Clutch, differential and vehicle having the same

Abstract

The present application discloses a clutch, a differential and a vehicle having the same. The clutch includes: a first housing, an inner ring, an outer ring, rollers and an intermediate retainer; there is an installation space inside the first housing; the inner ring is fixed in the installation space; the outer ring is sleeved outside the inner ring, and a receiving space is defined between the inner ring and the outer ring, and there are a rolling position and a jamming position in the receiving space; the rollers are located in the receiving space, when the rollers are in the rolling position, the rollers are adapted to rotate, and when the rollers are in the jamming position, the rollers are jammed between the inner ring and the outer ring; the intermediate retainer is movably installed between the inner ring and the outer ring, and has a locking position and an unlocking position. When the intermediate retainer is in the locking position, the rollers are restricted to the rolling position, and when the intermediate retainer is in the unlocking position, the rollers are adapted to move from the rolling position to the jamming position. For the clutch according to the embodiment of the present invention, power transmission is performed by restricting the position of the rollers through the intermediate retainer, thereby avoiding torque shock phenomenon.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and more particularly to a clutch, a differential and a vehicle having the same. Background Art

[0002] In the prior art, most of the electromagnetic clutch disconnection devices of differentials use gear meshing for power transmission. However, because there is a rotational speed difference at the moment of torque engagement, a torque impact phenomenon will occur, which will cause certain damage to both the gears and the differential, reducing the service life of the device. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a clutch, which can avoid the torque impact phenomenon, make the power transmission smooth and stable, and extend the service life of the device.

[0004] The clutch according to an embodiment of the present invention includes: a first housing, an inner ring, an outer ring, rollers and an intermediate retainer; there is an installation space inside the first housing; the inner ring is fixed in the installation space; the outer ring is sleeved outside the inner ring, and a receiving space is defined between the inner ring and the outer ring, and there are a rolling position and a jamming position in the receiving space; the rollers are located in the receiving space, when the rollers are in the rolling position, the rollers are adapted to rotate, and when the rollers are in the jamming position, the rollers are jammed between the inner ring and the outer ring; the intermediate retainer is movably installed between the inner ring and the outer ring, and has a locking position and an unlocking position. When the intermediate retainer is in the locking position, it is used to limit the rollers to the rolling position, and when the intermediate retainer is in the unlocking position, the rollers are adapted to move from the rolling position to the jamming position.

[0005] For the clutch according to an embodiment of the present invention, by using the movement of the intermediate retainer to control the disconnection and connection of power, such a design is simple, ingenious, reliable and practical; by using the intermediate retainer to limit the position of the rollers to transmit power, there will be no torque impact phenomenon, making the power transmission smoother and extending the service life of the clutch.

[0006] In addition, the clutch according to the present invention may further have the following additional technical features:

[0007] In some embodiments, the outer side surface of the inner ring has a first limiting plane, and the first limiting plane is perpendicular to the straight line in the radial direction of the inner ring, or the inner side surface of the outer ring has a second limiting plane, and the second limiting plane is perpendicular to the straight line in the radial direction of the outer ring.

[0008] In some embodiments, the clutch has a first axis, and there are a plurality of accommodating spaces which are evenly spaced around the first axis. Wherein, there is at least one of the rollers in each of the accommodating spaces.

[0009] In some embodiments, the roller is a ball or a roller. When the roller is a roller, the second axis of the roller is parallel to the first axis of the clutch.

[0010] In some embodiments, the intermediate retainer includes: a retaining plate; an intermediate retaining member adapted to reciprocate between the locking position and the unlocking position; an elastic member installed between the retaining plate and the intermediate retaining member for keeping the intermediate retaining member in the locking position; and an electromagnetic coil for moving the intermediate retaining member from the locking position to the unlocking position.

[0011] In some embodiments, the intermediate retaining member has a first mating portion, and the inner ring has a second mating portion. When the intermediate retainer is in the locking position, the first mating portion and the second mating portion cooperate to enable the inner ring to drive the intermediate retainer to rotate.

