CN217054765U - Connection structure of gear bracket and hinge pin in multi-gear vehicle door hinge - Google Patents

Abstract

The utility model provides a connection structure of gear bracket and hinge pin in multi-gear door hinge belongs to mechanical technical field. The coupling structure comprises a regular-polygon-shaped coupling hole arranged on a gear bracket and a coupling head arranged at one end of a hinge shaft and matched with the coupling hole in shape, wherein an interference convex ring is arranged on the hole wall in the coupling hole, the shape of the inner hole of the interference convex ring is the same as that of the coupling hole, the wall of each side hole of the coupling hole is in one-to-one correspondence and parallel to the hole wall of the interference convex ring, the coupling head is inserted into the coupling hole and penetrates through the interference convex ring, the coupling head is in clearance fit with the coupling hole and is in interference fit with the interference convex ring, and a plurality of notches are distributed on the inner wall of the interference convex ring along the circumferential direction. The assembling method has the advantages of high assembling efficiency, high qualification rate, low assembling difficulty, high connecting strength and the like.

Description

Connection structure of gear bracket and hinge pin in multi-gear vehicle door hinge

Technical Field

The utility model belongs to the technical field of auto-parts, a multi-gear door hinge is related to, especially relate to the connection structure of gear bracket and hinge pin in the multi-gear door hinge.

Background

The door hinge is an important part for connecting the door to the door pillar, and enables the door to be opened or closed with respect to the vehicle body. The traditional vehicle door hinge is simple in structure and does not have the functions of controlling and limiting the opening of the vehicle door, and the phenomena of damage, abnormal sound and the like caused by excessive opening of the vehicle door due to improper force control are easy to occur. For this reason, multi-position door hinges have been introduced in the market to overcome the above problems, and have begun to be widely used in some higher-grade vehicles. As shown in fig. 1, the multi-gear vehicle door hinge includes a hinge seat 1 and a hinge seat 2 (the hinge seat 1 is fixed on a vehicle door upright post when in use, and the hinge seat 2 is fixed on a vehicle door), the hinge seat 2 is fixed with the hinge shaft 3, one end of the hinge shaft 3 is fixed with a gear bracket 4, the edge of the gear bracket 4 is connected with a plurality of rollers 5 capable of rotating, a limit notch is formed between two adjacent rollers 5, the rotating centers of the rollers 5 are located on the same circumference, the hinge seat 1 is provided with a torsion spring 6, when the hinge seat 2 swings relative to the hinge seat 1 to open the vehicle door outwards, each roller 5 can roll along the torsion spring 6 and one end of the torsion spring 6 is clamped into one of the limit notches, so that the vehicle door can be positioned at a certain opening angle, and multi-gear opening of the vehicle door is realized.

Wherein, gear bracket 4 and hinge axis 3 are fixed mutually through interference fit. Specifically, as shown in fig. 2, the shift position bracket 4 includes a first connecting piece 4a and a second connecting piece 4b, each roller 5 is disposed between the first connecting piece 4a and the second connecting piece 4b, one end of the hinge shaft 3 has a hexagonal coupling head 3a, a coupling hole 4a1 is formed through the first connecting piece 4a, the coupling head 3a is squeezed into the coupling hole 4a1 to form an interference fit, and the second connecting piece 4b is sleeved on the coupling head 3 a. Wherein, the coupling holes 4a1 are directly formed by punching, the positions of the coupling holes 4a1 and the coupling heads 3a are continuously corrected before assembly to achieve alignment, and in the actual assembly process, the interference of the coupling holes 4a1 is required to be set to be large if the hinge shaft 3 and the gear position bracket 4 are connected firmly, however, the force required for assembly is large, and the coupling holes are difficult to be disassembled after being pressed in, so that the two parts are scrapped once the initial installation angle is not correct; if the assembly is convenient, the interference magnitude needs to be reduced, if the interference magnitude is small, the local stress is large during the interference fit, so that the material is easily extruded out in a large quantity, the interference state cannot be kept stable, namely, the connection strength cannot be ensured, and if the vehicle runs on a severely bumpy road, the vibration of the whole vehicle door hinge can be caused, and the gear bracket 4 and the hinge shaft 3 can be loosened by combining various factors.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem that prior art exists, has provided a connection structure of gear bracket and hinge pin in multi-gear door hinge, problem that joint strength is low when having solved the reduction assembly degree of difficulty.

