CN209634554U - Worm gear, electric power steering and vehicle - Google Patents

Abstract

The utility model relates to technical field of vehicle, a kind of worm gear, electric power steering and vehicle are disclosed, the worm gear includes the multiple gear teeth being circumferentially arranged on wheel body and the wheel body, wherein being provided with the oil storage tank for oil storage on the side of the gear teeth.Technical solution provided by the utility model can cause to lead to the problem of abnormal sound due to dry grinding to avoid worm gear and when worm-drive.

Description

Worm gear, electric power steering and vehicle

Technical field

The utility model relates to technical field of vehicle, in particular to a kind of worm gear, electric power steering and vehicle.

Background technique

Currently, turbine and worm decelerator is provided in electric power steering system of automobile, nothing in the turbine and worm decelerator Grease memory structure is only lubricated by the grease added in assembling process.

But with the increase for using the time, the grease of worm and gear cooperation position can be reduced or is extruded to circumferentially Side, is allowed to not formed lubricant layer because of lubrication failure, causes driver when beating direction, and the opposite sliding of worm and gear can generate Abnormal sound influences the perception of driver, reduces vehicle quality.

Utility model content

In view of this, the utility model is directed to a kind of worm gear, electric power steering and vehicle, to solve the prior art The opposite sliding of worm and gear can lead to the problem of abnormal sound in the electric power steering of middle vehicle.

In order to achieve the above objectives, the technical solution of the utility model is achieved in that

The utility model provides a kind of worm gear, and the worm gear includes the multiple wheels being circumferentially arranged on wheel body and the wheel body Tooth, wherein being provided with the oil storage tank for oil storage on the side of the gear teeth.

Further, the oil storage tank is respectively arranged on the opposite two sides side of the gear teeth.

Further, multiple oil storage tanks are respectively arranged on each side of the gear teeth.

Further, multiple oil storage tanks on each side are in piecewise dam axis.

Further, the oil storage tank is circular trough.

Further, the side inclination for being axially facing the wheel body of the oil storage tank.

Worm gear provided by the utility model, when being assemblied in turbine and worm decelerator, the grease that is applied on worm gear It in addition to being attached to worm wheel surface, can also enter in oil storage tank, in later period use process, worm gear is engaged with worm screw can pass through storage Grease continuous production oil film in oil groove avoids really lacking because of grease so that obtaining good lubrication between worm gear and worm screw It loses and dry grinding between worm and gear is caused to generate abnormal sound.In the turbine and worm decelerator with the worm gear for the electronic of vehicle When in steering system, it can be conducive to promote automotive quality to avoid abnormal sound is generated during Vehicular turn.

Another aspect according to the present utility model, also provides a kind of electric power steering, and the electric power steering includes The input shaft and the driving input shaft that first end with steering column for connecting, second end with steering drive axle for connecting The worm gear mechanism of rotation；

The worm gear mechanism includes inputting matching according to worm gear as described above, with the worm gear for axis connection with described The motor of the worm screw of conjunction and the driving worm screw rotation.

Preferably, the electric power steering further includes the control unit for controlling the torque of the motor.

It is according to the present utility model in another aspect, also providing a kind of electric power steering, the electric power steering includes The input shaft and drive that first end with the steering column of vehicle for connecting, second end with the steering drive axle of vehicle for connecting Move the worm gear mechanism of the input shaft rotation；

The worm gear mechanism includes inputting matching according to worm gear as described above, with the worm gear for axis connection with described The motor of the worm screw of conjunction and the driving worm screw rotation；

Wherein, being axially facing for the oil storage tank the first of the worm gear rolls tiltedly, and first side is towards the input The first end of axis.

Another aspect according to the present utility model, also provides a kind of vehicle, and the vehicle is provided with as described above electronic Steering system.

The electric transmission system and vehicle are identical as advantage possessed by above-mentioned worm gear compared with the existing technology, herein It repeats no more.

Other features and advantages of the utility model will the following detailed description will be given in the detailed implementation section.

