KR20200057425A - Knob assembly of vehicle multimedia device - Google Patents

Abstract

The present invention relates to a knob assembly of a multimedia device for a vehicle, wherein the front of a knob of a vehicle electronic device does not protrude from a panel. The knob assembly includes: a panel having a through hole formed therein, and having a fixed portion smaller than an inner diameter of the through hole inside the through hole; a knob inner rotatably coupled to the fixing portion; an elastic member elastically coupled between the fixing portion and the knob inner; a steel knob inserted into the outer circumferential surface of the knob inner and rotating with the knob inner; and a knob cover inserted into the through hole to cover the front surface of the knob inner, and fixed to the knob inner to rotate with the knob inner, wherein the steel knob is made of a metal material and is heavier than the knob inner.

Description

Knob assembly of vehicle multimedia equipment {KNOB ASSEMBLY OF VEHICLE MULTIMEDIA DEVICE}

The present invention relates to a knob assembly of a multimedia device for a vehicle, and more particularly, to a knob assembly of a multimedia device for a vehicle in which the front of the knob of the electronic device for the vehicle does not protrude from the panel.

In recent years, with the development of the automobile industry, various types of vehicles with new specifications are supplied to the market every year, and various conveniences that enable drivers to provide a more stable and comfortable driving condition beyond functions as a vehicle for transportation. As a means, function is required.

Therefore, in order to satisfy the needs of consumers, or to improve the competitiveness of products, new technologies that implement various functions are being applied to the inside and outside of the vehicle, and switches, buttons, and display panels related to these functions are existing. In addition to that.

In particular, in order to guarantee not only the driving convenience of the driver but also various functions for comfortable riding and entertainment of the occupant, various types of multimedia devices are arranged in the interior of the vehicle including the dashboard.

In addition, a plurality of knob assemblies for performing various functions are protruded from the multimedia device.

The above-described knob assembly protrudes from the surface of the multimedia device so that the driver and the occupant can easily operate, and the higher the protruding height is, the closer the distance between the driver and the occupant is, so it is convenient for the operator and the occupant to operate.

However, when a part of the body of the driver and the occupant comes into contact with the knob assembly during a collision while driving the vehicle, there is a limitation in increasing the height of the knob assembly because the injury increases due to the knob assembly.

In particular, the regulations of developed countries such as Europe limit the protruding length of the knob assembly to about 9.5 mm, and prevent sharp edges from being generated in the vehicle assembly when a vehicle crashes.

In addition, when the knob assembly protrudes excessively, there is a problem in that the degree of freedom of the appearance of the multimedia device, especially the vehicle interior design, is reduced due to the protruding knob assembly.

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide a knob assembly of a vehicle multimedia device in which a front surface of a knob assembly of a vehicle multimedia device does not protrude from a panel.

A knob assembly of a multimedia device for a vehicle according to an embodiment of the present invention includes a panel having a through hole formed therein and a fixing portion smaller than an inner diameter of the through hole inside the through hole; A knob inner rotatably coupled to the fixing part; An elastic member elastically coupled between the fixing part and the knob inner; A steel knob inserted into an outer circumferential surface of the knob inner and rotating together with the knob inner; And a knob cover inserted into the through hole to cover the front surface of the knob inner and fixed to the knob inner to rotate with the knob inner, wherein the steel knob is made of a metal material and is heavier than the knob inner.

The front surface of the panel and the front surface of the knob cover are in line with each other.

And a bearing disposed between the knob inner and the through hole and between the knob inner and the fixing part.

The bearing includes: a first ball bearing disposed between the upper outer circumferential surface of the knob inner and the through hole; And a second ball bearing disposed between the lower inner circumferential surface of the knob inner and the fixing part.

The first ball bearing and the second ball bearing, the base portion formed in an O-RING shape; A plurality of holder parts formed at a distance from each other along the base part; It is inserted into the holder portion, the ball portion in contact with the knob inner; includes.

The fixing part is formed with a fixing protrusion extending from the lower end toward the outside and an upper surface contacting the lower surface of the second ball bearing.

