover plate, the connecting cover plate comprises a plurality of rotating plates, the side edge of each side edge supporting plate is provided with a locking groove, the bottom of each rotating plate is provided with a positioning mechanism, and each positioning mechanism comprises a positioning assembly, a rope frame and a first pull rope. The positioning assembly comprises a locking bottom plate, wire boxes, a locking channel, a locking plate, a spring bolt and a first reset spring, a plurality of first rope holes are formed in the locking plate, a through hole is formed in the rope frame, one end of a first pull rope is fixed to any first rope hole in the locking plate, and the other end of the first pull rope sequentially penetrates through the wire boxes and the through hole in the rope frame and then extends into the wire box on the other side; and the first rope hole is fixedly connected with the first rope hole in the locking plate in the wire box on the other side. The device is ingenious in structure, convenient and practical.

Description

Technical Field

[0001] The utility model relates to the field of pickup truck rear covers, and particularly relates to a folding pickup truck rear cover. Background Art

[0002] A pickup truck is a vehicle model that uses a sedan head and cab, and at the same time has an open truck compartment; its characteristics are that it has the comfort of a sedan, yet it has strong power, and it also has stronger cargo-carrying capacity and the ability to adapt to poor road conditions than a sedan, and it is an important part of the automotive market. The most common pickup truck model is the double-cab pickup truck, which can be used as a special-purpose vehicle, a multi-purpose vehicle, an official vehicle, a commercial vehicle, or a household vehicle for cargo-carrying, tourism, rental, etc.

[0003] During the use of the existing pickup truck rear cover, first connect the first cover plate to the rear compartment of the pickup truck through screws or other locking parts, and then successively connect each cover plate to the rear compartment of the pickup truck manually one by one. This installation method of the rear cover is inefficient on the one hand, and secondly, the installation and disassembly of the rear cover are both rather cumbersome and very inconvenient. Summary of the Invention

[0004] The purpose of the utility model is to provide a folding pickup truck rear cover with a clever structure, which can realize the quick positioning installation and disassembly of the pickup truck rear cover and the pickup truck, and is convenient and practical.

[0005] The technical solution for achieving the purpose of the present utility model is as follows: The present utility model has a chassis that can be fixed on a pickup truck; on the chassis, there are oppositely arranged side support plates, and on the chassis, there is a sliding cover plate slidably arranged on the chassis. The sliding cover plate includes a positioning cover plate that can be positioned and connected to the chassis after sliding, and a connecting cover plate rotatably connected to the positioning cover plate. The connecting cover plate includes a plurality of rotating plates sequentially rotatably connected. The rotating plate close to the positioning cover plate among each rotating plate is rotatably connected to the positioning cover plate. Locking grooves are provided on the sides of each side support plate, and the locking grooves on each side support plate are oppositely arranged. A positioning mechanism for controlling the connection or disconnection of each rotating plate to the chassis is provided at the bottom of each rotating plate. The positioning mechanism includes positioning components oppositely arranged at the bottom of the rotating plate, a rope frame arranged between each positioning component, and a first pulling rope connecting each positioning component. The positioning component includes a locking bottom plate fixed to the bottom of the rotating plate, a wire box fixed on the locking bottom plate, a locking channel fixed on the locking bottom plate and located inside the wire box, a locking plate slidably arranged in the locking channel, a locking tongue arranged on the locking plate, and a first return spring arranged in the locking channel. The sliding direction of the locking plate is perpendicular to the extending direction of the locking groove. The two ends of the first return spring respectively act on the locking tongue and inside the locking channel. One end of the locking plate away from the locking tongue is provided with a plurality of first rope holes, and each first rope hole is evenly distributed on the first rope hole along the extending direction of the locking channel. The rope frame is provided with through holes through which the first pulling rope can pass. One end of the first pulling rope is fixed to any one of the first rope holes on the locking plate. The other end of the first pulling rope sequentially passes through the wire box and the through hole on the rope frame and then extends into the wire box on the other side, and is fixed to the first rope hole on the locking plate in the wire box on the other side. The locking tongue extends out of the wire box and into the locking groove under the continuous force application of the first return spring, and disengages from the locking groove under the force application of the first pulling rope. After each rotating plate rotates, it is connected to the chassis through the cooperation of the locking tongue and the locking groove, and disengages from the chassis after the locking tongue disengages from the locking groove.

