A gear pin assembly for an automotive electronic gear shifter

Abstract

The invention discloses a shift pin assembly for an automotive electronic shifter, comprising a shift outer pin, a shift inner pin, a shift lever, a coil spring and a toothed groove; the shift outer pin is slidably arranged in a large hole of a shift lever step blind hole, and the head of the shift outer pin is in sliding contact with the shift tooth of the toothed groove; the cylindrical coil spring and the shift inner pin are arranged in a cylindrical cavity of the shift outer pin, the upper end of the cylindrical coil spring abuts against the bottom surface of the small hole of the shift lever step blind hole, and the lower end abuts against the shift inner pin, the positioning rib of the shift outer pin is inserted into the through groove of the shift inner pin, and the convex inclined surface of the shift inner pin props the deformable buckle of the shift outer pin outward, so that the deformable buckle is tightly abutted against the inner side wall of the cylindrical cavity. The invention can effectively reduce the assembly gap and friction between the components and improve the safety of the whole vehicle shifting.

Description

Technical Field

[0001] The invention relates to the technical field of electronic automobiles, and in particular to a shift pin assembly for an automobile electronic shifter. Background Art

[0002] With the rapid development of the automobile industry, consumers have higher and higher requirements for automobile comfort and safety. The comfort and safety of the shifter mainly depend on the core shift component of the shifter - the shift pin assembly.

[0003] When the existing gear shifter is in use, when the vehicle is not started, the driver can clearly feel the shaking and friction sound inside the gear shifter by gently shaking the gear shifter with his hand; when starting the vehicle, because the free clearance is too large, the gear shift signal may be triggered by mistake without fully executing the gear shift operation, thereby causing a safety accident of the entire vehicle shifting; and during the gear shifting process, the driver can clearly feel the gear position jumping and sticking, affecting the driving comfort of the entire vehicle. Summary of the invention

[0004] In order to solve the technical problems of large free clearance, easy mis-triggering of signals and poor shifting feel in the existing shifters, the present invention provides a shift pin assembly for an automotive electronic shifter.

[0005] The technical solution adopted by the present invention is:

[0006] A shift pin assembly for an automotive electronic shifter comprises an outer shift pin, an inner shift pin, a shift lever, a coil spring and a toothed groove; a stepped blind hole is arranged in the shift lever; the outer shift pin is provided with a cylindrical cavity, the top of the cylindrical cavity is open and the bottom is closed; the inner side wall of the cylindrical cavity is provided with a positioning rib, and the side wall of the outer shift pin is provided with a deformable buckle; the outer side wall of the inner shift pin is provided with a positioning through groove adapted to the positioning rib of the outer shift pin, the tail of the inner shift pin is provided with a plurality of raised inclined surfaces corresponding to the deformable buckle one by one, and the outer shift pin is provided with a plurality of raised inclined surfaces corresponding to the deformable buckle one by one. The pin is slidably arranged in the large hole of the shift lever step blind hole, and the head of the gear outer pin is in sliding contact with the shift tooth shape of the tooth groove; the coil spring and the gear inner pin are arranged in the cylindrical cavity of the gear outer pin, the upper end of the coil spring abuts against the bottom wall of the small hole of the shift lever step blind hole, and the lower end of the coil spring abuts against the top surface of the gear inner pin; the positioning rib of the gear outer pin is inserted into the positioning through groove of the gear inner pin, and the raised inclined surface of the gear inner pin pushes the deformable buckle of the gear outer pin outward, so that the deformable buckle tightly abuts against the inner wall of the cylindrical cavity.

[0007] Furthermore, the head of the gear outer pin is spherical, and the spherical structure is in sliding contact with the shift tooth spherical surface of the tooth groove.

[0008] Furthermore, a truncated cone is provided at the center of the bottom surface of the tail of the inner pin of the gear position, and the bottom surface of the truncated cone intersects with the bottom surface of the positioning slot. The positioning slots are provided in a plurality of numbers and are evenly distributed along the circumferential direction. The side wall of the positioning slot outside the truncated cone extends axially outward to form a raised inclined surface. The raised inclined surface is integrally formed with the inner pin of the gear position, and the structure is simple and the number of parts is small.

