Automobile tow hook blanking cover assembly

Abstract

An automobile tow hook blanking cap assembly comprises a blanking cap arranged on a tow opening hole area of a bumper in a covering mode, and the inner side of the blanking cap is connected with the upper opening edge of the inner side of a tow opening in a hinged mode through a hinge shaft. The two ends of a torsional spring on the hinge shaft are connected with the blanking cap and the bumper, elastic force provided by the torsional spring drives the blanking cap to be turned and opened towards the outer side of the bumper with the hinge shaft as a shaft core, the back face of the blanking cap is connected with a check claw, the overhanging direction of the check claw points to a vehicle cab, and a lock catch unit is arranged on the inner side of the bumper. Through the mutual cooperation of the non-return claw and the lock catch unit, when the non-return claw moves from the non-return cooperation position where the non-return claw and the lock catch unit are mutually locked to the direction of a vehicle cab, the non-return claw abuts against the lock catch unit and drives the non-return face to be located at the separation position where the non-return face and the moving path of the non-return table face avoid each other, and the blanking cap can be automatically opened outwards; the blanking cap does not need to be pried open by an additional tool, the uncovering mode is more convenient, and the risk that the blanking cap or the paint surface on the outer side of the bumper is scratched by the tool is avoided.

Description

Technical Field

[0001] The utility model relates to a trailer hook plug cover, in particular to an automobile trailer hook plug cover assembly. Background Art

[0002] The trailer hook cover is a cover located on the bumper that covers the trailer opening on the bumper. When the vehicle needs to tow, the cover can be opened, the trailer hook can be inserted into the tow opening, and connected to the vehicle body; conversely, when the vehicle is not towing, the cover can be closed on the tow opening to cover the tow opening and ensure the aesthetic appearance of the bumper outside.

[0003] The technical solution disclosed in the patent document entitled "A trailer hook cover structure that can be quickly opened and reset" (document number CN212313206U) includes a front bumper skin, a trailer hook cover inner plate welded to the front bumper skin, a trailer hook cover inner plate installed with a trailer hook cover hinge, a trailer hook cover hinge installed with a trailer hook cover outer plate, the front bumper skin and the trailer hook cover inner plate are provided with an opening that cooperates with the trailer hook cover hinge, and the trailer hook cover inner plate is installed with a reset spring connected to the trailer hook cover hinge.

[0004] The patent document titled "A curved leaf spring hook-type trailer hook cover" (document number CN221090399U) discloses a technical solution comprising an outer cover plate, an inner cover plate disposed parallel to the outer cover plate, and a hollow recessed portion disposed on the inner cover plate. The upper portion of the recessed portion is provided with a hinged member, which is hinged to one end of a connector, and the other end of the connector is fixedly connected to the outer cover plate. The connector is C-shaped. The hinge is also provided with a curved leaf spring, which is hinged to the hinge at one end and in contact with the connector at the other end. The curved leaf spring provides elasticity, allowing the cover to be opened and closed quickly by applying a slight guiding force.

[0005] The technical solution disclosed in the patent document entitled "A trailer hook cover for a car and a car" (document number CN116278544A) includes a cover body, the inner side surface of the cover body is provided with a buckle for connecting with the bumper, the cover body on the buckle side is provided with a pry point structure, the inner side surface of the cover body is fixed to the hinge seat, and the end of the hinge seat is rotatably connected to the fixing seat for fixing to the bumper; after the buckle is separated from the bumper by the pry point structure, the hinge seat can rotate relative to the fixing seat to drive the cover body to open the cover opening on the bumper.

[0006] Existing trailer hook cover fixing solutions generally use clips to secure them to the bumper. For tightly attached covers, opening them often requires using an external object (such as a screwdriver) to pry the cover along its edge. Due to the tight connection between the cover edge and the bumper's trailer opening, coupled with the instability of manual operation, using an external object to pry the cover can easily scratch the paint on the cover or the bumper, affecting the vehicle's finish. Summary of the Invention

[0007] The utility model provides a car trailer hook plug cover assembly, which can be opened and closed without using external objects, avoiding the risk of foreign objects scratching the plug cover or the paint surface on the outer side of the bumper.

