Sliding lock connecting structure of electromagnetic self-locking differential mechanism

Abstract

The utility model belongs to the technical field of automobile transmission, and particularly relates to an electromagnetic self-locking differential mechanism sliding lock connecting structure which comprises a differential mechanism assembly, an electromagnetic driver, a sliding lock and a magnetism isolating push plate. The differential assembly comprises a shell, and the shell is provided with an end face and a mounting position extending outwards from the end face. The electromagnetic driver is arranged at the mounting position; the sliding lock is arranged in the shell, the sliding lock is provided with a plurality of connecting pieces, and the connecting pieces penetrate through the end face in a sliding mode and extend towards the electromagnetic driver; the magnetic isolation push plate is arranged between the electromagnetic driver and the sliding lock, the magnetic isolation push plate is attached to the electromagnetic driver but not connected with the electromagnetic driver, and the magnetic isolation push plate is provided with a limiting piece connected with the corresponding connecting piece and used for connecting the magnetic isolation push plate and the sliding lock to form a whole. The magnetism isolating push plate is used for isolating magnetism of the electromagnetic driver from being conducted to the sliding lock. And the magnetic isolation push plate has a magnetic isolation effect on the electromagnetic driver, so that the situation that the sliding lock adsorbs iron powder, scrap iron and the like due to the fact that magnetism is transmitted to the sliding lock is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile transmission technology, especially relate to a electromagnetic self -lock differential mechanism slide lock connecting structure. BACKGROUND

[0002] Differential gear mechanisms can be provided in axle assemblies and are used to transmit torque from a drive shaft to a pair of output shafts. The drive shaft can drive the differential by using bevel gears that mesh with ring gears mounted to the housing of the differential. In automotive applications, the differential allows the tires mounted at either end of the axle assembly to rotate at different speeds. This is important when the vehicle turns because the outer tire travels a greater distance on the arc than the inner tire. Therefore, the outer tire must rotate faster than the inner tire to compensate for the greater distance traveled. The differential includes a differential housing and a gear arrangement that allows torque to be transmitted from the drive shaft to the output shafts while allowing the output shafts to rotate at different speeds as needed. The gear arrangement can generally include a pair of side gears that are mounted for rotation with the respective output shafts. A series of cross pins or pinion shafts are fixedly mounted to the differential housing for rotation therewith. A corresponding plurality of pinions are mounted for rotation with the pinion shafts and are in meshing relationship with both side gears.

[0003] Ordinary differential, although can allow left and right wheels to rotate at different speeds, but when one of the wheels idling, the other on the good road surface wheel also can not get torque, the car loses the power to travel. To avoid this situation, if two wheels are connected together, power at least can be transmitted to the other side wheel, so that the car gets the power to travel, thus extricate from the predicament, so the differential needs to be provided with various kinds of differential locking mechanism. For example, the differential lock structure is developed earliest by Eaton Company of the United States, and is applied to off-road vehicles etc. And after decades of development, the differential can realize automatic, arbitrary switching differential lock clutch state by using electromagnetic technology.

[0004] For example, the Chinese patent document with publication number CN119435671A discloses an electromagnetic differential lock for a car, which includes a housing and a differential mechanism arranged in the housing, a locking mechanism arranged on one side of the housing for locking the differential mechanism, and an electromagnetic assembly arranged at the outer end of the housing and acting on the locking mechanism to control the action of the locking mechanism. The differential mechanism includes a first half shaft gear and a second half shaft gear arranged in the housing, and the locking mechanism includes a coupling ring arranged at the outer end of the first half shaft gear. The coupling ring and the opposite side of the first half shaft gear are provided with matching tooth structures, and a wave spring is arranged between the coupling ring and the first half shaft gear. The outer end of the coupling ring is annularly distributed with a pawl, which passes through the corresponding pawl hole of the housing to connect with the electromagnetic assembly. The electromagnetic assembly controls the movement of the coupling ring through the pawl to realize the locking and fixing of the differential. The electromagnetic assembly includes a spacer plate arranged at the outer end of the shell cylinder and an electromagnetic coil arranged at the outer end of the spacer plate. The electromagnetic coil is fixed on the axle housing by a snap pin and is stationary relative to the axle housing. The electromagnetic coil is sleeved on the shell cylinder through a coil support. The coil support and the shell cylinder are gap-fitted. The coil support is provided with an end face thrust bearing on the side facing the spacer plate. The spacer plate and the shell cylinder are gap-fitted, and the spacer plate is connected to the coil support on one side through the end face thrust bearing, so that the spacer plate is rotatably installed on the shell cylinder. Under normal driving conditions, the main housing drives the coupling ring to rotate, and the coupling ring is pressed against the spacer plate by the wave spring, driving the spacer plate to rotate together. When the differential locking function is activated, the electromagnetic coil attracts the spacer plate to generate braking, so that a speed difference is generated between the spacer plate and the main housing. The coupling ring is arranged in the spiral groove through the spherical surface at the end of the pawl, and the inclined end surface of the spiral groove is used to push the coupling ring to axially displace, so that the coupling ring and the first half shaft gear are locked. When resetting, the electromagnetic coil is de-energized, and the coupling ring moves under the push of the wave spring, so that the first coupling tooth and the second coupling tooth are disengaged.

