Wear-resistant structure

Abstract

The utility model relates to the technical field of vehicle doors, in particular to a wear-resistant structure which comprises a connecting arm, a pin shaft and a fork head, a through hole is formed in one end of the connecting arm, inserting holes are formed in two forks of the fork head, nylon bearings are arranged in the inserting holes and the through hole, and the end, provided with the through hole, of the connecting arm is inserted between the two forks of the fork head; and the pin shaft sequentially penetrates through the insertion hole, the through hole and the insertion hole, and the pin shaft is provided with a clamping structure, so that the pin shaft can be rotationally connected with the fork head and the connecting arm. The effect of preventing the joint of the vehicle door and the vehicle body from being abraded is achieved.

Description

Technical Field

[0001] This application relates to the field of vehicle door technology, and in particular to a wear-resistant structure. Background Technology

[0002] Cars have become a common means of transportation, entering thousands of households. As cars become more and more popular and are used more and more frequently in daily life, people are paying more and more attention to the opening and closing characteristics of car doors, including whether the doors can be used normally and remain durable, whether they can be opened and closed normally, and whether the gaps and surface differences between the doors and surrounding components are maintained.

[0003] The existing door hinge pivot structure has the following problems during use: Since the rotation force in the door hinge relies entirely on the pivot pin and lacks other auxiliary force-bearing structures, the hinge pivot is prone to wear after long-term use, which may cause the door to not seal properly when closed and may easily create safety hazards. Utility Model Content

[0004] This application provides a wear-resistant structure to reduce wear at the connection between the door and the body.

[0005] The above-mentioned technical objective of this application is achieved through the following technical solution:

[0006] A wear-resistant structure includes a connecting arm, a pin, and a fork. A through hole is provided at one end of the connecting arm, and insertion holes are provided on the two forks of the fork. Nylon bearings are provided in both the insertion holes and the through hole. The end of the connecting arm with the through hole is inserted between the two forks of the fork. The pin passes through the insertion hole, the through hole, and the insertion hole. The pin is provided with a snap-fit ​​structure so that the pin can be rotatably connected to the fork and the connecting arm.

[0007] By adopting the above solution, nylon bearings are installed between the fork head and the pin, as well as between the connecting arm and the pin, reducing friction between the fork head and the connecting arm and the pin, thereby reducing wear at the automotive connection points.

[0008] Optionally, multiple ball grooves are provided at the through hole of the connecting arm, and the multiple ball grooves are arranged in a circumferential array. Spherical balls are provided in the ball grooves, and when the connecting arm is connected to the fork head, the spherical balls abut against the surface of the fork head.

[0009] By adopting the above solution, since the door has its own weight, the gravity of the door will act on the connection between the connecting arm and the fork, causing the upper and lower surfaces of the connecting arm to rub against the fork. By setting spherical balls to reduce the friction between the upper and lower surfaces of the connecting arm and the plug, the wear at the connection between the car and the door will be further reduced.

[0010] Optionally, the snap-fit ​​structure includes a rotating head, a limiting plate fixedly connected to one end of the pin, an external thread on the circumferential surface of the pin opposite to the limiting plate, a threaded groove on one side surface of the rotating head, and the pin being threadedly connected to the rotating head.

[0011] By adopting the above solution, the pin and the rotating head are threaded together, and the rotating head and the limiting plate block both ends of the pin, making the connection between the pin and the fork and the connecting arm more secure.

[0012] Optionally, the rotating head has a hexagonal groove on the side opposite to the threaded groove to facilitate the operator's rotation of the rotating head.

[0013] By adopting the above solution, operators can more easily rotate the rotating head, thus making it easier to install the pin.

[0014] Optionally, the pin shaft has an annular bearing groove on its circumferential surface, and a second bearing is rotatably connected in the bearing groove.

[0015] By adopting the above solution, the friction between the pin and the connecting arm is reduced by setting a second bearing.

[0016] Optionally, a filling groove is provided at one end of the pin away from the limiting plate, and an oil passage communicating with the bearing groove is provided in the filling groove.