[0012] In some embodiments, the intermediate retaining member has mating convex posts extending toward the inner ring. There are a plurality of the mating convex posts which are evenly spaced along the first axis. Each of the mating convex posts is formed with the first mating portion. The side of the inner ring away from the intermediate retainer has a mating ring, and the mating ring is formed with the second mating portion which mates with the first mating portion; the first mating portion is a mating groove formed at the end of the mating convex post, and the second mating portion is a mating protrusion formed on the mating ring; a limiting space is defined between two adjacent mating convex posts, and the roller is rotatably located in the limiting space.

[0013] The present invention also provides a differential having the above clutch.

[0014] The differential according to an embodiment of the present invention includes: a second housing, a transmission ring, a connecting shaft, a planetary gear, a half shaft gear, and a clutch; in this embodiment, a placement space is defined in the second housing; the transmission ring is located in the placement space and is fixedly connected to the outer ring; the connecting shaft is fixed in the transmission ring to rotate synchronously with the transmission ring; the planetary gear is sleeved on the connecting shaft and is rotatable relative to the connecting shaft; the half shaft gear is arranged in the placement space and meshes with the planetary gear. By providing the clutch of the above embodiment, torque impact phenomenon can be avoided, and the power transmission is smoother.

[0015] In addition, the differential according to the present invention may further have the following additional technical features:

[0016] In some embodiments, the half shaft gear includes a coaxial first half shaft gear and a second half shaft gear, and the first half shaft gear and the second half shaft gear are respectively mounted on the first housing and the second housing.

[0017] The present invention also provides a vehicle having the above differential.

[0018] For the vehicle according to the embodiment of the present invention, by providing the differential of the above embodiment, the power transmission can be made smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of a clutch according to an embodiment of the present invention;

[0020] Figure 2 is a front view of a clutch according to an embodiment of the present invention;

[0021] Figure 3 is a top view of a clutch according to an embodiment of the present invention;

[0022] Figure 4 is a schematic structural view of a differential according to an embodiment of the present invention;

[0023] Figure 5 is a schematic structural view of the differential (removing the second housing) according to an embodiment of the present invention;

[0024] Figure 6 is a schematic structural view of the differential planet gear and the half shaft gear according to an embodiment of the present invention.

[0025] REFERENCE SIGNS:

[0026] 100, clutch;

[0027] 1, first housing;

[0028] 2, inner ring; 21, first limiting plane; 22, second mating portion; 23, mating ring;

[0029] 3, outer ring;

[0030] 4, roller;

[0031] 5, intermediate retainer; 51, retaining piece; 52, intermediate retaining member; 53, elastic member; 54, electromagnetic coil; 501, first mating portion; 502, mating convex column;

[0032] 200, differential;

[0033] 6, second housing; 7, transmission ring; 8, connecting shaft; 9, half shaft gear; 91, first half shaft gear; 92, second half shaft gear; 10, planet gear;

[0034] A. Accommodating space. Specific embodiments

[0035] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0036] In the description of the present invention, 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", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 thus should not be construed as limiting the present invention.

[0037] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0038] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or a communication; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] First, refer to Figures 1-6 Describe the clutch 100 according to an embodiment of the present invention.

[0040] As Figures 1 to 6As shown, the clutch 100 according to an embodiment of the present invention includes: a first housing 1, an inner ring 2, an outer ring 3, rollers 4, and an intermediate retainer 5; in this embodiment, the first housing 1 has an installation space; the inner ring 2 is fixed in the installation space; the outer ring 3 is sleeved outside the inner ring 2, and a receiving space A is defined between the inner ring 2 and the outer ring 3. The receiving space A has a rolling position and a jamming position; the rollers 4 are located in the receiving space A. When the rollers 4 are in the rolling position, the rollers 4 are adapted to rotate freely. When the rollers 4 are in the jamming position, the rollers 4 are jammed between the inner ring 2 and the outer ring 3; the intermediate retainer 5 is movably installed between the inner ring 2 and the outer ring 3 and has a locking position and an unlocking position. When the intermediate retainer 5 is in the locking position, it is used to limit the rollers 4 to the rolling position. When the intermediate retainer 5 is in the unlocking position, the rollers 4 are adapted to move from the rolling position to the jamming position.

