JP2006139952A - Switching arrangement and component for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switching arrangement and a component for it, wherein superior dustproof function for contact parts can be ensured, and an adhesive sheet can be set so as to have a comparatively small shape and size. <P>SOLUTION: In this switching arrangement, a pressure-sensitive adhesive sheet, composed of a cover sheet 1 provided with a dome-shaped movable contact 3 capable of making contact with and separating from a stationary contact 8 and a spacer sheet 2, is stuck on a printed board 6 having the stationary contacts 7, 8, non-adhering parts 2b-2e provided so as to extend in a direction of separating from the center part of the dome-shaped movable contact 3 are provided in the spacer sheet 2, and a second air escape part 10, communicating with a first air escape part 9 formed around the dome-shaped movable contact 3, is formed between a surface part on which the stationary contacts 7, 8 of the printed board 6 are disposed and the non-adhering parts 2b-2e of the cover sheet 1 and the spacer sheet 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a switch device that is provided in various electronic devices and is made by attaching a contact plate such as a dome-shaped movable contact that is pressed to an adhesive sheet, and a switch device component that is used in manufacturing the switch device.

  There exists a thing shown by patent document 1 as this kind of prior art. FIG. 5 is an exploded perspective view showing a conventional dome contact switch disclosed in Patent Document 1, that is, a switch device.

  The prior art shown in FIG. 5 is provided with an outer ring-shaped fixed contact 12 and an inner ring-shaped fixed contact 13 on a switch substrate, that is, a substrate 11. These outer ring-shaped fixed contacts 12 are provided with protrusions 21, and grooves 23 are formed in the protrusions 21. Above the fixed contacts 12, 13, a contact plate, that is, a dome contact 14 is arranged, and a peripheral portion of the dome contact 14 is always in contact with the outer ring-shaped fixed contact 12. The dome contact 14 can come into contact with the inner ring-shaped fixed contact 13 by pressing the dome contact 14. The dome contact 14 is bonded to a pressure-sensitive adhesive sheet to be bonded to the substrate 11, that is, a sheet 16 having an adhesive layer 15. The sheet 16 is formed with an air vent hole 17 at a position facing the groove 23 described above.

  In this prior art, when the sheet 16 portion to which the dome contact 14 is bonded is pressed, the dome contact 14 contacts the inner ring-shaped fixed contact 13. As a result, the inner ring-shaped fixed contact 13 and the outer ring-shaped fixed contact 12 are conducted through the dome contact 14 and switched on. When the pressing force applied to the dome contact 14 is removed, the dome contact 14 is separated from the inner ring-shaped fixed contact 13 and the inner ring-shaped fixed contact 13 and the outer ring-shaped fixed contact 12 are cut off and switched off. .

During the above operation, the air in the lower portion of the dome contact 14 due to the pressing of the dome contact 14 flows from the gap formed between the dome contact 14 and the outer ring-shaped fixed contact 12 to the groove 23, and The air is released from the air vent hole 17 of the seat 16 to the outside. Conversely, external air flows from the air vent hole 17 of the seat 16 along with the pressing release operation of the dome contact 14, and is formed between the groove 23 and the dome contact 14 and the outer ring-shaped fixed contact 12. The gap is guided to the lower part of the dome contact 14. The smooth operation of the dome contact 14 can be realized by such air inflow and outflow.
JP 2000-149707 A

  By the way, in the above-described prior art, since the air vent hole 17 that allows the outside to communicate with the outside is formed in the sheet 16, dust such as outside dust or gas is generated along with the pressing release operation of the dome contact 14. There is a concern of intrusion into the contact portions and corrosion of these contact portions, which is problematic in terms of durability.

  In order to solve such a problem, as shown in FIG. 6, for example, as shown in FIG. 6, in the back surface 33 of the pressure-sensitive adhesive sheet 30 to which the contact plate such as the dome contact 14 is attached, the periphery of the bonding portion 31 to which the contact plate is bonded In addition, it is conceivable to form an annular non-adhesive portion 32 to which no adhesive is applied.

  In such a configuration, the non-adhesive portion 32 of the adhesive sheet 30 and the fixed contact of the switch board are arranged for the air inflow / outflow of the lower part of the contact plate accompanying the pressing operation of the contact plate and the pressing release operation. Since it is performed via the air escape part formed between the surface parts, smooth operation of the contact plate can be realized. Moreover, since the sealing structure is formed by the pressure-sensitive adhesive sheet 30 and the switch substrate to which the pressure-sensitive adhesive sheet 30 is attached, it is possible to ensure an excellent dustproof function without the possibility of dust entering from the outside.

