Automobile door hinge assembly with improved structure

Abstract

This utility model discloses an improved automotive door hinge assembly, including a fixed hinge, an opening hinge, an elastic element, and a pivot. The fixed hinge has a connecting seat, the opening hinge has a connecting arm, and the pivot is located at the connection between the connecting arm and the connecting seat. The fixed hinge has a limiting element that restricts the rotation angle of the opening hinge, and the limiting element includes a connecting rod. The connecting seat has an arc-shaped groove that slides with the connecting rod. The beneficial effects are as follows: When the protrusion of the sliding block slides with the groove, a large force is required to make the relative displacement between the sliding block and the damping block occur because the sliding block and the damping block are tightly engaged. When the sliding block and the damping block are disengaged, the resistance experienced by the sliding block is reduced, so the sliding of the sliding block in the sliding cavity is smoother. This application achieves that the resistance is large when the car door is first opened, and the resistance decreases when the car door is opened to a certain angle.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automotive door hinge assembly with an improved structure. Background Technology

[0002] The car door hinge is responsible for the connection between the car body and the door. When opening the car door, if too much force is used or the door is opened too quickly, the impact force of the heavy door will be great, which will damage the hinge, causing the hinge to twist and the door frame to be crushed and deformed. Existing technology reduces the rigid impact that the door hinge has to withstand during the opening and closing process by setting a buffer mechanism on the door hinge.

[0003] Existing technologies can achieve a buffering function by connecting an elastic element between the fixed hinge and the hinge, and also have the function of adjusting the elastic force of the elastic element. However, adjusting the elastic force of the elastic element is relatively troublesome. Usually, when opening a car door, for safety reasons, it is necessary to observe the surrounding situation before opening the door. Therefore, a large resistance is required when opening the door to allow the person getting out of the car enough time to observe the surrounding environment. When the door is opened to a certain angle, the resistance decreases and the door is opened more easily. However, there is no such hinge in the existing technology. Therefore, there is an urgent need for a car door hinge assembly that can solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the above problems by providing an improved automotive door hinge assembly with the advantage of segmented resistance when the door is opened.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an improved automotive door hinge assembly, comprising a fixed hinge, a hinge flap, an elastic element, and a pivot. The fixed hinge has a connecting seat, the hinge flap has a connecting arm, and the pivot is located at the connection between the connecting arm and the connecting seat. The fixed hinge has a limiting element that restricts the rotation angle of the hinge flap, the limiting element including a connecting rod. The connecting seat has an arc-shaped groove that slides with the connecting rod, and the connecting seat has a connecting post. The elastic element includes a connecting sleeve and a sliding rod. One end of the connecting sleeve is rotatably fitted to the outer periphery of the connecting post, and one end of the sliding rod is rotatably fitted to the outer periphery of the connecting rod. The connecting sleeve has a sliding cavity with an open end and a closed end. The closed end has a plurality of damping blocks extending along the length direction of the sliding cavity. A sliding groove is formed between adjacent damping blocks. The end of the sliding rod has a sliding block that is slidably disposed in the sliding cavity. The sliding block has a protrusion that slidably engages with the sliding groove. The sidewall of the protrusion engages with the surface of the damping block. The length of the damping block is less than the length of the sliding cavity.

[0006] Preferably, the sliding block is provided with a mounting groove, and a mounting cylinder is detachably fitted in the mounting groove. The mounting cylinder has an opening and a through hole communicating with the opening. A ball is placed in the opening, and a spring is provided between the ball and the mounting groove. The portion of the ball passing through the through hole is located outside the mounting cylinder.

[0007] Preferably, the sliding cavity has a first cavity and a second cavity, the damping block is disposed in the first cavity, the cross-sectional height of the first cavity is greater than the cross-sectional height of the second cavity, a step is formed between the first cavity and the second cavity, and the ball only contacts and engages with the second cavity.

