CN220172017U - Electromagnetic relay and latching mechanism - Google Patents

Abstract

The utility model provides a locking mechanism, which comprises a rotating shaft and a reversing piece in a shell of an electromagnetic relay, wherein the rotating shaft is rotatably arranged in the shell through a rotating shaft rod, the rotating shaft is provided with a pushing part and a driving part, the reversing piece is provided with an operating part and a pressing part, the operating part can drive the reversing piece to reciprocate between an unlocking position and a locking position, and when the reversing piece is positioned at the unlocking position, a movable contact and a normally closed contact group are closed; when the reversing sheet is switched from the non-locking position to the locking position, the pressing part drives the pushing part of the rotating shaft, so that the driving part of the rotating shaft drives the movable reed row to drive the movable contact and the normally open contact group to be closed. An electromagnetic relay includes a housing, a relay mechanism and a latching mechanism within the housing. According to the electromagnetic relay and the locking mechanism, the rotating shaft is driven by operating the reversing sheet, and then the movable reed row is driven to realize locking contact, so that the matching mode is simple, the operation is easy, the reversing sheet replaces the operating handle of the rotating shaft, and the problem that the rotating shaft is broken when the force is too large due to the fact that the operating handle of the rotating shaft is long is solved.

Description

Electromagnetic relay and locking mechanism

Technical field

The utility model relates to the field of low-voltage electrical appliances, specifically an electromagnetic relay and a locking mechanism.

Background technique

In the existing electromagnetic relays, the locking mechanism mostly uses a cam to press the row of moving reeds after the rotating shaft rotates to lock the contacts. However, this type of locking mechanism has the following defects: 1. The operating handle on the rotating shaft is long, which can easily cause It will break when using too much force; 2. It is easy to come into contact in the non-locked state, causing the product to lock incorrectly.

In addition, the prior art also discloses a flip-type locking mechanism, which rotates the flip cover on the top plate to generate a stroke and presses another structural member downward to make the moving reed move the locking contact. However, due to its relatively complex movement mechanism, the assembly process It is a little complicated, and there is an angle close to 90 degrees between the direction of pressing the moving reed row (vertical) and the direction of the locking movement (horizontal), so there is a hidden danger of the moving reed row being forced out.

Utility model content

The purpose of this utility model is to overcome at least one defect of the prior art and provide an electromagnetic relay and a locking mechanism.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

The locking mechanism includes a rotating shaft and a commutating piece in the housing of the electromagnetic relay. The moving reed row of the electromagnetic relay is linked with the moving contacts. The moving contacts correspond to the normally closed contact group and the normally open contact group, so The rotating shaft is rotatably installed in the housing through the provided rotating shaft rod. The rotating shaft has a pushing part and a driving part. The reversing piece has an operating part and a pressing part. The operating part can drive the reversing piece in the non-locking position and the locked position. Movement back and forth between positions. When the reversing piece is in the non-latching position, the moving contact and the normally closed contact group are closed; when the reversing piece is switched from the non-latching position to the latching position, the pressing part drives the pushing part of the rotating shaft, so that the rotating shaft The driving part drives the moving reed row to drive the moving contact and the normally open contact group to close.

Preferably, the movement of the reversing piece is translational. The reversing piece and the moving reed row are located on the same side of the rotating shaft. The horizontal movement of the reversing piece presses the pushing part of the rotating shaft. After the rotating shaft rotates, the driving part of the rotating shaft is horizontal. Pressing activates the reed bank to lock the contacts.

Preferably, the operating part and the pressing part of the commutator piece are block-shaped structures, and the pressing part is arranged on one side of the operating part close to one end of the rotating shaft, and is directly opposite the pushing part of the rotating shaft, and the top surface of the operating part There is an upwardly raised handle on the top.

Preferably, the motion of the reversing piece is rotation, the operating part and the pressing part of the reversing piece are rod-shaped structures, one end is connected at an angle α, and there is a connection point for reversing the operating part and the pressing part. The plate rotates the reversing plate shaft rod installed on the housing, and the other end of the operating part is provided with a handle protruding along the axis of the rotating shaft of the reversing plate.

Preferably, an elastic clamping piece is provided in the housing, and the operating part of the reversing piece is provided with a limiting portion that cooperates with the elastic clamping piece. When the reversing piece is in the non-locking position or the locked position, the elastic clamping piece and the limiting part are arranged. Bit snap connection.

