CN217035470U

CN217035470U - Emergency stop switch

Info

Publication number: CN217035470U
Application number: CN202220166224.XU
Authority: CN
Inventors: 曾高夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-01-20
Filing date: 2022-01-20
Publication date: 2022-07-22
Anticipated expiration: 2032-01-20

Abstract

The utility model provides an emergency stop switch, and relates to the technical field of switches. An emergency stop switch comprises a shell, wherein two first conduction blocks are arranged on the shell at intervals, and a second conduction block used for communicating the two first conduction blocks is movably arranged on the shell; the casing is equipped with and is used for driving the first elastic component who switches on the equal butt of piece and two second, and the casing is equipped with and is used for driving the first promotion subassembly that switches on the piece that the second switches on away from of piece. The utility model has simple structure and fewer accessories, reduces the production cost and reduces the potential safety hazard.

Description

Emergency stop switch

Technical Field

The utility model relates to the technical field of switches, in particular to an emergency stop switch.

Background

All rotating parts in a workshop can directly or indirectly cause damage to a human body, protective measures must be additionally arranged, and an emergency stop button is one of the protective measures. The emergency stop switch is generally close to the main switch, and the total switch distance is far, so that when the emergency stop is needed due to danger, the time is very short, even the time of millisecond or microsecond is very important. In a short time, the machine is not stopped immediately, serious machine damage or personal injury accidents can be caused, and the machine is stopped by using an emergency stop switch or the time of personal injury is shortened, so that all the accidents are avoided.

In the prior art, the emergency stop switch is generally divided into a self-locking type emergency stop switch and a push-pull type emergency stop switch, but the locking and the unlocking of the emergency stop switch are realized by matching a spring and a ball arranged on an operating part connected with a button with a switch shell. However, the two emergency stop switches have different matching requirements, and the self-locking emergency stop switch requires a larger contact area between the ball and the positioning groove on the shell so as to avoid directly pulling up the operating part through the button during unlocking; for the push-pull type emergency stop switch, if the contact area of the ball and the positioning groove is too large, the switch is locked too tightly, so that the switch is not easy to release, and the locking of the switch is difficult to release. Therefore, in actual production, the two types of emergency stop switches are required to be matched with balls with different sizes to reliably operate under the condition that the shells have the same size. Therefore, the two types of emergency stop switches result in more parts in mass production, are prone to failure, and have higher production costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an emergency stop switch which is simple in structure, few in accessories, low in production cost and potential safety hazard.

The embodiment of the utility model is realized by the following steps:

the embodiment of the application provides an emergency stop switch, which comprises a shell, wherein two first conduction blocks are arranged on the shell at intervals, and a second conduction block used for communicating the two first conduction blocks is movably arranged on the shell; the casing is equipped with the elastic component who is used for driving first switch on piece and two second switch on the equal butt of piece, and the casing is equipped with the promotion subassembly that is used for driving first switch on piece and keeps away from second switch on piece.

Further, in some embodiments of the present invention, the elastic component includes two springs disposed at an interval, one end of each spring abuts against the second conduction block, and the other end of each spring abuts against the housing.

Further, in some embodiments of the present invention, the pushing assembly includes a push rod abutting against the second conduction block, a fixture block disposed on the push rod, and a spring plate having one end disposed on the fixture block, and the other end of the spring plate is disposed on the housing; the position where the elastic sheet is connected with the shell is a first fixed point, the position where the elastic sheet is connected with the clamping block is a second fixed point, and when the first fixed point and the second fixed point are positioned on the same horizontal plane; the length of the elastic sheet is greater than the distance between the first fixed point and the second fixed point.

Further, in some embodiments of the present invention, the housing is provided with a first engaging groove, and the fastening block is provided with a second engaging groove; the two ends of the elastic sheet are respectively embedded into the first clamping groove and the second clamping groove.

