KR101920041B1 - Actuator apparatus with gear assembly - Google Patents

Abstract

The present invention relates to an actuator apparatus with a gear assembly. According to the present invention, the actuator apparatus comprises: housings (10, 27) in which a first installation space (12) and a second installation space (22) extending in a mutual parallel direction are formed; a power means (30) installed in the first installation space (12), and provided with a motor to provide a rotating force; an operating means (60) installed in the second installation space (22) in parallel with the power means (30), and converting rotational movement to rectilineal movement while rotating by the rotating force transmitted from the power means (30); and a deceleration means (G) installed in a deceleration space connecting the first installation space (12) and the second installation space (22), and having a plurality of gears to decelerate operation of the power means (30) to be transmitted to an operation means (60). According to the present invention, all of the deceleration means (G) that is a gear assembly for deceleration, a motor, and an interlocking shaft (65) interlocked with the motor are installed in one housing (10). Therefore, assemblability can be improved without assembling an additional gear box to the motor and the interlocking shaft (65).

Description

[0001] The present invention relates to an actuator assembly,

The present invention relates to an actuator device, and more particularly, to an actuator device in which a gear assembly is integrally mounted on an actuator for tilting and telescoping operation of a steering column.

In order to improve the safety of the vehicle and to facilitate the operation of the driver, various devices are installed in the vehicle. Among them, the steering device is a device that allows the driver to freely change the traveling direction of the vehicle by turning the steering wheel. So that the driver can advance the vehicle in a desired direction.

Recently, as the concept of automobiles has changed with the increase of income and the improvement of living standards, the existing simple transportation system is now becoming a living space. In addition, as the time spent in the automobile increases, the development of a more comfortable and comfortable automobile is required, and thus the quality of various devices is rapidly increasing. As one of such trends, mounting of a tilt and telescopic steering apparatus using a driving motor that adjusts a relative position of a steering wheel to a driver is gradually expanded so that a driver can easily operate the steering wheel while comfortably operating.

Here, the motor-driven steering column system using a driving motor means that the position of the steering wheel used in a passenger car is adjusted by the driving force of the motor, and the tilt operation And telescope manipulation.

First, the tilting operation is to adjust the steering angle of the steering wheel in accordance with the posture of the driver sitting on the driver's seat. The telescope operation is performed by increasing or decreasing the length of the steering column to match the driver's body shape, .

An actuator including a motor is used as an apparatus for such tilt and telescopic manipulation. A separate gearbox can be combined with the actuator to provide a deceleration function, which allows strong torque and smooth operation.

However, there is a problem that it is difficult to accurately align the axes when assembling between the steering apparatus and the motor constituting the actuator. In particular, when the gear assembly (or gear box) for the deceleration function is assembled in separate water, the alignment between the motor and the steering gear is more difficult because the gear shape for interlocking with the gear assembly is added to the shaft of the motor .

Further, in order to improve the performance of the actuator, it is necessary to generate sufficient torque from the motor. But this requires several steps of deceleration and a lot of gear. As a result, not only the overall size of the actuator becomes large, but also a problem that precision alignment between the gears becomes more difficult in a process of assembling a plurality of gears.

Korean Patent No. 10-1379613 Korean Patent No. 10-1419987

SUMMARY OF THE INVENTION It is an object of the present invention to provide a gear assembly that performs a deceleration function in an integrated manner to improve assemblability and accurately align the shafts.

Another object of the present invention is to increase the output torque by applying a two-stage reduction structure to an integrated gear assembly.

According to an aspect of the present invention for achieving the above-mentioned object, the present invention provides a portable terminal comprising: a housing having a first installation space and a second installation space extending in parallel to each other; An operating means provided in the second installation space in parallel with the power means and adapted to convert a rotary motion into a linear motion while being rotated by a rotational force transmitted from the power means; And a deceleration means provided in a deceleration space connecting between the first installation space and the second installation space, the deceleration means including a plurality of gears for decelerating the driving of the power means and transmitting the decelerated driving force to the operating means, And a rotary shaft connected to the motor and rotated at least a part thereof inside the housing, A rotor shaft rotatable in association with rotation of the shaft, the rotor shaft having a rotation axis parallel to the rotor shaft and at least a part of which is located inside the housing, and a protruding end portion of the rotor shaft located in the first installation space of the housing Wherein the damping assembly supports one side of the rotor shaft to prevent clearance of the rotor shaft and one end of the interlocking shaft located in the second installation space of the housing is supported by a steel ball , The steel ball selectively moves in the direction of the interlocking axis as the set screw coupled to the housing is tightened to prevent axial sliding of the interlocking shaft.

