CN209671535U - Retarder gearshift and vehicle - Google Patents

Abstract

A kind of retarder gearshift and vehicle, the device includes wheel hub, shift fork sliding block, shift fork, train of reduction gears, parking sliding block and parking component, shift slideway and parking slideway are provided on the wheel hub, the shift fork sliding block protrudes into the shift slideway, and can it is described shift slideway control under priming, the parking sliding block protrudes into the parking slideway, and it can be moved under the control of the parking slideway, the shift fork sliding block is connected with the train of reduction gears, and the parking component is connected with the parking sliding block.The retarder gearshift can integrate halting mechanism, and structure is simple, and cost is relatively low.

Description

Shifting device for speed reducer and vehicle

technical field

The utility model relates to the field of vehicle transmission systems, in particular to a shifting device for a reducer and a vehicle.

Background technique

With the rise of new energy vehicles, single-speed motor reducers are gradually unable to meet the demanding requirements of vehicle battery life and power performance, and multi-speed reducers have emerged as the times require. As far as the shift mechanism and parking mechanism are concerned, the shift mechanism is generally driven by the shift motor, while the parking mechanism is driven by the parking motor. The two mechanisms are completely independent. This traditional layout form , complex structure, difficult layout, and high cost.

Utility model content

The purpose of the utility model is to provide a shifting device for a reducer and a vehicle. The shifting device for a reducer can be integrated with a parking mechanism, and has a simple structure and low cost.

The utility model provides a gear shifting device for a reducer, which comprises a wheel hub, a shift fork slider, a shift fork, a reduction gear set, a parking slider and a parking assembly. slideway, the fork slide block extends into the shift slideway, and can be driven under the control of the shift slideway, and the parking slide block extends into the parking slideway, and can be The parking slideway moves under the control, the fork slide block is connected with the reduction gear set, and the parking assembly is connected with the parking slide block.

Further, the shifting device for the reducer also includes a driving motor, and the driving motor is connected to the hub through a deceleration and torque increasing device.

Further, the shifting device for the reducer also includes a shift fork shaft and a parking shaft, the shift fork slider and the parking slider are sleeved on the shift fork shaft and the parking shaft respectively, the The parking shaft is fixed on the body fixture, and the shift fork slider and the parking slider are driven by the wheel hub to slide along the shift fork shaft and the parking shaft respectively.

Further, the shifting device for the reducer also includes a bushing, a shift fork shaft and a parking shaft, the bushing is arranged on the body fixture, and the shift fork slider and the parking slider are respectively fixed on the On the shift fork shaft and the parking shaft, the shift fork shaft and the parking shaft extend into the corresponding bushing, and the shift fork shaft and the parking shaft can respectively be driven by the hub. Sliding in the corresponding said bush along its own axial direction.

Further, the shift fork shaft and the parking shaft are parallel to each other, and the parking slider is sleeved on the shift fork shaft and the parking shaft at the same time.

Further, the shifting device for a reducer further includes a support shaft, and the shift fork slider and the parking slider are both arranged on the same support shaft.

Further, the reduction gear set includes a first speed gear, a second speed gear and a synchronizer, the synchronizer is arranged between the first speed gear and the second speed gear, and the synchronizer slides with the shift fork The block is connected and can move under the drive of the fork slider.

Further, the shift slideway and the parking slideway on the hub can be divided into 7 continuous working sections. From the first section to the fifth section, the The state where the second gear is combined, the state that is gradually disengaged from the second gear, the neutral state, the state that is gradually combined with the first gear, and the state that is combined with the first gear; from the first interval to the In the fifth interval, the parking components are all in the non-parking state; from the sixth interval to the seventh interval, the synchronizer is in the state of being combined with the first gear, and the parking assemblies are in sequentially from The non-parking state gradually transitions to the parking state and the parking state.

Further, the shift slideway and the parking slideway on the hub can be divided into 7 continuous working sections. From the first section to the fifth section, the The state where the first gear is combined, the state that is gradually disengaged from the first gear, the neutral state, the state that is gradually combined with the second gear, and the state that is combined with the second gear; from the first interval to the In the fifth interval, the parking components are all in the non-parking state; from the sixth interval to the seventh interval, the synchronizer is in the state of combining with the second gear, and the parking assemblies are sequentially in the state from The non-parking state gradually transitions to the parking state and the parking state.

The utility model also provides a vehicle, which includes the above-mentioned shifting device for the reducer.

