CN217641027U - Double-power-supply change-over switch for unlocking locking mechanism by cover body - Google Patents

Abstract

A dual-power transfer switch capable of unlocking a locking mechanism through a cover body comprises a shell, the cover body connected with the shell, a support arranged in the shell, a motion conversion mechanism and a locking mechanism. The motion conversion mechanism comprises a linkage piece, and a convex block is arranged on the outer side wall of the linkage piece; the locking mechanism comprises two limiting parts, the end surfaces of which are respectively abutted against the left side and the right side of the bump, the middle parts of the two limiting parts are hinged with the bracket, and a trigger rod respectively extends from the middle parts to the direction far away from the bump; the inner wall of the cover body is provided with two ejector rods; when the cover body is covered on the shell, the trigger rod is matched with the ejector rod, so that the end face of the limiting piece is tilted and ejected out of the top face of the bump. Compared with the prior art, the top rod of the dual-power transfer switch is matched with the limiting piece so as to unlock the lug, and the dual-power transfer switch has a simple and compact structure; when the cover body is closed, the two limiting parts can be rotated to unlock the convex block, and the transmission effect and the use stability are better.

Description

Double-power-supply change-over switch for unlocking locking mechanism by cover body

Technical Field

The utility model relates to a dual power switch technical field, concretely relates to dual power change-over switch by lid unblock locking mechanical system.

Background

The dual-power switch electric appliance adopts a power supply mode that the main power supply and the standby power supply are operated in a split mode, so that when one power supply fails and is powered off, the other power supply can be immediately put into use, and the continuity of power supply is guaranteed. The existing dual-power transfer switch generally comprises an automatic driving mechanism, a manual driving mechanism, a motion conversion mechanism and a locking mechanism. The automatic driving mechanism can automatically switch a common power supply and a standby power supply, so that power supply conversion is realized; the manual drive mechanism may be used to switch power when the automatic drive mechanism fails. The automatic driving mechanism and the manual driving mechanism are used for switching the power supply by driving the motion conversion mechanism to rotate. The locking mechanism is used for locking or unlocking the motion conversion mechanism in the process of switching the power supply.

Under the condition of automatically switching power supplies, the dual-power transfer switch with the locking mechanism firstly releases the locking of the motion conversion mechanism, so that the automatic driving mechanism can drive the motion conversion mechanism to rotate. Chinese patent CN101395685B discloses an automatic control module for an electric circuit breaker and an electric circuit breaker equipped with the same, wherein a cover is further coupled to a micro switch controlled by a protruding pin, so that in an automatic mode, the control module is prevented from operating as long as the cover is opened. In the structure, the control module is controlled by controlling the micro switch, and compared with a mechanical transmission control mode, the control mode disclosed by the above method has delay and inaccuracy when the cover body is closed, the control process is more unstable than the mechanical transmission control mode, the use effect is poor, in addition, the number of parts is more, the structure is complex, and the reliability is poor.

SUMMERY OF THE UTILITY MODEL

For solving current dual supply change over switch among the background art under the condition of automatic transfer power, the problem of the use steady difference of its unblock motion transfer mechanism's structure, the utility model provides a by lid unblock locking mechanical system's dual supply change over switch. The first ejector rod and the second ejector rod of the dual-power-supply change-over switch are matched with the two limiting pieces so as to unlock the convex blocks, and the dual-power-supply change-over switch is simple and compact in structure; when the cover body is closed, the two limiting parts can be rotated to unlock the convex block, and the cover body has a good transmission effect and good use stability.

In order to achieve the above object, the technical solution of the present invention is as follows.

