CN102891024B - Locking component of switch device and switch device - Google Patents
Locking component of switch device and switch device Download PDFInfo
- Publication number
- CN102891024B CN102891024B CN201110206850.3A CN201110206850A CN102891024B CN 102891024 B CN102891024 B CN 102891024B CN 201110206850 A CN201110206850 A CN 201110206850A CN 102891024 B CN102891024 B CN 102891024B
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- fastener
- shackle member
- connector
- switching device
- locked component
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Abstract
The invention relates to a locking component of a switch device, and the locking component comprises a clamping piece (20) and an operation piece (30) which is connected with the clamping piece, wherein the clamping piece can be driven to move between an unlocking position and a locking position through controlling the operation piece; the clamping piece comprises a connection piece (24), a clamping piece (26) and at least one assembling unit (28); the clamping piece can be connected with the operation piece through the connection piece; a clamping groove is arranged on the clamping piece; the clamping piece can be connected with the connection piece through the assembling unit and is capable of moving in the longitudinal direction of the engagement piece relative to the connection piece; and when the engagement piece is located at the unlocking position, the clamping groove can be clamped with the operation shaft of the switch device. According to the locking component with the structure, self adjustment can be carried out by a locking structure in a certain range according to the position of the operation shaft, so as to complete the function of locking the operation shaft.
Description
Technical field
The present invention relates to a kind of locked component, particularly relate to a kind of locked component of switching device, the invention still further relates to a kind of switching device with above-mentioned locked component.
Background technology
Existing switching device generally comprises a handle and an operating axis be fixedly connected with handle, is rotated to drive operating axis by rotary handle between open position and closing position, thus the closedown of control switch device and unlatching.General in order to prevent misoperation, also can design a locking device for pinning handle at open position, or pin handle at closing position.The latch-up structure of current lock device can not self-control, needs accurately location could use when mounted, and if in use part position offsets to some extent, cannot realize lock function with regard to possibly.
Summary of the invention
The object of this invention is to provide a kind of locked component of switching device, it can make latch-up structure according to the self-control within the specific limits of the position of operating axis, to complete the lock function to operating axis.
Another object of the present invention is to provide a kind of switching device with above-mentioned locked component, and it is easy to assembly, and result of use is good.
The invention provides the locked component of switching device, it comprises a fastener and an operating parts be connected with fastener, drive fastener to move between a unlocked position and a latched position by control operation part, wherein fastener comprises a connector, a shackle member and at least one module units.Fastener is connected with operating parts by connector.Shackle member is provided with a draw-in groove, and shackle member is connected with connector by module units, and can move up the vertical of fastener relative to connector, and when fastener is in latched position, draw-in groove can be connected in the operating axis of switching device.The fastener of locked component can according to the self-control within the specific limits of the position of operating axis, and to complete the lock function to operating axis, its structure is simple, easy for installation.
In a kind of exemplary embodiment of the locked component of switching device, the notch end face of draw-in groove is set to the inclined-plane that can slip into for operating axis.Said structure is simple, easily realizes.
In a kind of exemplary embodiment of the locked component of switching device, operating parts is a latch fitting being arranged on switchgear housing, and the dead bolt of latch fitting is fixedly connected with connector.Said structure can strengthen the fail safe of use.
In a kind of exemplary embodiment of the locked component of switching device, also comprise the dynamic resistance part that is fixed on switching device inside, when fastener moves to unlocked position, dynamic resistance part can provide a dynamic resistance power to fastener, and the moving direction that direction and the fastener of dynamic resistance power trend towards when moving from unlocked position to latched position is contrary.Dynamic resistance part can be at least one arc convex, fastener can be provided with the arc groove with arc convex relative set, and when fastener rotates to unlocked position, arc convex can slip in arc groove.Said structure can stop locked component to occur the situation of locking by mistake.
In a kind of exemplary embodiment of the locked component of switching device, module units comprises an elongated through hole and the projection that arranges corresponding to elongated through hole, elongated through hole can be arranged in shackle member, projection can be arranged on connector, or elongated through hole can be arranged on connector, projection can be arranged in shackle member, and projection can be arranged in elongated through hole, and projection can move in elongated through hole.