[0005] For example, the Chinese utility model patent application with the publication number CN116928313A discloses a self-locking differential, which comprises a differential housing and a differential cover fixed to one side of the differential housing, and a differential gear mechanism is arranged between the differential housing and the differential cover. The differential gear mechanism comprises a left half shaft gear arranged on one side of the differential cover, a right half shaft gear arranged on one side of the differential housing, and a planetary gear mechanism arranged between the left half shaft gear and the right half shaft gear. The planetary gear mechanism comprises an integrated cross shaft, a sleeve fixed to the axis of the cross shaft, and a planetary gear fixed to the cross shaft. The planetary gear is engaged between the left half shaft gear and the right half shaft gear. An axle hole is left between the differential housing and the differential cover, and the cross shaft penetrates the axle hole. A first positioning cylinder is fixed to one side of the left half shaft gear and inserted into the sleeve. A second positioning cylinder is fixed to one side of the right half shaft gear and penetrates the differential housing. A driving mechanism is arranged on one side of the differential housing, and a push piece is arranged on one side of the driving mechanism. The driving mechanism is used to drive the push piece to control the movement of the right half shaft gear away from the planetary gear, so that the right half shaft gear is disengaged from the planetary gear. A slide lock is arranged between the right half shaft gear and the differential housing.

[0006] In the technical solutions disclosed in the above two patent documents, an electromagnetic driver is used to drive the slide lock to lock the half shaft gear, and a push structure is used to achieve this. For example, when the differential locking function is activated, the electromagnetic coil attracts the spacer plate to generate braking, so that a speed difference is generated between the spacer plate and the main housing. The combination ring is abutted against the spiral groove through the spherical surface at the end of the jaw, and the combination ring is pushed to move axially by using the inclined end surface of the spiral groove, so that the combination ring is locked with the first half shaft gear. It can be seen that the spacer plate or the push plate is made of a magnetically conductive material. Therefore, the magnetism of the electromagnetic driver is conducted to the slide lock, the half shaft gear, etc. through the intermediate plate, so that the slide lock and the half shaft gear carry the magnetism to attract the iron powder and iron filings generated by the wear of the differential during operation, which is set to be attracted into the electromagnetic driver, causing wear, jamming, etc. of the differential assembly. Utility model content

[0007] The utility model aims at providing an electromagnetic self-locking differential slide lock connecting structure, which solves the technical problem that the self-locking differential in the prior art causes the iron powder generated by the wear of the differential to be attracted to the surface of the half shaft gear and the slide lock, and to be attracted into the electromagnetic driver.

[0008] To achieve the above object, the utility model discloses a kind of electromagnetic self-locking differential mechanism slide lock connecting structure, including differential assembly, electromagnetic driver, slide lock and magnetic separation push plate;The differential assembly includes housing, the housing has one end surface and mounting site extending from the end surface outward;The electromagnetic driver is located at the mounting site;The slide lock is located in the housing, the slide lock is equipped with multiple connecting pieces, the connecting piece slides through the end surface, and extends to the electromagnetic driver;The magnetic separation push plate is located between the electromagnetic driver and the slide lock, and the magnetic separation push plate is attached to the electromagnetic driver, but not connected, the magnetic separation push plate is equipped with the limiting piece corresponding to the connecting piece, for connecting the magnetic separation push plate and the slide lock form a whole;The magnetic separation push plate is used to isolate the magnetic property of the electromagnetic driver to the slide lock.

[0009] Further, the end of the connecting piece is in abutment with the magnetic separation push plate.