[0041] In addition, the outer ring 3 of the clutch 100 is connected to the differential 200, and the inner ring 2 of the clutch 100 is connected to the housing of the differential 200.

[0042] In some embodiments, the inner ring 2 fixed in the installation space is sleeved on a transmission shaft (not shown in the figure). The transmission shaft drives the inner ring 2 to rotate idly. When the electromagnetic device is not powered on, the intermediate retainer 5 is in the locking position and cooperates with the inner ring 2. The rollers 4 arranged in the receiving space A are in the rolling position and can roll freely. At this time, the inner ring 2 drives the intermediate retainer 5 to rotate together, and there is no connection relationship between the outer ring 3 and the inner ring 2 and the intermediate retainer 5. The transmission shaft does not transmit power to the clutch 100, and the two are in a disconnected state. After the electromagnetic device is powered on, the intermediate retainer 5 moves to the unlocking position under the traction of magnetic force. At this time, the inner ring 2 continues to rotate idly and disengages from the intermediate retainer 5. The rollers 4 in the receiving space A enter the jamming position from the rolling position, and the inner ring 2, the intermediate retainer 5, and the outer ring 3 are fixed together by jamming the rollers 4. The power output by the transmission shaft can be transmitted to the clutch 100 through the locking of the rollers 4; such a design avoids the torque impact phenomenon caused by different rotational speeds in gear transmission, does not damage the clutch 100 and the connecting parts, extends the service life of the clutch 100 and the connecting parts, and makes the power transmission smoother and more stable.

[0043] For the clutch 100 according to an embodiment of the present invention, by using the movement of the intermediate retainer 5 to control the disconnection and connection of power, such a design is simple, ingenious, reliable, and practical; by restricting the position of the rollers 4 through the intermediate retainer 5 to transmit power, there will be no torque impact phenomenon, making the power transmission smoother and more stable, and extending the service life of the clutch 100.

[0044] In an embodiment of the present invention, as Figures 1 to 6As shown, the outer side surface of the inner ring 2 has a first limiting plane 21, and the first limiting plane 21 is perpendicular to the straight line in the radial direction of the inner ring 2. Alternatively, the inner side surface of the outer ring 3 has a second limiting plane, and the second limiting plane is perpendicular to the straight line in the radial direction of the outer ring 3. For example Figure 1 As shown, the side wall of the cylindrical roller 4 abuts against the first limiting plane 21. The first limiting plane 21 perpendicular to the radial direction of the inner ring 2 can better limit the roller 4, preventing the roller 4 from slipping or shifting, which may cause unstable transmission. In this embodiment, by setting the first limiting plane 21 or the second limiting plane, the rotation of the roller 4 in the accommodation space A is restricted. When the intermediate retainer 5 is in the unlocked position, the inner ring 2 is disengaged from the intermediate retainer 5, and the inner ring 2 drives the roller 4 to roll. Under the restriction of the first limiting plane 21 or the second limiting plane, the roller 4 enters the stuck position and cannot move, so that the inner ring 2, the intermediate retainer 5, and the outer ring 3 are stuck and fixed to achieve power transmission.

[0045] In an embodiment of the present invention, as Figures 1 to 6 As shown, the clutch 100 has a first axis, and there are multiple accommodation spaces A. The multiple accommodation spaces A are evenly spaced around the first axis. Among them, there is at least one roller 4 in each accommodation space A. In this embodiment, the first axis is the central axis of the transmission shaft (not shown in the figure). Evenly spacing the multiple accommodation spaces A can make the rollers 4 placed in the accommodation spaces A more evenly distributed. In this way, not only can the overall mass distribution of the clutch 100 be more uniform, but also when the rollers 4 enter the stuck position for power transmission, the clutch 100 can rotate more smoothly, with higher transmission efficiency and reduced kinetic energy loss.

