KR20150118663A - Vibration prevention device for motor - Google Patents

Abstract

Disclosed is a vibration prevention device for a motor. The vibration prevention device includes a case in which a housing, a rotation shaft and a motor including front and rear protrusion parts are mounted; a pressurizing part which provided in the case, and pressurizes and supports the front protrusion part; and a constraint maintaining part which is provided in the case, closely supports of an end of the rotation shaft from one side or both sides thereof, and prevents the vibration of the motor.

Description

VIBRATION PREVENTION DEVICE FOR MOTOR [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a motor vibration preventing device, and more particularly, to a motor vibration preventing device capable of reducing the generation of vibration and noise due to misassembly by making the quality of a motor uniform.

Generally, a self-contained door latch operation unit is a device that drives a motor to open a door by pulling a cable connected to the door ratchet.

The door ratchet operation unit includes a case formed with a groove for receiving a motor, a cover coupled with the case to cover the case, front and rear protrusions protruding from the front and rear sides of the housing of the motor, And front and rear seal rings which are held in contact with the front and rear protrusions and are held in the case.

At this time, the front seal ring is formed in a circular shape to support and support the outer circumferential surface of the front protruding portion of the motor housing to absorb the forward vibration of the motor, and the rear seal ring is formed in a circular shape to surround and support the outer circumferential surface of the rear protruding portion of the motor housing Absorbs the backward vibration of the motor.

However, in the conventional door ratchet operation unit, since the front and rear protrusions are covered with the front and rear seal rings, the assembly position is uniform due to the inter-axis distance and the scattering according to the assembling conditions There is no problem in case of normal assembling, but in case of erroneous assembling, vibration and noise due to poor assembling are increased. Therefore, there is a need to improve this.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent No. 10-0420316 entitled " Structure of Anti-Vibration Spindle Motor, 2004.02.14: Registered ".

It is an object of the present invention, which is created by the above-mentioned necessity, to restrain a housing and support an end portion of a rotary shaft by tightly supporting an end portion of the rotary shaft, Which can reduce the vibration of the motor.

According to an aspect of the present invention, there is provided a motor vibration preventive device comprising: a housing for housing a motor including a housing, a rotating shaft, and front and rear protrusions; A pressing portion provided in the case and pressing and supporting the front side projection; And a restraining holding part provided in the case, for preventing vibration of the motor by closely supporting the end part of the rotating shaft at one side or both sides thereof.

Further, the pressing portion may include: a fitting groove portion into which the front protruding portion is inserted; A first pressing protrusion protruding from one side surface of the fitting groove and pressing one outer peripheral surface of the front protrusion; And a second pressing protrusion protruding from the other side surface of the fitting groove so as to correspond to the first fitting protrusion and pressing the other outer circumferential surface of the axle shaft portion, wherein the first pressing protrusion and the second pressing protrusion And the first and second pressing protrusions are narrowed toward the end to press the front protruding portion in the form of a wedge.

In addition, the restraint holding portion may include: a support member that is held in contact with the end portion of the rotation shaft; And a damping member which is provided in the installation groove and absorbs vibration transmitted to the support member through the rotation shaft.

The damping member may include a release preventing portion for preventing the support member from being separated from the upper side. The release preventing portion may protrude upward from the upper surface of the damping member and may extend toward the upper surface of the support member inserted into the insertion groove. And the damping member is inserted into an installation groove provided in the case,

In addition, a locking portion is disposed on the outer side of the rotation shaft while covering both side edges of the support member so that the support member is slidably inserted into the installation groove portion. The locking portion has a width narrower than both sides of the damping member And the case is formed with a pressing portion which is inserted into the outside of the narrow portion and presses the outer side of the locking portion to support the side and side edges of the supporting member.

The motor vibration preventing device according to the present invention can prevent vibration and noise of the motor by supporting the front supporting portion of the motor housing by using the wedge-shaped pressing portion.

Further, according to the present invention, the end portion of the rotary shaft is elastically supported and restrained by using the restraining holding portion, so that vibration and noise caused by the rotation of the rotary shaft can be reduced.

Further, in the present invention, since the support member for supporting the end portion of the rotary shaft is wrapped by the soft damping member, the vibration can be efficiently absorbed.

Further, in the present invention, since the support member is hooked to the separation preventing portion provided on the damping member, the separation of the support member from the damping member can be prevented.

In addition, the present invention can prevent the lateral movement of the support member by forming the engagement portion on the damping member, wrapping both side edges of the support member, and pushing the narrow portion formed in the engagement portion with the contact portion.

