Driving mode switching mechanism and all-terrain vehicle

Abstract

The utility model discloses a driving mode switching mechanism. The driving mode switching mechanism comprises a shell; the guide connection assembly is arranged on the shell, and the spline shifting sleeve is installed on the guide connection assembly in a sliding mode; the sliding control piece is installed on the shell in a sliding mode; the elastic torsion spring is provided with two torsion arms; the driving piece and the driven piece are both rotationally installed on the shell, the driving piece is provided with driving force application parts, the driven piece is provided with driven force bearing parts, all the driving force application parts and the corresponding driven force bearing parts are located on the same side of the corresponding torsion arms, the driven piece is provided with a second linkage part, and the second linkage part is matched with the sliding control piece. Rotation of one torsion arm of the elastic torsion spring is driven through rotation of the driving part, the driven part is driven to rotate through the other torsion arm, and the driven part drives the sliding control part to slide so that mode switching can be achieved.

Description

Technical Field

[0001] The utility model belongs to the field of all-terrain vehicles, and in particular relates to a driving mode switching mechanism and an all-terrain vehicle. Background Art

[0002] An all-terrain vehicle is a vehicle that can travel on any terrain and can move freely on terrain where ordinary vehicles have difficulty maneuvering.

[0003] ATVs have multiple modes such as two-wheel drive and four-wheel drive, so that different modes can better adapt to different terrains. The drive mode switching mechanism is an adaptive structure of the ATV. Its principle can refer to the ATV and its two-wheel drive and four-wheel drive switching protection device disclosed in Chinese Patent No. CN202020014363.1. The bridge motor drives the eccentric rocker to rotate the rocker arm, so that the first spring wire and the second spring wire on the rocker arm follow the rotation, so that the toggle block between the first spring wire and the second spring wire is forced to slide the guide block, and finally the meshing position adjustment of the spline sleeve and the half-shaft gear is completed, so as to realize the switching of the ATV drive mode.

[0004] However, the above structure directly drives the sliding toggle block by rotating the first spring wire and the second spring wire. Since the first spring wire and the second spring wire are both elastic parts, and in order to adapt to the sliding stroke of the guide block, the lengths of the first spring wire and the second spring wire are relatively long. Therefore, during the driving process, the first spring wire and the second spring wire are subjected to a larger bending moment at the contact position between the first spring wire and the second spring wire and the toggle block, and are more susceptible to irreversible bending, which increases the distance between the first spring wire and the second spring wire and fails to effectively limit the guide block, resulting in the stability of the spline sleeve being affected. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a drive mode switching mechanism, which uses the rotation of an active member to drive the rotation of a torsion arm of an elastic torsion spring, and drives the driven member to rotate through another torsion arm, and realizes the mode switching by driving the sliding control member to slide through the driven member.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising: a shell; a guide assembly and a spline sleeve, the guide assembly is arranged on the shell, and the spline sleeve is slidably installed on the guide assembly; a sliding control member, which is used to control the sliding of the spline sleeve, and the sliding control member is slidably installed on the shell; an elastic torsion spring, the elastic torsion spring is provided with two torsion arms; an active member and a driven member, the active member and the driven member are rotatably installed on the shell, the active member is respectively provided with an active force-applying part corresponding to each torsion arm, and the driven member is respectively provided with a driven force-receiving part corresponding to each torsion arm, each of the active force-applying parts and the corresponding driven force-receiving part are located on the same side of the corresponding torsion arm, the driven member is provided with a second linkage part, the second linkage part cooperates with the sliding control member so that the rotation of the driven member drives the sliding of the sliding control member; the active member rotates so that one of the active force-applying parts moves toward the corresponding torsion arm, and the other active force-applying part moves away from the corresponding torsion arm.

[0007] The utility model is further configured as follows: each of the active force-applying parts and the driven force-receiving part is located between two torsion arms; or each of the active force-applying parts and the corresponding driven force-receiving part is located on a side of the corresponding torsion arm away from the other torsion arm.

[0008] The utility model is further configured as follows: a mounting column is arranged on the shell, the active member, the elastic torsion spring and the driven member are sequentially sleeved on the outer circumference of the mounting column, and the active member and the driven member are both rotatably mounted on the mounting column.