Preferably, the movement of the reversing piece is translational movement, the elastic clamping member is a straight elastic piece, the straight elastic piece is provided with a limiting rib, and the limiting part includes a third one arranged in sequence along the non-locking direction. a limiting groove and a second limiting groove.

Preferably, the movement of the reversing piece is rotation, and the elastic clamping member includes a first elastic piece and a second elastic piece arranged sequentially along the locking direction. The fixed ends of the first elastic piece and the second elastic piece are close to each other and the movable ends are far away from each other. It is provided that the movable end of the first elastic piece is provided with a first limiting protrusion, the movable end of the second elastic piece is provided with a second limiting protrusion, and the limiting portion is provided with the operating portion. One end of the handle, the operating part is provided with one end of the handle to press the first elastic piece and the second elastic piece downward through the first limiting convex point and the second limiting convex point respectively, and through the first limiting convex point and the second limiting convex point. Two limiting protrusions limit the commutator piece to the non-locking position and the locking position respectively.

Preferably, the pushing part of the rotating shaft extends along the axial direction of the rotating shaft rod to form a reset elastic piece, and a reset convex point is provided in the housing. When in the non-locking position, the reset elastic piece is tangent to the reset convex point, and the reset elastic piece is reset during the locking process. Resisted by the reset bump.

Preferably, the reset elastic piece extends upward to form a limiting protrusion, and the limiting protrusion is in contact with the top cover of the housing.

Preferably, the rotating shaft is a sheet structure with a rotating shaft rod in the middle. The upper part of the rotating shaft is a pushing part and the lower part is a driving part. The end of the driving part protrudes toward the moving reed row to cooperate with the moving reed row. the protrusion.

Preferably, the housing includes a coverable bottom case and a top cover. A first cavity for accommodating the rotating shaft and a second cavity for accommodating the commutator segments are arranged side by side in the bottom shell. The third cavity is arranged side by side. A mounting groove is provided in a cavity for limiting the shaft rod of the rotating shaft and rotating the rotating shaft. The first cavity and the second cavity are connected, and the pressing part of the commutator piece can enter the first cavity from the second cavity. The cavity is in contact with the pushing part of the rotating shaft; the top cover is provided with a through operation hole at a position corresponding to the commutator piece, and is used to protrude a handle for manual operation of the reversal piece.

Preferably, the top of the bottom shell is provided with a raised indicator window and a light window; the top cover is provided with a test hole corresponding to the pushing part of the rotating shaft, an indicator hole corresponding to the indicator window, and a light corresponding to the light window. holes and strip grooves. The bottom surface of the top cover is provided with an annular groove surrounding the lamp hole and a chute surrounding the indicating hole. The chute gradually slopes in the direction close to the indicating hole; the top outer side of the bottom shell is provided with There is a bayonet that fastens with the top cover, and the inside of the side of the top cover is provided with a bayonet corresponding to the bayonet.

An electromagnetic relay includes a housing, a relay mechanism in the housing, and a locking mechanism according to any one of the above technical solutions. The relay mechanism includes a moving reed row, a moving contact, a normally closed contact group, and a normally open contact. Group.

The electromagnetic relay and locking mechanism of the present utility model drive the rotating shaft by operating the reversing piece, and then drive the moving reed row to realize the locking contact. The matching method is simple and easy to operate. The reversing piece replaces the operating handle of the rotating shaft, which solves the problem of the large operating handle of the rotating shaft. The long length leads to the problem of breaking when excessive force is applied, and the rotating shaft and commutator piece are arranged in the housing, which solves the problem of easy contact in the non-locking state, causing the product to lock incorrectly.

In addition, the movement direction of the rotating shaft is consistent with the locking movement direction of the moving reed row, which also avoids the risk of the moving reed row coming out. The movement mechanism is simple, the movement mode of the reversing plate and the cooperation with the rotating shaft are simple, and there is no matching accuracy requirement for each component during the assembly process. , the assembly process is extremely simplified.

In addition, when the reversing piece is in the non-latching position or the latching position, the elastic clip is engaged with the limiting part to limit the position of the reversing piece to ensure that it will not malfunction in the non-latching state and will not reset in the latching state, so that The commutator segments remain in the non-locking or latching position.

