Gear engaging positioning structure of gear shifting booster

Abstract

The utility model discloses a gear engaging positioning structure of a gear shifting booster, and belongs to the technical field of transmission gear shifting assistance. Comprising a control device shell and a booster inner shaft shifting block arranged in the control device shell. An inner boss and an outer boss are arranged on the wall face, matched with the booster inner shaft shifting block, of the control device shell. An inner through hole is formed in the inner boss, and an outer through hole is formed in the outer boss; the inner through hole and the outer through hole are coaxial; a pin is installed in the inner through hole, one end of the pin makes contact with the booster inner shaft shifting block, a plug internally provided with a spring is installed in the outer through hole, and one end of the spring extends out of the plug to abut against the other end of the pin. The matching molded surface of the booster inner shaft shifting block and the pin is of a double-W groove structure. A pin is matched with a double-W groove molded surface on the side face of a booster inner shaft shifting block and matched with a boss of a shell of an operating device to achieve neutral gear positioning, on-gear positioning and gear engaging limiting.

Description

Technical Field

[0001] The utility model belongs to the technical field of transmission gear shift assist technology and relates to a gear shift assist device gear engaging positioning structure. Background Art

[0002] Manual transmissions still occupy a high market share in the automobile market due to their simple structure and low cost. However, ordinary manual transmissions have large shifting force, which increases the labor intensity of drivers. With the development of modern automobile design concepts centered on people, comfort has become an important indicator for evaluating automobiles. Small shifting force and shifting comfort have become selling points for vehicles and key points of competition for transmission manufacturers. In order to reduce shifting force and increase shifting comfort, transmission manufacturers have added a shift booster to the transmission. However, after the transmission is equipped with a shift booster, the transmission gear shifting stroke becomes larger due to the influence of the opening stroke of the valve core, which is contrary to the ergonomic design of the cab. At the same time, due to the small opening force of the valve core, the shifting suction feeling is reduced and the shifting feel becomes worse. For example, the Chinese invention patent "A Transmission Power Shift Limiting Device" with application number 201710476852.1, through the block mounting hole and the hand-feeling pin on one side of the operating device housing, a limiting groove is set on one side of the booster inner shaft shift head in the operating device housing. When the transmission shifts gears, when the booster inner shaft shift head rotates to the side of the groove and contacts the hand-feeling pin, the booster inner shaft shift head cannot continue to rotate, the shift booster input shaft stops moving, and the shift booster output shaft continues to move under the action of the air pressure in the booster cylinder and the inertia force of the self-locking spring in the transmission to push the shift head to complete the synchronizer shift action. However, the side shape of the booster inner shaft shift head and the structure of the hand-feeling pin make the shift feel still poor, not smooth, and the shift stroke has not been effectively reduced. Utility Model Content

[0003] The utility model aims to solve the technical problems in the prior art that the gear shifting feel is poor and the gear shifting stroke becomes larger after the transmission is equipped with a gear shift booster, and provides a gear shift booster gear positioning structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] In the first aspect, the utility model provides a gear shift booster gear positioning structure, comprising an operating device housing and a booster inner shaft shift head arranged inside the operating device housing; an inner boss and an outer boss are arranged at the wall position of the operating device housing that cooperates with the booster inner shaft shift head; an inner through hole is arranged on the inner boss, and an outer through hole is arranged on the outer boss; the inner through hole and the outer through hole are coaxial; a pin is installed in the inner through hole, one end of the pin is in contact with the booster inner shaft shift head, and a plug with a spring arranged inside is installed in the outer through hole, one end of the spring extends out of the plug and abuts against the other end of the pin; the matching surface of the booster inner shaft shift head and the pin is a double W groove structure.

[0006] The utility model is further improved in that:

[0007] When the transmission is in neutral, the pin contacts the middle groove of the double W groove structure to achieve neutral positioning; planar bosses are provided on both sides of the double W groove structure on the inner shaft shift head of the booster, and when the plane of the planar boss contacts the end face of the inner boss, gear limiting is achieved.

