Embedded disc, differential mechanism assembly and automobile

Abstract

The invention provides an embedded disc, a differential assembly and an automobile, the embedded disc comprises an embedded disc main body, the outer side of the embedded disc main body is provided with first combination teeth arranged outwards in the radial direction, and the inner side of the embedded disc main body is provided with second combination teeth arranged inwards in the radial direction. The embedded disc comprises the embedded disc body, the outer side of the embedded disc body is provided with the first combination teeth outwards arranged in the radial direction, and the inner side of the embedded disc body is provided with the second combination teeth inwards arranged in the radial direction, so that the first combination teeth and the second combination teeth can be combined with or disconnected from one element respectively; and compared with the mode that only two functions can be switched in the prior art, the integrated level can be greatly improved, the number and weight of parts are reduced, structural arrangement is more facilitated, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The invention relates to the technical field of differential assemblies, and in particular to an insert plate, a differential assembly and a car. Background Art

[0002] The insert is a disc-shaped component with a specific tooth shape or protrusion. It transmits and interrupts power by combining and separating with other matching components. It can be used in many devices, such as differential assemblies. Existing inserts can only be combined or disconnected with one workpiece to achieve the switching of two functions, which cannot meet the use requirements of multiple function switching. Summary of the invention

[0003] The invention provides an insert plate, a differential assembly and a car, so as to solve the problem that the existing insert plate cannot meet the use requirements of multiple function switching.

[0004] An inlay plate comprises an inlay plate body, wherein the outer side of the inlay plate body is provided with first combining teeth arranged outwardly in a radial direction, and the inner side of the inlay plate body is provided with second combining teeth arranged inwardly in a radial direction.

[0005] Preferably, the insert disc further comprises a guide structure arranged on the insert disc body along the axial direction; the first combining tooth is arranged on the guide structure; and in the axial direction, there is a certain distance between the first combining tooth and the second combining tooth.

[0006] A differential assembly comprises a differential housing, a differential gear, a gear assembly and the insert plate; The differential housing and the differential gear are spaced apart in the axial direction, and the gear assembly is arranged between the differential housing and the differential gear; The insert plate body is movably mounted on the differential housing, the first combining tooth is used to combine with the differential gear, and the second combining tooth is used to combine with the gear assembly.

[0007] Preferably, when the insert plate is located at a first position on the differential housing, the first engaging tooth is not engaged with the differential gear, and the second engaging tooth is not engaged with the gear assembly; When the insert plate is located at the second position on the differential housing, the first engaging tooth is engaged with the differential gear, and the second engaging tooth is not engaged with the gear assembly; When the insert plate is located at a third position on the differential housing, the first engaging tooth is engaged with the differential gear, and the second engaging tooth is engaged with the gear assembly.

[0008] Preferably, the distance between the first coupling tooth and the differential gear is smaller than the distance between the second coupling tooth and the gear assembly; The width of the coupling tooth of the differential gear used for coupling with the first coupling tooth in the axial direction is greater than the width of the coupling tooth of the gear assembly used for coupling with the second coupling tooth in the axial direction.

[0009] Preferably, the differential assembly further comprises an actuator assembly; The actuator assembly includes two electromagnetic clutches, an elastic member and a slider; The sliding block is movably sleeved outside the differential housing and connected to the inlay plate; The two electromagnetic clutches are spaced apart along the axial direction of the differential housing and are respectively connected to the sliders; One end of the elastic member is connected to the inlay plate, and the other end of the elastic member is connected to the differential gear; The two electromagnetic clutches cooperate with the elastic member to adjust the position of the insert plate to switch the function of the differential assembly.

[0010] Preferably, the differential housing comprises a housing body and a guide groove arranged in the axial direction at one end of the housing body close to the differential gear; The insert plate further comprises a guide structure arranged on the first end of the insert plate body in an axial direction, and the guide structure moves along the guide groove.

[0011] Preferably, the differential housing comprises a plurality of connecting protrusions extending in the axial direction from one end of the housing body close to the differential gear; The guide groove is formed between two adjacent connecting protrusions; A limiting groove is provided on the inner side of one end of the connecting protrusion close to the differential gear, which is used to limit the embedded disc body.

[0012] Preferably, the differential gear comprises a gear body, a gear ring portion extending from an outer end of the gear body in a radial direction of the gear body, and a third coupling tooth extending from a side surface of the gear body close to the differential housing; The third combining tooth is used to combine with the first combining tooth.

[0013] Preferably, the gear assembly comprises a planet shaft, a planet gear, a first half shaft, a first half shaft gear, a second half shaft and a second half shaft gear; The planetary shaft is arranged in the differential housing along the radial direction of the differential housing, and the planetary gear is mounted on the planetary shaft; The first half shaft is disposed in the differential housing, the first half shaft gear is mounted on the first half shaft, and the first half shaft gear is combined with the first side of the planetary gear; The second half shaft is inserted into the differential gear, and the second half shaft gear is mounted on the second half shaft; The second side gear is coupled to the second side of the planetary gear. A fourth coupling tooth is disposed on the outer side of the second side gear. The fourth coupling tooth is used for coupling with the second coupling tooth.

[0014] Preferably, the electromagnetic clutch comprises a magnetic ring and a coil; The coil is arranged opposite to the magnetic ring and is used to drive the magnetic ring to move; A force transmission boss is provided on one side of the slider connected to the electromagnetic clutch, and the two electromagnetic clutches are respectively located on both sides of the force transmission boss; In the two electromagnetic clutches, the magnetic ring of the electromagnetic clutch far from the differential gear is in sliding contact with the slider, and the magnetic ring of the electromagnetic clutch close to the differential gear is in fixed contact with the slider.