Description of drawings

Figure 1 is a cross-sectional view of the electromagnetic relay and rotating shaft structure of the utility model in the non-latching state;

Figure 2 is a cross-sectional view of the electromagnetic relay and rotating shaft structure in the locked state of the present invention;

Figure 3 is a structural cross-sectional view of the relay and commutator segments of the utility model in the non-latching state;

Figure 4 is a structural cross-sectional view of the relay and commutator segments of the utility model in the locked state;

Figure 5 is a top view of the housing in an unlatched state according to Embodiment 1 of the present invention;

Figure 6 is a top view of the housing in a locked state in Embodiment 1 of the present invention;

Figure 7 is a top view of the inner structure of the electromagnetic relay bottom case in the non-latching state in Embodiment 1 of the present utility model;

Figure 8 is a top view of the inner structure of the electromagnetic relay bottom case in the locked state in Embodiment 1 of the present invention;

Figure 9 is a perspective view of the bottom shell of Embodiment 1 of the present utility model;

Figure 10 is a top view of the bottom shell of Embodiment 1 of the present utility model;

Figure 11 is a side view of the bottom shell of Embodiment 1 of the present utility model;

Figure 12 is a perspective view of a rotating shaft in Embodiment 1 of the present utility model;

Figure 13 is a front view of a rotating shaft in Embodiment 1 of the present utility model;

Figure 14 is a side view of the rotating shaft in Embodiment 1 of the present utility model;

Figure 15 is a perspective view of the commutator segment in Embodiment 1 of the present utility model;

Figure 16 is a front view of the commutator segment in Embodiment 1 of the present utility model;

Figure 17 is a side view of the commutator segment in Embodiment 1 of the present utility model;

Figure 18 is a perspective view of the top cover of Embodiment 1 of the present utility model;

Figure 19 is a front view of the top cover of Embodiment 1 of the present utility model;

Figure 20 is a top view of the housing in an unlatched state in Embodiment 2 of the present invention;

Figure 21 is a top view of the housing in a locked state in Embodiment 2 of the present invention;

Figure 22 is a top view of the inner structure of the electromagnetic relay bottom case in the non-latching state in Embodiment 2 of the present utility model;

Figure 23 is a top view of the inner structure of the electromagnetic relay bottom case in the locked state in Embodiment 2 of the present invention;

Figure 24 is a perspective view of the bottom shell of Embodiment 2 of the present utility model;

Relay mechanism 1; insulation piece 101; moving reed row 102; moving contact 103; normally closed contact group 104; normally open contact group 105; indicator piece 2; installation shaft 201, hinge shaft 202, indicator piece 203; bottom Shell 3; first cavity 301; installation groove 302; U-shaped side wall 3021; second cavity 303; straight elastic piece 3031; limiting rib 3032; reset bump 3033; first elastic piece 3034; first limit Bump 3035; second spring piece 3036; second limit bump 3037; indicator window 304; light window 305; bayonet 306; shaft hole 307; rotating shaft 4; reset spring piece 401; limit bump 402; pushing part 403; Rotating shaft rod 404; driving part 405; protruding part 406; reversing piece 5; operating part 501; handle 5011; first limiting groove 502; second limiting groove 503; pressing part 504; reversing piece shaft rod 505 ; Top cover 6; operating hole 601; test hole 602; indicator hole 603; light hole 604; strip groove 605; annular groove 606; buckle 607; chute 608.

Detailed ways

The specific implementation of the electromagnetic relay and the locking mechanism of the present invention will be further described below with reference to the embodiments given in the accompanying drawings. The electromagnetic relay and locking mechanism of the present invention are not limited to the description of the following embodiments.

As shown in Figures 1-4, the electromagnetic relay of this embodiment includes a housing, a relay mechanism 1 inside the housing, an indicator 2, and a locking mechanism. The relay mechanism 1 includes a moving reed row 102, a moving contact 103, Normally closed contact group 104 and normally open contact group 105, the moving reed row 102 of the electromagnetic relay is linked with the moving contact 103, and the moving contact 103 is in phase with the normally closed contact group 104 and the normally open contact group 105 correspond. The locking mechanism includes a rotating shaft 4 and a reversing piece 5 in a housing. The rotating shaft 4 is rotatably installed in the housing through a rotating shaft rod 404. The rotating shaft 4 has a pushing part 403 and a driving part 405. The reversing piece 5 5 can move between the non-latching position or the latching position. The reversing piece 5 has an operating part 501 and a pressing part 504. The operating part 501 can drive the reversing piece 5 to move back and forth between the non-latching position and the latching position. In the non-locking position, the rotating shaft 4 and the commutator piece 5 are in the initial position, the driving part 405 of the rotating shaft 4 does not press the moving reed row 102 of the relay mechanism 1, and the moving contact 103 and the normally closed contact group 104 are closed; push The operating part 501 of the reversing piece 5 switches the reversing piece 5 from the non-locking position to the latching position. The pressing part 504 drives the pushing part 403 of the rotating shaft 4, so that the driving part 405 of the rotating shaft 4 drives the driving spring plate 102 to drive the moving contact. Point 103 is closed with the normally open contact group 105 to realize a latching contact. The electromagnetic relay and locking mechanism of this embodiment drive the rotating shaft 4 by operating the reversing piece 5, and then drive the moving reed row 102 to realize the locking contact. The cooperation method is simple and easy to operate. The reversing piece 5 replaces the operating handle of the rotating shaft 4. This solves the problem of the rotating shaft operating handle being broken due to excessive force due to its long length, and the rotating shaft 4 and the reversing piece 5 are arranged in the housing, which solves the problem of easy contact in the non-locking state, causing the product to lock incorrectly.

