Shifting fork

Abstract

The shifting fork comprises a shifting fork shaft, a shifting fork body, an elastic plunger, a sliding bearing and a position induction magnet. According to the shifting fork, the shifting fork body, the driving part and the elastic plunger are arranged through the die-casting integrated forming process, the number of parts contained in the shifting fork can be reduced by simplifying the installation mode of the position induction magnet, multiple sets of stamping grinding tools do not need to be developed during manufacturing, the manufacturing cost of the shifting fork is reduced, and the competitiveness of products is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gearboxes, in particular to a shift fork. BACKGROUND

[0002] The shift fork is a core component in the shifting operation of an automobile gearbox, mainly used to control the shifting operation of the transmission. It changes the speed ratio of input and output by shifting the intermediate gear wheel, thereby realizing different speed ranges. The shift fork is connected to the shifting handle and located at the lower end of the handle. When the driver operates the shifting handle, the shift fork will act accordingly.

[0003] In related technologies, because the existing shift fork mechanism contains a large number of parts and has a complex structure, multiple sets of stamping dies need to be developed to manufacture these parts during manufacturing and assembly, thus resulting in high manufacturing cost of the shift fork and difficulty in maintaining a good cost advantage in the current fierce market environment.

[0004] UTILIZABLE CONTENT

[0005] The present application provides a shift fork to solve the problem of high production cost.

[0006] In a first aspect, the present application provides a shift fork, comprising:

[0007] A shift fork shaft having a first limiting groove; the first limiting groove is circumferentially arranged on the outer wall of the shift fork shaft;

[0008] A shift fork body rotatably sleeved on the shift fork shaft; the shift fork body comprises a cavity and a driving part; the first limiting groove is located in the cavity; the driving part is arranged at the top of the shift fork body and integrally formed with the shift fork body;

[0009] An elastic plunger having an elastic column; the elastic column is arranged through the shift fork body, and one end of the elastic plunger extends into the first limiting groove;

[0010] A sliding bearing sleeved on the shift fork shaft and located between the shift fork shaft and the shift fork body;

[0011] A position sensing magnet in the shape of a cylinder; the position sensing magnet is detachably connected to the shift fork body.

[0012] Further, the elastic plunger comprises a limiting boss vertically arranged on the shift fork body and integrally formed with the shift fork body; the limiting boss is provided with a second limiting groove; the second limiting groove is communicated with the cavity; the elastic column is arranged in the second limiting groove and extends into the first limiting groove.

[0013] Further, the elastic column comprises:

[0014] The fixed part is arranged in the second limiting groove, and a first mounting groove is arranged at one end of the fixed part facing the cavity;

[0015] The elastic part is arranged in the first mounting groove, and one end of the elastic part away from the fixed part extends into the first limiting groove.

[0016] Further, the elastic part comprises:

[0017] The spring is detachably connected to the bottom wall of the first mounting groove;

[0018] The mounting piece is arranged at one end of the spring away from the bottom wall of the first mounting groove, and the mounting piece has a second mounting groove;

[0019] The ball is rotatably connected to the second mounting groove, and the ball abuts against the bottom wall of the first limiting groove.

[0020] Further, the first limiting groove is arranged in the shift fork shaft in a W shape.

[0021] Further, the shift fork body is provided with through holes on opposite sides, the shift fork body is sleeved on the shift fork shaft through the through holes, and the sliding bearing is arranged at a position corresponding to the through hole.

[0022] Further, the shift fork body is further provided with wear-resistant sheets, the wear-resistant sheets are arranged in a plurality of numbers, and each wear-resistant sheet is arranged on the shift fork body by using a press process.

[0023] Further, the driving part is provided with a C-shaped connecting cavity, the axial direction of the C-shaped connecting cavity is consistent with the circumferential direction of the shift fork shaft, and the C-shaped connecting cavity is used for being connected with an external gear lever, so that when the external gear lever is moved, the shift fork is driven to move on the shift fork shaft.

[0024] The above technical solution provided in the application has the following advantages compared with the prior art:

[0025] In the technical solution of the application, the shift fork body, the driving part and the elastic plunger are arranged by using a die-casting integrated forming process, the installation mode of the position sensing magnet is simplified, the number of parts contained in the shift fork is reduced, a plurality of sets of stamping dies do not need to be developed during manufacturing, the manufacturing cost of the shift fork is reduced, and the competitiveness of the product is improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, for those skilled in the field, other drawings can also be obtained based on these drawings without any creative effort.

