KR102482926B1 - Automotive switch with damping function - Google Patents

Abstract

The present invention relates to an automotive switch with a damping function which can effectively attenuate vibration through a damping member installed between the fixed and movable mechanisms when vibration occurs and which can attenuate vibration evenly at all times regardless of longitudinal or lateral vibration in the haptic responsive switch structure which generates vibration when the user touches the input and provides vibration feedback to the user. The automotive switch with a damping function according to the present invention comprises: a knob on which the user performs touch manipulation; a touch board which recognizes a user's touch operation applied to the knob; a holder disposed below a touch substrate; a case in which the holder is accommodated and which is coupled to the knob; a vibration actuator mounted on the lower surface of the holder to provide vibration feedback according to a user's touch input by vibrating the holder in a longitudinal or transverse direction, wherein one or more bosses are formed to protrude downward on the lower surface of the holder, and a damper member, which is coupled to the outer peripheral surface of the bosses to space the holder and the case at a certain interval and which attenuates longitudinal or transverse vibration of the holder when the vibration actuator operates, is assembled on the bottom surface of the case.

Description

Automotive switch with damping function {Automotive switch with damping function}

The present invention relates to a vehicle switch capable of executing a desired function through a user's touch input, and more particularly, to a user's touch

In the haptic responsive switch structure that generates vibration upon input and transmits it to the user's finger, when vibration is generated from the vibration element, the vibration can be effectively damped through a damping member installed between the fixed-side and movable-side mechanism, and can be operated when vibration occurs A switch for a vehicle having a damping function capable of uniformly damping vibration regardless of longitudinal or transverse vibration by allowing the entire side mechanism to flow.

Switch devices are used as input devices for function selection and manipulation in various devices such as vehicles, machine tools, terminals, multimedia devices, and game machines. These switch devices are being researched and developed in various forms for various functional selection of devices, and recently, as the objects manipulated by the switch devices require complex and various functions, the switch devices also have complex hierarchical operation functions. It is a situation in which various functions are required for selection.

Recently, many complex switch devices capable of manipulating various functions through a single switch have been developed. Such a complex switch device inputs a desired function execution command through rotation, push, or scroll manipulation, and uses the input signal to the user. Recognizes the intended operation or operation and outputs an execution command.

A major concern in the multifunctional composite switch device-related field is miniaturization, high functionality, and high performance of the device. As part of this, attempts have been made to implement a switch device more compactly through efficient arrangement of parts, and haptic technology, which provides a feedback vibration corresponding to a user's input manipulation to feel a sense of manipulation, is sometimes applied.

As an example, Korean Patent Registration No. 10-1968944 (2019.04.09) discloses a switch device including a haptic function that generates a vibration force corresponding to a user input load (push operation force) and provides feedback through the user's tactile sense. there is. The switch device disclosed in the patent document applies a hinge structure actuator between the knob side and the switch unit recognizing the push operation, thereby increasing the detection margin according to the push operation, minimizing the operation stroke, and providing a haptic function associated with the push operation It is structured to provide feedback to the user with a clearer sense of switch operation.

However, in the switch device including the haptic function as described above, when a push input is applied to the knob, the holder is pushed through the up and down linear motion of the knob, and when pressure is applied to the movable contact point as the tip pivots, the movable body of the vibration motor at the bottom It moves up and down through the shaft to generate vibration, and the damper provided at the bottom of the vibration motor attenuates the vibration and feeds back the operating feeling to the knob. Although the vibration generated by the vibration motor installed between the vibration motors can be suppressed by absorbing and mitigating to some extent, mechanical noise due to collision between the knob holder, which is a movable body, and the case, which is a fixed body, cannot be effectively suppressed when vibration is generated. In addition, the damper installed in the existing switch device can exert a vibration damping effect to some extent when applied to a small switch device, but when applied to a large switch device that provides vibration feedback in a large area, the vibration damping effect is insignificant, In addition, the existing damper structure can effectively dampen vibration transmitted from various directions because it can exhibit a certain degree of damping effect in the vertical direction (vertical direction) but not in the horizontal direction (left and right direction). I had a problem with not being able to.

In addition, in the case of a conventional switch device mounted on a vehicle steering wheel, since it must be mounted within a limited space of a vehicle steering wheel, many restrictions are imposed in terms of design. That is, in a conventional multi-switch device mounted on a vehicle steering wheel, each push switch (button) operated by a push operation occupies a certain switch area and is separated from each other through a boundary line and mounted, so each push switch Due to the switch area occupied by , it is very difficult in terms of design to arrange several push switches in a limited space. In addition, since each switch has a structure in which only one function (push or scroll) is given and operated, there is a problem that it is virtually impossible to assign various functions to one switch, and a push switch or a scroll switch is Since only one feeling according to each push or scroll operation is independently given, there is a problem in that it is virtually impossible to change the once set feeling.

