Interlocking mechanism of a strip-type isolating switch

Abstract

The present invention belongs to the technical field of isolating switches, and provides an interlocking mechanism of a strip isolating switch, including a strip switch body, a handle cover plate and a switch cover are arranged on the strip switch body, a handle penetrating the handle cover plate is rotatably installed in the strip switch body, and a slide groove for the handle to move is arranged on the handle cover plate; an interlocking plate is slidably installed in the handle cover plate, one end of the interlocking plate penetrates the side wall of the switch cover, and a locking block is fixedly installed on one end of the interlocking plate located in the switch cover, and a locking groove used in conjunction with the locking block is provided on the side wall of the switch cover close to the handle cover plate. Compared with the prior art, the beneficial effects of the present invention are as follows: when the switch cover is opened, it will be restricted by the locking block and cannot be opened, so that the interlocking of the switch cover and the closed state is realized, so as to avoid the switch cover from being opened by mistake in the closed state, and increase the safety of equipment use.

Description

Technical Field

[0001] The invention belongs to the technical field of isolating switches, and in particular relates to an interlocking mechanism of a strip-shaped isolating switch. Background Art

[0002] An isolating switch is a switching device without arc extinguishing function that is mainly used for "isolating power supply, switching operation, and connecting and disconnecting low current circuits". Usually when equipment or lines need to be repaired, the isolating switch can separate the equipment or lines that need to be repaired from the power supply with an obvious disconnection point to ensure the safety of maintenance personnel and equipment.

[0003] The strip isolating switch is one of the common isolating switches. The existing strip isolating switches are generally not provided with an interlocking structure, resulting in the upper cover of the strip isolating switch still being able to be opened when the switch is closed. As a result, the upper cover can be opened in the event of an erroneous operation in the closed state, which increases the danger of using the equipment. Summary of the invention

[0004] The object of the present invention is to provide an interlocking mechanism for a strip-type isolating switch, aiming to solve the technical problem in the prior art that an upper cover can be opened by mistaken operation in a closed state, thereby increasing the danger of using the equipment.

[0005] The present invention is implemented as follows: an interlocking mechanism of a strip-shaped isolating switch comprises a strip-shaped switch body, a handle cover plate and a switch upper cover are arranged on the strip-shaped switch body, a handle penetrating the handle cover plate is rotatably installed in the strip-shaped switch body, and a slide groove for the handle to move is arranged on the handle cover plate;

[0006] An interlocking plate is slidably installed in the handle cover, one end of the interlocking plate passes through the side wall of the switch upper cover and a locking block is fixedly installed on the end of the interlocking plate located in the switch upper cover, a locking groove used in conjunction with the locking block is provided on the side wall of the switch upper cover close to the handle cover, a connecting groove is provided in the middle of the interlocking plate, a connecting column extending into the connecting groove is provided on the handle, a protective plate with an arc-shaped structure is fixedly installed on the handle, and the connecting column is installed on the protective plate. In the closed state, the locking block enters the locking groove, and a micro switch located on the extension line of the interlocking plate 8 is fixedly installed in the switch body 1.

[0007] Further technical solution: A slider is slidably installed on the handle cover, the moving direction of the slider is perpendicular to the rotation plane of the handle, and a locking rod is fixedly installed on one side of the slider.

[0008] Further technical solution: A first support plate is fixedly installed on one end of the strip switch body close to the switch cover, and a movable plate used in conjunction with the switch cover is provided on the first support plate. When the movable plate moves, it drives the telescopic rod fixedly installed on the strip switch body to extend and retract, and when the telescopic rod is extended, its end enters the fixed hole opened on the locking block.

[0009] Further technical solution: a guide plate is fixedly installed on the first support plate, and the movable plate is slidably installed on the guide plate. An elastic member distributed around the guide plate is fixedly installed on the first support plate, and the movable end of the elastic member is fixedly connected to the end of the movable plate. An inclined structure used in conjunction with the switch cover is provided at the end of the movable plate away from the first support plate. When the switch cover is closed, the movable plate is pushed to move toward the side of the first support plate by the inclined structure at the end of the movable plate.

[0010] Further technical solution: A second support plate is fixedly installed on the strip switch body, a rotating shaft is rotatably installed on the second support plate, the rotating shaft is perpendicular to the movable plate, a gear is fixedly installed on the end of the rotating shaft close to the movable plate, the gear is meshed with a rack fixedly installed on the movable plate, and a first push plate is fixedly installed on the end of the rotating shaft away from the movable plate, the first push plate is used in conjunction with a second push plate fixedly installed on the telescopic rod.