The knob inner, the lower end and the upper end communicating with each other to form a body portion; A coupling protrusion extending outward from the lower end of the body portion to be engaged with the knob cover; A first support jaw extending in an outer direction along the circumference of the outer circumferential surface of the body, the lower surface supporting the steel knob, and the upper surface contacting the first ball bearing; And a second support jaw formed on an inner circumferential surface of the body portion and having a lower surface in contact with the second ball bearing.

The knob cover, the front portion covering the front of the knob inner; And an extension portion extending upward from the circumference of the front portion so that the upper surface comes into contact with the lower surface of the steel knob, and in the extension portion, an engaging groove into which the engaging projection is inserted is formed at a position corresponding to the engaging projection. .

In the front portion, an operation portion is formed around the outer surface to rotate the knob inner.

The upper surface of the first support jaw is formed to be inclined in the downward direction from the upper direction.

The second support jaw is formed to be inclined in the upward direction from the downward direction.

A PCB substrate accommodated in the panel and formed with various electric circuits; And a sensor unit electrically coupled to the PCB substrate and sensing a rotational position of the knob inner.

The sensor unit is formed in a “U” shape and is a photo sensor in which a light emitting unit is formed in one direction and a light receiving unit is formed in the other direction.

The knob inner, a bent portion which is interconnected in a wave shape along the inner circumferential surface of the body portion and in contact with the outer circumferential surface of the elastic member; A plurality of spaced apart from each other along the upper end of the body portion is inserted between the light-emitting portion and the light-receiving portion, the sensing projection to block the light emitted from the light-emitting portion; further includes.

The elastic member, the contact portion in contact with the bent portion; And an elastic portion that contracts when the convex point of the contact portion is in contact with the convex portion of the bent portion, and elastically relaxes when the convex point of the contact portion is in contact with the concave point of the curved portion.

The knob assembly of the multimedia device for a vehicle according to the present invention is that the front surface of the knob cover is disposed on the same line with the front surface of the panel, so that the knob assembly does not protrude from the front surface of the panel, thereby causing injury to the driver and passengers during collision during vehicle driving. It is possible to reduce the appearance of the display panel, in particular, to increase the degree of freedom in the interior design of the vehicle, and in accordance with laws and regulations on the protruding length of the knobs of developed countries such as Europe, there is an effect that can be easily applied to overseas exports.

In addition, the steel knob is made of a heavier weight than the knob inner, and when rotating the knob inner, has inertia due to centrifugal force, so that the knob inner is easy to rotate, and has an effect that allows a user to have a luxurious feeling.

In addition, when the driver or passenger rotates the knob inner, the elastic member repeats contraction and relaxation according to the rotation position of the knob inner, thereby increasing the rotation sensitivity of the knob inner and easily grasping the rotation position of the knob inner. It has an effect.

In addition, since the first ball bearing and the second ball bearing are respectively disposed in one direction and the other direction of the knob inner, there is an effect that the knob inner can rotate smoothly along the circumference of the fixing part.

In addition, by contacting the other surface of the bearing with one surface of the fixed protrusion, the fixed protrusion has an effect of effectively preventing the bearing from escaping to the outside of the through hole.

In addition, by inserting the engaging projection into the engaging groove, the knob cover can be firmly fixed to the knob inner, and when the driver and the passenger rotate the knob cover, the engaging projection is caught in the engaging groove and can rotate the knob inner together. It works.

In addition, the other surface of the first support jaw supports the steel knob inserted into the outer circumferential surface of the knob inner, and one surface contacts the first ball bearing disposed between the outer circumferential surface of the knob inner in one direction and the through hole, so that the first support jaw has a steel knob. There is an effect of preventing excessive insertion of the knob inner in one direction and effectively preventing the first ball bearing from escaping in the other direction of the knob inner.

