Differential locking mechanism and vehicle

Abstract

The embodiment of the utility model discloses a differential locking mechanism, and relates to the technical field of vehicles. The electromagnetic unlocking device comprises an inner rotor, a roller pin retainer, a locking gear, a locking ring, an electromagnetic unlocking shifting piece and an electromagnetic ring. The roller pin retainer comprises a plurality of supporting elastic sheets and elastic sheet grooves formed between the adjacent supporting elastic sheets; a roller pin is arranged in the elastic sheet groove; the roller pin is arranged in an arc groove in the inner side of the locking gear; when the roller pins are located in the arc grooves, gaps are formed between the roller pins and the inner rotor; when the roller pins are positioned at one ends of the arc grooves, the roller pins are in contact with the inner rotor; when the electromagnetic ring is not electrified, the roller pin is positioned in the arc groove under the elastic force of the supporting elastic sheet; when the electromagnetic ring is powered on, the electromagnetic ring generates magnetic force to attract the electromagnetic unlocking poking piece, the electromagnetic unlocking poking piece pokes the roller pin holder when the locking gear moves, and then the roller pin moves to one end of the arc groove. According to the differential locking mechanism, the problems that after a front axle of a vehicle is locked, turning is difficult, and the direction is difficult to control are solved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a differential locking mechanism and a vehicle. Background Art

[0002] At present, the front axle locking mechanism of vehicles is mainly divided into three types: electromagnetic differential locking mechanism, mechanical differential locking mechanism and pneumatic differential locking mechanism. Among them, the electromagnetic differential locking mechanism is mainly composed of electromagnetic coil, locking sleeve and differential (bevel gear differential accounts for a large proportion). The electromagnetic coil is used as an actuator to lock the differential housing and half-axle gears through the electromagnet electrically attracting the locking sleeve to achieve the purpose of differential locking; the mechanical differential locking mechanism pushes the locking sleeve to lock the differential through the connecting rod mechanism; the pneumatic differential locking mechanism mainly controls the shift fork to shift the locking sleeve to lock the differential by the built-in cylinder piston.

[0003] The existing electromagnetic differential locking mechanism, mechanical differential locking mechanism and pneumatic differential locking mechanism are generally the same in terms of locking mechanism, and all include a locking differential housing and axle gears. However, when used as a front axle of a vehicle, when the coupling sleeve is combined with the axle gear and the differential housing, the left and right wheels of the axle rotate at the same speed, and there is no wheel speed difference, which does not meet the turning requirements. As a result, the vehicle cannot turn normally after locking the differential, and it is difficult to control the direction when driving on complex road conditions, which poses a great safety hazard. Utility Model Content

[0004] The embodiments of the present specification provide a differential locking mechanism to solve the potential safety hazard problems existing in the existing differential locking mechanisms.

[0005] To solve the above technical problems, the embodiments of this specification are implemented as follows:

[0006] A differential locking mechanism provided in an embodiment of the present specification includes two concentrically opposed inner rotors, a needle roller cage, a locking gear, a locking ring, an electromagnetic unlocking paddle, and an electromagnetic ring;

[0007] The two inner rotors are arranged in the locking gear, and the needle roller retainer is arranged between the two inner rotors and the locking gear;

[0008] The needle roller retainer comprises a plurality of supporting spring sheets and spring sheet grooves arranged between adjacent supporting spring sheets; the needle roller is arranged in the spring sheet groove;

[0009] A plurality of arc grooves are arranged on the inner side of the locking gear; the needle roller is arranged in the arc groove; when the needle roller is located in the arc groove, there is a gap between the needle roller and the inner rotor; when the needle roller is located at one end of the arc groove, the needle roller contacts the inner rotor;

[0010] The locking ring is arranged on one side of the locking gear; the electromagnetic unlocking paddle is meshed with the locking ring; the electromagnetic unlocking paddle is connected to the needle roller holder, and the electromagnetic unlocking paddle is used to move the needle roller holder;

[0011] The electromagnetic ring is arranged on the outside of the electromagnetic unlocking paddle;

[0012] When the electromagnetic ring is not energized, the needle roller is located in the arc groove under the elastic force of the supporting spring sheet; when the electromagnetic ring is energized, the electromagnetic ring generates magnetic force to attract the electromagnetic unlocking paddle, and when the locking gear moves, the electromagnetic unlocking paddle moves the needle roller retainer, and then the needle roller moves to one end of the arc groove.