  However, in the case where the adhesive sheet 30 is configured as shown in FIG. 6, the radial width of the annular non-adhesive portion 32 in order to allow the inflow and outflow of air accompanying the pressing operation of the contact plate and the pressing release operation. The dimensions must be set relatively large. Accordingly, when the pressure-sensitive adhesive sheet 30 is formed so that the outer diameter of the non-adhesive portion 32 is increased and a sufficient bonding allowance for bonding to the switch substrate, that is, a pressure-sensitive adhesive application region is secured, As a result, the size of the apparatus is increased.

  The present invention has been made from the actual state of the above-described prior art, and an object of the present invention is to provide a switch device and a switch device component capable of ensuring an excellent dustproof function for a contact portion and setting an adhesive sheet to a relatively small shape and size. Is to provide.

  In order to achieve the above object, the switch device of the present invention is a switch device comprising a switch substrate having a fixed contact, and an adhesive sheet provided with a contact plate that can be contacted and separated from the fixed contact. The adhesive sheet is provided with a non-adhesive portion that extends in a direction away from the center portion of the contact plate and is not coated with an adhesive, the surface portion on which the fixed contact of the switch substrate is disposed, and the non-adhesive portion of the adhesive sheet An air escape portion communicating with the contact plate is formed between the first and second portions.

  In the present invention configured as described above, when the portion of the adhesive sheet to which the contact plate is attached is pressed, the contact plate comes into contact with the fixed contact of the switch substrate and the switch is turned on. Further, when the pressing force applied to the contact plate is removed, the contact plate is separated from the fixed contact and switched off.

  During the pressing operation and the releasing operation of the contact plate, the air in the lower portion of the contact plate is formed by the non-adhesive portion of the adhesive sheet and the surface portion on which the fixed contact of the switch board is disposed, The air escapes into and out of the air. Thereby, smooth operation of a contact plate is realizable. Moreover, since the contact portion has a sealed structure, an excellent dustproof function for the contact portion can be secured.

  And in particular, since the adhesive sheet is provided with a non-adhesive part extending in a direction away from the center part of the contact plate, the dead space formed along with the shape of the adhesive sheet is formed into a region where the non-adhesive part is formed. Can be used as Therefore, since the non-adhesive portion and the contact plate are communicated with each other, the shape and size of the non-adhesive portion formed around the contact plate can be reduced. Thereby, an adhesive sheet can be set to a comparatively small shape dimension.

  In the switch device of the present invention, in the switch device, the pressure-sensitive adhesive sheet is formed in a shape having two sides extending in at least one pair of intersecting directions, and the corner is sandwiched between the two sides. A non-adhesive part is provided.

  The present invention configured as described above can utilize the corner sandwiched between two sides forming the dead space as a formation region of the non-adhesive part, and contributes to reducing the shape dimension of the adhesive sheet.

  The switch device of the present invention is characterized in that, in the switch device, the adhesive sheet is formed in a substantially rectangular shape, and the non-adhesive portion is provided in each of a plurality of corners.

  In the present invention configured as described above, a plurality of corners among the four corners of the pressure-sensitive adhesive sheet can be used as a non-adhesive portion forming region. Moreover, since an air escape part is disperse | distributed to the part of a some non-adhesion part, the shape dimension of an adhesive sheet can be made smaller.

  The switch device according to the present invention is characterized in that, in the switch device, the non-adhesive portion is provided in each of at least a pair of corner portions facing each other with the contact plate interposed therebetween.

  In the present invention configured as described above, air escape portions are formed in the portions of the non-adhesive portions provided in each of at least a pair of opposite corner portions, so that the air accompanying the pressing operation of the contact plate and the pressing release operation The inflow / outflow amount of air with respect to the escape portion can be made uniform in both directions sandwiching the contact plate, and smoother operation of the contact plate can be realized.

  Further, the switch device of the present invention, in the switch device, the adhesive sheet is composed of a cover sheet that covers a contact portion including a fixed contact provided on the switch board, and a spacer sheet bonded to the cover sheet, The spacer sheet includes a housing portion in which the contact plate is housed and the non-adhesive portion formed in communication with the housing portion.

  The present invention configured as described above is good because the contact plate is accommodated in the spacer sheet accommodating portion, and the periphery of the contact plate is not restrained by the cover sheet during the pressing operation and the releasing operation of the contact plate. An operational feeling is obtained.

  In the switch device of the present invention, in the switch device, the adhesive sheet includes a cover sheet that covers a contact portion including a fixed contact provided in the switch board, and the non-adhesive portion is provided on the cover sheet. It is characterized by.

  According to the present invention configured as described above, the cover sheet and the switch substrate can form a sealed structure that realizes a smooth operation of the contact plate, so that the apparatus can be thinned.

