KR101053223B1 - Dome sheet for keypad, manufacturing apparatus of the same and manufacturing method of the same - Google Patents

Dome sheet for keypad, manufacturing apparatus of the same and manufacturing method of the same Download PDF

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Publication number
KR101053223B1
KR101053223B1 KR1020100133573A KR20100133573A KR101053223B1 KR 101053223 B1 KR101053223 B1 KR 101053223B1 KR 1020100133573 A KR1020100133573 A KR 1020100133573A KR 20100133573 A KR20100133573 A KR 20100133573A KR 101053223 B1 KR101053223 B1 KR 101053223B1
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KR
South Korea
Prior art keywords
sheet
dome
actuator
primer layer
keypad
Prior art date
Application number
KR1020100133573A
Other languages
Korean (ko)
Inventor
이현진
Original Assignee
이현진
주식회사 유스테크
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Publication date
Application filed by 이현진, 주식회사 유스테크 filed Critical 이현진
Priority to KR1020100133573A priority Critical patent/KR101053223B1/en
Application granted granted Critical
Publication of KR101053223B1 publication Critical patent/KR101053223B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/704—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by the layers, e.g. by their material or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/88—Processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/024—Packing between substrate and membrane
    • H01H2229/028—Adhesive

Abstract

The present invention relates to a dome sheet for a keypad, a manufacturing apparatus thereof, and a method for manufacturing the same. In particular, a dome sheet for a keypad and an apparatus for manufacturing the same may be equipped with an actuator smaller than the size of a metal dome to increase a feeling of clicking and coupling with other parts. And to a method for producing the same.
Keypad dome sheet of the present invention, the base sheet formed with a first through hole; A metal dome disposed in the first through hole and protruding convexly in an upward direction; A top sheet stacked on top of the metal dome and base sheet; A primer layer applied on the top sheet; The primer layer is stacked on top of the primer layer, and includes an actuator in which a push protrusion protrudes in an upward direction, wherein the primer layer strongly couples the actuator to the top sheet, and the actuator is disposed at the center of the metal dome and is formed of the metal dome. It is characterized in that formed smaller than the size.

Description

Keypad dome sheet, manufacturing apparatus and manufacturing method thereof {DOME SHEET FOR KEYPAD, MANUFACTURING APPARATUS OF THE SAME AND MANUFACTURING METHOD OF THE SAME}

The present invention relates to a dome sheet for a keypad, a manufacturing apparatus thereof, and a method for manufacturing the same. In particular, a dome sheet for a keypad and an apparatus for manufacturing the same may be equipped with an actuator smaller than the size of a metal dome to increase a feeling of clicking and coupling with other parts. And to a method for producing the same.

In general, a portable keypad is a switch device that is provided on the surface of a mobile phone and allows a user to make a call by pressing a button portion such as a number. The portable keypad is located on a PCB substrate having a plurality of switches for generating an on / off signal. .

In this case, when the portable keypad is pressed, a metal dome is provided at a position corresponding to the switch to obtain the operation of the switch provided on the PCB.

The metal dome is used in the state of a dome sheet attached on a thin plate-shaped base sheet.

At this time, the metal dome is made of a stainless steel plate with a central convex upward, the base sheet mainly uses a white synthetic resin sheet.

Such a dome sheet is provided between the keypad and the PCB substrate, and a waveguide sheet is further provided between the keypad and the dome sheet to irradiate light with the keypad.

However, the conventional keypad assembly for a mobile phone has a problem that the click feeling of the metal dome is reduced when it is assembled in a twisted state because its position adjustment is not easy even though the upper keypad protrusion is to be assembled to be located at the center of the metal dome. .

In particular, in recent years, a keypad having a state in which a waveguide sheet is integrally attached to the lower surface of the keypad part has been released. If the keypad is pressed, there is a problem that the click feeling is greatly reduced.

In order to solve this problem, Korean Patent Publication No. 10-0929150 discloses a dome sheet for a keypad as shown in FIGS. 1 and 2.

1 is a perspective view of a conventional dome sheet for a keypad, and FIG. 2 is a cross-sectional view of the dome sheet for a keypad shown in FIG. 1.