[0013] Optionally, the locking ring is used to reset the electromagnetic unlocking paddle to a preset position.

[0014] Optionally, a protrusion is provided on the electromagnetic unlocking paddle, and a groove is provided on the needle roller holder; the protrusion is snapped into the groove to achieve snap connection between the electromagnetic unlocking paddle and the needle roller holder.

[0015] Optionally, the locking ring includes a return spring; the return spring and the electromagnetic unlocking paddle are respectively arranged on both sides of the locking ring.

[0016] Optionally, the electromagnetic unlocking paddle is made of magnetic conductive material.

[0017] Optionally, the differential locking mechanism further includes a housing; and the electromagnetic ring is fixed inside the housing.

[0018] Optionally, the differential locking mechanism further comprises an input gear meshing with the locking gear; the rotation of the input gear drives the locking gear to rotate.

[0019] A vehicle provided in an embodiment of the present specification includes the differential locking mechanism described above.

[0020] An embodiment of this specification can achieve the following beneficial effects:

[0021] The embodiment of the present specification provides a differential locking mechanism, including two concentrically oppositely arranged inner rotors, a needle roller retainer, a locking gear, a locking ring, an electromagnetic unlocking paddle and an electromagnetic ring; the two inner rotors are arranged in the locking gear, and the needle roller retainer is arranged between the two inner rotors and the locking gear; the needle roller retainer includes a plurality of supporting springs and spring sheet grooves arranged between adjacent supporting springs; a needle roller is arranged in the spring sheet groove; a plurality of arc grooves are arranged on the inner side of the locking gear; the needle roller is arranged in the arc groove; when the needle roller is located in the arc groove, the contact between the needle roller and the inner rotor There is a gap between the two ends; when the needle roller is located at one end of the arc groove, the needle roller contacts the inner rotor; the locking ring is arranged on one side of the locking gear; the electromagnetic unlocking paddle is meshed with the locking ring; the electromagnetic unlocking paddle is connected to the needle roller holder, and the electromagnetic unlocking paddle is used to move the needle roller holder; the electromagnetic ring is arranged on the outside of the electromagnetic unlocking paddle; when the electromagnetic ring is not energized, the needle roller is located in the arc groove under the elastic force of the supporting spring sheet; when the electromagnetic ring is energized, the electromagnetic ring generates magnetic force to attract the electromagnetic unlocking paddle, and when the locking gear moves, the electromagnetic unlocking paddle moves the needle roller holder, and then the needle roller moves to one end of the arc groove.

[0022] The differential locking mechanism of the embodiment of the present specification solves the problem of difficulty in turning and steering after the front axle of the vehicle is locked, thereby increasing the vehicle's controllability and driving safety.

[0023] The differential locking mechanism of the embodiment of the present specification automatically adapts to the turning radius, has a fast response speed, and can realize stepless differential; at the same time, it can also realize the transfer function, and has a very high market application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of this specification 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 recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A cross section of a differential locking mechanism provided in an embodiment of this specification Figure 1 ;

[0026] Figure 2 A schematic diagram of the connection between an electromagnetic unlocking paddle and a needle roller cage provided in an embodiment of this specification;

[0027] Figure 3 A schematic diagram of the position of an electromagnetic ring in a differential locking mechanism provided in an embodiment of this specification;

