External door hinge with bulletproof function

Abstract

The utility model discloses an external hinge for a vehicle door with a bulletproof function, which relates to the technical field of automotive parts and components, and comprises a hinge fixing seat, a hinge shaft is connected through the middle of the right end of the hinge fixing seat, a threaded fixing column is arranged on the right side of the hinge fixing seat, a placement cavity is provided inside the threaded fixing column, a movable column is slidably connected inside the placement cavity, a spring is sleeved on the outer side of the lower end of the movable column, and the left and right sides of the middle of the movable column are integrally connected with a limited block, the hinge fixing seat is rotatably connected with a hinge rotating seat through the hinge shaft, and a right notch groove is provided in the middle of the left end of the hinge rotating seat. The external hinge for a vehicle door with a bulletproof function increases the friction resistance by driving the contact between the ball and the rubber pad when the convex shaft rotates, and the corresponding limit of the movable column and the limit groove and the resistance of a large number of blocks on the surface of the movable column and the right notch groove are coordinated to further enhance the rebound effect of the vehicle door, thereby improving the opening effect of the vehicle door.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts and components, in particular to an external hinge for a vehicle door with a bulletproof function. Background Art

[0002] The door hinge is the connection mechanism between the door and the body of the car, and a mechanical device that allows relative rotation between the two. Each door has two hinges, which are ordinary steel castings. Once the hinge is damaged, the entire door will fall off, and the people in the car will be exposed to the external environment, which is not conducive to continuing the mission. At the same time, the vehicle's protective performance is also greatly reduced.

[0003] For example, the utility model with application number CN202221160128.0 discloses an external door hinge with bulletproof function, including a hinge body and a protective cover, wherein the protective cover includes a fixed-end protective cover arranged on the vehicle body and a rotating-end protective cover arranged on the door, both of which are made of bulletproof steel plates; one end of the rotating-end protective cover is rotatably arranged in the fixed-end protective cover, and when the hinge body rotates to open and close the door, the fixed-end protective cover and the rotating-end protective cover are intertwined with each other, and there is no interference between the two, which ensures the normal operation of the hinge body while providing a bulletproof protection function for the hinge body, thereby improving the protection capability of the entire vehicle, effectively protecting the safety of people in the vehicle, and enabling the vehicle to effectively perform tasks in a complex battlefield environment.

[0004] The current external door hinges similar to the above application still have the following deficiencies:

[0005] When the user pushes the door open quickly, it is easy for the door to open to the limit and then bounce back due to the elasticity, which not only affects normal entry and exit, but also easily injures people.

[0006] Therefore, in view of this, the existing structure and defects are studied and improved, and an external door hinge with bulletproof function is proposed. Utility Model Content

[0007] The utility model aims to provide an external door hinge with bulletproof function to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an external hinge of a vehicle door with a bulletproof function, comprising a hinge fixing seat, a hinge rotating shaft is penetrated and connected to the middle part of the right end of the hinge fixing seat, a threaded fixing column is arranged on the right side of the hinge fixing seat, a placement cavity is opened in the threaded fixing column, a movable column is slidably connected in the placement cavity, a spring is sleeved on the outer side of the lower end of the movable column, and a limited block is integrally connected to the left and right sides of the middle part of the movable column, the hinge fixing seat is rotatably connected to the hinge rotating seat through the hinge rotating shaft, a right notch is opened in the middle part of the left end of the hinge rotating seat, a block is fixedly connected to the surface of the right notch, a limited slot is opened at the rear end of the right notch, a convex shaft is integrally connected to the upper and lower ends of the inner side of the hinge rotating seat, a right concave hole is opened at the front end of the convex shaft, and a left concave hole is opened at the left end of the convex shaft, a sliding cavity is opened at the upper and lower ends of the hinge fixing seat, a ball is connected to the inside of the sliding cavity, and a rubber pad is bonded to the inner wall of the sliding cavity.

[0009] Furthermore, limit washers are provided at the upper and lower ends of the hinge rotating seat, and the hinge rotating shaft passes through the inside of the limit washers.

[0010] Furthermore, a left cutout groove is provided at the front end of the inner side of the hinge rotating seat.

[0011] Furthermore, the movable column is elastically connected to the threaded fixing column through a spring, and three threaded fixing columns are equidistantly arranged on the right side of the hinge fixing seat.

[0012] Furthermore, the sliding cavity is inclined with the left side higher and the right side lower.

[0013] Furthermore, the depth of the right concave hole is greater than that of the left concave hole, and the structural dimensions of the inner walls of the right concave hole and the left concave hole are consistent with the structural dimensions of the outer wall of the ball.

[0014] Furthermore, the ball is elastically connected to the rubber pad, and the ball is slidably connected to the sliding cavity via the convex shaft.