[0015] Preferably, the actuator assembly further comprises a support housing and three first retaining rings; The support housing is sleeved outside the differential housing, and the two electromagnetic clutches are mounted on the support housing; The three first retaining rings are installed on the supporting shell at intervals, and the magnetic ring of each electromagnetic clutch is located between two adjacent first retaining rings.

[0016] A car comprises the differential assembly.

[0017] In the present embodiment, the insert disc includes an insert disc body, the outer side of the insert disc body is provided with a first engaging tooth arranged outwardly in a radial direction, and the inner side of the insert disc body is provided with a second engaging tooth arranged inwardly in a radial direction, so that the first engaging tooth and the second engaging tooth can be respectively combined with or disconnected from an element, and at least three function switchings can be realized according to the state combination of the two engaging teeth. Compared with the method in the prior art that can only realize two function switchings, it helps to greatly improve the integration, reduce the number and weight of components, and is more conducive to structural layout, and the structure is simple and low in cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 is an isometric view of an embedded plate in one embodiment of the present invention; Figure 2 is a front view of an embedded plate in one embodiment of the present invention; Figure 3 is an isometric view of a differential housing in one embodiment of the present invention; Figure 4 is a cross-sectional view of a differential gear in one embodiment of the present invention; Figure 5 is a structural diagram of a differential assembly in one embodiment of the present invention; Figure 6 1 is a diagram showing three states of a differential assembly in one embodiment of the present invention.

[0020] Among them, 1. embedded disc; 11. embedded disc body; 12. first combining tooth; 13. second combining tooth; 14. guide structure; 2. differential housing; 21. housing body; 22. guide groove; 23. connecting protrusion; 24. limit groove; 3. differential gear; 31. gear body; 32. gear ring; 33. third combining tooth; 4. gear assembly; 41. planetary shaft; 42. planetary gear; 43. first half shaft; 44. first half shaft gear; 45. second half shaft; 46. second half shaft gear; 47. fourth combining tooth; 5. actuator assembly; 51. electromagnetic clutch; 511. magnetic ring; 512. coil; 52. elastic member; 53. slider; 54. support housing; 55. first retaining ring; 56. wear-resistant gasket; 6. bearing; 7. second retaining ring; 8. force transmission boss. Specific implementation methods In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships 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 therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The embodiment of the present invention provides an embedded plate 1, referring to Figure 1 and Figure 2 The insert plate 1 comprises an insert plate body 11, the outer side of the insert plate body 11 is provided with a first coupling tooth 12 arranged outwardly in a radial direction, and the inner side of the insert plate body 11 is provided with a second coupling tooth 13 arranged inwardly in a radial direction.

[0024] The radial direction is the radial direction of the insert plate body 11 .

[0025] As an example, the insert 1 includes an insert body 11, a first combining tooth 12 and a second combining tooth 13; when installed, the insert body 11 is used to be movably installed on the structure to be installed, the first combining tooth 12 extends outward from the outer side of the insert body 11 along the radial direction, and the first combining tooth 12 is used to combine with the first workpiece, and the second combining tooth 13 extends inward from the inner side of the second end of the insert body 11 along the radial direction, and the second combining tooth 13 is used to combine with the second workpiece.

[0026] In this example, the insert disc body 11 is installed on the structure to be installed and can move in the axial direction. When the insert disc body 11 moves to different positions of the structure to be installed, the first combining teeth 12 and the second combining teeth 13 on the insert disc body 11 can be adjusted to different positions accordingly to adjust the state of the first combining teeth 12 and the first workpiece (combination or separation), and adjust the state of the second combining teeth 13 and the second workpiece (combination or separation). According to the multiple state combinations between the two combining teeth and the two workpieces, the purpose of adjusting the switching of the combining state between the structure to be installed and the two workpieces by using one insert disc 1 is achieved, so as to solve the problem in the prior art that multiple insert discs 1 need to be combined with different components, resulting in low equipment integration, increased number and weight of components, and inconvenient layout.

[0027] In this embodiment, the insert disc 1 includes an insert disc body 11, a first coupling tooth 12 arranged on the outer side of the insert disc body 11, and a second coupling tooth 13 arranged on the inner side of the insert disc body 11, so that the first coupling tooth 12 and the second coupling tooth 13 can be respectively coupled to or disconnected from an element, and at least three function switching can be achieved according to the state combination of the two coupling teeth. Compared with the method in the prior art that can only achieve two function switching, it helps to greatly improve the integration, reduce the number and weight of components, and is more conducive to structural layout. The structure is simple and the cost is low.

[0028] In one embodiment, referring to Figure 1 The insert 1 further comprises a guide structure 14 arranged along the axial direction of the insert body 11 ; the first combining tooth 12 is arranged on the guide structure 14 ; in the axial direction, there is a certain distance between the first combining tooth 12 and the second combining tooth 13 .

[0029] As an example, the insert 1 also includes a guide structure 14, which is arranged on the insert body 11 along the axial direction. The guide structure 14 can be movably installed on the structure to be installed, and provides a guide limit for the installation and movement of the insert 1. Specifically, a guide structure 14 (i.e., a guide rail) arranged along the axial direction is provided on the insert body 11, and an open groove arranged along the axial direction is formed between two adjacent guide rails, and the open groove is used to avoid the connection protrusion 23 of the structure to be installed. During installation, a guide groove 22 is provided on the structure to be installed, and a plurality of guide rails are arranged in an annular interval, matching the guide groove 22 on the structure to be installed, and the insert body 11 is installed on the structure to be installed; the first coupling tooth 12 is provided on the guide structure 14, and the guide rail moves axially in the guide groove 22 to realize the movement of the insert 1 along the axial direction, thereby adjusting the position of the first coupling tooth 12 and the second coupling tooth 13; in the axial direction, there is a certain spacing between the first coupling tooth 12 and the second coupling tooth 13, so as to ensure that the first coupling tooth 12 and the second coupling tooth 13 can be respectively combined or disconnected with different positions of an element.

