KR101784430B1 - Assist handle for vehicle - Google Patents

Abstract

The present invention relates to a motorcycle including a mount portion, a handle portion pivotally coupled to the mount portion, a damper portion inserted in the mount portion to provide a damping force to the rotation of the handle portion, and a hinge pin for pivotally connecting the mount portion, Wherein the damper portion provides a damping force by a damping portion inserted between the outer body and the inner body.

Description

ASSIST HANDLE FOR VEHICLE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to an automotive assist handle, and more particularly, to an automotive assist handle having a simple structure and improved operability.

Usually, the head lining at the upper ends of both sides of the inside of the vehicle is provided with an assist handle so that the occupant can maintain the body balance in situations such as sudden start, sudden stop or sudden turn of the vehicle.

In the case of such a vehicle assist handle, the mount portion is fastened on the head lining of the vehicle interior, and the mount portion and the handle portion are pivotally coupled through the hinge pin, so that the handle portion is rotatable according to the intention of the occupant.

More specifically, the vehicle assist handle is resiliently supported through the elastic portion so that the handle portion abuts against the head lining, that is, the folded state, so that the occupant can grasp the handle portion when necessary and rotate the handle portion at a certain angle . Then, when the passenger places the handle portion, the handle portion is restored by the elastic portion, and at the same time, a part of the restoring force is attenuated by the damper portion provided in the automotive assist handle, and is gradually restored.

Such a damper unit performs various functions such as a function of suppressing the occurrence of impact noise or a function of improving the sense of operation of turning the handle portion when the occupant rotates the handle portion, in addition to the function of making the restoration speed constant. .

The damper used in the conventional vehicle assist handle is mainly an oil damper. In the case of such an oil damper, the hermetically sealed working oil is filled between the inner body and the outer body of the damper to control the restoring force of the vehicle assist handle by utilizing the physical damping ability of the operating oil caused by viscous resistance and the like.

However, in the case of such an oil damper, it is necessary to fill a separate operating oil, and the structure of the oil damper must be complicatedly designed in order to maintain the airtightness of the oil, thereby increasing the manufacturing cost of the oil damper. Further, even when the oil damper is required to be maintained for a long period of time by using the oil damper for a long time, it is difficult to replace only the parts requiring replacement due to the complexity of the structure, so that the oil damper itself has to be replaced.

On the other hand, as the problem of such an oil damper has arisen, research and development have been actively conducted on a rubber damper which does not require a separate operating oil and has a simple structure as a whole.

In this regard, Korean Patent Registration No. 10-1416421 (Apr. 2014, 09) (Patent Document 1) discloses a vehicular assist handle in which a hinge end for mounting a hinge pin on both sides of the other mounting plate is formed, A damper having a damper insertion portion formed at one side between the hinge ends and provided so as to penetrate the hinge pin in a state of being inserted into the damper insertion portion and having a damping end protruded on one side and the other side of the outer circumferential surface, And a stopper for damping a bidirectional rotational impact by each damping end.

However, in the case of the damping means of Patent Document 1, since the damping force generated by the dynamic frictional force between the damper and the hinge pin is utilized, the damper and the hinge pin The quality of the damping means is not maintained uniformly and the damping capability is rapidly deteriorated due to the deterioration of the damper due to the frictional heat during use for a certain period of time.

Patent Document 1: Korean Patent Publication No. 10-1416421 (Apr. 2014, 09)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a steering assist for a vehicle which is not only excellent in operability as a compact structure but also easy to maintain.

According to an aspect of the present invention, there is provided a motorcycle including a mount portion, a handle portion pivotally coupled to the mount portion, a damper portion inserted in the mount portion to provide damping force to the rotation of the handle portion, And a hinge pin for pivotally connecting the handle portion and the damper portion, wherein the damper portion includes an outer body, an inner body, and a damping portion, the damping portion being inserted between the outer body and the inner body, And a handle for supporting the vehicle.