[0008] The end of the pin that contacts the inner shaft shift head of the booster is slidably connected with a ball that matches the double W groove structure.

[0009] The spherical ball is a steel ball.

[0010] A spherical groove is arranged at one end of the pin close to the inner shaft shifting head of the booster, and the ball is riveted in the spherical groove; rolling friction is generated between the ball and the spherical groove.

[0011] The blockage is a bolt with a hollow stud portion; the end diameter of the bolt is larger than the inner diameter of the outer through hole; one end of a spring is fixedly connected to the hollow position of the stud; the bolt is cooperatively connected with the outer through hole.

[0012] The relatively small diameter cylindrical portion is connected to the outer through hole through threaded fitting.

[0013] A limiting boss is arranged at one end of the pin; and the outer diameter of the limiting boss is larger than the inner diameter of the inner through hole.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model discloses a gear-shift booster gear-engaging positioning structure, which realizes neutral and gear positioning by using a column pin to cooperate with a double W-groove structure on the side of a booster inner shaft shift head and a boss of an operating device housing.

[0016] Furthermore, planar bosses are provided on both sides of the double W-groove structure on the inner shaft shift head of the booster, and when the plane of the planar boss contacts the end surface of the inner boss, the gear engaging limit is achieved.

[0017] Furthermore, the pin has a steel ball structure at the end, which enables sliding friction between the pin and the side surface of the booster inner shaft shift head during gear shifting, thereby improving the gear shifting feel. It has strong versatility and can be used in all transmissions with gear shift boosters. It is quickly accepted and promoted by OEMs and users, and has high economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a structural diagram of a gear shift booster gear positioning structure in the utility model when in neutral gear;

[0020] Figure 2 The utility model is a structural diagram of a gear-shift booster gear-engaging positioning structure when in gear.

[0021] Among them: 1-booster inner shaft shift head; 2-operating device housing; 3-pin; 4-spring; 5-block; 6-shift booster input shaft; 7-shift booster output shaft; 8-plane boss. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the embodiments of the present utility model, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0028] The utility model is further described in detail below with reference to the accompanying drawings:

[0029] See also Figure 1The utility model discloses a gear shift booster gear positioning structure, including an operating device housing 2 and a booster inner shaft shift head 1 arranged inside the operating device housing 2; an inner boss and an outer boss are arranged at a wall position on the operating device housing 2 that matches the booster inner shaft shift head 1; an inner through hole is arranged on the inner boss, and an outer through hole is arranged on the outer boss; the inner through hole and the outer through hole are coaxial; a pin 3 is installed in the inner through hole, one end of the pin 3 contacts the booster inner shaft shift head 1, and an inner through hole is installed in the outer through hole There is a plug 5 with a spring 4, one end of the spring 4 extends out of the plug 5 and presses against the other end of the pin 3; the end of the pin 3 that contacts the booster inner shaft shift head 1 is slidably connected with a steel ball that cooperates with the double W groove structure, and the end of the pin 3 close to the booster inner shaft shift head 1 is provided with a spherical groove, and the ball is riveted in the spherical groove, and the movement of the ball in the spherical groove is rolling friction; preferably, a number of small steel balls are provided between the ball and the spherical groove, so that the rolling friction between the ball and the spherical groove is smoother. The pin uses a structure with a steel ball at the end, and the sliding friction between the pin and the side surface of the booster inner shaft shift head is achieved during the gear shifting process, which improves the gear shifting feel. It has strong versatility and can be used for all transmissions with gear shift boosters. It is quickly accepted and promoted by OEMs and users, and has high economic and social benefits.

[0030] The mating profile of the booster inner shaft shift head 1 and the pin 3 is a double W groove structure. When the transmission is in neutral, the pin 3 contacts the middle groove of the double W groove structure to achieve neutral positioning; the pin is mated with the double W groove structure on the side of the booster inner shaft shift head and the boss of the operating device housing to achieve neutral and in-gear positioning.

