CN212360750U

CN212360750U - Zipper connecting rod type differential parking locking mechanism

Info

Publication number: CN212360750U
Application number: CN202020391813.9U
Authority: CN
Inventors: 韩启锋; 田联明; 许艳利; 刘谓欢; 包丽群; 殷其栋
Original assignee: Kuntye Vehicle System Changzhou Co Ltd
Current assignee: Kuntai Vehicle System Changzhou Co ltd
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-01-15
Anticipated expiration: 2030-03-25

Abstract

The utility model discloses a zip fastener connecting rod type differential parking locking mechanism, including the compressing member that sets firmly in the gearbox box, the pivot is equipped with parking pawl and parking rocking arm on the compressing member, the parking rocking arm can be driven its circumferential direction by the rocker that shifts and rotate, an actuating assembly has set firmly on the parking rocking arm, the actuating assembly presses on the execution piece that the parking pawl is kept away from one end of compressing member, its pressing force makes the execution piece block locate on the parking ratchet wheel rather than meshing; and the parking pawl is also provided with a return spring for resetting the parking pawl, and the other end of the return spring is fixedly connected with the gearbox body. The beneficial effects of the utility model are mainly embodied in that: the structure is simplified, batch manufacturing and quick installation are facilitated, the production efficiency is improved, the production cost is reduced, the manufacturing difficulty is reduced due to the fact that the structure is simplified, and the processing precision and the production quality can be improved.

Description

Zipper connecting rod type differential parking locking mechanism

Technical Field

The utility model relates to an automotive transmission technical field particularly, especially relates to a zip fastener connecting rod formula differential mechanism parking locking mechanism.

Background

Parking mechanisms or assemblies are used in motor vehicles to allow the vehicle to enter and maintain a "parked" condition or state. The park assembly typically includes a park link or cam that selectively actuates a park pawl that operatively engages a park gear of the vehicle to maintain the vehicle in a "parked" position or state.

The parking link is typically mechanically coupled to the vehicle shifter and moves in response to movement of the shifter. When the shifter is moved to the "park" position, the park link engages the park pawl, which pivots or rotates into a position between a pair of teeth disposed on the park gear, thereby substantially preventing further rotation of the park gear and output shaft.

However, the existing parking pull arm connecting rod is complex in structure, high in manufacturing difficulty of a driven connecting rod, low in production efficiency and high in cost, the problem that a parking drawing wire is not firmly connected with the parking pull arm can occur, and the situations that the parking pull arm is too early worn and the like due to low precision can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the not enough of prior art existence, provide a zip connecting rod formula differential mechanism parking locking mechanism.

The purpose of the utility model is realized through the following technical scheme:

a zipper connecting rod type differential parking locking mechanism comprises a pressing piece fixedly arranged in a gearbox box body, wherein a parking pawl and a parking rocker arm are arranged on the pressing piece in a pivot mode, the parking rocker arm can be driven by a gear shifting rocker to rotate circumferentially, and the motion direction of the gear shifting rocker is perpendicular to the motion direction space of the parking rocker arm; the parking rocker arm is fixedly provided with an actuating component, the actuating component presses an actuating block at one end of the parking pawl, which is far away from the pressing piece, and the actuating block is clamped on a parking ratchet wheel meshed with the actuating block by the pressing force; and the parking pawl is also provided with a return spring for resetting the parking pawl, and the other end of the return spring is fixedly connected with the gearbox body.

Preferably, a gear shifting connecting rod is arranged on the parking rocker arm and comprises a connecting rod and ball pins arranged at two ends of the connecting rod, wherein the ball pin at one end is connected with the gear shifting rocker arm, and the ball pin at the other end is connected with the parking rocker arm.

Preferably, the gear shifting rocker is driven to rotate by a connecting rod assembly arranged in the gearbox box body, the connecting rod assembly comprises a driving shaft, the gear shifting rocker is sleeved on the driving shaft, a connecting hole is formed in each of the gear shifting rocker and the driving shaft, and an elastic pin can be inserted into the connecting hole to fixedly connect the gear shifting rocker and the driving shaft.

Preferably, the driving shaft is provided with a shaft shoulder which is integrally formed with the driving shaft, and the shaft shoulder is matched with the box body sleeved on the driving shaft to limit the sealing element in the box body.