[0010] Further, the magnetic separation push plate is 304 stainless steel plate, the magnetic separation push plate is punched and bent to form the limiting piece to one side of the slide lock, so that the limiting piece has elasticity.

[0011] Further, the outer side of the connecting piece is provided with a clamping groove, and the end of the limiting piece is provided with a clamping portion, and the clamping portion is clamped with the clamping groove.

[0012] Further, the outer side of the connecting piece is further provided with a guide groove, one end of the guide groove extends to the end of the clamping groove, and the other end extends to the end of the connecting piece;The guide groove includes an inclined guide surface and a limiting surface, the guide surface is lower than the clamping groove, and the limiting surface is higher than the clamping groove and forms a limiting end surface for limiting the clamping portion;The guide groove limits the radial rotation of the limiting piece.

[0013] Further, the free end of the limiting piece is inclined inwardly, so that the limiting piece forms an included angle of 3° to 5° with the shaft center of the differential assembly.

[0014] The electromagnetic self-locking differential mechanism slide lock connecting structure provided by the utility model embodiment has at least the following technical effects:

[0015] 1. A magnetic separation push plate is arranged between the electromagnetic driver and the slide lock, and the limiting piece extending from the magnetic separation push plate connects the slide lock, so that the magnetic separation push plate can play a magnetic isolation effect on the electromagnetic driver, avoiding the magnetic property from being conducted to the slide lock and causing the slide lock to adsorb iron powder, iron filings and the like. And the problem of adsorbing iron powder by the electromagnetic driver is isolated by the magnetic separation push plate. Therefore, the problems of jamming and wear of the differential assembly and the electromagnetic driver caused by adsorbing iron powder are avoided.

[0016] 2. A plurality of connecting members are extended on one side of the slide lock, and the connecting members are connected with the limiting members, so that the magnetic conduction of the electromagnetic driver to the slide lock can be further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 The structural diagram of the electromagnetic self-locking differential slide lock connecting structure provided by the embodiment of the present application.

[0019] Figure 2 The sectional view of the electromagnetic self-locking differential slide lock connecting structure provided by the embodiment of the present application.

[0020] Figure 3 The structural diagram of the shell of the electromagnetic self-locking differential slide lock connecting structure provided by the embodiment of the present application.

[0021] Figure 4 The structural diagram of the electromagnetic driver of the electromagnetic self-locking differential slide lock connecting structure provided by the embodiment of the present application.

[0022] Figure 5 The structural diagram of the slide lock of the electromagnetic self-locking differential slide lock connecting structure provided by the embodiment of the present application. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0024] In the description of the embodiments of the present application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like 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 embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0025] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically defined.

[0026] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0027] In an embodiment of the electromagnetic self-locking differential gear slide lock connection structure of the present application, please refer to Figures 1 to 5 , the electromagnetic self-locking differential gear slide lock connection structure includes a differential assembly 100, an electromagnetic driver 200, a slide lock 300 and a magnetic isolation push plate 400. The differential assembly 100 includes a housing 110, the housing 110 has an end face 101 and a mounting position 102 extending outward from the end face 101. The electromagnetic driver 200 is arranged in the mounting position 102; the slide lock 300 is arranged in the housing 110, the slide lock 300 is provided with a plurality of connecting pieces 310, the connecting pieces 310 slide through the end face 101 and extend to the electromagnetic driver 200. The magnetic isolation push plate 400 is arranged between the electromagnetic driver 200 and the slide lock 300, and the magnetic isolation push plate 400 is attached to the electromagnetic driver 200 but not connected, the magnetic isolation push plate 400 is provided with a limiting piece 410 connected to the corresponding connecting piece 310, the limiting piece 410 is used to connect the magnetic isolation push plate 400 and the slide lock 300 to form a whole. The magnetic isolation push plate 400 is used to isolate the magnetic conduction of the electromagnetic driver 200 to the slide lock 300. Because the magnetic isolation push plate 400 is arranged between the electromagnetic driver 200 and the slide lock 300, and the limiting piece 410 extending from the magnetic isolation push plate 400 connects the connecting piece 310 of the slide lock 300, the magnetic isolation effect of the electromagnetic driver 200 can be achieved through the magnetic isolation push plate 400, so as to avoid the magnetic conduction to the slide lock 300 and the adsorption of iron powder, iron filings and the like. And the problem of adsorbing iron powder by the electromagnetic driver 200 is isolated by the magnetic isolation push plate 400. Therefore, the problems of jamming and wear of the connection between the differential assembly 100 and the electromagnetic driver 400 caused by the adsorption of iron powder are avoided.