Further, in some embodiments of the present invention, the pushing assembly further comprises a connecting block and a button detachably connected to each other; the connecting block is arranged at one end of the push rod far away from the second conduction block.

Furthermore, in some embodiments of the present invention, the connecting block is provided with a first limiting block, the button is sleeved on the connecting block, and a second limiting block adapted to the first limiting block is disposed on an inner side wall of the button.

Further, in some embodiments of the present invention, the housing is provided with a retaining sleeve, and the button portion is slidably inserted into the retaining sleeve.

Further, in some embodiments of the present invention, a third limiting block is disposed on an inner side wall of the limiting sleeve, and a limiting groove matched with the third limiting block is disposed on an outer side wall of the button.

Further, in some embodiments of the present invention, the limiting groove includes a first limiting groove, a second limiting groove and a third limiting groove which are sequentially communicated; the extending directions of the first limiting groove and the third limiting groove are parallel to the axial direction of the limiting sleeve, one end of the first limiting groove, which is far away from the second limiting groove, is open, and the other end of the third limiting groove, which is far away from the second limiting groove, is closed.

Further, in some embodiments of the present invention, an elastic member is disposed in the button, and the elastic member abuts against the connecting block.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

the embodiment of the application provides an emergency stop switch which comprises a shell, wherein two first conduction blocks are arranged on the shell at intervals, and a second conduction block used for communicating the two first conduction blocks is movably arranged on the shell; the casing is equipped with and is used for driving the first elastic component who switches on the equal butt of piece and two second, and the casing is equipped with and is used for driving the first promotion subassembly that switches on the piece that the second switches on away from of piece.

When the emergency stop switch is used, the emergency stop switch is arranged on a circuit, the two first conduction blocks are connected with two ends of the circuit in series respectively, and when the emergency stop switch is used normally, the second conduction block is driven by the elastic assembly to move to abut against the two first conduction blocks, so that current enters one first conduction block through the circuit firstly, is transmitted to the other first conduction block through the second conduction block, and finally flows out of the circuit to realize the passage of the circuit.

When emergency appears, the second conduction block is driven by the pushing assembly to be far away from the two first conduction blocks, and due to the fact that the two first conduction blocks are arranged at intervals, current cannot flow after the second conduction block is disconnected with the first conduction blocks, and therefore the whole circuit is broken.

The emergency stop switch is simple in structure, few in accessories, production cost is reduced, and potential safety hazards are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

FIG. 1 is a cross-sectional view of an emergency stop switch provided in accordance with an embodiment of the present invention, shown prior to disconnection;

FIG. 2 is a cross-sectional view of an embodiment of the present invention showing the emergency stop switch in the off position;

FIG. 3 is a front view of an emergency stop switch provided by an embodiment of the present invention;

FIG. 4 is a side view of an emergency stop switch provided in accordance with an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a button provided by an embodiment of the present invention;

FIG. 6 is a front view of a button provided by an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a first conductive block according to an embodiment of the present invention.

An icon: 1-button, 2-shell, 3-cover, 4-connecting block, 5-push rod, 6-elastic piece, 7-clamping block, 8-first clamping groove, 9-second clamping groove, 10-elastic piece, 11-first conducting block, 12-second conducting block, 13-spring, 14-wiring port, 15-contact, 16-first screw hole, 17-second screw hole, 18-first limiting block, 19-second limiting block, 20-third limiting block, 21-first limiting groove, 22-second limiting groove, 23-third limiting groove and 24-limiting sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an orientation or a positional relationship based on an orientation or a positional relationship shown in the drawings, or an orientation or a positional relationship which is usually placed when the utility model is used, it is only for convenience of description and simplification of description, but does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Example 1

Referring to fig. 1 to 7, an embodiment of the present application provides an emergency stop switch, which includes a housing 2, two first conduction blocks 11 are disposed on the housing 2 at intervals, and a second conduction block 12 for communicating the two first conduction blocks 11 is movably disposed on the housing 2; casing 2 is equipped with the elastic component who is used for driving first switch on piece 11 and the equal butt of two second switch on pieces 12, and casing 2 is equipped with the promotion subassembly that is used for driving first switch on piece 11 and keeps away from second switch on piece 12.

