CN217328388U

CN217328388U - Multifunctional speed reducer assembly

Info

Publication number: CN217328388U
Application number: CN202221189476.0U
Authority: CN
Inventors: 陈黎; 杨超; 刘涛
Original assignee: Hunan Yung Da Intelligent Transmission Ltd By Share Ltd; Luzhou Rongda Intelligent Transmission Co ltd
Current assignee: Luzhou Rongda Intelligent Transmission Co ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-08-30
Anticipated expiration: 2032-05-17

Abstract

The utility model provides a multifunctional speed reducer assembly, which comprises a differential mechanism assembly and a speed reducer shell, wherein the differential mechanism assembly comprises a differential mechanism locking and disconnecting functional module; the differential locking and disconnecting function module comprises: the device comprises an execution motor, a shifting fork assembly, a combination sleeve, a gear ring, a half shaft flange and a left half shaft gear; the execution motor is used for pushing the shifting fork assembly to rotate, and then pushing the combination sleeve to be located at three different positions of a left position, a middle position and a right position, so that functions of differential speed, locking and disconnection are achieved. The multifunctional speed reducer assembly further comprises an electronic P gear function module, and the locking and unlocking functions of the P gear can be realized. Compared with the prior art, the utility model discloses can satisfy the ordinary differential function of four-wheel drive cross country type vehicle simultaneously, locking function when getting rid of poverty, anti-multi-functional special requirement that drags disconnection function and P fender parking function when singly driving to small, reliability height.

Description

Multifunctional speed reducer assembly

Technical Field

The utility model belongs to the technical field of the reduction gear, especially, relate to a multifunctional speed reducer assembly.

Background

Besides the ordinary differential function, the speed reducer of some four-wheel-drive off-road vehicles is required to have a differential locking function so as to meet the requirement of getting rid of the trouble when the wheels skid under special terrains, and the power transmission of a non-drive axle can be cut off when the four-wheel-drive vehicle is driven in a single-wheel-drive mode so as to solve the problem of efficiency loss caused by the fact that the wheels drag the non-drive axle transmission piece reversely.

In the prior art, chinese patent publication No. CN104879464A discloses a speed reducer for a pure electric vehicle, which mainly comprises a box body, a box cover, an input shaft member, an intermediate shaft member, and an output shaft member, wherein an input gear of the input shaft member is fixed on the input shaft, and is engaged with an intermediate shaft input gear of the intermediate shaft member, an intermediate shaft output gear coaxially and fixedly connected with the intermediate shaft input gear is engaged with an output gear of the output member, a differential integrated with the output gear is arranged in the output shaft member, and left and right half-shaft gears of the differential are respectively connected with respective output shafts; a P gear target wheel is mounted on a middle shaft in the middle shaft component, is matched with a locking shifting block of a P gear locking mechanism and is locked after being combined; the input shaft of the input shaft component, the intermediate shaft of the intermediate shaft component and the left and right output shafts of the output component are respectively arranged on the box body and the box cover through respective bearings.

The speed reducer for the pure electric vehicle is of a structure that a common speed reducer is provided with a P gear, has fewer functions, cannot have the functions of differential speed, differential speed locking and disconnection, and cannot meet the requirement of a four-wheel-drive off-road vehicle.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Based on this, the utility model provides a multifunctional speed reducer assembly, this multifunctional speed reducer assembly aim at solving the electric motor car reduction gear among the prior art can not have differential, differential locking, the technical problem of disconnection function simultaneously.