[0006] Further, angle plates are provided on both the positioning cover plate and the rotating plate, which are arranged oppositely. Positioning blocks are provided on each angle plate, and positioning pin grooves are provided on the end faces of each positioning block facing the lock groove. A locking mechanism for connecting the positioning cover plate and the chassis is provided at the bottom of any one of the side support plates. The locking mechanism includes a locking assembly, a side pull rope, and a control push plate rotatably connected to the side support plate and capable of controlling the retraction and release of the side pull rope. The locking assembly includes a lock box fixed on the side support plate, a lock block slidably arranged in the lock box, a first connecting block arranged on the lock block, and a lock pin slidably arranged on the lock box. A limiting sliding groove for the lock block to slide is provided in the lock box. The extending direction of the limiting sliding groove is parallel to the extending direction of the lock groove. A bottom sliding groove for the lock pin to slide is provided on the surface of the lock box opposite to the limiting sliding groove. The extending direction of the bottom sliding groove is perpendicular to the extending direction of the limiting sliding groove. A second return spring is provided in the bottom sliding groove, and both ends of the second return spring act on the bottom of the bottom sliding groove and the lock pin respectively. The bottom sliding groove and the limiting sliding groove are communicated through a connecting groove. The extending direction of the connecting groove is parallel to the extending direction of the bottom sliding groove. An adjusting groove is provided on the lock block, and the adjusting groove is also communicated with the bottom sliding groove through the connecting groove. An adjusting rod is provided on the lock pin, and the adjusting rod passes through the connecting groove and extends into the adjusting groove. An adjusting inclined surface for pressing the adjusting rod is provided in the adjusting groove. One end of the side pull rope is fixed on the control push plate, and the other end of the side pull rope passes through the lock box and is fixed to the first connecting block. A third return spring is also provided in the limiting sliding groove. The third return spring is sleeved on the side pull rope, and both ends of the third return spring act on the limiting sliding groove and the lock block respectively. The lock pin extends into the positioning pin groove by the continuous force applied to the lock block by the third return spring, the pressing of the adjusting inclined surface on the adjusting rod, and the continuous force applied by the second return spring.

[0007] Further, a locking assembly is also provided on the other side support plate. Each locking assembly is connected in series, and a connecting pull rope is provided between each locking assembly. A second connecting block is also provided on the lock block. One end of the connecting pull rope is fixed to the second connecting block, and the other end of the connecting pull rope passes through the chassis and is fixed to the first connecting block in the locking assembly on the other side support plate. A third return spring is also sleeved on the connecting pull rope. The third return spring on the connecting pull rope is arranged in the lock box on the other side support plate. Each lock block slides synchronously by the pulling of the first connecting block by the side pull rope and the pulling of the connecting pull rope.

[0008] Further, the above-mentioned lock plate is Z-shaped, and the end of the lock plate close to the lock tongue is lower than the end of the lock plate far from the lock tongue. A connecting plate is fixedly provided on the locking bottom plate. The cross-section of the connecting plate is in a shape like the Chinese character 'ji'. A locking channel is formed after the connecting plate is fixedly connected to the locking bottom plate through a locking member. One end of the first return spring is fixed on the connecting plate, and the other end of the first return spring is fixed to the lock plate.

[0009] Further, roller groups are provided at the bottom of the above-mentioned connecting cover plate, and the roller groups are arranged oppositely. Each roller group includes a plurality of rollers, and each roller is respectively arranged on each rotating plate and the positioning cover plate. Slide grooves corresponding to each roller group are provided on each side support plate, and the rollers on each roller group are rotatably arranged in the corresponding slide grooves.

[0010] Further, the cross-section of the above-mentioned slide groove is arc-shaped.

[0011] Further, a rotating bracket is provided on the above-mentioned side support plate. The control push plate is rotatably connected to the rotating bracket. A stay wire plate integrally formed with the control push plate is provided on the control push plate, and one end of the side stay wire is fixed to the stay wire plate.

[0012] Further, limit flanges are provided on the sides of each side support plate. The limit flanges on each side support plate are arranged oppositely, and the distance between each limit flange is greater than the width of the sliding cover plate.

