Electromagnetic differential lock assembly

Abstract

The electromagnetic differential lock assembly comprises a shell assembly, the shell assembly is formed by butt joint of a left shell and a right shell, an electromagnetic coil assembly and a check ring are arranged at the top end of the left shell, a top block is movably connected to the top of the left shell in a penetrating mode, and a spring limiting hole is formed in the left shell; a spring limiting hole is formed in the right shell, a spring sleeve is arranged in the spring limiting hole, a counterbore is formed in the right shell, and the differential mechanism further comprises a transmission assembly which is arranged in the shell assembly.The differential mechanism has the beneficial effects that the implementation mode of the locking function of the differential mechanism is changed, the situation that locking fails due to the fact that the performance is affected by spring abrasion is reduced, and the service life of the differential mechanism is prolonged. And the locking reaction is quicker, the structure of the differential mechanism is simplified, and the machining and manufacturing cost and the assembly difficulty of differential mechanism parts are reduced.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to an electromagnetic differential lock assembly. Background Art

[0002] As one of the core components of the automobile drive assembly, the differential effectively solves the problem of wheel speed difference among the driving wheels under harsh working conditions and turning conditions, ensures the stability of the vehicle during driving, and effectively improves the damage to the vehicle tires.

[0003] The core of realizing the locking function is the differential lock device in the differential. The design of the differential lock in the electromagnetic differential lock is based on the principle of electromagnetic induction. The electromagnetic force generated acts on the components inside the differential to realize the function of differential adjustment. The locking device is mostly composed of a coil, a drive plate, a locking plate and connecting parts.

[0004] According to the Chinese patent: CN113915310A differential locking structure, some existing electronically controlled differential locks, whether in a locked or unlocked state, will have relative movement between the drive plate and the electromagnetic coil, which will increase the loss of the electronically controlled differential lock when idling and working. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an electromagnetic differential lock assembly, which is implemented through the following technical solutions.

[0006] An electromagnetic differential lock assembly includes a shell assembly, which is formed by docking a left shell and a right shell, an electromagnetic coil assembly and a retaining ring are arranged on the top of the left shell, a top block is movably connected through the top of the left shell, a spring limiting hole is opened on the left shell, a spring sleeve is arranged inside the spring limiting hole, a countersunk hole is arranged on the right shell, and a transmission assembly is also included, and the transmission assembly is arranged inside the shell assembly, the transmission assembly includes a cross shaft, a half-shaft gear, a second adjustment gasket, a locking half-shaft gear, a locking plate and a planetary gear, the locking plate is provided with locking plate outer teeth and locking plate inner teeth, and the locking half-shaft gear is provided with locking teeth.

[0007] Preferably, a first threaded hole is opened on the outer surface of the left shell, and a second threaded hole is opened on the outer surface of the right shell. One end of the bolt is connected through the first threaded hole and the second threaded hole, and the left shell and the right shell are crimped and fixed by the penetrating bolt.

[0008] Preferably, a top block groove is opened on the top of the left shell body, and the top block passes through the top block groove and is movably connected to the left shell body. There are four top blocks distributed in a ring, and both ends of the top blocks are in contact between the electromagnetic coil assembly and the locking plate.

[0009] Preferably, a locking plate positioning hole is provided on the left housing, and the locking plate outer teeth arranged on the half-shaft gear are limitedly embedded in the locking plate positioning hole.

[0010] Preferably, a first cross shaft mounting hole is formed on the left shell body, a second cross shaft mounting hole is formed on the right shell body, and the cross shaft is limited in a limiting hole formed by the first cross shaft mounting hole and the second cross shaft mounting hole.

[0011] Preferably, a retaining ring groove is formed on the outer surface of the left shell, the retaining ring is limitedly engaged in the retaining ring groove, and the retaining ring is pressed on the top of the electromagnetic coil assembly.

[0012] Preferably, a positioning hole is provided at one end of the spring sleeve that is embedded in the spring limiting hole, and one end of the spring is limited in the positioning hole.