[0008] Preferably, one end of the connecting sleeve is provided with a first annular sleeve, and one end of the sliding rod is provided with a second annular sleeve. The first annular sleeve is fitted around the outer periphery of the connecting column, and the second annular sleeve is fitted around the outer periphery of the connecting rod.

[0009] Preferably, the connecting column is provided with a first end cap at its end, and the connecting rod is provided with a second end cap at both ends. The first end cap and the second end cap are used to restrict the movement of the first annular sleeve and the second annular sleeve in the axial direction.

[0010] Preferably, an opening cover is fixedly installed at the end of the connecting sleeve away from the first annular sleeve. The opening cover has an annular groove, and a sealing ring is installed in the annular groove. The sealing ring is sleeved on the outer periphery of the sliding rod.

[0011] Preferably, a limiting plate is provided on the outer periphery of the sliding rod, and the limiting plate is in a limiting fit with the connecting sleeve.

[0012] Preferably, the limiting plate has a buffer pad at one end near the connecting sleeve.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model provides an improved automotive door hinge assembly. When the sliding block's protrusion slides into the sliding groove, a larger force is required to cause relative displacement between the sliding block and the damping block due to the tight fit between them. When the sliding block and the damping block disengage, the resistance experienced by the sliding block decreases, resulting in smoother sliding within the sliding cavity. This application achieves a situation where the resistance is higher when the car door is first opened, but decreases as the door opens to a certain angle, thus improving the user experience through segmented damping. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the elastic element of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the elastic element of this utility model;

[0018] Figure 4 for Figure 3 A magnified structural diagram of A in the middle;

[0019] Figure 5 for Figure 3 A magnified structural diagram of B in the diagram;

[0020] Figure 6 This is a cross-sectional three-dimensional structural diagram of the connecting sleeve of this utility model;

[0021] Figure 7 This is a three-dimensional structural diagram of the sliding rod of this utility model;

[0022] Figure 8 This is a cross-sectional structural diagram of the connecting sleeve of this utility model;

[0023] Figure 9 for Figure 6 A magnified structural diagram of C.

[0024] Figure Descriptions: 1. Fixed Page; 11. Connecting Seat; 110. Arc Groove; 12. Connecting Post; 121. First End Cap; 2. Hinge; 21. Connecting Arm; 3. Elastic Element; 31. Connecting Sleeve; 310. Sliding Cavity; 3100. Step; 3101. Slide Groove; 3102. First Cavity; 3103. Second Cavity; 311. First Annular Sleeve; 312. Opening Cap; 32. Sliding Rod; 321. Second Annular Sleeve; 322. Limiting Plate; 323. Buffer Pad; 33. Sliding Block; 331. Protrusion; 330. Mounting Groove; 34. Mounting Cylinder; 35. Ball; 36. Spring; 41. Connecting Rod; 411. Second End Cap; 5. Rotating Shaft; 6. Damping Block; 7. Sealing Ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1-9As shown, an improved automotive door hinge assembly includes a fixed hinge 1, a hinge 2, an elastic element 3, and a pivot 5. The fixed hinge 1 has a connecting seat 11, and the hinge 2 has a connecting arm 21. The pivot 5 is located at the connection between the connecting arm 21 and the connecting seat 11. The fixed hinge 1 has a limiting element that restricts the rotation angle of the hinge 2, the limiting element including a connecting rod 41. The connecting seat 11 has an arc-shaped groove 110 that slides with the connecting rod 41. The arc-shaped groove 110 is concentric with the pivot 5. The connecting seat 11 has a connecting post 12. The elastic element 3 includes a connecting sleeve 31 and a sliding rod 32. One end of the connecting sleeve 31 rotatably engages with the outer periphery of the connecting post 12. One end is rotatably fitted to the outer periphery of the connecting rod 41. The connecting sleeve 31 has a sliding cavity 310, which has an open end and a closed end. The closed end is provided with a plurality of damping blocks 6 extending along the length direction of the sliding cavity 310. A sliding groove 3101 is formed between adjacent damping blocks 6. The end of the sliding rod 32 is provided with a sliding block 33 that is slidably disposed in the sliding cavity 310. The sliding block 33 has a protrusion 331 that slidably engages with the sliding groove 3101. The sidewall of the protrusion 331 engages with the surface of the damping block 6. The length of the damping block 6 is less than the length of the sliding cavity 310. Therefore, when the protrusion 331 engages with the damping block 6, a large force is required to cause relative displacement between the sliding block 33 and the damping block 6.