[0009] The utility model is further configured as follows: two torsion arms are arranged radially along the mounting column, the active member is provided with a first clamping portion, the driven member is provided with a second clamping portion, and the first clamping portion and the second clamping portion are located at both ends of the two torsion arms along the axial direction of the mounting column.

[0010] The utility model is further configured as follows: it also includes an input shaft rotatably mounted on the shell, one axial end of the input shaft is provided with a first linkage slide rail extending radially, and the active member is provided with a first linkage slider slidingly matched in the first linkage slide rail.

[0011] The utility model is further configured as follows: a plurality of signal contacts are arranged on the housing, a signal member is arranged on the driven member, and each signal contact is located on the motion track of the signal member.

[0012] The utility model is further configured as follows: the guide assembly includes a power shaft, a differential seat, differential teeth, a first output member, a second output member and a linkage member, the power shaft, the differential seat and the linkage member are all rotatably mounted on the housing, the power shaft is engaged with the differential seat so that the power shaft rotates to drive the differential seat to rotate, the first output member, the second output member and the differential teeth are rotatably mounted on the differential seat, and the differential teeth respectively engage the first output member and the second output member to perform linkage, the spline sleeve is sleeved on the outer periphery of the linkage member, and the inner periphery of the spline sleeve is provided with an inner flower portion, an outer flower portion, and an outer flower portion. An outer flower portion is arranged on the periphery of the linkage member, a first matching flower portion matching with the inner flower portion is arranged on the outer periphery of the second output member, a second matching flower portion matching with the inner flower portion is arranged on the outer periphery of the second output member, the differential seat is provided with a locking socket for inserting the spline sleeve, and a third matching flower portion matching with the outer flower portion is arranged on the inner periphery of the locking socket. When the inner flower portion matches with the second matching flower portion, the second output member and the linkage member are in a synchronous rotation state. When the inner flower portion matches with the third matching flower portion, the differential seat, the second output member and the linkage member are in a synchronous rotation state.

[0013] The utility model is further configured as follows: a sliding guide rod is arranged in the shell, and the sliding control component is sleeved on the outer periphery of the sliding guide rod and slides along the axial direction of the sliding guide rod.

[0014] By adopting the above technical solution, 1. The rotation of the active member (forward or reverse) causes one of the active force-applying parts to rotate and act on the corresponding torsion arm, so that the torsion arm rotates synchronously. Correspondingly, the torsion arm also moves away from the corresponding driven force-bearing part, and the other active force-applying part rotates synchronously and moves away from the corresponding torsion arm. In the early stage of rotation, the force generated is small, which increases the elastic potential energy of the elastic torsion spring. After the elastic potential energy reaches a certain level, the other torsion arm will drive the corresponding driven force-bearing part to rotate the driven member. Under the rotation of the driven member, the spline sleeve is driven by the second linkage part to complete the mode switching. 2. The elastic torsion spring makes the active member rotate (forward or reverse) and the active force-applying part rotate (forward or reverse) and the active force-applying part rotates (forward or reverse) and acts on the corresponding torsion arm, so that the torsion arm rotates synchronously. The active member and the driven member are elastically connected so that when the guide assembly and the spline sleeve are stuck and the sliding is not smooth or cannot slide, the active member can be forced to rotate and then automatically reset to prevent the active member from being damaged by excessive force due to forced movement. 3. The elastic torsion spring is only used to connect the active member and the driven member that are both rotating. Therefore, the torsion of the elastic torsion spring is adapted to the rotation of the active member and the driven member, so that the torsion arm of the elastic torsion spring only needs to be set to an appropriate length to achieve the connection between the active member and the driven member, so that the length of the torsion arm does not need to be too long to prevent the torsion arm from being bent during the length process and causing irreversible bending, thereby ensuring the service life of the elastic torsion spring to ensure stable driving of the spline sleeve.