1 and 2, the dome sheet structure for the keypad illustrated in FIG. 1 includes a base sheet 50 having a through hole 51 on an upper surface of a release paper 60, and a through hole 51 of the base sheet 50. The metal dome 40 is seated, and the transparent top sheet 30 is attached to the top surface of the metal dome 40 and the base sheet 50, and a primer printed coating layer 20 is formed on the top sheet 30. In addition, the thermosetting liquid silicone 10 is vulcanized by forming a thermosetting liquid silicone 10 on the upper surface of the primer printed coating layer 20, and an actuator 11, which is a boss contact upward, protrudes from the upper side of the metal dome 40.

However, this conventional keypad dome sheet structure, since the liquid silicone 10 covers the entire dome sheet, when the actuator 11 is pressed by an external force of the liquid silicone 10 that covers the entire dome sheet There is a disadvantage that the click feeling is reduced by elasticity.

In addition, the upper portion of the dome sheet is coupled to the waveguide sheet, pads, etc. are laminated through the double-sided tape, the double-sided tape has a weak adhesive strength with the liquid silicon 10, the waveguide sheet, the pad on the top of the dome sheet There is a problem that the back is easily separated.

The present invention is to solve the above-mentioned problems, the keypad dome sheet and the manufacturing apparatus and its manufacturing apparatus which can improve the bonding force with other parts laminated on the top of the dome sheet while at the same time good feeling of click The purpose is to provide a method.

In order to achieve the above object, the keypad dome sheet of the present invention includes a base sheet having a first through hole formed therein; A metal dome disposed in the first through hole and protruding convexly in an upward direction; A top sheet stacked on top of the metal dome and base sheet; A primer layer applied on the top sheet; The primer layer is stacked on top of the primer layer, and includes an actuator in which a push protrusion protrudes in an upward direction, wherein the primer layer strongly couples the actuator to the top sheet, and the actuator is disposed at the center of the metal dome and is formed of the metal dome. It is characterized in that formed smaller than the size.

The actuator is made of a silicon material, the actuator is formed on the outer circumferential surface of the pressing projection integrally formed with a lower height than the pressing projection, the extension portion is in surface contact with the primer layer, the pressing projection of the metal dome Placed in the center.

The primer layer is smaller than the size of the metal dome and is formed equal to or larger than the size of the actuator.

In addition, the apparatus for manufacturing a dome sheet for a keypad of the present invention to achieve the above object, the base sheet is formed with a first through hole; A metal dome disposed in the first through hole and protruding upwardly; A top sheet stacked on top of the metal dome and base sheet; A primer layer applied on the top sheet; The primer layer is stacked on top of the primer layer, and includes an actuator in which a push protrusion protrudes in an upward direction, wherein the primer layer strongly couples the actuator to the top sheet, and the actuator is disposed at the center of the metal dome and is formed of the metal dome. An apparatus for manufacturing a dome sheet for a keypad formed smaller in size, the apparatus comprising: a lower mold disposed under the dome sheet and in contact with a bottom surface of the dome sheet; The upper mold is disposed on the dome sheet to be in contact with the upper surface of the dome sheet, the upper mold is formed in the forming groove for forming the actuator, and the projection groove is formed in the center of the forming groove to form the pressing protrusion Is formed, the lower portion of the upper mold or the upper portion of the lower mold is characterized in that the outlet portion is in communication with the forming groove when the upper mold and the lower mold contact each other.

The outlet part is formed on the outer side of the forming groove, and when the upper mold and the lower mold contact each other, the filling material for forming the actuator is filled in the forming groove and the rest flows out to the outlet.

The lower portion of the upper mold has a cutting portion protruding downwardly formed between the forming groove and the outlet portion, the cutting portion is spaced apart from the top sheet and the primer layer when the upper mold and the lower mold contact each other, the cutting portion The thickness of the filling material located in the lower portion is formed thinner than the thickness of the filling material filled in the molding groove and the outlet portion.

The lower mold has a support for supporting the lower portion of the metal dome in an upward direction to protrude upward.

In order to achieve the above object, a method for manufacturing a dome sheet for a keypad of the present invention includes a method for manufacturing a dome sheet for a keypad having an actuator protruding therefrom, the base sheet having a first through hole formed therein; A metal dome disposed in the first through hole and protruding upwardly; A preparation step of preparing a laminate comprising a top sheet stacked on top of the metal dome and base sheet; A primer layer forming step of applying a primer to the upper portion of the laminate to form a primer layer to increase the bonding force between the actuator and the laminate; A seating step of mounting the laminate on top of a lower mold; A discharging step of discharging a filling material for forming the actuator on the primer layer; The pressurizing step of forming the actuator by pressing the filling material by lowering the upper mold disposed on the upper mold and formed with a molding groove for forming the actuator at the lower portion, the filling material in the pressing step Filled in the forming groove is formed in the center of the metal dome to form the actuator smaller than the size of the metal dome.