In addition, one direction in the horizontal direction of the first ball bearing is in contact with the wall surface of the through hole, one direction in the vertical direction of the first ball bearing is in contact with the bottom surface of the through hole, and the first support is in the upper-right corner of the other direction in the horizontal direction of the first ball bearing. By contacting one side of the jaw, the first support jaw has an effect capable of firmly fixing the first ball bearing swinging in the other direction and the right direction.

In addition, since the other surface of the second support jaw is in contact with the second ball bearing, the second support jaw has an effect of preventing the second ball bearing from being excessively inserted in one direction of the knob inner.

In addition, the right and upper portions of the second ball bearing contact the wall surface of the fixing part and one surface of the fixing protrusion, respectively, and the other surface of the second support jaw contacts the lower left side of the second ball bearing, so that the second ball bearing has a second ball bearing in one direction. And it is possible to firmly fix the shaking in the other direction.

In addition, since the operation portion is formed around the outer surface of the front portion, when the driver and the occupant press the front portion using fingers, there is an effect of preventing the finger from sliding from the front portion.

1 is a perspective view showing a knob assembly of a multimedia device for a vehicle according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of an exploded knob assembly of a vehicle multimedia device according to an embodiment of the present invention.
Figure 3 is a cross-sectional view taken along line A-A 'shown in Figure 1;
4A and 4B are exploded perspective and front views showing a knob inner and an elastic member of a knob assembly of a vehicle multimedia device according to an embodiment of the present invention.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only the embodiments allow the disclosure of the present invention to be complete, and the ordinary knowledge in the technical field to which the present invention pertains. It is provided to fully inform the holder of the scope of the invention, and the invention is defined by the claims. Meanwhile, the terms used in the present specification are for explaining the embodiments and are not intended to limit the present invention. In the present specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, "comprises" or "comprising" means the presence of one or more other components, steps, operations and / or elements other than the components, steps, operations and / or elements mentioned, or Addition is not excluded.

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

1 is a perspective view showing a knob assembly of a vehicle multimedia device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of an exploded knob assembly of a vehicle multimedia device according to an embodiment of the present invention, and FIG. It is a cross-sectional view taken along the line A-A 'shown in Figure 1, Figure 4a and Figure 4b is an exploded perspective view and a front view showing a knob inner and an elastic member of the knob assembly of a vehicle multimedia device according to an embodiment of the present invention.

1 to 4A and 4B, the knob assembly of the vehicle multimedia device according to the present embodiment includes a panel 100, a bearing 200, a knob inner 300, an elastic member 400, and a steel knob ( 500) and a knob cover and a PCB (PRINTED CIRCUIT BOARD) substrate 700 and a sensor unit 800.

Here, the multimedia device for the vehicle is arranged in the interior of the vehicle including the dashboard, in order to guarantee not only the driving convenience of the driver but also various functions for comfortable riding and entertainment of the occupant, and increases visibility and operability of the driver or occupant. In order to do this, it is equipped with an LCD (LIQUID CRYSTAL DISPLAY) inside the display panel.For example, a knob (KNOB) used to adjust the volume (VOLUME) of an AVN device (AUDIO VIDEO NAVIGATION SYSTEM) such as a car audio or CD player, for example I will explain.

The panel 100 is a housing of an AVN device disposed in a vehicle interior, and in the present invention, refers to a surface arranged to face a driver or a passenger in the housing of the AVN device.

The panel 100 is formed with a through hole 110 so that various components such as a knob inner 300, an elastic member 400, a bearing 200, a steel knob 500, etc. can be inserted on the front surface.

The through hole 110 is preferably made of a circular shape.

In addition, the fixing part 120 is formed inside the through hole 110.

The fixing part 120 is preferably formed in a cylindrical shape, and is formed to have a size smaller than the inner diameter of the through hole 110, and is formed to have a length that does not protrude to the outside from the through hole 110.

In addition, the fixing part 120 is fixed through various configurations such as a knob inner 300 inserted through the through hole 110, an elastic member 400, a bearing 200, a steel knob 500, etc. It is prevented from escaping to the outside through the through hole 110.