When using, locate the circuit with the scram switch, two first break-over pieces 11 are established ties with the circuit both ends respectively, and during normal use, through elastic component drive second break-over piece 12 remove to with two first break-over pieces 11 butt, make electric current pass through the circuit earlier and get into a first break-over piece 11, pass through second break-over piece 12, transmit another first break-over piece 11, the circuit that flows out at last realizes the route of circuit.

When an emergency occurs, the second conduction block 12 is driven by the pushing assembly to be far away from the two first conduction blocks 11, and due to the fact that the two first conduction blocks 11 are arranged at intervals, current cannot flow after the second conduction block 12 is disconnected with the first conduction blocks 11, and therefore the whole circuit is broken. The emergency stop switch of this embodiment, simple structure, the accessory is less, has reduced manufacturing cost, has reduced the potential safety hazard.

Optionally, the first conducting block 11 and the second conducting block 12 of this embodiment are both detachably connected to the housing 2, the housing 2 is provided with a fixing groove, and the first conducting block 11 is embedded in the fixing groove of the housing 2.

Optionally, the second conducting block 12 and the first conducting block 11 of this embodiment are provided with a contact 15 at the abutting position, so that the stability of passing current during communication is increased.

Optionally, the first conducting block 11 of this embodiment is L-shaped, so that the first conducting block 11 is more stable after being embedded into the housing 2; the second via block 12 may be provided as a flat plate. A part of the first conduction block 11, which is far away from the contact 15, is provided with a wiring port 14, the wiring port 14 is fixedly connected with a nut, and a cable in the circuit is fixed on the first conduction block 11 through a bolt, so that the first conduction block 11 is stably and electrically connected with the circuit.

Optionally, the first conducting block 11 and the second conducting block 12 of this embodiment may both be made of copper, and the nut is made of stainless steel.

Optionally, the housing 2 of this embodiment is provided with a through hole, the two ends of the through hole of the housing 2 are both provided with the covers 3, the edge of each cover 3 is provided with four mounting holes at intervals, the housing 2 is provided with a first screw hole 16 corresponding to the housing 2, and the bolt penetrates through the mounting hole and is connected with the screw hole, so as to connect the cover 3 to the housing 2, thereby enabling the cover 3 to shield the through hole of the housing 2.

Optionally, the housing 2 of this embodiment is provided with two second screw holes 17 for mounting the emergency stop switch on other devices through a threaded connection.

Example 2

Referring to fig. 1 to 7, in some embodiments of the present invention, the elastic component includes two springs 13 disposed at an interval, one end of the spring 13 abuts against the second conduction block 12, and the other end of the spring 13 abuts against the housing 2.

This embodiment is through being equipped with the spring 13 that two intervals set up, and spring 13 locates the second and switches on piece 12 below, switches on piece 12 and two first 11 butts through spring 13 drive second, and it is more stable to make second switch on piece 12 be connected with two first 11 that switch on.

Optionally, the housing 2 of this embodiment is provided with a fixing groove for limiting the spring 13, and the first conduction block 11 is provided with a third limiting block 20 for limiting the spring 13; one end of the spring 13 is embedded into the fixing groove, and the third limiting block 20 is embedded into the other end of the spring 13, so that the spring 13 is less prone to displacement relative to the first conduction block 11.

Example 3

Referring to fig. 1 to 7, in some embodiments of the present invention, the pushing assembly includes a push rod 5 abutting against the second conduction block 12, a fixture block 7 disposed on the push rod 5, and an elastic sheet 10 having one end disposed on the fixture block 7, and the other end of the elastic sheet 10 is disposed on the housing 2; the position where the elastic sheet 10 is connected with the shell 2 is a first fixed point, the position where the elastic sheet 10 is connected with the clamping block 7 is a second fixed point, and when the first fixed point and the second fixed point are positioned on the same horizontal plane; the length of the elastic sheet 10 is greater than the distance between the first fixed point and the second fixed point.

