CN102280295A

CN102280295A - A switching device

Info

Publication number: CN102280295A
Application number: CN2011101486526A
Authority: CN
Inventors: 刘国强
Original assignee: Schneider Electric SE
Current assignee: Schneider Electric SE
Priority date: 2010-06-04
Filing date: 2011-06-03
Publication date: 2011-12-14
Anticipated expiration: 2031-06-03
Also published as: EP2393092A1; CN102280295B; SG176346A1

Abstract

Provided is a switching device operable between different set-points, comprising a rotary control handle adapted to switch between set-points, a sliding element adapted for protraction from a resting position to an elevated position to lock the control handle at any set-point and retraction from the elevated position to the resting position to unlock the control handle, a locking member comprising a shaft and a recess, said shaft is movable in response to the protraction and retraction of the sliding element and respectively into and out the recess so as to correspondingly lock and unlock the control handle, and means for selectively disabling the protraction of the sliding element at a designated set-point in a normal course of operation and selectively enabling the protraction when required.

Description

Switching device

Technical field

The present invention relates generally to a kind of switching device, relates more specifically to a kind of switching device that is used for motor control assembly etc.

Background technology

A kind of operational example such as motor control assembly, the switch of the electric device of circuit breaker etc. typically be installed in usually hold electric device the casing outside to operate this electric device.Need the locking of some form so that prevent accident or console switch and/or unexpected or open the door of casing without approval without approval.

In the prior art, Singapore's patent application discloses the switch that is combined with lock-in feature 200906594-7 number, and wherein said switch is rotary switch preferably.Those features that allow switch to lock are also combined so that for example " close (OFF) " and " opening (ON) " position locks at the set point of appointment.

For with Singapore patent application 200906594-7 number in switch like those disclosed Switch, determine according to the user, lock normally possible in " closing " and " opening " position.Yet, when these switches when factory transports, the lock function that adds of switch is often lost in " opening " position.

At present, deformability or fragile part are incorporated in the design of the switch that can buy on market.The user can be out of shape or break into pieces these parts so that can lock in " opening " position.Yet this process is irreversible.That is to say, lock in " opening " position can thereafter the forfeiture.

Usually, use deformability or fragile part to cause being used to make to lock the irreversible process of afunction.Thereby, when the user wishes that according to the operation requirement he or she does not just select when the set point manipulation of appointment adds lock function.This often causes inconvenience and set some restrictions to the user with can't deny with regard to adding lock function; Lack thus and make the user convenient.

Summary of the invention

The present invention is a kind of switching device that can operate between different set point, and this switching device comprises the Spin Control handle that is suitable for carrying out switch between set point; Be suitable for protracting to raised position to be withdrawn into position of rest to open the sliding members of joystick at any set point locking joystick and from raised position from position of rest; Comprise the axle and the locking component of groove, described can protracting and withdrawal campaign and enter respectively and leave described groove so that correspondingly lock and open described joystick in response to sliding members; And be used for the equipment that sliding members can not be protracted and optionally enable when needed to protract at the set point of appointment in normal operating process.

In this switching device, described equipment can be adjustable members, is used for optionally preventing that axle from entering into groove and optionally allowing axle to enter into groove.This adjustable members can be inserted in the groove to stop entering and being removable not stop that this enters of described groove.

This adjustable members can comprise the bar of columniform bar or tubulose.

In this switching device, adjustable members also can slide into the primary importance that enters that stops described groove and not stop the second place that this enters.Yet, the rotatable second place that enters into the primary importance of the inlet that stops described groove and do not stop this inlet of this adjustable members.

This adjustable members also can comprise the retractible raised member that is suitable for being fixed on releasedly in the groove.Alternatively, this groove also can comprise retractible raised member, and this adjustable members also can comprise the locking groove that is suitable for receiving retractible raised member.

The axle of this switching device can comprise the aperture that is suitable for the selectivity wedging and does not wedge axle.

The present invention still is a kind of switching device that can operate between different set point, and this switching device comprises the joystick of the rotation that is suitable for switching between set point; Be suitable for protracting to raised position to be withdrawn into position of rest to open the sliding members of joystick at any set point locking joystick and from raised position from position of rest; Comprise the axle and the locking component of groove, described can protracting and withdrawal campaign and enter respectively and leave described groove so that correspondingly lock and open described joystick in response to sliding members; And the passage that is communicated with described groove or axle, wherein Wai Bu adjustable members is insertable so that sliding members set point in appointment in course of normal operation can not protract.