As shown in Figures 1-4, the housing of this embodiment includes a coverable bottom case 3 and a top cover 6. A first cavity 301 for accommodating the rotating shaft 4 and a first cavity 301 for accommodating the rotating shaft 4 are arranged side by side in the bottom shell 3. The second cavity 303 of the reversing plate 5 has a mounting groove 302 inside the first cavity 301 for limiting the shaft rod 404 of the rotating shaft 4 and allowing the rotating shaft 4 to rotate. The mounting groove 302 faces upward from the opening. , two U-shaped side walls 3021 arranged symmetrically are formed. The first cavity 301 and the second cavity 303 are connected, and the pressing part 504 of the commutator piece 5 can enter the first cavity 301 from the second cavity 303 to abut the pushing part 403 of the rotating shaft 4; The top cover 6 is provided with a through operation hole 601 at a position corresponding to the reversing piece 5, for protruding the handle 5011 for manual operation of the reversing piece 5.

As shown in Figures 9-11, the top of the bottom case 3 is provided with a raised indicator window 304 and a light window 305, and the outside of the top end of the bottom case 3 is provided with a bayonet 306 that engages the top cover 6. As shown in Figures 18-19, the top cover 6 is provided with a test hole 602 corresponding to the pushing part 403 of the rotating shaft 4, an indicating hole 603 corresponding to the indicating window 304, a light hole 604 corresponding to the light window 305, for The strip groove 605 of the fixed hook and the test hole 602 are used to use a screwdriver or similar tool to insert and pull the temporary locking contact of the rotating shaft 4 in the non-locking state. The bottom surface of the top cover 6 is provided with a light hole 604 surrounding the The annular groove 606 and the inclined groove 608 surrounding the indicating hole 603 are gradually inclined in the direction close to the indicating hole 603 and are used to accommodate the bottom shell boss and can reduce the depth of the indicating hole 603 to facilitate observation. Due to the angle problem, the observation effect is deteriorated. The top cover 6 is provided with a buckle 607 corresponding to the bayonet 306 on the inner side of the side. When installing, the top cover 6 is covered on the bottom shell 3, and the buckle 607 is buckled in the bayonet 306 to realize the connection between the top cover 6 and the bottom shell 3. Shell 3 is buckled and fastened.

As shown in Figure 1-2, the indicator 2 of this embodiment has a right-angled triangle indicator body. The two acute-angle parts are respectively provided with an installation shaft 201 that is limited and assembled with the bottom case 3 and is hinged with the insulating sheet 101 of the relay mechanism 1. The other right-angled portion of the hinge shaft 202 extends upward to connect with the indicating piece 203, which is located below the indicating window 304 of the bottom case 3. As shown in Figure 1, the indicator piece 203 is in the initial position in the non-locked state; as shown in Figure 2, in the locked state, the hinge shaft 202 of the indicator piece 2 is articulated with the insulating piece 101 of the relay mechanism 1 to move synchronously, and forces the indicator piece to move synchronously. 203 is located directly below the indicator window 304.

As shown in Figures 1-2 and 22-23, the pushing portion 403 of the rotating shaft 4 extends axially along the rotating shaft rod 404 to form a reset elastic piece 401. A reset protrusion 3033 is provided in the housing. When in the non-locking position The reset spring piece 401 is tangent to the reset protrusion 3033. During the locking process, the reset spring piece 401 is resisted by the reset protrusion 3033. The reset protrusion 3033 cooperates with the reset spring piece 401 to generate a reset reaction force. The reset elastic piece 401 extends upward to form a limiting protrusion 402 . The limiting protrusion 402 abuts the top cover 6 of the housing to form an upper limit for the rotating shaft 4 .