[0031] See also Figure 2 , the booster inner shaft shift head 1 is provided with planar bosses 8 on both sides of the double W groove structure, and when the plane of the planar boss 8 contacts the end face of the inner boss, the gear engaging limit is achieved. The plug (5) is a bolt with a hollow stud portion; the end diameter of the bolt is larger than the inner diameter of the outer through hole; one end of the spring (4) is fixedly connected to the hollow position of the stud; the bolt is connected in cooperation with the outer through hole. The end of the bolt is an external hexagonal structure. A limiting boss is provided at one end of the pin 3; the outer diameter of the limiting boss is larger than the inner diameter of the inner through hole.

[0032] The working principle of the utility model is as follows:

[0033] A boss is added to the inside and outside of the side surface of the operating device housing 2 corresponding to the booster inner shaft shift head 1, and a light hole cooperating with the column pin and a threaded hole cooperating with the plug are processed on the outer boss, and a plane cooperating with the booster inner shaft shift head 1 is processed on the inner boss; the side surface of the booster inner shaft shift head 1 has a "double W" profile that cooperates with the column pin and the operating device housing, and the shape of the profile is related to the gear shift feel and the gear limit angle. In order to provide the gear shift feel, a compressed spring 4 is installed between the column pin 3 and the plug 5; when the gearbox is in neutral, the column pin 3 contacts the middle of the side surface of the booster inner shaft shift head 1 to achieve neutral positioning. When the transmission shifts gears, the booster inner shaft shift head 1 rotates, squeezing the column pin 3 to overcome the spring force of the spring 4, and when the uppermost plane of the side surface of the booster inner shaft shift head 1 contacts the plane inside the side surface of the operating housing 2, the booster inner shaft shift head 1 cannot continue to rotate, thereby achieving the gear limit.

[0034] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gear shift booster gear positioning structure, characterized in that: The invention comprises an operating device housing (2) and a booster inner shaft shifting head (1) arranged inside the operating device housing (2); an inner boss and an outer boss are arranged at a wall position on the operating device housing (2) that matches with the booster inner shaft shifting head (1); an inner through hole is arranged on the inner boss, and an outer through hole is arranged on the outer boss; the inner through hole and the outer through hole are coaxial; a pin (3) is installed in the inner through hole, one end of the pin (3) contacts with the booster inner shaft shifting head (1), and a plug (5) with a spring (4) arranged inside is installed in the outer through hole, one end of the spring (4) extends out of the plug (5) and abuts against the other end of the pin (3); the matching profile of the booster inner shaft shifting head (1) and the pin (3) is a double W groove structure.

2. The gear shift booster gear positioning structure according to claim 1, characterized in that: When the transmission is in neutral, the pin (3) contacts the middle groove of the double W groove structure to achieve neutral positioning; the booster inner shaft shift head (1) is provided with planar bosses (8) on both sides of the double W groove structure, and when the plane of the planar boss (8) contacts the end surface of the inner boss, gear engagement limiting is achieved.

3. The gear shift booster gear positioning structure according to claim 1, characterized in that: One end of the pin (3) that contacts the booster inner shaft shift head (1) is slidably connected to a round ball that cooperates with the double W groove structure.

4. The gear-shift booster gear-engaging positioning structure according to claim 3, characterized in that: The spherical ball is a steel ball.

5. The gear-shift booster gear-engaging positioning structure according to claim 3, characterized in that: A spherical groove is provided at one end of the column pin (3) close to the booster inner shaft shift head (1), and the ball is riveted into the spherical groove; rolling friction is generated between the ball and the spherical groove.

6. The gear shift booster gear positioning structure according to claim 1, characterized in that: The plug (5) is a bolt with a hollow stud portion; the diameter of the end of the bolt is larger than the inner diameter of the outer through hole; one end of a spring (4) is fixedly connected to the hollow position of the stud; and the bolt is cooperatively connected to the outer through hole.

7. The gear shift booster gear positioning structure according to claim 6, characterized in that: The bolt is connected to the outer through hole through threaded fitting.

8. The gear shift booster gear positioning structure according to claim 1, characterized in that: A limiting boss is provided at one end of the pin (3); the outer diameter of the limiting boss is greater than the inner diameter of the inner through hole.

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