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A first reduction gear installed on the reduction shaft and rotating in engagement with a drive gear provided on a rotor shaft of the power means; And a second reduction gear installed on the decelerating shaft and rotating in engagement with the driven gear provided on the interlocking shaft of the operating means so as to rotate between the drive gear and the first reduction gear and the second reduction gear- Deceleration is achieved.

The housing including the drive gear and the second reduction gear unit as a worm gear includes a first installation space in which the power means is installed, a second installation space extending in parallel with the first installation space and provided with operation means, And a deceleration space for connecting the first installation space and the second installation space in an orthogonal direction, wherein each of the first installation space and the second installation space is open at least one of the power means and the operation means Respectively.

The housing includes a housing body having the first installation space, the second installation space, and the deceleration space therein, and a housing cover coupled to the housing body to shield the first installation space, the second installation space, and the deceleration space .

The first installation space and the second installation space of the housing have a first shaft groove and a second shaft groove, respectively, and the lower and upper portions of the reduction shaft are rotatably inserted into the first shaft groove and the second shaft groove, respectively.

The rotation base plate is provided at the lower end and the upper end of the reduction shaft, and the first plate groove and the second plate groove corresponding to the rotation base plate are formed in the first installation space and the second installation space of the housing.

The open portion of the first installation space is shielded by the brush card assembly of the power means.

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The damping assembly includes a thrust plate assembled to an end portion of the rotor shaft and a damper which is in close contact with the thrust plate and is seated on the inner surface of the first installation space of the housing to support the rotor shaft.

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The pair of airbag-preventing bushes are provided on both sides of the driven gears provided on the interlocking shafts, respectively, so that the circumferential shafts of the interlocking shafts Avoid directional clearance.

An output nut is provided on the interlocking shaft and a thread corresponding to the outer circumferential surface of the interlocking shaft and the inner circumferential surface of the output nut is formed so that the output nut linearly moves along the longitudinal direction of the interlocking shaft as the interlocking shaft rotates.

The above-described integrated actuator assembly of a gear assembly according to the present invention has the following effects.

In the present invention, the deceleration means, which is a gear assembly for deceleration, and the interlocking shafts interlocked with the motor and the motor are both provided in one housing. Therefore, it is not necessary to assemble the gear box, which is a separate piece, to the motor and the interlocking shaft, thereby improving the assemblability and preventing the interleaving caused during the assembling process.

In the present invention, since all the power means, the operation means, and the deceleration means are provided in one housing, alignment between the shafts can be more accurately performed, thereby improving performance and reducing noise.

Particularly, in the present invention, since the operating means and the power means are disposed adjacent to each other in a parallel direction, the entire size of the actuator can be reduced.

Further, since the gear assembly incorporated in the present invention has a two-stage reduction structure, a large output torque can be produced. This allows the tilt or telescopic operation of the steering column to be made very smooth and stable, thus improving operability.

In the present invention, a damping assembly is applied to the power means, and a steel ball and a clearance prevention bush are applied to the operation means, thereby preventing clearance between the rotor shaft and the interlocking shaft. When the clearance between the rotor shaft and the interlocking shaft is prevented, stable rotation can be achieved in both of the shafts, thereby improving the operational reliability of the actuator device.

Also, the actuator according to the present invention can be equally applied to the tilt and telescopic operation of the steering column, so that the actuator can be shared.

1 is a perspective view showing a configuration of a tilt operation device to which an embodiment of an integrated gear-box type actuator according to the present invention is applied.
Fig. 2 is an exploded perspective view showing components of the embodiment of Fig. 1 in an exploded manner; Fig.
3 is a perspective view showing a configuration of a housing constituting the present invention.
4 is a perspective view showing a connection structure between a motor shaft and operating means constituting the present invention;
5 is a sectional view taken along a line I-I 'in Fig. 1;
6 is a sectional view taken along the line II-II 'of FIG. 2;
FIGS. 7A and 7B are operational states sequentially illustrating the operation of an embodiment of the gearbox integrated actuator device according to the present invention; FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be interpreted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be " connected, " " coupled, " or " connected. &Quot;

The integrated gear-unit actuator apparatus according to the present invention can be used as an actuator for tilting and telescoping operation of a steering apparatus. Hereinafter, the actuator for the tilting operation of the steering apparatus will be described as an example.