Republic of Korea Patent Registration No. 10-1968944 (2019.04.09)

The present invention has been made to solve the above problems, and the technical problem to be solved in the present invention is a floating structure that separates the movable body from the fixed body through a damper member installed between the fixed body and the movable body inside the switch It is possible to suppress noise due to mechanical interference between the movable body and the fixed body, and effectively dampen longitudinal or transverse vibration transmitted to the movable body through the vibration source through the damper member, and the damping structure A vehicle switch with a damping function that allows the entire movable body to flow by the vibration transmitted from the vibration source by simplifying it, uniformly attenuating the vibration over the entire movable body area, and generating uniform vibration to provide vibration feedback to the user. is to provide

Another technical problem to be solved by the present invention is to create each operation feeling according to push and scroll operation in a multi-function multi-switch device mounted on a vehicle steering wheel through different vibration waveforms generated from an internal vibration actuator, An object of the present invention is to provide a vehicle switch having a damping function in which an electrostatic touch substrate and a pressure sensor are applied in combination to sense an intended push or scroll operation.

A switch for a vehicle having a damping function of the present invention for solving the above technical problem includes a knob through which a user's touch manipulation is performed; a touch substrate for recognizing a user's touch manipulation applied to the knob; a holder disposed below the touch substrate; a case in which the holder is accommodated and coupled to the knob; A vibration actuator mounted on the lower surface of the holder to provide vibration feedback according to a user's touch input by vibrating the holder in a longitudinal or transverse direction, wherein one or more bosses protrude downward from the lower surface of the holder A damper member coupled to the outer circumferential surface of the boss is formed on the bottom surface of the case to attenuate longitudinal or transverse vibration of the holder when the vibration actuator operates while spacing the holder and the case at regular intervals. characterized in that it is assembled.

Here, the vehicle switch having a damping function of the present invention includes a washer supporting a damper member coupled to an outer circumferential surface of the boss from a lower portion; A screw fastening the washer to the lower surface of the boss may be included, but the upper side of the damper member may contact the lower surface of the holder and the lower side may contact the upper surface of the washer.

In addition, one or more buffer protrusions contacting the lower surface of the holder and the upper surface of the washer may be formed on the upper and lower surfaces of the damper member, respectively.

In this case, a plurality of the buffer protrusions may be arranged on the upper and lower surfaces of the damper member at regular intervals in the circumferential direction.

In this case, the buffer protrusions respectively formed on the upper and lower surfaces of the damper member may be arranged on the same line in the longitudinal direction.

In this case, the shape and number of the shock absorber protrusions may be set differently according to the vibration frequency of the vibration actuator.

Meanwhile, the damper member may have a central hollow hole into which the boss is fitted, and may have a stepped undercut portion formed on an outer circumferential surface thereof to be fitted into a mounting hole formed on a bottom surface of the case.

In addition, an escape hole having a diameter smaller than that of the mounting hole and partially communicating with the mounting hole may be formed in a portion adjacent to the mounting hole of the case.

In this case, a stepped portion may be formed on upper and lower circumferences of the mounting hole, and an undercut portion of the damper member may be assembled to the stepped portion around the mounting hole.

In addition, the external shape of the boss and the inner shape of the hollow hole may be formed in a polygonal structure.

According to the vehicle switch structure having a damping function according to the present invention, the damper member is coupled to the mounting hole portion formed on the bottom surface of the case, and the boss of the holder is inserted into the hollow hole portion of the damper member and seated therein, thereby making the movable chain holder a damper Since the floating structure is formed at a certain distance from the case, which is a fixed body, to the upper side through a member, it is possible to effectively attenuate longitudinal or transverse vibration transmitted through the holder when the vibration actuator operates, and when vibration occurs, the holder There is an advantage in that noise generation can be minimized by suppressing a collision between the and the case.

In addition, damping protrusions are formed on the upper and lower surfaces of the damper member, so that when vibration occurs, longitudinal or transverse vibrations can be effectively absorbed and buffered through elastic deformation of the upper and lower buffer protrusions in the longitudinal or transverse direction, There is an advantage in implementing an effective vibration damping effect even for vibration transmitted in the longitudinal or transverse direction.

In addition, when assembling the damper member to the mounting hole portion formed on the bottom surface of the case, assembly is improved by a simple operation of inserting the undercut portion formed on the outer circumferential surface of the damper member into the mounting hole portion, thereby improving the assemblability of the damper member. In the state in which the member is assembled in the mounting hole, the undercut portion engages with the upper and lower stepped portions formed around the mounting hole to suppress lateral movement, thereby exhibiting an effective vibration damping effect even for vibration transmitted in the lateral direction.

In addition, when several damper members having the same structure are arranged and installed at predetermined intervals between the fixed case and the movable holder, a uniform vibration damping effect is obtained over the entire area of the holder through a plurality of damper members installed in various places. Accordingly, the vibration feedback is uniformly applied to the knob portion having a large area, so that vibration feedback can be effectively provided not only to a small switch but also to a large switch having a wide touch area.