To this end, the fixing part 120 is formed with a fixing protrusion 121 at a lower end in a direction in which the through hole 110 is formed.

The fixing protrusions 121 are made of a plurality, and are formed to be spaced apart from each other along the circumference at the lower end of the fixing portion 120, and extend in the outer direction.

Then, the fixing protrusion 121 is in contact with the lower surface of the bearing 200 inserted through the through-hole 110 on the upper surface.

Due to this, the fixing protrusion 121 can effectively prevent the bearing 200 inserted through the through hole 110 from escaping to the outside of the panel 100 through the through hole 110.

The bearing 200 is disposed between the knob inner 300 and the through hole 110 and between the knob inner 300 and the fixing part 120.

And, the bearing 200 is preferably made of a ball bearing 200, and is inserted through the through-hole 110 and the knob inner 300 fixed to the fixing part 120 along the circumference of the fixing part 120 Allow it to rotate smoothly.

The bearing 200 includes a first ball bearing 210 and a second ball bearing 220.

The first ball bearing 210 is disposed between the upper outer circumferential surface of the knob inner 300 and the through hole 110, and the second ball bearing 220 is between the lower inner circumferential surface of the knob inner 300 and the fixing part 120. Is placed on.

The first ball bearing 210 and the second ball bearing 220 are respectively disposed in the upper direction and the lower direction of the knob inner 300, thereby supporting the upper and lower portions of the knob inner 300, respectively, so that the knob inner 300 It can be rotated smoothly along the circumference of the fixing portion 120.

The knob inner 300 is formed in a cylindrical shape, and is inserted through the through hole 110 to be rotatably coupled to the fixing part 120.

The knob inner 300 includes a body portion 310, a coupling protrusion 320, a first support jaw 330, a second support jaw 340, a bent portion 350, and a sensing protrusion 360.

The body portion 310 is formed in a cylindrical shape in which the lower end and the upper end are in communication with each other, and forms the body of the knob inner 300.

The engaging projection 320 is formed of a plurality of engaging projection 320 is spaced apart from each other at a distance along the circumference from the lower end of the body portion 310, is extended in the outward direction.

And the engaging projection 320 is coupled with the knob cover 600 inserted through the through hole 110.

Due to this, the coupling protrusion 320 can effectively prevent the knob cover 600 inserted through the through-hole 110 from escaping to the outside of the through-hole 110.

The first support jaw 330 extends outward along the circumference of the outer circumferential surface of the body portion 310, and the lower surface supports the steel knob 500 inserted into the outer circumferential surface of the knob inner 300, and the upper surface is a knob inner ( 300) is in contact with the first ball bearing 210 disposed between the outer peripheral surface and the through hole (110).

Due to this, the first support jaw 330 prevents the steel knob 500 from being excessively inserted in the upward direction of the knob inner 300, and the first ball bearing 210 moves downward in the downward direction of the knob inner 300. It can effectively prevent a departure.

On the other hand, the upper surface of the first support jaw 330 is formed to be inclined in the downward direction from the upper direction on the outer peripheral surface of the body portion 310.

In addition, the left and upper portions of the first ball bearing 210 based on the first ball bearing 210 disposed on the left side in FIG. 3 contact the wall surface and the upper surface of the through hole 110, respectively, and the right side of the first ball bearing 210 The lower end contacts the upper surface of the first support jaw 330.

Due to this, the first support jaw 330 can firmly fix the first ball bearing 210 to shake in the lower direction and the right direction.

The first support jaw 330 and the first ball bearing 210 disposed on the right side in FIG. 3 also have the same configuration and effect as the first support jaw 330 and the first ball bearing 210 disposed on the left side. Detailed descriptions are omitted so as not to obscure the subject matter.

The second support jaw 340 is formed as a lower portion on the inner circumferential surface of the body portion 310, and the upper surface is in contact with the second ball bearing 220 inserted through the through hole 110.

Due to this, the second support jaw 340 can prevent the second ball bearing 220 from being excessively inserted in the upper direction of the knob inner 300.