This switching device also can comprise the storage recess that is suitable for receiving described adjustable members.

Description of drawings

With reference to accompanying drawing, only by example, from following written description, embodiments of the invention will be understood better by those skilled in the art and embodiments of the invention easier for those skilled in the art be conspicuous, wherein:

Fig. 1 represents the plane graph of embodiments of the invention;

Fig. 2 represents the perspective view of the cross section of the embodiment that sees as the line A-A ' from Fig. 1, and 2a illustrates the sliding members withdrawal; With 2b sliding members being shown extends;

Fig. 3 a represents the perspective view of cross section of the embodiment of the sliding members with extension seen as the line A-A ' from Fig. 1 and padlock (dotted line);

Fig. 3 b represent as the line D-D ' from Fig. 3 a see have as described in the plane graph of embodiment of padlock (dotted line);

Fig. 4 represents the bottom perspective view of the embodiment that sees as the line C-C ' from Fig. 2 b: 4a illustrates does not have adjustable members; Illustrate with 4b and to have adjustable members;

Fig. 4 c represents the perspective view of the cross section of the embodiment with adjustable members that sees as the line E-E ' from Fig. 4 b;

The perspective view of the embodiment of the adjustable members among Fig. 4 d presentation graphs 4b;

Fig. 5 a represents the bottom perspective view of another embodiment of seeing as the line C-C ' from Fig. 2 b, and wherein adjustable members is in primary importance;

The perspective view of the embodiment of the adjustable members among Fig. 5 b presentation graphs 5a;

Fig. 5 c represents the perspective view of cross section of the amplification of the embodiments of the invention seen as the line F-F ' from the territory, circle settlement 51 of Fig. 5 a;

Fig. 5 d represents the bottom perspective view of the embodiments of the invention seen as the line C-C ' from Fig. 2 b, and wherein adjustable members is in the second place;

Fig. 5 e represents the perspective view of cross section of the amplification of the embodiments of the invention seen as the line G-G ' from the territory, circle settlement 53 of Fig. 5 d;

Fig. 6 represents the bottom perspective view of an embodiment more of the present invention seen as from the line C-C ' of Fig. 2 b (being orientated 90 degree clockwise), and 6a represents that adjustable members can remove from this embodiment; 6b represents that adjustable members is in primary importance;

The perspective view of the embodiment of the adjustable members among Fig. 6 c presentation graphs 6a or the 6b;

Fig. 6 d represents the viewgraph of cross-section of the amplification of the embodiments of the invention that the line H-H ' as the territory, circle settlement 61 from Fig. 6 b sees;

Fig. 6 e represents that wherein said adjustable members is in the second place as the bottom perspective view of the embodiments of the invention of seeing from the line C-C ' of Fig. 2 b (being orientated 90 degree clockwise);

Fig. 6 f represents the viewgraph of cross-section of the amplification of the embodiments of the invention that the line I-I ' as the territory, circle settlement 63 from Fig. 6 e sees;

Fig. 7 represents that 7a represents that adjustable members rotates to primary importance as the bottom view of an embodiment more of the present invention from seeing as the line C-C ' (being orientated 90 degree clockwise) from Fig. 2 b; Represent that with 7b adjustable members rotates to the second place;

The perspective view of the embodiment of the adjustable members among Fig. 7 c presentation graphs 7a or the 7b;

Fig. 7 d represents the end view of cross section of the amplification of the embodiments of the invention seen as the line J-J ' from the territory, circle settlement 71 of Fig. 7 a;

Fig. 7 e represents the end view of cross section of the amplification of the embodiments of the invention seen as the line K-K ' from the territory, circle settlement 73 of Fig. 7 b;

Fig. 7 f represent as from as the flow chart that comprises bottom view of the embodiments of the invention seen from the line C-C ' of Fig. 2 b (being orientated 90 degree clockwise), (i) adjustable members rotates to the second place in first place; (ii) adjustable members rotates to primary importance in this first place; (iii) adjustable members rotates to primary importance in second place; And (iV) adjustable members rotates to the second place in second place;

Fig. 8 represents the end view of the cross section of the amplification of an embodiment more of the present invention that the line B-B ' as the territory, circle settlement 11 from Fig. 1 sees, it is wedged that 8a illustrates axle; With 8b illustrate the axle not wedged;

Fig. 9 represents the end view of the cross section of the amplification of an embodiment more of the present invention that the line B-B ' as the territory, circle settlement 11 from Fig. 1 sees, it is wedged that 9a illustrates axle; With 9b illustrate the axle not wedged.

