CN204403312U - Electromagnetic push no-spin lockup - Google Patents

Abstract

The utility model provides an electromagnetic thrust self-locking differential, which belongs to the technical field of differentials. It solves the problem of poor self-locking effect of the existing differential gear. The electromagnetic thrust self-locking differential includes a differential housing and a differential end cover fastened on the right side of the differential housing. The differential housing is equipped with planetary gears, left half-shaft gears and right half gears. Shaft gear, the right side shaft gear has an extension part that extends axially and extends to the differential end cover. The extension part is sleeved with a lock that is fixed in the circumferential direction of the extension part and is located on the right side of the differential end cover. The movable sleeve, the right end of the differential end cover has a terminal tooth 1, the left end of the locking movable sleeve has a terminal tooth 2 matched with the terminal tooth 1, and the right side of the locking movable sleeve is provided for pushing the locking movable sleeve along the extension The thrust structure of the upper part moves to the left, and a return spring is arranged between the right side shaft gear and the locking movable sleeve. The utility model has the advantages of good locking effect, long service life and the like.

Description

Electromagnetic thrust self-locking differential

technical field

The utility model belongs to the technical field of differentials, and relates to a differential locking mechanism, in particular to an electromagnetic thrust self-locking differential.

Background technique

With the continuous development of automobile manufacturing technology, the output and sales of ATVs and farmer vehicles are increasing day by day, and the transmission power technology of ATVs and farmer vehicles is also constantly innovating. The differential is a device with power transmission and power distribution functions. The main function of the differential is to automatically adjust the speed of the inner and outer wheels when the ATV encounters a turn during driving, so as to ensure that the outer wheels will not Drag on the road to avoid tire wear and tear, so as to ensure the safety factor of the driving vehicle and improve the operating life of the reducer.

However, when the existing differential gear runs into extremely bad road conditions, when a certain bridge of a beach car or a farmer's car runs into muddy and bad road surfaces, it will slip due to insufficient adhesion; Affected by it, the forward driving force does not increase but decreases until the wheels spin at a high speed, causing the traction force of the vehicle to be greatly consumed and less than the driving resistance, so that the other side can only stay on the road, causing the vehicle to Cannot drive forward. And the existing side gears and planetary gears are common bevel gears, and the surface clearance is less when in use, the side gears and planetary gears wear and tear greatly, and the service life is short.

Contents of the invention

The purpose of the utility model is to propose an electromagnetic thrust self-locking differential with good self-locking effect in view of the above-mentioned problems in the existing technology.

The purpose of this utility model can be achieved through the following technical solutions:

The electromagnetic thrust self-locking differential includes a differential housing and a differential end cover fastened on the right side of the differential housing. The differential housing is equipped with planetary gears, left side shaft gears, and the right side gear, characterized in that the right side gear has an extension extending axially and protruding to the end cover of the differential, and the extension is sleeved with a Connected to the locking movable sleeve located on the right side of the differential end cover, the right end of the differential end cover has a terminal tooth 1, and the left end of the locking movable sleeve has a terminal tooth 2 matched with the terminal tooth 1, The right side of the locking movable sleeve is provided with a thrust structure for pushing the locking movable sleeve to move to the left along the extension, and a return spring is provided between the right side shaft gear and the locking movable sleeve.

The planetary gears in this mechanism can be ordinary planetary gears or planetary gears with unequal modules, that is, non-circular planetary gears, and the side gears corresponding to the planetary gears can be ordinary side gears or side gears with unequal modules. That is, non-circular half shaft gears and planetary gear shafts can be straight shafts or cross shafts. Among them, the terminal teeth 1 and 2 can be flat terminal teeth, and can also be concave-convex surface terminal teeth, that is, the terminal tooth 1 is a concave surface terminal tooth, and the terminal tooth 2 is a convex surface terminal tooth, or the terminal tooth 1 is a convex surface terminal tooth, and the terminal tooth is a convex surface terminal tooth. The second tooth is a concave end tooth.

When the thrust structure is working, push the locking movable sleeve to move to the left along the extension part, and the end tooth two on the locking movable sleeve meshes with the end tooth one on the end cover of the differential, and the differential housing and the locking movement Locking is realized under the joint action of the sleeve and the extension of the right side gear.

In the above electromagnetic thrust self-locking differential, the extension part is provided with an axially extending spline 1, and the locking movable sleeve is provided with a spline 2 matched with the spline 1, The second spline is engaged with the first spline.

In the above-mentioned electromagnetic thrust self-locking differential, the differential end cover is provided with an axle difference reduction case, and a support differential is provided between the differential end cover and the axle difference reduction case. The bearing of the transmission end cover, and the above-mentioned thrust structure is arranged in the described axle differential case.

In the above-mentioned electromagnetic thrust self-locking differential, the thrust structure includes a bracket arranged in the axle differential housing, a thrust electromagnetic coil arranged on the bracket and a thrust movable sleeve axially arranged in the thrust electromagnetic coil , the left end of the thrust movable sleeve is facing the above-mentioned locking movable sleeve, and the right end of the thrust movable sleeve is against the bracket.