In a kind of exemplary embodiment of the locked component of switching device, module units comprises an elongated through hole and the screw that arranges corresponding to elongated through hole, elongated through hole can be arranged in shackle member, screw can be arranged on connector, or elongated through hole can be arranged on connector, screw can be arranged in shackle member, and screw can be arranged in elongated through hole, and screw can move in elongated through hole.
In a kind of exemplary embodiment of the locked component of switching device, connector has at least one projecting contact site on the joint face of shackle member and/or the joint face of shackle member SCCP connection-oriented part.Said structure can make that shackle member is easier to be moved relative to connector.
In a kind of exemplary embodiment of the locked component of switching device, fastener also comprises a return unit, return unit can connect connector and shackle member respectively, shackle member opposite joints in the longitudinal direction of fastener is made to have an initial position, and when shackle member leaves initial position, return unit provide one can order about all the time reset force that shackle member gets back to initial position.Said structure can make the draw-in groove on fastener more easily be engaged on operating axis.
Present invention also offers a kind of switching device, it comprises an above-mentioned locked component and an operating axis, and when the fastener of locked component is in latched position, the draw-in groove of shackle member can be connected in operating axis.
Hereafter by clearly understandable mode, accompanying drawings preferred embodiment, is further described the above-mentioned characteristic of the locked component of switching device and switching device thereof, technical characteristic, advantage and implementation thereof.
Accompanying drawing explanation
The following drawings only schematically illustrates the present invention and explains, not delimit the scope of the invention.
Fig. 1 is the perspective exploded view of a kind of exemplary embodiment of the locked component of switching device.
Fig. 2 is the perspective view of a kind of exemplary embodiment after the locked component combination of switching device.
Fig. 3 is a kind of working state schematic representation of fastener shown in Fig. 1 and Fig. 2.
Fig. 4 is the structural representation of another operating state of the locked component of switching device shown in Fig. 2.
Fig. 5 is the perspective exploded view of a kind of exemplary embodiment of fastener.
Fig. 6 is the perspective view after the combination of fastener shown in Fig. 5.
Fig. 7 is the operating diagram of the module units in Fig. 5.
Fig. 8 is the perspective exploded view of the another kind of exemplary embodiment of fastener.
Fig. 9 is the perspective view after the combination of fastener shown in Fig. 8.
Figure 10 is the operating diagram of the module units in Fig. 8.
Label declaration
12 handles
14 shells
16 operating axis
20 fasteners
22 arc grooves
24 connectors
25 return units
26 shackle member
262 draw-in grooves
28 module unitss
282 elongated through holes
284 screws
286 is protruding
29 contacts
30 operating parts
32 dead bolts
40 fixed heads
42 dynamic resistance parts
50 keys
Embodiment
In order to the technical characteristic to invention, object and effect have understanding clearly, now contrast accompanying drawing and the specific embodiment of the present invention is described, label identical in the various figures represents the identical or structural similarity of structure but the identical parts of function.
For making simplified form, only schematically show part related to the present invention in each figure, they do not represent its practical structures as product.
In this article, the restriction in the mathematics of " parallel ", " vertically " etc. non-critical and/or geometry meaning, it also can comprise it will be appreciated by those skilled in the art that and manufacture or use the error allowed during this product.In addition, in this article, " connection " namely can represent that two parts connect rear relatively-stationary situation, also can represent that two parts can be movable relatively situation after connecting.
Fig. 1 is the perspective exploded view of a kind of exemplary embodiment of the locked component of switching device, for the position relationship of miscellaneous part on clearer expression locked component and switching device, miscellaneous part in Fig. 1 on switching device also represented by dashed line, shown in dotted line, handle 12 is arranged on the shell 14 of switching device, and can be fixedly connected with operating axis 16, handle 12 can rotate between open position (in figure OFF position) and closing position (in figure ON position), rotates to drive operating axis 16 closedown and the unlatching that carry out control switch device together.