[0017] By adopting the above solution, when adding lubricating oil, the operator can directly pour the lubricating oil into the filling tank, and then the lubricating oil fume channel enters the gap between the second bearing and the pin, making it easier for the operator to add lubricating oil.

[0018] Optionally, a spring is provided at the bottom of the filling groove, and a pressure plate is fixedly connected to the side of the spring away from the bottom of the filling groove. A push rod is fixedly connected in the threaded groove of the rotating head. When the rotating head is threadedly connected to the pin, the push rod will press the pressure plate, so that the filling groove is connected to the oil passage.

[0019] By adopting the above scheme, when the pin is not installed, the pressure plate seals the oil passage, thereby preventing impurities from entering the oil passage. When the pin is installed, lubricating oil is poured into the filling groove, and then the rotating head is connected to the pin. During the threaded connection between the rotating head and the pin, the push rod presses down the pressure plate, so that the oil passage is connected to the filling groove, allowing the lubricating oil in the filling groove to smoothly enter the gap between the second bearing and the pin.

[0020] In summary, this application has the following technical effects:

[0021] 1. By incorporating nylon bearings, friction between the pins, forks, and connecting arms is reduced, thereby decreasing wear at the connection between the door and the body.

[0022] 2. The installation of the pin is made easier by incorporating a rotating head;

[0023] 3. The addition of oil channels makes it easier for operators to add lubricating oil. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this application;

[0025] Figure 2 This is an exploded view of the overall structure of this application;

[0026] Figure 3 This is a partial structural cross-sectional view intended to emphasize the structure within the filling groove in this application;

[0027] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0028] In the diagram, 1 is the connecting arm; 11 is the through hole; 12 is the ball bearing; 2 is the pin; 21 is the limiting plate; 22 is the bearing groove; 23 is the filling groove; 24 is the oil passage; 25 is the spring; 26 is the pressure plate; 3 is the fork head; 31 is the insertion hole; 4 is the nylon bearing; 5 is the rotating head; 51 is the threaded groove; 52 is the hexagonal groove; 53 is the push rod; and 6 is the second bearing. Detailed Implementation

[0029] The present application will be further described in detail below with reference to the accompanying drawings.

[0030] Reference Figure 1 and Figure 2 A wear-resistant structure includes a connecting arm 1, a pin 2, and a fork 3. A through hole 11 is provided at one end of the connecting arm 1, and insertion holes 31 are provided on the two forks of the fork 3. Nylon bearings 4 are installed in both the insertion holes 31 and the through hole 11. The end of the connecting arm 1 with the through hole 11 is inserted between the two forks of the fork 3. The pin 2 passes through the insertion holes 31, the through hole 11, and the insertion hole 31. The pin 2 has a snap-fit ​​structure, allowing it to rotatably connect with the fork 3 and the connecting arm 1. The nylon bearings 4 between the fork 3 and the pin 2, and between the connecting arm 1 and the pin 2, reduce friction between them, thereby reducing wear at the automotive connection points.

[0031] Reference Figure 1 and Figure 2Multiple ball grooves are formed at the through hole 11 on the connecting arm 1, and these grooves are arranged in a circumferential array. Spherical balls 12 are installed within each ball groove. When the connecting arm 1 is connected to the fork 3, the spherical balls 12 abut against the surface of the fork 3. Due to the weight of the car door, the gravity of the door acts on the connection point between the connecting arm 1 and the fork 3, causing friction between the upper and lower surfaces of the connecting arm 1 and the fork 3. The spherical balls 12 reduce this friction, thereby further reducing wear at the connection point between the car and the door.

[0032] Reference Figure 2 and Figure 3 The snap-fit ​​structure includes a rotating head 5. A limiting plate 21 is fixedly connected to one end of the pin 2. An external thread is formed on the circumferential surface of the end of the pin 2 facing away from the limiting plate 21. A threaded groove 51 is formed on one side surface of the rotating head 5, and the pin 2 is threadedly connected to the rotating head 5. A hexagonal groove 52 is formed on the side of the rotating head 5 facing away from the threaded groove 51 to facilitate the operator's rotation of the rotating head 5. The threaded connection between the pin 2 and the rotating head 5 causes the rotating head 5 and the limiting plate 21 to block both ends of the pin 2, making the connection between the pin 2, the fork head 3, and the connecting arm 1 more secure.

