KR102010400B1 - Multi PCB Input device - Google Patents

Abstract

Disclosed is a multilayer board input device comprising a plurality of boards. A multilayer board input device according to the present invention comprises: a button unit; at least one intermediate board interposed between two boards vertically facing each other in a case; and two or more position determining guides formed on the inner circumference surface of the case so as to vertically arrange boards in a designed position. Position fixing grooves are formed on edges of each board by corresponding to the position determining guides. At least a part of each position determining guide is made of an elastically changeable flexible material in the horizontal direction. Accordingly, a position deviation in the horizontal direction between the neighboring boards can be absorbed.

Description

Multi PCB Input Device

The present invention relates to a multi-layer substrate input device, in particular two or more substrates having a button for the switch on / off operation to generate a corresponding output signal in accordance with the button operation in the case forming the device appearance to the outside The present invention relates to a multilayer substrate input device having a structure arranged in a vertical stack.

A switch is generally used to change the opening and closing of an electric circuit or to change a connection state. Switches are divided into push switch, rotary switch, tumbler switch, pull switch, etc. Among them, push switch Press the switch button to switch on / off.

The general configuration of a push switch includes a button unit to which a physical force (push operation force by a user) for operating a switch is input, and a switching signal on a substrate according to the mechanical movement of the button unit by the physical force. It includes a substrate portion having a contact for generating a, the button portion is assembled and has a case for protecting the substrate portion.

The push input switch may be structurally divided into a single substrate structure having a plurality of electric elements including a microcomputer on one substrate, and a multilayer substrate structure having a plurality of substrates mounted in one case. Among them, the multilayer board structure has an advantage of extending the functionality of the switch in accordance with the recent market demand.

In the case of multi-layer board structure, in order to achieve the miniaturization and compactness of the whole device, it adopts a configuration in which several boards are stacked up and down in a case, and a plurality of boards are rotated or horizontally positioned at a predetermined position in one case. The means for guiding a stable seat without tilting is universally applied.

1A is a schematic plan cross-sectional view of a conventional multilayer board input device (switch), and FIG. 1B is a schematic cross-sectional view of the multilayer board input device of FIG.

1A and 1B, two or more positioning guides 2 are formed in a case 1 of a conventional multilayer substrate input device. The positioning guide 2 allows the plurality of substrates 3a to 3c with respect to the case 1 to be stably positioned at a predetermined position in one case without rotation or tilting in the horizontal direction. It serves to guide the location.

Each of the substrates 3a to 3c has a fixing groove 4 corresponding to engage with the positioning guide 2, and the neighboring substrates up and down are electrically connected to each other through the connector 5. Is connected. The positioning guide 2 may be integrally formed with the case 1. For example, when the case is a plastic injection molding, the case is integrally formed with the same material as the case.

The positioning of the positioning guide 2, the fixing groove 4, and the connector 5 is such that there is a slight error (tolerance) within the allowable range from the nominal dimensions defined for the smooth assembly of the substrate to the case. Designed and manufactured. Therefore, in the multilayer board structure, assembly failure and connector damage may occur due to the positional deviation between the connectors corresponding to the accumulation of tolerances between the positioning guide and the fixing groove when the product is assembled.

In detail, the horizontal alignment between the boards is due to the accumulated tolerance between the upper and lower board-side fixing grooves with respect to the case-side positioning guide and the positional deviations d1 and d2 between the connectors that electrically connect neighboring boards. When the product is assembled, there is a problem that the board is tightly caught in the case, or the connector is damaged due to interference assembly between the connectors while the horizontal alignment between the boards is distorted.

In addition, if there is no assembly margin in the horizontal direction due to the accumulated tolerance, the board may be stuck to the case. When vibration or shock is applied from the outside, the shock is transferred to the board inside the case and the board is damaged or the connector terminal is It may be damaged, it is difficult to remove the board for component replacement, and there is a high risk of damage to the connector terminal in the process.

Japanese Laid-Open Patent No. 2017-157462 (published 2017.09.07)

The technical problem to be solved by the present invention is a multilayer board input device having a structure that can effectively prevent the assembly of the tolerance due to the accumulated tolerance (cumulative tolerance) between the substrate and the case and the positional deviation between the connector on the substrate and the damage to the connector accordingly Is to provide.

