CN109216073B - Switch with a switch body - Google Patents
Switch with a switch body Download PDFInfo
- Publication number
- CN109216073B CN109216073B CN201810585964.5A CN201810585964A CN109216073B CN 109216073 B CN109216073 B CN 109216073B CN 201810585964 A CN201810585964 A CN 201810585964A CN 109216073 B CN109216073 B CN 109216073B
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- CN
- China
- Prior art keywords
- liquid
- switch
- light guide
- housing
- flange
- Prior art date
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Classifications
-
- 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
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- 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
- H01H13/023—Light-emitting indicators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The invention provides a switch and a switch unit capable of preventing the deterioration of illumination characteristics caused by the inflow of liquid. The switch has: a housing (20) having an accommodating section (21) therein; a button (30) having: an operation portion (31) at least a part of which is exposed to the outside of the housing (20) and at least a part of which is located in the housing portion (21), a flange portion (32) which is provided at an end portion of a side surface (311) of the operation portion (31) on the side of the housing portion (21) and which extends in a direction away from the operation portion (31); a light guide body (40) disposed inside the housing section (21); and liquid intrusion prevention sections (50, 60) which are disposed adjacent to the outer surface (321) or the inner surface (322) of the flange section (32) and prevent liquid from intruding between the light guide (40) and the operation section (31) through the space between the light guide (40) and the flange section (32).
Description
Technical Field
The present invention relates to a push button switch.
Background
Patent document 1: international publication No. WO2010/092679
However, for example, when the switch is used as an elevator switch, liquid may adhere to the switch when the interior of the elevator is cleaned. In this case, the liquid flows along the outer surface of the button of the switch, and flows between the plunger and the light guide plate due to the capillary phenomenon, and thus, the light irradiation characteristics may be deteriorated.
Disclosure of Invention
Accordingly, an object of the present invention is to provide a switch and a switch unit that can prevent deterioration of illumination characteristics due to inflow of liquid.
In the switch according to one aspect of the present invention,
comprising:
a housing having a housing portion therein and an operation surface provided with an operation opening portion communicating with the housing portion and the outside,
a button having: an operation portion at least a part of which is exposed to the outside of the housing and at least a part of which is located in the housing portion, and which is capable of reciprocating in an operation direction intersecting the operation surface via the operation opening portion; a flange portion that is provided at an end portion of the operating portion on the accommodating portion side in the operating direction, among side surfaces intersecting the operating surface, and that extends in a direction away from the operating portion along the operating surface,
a light guide disposed inside the housing portion adjacent to an end portion of the housing portion side in the operation direction of the button, an
And a liquid intrusion prevention portion that is disposed adjacent to an outer surface of the flange portion facing the operation surface or an inner surface of the flange portion facing the light guide body, and prevents liquid from intruding between the light guide body and the operation portion through a gap between the light guide body and the flange portion.
In addition, a switch unit according to an aspect of the present invention includes:
at least one switch of the technical scheme; and
a mounting panel having an operation hole into which the operation portion can be inserted,
the switch is attached to the attachment panel such that the operation portion is located in the operation hole of the attachment panel and the flange portion faces the periphery of the operation hole of the attachment panel.
The switch according to the above aspect includes a liquid intrusion prevention portion, and the liquid intrusion prevention portion and an outer surface of the flange portion facing the operation surface or an inner surface of the flange portion facing the light guide are disposed adjacent to each other. The liquid intrusion prevention unit prevents liquid from intruding between the light guide and the operation unit through a gap between the light guide and the flange, and prevents deterioration of the light emission characteristics due to inflow of liquid.
Further, according to the switch unit of the above-described aspect, even in a place (for example, an elevator) where use of liquid is expected, the switch unit of the above-described aspect can realize a switch unit in which the illumination characteristic is not deteriorated.
Drawings
Fig. 1 is a perspective view of a switch unit having a switch according to a first embodiment of the present invention.
Fig. 2 is a perspective view of the switch unit of fig. 1 in a state where the attachment panel is removed.
Fig. 3 is a sectional view taken along the line III-III of fig. 2.
Fig. 4 is a perspective view of a switch according to a first embodiment of the present invention.
Fig. 5 is an enlarged view of the vicinity of the liquid absorbing portion of fig. 3.
Fig. 6 is an enlarged view of the vicinity of the seal portion of the switch according to the second embodiment of the present invention, taken along the line III-III in fig. 2.
Fig. 7 is an enlarged view of the vicinity of the liquid absorbing portion and the sealing portion in a cross section taken along line III-III in fig. 2 of the switch according to the third embodiment of the present invention.