[0008] In order to achieve the above purpose, the technical solution adopted is: a car trailer hook cover assembly, including a cover placed on the trailer port hole area on the bumper, the inner side of the cover and the upper edge of the inner side of the trailer port are hingedly connected by a hinge shaft, the two ends of the torsion spring on the hinge shaft connect the cover and the bumper, and the elastic force provided by the torsion spring drives the cover to flip open to the outside of the bumper with the hinge shaft as the axis core, the back of the cover is connected to a non-return claw and the overhang direction of the non-return claw points to the vehicle cabin, and a locking unit is provided on the inner side of the bumper. When the non-return pawl moves toward the vehicle's cabin, the wedge-shaped surface of the non-return pawl pushes the lock unit and deforms in the vehicle width direction; when the blocking cover moves to a position where its cover surface is flush with the trailer opening, the non-return table on the non-return pawl facing the outside of the bumper is flush with the non-return surface on the lock unit and the non-return table is reset and displaced to the non-return matching position blocked by the non-return surface; when the non-return pawl moves from the non-return matching position toward the vehicle's cabin, the non-return pawl pushes the lock unit and drives the non-return surface to a separation position where it avoids the moving path of the non-return table.

[0009] Compared with the prior art, the technical effect of the present invention is as follows: by cooperating with the non-return claw on the blocking cover and the locking unit on the inner side of the bumper, and by applying external force to the blocking cover, when the non-return claw moves toward the vehicle's driver's compartment from the non-return cooperation position where it is locked with the locking unit, the non-return claw pushes the locking unit and drives the non-return surface to a separation position where it avoids the moving path of the non-return table. Then, under the action of the torsion spring, the blocking cover can be automatically opened outward, so there is no need to use additional tools to pry open the blocking cover. The opening method is more convenient and avoids the risk of the blocking cover or the paint surface on the outside of the bumper being scratched by tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a partial schematic diagram of the outer side of the bumper with the cover closed;

[0011] Figure 2 This is a schematic diagram of the inner side of the plug cover;

[0012] Figure 3 for Figure 2 A magnified view of part B in FIG;

[0013] Figure 4 This is a partial schematic diagram of the outer side of the bumper with the cover open;

[0014] Figure 5 A top view of the structure in which the anti-return claw is in a locked state;

[0015] Figure 6 for Figure 5 A magnified view of part C in FIG;

[0016] Figure 7 A top view of the structure in which the anti-return claw is in an unlocked state;

[0017] Figure 8 for Figure 7 A magnified view of part D in FIG.

[0018] Figure 9 Schematic diagram of the locking unit;

[0019] Figure 10 This is a schematic diagram of the activity card;

[0020] Figure 11 It is a schematic diagram of the movable seat and the connecting seat. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-11 And related content, the utility model is further described in detail:

[0022] A car trailer hook cover assembly includes a cover 10 placed on the trailer opening A1 hole area on the bumper A. The inner side of the cover 10 is hingedly connected to the inner upper edge of the trailer opening A1 by a hinge shaft 20. The two ends of the torsion spring 30 on the hinge shaft 20 connect the cover 10 and the bumper A, and the elastic force provided by the torsion spring 30 drives the cover 10 to flip open to the outside of the bumper A with the hinge shaft 20 as the axis core. The back of the cover 10 is connected to a non-return claw 11, and the overhang direction of the non-return claw 11 points to the vehicle driver's compartment. A locking unit 40 is provided on the inner side of the bumper A. The non-return claw 11 points to the vehicle driver's compartment. When the stop pawl 11 is displaced in the direction of the vehicle's driving compartment, the wedge-shaped surface of the non-return pawl 11 pushes the lock unit 40 and deforms in the vehicle width direction; when the blocking cover 10 is displaced to a position where its cover surface is flush with the trailer opening A1, the non-return table 111 on the non-return pawl 11 facing the outside of the bumper A is flush with the non-return surface 411 on the lock unit 40 and the non-return table 111 is reset and displaced to the non-return matching position blocked by the non-return surface 411; when the non-return pawl 11 is displaced from the non-return matching position toward the vehicle's driving compartment, the non-return pawl 11 pushes the lock unit 40 and drives the non-return surface 411 to a separation position where it avoids the moving path of the non-return table 111.