When the scram switch of this embodiment is used normally, set push rod 5 as initial state, because the length of shell fragment 10 is greater than the distance when first fixed point and second fixed point are located same horizontal plane, the one end tilt up of fixture block 7 is located to shell fragment 10, shell fragment 10 gives 7 ascending thrusts of fixture block, makes fixture block 7 butt casing 2, drives push rod 5 through fixture block 7, is fixed in the second with push rod 5 and switches on 12 tops, the second switches on 12 and is driven by elastic component, two first switch-on blocks 11 of butt.

When an emergency occurs, the push rod 5 is pressed to drive the second conduction block 12 to be away from the two first conduction blocks 11, and because the two first conduction blocks 11 are arranged at intervals, the current cannot flow after the second conduction block 12 is disconnected from the first conduction blocks 11, so that the whole circuit is broken. Because the fixture block 7 fixed on the push rod 5 is displaced along with the push rod 5, the elastic sheet 10 is driven to be arranged at one end of the fixture block 7 to move, when the fixture block 7 passes through the horizontal plane of the first fixed point and continues to move downwards, because the length of the elastic sheet 10 is greater than the distance between the first fixed point and the second fixed point which are positioned on the same horizontal plane, the elastic sheet 10 is arranged at one end of the fixture block 7 to incline downwards, the elastic sheet 10 provides downward thrust for the fixture block 7, the push rod 5 is fixed, and the second conduction block 12 abutted to the push rod 5 is fixed at the position far away from the two first conduction blocks 11.

Alternatively, the elastic sheet 10 of the present embodiment may be a metal sheet.

Example 4

Referring to fig. 1 to 7, in some embodiments of the present invention, the housing 2 is provided with a first engaging groove 8, and the fastening block 7 is provided with a second engaging groove 9; two ends of the elastic sheet 10 are respectively embedded into the first clamping groove 8 and the second clamping groove 9.

This embodiment is through setting up first draw-in groove 8 and second draw-in groove 9, with shell fragment 10 embedding the inside, has strengthened the stability of shell fragment 10 when using to this stability of having strengthened push rod 5 when using prevents that shell fragment 10 from droing between casing 2 and the fixture block 7.

Example 5

Referring to fig. 1 to 7, in some embodiments of the present invention, the pushing assembly further includes a connecting block 4 and a button 1 detachably connected to each other; the connecting block 4 is arranged at one end of the push rod 5 far away from the second conduction block 12.

In the embodiment, by arranging the button 1, when an emergency occurs, the button 1 is pressed, the push rod 5 is driven by the button 1 to move downwards, and the contact area of the button 1 relative to the push rod 5 is larger, so that the button is more convenient to press; the push rod 5 is convenient for connecting the push button 1 and the push rod 5 by arranging the connecting block 4.

Example 6

Referring to fig. 1 to 7, in some embodiments of the present invention, the connecting block 4 is provided with a first limiting block 18, the button 1 is sleeved on the connecting block 4, and a second limiting block 19 adapted to the first limiting block 18 is disposed on an inner side wall of the button 1.

First stopper 18 and the second stopper 19 through supporting setting of this embodiment, 19 below of second stopper are located to first stopper 18, when needing to resume the intercommunication with the scram switch, apply an ascending pulling force for button 1, drive first stopper 18 through the second stopper 19 of button 1 inside wall and upwards remove to this drives connecting block 4 and the push rod 5 that is connected with connecting block 4 and upwards removes.

Optionally, two second limiting blocks 19 arranged at intervals are arranged on the inner side wall of the button 1 in the embodiment; when the push button is used, the first limiting block 18 is embedded into the middle of the two second limiting blocks 19, so that the push button 1 is more stably connected with the connecting block 4, and when the push button 1 is pressed downwards, the first limiting block 18 can be driven to move downwards through the second limiting blocks 19, and therefore the connecting block 4 and the push rod 5 connected with the connecting block 4 are driven to move downwards.