[0028] One or more embodiments are illustrated by way of example in the drawings that are not intended to be limiting of the embodiments of the present application, as outlined by way of explanation below, and in which like reference numbers indicate similar elements or sections. The drawings of the application comprise the following figures:

[0029] Figure 1 A schematic diagram of an overall structure of a shift fork is provided in the embodiments of the present application;

[0030] Figure 2 A schematic diagram of a cross-sectional view structure is shown in the embodiments of the present application; Figure 1

[0031] A schematic diagram of a left view structure is shown in the embodiments of the present application. Figure 3 Figure 1

[0032] Legend of reference signs:

[0033] Fork shaft 1, first limiting groove 11a, fork body 2, cavity 21a, through hole 22a, driving part 24, C-shaped connecting cavity 24a, elastic plunger 3, elastic column 31, fixing part 311, elastic part 312, mounting part 3121, ball 3122, limiting boss 32, sliding bearing 4, position sensing magnet 5, wear-resistant sheet 6. DETAILED DESCRIPTION

[0034] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0035] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplification, the components and arrangements of specific examples are described in the following. Of course, they are only examples and the purpose is not to limit the present application. In addition, reference numerals and / or letters can be repeated in different examples. Such repetition is for the purpose of simplification and clarity, and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0036] ​​For the convenience of description, spatial relative terms can be used in the specification to describe the relative position relationship or movement condition of one element or feature relative to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "on", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientations depicted in the drawings. For example, if the device in the drawings is turned over or the posture is changed or the movement state is changed, the directional indications will also change accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both up and down positions. The device can be additionally oriented (rotated by 90 degrees or in other directions) and the spatial relative relationship descriptors used in the specification are interpreted accordingly.

[0037] In order to solve the technical problem of too many shift fork parts in the prior art, the application provides a shift fork which can control production cost.

[0038] The first aspect, Figures 1 to 3 A shift fork provided by the embodiment of the application comprises a shift fork shaft 1, a shift fork body 2, an elastic plunger 3, a sliding bearing 4 and a position sensing magnet 5. The shift fork shaft 1 has a first limiting groove 11a. The first limiting groove 11a is arranged on the shift fork shaft 1 along the outer wall of the shift fork shaft 1. The shift fork body 2 is rotatably sleeved on the shift fork shaft 1. The shift fork body 2 comprises a cavity 21a and a driving part 24. The first limiting groove 11a is located in the cavity 21a. The driving part 24 is arranged at the top of the shift fork body 2 and is integrally formed with the shift fork body 2. The elastic plunger 3 has an elastic column 31. The elastic column 31 penetrates the shift fork body 2, and one end of the elastic plunger 3 extends into the first limiting groove 11a. The sliding bearing 4 is sleeved on the shift fork shaft 1 and located between the shift fork shaft 1 and the shift fork body 2. The position sensing magnet 5 is in the shape of a cylinder. The position sensing magnet 5 is detachably connected to the shift fork body 2.

[0039] It can be understood that one end of the shift fork shaft 1 is fixed on the gearbox, and the shift fork shaft 1 cannot rotate relative to the shift fork body 2, which serves as a carrier for installation; the shift fork body is integrally formed by die casting, has the characteristics of light weight, good strength, high precision, and strong structural adjustment flexibility, and can provide suitable installation positions for different functional components; the driving part 24 provided on the shift fork body is different from the structure in the prior art, in which the driving part 24 is independently provided as a separate part, which can ensure the strength of the driving part 24 while integrating it with the shift fork body as a separate part, reducing the number of parts and assembly processes, and effectively achieving the purpose of reducing costs; at the same time, since the elastic plunger 3 is also provided on the shift fork body, it can not only simplify the structure, but also improve the accuracy of the gear shift during gear shifting; the sliding bearing 4 is provided to facilitate smoother rotation of the shift fork body on the shift fork shaft 1; the position sensing magnet 5 is connected to the shift fork body by riveting, which can simplify the installation structure of the position sensing magnet 5 and further save manufacturing costs; and since the position sensing magnet 5 is provided on the shift fork body, the external sensing device can more accurately locate the position of the shift fork body; in this way, by using the die casting integrated forming process to set the shift fork body, the driving part 24 and the elastic plunger 3, and by simplifying the installation method of the position sensing magnet 5, the number of parts included in the gear shift fork can be reduced, and multiple sets of stamping dies do not need to be developed during manufacturing, thereby reducing the manufacturing cost of the gear shift fork and improving the competitiveness of the product.

