A gear positioning structure and a vehicle

Abstract

The present invention provides a gear positioning structure and a vehicle, the gear positioning structure includes a housing and a first gear, a protrusion is fixedly provided on the housing; at least three elastic buckles are fixedly provided on the housing along the circumferential direction of the first gear, the elastic buckle includes an elastic part extending outward from the housing and a buckle part fixedly provided at one end of the elastic part away from the housing; the first gear is installed between the elastic buckles, the first end face of the first gear abuts against the protrusion, the second end face of the first gear abuts against the buckle part, the first gear is clamped between the protrusion and the buckle part, and the axial positioning of the first gear is achieved by the protrusion and the buckle part. After adopting the above technical solution, the gear positioning structure is simplified, the production cost is reduced, and it is convenient to adjust the pressing elastic force of the gear end face.

Description

Technical Field

[0001] The present invention relates to the technical field of positioning structures, and in particular to a gear positioning structure and a vehicle. Background Art

[0002] See attached Figure 1 , 2 In the prior art, the axial positioning structure of the Hall gear (i.e., the first gear 200) of the angle torque sensor on the vehicle includes a housing 100, a Hall gear (i.e., the first gear 200) and a cover plate 400. The cover plate 400 is connected to the housing 100 by a snap-fit ​​structure to clamp the Hall gear 200 therebetween. The cover plate 400 is also provided with a twisting structure 410 to press the Hall gear 200 toward the housing 100 so that the Hall gear 200 is axially (i.e., Figure 1 The upper and lower directions in the figure) are positioned between the shell 100 and the cover plate 400.

[0003] The gear axial positioning structure of the prior art needs to transmit pressure through a separate part, the cover plate, which is relatively costly. In addition, in the prior art, if the clamping force of the gear end face needs to be adjusted in different devices, the twisting structure needs to be redesigned, which is relatively complicated and inconvenient to adjust the gear clamping force.

[0004] Therefore, it is necessary to develop a gear positioning structure which has a simple structure, low cost and is convenient for adjusting the gear pressing force. Summary of the invention

[0005] In order to overcome the above technical defects, the object of the present invention is to provide a gear positioning structure with simple structure, low cost and convenient adjustment of gear clamping force, and a vehicle having the gear positioning structure.

[0006] The present invention discloses a gear positioning structure, comprising a housing and a first gear, wherein a protrusion is fixedly arranged on the housing;

[0007] At least three elastic buckles are fixedly arranged on the housing along the circumferential direction of the first gear, and the elastic buckles include an elastic portion extending outward from the housing and a buckle portion fixedly arranged at one end of the elastic portion away from the housing;

[0008] The first gear is installed between the elastic clips, the first end face of the first gear abuts against the protrusion, the second end face of the first gear abuts against the clip, the first gear is clamped between the protrusion and the clip, and the axial positioning of the first gear is achieved by the protrusion and the clip.

[0009] Preferably, the first gear comprises a first gear body and a cylindrical boss located at a first end surface of the first gear and coaxial with the first gear body, wherein a side of the cylindrical boss away from the first gear body abuts against the protrusion;

[0010] A circumferential side wall matching the arc-shaped side shape of the cylindrical boss is arranged between the elastic buckles on the shell, and the circumferential side wall and the shell form a accommodating space. When the first gear is clamped between the protruding portion and the buckle portion, the cylindrical boss is located in the accommodating space, and radial positioning of the first gear is achieved by the circumferential side wall and the cylindrical boss.

[0011] Preferably, a protrusion is provided at one end of the circumferential side wall away from the housing;

[0012] A groove portion matching the shape of the protrusion is provided at a position corresponding to the protrusion on a side of the first gear facing the housing;

[0013] When the first gear is clamped between the protruding portion and the snap portion, the protruding portion is embedded in the groove portion.

[0014] Preferably, the first gear meshes with a second gear, and the second gear is fixedly sleeved on a rotating shaft;

[0015] The first gear is a Hall gear of an angle torque sensor, and a magnetic part is provided on the first gear;

[0016] A first magnetic induction component is arranged on the rotating shaft;

[0017] An angle torque sensor PCB is arranged on the shell, a second magnetic induction component is arranged on the angle torque sensor PCB, the magnetic part forms magnetic induction with the first magnetic induction component, and the angle torque sensor PCB is used to obtain the rotation angle and torque of the rotating shaft by sensing the magnetic field change of the first magnetic induction component through the second magnetic induction component.

[0018] Preferably, a plane portion is fixedly provided on the second end surface of the first gear, and the plane portion is located between the gear teeth of the first gear and the buckle portion.