In summary, the utility model can control the rotation of a wheel hub by setting a shift slideway and a parking slideway on a wheel hub, and can simultaneously control the operation of the deceleration mechanism and the parking mechanism, which enables the parking mechanism to be integrated In the shifting device for the reducer, the structure of the shifting device for the reducer is simpler and the cost is lower.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

Fig. 1 is a front structural schematic diagram of a shifting device for a reducer provided by an embodiment of the present invention.

Fig. 2 is a schematic side view of the shifting device for the reducer in Fig. 1 .

FIG. 3 is a schematic diagram of a cross-sectional structure along the direction III-III in FIG. 2 .

Fig. 4 is a schematic diagram of comparison between the rotation angle of the hub and each working interval of the shifting device for the reducer in Fig. 1 .

Detailed ways

In order to further explain the technical means and effects of the utility model to achieve the intended purpose of the utility model, the utility model will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

The purpose of the utility model is to provide a shifting device for a reducer and a vehicle. The shifting device for a reducer can be integrated with a parking mechanism, and has a simple structure and low cost.

Fig. 1 is a schematic front structural view of the shifting device for a reducer provided by an embodiment of the present invention, and Fig. 2 is a schematic side view of the shifting device for a reducer in Fig. 1 . Fig. 3 is a schematic cross-sectional structure diagram along the III-III direction in Fig. 2, as shown in Fig. 1 to Fig. 3, the shifting device for a reducer provided by the utility model includes a hub 10, a shift fork slider 21, a reduction gear set 22, The parking slider 31 and the parking assembly 32 are provided with a shift slideway 11 and a parking slideway 12 on the hub 10, and the shift fork slider 21 stretches into the shift slideway 11, and can be placed on the shift slideway. Move under the control of 11, the parking slider 31 stretches into the parking slideway 12, and can move under the control of the parking slideway 12, the shift fork slider 21 is connected with the reduction gear set 22, and the parking assembly 32 is connected with the parking slideway 12. Car slide block 31 links to each other.

In this embodiment, by setting the shift slide 11 and the parking slide 12 on a hub 10, and controlling the rotation of a hub 10, the operation of the reduction gear set 22 and the parking assembly 32 can be controlled simultaneously, which makes The parking mechanism can be integrated on the shifting device for the reducer, so that the structure of the shifting device for the reducer is simpler and the cost is lower.

Further, the shifting device for the reducer also includes a drive motor 40 (see FIG. 3 ), which is connected to the hub 10 to control the rotation of the hub 10 . In order to ensure that the drive motor 40 can provide greater torque, in this embodiment, a deceleration and torque increasing device (not shown) may also be provided between the drive motor 40 and the hub 10 .

The shifting device for the speed reducer also includes a shift fork shaft 23 and a parking shaft 33. The above-mentioned shift fork slider 21 and the parking slider 31 are respectively sleeved on the shift fork shaft 23 and the parking shaft 33. In this embodiment, The shift fork shaft 23 and the parking shaft 33 can be fixed on the fixed parts of the vehicle body, such as the reducer housing, and the shift fork slider 21 and the parking slider 31 slide along the shift fork shaft 23 and the parking shaft 33 respectively under the drive of the hub 10 .

In this embodiment, as shown in FIG. 3 , the shift fork shaft 23 and the parking shaft 33 are parallel to each other, and the parking slider 31 can be sleeved on the shift fork shaft 23 and the parking shaft 33 at the same time, and can be driven by the wheel hub 10 The bottom slides along the shift fork shaft 23 and the parking shaft 33 , which can prevent the parking slider 31 from rotating around the parking shaft 33 .

In other embodiments, the fork slider 21 and the parking slider 31 can be sleeved on the same support shaft.

In the above-mentioned embodiment, the shift fork shaft 23 and the parking shaft 33 are fixed on the fixing parts of the vehicle, that is, the shift fork shaft 23 and the parking shaft 33 are fixed, and the shift fork slider 21 and the parking shaft The slider 31 slides on the shift fork shaft 23 and the parking shaft 33 respectively. In another embodiment, the shifting device for the speed reducer also includes a bushing (not shown), the bushing is fixed on the fixed frame of the vehicle, such as on the speed reducer housing, the shift fork slider 21 and the parking slider 31 are respectively fixed on the shift fork shaft 23 and the parking shaft 33, the shift fork shaft 23 and the parking shaft 33 extend into the corresponding bushings respectively, and the shifting fork shaft 23 and the parking shaft 33 can slide in the bushing along their own radial direction , that is, the shift fork slider 21 and the shift fork shaft 23 are fixed, the parking slider 31 and the parking shaft 33 are fixed, and the shift fork shaft 23 and the parking shaft 33 can slide in the bushing.