[0013] Preferably, four planetary gears are provided, and the planetary gears are limitedly connected to the cross shaft through a spherical gasket, and the planetary gears are meshingly connected between the half-shaft gear and the locking half-shaft gear.

[0014] Preferably, the locking teeth are meshed with the inner teeth of the locking plate.

[0015] Preferably, a first adjusting gasket is provided on the side shaft gear, and the first adjusting gasket is squeezed between the right housing and the side shaft gear.

[0016] The beneficial effects of the present invention are: 1. Changing the implementation method of the differential locking function reduces the possibility of locking failure due to spring wear affecting performance, and the locking response is faster.

[0017] 2. The structure of the differential is simplified, and the processing and manufacturing cost of differential parts and the difficulty of assembly are reduced.

[0018] 3. The left housing, the right housing, the locking half-shaft gear and the half-shaft gear can be disassembled and assembled, so that disassembly and assembly and maintenance can be conveniently performed, and parts can be replaced and recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 : A cross-sectional view of a new structure electromagnetic differential lock assembly according to the present invention; Figure 2: An exploded view of a new structure electromagnetic differential lock assembly according to the present invention; Figure 3 : A three-dimensional schematic diagram of the spring sleeve of the present invention; Figure 4 : A three-dimensional schematic diagram of the left housing of the present invention; Figure 5 : A three-dimensional schematic diagram of the right housing of the present invention; Figure 6 : A three-dimensional schematic diagram of the locking half-shaft gear of the present invention; Figure 7 : A three-dimensional schematic diagram of the locking plate of the present invention from another angle.

[0021] The reference numerals are as follows: 1. Cross shaft; 2. Spherical gasket; 3. Half-axle gear; 4. First adjusting gasket; 6. Spring sleeve; 601. Positioning hole; 7. Retaining ring; 8. Left housing; 801. First cross shaft mounting hole; 802. Top block groove; 803. Locking plate positioning hole; 804. Retaining ring groove; 805. First threaded hole; 806. Spring limiting hole; 9. Right housing; 901. Countersunk hole; 902. Second cross shaft mounting hole; 903. Second threaded hole; 10. Spring; 11. Second adjusting gasket; 12. Locking half-axle gear; 1201. Locking tooth; 13. Locking plate; 1301. Locking plate outer tooth; 1302. Locking plate inner tooth; 14. Planetary gear; 15. Top block; 16. Bolt; 17. Electromagnetic coil assembly. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1-7 As shown, the present invention has the following specific embodiments.

[0024] An electromagnetic differential lock assembly includes a shell assembly, which is formed by docking a left shell 8 and a right shell 9. An electromagnetic coil assembly 17 and a retaining ring 7 are arranged on the top of the left shell 8. A top block 15 is movably connected to the top of the left shell 8. A spring limiting hole 806 is opened on the left shell 8. A spring sleeve 6 is arranged inside the spring limiting hole 806. A countersunk hole 901 is arranged on the right shell 9. A transmission assembly is also included, and the transmission assembly is arranged inside the shell assembly. The transmission assembly includes a cross shaft 1, a half-shaft gear 3, a second adjustment gasket 11, a locking half-shaft gear 12, a locking plate 13 and a planetary gear 14. The locking plate 13 is provided with a locking plate outer tooth 1301 and a locking plate inner tooth 1302, and the locking half-shaft gear 12 is provided with a locking tooth 1201.

[0025] Preferably, a first threaded hole 805 is provided on the outer surface of the left housing 8, and a second threaded hole 903 is provided on the outer surface of the right housing 9. One end of the bolt 16 penetrates and connects the second threaded hole 903 and the first threaded hole 805. The left housing 8 and the right housing 9 are crimped and fixed by the penetrating bolt 16. The first threaded holes 805 and 903 can pass through the bolt 16 together, so that the left housing 8 and the right housing 9 can be locked and fixed by the bolt 16. Preferably, a top block groove 802 is opened on the top of the left shell body 8, and the top block 15 passes through the top block groove 802 to be movably connected with the left shell body 8. There are four top blocks 15 distributed in a ring, and both ends of the top block 15 are in contact between the electromagnetic coil assembly 17 and the locking plate 13. The set top block groove 802 can make the top block 15 slide in a limited position, so that the push block of the electromagnetic coil assembly 17 pushes the top block 15 to move.