After the filling material pressurized in the pressing step is filled in the molding groove, the remainder is formed in the lower portion of the upper mold or the upper portion of the lower mold and flows to the outlet portion communicating with the molding groove.

Between the primer layer forming step and the discharging step, a masking forming step of attaching a masking tape having a second through-hole as large as the size of the actuator to be formed on the primer layer and the laminate is further included, after the pressing step The masking removal step of removing the masking tape is further included, but the residual filling material discharged to the outlet portion in the pressing step is laminated on the masking tape.

In the primer layer forming step, the primer layer is formed larger than the size of the actuator.

After the pressurizing step further comprises a step of removing the remaining filling material to remove the remaining filling material flowing into the outlet portion, the lower portion of the upper mold is formed between the cutting groove and the outlet portion is formed to project downwards In the primer layer forming step, the diameter of the primer layer is formed to be the same as the diameter of the cutting part. In the residual filling material removing step, the remaining filling material is discharged to the outlet part in the pressing step and laminated on the top sheet. It is peeled off to the cutting part and removed.

According to the dome sheet for the keypad, the manufacturing apparatus and the manufacturing method of the present invention as described above, by forming the actuator smaller than the metal dome, it can be improved by the click feeling of the dome sheet, both sides on the portion where the actuator is not formed The adhesive can be attached to increase the bonding force with other parts laminated on top of the dome sheet.

1 is a perspective view of a dome sheet for a conventional keypad,
2 is a cross-sectional view of the dome sheet for the keypad shown in FIG.
3 is a perspective view of a dome sheet for a keypad according to an embodiment of the present invention;
4 is a cross-sectional view taken along line AA of FIG. 3;
5 is a flowchart illustrating a method of manufacturing a dome sheet for a keypad according to a first embodiment of the present invention;
6 to 11 is a process chart for manufacturing using the manufacturing apparatus of the dome sheet for the keypad according to the first embodiment of the present invention,
12 is a flowchart illustrating a method of manufacturing a dome sheet for a keypad according to a second embodiment of the present invention;
13 to 17 is a process chart for manufacturing using the manufacturing apparatus of the dome sheet for the keypad according to the second embodiment of the present invention,

3 is a perspective view of a dome sheet for a keypad according to an embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line A-A of FIG.

As shown in FIGS. 3 and 4, the keypad dome sheet 100 of the present invention includes a base sheet 111, a metal dome 114, a primer layer 120, and an actuator 130. .

The base sheet 111 has a first through hole 112 penetrating in the vertical direction.

In the present embodiment, the protective paper 113 is stacked below the base sheet 111.

The metal dome 114 has a central portion formed to protrude convexly upward, and is disposed in the first through hole 112.

The top sheet 115 is stacked on the metal dome 114 and the base sheet 111.

The primer layer 120 is to strongly bond the actuator 130 to the top sheet 115, and is formed by being applied on the top sheet 115.

The actuator 130 is stacked on the primer layer 120, and the push protrusion 131 is formed to protrude upward.

The actuator 130 is made of a silicon material, disposed in the center of the metal dome 114 and formed smaller than the size of the metal dome 114.

The actuator 130 has a pressing protrusion 131 protruding upward in a center thereof, and an extension 132 having a lower height than the pressing protrusion 131 is integrally formed on an outer circumferential surface of the pressing protrusion 131. Formed.

The extension part 132 is in surface contact with the primer layer 120, and the push protrusion 131 is disposed at the center of the metal dome 114.

In addition, the primer layer 120 is smaller than the size of the metal dome 114 and is formed equal to or larger than the size of the actuator 130.

As described above, the actuator 130 does not cover the entire primer layer 120 and the top sheet 115, but is formed only in a portion to make the size of the actuator 130 smaller than the size of the dome sheet 100, When the actuator 130 descends, the metal dome 114 may be prevented from being lowered by the elastic force of the actuator 130 to improve the click feeling of the dome sheet 100.