A dual-power transfer switch for unlocking a locking mechanism by a cover body comprises a shell, the cover body connected with the shell, a bracket arranged in the shell, a motion conversion mechanism and a locking mechanism;

the inner wall of the cover body is provided with a mandril; the motion conversion mechanism comprises a linkage piece, and a convex block is arranged on the outer side wall of the linkage piece; locking mechanical system is including articulating first locating part and the second locating part on the support, its characterized in that:

when the cover body is in an open state, the opposite end surfaces of the first limiting piece and the second limiting piece are respectively in locking fit with the left side and the right side of the lug;

the first limiting part is provided with a first trigger rod respectively extending from the middle part of the first limiting part to the direction far away from the lug, and the second limiting part is provided with a second trigger rod respectively extending from the middle part of the second limiting part to the direction far away from the lug; the ejector rod comprises a first ejector rod and a second ejector rod;

under the state that the cover body covers the shell, the first ejector rod presses the first trigger rod to tilt the end face of the first limiting part to enable the first trigger rod to be separated from the locking of the lug, and the second ejector rod presses the second trigger rod to tilt the end face of the second limiting part to enable the second trigger rod to be separated from the locking of the lug.

Furthermore, the second trigger rod is arranged towards one side close to the cover body.

Furthermore, the top of the shell is provided with a third through hole with a movable space, and the tail end of the second ejector rod is positioned in the third through hole and matched with the second ejector rod.

Further, still include an unlocking piece, unlocking piece includes transmission pole and pressure board face, closes under the state of casing at the lid, the top of transmission pole leans on first ejector pin, first trigger lever top leans on the pressure board face.

Further, the top of casing is equipped with the second through-hole, the second through-hole cooperates with the transfer bar.

Further, the unlocking piece is provided with a first guide rail, the shell is provided with a second guide rail, and the first guide rail is matched with the second guide rail.

Further, be equipped with the elasticity piece that resets between unblock piece and the casing, under the state of lid at the casing, the elasticity piece that resets makes pressure plate face and first trigger lever have the trend of mutual separation.

Further, the bottom of the unlocking piece is provided with a connecting hole for connecting the elastic resetting piece.

The shell is hinged with the cover body.

Compared with the prior art, the utility model discloses a dual power transfer switch's beneficial effect does: the inner wall of the cover body is provided with a first ejector rod and a second ejector rod, the first ejector rod presses the first trigger rod and the second ejector rod presses the second trigger rod under the state that the cover body covers the shell, so that the first limiting piece and the second limiting piece rotate to be ejected out of the top surface of the lug, and the rotation limitation of the first limiting piece and the second limiting piece on the lug is removed. The first ejector rod and the second ejector rod of the structure are matched with the two limiting pieces so as to unlock the lug, and the structure is simple and compact; when the cover body is closed, the two limiting parts can be rotated to unlock the convex block, and the cover body has a good transmission effect and good use stability.

Drawings

Fig. 1 is an exploded perspective view of a dual power transfer switch according to the present invention;

FIG. 2 is a perspective view of a bracket;

FIG. 3 is an assembly view of the limiting member, the link member and the bracket;

FIG. 4 is a perspective view of a first retaining member;

FIG. 5 is a perspective view of the first locating member from another direction;

FIG. 6 is a perspective view of a second stop;

FIG. 7 is a perspective view of another direction of the second limiting member;

FIG. 8 is a perspective view of the cover;

FIG. 9 is a perspective view of the unlocking member;

FIG. 10 is another perspective view of the unlocking member;

FIG. 11 is a cross-sectional view of the dual power transfer switch of FIG. 1;

FIG. 12 is a cross-sectional view of another cross-sectional side of the dual power transfer switch as in FIG. 1;

FIG. 13 is a perspective view of the upper shell;

FIG. 14 is a top view of the lower case;

FIG. 15 is an exploded perspective view of the driven gear, motion conversion mechanism, limiting member and bracket;

FIG. 16 is a perspective view of the driven gear;

FIG. 17 is a top view of the driven gear;

18 a-18 c are schematic diagrams of the state when the power supply is at bit 0;

FIGS. 19 a-19 c are schematic views of the power supply in the I-bit state;

FIGS. 20 a-20 c are schematic views of the power supply in position II;

FIG. 21 is a front view of the linkage;

1. a manual drive mechanism; 11. a driving gear; 111. a shaft cylinder; 12. a driven gear; 121. a first annular body; 1211. Top block; 1211a, a first top block; 1211b. A second top block; 1211c, a third top block; 1211d, fourth top block; 122. a first lumen;