As shown in Figures 1-2 and 12-14, the rotating shaft 4 is a sheet structure with a rotating shaft rod 404 in the middle. The upper part of the rotating shaft 4 is a pushing part 403, and the lower part is a driving part 405. The driving part 405 has The end protrudes toward the moving reed row 102 to form a protruding portion 406 that cooperates with the moving reed row 102 . The two ends of the rotating shaft rod 404 are respectively placed in the openings of the two U-shaped side walls 3021 to realize the rotational installation of the rotating shaft 4.

As shown in Figures 3-4 and 22-23, the second cavity 303 of the bottom shell 3 of the housing is provided with an elastic clamp, and the operating portion 501 of the reversing piece 5 is provided with an elastic clamp. When the reversing piece 5 is in the unlatched position or the locked position, the elastic clamping member is engaged with the limiting portion. The position of the reversing piece 5 is limited to ensure that it will not malfunction in the non-latching state and will not reset in the blocking state, so that the reversing piece 5 remains in the non-latching or blocking position.

In Embodiment 1 of the present invention, the movement of the reversing piece 5 is translational. The reversing piece 5 and the moving reed row 102 are located on the same side of the rotating shaft 4. The reversing piece 5 is located on the moving reed row 102. Above, the reversing piece 5 moves horizontally along the second cavity 303 provided on the top of the bottom case 3 to press the pushing part 403 of the rotating shaft 4. After the rotating shaft 4 rotates, the driving part 405 of the rotating shaft 4 horizontally presses the reed row 102 to lock the contacts. . The movement direction of the rotating shaft 4 is consistent with the locking movement direction of the moving reed row 102, which also avoids the risk of the moving reed row 102 coming out.

The operating part 501 and the pressing part 504 of the commutator piece 5 in this embodiment have a block structure. The pressing part 504 is provided on the side of the operating part 501 close to one end of the rotating shaft 4 and is directly opposite the pushing part 403 of the rotating shaft 4. The top surface of the operating part 501 is provided with a handle 5011 that protrudes upward and passes through the operating hole 601 of the housing. The structure of the commutator plate 5 in this embodiment is simple, the movement mode of the commutator plate 5 and the cooperation with the rotating shaft 4 are simple, the movement mechanism is simple, and there is no coordination accuracy requirement for each component during the assembly process, so the assembly process is extremely simplified.

The elastic clamping member of this embodiment is a straight elastic piece 3031. The straight elastic piece 3031 is provided with a limiting rib 3032. The limiting part of this embodiment includes a first limiter on the bottom of the operating part 501 sequentially arranged along the non-locking direction. The limiting groove 502 and the second limiting groove 503, the limiting rib 3032 snaps into the first limiting groove 502 in the non-locking position, and the limiting rib 3032 snaps into the second limiting groove 503 in the locked position. The limiting structure of the convex ribs and the groove-type commutator piece 5 has a simple structure and improves the limiting stability.

In the non-latching state of this embodiment, as shown in Figure 1, the movable contact 103 is in a closed state with the normally closed contact group 104; as shown in Figure 3, the limiting rib 3032 on the straight elastic piece 3031 snaps into the reversing state. The first limiting groove 502 of the piece 5 is in the initial position; as shown in Figure 5, the handle 5011 passes through the square operating hole 601 set on the top cover 6 and is held on the right side, correspondingly displaying OPEN or similar words; as shown in the figure As shown in 7, the recovery elastic piece 401 of the rotating shaft 4 is tangent to the reset protrusion 3033 on the left side of the bottom case 3 to maintain the initial state.

The locking action process of this embodiment is shown in Figures 2, 4, and 8. The handle 5011 of the reversing piece 5 moves to the left after being operated, the straight elastic piece 3031 of the bottom shell 3 deforms, and the limiting rib 3032 It comes out from the first limiting groove 502, enters the second limiting groove 503, and cooperates with the second limiting groove 503 of the reversing piece 5 to be in the locked position. The pressing part 504 of the reversing piece 5 pushes the pushing part of the rotating shaft 4. 403, forcing the recovery elastic piece 401 to deform relative to the reset protrusion 3033 of the bottom case 3 to accumulate potential energy, the rotating shaft 4 moves around the center of the shaft rod 404, and presses the moving reed row 102 of the relay mechanism 1 through the protruding part 406 on the driving part 405. , so that the moving contact 103 is in a closed state with the normally open contact group 105. Since the insulating piece 101 is fixedly connected to the moving reed row 102, the hinge shaft 202 of the indicator 2 moves synchronously with the insulating piece 101 of the relay mechanism 1, and The indicating piece 203 is forced to be at the position of the indicating window 304 of the bottom case 3; at the same time, a screwdriver can also be used to pass downward through the test hole 602 of the top cover 6 to press the pushing part 403 of the rotating shaft 4 to achieve the same effect. As shown in Figure 6, the handle 5011 passes through the square operating hole 601 provided on the top cover 6 and is held on the left side, with the word LOCK or similar words displayed.