[0015] An all-terrain vehicle comprises the above-mentioned driving mode switching mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is an assembly diagram of the first embodiment of the utility model;

[0018] Figure 2 This is an assembly diagram of the first embodiment of the utility model with part of the housing removed;

[0019] Figure 3 It is an assembly diagram of a part of the structure of the embodiment of the utility model;

[0020] Figure 4 An exploded view of a part of the structure of an embodiment of the utility model;

[0021] Figure 5 An exploded view of a part of the structure of an embodiment of the utility model;

[0022] Figure 6 It is a cross-sectional view of the first embodiment of the utility model;

[0023] Figure 7 A state diagram that is part of an embodiment of the present utility model;

[0024] Figure 8 A state diagram that is part of an embodiment of the present utility model;

[0025] Fig. 9 A state diagram that is part of an embodiment of the present utility model;

[0026] Fig.10 It is an assembly diagram of a part of the structure of an embodiment of the utility model.

[0027] Label: 1. Shell;

[0028] 11. Sliding guide rod; 12. Mounting column; 13. Input shaft; 14. Signal contact;

[0029] 121, outer convex ring portion; 131, first linkage slide rail;

[0030] 2. Conducting components;

[0031] 21. Power shaft; 22. Differential seat; 23. Differential gear; 24. First output member; 25. Second output member; 26. Linkage member;

[0032] 221, locking socket; 222, third matching flower portion; 251, second matching flower portion; 261, first matching flower portion;

[0033] 3. Spline bushing;

[0034] 31. arc groove; 32. inner flower part; 33. outer flower part;

[0035] 4. Slip control parts;

[0036] 41. second linkage slider; 42. shift fork; 43. arc segment;

[0037] 5. Elastic torsion spring;

[0038] 51. Twist arm; 52. Translocation segment;

[0039] 6. Active parts;

[0040] 61. Active force applying part; 62. First clamping part; 63. First linkage sliding block;

[0041] 7. Follower;

[0042] 71. driven force-bearing part; 72. second clamping part; 73. second linkage part; 74. signal member;

[0043] 731. Second linkage slide rail. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of protection claimed by the present invention, the present invention is described in detail below with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementation methods of the present invention, which are only part of the embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention. The conventional selections and substitutions made by those skilled in the art under the guidance of the present invention shall be deemed to be within the scope of protection claimed by the present invention.

[0045] Embodiment 1:

[0046] like Figure 1-Figure 10 As shown, the utility model discloses a driving mode switching mechanism, comprising:

[0047] A housing 1, wherein a chamber is provided in the housing 1 for installation;

[0048] The guide assembly 2 and the spline sleeve 3 are arranged in the housing 1, and the spline sleeve 3 is slidably installed on the guide assembly 2, so that the spline sleeve 3 is located at different positions of the guide assembly 2 to realize different modes, mainly including a dual-drive mode, a four-drive mode and a differential lock mode;

[0049] A sliding control member 4, which is used to control the sliding of the spline sleeve 3, and the sliding control member 4 is slidingly installed in the housing 1, and the sliding direction is the same as the sliding direction of the spline sleeve 3;

[0050] An elastic torsion spring 5, wherein the elastic torsion spring 5 is provided with two torsion arms 51;

[0051] The active member 6 and the driven member 7 are both rotatably mounted in the housing 1, and the axial direction of rotation is perpendicular to the sliding direction of the sliding control member 4. The active member 6 is respectively provided with an active force-applying portion 61 corresponding to each torsion arm 51, and the driven member 7 is respectively provided with a driven force-receiving portion 71 corresponding to each torsion arm 51. Each active force-applying portion 61 and the corresponding driven force-receiving portion 71 are located on the same side of the corresponding torsion arm 51. In addition, the driven member 7 is provided with a second linkage portion 73, and the second linkage portion 73 cooperates with the sliding control member 4 so that the rotation of the driven member 7 drives the sliding of the sliding control member 4.

[0052] The active member 6 rotates forward so that one of the active force applying parts 61 moves toward the corresponding torsion arm 51 , while the other active force applying part 61 moves away from the corresponding torsion arm 51 . Similarly, the corresponding relationship is reversed in the reverse rotation.