(II) technical scheme

In order to solve the technical problem, the utility model provides a multifunctional speed reducer assembly, which comprises a differential assembly and a speed reducer shell for accommodating the differential assembly, wherein the differential assembly comprises a differential locking and disconnecting functional module; the differential locking and unlocking function module comprises: the device comprises an execution motor, a shifting fork assembly, a combination sleeve, a gear ring, a half shaft flange and a left half shaft gear; the middle part of the shifting fork assembly is hinged with the speed reducer shell through a hinge shaft, the execution motor is connected with one end of the shifting fork assembly, the other end of the shifting fork assembly is connected with the combination sleeve, and the execution motor is used for pushing the shifting fork assembly to rotate around the hinge shaft so as to push the combination sleeve to be located at three different positions, namely a left position, a middle position and a right position; the coupling sleeve includes: when the combination sleeve is positioned at the middle position, the combination sleeve internal gear is simultaneously meshed with the left half axle gear external gear and the half axle flange external gear, and the left half axle gear is linked with the half axle flange; when the combination sleeve is positioned at the right position, the inner gear teeth of the combination sleeve are simultaneously meshed with the outer gear teeth of the left half shaft gear and the outer gear teeth of the half shaft flange, the outer gear teeth of the combination sleeve are meshed with the inner gear teeth of the gear ring, and the left half shaft gear, the half shaft flange and the gear ring are linked; when the combination sleeve is in the left position, the inner meshing teeth of the combination sleeve are only meshed with the outer meshing teeth of the left half axle gear.

Preferably, the multi-function speed reducer assembly further includes an input shaft assembly and an intermediate shaft assembly, the input shaft assembly transmitting power to the intermediate shaft assembly, the intermediate shaft assembly transmitting power to the differential assembly, wherein: the intermediate shaft assembly comprises a second intermediate transmission gear, and the gear ring is meshed with the second intermediate transmission gear; the input shaft assembly comprises an input shaft; multifunctional reducer assembly still includes electron P and keeps off functional module, electron P keeps off functional module includes that brake tooth, pawl, first push jack, second push jack and P keep off motor and controller thereof, brake tooth fixed mounting in on the input shaft, P keep off the motor with the second push jack links to each other, install the spring between first push jack and the second push jack, first push jack and pawl butt, through controller control P keeps off the motor and drives the rotation of second push jack, and the second push jack passes through the spring and transmits power to first push jack, and first push jack promotes pawl card and goes into or deviate from the pawl to realize the locking and the unblock function that P kept off.

Preferably, the input shaft assembly, the intermediate shaft assembly and the differential assembly jointly form a parallel shaft type two-stage speed reduction structure, and the speed reducer shell is further used for accommodating the input shaft assembly and the intermediate shaft assembly.

Preferably, the decelerator housing includes a front housing and a rear housing engaged with the front housing, and the hinge shaft is fixed to the front housing or the rear housing.

Preferably, the P-gear motor comprises a P-gear motor output shaft, the P-gear motor output shaft is connected with the second push sheet, and an angle sensor device is arranged on the P-gear motor output shaft.

Preferably, an angle sensor device is arranged on the shifting fork assembly.

Preferably, one end of the input shaft is a power connecting end, the power connecting end extends out of the speed reducer shell, and the power connecting end is provided with external spline teeth; the differential assembly further comprises a right half shaft gear, and the half shaft flange and the right half shaft gear are respectively provided with internal spline teeth.

Preferably, one end of the half shaft flange is mounted on the reducer case through a bearing.

Preferably, combine cover, ring gear, left side gear, the four coaxial settings of right side gear, just semi-axis flange, left side gear and ring gear arrange in proper order, combine the cover to locate outside the semi-axis flange, it is used for to combine to be equipped with sunken the groove of dialling that shift fork subassembly stretched into on the cover.

Preferably, the left half axle gear is close to the outer wall of one end of the half axle flange is provided with a sunken step clamping ring, the half axle flange is close to the inner wall of one end of the left half axle gear is provided with a sunken step clamping groove, and the step clamping ring stretches into the step clamping groove. And a wear-resistant ring is arranged between the step clamping ring and the step clamping groove.

(III) advantageous effects

The utility model discloses compare with prior art, the utility model discloses multi-functional reduction gear assembly's beneficial effect mainly includes:

the utility model discloses a multi-functional reduction gear assembly is the invention creation that carries out to the special requirement of four-wheel drive cross-country type vehicle. Can simultaneously meet the special requirements of the four-wheel drive off-road vehicle on the differential function, the locking function when getting out of trouble and the disconnection function when driving one. Locking, disconnection module adopt motor shift fork promotion formula, and small, reliability are high, and electron P keeps off the module and can let the parking more safe and relieved to the structure is small, and the reliability is high.