When the handle 5011 of the screwdriver is taken out or the reversing plate 5 is operated to move to the right, the recovery spring piece 401 of the rotating shaft 4 releases potential energy, driving the rotating shaft 4 back to the initial position, and causing the moving contact 103 to separate from the normally open contact group 105, thereby restoring the to the non-latching state.

Embodiment 2 of the present utility model, as shown in Figures 22-23, the assembly relationship between the rotating shaft 4 and the bottom case 3 is the same as that in Embodiment 1. The difference lies in the structure and movement mode of the reversing piece 5, the elastic clamp and the limiting part. The matching structure and the second cavity 303 of the bottom case 3 are fan-shaped cavities. The movement of the reversing piece 5 in this embodiment is rotation. The operating part 501 and the pressing part 504 of the reversing piece 5 are rod-shaped structures, with one end connected at an angle α, and the operating part 501 and the pressing part 504 are connected at the intersection. There is a reversing piece shaft rod 505 for the reversing piece 5 to be rotated and installed on the housing, which matches the shaft hole 307 of the bottom case 3. The other end of the operating part 501 is provided with a reversing piece 5 along the reversing piece 5. The handle 5011 is protruding from the axis of the rotating shaft (the axial direction of the reversing plate shaft rod 505). Angle α is preferably an acute angle. The rotary reversing plate 5 makes the operation more labor-saving, the movement is smoother and more consistent, and the user experience is improved.

As shown in Figures 22-24, the elastic clamp of this embodiment includes a first elastic piece 3034 and a second elastic piece 3036 arranged sequentially along the locking direction. The fixed ends of the first elastic piece 3034 and the second elastic piece 3036 are close to each other and the movable ends thereof are close to each other. They are arranged away from each other. The movable end of the first elastic piece 3034 is provided with a first limiting protrusion 3035, and the movable end of the second elastic piece 3036 is provided with a second limiting protrusion 3037. The limiting protrusion of this embodiment The operating part 501 is provided with one end of the handle 5011. The one end of the operating part 501 is provided with the handle 5011 and presses the first spring piece 3034 and the second elastic piece 3034 downward through the first limiting protrusion 3035 and the second limiting protrusion 3037 respectively. The second elastic piece 3036 deforms and limits the reversing piece 5 in the non-locking position and the locking position through the first limiting protrusion 3035 and the second limiting protrusion 3037 respectively. Specifically, in this embodiment, the bottom of the second cavity 303 is provided with two through holes, the first elastic piece 3034 and the second elastic piece 3036 are semi-elliptical, and the first elastic piece 3034 and the second elastic piece 3036 are The size is smaller than the size of the through hole. The fixed ends of the first elastic piece 3034 and the second elastic piece 3036 are respectively connected to the side walls of the two through holes. The movable ends of the first elastic piece 3034 and the second elastic piece 3036 are connected to the side walls of the through holes. There is a movable gap between them. When moving from the non-locking state to the locking state, the operating part 501 is provided with one end of the handle 5011 to sequentially move the first elastic piece 3034 and the set first limiting protrusion 3035, the second elastic piece 3036 and the set second limiting point. The protruding point 3037 is pressed downward to deform, completes the state switching and is limited. In the locked state, the side wall of one end of the operating part 501 provided with the handle 5011 is in contact with the outside of the second limiting protruding point 3037; from the locked state to the non-locking state, When moving in the locked state direction, the operating part 501 is provided with one end of the handle 5011 to sequentially move the second elastic piece 3036 and the set second limiting protrusion 3037, the first elastic piece 3034 and the set first limiting protrusion 3035 downward. After pressing and deforming, the state switching is completed and the position is limited. In the non-locking state, the operating part 501 is provided with a handle 5011 and one end side wall is in contact with the outside of the first limiting protrusion 3035 . The operating part 501, the elastic piece and the limiting protrusion form a limiting structure of the commutating piece 5, which will not cause too much obstruction to the movement of the commutating piece 5, and can also ensure the stability of the limitation of the commutating piece 5.