According to an embodiment of the present invention, the inner body includes an insertion portion inserted into the outer body, and a rotation preventing protrusion is formed on the outer peripheral surface of the insertion portion along the longitudinal direction thereof .

According to an embodiment of the present invention, a plurality of the rotation preventing protrusions are formed at equal intervals in the circumferential direction along the outer circumferential surface of the insertion portion.

According to an embodiment of the present invention, a radius from the axis forming the center of the damper portion to the maximum point of the anti-rotation protrusion is formed to be larger than the radius from the axis to the inner peripheral surface of the damping portion.

According to an embodiment of the present invention, the radius from the axis to the outer circumferential surface of the insert is formed to be equal to or larger than the radius from the axis to the inner circumferential surface of the attenuation portion.

According to an embodiment of the present invention, an abutment portion and a valley portion are formed on the outer peripheral surface of the damping portion.

According to an embodiment of the present invention, the mountain portion and the valley portion are alternately formed along the longitudinal direction of the damping portion.

According to an embodiment of the present invention, the radius from the axis forming the center of the damper portion to the maximum point of the mountain portion of the damping portion is formed to be larger than the radius from the axis to the inner peripheral surface of the outer body .

According to an embodiment of the present invention, a radius from the axis to a minimum point of a valley of a damping portion is formed to be smaller than a radius from the axis to an inner peripheral surface of the outer body.

According to an embodiment of the present invention, the radius from the axis to the inner circumferential surface of the outer body is a median value between a radius from the axis to a maximum point of the peak of the attenuation portion and a radius from the axis to a minimum point of the valleys of the attenuation portion Wherein a steering assistant for a vehicle is provided.

According to one embodiment of the present invention, since the damper portion of the present invention can be compactly assembled through the outer body, the inner body, and the damping portion, it can be manufactured at a lower cost than conventional oil dampers, It is possible to easily replace the damping portion and reuse it even when replacement is required.

Further, in the damping portion of the present invention, a plurality of crests and valleys are alternately formed, and a damping force is exerted only between the damping portion and the outer body, and a region generating frictional force between the damping portion and the outer body along the axial direction is uniformly The problem of unevenness in quality is not generated and the damping force of the damper as a whole is uniformly maintained. As a result, the operability is improved and the useful life of the damping portion is increased finally.

It should be understood that the effects of the present invention are not limited to the above effects and include all effects that can be deduced from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a perspective view of a vehicle assist handle according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the vehicle assist handle of Fig. 1;
3 is an exploded perspective view of a coupling structure of a mount portion, a damper portion, and a hinge pin according to an embodiment of the present invention.
4 is a perspective view of a mount according to an embodiment of the present invention.
5 is a perspective view of a damper unit according to an embodiment of the present invention.
6 is an exploded perspective view of the damper portion of Fig.
7 is a perspective view of an inner body of a damper unit according to an embodiment of the present invention.
FIG. 8 is a vertical sectional view showing an inner coupling structure of a damper unit according to an embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to 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. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "indirectly connected" . Also, when an element is referred to as "comprising ", it means that it can include other elements, not excluding other elements unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a vehicle assist handle according to an embodiment of the present invention.

1, the vehicle assist handle 10 includes a mount portion 100, a handle portion 200, a damper portion 300, a driving portion 400, and a hinge pin 500.

The mount portion 100 is fixed to the head lining in the vehicle, and serves to support the automotive assist handle 10 as a whole.

The damper unit 300 is inserted into the one mounting portion 100 of the vehicle assist handle 10 and the driving unit 400 is inserted into the other mounting portion 100. [ The driving unit 400 serves to provide a restoring force to the handle unit 200 in a state where the handle unit 200 stands up, that is, in an open state. Although not shown, an elastic member may be formed in the driving unit 400, and preferably, the elastic member may be a coil spring.