As shown in Figure 1, the locked component of switching device comprises a fastener 20 and an operating parts 30.Fastener 20 has a longitudinal direction relative to operating axis, please refer to the direction of arrow in figure, fastener 20 comprises a connector 24, shackle member 26 and a module units 28, and connector 24 is connected by module units 28 with shackle member 26, and shackle member 26 is provided with a draw-in groove 262.After fastener 20 is connected with operating parts 30 by connector 24, fastener 20 is driven to rotate between a latched position and a unlocked position by control operation part 30, fastener 20 shown in Fig. 1 is in latched position, now draw-in groove 262 and operating axis 16 clamping mutually, please also refer to Fig. 2 and Fig. 3, Fig. 2 is the perspective view of a kind of exemplary embodiment after the locked component combination of switching device, Fig. 3 is a kind of working state schematic representation of fastener shown in Fig. 1 and Fig. 2, due to operating axis 16 and draw-in groove 262 clamping of shackle member 26, thus the rotation of restriction operating axis 16, the rotation of restriction handle 12 (referring to Fig. 1), handle 12 is made to be in locking-in state.If need to untie locking-in state, only need according to shown in Fig. 3 dotted line, fastener 20 (referring to Fig. 1) is moved to its unlocked position, now draw-in groove 262 and operating axis 16 not clamping, the rotation of operating axis 16 can not be limited, also just can not limit the rotation of handle 12 (referring to Fig. 1).
Fig. 1, Fig. 2 are connected by a module units 28 with shackle member 26 with the connector 24 in Fig. 3, and by module units 28, shackle member 26 can move up the vertical of fastener 20 relative to connector 24.When fastener 20 moves towards its latched position, namely when shackle member 26 moves towards operating axis 16, if draw-in groove 262 can not accurate snap-action axle 16, operating axis 16 can push card fitting 26 longitudinally moving relative to connector 24 along fastener 20, and operating axis 16 is connected in draw-in groove 262.
For completing the above-mentioned functions of shackle member 26, the notch end face of draw-in groove 262 can be set to the inclined-plane that can slip into for operating axis 16, refer to Fig. 3.But according to the difference that design needs, also other clamping form and structure can be adopted between notch 262 and operating axis 16, such as notch 262 can be designed to rectangle, operating axis 16 is designed to cross section and becomes hexagonal operating axis, the hypotenuse on hexagon can be utilized to contact with rectangular notch, with push card fitting longitudinally moving relative to connector, until cross section becomes hexagonal operating axis can be connected in draw-in groove along fastener.The locked component with above-mentioned functions can make fastener 20 according to the self-control within the specific limits of the position of operating axis 16, to complete the lock function to operating axis.So need not the position of accurate locator card component 20 when installing, even and if in use, the position between fastener 20 and operating axis 16 slightly changes, draw-in groove 262 still can be fastened on operating axis 16, completes lock function.
Operating parts 30 shown in Fig. 1 also can be a latch fitting be arranged on shell 14, and the dead bolt 32 of latch fitting is fixedly connected with fastener 20, a key 50 can be inserted in the lockhole on latch fitting, and drives fastener 20 to rotate by rotating key 50.Use key 50 just can the locking-in state of joystick 12 because only have, improve the safety in utilization of switching device.Such as, but according to the difference that design needs, operating parts 30 also can adopt its structure, and the annexation of operating parts 30 and fastener 20 also can adopt other forms, and, operating parts 30 can be a handles, direct and fastener 20 connects as one.In addition, according to the difference that design needs, fastener 20 also can adopt other structures, moves between unlocked position and latched position with other forms, and such as, fastener can slide along a straight line and move between unlocked position and latched position.