In the non-latching state of this embodiment, as shown in Figure 22, the movable contact 103 is in a closed state with the normally closed contact group 104, and the operating part 501 is provided with a handle 5011 with one end limited to the first limiting protrusion 3035. Outside; as shown in Figure 20, the handle 5011 of the reversing piece 5 passes through the arc-shaped operating hole 601 provided on the top cover 6 and is held on the right side, correspondingly displaying OPEN or similar words.

The locking action process of this embodiment is as shown in Figure 23. The manual part 5011 of the reversing plate 5 is manually operated to force the reversing plate 5 to move counterclockwise around the reversing plate shaft rod 505. The operating part 501 is provided with a handle 5011. One end of the first elastic piece 3034 is pressed, moves to the left side and squeezes the second elastic piece 3036, and is finally limited to the outside of the second limiting protrusion 3037. The pressing part 504 moves and presses the pushing part 403 of the rotating shaft 4, and as implemented 1 forces the normally open contact group 105 to close and hold; similarly, the same effect can be achieved by using a screwdriver to pass through the top cover 6 and press the pushing part 403 of the rotating shaft 4 . As shown in Figure 21, the handle 5011 of the reversing piece 5 passes through the arc-shaped operating hole 601 provided on the top cover 6 and is held on the left side, correspondingly displaying LOCK or similar words.

It should be noted that in the description of the present utility model, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on those shown in the accompanying drawings. The orientation or positional relationship, or the orientation or positional relationship commonly placed during use, is only for convenience of description, and does not indicate that the device or component referred to must have a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions and cannot be understood as indicating relative importance.

The above content is a further detailed description of the present utility model in combination with specific preferred embodiments. It cannot be concluded that the specific implementation of the present utility model is limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, some simple deductions or substitutions can be made without departing from the concept of the present utility model, which should be regarded as belonging to the protection scope of the present utility model.

Claims (13)

