KR101928755B1

KR101928755B1 - Automotive transmission

Info

Publication number: KR101928755B1
Application number: KR1020150132554A
Authority: KR
Inventors: 박정호
Original assignee: 에스엘 주식회사
Priority date: 2015-09-18
Filing date: 2015-09-18
Publication date: 2018-12-13
Also published as: KR20170034187A

Abstract

A vehicular transmission according to an embodiment of the present invention includes a knob operated by a driver, a lever that moves in conjunction with an operation of the knob, and a driver that pushes or pulls one side of the lever to move the lever, And a voice coil motor for providing a reaction force to the bobbin, wherein the voice coil motor comprises: a bobbin having a coil wound on a side thereof; a housing accommodating at least a part of the bobbin and being movably provided relative to the bobbin; A first yoke provided at one end of the magnet and having a first thickness and a second yoke provided at the other end of the magnet and having a second thickness greater than the first thickness, .

Description

[0001] Automotive transmission [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a vehicular transmission, and more particularly, to a vehicular transmission that is positioned in a vehicle interior and allows a driver to select a speed change stage.

In order to realize a vehicle speed ranging from low speed to high speed by using an engine having an engine speed within a certain range, a vehicle generally mounts a speed change device that changes the gear ratio to the rpm of the engine and changes the rotation speed of the drive wheel. The vehicle transmission also includes a function of reversing the output of the engine to reverse the vehicle.

The driver can change the gear ratio by operating the knob located next to the driver's seat and selecting the gear position.

The transmission is broadly divided into a manual transmission and an automatic transmission.

The manual transmission is a shift device that directly selects the gear positions of the first, second, third, and fourth stages in accordance with the traveling speed of the vehicle. The automatic transmission includes a traveling speed of the vehicle, an engine load, The ECU of the vehicle automatically adjusts the speed change stage according to the opening amount and the like.

The automatic transmission generally includes a P stage used for driving a vehicle at an emergency, an D stage used for advancing the vehicle, an R stage used for backing the vehicle, and an N stage for blocking the output of the engine from being transmitted to the drive wheel And a speed change stage.

The operator can select each gear by using the knob. The representative types of knobs are lever type and dial type. In addition, there are some vehicles with each speed range button type.

The common lever type is configured such that the gear positions are arranged in the order of PRND and the lever is moved in the linear direction to select each gear position. In recent years, as a lever type, the position of the gear position of the PRND is not fixed, but the lever is configured to return after being tilted in place according to the driver's operation, so that the shift position can be selected in such a manner that the PRND is sequentially changed in the tilting direction of the lever Device is being used.

On the other hand, the dial type is configured so that the gear range of the PRND is located at the periphery of the dial which rotates within a certain angle range, and the gear range is selected by positioning a specific point of the dial at each gear range of the PRND.

A shift device equipped with a lever type or dial type knob tactilely transmits a sense of throttling so that when the driver selects the speed change stage of the PRND, the change of the speed change stage and the knob are located at the respective speed change stages. In order to realize such a feeling of thrashing, a dredging device is provided in the transmission. However, a conventional design has required a complicated structure because it realizes a thief feeling using a mechanical structure.

Further, in order to stably drive the vehicle, when changing the speed change stage from the D-stage to the P-stage or R-stage, or vice versa, the change from the P-stage or R-stage to the D-stage should be made only in a state where the vehicle is almost stationary. To this end, the conventional transmission is provided with a separate blocking device that allows the change of the gear position only when a certain condition is satisfied, and prevents the movement of the knob in such a manner that the above-described shift is not possible.

Recently, a voice coil motor is applied to an automatic transmission, and a thrill feeling sensed during shifting is realized by using the thrust of a voice coil coater, and the movement of the knob is inhibited if necessary.

The voice coil motor is a motor composed of a stator and a mover that moves in the forward and backward direction from the stator, and is a motor that moves the mover using the magnetic field of the magnet and the attractive force and the repulsive force resulting from the action of the electric field generated from the coil.

The voice coil motors have the advantage of having a fast reaction speed, but the thrust at the initial oscillation of the mover is rather low, and there is a disadvantage that there is a thrust deviation in the early and late stages.

A problem to be solved by the present invention is to provide a transmission for a vehicle to which a voice coil motor having improved thrust deviation in the early and late stages is applied.

