Push rod cam follow-up automobile tailboard

Abstract

The utility model discloses a push rod cam follow-up automobile tailboard, which relates to the technical field of automobile tailboards, and is characterized by comprising a rack, a lifting arm, an electric push rod, a fixed beam, a lifting seat and a bearing platform, the rack is provided with a push rod connecting plate connected with one end of the electric push rod in an up-down rotating mode, a lifting connecting plate connected with the lifting arm in an up-down rotating mode and a connecting plate set connected with the fixed beam. The connecting plate set is provided with a horizontal moving groove set, and a sliding pin shaft matched with the horizontal moving groove set in an inserted mode and a driving piece used for being matched with the rack to drive the sliding pin shaft to horizontally move along the horizontal moving groove set are connected to the corresponding end of the fixed beam in an inserted mode. And when the sliding pin shaft moves from one end of the horizontal moving groove to one end close to the rack, one end, far away from the rack, of the bearing platform performs head lowering action. The distance between the sliding pin shaft and the rack is adjusted, so that the effect of automatically and efficiently lowering and raising the head is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile tail plates, and more specifically to a push rod cam follower automobile tail plate. Background Art

[0002] With the development of my country's logistics industry, the demand for tailgate installation on vehicles continues to grow.

[0003] In the prior art, most car tailgates use five oil cylinders to control the leveling, lifting and flipping of the tailgate, so the overall structure is complex and heavy, resulting in a large volume, which will be subject to certain restrictions on uphill and downhill roads, thus limiting the scope of use.

[0004] A Chinese patent application document with publication number CN116890728A discloses a car tailboard with self-locking and automatic unlocking functions. The car tailboard with self-locking and automatic unlocking functions adopts a follow-up scheme of a multi-link mechanism composed of a main beam, a load-bearing platform, a lifting cylinder, a follower arm, and a lifting beam to realize the tailboard lowering and raising movements, and uses a locking structure to lock the follower arm to increase the load-bearing capacity of the load-bearing platform to ensure stability. However, there is a problem of complex structure, which makes it difficult for the car tailboard with self-locking and automatic unlocking functions to efficiently realize the lowering and raising movements, and needs to be improved. Utility Model Content

[0005] In view of this, the purpose of this application is to provide a push rod cam follower automobile tailgate to optimize the structure and achieve the purpose of automatic and efficient head-down and head-up functions. The specific scheme is as follows:

[0006] The cam follower automobile tail plate comprises a frame, a lifting arm, an electric push rod, a fixed beam, a lifting seat and a bearing platform, wherein the frame is provided with a push rod connecting plate connected to one end of the electric push rod for vertical rotation, a lifting connecting plate connected to the lifting arm for vertical rotation and a connecting plate group connected to the fixed beam; the connecting plate group is provided with a horizontal movement groove group, and the corresponding end of the fixed beam is plugged with a sliding pin shaft plugged with the horizontal movement groove group and a driving member for cooperating with the frame to drive the sliding pin shaft to move horizontally along the horizontal movement groove group, and when the sliding pin shaft is located at the end of the horizontal movement groove group away from the frame, the bearing platform is horizontal, and when the sliding pin shaft moves toward the end close to the frame, the bearing platform lowers its head at the end away from the frame.

[0007] Preferably: the connecting plate group includes an outer connecting plate and an inner connecting plate, the horizontally movable groove group includes a sliding large waist groove located on the outer connecting plate and a sliding small waist groove located on the inner connecting plate; the width of the sliding large waist groove is greater than the width of the sliding small waist groove.

[0008] Preferably: the sliding pin shaft comprises a large cylinder and a small cylinder connected in sequence, and the end of the large cylinder close to the small cylinder is provided with two symmetrically distributed wide and flat openings that are plug-matched with the sliding large waist groove, and an end surface is formed between the wide and flat openings and the large cylinder; the end of the small cylinder away from the large cylinder is provided with two symmetrically distributed narrow and flat openings that are plug-matched with the sliding small waist groove, and the end of the narrow and flat opening away from the large cylinder is used to pass through the sliding small waist groove and is provided with a through hole for preventing the sliding pin shaft from falling off.

[0009] Preferably: the small cylindrical surface is provided with a lubrication groove, and the lubrication groove is provided with an oil hole.