[0046] In an embodiment of the present invention, as Figures 1 to 6 As shown, the roller 4 can be a ball or a roller. When the roller 4 is a roller, the second axis of the roller is parallel to the first axis of the clutch 100. In this way, when the roller is driven to rotate, it can always remain parallel to the central axis of the transmission shaft (not shown in the figure) without shifting, which can reduce kinetic energy loss.

[0047] In an embodiment of the present invention, as Figures 1 to 6As shown, the intermediate retainer 5 may include: a retaining piece 51, an intermediate retaining member 52, an elastic member 53, and an electromagnetic coil 54; in this embodiment, the retaining piece 51 is used to block and limit the intermediate retaining member 52 when the electromagnetic coil 54 is energized and the intermediate retaining member 52 is pulled into the unlocking position by magnetic force, preventing the intermediate retaining member 52 from colliding with the electromagnetic coil 54 and causing damage to the electromagnetic coil 54; the intermediate retaining member 52 is adapted to reciprocate between a locking position and an unlocking position; the elastic member 53 is installed between the retaining piece 51 and the intermediate retaining member 52 and is used to keep the intermediate retaining member 52 in the locking position. When the electromagnetic coil 54 is de-energized, the elastic member 53 can also provide a restoring force to the intermediate retaining member 52, causing the intermediate retainer 5 to return to the locking position; in addition, the elastic member 53 can be a spring or other components, which is not specifically limited here; the electromagnetic coil 54 is used to move the intermediate retaining member 52 from the locking position to the unlocking position. When the electromagnetic coil 54 is energized, it can generate a magnetic force to pull the intermediate retaining member 52 to the unlocking position.

[0048] In a specific embodiment of the present invention, as Figures 1 to 6 shown, the intermediate retaining member 52 has a first mating portion 501, and the inner ring 2 has a second mating portion 22. When the intermediate retainer 5 is in the locking position, the first mating portion 501 and the second mating portion 22 cooperate to enable the inner ring 2 to drive the intermediate retainer 5 to rotate. For example Figure 1 shown, the first mating portion 501 is a groove, and the second mating portion 22 is a convex tooth. When the intermediate retainer 5 is in the locking position, the convex teeth on the inner ring 2 are engaged in the grooves on the intermediate retainer 5, so that the inner ring 2 can drive the intermediate retainer 5 to rotate together.

[0049] In a specific embodiment example of the present invention, as Figures 1 to 6 shown, the intermediate retaining member 52 has a mating convex post 502 extending toward the inner ring 2. There are multiple mating convex posts 502, and the multiple mating convex posts 502 are evenly spaced along the first axis. Each mating convex post 502 is formed with a first mating portion 501. The side of the inner ring 2 away from the intermediate retainer 5 has a mating ring 23, and the mating ring 23 has a second mating portion 22 that mates with the first mating portion 501; the accommodation space A defined by the inner ring 2 and the outer ring 3 together is between two adjacent convex posts, and the accommodation space A and the convex posts are evenly staggered along the first axis.

[0050] Furthermore, the first mating portion 501 may be a mating groove formed at the end of the mating convex post 502, and the second mating portion 22 may be a mating protrusion formed on the mating ring 23; through the cooperation of the mating protrusion and the mating groove, the inner ring 2 can drive the intermediate retainer 5 to rotate together.

[0051] In addition, a limiting space can be defined between two adjacent mating convex columns 502, and the roller 4 is rotatably located in the limiting space. The limiting space is also the accommodating space A, which is a space jointly defined by adjacent convex columns, the inner ring 2, and the outer ring 3, and is used to place the roller 4 so that the roller 4 can freely roll therein. However, the limiting space will also become smaller as the inner ring 2 rotates and the inner ring 2 is disengaged from the intermediate retainer 5, thereby causing the roller 4 to enter the jammed position.

[0052] Next, reference will be made to Figures 1 to 6 describe the clutch 100 according to a specific embodiment of the present invention.

