CN214661954U

CN214661954U - Gear pin assembly for electronic gear shifter

Info

Publication number: CN214661954U
Application number: CN202120434037.0U
Authority: CN
Inventors: 李小兵; 鲁进; 程健; 卢新田
Original assignee: Nanjing Aolian Ae & Ea Co ltd
Current assignee: Nanjing Aolian Ae & Ea Co ltd
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-11-09
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses a keep off position round pin subassembly for electron selector, including reset spring, opening grommet and keep off position round pin body, keep off position round pin body and be the ladder cylindricality that big both ends are little in the middle of, the external diameter of big cylinder portion and the inner chamber diameter adaptation of gear level, big cylinder portion adopts circular cone portion transitional coupling with upper end small circle post portion, the free end of upper end small circle post portion sets up to the flexible claw portion, the free end of lower extreme small circle post portion sets up to spherical head; the opening bushing ring is sleeved on the conical part of the gear pin and used for compensating a free gap between the gear pin and the gear shift lever; the reset spring is sleeved at the upper end of the opening bushing ring and used for elastically supporting the gear pin to stretch in the inner cavity of the gear shift lever. The utility model discloses can reduce gear level and keep off free clearance and friction between the position round pin, alleviate the noise of the operation of shifting, promote smooth-going sense and the comfort level of the operation of shifting.

Description

Gear pin assembly for electronic gear shifter

Technical Field

The utility model relates to an automobile gear shifter technical field, concretely relates to keep off position round pin subassembly for electron selector.

Background

Along with the rapid development of network technology, the intelligent driving technology is more and more mature, the conventional gear shifter has large volume, heavy weight and few safe integrated modules, so that the requirements of light weight and intelligent development of the whole vehicle cannot be met, and the electronic gear shifter becomes the first choice of various current domestic and foreign automobile manufacturers.

The shift pin is an important part of the electronic shifter, and the structure and the use performance of the shift pin directly influence the safety and the comfort of the shifting operation. The shift pin of the existing electronic gear shifter is generally slidably mounted in an inner cavity of a shift lever through a return spring, and the head of the shift pin slides from one tooth form to another tooth form under the action of the spring force during the gear shifting operation, so that gear shifting of different gears is realized.

The free clearance of current gear pin and gear level is great, and the driver can obviously feel beating and the jamming of keeping off the position at the in-process of shifting gears, influences the comfort that whole car drove.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a keep off position round pin subassembly for electron selector.

The utility model adopts the technical proposal that:

a gear pin assembly for an electronic gear shifter comprises a return spring, an opening bushing ring and a gear pin body, wherein the gear pin body is in a stepped cylindrical shape with a large middle part and small two ends, the outer diameter of the large middle cylindrical part is matched with the diameter of an inner cavity of a gear shifting rod, the large cylindrical part is in transition connection with the small cylindrical part at the upper end by adopting a conical part, the free end of the small cylindrical part at the upper end is provided with a deformable claw part, and the free end of the small cylindrical part at the lower end is provided with a spherical head part; the opening bushing ring is sleeved on the conical part of the gear pin and used for compensating a free gap between the gear pin and the gear shift lever; the reset spring is sleeved at the upper end of the opening bushing ring and used for elastically supporting the gear pin to stretch in the inner cavity of the gear shifting lever and expand and contract the opening bushing ring.

Furthermore, the deformable claw part is formed by the side surface of the end part and the opening of the central part of the small cylindrical part at the upper end of the gear pin body, and a deformable claw part is formed between the two adjacent side surface openings.

Furthermore, the deformable claw parts are arranged in 2-5 numbers.

Further, the outer wall of the deformable claw portion is provided with a projection.

Furthermore, the side surface of the opening bushing ring is provided with a side opening in a penetrating mode, the center of the opening bushing ring is provided with a stepped through hole, a large hole of the stepped through hole is a conical hole, the taper of the conical hole is slightly larger than that of the conical part of the gear pin, a small hole of the stepped through hole is a cylindrical hole, and the diameter of the cylindrical hole is larger than the outer diameter of the small cylindrical part at the upper end of the gear pin.

Furthermore, an arc-shaped stop block is arranged at the upper end of the inner side wall of the cylindrical hole of the opening lining ring, and the arc surface of the stop block is connected with the outer peripheral surface of the small cylindrical part at the upper end of the stop pin.