  In order to achieve the above object, the switch device component of the present invention includes a contact plate that can contact the switch substrate of the switch device having a fixed contact, and includes an adhesive sheet that is attached to the switch substrate. The pressure-sensitive adhesive sheet is provided with a non-adhesive portion that communicates with the contact plate and extends away from the center of the contact plate and is not coated with a pressure-sensitive adhesive.

  In the present invention configured as described above, the adhesive sheet is attached to a switch board having a fixed contact, so that the contact plate is disposed between the surface part where the fixed contact of the switch board is disposed and the non-adhesive part of the adhesive sheet. A communicating air escape portion can be formed. As described above, when the present invention is attached to the switch board, the air below the contact plate can flow into and out of the air escape portion in accordance with the pressing operation and the pressing release operation of the contact plate. That is, since the contact portion including the fixed contact provided on the switch board is in a sealed state, it contributes to securing an excellent dustproof function for the contact portion.

  And in particular, since the adhesive sheet is provided with a non-adhesive part extending in a direction away from the center part of the contact plate, the dead space formed along with the shape of the adhesive sheet is formed into a region where the non-adhesive part is formed. Can be used as Therefore, since the non-adhesive portion and the contact plate are communicated with each other, the shape and size of the non-adhesive portion formed around the contact plate can be reduced. Thereby, an adhesive sheet can be set to a comparatively small shape dimension.

  Moreover, the switch device component of the present invention is characterized in that the switch device component includes a peeling sheet bonded to the adhesive sheet.

  In the present invention configured as described above, the peeling sheet is peeled off when the adhesive sheet is attached to the switch substrate. Therefore, until the adhesive sheet is attached to the switch substrate, the peeling sheet functions as a protective member for the adhesive sheet. Moreover, the convenience of handling can be ensured.

  In addition, the switch device component of the present invention is the above switch device component, wherein the adhesive sheet is formed in a shape having at least one pair of two sides extending in a direction intersecting each other and sandwiched between the two sides. The non-adhesive portion is provided at the corner.

  The present invention configured as described above can utilize the corner sandwiched between two sides forming the dead space as a formation region of the non-adhesive part, and contributes to reducing the shape dimension of the adhesive sheet.

  The switch device component of the present invention is characterized in that, in the switch device component, the adhesive sheet is formed in a substantially rectangular shape, and the non-adhesive portion is provided in each of a plurality of corners.

  In the present invention configured as described above, a plurality of corners of the four corners of the pressure-sensitive adhesive sheet can be used as a non-adhesive portion forming region. In addition, since the air escape portions formed when the adhesive sheet is attached to the switch substrate are distributed in the plurality of non-adhesive portions, the shape and size of the adhesive sheet can be further reduced.

  The switch device component according to the present invention is characterized in that, in the switch device component, the non-adhesive portion is provided in each of at least a pair of corner portions facing each other with the contact plate interposed therebetween.

  In the present invention configured as described above, when the adhesive sheet is attached to the switch board, air escape portions are formed in the non-adhesive portions provided in each of at least a pair of opposing corner portions. The amount of air flowing into and out of the air escape portion that accompanies the pressing operation of the plate and the pressing release operation can be made uniform in both directions across the contact plate, and a smoother operation of the contact plate can be realized.

  The switch device component of the present invention is the switch device component, wherein the adhesive sheet covers a contact portion including a fixed contact provided in the switch device, and a spacer sheet bonded to the cover sheet. The spacer sheet is characterized in that it includes a housing portion in which the contact plate is housed and the non-adhesive portion formed in communication with the housing portion.

  In the present invention configured as described above, since the contact plate is accommodated in the accommodating portion of the spacer sheet, when the adhesive sheet composed of the spacer sheet and the cover sheet is attached to the switch substrate, the pressing operation of the contact plate, In addition, the peripheral edge of the contact plate is not restrained by the cover sheet during the pressing release operation, and a good operation feeling can be obtained.

  The switch device component of the present invention is the above switch device component, wherein the adhesive sheet is a cover sheet covering a contact portion including a fixed contact provided in the switch device, and the non-adhesive portion is provided on the cover sheet. It is characterized by providing.

  In the present invention configured as described above, when the cover sheet is attached to the switch board, the cover sheet and the switch board can form a sealed structure that realizes smooth operation of the contact plate. The switch device can be made thin.

  The switch device of the present invention, the adhesive sheet is provided with a non-adhesive portion extending in a direction away from the center portion of the contact plate, and between the non-adhesive portion and the surface portion where the fixed contact of the switch substrate is disposed, Since the air escape portion communicating with the contact plate is formed, an excellent dustproof function for the contact portion including the fixed contact of the switch substrate can be secured. In particular, since the dead space of the pressure-sensitive adhesive sheet can be used as a non-adhesive portion forming region for creating an air escape portion, the pressure-sensitive adhesive sheet can be set to a relatively small shape. Thereby, size reduction of an apparatus is realizable.

