JP4251012B2 - Method for sticking sheet member to movable contact body series - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is used for operation panels of various electronic devices, and movable contact bodies that constitute a plurality of switches by being combined with fixed contacts arranged on a wiring board are arranged at a predetermined pitch on a belt-like carrier sheet. The present invention relates to a method for sticking a sheet member to a movable contact body series.
[0002]
[Prior art]
In recent years, various electronic devices have been reduced in size, weight and price, and as a switch mounted on them, a movable contact body holding a plurality of movable contacts on a base sheet made of an insulating film is fixed. A configuration in which a panel switch is configured in combination with a wiring board on which contacts are arranged has been often used.
[0003]
As a supply form of the movable contact body, a movable contact body structure constituted by regularly arranging the movable contact body at a predetermined pitch on a belt-shaped transport body is continuously produced by both equipment manufacturers and component manufacturers. Is preferred and used to be possible.
[0004]
Hereinafter, a conventional movable contact body will be described with reference to FIGS.
[0005]
FIG. 8 is an external perspective view of a conventional movable contact body, and FIG. 9 is an exploded perspective view thereof.
[0006]
In the figure, 1 is a movable contact made of a thin elastic metal plate formed in a circular dome shape, and 2 is a base sheet made of an insulating film having a lower surface coated with an adhesive 2A.
[0007]
The base sheet 2 is provided with a plurality of through holes 2B into which the movable contact 1 is inserted at predetermined positions.
[0008]
Reference numeral 3 denotes a fixing tape made of a flexible insulating film having an adhesive 3A applied to the lower surface, and is disposed in the through hole 2B of the base sheet 2 at the center position of the adhesive 3A on the lower surface. The movable contact 1 is individually adhered and held, and the outer peripheral portion of the adhesive 3A on the lower surface is attached to the upper surface of the base sheet 2 so as to cover the through hole 2B.
[0009]
As shown in FIG. 10, the movable contact 1 is provided with a central hole 1 </ b> A at the center for improving contact stability, and the movable contact 1 and the movable contact 1 are closed so as to close the central hole 1 </ b> A. Between the fixing tape 3, a thin strip-like insulating tape 5 without an adhesive is disposed, and the adhesive 3 A of the fixing tape 3 passes through the central hole 1 A of the movable contact 1 and enters the movable contact 1. There is no configuration.
[0010]
In this manner, each movable contact 1 is held at a predetermined position with respect to the base sheet 2, and the movable contact body 7 is configured.
[0011]
As shown in FIG. 11, the movable contact body 7 having the above-described structure is a band-shaped carrier made of an insulating film or the like by the adhesive 2A on the bottom surface of the base sheet 2 in order to improve handling and handling during transportation and transportation. In many cases, the sheet is regularly arranged and pasted on the sheet 4 at a predetermined pitch to form a movable contact body.
[0012]
When the movable contact body 7 is used, the individual movable contact bodies 7 are peeled off from the carrier sheet 4 of the movable contact body series, and wiring boards (not shown) of various electronic devices are used with the adhesive 2A on the lower surface of the base sheet 2. ) And the movable contact body 7 is pasted and used.
[0013]
As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
[0014]
[Patent Document 1]
Japanese Patent Laid-Open No. 7-320591
[Problems to be solved by the invention]
However, as shown in FIG. 12A, the movable contact body 7 configured in the conventional movable contact body series has a slight amount of adhesive that does not intervene between the strip-shaped insulating tape 5 and the base sheet 2. As shown in FIG. 12 (b), the peripheral portion of the fixing tape 3 is firmly adhered to the base sheet 2 so that dust does not enter the contact side in the movable contact 1 through the gap G. Therefore, it is necessary to manage to improve the dust-proof and drip-proof property of the movable contact 1.
[0016]
As an improvement measure, as shown in FIG. 13, each dustproof sheet 6 is manually affixed to the upper surface of the base sheet 2 of the movable contact body 7 so as to cover the outer peripheral portion of the fixing tape 3. Although there was also an improvement, there was a problem that work efficiency was remarkably deteriorated because there was no method of sticking the dustproof sheet 6 continuously to the movable contact body series.
[0017]
The present invention solves such a conventional problem, and a dust-proof sheet for improving the dust-proof and drip-proof property of the movable contact body can be applied to each movable contact body efficiently and continuously. Attaching the sheet member to the movable contact body series that can obtain the movable contact body series in which the individual movable contact bodies in the form in which the upper gap is covered with the dustproof sheet are arranged at a predetermined pitch on the carrier sheet It aims to provide a method.