[0030] The embodiment of the present invention provides a differential assembly, referring to Figure 1-6 , including a differential case 2, a differential gear 3, a gear assembly 4 and an insert plate 1; the differential case 2 and the differential gear 3 are spaced apart in the axial direction, and the gear assembly 4 is arranged between the differential case 2 and the differential gear 3; the insert plate body 11 is movably mounted on the differential case 2, the first combining tooth 12 is used to combine with the differential gear 3, and the second combining tooth 13 is used to combine with the gear assembly 4.

[0031] As an example, the insert plate 1 of a conventional differential assembly can only be combined or disconnected with one workpiece, so it can integrate at most conventional differential + disconnection function or conventional differential + differential lock function, and cannot take into account conventional differential + disconnection + differential lock function. The differential assembly in this example includes a differential case 2, a differential gear 3, a gear assembly 4 and an insert plate 1; during installation, the differential case 2 and the differential gear 3 are both installed on the support structure through bearings 6, and the differential case 2 and the differential gear 3 are spaced apart in the axial direction to form an installation space; the gear assembly 4 is arranged in the installation space between the differential case 2 and the differential gear 3, and controls the two half shafts of the gear assembly 4 to produce a speed difference to realize the differential function.

[0032] In this example, the insert disc body 11 is installed on the differential housing 2 and can move toward the differential gear 3 along the axial direction of the insert disc body 11. When the insert disc body 11 moves to different positions of the differential housing 2, the first combining teeth 12 and the second combining teeth 13 on the insert disc body 11 can be adjusted to different positions accordingly to adjust the state (combined or separated) of the first combining teeth 12 and the differential gear 3, and adjust the state (combined or separated) of the second combining teeth 13 and the gear assembly 4. According to multiple state combinations between the two combining teeth and the differential gear 3 and the gear assembly 4, the combining state between the insert disc 1 and the differential gear 3 and the gear assembly 4 can be adjusted by one insert disc 1, so as to solve the problem that in the prior art, multiple insert discs 1 need to be combined with different components, resulting in low equipment integration, increased number and weight of components, and inconvenient layout.

[0033] In this example, the insert disc 1 includes an insert disc body 11, a first combining tooth 12 arranged on the outer side of the insert disc body 11, and a second combining tooth 13 arranged on the inner side of the insert disc body 11, so that the first combining tooth 12 and the second combining tooth 13 can be respectively combined with or disconnected from the differential gear 3 and the gear assembly 4. According to the state combination of the two combining teeth, at least three function switching can be achieved. Compared with the method in the prior art that can only achieve two function switching, it helps to greatly improve the integration, reduce the number and weight of components, and is more conducive to structural layout. The structure is simple and the cost is low.

[0034] In one embodiment, referring to Figure 5 and Figure 6 When the insert plate 1 is located at the first position on the differential housing 2, the first combining tooth 12 is not combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4; when the insert plate 1 is located at the second position on the differential housing 2, the first combining tooth 12 is combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4; when the insert plate 1 is located at the third position on the differential housing 2, the first combining tooth 12 is combined with the differential gear 3, and the second combining tooth 13 is combined with the gear assembly 4.

[0035] As an example, the differential gear 3 is connected to the power input end, the differential housing 2 is connected to the power output end, the disc body 11 is installed on the differential housing 2, and can move toward the differential gear 3 along the axial direction of the disc body 11. When the disc body 11 moves to different positions of the differential housing 2, it is used to realize different function switching, which is specifically performed as follows: when the disc body 11 moves toward the differential gear 3 to the first position on the differential housing 2 along the axial direction of the disc body 11, the first combining tooth 12 is not combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4. At this time, the differential gear 3 is decoupled from the differential housing 2, and the disconnection function is realized; when the disc body 11 moves along the axial direction of the disc body 11 toward the differential gear 3, the first combining tooth 12 is not combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4. When the body 11 moves toward the differential gear 3 in the axial direction to the second position of the differential case 2, the first engaging tooth 12 can be engaged with the differential gear 3, and the second engaging tooth 13 is not engaged with the gear assembly 4. At this time, it is a normal differential function, and the differential case 2 and the differential gear 3 can transmit torque; when the insert plate body 11 moves toward the differential gear 3 in the axial direction of the insert plate body 11 to the third position of the differential case 2, the first engaging tooth 12 can be engaged with the differential gear 3, and the second engaging tooth 13 can be engaged with the gear assembly 4. At this time, the differential lock function is realized, and the insert plate 1 locks the differential case 2, the differential gear 3 and the gear assembly 4 together, and the two half shafts of the gear assembly 4 cannot generate a speed difference. In this example, the first position, the second position and the third position of the differential case 2 are three positions set in sequence along the axial direction of the differential case 2.

[0036] In one embodiment, referring to Figure 5 and Figure 6 , the distance between the first combining tooth 12 and the differential gear 3 is smaller than the distance between the second combining tooth 13 and the gear assembly 4; the axial width of the combining tooth of the differential gear 3 used to combine with the first combining tooth 12 is greater than the axial width of the combining tooth of the gear assembly 4 used to combine with the second combining tooth 13.