[0023] In the above scheme, if Figure 1、 Figure 2 as well as Figure 4 As shown, the cover 10 and the bumper A are hinged together through the hinge shaft 20 (specifically, as shown in FIG. Figure 2 As shown, the cover 10 is hingedly connected to the hinge seat A2 on the bumper A. The cover 10 will not completely separate from the bumper A, preventing the cover 10 from being left behind after opening. The elastic force provided by the torsion spring 30 can drive the cover 10 to flip open toward the outside of the bumper A around the hinge axis 20, realizing the function of automatically flipping the cover 10 after opening, which facilitates the connection and fixation of the trailer hook.

[0024] Here, the locking and unlocking methods of the blocking cover 10 are further described in detail:

[0025] Locking process: Combination Figure 5 and Figure 6 As shown, when the cover 10 is in the open position, the cover 10 is pressed into the trailer opening A1, and the anti-return pawl 11 moves synchronously with the cover 10. During this process, as the anti-return pawl 11 moves toward the vehicle's passenger compartment, its wedge-shaped surface pushes against the latch unit 40, forcing the anti-return pawl 11 to deform in the vehicle width direction. As the anti-return pawl 11 continues to move, the anti-return pawl 11 and the latch unit 40 slide relative to each other. When the cover 10 moves to a position where its cover surface is flush with the trailer opening A1, the anti-return surface 111 on the anti-return pawl 11, which faces the outside of the bumper A, is flush with the anti-return surface 411 on the latch unit 40. The deformation of the anti-return pawl 11 is naturally restored, and the anti-return surface 111 on it returns to the anti-return engagement position, where it is blocked by the anti-return surface 411. In other words, the latch unit 40 blocks the anti-return pawl 11 from moving outward, thereby locking the cover 10.

[0026] Unlocking process: Combination Figure 7 and Figure 8 As shown, with the anti-return pawl 11 and the locking unit 40 locked together, an external force directed toward the vehicle's passenger compartment is applied to the cover 10. As the anti-return pawl 11 moves toward the vehicle's passenger compartment from its locked, engaged position with the locking unit 40, it pushes against the locking unit 40, forcing the anti-return surface 411 into a disengaged position that avoids the movement path of the anti-return platform 111. At this point, the anti-return pawl 11 is no longer blocked by the locking unit 40, and the torsion spring 30 automatically opens the cover 10 outward, eliminating the need for additional tools to pry it open. This makes opening the cover more convenient and avoids the risk of scratching the paint on the cover 10 or the exterior of the bumper A.

[0027] As a preferred embodiment, the locking unit 40 includes a movable latch 41. A non-return surface 411 is the side of the movable latch 41 that faces toward the vehicle's passenger compartment and is adjacent to the non-return pawl 11. When the non-return pawl 11 moves from its non-return engagement position toward the vehicle's passenger compartment, the non-return pawl 11 pushes against a pressing mechanism, which forces the non-return surface 411 of the movable latch 41 to a disengaged position, avoiding the movement path of the non-return surface 111. When the blocking cover 10 is locked, the non-return surface 111 of the non-return pawl 11, which faces the vehicle's exterior, is locked by the non-return surface 411 of the movable latch 41. When the blocking cover 10 is unlocked and the blocking cover 10 is pressed toward the vehicle's passenger compartment, the non-return pawl 11 pushes against the pressing mechanism, which forces the non-return surface 411 of the movable latch 41 to a disengaged position, avoiding the movement path of the non-return surface 111. This releases the non-return limit on the non-return pawl 11, allowing the blocking cover 10 to flip open.