[0053] Therefore, 1. The rotation (forward or reverse) of the active member 6 causes one of the active force-applying parts 61 to rotate and act on the corresponding torsion arm 51, causing the torsion arm 51 to rotate synchronously. Correspondingly, the torsion arm 51 is also away from the corresponding driven force-bearing part 71, and the other active force-applying part 61 rotates synchronously and away from the corresponding torsion arm 51. In the early stage of rotation, the force generated is small, which increases the elastic potential energy of the elastic torsion spring 5. After the elastic potential energy reaches a certain level, the other torsion arm 51 drives the corresponding driven force-bearing part 71 to rotate the driven member 7. When the driven member 7 rotates, the second linkage part 73 is used to slide the spline sleeve 3 to complete the mode switching. 2. The elastic torsion spring 5 causes the active member 6 to rotate. It is elastically connected to the driven member 7 so that when the guide assembly 2 and the spline sleeve 3 are stuck and the sliding is not smooth or cannot be slid, the active member 6 can be forced to rotate and then automatically reset to prevent the active member 6 from being damaged by forced movement due to excessive force. 3. The elastic torsion spring 5 is only used to connect the active member 6 and the driven member 7 that are both rotating. Therefore, the torsion of the elastic torsion spring 5 is adapted to the rotation of the active member 6 and the driven member 7, so that the torsion arm 51 of the elastic torsion spring 5 only needs to be set to an appropriate length to achieve the connection between the active member 6 and the driven member 7, so that the length of the torsion arm 51 does not need to be too long, so as to prevent the torsion arm 51 from being bent during the length process and causing irreversible bending, thereby ensuring the service life of the elastic torsion spring 5 to ensure stable driving of the spline sleeve 3.

[0054] Specifically, in the present embodiment, a second linkage rail 731 of long strip is arranged on the second linkage part 73, and one end of the length of the second linkage rail 731 points to the rotation axis of the follower 7. Correspondingly, a second linkage slider 41 is arranged on the sliding control member 4. When the second linkage slider 41 slides in the second linkage rail 731, the sliding control member 4 can be driven to slide under the rotation of the follower 7.

[0055] Specifically, a sliding guide rod 11 is disposed in the housing 1 in this embodiment, and the sliding control member 4 is sleeved on the outer periphery of the sliding guide rod 11 and slides along the axial direction of the sliding guide rod 11 .

[0056] Specifically, in this embodiment, a shift fork 42 is provided on the sliding control member 4, so that the shift fork 42 is inserted into the sliding control member 4 and is fixed relative to the sliding control member 4 by the sliding guide rod 11, and an arc segment 43 is provided at the lower end of the shift fork 42. Correspondingly, an arc groove 31 is provided on the outer periphery of the spline sleeve 3, so that the arc segment 43 is inserted into the arc groove 31 to limit the axial position of the two, and the spline sleeve 3 can rotate relative to the shift fork 42.

[0057] Among them, each of the active force-applying parts 61 and the corresponding driven force-bearing parts 71 in this embodiment is located on the side of the corresponding torsion arm 51 away from the other torsion arm 51, so that the two torsion arms 51 are simultaneously limited between the two active force-applying parts 61 and the two driven force-bearing parts 71, and the requirements for the elastic torsion spring 5 are lower. It is only required that the spacing between the two torsion arms 51 is greater than or equal to the spacing between the two active force-applying parts 61 and the spacing between the two driven force-bearing parts 71. After installation, the torsion arms 51 are brought together so that the elastic torsion spring 5 can store elastic potential energy.

[0058] Preferably, a mounting column 12 is provided on the shell 1 in this embodiment, and the active member 6, elastic torsion spring 5, and driven member 7 are sequentially sleeved on the outer periphery of the mounting column 12, and the active member 6 and driven member 7 are both rotatably installed on the mounting column 12, so that the structure is simpler, the active member 6 and driven member 7 rotate more smoothly, and the elastic torsion spring 5 is installed more stably.

[0059] Specifically, the mounting column 12 in this embodiment is fixedly mounted on the shell 1 by means of bolts, and an outer convex ring portion 121 is provided at the end of the mounting column 12 facing away from the shell 1, so that the active part 6, the elastic torsion spring 5, and the driven part 7 can be prevented from falling off and limited by the shell 1 and the outer convex ring portion 121.