The locked component of the switching device shown in Fig. 2 also comprises the dynamic resistance part 42 that is fixed on switching device inside, the working method of dynamic resistance part 42 is understood incorporated by reference to Fig. 3 and Fig. 4, bold portion in the latched position of fastener 20 and Fig. 3, the dotted portion in the unlocked position of fastener 20 and Fig. 3.Fastener 20 shown in Fig. 4 is in its unlocked position, dynamic resistance part 42 in Fig. 4 is two arc convex, and fastener 20 is provided with two arc grooves 22 (can simultaneously with reference to figure 1), when fastener 20 rotates to unlocked position, arc convex can be slipped in the arc groove 22 on fastener 20, now dynamic resistance part 42 can provide a dynamic resistance power to fastener 20, dynamic resistance power can stop fastener 20 to move from current unlocked position to latched position, automatically latched position is moved to from its unlocked position with the impact such as prevent fastener 20 vibrated, avoid locking by mistake, when needs lock, after operating personnel's control operation part 30 (referring to Fig. 1) makes the operating physical force acting on fastener 20 be greater than dynamic resistance power, fastener 20 just can be made to move to its latched position from its unlocked position, complete locking.Dynamic resistance part 42 in Fig. 2 and Fig. 4 is arranged on the fixed head 40 of a switching device inside, but according to the difference that design needs, dynamic resistance part 42 also can be arranged on other positions of switching device inside, such as, can directly be fixed on the inwall of switchgear housing 14.Dynamic resistance part in Fig. 2 is designed to arc convex, a dynamic resistance power can be provided slip into the arc groove 22 on fastener 20 when it after, but according to the difference that design needs, the position of arc groove 22 on fastener 20 can be different, can not also design arc groove 22 on fastener 20, dynamic resistance part 42 also can be designed to other structures to provide dynamic resistance power, such as, fastener 20 and dynamic resistance part 42 can be made, using the magnetic force between dynamic resistance part 42 and fastener 20 as dynamic resistance power with magnetic material.In addition in said structure, fastener 20 rotates around a fixed axis, and can be subject at unlocked position the dynamic resistance power that dynamic resistance part 42 provides, it will be appreciated by those skilled in the art that, when fastener 20 slides along a straight line and moves between unlocked position and latched position, also can design corresponding dynamic resistance part 42 and realize above-mentioned functions.
A module units 28 is only provided with in Fig. 1, Fig. 2 and Fig. 3, module units 28 comprises an elongated through hole 282 and the screw 284 that arranges corresponding to elongated through hole 282, elongated through hole 282 is arranged in shackle member 26, screw 284 can be arranged on connector 24 through elongated through hole 282, screw 284 and elongated through hole 282 form clamping, and screw 284 can move in elongated through hole 282, shackle member 26 can be moved up the vertical of fastener 20 relative to connector 24.Certainly according to the difference that design needs, elongated through hole 282 also can be arranged on connector 24, and screw 284 also can be arranged in shackle member 26.In addition according to the difference that design needs, the quantity of module units, shape and structure also can be different.
Such as, refer to Fig. 5, Fig. 6 and Fig. 7, Fig. 5 is the decomposing schematic representation of a kind of exemplary embodiment of fastener, Fig. 6 be in Fig. 5 fastener combination after perspective view.Fig. 7 is the operating diagram of the module units in Fig. 5.As shown in Figure 5, fastener 20 comprises three module unitss 28, module units 28 in the middle of it comprises an elongated through hole 282 be arranged in shackle member 26, be arranged on the screw 284 on connector 24 with one, its topmost and nethermost module units 28 comprise one respectively and be arranged on screw 284 in shackle member 26 and an elongated through hole 282 be arranged on connector 24.As shown in Figure 6 and Figure 7, shackle member 26 can be connected by above three module unitss 28 with connector 24, and shackle member 26 can be moved relative to connector 24 in the longitudinal direction of fastener 20.
Again such as, refer to Fig. 8, Fig. 9 and Figure 10, Fig. 8 is the perspective exploded view of a kind of exemplary embodiment of fastener, Fig. 9 be in Fig. 8 fastener combination after perspective view.Figure 10 is the operating diagram of the module units in Fig. 8.As shown in Figure 8, fastener 20 comprises three module unitss 28, module units 28 in the middle of it comprises one and is arranged on elongated through hole 282 on connector 24 and a screw 284 be arranged in shackle member 26, two module unitss in face, highest and lowest comprise one respectively and are arranged on elongated through hole 282 in shackle member 26 and a projection 286 be arranged on connector 24, projection 286 is corresponding with elongated through hole 282 to be arranged, and protruding 286 through elongated through hole 282 and its clamping, and can move in elongated through hole 282.As shown in Figure 9 and Figure 10, shackle member 26 and connector 24 can three module unitss 28 of above be connected, and shackle member 26 can be moved relative to connector 24 in the longitudinal direction of fastener 20.