[0010] Preferably: the driving member includes a cam body, the fixed beam includes a square beam, a sleeve connected to one end of the square beam and a cam seat connected and fixed to the outer peripheral side wall of the sleeve; the sleeve is sleeved on the sliding pin shaft, the cam seat is detachably connected and fixed to the cam body, and the cam body abuts against the frame.

[0011] Preferably: the frame is provided with a cam push plate for abutting against the cam body, and the cam push plate is fixed in the connecting plate group by countersunk screws.

[0012] Preferably: a cam arc surface, a transition arc and a push surface which are sequentially connected from top to bottom are provided on the side of the cam body away from the cam seat, and a chamfer is provided on the lower side of the push surface; the center of the cam arc surface is located at point O of the axis of the sliding pin, and the distance from the transition arc and the push surface to point O of the axis of the sliding pin gradually decreases.

[0013] Preferably: the outer side of the cam seat is arc-shaped and the center of the circle is located at the axis point O of the sliding pin shaft, the outer side of the cam seat is provided with connecting serrations and threaded holes, the cam body is provided with matching serrations and mounting holes that match and plug with the connecting serrations, and the mounting hole is plugged with a connecting bolt, and the connecting bolt is threadedly connected to the threaded hole.

[0014] Preferably: the cam body is provided with a plurality of mounting holes and bolt countersunk holes matching and communicating with the mounting holes.

[0015] Preferably, the connecting serrations and the matching serrations are in an inverted trapezoidal shape.

[0016] It can be seen from the above scheme that the present application provides a push rod cam follower automobile tailgate, and the push rod cam follower automobile tailgate has the following beneficial effects:

[0017] 1. The cam seat on the fixed beam is matched and connected with the cam body, and then the cam arc surface, transition arc and push surface on one side of the cam body are in contact with the cam push plate on the frame, so as to achieve the effect of moving the sliding pin along the sliding large waist groove and the sliding small waist groove, thereby realizing the head-down and head-up function of the load-bearing platform;

[0018] 2. The movement of the sliding pin is limited by the sliding large waist groove and the sliding small waist groove, so that the sliding hinge between the frame and the fixed beam is realized, and the connection structure is stable;

[0019] 3. Multiple mounting holes on the cam body are matched with threaded holes respectively, so that when the connecting serrations are engaged with the matching serrations, the connection stability between the cam body and the cam seat is improved and the vehicle models with different heights from the ground are adapted;

[0020] 4. The cam slider is detachably connected to the cam body to facilitate the repair and replacement of the cam slider after excessive wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of this embodiment;

[0022] Figure 2 is a schematic structural diagram of the rack of this embodiment;

[0023] Figure 3 2 is a left-side structural schematic diagram of the present embodiment;

[0024] Figure 4 is a schematic cross-sectional view of the mechanism of this embodiment;

[0025] Figure 5 is a schematic structural diagram of the fixed beam of this embodiment;

[0026] Figure 6 is a schematic diagram of a partial cross-sectional structure of a fixed beam of this embodiment;

[0027] Figure 7 is a schematic structural diagram of the sliding pin shaft of this embodiment;

[0028] Figure 8 is a structural schematic diagram of the load-bearing platform of this embodiment in a high position;

[0029] Fig. 9 It is a structural schematic diagram of the load-bearing platform of this embodiment in a low position.

[0030] Description of reference numerals: 01, frame; 02, lifting arm; 03, electric push rod; 04, fixed beam; 05, lifting seat; 06, bearing platform; 10, outer connecting plate; 11, inner connecting plate; 12, lifting connecting plate; 13, push rod connecting plate; 15, sliding large waist groove; 16, sliding small waist groove; 20, sliding pin shaft; 21, hinged body; 25, cam push plate; 26, countersunk screw; 27, square beam; 28 , sleeve; 29, cam seat; 30, cam body; 31, connecting bolt; 32, connecting serration; 33, threaded hole; 34, matching serration; 35, mounting hole; 36, bolt countersunk hole; 37, cam arc surface; 38, transition arc; 39, push surface; 40, large cylinder; 41, end face; 42, wide flat mouth; 43, small cylinder; 44, narrow flat mouth; 45, through hole; 46, lubrication groove; 47, oil hole. DETAILED DESCRIPTION

[0031] In order to make the technical solution and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0032] like Figure 1 As shown, a push rod cam follower automobile tailgate includes a frame 01, a lifting arm 02, an electric push rod 03, a fixed beam 04, a lifting seat 05 and a bearing platform 06.