Drawings

The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:

fig. 1 is a perspective view of a part of the multifunctional speed reducer assembly according to the embodiment of the present invention;

fig. 2 is a schematic axial layout diagram of the multi-functional speed reducer assembly according to the embodiment of the present invention;

fig. 3 shows the embodiment of the present invention in a multifunctional speed reducer assembly: the structure schematic diagram of the differential assembly;

FIG. 4 is a schematic structural view of the multi-function speed reducer assembly according to an embodiment of the present invention in a normal differential state (i.e., a sectional view taken along line A-A in FIG. 3);

fig. 5 is a schematic structural view of the multifunctional speed reducer assembly according to the embodiment of the present invention in a differential locking state;

fig. 6 is a schematic structural diagram of the multifunctional speed reducer assembly according to the embodiment of the present invention in an off state.

Description of reference numerals:

11. the brake gear, 12, the brake pawl, 13, the first push piece, 14, the second push piece and 15, the P gear motor;

21. the left half shaft gear 22, the half shaft flange 23, the combination sleeve 24, the gear ring 25, the shifting fork assembly 26 and the execution motor;

31. the left half axle gear external gear 32, the half axle flange external gear 33, the coupling sleeve internal gear 34, the coupling sleeve external gear 35 and the gear ring internal gear;

41. front housing, 42, rear housing, 43, input shaft assembly, 44, intermediate shaft assembly, 45, differential assembly;

5. wear-resisting circle.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two elements may be mechanically or electrically connected, directly or indirectly connected through an intermediate medium, or connected through the inside of the two elements, or "in transmission connection", that is, connected in a power manner through various suitable manners such as belt transmission, gear transmission, or sprocket transmission. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The multi-function speed reducer assembly of the present invention will be further described with reference to the accompanying drawings 1-6.

The utility model discloses a multifunctional speed reducer assembly, which comprises a differential assembly 45 and a speed reducer shell used for accommodating the differential assembly 45, wherein the differential assembly 45 comprises a differential locking and disconnecting functional module; the differential locking and disconnecting function module comprises: an actuating motor 26, a shifting fork assembly 25, a combination sleeve 23, a gear ring 24, a half shaft flange 22 and a left half shaft gear 21; the middle part of the shifting fork assembly 25 is hinged with the reducer shell through a hinge shaft, the execution motor 26 is connected with one end of the shifting fork assembly 25, the other end of the shifting fork assembly 25 is connected with the combining sleeve 23, and the execution motor 26 is used for pushing the shifting fork assembly 25 to rotate around the hinge shaft so as to push the combining sleeve 23 to be positioned at three different positions, namely a left position, a middle position and a right position; the coupling sleeve 23 includes: when the combination sleeve 23 is positioned in a middle position, the combination sleeve inner gear 33 is simultaneously meshed with the left half shaft gear outer gear 31 and the half shaft flange outer gear 32, and the left half shaft gear 21 is linked with the half shaft flange 22; when the combination sleeve 23 is positioned at the right position, the combination sleeve internal gear 33 is simultaneously meshed with the left half-shaft gear external gear 31 and the half-shaft flange external gear 32, the combination sleeve external gear 34 is meshed with the gear ring internal gear 35, and the left half-shaft gear 21, the half-shaft flange 22 and the gear ring 24 are linked; when the coupling sleeve 23 is in the left position, the coupling sleeve internal gear 33 meshes only with the left side gear external gear 31.