The problems of the present invention are not limited to the above-mentioned problems, and other problems not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a vehicular transmission including: a knob operated by a driver; a lever that moves in conjunction with an operation of the knob; and a lever which is pushed or pulled by one side of the lever to move And a voice coil motor for providing a reaction force to a force for operating the knob by the driver, wherein the voice coil motor includes: a bobbin having a coil wound on a side thereof; at least a part of the bobbin is accommodated; A first yoke provided at one end of the magnet and having a first thickness, and a second yoke provided at the other end of the magnet and having a second thickness larger than the first thickness, And a second yoke having a thickness.

The bobbin may be a stator, and the housing may be a shifter.

The bobbin may be a mover, and the housing may be a stator.

The first yoke may be positioned between the housing and the magnet.

The magnet may have an S pole at one end in contact with the first yoke and an N pole at the other end in contact with the second yoke.

The first yoke may be formed integrally with the housing.

The first yoke and the second yoke may be disposed concentrically with the magnet.

The magnet may have an asymmetric magnetization distribution in which a distribution of polarities formed between the N pole and the S pole and adjacent to the second yoke is larger than a distribution of polarities formed adjacent to the first yoke.

Wherein the second yoke is disposed adjacent to any one of the housing or the bobbin that functions as a stator, and an asymmetrical magnetization distribution of the magnet is generated by an electromagnetic force generated by a polarity formed adjacent to the second yoke, The electromagnetic force generated by the polarity formed adjacent to the bobbin can be increased so that any thrust acting as a mover of the housing or the bobbin can be raised.

Other specific details of the invention are included in the detailed description and drawings.

The embodiments of the present invention have at least the following effects.

It is possible to operate the transmission for a vehicle more stably by using a voice coil motor having a small thrust deviation in the early and late stages and an excellent initial thrust.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a perspective view illustrating a voice coil motor according to an embodiment of the present invention.
2 is an exploded perspective view of a voice coil motor according to an embodiment of the present invention.
3 is a cross-sectional view of a voice coil motor according to an embodiment of the present invention.
FIGS. 4 to 6 are views for explaining a change in thrust according to the operation of the voice coil motor according to the embodiment of the present invention.
7 is a graph of a thrust force of a voice coil motor according to an embodiment of the present invention.
8 and 9 are graphs of the thrust force of the voice coil motor according to the comparative example.
10 is a perspective view showing a transmission for a vehicle according to an embodiment of the present invention.
11 is a side view showing an internal structure of a vehicular transmission according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Further, the embodiments described herein will be described with reference to cross-sectional views and / or schematic drawings that are ideal illustrations of the present invention. Thus, the shape of the illustrations may be modified by manufacturing techniques and / or tolerances. In addition, in the drawings of the present invention, each component may be somewhat enlarged or reduced in view of convenience of explanation. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for explaining a voice coil motor according to an embodiment of the present invention.

1 is a perspective view illustrating a voice coil motor according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of a voice coil motor according to an embodiment of the present invention, FIG. 3 is a cross- Sectional view of the voice coil motor.

1 to 3, a voice coil motor 10 according to an embodiment of the present invention includes a housing 110, a magnet 120, a first yoke 113, a second yoke 130, Shaft 140, bobbin 150, coil 160 and bushings 171,

The voice coil motor 10 according to the present embodiment is basically composed of the housing 110 and the coil 110 by an electromagnetic force generated by a magnetic field formed by the magnet 120 and an electric field formed by a current applied to the coil 160 The bobbin 150 has a driving principle in which the bobbin 150 moves relatively.

In the case of a stator in which the housing 110 is fixedly installed, the bobbin 150 functions as a moving mover. In the case of a stator in which the bobbin 150 is fixed, the housing 110 functions as a moving mover.

The voice coil motor 10 according to the present embodiment will be described as an example where the bobbin 150 is a stator and the housing 110 is a mover moving with respect to the bobbin 150 .

3, the shaft 140 forms a central axis of the voice coil motor 10. One end of the shaft 140 is exposed to the front of the housing 110 and the other end of the shaft 140 is exposed to the base plate 151 of the bobbin 150 And can be fixed to the shaft receiving end 151a to be formed.