  In addition, the switch device component of the present invention is provided with a non-adhesive portion that communicates with the contact plate and extends away from the center portion of the contact plate. When affixed to a switch board equipped with a non-adhesive part and an air escape part where the contact plate communicates can be formed between the non-adhesive part and the surface part on which the fixed contact of the switch board is arranged, the switch board can be fixed. Contributes to securing an excellent dust-proof function for contact parts that include contacts. In particular, since the dead space of the pressure-sensitive adhesive sheet can be used as a non-adhesive portion forming region for creating an air escape portion, the pressure-sensitive adhesive sheet can be set to a relatively small shape. Thereby, it contributes to realization of miniaturization of the switch device manufactured by sticking an adhesive sheet.

  The best mode for carrying out the switch device and the switch device component according to the present invention will be described below with reference to the drawings.

  FIG. 1 is an exploded perspective view showing an embodiment of a switch device component constituting a main part of an embodiment of a switch device according to the present invention, and FIG. 2 shows a main part of the switch device according to an embodiment of the present invention. FIG. 3 is a rear view showing a state in which the peeling sheet and the protective sheet are removed from one embodiment of the component for the switch device, and FIG. 3 is one of the component for the switch device constituting the main part of one embodiment of the switch device according to the present invention. FIG. 4 is a longitudinal sectional view showing an embodiment of a switch device according to the present invention.

[Basic Configuration of One Embodiment of Switch Device According to the Present Invention]
First, a basic configuration of an embodiment of the switch device of the present invention will be described based on FIG. As shown in FIG. 4, the present embodiment includes a central fixed contact 7 and a peripheral fixed contact 8 arranged so as to surround the central fixed contact 7 on a switch substrate, for example, a printed circuit board 6.

  A spacer sheet 2 is bonded on the printed circuit board 6, and a cover sheet 1 is bonded on the spacer sheet 2. A contact plate, for example, a dome-shaped movable contact 3 is attached to the back surface 1 a of the cover sheet 1. The peripheral edge of the dome-shaped movable contact 3 is always in contact with the peripheral fixed contact 8 of the printed circuit board 6. By pressing the dome-shaped movable contact 3, the dome-shaped movable contact 3 is reversed and comes into contact with the central fixed contact 7, and by pressing the dome-shaped movable contact 3, the dome-shaped movable contact 3 is moved to the central fixed contact 7. It has come away from.

[Configuration of One Embodiment of Switch Device Parts Provided in One Embodiment of Switch Device of the Present Invention]
FIG. 1 and FIG. 3 show an embodiment of the switch device component according to the present invention before being bonded to the printed circuit board 6. In addition to the spacer sheet 2 and the dome-shaped movable contact 3, a peeling sheet 4 and a protective sheet 5 are included. FIG. 2 shows a state in which the tension sheet 4 and the protective sheet 5 are peeled off in the embodiment of the switch device component described above.

  As shown in FIGS. 1 and 3, in one embodiment of this switch device component, a cover sheet 1 covering a contact portion including a dome-shaped movable contact 3, a central fixed contact 7, and a peripheral fixed contact 8 is arranged at the top. The pressure-sensitive adhesive is applied to the entire back surface 1a of the cover sheet 1. A dome-shaped movable contact 3 is bonded to the back surface 1 a of the cover sheet 1. The cover sheet 1 is formed in a substantially rectangular shape, for example.

  As shown in FIG. 1, the outer shape of the spacer sheet 2 bonded to the back surface 1 a of the cover sheet 1 is set to the same shape and dimension as the cover sheet 1. The spacer sheet 2 is formed with a circular accommodating portion 2a in which the dome-shaped movable contact 3 is accommodated in the central portion. In addition, a plurality of corners formed between two sides extending in a direction intersecting each other, for example, corresponding corners of the four corners 2B, 2C, 2D, and 2E, communicate with the accommodating portion 2a, and adhere to each other. Non-adhesive portions 2b, 2c, 2d, and 2e to which no agent is applied are formed, respectively.

  The non-adhesive part 2b and the non-adhesive part 2d are provided at each of a pair of corners 2b and 2d facing each other with the dome-shaped movable contact 3 bonded to the cover sheet 1 interposed therebetween. The part 2e is provided in each of another pair of corners 2C and 2E that face each other with the dome-shaped movable contact 3 bonded to the cover sheet 1 interposed therebetween.