2. a motion conversion mechanism; 21. a linkage member; 211. a bump; 212. a limiting groove; 212a, a first limiting groove; 212b, a second limiting groove; 22. a motion conversion mechanism body;

3. an automatic drive mechanism;

4. a locking mechanism; 41. a limiting member; 42. a first limit piece; 421. a first hinge shaft; 422. a first escape block; 423. a first abdicating groove; 424. a first stopper; 425. a first trigger lever; 43 a second stopper; 431. a second hinge shaft; 432. a second abdicating groove; 433. a second escape block; 434. a second limiting block; 435. a second trigger lever; 44. a second torsion spring;

5. a housing; 51. an upper shell; 511. a second through hole; 512. a third through hole; 52. a lower case; 521. a second guide rail; a lid body; 531. a first ejector rod; 532. a second ejector rod;

6. a support; 61. a first through hole; 62. connecting columns; 63. a hinge hole;

7. unlocking the lock; 71. a transfer lever; 72. pressing the board surface; 73. a first guide rail; 74. connecting holes;

8. a first torsion spring;

9. an elastic reset member;

a plane A; and a plane B.

Detailed Description

In the description of the present invention, it should be understood that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience of description and simplification of the description, and do not indicate or imply that the device or 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.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The technical solution of the present invention will be further explained with reference to fig. 1-21.

Example 1

A dual power transfer switch capable of interlocking unlocking and locking a locking mechanism is shown in fig. 1, and comprises a housing 5, and a manual driving mechanism 1, a motion conversion mechanism 2, an automatic driving mechanism 3, a locking mechanism 4 and a circuit switching device (not shown) which are arranged in the housing. The manual driving mechanism 1 and the automatic driving mechanism 3 can both drive the motion conversion mechanism 2 to rotate, and further drive the circuit switching device to rotate so as to complete circuit switching, and the locking mechanism 4 can limit or unlock the rotation of the motion conversion mechanism 2. The housing 5 includes an upper housing 51 and a lower housing 52 that are screwed to each other, and the upper housing 51 is hinged to a cover 53, and the above connection relationship may also be other common connection manners, and in addition, the structure of the automatic driving mechanism 3 for driving the motion conversion mechanism 2 to rotate may adopt a common structure in the art, and will not be described herein again.

As with a conventional dual power transfer switch, the lock mechanism 4 of the dual power transfer switch of the present embodiment releases the rotation restriction of the motion conversion mechanism 2 when the power supply is automatically switched, which will be described below. After the motion conversion mechanism 2 releases the rotation restriction, the rotation process thereof can be divided into: when not rotating, it is at 0 position; when the power source is rotated in a first direction (clockwise in fig. 1), the power source can be in a first power position (i position), and when the power source is rotated in a second direction (counterclockwise in fig. 1), the power source can be in a second power position (ii position), i.e., the power source can be switched to a normal power source or a standby power source.

In the state of automatically switching the power supply, the lock mechanism 4 releases the rotation restriction of the motion conversion mechanism 2 more specifically:

fig. 2 is a structural schematic of the stent 6, which is disposed in the inner cavity of the inferior shell 52. The overall structure of the support 6 is square, a first through hole 61 is arranged in the middle of the support 6, a connecting column 62 is arranged in the middle of the support 6 close to the top of the support, and hinge holes 63 are respectively arranged on two sides of the connecting column 62. As shown in fig. 1, the motion conversion mechanism 2 includes a link 21 and a motion conversion mechanism body 22, which are coaxially disposed and relatively fixed when assembled. The link 21 is disposed in the first through hole 61, and can rotate along the first through hole 61, and when the first ring 21 rotates, the link drives the motion conversion mechanism body 22 to rotate in the same direction. The outer side wall of the linking member 21 is provided with a projection 211. As shown in fig. 3 to 7, the locking mechanism 4 includes two limiting members 41, namely a first limiting member 42 and a second limiting member 43, and in the state where the power supply is at the 0 position, opposite end surfaces of the first limiting member 42 and the second limiting member 43 are respectively located at the left side and the right side of the protruding block 211, so that the protruding block 211 can be locked to limit the rotation of the link 21. The first limiting part 42 and the second limiting part 43 are respectively provided with a hinge shaft, namely a first hinge shaft 421 and a second hinge shaft 431, and the first hinge shaft 421 and the second hinge shaft 431 are hinged in the hinge hole 63, so that when the first limiting part 42 and/or the second limiting part 43 are/is rotated, the first limiting part 42 and/or the second limiting part 43 are/is pushed out of the top of the lug 211, the lug 211 is unlocked, and the rotation limitation of the linkage part 21 is relieved.