(Hereinafter referred to as an "actuator device") means adjusting the tilting operation of the steering device, that is, the fixing angle of the steering device. When the interlocking shaft 65 to be described below is rotated The output nut 80 rotates a hinge (not shown) while linearly moving and finally rotates the steering device. As a result, the actuator device according to the present invention enables linear movement of the output nut 80.

The structure of the present invention can be largely divided into a power unit 30, an operation unit 60 and a deceleration unit G. [ This is divided by function of each constitution, and it is not precisely classified by each constituent element. For example, some of the deceleration means (G) may be shared with the power means (30) and the operation means (60). 1, the operation of the power means 30 is in the direction of arrow 1, and the rotation of the deceleration means G in the direction orthogonal thereto is made in the direction of arrow 2, The power passing through the means G is transmitted to the operating means 60 to cause the operating means 60 to rotate in the direction of arrow ③. Finally, the output nut 80 is linearly moved in the direction of arrow ④.

The appearance and skeleton of the present invention are formed by the housings (10, 27). The housing (10, 27) is located between the power means (30) and the operating means (60) and has a deceleration means (G) inside. At least a part of the power means (30) and at least a part of the operating means (60) are installed inside the housing (10, 27). That is, in the present invention, the housings 10 and 27 are composed of the housing main body 10 and the housing cover 27, and the power unit 30 and the operation unit 60) and the deceleration means (G). The housings 10 and 27 may be made of a lightweight plastic insert, but may also be made of die casting.

As shown in FIG. 3, the housing main body 10 is formed with installation spaces opened in two directions orthogonal to each other. The installation space includes a first installation space (12) and a second installation space (22). The first installation space 12 and the second installation space 22 are formed parallel to each other inside the housings 10 and 27 and extend parallel to each other at a different height from each other with reference to FIG. The power means 30 and the operating means 60 are provided in the first installation space 12 and the second installation space 22 so that the rotor shaft 45 and the interlocking shaft 65 are naturally arranged in parallel to each other And has a rotation axis.

The housing body 10 has a deceleration space in which a deceleration means G is installed. The deceleration space is formed across the first installation space 12 and the second installation space 22 of the housing main body 10. The deceleration space includes a first installation space 12 and a second installation space 22, Respectively. The deceleration space extends in a direction orthogonal to the first installation space 12 and the second installation space 22, and a deceleration means G is provided to the deceleration space.

More precisely, the housing body 10 is composed of a first body 11 and a second body 21. The first body 11 houses a part of the power means 30, (21) houses a part of the operating means (60). For this purpose, the first body 11 and the second body 21 extend in parallel with each other. The first body 11 has a fastening flange 14 for fastening the yoke case 31 to be described below. A first fastener B1 is inserted into the fastening flange 14 to engage the fastening flange 14 with the yoke case 31. [ The fastening flange 14 has a first fastening hole into which the first fastening hole B1 is inserted.

The first body (11) has a first installation space (12). The first installation space 12 is a portion in which a part of the power means 30 is inserted and at the same time the deceleration means G is located. The first installation space (12) is formed in a direction parallel to the second installation space (22). More precisely, the first installation space 12 is opened in the direction of the power means 30 (right side in FIG. 3), and the second installation space 22 is parallel to the direction of the operation means 60 3 on the right side). The deceleration means G is located inside the housing body 10 and performs a deceleration function.

The first installation space 12 can be divided into two parts. A first opening 12a is formed on the outside of the first installation space 12, and the brush card assembly 50 is coupled to the first opening 12a. The first decelerating space 12b is provided with a first decelerating space 12b and a second decelerating space 12b communicating with the first opening 12a. The first decelerating space 12b is provided with a drive gear 48 of the power means 30, The reduction gear 108 is positioned and rotated in engagement with each other.

A first axial groove X1 is formed in the first installation space 12 below the first reduction space 12b. The first shaft groove X1 facilitates the rotation of the reduction shaft 100 to a position where a lower portion of the reduction shaft 100 is fitted. That is, the lower portion of the reduction shaft 100 is rotatably inserted into the first axial groove X1. The deceleration shaft 100 is rotatably fitted in the first shaft groove X1 and the second shaft groove X2 described below.