Furthermore, the reset spring is a cylindrical spiral compression spring, the diameter of the outer circle of the cylindrical spiral compression spring is matched with the aperture of a large round hole in the inner cavity of the gear shifting rod, and the diameter of the inner circle of the cylindrical spiral compression spring is matched with the outer diameter of a small round column part at the upper end of the gear shifting pin body.

The utility model has the advantages that: the structural design of the tail of the gear pin can effectively reduce the assembly clearance and friction between the gear pin body and the gear lever, reduce the noise during gear shifting operation and improve the gear shifting safety of the whole vehicle. Due to the design of the lining ring of the opening of the body, on one hand, the gear pin body can generate elastic deformation so as to reduce the free gap between the gear pin body and the gear shifting lever, on the other hand, the service life of the gear pin body can be prolonged by replacing the lining ring of the opening, and the maintenance frequency of the electronic gear shifter is reduced. The design of keeping off position round pin body bulb structure makes and keeps off position round pin body and tooth groove spherical surface contact, effectively reduces the jumping nature that the process of shifting appears, reduces the noise that the in-process of shifting produced, guarantees the travelling comfort of shifting.

Drawings

Fig. 1 is a schematic view of an installation structure of the gear pin assembly of the present invention.

Fig. 2 is an exploded view of the shift pin assembly of the present invention.

Fig. 3 is a schematic structural diagram of the gear pin body of the present invention.

Fig. 4 is a schematic structural view of the split bushing ring of the present invention.

Detailed Description

For a better understanding of the present invention, the following examples are provided to further illustrate the present invention, but the present invention is not limited to the following examples.

Referring to fig. 1 to 4, the present embodiment provides a shift pin assembly for an electronic shifter, which includes a return spring 9, a split bushing 10 and a shift pin body 11.

The gear pin body 11 is in a stepped cylindrical shape with a large middle and two small ends, the outer diameter of the middle large cylindrical part 111 is matched with the diameter of an inner cavity of the gear shift lever 1, the large cylindrical part 111 and the upper small cylindrical part are in transition connection through a conical part 112, the diameter of the large end of the conical part 112 is smaller than the outer diameter of the cylindrical part 111, and an annular surface 115 is formed at the joint of the cylindrical part and the conical part 112. The upper small cylindrical part is the tail part of the gear pin body, the lower small cylindrical part is the head part of the gear pin body, and the bottom of the head part is a spherical structure 114. The tail end of a small cylindrical part at the upper end of the gear pin body is provided with a deformable claw part 113, the deformable claw part is formed by cutting a small cylindrical end, for example, a round blind hole is formed in the axial center part of the end face of the small cylindrical end, a plurality of side openings are uniformly formed in the side wall of the round blind hole, one deformable claw part is formed between the two side openings, and in the implementation, four deformable claw parts are arranged. The outer wall of the deformable claw 113 is provided with a projection 1131.

The side surface of the opening bushing ring 10 is provided with side openings 103 penetrating through the top and the bottom of the opening bushing ring, the central part of the opening bushing ring is provided with a step through hole, a large hole is a conical hole 101, the hole depth of the large hole is matched with the length of the conical part 112 of the gear pin, the taper of the conical hole 101 is slightly larger than that of the conical part 112 of the gear pin, a small hole is a cylindrical hole 102, the lower end of the cylindrical hole 102 is connected with the conical hole 101, the diameter of the cylindrical hole 102 is larger than the outer diameter of the small cylindrical part at the upper end of the gear pin, namely, a gap is arranged between the cylindrical hole wall of the opening bushing ring and the outer wall of the gear pin during installation, and the design can enable the wall thickness of the opening bushing ring to be reduced, and the deformation amount of the opening bushing ring is improved. In order to increase the supporting area of the return spring, three arc-shaped stoppers 104 are arranged at the upper end of the inner side wall of the cylindrical hole 102 of the open backing ring, and the arc-shaped stoppers 104 are formed by radially inwards protruding the inner side wall of the cylindrical hole. In order to reduce the contact area and facilitate installation, a through groove 105 is axially arranged on the inner side wall of the cylindrical hole 102 between two adjacent pressing blocks. The diameter of the outer circumferential surface of the opening bushing 10 is adapted to the diameter of the inner cavity of the gear shift lever 1. Preferably, the split collar is made of POM plastic.