  Each of the four non-adhesive portions 2b, 2c, 2d, and 2e is connected to the dome-shaped movable contact 3. That is, these non-adhesive parts 2b to 2e extend radially in a direction away from the center of the dome-shaped movable contact 3 accommodated in the accommodating part 2a, and are formed in a rectangular shape, for example.

  The accommodating portion 2a and the non-adhesive portions 2b to 2e of the spacer sheet 2 are formed by punching, for example. Moreover, the adhesive is apply | coated to the remaining surfaces of the back surface 2f of the spacer sheet | seat 2 except these accommodating parts 2a and non-adhesive parts 2b-2e.

  In one embodiment of the switch device component according to the present invention, the cover sheet 1 and the spacer sheet 2 described above constitute an adhesive sheet that is attached to the printed circuit board 6.

  The peeling sheet 4 that is bonded to the back surface 2f of the spacer sheet 2 and is peeled off when the adhesive sheet composed of the cover sheet 1 and the spacer sheet 2 is bonded to the printed circuit board 6 is formed to have the same shape and dimensions as the spacer sheet 2, for example. It is. That is, the peeling sheet 4 has a circular hole portion 4a in which the dome-shaped movable contact 3 is accommodated in the central portion, and the circular hole portion 4a is formed in the same shape and dimension as the accommodating portion 2a of the spacer sheet 2. Further, each of the four corners 4B to 4E of the peeling sheet 4 has gaps 4b to 4e that communicate with the circular hole 4a and extend radially in a direction away from the center of the circular hole 4a. Yes. These gap portions 4b to 4e are also formed in the same shape and dimension as the corresponding ones of the non-adhesive portions 2b to 2e of the spacer sheet 2.

  An adhesive is applied to the remaining surface of the back surface 4f excluding the circular hole 4a and the gaps 4b to 4e of the peel sheet 4. Further, each of the circular hole 4a and the gaps 4b to 4e of the peeling sheet 4 is also formed by punching, for example.

  In one embodiment of the switch device component shown in FIGS. 1 and 3, the protective sheet 5 disposed at the bottom is bonded to the back surface 4 f of the peeling sheet 4. This protective sheet 5 is formed in the same shape and dimension as the cover sheet 1, for example. The protective sheet 5 and the peeler sheet 4 protect the adhesive sheet composed of the cover sheet 1 and the spacer sheet 2 to which the dome-shaped movable contact 3 is attached. Moreover, the convenience of handling can be ensured by providing the protective sheet 5 and the peeling sheet 4.

  When the cover sheet 1 and the spacer sheet 2 to which the dome-shaped movable contact 3 is attached are bonded to the printed circuit board 6 shown in FIG. 4, the protective sheet 5 and the peeling sheet 4 are peeled off as shown in FIG. The back surface 2f of the spacer sheet 2 in the state of being adhered to the surface is adhered to the surface portion on which the central fixed contact 7 and the peripheral fixed contact 8 of the printed board 6 are disposed.

  Thus, in the state where the cover sheet 1 and the spacer sheet 2 to which the dome-shaped movable contact 3 is attached are bonded to the printed circuit board 6, as shown in FIG. A first air escape portion 9 formed by the cover sheet 1 and the surface portion of the printed circuit board 6 is formed. Further, outside the first air escape portion 9, the first air escape portion 9 communicates with the first air escape portion 9 and is formed by the cover sheet 1, the non-adhesive portions 2 b to 2 e of the spacer sheet 2, and the printed circuit board 6. Two air escape portions 10 are formed.

[Operation of One Embodiment of Switch Device According to the Present Invention]
In an embodiment of the switch device according to the present invention configured as shown in FIG. 4, when the portion of the cover sheet 1 to which the dome-shaped movable contact 3 is attached is pressed, the dome-shaped movable contact 3 becomes the printed circuit board 6. Contact the central fixed contact 7. As a result, the central fixed contact 7 and the peripheral fixed contact 8 are conducted through the dome-shaped movable contact 3 and switched on. When the pressing force applied to the dome-shaped movable contact 3 is removed, the dome-shaped movable contact 3 is separated from the central fixed contact 7, and the central fixed contact 7 and the peripheral fixed contact 8 are cut off and switched off.

  During the above-described operation, the air in the lower portion of the dome-shaped movable contact 3 due to the pressing of the dome-shaped movable contact 3 is caused by a gap formed between the peripheral edge of the dome-shaped movable contact 3 and the peripheral fixed contact 8. The air escapes to the first air escape portion 9 and further escapes to the second air escape portion 10. On the contrary, as the dome-shaped movable contact 3 is pressed and released, the air in the second air escape portion 10 flows between the peripheral edge of the dome-shaped movable contact 3 and the peripheral fixed contact 8 via the first air escape portion 9. It is led from the gap formed between them to the lower part of the dome-shaped movable contact 3.