[0037] As an example, the insert plate body 11 moves toward the differential gear 3 along the axial direction of the insert plate body 11 on the differential housing 2; when the insert plate body 11 moves to the first position, the first combining tooth 12 is not combined with the combining tooth of the differential gear 3, and the second combining tooth 13 is not combined with the combining tooth of the gear assembly 4, which is a disconnection function; when the insert plate body 11 moves from the first position to the second position, the first combining tooth 12 and the second combining tooth 13 move simultaneously, because the distance between the first combining tooth 12 and the differential gear 3 is smaller than the distance between the second combining tooth 13 and the gear assembly 4, the first combining tooth 12 and the differential gear 3 are not combined. 3 is engaged, and the second engaging tooth 13 is not engaged with the engaging tooth of the gear assembly 4, which is a normal differential function; when the insert plate body 11 moves from the second position to the third position, the first engaging tooth 12 and the second engaging tooth 13 move again at the same time, because the axial width of the engaging tooth of the differential gear 3 used to engage with the first engaging tooth 12 is greater than the axial width of the engaging tooth of the gear assembly 4 used to engage with the second engaging tooth 13, so when the second engaging tooth 13 is engaged with the engaging tooth of the gear assembly 4, the first engaging tooth 12 can still be engaged with the engaging tooth of the differential gear 3 when it moves again, which is a differential lock function. In this example, the first position, the second position and the third position of the differential case 2 are three positions sequentially set along the axial direction of the differential case 2.

[0038] In one embodiment, referring to Figure 5 and Figure 6 The differential assembly also includes an actuator assembly 5; the actuator assembly 5 includes two electromagnetic clutches 51, an elastic member 52 and a slider 53; the slider 53 is movably mounted outside the differential housing 2 and connected to the inlay plate 1; the two electromagnetic clutches 51 are spaced apart along the axial direction of the differential housing 2 and are respectively connected to the slider 53; one end of the elastic member 52 is connected to the inlay plate 1, and the other end of the elastic member 52 is connected to the differential gear 3; the two electromagnetic clutches 51 and the elastic member 52 cooperate to adjust the position of the inlay plate 1 to switch the function of the differential assembly.

[0039] As an example, the differential assembly also includes an actuator assembly 5; when installed, the actuator assembly 5 is connected to the inlay plate 1, and by controlling the working state of the actuator assembly 5, the position of the inlay plate 1 can be adjusted so that it can work in three different positions, so that the inlay plate 1 can be combined with different components to realize the three functions of switching the differential assembly: conventional differential, disconnection and differential lock; three-in-one functional integration is realized in the differential assembly, which greatly enhances the competitiveness of the product. Specifically, when the actuator assembly 5 controls the disc body 11 to move to the first position on the differential housing 2, the first combining tooth 12 is not combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4. At this time, the differential gear 3 is decoupled from the differential housing 2, and the disconnection function is realized; when the actuator assembly 5 controls the disc body 11 to move to the second position on the differential housing 2, the first combining tooth 12 is combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4. At this time, the differential housing 2 and the differential gear 3 can transmit torque, and the conventional differential function can be realized; when the actuator assembly 5 controls the disc body 11 to move to the third position on the differential housing 2, the first combining tooth 12 is combined with the differential gear 3, and the second combining tooth 13 is combined with the gear assembly 4. At this time, the differential lock function is realized, and the disc 1 locks the differential housing 2, the differential gear 3 and the gear assembly 4 together, and the two half shafts of the gear assembly 4 cannot produce a speed difference.

[0040] In this example, the actuator assembly 5 includes two electromagnetic clutches 51, an elastic member 52 and a slider 53; when installed, the slider 53 is movably mounted outside the differential housing 2 and connected to the insert plate 1 to push the insert plate 1 to move; the two electromagnetic clutches 51 are spaced apart along the axial direction of the differential housing 2 and are respectively connected to the slider 53; when either of the two electromagnetic clutches 51 is working, the slider 53 can be driven to move, thereby pushing the insert plate 1 to move toward the position of the differential gear 3; one end of the elastic member 52 is connected to the insert plate 1, and the other end of the elastic member 52 is connected to the differential gear 3. When either of the two electromagnetic clutches 51 is not working, the elasticity of the elastic member 52 can be used to drive the insert plate 1 to reset. The two electromagnetic clutches 51 and the elastic member 52 cooperate to adjust the position of the insert plate 1 to achieve the function of switching the differential assembly. In addition, a second retaining ring 7 is provided on the differential gear 3, and the other end of the elastic member 52 is connected to the second retaining ring 7. The second retaining ring 7 provides an installation position for the elastic member 52 and can also limit the inlay plate 1 to prevent it from moving out of bounds.

[0041] For example, one of the two electromagnetic clutches 51 is a first electromagnetic clutch and the other is a second electromagnetic clutch; when the first electromagnetic clutch is working and the second electromagnetic clutch is not working, the slider 53 can be driven to move a position, so that the slider 53 pushes the inlay plate 1 to move along the axial direction of the inlay plate body 11 toward the differential gear 3 to the second position on the differential case 2, so that the first combining tooth 12 is combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4. At this time, the elastic member 52 is compressed, and the differential gear 3 drives the differential case 2 to rotate through the inlay plate 1, and the differential case 2 drives the planetary gear 42 to rotate around the planetary shaft 41, which can drive the first half-shaft gear 44 and the second half-shaft gear 46 to rotate, thereby driving the first half-shaft 43 and the second half-shaft 45 to rotate. At this time, the differential case 2 and the differential gear 3 can transmit torque, and the conventional differential function can be realized; when the first electromagnetic clutch and the second electromagnetic clutch are in a state of rotation, the first half-shaft gear 44 and the second half-shaft gear 46 are in a state of rotation, and the first half-shaft gear 43 and the second half-shaft gear 45 are in a state of rotation ... first half-shaft gear 44 and the second half-shaft gear 46 are in a state of rotation, and the first half-shaft gear 43 and the second half-shaft gear 45 are in a state of rotation, the first half The first electromagnetic clutch does not work, and the elasticity of the elastic member 52 is used to reset the insert plate 1, and the differential gear 3 is decoupled from the differential housing 2, realizing the disconnection function; when the first electromagnetic clutch works, the slider 53 is driven to move one position, so that the slider 53 pushes the insert plate 1 to move along the axial direction of the insert plate body 11 toward the differential gear 3 to the second position on the differential housing 2, and the second electromagnetic clutch works, driving the slider 53 to continue to move to the next position, so that the slider 53 pushes the insert plate 1 to move along the axial direction of the insert plate body 11 toward the differential gear 3 to the third position on the differential housing 2. At this time, the first combination tooth 12 is combined with the differential gear 3, and the second combination tooth 13 is combined with the second combination tooth 13 of the second half shaft gear 46. The insert plate 1 locks the differential housing 2, the differential gear 3 and the second half shaft gear 46 together, and the first half shaft 43 and the second half shaft 45 cannot produce a speed difference, so the differential lock function can be realized. This example realizes the control of the three positions of the insert plate 1 through the ingenious design of the dual electromagnetic clutch 51 and the elastic member 52.