[0019] Preferably, the protrusion is hemispherical, and the protrusion corresponds to the center position of the first gear.

[0020] Preferably, the elastic buckles are arranged in an array along the circumferential direction of the first gear.

[0021] Preferably, the side surfaces of the elastic portion and the abutting portion facing the central axis of the first gear are arc surfaces matching the shape of the gear.

[0022] Preferably, the diameter of the circle where the side surface of the elastic portion faces the central axis of the first gear is greater than the diameter of the tooth top circle of the first gear;

[0023] The width of the buckle portion in the radial direction of the first gear gradually increases from an end away from the housing to an end close to the housing;

[0024] The diameter of the circle where the edge of the buckle portion at one end away from the shell toward the side of the central axis of the first gear is located is greater than or equal to the diameter of the top circle of the first gear, and the diameter of the circle where the edge of the buckle portion at one end close to the shell toward the side of the central axis of the first gear is located is less than the diameter of the top circle of the first gear.

[0025] The present invention also discloses a vehicle, which comprises the gear positioning structure.

[0026] Compared with the prior art, the above technical solution has the following beneficial effects:

[0027] 1. The cover plate is cancelled, the gear positioning structure is simplified, and the production cost is reduced;

[0028] 2. The gear positioning structure can adjust the pressing force on the gear by adjusting the height of the protrusion, and the adjustment of the gear pressing force is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a gear axial positioning structure in the prior art;

[0030] Figure 2 for Figure 1 Schematic diagram of the structure of the middle cover;

[0031] Figure 3 A schematic diagram of a gear positioning structure in one embodiment of the present invention;

[0032] Figure 4 for Figure 3 A schematic diagram of the structure of the middle shell;

[0033] Figure 5 for Figure 3 A schematic structural diagram of a first end surface of a first gear;

[0034] Figure 6 for Figure 3 Schematic diagram of the structure of the second end face of the first gear.

[0035] Reference numerals:

[0036] 100-housing, 110-protruding portion, 120-elastic buckle, 121-elastic portion, 122-buckle portion, 130-circumferential side wall, 131-protruding portion, 200-first gear, 210-first gear body, 220-cylindrical boss, 230-groove portion, 240-planar portion, 300-second gear, 400-cover plate, 410-twisted structure, 500-rotating shaft, 600-angle torque sensor PCB, 700-upper cover plate. DETAILED DESCRIPTION

[0037] The advantages of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0039] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0040] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0041] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention.

[0042] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0043] In the following description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present invention, and have no specific meanings. Therefore, "module" and "component" can be used interchangeably.

[0044] See attached Figure 3-6 The gear positioning structure of this embodiment includes a housing 100 and a first gear 200 .

[0045] A protrusion 110 is fixedly provided on the housing 100, and the protrusion 110 protrudes from the surface of the housing 100. In this embodiment, the protrusion 110 is hemispherical, and the top of the hemispherical arc surface is used to fit with the first side surface of the first gear 200. Preferably, the top of the arc surface of the hemispherical protrusion 110 has a small plane to better fit with the first side surface of the first gear 200. The protrusion 110 corresponds to the center position of the first gear 200.

[0046] At least three elastic buckles 120 are fixedly arranged on the housing 100 along the circumferential direction of the first gear 200. Preferably, the elastic buckles 120 are arranged in an array along the circumferential direction of the first gear 200. In this embodiment, six elastic buckles 120 are arranged, two in a group, and three groups of elastic buckles 120 are arranged in an array in the circumferential direction of the first gear 200. The elastic buckle 120 includes an elastic portion 121 extending outward from the housing 100 and a buckle portion 122 fixedly arranged at one end of the elastic portion 121 away from the housing 100. Preferably, the housing 100, the elastic portion 121 and the buckle portion 122 are integrally formed.

[0047] The first gear 200 is installed between the elastic buckles 120, the first end face of the first gear 200 abuts against the protrusion 110, the second end face of the first gear 200 abuts against the buckle 122, the first gear 200 is clamped between the protrusion 110 and the buckle 122, and the axial positioning of the first gear 200 is achieved by the protrusion 110 and the buckle 122. The abutment mentioned here can refer to direct contact or approximate contact, that is, not direct contact, but the distance between the two is very small. For details, see the attached Figure 3, the first gear 200 moves from a direction away from the housing 100 toward the housing 100 and is installed between the elastic buckles 120, that is, the first gear 200 moves from a direction away from the housing 100 toward the housing 100. Figure 3 The first gear 200 is moved upward from bottom to top and installed between the elastic buckles 120. During the installation process, the first gear 200 squeezes the buckle portion 122, causing the elastic portion 121 to deform, driving the buckle portion 122 to move in a direction away from the central axis of the first gear 200 until the first end face of the first gear 200 abuts against the protruding portion 110. At this time, the elastic portion 121 recovers its deformation, driving the buckle portion 122 to move in the direction of the central axis of the first gear 200, and the buckle portion 122 abuts against the second end face of the first gear 200 toward one side of the housing 100. The buckle portion 122 completely restricts the movement of the first gear 200 in the direction away from the housing 100, so that the first gear 200 achieves axial ( Figure 3 Positioning in the middle and upper directions.