Preferably, still be equipped with flat mouth portion, step portion and external screw thread portion in proper order in the drive shaft, the cover is equipped with angle sensor on the flat mouth portion, the cover is equipped with the cable rocking arm on the step portion, the cover is equipped with the fastening nut who connects rather than adapting to on the external screw thread portion, just fastening nut is located the top of drive shaft.

Preferably, the actuating assembly comprises an L-shaped actuating rod fixedly arranged on the parking rocker arm, a limiting lug and a fixed pier head are fixedly arranged on a driving end of the actuating rod, a driving block and an actuating spring are further arranged between the limiting lug and the fixed pier head and sleeved on the driving end, one end of the actuating spring is tightly attached to the limiting lug, and the other end of the actuating spring is tightly attached to the driving block; the driving surface and the locking surface of the driving block can be tightly attached to the parking pawl.

Preferably, the parking rocker arm comprises a first limiting groove and a second limiting groove which are arranged on the parking rocker arm, and a sliding surface is arranged between the first limiting groove and the second limiting groove; the gearbox body is further fixedly provided with a positioning seat, and the positioning seat can slide on the sliding surface and is clamped in the first limiting groove and the second limiting groove.

Preferably, the parking rocker arm and the pressing piece are both provided with a pin hole, and a pin shaft can be inserted into the pin hole.

Preferably, the pressing member and the parking pawl are pivotally connected by a latch.

Preferably, a guide block is further fixedly arranged on the gearbox body, and an arc-shaped guide groove or a square-shaped guide groove is formed in the guide block and used for limiting and guiding the upper portion of the execution block.

The beneficial effects of the utility model are mainly embodied in that:

1. the structure is modularized, the batch manufacturing and the quick installation are convenient, the production efficiency is improved, the production cost is reduced, the manufacturing difficulty is reduced due to the simplified structure, and the processing precision and the production quality can be improved;

2. the parking locking mechanism is characterized in that a connecting rod assembly is adopted to drive a parking rocker arm to rotate circumferentially, the parking rocker arm drives an actuating assembly to press a parking pawl, an actuating block of the parking pawl is clamped into a parking ratchet wheel, parking is achieved, connection between the parking pawl and the actuating assembly is reliable, and therefore the braking performance of the whole parking locking mechanism is improved;

3. the limiting groove can limit the parking rocker arm when the rotation angle of the parking rocker arm is abnormal, so that the parking function is prevented from being failed;

4. an angle sensor monitors in real time during the P-gear shifting process, and closed-loop accurate control is performed;

5. the guide block is provided with an arc guide groove or a square guide groove, so that the wear resistance is better, and the self-locking safety is more reliable.

Drawings

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

FIG. 1: the structure of the utility model is shown schematically;

FIG. 2: the utility model discloses a three-dimensional view of a middle actuating component;

FIG. 3: the utility model discloses a three-dimensional view of a parking rocker arm;

FIG. 4: the utility model discloses well stereogram of drive shaft.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not limited to the present invention, and structural, method, or functional changes made by those skilled in the art according to these embodiments are all included in the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 4, the utility model discloses a zip fastener connecting rod formula differential mechanism parking locking mechanism, including setting firmly compressing tightly 1 in the gearbox box, compress tightly and be equipped with a parking rocking arm 3 on 1. A pin hole 35 is formed in each of the parking rocker arm 3 and the pressing member 1, and a pin shaft 36 can be inserted into the pin hole 35, so that the parking rocker arm 3 and the pressing member 1 are pivotally connected.

The design points of the utility model lie in: the parking rocker arm 3 can be driven by a gear shifting rocker 7 to rotate circumferentially, and the motion direction of the gear shifting rocker 7 is perpendicular to the motion direction space of the parking rocker arm 3. Of course, an included angle formed by the movement direction of the gear shifting rocker 7 and the movement direction of the parking rocker arm 3 can also allow certain error to exist, and the included angle is approximately vertical. The design reduces the axial and radial occupied space, and is convenient for better layout in the gearbox box body. Specifically, be equipped with a shift connecting rod 37 on the parking rocking arm 3, shift connecting rod 37 includes connecting rod 371 and sets up the ball round pin 372 at its both ends, wherein one end the ball round pin 372 with it is connected to shift rocker 7, the other end the ball round pin 372 with parking rocking arm 3 is connected. In the structure, the gear shifting rocker 7 rotates to drive the parking rocker arm 3 to rotate circumferentially through the gear shifting connecting rod 37. This simple structure is convenient for make in batches and install fast, is favorable to improving production efficiency and reduction in production cost, and because simple structure, the preparation degree of difficulty reduces thereupon, can also be favorable to improving machining precision and production quality like this.