The shaft 140 guides the moving direction of the housing 110, the magnet 120, the first yoke 113 and the second yoke 130 which move relative to the bobbin 150. The housing 110, the magnet 120, the first yoke 113, and the second yoke 130 are mover of the voice coil motor 10. The bobbin 150 and the coil 160 serve as the stator of the voice coil motor 10.

The bobbin 150 includes a base plate 151 and a coil cylinder 152 extending from one surface of the base plate 151.

As described above, at the center of the base plate 151, a shaft receiving end 151a for fixing the other end of the shaft 140 is formed. 3, the shaft receiving end 151a may protrude from the back surface of the base plate 151 such that a part of the other end of the shaft 140 is exposed.

The base plate 151 may be formed with a plurality of screw holes 151b used to fix the base plate 151 to a separate member. When the bobbin 150 is used as a stator, the base plate 151 is installed on a member provided with a fixed base plate 151. When the bobbin 150 is used as a mover, a base plate 151 is installed on a member providing thrust.

Meanwhile, as shown in FIG. 3, the coil cylinder 152 is extended to form a step with the base plate 151. The coil 160 is wound on the outer surface of the coil cylinder 152. The inner side of the coil cylinder 152 forms an empty space and forms a space in which the shaft 140 and the magnet 120 and the second yoke 130 installed in the housing 110 are accommodated or moved.

1 to 3, the housing 110 includes a side wall 111 surrounding at least a portion of the coil 160 and a cover 112 for substantially closing one end of the side wall 111 do.

3, the cover 112 is formed to extend from one end of the side wall 111 so as to be substantially perpendicular to the side wall 111. As shown in Fig.

The cover 112 may be formed with a plurality of screw holes 112a used to fix the cover 112 to a separate member. When the housing 110 is used as a stator, the cover 112 is installed on a member to which the cover 112 is fixed. When the housing 110 is used as a mover, the cover 112 is installed on the member to provide thrust.

As shown in FIG. 3, a first yoke 113 is provided on the inner side of the cover 112. The first yoke 113 may extend from the first cover portion 812 to the inside of the housing 110. The first yoke 113 may be disposed concentrically with the magnet 120 and the diameter of the first yoke 113 may correspond to the diameter of the magnet 120.

The first yoke 110 forms a magnetic flux distribution of the magnetic field formed by the magnet 120 substantially perpendicular to the magnet 120 and / or the coil 160, thereby minimizing unnecessary leakage flux.

Although the first yoke 113 is formed integrally with the cover 112 in this embodiment, the first yoke 113 may exist in a separate structure from the cover 112.

A first shaft hole 112b through which the shaft 140 passes may be formed at the center of the cover 112. [ The first shaft hole 112b is formed to extend through the first yoke 131.

The inner diameter of the first shaft hole 112b may be larger than the outer diameter of the shaft 140 and the first bushing 171 may be interposed between the first shaft hole 112b and the shaft 140. [ The first bushing 171 prevents direct contact between the first shaft hole 112b and the shaft 140 and allows the housing 110 to move smoothly along the shaft 140. [

The first yoke 131 may have a first assembly stage 113a protruding from the first shaft hole 112b.

The housing 110 and the first yoke 131 may be formed of S45C, permalloy, amorphous, directional electromagnetic steel plate, non-directional electromagnetic steel plate, pure iron, or the like.

As shown in FIG. 3, a magnet 120 is disposed on the back surface of the first yoke 131. The magnet 120 may be a magnet body of strong magnetic force such as neodymium.

A second shaft hole 121 through which the shaft 140 passes is formed at the center of the magnet 120.

A second assembly stage 122 may be formed on one surface of the magnet 120. The second assembly stage 122 may be formed to be depressed corresponding to the first assembly stage 113a around the second shaft hole 121. [ 2 and 3 illustrate a type in which the first assembly stage 113a is protruded and the second assembly stage 122 is recessed, however, the male and female relationships between the two assembly stages 122 can be changed.

A third assembly end (not shown) may be recessed around the second shaft hole 121 on the back surface of the magnet 120.

2 and 3, a second yoke 130 is disposed on the back surface of the magnet 120. As shown in FIG. The second yoke 130 forms a magnetic flux distribution of the magnetic field formed between the magnet 120 and the coil 160 by the magnet 120 so as to be substantially perpendicular to the magnet 120 and / or the coil 160, thereby minimizing unnecessary leakage flux.

