CN204284421U - For vehicle parking system and there is its vehicle - Google Patents

Abstract

The utility model discloses a parking system for vehicles and a vehicle with the parking system. The parking system comprises: a casing, an input shaft and an output shaft are arranged in the casing, and a helical gear pair is used to connect the input shaft and the output shaft. Linkage; drive motor, the drive motor is set to be linked with the input shaft; planetary gear mechanism, the planetary gear mechanism includes sun gear, planetary gear, planet carrier and ring gear, the sun gear is fixed on the output shaft, and the ring gear is fixed relative to the output shaft ; the thrust screw and the thrust nut, the thrust screw is connected with the planet carrier; the input shaft limit structure and the output shaft limit structure, the input shaft limit structure is arranged at one end of the input shaft to axially limit the input shaft, and the output shaft limit The bit structure is arranged at one end of the output shaft to limit the output shaft axially. According to the parking system for vehicles of the utility model, the phenomenon of axial movement can be prevented at least to a certain extent, and the torque consumption during transmission can be reduced, thereby improving the transmission efficiency.

Description

Parking system for vehicle and vehicle having same

technical field

The utility model relates to the field of vehicles, in particular to a parking system for vehicles and a vehicle with the same.

Background technique

In the related art, the input shaft and the output shaft installed with the helical gear in the parking system generally have axial movement. Axial movement will increase the wear of the transmission system and reduce the transmission efficiency.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, the utility model proposes a parking system for vehicles, which can prevent the occurrence of axial movement of the input shaft and output shaft at least to a certain extent, and can also reduce the impact of frictional resistance on the transmission when limiting the position. When the torque consumption, thereby improving the transmission efficiency.

According to the parking system for vehicles of the present invention, the parking system includes: a housing, an input shaft and an output shaft are arranged in the housing, and the input shaft and the output shaft are linked by a helical gear pair a drive motor, the drive motor is set to be linked with the input shaft; a planetary gear mechanism, the planetary gear mechanism includes a sun gear, a planetary gear, a planet carrier and an inner ring gear, and the sun gear is fixed on the output shaft Above, the inner ring gear is fixed relative to the output shaft; a thrust screw and a thrust nut, the thrust screw is connected with the planet carrier; and an input shaft limiting structure and an output shaft limiting structure, the input shaft limiting The structure is arranged at one end of the input shaft for axially limiting the input shaft, and the output shaft limiting structure is arranged at one end of the output shaft for axially limiting the output shaft.

According to the parking system for vehicles of the present invention, an input shaft limiting structure is provided at one end of the input shaft, and an output shaft limiting structure is provided at one end of the output shaft. The setting of the limit structure of the input shaft and the limit structure of the output shaft can prevent the occurrence of the axial movement of the input shaft and the output shaft at least to a certain extent, can effectively avoid the failure of the gear offside, and can also reduce the frictional resistance during the limit. The torque consumption during transmission improves the transmission efficiency.

A vehicle according to another aspect of the present invention includes the above-mentioned parking system for a vehicle according to the present invention.

According to another aspect of the vehicle of the present utility model, the parking system in the vehicle can at least to a certain extent prevent the occurrence of axial movement of the input shaft and the output shaft, so that the transmission of the parking system is stable and compact, thereby ensuring The working status of the parking function and unparking function of the vehicle can also improve the safety performance of the vehicle.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is a working principle diagram of a parking system for a vehicle according to an embodiment of the present invention;

2 is a schematic structural view of a parking system for a vehicle according to an embodiment of the present invention;

Fig. 3 is a partial enlarged view of area A in Fig. 2;

Fig. 4 is a partial enlarged view of area B in Fig. 2;

Fig. 5 is the schematic diagram of end cap;

Fig. 6 is a schematic diagram of the input shaft limit steel ball and the output shaft limit steel ball.

Reference signs:

parking system 100;

shell 1;

Input shaft 2; second helical gear 21; third helical gear 22; input shaft blind hole 23;

Output shaft 3; fourth helical gear 31; output shaft blind hole 32;

Drive motor 4; The first helical gear 41;

Planetary gear mechanism 5; sun gear 53; planetary gear 52; inner ring gear 51; planet carrier 54;

Thrust screw 6; Thrust nut 61;

Input shaft limit structure 7; input shaft limit steel ball 71; end cover 72;

Output shaft limit steel ball 8.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", Orientation indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and operation, and therefore cannot be construed as a limitation of the utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a flexible connection. Detachable connection, or integral connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "below" a second feature may include direct contact between the first and second features, and may also include the first and second features being in direct contact with each other. The features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "below" and "under" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is less horizontal than the second feature.