[0018]
[Means for Solving the Problems]
In order to achieve the above object, the present invention has the following configuration.
[0019]
According to the first aspect of the present invention, each movable contact body configured by holding a dome-shaped movable contact on a base sheet is connected to a movable contact body series arranged at a predetermined pitch on a belt-like carrier sheet. In contrast, a protective sheet provided with a first pressure-sensitive adhesive on the lower surface thereof, which is stacked above the release-treated separator, and further above the protective sheet than the peeling force between the first pressure-sensitive adhesive and the separator. A three-layer pre-sheet comprising a stack of two-layer pre-sheets in the order of an oversheet provided with a second pressure-sensitive adhesive having a strong peeling force on the lower surface is prepared. Part shape of the outline constituting the dustproof sheet set to the outer shape covering the upper side of the individual movable contact bodies from the upper surface of the layer pre-sheet to the oversheet, the protective sheet, and the first and second adhesives Cutting Subjected to engineering in the arrangement pitch of the movable contact, further, a cutting of the remaining shaped portion of the outline constituting the outer shape of the dust-proof sheet from said three-layer Pureshito lower surface to the separator and the protective sheet and the second pressure-sensitive adhesive After applying at the same pitch, and then peeling off the separator to form a two-layer pre-sheet in the second step, and pasting the two-layer pre-sheet on the upper side of the movable contact body with the first adhesive , The dustproof sheet cut into pieces corresponding to the individual movable contact bodies by peeling off the oversheet and the part other than the dustproof sheet processed and formed in the protective sheet. Are individually attached to and attached to the upper surface of the movable contact body, and the individual movable contact bodies in the form in which the upper gap is covered with the dustproof sheet are the carrier. Is obtained by a sticking method of the sheet member to the movable contact communication can be obtained a movable contact member communicating arranged at a predetermined pitch on the over bets, dustproof for improving the dust and water resistance of the movable contact It is possible to provide a method for sticking a sheet member to a series of movable contact bodies capable of continuously and efficiently pasting sheets on individual movable contact bodies regularly arranged at a predetermined pitch on a carrier sheet. Have.
[0020]
Invention according to claim 2, in the invention according to the first aspect, the movable contact member is a dome-shaped movable contact, the structure that holds the base sheet with an adhesive provided on the lower surface of the fixing tape, dustproof The sheet covers at least the outer peripheral portion of the fixing tape and is attached to the upper surface of the base sheet, and as the pasting location of the dustproof sheet, the position covering the outer periphery of the fixing tape is specified, It has the effect that a more reliable dustproof and dripproof material can be obtained.
[0021]
The invention according to claim 3 is the invention according to claim 1, wherein the movable contact body is adhered onto the carrier sheet with an adhesive provided on the lower surface of the base sheet, and the movable contact body and the base sheet are adhered to each other. It is set so that the adhesive force to stick to the protective sheet of the second adhesive is weaker than the adhesive force to stick to the base sheet and carrier sheet of the adhesive, and in the second step, the dustproof sheet in the protective sheet When the part other than the processed sheet and the oversheet are integrally peeled from the carrier sheet, the dustproof sheet cut into individual pieces having a desired outer shape can be reliably left on the movable contact body. It has the action.
[0022]
The invention according to claim 4 is the part of the invention according to claim 1, except that the opening angle between 175 degrees and 100 degrees is maintained with respect to the carrier sheet, and the dust sheet is processed and formed in the protection sheet. When the adhesive strength of the second adhesive protective sheet is stronger than the adhesive strength of the first adhesive base sheet, etc. Even so, the above angle has an effect that the dustproof sheet cut into pieces having a desired outer shape can be left on the movable contact body in an attached state.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0024]
In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure demonstrated in the term of the prior art, and detailed description is abbreviate | omitted.
[0025]
(Embodiment)
FIG. 1 is an external perspective view of a movable contact body series in a state in which a sheet member is pasted using a method for sticking a sheet member to a movable contact body series according to an embodiment of the present invention.
[0026]
As shown in the figure, the movable contact body series formed by using the method according to the present embodiment is such that the movable contact body 7 is an adhesive on the lower surface of the base sheet 2 on the belt-like carrier sheet 4 described in the prior art. 2A, the dust-proof sheet 6 is pasted on the upper surface of each movable contact body 7 while being regularly arranged and pasted at a predetermined pitch by 2A.