Detailed description of the invention

The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new The exemplary embodiment and its explanation of type are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 is the structural schematic diagram according to the worm gear in an embodiment of the utility model；

Fig. 2 is to show the oil storage tank on worm gear in the part-structure enlarged drawing of piecewise dam axis；

Fig. 3 is the structural schematic diagram of worm gear shown in FIG. 1 from the side；

Fig. 4 is enlarged drawing at A in Fig. 3；

Fig. 5 is the structural schematic diagram according to worm gear and worm screw cooperation in an embodiment of the utility model；

Fig. 6 is the structural schematic diagram according to electric power steering in an embodiment of the utility model；

Fig. 7 is the structural representation of steering column and the steering drive axle connection of electric power steering shown in fig. 6 and vehicle Figure.

Description of symbols:

1- worm gear；11- wheel body；The 12- gear teeth；13- oil storage tank；2- worm screw；3- motor；4- input shaft；41- first end；42- Second end；5- steering column；6- steering drive axle；7- control unit.

Specific embodiment

Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.

It should be noted that in the absence of conflict, the spy in embodiment and embodiment in the utility model Sign can be combined with each other.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower", The orientation or positional relationship of the instructions such as "left", "right", "top", "bottom", " axial direction ", " radial direction ", " circumferential direction " is based on shown in attached drawing Orientation or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as practical new to this The limitation of type.In addition, " inside and outside " refers to the inside and outside of the profile relative to each component itself.

In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include at least one this feature.

The utility model provides a kind of worm gear, as shown in Figure 1-3, the worm gear includes on wheel body 11 and the wheel body 11 along circle Multiple gear teeth 12 of week setting, wherein being provided with the oil storage tank 13 for oil storage on the side of the gear teeth 12.

Worm gear provided by the utility model is due to being provided with oil storage tank 13, when being assemblied in turbine and worm decelerator (as shown in Figure 5), the grease being applied on worm gear 1 can also enter in oil storage tank 13, in addition to being attached to worm wheel surface in the later period In use process, worm gear 1 engaged with worm screw 2 can by the grease continuous production oil film in oil storage tank 13 so that worm gear 1 with Good lubrication is obtained between worm screw 2, avoids causing dry grinding between worm and gear to generate abnormal sound because grease really lacks.

It, can be to avoid Vehicular turn process in turbine and worm decelerator of the worm gear for the electric power steering of vehicle Middle generation abnormal sound is conducive to promote automotive quality.

In preferred embodiments of the present invention, on the opposite two sides side of each gear teeth 12 of worm gear respectively It is provided with oil storage tank 13, and is respectively arranged with multiple oil storage tanks 13 on each side.

Preferably, multiple oil storage tanks 13 on each side are in piecewise dam axis, i.e., multiple oil storage tanks 13 Line is formed as the broken line of bending, as shown in Figure 2.Oil storage tank 13 presses piecewise dam axis on the surface of worm-gear toothing, can increase The lubrication area of grease.

Preferably, the oil storage tank 13 is circular trough, and the side for being axially facing the wheel body 11 of the oil storage tank 13 Inclination.As shown in Figure 3 and Figure 4, the right side inclination of the oil storage tank 13 being axially facing in figure.In this way, court on the right side of this of worm gear When upper arrangement, the axial direction of oil storage tank 13 tilts upward, consequently facilitating the holding of grease.

Another aspect according to the present utility model also provides a kind of electric power steering, as shown in Figure 6 and Figure 7, the electricity Dynamic steering system includes the input that first end 41 is used to connect with steering column 5, second end 42 is used to connect with steering drive axle 6 The worm gear mechanism that axis 4 and the driving input shaft 4 rotate；The worm gear mechanism includes connecting with the input shaft 4 The worm gear as described above 1 connect, the motor 3 rotated with the worm screw 2 of the worm gear 1 cooperation and the driving worm screw 2.It is driving When member's driving steering column 5 turns to, motor 3 can drive turbine and worm decelerator to play the role of power-assisted to the steering of vehicle.