[Effect of One Embodiment of Switch Device According to the Present Invention]
As described above, according to an embodiment of the switch device of the present invention, the air in the lower part of the dome shaped movable contact 3 is escaped from the first air during the pressing operation and the releasing operation of the dome shaped movable contact 3. It flows into and out of the portion 9 and the second air escape portion 10. Thereby, since the contact part including the dome-shaped movable contact 3, the center fixed contact 7 and the peripheral fixed contact 8 has a sealed structure covered with the cover sheet 1, an excellent dustproof function for the contact part can be secured. .

  And especially one Embodiment of the switch apparatus of this invention provided the non-adhesive part 2b-2e extended in the direction away from the center part of the movable contact 3 in the spacer sheet | seat 2 which comprises an adhesive sheet, The four corners 2 </ b> B to 2 </ b> E that become the dead space of the spacer sheet 2 can be used as regions where the non-adhesive portions 2 b to 2 e for forming the second air escape portion 10 are provided. Therefore, the non-adhesive portion formed in the vicinity of the peripheral portion of the dome-shaped movable contact 3 in order to allow the non-adhesive portions 2b to 2e and the dome-shaped movable contact 3 to communicate with each other, that is, the shape of the first air escape portion 9 shown in FIG. The dimensions can be reduced. Thereby, the adhesive sheet which consists of the spacer sheet 2 and the cover sheet 1 can be set to a comparatively small shape. Along with this, it is possible to reduce the size of the apparatus.

  In addition, since the four non-adhesive portions 2b to 2e are formed around the dome-shaped movable contact 3 as the non-adhesive portion to be formed on the spacer sheet 2, the air flowing in and out via the first air escape portion 9 is Since the four second air escape portions 10 are dispersed, the shape and size of the pressure-sensitive adhesive sheet including the spacer sheet 2 and the cover sheet 1 can be reduced.

Further, as described above, the spacer sheet 2 is formed with a pair of non-adhesive portions 2b and 2d and another pair of non-adhesive portions 2c and 2e so as to sandwich the dome-shaped movable contact 2 therebetween. A second air escape portion 10 is formed in each part of the pair of non-adhesive portions 2b and 2d or another pair of non-adhesive portions 2c and 2e. Accordingly, the second air escape portion 10 formed in the pair of non-adhesive portions 2b and 2d sandwiching the dome-shaped movable contact 3 is used for the amount of air flowing in and out due to the pressing operation of the dome-shaped movable contact 3 and the pressure releasing operation. It is possible to equalize both directions in between, or in both directions between the second air escape portions 10 formed in the pair of non-adhesive portions 2c and 2e sandwiching the dome-shaped movable contact 3. Also by this, smooth operation of the dome-shaped movable node 3 can be realized.

  Further, since the dome-shaped movable contact 3 is accommodated in the accommodating portion 2a of the spacer sheet 2, the periphery of the dome-shaped movable contact 3 is restrained by the cover sheet 1 when the dome-shaped movable contact 3 is pressed and released. Therefore, a good operation feeling can be obtained.

[Effects of an embodiment of a switch device component according to the present invention]
As described above, according to one embodiment of the switch device component of the present invention, the adhesive sheet composed of the cover sheet 1 and the spacer sheet 2 is attached to a printed circuit board having the central fixed contact 7 and the peripheral fixed contact 8. The second air escape portion 10 communicating with the dome-shaped movable contact 3 is formed between the surface portion where the fixed contacts 7 and 8 of the printed circuit board 6 are disposed and the non-adhesive portions 2 b to 2 e of the spacer sheet 2. Can do. Thus, when the pressure-sensitive adhesive sheet is attached to the printed circuit board 6, the air below the dome-shaped movable contact 3 is changed to the second air described above along with the pressing operation and the pressing release operation of the dome-shaped movable contact 3. The escape portion 10 can be made to flow in and out. That is, this contributes to the smooth operation of the dome-shaped movable node 3. Further, since the contact portion including the fixed contacts 7 and 8 provided on the printed circuit board 6 has a sealed structure, it contributes to securing an excellent dustproof function for the contact portion.