[0009] Furthermore, a horseshoe-shaped opening groove with a closed end facing upward is formed through the side wall of the cylindrical cavity at the tail of the gear outer pin, and the horseshoe-shaped opening grooves are evenly distributed along the circumference of the cylindrical cavity, and the tongue of the horseshoe-shaped opening groove forms a deformable buckle. The deformable buckle is integrally formed with the gear outer pin, with a simple structure and a small number of parts.

[0010] Furthermore, the bottom surface of the gear inner pin is set as an outer inclined surface inclined outwardly, and the inner side surface of the lower end of the deformable buckle protrudes radially inwardly to form an inner inclined surface inclined inwardly, and the outer inclined surface and the inner inclined surface are slidably matched. The deformable buckle is gradually pushed to deform by the inclined surface, and the deformable buckle is evenly stressed and not easy to break.

[0011] Furthermore, the bottom surface of the raised inclined surface is set as an outer inclined surface inclined outwardly, and the inner side surface of the lower end of the deformable buckle protrudes radially inwardly to form an inner inclined surface inclined inwardly, and the outer inclined surface and the inner inclined surface are slidably matched. The deformable buckle is gradually pushed to deform by the inclined surface, and the deformable buckle is evenly stressed and not easy to break.

[0012] Furthermore, a boss is provided on the bottom surface of the cylindrical cavity of the outer pin of the gear, a positioning hole is provided on the boss, a positioning column is provided at the center of the bottom surface of the round table at the tail of the inner pin of the gear, and the positioning hole is connected with the positioning column. When the vehicle is shifting, the axial displacement of the inner pin of the gear is limited by the positioning hole of the outer pin of the gear, so that the deformable buckle of the outer pin of the gear will not continue to open, thereby reducing the friction of shifting and ensuring the stability of the shifting force value.

[0013] Furthermore, a truncated cone is provided on the top surface of the gear inner pin head, and the outer diameter of the truncated cone matches the inner diameter of the coil spring. The lower end of the coil spring is sleeved on the truncated cone of the gear inner pin, and the coil spring is stabilized by positioning the truncated cone.

[0014] The beneficial effects of the present invention are as follows: the automobile gear pin assembly of the present invention has a small number of parts, a simple structure, high reliability, low manufacturing cost, and a small cumulative tolerance of dimensions formed by assembly; the design of the deformable buckle of the gear outer pin adapting to the gear inner pin can effectively reduce the assembly gap and friction between the components and improve the safety of the vehicle gear shifting; the gear pin head is designed to be spherical, which avoids the jumpiness in the gear shifting process, reduces the noise generated during the gear shifting process, and ensures the comfort of the gear shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the exploded structure of the shift pin assembly of the present invention.

[0016] Figure 2 It is a schematic diagram of the installation structure of the shift pin assembly of the present invention.

[0017] Figure 3 It is a schematic diagram of the connection structure between the gear position outer pin and the gear position inner pin of the present invention.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the gear position export of the present invention.

[0019] Figure 5 It is a three-dimensional structural schematic diagram of the gear internal pin of the present invention.

[0020] Figure 6 It is a structural schematic diagram of the toothed groove of the present invention. DETAILED DESCRIPTION

[0021] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with the embodiments, but the content of the present invention is not limited to the following embodiments.

[0022] Implementation Method 1

[0023] See also Figure 1 This embodiment provides a shift pin assembly for an automotive electronic shifter, the shift pin assembly comprising a shift outer pin 1, a shift inner pin 3, a shift lever 4, a cylindrical coil spring 2 and a toothed groove 5.