[0011] Further technical solution: a groove is provided in the area where the switch cover contacts the movable plate when the switch cover is closed, and a baffle is slidably installed in the groove through a guide rod. The baffle is made of a magnetic material, and a protrusion is fixedly installed on the baffle, and a magnet is fixedly installed in the groove. When the baffle is fixed in contact with the magnet, the side of the protrusion away from the baffle is flush with the inner wall of the switch cover, and the baffle is driven to move when the locking block moves.

[0012] Further technical solution: A horizontal plate is fixedly installed on the shielding plate, and two groups of vertical plates distributed at intervals are fixedly installed on the horizontal plate. The vertical plate is used in conjunction with a power plate fixedly installed on the locking block, and the power plate is located between the two groups of vertical plates.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When closing the switch, the handle rotates to the side away from the switch cover. During the rotation of the handle, the connecting column moves in the connecting groove. When the connecting column contacts the side of the connecting groove, it pushes the interlocking plate to move. The interlocking plate drives the locking block to move into the locking groove. Since the locking block is located in the locking groove, the switch cover will be restricted by the locking block and cannot be opened when it is opened. The interlocking of the switch cover and the closed state is realized, avoiding the switch cover from being accidentally opened in the closed state, and increasing the safety of equipment use.

[0015] 2. When the switch cover is opened after the switch is opened, the switch cover no longer restricts the moving plate. At this time, the elastic member will push the moving plate to move. The moving plate drives the rotating shaft to rotate through the meshing gear and rack. When the shaft rotates, the first push plate moves upward. The first push plate drives the telescopic rod to extend through the second push plate, so that the upper end of the telescopic rod enters the fixed hole under the locking block. The movement of the locking block is restricted by the telescopic rod, and the locking block and the switch cover are automatically interlocked to ensure that the handle cannot be rotated after the switch cover is opened, and the switch cover is prevented from being closed after the switch cover is opened, thereby further improving the safety of equipment use.

[0016] 3. When closing the switch, the locking block moves to the side close to the handle cover. During the movement of the locking block, the power plate contacts the vertical plate in front of its moving direction. Then the power plate pushes the shielding plate to move through the vertical plate and the horizontal plate, so that the shielding plate is separated from the magnet. At this time, the movable plate moves under the action of the elastic member to release the compression of the elastic member. When the locking block is reset, the shielding plate moves to the innermost side of the groove. At this time, the elastic member is in its original length state, so that during the use of the closing worker, the elastic member is in its original length state, avoiding the elastic member being in a compressed state all the time, avoiding the inability to restrict and fix the locking block due to long-term compression deformation of the elastic member, thereby increasing the service life of the equipment and further improving the safety of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the locking block in the present invention.

[0019] Figure 3 It is a schematic structural diagram of the first viewing angle of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the second viewing angle of the present invention.

[0021] Figure 5 for Figure 3 A magnified schematic diagram of the A1 region in the middle.

[0022] Figure 6 It is a schematic diagram of the structure of the movable plate in the present invention.

[0023] Figure 7 for Figure 6 A magnified schematic diagram of the A2 region in the middle.

[0024] Figure 8 It is a schematic diagram of the cross-sectional structure of the groove in the present invention.

[0025] In the accompanying drawings: 1. bar switch body; 2. handle cover; 3. switch cover; 4. handle; 5. slider; 6. locking rod; 7. connecting column; 8. interlocking plate; 9. connecting groove; 10. locking block; 11. locking groove; 12. first support plate; 13. guide plate; 14. moving plate; 15. elastic member; 16. second support plate; 17. rotating shaft; 18. gear; 19. first push plate; 20. telescopic rod; 21. second push plate; 22. rack; 23. groove; 24. shielding plate; 25. guide rod; 26. bump; 27. magnet; 28. horizontal plate; 29. ​​vertical plate; 30. power plate. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] like Figure 1-Figure 5 As shown, an interlocking mechanism of a strip-shaped isolating switch provided by the present invention comprises a strip-shaped switch body 1, a handle cover plate 2 and a switch upper cover 3 are arranged on the strip-shaped switch body 1, a handle 4 penetrating the handle cover plate 2 is rotatably installed in the strip-shaped switch body 1, and a slide groove for the handle 4 to move is arranged on the handle cover plate 2, a slider 5 is slidably installed on the handle cover plate 2, and the moving direction of the slider 5 is perpendicular to the rotation plane of the handle 4, and a locking rod 6 is fixedly installed on one side of the slider 5;

