CN218525476U - Lower limit switch for lead screw - Google Patents
Lower limit switch for lead screw Download PDFInfo
- Publication number
- CN218525476U CN218525476U CN202120500625.XU CN202120500625U CN218525476U CN 218525476 U CN218525476 U CN 218525476U CN 202120500625 U CN202120500625 U CN 202120500625U CN 218525476 U CN218525476 U CN 218525476U
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- switch
- lead screw
- lower limit
- limit switch
- pedestal
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Abstract
The utility model relates to a lower limit switch for lead screw, including last pedestal and lower pedestal, the pedestal is provided with the ejector pin down, it is provided with switch assembly to go up the pedestal, switch assembly includes micro-gap switch and carriage release lever, micro-gap switch is equipped with the switch bump, the carriage release lever is provided with wide section and narrow part, connect through the slope between wide section and the narrow part. The utility model discloses simple structure, sensitivity height, fault rate are almost zero, for realizing that lift platform's stable goes up and down with effective spacing make the contribution.
Description
Technical Field
The utility model relates to a limit switch, the lower limit of mainly used lead screw belongs to the technical field of switch.
Background
The lead screw is a core component in the lifting platform, and the quality and the function of the lead screw are related to the problems that whether the lifting of the lifting platform is stable, whether mute lifting can be realized and the like. Therefore, to realize the superiority of lift platform, the first task is to seek a lead screw with superior performance. However, the stroke limit in the screw rod is a technical problem in the prior art, and the stroke limit switch in the prior art has a complex structure, is difficult to install, has low sensitivity and a high failure rate, often has the situation of no timely limit, causes excessive stroke, and cannot obtain satisfactory user experience.
Therefore, the development of a travel limit switch with simple structure, convenient installation, high sensitivity and low failure rate is a main development direction of technicians in the field at the present stage.
Based on this, provide the utility model discloses.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem of prior art, the utility model provides a lower limit switch for lead screw, its simple structure, sensitivity height, fault rate are almost zero, for realizing that lift platform's stable goes up and down and effective spacing contribution has been made.
In order to achieve the purpose, the utility model is realized by the following technical proposal:
the utility model provides a lower limit switch for lead screw, includes upper base body and lower base body, lower base body is provided with the ejector pin, upper base body is provided with switch assembly, switch assembly includes micro-gap switch and carriage release lever, micro-gap switch is equipped with the switch bump, the carriage release lever is provided with wide portion and narrow part, connect through the slope between wide portion and the narrow part.
The moving rod is provided with a spring.
The moving rod is provided with a limiting body, and the moving rod moves in the limiting body.
The number of the limiting bodies is two, and the wide part and the narrow part are located between the two limiting bodies.
The upper base body is provided with a through hole, and when the lower limit switch is closed, the end part of the moving rod extends out of the through hole.
The utility model has the advantages as follows:
the utility model is used for the lower limit switch of lead screw when the lead screw descends to the extreme low position, through wide portion to the support of switch bump, can effectively close micro-gap switch for lead screw stop motion prevents the decline again of lift platform. The lifting platform has the advantages of simple structure, high sensitivity and almost zero failure rate, and contributes to realizing stable lifting and effective limiting of the lifting platform.
Drawings
Fig. 1 is a schematic diagram of the switch open state of the present invention;
fig. 2 is a schematic diagram of the switch off state of the present invention;
wherein, 1 is an upper base body, 2 is a lower base body, 3 is an ejector rod, 4 is a microswitch, 5 is a moving rod, 6 is a switch salient point, 7 is a wide part, 8 is a narrow part, 9 is a slope, 10 is a spring, 11 is a limiting body, 12 is a lower part of a screw rod, and 13 is an upper part of the screw rod.
Detailed Description
The present invention will be further described with reference to specific examples, but the scope of the present invention is not limited thereto.
As shown in fig. 1 and 2, the utility model discloses a lower limit switch for lead screw, including upper base body 1 and lower base body 2, lower base body 2 is provided with ejector pin 3, and upper base body 1 is provided with the switch module, and the switch module includes micro-gap switch 4 and carriage release lever 5, and the tip of carriage release lever 5 is provided with spring 10, and micro-gap switch 4 is equipped with switch bump 6, and carriage release lever 5 is provided with wide portion 7 and narrow portion 8, connects through slope 9 between wide portion 7 and the narrow portion 8.