The purpose of the utility model can be realized by the following technical proposal:

a connection structure of a gear bracket and a hinge shaft in a multi-gear vehicle door hinge comprises a regular polygonal connecting hole arranged on the gear bracket and a connecting head arranged at one end of the hinge shaft and matched with the connecting hole in shape.

When the connecting structure is assembled, the connecting head of the hinge shaft is inserted into the connecting hole, and the shape of the inner hole of the interference convex ring is the same as that of the connecting hole, and the hole wall of each side of the connecting hole is in one-to-one correspondence and parallel to the hole wall of the interference convex ring, so that the external shape of the connecting head can be directly aligned with the inner hole of the interference convex ring after the connecting head is inserted into the connecting hole. Then, only the acting force is applied to the hinge shaft to extrude the coupling head into the inner hole of the interference convex ring to form interference fit.

In the connecting structure of the gear bracket and the hinge shaft, the interference convex ring is used for replacing a connecting hole to be in interference fit with the connecting head, and the connecting hole only plays a role in aligning the external shape of the connecting head and an inner hole of the interference convex ring before the interference fit, so that the die matching time is saved, the product yield is greatly improved, the error rate in the interference fit is reduced, the position accuracy of the connecting head and the inner hole of the interference convex ring in the press fitting can be further ensured, the material is not extruded due to dislocation, and the interference state is favorably maintained. Meanwhile, the inner wall of the interference convex ring is provided with the plurality of notches along the circumferential direction, so that materials can be more reasonably and uniformly distributed when the interference convex ring is extruded, the local stress concentration is reduced, and the local material deformation is counteracted.

In the connecting structure of the middle gear bracket and the hinge shaft of the multi-gear vehicle door hinge, the length of the interference convex ring is 1/2-2/3 of the length of the connecting hole.

Through the arrangement, the connection head and the gear bracket are ensured to have enough interference fit length so as to ensure the connection firmness. Meanwhile, the length in the connecting hole can be ensured to be enough to guide the connecting head before the interference fit with the interference convex ring, and the assembling precision is ensured.

In the above-mentioned connection structure of the multi-gear vehicle door hinge intermediate gear bracket and the hinge axis, the gear bracket includes a first connection piece, the connection hole is provided on the first connection piece, the interference convex ring is formed by stamping from the position of the orifice at one end of the connection hole towards the direction of the orifice at the other end, and the connection head is inserted from the orifice at the end of the connection hole which is not stamped.

During production, the first connecting sheet is first punched with the punch to form the connecting hole. Then, the connecting hole is placed on a corresponding die, and a punch with a size slightly larger than that of the connecting hole is used for punching from the hole opening at one end of the connecting hole to the hole opening at the other end of the connecting hole, so that an interference convex ring is formed on the inner wall of the connecting hole. In this punching process, the angle of the punch is ensured to be aligned with the angle of the connecting hole, namely, the vertex positions of the corners are corresponding, so that the inner hole wall of the interference convex ring is naturally parallel to the inner hole wall of the connecting hole. The forming mode has the advantages that the processing technology is simpler and the efficiency is higher for the connecting sheet-shaped structure.

In the connection structure of the gear bracket and the hinge shaft in the multi-gear vehicle door hinge, each notch penetrates through two side surfaces of the interference convex ring, and each notch is formed on the interference convex ring in one step in a stamping mode.

After the interference convex ring is formed in a stamping mode, the interference convex ring is directly stamped by using a corresponding punch to form a notch penetrating through two side faces of the interference convex ring, and the connecting strength of the coupling head and the interference convex ring is improved while the assembling efficiency is improved.

In the connection structure of the gear bracket and the hinge shaft in the multi-gear vehicle door hinge, the gear bracket further comprises a second connecting sheet, a plurality of rollers are arranged between the first connecting sheet and the second connecting sheet, pin shafts penetrate through the rollers, a first hole site corresponding to each pin shaft is arranged on the first connecting sheet, a second hole site corresponding to each pin shaft is arranged on the second connecting sheet, an orifice at one end of each connecting hole, which is punched to form an interference convex ring, is arranged on one side surface of the first connecting sheet, which faces the second connecting sheet, a concave groove formed after the interference convex ring is punched is formed in one side surface of the first connecting sheet, a boss which is fixed in the circumferential direction and is formed in the concave groove is embedded in one side surface of the second connecting sheet, a through hole penetrating through the boss is arranged on the second connecting sheet, and the connecting head penetrates through the through hole and is in clearance fit with the connecting sheet.