[0027] In this application, there are two connecting seats 11 and connecting arms 21, which makes the fixed page 1 and the opening and closing page 2 more stable, and the connecting rod 41 is provided through the two arc-shaped grooves 110.

[0028] The sliding block 33 is provided with a mounting groove 330, and a mounting cylinder 34 is detachably fitted in the mounting groove 330. The mounting cylinder 34 has an opening and a through hole communicating with the opening. A ball 35 is placed in the opening, and a spring 36 is provided between the ball 35 and the mounting groove 330. The ball 35 passes through the through hole and is located outside the mounting cylinder 34, so that the ball 35 can roll and cooperate with the inner wall of the sliding cavity 310.

[0029] The sliding cavity 310 has a first cavity 3102 and a second cavity 3103. The damping block 6 is disposed in the first cavity 3102. The cross-sectional height of the first cavity 3102 is greater than the cross-sectional height of the second cavity 3103. A step 3100 is formed between the first cavity 3102 and the second cavity 3103. The ball 35 only contacts and engages with the second cavity 3103. Therefore, when the sliding block 33 moves from the first cavity 3102 to the second cavity 3103, the ball 35 in the protrusion 331 engages with the second cavity 3103. The inner wall rolls together, making the sliding block 33 slide more smoothly in the second cavity 3103 with less force required. In this application, the length of the second cavity 3103 is twice the length of the first cavity 3102. That is, if the car door can be opened to 90°, when the opening angle of the car door exceeds 30°, the sliding block 33 can move from the first cavity 3102 to the second cavity 3103. Therefore, the resistance is greater when the opening angle of the car door is less than 30°, and the resistance is less when the opening angle of the car door is greater than 30°, and the sliding friction is changed to rolling friction.

[0030] One end of the connecting sleeve 31 is provided with a first annular sleeve 311, and one end of the sliding rod 32 is provided with a second annular sleeve 321. The first annular sleeve 311 is sleeved on the outer periphery of the connecting post 12, and the second annular sleeve 321 is sleeved on the outer periphery of the connecting rod 41.

[0031] The connecting column 12 is provided with a first end cap 121 at its end, and the connecting rod 41 is provided with a second end cap 411 at both ends. The first end cap 121 and the second end cap 411 are used to restrict the movement of the first annular sleeve 311 and the second annular sleeve 321 in the axial direction.

[0032] An opening cover 312 is fixedly installed at the end of the connecting sleeve 31 away from the first annular sleeve 311. The sliding rod 32 is slidably engaged with the opening cover 312. An annular groove is provided in the opening cover 312. A sealing ring 7 is installed in the annular groove. The sealing ring 7 is sleeved on the outer periphery of the sliding rod 32 to prevent dust from entering the sliding cavity 310.