In addition, when a double-sided tape (not shown) is attached to an upper portion of the dome sheet 100 and another component is stacked thereon, the double-sided tape is not adhered to the actuator 130 made of silicon, and the top sheet ( Since the adhesive force is increased to 115, the other component can be strongly bonded to the upper portion of the dome sheet 100.

The keypad dome sheet 100 of the present invention as described above is manufactured by a manufacturing apparatus and a manufacturing method as shown in Figs.

5 is a flowchart illustrating a method of manufacturing a dome sheet 100 for a keypad according to a first embodiment of the present invention, and FIGS. 6 to 11 illustrate a dome sheet 100 for a keypad according to a first embodiment of the present invention. It is a process chart manufactured using a manufacturing apparatus.

As shown in FIG. 5, the method for manufacturing a dome sheet 100 for a keypad according to the present invention includes a preparation step S11, a primer layer forming step S12, a masking forming step S13, and a seating step S14. ), A discharging step S15, a pressing step S16, and a masking removing step S17.

The preparation step (S11), and the base sheet 111, the first through hole 112 is formed, the metal dome 114 is disposed in the first through hole 112 and protruded convex upwards and In addition, the stack 110 includes a top sheet 115 stacked on the metal dome 114 and the base sheet 111.

That is, the laminate 110 prepared in the preparation step (S11) is composed of the base sheet 111, the metal dome 114 and the top sheet 115, as shown in FIG.

The primer layer forming step (S12), as shown in FIG. 7, by applying a primer to the upper portion of the laminate 110 to increase the bonding force between the actuator 130 and the laminate 110 ( 120).

At this time, the primer layer forming step (S12) is formed larger than the size of the actuator 130 to form the primer layer 120.

As shown in FIG. 8, the masking forming step S13 includes a second through hole 141 having a size corresponding to the size of the actuator 130 formed on the primer layer 120 and the stack 110. Attaching the masking tape 140 formed.

That is, in the masking forming step (S13), the actuator 130 is attached by attaching the masking tape 140 on which the second through hole 141 is formed on the primer layer 120 and the top sheet 115. It covers all the remaining portions except the second through hole 141 which is a position to be formed.

The seating step S14 is a step of seating the dome sheet 100 completed on the masking forming step S13 on the upper portion of the lower mold 150, as shown in FIG.

The upper mold 160 is disposed above the lower mold 150, and the dome sheet 100 is disposed between the lower mold 150 and the upper mold 160.

In the seating step (S14) is disposed so that the lower portion of the dome sheet 100 in contact with the upper portion of the lower mold 150.

In this case, the upper mold 160 is spaced apart from the dome sheet 100 and the lower mold 150.

The lower mold 150 has a support 151 for supporting the lower portion of the metal dome 114 in the upward direction to protrude upward.

The shape of the support 151 is the same as the lower shape of the metal dome 114, so as to support the lower portion of the metal dome 114 protruding upwards in the upward direction.

The upper mold 160 includes a molding groove 161 for forming the actuator 130 and a protrusion groove 162 formed at the center of the molding groove 161 to form the pressing protrusion 131. Is formed.

In addition, when the upper mold 160 and the lower mold 150 are in contact with each other on the lower portion of the upper mold 160 and / or the lower mold 150, the outflow communicated with the forming groove 161 The portions 153 and 163 are formed.

In the present exemplary embodiment, the outlet portion includes a first outlet portion 153 formed at the lower portion of the upper mold 160 and a second outlet portion 163 formed at the upper portion of the lower mold 150.

The first outlet part 153 is formed at an outer side with respect to the molding groove 161, and the second outlet part 163 is formed at an outer side with respect to the support part 151.

When the upper mold 160 and the lower mold 150 are in contact with each other, the vertical height of the outlet portion is formed larger than the gap between the forming groove 161 and the dome sheet 100.

As illustrated in FIG. 9, the discharging step S15 is a step of discharging the filling material 135, ie, silicon, for forming the actuator 130 on the primer layer 120.

As shown in FIG. 10, the pressing step S16 includes an upper mold 160 disposed on the lower mold 150 and having a molding groove 161 formed therein for forming the actuator 130 on the lower mold 150. Pressing the filling material 135 by descending to form the actuator 130.

In the pressing step (S16), the filling material 135 is filled in the molding groove 161 to be disposed at the center of the metal dome 114 and smaller than the size of the metal dome 114. Form.