The second yoke 130 may be formed of S45C, permalloy, amorphous, directional electromagnetic steel plate, nonoriented electromagnetic steel plate, pure iron, and the like. The first yoke 131 and / or the housing 111 And may be formed of the same material.

A third shaft hole 131 through which the shaft 140 passes is formed at the center of the second yoke 130.

A fourth assembly stage 132 may be formed on one surface of the second yoke 130 and protrude from the third shaft hole 131 in correspondence with the third assembly stage. 2 and 3 illustrate a type in which the third assembly end is recessed and the fourth assembly end 132 is protruded, but the male and female relationship between the two ends can be changed.

A bush mounting groove 133 having an expanded inner diameter of the third shaft hole 131 is formed on the back surface of the second yoke 130. A second bush 172 may be interposed between the bush mounting groove 133 and the shaft 140.

Similarly to the first bushing 171, the second bushing 172 prevents direct contact between the second yoke 130 and the shaft 140, and the second yoke 130 smoothly moves along the shaft 140 Move.

The magnet 120 is mounted on the bobbin 150 and the coil 160 is mounted on the bobbin 150. In this embodiment, the magnet 120 is mounted in the housing 110 and the coil 160 is mounted on the bobbin 150, May be mounted on the housing 110.

3, the first yoke 113, the magnet 120, and the second yoke 130 are concentrically arranged to have substantially the same diameter, so as to maintain a predetermined distance from the side wall 111. As shown in FIG.

At this time, the coil 160 and the coil cylinder 152 are located in the space 114 between the first yoke 113, the magnet 120, and the second yoke 130 and the side wall 111. The coil 160 and the coil cylinder 152 are disposed in the space 140 as the housing 110, the first yoke 113, the magnet 120, and the second yoke 130 slide integrally along the shaft 140 114).

3, the voice coil motor 10 according to the present embodiment is formed such that the thickness t2 of the second yoke 130 is thicker than the thickness t1 of the first yoke 113. As shown in FIG. The thickness t1 of the first yoke 113 and the thickness t2 of the second yoke 130 mean the axial length of the shaft 140. [

The voice coil motor 10 according to the present embodiment improves the thrust of the voice coil motor 10 by making the thickness t2 of the second yoke 130 thicker than the thickness t1 of the first yoke 113 . This will be described in detail with reference to FIGS. 4 to 6. FIG.

FIGS. 4 to 6 are views for explaining a change in thrust according to the operation of the voice coil motor according to the embodiment of the present invention.

4 to 6, the voice coil motor 10 includes a housing 110, a magnet 120, a first yoke 113, and a second yoke 130 integrally formed with the bobbin 150 and the coil 150. [ Relative movement is performed within a certain distance range with respect to the moving body 160. The housing 110, the magnet 120, the first yoke 113 and the second yoke 130 move forward or backward according to the direction of the current flowing through the coil 160. [

4 to 6, the moving distance of the housing 110 is the shortest in FIG. 4, and the moving distance of the housing 110 is increased in the order of the state of FIG. 5 and the state of FIG.

As shown in FIG. 4, the magnet 120 is disposed such that one end thereof contacting the first yoke 113 is an S pole, and the other end thereof contacting the second yoke 130 is an N pole. Therefore, a magnetic force distribution in a substantially counterclockwise direction is formed with reference to Fig.

The current I1 flows counterclockwise as viewed from the bobbin 150 at the cover 112 of the housing 110 in order to move the housing 110 in one direction (leftward in FIG.

4, the direction of the magnetic field B1 is the direction from the second yoke 130 to the coil 160, and the current in the counterclockwise direction (the direction from the second yoke 130 to the second yoke 130) The first yoke 130 is subjected to electromagnetic force F1 in one direction.

4, the direction of the magnetic field B2 is the direction from the coil 160 toward the first yoke 113 and the direction from the counterclockwise current I1 The electromagnetic force F2 in the other direction is applied to the first yoke 113. As a result,

The electromagnetic force F1 acting on the side of the second yoke 130 acts on the movement of the housing 110 in a forward direction while the housing 110 moves in one direction, The electromagnetic force F2 acts on the movement of the housing 110 in a reverse direction.