In the above electromagnetic thrust self-locking differential, the differential end cover has a connecting portion extending radially outward of the differential end cover, and the driven gear is fixedly connected to the connecting portion. The driven gear can be a cylindrical gear, a straight arc gear, a bevel gear or other gears, and the driven gear can be installed on the front or back by any fastening method such as welding, bolt fastening, etc., and the driven gear can also be used as a The differential end cover fits directly to the right side of the differential case.

The working principle of the electromagnetic thrust self-locking differential is as follows:

When the wheel slips, the thrust electromagnetic coil is energized manually or automatically, and the thrust electromagnetic coil generates a magnetic field. Under the action of the magnetic field, the thrust movable sleeve moves in the direction of the locking movable sleeve, and the locking movable sleeve is flexibly pushed along the extension. Moving to the left, the end tooth two on the locking movable sleeve meshes with the end tooth one on the differential end cover, and it is realized under the joint action of the differential case, the locking movable sleeve and the extension of the right side gear locked.

When the thrust electromagnetic coil is closed, the thrust movable sleeve moves to the right end, and the locking movable sleeve moves to the right along the extension part under the action of the return spring, and the end tooth two on the locking movable sleeve and the end tooth on the differential end cover a separation.

Although words such as right side gear, right side, and right end are used in this electromagnetic thrust self-locking differential, in actual use, this electromagnetic thrust self-locking differential can be installed on the right side of the car body for realizing For the locking of the right half shaft, this electromagnetic thrust self-locking differential can also be installed on the left side of the car body to be used for realizing the locking of the left half shaft.

Compared with the prior art, the electromagnetic thrust self-locking differential has the following advantages:

Its structure is compact, and the locking speed is sensitive, which can effectively improve the driving ability of the whole vehicle. The thrust movable sleeve is flexibly pushed, which prevents the motor from being strongly pushed and generates continuous thrust. The end teeth on the cover can be locked once they mesh. The structure is new, miniaturized, and the locking force is increased. It can be applied to amphibious vehicles, off-road vehicles, loading vehicles, engineering vehicles, agricultural vehicles, all-terrain vehicles and other modified vehicles. The unique gearbox, transfer case and front and rear drive axles with differential function have a wide range of applications.

Description of drawings

Fig. 1 is a structural schematic diagram of a preferred embodiment provided by the utility model.

In the figure, 11, differential case; 12, differential end cover; 121, end tooth one; 122, connecting part; 13, planetary gear; 14, left side shaft gear; 15, right side shaft gear; 151 , extension part; 152, spline one; 16, locking movable sleeve; 161, end tooth two; 162, spline two; 17, return spring; 18, axle differential case; 19, bearing; 20, bracket; 21. Thrust electromagnetic coil; 22. Thrust movable sleeve; 3. Driven gear.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

The electromagnetic thrust self-locking differential as shown in Figure 1 includes a differential case 11 and a differential end cover 12 that is fastened on the right side of the differential case 11, and the differential case 11 is provided with Planetary gears 13 , left side gear 14 and right side gear 15 . In this embodiment, the planetary gear 13 can be a common planetary gear 13 or a planetary gear 13 of unequal modulus, that is, a non-circular planetary gear 13, and the side gear corresponding to the planetary gear 13 can be a common side gear or an unequal modulus. Modular side gears are non-circular side gears, and the planetary gear 13 shafts can be straight shafts or cross shafts.

As shown in FIG. 1 , the right side gear 15 has an extension 151 that extends axially and extends to the differential end cover 12 . The locking movable sleeve 16 on the right side of the transmission end cover 12, the right end of the differential end cover 12 has a terminal tooth 121, and the left end of the locking movable sleeve 16 has a terminal tooth 2 161 matched with the terminal tooth 121. In the embodiment, the first end tooth 121 and the second end tooth 161 can be flat end teeth, or can be concave-convex end teeth, that is, the first end tooth 121 is a concave end tooth, the second end tooth 161 has a convex end tooth, or the first end tooth 121 is a convex end tooth, and end tooth two 161 is a concave end tooth. As shown in Figure 1, the extension part 151 is provided with an axially extending spline one 152, and the locking movable sleeve 16 is provided with a spline two 162 matched with the spline one 152. Spline one 152 as described above engages.

The right side of the locking movable sleeve 16 is provided with a thrust structure for pushing the locking movable sleeve 16 to move to the left along the extension 151, and a return spring 17 is arranged between the right side shaft gear 15 and the locking movable sleeve 16, and the thrust structure When working, push the locking movable sleeve 16 to move to the left along the extension part 151, the end tooth 161 on the locking movable sleeve 16 is engaged with the end tooth 121 on the differential end cover 12, and the 11. Locking is realized under the combined action of the locking movable sleeve 16 and the extension 151 of the right side gear 15 .