The following describes a parking system 100 for a vehicle according to an embodiment of the present invention with reference to FIGS. 1-6 . The parking system 100 for a vehicle according to the embodiment of the present utility model may include a housing 1, a driving motor 4, a planetary gear mechanism 5, a thrust screw 6, a thrust nut 61, an input shaft limiting structure 7 and an output shaft limiting structure (For example, output shaft limit steel ball 8).

The housing 1 of the parking system 100 is provided with an input shaft 2 and an output shaft 3 , and the input shaft 2 and the output shaft 3 are linked by a helical gear pair. The helical gear pair refers to two helical gears meshing with each other. The meshing performance of the helical gear pair is good, the transmission is stable and the noise is low, and the degree of overlap is relatively large, which improves the load-bearing performance of the gear accordingly. The drive motor 4 is set to be linked with the input shaft 2 , for example, the drive motor 4 can be used as a power source and can output the generated power to the input shaft 2 , so as to drive the input shaft 2 to rotate around the axis of the input shaft 2 .

The planetary gear mechanism 5 includes a sun gear 53 , planetary gears 52 , a carrier 54 and a ring gear 51 . As shown in Figure 1, the sun gear 53 is fixed on the output shaft 3, and the ring gear 51 is fixed relative to the output shaft 3. The ring gear 51 can be fixed on the outer casing of the planetary gear mechanism 5, or it can also be fixed on the parking system 100. On the casing 1, the planetary gear 52 is arranged between the sun gear 53 and the ring gear 51, and the planetary carrier 54 is on the same axis as the output shaft 3, and the planetary gear 52 and the planetary carrier 54 revolve around the fixed axis with a rotary pair To do revolution, of course, the planetary gear 52 can also rotate around its own axis.

Since the inner ring gear 51 is fixed relative to the output shaft 3, when the power is output to the planetary gear mechanism 5 through the output shaft 3 and the sun gear 53, the planet carrier 54 will output power as the only power output end, and the planet carrier 54 and the thrust screw 6 Connection, thrust screw 6 and thrust nut 61 fit. In the daily driving process, when it is necessary to realize the parking (or emergency braking) function, the control switch is pulled up, and the driving motor 4 rotates forward (it is stipulated that the steering of the driving motor 4 is in the positive direction during the parking action), and the planetary carrier 54 drives the thrust The screw rod 6 unscrews the thrust nut 61 so as to realize the effective parking function. When it is necessary to realize the unparking function, press the control switch, the drive motor 4 reverses, and through the input shaft 2 and the output shaft 3, the planet carrier 54 drives the thrust screw 6 to be screwed into the thrust nut 61 to realize the effective unparking function. It should be understood that the realization of the parking function/unparking function through the cooperative action of the thrust screw 6 and the thrust nut 61 is a prior art, so no detailed description is given here.

As shown in FIG. 2 and FIG. 3 , the input shaft limiting structure 7 is arranged at one end of the input shaft 2 (for example, the upper end in FIG. 3 ), and the input shaft limiting structure 7 can axially limit the input shaft 2 . That is to say, the input shaft limiting structure 7 can at least to a certain extent prevent the input shaft 2 with the helical gear from moving axially, or the input shaft limiting structure 7 can prevent the input shaft under the working state at least to a certain extent. Unavoidable small movement of shaft 2 along the axial direction.

The output shaft limiting structure is arranged at one end of the output shaft 3 , and the output shaft limiting structure can limit the output shaft 3 axially. That is to say, the output shaft limiting structure can at least to a certain extent prevent the output shaft 3 with the helical gear from moving axially, or the output shaft limiting structure can at least to a certain extent prevent the output shaft 3 in the working state from moving. Unavoidable small movements along the axis.

According to the parking system 100 for vehicles in the embodiment of the present invention, an input shaft limiting structure 7 is provided at one end of the input shaft 2 , and an output shaft limiting structure is provided at one end of the output shaft 3 . The setting of the input shaft limit structure 7 and the output shaft limit structure can prevent the occurrence of the axial movement of the input shaft 2 and the output shaft 3 at least to a certain extent, can effectively avoid the gear offside failure, and can also reduce the limit The frictional resistance consumes the torque during the transmission, thereby improving the transmission efficiency.

In some examples of the parking system 100 for vehicles of the present utility model, the motor shaft of the driving motor 4 is provided with a first helical gear 41, and the driving motor 4 and the first helical gear 41 are used as power in the parking system 100 input. The input shaft 2 is provided with a second helical gear 21 , and the first helical gear 41 meshes with the second helical gear 21 . That is to say, the driving motor 4 and the input shaft 2 perform power transmission through the first helical gear 41 and the second helical gear 21 meshing with each other.