[0015] The utility model provides an external door hinge with bulletproof function, which has the following beneficial effects:

[0016] The utility model increases the friction resistance by driving the contact between the ball and the rubber pad when the cam shaft rotates, and correspondingly cooperates with the limiting effect of the movable column and the limiting groove and the resistance effect of a large number of blocks on the surface of the movable column and the right cutout groove to further enhance the rebound effect of the vehicle door, thereby improving the opening effect of the vehicle door. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the front structure of an external door hinge with bulletproof function according to the utility model;

[0018] Figure 2This is a schematic cross-sectional view of the structure of a movable column of an external hinge for a vehicle door with a bulletproof function according to the utility model;

[0019] Figure 3 It is a schematic diagram of the partial structure of a hinge rotating seat of an external hinge of a vehicle door with bulletproof function according to the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of a convex shaft and a hinge rotating seat of an external hinge for a vehicle door with a bulletproof function according to the utility model;

[0021] Figure 5 The utility model is a schematic diagram of the convex shaft structure of an external hinge of a vehicle door with a bulletproof function.

[0022] In the figure: 1. hinge fixing seat; 2. hinge rotating shaft; 3. limiting washer; 4. threaded fixing column; 5. placement cavity; 6. movable column; 7. spring; 8. limiting block; 9. hinge rotating seat; 10. left cutout groove; 11. right cutout groove; 12. stopper; 13. limiting groove; 14. convex shaft; 15. right concave hole; 16. left concave hole; 17. sliding cavity; 18. ball bearing; 19. rubber pad. DETAILED DESCRIPTION

[0023] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0024] like Figure 1 , Figure 4 and Figure 5As shown, an external hinge for a vehicle door with a bulletproof function comprises a hinge fixing seat 1, a hinge shaft 2 is connected through the middle of the right end of the hinge fixing seat 1, a threaded fixing column 4 is arranged on the right side of the hinge fixing seat 1, a placement cavity 5 is provided inside the threaded fixing column 4, a movable column 6 is slidably connected inside the placement cavity 5, a spring 7 is sleeved on the outer side of the lower end of the movable column 6, and a limiting block 8 is integrally connected to the left and right sides of the middle of the movable column 6, the hinge fixing seat 1 is rotatably connected to a hinge rotating seat 9 through the hinge shaft 2, a right notch groove 11 is provided in the middle of the left end of the hinge rotating seat 9, a stopper 12 is fixedly connected to the surface of the right notch groove 11, and a limiting groove 13 is provided at the rear end of the right notch groove 11, a convex shaft 14 is integrally connected to the upper and lower ends of the inner side of the hinge rotating seat 9, a right concave hole 15 is provided at the front end of the convex shaft 14, and a left The concave hole 16 and the hinge fixing seat 1 are provided with sliding cavities 17 at the upper and lower ends. The sliding cavity 17 is inclined with the left side higher and the right side lower. The depth of the right concave hole 15 is greater than that of the left concave hole 16. The structural dimensions of the inner walls of the right concave hole 15 and the left concave hole 16 are consistent with the structural dimensions of the outer wall of the ball 18. When the ball 18 rotates in the left concave hole 16 through the convex shaft 14 and slides from right to left in accordance with the sliding cavity 17, the ball 18 continuously raises its own height along the sliding cavity 17. Similarly, when rotating in the opposite direction, the ball 18 is separated from the shallower left concave hole 16 until the right concave hole 15 contacts the ball 18, driving the ball 18 to roll to the left. The height of the right concave hole 15 is only half of that of the left concave hole 16. After falling back a certain distance, the ball 18 automatically separates from the right concave hole 15 and slides to the lowest point of the left end of the sliding cavity 17 in accordance with the sliding cavity 17, which is convenient for the movement of the ball 18.

[0025] like Figure 4 and Figure 5 As shown, a ball 18 is connected to the inside of the sliding cavity 17, a rubber pad 19 is bonded to the inner wall of the sliding cavity 17, the ball 18 is elastically connected to the rubber pad 19, the ball 18 is slidably connected to the sliding cavity 17 through the convex shaft 14, and the convex shaft 14 rotates to drive the ball 18 to slide in the sliding cavity 17 and fit with the rubber pad 19 to increase the friction resistance between the two, thereby preventing the vehicle door from rebounding due to the reaction force.

[0026] like Figure 1 , Figure 2 and Figure 3As shown, the upper and lower ends of the hinge rotating seat 9 are provided with limiting washers 3, and the hinge shaft 2 runs through the limiting washers 3. A left cutout groove 10 is provided at the front end of the inner side of the hinge rotating seat 9. The movable column 6 is elastically connected to the threaded fixing column 4 through the spring 7. Three threaded fixing columns 4 are equidistantly arranged on the right side of the hinge fixing seat 1. When the hinge rotating seat 9 rotates, the left cutout groove 10 at its end will contact the movable column 6, and through the contact of its oblique surface, the movable column 6 compresses the spring 7 so that the movable column 6 is pushed up and retracted into the placement cavity 5 of the threaded fixing column 4 until the movable column 6 enters the limiting groove 13 to limit the hinge rotating seat 9 after the hinge fixing seat 1 is flipped to the top, thereby increasing the rotational friction resistance between the two to prevent the door from rebounding due to the reaction force after being pushed open quickly.