[0029] An interlocking plate 8 is slidably installed in the handle cover 2, one end of the interlocking plate 8 passes through the side wall of the switch upper cover 3 and a locking block 10 is fixedly installed on the end of the interlocking plate 8 located in the switch upper cover 3, a locking groove 11 used in conjunction with the locking block 10 is provided on the side wall of the switch upper cover 3 close to the handle cover 2, a connecting groove 9 is provided in the middle of the interlocking plate 8, a connecting column 7 extending into the connecting groove 9 is provided on the handle 4, a protective plate with an arc structure is fixedly installed on the handle 4, and the connecting column 7 is installed on the protective plate. In the closed state, the locking block 10 enters the locking groove 11, and a micro switch located on the extension line of the interlocking plate 8 is fixedly installed in the bar switch body 1.

[0030] When the present embodiment is actually used, the staff pushes the handle 4 to rotate, and when the handle 4 rotates, the internal components are driven to operate to close or open the switch. When closing the switch, the handle 4 rotates to the side away from the switch cover 3. During the rotation of the handle 4, the slide groove on the handle cover 2 is closed by the protective plate to prevent foreign matter from entering the interior of the device, thereby improving the sealing of the device. The connecting column 7 moves in the connecting groove 9. When the connecting column 7 contacts the side of the connecting groove 9, the interlocking plate 8 is pushed to move. The interlocking plate 8 drives the locking block 10 to move into the locking groove 11. Since the locking block 10 is located in the locking groove 11, the switch cover 3 is restricted by the locking block 10 when it is opened and cannot be opened, thereby realizing the interlocking of the switch cover 3 with the closed state, preventing the switch cover 3 from being opened by mistake in the closed state, thereby increasing the safety of the device.

[0031] When opening the switch, the handle 4 rotates toward the side close to the switch cover 3. When the handle 4 rotates, the interlocking plate 8 is driven to move through the connecting column 7, so that the locking block 10 leaves the locking groove 11. After leaving the locking groove 11, the locking block 10 hits the micro switch at the front end of its moving direction. At this time, the switch cover 3 can be opened, and then the slider 5 is pushed to move horizontally to make the locking rod 6 interfere with the rotation trajectory of the handle 4, so as to prevent the handle 4 from being directly pushed back to close the switch, thereby further increasing the safety of the equipment.

[0032] like Figure 1-Figure 7 As shown, an interlocking mechanism of a strip isolating switch provided by the present invention is provided. A first support plate 12 is fixedly mounted on one end of the strip switch body 1 close to the switch upper cover 3. A movable plate 14 used in conjunction with the switch upper cover 3 is provided on the first support plate 12. When the movable plate 14 moves, the telescopic rod 20 fixedly mounted on the strip switch body 1 is driven to extend and retract. When the telescopic rod 20 is extended, the end thereof enters the fixed hole provided on the locking block 10.

[0033] Specifically, a guide plate 13 is fixedly mounted on the first support plate 12, and a movable plate 14 is slidably mounted on the guide plate 13. An elastic member 15 distributed around the guide plate 13 is fixedly mounted on the first support plate 12, and a movable end of the elastic member 15 is fixedly connected to an end of the movable plate 14. An end of the movable plate 14 away from the first support plate 12 is provided with an inclined structure for use with the switch cover 3. When the switch cover 3 is closed, the inclined structure at the end of the movable plate 14 pushes the movable plate 14 to move toward the side of the first support plate 12.

[0034] Specifically, a second support plate 16 is fixedly mounted on the strip switch body 1, a rotating shaft 17 is rotatably mounted on the second support plate 16, the rotating shaft 17 is perpendicular to the moving plate 14, a gear 18 is fixedly mounted on one end of the rotating shaft 17 close to the moving plate 14, the gear 18 is meshed with a rack 22 fixedly mounted on the moving plate 14, a first push plate 19 is fixedly mounted on one end of the rotating shaft 17 away from the moving plate 14, and the first push plate 19 is used in conjunction with a second push plate 21 fixedly mounted on the telescopic rod 20.