In this embodiment, as shown in FIGS. 1 to 3 , the reduction gear set 22 includes a first gear 221 , a second gear 222 and a synchronizer 223 arranged between the first gear 221 and the second gear 222 . The shift fork slider 21 is connected with the synchronizer 223 and can drive the synchronizer 223 to move, so that the synchronizer 223 can be selectively connected with the first gear 221 or the second gear 222 .

The parking assembly 32 comprises a parking push rod 321, a parking arm 322 and a return spring 323. The parking push rod 321 is connected with the parking slide block 31, and can move under the drive of the parking slide block 31. The head of the rod 321 is provided with a conical block 324, and the parking arm 322 is provided with an accommodating hole 325. The conical block 324 extends into the accommodating hole 325. As the parking push rod 321 moves downward in FIG. Shape block 324 can compress parking arm 322, and parking arm 322 is combined with parking gear, and return spring 323 is arranged on the parking shaft 33, and links to each other with parking arm 322, so that the taper block 324 and parking arm After 322 is out of contact, the auxiliary parking arm 322 is returned, and the parking arm 322 is out of contact with the parking gear.

Fig. 4 is a schematic diagram of comparison between the hub rotation angle and each working area of the shifting device for the reducer in Fig. 1. As shown in Fig. 4, the shift slideway 11 and the parking slideway 12 on the wheel hub 10 can be divided into seven Continuous working intervals, that is, seven working intervals from the first interval to the seventh interval divided by dotted lines in Fig. 4 .

When the hub 10 rotates to the first section, the synchronizer 223 is combined with the second gear 222, and the parking assembly 32 is in a non-parking state; The disengaged state (if the wheel hub 10 rotates in the opposite direction, the synchronizer 223 can also be understood as the state of gradually combining with the second gear 222), the parking assembly 32 is in the non-parking state; when the wheel hub 10 rotates to the third interval , the synchronizer 223 is in the neutral state, and the parking assembly 32 is in the non-parking state; when the wheel hub 10 rotates to the fourth interval, the synchronizer 223 is in the state of gradually combining with the first gear 221 (if the wheel hub 10 rotates in the opposite direction , at this time the synchronizer 223 can also be understood as a state of gradually disengaging from the first gear 221), the parking assembly 32 is in a non-parking state; when the hub 10 rotates to the fifth interval, the synchronizer 223 is combined with the first gear 221 , the parking assembly 32 is in the non-parking state; when the hub 10 rotates to the sixth section, the synchronizer 223 remains combined with the first gear 221, and the parking assembly 32 gradually enters the parking state from the non-parking state; when the hub When 10 rotates to the seventh interval, the synchronizer 223 still remains combined with the first gear 221, and the parking assembly 32 is in the parking state.

That is to say, in the present embodiment, from the first section to the fifth section, the synchronizer 223 undergoes a state of being combined with the second gear 222, gradually disengaging from the second gear 222, a neutral state, and gradually combining with the first gear 221 in sequence. And the combined state with the first gear 221 . While in the sixth to seventh intervals, the clutches are all kept in the state of being engaged with the first gear 221 , and from the fifth to the seventh intervals, the parking assembly 32 gradually transitions from the non-parking state to the parking state. That is to say, when the parking assembly 32 is in the interval of gradually entering the parking state from the non-parking state, and when it is in the interval of the parking state, the synchronizer 223 is combined with the first gear 221; When the contact state changes, the parking components 32 are all in the non-parking state. The above-mentioned setting can make the control of the reduction gear set 22 and the parking assembly 32 not interfere with each other; at the same time, because the parking assembly 32 switches between the parking state and the non-parking state, the synchronizer 223 is all connected with the first gear 221. In combination, the vehicle is at a relatively low speed, which facilitates the control of the parking assembly 32 and facilitates the quick start of the vehicle after the parking assembly 32 is switched from the parking state to the non-parking state.

It can be understood that, in another embodiment, from the first zone to the fifth zone, the combination state of the synchronizer 223 is opposite to the above-mentioned manner, that is, the synchronizer 223 undergoes the combination with the first gear 221 from the state of being combined with the first gear. The gear 221 is gradually disengaged, in the neutral state, and gradually combined with the second gear 222 to the combined state with the second gear 222 , while in the sixth interval and the seventh interval, the synchronizer 223 remains in the engaged state with the second gear 222 . From the first interval to the fifth interval, the parking assembly 32 still maintains the non-parking state, and in the sixth interval, the parking assembly 32 gradually arrives at the parking state from the non-parking shape; in the seventh interval, the parking assembly 32 in parked state.