[0033] A limiting plate 322 is provided on the outer periphery of the sliding rod 32. The limiting plate 322 is in a limiting cooperation with the connecting sleeve 31, so that the maximum movement distance of the sliding rod 32 can be limited by the limiting plate 322 and the sliding block 33. A buffer pad 323 is provided at the end of the limiting plate 322 near the connecting sleeve 31, so that the limiting plate 322 and the connecting sleeve 31 can make soft contact, prevent damage, and increase service life.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A car door hinge assembly with an improved structure, comprising a fixed hinge (1), a hinge (2), an elastic element (3), and a pivot (5), wherein the fixed hinge (1) is provided with a connecting seat (11), the hinge (2) is provided with a connecting arm (21), the pivot (5) is disposed at the connection between the connecting arm (21) and the connecting seat (11), the fixed hinge (1) is provided with a limiting element that can limit the rotation angle of the hinge (2), the limiting element includes a connecting rod (41), and the connecting seat (11) is provided with an arc-shaped groove (110) that slides with the connecting rod (41), characterized in that: The connecting seat (11) is provided with a connecting post (12). The elastic element (3) includes a connecting sleeve (31) and a sliding rod (32). One end of the connecting sleeve (31) is rotatably fitted to the outer periphery of the connecting post (12), and one end of the sliding rod (32) is rotatably fitted to the outer periphery of the connecting rod (41). The connecting sleeve (31) has a sliding cavity (310) inside. The sliding cavity (310) has an open end and a closed end. The closed end is provided with a plurality of grooves along the sliding cavity (31). 0) A damping block (6) extending in the length direction, with a groove (3101) formed between adjacent damping blocks (6), and a sliding block (33) slidably disposed in the sliding cavity (310) at the end of the sliding rod (32). The sliding block (33) has a protrusion (331) that slides with the groove (3101), and the side wall of the protrusion (331) is in contact with the surface of the damping block (6). The length of the damping block (6) is less than the length of the sliding cavity (310).

2. The automotive door hinge assembly with an improved structure according to claim 1, characterized in that: The sliding block (33) is provided with an installation groove (330), and an installation cylinder (34) is detachably fitted in the installation groove (330). The installation cylinder (34) has an opening, and the installation cylinder (34) is also provided with a through hole communicating with the opening. A ball (35) is placed in the opening. A spring (36) is provided between the ball (35) and the installation groove (330). The ball (35) passes through the through hole and is located outside the installation cylinder (34).

3. The automotive door hinge assembly with an improved structure according to claim 2, characterized in that: The sliding cavity (310) has a first cavity (3102) and a second cavity (3103). The damping block (6) is disposed in the first cavity (3102). The cross-sectional height of the first cavity (3102) is greater than the cross-sectional height of the second cavity (3103). A step (3100) is formed between the first cavity (3102) and the second cavity (3103). The ball (35) only contacts and engages with the second cavity (3103).

4. The automotive door hinge assembly with an improved structure according to claim 1, characterized in that: The connecting sleeve (31) has a first annular sleeve (311) at one end and a second annular sleeve (321) at one end of the sliding rod (32). The first annular sleeve (311) is fitted around the outer periphery of the connecting post (12) and the second annular sleeve (321) is fitted around the outer periphery of the connecting rod (41).

5. The automotive door hinge assembly with an improved structure according to claim 4, characterized in that: The connecting column (12) is provided with a first end cap (121) at its end, and the connecting rod (41) is provided with a second end cap (411) at both ends. The first end cap (121) and the second end cap (411) are used to restrict the movement of the first annular sleeve (311) and the second annular sleeve (321) in the axial direction.

6. The automotive door hinge assembly with an improved structure according to claim 4, characterized in that: An opening cover (312) is fixedly installed at one end of the connecting sleeve (31) away from the first annular sleeve (311). An annular groove is provided in the opening cover (312), and a sealing ring (7) is installed in the annular groove. The sealing ring (7) is sleeved on the outer periphery of the sliding rod (32).

7. The automotive door hinge assembly with an improved structure according to claim 1, characterized in that: The sliding rod (32) is provided with a limiting plate (322) on its outer periphery, and the limiting plate (322) is in a limiting fit with the connecting sleeve (31).

8. A car door hinge assembly with an improved structure according to claim 7, characterized in that: The limiting plate (322) has a buffer pad (323) at one end near the connecting sleeve (31).

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