Embodiment

But being a kind of set points in appointment, embodiments of the invention have the switching device that adds lock feature that adds lock feature and inverse operation, the switch that wherein said switching device preferably rotates.With reference to accompanying drawing, Fig. 1 represents a kind of switching device 100, and it comprises the joystick 102 of rotation, sliding members 104 and housing 106.This switching device 100 can be installed on the outer surface of casing of electronic installation of motor control assembly for example or circuit breaker (not shown in the accompanying drawings) and be suitable for being connected to this electronic installation.

In a preferred embodiment, the joystick 102 of rotation can rotate between first set point (as shown in Figure 1) and second set point, and wherein said handle is with respect to shown in Figure 1 being orientated with clockwise 90 degree.First and second set points are corresponding to " ON " position and " OFF " position of switching device 100.In this embodiment, Fig. 1 represents to navigate to the joystick 102 of set point of the appointment of " ON " position.

In the preferred embodiment of Fig. 2 a, the perspective cross-sectional view of switching device 100 that joystick 102 navigates to " ON " position of appointment represents to be couple to the structure of the sliding members 104 of actuator 200, and this actuator 200 is couple to axle 202 again.In case as promote sliding members 104 by directional arrow 20 on the indicated downward direction, axle 202 being actuated from groove 204 withdrawals via actuator 20.In this embodiment, groove 204 is formed in the housing 106.

When sliding members 104 as by directional arrow 22 indicated upwards promote upward the time, axle 202 protracts in groove 204, shown in Fig. 2 b.In this configuration, joystick 102 is locked in " ON " position of appointment; Make thus and can not switch to different set points.Padlock 300 (shown in the dotted line among Fig. 3 a) can be used to keep making axle 202 to protract and correspondingly remain on latched position in groove 204 and with joystick 102.Fig. 3 b represents the vertical view of sliding members 104 by the switching device 100 of padlock 300 (dotted line) locking.

Switching device of the present invention allows the user can select to hinder or does not allow ability by making the axle that is communicated with sliding members can not protract and come the sliding members of usefulness padlock locking switch device in the groove.The user also can select allow to use identical switching device to use this ability of the sliding members of padlock locking switch device in the groove once more by axle is protracted.Forbidding-enable that (disabling-enabling) axle protracts depends on user's requirement and is reversible, that is to say, and conversion between the user can forbid-enabling, vice versa.This switching device is the set point in appointment, and more specifically the function that locks in " ON " choice of location provides easily a kind of, at user option and reversible method.

Fig. 4 a-4d represents of the present inventionly reversibly to forbid and enable the embodiment that axle 202 protracts (not shown in Fig. 4 a).In Fig. 4 a, the bottom view of described embodiment represents to comprise the housing 106 of groove 204, and this groove passes the back side that arrives housing 106.In Fig. 4 b, forbid that axle 202 equipment that comprise adjustable members 400 that protract (not shown in Fig. 4 b) can be inserted into the groove 204 from the back side of housing 106 and can remove (not shown in Fig. 4 b) from groove 204.

Shown in Fig. 4 c, be inserted in adjustable members 400 under the situation of groove 204 (not shown in Fig. 4 c), axle 202 is entered into groove 204 by adjustable members 400 preventions.This has prevented that again sliding members 104 is raised on as the direction that makes progress by directional arrow 40 indications.Can not promote sliding members 104 away from joystick 102 can cause not having enough spaces to hold padlock 300 (not shown in Fig. 4 c).

The embodiment of adjustable members 400 is the columniform bar shown in Fig. 4 d preferably.The adjustable members 400 of this columniform bar comprises main body 402, and this main body has along the ring 404 of this main body 402 axial location and the head 406 that is positioned at an end of main body 402.Each all has girth than the Zhou Changda of main body 402 head 406 and ring 404.Together with reference Fig. 4 c, main body 402 can be inserted in the groove 204 (not shown in Fig. 4 c).In case insert main body 402 engagement shafts 202 fully; Block axis 202 and forbid that axle 202 protracts thus.