[0028] Further, please refer to Figure 2The end of the connecting piece 310 is in abutment with the magnetic isolation push plate 400. In the embodiment, the connecting piece 310 is in abutment with the end side of the magnetic isolation push plate 400, so that the axial movement of the slide lock 400 relative to the magnetic isolation push plate 400 is avoided, and problems such as mutual impact are avoided.

[0029] Further, referring to Figure 4 The magnetic isolation push plate 400 is a 304 stainless steel plate, and the 304 stainless steel has good magnetic isolation effect and good metal properties. The magnetic isolation push plate 400 is punched and bent to form a limiting piece 410 on one side of the slide lock 400, so that the limiting piece 410 has elasticity. Therefore, the limiting piece 410 can be used to clamp the connecting piece 310, so as to fix the connecting piece 310.

[0030] Further, referring to Figure 4 and Figure 5 The outer side of the connecting piece 310 is provided with a clamping groove 311, and the end of the limiting piece 410 is provided with a clamping portion 411, which is clamped with the clamping groove 311.

[0031] Further, referring to Figure 5 The outer side of the connecting piece 310 is further provided with a guide groove 312, one end of the guide groove 312 extends to the end of the clamping groove 311, and the other end extends to the end of the connecting piece 310. The guide groove 312 includes an inclined guide surface and a limiting surface, the guide surface is lower than the clamping groove 311, the limiting surface is higher than the clamping groove 311, and forms a limiting end surface for limiting the clamping portion 411; the guide groove 312 can also prevent the limiting piece 410 from rotating radially. In the embodiment, when the limiting piece 410 is assembled with the connecting piece 310, the limiting piece 410 is guided into the clamping groove 311 from the guide groove 312, and under the elastic action of the limiting piece 410, the limiting piece 410 can be smoothly clamped into the clamping groove 311.

[0032] Further, the free end of the limiting piece 410 is inclined inwardly, so that the limiting piece 410 forms an angle of 3° to 5° with the shaft center of the differential assembly 100. After the limiting piece 410 is assembled with the clamping groove 311, the efficiency of assembly can be increased.

[0033] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electromagnetic self-locking differential slip lock connection structure, characterized by, The differential assembly, electromagnetic driver, slide lock and magnetic isolation push plate; the differential assembly comprises a housing, the housing has an end face and a mounting position extending outward from the end face; the electromagnetic driver is arranged in the mounting position; the slide lock is arranged in the housing, the slide lock is provided with a plurality of connecting pieces, the connecting pieces slide through the end face and extend to the electromagnetic driver; the magnetic isolation push plate is arranged between the electromagnetic driver and the slide lock, and the magnetic isolation push plate is attached to the electromagnetic driver but not connected, the magnetic isolation push plate is provided with a limiting piece corresponding to the connecting piece, for connecting the magnetic isolation push plate and the slide lock to form a whole; the magnetic isolation push plate is used for isolating the magnetic conduction of the electromagnetic driver to the slide lock.

2. The electromagnetic self-locking differential slip lock connection structure according to claim 1, characterized in that: The end of the connecting piece abuts against the magnetic isolation push plate.

3. The electromagnetic self-locking differential slip lock connection structure according to claim 1, characterized in that: The magnetic isolation push plate is a 304 stainless steel plate, the limiting piece is formed by stamping and bending the magnetic isolation push plate to one side of the slide lock, so that the limiting piece has elasticity.

4. The electromagnetic self-locking differential slip lock connection structure according to claim 3, characterized in that: The outer side of the connecting piece is provided with a clamping groove, and the end of the limiting piece is provided with a clamping part, the clamping part is clamped with the clamping groove.

5. The electromagnetic self-locking differential slip lock connection structure according to claim 4, characterized in that: The outer side of the connecting piece is also provided with a guide groove, one end of the guide groove extends to the end of the clamping groove, and the other end extends to the end of the connecting piece; the guide groove comprises an inclined guide surface and a limiting surface, the guide surface is lower than the clamping groove, the limiting surface is higher than the clamping groove and forms a limiting end surface for limiting the clamping part; the guide groove limits the radial rotation of the limiting piece.

6. The electromagnetic self-locking differential slip lock connection structure according to claim 5, characterized in that: The free end of the limiting piece is inclined inward, so that the limiting piece and the shaft center of the differential assembly form an included angle of 3° to 5°.

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