In the embodiment, as shown in FIG. 1 , an axle differential reduction case 18 is provided on the outer side of the differential end cover 12 , and an axle differential reduction case 18 is provided between the differential end cover 12 and the axle differential reduction case 18 for supporting the differential. The bearing 19 of the end cover 12 and the thrust structure are arranged in the axle differential case 18 .

Specifically, as shown in Figure 1, the thrust structure includes a bracket 20 arranged in the axle differential housing 18, a thrust electromagnetic coil 21 arranged on the bracket 20, and a thrust movable sleeve 22 axially arranged in the thrust electromagnetic coil 21 , the left end of the thrust movable sleeve 22 is facing the locking movable sleeve 16 , and the right end of the thrust movable sleeve 22 leans against the bracket 20 .

As shown in FIG. 1 , the differential end cover 12 has a connecting portion 122 extending radially outward of the differential end cover 12 , and the driven gear 3 is fixedly connected to the connecting portion 122 . The driven gear 3 can be a cylindrical gear, a straight arc gear, a bevel gear or other gears, and the driven gear 3 can be installed on the front or back by any fixed connection method such as welding, bolt fastening, etc. The gear 3 is mounted directly to the right side of the differential case 11 as a differential cover 12 . In this embodiment, as shown in FIG. 1 , the connection portion 122 of the differential end cover 12 , the edge of the differential case 11 and the driven gear 3 are fixedly connected together by bolts.

The working principle of the electromagnetic thrust self-locking differential is as follows:

When the wheel slips, the thrust electromagnetic coil 21 is energized manually or automatically, and the thrust electromagnetic coil 21 generates a magnetic field. Under the action of the magnetic field, the thrust movable sleeve 22 moves in the direction of the locking movable sleeve 16, and the locking movable sleeve is flexibly pushed 16 moves to the left along the extension 151, the end tooth 161 on the locking movable sleeve 16 meshes with the end tooth 121 on the differential end cover 12, and the differential case 11, the locking movable sleeve 16 and Locking is realized under the joint action of the extension portion 151 of the right side shaft gear 15 .

When the thrust electromagnetic coil 21 is closed, the thrust movable sleeve 22 moves to the right end, and the locking movable sleeve 16 moves to the right along the extension portion 151 under the action of the return spring 17, and the terminal tooth 2 161 on the locking movable sleeve 16 is in contact with the differential gear. The end tooth one 121 on the device end cover 12 is separated.

Although words such as right side shaft gear 15, right side, and right end are used in this embodiment, in actual use, this electromagnetic thrust self-locking differential can be installed on the right side of the car body to realize the rotation of the right side shaft. Locking, this electromagnetic thrust self-locking differential can also be installed on the left side of car body to be used for realizing the locking of left axle shaft.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (5)

1. an electromagnetic push no-spin lockup, comprise differential casing (11) and be fastened on the differential mechanism end cap (12) on the right side of differential casing (11), planetary pinion (13) is provided with in described differential casing (11), left half axle gear (14) and right axle shaft gear (15), it is characterized in that, described right axle shaft gear (15) has the extension part (151) axially extending and extend out to differential mechanism end cap (12), described extension part (151) is arranged with and is connected with extension part (151) circumference and is positioned at the locking movable sheath (16) on differential mechanism end cap (12) right side, the right-hand member of described differential mechanism end cap (12) has end tooth one (121), the left end of described locking movable sheath (16) has the end tooth two (161) matched with end tooth one (121), the right side of described locking movable sheath (16) is provided with for promoting locking movable sheath (16) along extension part (151) to the thrust structure of left movement, Returnning spring (17) is provided with between described right axle shaft gear (15) and locking movable sheath (16).

2. electromagnetic push no-spin lockup according to claim 1, it is characterized in that, described extension part (151) is provided with axially extended spline one (152), described locking movable sheath (16) is provided with the spline two (162) arranged that to match with spline one (152), and described spline two (162) engages with described spline one (152).

3. electromagnetic push no-spin lockup according to claim 2, it is characterized in that, the outside of described differential mechanism end cap (12) is provided with vehicle bridge difference and subtracts shell (18), described differential mechanism end cap (12) and vehicle bridge difference subtract the bearing (19) be provided with between shell (18) for supporting differential mechanism end cap (12), and above-mentioned thrust structure is located at described vehicle bridge difference and is subtracted in shell (18).

4. electromagnetic push no-spin lockup according to claim 3, it is characterized in that, described thrust structure comprises the thrust movable sheath (22) be located at vehicle bridge difference and subtracted support (20) in shell (18), be located at the thrust electromagnetic coil (21) on support (20) and be axially located in thrust electromagnetic coil (21), the left end of described thrust movable sheath (22) faces above-mentioned locking movable sheath (16), and the right-hand member of described thrust movable sheath (22) is resisted against on support (20).

5. the electromagnetic push no-spin lockup according to claim 1 or 2 or 3 or 4, it is characterized in that, described differential mechanism end cap (12) has along the outward extending joint in differential mechanism end cap (12) footpath (122), described joint (122) is fixed with driven gear (3).