Fastener 20 in Fig. 5 and Fig. 8 also has a return unit 25 respectively, return unit 25 can connect connector 24 and shackle member 26 respectively, such as, return unit 25 in Fig. 5 is a torsion spring, the two ends of torsion spring are connected directly between in shackle member 26, and are connected with connector by the screw 284 in the middle of on connector 24.Return unit 28 in Fig. 8 is also a torsion spring, and the two ends of torsion spring are connected directly between on connector 24, and is connected with shackle member 26 by the screw 284 in the middle of shackle member 26.It will be appreciated by those skilled in the art that, due to the effect of torsion spring, shackle member 26 can be made in the longitudinal direction of fastener 20 to have an initial position relative to connector 24, and, when shackle member 26 leaves initial position, torsion spring generation deformation and provide one can order about reset force that shackle member 26 gets back to initial position.Adopt said structure, can make shackle member 26 more easily and operating axis 16 clamping.Certainly, according to the difference that design needs, return unit 25 also can adopt other devices, return unit 25 and also can adopt other connected modes between connector 24 and shackle member 26.
Connector 24 shown in Fig. 8 can also be provided with four projecting contact sites 29 on the side of described shackle member 26, after connector 24 is connected by module units 28 with shackle member 26, contact site 29 can reduce the contact area of connector 24 two sides relative with shackle member 26, makes that shackle member 26 is easier to move upward the vertical of fastener relative to connector 24.According to the difference that design needs, the quantity of contact site 29, structure and position also can be different from shown in figure, and such as only can design a contact site, contact site 29 can design on the side of shackle member 26 SCCP connection-oriented part 24.
Present invention also offers the switching device using above-mentioned locked component, wherein locked component can be assembled on the switchgear, please refer to Fig. 1, when fastener 20 is in latched position, Access Division 26 can with the mutually clamping of the operating axis 16 of switching device, rotate to stop operating axis 16.And shackle member 26 can move up the vertical of fastener 20 relative to connector 24, the draw-in groove 262 in shackle member 26 can be easierly fastened on operating axis 16.
Due to fastener can according to the position of operating axis within the specific limits self-control so when mounted need not the position of accurate locator card component, even and if the position in use between fastener and operating axis slightly changes, draw-in groove still can be fastened on operating axis, completes lock function.
In this article, " schematically " expression " serves as example, example or explanation ", not should by being described to any diagram of " schematically " in this article, execution mode is interpreted as a kind of preferred or have more the technical scheme of advantage.
Be to be understood that, although this specification describes according to each embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
A series of detailed description listed is above only illustrating for possible embodiments of the present invention; they are also not used to limit the scope of the invention, all do not depart from the skill of the present invention Equivalent embodiments done of spirit or change all should be included within protection scope of the present invention.
Claims (9)
1. the locked component of switching device, it is characterized in that, described locked component comprises a fastener (20) and an operating parts be connected with described fastener (30), drive described fastener to move between a unlocked position and a latched position by controlling described operating parts, wherein said fastener comprises:
At least one module units (28);
A connector (24), it is connected with described operating parts; With
A shackle member (26), which is provided with a draw-in groove (262), described shackle member is connected with described connector by described module units, and can move up the vertical of described fastener relative to described connector, when described fastener is in described latched position, described draw-in groove can be connected in the operating axis (16) of described switching device
Wherein, described locked component also comprises the dynamic resistance part (42) that is fixed on switching device inside, described unlocked position is moved at described fastener (20), described dynamic resistance part provides a dynamic resistance power to described fastener, and the moving direction that direction and the described fastener of described dynamic resistance power trend towards when moving from unlocked position to latched position is contrary.
2. the locked component of switching device according to claim 1, wherein, the notch end face of described draw-in groove is set to the inclined-plane that can slip into for operating axis.
3. the locked component of switching device according to claim 1, wherein, described operating parts (30) is a latch fitting being arranged on described switchgear housing (14), and the dead bolt (32) of described latch fitting is fixedly connected with described connector.