Another technical problem to be solved by the present invention is to effectively suppress the transmission of vibrations or shocks to the substrate through the case when external vibrations or external shocks are applied, thereby further improving the durability and reliability of the product. It is to provide a multi-layer substrate input device that can be.

According to an embodiment of the present invention as a means for solving the problem,

At least one intermediate substrate exists between two substrates including a button portion and disposed to face up and down in the case,

Two or more positioning guides are formed on the inner main surface of the case to align the substrates up and down at a predetermined position.

Positioning grooves are formed at the edges of the substrates corresponding to the positioning guides, and at least a portion of each positioning guide is made of a flexible material which is elastically deformable in the horizontal direction to absorb horizontal positional deviations between neighboring substrates. It provides a multi-layer substrate input device characterized in that configured to be.

More specifically, the multi-layer substrate input device according to the embodiment of the present invention,

A case coupled to the lower cover to form a mounting space therein;

A button unit coupled to the upper case;

Two or more positioning guides formed on the inner main surface of the case at a predetermined height with respect to the height direction of the case; And

And at least two substrates mounted in a mounting space formed by coupling the case and the lower cover to form a vertically stacked arrangement at a predetermined interval.

Position fixing grooves are formed at each edge of the substrate to correspond to the positioning guide,

At least a portion of each of the positioning guides may be configured of a flexible material that is elastically deformable in the horizontal direction.

Here, each of the positioning guides may be made of a flexible material whose material is the portion where the remaining substrate is fixed except for the portion where the uppermost substrate is fixed among the plurality of substrates installed in the case.

Preferably, the uppermost substrate is fixed to a part made of hard plastic so as to be stably fixed to the case without movement in a horizontal direction, and the lower substrate is fixed to a soft elastically deformable material. It is preferable to configure the positioning guide so that the substrate can flow in a horizontal direction corresponding to the positional deviation between the connectors within a range in which the positioning guide is elastically changeable.

More preferably, one or more elastic protrusions may be formed on the positioning guide surface of the portion engaging with the fixing groove so that the substrate can be stably fixed at a predetermined height in the case.

In addition, the substrates adjacent to each other in the up and down direction may be electrically connected to each other through a board to board (B TO B) connector.

According to another embodiment of the present invention as a means for solving the problem,

A case coupled to the lower cover to form a mounting space therein;

A button unit coupled to the upper case;

Two or more positioning guides formed at regular intervals on each of upper and lower inner main surfaces of the case; And

And an upper substrate and a lower substrate disposed upside down in the case.

Position fixing grooves are formed at edges of the upper substrate and the lower substrate to correspond to the positioning guides.

At least one intermediate substrate having two or more position fixing holes between the upper substrate and the lower substrate,

A part of the elastic guide consisting of a core extending from the upper upper portion to the lower portion and the elastic body surrounding the core is inserted into the position fixing hole so that the intermediate substrate can flow in a horizontal direction within a limited range to provide.

Here, a fixed contact is formed on the upper substrate to correspond to the pressing projection of the button portion, the rubber sheet having a movable contact corresponding to the fixed contact is configured to cover and protect the upper surface of the substrate of the upper substrate, and surrounds the core material The elastic body may be formed in a pocket structure made of a rubber material extending from the rubber sheet.

Further, in another embodiment of the present invention, one of the position fixing holes formed in the intermediate substrate is configured in the form of a slot, so that even if the horizontal position of the two substrates adjacent to each other up and down slightly shifts to ensure smooth assembly, It is desirable to be able to respond more effectively to impacts.

According to the multi-layer substrate input device according to an embodiment of the present invention, a part of the positioning guide for determining the assembly position of the case substrate is composed of a flexible material having elasticity. Therefore, even if there is a cumulative tolerance between the board and the case and the positional deviation between the connectors on the board, the positioning guide may be deformed in response thereto, thereby preventing damage to the board or the connector due to interference assembly.

In addition, due to the elastically deformable positioning guide, external shocks and vibrations can be effectively suppressed from being transmitted to the substrate through the case, thereby improving durability and reliability of the product, and replacing parts mounted inside the case. When disassembling the device, it is possible to remove the board stably without damaging the board or the connector.

In addition, by forming an elastic protrusion on the surface of the positioning guide of the portion engaged with the substrate in the case, the substrate can be stably fixed at a predetermined height in the case, absorbing the positional deviation between the connectors on the substrate to assemble between connectors It is possible to eliminate the use of expensive movable connector used to secure the cost can be reduced.