As an optional implementation, the number of teeth of the first helical gear 41 is less than the number of teeth of the second helical gear 21 . When the first helical gear 41 meshes with the second helical gear 21, since the number of teeth of the first helical gear 41 is less than the number of teeth of the second helical gear 21, a small gear drives the large gear to rotate, thereby reducing the speed and increasing the driving force. Force, that is to say, deceleration and torque increase can be realized.

In some examples of the parking system 100 for vehicles of the present utility model, the input shaft 2 is further provided with a third helical gear 22, the output shaft 3 is provided with a fourth helical gear 31, the third helical gear 22 is connected with the first The four helical gears 31 mesh. That is to say, the drive motor 4 drives the input shaft 2 to rotate, the third helical gear 22 on the input shaft 2 rotates with the input shaft 2, the third helical gear 22 meshes with the fourth helical gear 31 on the output shaft 3, and then the input The shaft 2 can drive the output shaft 3 to rotate.

As an optional implementation, the number of teeth of the third helical gear 22 is less than the number of teeth of the fourth helical gear 31 . When the third helical gear 22 meshes with the fourth helical gear 31, since the number of teeth of the third helical gear 22 is less than the number of teeth of the fourth helical gear 31, a small gear is formed to drive the large gear to rotate, thereby reducing the rotational speed and increasing the driving force , that is to say, deceleration and torque increase can be realized.

In some examples of the parking system 100 for vehicles of the present invention, as shown in FIG. 3 , the input shaft limiting structure 7 includes an input shaft limiting steel ball 71 and an end cover 72 . The input shaft limiting steel ball 71 is fixed at one end of the input shaft 2 , as shown in FIG. 2 and FIG. 3 , the input shaft limiting steel ball 71 is fixed at one end of the second helical gear 21 adjacent to the input shaft 2 . Optionally, as shown in FIG. 6 , the input shaft limiting steel ball 71 may be a high-strength steel ball, but it is not limited thereto.

The end cover 72 is fixed on the housing 1 , and the input shaft limiting steel ball 71 abuts against the end cover 72 . During the working process of the parking system 100 , the end cover 72 has a position limiting function, and can limit and support the limit steel ball 71 of the input shaft. Optionally, the end cover 72 can be a rigid plastic part, so that the strength of the end cover 72 is better, which can improve the safety factor of the gears in the parking system 100, thereby prolonging the service life of the parking system 100, but is not limited to this.

Further, an input shaft blind hole 23 is provided on the end face of one end of the input shaft 2 . The input shaft limit steel ball 71 is interference fit in the input shaft blind hole 23 , and a part of the input shaft limit steel ball 71 protrudes from the input shaft blind hole 23 and abuts against the end cover 72 . The advantage of the interference fit is that it is not easy to roll the key, and the axial limit is better, which is conducive to the axial positioning of the input shaft limit steel ball 71 to the input shaft 2, and the failure rate is less, which is conducive to ensuring the parking system 100 normal working condition.

In this way, the input shaft limit structure 7 is set between the input shaft 2 on which the second helical gear 21 and the third helical gear 22 are installed and the housing 1, and the point contact is adopted between the input shaft limit steel ball 71 and the end cover 72. The unique contact method can reduce the consumption of frictional resistance during the limit to the torque consumption during the transmission, thereby improving the transmission efficiency. Moreover, the point-to-point contact of the shaft ends of the input shaft 2 makes the parking system 100 less prone to uneven force when it is in operation, which is conducive to the smooth transmission of the helical gear pair and the compactness of the transmission.

Optionally, the output shaft limiting structure may be an output shaft limiting steel ball 8. Optionally, as shown in FIG. 6, the output shaft limiting steel ball 8 is a high-strength steel ball, but not limited thereto. The output shaft limit steel ball 8 is fixed on one end of the output shaft 3 and leans against the planet carrier 54 . It can be understood that the output shaft limiting steel ball 8 is fixed between one end of the output shaft 3 and the planet carrier 54 . The setting of the output shaft limit steel ball 8 can limit the fourth helical gear 31 on the output shaft 3, which can effectively avoid the gear offside failure, and can reduce the torque consumption of the friction resistance during the limit, thereby improving the transmission efficiency. The point contact between the output shaft 3 and the planetary carrier 54 makes the parking system 100 less prone to uneven force when it is working, which is conducive to the smooth transmission of the helical gear pair and the compactness of the transmission.