[0026] Preferably, a locking plate positioning hole 803 is opened on the left shell body 8, and the locking plate outer teeth 1301 set on the half-shaft gear 3 are limitedly embedded in the locking plate positioning hole 803. The set locking plate positioning hole 803 can limit the locking plate outer teeth 1301, so as to facilitate the locking plate 13 to move in the left shell body 8.

[0027] Preferably, a first cross-axis mounting hole 801 is opened on the left shell body 8, a second cross-axis mounting hole 902 is opened on the right shell body 9, and the cross-axis 1 is limited in a limiting hole formed by docking the first cross-axis mounting hole 801 and the second cross-axis mounting hole 902. The first cross-axis mounting hole 801 and the second cross-axis mounting hole 902 cooperate with each other to limit the cross-axis 1.

[0028] Preferably, a retaining ring groove 804 is opened on the outer surface of the left shell body 8, and the retaining ring 7 is limitedly clamped in the retaining ring groove 804, and the retaining ring 7 is squeezed on the top of the electromagnetic coil assembly 17. The set retaining ring groove 804 can limit the connection of the retaining ring 7.

[0029] Preferably, a positioning hole 601 is provided at one end of the spring sleeve 6 embedded in the spring limiting hole 806, and one end of the spring 10 is limited in the positioning hole 601. The spring 10 connected to the spring sleeve 6 can be supported on the locking plate 13, so that the locking plate 13 can be reset without the action of external force.

[0030] Preferably, four planetary gears 14 are provided, and the planetary gears 14 are limitedly connected to the cross shaft 1 through the provided spherical gasket 2, and the planetary gears 14 are meshedly connected between the half-shaft gear 3 and the locking half-shaft gear 12. The provided planetary gears 14 can mesh between the locking half-shaft gear 12 and the half-shaft gear 3, so that the locking half-shaft gear 12 can drive the half-shaft gear 3 to transmit through the planetary gears 14.

[0031] Preferably, the locking teeth 1201 mesh with the inner teeth 1302 of the locking plate, and the meshing of the locking teeth 1201 and the inner teeth 1302 of the locking plate can enable the locking plate 13 and the locking half-shaft gear 12 to mesh and lock with each other.

[0032] Preferably, a first adjusting gasket 4 is provided on the half-shaft gear 3 , and the first adjusting gasket 4 is squeezed between the right housing 9 and the half-shaft gear 3 , and the first adjusting gasket 4 can perform limit adjustment between the connected half-shaft gear 3 and the right housing 9 .

[0033] The overall working principle of the present invention is as follows: like Figure 1 As shown, when power is turned on, the coil on the electromagnetic coil assembly 17 generates electromagnetic force, causing the push block in the assembly to push the top block 15, and the top block 15 to push the locking plate 13, thereby overcoming the elastic force of the spring 10, causing the locking plate 13 to engage with the locking half-shaft gear 12, so that the inside of the differential forms a whole, thereby realizing the locking function of the differential.

[0034] When the power is off, the electromagnetic coil assembly 17 no longer provides electromagnetic force. The spring 10 that acts is compressed and generates elastic force. At this time, the spring 10 resets and the locking plate 13 is fixed to the initial position under the action of the elastic force. The locking plate 13 is disengaged from the locking half-shaft gear 12, and the differential disconnects the locking function.