Accordingly, the thrust is reduced by the electromagnetic force F2 acting on the side of the first yoke 113 at the time of the initial oscillation of the housing 110. [

The thickness t1 of the first yoke 113 is set to be thinner than that of the second yoke 130 and the thickness t2 of the second yoke 130 is set to be The electromagnetic force F2 generated in the direction opposite to the thrust is reduced and the electromagnetic force F1 generated in the forward direction in the thrust is increased as compared with the conventional voice coil motor.

The thickness t2 of the second yoke 130 is formed thicker than the thickness t1 of the first yoke 113 so that the magnet 120 has an N pole The distribution has a large asymmetric magnetization distribution.

As shown in FIG. 4, as the magnet 120 has a relatively large asymmetrical magnetization distribution of the N poles, the magnet 120 moves toward the outside of the housing 110 forming the electromagnetic force F1 generated in the forward direction in the thrust The generation area of the magnetic field B1 is widened, and the electromagnetic force F1 generated in the forward direction in the thrust increases. In contrast, since the distribution of the S pole is relatively small, the electromagnetic force F2 generated in the opposite direction to the thrust is reduced.

As shown in FIG. 5, if the housing 110 advances in one direction than the state of FIG. 4 and the S pole region of the first yoke 113 and the magnet 120 does not overlap with the coil 160, The electromagnetic force generated in the opposite direction almost disappears, and the electromagnetic force F3 generated in the normal direction in the thrust acts almost as thrust.

Therefore, the voice coil motor 10 exhibits a large thrust in the state of FIG. 5 as compared with FIG.

6, if the housing 110 is further advanced in one direction than the state of FIG. 4 and most of the N pole region of the magnet 120 does not overlap with the coil 160, The generation area of the magnetic field B1 toward the outside of the housing 110 forming the electromagnetic force F4 is narrowed so that the electromagnetic force F4 generated in the forward direction in the thrust becomes smaller than the electromagnetic force F3 generated in the state of FIG. do.

Therefore, the voice coil motor 10 exhibits a smaller thrust than the state shown in Fig. 5 in the state of Fig. 6, and the thrust decreases gradually as the housing 110 further advances in one direction.

7 is a graph of a thrust force of a voice coil motor according to an embodiment of the present invention.

Therefore, the thrust force of the voice coil motor 10 is shown as shown in Fig.

As described above, in the early stage of the movement of the housing 110 (the state of FIG. 4), the thrust is partially reduced due to the electromagnetic force F2 generated in the direction opposite to the thrust. Thereafter, in the middle of the movement of the housing 110 (the state shown in FIG. 5), the electromagnetic force generated in the opposite direction to the thrust is almost eliminated, and the thrust gradually increases. 6), the generation area of the magnetic field B1 toward the outside of the housing 110, which forms the electromagnetic force F4 generated in the forward direction in the thrust, becomes narrow, and the thrust .

8 and 9 are graphs of the thrust force of the voice coil motor according to the comparative example.

FIG. 8 is a graph showing the thrust force of the voice coil motor for the comparative experiment, in which the thickness of the second yoke 130 is kept constant and the thickness of the first yoke 113 is changed.

The G1 graph (solid line) is a graph of the thrust force of a conventional voice coil motor in which the first yoke 113 and the second yoke 130 have the same thickness of 10 mm. The G2 graph (dashed line) The thickness of the first yoke 113 and the thickness of the second yoke 130 are set to 6 mm and 10 mm, respectively, and the graph G3 (dotted line) And a G4 graph (two-dot chain line) is a graph of the thrust force of the voice coil motor in which the thicknesses of the first yoke 113 and the second yoke 130 are 4 mm and 10 mm, respectively.

As can be seen from the graphs G1, G2, G3 and G4, it can be seen that as the thickness of the first yoke 113 is reduced, the initial thrust is improved.

As can be seen from the graphs of G1, G2 and G3, the smaller the thickness of the first yoke 113 is, the smaller the thrust deviation D1 and D2 of the first half and the second half of the housing 110 gradually decrease have. Particularly, in the case of G3 in which the first yoke 113 and the second yoke 130 have the thicknesses of 6 mm and 10 mm, respectively, the early and late stages of the movement of the housing 110 show substantially the same thrust.

However, in the case of G4 having the thicknesses of the first yoke 113 and the second yoke 130 of 4 mm and 10 mm respectively, the initial thrust is better than that of G3, but the thrust of the latter half is reduced, And the thrust deviation D4 is generated again.

