CN210429580U

CN210429580U - Limit switch

Info

Publication number: CN210429580U
Application number: CN201921621652.1U
Authority: CN
Inventors: 支昭和; 陈飞; 刘青
Original assignee: Konida Electric Co Ltd
Current assignee: Konida Electric Co Ltd
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-04-28
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a limit switch relates to sensor technical field, and its technical scheme main points are: the head unit is fixedly connected with a regular polygon prism, clamping grooves are formed in the edge surfaces of the regular polygon prism, and a plurality of clamping grooves are connected at the head and located on the same plane; the upper end surface of the main body is provided with a regular polygon mounting groove matched with the regular polygon prism, the side surface of the whole body of the main body is provided with an embedded groove, and the bottom of the embedded groove is provided with a limiting groove communicated with the regular polygon mounting groove; a U-shaped clamping piece is embedded in the embedding groove, and when the U-shaped clamping piece is embedded in the embedding groove, the side edge of the U-shaped clamping piece protrudes out of the limiting groove towards the axis direction of the regular polygon mounting groove; the angle between the main body and the head is adjusted, the switch is flexibly used in a simple and compact mode, and the using performance of the switch is improved.

Description

Limit switch

Technical Field

The utility model relates to a sensor technical field, more specifically say, it relates to a limit switch.

Background

The limit switch is also called a travel switch, and is an electric switch used for limiting the movement limit position of mechanical equipment. The device can be arranged on relatively static objects (such as fixed frames, door frames and the like, which are called static objects for short) or moving objects (such as travelling cranes, doors and the like, which are called animals for short); the limit switch is a contact type limit switch and a non-contact type limit switch. The contact type is more intuitive, and an upper travel switch is arranged on a moving part of mechanical equipment, and a limit stop block or an opposite mounting position is arranged on a fixed point of relative movement of the upper travel switch and the fixed point. When the mechanical contact of the travel switch hits the stop, the control circuit is switched off (or changed), and the machine stops or changes operation. Due to the inertial movement of the machine, such a travel switch has a certain "overtravel" to protect the switch from damage. Non-contact types are various, and common types include reed switches, photoelectric types, inductive types and the like, and the types can be found in elevators.

Chinese patent with publication No. CN104465191B, published 2015 3-25 discloses a limit switch comprising a body, a head, fixing means, said body being generated along a main axis and comprising a switching device, said head being removable and orientable with respect to said body so that it adopts several different angular positions with respect to said main axis, said head comprising actuating means arranged to act on said switching device, said fixing means being arranged only on said head of said limit switch, said head having at least two separate bearing planes, said fixing means being arranged for fixing said head so that it bears against said bearing by one or the other of its two bearing planes.

The limit switch is supported and abutted against the support through one or the other of the two support planes, although the purpose of fixing the limit switch on the support by the fixing device is realized; however, this approach does not effectively adjust the angular position of the head, thereby affecting its performance.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a limit switch has the angle between adjustment main part and the head to simple compact mode uses the switch in a flexible way, improves its effect of performance.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a limit switch comprises a main body and a head unit connected with the main body, wherein the head unit is fixedly connected with a regular polygon prism, clamping grooves are formed in the prism surface of the regular polygon prism, and a plurality of clamping grooves are connected in a head mode and are located on the same plane; the upper end surface of the main body is provided with a regular polygon mounting groove matched with the regular polygon prism, the side surface of the whole body of the main body is provided with an embedded groove, and the bottom of the embedded groove is provided with a limiting groove communicated with the regular polygon mounting groove; the U-shaped clamping piece is embedded in the caulking groove, and when the U-shaped clamping piece is embedded in the caulking groove, the side edge of the U-shaped clamping piece protrudes out of the limiting groove and is clamped in the clamping groove.

With the arrangement, when the angle of the main body and the head unit needs to be adjusted, the U-shaped clamping piece is pulled out from the caulking groove, so that the U-shaped clamping piece is separated from the clamping groove on the regular polygon prism, and the acting force between the main body and the head unit is lost, so that the head unit is pulled out from the main body to the regular polygon mounting groove; the head unit is rotated to a proper angle to change the relative position between the head unit and the main body, the regular polygon prism is inserted into the regular polygon mounting groove to enable the clamping groove and the limiting groove to be communicated, finally the U-shaped clamping piece is clamped in the embedding groove to enable the rod parts on the two sides of the U-shaped clamping piece to protrude out of the limiting groove and be clamped in the clamping groove, the purpose that the head unit can be detached relative to the main body and can be directionally positioned on the main body unit to be adjusted by adopting a plurality of different angular positions is achieved, the angle between the main body and the head unit can be adjusted, the switch can be flexibly used in a simple and compact mode, and the using performance of.