[0028] Figure 4 A cross section of a differential locking mechanism provided in an embodiment of this specification Figure 2 ;

[0029] Figure 5 A structural diagram of an inner rotor provided in an embodiment of this specification;

[0030] Figure 6 A structural diagram of a needle roller cage provided in an embodiment of this specification;

[0031] Figure 7 A schematic diagram of the position of a needle roller provided in an embodiment of this specification;

[0032] Explanation of symbols:

[0033] 1-inner rotor, 2-needle roller cage, 3-locking gear, 4-locking ring, 5-electromagnetic unlocking paddle, 6-electromagnetic ring, 7-input gear, 21-support spring, 22-spring groove, 23-needle roller, 31-arc groove. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of one or more embodiments of this specification clearer, the technical solutions of one or more embodiments of this specification will be clearly and completely described below in combination with the specific embodiments of this specification and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of one or more embodiments of this specification.

[0035] The technical solutions provided by the embodiments of this specification are described in detail below in conjunction with the accompanying drawings.

[0036] The existing electromagnetic differential locking mechanism, mechanical differential locking mechanism and pneumatic differential locking mechanism are generally the same in terms of locking mechanism, and all include a locking differential housing and axle gears. However, when used as a front axle of a vehicle, when the coupling sleeve is combined with the axle gear and the differential housing, the left and right wheels of the axle rotate at the same speed, and there is no wheel speed difference, which does not meet the turning requirements. As a result, the vehicle cannot turn normally after locking the differential, and it is difficult to control the direction when driving on complex road conditions, which poses a great safety hazard.

[0037] In order to solve the defects in the prior art, this solution provides the following embodiments:

[0038] like Figure 1-7As shown, the differential locking mechanism provided in the embodiment of the present invention comprises two inner rotors 1 arranged concentrically and oppositely, a needle roller retainer 2, a locking gear 3, a locking ring 4, an electromagnetic unlocking paddle 5 and an electromagnetic ring 6. The two inner rotors 1 are arranged in the locking gear 3, and the needle roller retainer 2 is arranged between the two inner rotors 1 and the locking gear 3. The needle roller retainer 2 comprises a plurality of supporting springs 21 and spring slots 22 arranged between adjacent supporting springs 21. A needle roller 23 is arranged in the spring slot 22.

[0039] A plurality of arc grooves 31 are provided on the inner side of the locking gear 3. The needle roller 23 is provided in the arc groove 31. When the needle roller 23 is located in the arc groove 31, there is a gap between the needle roller 23 and the inner rotor 1; when the needle roller 23 is located at one end of the arc groove 31, the needle roller 23 contacts the inner rotor 1.

[0040] The locking ring 4 is arranged on one side of the locking gear 3. The electromagnetic unlocking paddle 5 is meshed with the locking ring 4. The electromagnetic unlocking paddle 5 is connected to the needle roller cage 2, and the electromagnetic unlocking paddle 5 is used to move the needle roller cage 2. Further, the electromagnetic ring 6 is arranged outside the electromagnetic unlocking paddle 5.

[0041] In the embodiment of the present specification, when the electromagnetic ring 6 is not energized, the needle roller 23 is located in the arc groove 31 under the elastic force of the supporting spring sheet 21; when the electromagnetic ring 6 is energized, the electromagnetic ring 6 generates magnetic force to attract the electromagnetic unlocking paddle 5. In this way, when the locking gear 3 moves, the electromagnetic unlocking paddle 5 will move the needle roller cage 2, and then the needle roller 23 moves to one end of the arc groove 31.

[0042] In the embodiment of the present specification, the locking ring 4 is used to reset the electromagnetic unlocking paddle 5 to a preset position.

[0043] In the embodiment of the present specification, a protrusion is provided on the electromagnetic unlocking paddle 5, and a groove is provided on the needle roller retainer 2; the electromagnetic unlocking paddle 5 and the needle roller retainer 2 can be engaged with each other by inserting the protrusion into the groove.