Ring 404 is used for relative housing 106 and wedges adjustable members 400.Head 406 is convenient to easily adjustable members 400 is inserted into groove 204 and extract adjustable members 400 out (not shown in Fig. 4 c) from groove 204.The main body 402 of adjustable members 400 has and the analogous total height of the total length of groove 204.In case be inserted into fully in the groove 204, the head 406 of adjustable members 400 flushes with the back side of housing 106.

Groove 204 also can maybe can form a part of (not shown) of passage with channel connection.This passage allows adjustable members 400 to insert so that sliding members 104 can not be protracted at the set point of appointment.This adjustable members 400 can be a kind of outside adjustable members.

Another embodiment of adjustable members 400 is a kind of bar of tubulose (not shown in the accompanying drawings) preferably.

Fig. 5 a-5e represents of the present inventionly reversibly to forbid and enable another embodiment that axle 202 protracts (not shown in Fig. 5 a).In Fig. 5 a, the bottom view of this embodiment represents to comprise the housing 106 of the device of forbidding and enable that axle 202 (not shown in Fig. 5 a) protract, and described device is an adjustable members 500.

The embodiment of adjustable members 500 is the U-shaped elements shown in Fig. 5 b.The adjustable members 500 of U-shaped element comprises top barrier plate 504 and bottom barrier plate 506.Plate groove 502 is arranged on the barrier plate 506 of bottom.

With reference to Fig. 5 c, adjustable members 500 on by the outward direction shown in the directional arrow 50 slidably to top barrier plate 504 not by the primary importance of placing along the path of axle 202 and groove 204.Thereby, enable axle 202 by lifting sliding members 104 and protract; Allow lock (not shown in Fig. 5 c) of switching device 100 thus.

In Fig. 5 d and 5e, adjustable members 500 can on by the inward direction shown in the directional arrow 52 slidably to top barrier plate 504 along axle 202 and the path of groove 204 second place of placing.Thereby, forbid that therefore axle 202 protracts because top barrier plate 504 contacts with axle 202, thereby stopped that axle 202 enters into groove 204; Do not allow sliding members 104 to be raised and correspondingly to hinder lock (not shown in Fig. 5 e) of switching device thus.

Plate groove 502 is beneficial to easy operation adjustable members 500, more specifically, is not for example promoting to make adjustable members 500 to slide on plate groove 502 by the use flathead screwdriver under the too big situation of difficult to allow the user.Plate groove 502 also can be used to relative housing 106 wedgings.

Based on similar design, substitute slidably adjustable members, another embodiment of the present invention (not shown in the accompanying drawings) can comprise the rotatable adjustable members with top barrier plate.In this embodiment, adjustable members can axially be rotated its top barrier plate is brought into the primary importance of the inlet that stops described groove and does not stop the second place of this inlet.

Fig. 6 a-6f represents of the present inventionly reversibly to forbid and enable the embodiment again that axle 202 protracts (not shown in Fig. 6 a).In Fig. 6 a, the bottom view of this embodiment represents to comprise the housing 106 of groove 204 and holder 602, and this holder 602 comprises storage recess 604.This housing 106 also holds forbids and enables the equipment that axle 202 protracts (not shown in Fig. 6 a) that this equipment is adjustable members 600.

Fig. 6 b represents to be arranged on adjustable members 600 in the storage recess 604 with the configuration that stores.This adjustable members 600, size is less relatively and can remove from switching device 100, in use can be easily misplaced the place.In the configuration that stores, adjustable members 600 can be stored in the switching device 100 safely so that use in the future.This can advantageously reduce the risk that adjustable members 600 is lost.

The embodiment of adjustable members 600 is shown among Fig. 6 c.Adjustable members 600 comprises main body 606, in head 608 and a plurality of raised member 610 of an end of main body 606.Head 608 has than the girth of the Zhou Changda of main body 606 extracts (not shown in Fig. 6 c) out so that easily adjustable members 600 is inserted into groove 204 neutralizations from groove 204.In the configuration that stores of Fig. 6 b, raised member 610 (not shown in Fig. 6 b) allows that adjustable members 600 is wedged in the housing 106, in the storage recess 604 (not shown in Fig. 6 b).Preferably, raised member 610 be spring biasing or make by elastomeric material.

Fig. 6 d shows in the configuration that stores, in case promote sliding members 104, as by shown in the directional arrow 60, axle 202 protracted in groove 204 (not shown in Fig. 6 d).