As shown in fig. 4-7, the first limiting member 42 has a first triggering rod 425 extending along the middle portion thereof in a direction away from the protrusion 211, and the second limiting member 43 has a second triggering rod 435 extending along the middle portion thereof in a direction away from the protrusion 211. As shown in fig. 8, the inner wall of the cover 53 is provided with a first push rod 531 and a second push rod 532, the first push rod 531 is disposed corresponding to the first trigger rod 425, and the second push rod 532 is disposed corresponding to the second trigger rod 435 and is engaged with the first trigger rod. An unlocking piece 7 is arranged between the first trigger rod 425 and the first top rod 531, and the unlocking piece 7 is connected to the lower shell 52 in a sliding mode and can slide up and down in the vertical direction. As shown in fig. 9 to 10, the unlocking member 7 includes a transfer rod 71 and a platen surface 72; the transfer rod 71 is vertically arranged, and the top surface of the transfer rod is matched with the first top rod 531; the platen surface 72 is horizontally disposed and cooperates with the first trigger bar 425. In the process of closing the cover 53 on the upper shell 51, the first top rod 531 of the cover 53 presses down the transmission rod 71 of the unlocking piece 7 to move the unlocking piece 7 downward, and in the process of moving the unlocking piece 7 downward, the press plate surface 72 presses down the first trigger rod 425 of the first limiting piece 42, so that the first limiting piece 42 rotates to push the first limiting piece 42 out of the top surface of the protrusion 211, so as to unlock the rotation limitation of the first limiting piece 42 on the protrusion 211. Meanwhile, the second push rod 532 of the cover 53 presses the second trigger lever 435, so that the second limiting member 43 rotates, and the second limiting member 43 is pushed out of the top surface of the protrusion 211, so as to unlock the rotation limitation of the protrusion 211 by the second limiting member 43. In the above structure, the cover 53 is closed on the upper shell 51, the first top rod 531 of the cover 53 drives the first limiting member 42 to rotate through the unlocking member 7, and the second top rod 532 directly presses the second limiting member 43 to rotate, so as to unlock the protrusion 211, so that the automatic driving mechanism 3 can drive the motion conversion mechanism 2 to rotate to switch the power supply in the automatic driving process. Each structure is simple, the connection is compact, and the stability in the using process is ensured. Fig. 11 to 12 show a state in which the stopper 41 is closed before and after the cover 53 is closed on the upper case 51.

In the above structure, it can be understood that, in order to ensure that the transmission rod 71 of the unlocking member 7 can pass through the upper shell 51, the upper shell 51 is provided with a second through hole 511 (as shown in fig. 13) for passing the transmission rod 71, so that the transmission rod 71 can be exposed outside the upper shell 51, and after the cover 53 is closed on the upper shell 51, the first push rod 531 of the cover 53 can drive the unlocking member 7 to move downwards. The transfer rod 71 is not only vertically arranged, but also the press plate surface 72 is not only horizontally arranged, and the transmission function is not affected when the transfer rod is arranged.