9 is a graph showing the thrust force of the voice coil motor only for comparison test while the thickness of the first yoke 113 is kept constant and the thickness of the second yoke 130 is changed.

The graph G5 (dotted line) is a graph of the thrust force of the voice coil motor having the thicknesses of the first yoke 113 and the second yoke 130 of 10 mm and 14 mm, respectively. And the thickness of the second yoke 130 are 10 mm and 8 mm, respectively. The G7 graph (dotted line) shows the thicknesses of the first yoke 113 and the second yoke 130 are 10 mm and 6 mm Of the voice coil motor.

As can be seen from the graphs of G5, G6 and G7, when the thickness of the second yoke 130 is G5 which is thicker than that of the first yoke 113, the thrust of the initial movement of the housing 110 is improved. In the case of G6 and G7 It can be seen that the thrust deviation in the early stage and the late stage of the movement of the housing 110 is smaller.

Hereinafter, a transmission for a vehicle to which the voice coil motor 10 according to the embodiment of the present invention described above is applied will be described.

FIG. 10 is a perspective view illustrating a transmission for a vehicle according to an embodiment of the present invention, and FIG. 11 is a side view illustrating an internal structure of a vehicular transmission according to an embodiment of the present invention.

10, a vehicular transmission 1 according to an embodiment of the present invention includes a knob 30 protruding from an upper portion thereof and a knob 30 disposed at a lower portion of the knob 30 and surrounding the knob 30 A first side housing 22 coupled to a lower portion of one side of the upper housing 21; and a second side housing 23 coupled to a lower portion of the other side of the upper housing.

The knob 30 and the upper housing 21 are installed so as to be exposed to the room between the center fascia of the vehicle interior and the center console box. The first side housing 22 and the second side housing 23 located at the lower portion of the upper housing 21 are not exposed to the interior of the vehicle but are located in the space leading from the center fascia to the center console box.

The knob 30 is operated by the driver, is moved forward or backward, and can select the gear stage in the order of PRND. In the case of a transmission supporting a manual shift mode, the knob 30 may be moved to the left or right and then forward or backward to select one of the first, second, third, and fourth gear positions.

As shown in FIG. 10, a parking button P may be formed on the upper housing 21. The parking button P of the upper housing 21 may be an operation button of an electric parking brake (EPB). (In this case, the speed change stage selected by the knob 30 can be made in the order of RND).

10, a rear housing 24, which forms the rear of the transmission 1, is located between the first side housing 22 and the second side housing 23. As shown in Fig. The rear housing 24 can be engaged with the bobbin 150 of the voice coil motor 10 (see Fig. 11) located in the outer housing 20. [ As shown in Fig. 10, the rear housing 24 can be coupled with the bobbin 150 via screws S1, S2. The screws S1 and S2 may be respectively inserted into the screw holes 151b formed in the base plate 151 of the bobbin 150 to fix the bobbin 150 to the rear housing 24.

The internal structure of the vehicular transmission (1) according to an embodiment of the present invention is shown in Fig. In other words, a lever 40 for supporting the knob 30, a lever holder 50 for rotatably supporting the lever 40, and a lever holder 50 for supporting the knob 30 are provided in the outer housing 20, A voice coil motor 10 is provided which is coupled to the link member 70, the link member 70 and the rear housing 24, respectively.

The lever 40 includes a rotary part 42 rotatably coupled to the lever holder 50, a knob coupling part 41 extending from the rotary part 42 to one side, and a knob coupling part 41 extending from the rotary part 42 to the other side As shown in Fig.

11, the knob coupling portion 41 extends substantially linearly from the upper end of the rotary portion 42 and is inserted into the knob 10 to be coupled with the knob 10.

The pivot portion (42) includes a lever pivot shaft (421) protruding from the side surface. The lever pivot shaft 421 is inserted into the holder through hole 51 formed in the lever holder 50 and rotatably couples the pivot portion 52 to the lever holder 30.

The lever holder 50 is fixed to any one of the outer housings 20 so that the lever 40 can rotate only about the lever pivot axis 421.

The extension portion 43 extends from the lower end of the rotary portion 42 to form an approximate 'S' shape. Therefore, the lever 40 has a vertically asymmetrical shape with respect to the rotary part 42, and a part of the extended part 43 is located in front of the knob joint part 41. [

A link member 70 for transmitting the output of the voice coil motor 10 to the lever 40 is provided between the lever 40 and the voice coil motor 10 due to the shape of the extension portion 43, 42, and as a result, the forward-backward length of the transmission 1 can be reduced.