[0027]
Each of the movable contact bodies 7 has the same configuration as that of the prior art, in which a plurality of movable contacts 1 that are adhesively held by a fixing tape 3 with an insulating tape 5 interposed at a predetermined position of the base sheet 2 are provided. Therefore, detailed description is omitted.
[0028]
Below, the sticking method of the dustproof sheet 6 to the movable contact body series by this invention is demonstrated using drawing.
[0029]
First, the three-layer pre-sheet 11 serving as a member for constituting the dustproof sheet 6 will be described with reference to FIG.
[0030]
FIG. 2 is a diagram showing the configuration of a three-layer pre-sheet. This three-layer pre-sheet 11 is stacked in the order of the protective sheet 9 and the over-sheet 10 in the order above the separator 8 subjected to the release treatment. Two-layer pre-sheets 12 are stacked and configured as a three-layer pre-sheet 11 as a whole.
[0031]
The protective sheet 9 includes the first adhesive 9A on the lower surface, and the oversheet 10 includes the second adhesive 10A on the lower surface.
[0032]
That is, the three-layer pre-sheet 11 is a strip-shaped sheet member that is stacked with the separator 8, the first adhesive 9A, the protective sheet 9, the second adhesive 10A, and the oversheet 10 in order from the lower layer.
[0033]
Here, the adhesive force that the second adhesive 10 </ b> A of the oversheet 10 sticks to the protective sheet 9 is the adhesive force that the first adhesive 9 </ b> A of the protective sheet 9 sticks to the upper surface of the base sheet 2 of the movable contact body 7. The adhesive 2A of the base sheet 2 is set with an adhesive strength that is weaker than the adhesive strength that sticks to the base sheet 2 or the carrier sheet 4.
[0034]
Then, as shown in FIG. 3, first, as a first step, from the upper surface of the prepared three-layer pre-sheet 11, only the oversheet 10, the second pressure-sensitive adhesive 10A, the protective sheet 9, and the first pressure-sensitive adhesive 9A are configured to have a desired outer shape. An external shape that forms a desired external shape only from the lower surface of the three-layer pre-sheet 11 only by the separator 8, the protective sheet 9, and the first adhesive 9 </ b> A by cutting a part of the external shape (the portion indicated by the solid line in the drawing). The remaining shape portion of the line (the portion indicated by the broken line in the figure) is cut.
[0035]
Note that the pitch at which the three-layer pre-sheet 11 is continuously cut is adjusted to a predetermined pitch regularly arranged on the carrier sheet 4 of the movable contact body 7.
[0036]
FIG. 4 is a cross-sectional view showing the cutting process state. When cutting a part of the outer shape line of the desired outer shape from the upper surface of the three-layer pre-sheet 11, the oversheet 10, the protective sheet 9, and their adhesives 10A And 9A are cut and the separator 8 is not cut.
[0037]
On the other hand, when the remaining outer shape of the desired outer shape is cut from the lower surface of the three-layer pre-sheet 11, only the separator 8, the protective sheet 9, and the adhesive 9A are cut, and the oversheet 10 and the second adhesive 10A are cut. It is set not to.
[0038]
In addition, only the protective sheet 9 positioned as an intermediate layer of the three-layer pre-sheet 11 and the pressure-sensitive adhesive 9A are cut along the entire outline of the desired outer shape by cutting from the upper surface and the lower surface.
[0039]
Next, as a second step, as shown in FIG. 5, the two-layer pre-sheet 12 subjected to the cutting process by continuously peeling only the lower layer separator 8 of the three-layer pre-sheet 11 subjected to the cutting process; After that, the desired outer shape portion of the protective sheet 9 is made to correspond to each movable contact body 7 arranged at a predetermined pitch on the belt-like carrier sheet 4 by the first adhesive 9A of the protective sheet 9, Paste continuously.
[0040]
Here, the portion of the protective sheet 9 that is cut by the outer shape line of the desired shape is covered with the outer peripheral portion of the fixing tape 3 that is affixed to the upper surface of the base sheet 2 of the movable contact body 7. And paste.
[0041]
In addition, you may make it affix the cut | disconnected part in the protection sheet 9 to the other upper surface position of the base sheet 2 correspondingly.
[0042]
After that, as shown in FIG. 6, in the cut two-layer pre-sheet 12, a portion of the protective sheet 9 including the first pressure-sensitive adhesive 9A other than the desired outer shape, and an unnecessary portion composed of the oversheet 10 and the second pressure-sensitive adhesive 10A Is continuously peeled off from the carrier sheet 4 so that the portions of the protective sheet 9 that are cut into individual pieces having a desired outer shape are continuously adhered individually to the upper surface of the movable contact body 7 as the dust-proof sheet 6. become.