[0042] In one embodiment, referring to Figure 3 The differential housing 2 includes a housing body 21 and a guide groove 22 arranged along the axial direction at one end of the housing body 21 close to the differential gear 3; the insert plate 1 also includes a guide structure 14 arranged along the axial direction on the first end of the insert plate body 11, and the guide structure 14 moves along the guide groove 22.

[0043] As an example, the differential housing 2 includes a housing body 21 and a guide groove 22 arranged along the axial direction at one end of the housing body 21 close to the differential gear 3; the housing body 21 is installed on the support structure through the bearing 6, as the main component of the installation space, for installing the gear assembly 4; the insert plate 1 also includes a guide structure 14 arranged on the first end of the insert plate body 11 along the axial direction, and the guide structure 14 of the insert plate 1 can be movably installed in the guide groove 22, and the insert plate body 11 of the insert plate 1 is located on the side of the housing body 21 close to the differential gear 3, so that the installation and movement of the insert plate 1 are provided with a guide limit. Among them, the guide groove 22 can be set as a rectangular tooth groove.

[0044] In one embodiment, referring to Figure 3 The differential housing 2 includes a plurality of connecting protrusions 23 extending in the axial direction from one end of the housing body 21 close to the differential gear 3, and the guide groove 22 is formed between two adjacent connecting protrusions 23; a limiting groove 24 is provided on the inner side of one end of the connecting protrusion 23 close to the differential gear 3 for limiting the embedded disc body 11.

[0045] As an example, the differential housing 2 further includes a plurality of connection protrusions 23; the plurality of connection protrusions 23 extend in the axial direction from one end of the housing body 21 close to the differential gear 3, and a guide groove 22 is formed between two adjacent connection protrusions 23; accordingly, a guide structure 14 arranged in the axial direction is provided at the first end of the insert plate body 11, and an open groove arranged in the axial direction is formed between two adjacent guide structures 14, and the open groove is used to avoid the connection protrusions 23 of the differential housing 2, and the guide structure 14 is assembled in the guide groove 22 and moves along the guide groove 22. A limiting groove 24 is provided on the inner side of one end of the connection protrusion 23 close to the differential gear 3, which is used to limit the position of the insert plate body 11. In this example, the end of the connection protrusion 23 is also used to support the differential gear 3, and can limit the position between the differential gear 3 and the differential housing 2.

[0046] In one embodiment, referring to Figure 4 The differential gear 3 includes a gear body 31, a gear ring portion 32 extending from the outer end of the gear body 31 along the radial direction of the gear body 31, and a third combining tooth 33 extending from a side surface of the gear body 31 close to the differential case 2; the third combining tooth 33 is used to combine with the first combining tooth 12.

[0047] As an example, the differential gear 3 includes a gear body 31, a ring gear portion 32 and a third combining tooth 33; when installed, the gear body 31 is installed on the supporting structure through the bearing 6 and is arranged opposite to the differential housing 2; the ring gear portion 32 extends from the outer end of the gear body 31 along the radial direction of the gear body 31, and the ring gear portion 32 is used to combine with other gear structures; the third combining tooth 33 extends from a side of the gear body 31 close to the differential housing 2, and the third combining tooth 33 is used to combine with the first combining tooth 12. At this time, the differential housing 2 and the differential gear 3 can transmit torque, and the conventional differential function can be realized.

[0048] In one embodiment, referring to Figure 5 and Figure 6 The gear assembly 4 includes a planetary shaft 41, a planetary gear 42, a first half shaft 43, a first half shaft gear 44, a second half shaft 45 and a second half shaft gear 46; the planetary shaft 41 is arranged in the differential case 2 along the radial direction of the differential case 2, and the planetary gear 42 is mounted on the planetary shaft 41; the first half shaft 43 is passed through the differential case 2, the first half shaft gear 44 is mounted on the first half shaft 43, and the first half shaft gear 44 is combined with the first side of the planetary gear 42; the second half shaft 45 is passed through the differential gear 3, and the second half shaft gear 46 is mounted on the second half shaft 45; the second half shaft gear 46 is combined with the second side of the planetary gear 42, and a fourth combining tooth 47 is provided on the outer side of the second half shaft gear 46, and the fourth combining tooth 47 is used to combine with the second combining tooth 13.