Optionally, the cross section of the connecting block 4 in this embodiment may be designed to be oval, when the button 1 and the connecting block 4 need to be installed, rotating the button 1 to make the second limiting block 19 of the button 1 align with the shortest end of the oval and then move downward, so that the connecting block 4 is partially sleeved on the button 1, and then rotating the button 1 to make the first limiting block 18 be embedded between the two second limiting blocks 19; when the button 1 needs to be detached from the connecting block 4, the button 1 is rotated to enable the first limiting block 18 to slide out from the middle of the two second limiting blocks 19, and then the second limiting blocks 19 are aligned with the shortest end of the ellipse to separate the button 1 from the connecting block 4.

Example 7

Referring to fig. 1 to 7, in some embodiments of the present invention, the housing 2 is provided with a position-limiting sleeve 24, and the button 1 is partially slidably inserted into the position-limiting sleeve 24.

In the embodiment, the limiting sleeve 24 is arranged, so that the button 1 is partially fixed between the limiting sleeve 24 and the connecting block 4, the stability of the button 1 and the push rod 5 is increased, and the displacement direction of the button 1 is also limited.

Example 8

Referring to fig. 1 to 7, in some embodiments of the present invention, a third limiting block 20 is disposed on an inner side wall of the limiting sleeve 24, and a limiting groove matched with the third limiting block 20 is disposed on an outer side wall of the button 1.

This embodiment is through the spacing groove that sets up

third stopper

20 and 1 lateral wall of button, and the button 1 of being convenient for is connected with dismantling of spacing sleeve 24.

Example 9

Referring to fig. 1 to 7, in some embodiments of the present invention, the limiting groove includes a first limiting groove 21, a second limiting groove 22 and a third limiting groove 23 which are sequentially connected; the extending directions of the first limiting groove 21 and the third limiting groove 23 are parallel to the axial direction of the limiting sleeve 24, one end of the first limiting groove 21, which is far away from the second limiting groove 22, is open, and one end of the third limiting groove 23, which is far away from the second limiting groove 22, is closed.

When the button is installed, the third limiting block 20 is aligned with the first limiting groove 21, the third limiting block 20 slides into the first limiting groove 21 from an opening of the first limiting groove 21, the button 1 rotates when reaching the top of the first limiting groove 21, the third limiting block 20 slides into the second limiting groove 22 and slides to the third limiting groove 23 through the second limiting groove 22 along with rotation, the extending direction of the third limiting groove 23 is parallel to the axial direction of the limiting sleeve 24, so that the sliding direction of the third limiting block 20 can be limited, and the third limiting block 20 is prevented from driving the limiting sleeve 24 to rotate with the button 1.

When the third limiting block 20 is detached, the third limiting block 20 slides from the third limiting groove 23 to the second limiting groove 22 by pressing, the third limiting block 20 slides to the first limiting groove 21 through the second limiting groove 22 by rotating, and then the third limiting block 20 slides to be taken out through the opening of the first limiting groove 21.

Example 10

Referring to fig. 1 to 7, in some embodiments of the present invention, an elastic member 6 is disposed in the button 1, and the elastic member 6 abuts against the connecting block 4.

This embodiment makes third stopper 20 when reaching third spacing groove 23 through second spacing groove 22 through setting up elastic component 6, and elastic component 6 takes place to deform between button 1 and connecting piece, has applyed a thrust of keeping away from the connecting piece for button 1, and button 1 drives third stopper 20 and slides to the direction of keeping away from second spacing groove 22, comes to the bottom of third spacing groove 23. Therefore, the third limiting block 20 is arranged at the bottom of the third limiting groove 23, and the stability of connection between the button 1 and the limiting sleeve 24 is improved.