In addition, as the damper member is formed in a buffer structure that is vertically symmetrical around the undercut portion, it is possible to simultaneously dampen vibrations between upper and lower objects located above and below using a single damper member. Accordingly, Since there is no need to individually install the damper members on the upper and lower portions of the bottom surface of the case, the number of parts to be assembled can be reduced, thereby reducing the cost of the product.

In addition, if the shape and number of buffer protrusions formed on the upper and lower surfaces of the damper member are appropriately adjusted and designed according to the vibration frequency specifications of the vibration actuator installed in the switch device, a damping function suitable for switch models having various vibration frequencies can be implemented. There are advantages to being able to.

In addition, the knob part where the user's touch operation is performed is implemented in a borderless seamless design with a push function and scroll function according to touch, and multiple manipulations such as push and scroll are implemented using an internal vibration actuator. There are advantages to being able to

In addition, by forming a dome-shaped protrusion having a protrusion that mimics the existing scroll wheel on the surface of the scroll input unit receiving the user's touch input, the dome-shaped protrusion having the protrusion provides a feeling of operation similar to that of the existing scroll wheel. It can be implemented, and it is possible for the user to easily recognize the position of the scroll wheel through the protrusion, and it is possible to provide convenience and accuracy during scroll manipulation because it is possible to clearly recognize the starting and ending points to the user during scroll manipulation. There are advantages to being

In addition, by increasing the frictional force by the protruding structure formed on the surface of the protruding portion of the scroll input unit, there is an advantage in providing a sense of reality as if a scroll wheel is rotated with a finger.

In addition, since it is configured to selectively generate two types of operation feeling of push or scroll through one vibration actuator, there is no need to separately install vibration actuators for generating a feeling of push or scroll operation. Accordingly, the vibration actuator Cost reduction can be realized by reducing the number of installations, and there is an advantage in that miniaturization of the switch device can be realized.

In addition, in the past, in order to detect finger touch coordinates during electrostatic touch sensing, a single-layer electrode sheet having a vertical electrode arrangement structure and a two-layer electrode sheet having a horizontal electrode arrangement structure were required, but the switch device of the present invention Since electrostatic touch coordinates can be extracted through a specific algorithm using a touch substrate composed of a single-layer touch electrode sheet having an actual electrode and a virtual electrode adjacent thereto, cost due to a decrease in the number of installed touch electrode sheets It has the advantage of realizing savings and product miniaturization.

In addition, since the vehicle switch of the present invention can accurately determine a user's push operation or scroll operation based on an electrostatic touch and touch pressure and provide a corresponding operation feeling through a vibration actuator, the user's unintended erroneous operation has the advantage of reducing

1 is a schematic diagram showing a steering wheel portion to which a vehicle switch according to the present invention is mounted;
Figure 2 is a perspective view showing the exterior structure of the vehicle switch according to the present invention.
Figure 3 is an exploded perspective view of Figure 2;
Figure 4 is a detailed view showing the structure of the damper member mounted on the vehicle switch according to the present invention in detail.
Figure 5 is a detailed view showing the structure of the bottom portion of the case to which the damper member is assembled.
Figure 6 is a perspective view showing the rear structure of the holder formed with a boss inserted into the hollow hole portion of the damper member.
Figure 7 is a cross-sectional view of the section AA of Figure 3, showing a detailed structure of the coupling structure of the vibration actuator.
Figure 8 is a cross-sectional view of the BB section of Figure 4, showing in detail the coupling structure of the damper member.
9 is a plan view showing a structure of an escape hole formed around a mounting hole of a case;
10 is an operation diagram showing a vibration damping action of a damper member according to longitudinal and transverse vibrations of a vibration actuator;
11 is a simulated image through finite element analysis of the deformation of the buffer protrusion of the damper member according to the longitudinal and transverse vibrations of the vibration actuator.
12 is a graph showing a vibration damping pattern by a damper member according to the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention.

However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In addition, parts marked with the same reference numerals throughout the detailed description indicate the same components.

Hereinafter, a preferred embodiment of a switch device for a vehicle having a damping function according to the present invention will be described in detail with reference to the accompanying drawings.

First, FIG. 1 shows a portion where a vehicle switch 100 having a damping function according to the present invention is mounted. The vehicle switch 100 according to the present invention is mounted on a steering wheel 102 of a vehicle and mounted in the vehicle It can be provided to be able to manipulate various electronic components.

In addition, the vehicle switch 100 according to the present invention may be configured such that a user touches the surface of the knob 110 to operate various electrical components of the vehicle. In this case, feedback corresponding to the user's input operation is provided. It may be configured as a haptic responsive switch that provides a user with a feeling of operation by providing vibration.

Exemplarily, the vehicle switch 100 of the present invention includes a scroll input unit S disposed at the center of the knob 110 and four push input units disposed in the front, rear, left and right directions around the scroll input unit S, respectively. (P1, P2, P3, P4), and the scroll input unit (S) and four push input units (P1, P2, P3, P4) can be pushed by a touch operation using a user's finger or It may be configured to implement a scroll function.

In addition, the vehicle switch 100 of the present invention is implemented in a seamless design that eliminates the boundary line dividing each switch provided in the existing switch device, and can provide a luxurious aesthetic sense in terms of design.

In addition, when a push input is applied through the four push input units P1, P2, P3, and P4 according to the user's touch operation or a scroll input is applied through the central scroll input unit S, the internal vibration actuator 170 ) to generate a unique vibration waveform corresponding to a push or scroll manipulation, so that a user can provide a multi-manipulation feeling, such as pressing a push switch or rotating a scroll wheel.

On the other hand, Figures 2 and 3 show a specific configuration of the vehicle switch according to the present invention, the vehicle switch 100 according to the present invention, the knob 110 to which the user's touch manipulation is input, the knob 110 A touch board 120 that recognizes a user's touch input through the touch board 120, a holder 150 disposed under the touch board 120, and the holder 150 are accommodated inside and the knob 110 and A vibration actuator 170 mounted on the lower surface of the coupled case 160 and the holder 150 to provide vibration feedback according to a user's touch input by vibrating the holder 150 in the longitudinal or transverse direction, A damping means for damping vibration transmitted through the vibration actuator 170 and a main board 140 connected to the touch board 120 and operating the vibration actuator 170 according to a touch input recognized by the touch board 120 ) and a cover 190 coupled to the lower portion of the case 160 while surrounding the main board 140 .

The knob 110 is a switch panel to which a user's touch manipulation is input. The knob 110 is disposed in the central scroll input unit S to which the user's scroll manipulation is input and in the up, down, left and right directions of the scroll input unit S, so that the user's It is composed of four push input units P1, P2, P3, and P4 through which push manipulation is input.

Here, the scroll input unit (S) is a part that replaces the existing scroll wheel function, and is not a structure in which rotation is performed by the user's finger like the existing scroll wheel structure, but a user presses the scroll input unit (S) with a finger at a certain level. It is a part prepared to perform a function similar to manipulating a scroll wheel when moving in an up or down direction in a state of being touched by applying .

Such a scroll input unit (S) is a dome-shaped protrusion protruding upward convexly forming a gentle curve on the surface of the knob 110 in order to give the user a scrolling feeling similar to that of a conventional scroll wheel. 103 may be formed, and a plurality of protrusions 104 may be formed in a structure in which a surface of the protruding protrusion 103 is arranged.

In this way, by forming the scroll input unit (S) at the center of the knob 110 to have a convex protrusion 103 structure in which a plurality of protrusions 104 are arranged on the surface so as to implement a feeling of operation similar to that of a conventional scroll wheel, Since the user can easily recognize the position of the scroll wheel through the scroll input unit S having the structure of the protruding part 103 provided with the protruding part 104, and the user can clearly recognize the starting point and the ending point when scrolling, scrolling Accuracy and convenience can be provided according to operation.

In addition, the frictional force between the user's finger and the surface of the knob 110 is increased by a plurality of protrusion structures formed on the surface of the convexly protruding scroll input unit (S), so that the user feels as if the user is rotating a scroll wheel with his or her fingers. can provide

Meanwhile, a sheet shape having a plurality of electrodes (not shown) capable of detecting a change in capacitance at a touch point when a user's touch is input through the knob 110 is formed at the bottom of the knob 110. A touch substrate 120 is installed.

In this case, the touch board 120 is mutually connected to a touch controller IC (Touch Controller IC) configured as a circuit on the main board 140 disposed below through a flexible PCB (FPCB) 130, and the touch board 120 When a change in capacitance is detected through a plurality of electrodes of the touch controller IC provided on the main board 140, a user's touch input may be recognized and touch coordinates may be extracted.

In addition, the touch substrate 120 includes five actual electrodes having a cross (+) arrangement structure capable of actually detecting a user's touch, and four corner portions adjacent to the five actual electrodes to form a square coordinate A single-layered touch electrode sheet composed of four virtual electrodes disposed on the surface, and configured to extract touch coordinates by detecting a change in capacitance according to a user's touch input.

In this case, the extraction of touch coordinates using the touch substrate 120 is based on actual electrodes that detect capacitance changes generated at actual touch points upon user touch input, and capacitance changes detected at the actual electrodes. Touch coordinates may be extracted through a specific algorithm formula using virtual electrodes for which capacitance variation values are calculated based on the virtual electrodes and weights assigned to each coordinate of each electrode.

At this time, since the virtual electrode is a virtual electrode that cannot actually detect the user's touch input unlike the actual electrode, the capacitance change value detected at the virtual electrode part is the same as the capacitance change value detected from the actual electrodes adjacent to it. It can be set as an average value. In this way, in order to extract the X and Y coordinates for each touch point, the capacitance change value in the virtual electrode is set as the average value of the capacitance change value of the actual electrodes adjacent to it, and a weight is applied for each touch coordinate. The X and Y coordinates can be calculated from the capacitance change value read from the touch coordinates and the weight set for each touch coordinate through a specific algorithm formula.

And, a holder 150 is installed under the touch substrate 120 . The holder 150 is assembled inside the case 160 located at the bottom, and the case 160 in which the holder 150 is assembled is coupled to the knob 110 located at the top by a mutual hook fastening method.

In addition, on the lower side of the holder 150, when a push or scroll input is applied to the knob 110, a vibration actuator 170 is provided to give the user a feeling of operation by providing vibration feedback according to the push or scroll input. are provided

The vibration actuator 170 includes a fixed part 171 fixed to the case 160 and a movable part 172 fixed to the holder 150 . The fixing part 171 passes through the hole 165 formed on the bottom surface 161 of the case 160 and the hole 151 formed on the bottom surface of the holder 150 to reach the upper and lower sides of the fixing part 171. Each of the coupling parts 171a and 171b provided in the case 160 is fastened through a screw (not shown) in a state in contact with the upper and lower surfaces of the support part 167 formed around the hole 165.

In addition, the movable part 172 passes through the hole 165 formed in the case 160 and the hole 151 formed in the holder 150, and the coupling part 172a provided on the upper side of the movable part 172 is connected to the holder 150. A pair of coupling parts 172b fitted into the coupling boss 155 formed on the lower surface of the upper support part 154 and provided on the lower side of the movable part 172 are a pair of lower support parts protruding from the lower surface of the holder 150 ( 156) It is fastened through a screw (not shown) in a state of contact with the lower end. At this time, the fixing part 171 of the vibration actuator 170 is electrically connected to a vibration actuator driver (not shown) configured as a circuit on the main board 140, and the operation can be controlled by the vibration actuator driver.

That is, as the vibration actuator driver provided on the main board 140 applies a feedback signal according to the touch input to the fixing part 171 of the vibration actuator 170 in the form of a constant current and a predetermined waveform, the holder The movable part 172 fixed to the 150 can provide feedback vibration to the user through the movable chain holder 150 and the knob 110 while vibrating in the vertical direction by electromagnetic interaction with the fixed part 171. there is.

At this time, the vibration actuator 170 may generate push vibration of a specific vibration waveform when a user's push input is applied through the push input units P1, P2, P3, and P4 of the knob 110, and the scroll input unit S When a scroll input is applied through the scroll vibration of another specific vibration waveform, it is possible to provide a user with a unique manipulation feeling according to a push or scroll input.

In addition, a pressure sensor (not shown) for detecting a touch pressure applied to the knob 110 by a user is installed under the knob 110, and the touch substrate 120 and the pressure sensor are installed on the main board 140. A control unit (not shown) is provided to determine whether the user intends to perform a push or scroll operation based on information detected through the vibration actuator 170 and to generate a vibration waveform corresponding to the push or scroll operation. .

The pressure sensor is installed to detect the pressure applied to the knob 110 when a user pushes or scrolls, and the control unit determines whether the user intends to perform a push function or scroll through the pressure value detected through the pressure sensor. It can be judged whether the function is intended or not.

That is, when a touch input is applied to the knob 110 by the user, the touch point of the user's finger is recognized through the touch board 120 and the touch controller IC, and through the coordinates of the touch point, whether the user intends the push function or not scroll function It is determined whether or not to intend, and this can be finally determined through the pressure value detected from the pressure sensor.

In addition, the control unit recognizes the determined user's intended motion and controls to generate scroll vibration through the vibration actuator 170 in the case of a scroll input, and to generate push vibration in the case of a push input. . In this way, since it is possible to accurately recognize whether the user intends to scroll or push input using the touch substrate 120 and the pressure sensor, the user's unintentional erroneous operation can be reduced.

In addition, since the vehicle switch 100 of the present invention can selectively provide a push operation feeling and a scroll operation feeling to the user through one vibration actuator 170 installed therein, the number of vibration actuators 170 installed is reduced. Not only cost reduction can be implemented, but also an effect of miniaturization of the switch device 100 can be obtained.

In addition, the cover 190 is coupled to the case 160 by a hook fastening method on the lower side of the case 160 with the main substrate 140 interposed therebetween, so that the inside of the cover 190 where the main substrate 140 is located is outside. The inflow of dust or moisture can be prevented and the IN/OUTPUT connector including the main board 140 can be stably protected.

On the other hand, when vibration is generated by the operation of the vibration actuator 170, the vibration is transmitted to the knob 110 through the holder 150 to provide a user with a feeling of operation. In this case, the vibration generated by the vibration actuator 170 As a result, flow according to vibration is generated in the holder 150 and the knob 110 to operate as a movable body, and the case 160 and the cover 190 do not transmit vibration and do not generate flow. It will work as a body.

In this case, a separate damping unit capable of damping vibration may be provided between the holder 150, which is a movable body, and the case 160, which is a fixed body, so that the vibration is not transmitted to the case 160 through the holder 150. Such a damping means attenuates the vibration waveform transmitted to the entire movable body including the holder 150, the touch substrate 120, and the knob 110, and intervenes so that the entire movable body quickly switches to a stationary state.

4 is a detailed view showing the structure of a damping means assembled between a holder and a case to damp vibration. Further, FIG. 5 is a detailed view showing the bottom structure of the case in which the damper means is assembled, and FIG. 6 is a perspective view showing the rear structure of the holder having a boss inserted into the hollow hole portion of the damper means. 7 is a cross-sectional view of the A-A section of FIG. 3, showing a detailed structure of the coupling structure of the vibration actuator, and FIG. 8 is a cross-sectional view of the B-B section of FIG. 4, showing the coupling structure of the damper member in detail.

4 to 8, the damping means according to the present invention, a plurality of damper members 180 assembled on the bottom surface of the case 160, protruding downward from the lower surface of the holder 150, A plurality of bosses 152 coupled to the damper member 180, a washer 184 supporting the damper member 180 coupled to the boss 152 from the bottom, and the washer 184 to the boss 152 ) It is configured to include a screw 185 fastened to the lower surface of the.

The damper member 180 is a cylindrical elastic member made of an elastically deformable material, and is made of a rubber material or a material such as silicon. Such a damper member 180 is coupled to the boss 152 formed on the lower surface of the holder 150 in a state assembled on the bottom surface 161 of the case 160 to provide a gap between the holder 150 and the case 160. When the vibration actuator 170 operates while being spaced apart at regular intervals, vibration in the longitudinal direction or transverse direction transmitted to the holder 150 may be damped.

Specifically, a hollow hole 181 into which a boss 152 protruding from the lower surface of the holder 150 can be inserted is formed at the center of the damper member 180, and a case ( 160) is formed with an undercut portion 182 forming a 'c'-shaped stepped shape so that it can be inserted into the circular mounting hole 162 formed in the bottom surface 161 portion and assembled.

In this case, the upper and lower widths of the undercut portion 182 formed on the outer circumferential surface of the damper member 180 are formed to correspond to the thickness and width of the bottom surface 161 of the case 160, and the damper member 180 has an undercut portion As the 182 is inserted into and coupled to the mounting hole 162 formed on the bottom surface 161 of the case 160, the damper member 180 can be easily assembled in the bottom surface mounting hole 162 portion of the case 160. there is.

At this time, concavely stepped portions 164 are formed around the upper and lower circumferences of the mounting hole 162, and the undercut portion 182 of the damper member 180 is formed on the upper and lower portions of the mounting hole 162. It is coupled in a state of engagement with the stepped portion 164 formed around the periphery. In this way, in a state in which the damper member 180 is assembled to the mounting hole 162, the undercut portion 182 of the damper member 180 is engaged with the circular stepped portion 164 around the mounting hole 162, thereby Transverse flow of the damper member 180 can be suppressed.

In addition, in a portion adjacent to the mounting hole 162 of the case 160, as shown in FIG. 9, the escape hole has a smaller diameter than the mounting hole 162 and has a structure in which a portion communicates with the mounting hole 162. (166) may be additionally formed. Accordingly, when assembling the damper member 180 into the mounting hole 162, press the circular damper member 180 with both fingers to make it into an oval shape, and then insert the long axis of the damper member 180 into the mounting hole 162. It is possible to easily assemble the damper member 180 to the mounting hole 162 by inserting it into the space connected with the escape hole 166 . In addition, the damper member 180 assembled in a fit-fitting manner to the mounting hole 162 portion is engaged with the case 160 portion in which the undercut portion 182 is formed with the mounting hole 162, thereby preventing longitudinal flow. state can be maintained.

In addition, the boss 152 provided at the bottom of the holder 150 is inserted downward and coupled to the hollow hole 181 of the damper member 180 assembled on the bottom surface 161 of the case 160, and the The washer 184 is fastened to the lower surface of the boss 152 inserted into the damper member 180 through a screw 185 in a butted state, so that the damper member 180 and the boss 152 can be assembled so that they are not separated from each other. there is.

At this time, a fastening groove 153 is formed at the center of the lower end of the boss 152 so that the screw 185 can be fastened, and the washer 184 has a diameter and width that can sufficiently cover and support the lower surface of the damper member 180 is formed to have Accordingly, the damper member 180, which has been coupled with the boss 152 by the washer 184 and the screw 185, maintains the damper member 180 in a state in which the central side where the undercut portion 182 is formed is fixed to the case 160, and A structure in which the upper side of the member 180 abuts and contacts the lower surface of the holder 150 and the lower side abuts and contacts the washer 184 is formed.

In this case, the case 160 and the holder 150 can be mutually assembled to form a buffer structure through the damper member 180, and the damper member 180 interposed between the case 160 and the holder 150 Due to this, a floating structure is formed in which the holder 150, which is a movable body, floats from the case 160, which is a fixed body, by a certain distance to the upper side, so that the case 160 and the holder 150 can be maintained without contacting each other. Accordingly, even when vibration is transmitted through the vibration actuator 170, since contact is not induced between the case 160 and the holder 150, generation of noise due to vibration can be suppressed.

In the embodiment of the present invention, a structure in which the outer shape of the boss 152 and the inner shape of the hollow hole 181 are each formed in a circular shape is presented as an example, but the outer shape of the boss 152 and the hollow hole 181 The inner surface of may be formed in a polygonal structure. In this case, the damper member 180 coupled with the boss 152 is prevented from rotating in the circumferential direction of the boss 152 through the coupling between the outer surface of the boss 152 having a polygonal structure and the inner surface of the hollow hole 181. can

On the other hand, the upper and lower surfaces of the damper member 180 are in contact with the lower surface of the holder 150 and the upper surface of the washer 184, respectively, and elastic deformation occurs in the corresponding direction when vibration occurs in the longitudinal or transverse direction. A plurality of buffer protrusions 183 capable of damping vibration are provided.

In this case, the buffer protrusions 183 integrally protrude from the upper and lower surfaces of the damper member 180, and a plurality of them may be arranged at regular intervals along the circumferential direction of the damper member 180. At this time, the buffer protrusions 183 arranged on the upper surface of the damper member 180 may be arranged so as to be disposed on the same line in the longitudinal direction with the buffer protrusions 183 arranged on the lower surface.

Accordingly, as shown in FIGS. 10 and 11, the plurality of buffer protrusions 183 formed on the upper surface of the damper member 180 are in contact with the lower surface of the holder 150, and the plurality of buffer protrusions 183 formed on the lower surface can perform a damping action while being in contact with the upper surface of the washer 184, and when vibration is transmitted in the longitudinal direction, the damping protrusion 183 causes elastic deformation in the longitudinal direction corresponding to it and performs a vibration damping action (see FIGS. 10 and 10(a)), and when vibration is transmitted in the lateral direction, the damping protrusion 183 causes a corresponding elastic deformation in the lateral direction to dampen the vibration. ( 10 and 11 (b))

As described above, as the plurality of buffer protrusions 183 are provided on the upper and lower surfaces of the damper member 180, the vibration actuator 170 generating longitudinal vibration in the vehicle switch or the vibration actuator generating transverse vibration Regardless of whether the 170 is installed or not, when a flow in the longitudinal direction is generated in the holder 150, the buffer protrusion 183 is elastically deformed in the longitudinal direction from the peak point of the vibration and can dampen the vibration, , When flow in the transverse direction occurs, the shock absorber protrusion 183 is elastically deformed in the transverse direction and can effectively absorb vibration in the transverse direction. In addition, since the holder 150 flowing in the longitudinal or transverse direction is prevented from contacting the case 160, noise caused by mechanical contact between the case 160 and the holder 150 can be suppressed. There are advantages to being able to

The vibration damping effect by the damper member 180 equipped with such a buffer protrusion 183 can also be confirmed through the vibration experiment graph shown in FIG. 12, as shown in the graph of FIG. Accordingly, the vibration damping effect may be implemented in a pattern in which the amplitude is gradually reduced and attenuated.

In addition, in the case of the buffer protrusions 183 formed on the upper and lower surfaces of the damper member 180, the shape and number of the buffer protrusions 183 may be set differently according to the vibration frequency and acceleration of the vibration actuator 170. Damping by adjusting the shape and number of buffer protrusions 183 of the damper member 180 according to the vibration frequency and acceleration of the vibration actuator 170 by utilizing the damping vibration motion model of the system including the mass, spring, and damper. can be used as a control factor to attenuate In this way, by adjusting the shape and number of the damper protrusions 183 formed on the upper and lower surfaces of the damper member 180, a vibration damping effect can be exhibited corresponding to switch products having various vibration frequencies.

As described above, in the vehicle switch 100 having a damping function according to the present invention, the damper member 180 is coupled to the mounting hole 162 formed on the bottom surface of the case 160, and the damper member 180 A floating structure in which the boss 152 of the holder 150 is inserted into the hollow hole 181 and the holder 150, which is a movable body, is seated at a certain distance above the case 160, which is a fixed body. Since the vibration actuator 170 is operated, longitudinal or transverse vibration transmitted through the holder 150 can be effectively damped, and mechanical collision between the holder 150 and the case 160 can be suppressed when vibration occurs. Thus, noise generation can be minimized.