That is to say, in the above embodiment, when the parking assembly 32 moves from the non-parking state to the parking state, the synchronizer 223 remains coupled with the second gear 222 .

In summary, the utility model controls the rotation of a wheel hub 10 by setting a shift slideway 11 and a parking slideway 12 on a wheel hub 10, so that the operation of the deceleration mechanism and the parking mechanism can be controlled simultaneously, which makes the parking The vehicle mechanism can be integrated on the shifting device for the reducer, so that the structure of the shifting device for the reducer is simpler and the cost is lower.

The utility model also provides a vehicle, including the above-mentioned shifting device for a reducer. For other technical features of the vehicle, please refer to the prior art, and details will not be repeated here.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession, without departing from the scope of the technical solution of the present utility model, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but all without departing from the technical solution of the utility model Contents, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (10)

1. A gear shifting device for a speed reducer, characterized in that: it comprises a wheel hub, a shift fork slider, a shift fork, a reduction gear set, a parking slider and a parking assembly, and the wheel hub is provided with a shift slide and Parking slideway, the fork slide block extends into the shift slideway and can move under the control of the shift slideway, the parking slide block extends into the parking slideway, and It can move under the control of the parking slideway, the fork slide block is connected with the reduction gear set, and the parking assembly is connected with the parking slide block. 2 . The shifting device for a reducer according to claim 1 , characterized in that: the shifting device for a reducer further comprises a drive motor, and the drive motor is connected to the hub through a deceleration and torque increasing device. 3 . 3. The shifting device for a reducer according to claim 1, characterized in that: the shifting device for a reducer also includes a shift fork shaft and a parking shaft, and the shift fork slider and the parking slider are respectively covered Set on the shift fork shaft and the parking shaft, the parking shaft is fixed on the body fixture, the shift fork slider and the parking slider can respectively move along the The shift fork shaft and the parking shaft slide. 4. The shifting device for a reducer according to claim 1, characterized in that: the shifting device for a reducer further comprises a bushing, a shift fork shaft and a parking shaft, the bushing is arranged on a body fixture, and the The shift fork slider and the parking slider are respectively fixed on the shift fork shaft and the parking shaft, and the shift fork shaft and the parking shaft extend into the corresponding bushings, and the dial Driven by the wheel hub, the fork shaft and the parking shaft can slide in the corresponding bushings along their own axial directions. 5. The shifting device for a reducer according to claim 3 or 4, characterized in that: the shift fork shaft and the parking shaft are parallel to each other, and the parking slider is arranged on the shift fork shaft and the parking shaft at the same time. on the parking axle. 6. The shifting device for a reducer according to claim 1, characterized in that: the shifting device for a reducer further includes a support shaft, and the fork slider and the parking slider are both arranged on the same on the support shaft. 7. The shifting device for a reducer according to claim 1, wherein the reduction gear set includes a first gear, a second gear and a synchronizer, and the synchronizer is arranged between the first gear and the first gear. Between the second gear, the synchronizer is connected with the shift fork slider and can move under the drive of the shift fork slider. 8. The shifting device for a reducer according to claim 7, characterized in that: the shift slide and the parking slide on the hub can be divided into 7 continuous working sections, starting from the first From the first section to the fifth section, the synchronizer sequentially experiences the state of being combined with the second gear, the state of gradually disengaging from the second gear, the neutral state, the state of gradually combining with the first gear, and the state of being gradually combined with the first gear. The first gear is combined; from the first interval to the fifth interval, the parking assembly is in the non-parking state; from the sixth interval to the seventh interval, the synchronizer is in the same state as the In the state where the first gear is combined, the parking assembly is gradually transitioning from the non-parking state to the parking state and the parking state in sequence. 9. The shifting device for a reducer according to claim 7, characterized in that: the shift slide and the parking slide on the hub can be divided into 7 continuous working sections, starting from the first From the first section to the fifth section, the synchronizer sequentially experiences the state of being combined with the first gear, the state of gradually disengaging from the first gear, the neutral state, the state of gradually combining with the second gear, and the state of being gradually combined with the first gear. The state where the second gear is combined; from the first interval to the fifth interval, the parking assembly is in a non-parking state; from the sixth interval to the seventh interval, the synchronizer is in the same state as the In the state where the second gear is combined, the parking assembly is gradually transitioning from the non-parking state to the parking state and the parking state in sequence. 10. A vehicle, characterized by comprising the shifting device for a reducer according to any one of claims 1 to 9.