Description of the reference numerals:
1 switch unit
10 switch
20 casing
21 accommodating part
211 bottom surface
22 operating surface
23 operating the opening part
24 micro switch
30 push buttons
31 operating part
311 side surface
32 flange part
321 outer surface
40 light guide
401 surface
41 light source unit
42 recess
50 liquid absorption part
60 sealing part
100 mounting panel
101 through hole
102 gap
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. In addition, in the following description, terms (including terms such as "upper", "lower", "right", "left", "end", "side") indicating specific directions or positions are used as necessary, but the terms are used for convenience of understanding the invention with reference to the accompanying drawings and do not limit the technical scope of the invention by the terms. Furthermore, in the following description, merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. Further, the drawings are schematic, and the ratio of each dimension and the like do not necessarily coincide with the actual dimension.
(first embodiment)
For example, as shown in fig. 1, a switch 10 according to an embodiment of the present invention constitutes a switch unit 1 together with a mounting panel 100. In the switch unit 1 of the first embodiment, two switches 10 are mounted on the mounting panel 100, respectively.
Specifically, as shown in fig. 2, the mounting panel 100 has a substantially rectangular plate shape, and has two substantially rectangular through holes 101 penetrating in the plate thickness direction. Each switch 10 is attached to the attachment panel 100 in a state where an operation portion 31 of a push button 30 of the switch 10 described later is positioned in each through hole 101.
As shown in fig. 2, each switch 10 has a frame-shaped liquid absorbing portion 50 as an example of a liquid intrusion prevention portion between the switch and the mounting panel 100. In the first embodiment, the liquid absorbing portions 50 of the two switches 10 are integrally formed.
As shown in fig. 3 and 4, each switch 10 includes: a housing 20 having an accommodating portion 21 therein; a button 30 at least a part of which is exposed to the outside of the housing 20 and at least a part of which is located in the accommodating portion 21; and a light guide 40 disposed in the accommodating portion 21.
As shown in fig. 3 and 4, the housing 20 has a substantially rectangular box shape and has an operation surface 22 provided with an operation opening 23 communicating with the outside and the housing portion 21.
The push button 30 is made of a light-transmitting material, and as shown in fig. 3 and 4, the push button 30 includes an operating portion 31 having a substantially rectangular parallelepiped shape and a flange portion 32 provided at an end portion of the operating portion 31 on the accommodating portion 21 side.
As shown in fig. 3, the operation portion 31 is disposed so that at least a part thereof is exposed to the outside of the housing 20 and at least a part thereof is positioned in the accommodating portion 21, and is capable of reciprocating in an operation direction (i.e., the vertical direction in fig. 3) intersecting the operation surface 22 via the operation opening portion 23. As shown in fig. 3, the flange portion 32 is provided at an end portion of the side surface 311 intersecting the operation surface 22 of the operation portion 31 on the side of the housing portion 21 in the operation direction, and extends in a direction away from the operation portion 31 along the operation surface 22. In the first embodiment, as shown in fig. 4, the flange portion 32 is provided on the entire circumference of the side surface 311 of the operation portion.
As shown in fig. 3, the light guide 40 is plate-shaped and is disposed inside the housing portion 21 adjacent to an end portion on the housing portion 21 side in the operation direction of the push button 30. A light source portion 41 formed of, for example, an LED is provided on the outer peripheral side in the plate thickness direction of the light guide body 40 in the inside of the accommodating portion 21 (i.e., on the side surface side intersecting the bottom surface 211 of the accommodating portion 21). The light source unit 41 is connected to the micro switch 24 disposed inside the housing unit 21 and substantially at the center of the bottom surface 211 of the housing unit 21. The microswitch 24 is configured to be opened and closed in conjunction with or independently of the reciprocating movement of the push button 30 in the operation direction. When the micro switch 24 is turned on, the light from the light source 41 is supplied to the light guide 40, and when the micro switch 24 is turned off, the supply of the light from the light source 41 to the light guide 40 is stopped.
The housing portion 21 is provided with a link mechanism portion (not shown) that reciprocates the push button 30 in the operation direction while keeping the push button 30 in a posture substantially parallel to the operation surface 22.