[0035] When the switch cover 3 is opened after the switch is opened, the switch cover 3 no longer restricts the movable plate 14. At this time, the elastic member 15 will push the movable plate 14 to move, and the movable plate 14 drives the rotating shaft 17 to rotate through the meshing gear 18 and the rack 22. The rotating shaft 17 makes the first push plate 19 move upward, and the first push plate 19 drives the telescopic rod 20 to extend through the second push plate 21, so that the upper end of the telescopic rod 20 enters the fixing hole below the locking block 10, and the movement of the locking block 10 is restricted by the telescopic rod 20, so as to realize the automatic interlocking of the locking block 10 and the switch cover 3, so as to ensure that the handle 4 cannot be rotated after the switch cover 3 is opened, and the closing of the switch cover 3 after opening is avoided, thereby further improving the safety of the equipment.

[0036] When the switch cover 3 is closed, the switch cover 3 contacts the inclined surface of the end face of the movable plate 14 and pushes the movable plate 14 to move toward the side where the first support plate 12 is located. When the movable plate 14 moves, the elastic member 15 is compressed and the rotating shaft 17 is driven to rotate in the opposite direction through the meshing gear 18 and the rack 22. At this time, the first push plate 19 moves downward. After the first push plate 19 no longer applies thrust to the second push plate 21, the telescopic rod 20 is reset to the shortest state and disengaged from the locking block 10. In the remote state of the telescopic rod 20, a gap is set between its upper end face and the lower surface of the locking block 10. At this time, the locking block 10 can move. Of course, an elastic line can be added to connect the telescopic rod 20 so that the elastic line is stretched when the telescopic rod 20 is extended, and a pulling force is applied to the subsequent reset of the telescopic rod 20 through the elastic force of the elastic line.

[0037] In an embodiment of the present invention, the elastic member 15 is a spring, and can also be other elastic members such as an elastic ball, and the spring is compressed to apply a thrust to the movable plate 14 .

[0038] like Figure 5 , Figure 8 As shown, an interlocking mechanism of a strip isolating switch provided by the present invention is provided. A groove 23 is provided in the area where the switch cover 3 contacts the movable plate 14 when the switch cover 3 is closed. A baffle plate 24 is slidably installed in the groove 23 through a guide rod 25. The baffle plate 24 is made of a magnetic material. A protrusion 26 is fixedly installed on the baffle plate 24. A magnet 27 is fixedly installed in the groove 23. When the baffle plate 24 is in contact and fixed with the magnet 27, the side of the protrusion 26 away from the baffle plate 24 is flush with the inner wall of the switch cover 3, and the baffle plate 24 is driven to move when the locking block 10 moves.

[0039] Specifically, a horizontal plate 28 is fixedly mounted on the shielding plate 24 , and two groups of vertical plates 29 distributed at intervals are fixedly mounted on the horizontal plate 28 . The vertical plates 29 are used in conjunction with a power plate 30 fixedly mounted on the locking block 10 , and the power plate 30 is located between the two groups of vertical plates 29 .

[0040] In actual application of this embodiment, when closing the switch, the locking block 10 moves to the side close to the handle cover plate 2. During the movement of the locking block 10, the power plate 30 contacts the vertical plate 29 on the front side of its moving direction. Then, the power plate 30 pushes the shielding plate 24 to move through the vertical plate 29 and the horizontal plate 28, so that the shielding plate 24 is separated from the magnet 27. At this time, the movable plate 14 moves under the action of the elastic member 15, and the compression of the elastic member 15 is released. When the locking block 10 is reset, the shielding plate 24 moves to the innermost side of the groove 23. At this time, the elastic member 15 is in the original length state, so that during the use of the closing worker, the elastic member 15 is in the original length state, so that the elastic member 15 is always in the compressed state, and the locking block 10 cannot be restricted and fixed due to the long-term compression deformation of the elastic member 15, thereby improving the service life of the equipment and further improving the safety of the equipment.