[0028] Furthermore, a mounting bracket A3 is provided on the inner bar body of the bumper A near the lower edge of the trailer opening A1, and a first guide rail 50 is connected to the mounting bracket A3. The first guide rail 50 is arranged along the vehicle width direction, and the movable card 41 is provided on the first guide rail 50 and forms a guide limit cooperation therewith. The non-return claw 11 is arranged relative to one end face of the first guide rail 50 in the vehicle width direction, and a tension spring 42 is provided on the side of the movable card 41 away from the non-return claw 11. The two ends of the tension spring 42 connect the movable card 41 and the first guide rail 50, and the elastic force provided by the tension spring 42 drives the movable card 41 to move along the first guide rail 50 away from the non-return claw 11. In this solution, when unlocking, the elastic force provided by the tension spring 42 can drive the movable card 41 to move along the first guide rail 50 in the vehicle width direction, and the non-return surface 411 of the movable card 41 will naturally separate from the non-return surface 111 of the non-return claw 11, thereby avoiding the situation where the movable card 41 blocks the non-return claw 11 and the blocking cover 10 cannot be opened.

[0029] Furthermore, a second guide rail 60 is provided at the end surface of the first guide rail 50 adjacent to the backstop pawl 11. The second guide rail 60 is arranged along the vehicle length. A movable seat 61 is provided on the second guide rail 60. The movable seat 61 and the second guide rail 60 form a guide and limit position. The movable card 41 has an annular structure with its center hole extending along the vehicle length. The movable seat 61 is located within the center hole of the movable card 41 and restricts the movable card 41 from moving along the first guide rail 50 or is positioned in a disengaged position to avoid the movable card 41's moving path. In this embodiment, the movable seat 61, when located within the center hole of the movable card 41, can restrict the movable card 41 from moving along the first guide rail 50, thereby ensuring a relatively stable position of the movable card 41. At this time, when locking the cover 10, the anti-return pawl 11 is controlled to move toward the vehicle's passenger compartment. The wedge-shaped surface of the anti-return pawl 11 pushes against the movable latch 41. Since the movable latch 41 cannot move, the anti-return pawl 11 is forced to deform in the vehicle width direction. The anti-return pawl 11 and the movable latch 41 then slide relative to each other until the anti-return surface 111 of the anti-return pawl 11 is flush with the anti-return surface 411 of the movable latch 41. The anti-return pawl 11 recovers its deformation and engages the movable latch 41, preventing the cover 10 from rebounding and opening. When the movable seat 61 is in the separation position, avoiding the movable latch 41's movement path, the movable latch 41 is no longer blocked by the movable seat 41 and can move on the first guide rail 50. The movable latch 41 can also disengage from the anti-return pawl 11, thereby allowing the cover 10 to open.

[0030] In addition, combined Figure 5-11 As shown, a first wedge surface 412 is provided on the side of the movable card 41 close to the non-return claw 11, and the first wedge surface 412 is located on the side of the movable card 41 opposite to the non-return surface 411. A second wedge surface 611 is provided on the movable seat 61. When the non-return surface 411 is reset and displaced to the non-return fitting position to resist the non-return table 111, the movable seat 61 is located in the hole area of ​​the movable card 41 and limits the displacement of the movable card 41 in the vehicle width direction; when the non-return surface 411 is displaced to the separation position that avoids the movable path of the non-return table 111, the movable seat 61 is located outside the outer end hole of the movable card 41 and the second wedge surface 611 is in contact with the first wedge surface 412 to form an inclined surface fit.

[0031] In this embodiment, when the blocking cover 10 is unlocked, the movable seat 61 is located outside the outer end opening of the movable latch 41, and the second wedge surface 611 abuts against the first wedge surface 412 to form an inclined engagement. When the blocking cover 10 needs to be locked again, to prevent the movable latch 41 from freely moving in the non-return engagement position when the non-return pawl 11 and the movable latch 41 push against each other, the movable seat 61 is pressed toward the vehicle's passenger compartment. Since the movable seat 61 cannot move in the vehicle width direction, the second wedge surface 611 and the first wedge surface 412 push against each other, forcing the movable latch 41 to move along the first guide rail 50 until the movable latch 41 is in the non-return engagement position. The movable seat 61 then moves into the hole of the movable latch 41, restricting its movement in the vehicle width direction. This displacement of the movable seat 61 into the hole of the movable latch 41 restricts the free movement of the movable latch 41 in the non-return engagement position, allowing the non-return pawl 11 to engage with it.