[0024] See also Figure 3 and Figure 4 The gear outer pin 1 is provided with a head 11 and a tail 12. The head 11 is in the shape of a solid cone, and the tip of the solid cone is a spherical structure 111. The tail 12 is connected to the head 11, and the tail 12 is in the shape of a hollow cylinder. A positioning rib 122 is provided at the entrance of the cylindrical cavity, and the positioning rib 122 is formed by the inner wall of the circular cavity protruding radially outward. A plurality of positioning ribs 122 can be provided, and the plurality of positioning ribs are evenly distributed along the circumference of the circular cavity. For example, in the present embodiment, a total of three positioning ribs 122 are provided, and the two side surfaces of the positioning rib 122 are inclined surfaces. A circular boss is provided at the center of the bottom surface of the circular cavity, and a positioning hole 125 is provided at the center of the top surface of the circular boss. A horseshoe-shaped opening groove 121 with a closed end facing upward is penetrated through the side wall of the cylindrical cavity of the tail portion 12, and the horseshoe-shaped opening grooves are evenly distributed along the circumference of the cylindrical cavity. The tongue of the horseshoe-shaped opening groove forms a deformable buckle 123, and the inner side surface of the lower end of the deformable buckle 123 protrudes radially inward to form an inwardly inclined inner slope 1231.

[0025] See also Figure 5The inner pin 3 of the gear position is provided with a cylindrical body, and the outer diameter of the cylindrical body is adapted to the inner diameter of the cylindrical cavity of the outer pin 1 of the gear position. The outer surface of the cylinder is provided with three circumferentially evenly distributed axial through grooves 32, and the axial through grooves 32 are adapted to the positioning ribs 122 of the outer pin 1 of the gear position. For example, in this embodiment, the two inner side surfaces of the axial through grooves 32 are inclined surfaces. The head of the inner pin 3 of the gear position is provided with a conical cone 31, and the conical cone 31 is formed by the radial outward protrusion of the center part of the top surface of the cylindrical body. The tail of the inner pin 3 of the gear position is provided with three raised inclined surfaces 33, and the inner side surfaces of the three raised inclined surfaces 33 are outer inclined surfaces 331 inclined outwardly; the three raised inclined surfaces 33 are formed by the axial outward protrusion of the outer side wall of the axial through groove 32. The center of the end face of the tail end of the gear inner pin 3 protrudes axially outward to form a frustum, the bottom surface of the frustum intersects with the bottom surface of the axial through groove 32, and the center of the top surface of the frustum protrudes axially outward to form a cylindrical positioning column 34, which is arranged in the three raised inclined surfaces 33.

[0026] See also Figure 1 The middle part of the shift lever 4 is provided with a spherical protrusion, and the upper and lower ends of the spherical protrusion are cylindrical parts. The upper cylindrical part is used to connect the handle, and the lower cylindrical part is axially provided with a stepped blind hole, which is composed of a small diameter circular hole 411 and a large diameter circular hole 412. The small diameter circular hole 411 is provided at the upper end of the large diameter circular hole 412, and the lower end of the large diameter circular hole 412 passes through the bottom of the lower cylindrical part, and a shoulder is formed at the connection between the small diameter circular hole 411 and the large diameter circular hole 412.

[0027] See also Figure 6 A shift tooth shape 51 is provided in the tooth groove 5.

[0028] See also Figure 2 and Figure 3 The outer gear pin 1 can be slidably arranged in the large diameter circular hole 412 of the stepped blind hole of the gear lever, and the spherical structure 111 of the head of the outer gear pin 1 is in sliding contact with the shift tooth shape 51 of the tooth groove 5; the cylindrical coil spring 2 and the inner gear pin 3 are arranged in the cylindrical cavity 121 of the outer gear pin, and the lower end of the cylindrical coil spring 2 is sleeved on the conical truncated cone 31 of the inner gear pin 3, the upper end of the cylindrical coil spring 2 abuts against the bottom surface of the small diameter circular hole 411 of the gear lever 4, and the lower end abuts against the inner gear pin 3, the positioning rib 122 of the outer gear pin 1 is inserted in the through groove 32 of the inner gear pin 3, the outer inclined surface 331 of the raised inclined surface 33 of the inner gear pin 3 abuts against the inner inclined surface 1231 of the deformable buckle 123 of the outer gear pin 1, and the tail positioning column 34 of the inner gear pin 3 is inserted in the positioning hole 125 of the outer gear pin 1.