The preferred reset spring 9 is a cylindrical helical compression spring, the diameter of the outer circle of the cylindrical helical compression spring is matched with the aperture of a large round hole in the inner cavity of the gear shifting rod, and the diameter of the inner circle of the cylindrical helical compression spring is matched with the outer diameter of a small round column part at the upper end of the gear pin body 11.

When the retainer pin is installed, the opening lining ring 10 is sleeved on the conical part 112 of the retainer pin body, then the upper end of the opening lining ring is sleeved with the return spring 9, and the lower end of the return spring 9 abuts against the upper end face of the opening lining ring 10; inserting the assembled gear pin assembly into an inner cavity of the gear shift lever, inserting the tail of the gear pin into a small cylindrical hole of an inner cavity of the gear shift lever, and contacting a protrusion 1131 of a deformable claw part at the tail of the gear pin with the hole wall of the small cylindrical hole of the gear shift lever; the upper end of the reset spring 9 abuts against a blocking shoulder at the joint of a small cylindrical hole and a large cylindrical hole of the inner cavity of the gear shifting lever, and the lower end of the reset spring 9 abuts against the upper end face of the opening bushing ring 10; the ball formation 114 of the shift pin head extends from the bottom of the shift lever into sliding contact with the shift tooth slot of the lower housing.

During gear shifting operation, the gear pin body 11 makes telescopic motion in the inner cavity of the gear shift lever under the action of spring force, the opening bushing ring 10 generates elastic deformation when being extruded by the spring, and the side opening 103 is opened, so that the free gap between the gear pin and the gear shift lever is effectively compensated; the deformable claw part 113 and the protrusion 1131 on the surface of the deformable claw part are extruded and deformed, so that the assembly clearance and friction between the gear pin body and the gear shift lever are effectively reduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A gear pin assembly for an electronic gear shifter is characterized by comprising a return spring, an opening bushing ring and a gear pin body, wherein the gear pin body is in a stepped cylindrical shape with a large middle and two small ends, the outer diameter of a large middle cylindrical part is matched with the diameter of an inner cavity of a gear shifting rod, the large cylindrical part is in transition connection with a small upper end cylindrical part through a conical part, the free end of the small upper end cylindrical part is provided with a deformable claw part, and the free end of the small lower end cylindrical part is provided with a spherical head part; the opening bushing ring is sleeved on the conical part of the gear pin and used for compensating a free gap between the gear pin and the gear shift lever; the reset spring is sleeved at the upper end of the opening bushing ring and used for elastically supporting the gear pin to stretch in the inner cavity of the gear shifting lever and expand and contract the opening bushing ring.

2. The shift pin assembly of claim 1, wherein the deformable claw portion is formed by an opening in the end and a central portion of the upper cylindrical portion of the shift pin body, and a deformable claw portion is formed between two adjacent openings in the side surfaces.

3. The shift pin assembly of claim 2, wherein 2 to 5 deformable claw portions are provided.

4. A dowel assembly according to claim 2 or 3, characterised in that the outer wall of the deformable jaw portion is provided with projections.

5. The gear pin assembly according to claim 1, characterized in that the side of the split collar has a side opening therethrough, the central portion has a stepped through hole, the large hole of the stepped through hole is a conical hole having a taper slightly greater than the taper of the conical portion of the gear pin, the small hole of the stepped through hole is a cylindrical hole having a diameter greater than the outer diameter of the small cylindrical portion at the upper end of the gear pin.

6. The shift pin assembly of claim 5, wherein the upper end of the inner sidewall of the cylindrical bore of the split collar defines an arcuate stop, the arcuate surface of the stop being connected to the outer peripheral surface of the upper cylindrical portion of the shift pin.

7. The shift pin assembly of claim 1, wherein the return spring is a cylindrical helical compression spring, an outer diameter of the cylindrical helical compression spring is matched with an aperture of a large round hole in an inner cavity of the shift lever, and an inner diameter of the cylindrical helical compression spring is matched with an outer diameter of a small round pillar portion at an upper end of the shift pin body.