Further, as shown in Figure 4, the end face of one end of the output shaft 3 is provided with an output shaft blind hole 32, and the output shaft limit steel ball 8 is interference fit in the output shaft blind hole 32, which is beneficial to the output shaft limit steel The axial positioning of the ball 8 to the output shaft 3 is beneficial to ensure the normal working state of the parking system 100 . Moreover, a part of the output shaft limiting steel ball 8 protrudes outward from the output shaft blind hole 32 and abuts against the planet carrier 54 .

In some examples of the parking system 100 for vehicles of the present invention, the input shaft 2 and the output shaft 3 are adjacently arranged, it can be understood that the input shaft 2 and the output shaft 3 need the third helical gear 22 and the fourth The meshing of the helical gear 31 realizes the transmission, so the input shaft 2 and the output shaft 3 are adjacently arranged. The input shaft limiting structure 7 and the output shaft limiting structure are located on different sides of the input shaft 2 and the output shaft 3 . When the parking system 100 works normally, the meshing of the two helical gears will generate an axial force, thereby causing axial movement. The input shaft limit steel ball 71 and the output shaft limit steel ball 8 on different sides can perform overall axial limit on the input shaft 2 and the output shaft 3 to prevent axial movement of the parking system 100 .

The vehicle according to another embodiment of the present utility model includes the parking system 100 for the vehicle according to the above-mentioned embodiments of the present utility model. The parking system 100 in the vehicle can prevent the axial movement of the input shaft 2 and the output shaft 3 to a certain extent, so that the transmission of the parking system 100 is stable and compact, thereby ensuring the parking and unparking functions of the vehicle. It can also improve the safety performance of the vehicle.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. for a parking system for vehicle, it is characterized in that, comprising:

Housing, is provided with input shaft and output shaft in described housing, linked between described input shaft and described output shaft by helical gear pair;

Drive motor, described drive motor is arranged to link with described input shaft;

Planetary gears, described planetary gears comprises sun gear, planet wheel, planet carrier and ring gear, and described sun gear is fixed on described output shaft, and the relatively described output shaft of described ring gear is fixed;

Thrust screw rod and thrust nut, described thrust screw rod is connected with described planet carrier; And

Input shaft limit structure and output shaft limit structure, one end that described input shaft limit structure is arranged on described input shaft is sentenced and is carried out axial limiting to described input shaft, and one end that described output shaft limit structure is arranged on described output shaft is sentenced and carried out axial limiting to described output shaft.

2. the parking system for vehicle according to claim 1, is characterized in that, the motor shaft of described drive motor is provided with the first helical gear, described input shaft is provided with the second helical gear, and described first helical gear engages with described second helical gear.

3. the parking system for vehicle according to claim 2, is characterized in that, described input shaft is also provided with the 3rd helical gear, described output shaft is provided with the 4th helical gear, and described 3rd helical gear engages with described 4th helical gear.

4. the parking system for vehicle according to claim 3, is characterized in that, the described first helical gear number of teeth is less than the described second helical gear number of teeth, and the described 3rd helical gear number of teeth is less than the described 4th helical gear number of teeth.

5. the parking system for vehicle according to claim 1, is characterized in that, described input shaft limit structure comprises:

The spacing steel ball of input shaft, the spacing steel ball of described input shaft is fixed on described one end place of described input shaft; And

End cap, described end cap is fixing on the housing, and the spacing steel ball of described input shaft is resisted against on described end cap.

6. the parking system for vehicle according to claim 5, it is characterized in that, the end face of described one end of described input shaft is provided with input shaft blind hole, and the spacing steel ball of described input shaft is interference fitted in described input shaft blind hole and a part for the spacing steel ball of described input shaft is protruding and be resisted against described end cap in described input shaft blind hole.

7. the parking system for vehicle according to claim 1, is characterized in that, described output shaft limit structure comprises:

The spacing steel ball of output shaft, the spacing steel ball of described output shaft is fixed on described one end of described output shaft and is resisted against on described planet carrier.

8. the parking system for vehicle according to claim 7, it is characterized in that, the end face of described one end of described output shaft is provided with output shaft blind hole, and the spacing steel ball of described output shaft is interference fitted in described output shaft blind hole and a part for the spacing steel ball of described output shaft is protruding and be resisted against described planet carrier in described output shaft blind hole.

9. the parking system for vehicle according to claim 1, it is characterized in that, described input shaft and the contiguous setting of described output shaft, and described input shaft limit structure and described output shaft limit structure are in the not homonymy of described input shaft and described output shaft.

10. a vehicle, is characterized in that, comprises the parking system for vehicle according to any one of claim 1-9.