When the interference convex ring is formed by punching from the position of the port at one end of the connecting hole, a concave groove is formed on the surface of the port at the end of the connecting hole. A boss is arranged on one side face, facing the first connecting piece, of the second connecting piece, the concave groove formed in the first connecting piece due to the interference convex ring formed in a stamping mode is matched with the boss, the boss is embedded into the concave groove to form circumferential fixation when the gear bracket is assembled, so that the angle between the first connecting piece and the second connecting piece can be located, and the first hole position in the first connecting piece and the second hole position in the second connecting piece are not staggered. In this way, the structure generated by the arrangement of the interference convex ring is reasonably utilized while the assembly efficiency of the bracket is improved.

Compared with the prior art, this connection structure of shelves bracket and hinge pin in multi-gear door hinge has following advantage:

1. the interference convex ring is used for replacing a coupling hole to be in interference fit with the coupling head, and the coupling hole only plays a role in aligning the external shape of the coupling head and the inner hole of the interference convex ring before the interference fit, so that the mold matching time is omitted, the error rate in the interference fit is reduced, and the product percent of pass is greatly improved;

2. the inner wall of the interference convex ring is provided with a plurality of notches along the circumferential direction, the notches enable materials to be uniformly distributed more reasonably when the interference convex ring is extruded, local stress concentration is reduced, local material deformation is counteracted, therefore, the connecting structure can reduce assembly difficulty by reducing interference magnitude of the interference convex ring, and meanwhile, the effect of the notches can be utilized to ensure the connection strength between the coupling head and the interference convex ring when the interference magnitude of the interference convex ring is reduced.

Drawings

FIG. 1 is a schematic view of a prior art door hinge.

Fig. 2 is an exploded view of a prior art hinge shaft and gear bracket.

FIG. 3 is a schematic view of the connection structure of the gear bracket and the hinge shaft in the multi-gear door hinge.

Fig. 4 is a sectional view of a coupling structure of a gear bracket and a hinge shaft in the present multi-gear door hinge.

Fig. 5 is an enlarged view of a point a in fig. 4.

FIG. 6 is a cross sectional view of the multi-position door hinge with the coupling head and the interference collar.

FIG. 7 is an exploded sectional view of the first connecting piece and the second connecting piece in the connecting structure of the gear bracket and the hinge shaft of the multi-gear vehicle door hinge.

FIG. 8 is a schematic view of a first connecting piece in the connecting structure of the gear bracket and the hinge shaft in the multi-gear door hinge.

FIG. 9 is another perspective view of a first connecting piece in the connecting structure of the gear bracket and the hinge shaft in the multi-gear door hinge.

In the figure, 1, a hinge seat I; 2. a second hinge seat; 3. a hinge axis; 3a, a coupling head; 4. a gear bracket; 4a, connecting a sheet I; 4a1, coupling holes; 4a2, interference convex ring; 4a3, notch; 4a4, recessed groove; 4b, connecting sheet II; 4b1, boss; 4b2, through holes; 5. a roller; 6. a torsion spring; 7. and (7) a pin shaft.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

A connecting structure of a gear bracket and a hinge shaft in a multi-gear vehicle door hinge is characterized in that as shown in figure 3, the gear bracket 4 comprises a first connecting sheet 4a and a second connecting sheet 4b, a plurality of rotatable rollers 5 are arranged between the first connecting sheet 4a and the second connecting sheet 4b, pin shafts 7 are arranged in the rollers 5 in a penetrating mode, first hole positions corresponding to the pin shafts 7 are arranged on the first connecting sheet 4a, and second hole positions corresponding to the pin shafts 7 are arranged on the second connecting sheet 4 b. During assembly, one end of each pin shaft 7 is fixed at the first hole position, the roller 5 is sleeved on the corresponding pin shaft 7, the other end of each pin shaft 7 penetrates through the corresponding second hole position on the second connecting piece 4b and is riveted to form a flange (not shown in the figure), and thus the first connecting piece 4a, the second connecting piece 4b and each roller 5 form the gear bracket 4.