[0043]
This is because the second adhesive 10A of the oversheet 10 adheres to the protective sheet 9 and is weaker than the adhesive force of the first adhesive 9A of the protective sheet 9 adheres to the base sheet 2 of the movable contact body 7. In addition, since the adhesive 2A of the base sheet 2 is set with an adhesive strength weaker than the adhesive strength that sticks to the base sheet 2 or the carrier sheet 4, the protective sheet 9 can be divided into a plurality of parts only by removing the unnecessary portion. The dust-proof sheet 6 that is individually affixed on the movable contact body 7 is reliably left on the upper surface of the movable contact body 7 in the affixed state.
[0044]
The dust-proof sheet 6 is sequentially affixed on the movable contact body 7 by the work of peeling off this unnecessary part, and the outer peripheral part of the fixing tape 3 is continuously manufactured with the dust-proof sheet 6 being continuously covered. It becomes.
[0045]
As described above, when the method according to the present embodiment is used, the protective sheet 9 (dustproof sheet 6) cut into a desired outer shape is formed on the upper surface of the movable contact body 7 arranged in a predetermined pitch on the belt-like carrier sheet 4. ) Can be pasted continuously.
[0046]
Then, the dustproof sheet 6 is attached to the fixing tape 3 by holding the movable contact 1 and covering the outer peripheral portion of the fixing tape 3 attached to the upper surface of the base sheet 2 in a close contact state. The movable contact body 7 that can close a small gap caused by the thin strip-like insulating tape 5 interposed between the base sheet 2 and the dust- and drip-proof property remains connected to the movable contact body. it can.
[0047]
In addition, since the dustproof sheet 6 can be continuously pasted to the movable contact body 7 including the above-mentioned position while the movable contact body is connected, the work is significantly more than when the conventional dustproof sheet 6 is pasted. It will be excellent in efficiency.
[0048]
In addition, the part other than the desired external shape of the protective sheet 9 of the cut two-layer pre-sheet 12 and the oversheet 10 are integrally peeled off from the carrier sheet 4 to leave the dustproof sheet 6 on the movable contact body 7. In some working processes, it is possible even under conditions different from those described above.
[0049]
That is, in the case described above, the adhesive force that the second adhesive 10 </ b> A of the oversheet 10 adheres to the protective sheet 9 is the same as that of the first adhesive 9 </ b> A of the protective sheet 9 applied to the base sheet 2 of the movable contact body 7. This is an explanation of the case where the adhesive strength is weaker than the adhesive strength to which the adhesive 2A of the base sheet 2 adheres to the base sheet 2 or the carrier sheet 4.
[0050]
On the other hand, as shown in FIG. 7, the part other than the desired outer shape including the first adhesive 9A of the protective sheet 9 of the cut two-layer pre-sheet 12 and the oversheet 10 and the second adhesive 10A are integrated, If the carrier sheet 4 is peeled off while maintaining an opening angle θ between 175 degrees and 100 degrees, the adhesive force to adhere to the protective sheet 9 of the second adhesive 10A of the oversheet 10 is 9 is stronger than the adhesive force that the first adhesive 9A sticks to the base sheet 2 of the movable contact body 7, and more than the adhesive force that the adhesive 2A of the base sheet 2 sticks to the base sheet 2 or the carrier sheet 4 A protective sheet 9 (dust-proof sheet 6) that is cut into individual pieces having a desired outer shape without the movable contact body 7 being peeled off from the carrier sheet 4 is included on the upper surface of the movable contact body 7 including the case where it is strong. Continue to be able to to remain individually residual state.
[0051]
【The invention's effect】
As described above, in manufacturing a movable contact body series in which individual movable contact bodies in a form in which a gap to the upper side is covered with a dustproof sheet are arranged at a predetermined pitch on a band-shaped carrier sheet, Prepare a three-layer pre- sheet where the separator, first pressure-sensitive adhesive, protective sheet, second pressure-sensitive adhesive, and oversheet overlap from the lower layer, and perform cutting processing with the outer shape line that constitutes the dustproof sheet from the upper surface and the lower surface. The two-layer pre-sheet from which the separator has been peeled off is attached to the upper surface side of a movable contact body structure in which individual movable contact bodies are arranged at a predetermined pitch on the carrier sheet, and then the dust-proof sheet within the protective sheet. with the sticking method of the sheet member to the movable contact communication according to the present invention that peeling the portion other than that is processed and formed in and the over sheet together, the individual movable Becomes efficient possible application of the dust-proof sheet for improving the dust and water resistance to the point body continuously, the dust-proof sheet in the upper side each has the carrier sheet movable contact gap is covered form of the An advantageous effect is obtained that the movable contact body trains arranged at a predetermined pitch can be obtained at low cost .