[0049] As an example, the gear assembly 4 includes a planetary shaft 41, a planetary gear 42, a first half shaft 43, a first half shaft gear 44, a second half shaft 45 and a second half shaft gear 46; during installation, the planetary shaft 41 is arranged in the differential housing 2 along the radial direction of the differential housing 2, and the planetary gear 42 is installed on the planetary shaft 41; the first half shaft 43 is passed through the differential housing 2, the first half shaft gear 44 is installed on the first half shaft 43, and the first half shaft gear 44 is combined with the first side of the planetary gear 42; the second half shaft 45 is passed through the differential gear 3, the second half shaft gear 46 is installed on the second half shaft 45, and the second half shaft gear 46 is combined with the second side of the planetary gear 42. The differential housing 2 is rotated in this way, which can drive the planetary gear 42 to rotate around the planetary shaft 41, so that the first half shaft gear 44 and the second half shaft gear 46 rotate, thereby driving the first half shaft 43 and the second half shaft 45 to rotate. When the insert plate body 11 is located at the first position of the differential case 2, the first combining tooth 12 is not combined with the differential gear 3, and the second combining tooth 13 is not combined with the gear assembly 4. At this time, the differential gear 3 is decoupled from the differential case 2, and the disconnection function is realized; when the insert plate body 11 is located at the second position of the differential case 2, the first combining tooth 12 can be combined with the differential gear 3, and the second combining tooth 13 can be combined with the gear assembly 4. At this time, the differential gear 3 drives the differential case 2 to rotate through the insert plate 1, and the differential case 2 drives the planetary gear 42 to rotate around the planetary shaft 41, which can drive the first half-shaft gear 44 and the second half-shaft gear 46 to rotate, thereby driving the first half-shaft gear 44 and the second half-shaft gear 46 to rotate. The half shaft 43 and the second half shaft 45 rotate, and the differential case 2 and the differential gear 3 can transmit torque at this time, and the conventional differential function can be realized; when the insert plate body 11 is located at the third position of the differential case 2, the first combination tooth 12 can be combined with the differential gear 3, and the second combination tooth 13 can be combined with the second combination tooth 13. At this time, there is no relative rotation between the planetary gear 42 and the first half shaft gear 44 and the second half shaft gear 46, and they rotate together with the differential case 2 and the insert plate 1. The insert plate 1 locks the differential case 2, the differential gear 3 and the second half shaft gear 46 together, and the first half shaft 43 and the second half shaft 45 cannot produce a speed difference, and the differential lock function can be realized. When designing, a fourth combination tooth 47 is provided on the outer side of the second half shaft gear 46, and the fourth combination tooth 47 is used to combine with the second combination tooth 13, so that the insert plate 1 is convenient for combining with the second half shaft gear 46.

[0050] In one embodiment, referring to Figure 5 and Figure 6The electromagnetic clutch 51 includes a magnetic ring 511 and a coil 512; the coil 512 is arranged opposite to the magnetic ring 511, and is used to drive the magnetic ring 511 to move; a force transmission boss 8 is provided on the side where the slider 53 is connected to the electromagnetic clutch 51, and the two electromagnetic clutches 51 are respectively located on both sides of the force transmission boss 8; among the two electromagnetic clutches 51, the magnetic ring 511 of the electromagnetic clutch 51 far away from the differential gear 3 is in sliding connection with the slider 53, and the magnetic ring 511 of the electromagnetic clutch 51 close to the differential gear 3 is fixedly connected with the slider 53.

[0051] As an example, the electromagnetic clutch 51 includes a magnetic ring 511 and a coil 512; when installed, the magnetic ring 511 is connected to the slider 53, and the coil 512 is arranged opposite to the magnetic ring 511. When the coil 512 is energized, an electromagnetic force is generated, which can drive the magnetic ring 511 to move, and the magnetic ring 511 can drive the slider 53 to move, thereby adjusting the position of the inlay plate 1 to achieve the function of switching the differential assembly. Among them, the coil 512 includes a coil body and a coil shell, the coil shell is fixed on the support structure, and the coil body is installed in the coil shell. By energizing the coil body, an electromagnetic force can be generated.

[0052] In this example, a force transmission boss 8 is provided on the side where the slider 53 is connected to the electromagnetic clutch 51, and the two electromagnetic clutches 51 are respectively located on both sides of the force transmission boss 8. Specifically, the magnetic rings 511 of the two electromagnetic clutches 51 are respectively arranged on both sides of the force transmission boss 8, so that the force generated when the magnetic rings 511 of the two electromagnetic clutches 51 move can be transmitted to the slider 53, so as to push the slider 53 to move through the force transmission boss 8. Of the two electromagnetic clutches 51, the magnetic ring 511 of the electromagnetic clutch 51 far from the differential gear 3 is in sliding connection with the slider 53, and the magnetic ring 511 of the electromagnetic clutch 51 close to the differential gear 3 is fixedly connected to the slider 53; in this way, when the two electromagnetic clutches 51 are not working, the slider 53 is located at the first position; when the electromagnetic clutch 51 far from the differential gear 3 is working and the electromagnetic clutch 51 close to the differential gear 3 is not working, the magnetic ring 511 of the electromagnetic clutch 51 far from the differential gear 3 pushes the slider 53 to move to the second position through the force transmission boss 8, and the magnetic ring 511 of the electromagnetic clutch 51 close to the differential gear 3 moves with the slider 53; then the electromagnetic clutch 51 close to the differential gear 3 works, and at this time, the magnetic ring 511 of the electromagnetic clutch 51 close to the differential gear 3 pushes the slider 53 to move to the third position.

[0053] In one embodiment, referring to Figure 5 and Figure 6The actuator assembly 5 also includes a support housing 54 and three first retaining rings 55; the support housing 54 is mounted outside the differential housing 2, and two electromagnetic clutches 51 are installed between the support housing 54 and the differential housing 2; the three first retaining rings 55 are installed on the support housing 54 at intervals, and the magnetic ring 511 of each electromagnetic clutch 51 is located between two adjacent first retaining rings 55.

