CN112038140A - Exposed trigger device with built-in keys and monitoring equipment - Google Patents
Exposed trigger device with built-in keys and monitoring equipment Download PDFInfo
- Publication number
- CN112038140A CN112038140A CN201910477080.2A CN201910477080A CN112038140A CN 112038140 A CN112038140 A CN 112038140A CN 201910477080 A CN201910477080 A CN 201910477080A CN 112038140 A CN112038140 A CN 112038140A
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- built
- exposed
- key
- base
- key post
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
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- Push-Button Switches (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
The invention discloses an exposed trigger device with a built-in key and monitoring equipment. Based on the invention, the exposed trigger device of the built-in key is provided with an exposed key column used for being pressed outside the equipment shell and a built-in key column used for being pressed and touched inside the equipment shell, when the end part of the exposed key column is pressed, the conical elastic part is elastically deformed in response to the movement of the exposed key column under the action of external force and synchronously drives the built-in key column to generate the built-in key touch and press stroke; after the external force disappears, the conical elastic part drives the exposed key column and the built-in key column to synchronously reset under the action of the elastic force and releases the touch pressure on the built-in key, so that the built-in key can be used without performing disassembly operation on a detachable part of the equipment shell, and the convenience for the operation of the built-in key can be improved. Moreover, the exposed trigger device provided by the invention can also provide a sealing function so as to meet the sealing requirements such as water resistance and the like.
Description
Technical Field
The invention relates to the field of security protection, in particular to an exposed trigger device with built-in keys and monitoring equipment applying the exposed trigger device with the built-in keys, which are suitable for monitoring equipment such as a camera and the like.
Background
Monitoring devices arranged in outdoor environments are often equipped with built-in keys. Because the built-in key is arranged in the inner cavity of the equipment shell and is completely covered and shielded, when the built-in key is required to be used, the dismounting operation (for example, using an auxiliary tool such as a screwdriver) needs to be carried out on the detachable part of the equipment shell, and the built-in key can be in a pressure-contact exposed state.
Therefore, the built-in keys of the monitoring equipment have the problem of inconvenient operation.
Disclosure of Invention
One embodiment of the present invention provides an exposed triggering device with a built-in key, comprising:
a built-in base including a sheet-shaped main body portion and a tapered elastic portion, wherein the tapered elastic portion is arched with respect to the sheet-shaped main body portion on a first side of the built-in base;
an exposed key post extending along a height direction of the tapered elastic portion at the first side of the built-in base, the exposed key post being connected to a tapered top of the tapered elastic portion;
a built-in key post extending parallel to the exposed key post on a second side of the built-in base opposite the first side, and the built-in key post connecting the exposed key post;
when the end part of the exposed key column is subjected to external pressure, the conical elastic part responds to the movement of the exposed key column under the action of the external force to generate elastic deformation and synchronously drives the built-in key column to generate a built-in key touch stroke;
and when the external force disappears, the conical elastic part drives the exposed key post and the built-in key post to synchronously reset under the action of the elastic force and releases the touch pressure on the built-in key.
Optionally, the strength of the tapered resilient portion is lower than the strength of the sheet-like body portion.
Optionally, the tapered wall thickness of the tapered resilient portion is less than the thickness of the sheet-like body portion.
Optionally, the tapered resilient portion has a first taper wall thickness at a taper base, a second taper wall thickness at a taper apex, and a third taper wall thickness between a taper apex and a taper base, wherein the second taper wall thickness is less than the first taper wall thickness, and the third taper wall thickness is less than the second taper wall thickness.
Optionally, the exposed key post is connected to a root portion of the built-in base by a conical top of the conical elastic portion, the conical top of the conical elastic portion is connected to a periphery of the root portion of the exposed key post, and the root portion of the built-in key post, which faces the built-in base, is connected to an end face of the root portion of the exposed key post.
Optionally, the cross-sectional dimension of the built-in key post is smaller than the exposed key post.
Optionally, the built-in key post has a square cross-section and the exposed key post has a circular cross-section that is not less than an circumscribed circle of the square cross-section.