[0053] Specifically, as Figures 1 to 6 shown, the clutch 100 includes: a first housing 1, an inner ring 2, an outer ring 3, a roller 4, and an intermediate retainer 5; in this specific embodiment, the first housing 1 has an installation space; the inner ring 2 is fixed in the installation space; the outer ring 3 is sleeved outside the inner ring 2, and an accommodating space A is defined between the inner ring 2 and the outer ring 3. The accommodating space A has a rolling position and a jammed position; the roller 4 is located in the accommodating space A. When the roller 4 is in the rolling position, the roller 4 is adapted to rotate on its own axis. When the roller 4 is in the jammed position, the roller 4 is jammed between the inner ring 2 and the outer ring 3; the intermediate retainer 5 is movably installed between the inner ring 2 and the outer ring 3 and has a locked position and an unlocked position. When the intermediate retainer 5 is in the locked position, it is used to limit the roller 4 to the rolling position. When the intermediate retainer 5 is in the unlocked position, the roller 4 is adapted to move from the rolling position to the jammed position.

[0054] Furthermore, the outer side surface of the inner ring 2 has a first limiting plane 21, and the first limiting plane 21 is perpendicular to the straight line in the radial direction of the inner ring 2; the clutch 100 has a first axis, and there are a plurality of accommodating spaces A, and the plurality of accommodating spaces A are arranged at equal intervals around the first axis. Among them, each accommodating space A has a roller 4; the roller 4 is a roller, and the second axis of the roller is parallel to the first axis of the clutch 100.

[0055] In addition, the intermediate retainer 5 includes: a retaining piece 51, an intermediate retaining member 52, an elastic member 53, and an electromagnetic coil 54; the intermediate retaining member 52 is adapted to reciprocate between a locking position and an unlocking position; the elastic member 53 is installed between the retaining piece 51 and the intermediate retaining member 52 for keeping the intermediate retaining member 52 in the locking position; the electromagnetic coil 54 is used to move the intermediate retaining member 52 from the locking position to the unlocking position; the intermediate retaining member 52 has a first engaging portion 501, and the inner ring 2 has a second engaging portion 22. When the intermediate retainer 5 is in the locking position, the first engaging portion 501 and the second engaging portion 22 cooperate to cause the inner ring 2 to drive the intermediate retainer 5 to rotate; the intermediate retaining member 52 has a mating stud 502 extending toward the inner ring 2. There are a plurality of mating studs 502, and the plurality of mating studs 502 are evenly spaced along a first axis. A first engaging portion 501 is formed on each mating stud 502. The side of the inner ring 2 away from the intermediate retainer 5 has a mating ring 23, and a second engaging portion 22 that mates with the first engaging portion 501 is formed on the mating ring 23; the first engaging portion 501 is a mating groove formed at the end of the mating stud 502, and the second engaging portion 22 is a mating protrusion formed on the mating ring 23. A limiting space is defined between two adjacent mating studs 502, and the roller 4 is rotatably located in the limiting space.

[0056] For the clutch 100 according to a specific embodiment of the present invention, by using the movement of the intermediate retainer 5 to control the disconnection and connection of power, such a design is simple, ingenious, reliable and practical; by restricting the position of the roller 4 through the intermediate retainer 5, power transmission is carried out, so that there will be no torque impact phenomenon, making the power transmission smoother and prolonging the service life of the clutch 100.

[0057] The present invention also proposes a differential 200 having the above clutch 100.

[0058] Next, refer to Figures 1-6 to describe the differential 200 according to an embodiment of the present application.

[0059] The differential 200 according to an embodiment of the present invention includes: a second housing 6, a transmission ring 7, a connecting shaft 8, a planetary gear 10, a half shaft gear 9, and a clutch 100; in this embodiment, a placement space is defined inside the second housing 6; the transmission ring 7 is located in the placement space and is fixedly connected to the outer ring 3; the connecting shaft 8 is fixed inside the transmission ring 7 to rotate synchronously with the transmission ring 7; the planetary gear 10 is sleeved on the connecting shaft 8 and is rotatable relative to the connecting shaft 8; the half shaft gear 9 is arranged in the placement space and meshes with the planetary gear 10. By providing the clutch 100 of the above embodiment, the torque impact phenomenon can be avoided, making the power transmission smoother.