[0060] Preferably, a displacement section 52 is provided between one of the torsion arms 51 and the elastic torsion spring 5 in this embodiment, so that the two torsion arms 51 are arranged radially along the mounting column 12, making the structure more orderly. In addition, the active member 6 is provided with a first plate-shaped clamping portion 62, and the driven member 7 is provided with a second plate-shaped clamping portion 72. The first clamping portion 62 and the second clamping portion 72 are located at both ends of the two torsion arms 51 along the axial direction of the mounting column 12, so that the two torsion arms 51 are clamped by the first clamping portion 62 and the second clamping portion 72, so that the active force-applying portion 61 is directly integrated with the first clamping portion 62 to make the volume smaller and the structure more simple, and the driven force-receiving portion 71 is directly integrated with the second clamping portion 72 to make the volume smaller and the structure more simple.

[0061] In addition, the present embodiment also includes an input shaft 13 rotatably mounted on the housing 1, and one axial end of the input shaft 13 is provided with a first linkage rail 131 extending radially by means of a slot. Correspondingly, the active member 6 is clamped with a first linkage slider 63 that is slidably engaged in the first linkage rail 131. Therefore, the rotation of the input shaft 13 realizes the rotation of the active member 6 through the cooperation of the first linkage rail 131 and the first linkage slider 63, so that the input shaft 13 can be rotated at a larger rotation angle to rotate the active member 6 within a smaller range, thereby making the control more precise.

[0062] The input shaft 13 can be driven manually or connected to a servo motor for circuit control driving. In this embodiment, the input shaft 13 is connected to a servo motor, which is not shown in the figure.

[0063] In addition, three signal contacts 14 are arranged on the housing 1 described in this embodiment, which are respectively a two-wheel drive contact, a four-wheel drive contact and a differential lock contact. A signal member 74 is provided on the driven member 7, and each signal contact 14 is located on the movement trajectory of the signal member 74. Therefore, the signal member 74 moves with the driven member 7, and when the driven member 7 drives the sliding control member 4 to the corresponding position so that the guide assembly 2 and the spline sleeve 3 are in the dual-drive mode, the signal member 74 contacts the two-wheel drive contact to indicate the current state and stops the rotation of the active member 6. Similarly, when the driven member 7 drives the sliding control member 4 to the corresponding position so that the guide assembly 2 and the spline sleeve 3 are in the four-wheel drive mode, the signal member 74 contacts the four-wheel drive contact to indicate the current state and stops the rotation of the active member 6. When the driven member 7 drives the sliding control member 4 to the corresponding position so that the guide assembly 2 and the spline sleeve 3 are in the differential lock mode, the signal member 74 contacts the differential lock contact to indicate the current state and stops the rotation of the active member 6.

[0064] Preferably, the signal member 74 is slidably mounted on the follower 7, and a spring is provided between the signal member 74 and the follower 7, so as to better elastically drive the signal member 74 toward the signal contact 14 and improve the stability of the touch control.

[0065] Specifically, the guide assembly 2 in this embodiment includes a power shaft 21, a differential seat 22, a differential gear 23, a first output member 24, a second output member 25 and a linkage member 26. The power shaft 21, the differential seat 22 and the linkage member 26 are all rotatably mounted on the housing 1, and the rotation axis of the power shaft 21 is perpendicular to the rotation axis of the differential seat 22, and the rotation axis of the differential seat 22 is the same as the rotation axis of the linkage member 26. An axial end of the power shaft 21 is provided with helical gears, and the outer periphery of the differential seat 22 is also provided with helical gears, so that the power shaft 21 and the differential seat 22 are meshed with each other and the rotation of the power shaft 21 drives the differential seat 22 to rotate. The first output member 24, the second output member 25 and the differential gear 23 are rotatably mounted on the differential seat 22, and the rotation axes of the first output member 24 and the second output member 25 are the same, and are the same as the rotation axis of the differential seat 22, and the differential gear 23 is rotatably mounted on the differential seat 22. The rotation axis of the tooth 23 is perpendicular to the rotation axis of the differential seat 22, and the axially facing ends of the first output member 24 and the second output member 25 are both provided with helical teeth, and the first output member 24 and the second output member 25 are linked by meshing through the differential teeth 23. The spline sleeve 3 is sleeved on the outer periphery of the linkage member 26, and the inner periphery of the spline sleeve 3 is provided with an inner flower portion 32 and the outer periphery is provided with an outer flower portion 33. Correspondingly, the outer periphery of the linkage member 26 is provided with a first matching flower portion 261 matching with the inner flower portion 32, so that the spline sleeve 3 and the linkage member 26 rotate synchronously. In addition, the outer periphery of the second output member 25 is provided with a second matching flower portion 251 for matching with the inner flower portion 32. The differential seat 22 is provided with a locking socket 221 for inserting the spline sleeve 3, and the inner periphery of the locking socket 221 is provided with a third matching flower portion 222 for matching with the outer flower portion 33.