[0013] The utility model has positive effects: (1) By arranging a positioning mechanism at the bottom of each rotating plate, each locking tongue drives each locking plate to slide through each first stay wire, and each locking plate drives each locking tongue to expand and contract. Through the cooperation of the locking tongue and the locking groove, the connection between each rotating plate and the chassis after rotation is effectively ensured, and the rotation of the rotating plate is limited, thereby ensuring the quick installation and disassembly of the rotating plate and the chassis. The locking channel can limit the sliding of the locking plate and the locking tongue, ensuring the stability of the locking plate and the lock box during the sliding process. Through the setting of the first return spring, after the first stay wire is released, the locking tongue can be stably sent into the locking groove, ensuring the stable connection between the rotating plate and the chassis, ensuring that the rotating plate can only slide relative to the chassis and will not rotate, and further ensuring the smooth connection between the sliding cover plate and the chassis. The structure is ingenious, stable and practical.

[0014] (2) By arranging a positioning plate on the angle plate and a positioning pin groove on the positioning plate, the control push plate drives the locking blocks and the locking blocks connected to the other end of the connection stay wire to slide synchronously by driving the side stay wire, and drives each locking pin to slide in the bottom slide groove through the cooperation of the adjusting inclined surface and the adjusting rod, thereby controlling the cooperation between the locking pin and the positioning pin groove, and further controlling the connection and unlocking between the positioning cover plate and the chassis. It can not only ensure the stability of the connection between the positioning cover plate and the chassis, but also ensure the quick installation and disassembly of the positioning cover plate and the chassis. It is convenient and practical.

[0015] (3) By arranging the connection groove, on the one hand, the bottom slide groove can be communicated with the adjusting groove, and on the other hand, the sliding of the adjusting rod can be limited, ensuring the stability of the expansion and contraction of the locking pin, and further ensuring the stable and firm connection between the positioning cover plate and the chassis.

[0016] (4) The utility model ensures the stable and firm connection between the sliding cover plate and the chassis by setting a second locking component, arranging the two locking components in series, and synchronously sliding each lock block through a connecting pull rope, so as to ensure that the lock pins on both sides can extend or retract synchronously.

[0017] (5) The utility model manually controls the sliding of the lock block by setting a rotating bracket on the side support plate and a wire drawing plate on the rotating bracket, and through the cooperation of the wire drawing plate and the side pull rope, ensuring the convenience of locking and unlocking the lock pin.

[0018] (6) The utility model limits the width of the sliding path of the sliding cover plate by setting a limiting flanging and arranging the limiting flangings oppositely, thus ensuring the accuracy of the sliding of the sliding cover plate. Description of the Drawings

[0019] In order to make the content of the utility model easier to be clearly understood, the following further details the utility model according to specific embodiments in conjunction with the drawings, where

[0020] Figure 1 is the overall structural schematic diagram of the folding pickup truck rear cover in the utility model;

[0021] Figure 2 is the bottom view of the overall structure of the folding pickup truck rear cover in the utility model;

[0022] Figure 3 is the overall structural schematic diagram of the chassis in the utility model;

[0023] Figure 4 is the overall structural schematic diagram of the positioning mechanism on the transfer plate in the utility model;

[0024] Figure 5 is the overall structural schematic diagram of the positioning component in the utility model;

[0025] Figure 6 is the connection structural schematic diagram of the lock plate and the connecting plate in the utility model;

[0026] Figure 7 is the overall structural schematic diagram of the locking component in the utility model;

[0027] Figure 8 is the bottom view of the lock block in the utility model;

[0028] Figure 9 is the overall structural schematic diagram of the control push plate in the utility model. Detailed Embodiments