[0060] In an embodiment of the present invention, as Figures 1 to 6As shown, the half shaft gear 9 includes: a first half shaft gear 91 and a second half shaft gear 92 that are coaxial. The first half shaft gear 91 and the second half shaft gear 92 are respectively installed on the first housing 1 and the second housing 6.

[0061] The present invention also provides a vehicle having the above differential 200.

[0062] For the vehicle according to the embodiment of the present invention, by providing the differential 200 of the above embodiment, the power transmission can be made more stable and smooth.

[0063] The other components and operations of the clutch 100, the differential 200 and the vehicle according to the embodiment of the present invention are known to those of ordinary skill in the art and will not be described in detail here.

[0064] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0065] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A clutch, characterized in that, Comprising: A first housing having an installation space therein; An inner ring fixed within the installation space; An outer ring sleeved outside the inner ring, with an accommodation space defined between the inner ring and the outer ring, and the accommodation space having a rolling position and a jamming position; Rollers located within the accommodation space, wherein when the rollers are in the rolling position, the rollers are adapted to rotate, and when the rollers are in the jamming position, the rollers are jammed between the inner ring and the outer ring; An intermediate retainer movably installed between the inner ring and the outer ring and having a locking position and an unlocking position, wherein when the intermediate retainer is in the locking position, it is used to restrict the rollers to the rolling position, and when the intermediate retainer is in the unlocking position, the rollers are adapted to move from the rolling position to the jamming position; The intermediate retainer has a first mating portion, and the inner ring has a second mating portion. When the intermediate retainer is in the locking position, the first mating portion and the second mating portion cooperate to cause the inner ring to drive the intermediate retainer to rotate; The intermediate retainer has mating convex columns extending towards the inner ring, there are a plurality of the mating convex columns, and the plurality of mating convex columns are evenly spaced along a first axis. Each of the mating convex columns is formed with the first mating portion, and the side surface of the inner ring away from the intermediate retainer has a mating ring, and the mating ring is formed with the second mating portion that cooperates with the first mating portion; the first mating portion is a mating groove formed at the end of the mating convex column, and the second mating portion is a mating protrusion formed on the mating ring; a limiting space is defined between two adjacent mating convex columns, and the rollers are rotatably located within the limiting space.

2. The clutch according to claim 1, wherein The outer side surface of the inner ring has a first limiting plane perpendicular to the straight line in the radial direction of the inner ring, or the inner side surface of the outer ring has a second limiting plane perpendicular to the straight line in the radial direction of the outer ring.

3. The clutch according to claim 1, characterized in that, The clutch has a first axis, and there are a plurality of the accommodation spaces, and the plurality of accommodation spaces are evenly spaced around the first axis. Wherein, at least one of the rollers is provided in each of the accommodation spaces.

4. The clutch according to claim 1, characterized in that, The rollers are balls or rollers. When the rollers are rollers, the second axis of the rollers is parallel to the first axis of the clutch.

5. The clutch according to claim 1, characterized in that, The intermediate retainer includes: A retaining plate; An intermediate retaining member adapted to reciprocate between the locking position and the unlocking position, and the intermediate retaining member has mating convex columns extending towards the inner ring; An elastic member installed between the retaining plate and the intermediate retaining member for keeping the intermediate retaining member in the locking position; An electromagnetic coil for moving the intermediate retaining member from the locking position to the unlocking position.

6. A differential, characterized in that, Comprising: The clutch according to any one of claims 1-5; A second housing defining a placement space therein; A transmission ring located within the placement space and fixedly connected to the outer ring; A connecting shaft, which is fixed within the transmission ring to rotate synchronously with the transmission ring; A planetary gear, which is sleeved on the connecting shaft and is rotatable relative to the connecting shaft; A side gear, which is arranged within the placement space and meshes with the planetary gear.

7. The differential according to claim 6, characterized in that, The side gear includes a first side gear and a second side gear that are coaxial, and the first side gear and the second side gear are respectively installed on the first housing and the second housing.

8. A vehicle, characterized in that, It includes the differential described in any one of claims 6-7.

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