More specifically, the multi-function speed reducer assembly further comprises an input shaft assembly 43 and an intermediate shaft assembly 44, the input shaft assembly 43 transmitting power to the intermediate shaft assembly 44, the intermediate shaft assembly 44 transmitting power to a differential assembly 45, wherein: the intermediate shaft assembly 44 includes a second intermediate drive gear with which the ring gear 24 is meshed; the input shaft assembly 43 includes an input shaft; the multifunctional speed reducer assembly further comprises an electronic P-gear function module, the electronic P-gear function module comprises a brake tooth 11, a brake claw 12, a first push sheet 13, a second push sheet 14, a P-gear motor 15 and a controller thereof, the brake tooth 11 is fixedly installed on an input shaft, the P-gear motor 15 is connected with the second push sheet 14, a spring is installed between the first push sheet 13 and the second push sheet 14, the first push sheet 13 is abutted to the brake claw 12, the P-gear motor 15 is controlled by the controller to drive the second push sheet 14 to rotate, the second push sheet 14 transmits force to the first push sheet 13 through the spring, and the first push sheet 13 pushes the brake claw 12 to be clamped into or separated from the brake tooth 11, so that the locking and unlocking functions of the P-gear are realized.

More specifically, the input shaft assembly 43, the intermediate shaft assembly 44 and the differential assembly 45 together form a parallel shaft type two-stage speed reduction structure, and the reducer casing is further used for accommodating the input shaft assembly 43 and the intermediate shaft assembly 44.

More specifically, the decelerator housing includes a front housing 41 and a rear housing 42 engaged with the front housing 41, and the hinge shaft is fixed to the front housing 41 or the rear housing 42.

More specifically, the combination sleeve 23, the gear ring 24, the left side gear 21 and the right side gear are coaxially arranged, the axle flange 22, the left side gear 21 and the gear ring 24 are sequentially arranged, the combination sleeve 23 is sleeved outside the axle flange 22, and the combination sleeve 23 is provided with a recessed shifting groove for the shifting fork assembly 25 to extend into.

Referring to fig. 3, the multifunctional speed reducer assembly of the present embodiment is a parallel shaft type two-stage speed reducing structure as a whole, and the power transmission route is: input shaft assembly 43 → intermediate shaft assembly 44 → differential assembly 45, power is transmitted through two pairs of gears.

The multifunctional speed reducer assembly of the embodiment has the functions of differential locking and disconnection and the electronic P gear function at the same time.

In the differential assembly 45, the controller controls the execution motor 26 to drive the shifting fork assembly 25 to rotate, and further drives the combination sleeve 23 to move to three different positions, so that the functions of differential, locking and disconnection are realized. The three functions of the differential lock and disconnect function module are described in detail below.

(1) When the coupling sleeve 23 is located at the middle position (the position shown in fig. 4), the coupling sleeve internal teeth 33 are simultaneously meshed with the left side gear external teeth 31 and the side flange external teeth 32, so that the power of the left side gear 21 is transmitted to the side flange 22 (namely, the left side gear 21 is linked with the side flange 22), and the ordinary differential function is realized under the action of the differential.

(2) When the coupling sleeve 23 is located at the right position (the position shown in fig. 5), the coupling sleeve inner teeth 33 are simultaneously meshed with the left side gear outer teeth 31 and the half axle flange outer teeth 32, and the coupling sleeve outer teeth 34 are meshed with the gear ring inner teeth 35, so that the left side gear 21 and the gear ring 24 are locked, power is transmitted to the half axle flange 22, the left and right half axles of the differential do not differentiate, and only can rotate at the same rotating speed, and the differential locking function is realized.

(3) When the coupling sleeve 23 is located at the left position (the position shown in fig. 6), the power transmission of the left side gear 21 and the side flange 22 is interrupted, and the differential disconnection function is achieved.

In the electron P keeps off the functional module: the P-gear motor 15 drives the mechanical actuating mechanism to rotate, and further pushes the brake pawl 12 to be clamped into and separated from the brake tooth 11 arranged on the input shaft of the speed reducer, so that the locking and unlocking functions of the P-gear are realized.

The utility model discloses a multi-functional reduction gear assembly is the utility model creation that the special requirement goes on to four-wheel drive cross-country type vehicle, can satisfy four-wheel drive cross-country type vehicle simultaneously to the differential function, when getting rid of poverty locking function, when single driving many-sided special requirement of disconnection function. Locking, disconnection module adopt the motor shift fork to promote the formula, and small, reliability are high, and electron P keeps off the module and can let the parking more safe relieved to the structure is small, and the reliability is high.