On the other hand, the inner peripheral surface of the body portion 310 of the second support jaw 340 is formed to be inclined from the lower direction to the upper direction.

In addition, the right and lower portions of the second ball bearing 220 based on the second ball bearing 220 disposed on the left side in FIG. 3 contact the wall surface of the fixing part 120 and the upper surface of the fixing protrusion 121, respectively. The upper left of the ball bearing 220 is in contact with the lower surface of the second support jaw 340.

Due to this, the second support jaw 340 can firmly fix the second ball bearing 220 to swing in the upper direction and the left direction.

The second support jaw 340 and the second ball bearing 220 disposed on the right in FIG. 3 also have the same configuration and effect as the second support jaw 340 and the second ball bearing 220 disposed on the side. Detailed descriptions are omitted so as not to obscure the subject matter.

On the other hand, the first ball bearing 210 and the second ball bearing 220 is composed of a base portion (211, 221), the holder portion (212, 222) and the ball portion (213, 223).

The base portions 211 and 212 are formed in an O-ring shape, so that the base portion 211 of the first ball bearing 210 is inserted into the outer circumferential surface of the knob inner 300 and the base portion 221 of the second ball bearing 220 ) Are respectively inserted into the outer circumferential surface of the fixing part 120.

A plurality of holder portions 212 and 222 are formed along the base portions 211 and 221 and spaced apart from each other.

The ball portions 213 and 223 are inserted into the holder portions 212 and 222, respectively.

The ball portions 213 and 223 are inserted into the holder portions 212 and 222, respectively, and the ball portions 213 of the first ball bearing 210 are provided on the outer circumferential surface of the knob inner 300 and the wall surface of the through hole 110. The ball portion 223 of the second ball bearing 220 is in contact with the fixing portion 120 and the inner circumferential surface of the knob inner 300.

Particularly, a portion of the outer circumferential surfaces of the ball portions 213 and 223 is exposed from the holder portions 212 and 222, so that the knob inner 300, the through hole 110, and the fixing portion 120 can be easily contacted, respectively.

The bent portion 350 is formed in the upper direction of the second support jaw 340 on the inner circumferential surface of the body portion 310 and is interconnected in a wave shape along the inner circumferential surface of the body portion 310.

And the bent portion 350 is in contact with the outer peripheral surface of the elastic member 400.

The sensing projections 360 are formed by being spaced apart from each other along the upper end of the body portion 310, and are inserted into the sensor unit 800 to be described later.

The elastic member 400 is formed in a closed loop shape, and is inserted through the through hole 110 to be elastically coupled between the fixing part 120 and the knob inner 300.

In addition, the outer circumferential surface of the elastic member 400 is in contact with the inner circumferential surface of the valley of the knob inner 300.

The elastic member 400 includes a contact portion 410 and an elastic portion 420.

The contact portion 410 is in contact with the bent portion 350.

The elastic part 420 is formed by being spaced apart from each other by a distance between the contact parts 410, and as shown in FIGS. 4A and 4B, the convex point 411 of the contact part 410 of the bent part 350 When the convex point 351 is in contact with each other, it contracts, and when the convex point 411 of the contact portion 410 is in contact with the concave point 352 of the bent portion 350, it is elastically relaxed.

Due to this, the elastic member 400, the operator or the passenger rotates the knob inner 300, the elastic member 400 according to the rotational position of the knob inner 300 by repeating the contraction and relaxation of the knob inner 300 The rotation sensitivity is increased, and the rotation position of the knob inner 300 can be easily grasped.

The steel knob 500 is formed in a cylindrical shape, and is inserted through the through hole 110 and inserted into the outer circumferential surface of the knob inner 300.

And the upper surface of the steel knob 500 is in contact with the lower surface of the first support jaw 330.

Due to this, the steel knob 500 can be firmly supported on the first support jaw 330.

On the other hand, the steel knob 500 is made of a material heavier than the knob inner 300.

Therefore, the steel knob 500 is preferably made of a metal material of a heavier weight than the knob inner (300).