[0033] like Figure 1 , Figure 2 As shown, the frame 01 is provided with a push rod connecting plate 13 connected to one end of the electric push rod 03 for vertical rotation, a lifting connecting plate 12 connected to the lifting arm 02 for vertical rotation, and a connecting plate group connected to the fixed beam 04. Among them, the connecting plate group is provided with a horizontal movement slot group, and the corresponding end of the fixed beam 04 is plugged with a sliding pin 20 plugged with the horizontal movement slot group and a driving member for driving the sliding pin 20 to move horizontally along the horizontal movement slot group in cooperation with the frame 01, and when the sliding pin 20 is located at the end of the horizontal movement slot group away from the frame 01, the bearing platform 06 is horizontal, and when the sliding pin 20 moves toward the end close to the frame 01, the bearing platform 06 bows down at the end away from the frame 01.

[0034] like Figure 2 , Figure 3As shown, the push rod connecting plate 13 is connected to the electric push rod 03 for vertical rotation by setting a hinge body 21. The connecting plate group includes an outer connecting plate 10 and an inner connecting plate 11, and the horizontal movement groove group includes a sliding large waist groove 15 located on the outer connecting plate 10 and a sliding small waist groove 16 located on the inner connecting plate 11. Among them, the width of the sliding large waist groove 15 is greater than the width of the sliding small waist groove 16. Therefore, the two ends of the sliding pin 20 have the same stroke in the sliding large waist groove 15 and the sliding small waist groove 16. Correspondingly, the two ends of the sliding pin 20 are matched with the sliding large waist groove 15 and the sliding small waist groove 16 respectively, so as to prevent the sliding pin 20 from making a circumferential rotational motion while achieving the effect of making the sliding pin 20 move along the sliding large waist groove 15 and the sliding small waist groove 16.

[0035] like Figure 2 , Figure 4 As shown, the frame 01 is provided with a cam push plate 25 for abutting against the cam body 30, and the cam push plate 25 is fixed between the outer connecting plate 10 and the inner connecting plate 11 by a countersunk screw 26, so that the cam push plate 25 has the effect of matching with the driving member to realize the driving sliding pin shaft 20 to move.

[0036] like Figure 7 As shown, the sliding pin 20 includes a large cylinder 40 and a small cylinder 43 connected in sequence. The diameter of the large cylinder 40 is larger than the diameter of the small cylinder 43. Two wide flat openings 42 that are symmetrically distributed and plug-matched with the large sliding waist groove 15 are provided at one end of the large cylinder 40 close to the small cylinder 43, and an end surface 41 is formed between the wide flat opening 42 and the large cylinder 40. The end surface 41 is used to abut against the outer connecting plate 10. Two narrow flat openings 44 that are symmetrically distributed and plug-matched with the small sliding waist groove 16 are provided at one end of the small cylinder 43 away from the large cylinder 40, and a through hole 45 for preventing the sliding pin 20 from falling out is provided at one end of the narrow flat opening 44 away from the large cylinder 40 for passing through the small sliding waist groove 16. Inserting a pin in the through hole 45 can achieve the effect of preventing the sliding pin 20 from falling out of the small sliding waist groove 16 and the large sliding waist groove 15. At the same time, a lubrication groove 46 is provided on the small cylindrical surface 43, and an oil hole 47 is provided in the lubrication groove 46. The oil hole 47 is used to inject grease, and then diffuses to the small cylindrical surface 43 through the lubrication groove 46 to achieve the purpose of lubricating the sliding pin 20.

[0037] like Figure 5 , Figure 6As shown, the driving member includes a cam body 30. The fixed beam 04 includes a square beam 27, a sleeve 28 connected to one end of the square beam 27, and a cam seat 29 connected and fixed to the outer peripheral side wall of the sleeve 28. The sleeve 28 is sleeved on the sliding pin 20, the cam seat 29 is detachably connected and fixed to the cam body 30, and the cam body 30 is in contact with the frame 01. A cam arc surface 37, a transition arc 38 and a push surface 39 are provided on the side of the cam body 30 away from the cam seat 29, which are connected from top to bottom in sequence, and a chamfer is provided on the lower side of the push surface 39. The center of the cam arc surface 37 is located at the axis point O of the sliding pin 20, and the distance from the transition arc 38 and the push surface 39 to the axis point O of the sliding pin 20 gradually decreases.