[0066] And it is divided into three states:

[0067] Status 1 can be referenced Figure 7 As shown, only the inner flower portion 32 cooperates with the first matching flower portion 261, that is, the spline sleeve 3 only cooperates with the linkage member 26, so that the rotation of the power shaft 21 can be transmitted through the differential seat 22, the differential gear 23, and the first output member 24, so that the first output member 24 can output kinetic energy, while the second output member 25 is not connected to the linkage member 26 and cannot output kinetic energy, which is a dual-drive mode.

[0068] State 2 can be referenced Figure 8As shown, the inner flower portion 32 cooperates with not only the first matching flower portion 261 but also the second matching flower portion 251, that is, the spline sleeve 3 cooperates with the linkage member 26 and the second output member 25 at the same time, so that the rotation of the power shaft 21 can be transmitted through the differential seat 22, the differential gear 23, and the first output member 24, so that the first output member 24 can output kinetic energy, and at the same time, the rotation of the power shaft 21 can be transmitted through the differential seat 22, the differential gear 23, the second output member 25, and the linkage member 26, so that the linkage member 26 can output kinetic energy, which is a four-wheel drive mode and can realize differential motion.

[0069] Status 3 can be referenced Fig. 9 As shown, the inner flower portion 32 cooperates with not only the first matching flower portion 261 but also the second matching flower portion 251. In addition, the outer flower portion 33 also cooperates with the third matching flower portion 222, so that the differential seat 22, the second output member 25, and the linkage member 26 are in a synchronous rotation state, that is, the rotation of the power shaft 21 causes the differential seat 22, the second output member 25, and the linkage member 26 to rotate synchronously, and then through the differential teeth 23, the first output member 24 is also synchronously rotated and matched with the differential seat 22, thereby completing the latch locking, which is the differential lock mode.

[0070] Embodiment 2:

[0071] A drive mode switching mechanism, whose main structure is the same as that of the first embodiment, except that each of the active force-applying parts 61 and the driven force-bearing parts 71 is located between two torsion arms 51. In this case, the elastic torsion spring 5 is in a natural state, and the requirements for the torsion arms 51 are relatively high. It is necessary to make the spacing between the torsion arms 51 just meet the spacing between the two active force-applying parts 61 and the spacing between the two driven force-bearing parts 71, and the pre-elastic potential energy cannot be stored.

[0072] Embodiment three:

[0073] A drive mode switching mechanism, whose main structure is the same as that of the first embodiment, except that the differential seat 22, the differential gear 23, the first output member 24, and the second output member 25 are not provided, only a single-side output shaft is provided, and the single-side output shaft cooperates with the power shaft 21 to be driven to rotate, and a second matching flower portion 251 is provided on the single-side output shaft, so that when the spline sleeve 3 cooperates with the linkage member 26, it is a dual-drive mode, and when the spline sleeve 3 cooperates with the linkage member 26 and the single-side output shaft at the same time, it is a four-wheel drive mode.

[0074] That is, it only has dual-wheel drive mode and four-wheel drive mode.

[0075] Embodiment 4:

[0076] The utility model discloses an all-terrain vehicle, comprising the driving mode switching mechanism described in embodiments 1 to 3.