[0029] When the vehicle is stationary, the cylindrical coil spring 2 is in a compressed state. The cylindrical coil spring 2 presses the inner gear pin 3 through its own pre-pressure. The raised inclined surface 33 of the inner gear pin 3 presses the deformable buckle 123 of the outer gear pin 1 obliquely downward. The deformable buckle 123 is deformed, and its outer surface tightly contacts the inner wall of the large diameter circular hole 412 of the shift lever 4, thereby reducing the assembly gap between the structural parts.

[0030] When the vehicle is shifting gears, the spherical structure of the head of the gear outer pin 1 contacts the shift tooth spherical surface of the tooth groove 5, thereby ensuring the comfort of gear shifting. At the same time, the axial displacement of the gear inner pin 3 is limited by the positioning hole 125 of the gear outer pin 1, so that the deformable buckle 123 of the gear outer pin 1 no longer continues to open, reducing the gear shifting friction and ensuring the stability of the gear shifting force value.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A shift pin assembly for an automotive electronic shifter, characterized in that: The invention comprises a gear outer pin, a gear inner pin, a gear shift lever, a coil spring and a toothed groove; a stepped blind hole is arranged in the gear shift lever; a cylindrical cavity is arranged in the gear outer pin, the top of the cylindrical cavity is open and the bottom is closed; a positioning rib is arranged on the inner side wall of the cylindrical cavity, and a deformable buckle is arranged on the side wall of the gear outer pin; a positioning through groove is arranged on the outer side wall of the gear inner pin to match the positioning rib of the gear outer pin, and a plurality of raised inclined surfaces corresponding to the deformable buckle are arranged on the tail of the gear inner pin; the gear outer pin can be slidably arranged on the gear shift lever In the large hole of the rod step blind hole, the head of the gear outer pin is in sliding contact with the shift tooth shape of the toothed groove; the coil spring and the gear inner pin are arranged in the cylindrical cavity of the gear outer pin, the upper end of the coil spring abuts against the bottom wall of the small hole of the shift rod step blind hole, and the lower end of the coil spring abuts against the top surface of the gear inner pin; the positioning rib of the gear outer pin is inserted in the positioning through groove of the gear inner pin, and the raised inclined surface of the gear inner pin pushes the deformable buckle of the gear outer pin outward, so that the deformable buckle tightly abuts against the inner wall of the cylindrical cavity.

2. The shift pin assembly according to claim 1, characterized in that: The head of the gear outer pin is spherical, and the spherical structure is in sliding contact with the gear shift tooth spherical surface of the tooth groove.

3. The shift pin assembly according to claim 1 or 2, characterized in that: A truncated cone is provided at the center of the bottom surface of the tail of the inner pin of the gear position, and the bottom surface of the truncated cone intersects with the bottom surface of the positioning groove. There are several positioning grooves, which are evenly distributed along the circumferential direction. The side walls of the positioning grooves outside the truncated cone extend axially outward to form a raised inclined surface.

4. The shift pin assembly according to claim 3, characterized in that: A horseshoe-shaped opening groove with a closed end facing upward is penetrated through the side wall of the cylindrical cavity at the tail of the gear outer pin. The horseshoe-shaped opening grooves are evenly distributed along the circumference of the cylindrical cavity, and the tongue of the horseshoe-shaped opening groove forms a deformable buckle.

5. The shift pin assembly according to claim 4, characterized in that: The bottom surface of the raised inclined surface is set as an outer inclined surface inclined outwardly, and the inner side surface of the lower end of the deformable buckle protrudes radially inwardly to form an inner inclined surface inclined inwardly, and the outer inclined surface is slidably matched with the inner inclined surface.

6. The shift pin assembly according to claim 3, characterized in that: A boss is arranged on the bottom surface of the cylindrical cavity of the outer pin of the gear position, a positioning hole is arranged on the boss, a positioning column is arranged at the center of the boss on the bottom surface of the tail of the inner pin of the gear position, and the positioning hole is connected with the positioning column.

7. The shift pin assembly according to claim 1, characterized in that: A truncated cone portion is provided on the top surface of the gear inner pin head, and the outer diameter of the truncated cone portion is matched with the inner diameter of the coil spring.

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