In addition, the steel knob 500 is made of a metal material, so that the knob inner 300 may be made of the same material as a lightweight plastic that is relatively lighter than the steel knob 500.

Due to this, the steel knob 500 is made of a heavier weight than the knob inner 300, and when rotating the knob inner 300, it has inertia due to centrifugal force, so that the knob inner 300 is easy to rotate and allows the user You can make it feel luxurious.

The knob cover 600 has one surface closed and the other surface open, and is inserted through the through hole 110 so that one surface covers the front surface of the knob inner 300 and is fixed to the knob inner 300.

The front surface of the knob cover 600 is disposed on the same line as the front surface of the panel 100.

That is, the knob cover 600 does not protrude from the front surface of the panel 100, thereby reducing injury to drivers and passengers during a collision while driving a vehicle, and enhances the appearance of a multimedia device, particularly the freedom of vehicle interior design. You can.

In addition, by complying with laws and regulations on the protruding length of knobs in developed countries such as Europe, it can easily act on overseas exports.

The knob cover 600 includes a front part 610 and an extension part 620.

The front part 610 covers the front surface of the knob inner 300, and the driver and the passenger press the front part 610 to rotate the knob inner 300 through the pressing force.

The outer surface of the front portion 610 is disposed on the same line as the front surface of the panel 100 as described above.

Therefore, the operation portion 611 is formed on the outer surface of the front portion 610.

The operation portion 611 is formed around the outer surface of the front portion 610, preferably formed radially along the outer surface circumference of the front portion 610.

That is, when the driver and the passenger press the front portion 610 of the knob cover 600 using a finger, it is possible to prevent the finger from sliding from the front portion 610.

Due to this, the operation unit 611 can clearly rotate the knob inner 300.

On the other hand, in the drawing, although the operation unit 611 is shown as being formed radially along the outer circumference of the front unit 610, the fingers of the driver and the passenger are prevented from sliding from the front unit 610, and the knob inner 300 If can be clearly rotated, the operation unit 611 may be formed in various shapes, such as a concave groove in a circular shape around the outer surface of the front portion 610.

The extended portion 620 extends upward from the circumference of the front portion 610 so that the upper surface is in contact with the lower surface of the steel knob 500, and the inner circumferential surface of the extended portion 620 is in contact with the outer circumferential surface of the lower end of the knob inner 300. .

Then, the extension portion 620 is coupled by the engaging projection 320 of the knob inner 300.

To this end, an engaging groove 621 is formed in the extension 620.

The engaging groove 621 is formed at a position corresponding to the engaging projection 320 in the extension portion 620.

That is, the coupling groove 621, when the knob cover 600 is coupled to the knob inner 300, by inserting the engaging projection 320, it is possible to firmly and secure the knob cover 600 to the knob inner 300. have.

In addition, when the engaging projection 320 of the knob inner 300 is inserted into the engaging groove 621 of the knob cover 600, when the driver and the passenger rotate the knob cover 600, the engaging projection 320 is engaged It can be caught in the groove 621 to rotate the knob inner 300 together.

The PCB substrate 700 is accommodated inside the panel 100, and various electrical circuits are formed.

The PCB substrate 700 drives the multimedia device according to the operation of the knob of the driver and the passenger.

The sensor unit 800 is electrically coupled to the PCB substrate 700 and senses the rotational position of the knob inner 300.

In addition, the sensor unit 800 may be formed in a “U” shape to form a light emitting unit in one direction and a topo sensor formed in a light receiving unit in the other direction.

In addition, a plurality of sensing protrusions 360 formed by being spaced apart from each other along the upper end of the knob inner 300 are inserted between the light-emitting portion and the light-receiving portion of the sensor portion 800 formed in a “U” shape.

For this reason, when the knob inner 300 rotates, the sensor unit 800 can detect the rotation angle and rotational position by blocking the light generated from the light emitting unit by the sensing projection 360 before contacting the light receiving unit. have.