As shown in fig. 3, the liquid absorbing portion 50 has a frame-shaped sheet shape made of a material (for example, a sponge or a water absorbing paper made of resin) capable of absorbing liquid such as water, and the liquid absorbing portion 50 and an outer surface 321 of the flange portion 32 of the push button 30 facing the operation surface 22 are disposed adjacent to each other around the operation portion 31. That is, the liquid absorbing portion 50 is disposed so as to be able to absorb liquid that flows in from the gap 102 between the through hole 101 of the mounting panel 100 and the outer surface of the button 30 (for example, the side surface 311 of the operation portion 31) (in particular, liquid that flows into the housing portion 21 along the side surface 311 of the operation portion 31). In the first embodiment, as shown in fig. 2, the liquid absorbing portion 50 is provided to liquid-tightly seal the entire circumference of the operation portion 31 in the direction of the side surface 311, and when the switch 1 is attached to the attachment panel 100, the liquid absorbing portion 50 is pressed against the attachment panel 100 and the flange portion 32 of the push button 30.
As described above, the switch 10 of the first embodiment includes the liquid absorbing portion 50, and the liquid absorbing portion 50 is disposed adjacent to the outer surface 321 of the flange portion 32 facing the operation surface 22. The liquid absorbing portion 50 prevents liquid from entering between the light guide 40 and the operation portion 31 through the space between the light guide 40 and the flange portion 32, and thus prevents deterioration of the light irradiation characteristic due to inflow of liquid.
Further, for example, when a sealing member such as an O-ring is disposed around the side surface 311 of the operation portion 31 of the push button 30 to tightly seal the periphery of the operation portion 31 in the side surface 311 to prevent liquid from entering between the light guide 40 and the operation portion 31 through the gap between the light guide 40 and the flange portion 32, it is necessary to apply interference to the fitting surface between the operation portion 31 and the sealing member. In this case, a dedicated sealing member is required for each shape of the push button 30, so that the structure may become complicated.
The switch 10 includes a liquid absorbing portion 50 in the form of a sheet having a frame shape as a liquid intrusion prevention portion, and the liquid absorbing portion 50 is disposed on an outer surface 321 of the flange portion 32 and around the operation portion 31, and is capable of absorbing liquid flowing along an outer surface of the push button 30. By this liquid absorbing portion 50, the space between the light guide 40 and the flange portion 32 can be sealed liquid-tightly with a simple structure, and thus, the liquid can be prevented from entering the space between the light guide 40 and the operation portion 31 through the space between the light guide 40 and the flange portion 32, and the deterioration of the light irradiation characteristic due to the inflow of the liquid can be prevented.
In the switch unit 1 according to the first embodiment, the switch 10 can realize a switch unit in which the illumination characteristics are not deteriorated even in a place where use of liquid is expected (for example, an elevator).
In addition, in the switch unit 1, a plurality of (two in the first embodiment) switches 10 are provided, and each of the plurality of switches 10 has a liquid absorption portion as a liquid intrusion prevention portion, and the plurality of liquid absorption portions 50 of the plurality of switches 10 are integrally formed. This can reduce the number of components, and the switch unit 1 can be easily assembled.
The liquid absorbing portion 50 is not limited to being provided on the entire circumference of the side surface 311 of the operation portion 31, and may be provided on a part of the side surface 311 of the operation portion 31 if possible.
Further, by constituting the liquid absorbing portion 50 with, for example, a sponge made of resin, it is possible to periodically clean and dry it, and it is possible to repeatedly use it.
In the switch unit 1, the liquid absorbing portion 50 of each of the plurality of switches 10 is not limited to being formed integrally, and the liquid absorbing portions 50 of the switches 10 may be formed separately.
(second embodiment)
As shown in fig. 6, a switch 10 according to a second embodiment of the present invention is different from the switch according to the first embodiment in that the switch 10 includes a sealing portion 60 as a liquid intrusion prevention portion, and the sealing portion 60 seals between the light guide 40 and the operation portion 31 to prevent liquid from flowing between the light guide 40 and the operation portion 31.
In the second embodiment, the same portions as those of the first embodiment are given the same reference numerals, and the description thereof is omitted.
The seal portion 60 is formed of, for example, an O-ring, and as shown in fig. 6, the seal portion 60 is disposed in the recess 42 provided on the surface 401 of the light guide body 40 facing the inner surface 322 of the flange portion 32 (i.e., the surface on the bottom surface 211 side of the housing portion 21) and is in pressure contact with the inner surface 322 of the flange portion 32.
The recess 42 is provided so as to surround the entire circumference of the operation portion 31 of the push button 30 as viewed in the operation direction (the vertical direction in fig. 6). That is, the sealing portion 60 is disposed on the inner surface 322 of the flange portion 32 and around the entire periphery of the operation portion 31 when viewed from the operation direction, and seals the gap between the light guide 40 and the operation portion 31 to prevent the liquid from flowing between the light guide 40 and the operation portion 31.