In the above embodiment, the fork assembly 25 includes a sleeve having a circular ring shape as a whole, the hinge shaft extends into the sleeve, the two ends of the sleeve are respectively provided with an upper fork rod and a lower fork rod, the upper fork rod is connected with the executing motor 26, and the lower fork rod is clamped with the combining sleeve. The actuator motor 26 is used to provide reciprocating linear power.

According to the utility model discloses a specific embodiment, P keeps off motor 15 and keeps off motor output shaft including P, and P keeps off motor output shaft and second ejector pad 14 and links to each other, and P keeps off and sets up angle sensor device on the motor output shaft. In this embodiment, the angle sensor device is used to precisely control the position of the locking pawl 12.

According to the utility model discloses a particular embodiment is provided with angle sensor device on the fork assembly 25. In the present embodiment, the angle sensor device is used to precisely control the position of the coupling sleeve 23.

According to the specific embodiment of the utility model, one end of the input shaft is a power connecting end, the power connecting end extends out of the reducer shell, and the power connecting end is provided with external spline teeth; the differential assembly 45 further comprises a right half shaft gear, and the half shaft flange 22 and the right half shaft gear are respectively provided with internal spline teeth. In the present embodiment, power is input through splines of the input shaft, and is output through the side flange 22 and the right side gear of the differential to be transmitted to the wheels.

According to the utility model discloses a concrete implementation mode, half shaft flange 22's one end is installed on the reduction gear casing through the bearing.

More specifically, the bearing is mounted on the outside of one end of the axle shaft flange 22, and the inside of one end of the axle shaft flange 22 is provided with internal spline teeth.

In this embodiment, the internal spline teeth structure is adopted to facilitate power output of the half-shaft flange 22, and the external bearing is installed to facilitate smooth and stable rotation of the half-shaft flange. The arrangement of one inside and one outside can ensure that the two functions are simultaneously satisfied and the structure is compact.

According to the utility model discloses a specific embodiment, the one end outer wall that left side half axle gear 21 is close to half axle flange 22 is equipped with sunken step snap ring, and half axle flange 22 is close to the one end inner wall of left side half axle gear 21 and is equipped with sunken step draw-in groove, and the step snap ring stretches into in the step draw-in groove. In the present embodiment, this structure can improve the coaxiality between the left side gear 21 and the side flange 22, and facilitate smooth shifting of the coupling sleeve 23.

According to the utility model discloses a specific embodiment sets up wear ring 5 between step snap ring and the step draw-in groove. In the present embodiment, the wear-resistant ring 5 is used to prevent direct friction between the left side gear 21 and the side flange 22, thereby preventing wear.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A multi-function retarder assembly, characterised by comprising a differential assembly (45) and a retarder housing for receiving the differential assembly (45), the differential assembly (45) comprising a differential lock-and-disconnect functional module; the differential locking and unlocking function module comprises: the gear shifting mechanism comprises an execution motor (26), a shifting fork assembly (25), a combination sleeve (23), a gear ring (24), a half shaft flange (22) and a left half shaft gear (21); the middle part of the shifting fork assembly (25) is hinged with the speed reducer shell through a hinge shaft, the execution motor (26) is connected with one end of the shifting fork assembly (25), the other end of the shifting fork assembly (25) is connected with the combination sleeve (23), and the execution motor (26) is used for pushing the shifting fork assembly (25) to rotate around the hinge shaft, so that the combination sleeve (23) is pushed to be located at three different positions, namely a left position, a middle position and a right position; the coupling sleeve (23) comprises: the left half shaft gear (21) comprises left half shaft gear external meshing teeth (31), the half shaft flange (22) comprises half shaft flange external meshing teeth (32), the gear ring (24) comprises gear ring internal meshing teeth (35), when the combination sleeve (23) is located at the middle position, the combination sleeve internal meshing teeth (33) are simultaneously meshed with the left half shaft gear external meshing teeth (31) and the half shaft flange external meshing teeth (32), and the left half shaft gear (21) is linked with the half shaft flange (22); when the combination sleeve (23) is in the right position, the combination sleeve inner gear teeth (33) are simultaneously meshed with the left half-axle gear outer gear teeth (31) and the half-axle flange outer gear teeth (32), the combination sleeve outer gear teeth (34) are meshed with the gear ring inner gear teeth (35), and the left half-axle gear (21), the half-axle flange (22) and the gear ring (24) are linked; when the coupling sleeve (23) is in the left position, the coupling sleeve internal gear (33) is only meshed with the left side gear external gear (31).