As shown in fig. 3 and 4, the connecting structure of the gear bracket and the hinge shaft includes a regular polygonal connecting hole 4a1 formed on the connecting piece 4a and a connecting head 3a formed at one end of the hinge shaft 3 and having a shape matching with the connecting hole 4a 1. As shown in fig. 3 to 9, the inner wall of the coupling hole 4a1 has an interference convex ring 4a2, the shape of the inner hole of the interference convex ring 4a2 is the same as that of the coupling hole 4a1, the inner wall of each side of the coupling hole 4a1 corresponds to and is parallel to the hole wall of the interference convex ring 4a2, the inner hole wall of the interference convex ring 4a2 is parallel to the inner hole wall of the coupling hole 4a1, the coupling head 3a is in clearance fit with the coupling hole 4a1, and the coupling head 3a is inserted into the coupling hole 4a1 and is in interference fit with the interference convex ring 4a 2. Wherein, the length of the interference convex ring 4a2 is 1/2-2/3 of the length of the coupling hole 4a 1.

Specifically, as shown in fig. 7, 8 and 9, the coupling hole 4a1 is specifically a hexagonal hole, the interference convex ring 4a2 is formed by punching from the position of the hole at one end of the coupling hole 4a1 toward the hole at the other end, the hole at one end of the coupling hole 4a1, which is punched to form the interference convex ring 4a2, is provided on the side of the connecting piece one 4a facing the connecting piece 4b, and the side of the connecting piece one 4a1 facing the connecting piece two 4b is provided with a concave groove 4a4 formed by punching the interference convex ring 4a 2. In production, the first connecting piece 4a is directly punched with a hexagonal punch to form the connecting hole 4a 1. Then, the coupling hole 4a1 is simply placed on a corresponding die and punched from one end opening of the coupling hole 4a1 toward the other end opening thereof by a hexagonal punch having a size slightly larger than that of the coupling hole 4a1, so that a solid portion of the coupling hole 4a1 at the punched end opening is pressed inward, thereby forming an interference convex ring 4a2 on the inner wall of the coupling hole 4a 1. In this punching operation, the angle of the hexagonal punch is aligned with the angle of the coupling hole 4a1, that is, the respective vertex positions of the hexagonal punch are aligned with each other, so that the inner hole wall of the interference protrusion ring 4a2 is formed to be parallel to the inner hole wall of the coupling hole 4a 1.

After the gear bracket 4 is installed, the gear bracket 4 is fixed with the hinge shaft 3. During assembly, the coupling head 3a of the hinge shaft 3 is inserted into the coupling hole 4a1, and since the shape of the inner hole of the interference convex ring 4a2 is the same as that of the coupling hole 4a1 and the inner hole wall of the interference convex ring 4a2 is parallel to that of the coupling hole 4a1, the external shape of the coupling head 3a can be directly aligned with the inner hole of the interference convex ring 4a2 after the coupling head is inserted into the coupling hole 4a1, that is, the external hexagonal angle of the coupling head 3a is aligned with the internal hexagonal angle of the interference convex ring 4a 2. Then, it is sufficient to press the coupling head 3a into the inner hole of the interference protrusion ring 4a2 by applying a force to the hinge shaft 3 to form an interference fit.

Further, as shown in fig. 3, 6, 8 and 9, a plurality of notches 4a3 are circumferentially distributed on the inner wall of the interference convex ring 4a2, and in this embodiment, a notch 4a3 is provided on each inner wall of the inner hole of the interference convex ring 4a 2. Each notch 4a3 penetrates through both side surfaces of the interference convex ring 4a2, and each notch 4a3 is formed on the interference convex ring 4a2 at one time by a punching method. After the interference convex ring 4a2 is formed by punching, the interference convex ring 4a2 is directly punched by a corresponding punch to form a notch 4a3 penetrating through two side faces of the interference convex ring 4a 2. Because the inner wall of the interference convex ring 4a2 is provided with the plurality of notches 4a3 along the circumferential direction, when the coupling head 3a is extruded through the inner hole of the interference convex ring 4a2, the notches 4a3 enable the materials to be more reasonably and uniformly distributed when the interference convex ring 4a2 is extruded, so that local stress concentration is reduced, namely local material deformation is counteracted, therefore, the connecting structure can reduce the assembly difficulty by reducing the interference of the interference convex ring 4a2, and meanwhile, the effect of the notches 4a3 can ensure the excessive connection strength between the coupling head 3a and the interference convex ring 4a2 when the interference of the interference convex ring 4a2 is reduced.