As described above, the knob assembly of the multimedia device for a vehicle of the present invention has the front surface of the knob cover 600 disposed on the same line with the front surface of the panel 100 so that the knob assembly does not protrude from the front surface of the panel 100. It can reduce the risk of injury to drivers and passengers during a collision while driving a vehicle, increase the degree of freedom of the exterior of a multimedia device, especially the interior design of a vehicle, and export it overseas in compliance with laws and regulations on the knob protrusion length of developed countries such as Europe. Edo can easily work.

And, the steel knob 500 is made of a heavier weight than the knob inner 300, and when the knob inner 300 is rotated, it has inertia due to centrifugal force, so that the knob inner 300 is easy to rotate and allows the user You can make it feel luxurious.

In addition, the elastic member 400 rotates the knob inner 300 by repeating contraction and relaxation of the elastic member 400 according to the rotation position of the knob inner 300 when a driver or a passenger rotates the knob inner 300. It is possible to increase the sensitivity and easily grasp the rotational position of the knob inner 300.

In addition, the first ball bearing 210 and the second ball bearing 220 are disposed in the upper and lower directions of the knob inner 300, respectively, so that the knob inner 300 rotates smoothly along the circumference of the fixing part 120. You can.

And, by contacting the lower surface of the bearing 200 on the upper surface of the fixed protrusion 121, the fixed protrusion 121 can effectively prevent the bearing 200 from being separated from the outside of the through hole 110.

In addition, by inserting the engaging projection 320 into the engaging groove 621, it is possible to firmly and secure the knob cover 600 to the knob inner 300, when the driver and the passenger rotates the knob cover 600, The engaging projection 320 is caught in the engaging groove 621 to rotate the knob inner 300 together.

In addition, the lower surface of the first support jaw 330 supports the steel knob 500 inserted in the outer circumferential surface of the knob inner 300, and the upper surface is disposed between the upper outer circumferential surface of the knob inner 300 and the through hole 110. By contacting the first ball bearing 210, the first support jaw 330 prevents the steel knob 500 from being excessively inserted in the upper direction of the knob inner 300, and the first ball bearing 210 is the knob inner It is possible to effectively prevent the separation in the downward direction of (300).

In addition, the left and upper portions of the first ball bearing 210 are in contact with the wall surface and the upper surface of the through hole 110, respectively, and the lower right side of the first ball bearing 210 is in contact with the upper surface of the first support jaw 330. The 1 support jaw 330 can firmly fix the first ball bearing 210 to shake in the lower direction and the right direction.

In addition, when the lower surface of the second support jaw 340 is in contact with the second ball bearing 220, the second support jaw 340 is the second ball bearing 220 is excessively inserted in the upper direction of the knob inner 300 Can be prevented.

In addition, the right and lower portions of the second ball bearing 220 are respectively in contact with the wall surface of the fixing portion 120 and the upper surface of the fixing protrusion 121, and the upper left of the second ball bearing 220 is of the second support jaw 340. By contacting the lower surface, the second support jaw 340 can firmly fix the second ball bearing 220 to shake in the upper direction and the left direction.

And, by the operation portion 611 is formed around the outer surface of the front portion 610, when the driver and the passenger presses the front portion 610 using a finger, it prevents the finger from sliding from the front portion 610 can do.

The present invention is not limited to the above-described embodiment, and can be implemented by variously changing within the range within which the technical idea of the present invention is permitted.

100: panel 110: through hole
120: fixing portion 121: fixing projection
200: bearing 210: first ball bearing
220: second ball bearing 211, 221: base portion
212, 222: holder portion 213, 223: ball portion
00: knob inner 310: body
320: engaging projection 330: the first support jaw
340: second support jaw 350: bend
351: convex point 352: concave point
360: sensing projection 400: elastic member
410: contact 411: convex point
420: elastic portion 500: steel knob
600: knob cover 610: front
611: operation unit 620: extension
621: coupling groove 700: PCB substrate
800: sensor unit

Claims (15)