[0033] Reference Figure 3 and Figure 4 The pin 2 has an annular bearing groove 22 on its circumferential surface, and a second bearing 6 is rotatably connected in the bearing groove 22. A filling groove 23 is formed at the end of the pin 2 away from the limiting plate 21, and an oil passage 24 communicating with the bearing groove 22 is formed in the filling groove 23. A spring 25 is provided at the bottom of the filling groove 23, and a pressure plate 26 is fixedly connected to the side of the spring 25 away from the bottom of the filling groove 23. A push rod 53 is fixedly connected in the threaded groove 51 of the rotating head 5. When the rotating head 5 is threadedly connected to the pin 2, the push rod 53 will press the pressure plate 26, causing the filling groove 23 to communicate with the oil passage 24. When the pin 2 is not installed, the pressure plate 26 seals the oil passage 24 to prevent impurities from entering the oil passage 24. When the pin 2 is installed, lubricating oil is poured into the filling groove 23. Then the rotating head 5 is connected to the pin 2. During the threaded connection between the rotating head 5 and the pin 2, the push rod 53 presses down the pressure plate 26 to connect the oil passage 24 with the filling groove 23, so that the lubricating oil in the filling groove 23 can smoothly enter the gap between the second bearing 6 and the pin 2.

[0034] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A wear-resistant structure, characterized in that: The device includes a connecting arm (1), a pin (2), and a fork (3). A through hole (11) is provided at one end of the connecting arm (1), and insertion holes (31) are provided on the two forks of the fork (3). Nylon bearings (4) are provided in both the insertion holes (31) and the through holes (11). The end of the connecting arm (1) with the through hole (11) is inserted between the two forks of the fork (3). The pin (2) is passed through the insertion hole (31), the through hole (11), and the insertion hole (31) in sequence. The pin (2) is provided with a snap-fit ​​structure so that the pin (2) can be rotatably connected with the fork (3) and the connecting arm (1).

2. The wear-resistant structure according to claim 1, characterized in that: Multiple ball grooves are provided at the through hole (11) on the connecting arm (1), and the multiple ball grooves are arranged in a circular array. Spherical balls (12) are provided in the ball grooves. When the connecting arm (1) is connected to the fork (3), the spherical balls (12) abut against the surface of the fork (3).

3. The wear-resistant structure according to claim 1, characterized in that: The snap-fit ​​structure includes a rotating head (5), a limiting plate (21) is fixedly connected to one end of the pin (2), an external thread is provided on the circumferential surface of the pin (2) away from the limiting plate (21), a threaded groove (51) is provided on one side surface of the rotating head (5), and the pin (2) is threadedly connected to the rotating head (5).

4. The wear-resistant structure according to claim 3, characterized in that: The rotating head (5) has a hexagonal groove (52) on the side away from the threaded groove (51) to facilitate the operator to rotate the rotating head (5).

5. The wear-resistant structure according to claim 3, characterized in that: The pin (2) has an annular bearing groove (22) on its circumferential surface, and a second bearing (6) is rotatably connected in the bearing groove (22).

6. The wear-resistant structure according to claim 5, characterized in that: The pin (2) has a filling groove (23) at one end away from the limiting plate (21), and an oil passage (24) communicating with the bearing groove (22) is provided in the filling groove (23).

7. The wear-resistant structure according to claim 6, characterized in that: A spring (25) is provided at the bottom of the filling groove (23). A pressure plate (26) is fixedly connected to the side of the spring (25) away from the bottom of the filling groove (23). A push rod (53) is fixedly connected in the threaded groove (51) of the rotating head (5). When the rotating head (5) is threadedly connected to the pin (2), the push rod (53) will press the pressure plate (26) to make the filling groove (23) connect with the oil passage (24).

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