Further setting: and the two limiting grooves are symmetrically arranged on two sides of the regular polygon mounting groove.

So set up, through both sides atress effect, improve the both sides pole portion of U type fastener and act on the draw-in groove of both sides, improve the stability that main part and head unit pass through U type fastener fixed connection.

Further setting: and the two free tail ends of the U-shaped clamping piece are provided with extending parts extending towards the inner side of the U-shaped clamping piece.

So set up, when U type fastener inlays and locates in the caulking groove, in the caulking groove that acts on in the main part through two free terminal extensions of U type fastener, improve the stability of U type fastener installation in the main part, and then improve the stability through U type fastener fixed connection between main part and the head unit.

Further setting: the U-shaped clamping piece is a metal elastic clamping piece.

So set up, be convenient for realize operating U type fastener, improve the connection stability that U type fastener acted on between main part and the head unit.

Further setting: the side edge of the main body, which is arranged in the U-shaped clamping piece U groove direction, is provided with a yielding groove, and the yielding groove is communicated with the caulking groove.

So set up, when the operation, act on U type fastener through the groove of stepping down, be convenient for carry out the purpose operated to the U type fastener of joint in the caulking groove.

Further setting: the main body is provided with a mounting hole.

So set up, pass the mounting hole through corresponding mounting, realize the effect to limit switch installation.

Further setting: and 4-16 surfaces of the regular polygonal prism.

So set up, realize the effect of a plurality of fixed angle directional adjustments.

Further setting: the positioning column is coaxially and fixedly connected to the free end face of the regular polygon prism, a positioning hole is formed in the bottom of the regular polygon mounting groove, and the positioning column is inserted into the positioning hole during mounting.

So set up, when carrying out the regulation of angle to main part and head unit, make its reference column rotatable grafting in the locating hole, improve the stability that the head unit is located angle modulation on the main part.

By adopting the technical scheme, the utility model discloses relative prior art compares, has following advantage:

1. the U-shaped clamping piece is clamped in the embedding groove, so that the rod parts of two side edges of the U-shaped clamping piece protrude out of the limiting groove and are clamped in the clamping groove, the aim that the head unit is detachable relative to the main body and can be directionally positioned in the main body unit to be adjusted by adopting a plurality of different angular positions is fulfilled, the angle between the main body and the head is adjusted, the switch is flexibly used in a simple and compact mode, and the using performance of the U-shaped clamping piece is improved;

2. the extending parts of the two free tail ends of the U-shaped clamping piece act in the caulking groove on the main body, so that the stability of the U-shaped clamping piece arranged on the main body is improved, and the stability of the fixed connection between the main body and the head unit through the U-shaped clamping piece is further improved;

3. when the angle of the main body and the head unit is adjusted, the positioning column can be rotatably inserted into the positioning hole, and the stability of angle adjustment of the head unit on the main body is improved.

Drawings

FIG. 1 is a schematic structural diagram of a limit switch;

FIG. 2 is an exploded view of a limit switch;

fig. 3 is a cross-sectional view of the limit switch positioning post at the axis.

In the figure: 1. a main body; 11. a regular polygon mounting groove; 12. caulking grooves; 13. a limiting groove; 14. positioning holes; 15. a yielding groove; 16. mounting holes; 2. a head unit; 3. a U-shaped clamping piece; 31. an extension portion; 4. a regular polygonal prism; 41. a card slot; 42. and a positioning column.

Detailed Description

The limit switch is further described with reference to the accompanying drawings.

A limit switch, as shown in figure 1, comprises a main body 1, a head unit 2 connected with the main body 1 and a U-shaped clamping piece 3 used for fixedly installing the head unit 2 on the main body 1; the head unit 2 is removably and orientable with respect to the main body 1 in a number of different angular positions adopted by the main body 1 unit.

As shown in fig. 2, a regular polygon prism 4 is fixedly connected to the head unit 2, the prism surface of the regular polygon prism 4 is 4-16 surfaces, and the regular polygon prism is preferably a regular octagon prism in the scheme; the edge surfaces of the regular polygon prism 4 are provided with clamping grooves 41, and a plurality of clamping grooves 41 are connected at the head and are positioned on the same plane; a regular polygon mounting groove 11 matched with the regular polygon prism 4 is formed in the upper end face of the main body 1, and the regular polygon mounting groove is a regular octagon mounting groove; the side surface of the whole body of the main body 1 is provided with an embedded groove 12, and the bottom of the embedded groove 12 is provided with a limit groove 13 communicated with the regular polygon mounting groove 11; the two limit grooves 13 are symmetrically arranged on two sides of the regular polygon mounting groove 11.