In addition, as the buffer protrusions 183 are formed on the upper and lower surfaces of the damper member 180, the upper and lower buffer protrusions 183 are elastically deformed and restored to effectively absorb and dampen longitudinal or transverse vibrations. It has the advantage of being able to implement a vibration damping effect effectively even for vibration transmitted in the longitudinal or transverse direction.

In addition, when assembling the damper member 180 to the mounting hole 162 formed on the bottom surface of the case 160, insert the undercut portion 182 formed on the outer circumferential surface of the damper member 180 into the mounting hole 162 to assemble Since it is assembled in a simple way, it is possible to improve the assemblability of the product. (164) has the advantage of being able to exert an effective damping effect on vibration transmitted in the lateral direction because the lateral movement can be suppressed in engagement with the portion.

In addition, when several damper members 180 having the same structure are arranged and assembled at predetermined intervals between the case 160, which is a fixed body, and the holder 150, which is a movable chain, a plurality of damper members 180 disposed in several places Through this, a uniform vibration attenuation effect can be exhibited over the entire area of the holder 150, and since vibration feedback is uniformly applied to the knob 110 having a large area, not only a small switch but also a large switch having a large touch area. It also has the advantage of effectively providing vibration feedback.

In addition, as the damper member 180 is formed in a buffer structure that is symmetrical up and down around the undercut portion 182, a vibration damping effect between instruments located above and below can be exerted by using one damper member 180. . Accordingly, since there is no need to install the damper member 180 on the upper and lower portions of the bottom surface of the case 160, there is an advantage in reducing costs by reducing the number of parts to be assembled.

In addition, when the shape and number of the damper protrusions 183 formed on the upper and lower surfaces of the damper member 180 are appropriately adjusted and designed according to the specifications of the vibration actuator 170 installed in the switch device, a switch having various vibration frequencies There is an advantage in that the damping function can be implemented according to the model.

In the above, preferred embodiments of the present invention have been described, but the scope of the present invention is not limited only to such specific embodiments, and those skilled in the art can properly within the scope described in the claims of the present invention. change will be possible

100: vehicle switch 102: steering wheel
110: knob 120: touch board
130: FPCB 140: main board
150: holder 152: boss
153: fastening groove 160: case
162: mounting hole 166: escape hole
170: vibration actuator 180: damper member
181: hollow hole 182: undercut part
183: buffer protrusion 184: washer
185: screw 190: cover

Claims (10)

a knob through which a user's touch manipulation is performed;
a touch board recognizing a user's touch manipulation applied to the knob;
a holder disposed below the touch substrate;
a case in which the holder is accommodated and coupled to the knob;
A vibration actuator mounted on a lower surface of the holder to provide vibration feedback according to a user's touch input by vibrating the holder in a longitudinal or transverse direction;
At least one boss having an outer circumferential surface protrudes downward from the lower surface of the holder,
The bottom surface of the case is coupled to the outer circumferential surface of the boss to attenuate longitudinal or transverse vibration of the holder transmitted through the vibration actuator when the vibration actuator operates while spacing the holder and the case at regular intervals. A vehicle switch having a damping function, characterized in that the damper member is assembled.
According to claim 1,
a washer supporting a damper member coupled to an outer circumferential surface of the boss from a lower portion;
A screw fastening the washer to the lower surface of the boss; including,
The vehicle switch having a damping function, characterized in that the upper side of the damper member contacts the lower surface of the holder and the lower side contacts the upper surface of the washer.
3 . The switch for a vehicle having a damping function according to claim 2 , wherein at least one buffer protrusion contacting the lower surface of the holder and the upper surface of the washer is formed on the upper and lower surfaces of the damper member, respectively.
The switch for a vehicle having a damping function according to claim 3, wherein a plurality of buffer protrusions are arranged on the upper and lower surfaces of the damper member at regular intervals in a circumferential direction.
5. The switch for a vehicle having a damping function according to claim 4, wherein the buffer protrusions formed on the upper and lower surfaces of the damper member are arranged on the same line in the longitudinal direction.
The vehicle switch having a damping function according to claim 4, wherein the shape and number of the shock absorber protrusions are determined according to the vibration frequency of the vibration actuator.
The damper member of claim 1, wherein a hollow hole into which the boss is inserted is formed at the center of the damper member, and an undercut portion having a stepped shape is formed on an outer circumferential surface so as to be inserted into a portion of the mounting hole formed on the bottom surface of the case. A vehicle switch having a damping function that
The switch for a vehicle having a damping function according to claim 7, wherein an escape hole having a diameter smaller than that of the mounting hole and communicating with the mounting hole is formed at a portion adjacent to the mounting hole of the case.
[Claim 8] The vehicle switch having a damping function according to claim 7, wherein a stepped portion is formed around the upper and lower circumferences of the mounting hole, and an undercut portion of the damper member is assembled to the stepped portion around the mounting hole. .
The switch for a vehicle having a damping function according to claim 7, wherein the boss and the hollow hole have a polygonal shape.

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