Fig. 6 e and 6f represent to be arranged on the adjustable members 600 (not shown in Fig. 6 e and 6f) in the groove 204.Main body 606 can be inserted in the groove 204.In case insert fully, the main body 606 of adjustable members 600 (not shown in Fig. 6 e and 6f) contacts with spools 202; Block axis 202 and forbid that when attempting to promote sliding members 104 axle 202 is protracting on by the direction shown in the arrow 62 that points to thus.Raised member 610 (not shown in Fig. 6 e and 6f) allows adjustable members 600 to be wedged in the groove 204.

Fig. 7 a-7f represents of the present inventionly reversibly to forbid and enable the embodiment again that axle 202 protracts (not shown in Fig. 7 a).In Fig. 7 a, the bottom view of this embodiment represents to comprise the housing 106 of holder 702, and this holder 702 comprises storage recess 704.This housing 106 also holds forbids and enables the equipment that axle 202 protracts (not shown in Fig. 6 a) that this equipment is adjustable members 700.In Fig. 7 a, adjustable members 700 is (not shown among Fig. 7 a) in primary importance is arranged on groove 204 and along as rotatable by the direction shown in the directional arrow 70.Fig. 7 b represents to rotate to the adjustable members 700 of the second place.Adjustable members 700 can be arranged in the storage recess 704 from the configuration (not shown) that groove 204 removes and can store.

The embodiment of adjustable members 700 is shown among Fig. 7 c.Adjustable members 700 comprises main body 706, at the head 708 and the retractible protruding component 710 of an end of main body 706.Head 708 has than the girth of the Zhou Changda of main body 706 extracts (not shown in Fig. 7 c) out so that easily adjustable members 700 is inserted into groove 204 neutralizations from groove 204.Head 708 also comprises slit 712, and for example external tool (not shown) of flathead screwdriver is inserted in its permission, is beneficial to easily adjustable members 700 is rotated action.

For example, in for the factory that transports the switching device 100 that purpose prepares, adjustable members 700 is inserted in the groove 204 on the orientation shown in Fig. 7 a.Fig. 7 d represents the end view of the cross section of the adjustable members 700 inserted.Adjustable members 700 is rotated to the orientation shown in Fig. 7 b then.Fig. 7 e represents the end view of the cross section of postrotational adjustable members 700, and wherein retractible protruding component 710 is positioned to aim at (not shown in Fig. 7 e) with the locking edge 714 of housing 106.This structure of locking edge 714 and retractible protruding component 710 can prevent before switching device 100 being installed on the door of the casing that holds electric device (not shown in Fig. 7), adjustable members 700 switching device 100 transport in the process or when the personnel of installation switching device 100 start drag sliding members 104 accident drop.Switching device transports under adjustable members 700 is inserted into state in the groove 204 usually; Forbid that thus axle 202 protracts and prevents to enter into groove 204.

In order to use, the user can select to forbid that axle 202 (not shown) protract, and shown in Fig. 7 b, perhaps enables axle 202 (not shown) by the step of execution shown in Fig. 7 f and protracts.Adjustable members 700 is as rotating to the orientation shown in (ii) as Fig. 7 f on by the direction shown in the arrow 72 that points to.In this orientation, adjustable members 700 can remove and can put into the storage recess 704 from groove 204 (not shown), and is (iii) being seen as Fig. 7 f.By on by the direction shown in the directional arrow 74, rotating adjustable members 700, adjustable members 700 is fixed in the storage recess 704, (iv) being seen as Fig. 7 f, retractible thus protruding component 710 (not shown in Fig. 7 f) is locked in the storage recess 704.Switching device 100 configuration for storing now wherein can protract axle 202 by promoting sliding members 104 (not shown).

As shown in Figure 7, locking edge 714 and retractible protruding component 710 prevent the configuration that adjustable members 700 accidents drop or unconsciously remove, can realize (not shown in the accompanying drawings) in another embodiment, wherein locking edge or locking groove can be positioned on the adjustable members and retractible protruding component alternately is positioned on the groove that receives adjustable members.In this embodiment, by carrying out as the described similar step of Fig. 7 f, adjustable members can be fixed in the groove releasedly.