The outer shapes of the damper unit 300 and the driving unit 400 may be substantially the same. Therefore, the one-side mounting portion 100 into which the damper portion 300 is inserted and the other mounting portion 100 into which the driving portion 400 is inserted can be manufactured in the same manner, so that the manufacturing process can be simplified as a whole. That is, inter-component compatibility can be improved and the number of necessary parts required for manufacturing the automotive assist handle 10 can be reduced.

After the damper part 300 and the driving part 400 are inserted into the respective mounting parts 100, the mounting part 100 and the handle part 200 are pivotally coupled through the hinge pin 500. [

FIG. 2 is an exploded perspective view of the vehicle assist handle of FIG. 1, and FIG. 3 is an exploded perspective view illustrating a coupling structure of a mount portion, a damper portion, and a hinge pin according to an embodiment of the present invention. Fig. 6 is a perspective view of a mount according to an example.

2 to 4, the mount 100 includes a base 110, a main body 120, a mounting plate 130, a mount pinhole 140, a fixing groove 150, a cover 160 And a cover hole 170. As shown in Fig.

The body 120 extends vertically on the base 110 and has an overall arc or parabolic shape.

A mounting plate 130 is formed at each end of the main body 120. A cover hole 170 is formed in the vicinity of the main body 120 where the mounting plate 130 is formed and a fixing groove 150 is formed in the vicinity of the center of the main body 120.

The cover 160 is rotatably mounted on the cover 160 by an axial protrusion 160 formed on the cover 160. The cover 160 can be rotated about the axis 160, The cover 160 can be assembled with the main body 120 by fixing the protrusion 162 in the fixing groove 150.

A guide groove 131 is formed on the inner surface of the mounting plate 130 so as to cross the mount pinhole 140 in a vertical direction. The guide groove 131 has a function of guiding the damper unit 300 in a vertical direction by inserting the guide protrusion 323 of the damper unit 300 to be described later.

In addition, a seating groove 132 is formed at a side upper end of the mounting plate 130. The seating groove 132 is configured to receive the seating protrusion 324 of the damper unit 300, and a detailed description thereof will be given later.

A mount pinhole 140 into which a hinge pin 500 can be inserted is formed at the center of the mounting plate 130. A mounting portion 141 is formed at the outer side opening of the mount portion pinhole 140.

The hinge pin 500 according to the present invention includes a large diameter portion 510, a small diameter portion 520, and a stepped portion 530. When the hinge pin 500 is inserted into the mounting plate 130, the stepped portion 530 is seated on the seating portion 141 so that the axial movement of the hinge pin 500 is restrained. That is, the diameter of the small diameter portion 520 of the hinge pin 500 is formed to be smaller than the inner diameter of the mount portion pinhole 140, and the diameter of the large diameter portion 510 may be formed larger than the inner diameter of the mount portion pinhole 140 have.

The seating portion 141 may be formed on both sides of the mounting plate 130. Therefore, the assembler can insert the hinge pin 500 into the mount 100 in a direction in which assembly is easy.

The handle portion 200 includes a handle body 210, a receiving space 220, and a handle portion pinhole 230.

The accommodation space 220 functions to accommodate the mount portion 100 into the handle body 210 in a closed state.

The handle portion pinhole 230 is formed at both ends of the handle body 210. When the handle portion pinhole 230 and the mount portion pinhole 140 are aligned coaxially and the hinge pin 500 is inserted and coupled, And serves to receive the pin 500.

One side of the handle portion pinhole 230 may have an inner diameter corresponding to the large diameter portion 510 of the hinge pin 500 and an inner diameter of the other side may be formed to correspond to the small diameter portion 520.

Next, the damper unit 300 according to the present invention will be described with reference to FIGS. 5 and 6. FIG.

FIG. 5 is a perspective view of a damper unit according to an embodiment of the present invention, and FIG. 6 is an exploded perspective view of the damper unit of FIG.

The damper portion 300 includes an outer body 310, an inner body 320, and a damping portion 330.

