CN209758767U - Elevator touch button box - Google Patents
Elevator touch button box Download PDFInfo
- Publication number
- CN209758767U CN209758767U CN201822160733.8U CN201822160733U CN209758767U CN 209758767 U CN209758767 U CN 209758767U CN 201822160733 U CN201822160733 U CN 201822160733U CN 209758767 U CN209758767 U CN 209758767U
- Authority
- CN
- China
- Prior art keywords
- hole
- circuit board
- cavity
- key
- elastic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Elevator Control (AREA)
Abstract
a touch key box of an elevator comprises a lower box body, wherein the lower box body is provided with a cavity, a circuit board and an elastic base plate are sequentially arranged in the cavity, a cover body is fixed on the upper side of the lower box body, the circuit board and the elastic base plate are fixed in the cavity of the lower box body by the cover body, a display screen and a key hole are arranged on the cover body, a cylindrical through hole is formed in the elastic base plate at the position corresponding to the key hole, and the side surface of the elastic base plate is in surface contact with and interference fit with the cavity; the button is worn to establish in the key hole, and the button is equipped with the bulge including pressing the post, pressing the post middle part, and the post of pressing of bulge upside is worn in the key hole, and the post of pressing of bulge downside is worn in the through-hole. Compared with the prior art, the technical effect of the utility model is that, the utility model discloses be equipped with the elastic backing plate, it can play sealed effect, has blocked circuit board and elevator car's circulation of air, can prevent that the vapor of car from getting into circuit board department, avoids forming the water droplet on the circuit board.
Description
Technical Field
The utility model relates to an elevator button case.
Background
In an elevator, an elevator key box is generally provided, and a plurality of keys such as floor keys and door opening and closing keys are arranged on the elevator key box. And the circuit board is below the button, if moisture in the elevator is great, water droplet forms at the circuit board easily and causes the circuit short circuit, produces the accident.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem who solves: how to avoid the formation of water drops on the circuit board.
The technical scheme of the utility model specifically does:
A touch key box of an elevator comprises a lower box body, wherein the lower box body is provided with a cavity, a circuit board and an elastic base plate are sequentially arranged in the cavity, a cover body is fixed on the upper side of the lower box body, the circuit board and the elastic base plate are fixed in the cavity of the lower box body by the cover body, a display screen and a key hole are arranged on the cover body, a cylindrical through hole is formed in the elastic base plate at the position corresponding to the key hole, and the side surface of the elastic base plate is in surface contact with and interference fit with the cavity; the key is arranged in the key hole in a penetrating manner, the key comprises a pressing column, a protruding part is arranged in the middle of the pressing column, the pressing column on the upper side of the protruding part penetrates in the key hole, the pressing column on the lower side of the protruding part penetrates in the through hole, the protruding part is in a circular truncated cone shape with a large upper part and a small lower part, and the upper surface of the protruding part is in contact with the lower surface of the cover body; when the pressing column is in a reset state, the tip of the protruding part extends into the through hole.
the elastic backing plate is made of elastic rubber.
Compared with the prior art, the technical effect of the utility model is that, the utility model discloses be equipped with the elastic backing plate, it can play sealed effect, has blocked circuit board and elevator car's circulation of air, can prevent that the vapor of car from getting into circuit board department, avoids forming the water droplet on the circuit board.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a schematic cross-sectional view of the key in a reset state.
Fig. 3 is a schematic cross-sectional view of the key in a pressed state.
Detailed Description
as shown in fig. 1-3, an elevator touch key box includes a lower box 50, the lower box 50 has a cavity 51, a circuit board 40 and an elastic pad 30 are sequentially disposed in the cavity 51, a cover 10 is fixed on the upper side of the lower box 50, the circuit board 40 and the elastic pad 30 are fixed in the cavity 51 of the lower box 50 by the cover 10, and a display screen 11 and a key hole 12 are disposed on the cover 10.
The elastic pad 30 is provided with a cylindrical through hole 31 at a position corresponding to the key hole 12, and the side surface of the elastic pad 30 is in surface contact and interference fit with the cavity 51.
The key is arranged in the key hole 12 in a penetrating mode, the key comprises a pressing column 20, a protruding portion 21 is arranged in the middle of the pressing column 20, the pressing column 20 on the upper side of the protruding portion 21 penetrates in the key hole 12, the pressing column 20 on the lower side of the protruding portion 21 penetrates in a through hole 31, the protruding portion 21 is in a circular truncated cone shape with the large top and the small bottom, the upper surface of the protruding portion is in contact with the lower surface of the cover body 10, and the pressing column 20 can be prevented from moving upwards and being separated from the key hole 12.
When the pressing column 20 is in the reset state, the tip 22 (also the lower end) of the projection 21 protrudes into the through hole 31, see fig. 2. This arrangement enables the projections 21 to form an interference fit with the resilient pad 30.
The elastic pad 30 is elastic rubber.
The working principle is as follows:
Referring to fig. 3, when a human hand presses the key, the pressing post 20 moves downward, so that the lower end of the pressing post 20 is exposed at the lower side of the elastic pad 30 and presses the circuit board, and a signal is sent; at the same time, the protrusion 21 moves downward, and the elastic pad 30 around the pressing through hole 31 moves away from the pressing post 20, and the elastic pad 30 generates an elastic force 50 to the protrusion 21. When the hand leaves the button, the spring force 50 is still present, and the spring force 50 is a distributed force, and the resultant force moves the pressing column 20 upward to reset, see fig. 2.
In the process of moving the pressing column 20 up and down and in the state that the pressing column 20 is static, the elastic base plate 30 and the lower box body 50 and the elastic base plate 30 and the protruding part 21 are in interference fit, so that the air circulation between the circuit board and the elevator car is interrupted, the steam of the elevator car can be prevented from entering the circuit board, and water drops are prevented from being formed on the circuit board.
other content participates in the prior art.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (2)
1. The utility model provides an elevator touch button case, includes box down, and the lower box is equipped with the cavity, is equipped with circuit board, elastic backing plate in the cavity in proper order, and the lid is fixed to the upside of lower box, and the lid is equipped with display screen, button hole, its characterized in that in the cavity of box under with circuit board, elastic backing plate are fixed to the lid on the lid:
The elastic base plate is provided with a cylindrical through hole at a position corresponding to the key hole, and the side surface of the elastic base plate is in surface contact and interference fit with the cavity;
The key is arranged in the key hole in a penetrating manner, the key comprises a pressing column, a protruding part is arranged in the middle of the pressing column, the pressing column on the upper side of the protruding part penetrates in the key hole, the pressing column on the lower side of the protruding part penetrates in the through hole, the protruding part is in a circular truncated cone shape with a large upper part and a small lower part, and the upper surface of the protruding part is in contact with the lower surface of the cover body;
When the pressing column is in a reset state, the tip of the protruding part extends into the through hole.
2. The elevator touch keypad of claim 1, wherein: the elastic backing plate is made of elastic rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822160733.8U CN209758767U (en) | 2018-12-22 | 2018-12-22 | Elevator touch button box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822160733.8U CN209758767U (en) | 2018-12-22 | 2018-12-22 | Elevator touch button box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209758767U true CN209758767U (en) | 2019-12-10 |
Family
ID=68747025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822160733.8U Expired - Fee Related CN209758767U (en) | 2018-12-22 | 2018-12-22 | Elevator touch button box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209758767U (en) |
-
2018
- 2018-12-22 CN CN201822160733.8U patent/CN209758767U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191210 Termination date: 20201222 |