Figure 1a is a schematic plan cross-sectional view of a conventional multilayer substrate input device (switch).
FIG. 1B is a schematic cross-sectional view of the multilayer board input device of FIG. 1A viewed from the AA line direction. FIG.
Figure 2 is a schematic perspective view of a multi-layer substrate input device according to an embodiment of the present invention.
3 is a cross-sectional view of the multilayer board input device of FIG. 2.
4 is a schematic cross-sectional view of the multilayer board input device of FIG. 3 viewed from the CC line direction.
5 is a schematic cross-sectional view of a multi-layer substrate input apparatus according to another embodiment of the present invention.
6 (a) and 6 (b) schematically show the fixing structure of the upper substrate and the lower substrate of FIG.
FIG. 7 schematically illustrates a fixing structure of the intermediate substrate shown in FIG. 5; FIG.

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

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. A singular expression includes a plural expression unless the context clearly indicates otherwise.

The terms "comprise" or "have" herein are intended to indicate that there is a feature, number, step, action, component, part, or combination thereof described on the specification, and that one or more other features It should be understood that it does not exclude in advance the possibility of the presence or addition of numbers, steps, operations, components, parts or combinations thereof.

In addition, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

In addition, the terms “… unit”, “… unit”, “… module”, etc. described in the specification mean a unit that processes at least one function or operation, which may be implemented by hardware or software or a combination of hardware and software. Can be.

In the following description with reference to the accompanying drawings, the same components will be given the same reference numerals and duplicate description thereof will be omitted. In the following description of the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

FIG. 2 is a schematic perspective view of a multilayer board input device according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view of the multilayer board input device shown in FIG. 2. 4 is a schematic cross-sectional view of the multilayer board input device of FIG. 3 as viewed from the C-C line direction.

2 to 4, a multi-layer substrate input apparatus according to an exemplary embodiment of the present invention may include a plurality of substrates 15a to 15c mounted on the button unit 10, the case 12, and the case 12. It is composed of The physical force (push operation force by the user) for the switch operation is input through the upper surface of the button unit 10, and the case 12 is coupled to the lower cover 13 to accommodate the substrates 15a to 15c therein. Form mounting space for

The substrates 15a to 15c are arranged in a stacking manner with a predetermined gap in the case 12 so as to face up and down, and the two substrates 15a disposed at the top and bottom of the case 12. And at least one intermediate substrate 15b between the two sides 15c, and at least two positioning guides 14 for guiding the substrate assembly in the circumferential direction of the inner main surface of the case 12 and for aligning the substrates up and down at a predetermined position. Is formed.

In the drawing, a disk-shaped substrate is mounted inside the case 12 having a rectangular parallelepiped shape, and a total of four elements are formed such that opposed positioning guides 14 for aligning the substrate at a predetermined position in the case 12 face each other. Although this is merely an example, it is noted that the shape of the case 12 and the substrate and the position or number of the positioning guide 14 are not limited to the illustrated form.

Positioning grooves 150 are formed at the edges of the substrates 15a to 15c arranged in the case 12 in a vertical stacking manner to correspond to the plurality of positioning guides 14, respectively. Here, each positioning guide 14 is made of a flexible material which is elastically deformable at least partially in the horizontal direction with respect to its longitudinal direction, and thus can absorb the horizontal positional deviation between neighboring substrates due to cumulative tolerances during product assembly. have.

The configuration of a multilayer substrate input apparatus according to an embodiment of the present invention will be described in more detail.

2 to 4 again, the multilayer board input apparatus includes a case 12 coupled to the lower cover 13 to form a mounting space therein. The upper part of the case 12 is installed in a structure in which a part of the button unit 10 is input the user's switch operation force is inserted into the case 12, the inner main surface of the case 12 in the height direction of the case 12 Two or more positioning guides 14 are formed at a predetermined height relative to each other.

Two or more, preferably three or more substrates 15a to 15c are mounted in a mounting space formed by coupling the case 12 and the lower cover 13 to form a vertically stacked arrangement at a predetermined interval. In addition, at the edges of the substrates 15a to 15c, the position fixing grooves 150 coupled to each of the positioning guides 14 are formed. The positioning guide 14 is here comprised from the elastic body which can elastically deform at least one part with respect to the longitudinal direction.

Each of the positioning guides 14 is made of a material of the portion 142 on which the remaining substrates 15b and 15c are fixed except for the portion 140 on which the uppermost substrate 15a is fixed among the plurality of substrates installed in the case 12. It may be composed of a flexible material. More specifically, the portion 140 to which the uppermost substrate 15a is fixed is made of a hard plastic such as the case 12, and the remaining portion 142 to which the other substrates 15b and 15c positioned below are fixed. Silver may be composed of a soft elastic deformable material.

The material of the soft elastically deformable part may be, for example, silicon or rubber, but is not limited thereto. In case of forming the case 12, double injection molding is performed on a part formed of the hard plastic material. By applying the method, one positioning guide 14 having different materials of upper and lower portions of one positioning guide 14 may be formed.

When the part 140 on which the uppermost substrate 15a is fixed is formed of hard plastic, the horizontal movement of the uppermost substrate 15a in the case 12 can be stably fixed to the case 12. In addition, when the portion 142 to which the other substrates 15b and 15c positioned below are fixed is made of a soft elastically deformable material, the substrates 15b and 15c correspond to the cumulative tolerance of the components and the positional deviation between the connectors 16. ) May flow in the horizontal direction.

The boards adjacent to each other in the up and down direction may be electrically connected to each other through a known B TO B (Board to Board) connector 16, and the board is stably fixed at a predetermined height in the case 12. One or more elastic protrusions 145 may be formed on the surface of the positioning guide 14 of the portion engaging with the position fixing groove 150 as shown in the enlarged view of the main part of FIG. 4.

According to one embodiment of the present invention having such a configuration, a portion of the positioning guide for determining the assembly position of the case substrate is composed of a flexible material having elasticity. Therefore, even if there is a cumulative tolerance between the board and the case and the positional deviation between the connectors on the board, the positioning guide may be deformed in response thereto, thereby preventing damage to the board or the connector due to interference assembly.

In addition, due to the elastically deformable positioning guide, external shock or vibration can be effectively suppressed from being transmitted to the substrate through the case, which can improve the durability and reliability of the product, and when disassembling the device for replacing parts mounted inside the case. The advantage is that stable board removal is possible without damaging the board or connector.

In addition, by forming an elastic protrusion on the surface of the positioning guide surface of the case (parts engaging with the substrate in the case), the substrate can be stably fixed to a predetermined height within the case, and assembly between connectors in response to positional deviation between connectors on the board It is possible to eliminate the use of the expensive movable connector used to secure the properties can reduce the manufacturing cost.

FIG. 5 is a schematic longitudinal cross-sectional view of a multi-layer substrate input device according to another embodiment of the present invention, and FIGS. 6A and 6B schematically illustrate a fixing structure of an upper substrate and a lower substrate of FIG. 5. FIG. 7 is a view schematically illustrating a fixing structure of the intermediate substrate illustrated in FIG. 5.

5 to 7, a multilayer board input device according to another embodiment of the present invention may be coupled to the lower cover 23 to form a mounting space therein and a case 22 and an upper portion of the case 22. Two or more positioning guides 24a and 24c formed at predetermined intervals on the button unit 20 to be coupled, the upper and lower inner main surfaces of the case 22, and the upper substrate 25a installed inside the case 22. A lower substrate 25c.

Positioning grooves 250a and 250c are formed at the edges of the upper substrate 25a and the lower substrate 25c to correspond to the positioning guides 24a and 24c as in the above-described embodiment, and the upper substrate 25a At least one intermediate substrate 25b having two or more position fixing holes 255a and 255b exists between the substrate and the lower substrate 25c. At this time, the horizontal movement in the case 22 is limited to the upper substrate 25a and the lower substrate 25c, and the intermediate substrate 25b is relatively freely configured.

The upper substrate 25a and the lower substrate 25c are fixed to be aligned at a specified height within the case 22 without tilting or horizontal rotation through the positioning guides 24a and 24c formed integrally with the case 22. The intermediate substrate 25b may be in a horizontal direction with respect to the two substrates 25a and 25c which are relatively fixed between the upper substrate 25a and the lower substrate 25c through the elastic guide 28 to be described later. It is configured to allow relative exercise.