In summary, an embodiment of the present invention provides an emergency stop switch, which is characterized in that: the device comprises a shell 2, wherein two first conduction blocks 11 are arranged on the shell 2 at intervals, and a second conduction block 12 used for communicating the two first conduction blocks 11 is movably arranged on the shell 2; casing 2 is equipped with the elastic component who is used for driving first switch on piece 11 and two second and switches on the equal butt of piece 12, and casing 2 is equipped with the promotion subassembly that is used for driving first switch on piece 11 and keeps away from second switch on piece 12.

When the emergency stop switch is used, the emergency stop switch is arranged on a circuit, the two first conduction blocks 11 are connected with two ends of the circuit in series respectively, and when the emergency stop switch is used normally, the second conduction block 12 is driven to move to the two first conduction blocks 11 in an abutting mode through the elastic assembly, so that current enters one first conduction block 11 through the circuit firstly, is transmitted to the other first conduction block 11 through the second conduction block 12, and finally flows out of the circuit to achieve the circuit path.

When an emergency occurs, the second conduction block 12 is driven to be far away from the two first conduction blocks 11 through the pushing assembly, and because the two first conduction blocks 11 are arranged at intervals, current cannot flow after the second conduction block 12 and the first conduction blocks 11 are disconnected, so that the whole circuit is broken.

The present invention has been described in terms of the preferred embodiment, and it is not intended to be limited to the embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An emergency stop switch, characterized in that: the device comprises a shell, wherein two first conduction blocks are arranged on the shell at intervals, and a second conduction block used for communicating the two first conduction blocks is movably arranged on the shell; the casing is equipped with and is used for driving first switch on piece and two the elastic component that the second switched on the equal butt of piece, the casing is equipped with and is used for driving first switch on piece is kept away from the promotion subassembly of second switch on piece.

2. The scram switch of claim 1, wherein: the elastic assembly comprises two springs arranged at intervals, one end of each spring is abutted to the second conduction block, and the other end of each spring is abutted to the shell.

3. The scram switch of claim 1, wherein: the pushing assembly comprises a push rod abutted against the second conduction block, a clamping block arranged on the push rod and an elastic sheet with one end arranged on the clamping block, and the other end of the elastic sheet is arranged on the shell; the position of the elastic sheet connected with the shell is a first fixed point, and the position of the elastic sheet connected with the clamping block is a second fixed point; when the first fixing point and the second fixing point are located on the same horizontal plane, the length of the elastic sheet is larger than the distance between the first fixing point and the second fixing point.

4. The scram switch of claim 3, wherein: the shell is provided with a first clamping groove, and the clamping block is provided with a second clamping groove; the two ends of the elastic sheet are respectively embedded into the first clamping groove and the second clamping groove.

5. The scram switch of claim 3, wherein: the pushing assembly further comprises a connecting block and a button which are detachably connected with each other; the connecting block is arranged at one end, far away from the second conduction block, of the push rod.

6. The scram switch of claim 5, wherein: the connecting block is equipped with first stopper, the button cover is located the connecting block, the button inside wall be equipped with the second stopper of first stopper looks adaptation.

7. The scram switch of claim 5, wherein: the shell is provided with a limiting sleeve, and the button part is embedded into the limiting sleeve in a sliding mode.

8. The scram switch of claim 7, wherein: the limiting sleeve inside wall is equipped with the third stopper, the button lateral wall be equipped with third stopper complex spacing groove.

9. The scram switch of claim 8, wherein: the limiting groove comprises a first limiting groove, a second limiting groove and a third limiting groove which are sequentially communicated; the extending direction of the first limiting groove and the third limiting groove is parallel to the axial direction of the limiting sleeve, the first limiting groove is far away from an opening at one end of the second limiting groove, and the third limiting groove is far away from a closing at one end of the second limiting groove.

10. The scram switch of claim 6, wherein: an elastic piece is arranged in the button and is abutted to the connecting block.