[0029] See Figures 1 to 9, the utility model has a chassis 1 that can be fixed on a pickup truck; side support plates 3 are arranged oppositely on the chassis 1, a sliding cover plate 2 that is slidably arranged on the chassis 1 is arranged on the chassis 1, the sliding cover plate 2 includes a positioning cover plate 21 that can be positioned and connected to the chassis 1 after sliding, and a connecting cover plate that is rotatably connected to the positioning cover plate 21, the connecting cover plate includes a plurality of rotating plates 22 that are sequentially rotatably connected, the rotating plate 22 of each rotating plate 22 close to the positioning cover plate 21 is rotatably connected to the positioning cover plate 21, locking grooves 30 are arranged on the sides of each side support plate 3, the locking grooves 30 on each side support plate 3 are arranged oppositely, positioning mechanisms 4 that can control the connection or disconnection of each rotating plate 22 and the chassis 1 are arranged at the bottoms of each rotating plate 22, the positioning mechanism 4 includes positioning components 41 that are arranged oppositely at the bottom of the rotating plate 22, a rope frame 43 arranged between each positioning component 41, and a first pulling rope 42 connecting each positioning component 41, the positioning component 41 includes a locking bottom plate 412 fixed at the bottom of the rotating plate 22, a wire box 411 fixed on the locking bottom plate 412, a locking channel 418 fixed on the locking bottom plate 412 and located inside the wire box 411, a locking plate 414 slidably arranged in the locking channel 418, a locking tongue 415 arranged on the locking plate 414, and a first return spring 417 arranged in the locking channel 418, the sliding direction of the locking plate 414 is perpendicular to the extending direction of the locking groove 30, two ends of the first return spring 417 respectively act on the locking tongue 415 and inside the locking channel 418, a plurality of first rope holes 416 are arranged at the end of the locking plate 414 far from the locking tongue 415, each first rope hole 416 is uniformly distributed on the first rope hole 416 along the extending direction of the locking channel 418, a through hole for the first pulling rope 42 to pass through is arranged on the rope frame 43, one end of the first pulling rope 42 is fixed on any one of the first rope holes 416 on the locking plate 414, the other end of the first pulling rope 42 sequentially passes through the wire box 411 and the through hole on the rope frame 43 and then extends into the wire box 411 on the other side, and is fixedly connected to the first rope hole 416 on the locking plate 414 in the wire box 411 on the other side, the locking tongue 415 extends out of the wire box 411 and extends into the locking groove 30 under the continuous force of the first return spring 417, and is disengaged from the locking groove 30 under the force of the first pulling rope 42, after each rotating plate 22 rotates, it is connected to the chassis 1 through the cooperation of the locking tongue 415 and the locking groove 30, and is disengaged from the chassis 1 after the locking tongue 415 is disengaged from the locking groove 30.

[0030] The positioning cover plate 21 and the rotating plate 22 are both provided with angle plates 23 arranged oppositely, each angle plate 23 is provided with a positioning block 24, and positioning pin grooves are provided on the end faces of each positioning block 24 facing the locking groove 30. A locking mechanism 5 for connecting the positioning cover plate 21 and the chassis 1 is provided at the bottom of any side support plate 3. The locking mechanism 5 includes a locking component 53, a side pulling rope 52, and a control push plate 51 rotatably connected to the side support plate 3 and capable of controlling the retraction and release of the side pulling rope 52. The locking component 53 includes a lock box 531 fixed on the side support plate 3, a lock block 532 slidably arranged in the lock box 531, a first connection block 533 arranged on the lock block 532, and a lock pin 537 slidably arranged on the lock box 531. A limiting sliding groove 536 for the lock block 532 to slide is provided in the lock box 531, and a cover plate is provided on the limiting sliding groove 536. The extending direction of the limiting sliding groove 536 is parallel to the extending direction of the locking groove 30. A bottom sliding groove 5324 for the lock pin 537 to slide is provided on the surface of the lock box 531 opposite to the limiting sliding groove 536. The extending direction of the bottom sliding groove 5324 is perpendicular to the extending direction of the limiting sliding groove 536. A second return spring 539 is provided in the bottom sliding groove 5324, and the two ends of the second return spring 539 act on the bottom of the bottom sliding groove 5324 and the lock pin 537 respectively. The bottom sliding groove 5324 and the limiting sliding groove 536 are communicated through a connecting groove 5323. The extending direction of the connecting groove 5323 is parallel to the extending direction of the bottom sliding groove 5324. An adjusting groove 5321 is provided on the lock block 532, and the adjusting groove 5321 is also communicated with the bottom sliding groove 5324 through the connecting groove 5323. An adjusting rod 538 is provided on the lock pin 537. The adjusting rod 538 passes through the connecting groove 5323 and extends into the adjusting groove 5321. An adjusting inclined surface 5322 for pressing against the adjusting rod 538 is provided in the adjusting groove 5321. One end of the side pulling rope 52 is fixed on the control push plate 51, and the other end of the side pulling rope 52 passes through the lock box 531 and is fixedly connected to the first connection block 533. A third return spring 535 is further provided in the limiting sliding groove 536. The third return spring 535 is sleeved on the side pulling rope 52, and the two ends of the third return spring 535 act on the limiting sliding groove 536 and the lock block 532 respectively. The lock pin 537 extends into the positioning pin groove by the continuous force applied to the lock block 532 by the third return spring 535, the pressing of the adjusting inclined surface 5322 against the adjusting rod 538, and the continuous force applied by the second return spring 539.