[0027] In summary, if Figures 1 to 5 As shown, the external hinge for a car door with a bulletproof function, when in use, first when the user opens the car door, the hinge rotating seat 9 flips outwards through the hinge rotating shaft 2, and at this time the convex shaft 14 rotates and contacts the left concave hole 16 on the left side to receive the ball 18, driving the ball 18 to slide to the right. After sliding a certain distance, since the bottom end of the left concave hole 16 is hollow, the ball 18 disengages from the sliding cavity 17 and slides to the bottom of the right end. In this process, the ball 18 has less contact with the rubber pad 19 and does not cause excessive friction resistance, which is convenient for the user to open the car door until it slides to the bottom. When the car door is opened to the top, it rebounds due to the rebound effect. At this time, the convex shaft 14 rotates a short distance to the left The ball 18 just falls into the shallow right concave hole 15 of the convex shaft 14, and the ball 18 fits with the rubber pad 19. The convex shaft 14 continues to turn left with a large friction resistance, which has the effect of preventing rebound. At the same time, when the door is opened to the top, the movable column 6 will also enter the limit groove 13 for a certain limit. When the door rebounds, the movable column 6 will contact the block 12 on the surface of the right notch groove 11, which increases the friction resistance between the movable column 6 and the block 12 accordingly, which has the effect of preventing the door from rebounding. Correspondingly, the door limiter that is already equipped on the vehicle on the market further ensures the use effect of the entire door, thus completing the use process of the entire external door hinge with bulletproof function.

[0028] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A bulletproof vehicle door external hinge, comprising a hinge fixing seat (1), characterized in that: A hinge shaft (2) is connected through the middle of the right end of the hinge fixing seat (1), a threaded fixing column (4) is arranged on the right side of the hinge fixing seat (1), a placement cavity (5) is provided inside the threaded fixing column (4), a movable column (6) is slidably connected inside the placement cavity (5), a spring (7) is sleeved on the outer side of the lower end of the movable column (6), and a limiting block (8) is integrally connected to the left and right sides of the middle of the movable column (6), the hinge fixing seat (1) is rotatably connected to a hinge rotating seat (9) through the hinge rotating shaft (2), and the middle of the left end of the hinge rotating seat (9) is provided with a spring (7) sleeved on the outer side of the lower end of the movable column (6), and the left and right sides of the middle of the movable column (6) are integrally connected. A right notch groove (11) is provided, a stopper (12) is fixedly connected to the surface of the right notch groove (11), a limiting groove (13) is provided at the rear end of the right notch groove (11), a convex shaft (14) is integrally connected to the upper and lower ends of the inner side of the hinge rotating seat (9), a right concave hole (15) is provided at the front end of the convex shaft (14), a left concave hole (16) is provided at the left end of the convex shaft (14), a sliding cavity (17) is provided at the upper and lower ends of the hinge fixed seat (1), a ball bearing (18) is connected inside the sliding cavity (17), and a rubber pad (19) is bonded to the inner wall of the sliding cavity (17).

2. The bulletproof exterior door hinge according to claim 1, characterized in that: Limiting washers (3) are arranged at the upper and lower ends of the hinge rotating seat (9), and the hinge rotating shaft (2) passes through the inside of the limiting washers (3).

3. The bulletproof door external hinge according to claim 1, characterized in that: A left cutout groove (10) is provided at the front end of the inner side of the hinge rotating seat (9).

4. The bulletproof door external hinge according to claim 1, characterized in that: The movable column (6) is elastically connected to the threaded fixing column (4) via a spring (7), and three threaded fixing columns (4) are arranged at equal distances on the right side of the hinge fixing seat (1).

5. The bulletproof door external hinge according to claim 1, characterized in that: The sliding cavity (17) is in an inclined shape with the left side higher and the right side lower.

6. The bulletproof exterior door hinge according to claim 1, characterized in that: The depth of the right concave hole (15) is greater than that of the left concave hole (16), and the structural dimensions of the inner walls of the right concave hole (15) and the left concave hole (16) are consistent with the structural dimensions of the outer wall of the ball (18).

7. The bulletproof exterior door hinge according to claim 1, characterized in that: The ball (18) is elastically connected to the rubber pad (19), and the ball (18) is slidably connected to the sliding cavity (17) via the convex shaft (14).

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