The electric power steering further includes the control unit 7 for controlling the torque of the motor 3.The control unit 7 can To acquire the parameter such as steering column 5 is applied to the torque of input shaft 4, the size of current of motor 3 is controlled to control motor Torque to the steering of vehicle plays the role of power-assisted.

Another aspect according to the present utility model also provides a kind of electric power steering, which includes the One end 41 is used for the input shaft 4 connecting with the steering column 5 of vehicle, second end 42 is used to connect with the steering drive axle 6 of vehicle And the worm gear mechanism that the driving input shaft 4 rotates；The worm gear mechanism includes connecting with the input shaft 4 Worm gear 1, the worm screw 2 cooperated with the worm gear 1 and the motor 3 for driving the worm screw 2 to rotate as described above.

Wherein, being axially facing for the oil storage tank 13 on worm gear 1 the first of worm gear 1 rolls tiltedly, and first side is towards institute State the first end 41 of input shaft 4.The electric power steering is being applied to vehicle, first end 41 and the vehicle of input shaft 4 in this way When steering column 5 connects, first side of worm gear 1 is upwardly disposed, so that the oil storage tank 13 on worm gear can be convenient oil storage.

Another aspect according to the present utility model, also provides a kind of vehicle, and the vehicle is provided with as described above electronic Steering system.The electric power steering of the vehicle uses the turbine and worm decelerator with oil storage tank, it is possible to reduce vehicle turns To when generate abnormal sound, promote the perception of driver.

The foregoing is merely the better embodiments of the utility model, are not intended to limit the utility model, it is all Within the spirit and principles of the utility model, it is practical new to should be included in this for any modification, equivalent replacement, improvement and so on Within the protection scope of type.

Claims (10)

1. a kind of worm gear, which is characterized in that the worm gear include circumferentially be arranged on wheel body (11) and the wheel body (11) it is more A gear teeth (12), wherein being provided with the oil storage tank (13) for oil storage on the side of the gear teeth (12).

2. worm gear according to claim 1, which is characterized in that set respectively on the opposite two sides side of the gear teeth (12) It is equipped with the oil storage tank (13).

3. worm gear according to claim 1, which is characterized in that be respectively arranged on each side of the gear teeth (12) more A oil storage tank (13).

4. worm gear according to claim 3, which is characterized in that multiple oil storage tanks (13) on each side are in Piecewise dam axis.

5. worm gear described in any one of -4 according to claim 1, which is characterized in that the oil storage tank (13) is circular trough.

6. worm gear according to claim 5, which is characterized in that the oil storage tank (13) is axially facing the wheel body (11) Side inclination.

7. a kind of electric power steering, which is characterized in that the electric power steering includes that first end (41) is used for and steering tube The input shaft (4) and the driving input shaft (4) that column (5) connection, second end (42) are used to connect with steering drive axle (6) turn Dynamic worm gear mechanism；

The worm gear mechanism includes being connect according to claim 1 described in any one of -5 with the input shaft (4) Worm gear (1), the motor (3) with the worm screw (2) of the worm gear (1) cooperation and driving worm screw (2) rotation.

8. electric power steering according to claim 7, which is characterized in that the electric power steering further includes for controlling Make the control unit (7) of the torque of the motor (3).

9. a kind of electric power steering, which is characterized in that the electric power steering includes that first end (41) are used for and vehicle The input shaft (4) and driving institute that steering column (5) connection, second end (42) are used to connect with the steering drive axle (6) of vehicle State the worm gear mechanism of input shaft (4) rotation；

The worm gear mechanism includes the worm gear according to claim 6 (1) connecting with the input shaft (4) and institute State the worm screw (2) of worm gear (1) cooperation and the motor (3) of driving worm screw (2) rotation；

Wherein, being axially facing for the oil storage tank (13) the first of the worm gear (1) rolls tiltedly, and first side is towards described defeated Enter the first end (41) of axis (4).

10. a kind of vehicle, which is characterized in that the vehicle is provided with electronic according to any one of claim 7-9 Steering system.