Therefore, as in the above-described embodiment, even if there are cumulative tolerances between components and horizontal positional deviations between connectors mounted on each board, the cumulative tolerances or positional deviations are caused by the elastic movement of the intermediate substrate 25b in the case 22. In this case, the connector may be prevented from being damaged due to the damage caused by the damage of the board or the load caused by the positional deviation.

A fixed contact 252 is formed on the upper substrate 25a to correspond to the position of the pressing protrusion 200 formed on the lower surface of the button unit 20. In addition, the rubber sheet 27 having the movable contact 272 corresponding to the fixed contact 252 is configured to cover and protect the upper surface of the substrate of the upper substrate 25a. The movable contact 272 is kept elastically spaced apart from the fixed contact 252 and is connected to the fixed contact 252 by a force for pressing the button portion 20.

A control element, for example, a microcomputer, is turned on by connecting the movable contact 272 to the fixed contact 252 by a force of pushing the button part 20 and mounted on any one of a plurality of substrates. This switch turns on and generates a corresponding control signal. The generated control signal is output to the main control element (ECU in the case of a vehicle) or the function execution device outside the input device.

The elastic guide 28 includes a core material 280 extending from the upper part to the lower part inside the case 22. And it is composed of an elastic body 282 surrounding the core 280. In this case, the elastic body 282 may have a pocket structure made of a rubber material integrally formed in the rubber sheet 27, and a part of the elastic guide 28 is inserted into the position fixing holes 255a and 255b to form an intermediate substrate 25b. Can be aligned at a predetermined height between the upper substrate 25a and the lower substrate 25c.

In particular, the intermediate substrate 25b is bound to an elastic guide 28 whose surface is composed of the elastic body 282, so that the intermediate substrate 25b is formed at a predetermined height between the upper substrate 25a and the lower substrate 25c. It can flow in the horizontal direction within the range. That is, the intermediate substrate 25b can elastically move in a direction to cancel the accumulated tolerance between the components or the horizontal positional deviation between the connectors mounted on the respective substrates.

If one of the position fixing holes 255a and 255b formed in the intermediate substrate 25b is formed in a slot shape as illustrated in FIG. 7 to bind the elastic guide 28, the intermediate substrate (25b) Even if the horizontal position of the two substrates adjacent to each other up and down slightly shifts, smooth assembling can be ensured, and the horizontal fluidity corresponding to external vibration or impact can be further increased as much as the free space of the slot.

As shown in FIG. 5, the elastic body 280 of the elastic guide 28 may be provided with a seat end 284. The seat end 284 surrounds the edge of the intermediate substrate 25b and blocks the inflow of foreign matter (dust or moisture) that penetrates into the case from the outside and forms a rubber sheet 27. Together with the elastic body 28 may be molded integrally with the rubber sheet (27).

Reference numeral 26 is a connector that electrically connects the neighboring boards so that neighboring boards can exchange information with each other. The connector 26 is a known board to board (B TO B) generally applied to connect a board to a board. It may be a connector, but is not limited thereto.

According to the multi-layered substrate input device according to another embodiment of the present invention, the elastic guide can be elastically deformed within a predetermined range in response to the left and right distortion during the assembly of the intermediate substrate, so that the accumulated tolerance between the components or mounted on each substrate It is possible to prevent the connector from being damaged due to the interference assembly due to the horizontal positional deviation between the connectors and the damage of the substrate or the load due to the positional deviation.

In addition, since the rubber sheet installed to cover the upper substrate serves to block the inflow of moisture or dust to the substrate side, the device can be safely protected from electrical defects caused by the inflow of foreign objects, and the impact or vibration from the outside Since the turnable guide acts as a damper even when applied, the occurrence of abnormal noises along with the shock can be prevented or minimized.

In addition, as in the above-described embodiment, it is possible to eliminate the use of an expensive movable connector used to secure assembly between connectors in response to the positional deviation between the connectors on the board, thereby reducing manufacturing costs. Since the intermediate board is flexible, there is an advantage in that it is possible to remove the board stably without damaging the connector when replacing parts.