A first plate groove 12 'is formed under the first shaft groove X1. The first plate groove 12 'is a space in which the rotation base plates 101 and 102 coupled to the reduction shaft 100 are accommodated. The rotation base plates 101 and 102 are inserted into the first plate grooves 12 'to support the lower end of the reduction shaft 100. The first plate groove 12 'and the rotating base plates 101 and 102 may be omitted.

The first installation space 12 includes a first through hole H1 and a second through hole H2 that are spaced from each other along the longitudinal direction of the power unit 30. [ The rotor shaft 45 of the power unit 30 is installed by passing through the first through hole H1 and the second through hole H2 in order. Therefore, the first through holes H1 and the second through holes H2 are concentric.

On the other hand, the second body 21 extends in a direction parallel to the first body 11. The second body 21 is integrally formed with the first body 11. The second body 21 is provided with at least a part of the operating means 60. Reference numeral 24 denotes a second fastening hole 24 for engagement with the housing cover 27. A second fastening hole B2 is inserted into the second fastening hole 24 to fix the housing cover 27 to the first body 11 and the second body 21.

The second body (21) has a second installation space (22). Here, the interlocking shaft 65 of the operating means 60 is inserted, and the decelerating shaft 100 of the decelerating means G is also located. 3, the interlocking shaft 65 is located on the inner side of the second installation space 22, and the deceleration shaft 100 is located on the outer side. The driven gear 68 of the interlocking shaft 65 and the second reduction gear 118 of the reduction shaft 100 engage with each other in the second installation space 22. [ Therefore, the second installation space 22 is also the second deceleration space.

A second axial groove (X2) is provided above the second installation space (22). The second shaft groove (X2) assists rotation of the reduction shaft (100) to a position where an upper part of the reduction shaft (100) is fitted. That is, the upper portion of the reduction shaft 100 is rotatably inserted into the second shaft groove X2. Since the reduction shaft 100 is rotatably fitted in the first and second shaft grooves X1 and X2, the first shaft groove X1 and the second shaft groove X2 are concentrically formed.

A second plate groove 22 'is formed on the second shaft groove X2. The second plate groove 22 'is a space in which the rotation base plates 101 and 102 coupled to the reduction shaft 100 are accommodated. The rotation base plates 101 and 102 are inserted into the second plate grooves 22 'to support the upper end portion of the reduction shaft 100. The second plate groove 22 'and the rotating base plates 101 and 102 may be omitted.

In the second installation space 22, a pair of bush grooves 23 are formed. The bush grooves 23 are formed on both sides of the center of the second installation space 22, and a pair of the airbag bushes 67 to be described below are inserted. The clearance prevention bush 67 is fitted in the interlocking shaft 45 to prevent circumferential clearance of the interlocking shaft 45.

Reference numeral H3 denotes a third through hole H3. The third through hole H3 is a portion recessed in the longitudinal direction of the interlocking shaft 65 inside the second installation space 22. The end portion of the interlocking shaft 65 is connected to the third through hole H3 . The third through hole H3 helps the rotation of the interlocking shaft 65. In this embodiment, the third through hole H3 is perforated in the direction of the mounting bracket 25 described below.

The second body (21) has a mounting bracket (25). The mounting bracket 25 protrudes from the second body so that the actuator of the present invention can be fixed at a specific position. For this purpose, a bracket hole 25 'is formed in the mounting bracket 25. A separate bush may be fitted in the bracket hole 25 '.

The housing cover (27) is coupled to the housing main body (10). The housing cover 27 is coupled to the housing main body 10 to support the power means 30, the operation means 60 and the deceleration means G so that they can be stably interlocked. As shown in FIG. 2, the housing cover 27 forms the skeleton of the cover body 28, and the cover body 28 has the protruding end 28 '. The protruding end 28 'protrudes in the direction of the housing main body 10. The protruding end 28' surrounds the rotor shaft 45, the interlocking shaft 65 and the decelerating shaft 100, . The housing cover (27) and the housing body (10) are assembled to each other by a second fastener (B2).

Next, the power means 30 will be described. The power means 30 is installed in the left and right direction of the housing 10 and 27 and is provided with a motor to provide a turning force. The power unit 30 includes a yoke assembly, an armature assembly, and a brush card assembly 50.