A semicircular coupling ring 311 extends circumferentially at one end of the outer body 310. The coupling ring 311 is engaged with the coupling protrusion 328 of the inner main body 320 (see FIG. 7), thereby fixing the outer main body 310 to the inner main body 320. More specifically, the coupling ring 311 and the coupling protrusion 328 are engaged with each other by the outer body 310 and the inner body 320 being axially fixed while the outer body 310 and the inner body 320 Is relatively rotatable in the rotating direction. Accordingly, the engagement ring 311 is easily slidable and rotatable on the engagement protrusion 328 as the outer body 310 rotates.

A cut-off portion 312 is formed between both ends of the coupling ring 311. Since the cutout 312 is formed between the coupling rings 311 as described above, the coupling ring 311 is elastically deformed in the lateral direction when the coupling ring 311 is engaged with the coupling protrusion 328, The outer body 310 and the inner body 320 can be easily separated from each other even when the damping portion 330 is replaced during maintenance.

A pressing projection 313 may be formed on the outer peripheral surface 310b of the outer body 310 along the longitudinal direction. The pressing protrusion 313 is engaged with a stopper (not shown) formed in the receiving space 220 of the handle 200 to press the outer main body 310 according to the rotation of the handle 200. That is, due to the engagement of the pressing protrusion 313 and the stopper, the handle portion 200 and the outer main body 310 can be integrally rotated.

The inner body 320 includes an insertion portion 321, a rotation preventing protrusion 322, a guide protrusion 323, a seating protrusion 324, a tapered portion 325, a body hole 326, and a through hole 327 do.

The insertion portion 321 has a configuration in which a damping portion 330 to be described later is inserted and inserted into the inside of the outer main body 310. A plurality of rotation preventing protrusions 321b are formed on the outer circumferential surface 321b of the insertion portion 321, (322) is extended. The rotation preventing protrusions 322 may be formed at regular intervals in the circumferential direction along the outer peripheral surface 321b of the insertion portion 321. [ Therefore, the damping portion 330 coupled to the insertion portion 321 can not be relatively rotated by the rotation preventing protrusion 322 in relation to the inner body 320.

At one end of the inner body 320, a guide protrusion 323 is formed across the through hole 327 in the vertical direction. The guide protrusion 323 is inserted into the guide groove 131 of the mount part 100 to guide the damper part 300 to slide in the vertical direction (see FIGS. 3 and 4).

A seating protrusion 324 is formed on the upper side of the guide protrusion 323 on one side. The mounting projection 324 is formed to be seated in the mounting groove 132 of the mounting portion 100 so that when the damper portion 300 is completely inserted into the mounting portion 100, (See Figs. 3 and 4).

On the other hand, a tapered portion 325 is formed below the guide projection 323 on the other side. The tapered portion 325 allows the damper portion 300 to be more easily guided to the mount portion 100 even if the initial alignment of the damper portion 200 is somewhat deviated during assembly into the mount portion 100.

More specifically, a through hole 327 is formed in the central portion of the inner main body 320 in the longitudinal direction from one end of the inner main body 320 to the other end of the insertion portion 321. The inner diameter of the through hole 327, that is, the inner diameter of the inner circumferential surface 321a of the insertion portion 321 is smaller than the small diameter portion 520 of the hinge pin 500 And the inner diameter of the inner wall. The inner diameter of the inner circumferential surface 321a of the insertion portion 321 is preferably set so that a gap of a predetermined dimension can be formed between the inner circumferential surface 321a of the insertion portion 321 and the small diameter portion 520 of the hinge pin 500, May be formed larger than the inner diameter of the small diameter portion 520 of the hinge pin 500 by a predetermined dimension.

On the other hand, at one end of the inner body 320, a plurality of body holes 326 are formed in the circumferential direction. More preferably, the main body hole 326 may be formed at a position corresponding to the engaging projection 328 (see FIG. 7). Therefore, the assembler can confirm whether the coupling ring 311 of the outer main body 310 and the coupling protrusion 328 of the inner main body 320 are firmly coupled through the main body hole 326, It is possible to easily disassemble the outer body 310 and the inner body 320 by inserting a tool of the inner ring 320 into the body hole 326 and pressing the coupling ring 311. 6, the number of the body holes 326 is not limited to the number of the body holes 326, and may be appropriately formed to correspond to the number of the coupling protrusions 328, if necessary.