As can be seen from fig. 11 to 12, the second trigger bar 435 of the second limiting member 43 is disposed to be inclined toward the side close to the cover 53, specifically, as shown in fig. 13, a third through hole 512 is disposed on the cover 53, and the end of the second trigger bar 435 extends into the third through hole 512. The third through hole 512 has a certain moving space, and when the cover 53 is closed to the upper shell 51, the second push rod 532 presses the end of the second trigger rod 435, so that the second limiting member 43 rotates, and the movement limitation of the protrusion 211 is released. When the cover 53 is opened, the second push rod 532 is separated from the second trigger lever 435, and the second limiting member 43 is disposed at the side of the protrusion 211 under the action of the second torsion spring 44, so as to lock the protrusion 211. The direct action between the second push rod 532 and the second trigger bar 435 is compact, and the structure is simple without any other motion conversion part.

In the above structure, it should be noted that the length of the second trigger bar 435 and the position of the end thereof are not limited to the above arrangement, and it is only necessary that the second push rod 532 can press the second trigger bar 435 so as to rotate the second limiting member 43. In addition, based on the matching relationship between the second triggering rod 435 and the second push rod 532, the first push rod 531 and the first triggering rod 425 can be directly matched without the unlocking piece 7, that is, the first push rod 531 and the first triggering rod 425 can also be matched by adopting the structure of the second push rod 532 and the second triggering rod 435, so that the first push rod 531 can contact the first triggering rod 425. When the cover 53 is closed on the upper case 51, the first trigger lever 425 can be pressed down to rotate the first limiting member 42.

As shown in fig. 9 to 10, the unlocking member 7 is provided with a first rail 73 arranged in a vertical direction, and as shown in fig. 14, the lower case 52 is provided with a second rail 521 engaged with the first rail 73, so that the unlocking member 7 can move up and down by the first rail 73 and the second rail 521.

In order to ensure that the stop 41 limits the movement of the projection 211 when the cover 53 is opened, the unlocking element 7 and the housing 5 are provided with a connecting elastic return element 9, the elastic return element 9 having a tendency to separate the unlocking element 7 and the first stop 42 from each other, said elastic return element 9 preferably being a tension spring. As shown in fig. 9, the unlocking member 7 is provided at the bottom thereof with a coupling hole 74 to which the elastic restoring member 9 is coupled. In addition, the connecting column 62 is provided with a second torsion spring 44 which makes the first limiting member 42 and the second limiting member 43 tend to lock the protrusion 211. When the cover 53 is closed on the upper shell 51, the unlocking element 7 moves downward, the first limiting element 42 and the second limiting element 43 release the limitation on the movement of the protrusion 211, and the elastic restoring element 9 is in a stretching state. When the cover 53 is opened, the unlocking member 7 moves upward under the action of the elastic potential energy of the elastic restoring member 9, at this time, the pressing plate surface 72 of the unlocking member 7 is separated from the first trigger rod 425, and under the action of the second torsion spring 44, the first limiting member 42 and the second limiting member 43 are positioned on both sides of the protrusion 211 again, and the bottoms thereof are in contact with the outer side wall of the linkage 21, thereby limiting the movement of the protrusion 211.

When the dual power supply changeover switch is used, the cover body 53 is closed on the upper shell 51 in an automatically driven state, the first top rod 531 of the cover body 53 presses down the transmission rod 71 of the unlocking piece 7 to enable the unlocking piece 7 to move downwards, and in the process of downward movement of the unlocking piece 7, the pressing plate surface 72 presses down the first trigger rod 425 of the first limiting piece 42, so that the first limiting piece 42 rotates to push the first limiting piece 42 out of the top surface of the convex block 211, and the rotation limitation of the first limiting piece 42 on the convex block 211 is unlocked. In the process of closing the cover 53 on the upper case 51, the second push rod 532 presses the second trigger lever 435, so that the second limiting member 43 rotates, and the second limiting member 43 is pushed out of the top surface of the protrusion 211, so as to unlock the rotation limitation of the protrusion 211 by the second limiting member 43. Then, the automatic driving mechanism 3 is started to drive the motion conversion mechanism 2 to rotate, so that the switching of the power supply is realized. In the above process, the elastic restoring member 9 is stretched. When the cover 53 is opened, the unlocking member 7 moves upward under the action of the elastic potential energy of the elastic restoring member 9, and at this time, the plate pressing surface 72 of the unlocking member 7 is separated from the first trigger lever 425, and at the same time, the second push rod 532 is separated from the second trigger lever 435. Under the action of the second torsion spring 44, the first limiting member 42 and the second limiting member 43 are positioned on both sides of the protrusion 211 again, and the bottom thereof is in contact with the outer side wall of the link 21, thereby limiting the movement of the protrusion 211, i.e., the rotation of the link 21 (the motion converting mechanism 2).