[0044] Furthermore, the locking ring 4 includes a return spring; the return spring and the electromagnetic unlocking paddle 5 are respectively arranged on both sides of the locking ring 4.

[0045] Furthermore, the electromagnetic unlocking paddle 5 is made of magnetic conductive material.

[0046] Optionally, the differential locking mechanism further includes a housing; the electromagnetic ring 6 is fixed inside the housing.

[0047] In the embodiment of the present specification, the differential locking mechanism further includes an input gear 7 meshing with the locking gear 3; when the input gear 7 rotates, the locking gear 3 can be driven to rotate.

[0048] In the embodiment of the present specification, the needle roller 23 in the spring slot 22 is located in the arc groove 31 under the action of the supporting spring 21, wherein the embodiment of the present specification provides Figure 7 The figure shows the situation when the needle roller 21 is located in the circular arc groove 31. When the input gear 7 rotates to drive the locking gear 3 to rotate, the needle roller retainer 2, the electromagnetic unlocking paddle 5 and the electromagnetic ring 6 will rotate with the rotation of the locking gear 3. Since the needle roller 23 is located in the circular arc groove 31, there is a gap between the needle roller 23 and the inner rotor 1, so the rotation of the needle roller retainer 2 will not drive the inner rotor 1 to rotate, and it can be in an unlocked state at this time. When the electromagnetic ring 6 is energized, the electromagnetic unlocking paddle 5 will be attracted to the electromagnetic ring 6 by the magnetic force of the electromagnetic ring 6, and under the friction between the electromagnetic ring 6 and the electromagnetic unlocking paddle 5, the electromagnetic ring 6 and the electromagnetic unlocking paddle 5 have a relative static tendency. When the input gear 7 rotates to drive the locking gear 3 to rotate, due to the friction between the electromagnetic ring 6 and the electromagnetic unlocking paddle 5, the electromagnetic unlocking paddle 5 will move the needle roller retainer 2, thereby causing the needle roller 23 to move to one end of the circular arc groove 31, wherein the embodiments of this specification provide Figure 7 The figure shows the situation when the needle roller 21 is located at one end of the arc groove 31. When the needle roller 21 is located at one end of the arc groove 31, the needle roller 21 will contact the inner rotor 1, and the needle roller 21 will drive the inner rotor 1 to rotate until the speed of the inner rotor 1 is the same as the speed of the locking gear 3, thereby reaching the locking state.

[0049] Furthermore, when the electromagnetic ring 6 is powered off, the electromagnetic unlocking paddle 5 is separated from the electromagnetic ring 6 , and the electromagnetic unlocking paddle is reset to a preset position under the action of the locking ring 4 .

[0050] like Figure 6 As shown, the needle roller cage 2 in the embodiment of this specification includes two rows of spring plate grooves 22, and the supporting spring plates 21 in the two rows of spring plate grooves will respectively lock the two inner rotors 1. Therefore, when the rotation direction of a certain inner rotor 1 is opposite to the rotation direction of the locking gear 3, it can be in an unlocked state. When the vehicle moves in a straight line, the two inner rotors 1 can be locked; and when the vehicle turns, one inner rotor 1 can be locked.

[0051] The differential locking mechanism of the embodiment of the present specification solves the problem of difficulty in turning and steering after the front axle of the vehicle is locked, thereby increasing the vehicle's controllability and driving safety.

[0052] The differential locking mechanism of the embodiment of the present specification automatically adapts to the turning radius, has a fast response speed, and can realize stepless differential; at the same time, it can also realize the transfer function, and has a very high market application prospect.

[0053] Based on the above technical principles, an embodiment of the present specification further provides a vehicle, wherein the vehicle includes the differential locking mechanism described above.