The yoke assembly includes a plurality of magnets 41 on the inner circumferential surface of the yoke case 31. Reference numeral 34 denotes a yoke flange 34 which corresponds to the fastening flange 14 of the housing 10 and 27 described above and in which the first fastener B1 passes between the yoke flange 34 and the fastening flange 14 And then combines the two. A plurality of magnets 41 accommodated in the yoke case 31 are shown separated from each other in FIG.

The armature assembly includes a rotor shaft (45) and a core (42). The rotor shaft 45 extends in the vertical direction as a rotation axis, and a commutator 47 is disposed in the front portion thereof. The rotor shaft 45 is magnetized by a current supplied through the brush card assembly 50 to generate a rotational force. In the present invention, the commutator 47 is fitted in the rotor shaft 45 and is located inside the brush card assembly 50, not inside the yoke case 31.

A drive gear 48 is provided on the rotor shaft 45 of the armature assembly. The driven gear 68 is engaged with the first reduction gear 108 of the deceleration means G in the present embodiment so that the drive gear 48 is engaged with the deceleration means G together with the driven gear 68. In this embodiment, All. The driving gear 48 rotates together with the rotor shaft 45, and is engaged with the first reduction gear 108 to rotate to decelerate. In this embodiment, the drive gear 48 is a worm gear, and the drive gear 48 can also be seen as a part of the deceleration means G. [

The brush card assembly 50 supports the brush via a brush holder (not shown) and a brush spring (not shown). The brush card assembly 50 is configured to transmit an externally applied current to the rotor of the armature assembly through the main power supply unit 51, and to allow the brush to contact the commutator 47. 2, the brush is not positioned within the brush card assembly 50. When the commutator 47 on the rotor shaft 45 maintains contact with the brush while the assembling of the power means 30 is completed, the contact surface of the commutator 47 contacts the outer end of the rotor shaft 45 and the bearing (not shown) at the same time Are located in adjacent areas. The main power unit 51 may be regarded as a kind of connector.

A part of the front portion of the rotor shaft 45 of the power unit 30 is accommodated in the first installation space 12 of the first body 11 of the housings 10 and 27. [ More precisely, part of the front portion of the rotor shaft 45 is located inside the first body 11 of the housing 10, 27, and the most protruding portion is inserted into the second through hole H2. At this time, the driving gear 48 is engaged with the first reduction gear 108 of the deceleration means G in the first installation space 12. [

On the other hand, the rotor shaft 45 is prevented from shaft thrust by the damping assembly 52. The damping assembly 52 is located on the first installation space 12 of the housing 10 and 27 and more precisely on the second through hole H2. So as to prevent shaft clearance of the rotor shaft (45).

Referring to FIGS. 2 and 4, the damping assembly 52 includes a thrust plate 54 and a damper 55. The thrust plate 54 is assembled to the end of the rotor shaft 45 and the damper 55 is in close contact with the thrust plate 54. Accordingly, the damper 55 is seated in the first installation space 12 of the housings 10 and 27, that is, the second through hole H2 to support the rotor shaft 45. The damper 55 is made of an elastic material such as rubber. Reference numeral 53 denotes a thrust bushing 53 which is connected to the inside of the rotor shaft 45 relatively to the thrust plate 54. The thrust bushing 53 may fill the gap between the rotor shaft 45 and the inner surface of the vertical portion 23.

Next, the operation means 60 will be described. The operating means 60 converts the rotational motion of the power unit 30 into a linear motion of the output nut 80 while receiving the rotational force of the power unit 30. The operating means (60) is installed in the housing (10, 27) in a direction parallel to the power means (30).

The operating means 60 is rotated in conjunction with the rotation of the rotor shaft 45 and has a rotation axis in a direction parallel to the rotor shaft 45 and at least a part of the rotation shaft is in the second installation space of the housing 10, And an interlocking shaft 65 located inside the housing 22. As a result, the interlocking shaft 65 has a rotation axis parallel to the rotor shaft 45. At least a part of the interlocking shaft 65 is located inside the housing 10 or 27. More precisely, the interlocking shaft 65 is inserted through one of the openings in the second installation space 22, And is located inside the hole H3.

As described above, in the present invention, both the rotor shaft 45 and the interlocking shaft 65 are located inside the single housing 10, 27. Accordingly, the rotor shaft 45 and the interlocking shaft 65 may be formed of two separate housings 10, 27, or may have a smaller shaft clearance than an actuator having a separate gear box, have. In other words, since it is not necessary to assemble the gear box, which is a separate piece, to the motor and the interlocking shaft 65, not only the assembling property is improved, but also the intertwining occurring during the assembling process is prevented.