In this embodiment, as shown in fig. 4, 5 and 7, a side surface of the connecting piece two 4b facing the connecting piece one 4a is provided with a boss 4b1, the shape of the boss 4b1 is the same as that of the recessed groove 4a4, in this embodiment, the boss 4b1 is hexagonal, and the boss 4b1 is embedded into the recessed groove 4a4 to circumferentially fix the connecting piece one 4a and the connecting piece two 4b, so that the first hole on the connecting piece one 4a and the second hole on the connecting piece two 4b can be ensured to be staggered when the gear bracket 4 is assembled. The second connecting piece 4b is provided with a through hole 4b2 penetrating through the boss 4b1, the shape of the through hole 4b2 is the same as the cross section shape of the coupling head 3a, and the coupling head 3a penetrates through the through hole 4b2 and is in clearance fit with the through hole.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (5)

1. A connecting structure of a gear bracket and a hinge shaft in a multi-gear vehicle door hinge comprises a regular polygonal connecting hole (4a1) arranged on the gear bracket (4) and a connecting head (3a) arranged at one end of the hinge shaft (3) and matched with the connecting hole (4a1) in shape, the coupling hole is characterized in that an interference convex ring (4a2) is arranged on the inner hole wall of the coupling hole (4a1), the shape of the inner hole of the interference convex ring (4a2) is the same as that of the coupling hole (4a1), the hole wall of each side of the coupling hole (4a1) is in one-to-one correspondence and parallel to the hole wall of the interference convex ring (4a2), a coupling head (3a) is inserted into the coupling hole (4a1) and penetrates through the interference convex ring (4a2), the coupling head (3a) is in clearance fit with the coupling hole (4a1), the coupling head (3a) is in interference fit with the interference convex ring (4a2), and a plurality of notches (4a3) are circumferentially distributed on the inner wall of the interference convex ring (4a 2).

2. The connecting structure of the middle gear bracket and the hinge shaft of the multi-gear door hinge according to claim 1, characterized in that the length of the interference convex ring (4a2) is 1/2-2/3 of the length of the connecting hole (4a 1).

3. The connecting structure of a gear bracket and a hinge shaft in a multi-gear vehicle door hinge according to claim 2, characterized in that the gear bracket (4) comprises a first connecting piece (4a), a connecting hole (4a1) is formed in the first connecting piece (4a), an interference convex ring (4a2) is formed by punching from the connecting hole (4a1) at one end opening towards the other end opening, and a connecting head (3a) is inserted from the end opening of the connecting hole (4a1) which is not punched.

4. The connecting structure of a middle gear bracket and a hinge shaft of a multi-gear door hinge according to claim 3, characterized in that each notch (4a3) penetrates through two side faces of the interference convex ring (4a2), and each notch (4a3) is formed on the interference convex ring (4a2) in a one-step mode through stamping.

5. The connecting structure of the gear bracket and the hinge shaft in the multi-gear vehicle door hinge according to claim 3, wherein the gear bracket (4) further comprises a connecting piece II (4b), a plurality of rollers (5) are arranged between the connecting piece I (4a) and the connecting piece II (4b), each roller (5) is internally provided with a pin shaft (7), the connecting piece I (4a) is provided with a hole site I corresponding to each pin shaft (7), the connecting piece II (4b) is provided with a hole site II corresponding to each pin shaft (7), one end of the connecting hole (4a1) is punched to form an interference convex ring (4a2), the hole site is arranged on one side surface of the connecting piece I (4a) facing the connecting piece II (4b), and a concave groove (4a4) formed after the interference convex ring (4a2) is punched is arranged on one side surface of the connecting piece I (4a) facing the connecting piece II (4b), one side surface of the connecting piece II (4b) facing the connecting piece I (4a) is provided with a boss (4b1) embedded into the concave groove (4a4) to form circumferential fixing, a through hole (4b2) penetrating through the boss (4b1) is formed in the connecting piece II (4b), the coupling head (3a) penetrates through the through hole (4b2), and the coupling head and the connecting piece II are in clearance fit.

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