[0031] The other side support plate 3 is also provided with a locking assembly 53. The locking assemblies 53 are arranged in series. A connecting pull rope 54 is provided between the locking assemblies 53. A second connecting block 534 is further provided on the lock block 532. One end of the connecting pull rope 54 is fixedly connected to the second connecting block 534. The other end of the connecting pull rope 54 passes through the chassis 1 and is fixedly connected to the first connecting block 533 in the locking assembly 53 on the other side support plate 3. A third return spring 535 is also sleeved on the connecting pull rope 54. The third return spring 535 on the connecting pull rope 54 is arranged in the lock box 531 on the other side support plate 3. Each lock block 532 slides synchronously by the pulling of the first connecting block 533 by the side pull rope 52 and the pulling of the connecting pull rope 54.

[0032] The lock plate 414 is Z-shaped. The end of the lock plate 414 close to the lock tongue 415 is lower than the end of the lock plate 414 away from the lock tongue 415. A connecting plate 413 is fixedly provided on the locking bottom plate 412. The cross-section of the connecting plate 413 is in a capital-I shape. After the connecting plate 413 is fixedly connected to the locking bottom plate 412 through a locking member, a locking channel 418 is formed. One end of the first return spring 417 is fixed on the connecting plate 413, and the other end of the first return spring 417 is fixedly connected to the lock plate 414.

[0033] The bottom of the connecting cover plate is provided with a set of rollers arranged oppositely. Each set of rollers includes a plurality of rollers 25. Each roller 25 is respectively arranged on each rotating plate 22 and the positioning cover plate 21. Each side support plate 3 is provided with a chute 31 corresponding to each set of rollers. The rollers 25 on each set of rollers roll in the corresponding chute 31.

[0034] The cross-section of the chute 31 is arc-shaped.

[0035] The side support plate 3 is provided with a rotating bracket 33. The control push plate 51 is rotatably connected to the rotating bracket 33. A wire drawing plate 511 integrally formed with the control push plate 51 is provided on the control push plate 51. One end of the side pull rope 52 is fixed on the wire drawing plate 511.

[0036] Limit flanges 32 are provided on the sides of each side support plate 3. The limit flanges 32 on each side support plate 3 are arranged oppositely, and the distance between the limit flanges 32 is greater than the width of the sliding cover plate 2.