As described above, the switch 10 according to the second embodiment includes the sealing portion 60, and the sealing portion 60 is disposed on the inner surface of the flange portion 32 and around the entire periphery of the operation portion 31, and seals between the light guide 40 and the operation portion 31 to prevent the liquid from flowing between the light guide 40 and the operation portion 31. The sealing portion 60 can seal the space between the light guide 40 and the flange portion 32 in a liquid-tight manner with a simple structure, and can prevent liquid from entering the space between the light guide 40 and the operation portion 31 through the space between the light guide 40 and the flange portion 32, thereby preventing deterioration of the light irradiation characteristic due to inflow of liquid.
The sealing portion 60 is not limited to being disposed around the entire periphery of the operation portion 31 when viewed from the operation direction, and may be provided around a part of the periphery of the operation portion 31 in the operation direction if possible.
(third embodiment)
As shown in fig. 7, a switch 10 according to a third embodiment of the present invention is different from the first and second embodiments in that it includes a liquid absorbing portion 50 and a sealing portion 60 as a liquid intrusion prevention portion.
In the third embodiment, the same portions as those of the first and second embodiments are given the same reference numerals, and the description thereof is omitted.
By providing the liquid-absorbing portion 50 and the sealing portion 60 in this manner, for example, even when any one of the liquid-absorbing portion 50 and the sealing portion 60 is deteriorated and cannot exhibit its function, it is possible to prevent liquid from entering between the light guide 40 and the operation portion 31 through the space between the light guide 40 and the flange portion 32, and thus it is possible to prevent deterioration of the illumination characteristic due to inflow of liquid.
While various embodiments of the present invention have been described in detail with reference to the drawings, various embodiments of the present invention will be described.
The switch according to the first aspect of the present invention,
comprising:
a housing having a housing portion therein and an operation surface provided with an operation opening portion communicating with the housing portion and the outside,
a button having: an operation portion at least a part of which is exposed to the outside of the housing and at least a part of which is located in the housing portion, and which is capable of reciprocating in an operation direction intersecting the operation surface via the operation opening portion; a flange portion that is provided at an end portion of the operating portion on the accommodating portion side in the operating direction, among side surfaces intersecting the operating surface, and that extends in a direction away from the operating portion along the operating surface,
a light guide disposed inside the housing portion adjacent to an end portion of the housing portion side in the operation direction of the button, an
And a liquid intrusion prevention portion that is disposed adjacent to an outer surface of the flange portion facing the operation surface or an inner surface of the flange portion facing the light guide body, and prevents liquid from intruding between the light guide body and the operation portion through a gap between the light guide body and the flange portion.
According to the switch of the first aspect, the liquid intrusion preventing portion can prevent liquid from intruding between the light guide and the operation portion through between the light guide and the flange portion, and deterioration of the light emission characteristic due to inflow of liquid can be prevented.
In the switch according to the second aspect of the present invention, the liquid intrusion prevention portion includes a frame-shaped liquid suction portion that is disposed on the outer surface of the flange portion and around the operation portion and is capable of sucking liquid flowing along the outer surface of the push button.
According to the switch of the second aspect, the liquid can be prevented from entering between the light guide and the operation portion through the space between the light guide and the flange portion by the liquid suction portion with a simple configuration, and deterioration of the light irradiation characteristic due to inflow of the liquid can be prevented.
In the switch according to the third aspect of the present invention, the liquid intrusion prevention portion includes a seal portion that is disposed on the inner surface of the flange portion and around the operation portion, and seals a space between the light guide and the operation portion to prevent liquid from flowing between the light guide and the operation portion.
According to the switch of the third aspect, the seal portion can prevent the liquid from entering between the light guide and the operation portion through the space between the light guide and the flange portion, and the deterioration of the light irradiation characteristic due to the inflow of the liquid can be prevented.
The switch unit according to the fourth aspect of the present invention,
comprising:
at least one of the switches of the technical solutions,
a mounting panel having an operation hole into which the operation portion can be inserted,
the switch is attached to the attachment panel such that the operation portion is located in the operation hole of the attachment panel and the flange portion faces the periphery of the operation hole of the attachment panel.
According to the switch unit of the fourth aspect, the switch unit of the fourth aspect can realize a switch unit in which the illumination characteristic is not deteriorated even in a place (e.g., an elevator) where use of liquid can be expected.