[0035] In summary, when the locking plate 13 inside the left housing 8 is meshed and connected with the locking half-shaft gear 12, the locking plate 13 can drive the meshed locking half-shaft gear 12 to rotate. Since the locking half-shaft gear 12 is meshed and connected with the planetary gear 14, and the planetary gear 14 is meshed and connected with the half-shaft gear 3, the locking half-shaft gear 12 can drive the connected half-shaft gear 3 to rotate, thereby enabling the reduction transmission to be performed in the housing assembly through the transmission assembly.

[0036] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An electromagnetic differential lock assembly, comprising a housing assembly, characterized in that: The housing assembly is formed by docking a left housing (8) and a right housing (9), the top of the left housing (8) is provided with an electromagnetic coil assembly (17) and a retaining ring (7), the top of the left housing (8) is movably connected with a top block (15), the left housing (8) is provided with a spring limiting hole (806), the inside of the spring limiting hole (806) is provided with a spring sleeve (6), the right housing (9) is provided with a countersunk hole (901), and also includes a transmission assembly, and the transmission assembly is arranged inside the housing assembly, the transmission assembly includes a cross shaft (1), a half-shaft gear (3), a second adjustment gasket (11), a locking half-shaft gear (12), a locking plate (13) and a planetary gear (14), the locking plate (13) is provided with a locking plate outer tooth (1301) and a locking plate inner tooth (1302), and the locking half-shaft gear (12) is provided with a locking tooth (1201).

2. The electromagnetic differential lock assembly according to claim 1, characterized in that: The outer surface of the left housing (8) is provided with a first threaded hole (805), the outer surface of the right housing (9) is provided with a second threaded hole (903), one end of the bolt (16) is connected through the second threaded hole (903) and the first threaded hole (805), and the left housing (8) and the right housing (9) are crimped and fixed by the through-bolt (16).

3. The electromagnetic differential lock assembly according to claim 1, characterized in that: A top block groove (802) is provided on the top of the left shell (8), and the top block (15) passes through the top block groove (802) and is movably connected to the left shell (8). There are four top blocks (15) distributed in an annular pattern, and both ends of the top blocks (15) are in contact between the electromagnetic coil assembly (17) and the locking plate (13).

4. The electromagnetic differential lock assembly according to claim 1, characterized in that: The left housing (8) is provided with a locking plate positioning hole (803), and the locking plate outer teeth (1301) provided on the half-shaft gear (3) are limitedly embedded in the locking plate positioning hole (803).

5. The electromagnetic differential lock assembly according to claim 1, characterized in that: The left housing (8) is provided with a first cross shaft mounting hole (801), the right housing (9) is provided with a second cross shaft mounting hole (902), and the cross shaft (1) is limited in a limit hole formed by the first cross shaft mounting hole (801) and the second cross shaft mounting hole (902) being connected.

6. The electromagnetic differential lock assembly according to claim 1, characterized in that: The outer surface of the left housing (8) is provided with a snap ring groove (804), the retaining ring (7) is limitedly engaged in the snap ring groove (804), and the retaining ring (7) is pressed against the top of the electromagnetic coil assembly (17).

7. The electromagnetic differential lock assembly according to claim 1, characterized in that: A positioning hole (601) is provided at one end of the spring sleeve (6) embedded in the spring limiting hole (806), and one end of the spring (10) is limited in the positioning hole (601).

8. The electromagnetic differential lock assembly according to claim 1, characterized in that: Four planetary wheels (14) are provided, and the planetary wheels (14) are position-limitedly connected to the cross shaft (1) via a spherical gasket (2), and the planetary wheels (14) are meshingly connected between the half-shaft gear (3) and the locking half-shaft gear (12).

9. The electromagnetic differential lock assembly according to claim 1, characterized in that: The locking teeth (1201) mesh with the inner teeth (1302) of the locking plate.

10. The electromagnetic differential lock assembly according to claim 1, characterized in that: A first adjusting gasket (4) is provided on the side shaft gear (3), and the first adjusting gasket (4) is squeezed between the right housing (9) and the side shaft gear (3).

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