[0054] As an example, the actuator assembly 5 further includes a support housing 54 and three first retaining rings 55 ; during installation, the support housing 54 is sleeved outside the differential housing 2 to play a supporting role and is used to install other components of the actuator assembly 5 . Two electromagnetic clutches 51 are installed on the supporting shell 54; three first retaining rings 55 are installed on the supporting shell 54 at intervals, and the magnetic ring 511 of each electromagnetic clutch 51 is located between two adjacent first retaining rings 55; among the three first retaining rings 55, a first retaining ring 55 close to the differential gear 3 is located at one end of the supporting shell 54 close to the differential gear 3, and a first retaining ring 55 away from the differential gear 3 is located at one end of the supporting shell 54 away from the differential gear 3, and is located on the side of the slider 53 away from the differential gear 3, and the middle first retaining ring 55 is located between the two electromagnetic clutches 51 and corresponds to the force transmission boss 8; specifically, one of the two electromagnetic clutches 51 is the first electromagnetic clutch, and the other is the second electromagnetic clutch, the electromagnetic clutch 51 away from the differential gear 3 is the first electromagnetic clutch, and the electromagnetic clutch 51 close to the differential gear 3 is the second electromagnetic clutch. The magnetic ring 511 in the first electromagnetic clutch is loosely matched with the slider 53 and can slide freely; the magnetic ring 511 in the second electromagnetic clutch is press-fitted with the slider 53 by interference fit; the coil 512 in the second electromagnetic clutch and the coil 512 in the first electromagnetic clutch are press-fitted on the support housing 54 by interference fit, and before press-fitting, a first retaining ring 55 is installed on the end of the support housing 54 close to the differential gear 3, the magnetic ring 511 in the second electromagnetic clutch is connected to the slider 53, and a first retaining ring 55 is installed in the middle part of the support housing 54, located on the side of the first electromagnetic clutch close to the second electromagnetic clutch, and after the press-fitting is completed, the magnetic ring 511 in the first electromagnetic clutch is installed and connected to the slider 53. Finally, a first retaining ring 55 is press-fitted on the support housing 54, arranged opposite to the electromagnetic clutch 51 far away from the differential gear 3, and located on the side of the slider 53 far away from the differential gear 3, which can provide a limit for the installation of the electromagnetic clutch 51. In this way, the three first retaining rings 55 can limit the magnetic rings 511 of the two electromagnetic clutches 51; among the three first retaining rings 55, the first retaining ring 55 far away from the differential gear 3 can realize the first position of the slider 53, when the magnetic ring 511 of the first electromagnetic clutch moves to abut against the middle first retaining ring 55, the second position of the slider 53 can be limited, and when the magnetic ring 511 of the second electromagnetic clutch moves to abut against the first retaining ring 55 close to the differential gear 3, the third position of the slider 53 can be limited. The three first retaining rings 55 are used to limit three positions respectively, and mechanical limiting is more reliable and safe.

[0055] like Figure 5 and Figure 6 As shown, the specific operation of the actuator assembly 5 switching the differential assembly function is as follows: Disconnection function of differential assembly: When the electric drive where the differential assembly is located does not participate in the driving work of the whole vehicle, the rotational torque transmitted by the left and right wheel ends is disconnected at the differential assembly through the disconnection function, which can reduce the mechanical loss and electrical loss of the electric drive system. The coil 512 in the first electromagnetic clutch is de-energized, and the coil 512 in the second electromagnetic clutch is de-energized. There is no electromagnetic force, and the insert plate 1 is pushed to the first position by the elastic force of the elastic member 52. At this time, the differential housing 2 and the differential gear 3 cannot transmit torque, and the disconnection function of the differential assembly can be realized.

[0056] Conventional differential function of the differential assembly: After the coil 512 in the first electromagnetic clutch is energized, the magnetic ring 511 in the first electromagnetic clutch is subjected to an electromagnetic force in the direction close to the differential gear 3, pushing the slider 53 to move in the direction close to the differential gear 3 until the magnetic ring 511 in the first electromagnetic clutch and the coil 512 in the first electromagnetic clutch are axially limited. At this time, the insert plate 1 is in the second position, and the insert plate 1 is combined with the differential gear 3, so that the differential gear 3 and the differential housing 2 can transmit torque, and the conventional differential function can be realized.

[0057] The differential lock function of the differential assembly: the coil 512 in the first electromagnetic clutch is energized, and the magnetic ring 511 in the first electromagnetic clutch generates an electromagnetic force in the direction close to the differential gear 3, pushing the slider 53 to move in the direction close to the differential gear 3. The coil 512 in the second electromagnetic clutch is energized, and the magnetic ring 511 in the second electromagnetic clutch generates an electromagnetic force in the direction close to the differential gear 3. The magnetic ring 511 in the second electromagnetic clutch and the slider 53 are press-fitted with each other, that is, the slider 53 is driven to move in the direction close to the differential gear 3. At this time, the insert plate 1 is located at the third position, and is combined with the differential gear 3 and the second half-shaft gear 46 at the same time, that is, the differential case 2, the differential gear 3 and the second half-shaft gear 46 are locked together by the insert plate 1, and the first half-shaft 43 and the second half-shaft 45 cannot generate a speed difference, and the differential lock function can be realized. Among them, when the current is large enough, it is also possible to only energize the second electromagnetic clutch to directly drive the slider 53 to move toward the direction close to the differential gear 3 through the magnetic ring 511 of the second electromagnetic clutch, so that the embedded plate 1 is located at the third position, and is combined with the differential gear 3 and the second half-shaft gear 46 at the same time to realize the differential lock function.

[0058] In one embodiment, referring to Figure 5 and Figure 6 The actuator assembly 5 also includes a wear-resistant gasket 56; during installation, the wear-resistant gasket 56 is arranged between the slider 53 and the embedded disk 1, which can improve the wear resistance between the slider 53 and the embedded disk 1 and ensure the service life of the slider 53 and the embedded disk 1.

[0059] An embodiment of the present invention provides a vehicle, including a differential assembly.

[0060] As an example, a car includes a differential assembly; the differential assembly includes a differential housing 2, a differential gear 3, a gear assembly 4 and an insert plate 1; during installation, the differential housing 2 and the differential gear 3 are both installed on the supporting structure through bearings 6, and the differential housing 2 and the differential gear 3 are spaced apart in the axial direction to form an installation space; the gear assembly 4 is arranged in the installation space between the differential housing 2 and the differential gear 3, and the two half shafts of the gear assembly 4 are controlled to produce a speed difference to realize the differential function.