Optionally, the built-in key post has a stiffener.
Optionally, the built-in base further comprises a gland-side sealing rim and a cavity-side sealing rim, wherein the gland-side sealing rim is formed on the edge of the sheet-shaped body portion at the first side of the built-in base, and the cavity-side sealing rim is formed on the edge of the sheet-shaped body portion at the second side of the built-in base. .
Another embodiment of the present invention provides a camera including:
an equipment enclosure having an enclosure opening exposing an interior cavity;
a built-in key disposed in an inner cavity of the device housing at the device housing opening;
the exposed triggering device as described above, wherein the built-in base of the exposed triggering device is disposed between the built-in key and the opening of the equipment enclosure, the built-in key post faces the built-in key, and the exposed key post extends out of the opening of the equipment enclosure;
the gland covers the opening of the equipment shell and is provided with an exposed key column through hole for the exposed key column to extend out of the opening of the equipment shell.
Optionally, further comprising a mounting frame, the mounting frame comprising: a support bezel disposed between the built-in key and the built-in base, and having built-in key post through holes through which the built-in key posts pass; the clamping part is formed at the edge of the supporting baffle and clamped with the equipment shell.
Optionally, the built-in base further comprises a gland side sealing rim and a lumen side sealing rim, wherein: the gland-side sealing rim is formed at an edge of the sheet-like body portion at the first side of the built-in base, and the gland-side sealing rim is in sealing engagement with the gland; the inner cavity side sealing edge is formed on the edge of the sheet-shaped main body part at the second side of the built-in base, and is in sealing fit with the cavity wall of the inner cavity.
Based on the above embodiment, the exposed triggering device has the exposed key column for performing pressing operation on the exterior of the equipment enclosure and the built-in key column for performing pressing touch operation on the built-in key in the equipment enclosure, wherein when the end of the exposed key column is subjected to external pressure, the tapered elastic part elastically deforms in response to the movement of the exposed key column under the action of the external force and synchronously drives the built-in key column to generate a built-in key pressing stroke; and after the external force disappears, the conical elastic part drives the exposed key column and the built-in key column to synchronously reset under the action of the elastic force and releases the touch pressure on the built-in key, so that the built-in key can be used without detaching a detachable part of the equipment shell, and the convenience of the operation of the built-in key can be improved. Moreover, the exposed trigger device can also provide a sealing function so as to meet sealing requirements such as water resistance.
Drawings
The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention:
fig. 1a and 1b are schematic perspective views of an exposed triggering device with built-in keys according to an embodiment of the present invention;
fig. 2a to 2c are schematic projection structural diagrams of the exposed triggering device of the built-in key shown in fig. 1a and 1 b;
FIG. 3 is a cross-sectional view A-A of FIG. 2 a;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 a;
fig. 5 is a schematic structural diagram of an external appearance of a camera in another embodiment of the present invention;
FIG. 6 is a partial cross-sectional view of FIG. 5;
fig. 7 is a partially enlarged view of fig. 6 at C.
Description of the reference numerals
10 built-in base
11 sheet-like body portion
12 side sealing edge of gland
13 inner cavity side sealing edge
14 avoiding groove
20 tapered elastic part
21 conical bottom
22 conical tip
23 taper waist
30 exposed key post
40 built-in key post
50 built-in key
500 circuit board
51 Equipment Enclosure
510 casing opening
511 inner flange
512 gland groove
52 pressing cover
520 exposed key post via
521 conical surface limiting bulge
522 sealing limit bulge
60 mounting rack
61 supporting baffle plate
610 built-in key post via
62 catch
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Fig. 1a and 1b are schematic perspective views of an exposed triggering device with built-in keys according to an embodiment of the present invention. Fig. 2a to 2c are schematic projection structural diagrams of the exposed triggering device of the built-in key shown in fig. 1a and 1 b. Fig. 3 is a cross-sectional view a-a of fig. 2 a. Fig. 4 is a cross-sectional view B-B of fig. 2 a. Referring to fig. 1a and 1b, and fig. 2a to 2c and fig. 3 and 4, in an embodiment, an exposed triggering device of a built-in key may be integrally formed by a flexible soft material such as silicon, and may include a built-in base 10, an exposed key post 30 and a built-in key post 40.
The built-in base 10 may include a sheet-like body portion 11 and a tapered resilient portion 20, wherein the sheet-like body portion 11 may be flat or substantially flat in shape, and the tapered resilient portion 20 is arched with respect to the sheet-like body portion 11 at a first side (a side mainly shown in fig. 1 a) of the built-in base 10.
The exposed key posts 30 may extend in the height direction of the tapered elastic portion 20 on the above-mentioned first side (the side mainly shown in fig. 1 a) of the built-in base 10, and the exposed key posts 30 connect the tapered tops of the tapered elastic portion 20.
Built-in key post 40 may extend parallel to exposed key post 30 on a second side (the side primarily shown in fig. 1 b) of built-in base 10 opposite the first side, and built-in key post 40 connects exposed key posts 30.
When the end of the exposed key post 30 is pressed by external force, the conical elastic part 20 elastically deforms in response to the movement of the exposed key post 30 under the action of external force and synchronously drives the built-in key post 40 to generate a built-in key touch stroke; when the external force disappears, the tapered elastic portion 20 drives the exposed key post 30 and the built-in key post 40 to synchronously reset under the action of the elastic force, and releases the touch pressure on the built-in key. The moving stroke of the exposed key post 30 under the external force can be regarded as a self-reset key stroke responding to the external force formed by the elastic deformation of the tapered elastic part 20 under the driving of the external force applied to the exposed key post 30 and the elastic reset after the external force disappears.
Specifically, the sheet-shaped main body portion 11 of the built-in base 10 is mainly used to provide a support strength required for the built-in base 10, and the tapered elastic portion 20 is mainly used to generate elastic deformation, and therefore, the strength of the tapered elastic portion 20 may be set lower than that of the sheet-shaped main body portion 11.
In the case where the exposed triggering device is integrally formed of an elastic soft material, the thickness of the sheet-shaped main body 11 may be set so as not to be deformed or significantly deformed by an external force, and the thickness of the tapered wall of the tapered elastic portion 20 may be set smaller than the thickness of the sheet-shaped main body 11 so as to form a weak portion with respect to the sheet-shaped main body 11. For example, the tapered resilient portion 20 has a first taper wall thickness t1 at the bottom 21, a second taper wall thickness t2 at the apex 22, and a third taper wall thickness t3 between the apex 22 and the bottom 21 (which portion may be referred to as the waist 23). The first conical wall thickness t1 may be set slightly less than the thickness of the sheet-shaped main body portion 11 to achieve a transitional connection of the conical spring portion 20 and the sheet-shaped main body portion 11 while ensuring the connection strength of the conical spring portion 20 and the sheet-shaped main body portion 11; the second taper wall thickness t2 may be set to be smaller than the first taper wall thickness t1, so that the connection flexibility of the tapered elastic portion 20 and the exposed key post 30 is greater than the connection flexibility of the tapered elastic portion 20 and the sheet-shaped main body portion 11; third cone wall thickness t3 is less than second cone wall thickness t2 is greater to take up the majority of the deformation between cone apex 22 and cone base 21 (which portion may be referred to as cone waist 23).
Thus, when the external force is transmitted to the tapered elastic portion 20, the weaker tapered elastic portion 20 absorbs the external force by elastic deformation, so that the external force is transmitted to the sheet-like body portion 11 as little as possible, and the sheet-like body portion 11 is strong enough to resist the external force transmitted by a small amount.
The root of the exposed key post 30 facing the built-in base 10 can be connected with the conical top 22 of the conical elastic part 20, the conical top 22 of the conical elastic part 20 is connected with the periphery of the root of the exposed key post 30, and the root of the built-in key post 40 facing the built-in base 10 can be connected with the end face of the root of the exposed key post 30 (extending into the conical cavity of the conical elastic part 20). In order to avoid unnecessary constraint of the built-in key post 40 on the connection flexibility of the tapered elastic portion 20 and the exposed key post 30, the cross-sectional dimension of the built-in key post 40 is smaller than that of the exposed key post 30 so as to avoid a deformation space of the tapered elastic portion 20 at the root of the exposed key post 30 as much as possible. For example, the internal key post 40 may have a square cross-section and the exposed key post 30 may have a circular cross-section that is not less than the circumscribed circle of the square cross-section, i.e., the internal key post 40 may have a square rod shape and the exposed key post 30 may have a cylindrical shape with a diameter that is not less than the diagonal dimension of the square rod cross-section.
To compensate for the loss of strength of internally-located key post 40, which is relatively small in cross-sectional size, internally-located key post 40 may have a stiffener 400.
In addition, the built-in base 10 may further include a gland-side sealing rim 12 and an inner cavity-side sealing rim 13, wherein the gland-side sealing rim 12 may be formed at an edge of the sheet-shaped body portion 11 at the aforementioned first side (the side mainly shown in fig. 1 a) of the built-in base 10, and the inner cavity-side sealing rim 13 may be formed at an edge of the sheet-shaped body portion 11 at the aforementioned second side (the side mainly shown in fig. 1 b) of the built-in base 10. Also, the aforementioned second side (the side mainly shown in fig. 1 b) of the built-in base 10 may be further formed with an escape groove 14 according to the structural arrangement requirement.
Fig. 5 is a schematic structural diagram of an external appearance of a camera in another embodiment of the present invention. Fig. 6 is a partial cross-sectional view of fig. 5. Fig. 7 is a partially enlarged view of fig. 6 at C. Referring to fig. 7 with particular attention to fig. 5 and 6, in another embodiment, a monitoring device may include a device housing 51, a cover 52, a built-in button 50, and an exposed triggering mechanism of the built-in button as shown in fig. 1a and 1 b.
The device housing 51 has a housing opening 510 exposing the interior cavity. The built-in keys 50 are arranged in the inner cavity of the device housing 51 at the device housing opening 510, e.g. the built-in keys 50 may be electrically connected to the circuit board 500 in the inner cavity and the built-in keys 50 may be configured as reset keys.
The aforementioned exposed triggering device of the built-in key shown in fig. 1a and 1b is installed at the opening 510 of the device case, wherein the built-in base 10 is disposed between the built-in key 50 and the opening 510 of the device case, the built-in key post 40 faces the built-in key 50, and the exposed key post 30 protrudes out of the opening 510 of the device case.
Accordingly, the gland 52 covers the device case opening 500, for example, the gland 52 may be fixed to the device case 51 by screws, and the gland 52 has an exposed key post through hole 520 through which the exposed key post 30 protrudes out of the device case opening 510.
Based on the above-mentioned embodiment, the exposed triggering device has the exposed key post 30 for being pressed outside the device case 51, and the built-in key post 40 for being pressed against the built-in key 50 inside the device case 51, wherein when the end of the exposed key post 30 is pressed by external force, the tapered elastic portion 20 is elastically deformed in response to the movement of the exposed key post 30 under the action of external force, and synchronously drives the built-in key post 40 to generate a pressing stroke against the built-in key 50; moreover, when the external force disappears, the tapered elastic portion 20 drives the exposed key post 30 and the built-in key post 40 to be reset synchronously under the action of the elastic force and releases the touch pressure on the built-in key 50, so that the built-in key 50 can be used without detaching a detachable member (for example, the pressing cover 52) of the device housing 51, and the convenience of the operation on the built-in key 50 can be improved.
The monitoring device in the above embodiment may further include a mounting bracket 60, and the mounting bracket 60 includes a supporting barrier 61 and a catch 62.
The supporting barrier 61 is disposed between the built-in key 50 and the built-in base 10, and the supporting barrier 61 has built-in key post through holes 610 through which the built-in key posts 40 pass. The exposed triggering means can be fixed to the supporting barrier 61 by the built-in key post 40 inserted through the built-in key post through hole 610.
A catch 62 is formed at an edge of the support fence 61, and the catch 62 is caught to the device case 51. For example, as can be seen in fig. 7, the device case 51 has an inner flange 511 at an edge near the case opening 510, and the catch 62 may form a grip on the inner flange 511.
As previously described, the built-in base 10 may include a gland-side sealing rim 12 and a cavity-side sealing rim 13, wherein the gland-side sealing edge 12 is formed at the edge of the sheet-shaped main body 11 at the aforementioned first side of the built-in base 10, and the inner cavity-side sealing edge 13 is formed at the edge of the sheet-shaped main body 11 at the aforementioned second side of the built-in base 10, as can be clearly seen from fig. 7, the gland-side sealing edge 12 can be in sealing engagement with the gland 52, and the inner cavity-side sealing edge 13 can be in sealing engagement with the cavity wall of the inner cavity of the equipment enclosure 51, for example, the chamber wall may include two parts, one part being the bottom surface of the gland groove 512 of the device housing 51 for receiving the gland 52, the other part being the support baffle 61, that is, a part of the inner cavity side sealing edge 13 may be in sealing engagement with the bottom surface of the capping groove 512, and another part of the inner cavity side sealing edge 13 may be in sealing engagement with the support shutter 61.
Based on the above embodiments, it can be seen that the exposed triggering device with the built-in keys can also provide a sealing function, so as to meet the sealing requirements such as water resistance.
In addition, still referring to fig. 7, for better sealing, the inner surface of the gland 52 facing the exposed trigger may also have a cone-shaped stopper projection 521 at the opening edge of 520 and abutting the cone-shaped elastic portion 20, and a seal stopper projection 522 at the abutment with the gland-side sealing edge 12 and abutting the sheet-shaped main body portion 11.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (12)
1. An exposed trigger device with built-in keys is characterized by comprising:
a built-in base (10), the built-in base (10) comprising a sheet-like body portion (11) and a tapered elastic portion (20), wherein the tapered elastic portion (20) arches relative to the sheet-like body portion (11) at a first side of the built-in base (10);
an exposed key post (30), the exposed key post (30) extending along the height direction of the conical elastic part (20) at the first side of the built-in base (10), and the exposed key post (30) being connected with the conical top of the conical elastic part (20);
a built-in key post (40), the built-in key post (40) extending parallel to the exposed key post (30) on a second side of the built-in base (10) opposite the first side, and the built-in key post (40) connecting the exposed key post (30);
when the end part of the exposed key column (30) is subjected to external pressure, the conical elastic part (20) elastically deforms in response to the movement of the exposed key column (30) under the action of the external force and synchronously drives the built-in key column (40) to generate a built-in key touch stroke;
and when the external force disappears, the conical elastic part (20) drives the exposed key column (30) and the built-in key column (40) to synchronously reset under the action of the elastic force and releases the touch pressure on the built-in keys.
2. An exposed trigger device according to claim 1, characterised in that the strength of the tapered resilient portion (20) is lower than the strength of the sheet-like body portion (11).
3. An exposed trigger device according to claim 2, characterised in that the conical resilient portion (20) has a conical wall thickness which is less than the thickness of the sheet-like body portion (11).
4. An exposure trigger device according to claim 3, wherein the conical resilient portion (20) has a first conical wall thickness at the base of the cone, a second conical wall thickness at the apex of the cone, and a third conical wall thickness between the apex and the base of the cone, wherein the second conical wall thickness is smaller than the first conical wall thickness and the third conical wall thickness is smaller than the second conical wall thickness.
5. An exposed trigger device according to claim 1, wherein the exposed key post (30) is connected with the conical top of the conical elastic part (20) towards the root of the built-in base (10), the conical top of the conical elastic part (20) is connected with the periphery of the root of the exposed key post (30), and the root of the built-in key post (40) towards the built-in base (10) is connected with the end surface of the root of the exposed key post (30).
6. An exposed trigger device as claimed in claim 5, wherein the cross-sectional dimension of the internally located key post (40) is smaller than the exposed key post (30).
7. An exposed trigger device as claimed in claim 6, wherein the built-in key post (40) has a square cross-section and the exposed key post (30) has a circular cross-section that is not less than the circumscribed circle of the square cross-section.