In the detailed description of the present invention, only specific embodiments thereof have been described. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

<First Embodiment>
10: button portion 12: case
13: lower cover 15a, 15b, 15c: substrate
14: positioning guide 16: connector
145: elastic protrusions 150, 250a, 250c: position fixing groove
Second Embodiment
20: button 22: case
23: lower cover 25a, 25b, 25c: substrate
24a, 24c: positioning guide 26: connector
27: rubber sheet 28: elastic guide
200: Pressing protrusion 250a, 250c: Position fixing groove
252: fixed contact 272: movable contact
280: core material 282: elastic body

Claims (9)

At least one intermediate substrate 15b is present between the two substrates 15a and 15c including the button portion 10 and disposed upside down in the case 12.
Two or more positioning guides 14 are formed on the inner main surface of the case 12 to align the substrates 15a to 15c up and down at a predetermined position.
Positioning grooves 150 are formed at edges of the substrates 15a to 15c corresponding to the positioning guides 14, and at least a portion of each of the positioning guides 14 is made of a flexible material that is elastically deformable in the horizontal direction. Configured to absorb horizontal positional deviations between neighboring substrates,
Each of the positioning guides 14 is a material of a portion 142 on which the remaining substrates 15b and 15c are fixed except for the portion 140 on which the uppermost substrate 15a is fixed among the plurality of substrates installed in the case 12. Multi-layer board input device, characterized in that composed of a flexible material.
A case 12 coupled to the lower cover 13 to form a mounting space therein;
A button unit 10 coupled to an upper portion of the case 12;
Two or more positioning guides 14 formed on the inner main surface of the case 12 at a predetermined height with respect to the height direction of the case 12; And
And at least two substrates 15a to 15c mounted to form a vertically stacked arrangement in a mounting space by coupling the case 12 and the lower cover 13 to each other.
Position fixing grooves 150 are formed at edges of the substrates 15a to 15c to correspond to the positioning guides 14.
At least a part of each of the positioning guides 14 is made of a flexible material that is elastically deformable in the horizontal direction,
Each of the positioning guides 14 is a material of a portion 142 on which the remaining substrates 15b and 15c are fixed except for the portion 140 on which the uppermost substrate 15a is fixed among the plurality of substrates installed in the case 12. Multi-layer board input device, characterized in that composed of a flexible material.
delete The method according to claim 1 or 2,
Wherein the upper portion of the substrate (15a) is fixed portion 140 is formed of a hard plastic, the lower portion of the substrate to which the other portion is fixed 142 is a multi-layer substrate input device, characterized in that composed of a soft elastically deformable material.
The method according to claim 1 or 2,
Multi-layer substrate input device, characterized in that at least one elastic protrusion (145) is formed on the surface of the positioning guide (14) of the portion engaging with the positioning fixing groove (150).
The method according to claim 1 or 2,
Boards adjacent to each other in the up and down direction is connected to each other via a board to board (B TO B) connector (16), characterized in that the multilayer board input device.
A case 22 coupled to the lower cover 23 to form a mounting space therein;
A button unit 20 coupled to an upper portion of the case 22;
Two or more positioning guides (24a, 24c) formed at regular intervals on each of the upper and lower inner main surfaces of the case (22); And
And an upper substrate 25a and a lower substrate 25c disposed to face up and down in the case 22.
Positioning grooves 250a and 250c are formed at edges of the upper substrate 25a and the lower substrate 25c to correspond to the positioning guides 24a and 24c.
At least one intermediate substrate 25b having two or more position fixing holes 255a and 255b exists between the upper substrate 25a and the lower substrate 25c.
A portion of the elastic guide 28 composed of a core 280 extending from the inner upper portion of the case 22 to the lower portion and an elastic body 282 surrounding the core 280 is inserted into the position fixing holes 255a and 255b to be inserted into the middle. Multi-layer substrate input device, characterized in that the substrate 25b is configured to flow in the horizontal direction within a limited range.
The method of claim 7, wherein
A fixed contact 252 is formed on the upper substrate 25a to correspond to the pressing protrusion 200 of the button unit 20.
The rubber sheet 27 having the movable contact 272 corresponding to the fixed contact 252 is configured to cover and protect the upper surface of the substrate of the upper substrate 25a,
The elastic body 282 surrounding the core material 280 is a multi-layer substrate input device, characterized in that formed in the pocket structure of the rubber material extending from the rubber sheet (27).
The method of claim 7, wherein
One of the position fixing holes (255a, 255b) formed in the intermediate substrate (25b) (255b) is a multi-layer substrate input device, characterized in that configured in the form of a slot.

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