1. The locking mechanism includes the rotating shaft (4) and the commutating piece (5) in the housing of the electromagnetic relay. The moving reed row (102) of the electromagnetic relay is linked to the moving contact (103). The moving contact (103) ) corresponds to the normally closed contact group (104) and the normally open contact group (105), and is characterized in that: the rotating shaft (4) is rotated and installed in the housing through the provided rotating shaft rod (404), and the The rotating shaft (4) has a pushing part (403) and a driving part (405). The reversing piece (5) has an operating part (501) and a pressing part (504). The operating part (501) can drive the reversing piece (5). ) moves back and forth between the non-latching position and the latching position. When the reversing piece (5) is in the non-latching position, the movable contact (103) and the normally closed contact group (104) are closed; move the reversing piece (5) from When the non-latching position is switched to the latching position, the pressing part (504) drives the pushing part (403) of the rotating shaft (4), so that the driving part (405) of the rotating shaft (4) drives the moving reed row (102) to drive the moving contact ( 103) is closed with the normally open contact group (105). 2. The locking mechanism according to claim 1, characterized in that: the movement of the reversing piece (5) is translational, and the reversing piece (5) and the moving spring plate row (102) are located on the rotating shaft (4 ), the commutator piece (5) moves horizontally to press the pushing part (403) of the rotating shaft (4), and after the rotating shaft (4) rotates, the driving part (405) of the rotating shaft (4) horizontally presses the reed row (102) ) latching contacts. 3. The locking mechanism according to claim 2, characterized in that: the operating part (501) and the pressing part (504) of the reversing piece (5) have a block structure, and the pressing part (504) is provided on the operating part. (501) is on one side close to one end of the rotating shaft (4) and directly opposite the pushing part (403) of the rotating shaft (4). There is an upwardly protruding handle (5011) on the top surface of the operating part (501). ). 4. The locking mechanism according to claim 1, characterized in that: the movement of the reversing piece (5) is rotation, and the operating part (501) and the pressing part (504) of the reversing piece (5) are It is a rod-like structure with one end connected at an angle α, and a commutator shaft rod (505) for the commutator piece (5) to be rotated and installed on the housing is provided at the intersection of the operating part (501) and the pressing part (504). , the other end of the operating part (501) is provided with a handle (5011) protruding along the axis of the rotating shaft of the commutator piece (5). 5. The locking mechanism according to any one of claims 1 to 4, characterized in that: an elastic clip is provided in the housing, and the operating portion (501) of the reversing piece (5) is provided with an elastic clip. When the reversing piece (5) is in the non-locking position or the locking position, the elastic clamping piece is engaged with the limiting part. 6. The locking mechanism according to claim 5, characterized in that: the movement of the reversing piece (5) is translational movement, the elastic clamping member is a straight elastic piece (3031), and the straight elastic piece (3031 ) is provided with a limiting rib (3032), and the limiting portion includes a first limiting groove (502) and a second limiting groove (503) arranged sequentially along the non-locking direction. 7. The locking mechanism according to claim 5, characterized in that: the movement of the reversing piece (5) is rotation, and the elastic clamping member includes a first elastic piece (3034) and a second elastic piece (3034) arranged sequentially along the locking direction. Elastic piece (3036), the fixed end of the first elastic piece (3034) and the second elastic piece (3036) are arranged close to each other and the movable end is far away from each other. The movable end of the first elastic piece (3034) is provided with a first limiting protrusion. (3035), the movable end of the second spring piece (3036) is provided with a second limiting protrusion (3037), and the limiting portion is one end of the operating part (501) with a handle (5011), One end of the operating part (501) is provided with a handle (5011) and presses the first elastic piece (3034) and the second elastic piece (3034) downward through the first limiting protrusion (3035) and the second limiting protrusion (3037) respectively. 3036) is deformed, and the commutator piece (5) is limited to the non-latching position and the latching position respectively through the first limiting convex point (3035) and the second limiting convex point (3037). 8. The locking mechanism according to any one of claims 1 to 4, characterized in that: the pushing part (403) of the rotating shaft (4) extends axially along the rotating shaft rod (404) to form a reset elastic piece (401), so There is a reset bump (3033) in the housing. When in the non-locking position, the reset spring (401) is tangent to the reset bump (3033). During the locking process, the reset spring (401) is resisted by the reset bump (3033). . 9. The locking mechanism according to claim 8, characterized in that: the reset elastic piece (401) extends upward to form a limiting protrusion (402), and the limiting protrusion (402) is connected with the top cover (402) of the housing. 6) Butt. 10. The locking mechanism according to any one of claims 1 to 4, characterized in that: the rotating shaft (4) is a sheet structure with a rotating shaft rod (404) in the middle, and the upper part of the rotating shaft (4) is a pushing part ( 403), the lower part is the driving part (405), the end of the driving part (405) protrudes toward the moving reed row (102) to form a protruding part (406) that cooperates with the moving reed row (102). 11. The locking mechanism according to claim 1, characterized in that: the housing includes a bottom housing (3) and a top cover (6) that can be closed, and the bottom housing (3) is arranged side by side for accommodating The first cavity (301) of the rotating shaft (4) and the second cavity (303) used to accommodate the commutator segment (5). The first cavity (301) is provided with a limiter for limiting the rotating shaft (4). The rotating shaft rod (404) rotates the rotating shaft (4) in the mounting groove (302), the first cavity (301) and the second cavity (303) are connected, and the pressing part of the commutator piece (5) (504) can enter the first cavity (301) from the second cavity (303) to abut the pushing part (403) of the rotating shaft (4); the top cover (6) corresponds to the reversing piece (5) A through-operated operating hole (601) is provided at the position for protruding the handle (5011) for manual operation of the reversing plate (5). 12. The locking mechanism according to claim 11, characterized in that: the top of the bottom shell (3) is provided with a raised indicator window (304) and a light window (305); the top cover (6) is provided with a raised indicator window (304) and a light window (305). There are a test hole (602) corresponding to the pushing part (403) of the rotating shaft (4), an indicating hole (603) corresponding to the indicating window (304), a light hole (604) corresponding to the light window (305), a strip Groove (605), the bottom surface of the top cover (6) is provided with an annular groove (606) surrounding the lamp hole (604) and a chute (608) surrounding the indicator hole (603). The chute (608) Gradually tilt in the direction close to the indication hole (603); the top outer side of the bottom shell (3) is provided with a bayonet (306) that snaps with the top cover (6), and the inner side of the top cover (6) A buckle (607) corresponding to the bayonet (306) is provided. 13. Electromagnetic relay, characterized in that it includes a housing, a relay mechanism (1) in the housing and a locking mechanism according to any one of claims 1 to 12, the relay mechanism (1) including a moving reed row (102) , moving contact (103), normally closed contact group (104) and normally open contact group (105).