  In particular, according to one embodiment of the switch device component of the present invention, as described above, the spacer sheet 2 constituting the adhesive sheet extends in the direction away from the center of the movable contact 3 to the non-adhesive part 2b to 2b. Since the 2e is provided, the four corners 2B to 2E which become the dead space of the spacer sheet 2 can be utilized as a region where the non-adhesive parts 2b to 2e for forming the second air escape part 10 are provided. Therefore, the non-adhesive portion formed in the vicinity of the peripheral portion of the dome-shaped movable contact 3 in order to allow the non-adhesive portions 2b to 2e and the dome-shaped movable contact 3 to communicate with each other, that is, the shape of the first air escape portion 9 shown in FIG. The dimensions can be reduced. Thereby, the adhesive sheet which consists of the spacer sheet 2 and the cover sheet 1 can be set to a comparatively small shape. In connection with this, it contributes to realization of size reduction of the switch apparatus provided with the switch apparatus component of this invention.

  Further, according to one embodiment of the switch device component of the present invention, the protective sheet 5 and the peeling sheet 4 are peeled off when an adhesive sheet comprising the cover sheet 1 and the spacer sheet 2 is attached to the printed circuit board 6. Yes. Therefore, the protective sheet 5 and the peeling sheet 4 function as protective members for the adhesive sheet until the adhesive sheet is attached to the printed circuit board 6. Moreover, the convenience of handling can be ensured by the protective sheet 5 and the peeling sheet 4.

  Further, the four corners 2B to 2E of the spacer sheet 2 constituting the adhesive sheet can be used as the formation area of the non-adhesive parts 2b to 2e. Moreover, since the 2nd air escape part 10 formed when an adhesive sheet is affixed on the printed circuit board 6 is disperse | distributed to four parts, the shape dimension of an adhesive sheet can be made smaller.

  In addition, when the adhesive sheet composed of the cover sheet 1 and the spacer sheet 2 is attached to the printed circuit board 6, the pair of non-adhesive portions 2 b and 2 d and another pair of non-adhesive so as to sandwich the dome-shaped movable contact 2. The portions 2c and 2e are formed, and the second air escape portion 10 is formed in each of the pair of non-adhesive portions 2b and 2d or another pair of non-adhesive portions 2c and 2e. Therefore, as described above, the inflow / outflow amount of the air accompanying the pressing operation and the pressing release operation of the dome-shaped movable contact 3 is formed in the pair of non-adhesive portions 2b and 2d between which the dome-shaped movable contact 3 is sandwiched. 2 equal to both directions between the air escape portions 10 or both directions between the second air escape portions 10 formed at the pair of non-adhesive portions 2c and 2e sandwiching the dome-shaped movable contact 3 can do. Also by this, smooth operation of the dome-shaped movable node 3 can be realized.

  Further, when the adhesive sheet composed of the cover sheet 1 and the spacer sheet 2 is attached to the printed circuit board 6, the peripheral edge of the dome-shaped movable contact 3 is covered by the cover sheet 1 when the dome-shaped movable node 3 is pressed and released. Is not restrained, and a good operation feeling can be obtained.

[Other Embodiments]
In the above-described embodiment of the switch device and the switch device component according to the present invention, the spacer sheet 2 is provided between the cover sheet 1 and the printed board 6. It may be omitted and the cover sheet 1 may be provided with a non-adhesive part. In this configuration, the space formed by the non-adhesive portion of the cover sheet 1 and the printed circuit board 6 becomes an air escape portion associated with the operation of the dome-shaped movable contact 3. With such a configuration, it is possible to realize a thin switch device to which the adhesive sheet of the switch device component is attached.

  Moreover, in one embodiment of the switch device of the present invention described above and one embodiment of the switch device component, the shape of the adhesive sheet constituted by the cover sheet 1 and the spacer 2 is set to a rectangular shape. The present invention is not limited to the rectangular shape as described above. You may set so that it may become a substantially rectangular shape. In addition, for example, the shape may include only one set or two or more sets of two sides extending in a direction intersecting each other. Even in such a case, the portion of the adhesive sheet that is a corner formed between the two sides A non-adhesive portion may be provided on the air-releasing portion to form an air escape portion.

  In one embodiment of the switch device of the present invention and one embodiment of the switch device component, the non-adhesive portions 2b to 2e are provided in all of the four corner portions 2B to 2E of the rectangular spacer sheet 2. Thus, although the four second air escape portions 10 are formed, the present invention is not limited to such a configuration. That is, a non-adhesive portion for forming the second air escape portion 10 may be provided only at two or three corners, or only at one corner.

  In one embodiment of the switch device of the present invention and one embodiment of the switch device component described above, a pair of non-adhesive portions 2b, 2d disposed so as to sandwich the dome-shaped movable contact 3 between the spacer sheet 2 Although another pair of non-adhesive portions 2c and 2e is provided, the present invention is not limited to such a configuration in which two pairs of non-adhesive portions are provided. That is, three or more pairs of non-adhesive portions may be provided, or only a pair of non-adhesive portions may be provided.