[0040] As shown in Figures 1 to 3 , the elastic plunger 3 comprises: a limiting boss 24, which is vertically provided on the shift fork body 2 and integrally formed with the shift fork body 2; the limiting boss 24 is provided with a second limiting groove; the second limiting groove is communicated with the cavity 21a; the elastic column 31 is provided in the second limiting groove and extends into the first limiting groove 11a.

[0041] It can be understood that the limiting boss 24 is integrally formed with the shift fork body 2, in order to make the position of the elastic column 31 on the shift fork body 2 more stable and avoid the elastic column 31 from being separated from the shift fork body 2, a limiting boss 24 perpendicular to the shift fork body 2 is provided, and the end of the elastic column 31 away from the cavity 21a is fixedly connected with the limiting boss 24; the provision of the second limiting groove not only provides space for the installation of the elastic column 31, but also limits the orientation of the elastic column 31.

[0042] As shown in Figure 2 , in the technical solution of the present embodiment, the elastic column 31 comprises: a fixed part 311 and an elastic part; the fixed part 311 is provided in the second limiting groove; the fixed part 311 is provided with a first mounting groove at one end facing the cavity 21a; the elastic part is provided in the first mounting groove; the elastic part extends into the first limiting groove 11a at one end away from the fixed part 311

[0043] It can be understood that the fixed part 311 is used to be fixed with the limiting boss 24 to stabilize the position of the elastic column 31; the first mounting groove provides a mounting space for the elastic part, so that the length of the elastic column 31 will not be lengthened because of the setting of the elastic part; the elastic part is the part abutting against the groove bottom wall of the first limiting groove 11a, and has a certain elasticity, so that the elastic part can make the shift fork body 2 rotate or move more smoothly when the shift fork body 2 rotates or moves.

[0044] As shown in Figure 2 , in the technical scheme of the embodiment, the elastic part comprises a spring, a mounting piece and a ball 3122; the spring is detachably connected to the groove bottom wall of the first mounting groove; the mounting piece is arranged at one end of the spring away from the groove bottom wall of the first mounting groove; the mounting piece has a second mounting groove; the ball 3122 is rotatably connected to the second mounting groove; and the ball 3122 abuts against the groove bottom wall of the first limiting groove 11a.

[0045] It can be understood that when the shift fork body 2 rotates or moves, the ball 3122 will roll on the mounting piece, which is beneficial to the smooth rotation or movement; in the process of rotation or movement, the ball 3122 is subjected to extrusion, at which time the spring can well neutralize the extrusion force transmitted, so that the process of rotation or movement is more smooth.

[0046] As shown in Figure 2 , in the technical scheme of the embodiment, the first limiting groove 11a is W-shaped and arranged on the shift fork shaft 1.

[0047] It can be understood that the W-shaped first limiting groove 11a can make the movement track of the shift fork body 2 more suitable for the gear shifting mechanism, and the gear shifting is more smooth.

[0048] As shown in Figures 1 to 3 , in the technical scheme of the embodiment, the shift fork body 2 is provided with through holes 22a at opposite sides; the shift fork body 2 is sleeved on the shift fork shaft 1 through the through holes 22a; and the sliding bearing 4 is arranged at the positions corresponding to the through holes 22a.

[0049] It can be understood that the through holes 22a are arranged to facilitate the sleeve of the shift fork body on the shift fork shaft 1, and also stabilize the position of the sliding bearing 4 on the shift fork shaft 1.

[0050] As shown in Figures 1 to 3 , in the technical scheme of the embodiment, the shift fork body 2 is further provided with wear-resistant sheets 6; the wear-resistant sheets 6 are provided in plurality, and each wear-resistant sheet 6 is arranged on the shift fork body 2 by using a press-fit process.

[0051] It can be understood that the wear plate 6 is pressed on the shifter body by interference, compared with the traditional direct injection on the shifter body, the injection mold is simpler, the material used is less, it is beneficial to mass production and standardization of the wear plate 6, and is applicable to different shifter products; it is beneficial to reduce the product cost.