The filling material 135 pressurized in the pressing step (S16) is filled in the forming groove 161, the rest is the outlet portion through the gap formed between the forming groove 161 and the masking tape 140 It is discharged to (153, 163) is laminated on the masking tape 140.

As described above, the remaining filling material 136 after forming the actuator 130 is discharged to the outlet, when the upper mold 160 is lowered to press the filling material 135, the pressing force is the dome sheet It is possible to prevent the dome sheet 100 from being deformed by the pressing force by preventing it from reaching the 100 more than necessary.

In addition, since the vertical height of the outlet portion is greater than the gap between the forming groove 161 and the primer layer 120, the pressing force according to the lowering of the upper mold 160 to the residual filling material 136 flowed into the outlet portion. This does not work will not pressurize the dome sheet 100.

In addition, the lower mold 150 has the support portion 151 supporting the lower portion of the metal dome 114, when pressing the filling material 135 in the pressing step (S16), the metal Molding failure caused by the dome 114 is moved or clicked can be prevented.

As shown in FIG. 11, the masking removing step S17 is a step of removing the masking tape 140 adhered to the upper portion of the primer layer 120 and the top sheet 115.

Since the remaining filling material 136 formed after forming the actuator 130 is coated on the masking tape 140, when the masking tape 140 is peeled off and removed, the actuator 130 to be molded. ) And only the remaining part is removed together with the masking tape 140.

Through the manufacturing apparatus and the manufacturing method as described above it is possible to manufacture the dome sheet 100 in which the actuator 130 is formed only in part.

Meanwhile, the dome sheet 100 for a keypad of the present invention may be manufactured by another manufacturing apparatus and manufacturing method as shown in FIGS. 12 to 17.

12 is a flowchart illustrating a method of manufacturing a dome sheet 100 for a keypad according to a second embodiment of the present invention, and FIGS. 13 to 17 illustrate a dome sheet 100 for a keypad according to a second embodiment of the present invention. It is a process chart manufactured using a manufacturing apparatus.

As shown in FIG. 12, the method for manufacturing a dome sheet 100 for a keypad according to the present invention includes a preparation step S21, a primer layer forming step S22, a seating step S24, and a discharge step S25. And, the pressure step (S26), and the remaining filling material removal step (S27).

The preparation step S21 illustrated in FIG. 13 is the same as the first embodiment and the preparation step S11 described above, and a detailed description thereof will be omitted.

The primer layer forming step (S22), as shown in Figure 14, by applying a primer on top of the stack 110, the primer layer to increase the bonding force of the actuator 130 and the stack 110 ( 120).

At this time, the primer layer forming step (S22) is formed to be substantially the same as the size of the actuator 130 to form the diameter of the primer layer 120.

The seating step S24 and the discharge step S25 shown in FIG. 15 are the same as the seating step S14 and the discharge step S15 of the first embodiment described above, and thus a detailed description thereof will be omitted.

The lower mold 250 is the same as the lower mold 150 of the first embodiment, and the upper mold 260 is different from the upper mold 160 of the first embodiment.

In the second embodiment, a lower portion of the upper mold 260 is formed to protrude downwardly between the forming grooves 261 and the outlet portions 253 and 263.

The cutting part 264 is spaced apart from the top sheet 115 and the primer layer 120 when the upper mold 260 and the lower mold 250 contact each other.

In the pressing step S26 illustrated in FIG. 16, the upper mold 260 is lowered to press the filling material 135 to form the actuator 130, and the filling material 135 is formed by the molding. After filling the groove 261, the rest is discharged to the outlets 253 and 263.

In this case, since the thickness of the filling material 135 disposed below the cutting part 264 is formed so that the cutting part 264 protrudes downward, the filling material filled in the molding groove 261 and the outlet part is formed. It is formed thinner than the thickness of 135.

In addition, since the diameter of the primer layer 120 is formed to be the same as that of the cutting part 264 in the primer layer forming step S22, the filling material 135 inside the cutting part 264. Is stacked on top of the primer layer 120, and the remaining filling material 136 leaked out of the cutting portion 264 and outflow is stacked on the top sheet 115 as it is.

As shown in FIG. 17, the residual filling material removing step (S27) flows into the outlet parts 253 and 263 and the remaining filling material 136 stacked on the top sheet 115 is cut through the cutting part 264. It is a step of peeling off.