On the outer surface of the interlocking shaft 65, a lead screw 66 is provided. The leadscrew 66 may be threaded and integrally formed with the interlocking shaft 65 or may be made of discrete water and assembled to the interlocking shaft 65. The lead screw 66 is a portion to which the output nut 80 is coupled, and engages with the output nut 80 so that the output nut 80 can move linearly.

The driven shaft 65 is provided with a driven gear 68. The driven gear 68 is engaged with the interlocking shaft 65 and is rotated together to engage with the second reduction gear 118 of the reduction gear G. [ The driven gear 68 makes the rotating direction of the interlocking shaft 65 parallel to the rotating direction of the rotor shaft 45 in conjunction with the second reduction gear 118 of the speed reducing means G. [ To this end, in this embodiment, the drive gear 48 is a worm and the second reduction gear 118 is a worm gear engaged with a worm. The drive gear 48 and the driven gear 68 may be considered to constitute a part of the deceleration means G. [

On the other hand, the interlocking shaft 65 is provided with a clearance prevention bush 67. The clearance prevention bush 67 is provided on the rear side of the interlocking shaft 65 located in the second installation space 22 of the housing 10 and 27 and has a ring structure fitted to the interlocking shaft 65 . The pair of anti-air bushes 67 are provided on both sides of the driven gear 68 provided on the interlocking shaft 65. In this way, the clearance preventing bush 67 prevents circumferential clearance of the interlocking shaft 65. In this embodiment, the clearance prevention bushes 67 are inserted into the bush grooves 23 in the second installation space 22, respectively.

An output nut 80 is coupled to the interlocking shaft 65. The output nut 80 linearly moves along the interlocking shaft 65 to perform a tilting function of the steering apparatus. As shown in FIG. 6, a nut screw 86 corresponding to the lead screw 66 of the interlocking shaft 65 is provided on the inside of the output nut 80. The output nut 80 linearly moves along the interlocking shaft 65 while the lead screw 66 and the nut screw 86 are engaged and rotated. Since the output nut 80 is connected to the bracket 89 through the connecting portion 82, the output nut 80 can be linearly moved without rotating along the interlocking shaft 65.

Referring to FIG. 6, a steel ball 95 and a set screw 90 are provided in the second installation space 22 of the housing 10 and 27. More precisely, a set screw 90 is provided on the third through hole H3 side of the second body 21 and a steel ball 95 is provided between the set screw 90 and the end of the interlocking shaft 65. Therefore, one end portion of the interlocking shaft 65 is supported by the steel ball 95, and the steel ball 95 is selectively moved in the direction of the interlocking shaft 65 as the set screw 90 is tightened Thereby preventing axial movement of the interlocking shaft 65 while moving. The right and left direction in FIG. 6 is the axis clearance prevention direction by the steel ball 95, and the vertical direction perpendicular to the axial clearance 95 represents the axial clearance prevention direction by the above-described clearance prevention bush 67 described above.

The deceleration means G is for reducing the rotational speed of the power means 30 and increasing the size of the power. The first and second installation spaces 12, And the space (22). The deceleration means G includes a plurality of gears to decelerate driving of the power means and transmit it to the operating means.

2 and 4, the deceleration means G includes a first reduction gear 108 and a second reduction gear 108 on the lower portion and the upper portion of the reduction shaft 100 installed on the reduction space of the housing, A gear 118 is provided. The first reduction gear 108 is disposed on the reduction shaft 100 and rotates in engagement with the driving gear 48 provided on the rotor shaft 45 of the power unit 30. The driving gear is a worm gear, The gear 108 is a worm wheel. Accordingly, deceleration is performed between the driving gear (45) and the first reduction gear (108). Here, the reduction ratio is determined according to the gear ratio of the drive gear 45, which is a worm gear, and the first reduction gear 108, which is a worm wheel.

The second reduction gear 118 is installed on the reduction shaft 100 at a height different from that of the first reduction gear 108. The second reduction gear 118 is connected to a driven gear 68). Here, the second reduction gear 118 is a worm gear, and the driven gear 68 is a worm wheel. Therefore, deceleration is performed again between the second reduction gear 118 and the driven gear 68. Here, the reduction ratio is determined according to the gear ratio of the second reduction gear 118, which is a worm gear, and the driven gear 68, which is a worm wheel.