As shown in fig. 2, the U-shaped clip 3 is a metal elastic clip, and two free ends of the U-shaped clip 3 are provided with extending parts 31 extending towards the inner side of the U-shaped clip 3; when the U-shaped clip 3 is embedded in the embedding groove 12, the two side edges thereof protrude out of the limiting groove 13 towards the axial direction of the regular polygon mounting groove 11 and are clamped in the clamping groove 41 on the regular polygon prism 4, so as to realize the fixed connection between the main body 1 and the head unit 2.

As shown in fig. 2 and 3, in order to facilitate the stability of the angle adjustment of the head unit 2 on the main body 1, a positioning column 42 is coaxially and fixedly connected to the free end surface of the regular polygon prism 4, a positioning hole 14 is formed at the bottom of the regular polygon mounting groove 11, and the positioning column 42 is rotatably inserted into the positioning hole 14 during the adjustment mounting.

As shown in fig. 1 and 2, in order to facilitate the insertion and removal of the U-shaped clip member 3, an abdicating groove 15 is formed on a side of the main body 1 installed in the direction of the U-shaped groove of the U-shaped clip member 3, and the abdicating groove 15 is communicated with the caulking groove 12.

As shown in fig. 1, in order to facilitate the installation of the main body 1 on a corresponding carrier, a plurality of installation holes 16 are formed in the main body 1, and corresponding fixing bolts pass through the installation holes 16 to realize the installation effect on the limit switch.

The working principle is as follows: when the angle of the main body 1 and the head unit 2 needs to be adjusted, firstly, the U-shaped clamping piece 3 is pulled out from the embedding groove 12, so that the U-shaped clamping piece 3 is separated from the clamping groove 41 on the regular polygon prism 4, the mutual acting force between the main body 1 and the head unit 2 is lost, and the head unit 2 is pulled out from the main body 1 to the regular polygon mounting groove 11; then, the head unit 2 is rotated to a proper angle to change the relative position between the head unit and the main body 1, the regular polygon prism 4 is inserted into the regular polygon mounting groove 11, the clamping groove 41 and the limiting groove 13 are communicated, finally, the U-shaped clamping piece 3 is clamped in the embedding groove 12, the rod parts of the two side edges of the U-shaped clamping piece respectively protrude out of the limiting groove 13 and are clamped in the clamping groove 41, the aim that the head unit 2 can be detached relative to the main body 1 and can be directionally positioned in the main body 1 to be adjusted by adopting a plurality of different angular positions is achieved, the angle between the main body 1 and the head is adjusted, the switch is flexibly used in a simple and compact mode, and the using performance of the switch is improved.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. A limit switch, includes main part (1) and head unit (2) be connected with main part (1), its characterized in that: the head unit (2) is fixedly connected with a regular polygon prism (4), clamping grooves (41) are formed in the edge surfaces of the regular polygon prism (4), and a plurality of clamping grooves (41) are connected in an initial position and are located on the same plane; the upper end face of the main body (1) is provided with a regular polygon mounting groove (11) matched with the regular polygon prism (4), the side face of the whole body of the main body (1) is provided with an embedded groove (12), and the bottom of the embedded groove (12) is provided with a limiting groove (13) communicated with the regular polygon mounting groove (11); the U-shaped clamping piece (3) is embedded in the caulking groove (12), and when the U-shaped clamping piece (3) is embedded in the caulking groove (12), the side edge of the U-shaped clamping piece protrudes out of the limiting groove (13) and is clamped in the clamping groove (41).

2. A limit switch according to claim 1, wherein: the two limiting grooves (13) are symmetrically arranged on two sides of the regular polygon mounting groove (11).

3. A limit switch according to claim 1, wherein: the two free tail ends of the U-shaped clamping piece (3) are provided with extending parts (31) extending towards the inner side of the U-shaped clamping piece (3).

4. A limit switch according to claim 1, wherein: the U-shaped clamping piece (3) is a metal elastic clamping piece.

5. A limit switch according to claim 1, wherein: the side edge of the main body (1) which is arranged in the U-shaped clamping piece (3) in the U-groove direction is provided with a abdicating groove (15), and the abdicating groove (15) is communicated with the caulking groove (12).

6. A limit switch according to claim 1, wherein: the main body (1) is provided with a mounting hole (16).

7. A limit switch according to claim 1, wherein: the prism surface of the regular polygon prism (4) is 4-16 surfaces.

8. A limit switch according to claim 1, wherein: the positioning structure is characterized in that a positioning column (42) is coaxially and fixedly connected to the free end face of the regular polygon prism (4), a positioning hole (14) is formed in the bottom of the regular polygon mounting groove (11), and the positioning column (42) is inserted into the positioning hole (14) during mounting.