Further, the present invention can prevent vibrations and noise caused by forward and backward flow of the housing by supporting the front and rear sides of the housing of the motor by using the close contact portion.

1 is a perspective exploded perspective view of a door ratchet operation unit according to an embodiment of the present invention.
2 is a plan view of a motor vibration preventing device according to an embodiment of the present invention.
3 is an enlarged view of the "A" part of FIG.
4 is a view showing a state where a front protruding portion of a motor is assembled to a pressing portion according to an embodiment of the present invention.
5 is an enlarged view of a portion "B" in FIG.
6 is an exploded perspective view of the "B" part of FIG.
7 is an enlarged view of a portion "C" in FIG.
Fig. 6 is an exploded perspective view of the "C"

Hereinafter, a motor vibration preventing apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective exploded perspective view of a door ratchet operation unit according to an embodiment of the present invention. FIG. 2 is a plan view of a motor vibration preventing apparatus according to an embodiment of the present invention.

FIG. 3 is an enlarged view of a portion "A" in FIG. 2, FIG. 4 is a view showing a state in which a front protruding portion of a motor is assembled to a pressing portion according to an embodiment of the present invention, FIG. 6 is an exploded perspective view of the "C" portion of FIG. 2, and FIG. 6 is an exploded perspective view of the "B"

1 to 8, a motor vibration damping device according to an embodiment of the present invention includes a case 10, a pressing portion 30, and a constraining holding portion 40.

The apparatus for preventing motor vibration according to the embodiment of the present invention is configured such that the motor 2 installed in the vehicle door ratchet operation unit is stably supported by the case 10 and covered with the lid 20, It is a device that prevents vibration from occurring.

At this time, when the motor 2 mounted on the case 10 is driven, the door ratchet operation unit for a vehicle rotates the rotary shaft 3, and the worm gear 7 coupled to the end of the rotary shaft 3 is engaged with a worm wheel (Not shown) by turning the gears 8 and the plurality of gears to pull the cable 9. In this way, if the motor 2 is driven frequently and the vibration generated by the motor 2 is not caught, noise such as noise may be generated. In other words, conventionally, in the process of assembling the motor 2 to the case 10 using the seal ring, vibration and noise generated in the motor 2 can not be effectively prevented due to the distance between the shafts and the attitude dispersion according to the assembly conditions , The vibration and noise of the motor 2 can be effectively prevented by using the pressing portion 30 and the restraining holding portion 40 described later in the motor vibration preventing device according to one embodiment of the present invention.

The case 10 seats the motor 2 including the housing 4, the rotating shaft 3 and the front and rear projecting portions 5 and 6. At this time, the front and rear protrusions 5, 6 protrude forward and rearward from the housing 4 at the position where the rotary shaft 3 is supported. The case 10 has a mounting groove 12 in which the housing 4 of the motor 20 is seated. A cover 20 corresponding to the shape of the case 10 is covered on the upper side of the case 10 and coupled to each other through a plurality of fastening members 22. [ The cover 20 may be provided with a groove portion for receiving an upper portion of the housing 4 of the motor 2 so as to correspond to the mounting groove portion 12 of the case 10. [

The pressing portion 30 is provided in the case 10 and presses and supports the front side projecting portion 5. [ The pressing portion 30 presses both side surfaces of the front protruding portion 5 while receiving the bottom surface and the side surface of the front protruding portion 5 so that the housing 4 of the motor 2 can be firmly supported.

The pressing portion 30 is provided with a fitting groove portion 32 into which the front side projection portion 50 is inserted and a first pressing projection portion 34 which protrudes from one side of the fitting groove portion 32 and which presses one outer peripheral surface of the front side projection portion 5 And a second pressing protrusion 36 protruding from the other side surface of the fitting groove 32 to correspond to the first fitting protrusion 34 and pressing the other outer circumferential surface of the front protrusion 5.

3 and 4, the distance D1 between the first pressing protrusion 34 and the second pressing protrusion 36 should be smaller than the outside diameter D2 of the front protrusion 5. [ At this time, the first and second pressing protrusions 34 and 36 are narrowed toward the end, so that the outer circumferential surface of the front protruding portion 5 can be pressed in the form of a wedge. It is preferable that the first pressing protrusion 34 and the second pressing protrusion 36 have a V-shaped cross section so as to be narrowed toward the end. When the distance D1 between the first pressing protrusion 34 and the second pressing protrusion 36 is smaller than the outer diameter D2 of the front protrusion 5 and the first and second pressing protrusions 34, The first and second pressing protrusions 34 and 36 are slightly contracted and pressed when the protrusion 5 is inserted into the groove 32 and the outer circumferential surface of the front protrusion 5 is wedged . Therefore, since the housing 4 is firmly restrained to the case 10, it is possible to prevent the motor 2 from coming off and to prevent vibration and noise due to misassembly as well as the normal assembly of the motor 2. [ An inclined surface portion 38 for guiding the entrance of the front side projecting portion 5 may be formed on the upper side of the first pressing projection 34 and the second pressing projection 36. The inclined surface portions 38 are formed in a pair facing each other, and gradually become narrower from the upper side to the lower side. At least one seating protrusion 39 for supporting the front protruding portion 5 may be formed on the bottom of the fitting groove portion 32. The upper surface of the seating projection 39 is formed to be bent so as to correspond to the curvature of the bottom outer diameter of the front side projecting portion 5. [ In the embodiment of the present invention, as shown in Fig. 4, the seating projections 39 are shown in a state in which two seating projections 39 are formed at set intervals.

5 to 8, the restraint holding portion 40 is provided in the case 10 and prevents the motor 2 from vibrating by closely supporting the end portion of the rotary shaft 3 on one side or both sides thereof. The restricting holding portion 40 presses the vibration generated in the rotating shaft 3 while the motor 2 is rotating so as to closely contact the end surface in the longitudinal direction of the rotating shaft 30 to thereby stably rotate the rotating shaft 3 without flowing, And noise can be prevented.

The restraint holding portion 40 is provided with a support member 42 which is held in contact with both end portions of the rotary shaft 3 and a support member 42 which is provided in the insertion groove portion 45, And a soft damping member (44) absorbing the vibration transmitted to the first and second wheels (42, 42). The support member 42 has a rectangular plate shape and is made of plastic and is closely supported on the end face of the rotation shaft 3. [ The supporting member 42 can be made of various materials other than plastic. The damping member 44 may be made of a rubber material having excellent elasticity or a soft synthetic resin such as silicon. The damping member 44 may be made of various materials other than rubber and synthetic resin. The insertion groove portion 45 is formed so as to pass through the damping member 44 so as to insert the slide member from one side while enclosing the support member 42. The insertion groove portion 45 is formed to support three sides of the support member 42 excluding a portion where the rotation shaft 3 is in contact.

The damping member 44 is provided with a separation preventing portion 46 for preventing the support member 42 from being separated from the upper side. The release preventing portion 46 is protruded from the damping member 44 so as to support the upper side of the insertion groove portion 45 to prevent the support member 42 from moving upward. The separation preventing portion 46 may protrude upward from the upper surface of the damping member 44 and extend to the upper surface of the support member 42. The damping member 44 is inserted into an installation groove 14 provided in the case 10.

The insertion groove portion 45 may be formed with a latching portion 48 disposed on the outer side of the rotary shaft 3 so as to surround both side edges of the support member 42 so that the support member 42 is slidably inserted. The engaging portion 48 is formed on the damping member 44 in such a manner that the engaging portion 48 is in close contact with both side edges of the support member 42 in the contact direction of the rotary shaft 3. [ 5 and 7, the pair of latching portions 48 are formed by bending the side edge of the support member 42 so as not to contact the outer surface of the rotation axis 3 . The narrow portion 50 may be formed on the outer side of the engaging portion 48 so as to have a narrow width W2 smaller than the width W1 of both sides of the damping member 44. [ The narrow portion 50 is narrowed toward the outside of the latching portion 48 from the outside of the damping member 44 so that a seating space is formed. The case 10 may be formed with a pressed portion 52 that is inserted into the outer seating space of the narrow portion 50 and presses the outer side of the holding portion 48 so as to support the side and side edges of the supporting member 42 . When the supporting member 42 is swayed laterally by the lateral flow of the rotating shaft 3 when the motor 2 is driven, the crimping portion 52 has a weak binding force only with the soft crimping portion 48, Tightly restrains and supports the outer surface of the engaging portion 48, so that it is possible to reduce the lateral vibration of the rotary shaft 3 and to prevent noise caused thereby.

 Referring to FIGS. 2, 3 and 7, since the front and rear sides of the housing 4 are closely contacted with each other by using the tight fitting portion 60 provided in the case 10, the flow of the motor 2 can be prevented . The tight contact portion 52 presses the front side and the rear side of the housing 4 in a wedge shape to prevent the forward and backward flows. The tight fitting portion 60 is provided in the mounting groove portion 12 of the case 10 and includes at least one front protruding portion 62 for pressing and supporting the front side of the housing 4, And at least one rear projection portion 64 for pressing and supporting the rear side of the housing 4. It is preferable that the front and rear protrusions 62 and 64 have a V-shaped cross section so as to be narrowed toward the end. The distance between the front protruding portion 62 and the rear protruding portion 64 is formed to be slightly smaller than the length of the housing 4 so that the front surface and the rear surface of the housing 4 are contracted while tightly supporting the housing 4.

In the motor vibration preventing apparatus according to the embodiment of the present invention, the tone of the motor 2 is constant when the motor 2 is driven even when the motor 2 is driven under bad conditions, and the emissive quality dispersion rate is improved by 50% So that it has a remarkable vibration and noise prevention effect.

Therefore, the motor vibration damping device according to the embodiment of the present invention supports the front portion 5 of the motor housing 4 by using the wedge-shaped pressing portion 30, so that the vibration and noise of the motor 2 Can be prevented.

In addition, the present invention can reduce the vibration and noise due to the swinging of the rotary shaft (3) by elastically supporting and restraining the end portion of the rotary shaft (3) by using the constraint holding portion (40).

Further, in the present invention, since the support member (42) for supporting the end portion of the rotary shaft (3) is wrapped by the soft damping member (44), the vibration can be efficiently absorbed.

The present invention also prevents the upward movement of the support member 42 by the release preventing portion 46 provided on the damping member 44 and prevents the support member 42 from being separated from the damping member 44 .

The present invention is also characterized in that the damping member 44 is provided with the latching portion 48 to wrap the both side edges of the support member 42 and to fix the narrow portion 50 formed in the latching portion 48 to the compression bonding portion 52 It is possible to prevent lateral movement of the support member 42.

The front and rear sides of the housing 4 of the motor 2 are supported by the tight fitting portion 60 to prevent vibration and noise caused by the forward and rearward flows of the housing 40. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand.

Accordingly, the true scope of protection of the present invention should be defined by the following claims.

2: Motor 3:
4: housing 5: front protrusion
6: rear side protrusion 7: worm gear
8: Worm wheel 10: Case
12: mounting groove part 14: installation groove part
20: cover 22: fastening member
30: pressing portion 32: fitting groove portion
34: first pressing projection 36: second pressing projection
40: restraining holding portion 42: supporting member
44: damping member 46:
48: latching part 50:
52: pressing part 60:
62: front protruding portion 64: rear protruding portion

Claims (5)

A housing for housing a motor including a housing, a rotating shaft, and front and rear projecting portions;
A pressing portion provided in the case and pressing and supporting the front side projection; And
And a restraining holding part provided in the case and for preventing vibration of the motor by closely supporting the end part of the rotating shaft at one side or both sides thereof
Wherein the motor vibration preventing device comprises:
The method according to claim 1,
The pressing portion
A fitting groove portion into which the front protruding portion is inserted;
A first pressing protrusion protruding from one side surface of the fitting groove and pressing one outer peripheral surface of the front protrusion; And
And a second pressing protrusion protruding from the other side surface of the fitting groove so as to correspond to the first fitting protrusion and pressing the other outer circumferential surface of the axle shaft,
Wherein a distance between the first pressing protrusion and the second pressing protrusion is smaller than an outer diameter of the front protrusion,
Wherein the first and second pressing protrusions are narrowed toward the end to press the front protruding portion in a wedge shape.
The method according to claim 1,
The constraint-
A support member which is held in contact with an end of the rotary shaft; And
And a damping member provided on the mounting groove to absorb the vibration transmitted to the support member via the rotation shaft
The vibration preventing device comprising:
The method of claim 3,
Wherein the damping member is provided with a release preventing portion for preventing the upward movement of the support member,
Wherein the release preventing portion is formed to extend upward from the upper surface of the damping member and extends to the upper surface of the support member inserted into the insertion groove,
Wherein the damping member is inserted into an installation groove portion provided in the case.
5. The method of claim 4,
Wherein the support member is formed with an engaging portion that is disposed on the outer side of the rotation shaft while covering both side edges of the support member so that the support member is slidably inserted into the installation groove,
Wherein the engaging portion is formed with a narrow portion formed to be recessed to have a width smaller than both widths of the damping member,
Wherein the case is formed with a pressing portion that is inserted into an outer side of the narrow portion and presses the outer side of the engaging portion so as to support side and side edges of the supporting member.

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