As a result, deceleration is effected through the decelerating means G constituting the present invention. The decelerating means G is arranged between the driving gear 48 and the first reduction gear 108 and between the second reduction gear 118 and the driven gear 68 Stage deceleration structure in which deceleration is performed. Therefore, the interlocking shaft 65 can have a large torque, which enables smooth and smooth operation of the output nut 80.

At the lower end and the upper end of the deceleration means G, there are rotating base plates 101 and 102, respectively. These serve to rotatably support the lower end and the upper end of the deceleration shaft 100 of the deceleration means G and are respectively inserted into the first shaft groove X1 and the second shaft groove X2 described above.

As described above, in the present invention, not only the power unit 30, the operation unit 60 and the deceleration unit G are installed in one housing 10 and 27 but also the damping assembly 52 is mounted on the power unit 30 And the operation means 60 is provided with a steel ball 95 and a clearance prevention bush 67 so that clearance between the rotor shaft 45 and the interlocking shaft 65 is prevented. This allows more accurate alignment between the axes, which can lead to improved performance and lowered noise.

Next, the operation of the actuator according to the present invention will be described.

FIGS. 6 and 7 illustrate the positions of the output nuts 80 being different from each other. As the output nut 80 moves, the bracket (hinge) coupled to the output nut 80 rotates to change the fixing angle of the steering apparatus. The linear movement of the output nut 80 can be naturally performed by the power means 30, the operating means 60 and the decelerating means G provided therebetween.

First, the power means 30 operates. When a current is not supplied to the brush card assembly 50 through the main power source unit 51, the brush arm assembly is transmitted to the rotor of the armature assembly, and the shaft is rotated. The worm gear, which is the driving gear 48 connected to the rotor shaft 45, is also rotated. At this time, the rotor shaft 45 is prevented from axial thrust by the damping assembly 52. The damping assembly 52 is located in the second through hole H2 of the housing 10 and 27 and abuts against the protruding end of the rotor shaft 45 to support the rotor shaft 45 .

The driving gear 48 rotates inside the first body 11 of the housings 10 and 27 and interlocks with the deceleration means G. [ More precisely, the drive gear 48 is engaged with the first reduction gear 108 of the deceleration means G to rotate the deceleration shaft 100. In this process, first-order deceleration occurs.

When the reduction shaft 100 rotates, the driven gear 68 engaged with the second reduction gear 118 of the reduction shaft 100 rotates. In this process, a second-order deceleration occurs. Therefore, in the present invention, the total of two deceleration occurs due to the deceleration means (G).

The decelerating means G performs two direction changes together with the decelerating function to convert the rotation direction of the rotor shaft 45 and the rotation direction of the interlocking shaft 65 in parallel and reduce the rotation speed to perform a deceleration function . Of course, in this process, the torque increases and the tilt angle of the steering apparatus can be smoothly rotated. In addition, the operating means 60 can be configured parallel to the power means 30 through two turns, thereby reducing the overall size of the actuator.

When the driven gear 68 is rotated, the operating means 60 operates. The operating means 60 is a part which actually operates the steering column, and converts the rotational motion into a linear motion. More precisely, when the interlocking shaft 65 is rotated, the output nut 80 linearly moves along the interlocking shaft 65, and the output nut 80 rotates the bracket (hinge) To adjust. For example, the angle of the steering column can be changed in the process of moving from FIG. 7 (a) to FIG. 7 (b). Of course, the operation in the opposite direction can also be done.

As described above, in the present invention, the power unit 30, the operating unit 60 and the decelerating unit G are all installed in one housing 10 and 27, and in particular, the power unit 30 is provided with the damping assembly 52 And the operation means 60 is provided with a steel ball 95 and a clearance prevention bush 67 so that clearance between the rotor shaft 45 and the interlocking shaft 65 is prevented. Therefore, stable rotation of both the shafts is possible, so that the operational reliability of the actuator device is improved and the noise can be reduced.