[0038] like Figure 6 As shown, the outer side of the cam seat 29 is in an arc shape and the center of the circle is located at the axis point O of the sliding pin 20. A connecting serration 32 and a threaded hole 33 are provided on the outer side of the cam seat 29, and the cam body 30 is provided with a matching serration 34 and a mounting hole 35 that match and plug with the connecting serration 32. The connecting serration 32 and the matching serration 34 are both in the shape of an inverted trapezoid, so as to achieve the effect of mutual separation. The mounting hole 35 is plugged with a connecting bolt 31, and the connecting bolt 31 is threadedly connected with the threaded hole 33. Among them, a plurality of mounting holes 35 and bolt countersunk holes 36 that match and communicate with the mounting holes 35 are provided on the cam body 30. Therefore, based on the axis of each mounting hole 35 compared to the center point O of the circle, and the angle between the axes of each adjacent group of mounting holes 35 is a multiple of the sawtooth spacing angle, the cam body 30 can be rotated around the axis of the sliding pin 20 on the cam seat 29 at a set angle, and then fixed to the cam seat 29 by the connecting bolt 31, so as to achieve adaptation to vehicle models with different heights from the ground.

[0039] When using, Figure 8 , Fig. 9As shown, based on the push rod cam follower car tailgate during the lifting process, the fixed beam 04 is always under pressure. Therefore, when the bearing platform 06 rises to a high position, the bottom end of the fixed beam 04 rises, driving the cam to rotate counterclockwise around point O until the cam arc surface 37 abuts against the cam push plate 25, and the abutment of the cam push plate 25 prevents the sliding pin 20 from moving to the left. At this time, the two ends of the sliding pin 20 are respectively located on the right side of the sliding large waist groove 15 and the sliding small waist groove 16, and point B is located directly below point A. The quadrilateral composed of ABCD is a parallelogram, so that the bearing platform 06 is in a horizontal dressing table and is suitable for normal lifting and lowering movement. During the process of the bearing platform 06 descending, as the fixed beam 04, i.e., the cam body 30, rotates clockwise around the center O, when the transition arc 38 rotates to the left side of the center O, the thrust of the fixed beam 04 has a left component, which pushes the cam body 30 and the sliding pin 20 to the left, so that the transition arc 38 always abuts against the cam push plate 25. After the push surface 39 abuts against the cam push plate 25, the sliding pin 20 gradually moves to the left, and drives the C point at the lower end of the lifting seat 05 to move left, and the front end of the bearing platform 06 is driven to tilt downward to achieve the lowering action. Correspondingly, in the process from the lowering state to the rising state, the sliding pin 20 is pushed to the right by the abutment of the push surface 39 and the cam push plate 25, pushing the bearing platform 06 to gradually restore the horizontal level, so that the push rod cam follower car tail plate has an automatic and efficient lowering and raising function.

[0040] In summary, the present application provides a push rod cam follower automobile tail plate, which is matched and connected with the cam body 30 through the cam seat 29 on the fixed beam 04, and then the cam arc surface 37, the transition arc 38 and the push surface 39 on one side of the cam body 30 are in contact with the cam push plate 25 on the frame 01, so as to achieve the effect of moving the sliding pin 20 along the sliding large waist groove 15 and the sliding small waist groove 16, thereby realizing the head-down and head-up function of the bearing platform 06. At the same time, the movement of the sliding pin 20 is limited by the sliding large waist groove 15 and the sliding small waist groove 16, so as to realize the sliding hinge connection between the frame 01 and the fixed beam 04, and the connection structure is stable. In view of the needs of vehicle models with different heights from the ground, multiple mounting holes 35 are provided on the cam body 30 to match the threaded holes 33 respectively, so that when the connecting serrations 32 are engaged with the mating serrations 34, the connection stability between the cam body 30 and the cam seat 29 is improved and the vehicle models with different heights from the ground are adapted. The cam slider is detachably connected and abuts against the cam body 30, so as to facilitate the maintenance and replacement of the cam slider after excessive wear.

[0041] The "first", "second", "third", "fourth", etc. (if any) referred to in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods or devices.