8. An exposed trigger device as claimed in claim 6, wherein the internally located key post (40) has a strengthening rib (400).
9. An exposed trigger device according to claim 1, wherein the built-in base (10) further comprises a gland side sealing rim (12) and an inner cavity side sealing rim (13), wherein the gland side sealing rim (12) is formed at the edge of the sheet shaped body part (11) at the first side of the built-in base (10) and the inner cavity side sealing rim (13) is formed at the edge of the sheet shaped body part (11) at the second side of the built-in base (10).
10. A monitoring device, comprising:
an equipment enclosure (51), the equipment enclosure (51) having an enclosure opening (510) exposing an interior cavity;
a built-in key (50), the built-in key (50) being arranged in an inner cavity of the device housing (51) at the device housing opening (510);
an exposed trigger device according to any of claims 1-8 wherein the built-in base (10) of the exposed trigger device is arranged between the built-in key (50) and the device housing opening (510), the built-in key post (40) is directed towards the built-in key (50), the exposed key post (30) protrudes out of the device housing opening (510);
a gland (52), the gland (52) closing the device chassis opening (500), and the gland (52) having an exposed key post through hole (520) for the exposed key post (30) to protrude out of the device chassis opening (510).
11. The monitoring device of claim 10, further comprising a mounting bracket (60), the mounting bracket (60) comprising:
a support bezel (61), the support bezel (61) being disposed between the built-in key (50) and the built-in base (10), and the support bezel (61) having a built-in key post through hole (610) through which the built-in key post (40) passes;
a catching part (62), the catching part (62) being formed at an edge of the supporting barrier (61), and the catching part (62) being caught to the device case (51).
12. The monitoring device of claim 11, wherein the built-in base (10) further comprises a gland-side sealing rim (12) and a lumen-side sealing rim (13), wherein:
the gland-side sealing rim (12) is formed on the edge of the sheet-like main body portion (11) on the first side of the built-in base (10), and the gland-side sealing rim (12) is in sealing engagement with the gland (52);
the inner cavity side sealing edge (13) is formed on the edge of the sheet-shaped main body part (11) at the second side of the built-in base (10), and the inner cavity side sealing edge (13) is in sealing fit with the cavity wall of the inner cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910477080.2A CN112038140B (en) | 2019-06-03 | 2019-06-03 | Exposed trigger device with built-in key and monitoring equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910477080.2A CN112038140B (en) | 2019-06-03 | 2019-06-03 | Exposed trigger device with built-in key and monitoring equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112038140A true CN112038140A (en) | 2020-12-04 |
| CN112038140B CN112038140B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910477080.2A Active CN112038140B (en) | 2019-06-03 | 2019-06-03 | Exposed trigger device with built-in key and monitoring equipment |
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| Country | Link |
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| CN (1) | CN112038140B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0020465D0 (en) * | 1999-08-20 | 2000-10-11 | Nec Corp | Water-proof and dust-proof structure of key switch device |
| CN1808652A (en) * | 2005-01-20 | 2006-07-26 | 建兴电子科技股份有限公司 | Interference ribs on surface of operating parts |
| JP2009054380A (en) * | 2007-08-24 | 2009-03-12 | Fukuda Denshi Co Ltd | Case of portable electronic equipment for medical application |
-
2019
- 2019-06-03 CN CN201910477080.2A patent/CN112038140B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0020465D0 (en) * | 1999-08-20 | 2000-10-11 | Nec Corp | Water-proof and dust-proof structure of key switch device |
| US6437267B1 (en) * | 1999-08-20 | 2002-08-20 | Nec Corp. | Water proof and dust proof structure of key switch device |
| CN1808652A (en) * | 2005-01-20 | 2006-07-26 | 建兴电子科技股份有限公司 | Interference ribs on surface of operating parts |
| JP2009054380A (en) * | 2007-08-24 | 2009-03-12 | Fukuda Denshi Co Ltd | Case of portable electronic equipment for medical application |
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| Publication number | Publication date |
|---|---|
| CN112038140B (en) | 2023-04-21 |
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