Meanwhile, the actuator according to the present invention can be equally applied to the tilt and telescopic operation of the steering column. Although not shown, the actuator may be used as an actuator for telescopic operation. Here, instead of the output nut 80, a telescopic nut is applied. The telescopic nut also linearly moves along the interlocking shaft 65 to allow the steering device to move back and forth. Thus, the actuator according to the present invention can be used in common.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the scope of the present invention but to limit the scope of the technical idea of the present invention. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: housing 11: first body
21: second body 30: power means
45: Rotor shaft 50: Brush card assembly
51: main power supply unit 52: damping assembly
60: operating means 65: interlocking shaft
80: Output nut 90: Set screw
100: Deceleration shaft 108: 1st reduction gear
118: 2nd reduction gear G: Deceleration means

Claims (14)

A housing having a first installation space and a second installation space extending in parallel directions,
Power means provided in the first installation space and provided with a motor to provide rotational force,
Operating means installed in the second installation space in parallel with the power means and converting rotational motion into linear motion while being rotated by the rotational force transmitted from the power means;
And a deceleration means provided in a deceleration space connecting between the first installation space and the second installation space, the deceleration means including a plurality of gears to decelerate driving of the power means and transmit the decelerated driving force to the operation means,
Wherein the power means includes a motor and a rotor shaft rotatably connected to the motor and rotated at least part of the inside of the housing, and the operating means is rotated in conjunction with the rotation of the rotor shaft, And at least a part of which has an interlocking shaft located inside the housing,
A damping assembly is connected to a protruding end portion of the rotor shaft located in the first installation space of the housing. The damping assembly supports one side of the rotor shaft to prevent clearance of the rotor shaft,
One end of the interlocking shaft located in the second installation space of the housing is supported by a steel ball, and the steel ball is selectively moved in the direction of the interlocking shaft as the set screw coupled to the housing is tightened, Thereby preventing an axial clearance of the interlocking shaft.
delete 2. The apparatus according to claim 1, wherein the deceleration means
A deceleration shaft installed in the deceleration space of the housing,
A first reduction gear installed on the reduction shaft and rotating in engagement with a drive gear provided on a rotor shaft of the power means,
And a second reduction gear installed on the reduction shaft at a different height from the first reduction gear and rotating in engagement with a driven gear provided on the interlocking shaft of the operation means,
And wherein the deceleration is performed between the drive gear-first reduction gear and the second reduction gear-driven gear, respectively.
4. The actuator assembly according to claim 3, wherein the drive gear and the second reduction gear are formed of a worm gear.
5. The apparatus of claim 4, wherein the housing
A first installation space in which the power means is installed,
A second installation space extending parallel to the first installation space and provided with operation means;
And a deceleration space connecting the first installation space and the second installation space in an orthogonal direction,
Wherein the first installation space and the second installation space are each opened to extend at least a part of the power means and the operation means, respectively.
6. The apparatus of claim 5, wherein the housing
A housing body having the first installation space, the second installation space and the deceleration space therein,
And a housing cover coupled to the housing main body to shield the first installation space, the second installation space, and the deceleration space.
[7] The apparatus of claim 6, wherein the first installation space and the second installation space of the housing have a first shaft groove and a second shaft groove, respectively, and the lower shaft and the second shaft shaft are rotatable Wherein the actuator is an integral unit of the gear assembly.
[8] The apparatus as claimed in claim 7, wherein the rotation base plate is provided at the lower end and the upper end of the reduction shaft, and the first plate space and the second plate space corresponding to the rotation base plate are provided in the first installation space and the second installation space, respectively, Is formed on the outer circumferential surface of the body portion.
2. The gear assembly-integrated actuator device according to claim 1, wherein an open portion of the first installation space is shielded by a brush card assembly of the power means.
delete 2. The assembly of claim 1, wherein the damping assembly
A thrust plate assembled to an end portion of the rotor shaft,
And a damper which is in close contact with the thrust plate and is seated on the inner surface of the first installation space of the housing to support the rotor shaft.
delete 12. The apparatus according to claim 11, wherein the interlocking shaft located in the second installation space of the housing is provided with a pair of airbag prevention bushes, and the pair of airbag prevention bushes are provided on both sides of the driven gear provided on the interlocking shaft Thereby preventing circumferential clearance of the interlocking shaft.
The output nut according to claim 13, wherein an output nut is provided on the interlocking shaft, and a screw thread corresponding to the outer circumferential surface of the interlocking shaft and the inner circumferential surface of the output nut is formed so that the output nut rotates in the longitudinal direction of the interlocking shaft Wherein the actuator is a linear actuator.

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