A panel in which a through hole is formed and a fixing portion smaller than an inner diameter of the through hole is formed in the through hole;
A knob inner rotatably coupled to the fixing part;
An elastic member elastically coupled between the fixing part and the knob inner;
A steel knob inserted into an outer circumferential surface of the knob inner and rotating together with the knob inner; And
It includes a knob cover which is inserted into the through hole, covers the front surface of the knob inner and is fixed to the knob inner and rotates with the knob inner.
The steel knob is made of a metal material and is heavier than the knob inner.
In-vehicle multimedia device knob assembly.
According to claim 1,
The front surface of the panel and the front surface of the knob cover are in line with each other.
In-vehicle multimedia device knob assembly.
According to claim 1,
And a bearing disposed between the knob inner and the through hole and between the knob inner and the fixing part.
In-vehicle multimedia device knob assembly.
The bearing of claim 3,
A first ball bearing disposed between the upper outer circumferential surface of the knob inner and the through hole; And
It includes; a second ball bearing disposed between the lower inner peripheral surface of the knob inner and the fixing portion
In-vehicle multimedia device knob assembly.
According to claim 4, The first ball bearing and the second ball bearing,
A base portion formed in an O-RING shape;
A plurality of holder parts formed at a distance from each other along the base part;
Included in the ball portion is inserted into the holder portion in contact with the knob inner;
In-vehicle multimedia device knob assembly.
According to claim 4, The fixing portion,
Fixed protrusions extending from the lower part toward the outside and the upper surface contacting the lower surface of the second ball bearing are formed.
In-vehicle multimedia device knob assembly.
According to claim 4, The knob inner,
A body part in which the lower end and the upper end communicate with each other and form a body;
A coupling protrusion extending outward from the lower end of the body portion to be engaged with the knob cover;
A first support jaw extending in an outer direction along the circumference of the outer circumferential surface of the body, the lower surface supporting the steel knob, and the upper surface contacting the first ball bearing; And
It is formed on the inner circumferential surface of the body portion includes a second support jaw contacting the second ball bearing;
In-vehicle multimedia device knob assembly.
The method of claim 7, wherein the knob cover,
A front part covering the front surface of the knob inner; And
It includes; extending from the circumference of the front portion in an upward direction, the upper surface is in contact with the lower surface of the steel knob;
In the extension,
A coupling groove into which the coupling protrusion is inserted is formed at a position corresponding to the coupling protrusion
In-vehicle multimedia device knob assembly.
The method of claim 8, wherein the front portion,
It is formed around the outer surface to form an operation portion for rotating the knob inner
In-vehicle multimedia device knob assembly.
According to claim 7, The upper surface of the first support jaw,
Formed obliquely from top to bottom
In-vehicle multimedia device knob assembly.
The method of claim 7, wherein the second support jaw,
Inclined from downward to upward
In-vehicle multimedia device knob assembly.
According to claim 1,
A PCB substrate accommodated in the panel and formed with various electric circuits; And
Further comprising; a sensor unit that is electrically coupled to the PCB substrate, and detects the rotational position of the knob inner
In-vehicle multimedia device knob assembly.
The method of claim 12, wherein the sensor unit,
It is formed in a “U” shape, and is a photo sensor in which light-emitting parts are formed in one direction and light-receiving parts are formed in the other direction.
In-vehicle multimedia device knob assembly.
The method of claim 12, wherein the knob inner,
A bent portion connected to each other in a wave shape along the inner circumferential surface of the body portion and in contact with the outer circumferential surface of the elastic member;
A plurality of spaced apart from each other along the upper end of the body portion is inserted between the light-emitting portion and the light-receiving portion, the sensing projection for blocking the light emitted from the light-emitting portion; further comprising
In-vehicle multimedia device knob assembly.
15. The method of claim 14, The elastic member,
A contact portion in contact with the bent portion; And
Including an elastic portion that contracts when the convex point of the contact portion is in contact with the convex portion of the bent portion, and elastically relaxes when the convex point of the contact portion is in contact with the concave point of the curved portion.
In-vehicle multimedia device knob assembly.

Images