[Brief description of the drawings]
FIG. 1 is an external perspective view of a movable contact body series in a state where a sheet member is pasted using a method for pasting a sheet member to a movable contact body series according to an embodiment of the present invention. FIG. 3 is a perspective view showing a cutting process state of the three-layer pre-sheet. FIG. 4 is a cross-sectional view showing a cutting process state of the three-layer pre-sheet. ] Perspective view showing the process of peeling the separator from the three-layer pre-sheet and sticking it to the movable contact body series. [FIG. 6] Perspective view showing the peeling process of the two-layer pre-sheet subjected to the same cutting process. FIG. 8 is an external perspective view of a conventional movable contact body. FIG. 9 is an exploded perspective view of the conventional movable contact body. FIG. Fig. 11 shows the tape application state. FIG. 12A is an external perspective view of the same main part, and FIG. 12B is a cross-sectional view taken along line AA in FIG. 12A. FIG. Perspective view showing how to attach a dustproof sheet to a contact body 【Explanation of symbols】
DESCRIPTION OF SYMBOLS 1 Movable contact 2 Base sheet 2A Adhesive 3 Fixing tape 4 Carrier sheet 5 Insulation tape 6 Dust-proof sheet 7 Movable contact body 8 Separator 9 Protective sheet 9A First adhesive 10 Oversheet 10A Second adhesive 11 Three-layer pre-sheet 12 2 Layer pre-sheet

Claims (4)

Each movable contact body configured by holding a dome-shaped movable contact on the base sheet is stacked above the separator that has been subjected to the release treatment with respect to the movable contact body array arranged at a predetermined pitch on the belt-like carrier sheet. And a protective sheet having the first pressure-sensitive adhesive on the lower surface, and a second peeling force between the protective sheet and the second pressure-sensitive adhesive sheet is set higher than the protective force between the first pressure-sensitive adhesive and the separator. A three-layer pre-sheet is prepared by stacking two-layer pre-sheets in the order of the over-sheet having an adhesive on the lower surface. First, in the first step, the over-sheet, the protective sheet, the first and second pressure-sensitive adhesive, the individual arrangement pitch of some shape cutting the movable contact of the contour lines constituting proof sheet set in outer shape to cover the gap between the upper side of the movable contact Subjecting further subjected to cutting the remaining shaped portion of the outline constituting the outer shape of the dust-proof sheet from said three-layer Pureshito lower surface to the separator and the protective sheet and the second pressure-sensitive adhesive in the same pitch, then the second In this step, the separator is peeled to form a two-layer pre-sheet, and the two-layer pre- sheet is pasted on the upper side of the movable contact body with the first pressure-sensitive adhesive, and then processed into the dust-proof sheet within the protective sheet. The dust-proof sheet cut into individual pieces corresponding to the individual movable contact bodies is individually applied to the upper surface of the movable contact body by peeling off the parts other than the oversheet and the oversheet integrally. Each movable contact body in the form of being continuously attached and mounted and covered with the dust-proof sheet in the upper gap is arranged on the carrier sheet at a predetermined pitch. Sticking method of the sheet member to the movable contact communication can be obtained dynamic contact unit communication. The movable contact body is configured such that the dome-shaped movable contact is held on the base sheet with an adhesive provided on the lower surface of the fixing tape, and the dust-proof sheet covers at least the outer peripheral portion of the fixing tape. The method for sticking a sheet member to the movable contact body series according to claim 1, wherein the sheet member is stuck on an upper surface.   The movable contact body is adhered on the carrier sheet with an adhesive provided on the lower surface of the base sheet, and more than the adhesive force that adheres to the base sheet and the carrier sheet of the adhesive that adheres the movable contact body and the base sheet. The method for sticking a sheet member to the movable contact body series according to claim 1, wherein the adhesive force sticking to the protective sheet of the second adhesive is set to be weak. Claim to keep the opening angle between 175 degrees and 100 degrees with respect to the carrier sheet, and to continuously peel off the oversheet and the part other than the protective sheet processed to the dustproof sheet. Item 8. A method of attaching a sheet member to the movable contact body series according to Item 1.

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