The damping portion 330 is configured to be coupled to the inner body 320 and more specifically to the insertion portion 321 of the inner body 320 to finally provide a damping force to the damper portion 300. The damping portion 330 330 are alternately formed along the longitudinal direction on the outer circumferential surface of the base plate 330. [

The damping portion 330 may be made of a silicone rubber material, and more preferably, a silicone rubber material containing or impregnating a separate oil component. It goes without saying that the present invention is not limited to the silicone rubber if it is a material that has flexibility and can provide the damper unit 300 with appropriate damping force due to the physical properties.

7 is a perspective view of an inner body of a damper unit according to an embodiment of the present invention. 7 (a) is a rear perspective view of the inner main body 320 of the damper unit 300, and Fig. 7 (b) is an enlarged sectional view of a portion A of Fig. 7 (a).

The radius R5 from the axis z to the maximum point 322a of the anti-rotation protrusion 322 is greater than the radius R5 from the axis z to the maximum point 322a of the damping portion 330. [ May be formed larger than the radius to the inner circumferential surface 330a. The damping portion 330 is fixed in relation to the inner main body 320 and is able to provide a dynamic frictional force in relation to the inner peripheral surface 310a of the outer main body 310. [ In other words, since the damping portion 330 is firmly fixed to the inner body 320 by the rotation preventing protrusion 322, the damping portion 330 is formed on the inner body 320 when the outer body 310 rotates, The phenomenon is prevented.

The radius R4 from the axis z to the outer peripheral surface 321b of the insertion portion 321 is substantially equal to the radius from the axis z to the inner peripheral surface 330a of the damping portion 330 Or may be formed larger. In this case, the fixing force between the damping portion 330 and the inner main body 320 is further improved to prevent the damping portion 330 from being loosened on the inner main body 320 during rotation of the outer main body 310 do.

Next, with reference to Fig. 8, the mutual coupling relation of the outer main body, the inner main body and the damping portion of the damper unit according to the present invention will be described.

FIG. 8 is a vertical sectional view showing an inner coupling structure of a damper unit according to an embodiment of the present invention. FIG.

The radius R1 from the axis z to the maximum point 331a of the hill 331 of the damping portion 330 is greater than the radius r from the axis z to the inner peripheral surface 310a of the outer body 310 (R2). This structure provides a more reliable damping force between the crest 331 of the damping portion 330 and the inner peripheral surface 310a of the outer main body 310. [

Since the plurality of crests 331 and valleys 332 are formed alternately along the longitudinal direction on the outer peripheral surface of the damping portion 330, the damping portion 330 and the outer body 310 So that the damping force of the entire damper unit 300 can be maintained uniformly.

According to an embodiment of the present invention, the radius R3 from the axis z to the minimum point 332a of the valley portion 332 of the damping portion 330 is greater than the radius R3 of the outer body 310 from the axis z And may be formed to be smaller than the radius R2 to the inner peripheral surface 310a. This structure allows friction with the inner circumferential surface 310a of the outer main body 310 only at the crests 331 of the damping portion 330 so that the entire outer circumferential surface of the damping portion 330 is in contact with the outer main body 310 The deterioration of the damping portion 330 is progressively progressed and the service life of the damping portion 330 is finally increased as compared with the case of rubbing against the inner circumferential surface 310a of the damping portion 310. [

More preferably, the radius R2 from the axis z to the inner circumferential surface 310a of the outer main body 310 is equal to or greater than the radius R2 from the axis z to the maximum point 331a of the hill 331 of the damping portion 330 May be a median value of the radius R3 from the radius R1 and the axis z to the minimum point 332a of the valley portion 332 of the damping portion 330 (R2 = (R1 + R3) / 2}. In this case, the damping portion 330 secures sufficient damping force and service life.