[0061] In this example, the insert disc 1 includes an insert disc body 11, a first combining tooth 12 and a second combining tooth 13 respectively arranged at both ends of the insert disc body 11, the first combining tooth 12 extends outward from the insert disc body 11, and the second combining tooth 13 extends inward from the insert disc body 11, so that the first combining tooth 12 and the second combining tooth 13 can be respectively combined with or disconnected from the differential gear 3 and the gear assembly 4. According to the state combination of the two combining teeth, at least three function switching can be realized. Compared with the method in the prior art that can only realize two function switching, it helps to greatly improve the integration, reduce the number and weight of components, and is more conducive to structural layout. The structure is simple and the cost is low.

[0062] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An inlaid plate, characterized in that: The invention comprises an insert plate body, wherein the outer side of the insert plate body is provided with first combining teeth arranged outwardly in a radial direction, and the inner side of the insert plate body is provided with second combining teeth arranged inwardly in a radial direction.

2. The inlaid plate according to claim 1, characterized in that: The insert plate further comprises a guide structure arranged on the insert plate body along an axial direction; the first combining tooth is arranged on the guide structure; and in the axial direction, a certain distance exists between the first combining tooth and the second combining tooth.

3. A differential assembly, characterized in that: It comprises a differential housing, a differential gear, a gear assembly and an insert plate as claimed in any one of claims 1 to 2; The differential housing and the differential gear are spaced apart in the axial direction, and the gear assembly is arranged between the differential housing and the differential gear; The insert plate body is movably mounted on the differential housing, the first combining tooth is used to combine with the differential gear, and the second combining tooth is used to combine with the gear assembly.

4. The differential assembly according to claim 3, characterized in that: When the insert plate is located at a first position on the differential housing, the first engaging tooth is not engaged with the differential gear, and the second engaging tooth is not engaged with the gear assembly; When the insert plate is located at the second position on the differential housing, the first engaging tooth is engaged with the differential gear, and the second engaging tooth is not engaged with the gear assembly; When the insert plate is located at a third position on the differential housing, the first engaging tooth is engaged with the differential gear, and the second engaging tooth is engaged with the gear assembly.

5. The differential assembly according to claim 4, characterized in that: The distance between the first coupling tooth and the differential gear is smaller than the distance between the second coupling tooth and the gear assembly; The width of the coupling tooth of the differential gear used for coupling with the first coupling tooth in the axial direction is greater than the width of the coupling tooth of the gear assembly used for coupling with the second coupling tooth in the axial direction.

6. The differential assembly according to claim 3, characterized in that: The differential assembly also includes an actuator assembly; The actuator assembly includes two electromagnetic clutches, an elastic member and a slider; The sliding block is movably sleeved outside the differential housing and connected to the inlay plate; The two electromagnetic clutches are spaced apart along the axial direction of the differential housing and are respectively connected to the sliders; One end of the elastic member is connected to the inlay plate, and the other end of the elastic member is connected to the differential gear; The two electromagnetic clutches cooperate with the elastic member to adjust the position of the insert plate to switch the function of the differential assembly.

7. The differential assembly according to claim 3, characterized in that: The differential housing comprises a housing body and a guide groove arranged in the axial direction at one end of the housing body close to the differential gear; The insert plate further comprises a guide structure arranged on the first end of the insert plate body in an axial direction, and the guide structure moves along the guide groove.

8. The differential assembly according to claim 7, characterized in that: The differential housing includes a plurality of connecting protrusions extending in an axial direction from one end of the housing body close to the differential gear; The guide groove is formed between two adjacent connecting protrusions; A limiting groove is provided on the inner side of one end of the connecting protrusion close to the differential gear, which is used to limit the embedded disc body.

9. The differential assembly according to claim 3, characterized in that: The differential gear comprises a gear body, a gear ring portion extending from an outer end of the gear body in a radial direction of the gear body, and a third coupling tooth extending from a side surface of the gear body close to the differential housing; The third combining tooth is used to combine with the first combining tooth.

10. The differential assembly according to claim 3, characterized in that: The gear assembly includes a planet shaft, a planet gear, a first half shaft, a first half shaft gear, a second half shaft, and a second half shaft gear; The planetary shaft is arranged in the differential housing along the radial direction of the differential housing, and the planetary gear is mounted on the planetary shaft; The first half shaft is disposed in the differential housing, the first half shaft gear is mounted on the first half shaft, and the first half shaft gear is combined with the first side of the planetary gear; The second half shaft is inserted into the differential gear, and the second half shaft gear is mounted on the second half shaft; The second side gear is coupled to the second side of the planetary gear. A fourth coupling tooth is disposed on the outer side of the second side gear. The fourth coupling tooth is used for coupling with the second coupling tooth.

11. The differential assembly according to claim 6, characterized in that: The electromagnetic clutch comprises a magnetic ring and a coil; The coil is arranged opposite to the magnetic ring and is used to drive the magnetic ring to move; A force transmission boss is provided on one side of the slider connected to the electromagnetic clutch, and the two electromagnetic clutches are respectively located on both sides of the force transmission boss; In the two electromagnetic clutches, the magnetic ring of the electromagnetic clutch far from the differential gear is in sliding contact with the slider, and the magnetic ring of the electromagnetic clutch close to the differential gear is in fixed contact with the slider.

12. The differential assembly according to claim 11, characterized in that: The actuator assembly also includes a support housing and three first retaining rings; The support housing is sleeved outside the differential housing, and the two electromagnetic clutches are mounted on the support housing; The three first retaining rings are installed on the supporting shell at intervals, and the magnetic ring of each electromagnetic clutch is located between two adjacent first retaining rings.

13. A car, characterized in that: A differential assembly comprising any one of claims 3-12.

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