Fig. 8 a-8b represent of the present invention reversibly forbid and enable the axle 202 embodiment again that protract.In Fig. 8 a, axle 202 comprises two apertures 804,806.Can on by the direction shown in each directional arrow 80,82, be inserted in the corresponding aperture 804,806 such as the adjustable members that is contained in the wedge pin 800,802 in the switching device 100 (not shown in Fig. 8 a and 8b).In the case, axle 202 is prevented from entering into groove 204; Hinder thus and promote sliding members 104 (not shown in Fig. 8 a and 8b).

In Fig. 8 b, wedge pin 800,802 is moving away from axle 202 on by the direction shown in each directional arrow 84,86.This axle no longer is prevented from entering into groove 204 now.

Fig. 9 a-9b represents based on reversibly forbidding with the similar working principle of the embodiment of Fig. 8 a-8b of the present invention and enabling axle 202 embodiment again that protract.In Fig. 9 a, axle 202 comprises through hole aperture 902.Adjustable members such as wedge pin 900 is passed 902 insertions of through hole aperture on by the direction shown in the directional arrow 90.Wedge pin 900 prevents that axle 202 from entering into groove 204.Fig. 9 b represents that wedge pin 900 is removing from through hole aperture 902 on by the direction shown in the directional arrow 92.In this embodiment, when promoting sliding members 104 (not shown), allow axle to enter into groove 204 now.

Fig. 8 and 9 described embodiment also can comprise and axle 202 passages that are communicated with.The aperture can form the part of passage.Thereby this passage allows adjustable members to be inserted in normal operating process forbids that sliding members 104 protracts at the set point of appointment.This adjustable members can be outside adjustable members.

It will be understood by those skilled in the art that under situation about not deviating from, can carry out many changes and/or modification the present invention shown in specific embodiment as described the spirit or scope of the present invention roughly.Therefore, embodiments of the invention should be considered to illustrating property rather than restrictive no matter from which side.

Claims

1. the switching device that can operate between different set points comprises:

Be suitable between set point, carrying out the Spin Control handle of switch;

Be suitable for protracting to raised position to lock described joystick at any set point and to be withdrawn into the sliding members of described position of rest with the described joystick of release from described raised position from position of rest;

Comprise the axle and the locking component of groove, described can be in response to the protracting and withdrawal campaign and enter respectively and break away from described groove of described sliding members, so that the described joystick of the locking and unlocking correspondingly; And

Be used for forbidding that optionally described sliding members protracts and optionally enabling the equipment that this protracts when needed at the set point of appointment in normal operating process.

2. switching device as claimed in claim 1, wherein said equipment is adjustable members, is used for optionally preventing that described axle from entering into described groove and optionally allowing described axle to enter into described groove.

3. switching device as claimed in claim 2, wherein said adjustable members can be inserted in the described groove to stop entering and being removable not stop that this enters of described groove.

4. switching device as claimed in claim 3, wherein said adjustable members comprises columniform bar.

5. switching device as claimed in claim 3, wherein said adjustable members comprises the bar of tubulose.

6. switching device as claimed in claim 2, wherein said adjustable members can slide into the primary importance that enters that stops described groove and not stop the second place that this enters.

7. switching device as claimed in claim 2, wherein said adjustable members is rotatable to be entered into the primary importance that enters that stops described groove and not to stop the second place that this enters.

8. according to each described switching device in the claim 2 to 7, wherein said adjustable members also comprises and is suitable for being fixed on releasedly retractible raised member in the described groove.

9. according to each described switching device in the claim 2 to 7, wherein this groove also comprises retractible raised member; And

Described adjustable members also comprises the locking groove that is suitable for receiving described retractible raised member.

10. according to each described switching device in the aforementioned claim, wherein said axle comprises the aperture that is suitable for the selectivity wedging and does not wedge described axle.

11. the switching device that can operate between different set point comprises:

The Spin Control handle that is suitable between set point, switching;

Be suitable for protracting to raised position to lock described joystick at any set point and to be withdrawn into described position of rest to free the sliding members of described joystick from described raised position from position of rest;

Comprise the axle and the locking component of groove, described can protracting and withdrawal campaign and enter respectively and leave described groove so that correspondingly lock and open described joystick in response to described sliding members; And

With the passage that described groove or described axle are communicated with, wherein Wai Bu adjustable members is insertable to forbid that described sliding members set point in appointment in course of normal operation protracts.

12., also comprise the storage recess that is suitable for receiving described adjustable members as each described switching device in the claim 2 to 11.