Further, the gear shifting rocker 7 is driven to rotate by a connecting rod assembly 4 arranged in the gearbox box body, the connecting rod assembly 4 comprises a driving shaft 41, the gear shifting rocker 7 is sleeved on the driving shaft 41, a connecting hole 45 is formed in each of the gear shifting rocker 7 and the driving shaft 41, and an elastic pin 43 can be inserted into the connecting hole 45 to fixedly connect the gear shifting rocker 7 and the driving shaft 41.

In this embodiment, the driving shaft 41 is provided with a shaft shoulder 411 integrally formed with the driving shaft, the shaft shoulder 411 and the box 46 sleeved on the driving shaft 41 are mutually matched to limit a sealing element in the box 46, and the box 46 is fixedly connected with a gearbox box. Still be equipped with flat oral area 412, step portion 413 and external screw thread portion 414 on the drive shaft 41 in proper order, the cover is equipped with angle sensor 47 on the flat oral area 412, the cover is equipped with cable rocking arm 48 on the step portion 413, the cover is equipped with the fastening nut 49 rather than mating connections on the external screw thread portion 414, just fastening nut 49 is located the top of drive shaft 41.

The utility model discloses an another design point lies in: a parking pawl 2 is arranged on the pressing piece 1 through a pivot of a plug 23, an actuating component 5 is fixedly arranged on the parking rocker arm 3, the actuating component 5 presses on an actuating block 21 at one end of the parking pawl 2, which is far away from the pressing piece 1, and the actuating block 21 is clamped on a parking ratchet wheel meshed with the actuating block by the pressing force of the actuating component; the parking pawl 2 is further provided with a return spring 22 for returning the parking pawl, and the other end of the return spring 22 is fixedly connected with the gearbox body. Compared with the prior art, the utility model discloses a parking rocking arm drive actuates the subassembly and presses the parking pawl for in the execution block card of parking pawl to the parking ratchet wheel, realize the parking, it is reliable to connect between this structure, thereby improves the brake performance of whole parking locking mechanism.

Specifically, the actuating assembly 5 includes an L-shaped actuating rod 51 fixedly arranged on the parking rocker arm 3, a limit lug 53 and a fixed lug 54 are fixedly arranged on a driving end 52 of the actuating rod 51, a driving block 55 and an actuating spring 56 which are sleeved on the driving end 52 are further arranged between the limit lug 53 and the fixed lug 54, one end of the actuating spring 56 is tightly attached to the limit lug 53, and the other end is tightly attached to the driving block 55; the drive surface 551 and the locking surface 552 of the drive block 55 can be brought into close contact with the parking pawl 2.

The parking rocker arm 3 comprises a first limiting groove 31 and a second limiting groove 32 which are arranged on the parking rocker arm, and a sliding surface 33 is arranged between the first limiting groove 31 and the second limiting groove 32; a positioning seat 34 is further fixedly arranged on the gearbox body, and the positioning seat 34 can slide on the sliding surface 33 and is clamped in the first limiting groove 31 and the second limiting groove 32. The first limiting groove 31 and the second limiting groove 32 are arranged to limit the parking rocker arm when the rotation angle of the parking rocker arm is abnormal, so that the parking function is prevented from being invalid.

In this embodiment, a guide block 6 is further fixedly arranged on the gearbox body, and an arc-shaped guide groove or a square-shaped guide groove is formed in the guide block 6 and used for limiting and guiding the upper portion of the execution block 21. The arc-shaped guide groove or the square guide groove on the guide block is designed, so that the wear resistance of the guide block is better, and the self-locking safety is more reliable.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.