It is a disassembled perspective view which shows one Embodiment of the components for switch apparatuses which comprise the principal part of one Embodiment of the switch apparatus which concerns on this invention. It is a back view which shows the state which removed the peeling sheet | seat and the protection sheet from one Embodiment of the components for switch devices which comprise the principal part of one Embodiment of the switch apparatus which concerns on this invention. It is a longitudinal cross-sectional view which shows one Embodiment of the components for switch apparatuses which comprise the principal part of one Embodiment of the switch apparatus which concerns on this invention. It is a longitudinal cross-sectional view which shows one Embodiment of the switch apparatus which concerns on this invention. It is a disassembled perspective view which shows the conventional switch apparatus. It is a figure which shows the structure of the adhesive sheet considered from the actual condition of a prior art.

Explanation of symbols

1 Cover sheet (adhesive sheet)
1a Back 2 Spacer sheet (adhesive sheet)
2a accommodating portion 2B corner 2b non-adhesive portion 2C corner 2c non-adhesive portion 2D corner 2d non-adhesive portion 2E corner 2e non-adhesive portion 2f back surface 3 dome-shaped movable contact (contact plate)
4 peeling sheet 4a circular hole portion 4B corner portion 4b gap portion 4C corner portion 4c gap portion 4D corner portion 4d gap portion 4E corner portion 4e gap portion 4f back surface 5 protective sheet 6 printed circuit board (switch substrate)
7 Central fixed contact 8 Peripheral fixed contact 9 First air escape portion 10 Second air escape portion

Claims (13)

A switch device comprising a switch board having a fixed contact, and an adhesive sheet provided with a contact plate that can be contacted and separated from the fixed contact.
The adhesive sheet is provided with a non-adhesive portion that extends in a direction away from the center of the contact plate and is not coated with an adhesive.
An air escape portion communicating with the contact plate is formed between a surface portion of the switch substrate on which the fixed contact is disposed and the non-adhesive portion of the adhesive sheet. The switch device according to claim 1,
A switch device, wherein the pressure-sensitive adhesive sheet is formed into a shape having at least one pair of two sides extending in a direction intersecting each other, and the non-adhesive portion is provided at a corner sandwiched between the two sides. In the switch device according to claim 2,
A switch device, wherein the adhesive sheet is formed in a substantially rectangular shape, and the non-adhesive part is provided in each of a plurality of corners. In the switch device according to claim 3,
The switch device, wherein the non-adhesive portion is provided in each of at least a pair of corner portions facing each other with the contact plate interposed therebetween. In the switch device according to any one of claims 1 to 4,
The adhesive sheet is composed of a cover sheet that covers a contact portion including a fixed contact provided in the switch board, and a spacer sheet that is bonded to the cover sheet.
The switch device, wherein the spacer sheet includes an accommodating portion in which the contact plate is accommodated and the non-adhesive portion formed in communication with the accommodating portion. In the switch device according to any one of claims 1 to 4,
The switch device, wherein the adhesive sheet is a cover sheet that covers a contact portion including a fixed contact provided on the switch board, and the non-adhesive portion is provided on the cover sheet. It has a contact plate that can contact the switch board of the switch device having a fixed contact, and includes an adhesive sheet that is attached to the switch board.
A switch device component comprising: a non-adhesive portion which is connected to the contact plate and extends in a direction away from a center portion of the contact plate and to which an adhesive is not applied. In the switch device component according to claim 7,
A switch device component comprising a peeling sheet bonded to the pressure-sensitive adhesive sheet. In the switch device component according to claim 7,
For the switch device, wherein the pressure-sensitive adhesive sheet is formed into a shape having at least one pair of two sides extending in a direction intersecting each other, and the non-adhesive portion is provided at a corner sandwiched between the two sides. parts. In the switch device component according to claim 9,
A switch device component, wherein the pressure-sensitive adhesive sheet is formed in a substantially rectangular shape, and the non-adhesive portion is provided at each of a plurality of corners. In the switch device component according to claim 10,
A component for a switch device, wherein the non-adhesive portion is provided in each of at least a pair of corner portions facing each other with the contact plate interposed therebetween. In the switch device component according to any one of claims 7 to 11,
The adhesive sheet comprises a cover sheet that covers a contact portion including a fixed contact provided in the switch device, and a spacer sheet that is bonded to the cover sheet,
A component for a switch device, wherein the spacer sheet includes an accommodating portion in which the contact plate is accommodated and the non-adhesive portion formed in communication with the accommodating portion. In the switch device component according to any one of claims 7 to 11,
A switch device part comprising the cover sheet covering a contact portion including a fixed contact provided in the switch device, wherein the non-adhesive portion is provided on the cover sheet.

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