Example 2

The present embodiment differs from embodiment 1 in comparison with embodiment 1 in that: embodiment 1 provides an unlocking structure in an automatic driving state, while the present embodiment provides an unlocking structure in a manual driving state, and the structure of the present embodiment is further explained on the basis of embodiment 1. It will be appreciated that in the manually actuated state, the cover 53 is opened at all times, and the movement of the protrusion 211 is restricted by the first and second stoppers 42 and 43.

As shown in fig. 1 and 15, the manual drive mechanism 1 includes a horizontally disposed drive gear 11 and a vertically disposed driven gear 12, and the drive gear 11 and the driven gear 12 are engaged with each other. The driving gear 11 is provided with a shaft tube 111. The user can use a wrench to engage the shaft tube 111 to rotate the driving gear 11 and thus the driven gear 12. In addition, the driven gear 12 is disposed coaxially with the linkage 21, a first inner cavity 122 is further disposed at a middle position of the driven gear 12, a second inner cavity (not shown) is disposed at a middle position of the linkage 21, when the driven gear 12 is connected with the linkage 21, the first inner cavity 122 and the second inner cavity form a containing cavity, a first torsion spring 8 is disposed in the containing cavity, and two ends of the first torsion spring 8 are respectively connected with the driven gear 12 and the linkage 21. When the device is used, a user rotates the driving gear 11 to drive the driven gear 12 to rotate, and the driven gear 12 drives the motion conversion mechanism 2 to rotate through the first torsion spring 8.

As shown in fig. 15 to 16, the driven gear 12 is provided with a first annular body 121 on an end surface thereof near the linkage member 21, and the first annular body 121 is provided with four top blocks 1211 arranged at intervals in layers, namely a first top block 1211a, a second top block 1211b, a third top block 1211c and a fourth top block 1211d. Referring to fig. 2-3, the first top block 1211a and the second top block 1211b are disposed on a side close to the second position-limiting member 43, and the third top block 1211c and the fourth top block 1211d are disposed on a side close to the first position-limiting member 42. As shown in fig. 17, the first top block 1211a and the third top block 1211c are disposed on a side close to the end surface of the driven gear 12 and are located on the same plane a, and when the device is used, the first top block 1211a or the third top block 1211c is engaged with the first stopper 42, so that the first stopper 42 can be lifted up, and the movement restriction of the link 21, that is, the rotation restriction of the movement conversion device 2 can be released. The second top block 1211B and the fourth top block 1211d are disposed on the side of the end surface away from the driven gear 12 and are located on the same plane B, and when in use, the second top block 1211B or the fourth top block 1211d is engaged with the second limiting member 43, so that the second limiting member 43 can be lifted, and the movement limitation of the link member 21, that is, the rotation limitation of the movement conversion device 2, can be released. In the above structure, the first top block 1211a is disposed on the side of the second limiting member 43 (i.e., the side away from the first limiting member 42), and the fourth top block 1211d is disposed on the side of the first limiting member 42 (i.e., the side away from the second limiting member 43), so that the driven gear 12 has a larger rotation range to realize power switching.