In this case, the filling material 135 stacked on the primer layer 120 to form the actuator 130 is strongly bonded by the primer layer 120, and thus, is not easily peeled off. Since the residual filler material 136 stacked on the primer layer 120 does not exist at the bottom, it is easily peeled off.

In addition, since the thickness of the boundary between the actuator 130 and the remaining filling material 136 is the thinnest by the cutting part 264, the thickness is thinly formed by the cutting part 264. The remaining filling material 136 formed can be easily peeled off.

Therefore, when the residual filling material 136 is pulled up in the step of removing the residual filling material (S27), the actuator 130 stacked on the upper portion of the primer layer 120 is not peeled off. Only 136 is peeled off based on the cutting unit 264 to be removed.

Through the manufacturing apparatus and the manufacturing method as described above it is possible to manufacture the dome sheet 100 in which the actuator 130 is formed only in part.

The keypad dome sheet of the present invention, a manufacturing apparatus thereof, and a method of manufacturing the same are not limited to the above-described embodiments, and may be variously modified and implemented within the scope of the technical idea of the present invention.

100: dome sheet, 110: laminated body, 111: base sheet, 112: first through hole, 113: protective paper, 114: metal dome, 115: top sheet, 120: primer layer, 130: actuator, 131: push protrusion, 132 : Extension part, 135: filling material, 136: residual filling material, 140: masking tape, 141: second through hole, 150, 250: lower mold, 151,251: supporting part, 153,253: first outflow part, 160,260: upper mold, 161,261: Molding groove, 162,262: projection groove, 163,263: second outflow portion, 264: cutting portion,
S11: preparation step, S12: primer layer forming step, S13: masking forming step, S14: seating step, S15: discharge step, S16: pressing step, S17: masking removal step, S21: preparation step, S22: primer layer forming step , S24: Settling step, S25: Discharge step, S26: Pressing step, S27: Residual filling material removal step,

Claims (12)