[0077] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drive mode switching mechanism, characterized in that: include: Housing (1); A guide assembly (2) and a spline sleeve (3), wherein the guide assembly (2) is arranged on the housing (1), and the spline sleeve (3) is slidably mounted on the guide assembly (2); A sliding control member (4) for controlling the sliding of the spline sleeve (3), the sliding control member (4) being slidingly mounted on the housing (1); an elastic torsion spring (5), the elastic torsion spring (5) being provided with two torsion arms (51); An active member (6) and a driven member (7), both of which are rotatably mounted on the housing (1); the active member (6) is provided with an active force-applying portion (61) corresponding to each torsion arm (51); the driven member (7) is provided with a driven force-receiving portion (71) corresponding to each torsion arm (51); each active force-applying portion (61) and the corresponding driven force-receiving portion (71) are located on the same side of the corresponding torsion arm (51); the driven member (7) is provided with a second linkage portion (73); the second linkage portion (73) cooperates with the sliding control member (4) so ​​that the rotation of the driven member (7) drives the sliding of the sliding control member (4); The active member (6) rotates so that one of the active force applying parts (61) moves toward the corresponding torsion arm (51), while the other active force applying part (61) moves away from the corresponding torsion arm (51).

2. The drive mode switching mechanism according to claim 1, characterized in that: Each of the active force-applying portion (61) and the driven force-receiving portion (71) is located between two torsion arms (51); or, Each active force-applying portion (61) and the corresponding driven force-receiving portion (71) are located on a side of the corresponding torsion arm (51) that is away from the other torsion arm (51).

3. The drive mode switching mechanism according to claim 1 or 2, characterized in that: The housing (1) is provided with a mounting column (12), and the active component (6), the elastic torsion spring (5), and the driven component (7) are sequentially sleeved on the outer circumference of the mounting column (12), and the active component (6) and the driven component (7) are both rotatably mounted on the mounting column (12).

4. The driving mode switching mechanism according to claim 3, characterized in that: The two torsion arms (51) are arranged radially along the mounting column (12); the active member (6) is provided with a first clamping portion (62); the driven member (7) is provided with a second clamping portion (72); the first clamping portion (62) and the second clamping portion (72) are located at two axial ends of the two torsion arms (51) along the mounting column (12).

5. The driving mode switching mechanism according to claim 1, characterized in that: It also includes an input shaft (13) rotatably mounted on the housing (1), one axial end of the input shaft (13) being provided with a first linkage slide rail (131) extending in the radial direction, and the active member (6) being provided with a first linkage slide block (63) slidingly engaged in the first linkage slide rail (131).

6. The driving mode switching mechanism according to claim 1, characterized in that: A plurality of signal contacts (14) are arranged on the housing (1), a signal member (74) is arranged on the driven member (7), and each signal contact (14) is located on the movement track of the signal member (74).

7. The driving mode switching mechanism according to claim 1, characterized in that: The guide assembly (2) comprises a power shaft (21), a differential seat (22), differential teeth (23), a first output member (24), a second output member (25) and a linkage member (26); the power shaft (21), the differential seat (22) and the linkage member (26) are all rotatably mounted on the housing (1); the power shaft (21) is meshed with the differential seat (22) so that the power shaft (21) rotates and drives the differential seat (22) to rotate; the first output member (24), the second output member (25) and the differential teeth (23) are rotatably mounted on the differential seat (22); the differential teeth (23) respectively mesh with the first output member (24) and the second output member (25) to perform linkage; the spline sleeve (3) is sleeved on the outer periphery of the linkage member (26); the inner periphery of the spline sleeve (3) is provided with an inner flower portion (32) and the outer periphery is provided with a The invention discloses a coupling member (26) having an outer flower portion (33), a first matching flower portion (261) matching with the inner flower portion (32) being arranged on the outer periphery of the coupling member (26), a second matching flower portion (251) matching with the inner flower portion (32) being arranged on the outer periphery of the second output member (25), a locking socket (221) for inserting a spline sleeve (3) being arranged on the differential seat (22), a third matching flower portion (222) matching with the outer flower portion (33) being arranged on the inner periphery of the locking socket (221), when the inner flower portion (32) matches with the second matching flower portion (251), the second output member (25) and the coupling member (26) are in a synchronous rotation state, and when the inner flower portion (32) matches with the third matching flower portion (222), the differential seat (22), the second output member (25) and the coupling member (26) are in a synchronous rotation state.

8. The driving mode switching mechanism according to claim 1, characterized in that: A sliding guide rod (11) is arranged in the housing (1), and the sliding control component (4) is sleeved on the outer periphery of the sliding guide rod (11) and slides along the axial direction of the sliding guide rod (11).

9. An all-terrain vehicle, characterized in that: It comprises the driving mode switching mechanism as described in any one of claims 1 to 8.

Images