The specific steps of lifting the stopper 41 by the top 1211 to release the motion restriction on the protrusion 211 are as follows: the bottom of the limiting member 41 spans the outer side walls of the linkage member 21 and the first annular body 121, and more specifically, as shown in fig. 4 to 7, a first avoiding block 422 and a first avoiding groove 423 are disposed at a position opposite to the bottom of the first limiting member 42 and the first annular body 121, the first avoiding block 422 and the first avoiding groove 423 are sequentially disposed in layers from the driven gear 12 to the linkage member 21, and in use, the first avoiding block 422 is matched with the first top block 1211a or the third top block 1211c. The bottom of the second limiting member 43 is provided with a second yielding groove 432 and a second yielding block 433 at a position opposite to the first annular member 121, the second yielding groove 432 and the second yielding block 433 are sequentially layered from the driven gear 12 to the linkage member 21, and when the device is used, the second yielding block 433 is matched with the second top block 1211b or the fourth top block 1211d. During assembly, the center positions of the first yielding block 422 and the second yielding groove 432 are located on the surface a, and the first yielding groove 423 and the second yielding block 433 are located on the surface B. When the power supply is used, in the process of rotating from 0 position to I position, as shown in fig. 18a-c, the first limiting piece 42 and the second limiting piece 43 lock the lug 211 to prevent the linkage piece 21 from rotating, when the driving gear 11 rotates clockwise, the driven gear 12 rotates counterclockwise, and due to the locking effect of the first limiting piece 42 and the second limiting piece 43, the linkage piece 21 does not rotate at the moment; the driven gear 12 compresses the first torsion spring 8 during rotation, and at the same time, the first top block 1211a rotates through the second abdicating groove 432 to the first abdicating block 422, in this process, because the second abdicating groove 432 provides abdicating (avoiding interference) for the first top block 1211a, the first top block 1211a cannot lift the second limiting member 43 to remove the rotation limitation of the second limiting member 43 to the protruding block 211; when the first top 1211a rotates to the first clearance block 422 and gradually lifts the first clearance block 422, the first clearance block 422 is higher than the protrusion 211, at this time, the first limiting member 42 releases the rotation limitation on the protrusion 211, i.e., the rotation limitation on the link member 21, and the link member 21 rotates counterclockwise under the action of the elastic potential energy of the first torsion spring 8, so as to drive the motion conversion mechanism body 22 to rotate until the power source is at the i position (the state diagram when the power source is at the i position is shown in fig. 19 a-c). Similarly, when the power supply is switched from 0 bit to II bit, the process is as follows: the driving gear 11 is rotated counterclockwise, the driven gear 12 rotates clockwise, and during the rotation, the first torsion spring 8 is compressed, and meanwhile, the fourth top block 1211d rotates through the first abdicating groove 423 to the second abdicating block 433; when the fourth top block 1211d rotates to the second escape block 433 and gradually lifts the second escape block 433, so that the second escape block 433 is higher than the protrusion 211, at this time, the second limiting member 43 releases the rotation limitation on the protrusion 211, that is, the rotation limitation on the link member 21 is released, and the link member 21 rotates clockwise under the action of the elastic potential energy of the first torsion spring, so as to drive the transmission disc and the indicator wheel to rotate until the power source is at the second position (the state diagram when the power source is at the second position is shown in fig. 20 a-c).