[0048] The first gear 200 includes a first gear body 210 and a cylindrical boss 220 located at the first end face of the first gear 200 and coaxial with the first gear body 210, and the side of the cylindrical boss 220 away from the first gear body 210 abuts against the protrusion 110; a circumferential side wall 130 matching the arc-shaped side shape of the cylindrical boss 220 is provided between the elastic buckles 120 on the shell 100, and the circumferential side wall 130 and the shell 100 form a accommodating space, and when the first gear 200 is clamped between the protrusion 110 and the buckle portion 122, the cylindrical boss 220 is located in the accommodating space, and its radial displacement is limited, and the radial (i.e., circumferential) positioning of the first gear 200 is achieved by the circumferential side wall 130 and the cylindrical boss. The circumferential side wall 130 may be a complete circumferential side wall 130, or may be several sections of side walls arranged at intervals in the circumferential direction of the cylindrical boss 220, as long as it can limit the displacement of the circumferential boss (i.e., the first gear 200) in the radial direction (i.e., the circumferential direction). Preferably, a protrusion 131 is provided at one end of the circumferential side wall 130 away from the housing 100; a groove 230 matching the shape of the protrusion 131 is provided at a position corresponding to the protrusion 131 on the side of the first gear 200 facing the housing 100; when the first gear 200 is clamped between the protrusion 110 and the buckle 122, the protrusion 131 is embedded in the groove 230, further realizing the radial positioning of the first gear 200. Preferably, a flat surface 240 is fixedly provided on the second end surface of the first gear 200, and the flat surface 240 is located between the gear teeth of the first gear 200 and the buckle 122. The first gear 200 is fitted with the side of the buckle portion 122 facing the housing 100 through the plane portion 240 to prevent the buckle portion 122 from contacting the gear teeth, which helps to reduce the friction resistance when the first gear 200 rotates. Preferably, the fitting surfaces of the plane portion 240 and the buckle portion 122 are polished to further reduce the friction resistance.

[0049] The first gear 200 is a Hall gear of the angle torque sensor. The first gear 200 is provided with a magnetic part, such as a magnet. The first gear 200 meshes with the second gear 300, and the second gear 300 is fixedly sleeved on the rotating shaft 500. When the rotating shaft 500 rotates, the second gear 300 rotates synchronously, and the rotation of the second gear 300 drives the first gear 200 to rotate. The rotating shaft 500 is provided with a first magnetic induction component, such as a magnetic roll sheet, and the magnetic part forms magnetic induction with the first magnetic induction component. The housing 100 is provided with an angle torque sensor PCB600, and the angle torque sensor PCB600 is provided with a calculation processing module and a second magnetic induction module. The second magnetic induction module can be a Hall element. The angle torque sensor PCB obtains the rotation angle and torque of the rotating shaft 500 by sensing the magnetic field change of the first magnetic induction component through the second magnetic induction component based on the Hall effect. Its specific principles and calculation methods are all existing technologies and will not be elaborated in detail here. An upper cover plate 700 is also fixedly arranged above the shell, and is arranged above the shell 100. The angle torque sensor PCB600 is located between the upper cover plate 700 and the shell 100. The upper cover plate 700 is used to prevent water or dust from entering the interior of the shell, and to protect the components on the shell, such as the angle torque sensor PCB600.

[0050] Preferably, in this embodiment, the side surfaces of the elastic portion 121 and the abutting portion facing the central axis of the first gear 200 are arc surfaces matching the gear shape. The diameter of the circle where the side surface of the elastic portion 121 facing the central axis of the first gear 200 is located is greater than the diameter of the tooth top circle of the first gear 200. The width of the buckle portion 122 in the radial direction of the first gear 200 gradually increases from the end away from the housing 100 to the end close to the housing 100; the diameter of the circle where the edge of the end of the buckle portion 122 away from the housing 100 facing the central axis of the first gear 200 is located is greater than or equal to the diameter of the tooth top circle of the first gear 200, and the diameter of the circle where the edge of the end of the buckle portion 122 close to the housing 100 facing the central axis of the first gear 200 is located is less than the diameter of the tooth top circle of the first gear 200. With such a design, when the first gear 200 is installed, the buckle portion 122 can be squeezed to deform the elastic portion 121, thereby driving the buckle portion 122 to move in a direction away from the central axis of the first gear 200, so that the first gear 200 is installed between the elastic buckles 120. Moreover, when the first gear 200 is installed in place, the elastic portion 121 is deformed and restored, thereby driving the buckle portion 122 to move in the direction of the central axis of the first gear 200, and the buckle portion 122 abuts against the second end face of the first gear 200 toward one side of the shell 100.