[0037] Working principle of the utility model: During the use of the utility model, the chassis 1 is fixed on the pickup truck. The sliding cover plate 2 slides on the chassis 1 through the cooperation of each roller 25 and the chute 31. The limiting flanges 32 on each side support plate 3 limit the sliding path of the sliding cover plate 2. The operator can press the control button plate 51, and the control button plate 51 drives the wire pulling plate 511 to start rotating. The wire pulling plate 511 drives the side wire rope 52 to move. The side wire rope 52 drives the first connecting block 533 and the lock block 532 to slide in the limiting chute 536. During the sliding of the lock block 532, the adjusting inclined plane 5322 in the adjusting groove 5321 starts to press against the adjusting rod 538 on the locking pin 537, and drives the locking pin 537 to retract into the bottom chute 5324. At the same time, the second connecting block 534 drives the connecting wire rope 54 and the lock block 532 at the other end of the connecting wire rope 54 to slide, and at the same time drives the locking pin 537 on the other side to retract into the bottom chute 5324. Each rotating plate 22 is folded and wound on the positioning cover plate 21. Each positioning cover plate 21 starts to slide into the pickup truck through the cooperation of each roller 25 and the chute 31. Each rotating plate 22 starts to turn out one by one during the sliding of the positioning cover plate 21. During the turning process, the operator can pull the first wire rope 42. Each first wire rope 42 pulls the lock plate 414 in each wire box 411, and drives the lock tongue 415 to retract into the wire box 411. After each rotating plate 22 rotates until its upper end surface is flush with the upper end surface of the connecting cover plate, the operator releases the first wire rope 42. Each lock tongue 415 is reset under the action of each corresponding first return spring 417 and enters the lock groove 30. Each rotating plate 22 is limited in rotation through the cooperation of each lock tongue 415 and the lock groove 30. While each rotating plate 22 is rotating, the connecting cover plate is also advancing forward and is limited at the locking mechanism 5. When the positioning blocks 24 on each corner plate 23 on the positioning cover plate 21 are transferred to each lock box 531, the operator can release the control button plate 51. Each lock block 532 is reset by the continuous force of each third return spring 535 and the continuous force of each second return spring 539 on the locking pin 537. At the same time, each locking pin 537 extends out of the bottom chute 5324 and extends into the corresponding positioning lock groove 30 on each positioning block 24, thereby fixing each positioning cover plate 21 on the chassis 1; thus covering the rear compartment of the pickup truck. When disassembling, the operator only needs to press the control button plate 51 to retract each locking pin 537 into the bottom chute 5324, unlock each positioning cover plate 21, and then pull each first wire rope 42 on the rotating plate 22 one by one to rotate each rotating plate 22, so as to fold and store the sliding cover plate 2, effectively solving the problems of low efficiency driven by manual folding and inconvenient installation and disassembly in the prior art. The structure is ingenious, realizing the rapid installation and disassembly of the sliding cover plate 2 and the overall stability after installation, which is convenient and practical.

[0038] In the specific embodiments described above, the purpose, technical solution and beneficial effects of the present utility model have been further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A folding pickup truck rear cover, having a chassis that can be fixed on a pickup truck; characterized in that: The chassis is provided with side support plates arranged oppositely, and the chassis is provided with a sliding cover plate slidably arranged on the chassis. The sliding cover plate includes a positioning cover plate that can be positioned and connected to the chassis after sliding, and a connecting cover plate rotatably connected to the positioning cover plate. The connecting cover plate includes a plurality of rotating plates sequentially rotatably connected. The rotating plate of each rotating plate close to the positioning cover plate is rotatably connected to the positioning cover plate. Locking grooves are provided on the sides of each side support plate, and the locking grooves on each side support plate are arranged oppositely. Positioning mechanisms for controlling the connection or disconnection of each rotating plate to the chassis are provided at the bottoms of each rotating plate. The positioning mechanism includes positioning components oppositely arranged at the bottom of the rotating plate, a rope frame arranged between each positioning component, and a first pulling rope connecting each positioning component. The positioning component includes a locking bottom plate fixed to the bottom of the rotating plate, a wire box fixed to the locking bottom plate, a locking channel fixed to the locking bottom plate and located inside the wire box, a locking plate slidably arranged in the locking channel, a locking tongue arranged on the locking plate, and a first return spring arranged in the locking channel. The sliding direction of the locking plate is perpendicular to the extending direction of the locking groove. The two ends of the first return spring act on the locking tongue and inside the locking channel respectively. A plurality of first rope holes are provided at one end of the locking plate away from the locking tongue, and each first rope hole is evenly distributed on the first rope hole along the extending direction of the locking channel. The rope frame is provided with through holes for the first pulling rope to pass through. One end of the first pulling rope is fixed to any one of the first rope holes on the locking plate, and the other end of the first pulling rope sequentially passes through the wire box and the through hole on the rope frame and then extends into the wire box on the other side, and is fixed to the first rope hole on the locking plate in the wire box on the other side. The locking tongue extends out of the wire box and into the locking groove under the continuous force of the first return spring, and disengages from the locking groove under the force of the first pulling rope. After each rotating plate rotates, it is connected to the chassis through the cooperation of the locking tongue and the locking groove, and disengages from the chassis after the locking tongue disengages from the locking groove.