2. The multi-function retarder assembly of claim 1, further comprising an input shaft assembly (43) and an intermediate shaft assembly (44), the input shaft assembly (43) transmitting power to the intermediate shaft assembly (44), the intermediate shaft assembly (44) transmitting power to the differential assembly (45), wherein: the intermediate shaft assembly (44) comprises a second intermediate transmission gear, and the gear ring (24) is meshed with the second intermediate transmission gear; the input shaft assembly (43) comprises an input shaft, and the multifunctional speed reducer assembly further comprises an electronic P-gear functional module; the electronic P-gear functional module comprises a brake tooth (11), a brake claw (12), a first push sheet (13), a second push sheet (14), a P-gear motor (15) and a controller thereof, wherein the brake tooth (11) is fixedly arranged on the input shaft; p keep off motor (15) with second ejector pad (14) link to each other, install the spring between first ejector pad (13) and second ejector pad (14), first ejector pad (13) and pawl (12) butt, through controller control P keeps off motor (15) and drives second ejector pad (14) rotatory, and second ejector pad (14) pass through the spring will do all can transmit to first ejector pad (13), and first ejector pad (13) promote pawl (12) card go into or deviate from brake teeth (11) to realize the locking and the unblock function that P kept off.

3. The multi-function retarder assembly of claim 2, wherein the input shaft assembly (43), the intermediate shaft assembly (44) and the differential assembly (45) together comprise a parallel shaft two-stage retarding arrangement, the retarder housing further serving to house the input shaft assembly (43) and the intermediate shaft assembly (44).

4. The multi-functional retarder assembly of claim 3, wherein the retarder housing comprises a front housing (41) and a rear housing (42) fastened to the front housing (41), the hinge shaft being fixed to the front housing (41) or the rear housing (42).

5. The multifunctional reducer assembly according to claim 4, wherein the P-speed motor (15) comprises a P-speed motor output shaft, the P-speed motor output shaft is connected with the second push plate (14), and an angle sensor device is arranged on the P-speed motor output shaft.

6. A multi-function reducer assembly according to claim 5, in which the fork assembly (25) is provided with angle sensor means.

7. The multi-function retarder assembly of claim 6, wherein one end of the input shaft is a power input end, the power input end extending out of the retarder housing, the power input end being provided with external spline teeth; the differential assembly (45) further comprises a right half shaft gear, and the half shaft flange (22) and the right half shaft gear are respectively provided with internal spline teeth.

8. The multi-function retarder assembly of claim 7, wherein one end of the side flange (22) is bearing mounted to the retarder housing.

9. The multifunctional reducer assembly according to claim 8, wherein the combination sleeve (23), the gear ring (24), the left side gear (21) and the right side gear are coaxially arranged, the side flange (22), the left side gear (21) and the gear ring (24) are sequentially arranged, the combination sleeve (23) is sleeved outside the side flange (22), and a recessed shifting groove for the shifting fork assembly (25) to extend into is formed in the combination sleeve (23).

10. The multifunctional speed reducer assembly according to claim 9, wherein a recessed stepped clamping ring is arranged on the outer wall of one end, close to the axle shaft flange (22), of the left axle shaft gear (21), a recessed stepped clamping groove is arranged on the inner wall of one end, close to the left axle shaft gear (21), of the axle shaft flange (22), and the stepped clamping ring extends into the stepped clamping groove; and a wear-resistant ring (5) is arranged between the step clamping ring and the step clamping groove.