[0032] Further, combined with Figure 5-8 As shown, a connecting seat 612 is connected to the side of the movable seat 61 facing the vehicle cabin, and the connecting seat 612 forms a guide limit fit with the second guide rail 60. The size of the connecting seat 612 in the vehicle width direction is smaller than the aperture of the annular hole of the movable card 41. The mounting frame A3 is hingedly connected to a lever 70 by a vertical hinge shaft 71. The rod body of the lever 70 is located in the horizontal direction and the non-return claw 11 and the connecting seat 612 are located on the side of the lever 70 facing the outside of the vehicle body. One end of the lever 70 is located in the movement path of the non-return claw 11. The second wedge surface 611 of the movable seat 61 is abutted against the first wedge surface 412 to form an inclined surface fit when the movable seat 61 is displaced along the second guide rail 60 to the outside of the vehicle body.

[0033] In this embodiment, when opening the cover 10, a force is applied toward the vehicle's passenger compartment. The free end of the check pawl 11 pushes against one end of the lever 70, while the other end of the lever 70 pushes against the connecting seat 612 and the movable seat 61, causing them to move outward from the vehicle body until the movable seat 61 is outside the outer opening of the movable latch 41. At this point, the movable latch 41, under the influence of the tension spring 42, moves in the vehicle width direction and disengages from the check pawl 11, thereby releasing the lock on the check pawl 11 and allowing the cover 10 to open outward. Subsequently, the movable seat 61 is pressed toward the vehicle's passenger compartment, displacing it into the hole of the movable latch 41. This not only resets the movable latch 41 to its non-return engagement position, facilitating subsequent locking of the cover 10, but also allows the connecting seat 612 to push against the lever 70 as it moves toward the vehicle's passenger compartment, returning the lever 70 to its previous position.

[0034] It should be noted that, as shown in the accompanying drawings, when the blocking cover 10 is in the locked state, there is still a certain distance between the free end of the anti-return claw 11 and the lever 70. This is to avoid the anti-return claw 11 from accidentally pushing the lever 70 due to excessive force when locking the blocking cover 10.

[0035] Here, in order to prevent the lever 70 from swinging freely during the vehicle's movement and generating unnecessary noise, a damping rotation fit is formed between the lever 70 and the mounting bracket A3 to prevent the lever 70 from moving freely and generating collision noise. Figure 6 As shown, a limiting portion can also be provided on the mounting frame A3 to prevent the end of the lever 70 close to the anti-return claw 11 from swinging toward the anti-return claw 11 , and the other end of the lever 70 is prevented and limited by the connecting seat 612 .

Claims

1. A vehicle trailer hook cover assembly, comprising a cover (10) covering a hole area of ​​a trailer opening (A1) on a bumper (A), wherein the inner side of the cover (10) is hingedly connected to the inner upper edge of the trailer opening (A1) by a hinge shaft (20), and the two ends of a torsion spring (30) on the hinge shaft (20) connect the cover (10) and the bumper (A), and the elastic force provided by the torsion spring (30) drives the cover (10) to flip open toward the outside of the bumper (A) with the hinge shaft (20) as the axis. The invention is characterized in that: The back of the blocking cover (10) is connected to a non-return claw (11) and the overhang direction of the non-return claw (11) points to the vehicle's driving compartment. A locking unit (40) is provided on the inner side of the bumper (A). When the non-return claw (11) moves toward the vehicle's driving compartment, the wedge-shaped surface of the non-return claw (11) pushes the locking unit (40) and deforms in the vehicle width direction. When the blocking cover (10) moves to a position where its cover surface is flush with the trailer opening (A1), the non-return claw (11) faces the locking unit (40). The non-return surface (111) outside the bumper (A) is flush with the non-return surface (411) on the lock unit (40), and the non-return surface (111) is reset and displaced to a non-return matching position blocked by the non-return surface (411); when the non-return claw (11) is displaced from the non-return matching position toward the vehicle cabin, the non-return claw (11) pushes the lock unit (40) and drives the non-return surface (411) to a separation position that avoids the moving path of the non-return surface (111).