2. The folding pickup truck rear cover according to claim 1, characterized in that: The positioning cover plate and the rotating plate are both provided with angle plates arranged oppositely, each angle plate is provided with a positioning block, and each positioning block is provided with a positioning pin groove on the end face facing the lock groove. The bottom of any one side stay plate is provided with a locking mechanism for connecting the positioning cover plate and the chassis. The locking mechanism includes a locking component, a side stay rope, and a control push plate rotatably connected to the side stay plate and capable of controlling the retraction and release of the side stay rope. The locking component includes a lock box fixed on the side stay plate, a lock block slidably arranged in the lock box, a first connecting block arranged on the lock block, and a lock pin slidably arranged on the lock box. The lock box is provided with a limiting chute for the lock block to slide, and the extending direction of the limiting chute is parallel to the extending direction of the lock groove. The surface of the lock box opposite to the limiting chute is provided with a bottom chute for the lock pin to slide, and the extending direction of the bottom chute is perpendicular to the extending direction of the limiting chute. A second return spring is arranged in the bottom chute, and the two ends of the second return spring act on the bottom of the bottom chute and the lock pin respectively. The bottom chute and the limiting chute are communicated through a connecting chute, and the extending direction of the connecting chute is parallel to the extending direction of the bottom chute. The lock block is provided with an adjusting chute, and the adjusting chute is also communicated with the bottom chute through the connecting chute. The lock pin is provided with an adjusting rod, and the adjusting rod extends into the adjusting chute after passing through the connecting chute. An adjusting inclined surface for pressing the adjusting rod is arranged in the adjusting chute. One end of the side stay rope is fixed on the control push plate, and the other end of the side stay rope passes through the lock box and is fixed to the first connecting block. A third return spring is also arranged in the limiting chute, the third return spring is sleeved on the side stay rope, and the two ends of the third return spring act on the limiting chute and the lock block respectively. The lock pin extends into the positioning pin groove by the continuous force applied to the lock block by the third return spring, the pressing of the adjusting inclined surface on the adjusting rod, and the continuous force applied by the second return spring.

3. The folding pickup truck rear cover according to claim 2, wherein: A locking component is also arranged on the other side stay plate, and each locking component is arranged in series. A connecting stay rope is arranged between each locking component. The lock block is also provided with a second connecting block. One end of the connecting stay rope is fixed to the second connecting block, and the other end of the connecting stay rope passes through the chassis and is fixed to the first connecting block in the locking component on the other side stay plate. A third return spring is also sleeved on the connecting stay rope, and the third return spring on the connecting stay rope is arranged in the lock box on the other side stay plate. Each lock block slides synchronously by the pulling of the first connecting block by the side stay rope and the pulling of the connecting stay rope.

4. The folding rear cover of a pickup truck according to claim 1, wherein: The lock plate is Z-shaped, and the end of the lock plate close to the lock tongue is lower than the end of the lock plate far from the lock tongue. A connecting plate is fixedly arranged on the locking bottom plate, and the cross section of the connecting plate is in a shape of a capital "J". The connecting plate and the locking bottom plate are fixedly connected through a locking piece to form a locking channel. One end of the first return spring is fixed on the connecting plate, and the other end of the first return spring is fixed to the lock plate.

5. The folding pickup truck rear cover according to claim 1, characterized in that: The bottom of the connecting cover plate is provided with a pair of roller groups arranged oppositely. Each roller group includes a plurality of rollers, and each roller is respectively arranged on each rotating plate and the positioning cover plate. Corresponding sliding grooves are provided on each side support plate for the corresponding roller groups, and the rollers on each roller group are rotatably arranged in the corresponding sliding grooves.

6. The folding pickup truck rear cover according to claim 5, characterized in that: The cross-section of the sliding groove is arc-shaped.

7. The folding pickup truck rear cover according to claim 2, wherein: A rotating bracket is provided on the side support plate, the control push plate is rotatably connected to the rotating bracket, a wire-pulling plate integrally formed with the control push plate is provided on the control push plate, and one end of the side pull rope is fixed to the wire-pulling plate.

8. The folding pickup truck rear cover according to claim 1, wherein: Limit flanges are provided on the sides of each side support plate. The limit flanges on each side support plate are arranged oppositely, and the distance between the limit flanges is greater than the width of the sliding cover plate.

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