[0041] When opening the switch, the locking block 10 moves in the direction away from the handle cover 2. After moving to the set position, the locking block 10 contacts the vertical plate 29 in front of its moving direction. Then the locking block 10 can drive the baffle plate 24 to reset. When the baffle plate 24 contacts the magnet 27, the locking block 10 moves to the opening position. At this time, the telescopic rod 20 is in the shortest state and the first push plate 19 contacts the second push plate 21. The baffle plate 24 is fixed by the magnet 27. After the switch cover 3 is opened, the moving plate 14 can continue to move so that the telescopic rod 20 limits the locking block 10.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0043] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An interlocking mechanism for a strip-shaped isolating switch, comprising a strip-shaped switch body (1), characterized in that: The strip-shaped switch body (1) is provided with a handle cover (2) and a switch upper cover (3); a handle (4) penetrating the handle cover (2) is rotatably mounted in the strip-shaped switch body (1); and a slide groove for the handle (4) to move is provided on the handle cover (2); An interlocking plate (8) is slidably mounted in the handle cover (2), one end of the interlocking plate (8) penetrates the side wall of the switch cover (3) and a locking block (10) is fixedly mounted on the end of the interlocking plate (8) located in the switch cover (3), a locking groove (11) for use with the locking block (10) is provided on the side wall of the switch cover (3) close to the handle cover (2), a connecting groove (9) is provided in the middle of the interlocking plate (8), a connecting column (7) extending into the connecting groove (9) is provided on the handle (4), a protective plate with an arc structure is fixedly mounted on the handle (4), the connecting column (7) is mounted on the protective plate, in the closed state, the locking block (10) enters the locking groove (11), and a micro switch located on the extension line of the interlocking plate (8) is fixedly mounted in the bar switch body (1); A first support plate (12) is fixedly mounted on one end of the strip-shaped switch body (1) close to the switch upper cover (3); a moving plate (14) for use with the switch upper cover (3) is arranged on the first support plate (12); when the moving plate (14) moves, the telescopic rod (20) fixedly mounted on the strip-shaped switch body (1) is driven to extend and retract; when the telescopic rod (20) is extended, the end of the telescopic rod (20) enters a fixed hole provided on the locking block (10); A guide plate (13) is fixedly mounted on the first support plate (12), and a movable plate (14) is slidably mounted on the guide plate (13). An elastic member (15) distributed around the guide plate (13) is fixedly mounted on the first support plate (12), and a movable end of the elastic member (15) is fixedly connected to an end of the movable plate (14). An inclined surface structure for use with a switch cover (3) is provided at one end of the movable plate (14) away from the first support plate (12). When the switch cover (3) is closed, the movable plate (14) is pushed to move toward the side of the first support plate (12) by the inclined surface structure at the end of the movable plate (14).

2. The interlocking mechanism of a strip-type isolating switch according to claim 1, characterized in that: A slider (5) is slidably mounted on the handle cover plate (2); the moving direction of the slider (5) is perpendicular to the rotation plane of the handle (4); and a locking rod (6) is fixedly mounted on one side of the slider (5).

3. The interlocking mechanism of a strip-type isolating switch according to claim 1, characterized in that: The strip switch body (1) is fixedly mounted with a second support plate (16), and a rotating shaft (17) is rotatably mounted on the second support plate (16). The rotating shaft (17) is perpendicular to the moving plate (14). A gear (18) is fixedly mounted on one end of the rotating shaft (17) close to the moving plate (14). The gear (18) is meshed with a rack (22) fixedly mounted on the moving plate (14). A first push plate (19) is fixedly mounted on one end of the rotating shaft (17) away from the moving plate (14). The first push plate (19) is used in conjunction with a second push plate (21) fixedly mounted on the telescopic rod (20).

4. The interlocking mechanism of a strip-type isolating switch according to claim 1, characterized in that: A groove (23) is provided in the area where the switch cover (3) contacts the movable plate (14) when the switch cover (3) is closed, a shielding plate (24) is slidably mounted in the groove (23) via a guide rod (25), the shielding plate (24) is made of a magnetic material, a protrusion (26) is fixedly mounted on the shielding plate (24), a magnet (27) is fixedly mounted in the groove (23), when the shielding plate (24) is in contact and fixed with the magnet (27), the side of the protrusion (26) away from the shielding plate (24) is flush with the inner side wall of the switch cover (3), and when the locking block (10) moves, the shielding plate (24) is driven to move.

5. The interlocking mechanism of a strip-type isolating switch according to claim 4, characterized in that: A horizontal plate (28) is fixedly mounted on the shielding plate (24), and two groups of vertical plates (29) are fixedly mounted on the horizontal plate (28) and are spaced apart from each other. The vertical plates (29) are used in conjunction with a power plate (30) fixedly mounted on the locking block (10), and the power plate (30) is located between the two groups of vertical plates (29).

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