4. the locked component of switching device according to claim 1, wherein, described dynamic resistance part (42) is at least one arc convex, described fastener (20) is provided with the arc groove (22) with described arc convex relative set, when described fastener rotates to described unlocked position, described arc convex can slip in described arc groove.
5. the locked component of switching device according to claim 1, wherein, described module units comprises:
An elongated through hole (282), it is arranged on described shackle member (26) or described connector (24); With
The projection (286) that arranges corresponding to described elongated through hole, it is arranged in described connector or described shackle member, and described projection can be arranged in described elongated through hole, and described projection can move in described elongated through hole.
6. the locked component of switching device according to claim 1, wherein, described module units comprises:
An elongated through hole (282), it is arranged on described shackle member (26) or described connector (24); With
The screw (284) that arranges corresponding to described elongated through hole, it is arranged in described connector or described shackle member, and described screw can be arranged in described elongated through hole, and described screw can move in described elongated through hole.
7. the locked component of switching device according to claim 1, wherein, described connector (24) has at least one projecting contact site (29) towards the joint face of described shackle member (26) and/or described shackle member on the joint face of described connector.
8. the locked component of switching device according to claim 1, wherein, described fastener (20) also comprises a return unit (25), described return unit can connect described connector (24) and described shackle member (26) respectively, described shackle member relatively described connector in the longitudinal direction of described fastener is made to have an initial position, and when described shackle member leaves described initial position, described return unit provide one can order about all the time reset force that described shackle member gets back to described initial position.
9. switching device, it comprises:
One as the locked component as described in arbitrary in claim 1 to 8; With
An operating axis (16), when described fastener is in described latched position, the draw-in groove (262) of described shackle member (26) can be connected in described operating axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110206850.3A CN102891024B (en) | 2011-07-22 | 2011-07-22 | Locking component of switch device and switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110206850.3A CN102891024B (en) | 2011-07-22 | 2011-07-22 | Locking component of switch device and switch device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102891024A CN102891024A (en) | 2013-01-23 |
| CN102891024B true CN102891024B (en) | 2015-04-08 |
Family
ID=47534501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110206850.3A Expired - Fee Related CN102891024B (en) | 2011-07-22 | 2011-07-22 | Locking component of switch device and switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102891024B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2508067A (en) * | 1948-07-06 | 1950-05-16 | Arrow Hart & Hegeman Electric | Push-pull selector switch with key locking arrangement |
| DE1014630B (en) * | 1952-09-27 | 1957-08-29 | Voigt & Haeffner Ag | Interlocking lock for the drives of disconnectors and circuit breakers in electrical switchgear |
| DE1143901B (en) * | 1961-01-24 | 1963-02-21 | Daimler Benz Ag | Electric hand switch with key lock, especially for conveyor systems |
| FR1482991A (en) * | 1966-04-20 | 1967-06-02 | Telemecanique Electrique | Latch switch |
| US4166202A (en) * | 1978-02-01 | 1979-08-28 | Reiter John J | Switch actuating mechanism |
| CN201332076Y (en) * | 2009-01-07 | 2009-10-21 | 陈锡瑜 | Lockset assembly applicable to error action prevention in motor switches |
-
2011
- 2011-07-22 CN CN201110206850.3A patent/CN102891024B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2508067A (en) * | 1948-07-06 | 1950-05-16 | Arrow Hart & Hegeman Electric | Push-pull selector switch with key locking arrangement |
| DE1014630B (en) * | 1952-09-27 | 1957-08-29 | Voigt & Haeffner Ag | Interlocking lock for the drives of disconnectors and circuit breakers in electrical switchgear |
| DE1143901B (en) * | 1961-01-24 | 1963-02-21 | Daimler Benz Ag | Electric hand switch with key lock, especially for conveyor systems |
| FR1482991A (en) * | 1966-04-20 | 1967-06-02 | Telemecanique Electrique | Latch switch |
| US4166202A (en) * | 1978-02-01 | 1979-08-28 | Reiter John J | Switch actuating mechanism |
| CN201332076Y (en) * | 2009-01-07 | 2009-10-21 | 陈锡瑜 | Lockset assembly applicable to error action prevention in motor switches |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102891024A (en) | 2013-01-23 |
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