[0042] It should be noted that the descriptions involving "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0043] Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A push rod cam follower automobile tailgate, comprising a frame (01), a lifting arm (02), an electric push rod (03), a fixed beam (04), a lifting seat (05) and a bearing platform (06), characterized in that: The frame (01) is provided with a push rod connecting plate (13) connected to one end of the electric push rod (03) for vertical rotation, a lifting connecting plate (12) connected to the lifting arm (02) for vertical rotation, and a connecting plate group connected to the fixed beam (04); the connecting plate group is provided with a horizontal movement groove group, and a corresponding end of the fixed beam (04) is plugged with a sliding pin (20) plugged into the horizontal movement groove group and a driving member for cooperating with the frame (01) to drive the sliding pin (20) to move horizontally along the horizontal movement groove group, and when the sliding pin (20) is located at the end of the horizontal movement groove group away from the frame (01), the bearing platform (06) is horizontal, and when the sliding pin (20) moves toward the end close to the frame (01), the bearing platform (06) lowers its head at the end away from the frame (01).

2. The push rod cam follower automobile tailgate according to claim 1, characterized in that: The connecting plate group comprises an outer connecting plate (10) and an inner connecting plate (11); the horizontally movable groove group comprises a large sliding waist groove (15) located on the outer connecting plate (10) and a small sliding waist groove (16) located on the inner connecting plate (11); the width of the large sliding waist groove (15) is greater than the width of the small sliding waist groove (16).

3. The push rod cam follower automobile tailgate according to claim 2, characterized in that: The sliding pin shaft (20) comprises a large cylindrical surface (40) and a small cylindrical surface (43) connected in sequence. The large cylindrical surface (40) is provided with two symmetrically distributed wide and flat openings (42) at one end close to the small cylindrical surface (43) and plugged in and matched with the large sliding waist groove (15), and an end surface (41) is formed between the wide and flat openings (42) and the large cylindrical surface (40); the small cylindrical surface (43) is provided with two symmetrically distributed narrow and flat openings (44) at one end away from the large cylindrical surface (40) and plugged in and matched with the small sliding waist groove (16), and the end of the narrow and flat opening (44) away from the large cylindrical surface (40) is used to pass through the small sliding waist groove (16) and is provided with a through hole (45) for preventing the sliding pin shaft (20) from falling off.

4. The push rod cam follower automobile tailgate according to claim 3, characterized in that: The small cylindrical surface (43) is provided with a lubrication groove (46), and an oil hole (47) is provided in the lubrication groove (46).

5. The push rod cam follower automobile tailgate according to claim 1, characterized in that: The driving member comprises a cam body (30), and the fixed beam (04) comprises a square beam (27), a shaft sleeve (28) connected to one end of the square beam (27), and a cam seat (29) connected and fixed to the outer peripheral side wall of the shaft sleeve (28); the shaft sleeve (28) is sleeved on the sliding pin shaft (20), the cam seat (29) and the cam body (30) are detachably connected and fixed, and the cam body (30) is in contact with the frame (01).

6. The push rod cam follower automobile tailgate according to claim 5, characterized in that: The frame (01) is provided with a cam push plate (25) for abutting against the cam body (30), and the cam push plate (25) is fixed in the connecting plate group by countersunk screws (26).

7. The push rod cam follower automobile tailgate according to claim 6, characterized in that: A cam arc surface (37), a transition arc (38) and a push surface (39) are provided on a side of the cam body (30) away from the cam seat (29) and are connected in sequence from top to bottom, and a chamfer is provided on the lower side of the push surface (39); the center of the cam arc surface (37) is located at a point O of the axis of the sliding pin shaft (20), and the distances from the transition arc (38) and the push surface (39) to the point O of the axis of the sliding pin shaft (20) gradually decrease.

8. The push rod cam follower automobile tailgate according to claim 5, characterized in that: The outer side of the cam seat (29) is in an arc shape and the center of the circle is located at the axis point O of the sliding pin shaft (20). The outer side of the cam seat (29) is provided with a connecting serration (32) and a threaded hole (33). The cam body (30) is provided with a matching serration (34) and a mounting hole (35) that match and plug with the connecting serration (32). The mounting hole (35) is plugged with a connecting bolt (31), and the connecting bolt (31) is threadedly connected to the threaded hole (33).

9. The push rod cam follower automobile tailgate according to claim 8, characterized in that: The cam body (30) is provided with a plurality of mounting holes (35) and bolt countersunk holes (36) matched and connected with the mounting holes (35).

10. The push rod cam follower automobile tailgate according to claim 8, characterized in that: The connecting saw teeth (32) and the matching saw teeth (34) are in an inverted trapezoidal shape.

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