8 shows the shape of the crest portion 331 of the damping portion 330 in the form of an arc, but if the technical idea of the present invention is expressed, the coefficient of friction between the damping portion 330 and the outer body 310 is considered It is needless to say that various shapes such as a rectangle, a trapezoid, a triangle, an ellipse, or a parabolic shape or a combination thereof can be applied.

As described above, according to the embodiment of the present invention, since the damper portion of the present invention can be compactly assembled through the outer body, the inner body, and the damping portion, it can be manufactured at a lower cost than the conventional oil damper In addition, when the damping unit deteriorates due to long-term use and replacement is required, the damping unit can be easily replaced and reused.

In addition, in the damping portion of the present invention, a plurality of crests and valleys are alternately formed, and a damping force is exerted only between the damping portion and the outer body, and a region in which a frictional force is generated between the damping portion and the outer body along the axial direction is distributed evenly Therefore, not only the quality nonuniformity problem as in the conventional rubber damper is caused, but also the damping force of the entire damper unit is uniformly maintained, thereby improving the operability and ultimately increasing the service life of the damping unit.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

10 Vehicle assist handle 100 Mounting part
110 base 120 body
130 Mounting plate 140 Mounting part Pinhole
150 fixing groove 160 cover
170 cover hole 200 handle portion
210 Handle body 220 accommodation space
230 Handle pin hole 300 Damper part
310 outer body 320 inner body
330 attenuator 400 driving unit
500 Hinge pin 510 Large neck
520 Small portion 530 Stepped portion

Claims (10)

And a hinge pin for pivotally connecting the mount portion, the handle portion, and the damper portion. The vehicular assist device includes a mount portion, a handle portion pivotally coupled to the mount portion, a damper portion inserted into the mount portion to provide a damping force to the rotation of the handle portion, In the handle,
Wherein the damper portion includes an outer body, an inner body, and a damping portion, the damping portion being inserted between the outer body and the inner body to provide a damping force,
A coupling ring extending in a circumferential direction at one end of the outer main body, the coupling ring being engaged with a coupling projection formed on the inner main body to fix the outer main body to the inner main body,
Wherein a body hole is formed in one end of the inner body in a circumferential direction, and the body hole is formed at a position corresponding to the engagement protrusion. The method according to claim 1,
Wherein the inner body includes an insertion portion that is inserted into the outer body,
And a rotation preventing protrusion is formed on an outer peripheral surface of the insertion portion along a longitudinal direction. 3. The method of claim 2,
Wherein the plurality of rotation preventing protrusions are formed at equal intervals in the circumferential direction along the outer peripheral surface of the insertion portion. 3. The method of claim 2,
Wherein the radius from the axis forming the center of the damper portion to the maximum point of the anti-rotation protrusion is larger than the radius from the axis to the inner peripheral surface of the damping portion. 5. The method of claim 4,
And the radius from the axis to the outer peripheral surface of the insertion portion is formed to be equal to or larger than a radius from the axis to the inner peripheral surface of the damping portion. The method according to claim 1,
And a crest portion and a valley portion are formed on an outer peripheral surface of the damping portion. The method according to claim 6,
Wherein the crest portion and the valley portion are alternately formed along the longitudinal direction of the damping portion. The method according to claim 6,
Wherein the radius from the axis forming the center of the damper portion to the maximum point of the mountain portion of the damping portion is formed to be larger than the radius from the axis to the inner peripheral surface of the outer body. 9. The method of claim 8,
And the radius from the axis to the minimum point of the trough portion of the damping portion is formed to be smaller than the radius from the axis to the inner peripheral surface of the outer body. 10. The method of claim 9,
Wherein the radius from the axis to the inner circumferential surface of the outer main body is a median value between a radius from the axis to the maximum point of the crest portion of the attenuation portion and a radius from the axis to a minimum point of the crest portion of the attenuation portion.

Images