[0051] The gear positioning structure of the present embodiment eliminates the cover plate, simplifies the structure, and significantly reduces the production cost; and the gear positioning structure of the present embodiment is easy to change the boss height on the mold, so that the solution of the present application can conveniently adjust the clamping force on the first gear, so that the gear positioning structure meets the design requirements of different scenarios.

[0052] The present invention further provides a vehicle, on which the gear positioning structure in the above embodiment is provided.

[0053] It should be noted that the embodiments of the present invention have better practicability and do not impose any form of limitation on the present invention. Any technician familiar with the field may use the technical content disclosed above to change or modify it into an equivalent effective embodiment. However, any modification or equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A gear positioning structure, comprising a housing and a first gear, characterized in that: A protrusion is fixedly provided on the shell; At least three elastic buckles are fixedly arranged on the housing along the circumferential direction of the first gear, and the elastic buckles include an elastic portion extending outward from the housing and a buckle portion fixedly arranged at one end of the elastic portion away from the housing; The first gear is installed between the elastic buckles, the first end face of the first gear abuts against the protrusion, the second end face of the first gear abuts against the buckle, the first gear is clamped between the protrusion and the buckle, and the axial positioning of the first gear is achieved by the protrusion and the buckle; The first gear comprises a first gear body and a cylindrical boss located at a first end surface of the first gear and coaxial with the first gear body, wherein a side of the cylindrical boss away from the first gear body abuts against the protrusion; A circumferential side wall matching the arc-shaped side surface of the cylindrical boss is provided between the elastic buckles on the housing, and the circumferential side wall and the housing form a receiving space. When the first gear is clamped between the protruding portion and the buckle portion, the cylindrical boss is located in the receiving space, and the radial positioning of the first gear is achieved by the circumferential side wall and the cylindrical boss; A protrusion is provided at one end of the circumferential side wall away from the shell; A groove portion matching the shape of the protrusion is provided at a position corresponding to the protrusion on a side of the first gear facing the housing; When the first gear is clamped between the protruding portion and the buckling portion, the protruding portion is embedded in the groove portion; The first gear is meshed with a second gear, and the second gear is fixedly sleeved on a rotating shaft; The first gear is a Hall gear of an angle torque sensor, and a magnetic part is provided on the first gear; A first magnetic induction component is arranged on the rotating shaft; An angle torque sensor PCB is arranged on the shell, a second magnetic induction component is arranged on the angle torque sensor PCB, the magnetic part forms magnetic induction with the first magnetic induction component, and the angle torque sensor PCB is used to obtain the rotation angle and torque of the rotating shaft by sensing the magnetic field change of the first magnetic induction component through the second magnetic induction component.

2. The gear positioning structure according to claim 1, characterized in that: A plane portion is fixedly disposed on the second end surface of the first gear, and the plane portion is located between the gear teeth of the first gear and the buckle portion.

3. The gear positioning structure according to claim 1, characterized in that: The protrusion is hemispherical and corresponds to the center position of the first gear.

4. The gear positioning structure according to claim 1, characterized in that: The elastic buckles are arranged in an array along the circumferential direction of the first gear.

5. The gear positioning structure according to claim 1, characterized in that: The side surfaces of the elastic portion and the buckle portion facing the central axis of the first gear are arc surfaces matching the shape of the gear.

6. The gear positioning structure according to claim 5, characterized in that: The diameter of the circle where the side surface of the elastic portion facing the central axis of the first gear lies is greater than the diameter of the tooth tip circle of the first gear; The width of the buckle portion in the radial direction of the first gear gradually increases from an end away from the housing to an end close to the housing; The diameter of the circle where the edge of the buckle portion at one end away from the shell toward the side of the central axis of the first gear is located is greater than or equal to the diameter of the top circle of the first gear, and the diameter of the circle where the edge of the buckle portion at one end close to the shell toward the side of the central axis of the first gear is located is less than the diameter of the top circle of the first gear.

7. A vehicle, characterized in that: It comprises the gear positioning structure as claimed in any one of claims 1 to 6.

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