2. The automobile trailer hook cover assembly according to claim 1, characterized in that: The locking unit (40) includes an active card (41), a non-return surface (411) being a side of the active card (41) adjacent to the non-return claw (11) facing the vehicle's driving compartment, and when the non-return claw (11) moves from the non-return matching position toward the vehicle's driving compartment, the non-return claw (11) pushes against a pressing mechanism, and the pressing mechanism drives the non-return surface (411) of the active card (41) to be in a separation position that avoids the moving path of the non-return table (111).

3. The automobile trailer hook cover assembly according to claim 2, characterized in that: A mounting frame (A3) is provided on the inner side bar body of the bumper (A) near the lower edge of the trailer opening (A1), and a first guide rail (50) is connected to the mounting frame (A3). The first guide rail (50) is arranged along the vehicle width direction. The movable card (41) is arranged on the first guide rail (50) and forms a guide limit match therewith. The anti-return claw (11) is arranged relative to one end face of the first guide rail (50) in the vehicle width direction. A tension spring (42) is provided on the side of the movable card (41) away from the anti-return claw (11). The two ends of the tension spring (42) connect the movable card (41) and the first guide rail (50), and the elastic force provided by the tension spring (42) drives the movable card (41) to move away from the anti-return claw (11) along the first guide rail (50).

4. The automobile trailer hook cover assembly according to claim 3, characterized in that: A second guide rail (60) is provided at an end surface position of the first guide rail (50) adjacent to the non-return claw (11), the second guide rail (60) being arranged along the vehicle length direction, a movable seat (61) being provided on the second guide rail (60), the movable seat (61) and the second guide rail (60) forming a guide limit fit, the movable card (41) being annular in structure and the through direction of its center hole being arranged along the vehicle length direction, the movable seat (61) being located in the center hole of the movable card (41) and limiting the movable card (41) from moving along the first guide rail (50) or being located in a separation position to avoid the movable card (41) from moving along the movable path.

5. The automobile trailer hook cover assembly according to claim 4, characterized in that: A first wedge-shaped surface (412) is provided on a side of the movable card (41) close to the non-return claw (11), and the first wedge-shaped surface (412) is located on a side of the movable card (41) opposite to the non-return surface (411). A second wedge-shaped surface (611) is provided on the movable seat (61). When the non-return surface (411) is reset and displaced to a non-return matching position for resisting the non-return table (111), the movable seat (61) is located in the hole area of ​​the movable card (41) and limits the displacement of the movable card (41) in the vehicle width direction; when the non-return surface (411) is displaced to a separation position for avoiding the moving path of the non-return table (111), the movable seat (61) is located outside the outer end hole of the movable card (41), and the second wedge-shaped surface (611) and the first wedge-shaped surface (412) are in contact with each other to form an inclined surface match.

6. The automobile trailer hook cover assembly according to claim 5, characterized in that: A connecting seat (612) is connected to the side of the movable seat (61) facing the vehicle cabin, and the connecting seat (612) and the second guide rail (60) form a guide limit fit. The size of the connecting seat (612) in the vehicle width direction is smaller than the aperture of the annular hole of the movable card (41). A lever (70) is hingedly connected to the mounting frame (A3) by a vertical hinge shaft (71). The rod body of the lever (70) is located in the horizontal direction, and the non-return claw (11) and the connecting seat (612) are located on the side of the lever (70) facing the outside of the vehicle body. One end of the lever (70) is located in the movement path of the non-return claw (11). The other end is located on the movement path of the connecting seat (612). When the non-return claw (11) moves from the non-return matching position toward the vehicle driving compartment, the free end of the non-return claw (11) pushes one end of the lever (70) and drives the other end of the lever (70) to push the connecting seat (612) and the movable seat (61) to move toward the outside of the vehicle body along the second guide rail (60). When the movable seat (61) moves toward the outside of the vehicle body along the second guide rail (60) to the outside of the outer end opening of the movable clamp (41), the second wedge surface (611) of the movable seat (61) and the first wedge surface (412) are in contact with each other to form an inclined surface match.

7. The automobile trailer hook cover assembly according to claim 6, characterized in that: The lever (70) and the mounting frame (A3) form a damping rotation fit.

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