As shown in fig. 21, the outer sidewall of the linking member 21 and the two sides of the protrusion 211 are respectively provided with a first limiting groove 212a and a second limiting groove 212b, and the first limiting groove 212a and the second limiting groove 212b are symmetrically disposed about the protrusion 211. As shown in fig. 4-7, the first receding groove 423 extends toward a side close to the linkage member 21 to form a first limiting block 424 adapted to the first limiting groove 212a, and the second receding block 433 extends toward a side close to the linkage member 21 to form a second limiting block 434 adapted to the second limiting groove 212b. When the power supply rotates from 0 position to i position, when the first limiting member 42 releases the limitation on the protrusion 211, the link 21 rotates counterclockwise under the action of the first torsion spring 8, and when the link 21 rotates, the first limiting member 42 and the second limiting member 43 abut against the outer side wall of the link 21 under the action of the second torsion spring 44. When the linkage member 21 rotates a certain angle, the second stopper 434 is engaged with the second stopper groove 212b to stop the rotation of the linkage member 21 (see fig. 19b for a state diagram). When the power supply is restored to the 0 position from the I position, the driving gear 11 is rotated clockwise, the driven gear 12 rotates counterclockwise, the first torsion spring 8 is compressed in the rotating process, and meanwhile, the second top block 1211b rotates to the second abdicating block 433 through the first abdicating groove 423; when the second top block 1211b rotates to the second clearance block 433 and gradually lifts the second clearance block 433, so that the second limit block 434 is higher than the second limit groove 212b, the second limit block 434 releases the rotation limitation of the second limit groove 212b, that is, the second limit member 43 releases the rotation limitation of the linkage member 21, and the linkage member 21 rotates counterclockwise under the action of the elastic potential energy of the first torsion spring 8 until the protrusion 211 is clamped between the first limit member 42 and the second limit member 43. Similarly, when the power source rotates from the 0 position to the ii position, the second limiting member 43 releases the limitation on the protrusion 211, so that the linking member 21 rotates until the first limiting member 424 is engaged with the first limiting groove 212a (see fig. 20b for a state diagram). When the power source rotates from the second position to the 0 position, the third top 1211c of the driven gear 12 rotates through the second yielding groove 432 to the second yielding block 433, and when the third top 1211c rotates to the first yielding block 422 and gradually lifts up the first yielding block 422, the first limiting block 424 is higher than the first limiting groove 212a, at this time, the first limiting block 424 relieves the rotation limitation on the first limiting groove 212a, that is, the first limiting member 42 relieves the rotation limitation on the linkage member 21, and the linkage member 21 rotates clockwise under the action of the 5-degree potential energy of the first torsion spring until the protrusion 211 is clamped between the first limiting member 42 and the second limiting member 43.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. 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 claims of the present invention.

Claims (9)

1. A dual-power transfer switch for unlocking a locking mechanism by a cover body comprises a shell, the cover body connected with the shell, a bracket arranged in the shell, a motion conversion mechanism and a locking mechanism;

the inner wall of the cover body is provided with a mandril; the motion conversion mechanism comprises a linkage piece, and a convex block is arranged on the outer side wall of the linkage piece; locking mechanical system is including articulating first locating part and the second locating part on the support, its characterized in that:

when the cover body is in an open state, the opposite end surfaces of the first limiting piece and the second limiting piece are respectively in locking fit with the left side and the right side of the lug;

the first limiting part is provided with a first trigger rod respectively extending from the middle part of the first limiting part to the direction far away from the lug, and the second limiting part is provided with a second trigger rod respectively extending from the middle part of the second limiting part to the direction far away from the lug; the ejector rod comprises a first ejector rod and a second ejector rod;

under the state of lid at the casing, thereby the terminal surface of first locating part of first ejector pin pressing first trigger lever perk makes it break away from the locking to the lug, thereby the terminal surface of second locating part of second ejector pin pressing second trigger lever perk makes it break away from the locking to the lug.

2. The dual power transfer switch of claim 1, wherein: the second trigger rod is arranged towards one side close to the cover body.

3. The dual power transfer switch of claim 2, wherein: the top of the shell is provided with a third through hole with a movable space, and the tail end of the second ejector rod is positioned in the third through hole and matched with the second ejector rod.

4. The dual power transfer switch of claim 1, wherein: still include an unlocking part, the unlocking part includes transmission pole and pressure board face, covers under the state of casing at the lid, the top of transmission pole is leaned on first ejector pin, first trigger lever top is leaned on the pressure board face.

5. The dual power transfer switch of claim 4, wherein: the top of casing is equipped with the second through-hole, the second through-hole cooperates with the transfer bar.

6. The dual power transfer switch of claim 4, wherein: the unlocking piece is provided with a first guide rail, the shell is provided with a second guide rail, and the first guide rail is matched with the second guide rail.

7. The dual power transfer switch of claim 4, wherein: be equipped with the elasticity piece that resets between unblock spare and the casing, cover under the state of casing at the lid, the elasticity piece that resets makes pressure plate face and first trigger bar have the trend of mutual separation.

8. The dual power transfer switch of claim 7, wherein: the bottom of the unlocking piece is provided with a connecting hole for connecting the elastic resetting piece.

9. The dual power transfer switch of any one of claims 1-8, wherein: the shell is hinged with the cover body.

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