A base sheet having a first through hole formed therein;
A metal dome disposed in the first through hole and protruding convexly in an upward direction;
A top sheet stacked on top of the metal dome and base sheet;
A primer layer applied on the top sheet;
Stacked on top of the primer layer, made of an actuator of silicon material protruding pressing protrusion in the upward direction,
The primer layer strongly binds the actuator to the topsheet,
The actuator is disposed in the center of the metal dome is formed smaller than the size of the metal dome,
The actuator is integrally formed with an extension having a height lower than that of the push protrusion on the outer circumferential surface of the push protrusion,
The extension part is in surface contact with the primer layer, the push projection is a keypad dome sheet, characterized in that disposed in the center of the metal dome. delete The method of claim 1,
The primer layer is smaller than the size of the metal dome, the dome sheet for the keypad, characterized in that equal to or larger than the size of the actuator. A base sheet having a first through hole formed therein; A metal dome disposed in the first through hole and protruding upwardly; A top sheet stacked on top of the metal dome and base sheet; A primer layer applied on the top sheet; The primer layer is stacked on top of the primer layer, and includes an actuator in which a push protrusion protrudes in an upward direction, wherein the primer layer strongly couples the actuator to the top sheet, and the actuator is disposed at the center of the metal dome and is formed of the metal dome. In the device for manufacturing a dome sheet for a keypad formed smaller than the size,
A lower mold disposed under the dome sheet and in contact with a lower surface of the dome sheet;
Is disposed on top of the dome sheet is made of an upper mold in contact with the upper surface of the dome sheet,
The upper mold is formed with a forming groove for forming the actuator, and a projection groove formed in the center of the forming groove to form the pressing protrusion,
The lower part of the upper mold or the upper portion of the lower mold manufacturing apparatus of the dome sheet for a keypad, characterized in that the outlet portion communicating with the forming groove when the upper mold and the lower mold abuts each other. The method of claim 4, wherein
The outlet portion is formed on the outer side of the forming groove,
When the upper mold and the lower mold abut each other, the manufacturing apparatus of the dome sheet for the keypad, characterized in that the filling material for forming the actuator is filled in the forming groove and the rest is discharged to the outlet. The method according to claim 4 or 5,
The lower portion of the upper mold is formed to project the cutting portion in the downward direction between the forming groove and the outlet portion,
The cutting part is spaced apart from the top sheet and the primer layer when the upper mold and the lower mold abut each other,
The thickness of the filling material located in the lower portion of the cutting portion manufacturing apparatus of the dome sheet for the keypad, characterized in that thinner than the thickness of the filling material filled in the forming groove and the outlet. The method according to claim 4 or 5,
The lower mold is a manufacturing apparatus of the dome sheet for the keypad, characterized in that the support for supporting the lower portion of the metal dome in the upward direction protruding upward. delete In the manufacturing method of the dome sheet for keypad with an actuator protruding on the top,
A base sheet having a first through hole formed therein; A metal dome disposed in the first through hole and protruding upwardly; A preparation step of preparing a laminate comprising a top sheet stacked on top of the metal dome and base sheet;
A primer layer forming step of applying a primer to the upper portion of the laminate to form a primer layer to increase the bonding force between the actuator and the laminate;
A seating step of mounting the laminate on top of a lower mold;
A discharging step of discharging a filling material for forming the actuator on the primer layer;
The pressurizing step of forming the actuator by pressing the filling material by lowering the upper mold disposed on the upper mold and formed with a molding groove for forming the actuator on the lower mold,
In the pressing step, the filling material is filled in the forming groove is disposed in the center of the metal dome to form the actuator smaller than the size of the metal dome,
The filling material pressurized in the pressing step is filled in the molding groove, the rest is formed on the lower portion of the upper mold or the upper portion of the lower mold for the keypad characterized in that outflow to the outlet communicating with the forming groove Dome sheet manufacturing method. The method of claim 9,
Between the primer layer forming step and the discharging step, a masking forming step of attaching a masking tape having a second through-hole formed as large as the size of the actuator is formed on the primer layer and the laminate,
After the pressing step is made of a masking removal step of removing the masking tape further comprises,
The method of manufacturing a dome sheet for a keypad, characterized in that the remaining filling material flowing out to the outlet portion in the pressing step is laminated on the masking tape. The method of claim 10,
In the primer layer forming step, the method of manufacturing a dome sheet for a keypad, characterized in that to form the primer layer larger than the size of the actuator. The method of claim 9,
After the pressing step is made of a residual filler material removing step of removing the residual filler material leaked to the outlet portion,
The lower portion of the upper mold is formed with a cutting portion protrudes downward between the forming groove and the outlet portion,
In the primer layer forming step, the diameter of the primer layer is formed to be the same as the diameter of the cutting unit,
The method of manufacturing a dome sheet for a keypad according to claim 1, wherein the step of removing the residual filler material removes the residual filler material which is discharged to the outlet part in the pressing step and stacked on the top sheet to the cutting part.
KR1020100133573A 2010-12-23 2010-12-23 Dome sheet for keypad, manufacturing apparatus of the same and manufacturing method of the same KR101053223B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101341051B1 (en) 2011-10-15 2013-12-11 주식회사 미즈바테크놀로지 Thermoforming dome sheet integrated with a waveguide sheet of keypad and the manufacturing method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006127800A (en) 2004-10-26 2006-05-18 Alps Electric Co Ltd Sheet having plate spring and switching device using the same
JP2006164552A (en) 2004-12-02 2006-06-22 Alps Electric Co Ltd Contact plate for switch and push-button switch using it
KR100622283B1 (en) 2004-06-28 2006-09-14 디케이 유아이엘 주식회사 Keypad for electronic appliance and thereof manufacturing method
KR200442488Y1 (en) 2007-04-11 2008-11-13 (주)유비엠메카트로닉 Key pad assembly having sheet formed of pressing projections on top of dome switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100622283B1 (en) 2004-06-28 2006-09-14 디케이 유아이엘 주식회사 Keypad for electronic appliance and thereof manufacturing method
JP2006127800A (en) 2004-10-26 2006-05-18 Alps Electric Co Ltd Sheet having plate spring and switching device using the same
JP2006164552A (en) 2004-12-02 2006-06-22 Alps Electric Co Ltd Contact plate for switch and push-button switch using it
KR200442488Y1 (en) 2007-04-11 2008-11-13 (주)유비엠메카트로닉 Key pad assembly having sheet formed of pressing projections on top of dome switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101341051B1 (en) 2011-10-15 2013-12-11 주식회사 미즈바테크놀로지 Thermoforming dome sheet integrated with a waveguide sheet of keypad and the manufacturing method

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