Claims

1. Zip connecting rod formula differential mechanism parking locking mechanism is including setting firmly compressing tightly piece (1) in the gearbox box, its characterized in that: a parking pawl (2) and a parking rocker arm (3) are arranged on the pressing piece (1) through a pivot, the parking rocker arm (3) can be driven by a gear shifting rocker (7) to rotate circumferentially, and the motion direction of the gear shifting rocker (7) is perpendicular to the motion direction space of the parking rocker arm (3); an actuating component (5) is fixedly arranged on the parking rocker arm (3), the actuating component (5) presses on an actuating block (21) at one end of the parking pawl (2) far away from the pressing piece (1), and the actuating block (21) is clamped on a parking ratchet wheel meshed with the actuating block by the pressing force; and the parking pawl (2) is also provided with a return spring (22) for resetting the parking pawl, and the other end of the return spring (22) is fixedly connected with the gearbox body.

2. The zip link differential parking lock mechanism of claim 1, wherein: be equipped with one on parking rocking arm (3) and shift connecting rod (37), shift connecting rod (37) include connecting rod (371) and set up ball round pin (372) at its both ends, wherein one end ball round pin (372) with it connects to shift rocker (7), the other end ball round pin (372) with parking rocking arm (3) are connected.

3. The zip link differential parking lock mechanism of claim 2, wherein: the gear shifting rocker (7) is driven to rotate by a connecting rod assembly (4) arranged in the gearbox box body, the connecting rod assembly (4) comprises a driving shaft (41), the gear shifting rocker (7) is sleeved on the driving shaft (41), a connecting hole (45) is formed in each of the gear shifting rocker (7) and the driving shaft (41), and an elastic pin (43) can be inserted into the connecting hole (45) to fixedly connect the gear shifting rocker (7) and the driving shaft (41).

4. The zip link differential parking lock mechanism of claim 3, wherein: the driving shaft (41) is provided with a shaft shoulder (411) integrally formed with the driving shaft, and the shaft shoulder (411) is matched with a box body (46) sleeved on the driving shaft (41) to limit a sealing element in the box body (46).

5. The zip link differential parking lock mechanism of claim 3, wherein: still be equipped with flat oral area portion (412), step portion (413) and external screw thread portion (414) on drive shaft (41) in proper order, it is equipped with angle sensor (47) to go up the cover in flat oral area portion (412), it is equipped with cable rocking arm (48) to go up the cover in step portion (413), the cover is equipped with fastening nut (49) rather than joining in marriage and join in marriage on external screw thread portion (414), just fastening nut (49) are located the top of drive shaft (41).

6. The zip link differential parking lock mechanism of claim 1, wherein: the actuating assembly (5) comprises an L-shaped actuating rod (51) fixedly arranged on the parking rocker arm (3), a limiting lug (53) and a fixed pier head (54) are fixedly arranged on a driving end (52) of the actuating rod (51), a driving block (55) and an actuating spring (56) which are sleeved on the driving end (52) are further arranged between the limiting lug (53) and the fixed pier head (54), one end of the actuating spring (56) is tightly attached to the limiting lug (53), and the other end of the actuating spring is tightly attached to the driving block (55); the drive surface (551) and the locking surface (552) of the drive block (55) can be brought into contact with the parking pawl (2).

7. The zip link differential parking lock mechanism of claim 6, wherein: the parking rocker arm (3) comprises a first limiting groove (31) and a second limiting groove (32) which are arranged on the parking rocker arm, and a sliding surface (33) is arranged between the first limiting groove (31) and the second limiting groove (32); the gearbox body is further fixedly provided with a positioning seat (34), and the positioning seat (34) can slide on the sliding surface (33) and is clamped in the first limiting groove (31) and the second limiting groove (32).

8. The zip link differential parking lock mechanism of claim 7, wherein: still all seted up a pinhole (35) on parking rocking arm (3) and pressing down piece (1), a round pin axle (36) plug-in connect to in pinhole (35).

9. The zip link differential parking lock mechanism of claim 1, wherein: the pressing piece (1) is pivotally connected with the parking pawl (2) through a bolt (23).

10. The zip link differential parking lock mechanism of claim 1, wherein: the gearbox body is further fixedly provided with a guide block (6), and the guide block (6) is provided with an arc-shaped guide groove or a square guide groove and used for limiting and guiding the upper part of the execution block (21).