[0054] The terms "first", "second", "third", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects described in this way can be interchanged under appropriate circumstances. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0055] In the present invention, the drawings discussed below and the embodiments used to describe the principles disclosed in the present invention are for illustration only and should not be interpreted as limiting the scope of the present invention. It will be understood by those skilled in the art that the principles of the present invention can be implemented in any appropriately arranged system. Exemplary embodiments will be described in detail, and examples of these embodiments are shown in the accompanying drawings. In addition, the terminal according to the exemplary embodiments will be described in detail with reference to the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same elements.

[0056] The terms used in the present utility model specification are only used to describe specific embodiments and are not intended to show the concept of the utility model. Unless there is a clear different meaning in the context, expressions used in the singular form include expressions in the plural form. In the present utility model specification, it should be understood that terms such as "including", "having" and "containing" are intended to illustrate the possibility of the presence of features, numbers, steps, actions or combinations thereof disclosed in the utility model specification, and are not intended to exclude the possibility that one or more other features, numbers, steps, actions or combinations thereof may exist or may be added. The same reference numerals in the drawings refer to the same parts.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] This article uses specific examples to illustrate the principle and implementation of the utility model. The above examples are only used to help understand the core idea of ​​the utility model. At the same time, for those skilled in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation and application scope. In summary, the content of this utility model should not be understood as limiting the utility model.

Claims

1. A differential locking mechanism, comprising two concentrically opposed inner rotors, a needle roller cage, a locking gear, a locking ring, an electromagnetic unlocking paddle and an electromagnetic ring; It is characterized in that The two inner rotors are arranged in the locking gear, and the needle roller retainer is arranged between the two inner rotors and the locking gear; The needle roller retainer comprises a plurality of supporting spring sheets and spring sheet grooves arranged between adjacent supporting spring sheets; the needle roller is arranged in the spring sheet groove; A plurality of arc grooves are arranged on the inner side of the locking gear; the needle roller is arranged in the arc groove; when the needle roller is located in the arc groove, there is a gap between the needle roller and the inner rotor; when the needle roller is located at one end of the arc groove, the needle roller contacts the inner rotor; The locking ring is arranged on one side of the locking gear; the electromagnetic unlocking paddle is meshed with the locking ring; the electromagnetic unlocking paddle is connected to the needle roller holder, and the electromagnetic unlocking paddle is used to move the needle roller holder; The electromagnetic ring is arranged on the outside of the electromagnetic unlocking paddle; When the electromagnetic ring is not energized, the needle roller is located in the arc groove under the elastic force of the supporting spring sheet; when the electromagnetic ring is energized, the electromagnetic ring generates magnetic force to attract the electromagnetic unlocking paddle, and when the locking gear moves, the electromagnetic unlocking paddle moves the needle roller retainer, and then the needle roller moves to one end of the arc groove.

2. The differential locking mechanism according to claim 1, It is characterized in that The locking ring is used to reset the electromagnetic unlocking paddle to a preset position.

3. The differential locking mechanism according to claim 1, It is characterized in that The electromagnetic unlocking paddle is provided with a protrusion, and the needle roller retainer is provided with a groove; the protrusion is inserted into the groove to realize the clamping connection between the electromagnetic unlocking paddle and the needle roller retainer.

4. The differential locking mechanism according to claim 1, It is characterized in that The locking ring comprises a return spring; the return spring and the electromagnetic unlocking paddle are respectively arranged on both sides of the locking ring.

5. The differential locking mechanism according to claim 1, It is characterized in that The electromagnetic unlocking paddle is made of magnetic conductive material.

6. The differential locking mechanism according to claim 1, It is characterized in that The differential locking mechanism further comprises a housing; the electromagnetic ring is fixed inside the housing.

7. The differential locking mechanism according to claim 1, It is characterized in that The differential locking mechanism further comprises an input gear meshing with the locking gear; the rotation of the input gear drives the locking gear to rotate.

8. A vehicle, It is characterized in that The invention comprises the differential locking mechanism as claimed in any one of claims 1 to 7.

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