Reduction in the front-rear direction length of the transmission 1 can improve the usability of the remaining space in that the space between the center fascia in which the transmission 1 is installed and the center console box can be more compact. For example, by making the transmission 1 compact, it is possible to make additional use such as adding a configuration for another convenience device to the remaining space.

11, the link member 70 includes a pair of engaging jaws 72 extending from one side of the flange 71 and the flange 71 toward the lower end of the extending portion 43. As shown in Fig. The pair of engaging jaws 72 are formed spaced apart from each other with a distance corresponding to the thickness of the extended portion 43. Although only one of the pair of engaging jaws 72 is shown in Fig. 11, another engaging jaw (not shown) is provided at the rear of the lever 40 with reference to Fig.

A pair of engaging jaws (72) is rotatably mounted on the extended portion (43) by a link rotating shaft (63).

The housing 110 of the voice coil motor 10 may be installed on the back surface of the flange 71. The housing 110 and the flange 71 can be engaged by the screws S3 and S4. The screws S3 and S4 may be respectively inserted into the screw holes 112b formed in the cover 112 of the housing 110 to fix the housing 110 to the flange 71. [

The link member 70 moves in a linear direction integrally with the housing 110 as the housing 110 protrudes and retracts relative to the bobbin 150 so that the lever 40 and the knob 30 are rotated do.

10 and 11 illustrate an example in which the bobbin 150 is fixed to the rear housing 24 as a stator and the housing 110 functions as a mover. However, according to the embodiment, the housing 110 is a stator, And the bobbin 110 may be coupled to the link member 70 as a mover.

The voice coil motor 10 according to the present embodiment improves the feeling of speed change when the user changes the speed change stage by using the knob 30 because the initial thrust is improved as compared with the conventional one and the thrust deviation in the early half and the late half is small. It is possible to provide a sufficient thrust capable of preventing the knob 30 from moving when the user moves the timing at a timing at which the shift is not allowed.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

10: voice coil motor 20: outer housing
21: upper housing 22: first side housing
23: second side housing 24: rear housing
30: Knob 40: Lever
41: knob coupling portion 42:
43: extension part 50: lever holder
51: holder through hole 63: link rotating shaft
70: link member 71: flange
72: coupling unit 110: housing
112: cover 113: first yoke
120: Magnet 130: Second yoke
140: shaft 150: bobbin
160: Coils 171 and 172: Bush
421: Lever rotation axis S1, S2, S3, S4: Screw

Claims

A knob operated by a driver;
A lever that moves in conjunction with an operation of the knob; And
And a voice coil motor for pushing or pulling one side of the lever to move the lever, or to provide a reaction force to a force that the driver operates the knob,
The voice coil motor includes:
A bobbin having a coil wound on its outer surface;
A housing accommodating at least a part of the bobbin and being movably installed relative to the bobbin;
A magnet disposed within the housing and at least a portion received within the bobbin;
A first yoke provided at one end of the magnet and having a first thickness; And
And a second yoke provided at the other end of the magnet and having a second thickness that is thicker than the first thickness,
Wherein the magnet has an asymmetric magnetization distribution in which a distribution of polarities formed between the N pole and the S pole adjacent to the second yoke is larger than a distribution of polarities formed adjacent to the first yoke.

The method according to claim 1,
Wherein the bobbin is a stator, and the housing is a mover.

The method according to claim 1,
Wherein the bobbin is a mover and the housing is a stator.

The method according to claim 1,
And the first yoke is located between the housing and the magnet.

5. The method of claim 4,
Wherein the magnet has an S pole on one end side in contact with the first yoke and an N pole on the other end side in contact with the second yoke.

The method according to claim 1,
And the first yoke is formed integrally with the housing.

The method according to claim 1,
And the first yoke and the second yoke are disposed concentrically with the magnet.

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The method according to claim 1,
Wherein the second yoke is provided adjacent to any one of the housing or the bobbin that functions as a stator,
Wherein an asymmetrical magnetization distribution of the magnet is larger than an electromagnetic force generated by a polarity formed by a polarity formed adjacent to the second yoke and adjacent to the first yoke, Thereby increasing the thrust of any one function.