A switch unit according to a fifth aspect of the present invention is the switch unit according to the fifth aspect, wherein the plurality of switches each have a frame-shaped liquid absorbing portion as the liquid intrusion prevention portion, the liquid absorbing portion being disposed on the outer surface of the flange portion and around the operation portion and being capable of absorbing liquid flowing along the outer surface of the push button,
the liquid suction part of the plurality of switches is integrally formed.
According to the switch unit of the fifth aspect, the number of components can be reduced, and the switch unit 1 can be easily assembled.
In addition, any of the various embodiments or modifications described above can be combined as appropriate to achieve the respective effects. In addition, combinations of the embodiments or examples or combinations of the embodiments and examples can be made, and combinations of features in different embodiments or examples can be made.
Industrial applicability of the invention
The switch of the present invention can be applied to, for example, an elevator switch.
Claims (3)
1. A kind of switch is disclosed, which is composed of a switch body,
comprising:
a housing having a housing portion therein and an operation surface provided with an operation opening portion communicating with the housing portion and the outside,
a button having: an operation portion at least a part of which is exposed to the outside of the housing and at least a part of which is located in the housing portion, and which is capable of reciprocating in an operation direction intersecting the operation surface via the operation opening portion; a flange portion that is provided at an end portion of the operating portion on the accommodating portion side in the operating direction, among side surfaces intersecting the operating surface, and that extends in a direction away from the operating portion along the operating surface,
a light guide disposed inside the housing portion adjacent to an end portion of the housing portion side in the operation direction of the button, an
A liquid intrusion prevention portion comprising: a frame-shaped liquid absorbing portion which is disposed on an outer surface of the flange portion and around the operation portion, and which is capable of absorbing liquid flowing along an outer surface of the button; and a sealing portion disposed on an inner surface of the flange portion and around the operation portion, and sealing a space between the light guide and the operation portion to prevent liquid from flowing between the light guide and the operation portion.
2. A switch unit has:
at least one switch of claim 1; and
a mounting panel having an operation hole into which the operation portion can be inserted,
the switch is attached to the attachment panel such that the operation portion is located in the operation hole of the attachment panel and the flange portion faces the periphery of the operation hole of the attachment panel.
3. The switch unit of claim 2,
a plurality of switches each having a frame-shaped liquid absorbing portion disposed on an outer surface of the flange portion and around the operation portion and capable of absorbing liquid flowing in along an outer surface of the button, and a sealing portion disposed on an inner surface of the flange portion and around the operation portion and sealing between the light guide and the operation portion to prevent liquid from flowing between the light guide and the operation portion,
the liquid suction part of the plurality of switches is integrally formed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017131332A JP6881101B2 (en) | 2017-07-04 | 2017-07-04 | switch |
| JP2017-131332 | 2017-07-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109216073A CN109216073A (en) | 2019-01-15 |
| CN109216073B true CN109216073B (en) | 2020-05-15 |
Family
ID=64991360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810585964.5A Active CN109216073B (en) | 2017-07-04 | 2018-06-08 | Switch with a switch body |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6881101B2 (en) |
| CN (1) | CN109216073B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113488348B (en) * | 2021-06-28 | 2023-11-10 | Tcl通讯（宁波）有限公司 | Button anti-sticking structure and terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH615285A5 (en) * | 1978-07-03 | 1980-01-15 | Meyer & Co Ag | Screwed presser |
| JPH1131430A (en) * | 1997-07-11 | 1999-02-02 | Hosiden Corp | Tact switch |
| CN2636394Y (en) * | 2003-07-07 | 2004-08-25 | 欧姆龙株式会社 | Button switch |
| CN205881751U (en) * | 2016-08-05 | 2017-01-11 | 浙江开控电气有限公司 | Shift knob's waterproof circle |
-
2017
- 2017-07-04 JP JP2017131332A patent/JP6881101B2/en active Active
-
2018
- 2018-06-08 CN CN201810585964.5A patent/CN109216073B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH615285A5 (en) * | 1978-07-03 | 1980-01-15 | Meyer & Co Ag | Screwed presser |
| JPH1131430A (en) * | 1997-07-11 | 1999-02-02 | Hosiden Corp | Tact switch |
| CN2636394Y (en) * | 2003-07-07 | 2004-08-25 | 欧姆龙株式会社 | Button switch |
| CN205881751U (en) * | 2016-08-05 | 2017-01-11 | 浙江开控电气有限公司 | Shift knob's waterproof circle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109216073A (en) | 2019-01-15 |
| JP2019016461A (en) | 2019-01-31 |
| JP6881101B2 (en) | 2021-06-02 |
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