[0052] As Figures 1 to 3 As shown in the technical scheme of the embodiment, the driving part 24 is provided with a C-shaped connecting cavity 24a; the axial direction of the C-shaped connecting cavity 24a is consistent with the circumferential direction of the shifter shaft 1; the C-shaped connecting cavity 24a is used for connecting with an external gear lever, so as to drive the gear shift fork to move on the shifter shaft 1 when the external gear lever is pushed.

[0053] It can be understood that when the gear shift fork is installed on the gearbox, the gear shift lever on the gearbox is embedded into the C-shaped connecting cavity 24a, so that the shifter body can be moved on the shifter shaft 1 by pushing the gear lever.

[0054] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0055] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0056] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0057] In the present application, unless specifically defined otherwise, the terms "mount", "connected", "connecting", "fixed", "linking", and the like should be construed broadly and can include various forms of connections, such as connection and detachable connection, or integral connection; mechanical connection, or electrical connection; direct connection, or indirect connection via an intermediate medium; internal communication between two elements, or interaction between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.

[0058] In the present application, unless specifically defined otherwise, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Under", "below" and "under" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0059] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0060] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, any modifications and variations of the present application within the scope of the present application are intended to be included in the scope of the claims of the present application and their equivalents.

[0061] The above is a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A shift fork, characterized in that, include: The shift fork shaft (1) has a first limiting groove (11a); the first limiting groove (11a) is circumferentially disposed on the shift fork shaft (1) along the outer wall of the shift fork shaft (1); The shift fork body (2) is rotatably sleeved on the shift fork shaft (1); the shift fork body (2) includes a cavity (21a) and a drive part (24); the first limiting groove (11a) is located in the cavity (21a); ​​the drive part (24) is located on the top of the shift fork body (2) and is integrally formed with the shift fork body (2); The elastic plunger (3) has an elastic post (31); the elastic post (31) passes through the fork body (2), and one end of the elastic plunger (3) extends into the first limiting groove (11a); A sliding bearing (4) is sleeved on the shift fork shaft (1) and located between the shift fork shaft (1) and the shift fork body (2); The position sensing magnet (5) is cylindrical in shape; the position sensing magnet (5) is detachably connected to the shift fork body (2).

2. The shift fork according to claim 1, characterized in that, The elastic plunger (3) includes: a limiting boss (24), which is vertically disposed on the shift fork body (2) and integrally formed with the shift fork body (2); the limiting boss (24) is provided with a second limiting groove; the second limiting groove is connected to the cavity (21a); ​​the elastic plunger (31) is disposed in the second limiting groove and extends into the first limiting groove (11a).

3. The shift fork according to claim 1, characterized in that, The elastic column (31) includes: A fixing part (311) is provided in the second limiting groove; the fixing part (311) is provided with a first mounting groove at one end facing the cavity (21a); An elastic part is provided in the first mounting groove; the end of the elastic part away from the fixed part (311) extends into the first limiting groove (11a).

4. The shift fork according to claim 3, characterized in that, The elastic portion includes: A spring is detachably connected to the bottom wall of the first mounting slot; A mounting component is provided at the end of the spring that is away from the bottom wall of the first mounting groove; the mounting component has a second mounting groove. A ball bearing (3122) is rotatably connected to the second mounting groove; the ball bearing (3122) abuts against the bottom wall of the first limiting groove (11a).

5. The shift fork according to claim 4, characterized in that, The first limiting groove (11a) is W-shaped and located on the shift fork shaft (1).

6. The shift fork according to claim 1, characterized in that, The shift fork body (2) has through holes (22a) on both sides opposite to each other; the shift fork body (2) is sleeved on the shift fork shaft (1) through the through holes (22a); the sliding bearing (4) is located at the corresponding through hole (22a).

7. The shift fork according to claim 1, characterized in that, The shift fork body (2) is also provided with wear-resistant plates (6); there are multiple wear-resistant plates (6), and each wear-resistant plate (6) is provided on the shift fork body (2) by an injection molding process.

8. The shift fork according to claim 1, characterized in that, The drive unit (24) is provided with a C-shaped connecting cavity (24a); the axial direction of the C-shaped connecting cavity (24a) is consistent with the circumferential direction of the shift fork shaft (1); the C-shaped connecting cavity (24a) is used to connect with an external gear lever so that when the external gear lever is moved, the shift fork is driven to move on the shift fork shaft (1).

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