For preventing the carriage release lever from breaking away from the upper base body, the utility model provides a be equipped with two spacing bodies 11 on the carriage release lever 5, the carriage release lever 5 removes in spacing body 11, and wide section 7 and narrow portion 8 are located between two spacing bodies 11, realize 7 and narrow portion 8 of wide section spacing, has also realized spacing to spring 10.
During the use, install lower base body 2 in lead screw lower part 12, install upper base body 1 in lead screw upper portion 13, when the user needs to descend lift platform, lead screw upper portion 13 moves down, after moving to a certain degree, the one end of carriage release lever 5 contacts ejector pin 3, along with the continuous motion of lead screw upper portion 13, carriage release lever 5 is pushed up the direction to spring 10 by ejector pin 3, slope 9 slowly contacts switch bump 6, and carriage release lever 5 continues to be pushed up the direction to spring 10 by ejector pin 3, close bump 6 along slope 9 reach on wide portion 7, at this moment, switch bump 6 pushes down through wide portion 7, make the switch close the outage, the lead screw reaches the minimum, spring 10 is compressed to the minimum, lift platform stops to go up and down.
The utility model discloses there are two kinds of modes to the installation of carriage release lever 5: 1. go up pedestal 1 and be equipped with the through-hole (the utility model discloses do not sign in the drawing), when limit switch closed, the through-hole outside was stretched out to the tip of carriage release lever 5. 2. When the switch is opened, the end of the moving rod 5 has a certain distance with the upper seat body 1, and along with the movement of the moving rod 5, when the switch is closed, one end of the moving rod props against the upper seat body 1.
The utility model is used for the lower limit switch of lead screw when the lead screw descends to the extreme low position, through wide portion 7 to the support of switch bump 6, can effectively close micro-gap switch 4 for lead screw stop motion prevents the decline again of lift platform. The lifting platform has the advantages of simple structure, high sensitivity and almost zero failure rate, and contributes to realizing stable lifting and effective limiting of the lifting platform.
The structures and installation relations of the screw rod, the lifting platform and the like in the embodiment are common knowledge in the field, and are not described herein again.
The above embodiments are only used for explaining the inventive concept of the present invention, and not for limiting the protection of the claims of the present invention, and all the insubstantial modifications of the present invention made by using the above inventive concept shall fall within the protection scope of the present invention.
Claims (5)
1. A lower limit switch for lead screw which characterized in that: including last pedestal and lower pedestal, the pedestal is provided with the ejector pin down, it is provided with switch assembly to go up the pedestal, switch assembly includes micro-gap switch and carriage release lever, micro-gap switch is equipped with the switch bump, the carriage release lever is provided with wide portion and narrow portion, connect through the slope between wide portion and the narrow portion.
2. The lower limit switch for a lead screw of claim 1, wherein: the movable rod is provided with a spring.
3. The lower limit switch for a lead screw of claim 1, wherein: the moving rod is provided with a limiting body, and the moving rod moves in the limiting body.
4. The lower limit switch for the lead screw according to claim 3, wherein: the number of the limiting bodies is two, and the wide part and the narrow part are located between the two limiting bodies.
5. The lower limit switch for a lead screw of claim 1, wherein: the upper base body is provided with a through hole, and when the lower limit switch is closed, the end part of the moving rod extends out of the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120500625.XU CN218525476U (en) | 2021-03-09 | 2021-03-09 | Lower limit switch for lead screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120500625.XU CN218525476U (en) | 2021-03-09 | 2021-03-09 | Lower limit switch for lead screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218525476U true CN218525476U (en) | 2023-02-24 |
Family
ID=85236854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120500625.XU Active CN218525476U (en) | 2021-03-09 | 2021-03-09 | Lower limit switch for lead screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218525476U (en) |
-
2021
- 2021-03-09 CN CN202120500625.XU patent/CN218525476U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |