A switch cabinet door operating hole locking device

Abstract

The utility model provides a kind of switchgear door operating hole locking device, belong to electric power equipment technical field, including rack part, lock core part and executing mechanism part.Lock core part is fixed in rack part, executing mechanism part connects lock core part and rack part;Lock core part can be rotated 90 ° by key authorization, drive the pivot of executing mechanism part, crank, connecting rod movement, and then push slider group along the waist type through -hole of rack part translation, make lock bolt retractable realize opening and closing lock.Rack part includes upper cover, lock body and lower cover, upper cover is slotted and exposes key slot, lock body is equipped with cavity and avoidance groove, lower cover limits vertical motion.The device structure is simple, operation installation is convenient, can be installed in larger range from operating hole, adapt switchgear narrow space, applicable to the anti-mislock of electric power switchgear operating hole.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a locking device for the operating hole of a switch cabinet door. Background Technology

[0002] In power system anti-misoperation systems, locks are typically used to protect various electrical equipment from unauthorized use and damage. Electrical switchgear doors usually have manual operation holes for operators to access disconnect switches or load switches inside the cabinet; these holes are normally open. To prevent equipment malfunctions or safety accidents caused by human error, a dedicated locking device must be installed on the operation hole.

[0003] However, the compact internal structure of existing electrical switchgear limits the size and installation location of locks. Conventional locks, due to their size and installation methods, cannot fit into the narrow space inside the cabinet door, making it difficult to effectively achieve the locking function and failing to meet the requirements for preventing misoperation of electrical equipment. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a locking device for the operating hole of a switch cabinet door. Addressing the problem that conventional locks are limited by the internal structure of the switch cabinet and cannot be effectively used for locking the operating hole, this invention employs a linkage slider mechanism locking scheme to reliably open and close the operating hole within the confined space of the cabinet door.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A locking device for the operating hole of a switch cabinet door includes a frame portion, a lock cylinder portion, and an actuator portion. The frame portion includes an upper cover, a lock body, and a lower cover, with the upper cover and the lower cover respectively fixed to the lock body. The lock cylinder portion is fixed within the frame portion, and the actuator portion is connected to both the lock cylinder portion and the frame portion. The lock cylinder portion is rotatable to drive the actuator portion to move, causing the latch in the actuator portion to extend and retract, thereby unlocking or locking the operating hole.

[0006] Furthermore, the top cover has a slot in the middle to expose the key slot of the lock cylinder, and the top cover is fixed to the lock body by screws.

[0007] Furthermore, the lock body is provided with a first cavity, a first groove, a second groove, and a first through hole; the first cavity is used to place and fix the lock cylinder part; the first groove is located on the lower surface of the lock body and is used to avoid the movement trajectory of the connecting rod; the second groove is located on the upper surface of the lock body, the first through hole is an elongated waist-shaped hole and is located in the middle of the second groove, and the slider group is nested in the first through hole and can move along the first through hole.

[0008] Furthermore, the inner surface of the lower cover is provided with a third groove, which is used to avoid the movement trajectory of the crank, and the lower cover is fixed to the lock body by screws.

[0009] Furthermore, the upper cover is flat, the lock body is regular cube-shaped, and the lower cover is flat.

[0010] Furthermore, the lock cylinder is an independent module that can rotate in both directions around its outer casing to switch between unlocking and locking operations.

[0011] Furthermore, the lock cylinder portion can rotate 90° clockwise and counterclockwise around its outer casing.

[0012] Furthermore, the actuator includes a rotating shaft, a crank, a connecting rod, and a slider assembly. The slider assembly includes a first slider, a second slider, a first locking shaft, and a second locking shaft. The locking tongue is connected to the slider assembly. The rotating shaft is fixed to the bottom of the lock cylinder part and can rotate synchronously with the lock cylinder part; the crank has a first hole and a second hole, the first hole is fitted on the rotating shaft, and the crank can be driven to rotate by the rotating shaft; one end of the connecting rod forms a rotating pair with the second hole of the crank through a pin, and the other end of the connecting rod forms a rotating pair with the first slider through the first locking shaft; The first locking shaft and the second locking shaft pass through the holes on the second slider, and the first locking shaft and the second locking shaft are nested in the recesses on the latch; the second slider and the lock body form a sliding pair, and the second slider can drive the latch to perform telescopic movement.

[0013] Furthermore, in the unlocked state, the bolt is retracted and does not extend outside the lock body; the upper cover and the lower cover are fixed to the lock body to restrict the vertical movement of the moving components of the actuator.

[0014] Furthermore, in the locked state, after the key is inserted into the key slot of the lock cylinder and the electronic authorization is activated, the key can drive the lock cylinder to rotate, which in turn drives the rotating shaft, the crank and the connecting rod to move in sequence. The connecting rod drives the slider group to move linearly along the first through hole of the lock body, and the slider group drives the bolt to extend out of the lock body.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Simple structure and easy operation: The rotational motion of the lock cylinder is converted into the linear extension and retraction motion of the lock tongue through the linkage slider mechanism. The transmission path is clear. The locking and unlocking operation can be completed simply by inserting the key and authorizing a 90° rotation.

[0016] 2. Flexible installation: The device has a compact overall structure and can be installed within a large range from the operating hole. It is not limited by the space of the equipment inside the cabinet and is compatible with electrical switch cabinets of different structures. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the explosion of the device of this utility model; Figure 2a This is a top view of the unlocked state of the device of this utility model; Figure 2b This is a bottom view of the unlocked state of the device of this utility model; Figure 3a This is a top view of the device in the locked state. Figure 3b This is a bottom view of the device in the locked state. Figure 4 This is a schematic diagram of the upper cover structure of the device of this utility model; Figure 5a This is a top view of the lock body of the device of this utility model; Figure 5b This is a bottom view of the lock body of the device of this utility model; Figure 6 This is a schematic diagram of the lower cover structure of the device of this utility model; Figure 7 This is a schematic diagram of the lock cylinder structure of the device of this utility model; Figure 8 This is a schematic diagram of the rotating shaft structure of the device of this utility model; Figure 9 This is a schematic diagram of the crank structure of the device of this utility model; Figure 10 This is a schematic diagram of the connecting rod structure of the device of this utility model; Figure 11 This is a schematic diagram of the first slider structure of the device of this utility model; Figure 12 This is a schematic diagram of the second slider structure of the device of this utility model; Figure 13 This is a schematic diagram of the locking tongue structure of the device of this utility model; Figure 14 This is a schematic diagram of the first pin structure of the device of this utility model; Figure 15 This is a schematic diagram of the second pin structure of the device of this utility model.

[0018] In the diagram: 110 - Frame, 111 - Top cover, 112 - Lock body, 1121 - First cavity, 1122 - First groove, 1123 - Second groove, 1124 - First through hole, 113 - Lower cover, 1131 - Third groove, 120 - Lock cylinder, 130 - Actuator, 131 - Shaft, 132 - Crank, 1321 - First hole, 1322 - Second hole, 133 - Connecting rod, 134 - First slider, 135 - Second slider, 136 - Lock tongue, 137 - First locking shaft, 138 - Second locking shaft. Detailed Implementation

[0019] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-15 As shown, the switch cabinet door operation hole locking device of this utility model includes a frame part 110, a lock cylinder part 120 and an actuator part 130. The frame part 110 consists of an upper cover 111, a lock body 112, and a lower cover 113. The upper cover 111 is fixed to the upper surface of the lock body 112 by screws, and the lower cover 113 is fixed to the lower surface of the lock body 112 by screws. The lock cylinder part 120 is fixed in the first cavity 1121 of the lock body 112. The rotating shaft 131 of the actuator part 130 is fixed to the bottom of the lock cylinder part 120 by screws. The first hole 1321 of the crank 132 is sleeved on the rotating shaft 131. The two ends of the connecting rod 133 are respectively connected to the second hole 1322 of the crank 132 and the first slider 134 through pins and the first locking shaft 137 to form a rotating pair. The slider group is nested in the first through hole 1124 of the lock body 112. The lock tongue 136 is connected to the slider group through the first locking shaft 137 and the second locking shaft 138.

[0021] like Figure 2a , 2bAs shown, when the device is in the unlocked state, the lock cylinder 120 does not rotate, the shaft 131 remains in its initial position, the crank 132 and the connecting rod 133 are in a relaxed state, and the slider group is located on the side close to the lock cylinder 120 along the first through hole 1124 of the lock body 112, driving the bolt 136 to retract into the lock body 112 and not protrude from the outside of the lock body 112; at this time, the upper cover 111 and the lower cover 113 are fixed to the lock body 112 by screws, restricting the movement of the shaft 131, crank 132, connecting rod 133 and other moving components in a direction perpendicular to the surface of the lock body 112, ensuring stable transmission.

[0022] like Figure 3a , 3b As shown, when the device is switched to the locked state, the operator inserts the key into the key slot of the lock cylinder part 120 (the key slot is exposed through the slot of the upper cover 111). After activating the electronic authorization, the key drives the lock cylinder part 120 to rotate 90° around its outer shell. When the lock cylinder part 120 rotates, it drives the bottom fixed rotating shaft 131 to rotate synchronously. The rotating shaft 131 drives the crank 132 sleeved on it to rotate around the center of the rotating shaft 131. When the crank 132 rotates, it pushes the connecting rod 133 to move away from the lock cylinder part 120 through the second hole 1322. The connecting rod 133 drives the first slider 134 to translate through the rotating joint. The first slider 134 drives the second slider 135 to move linearly along the first through hole 1124 of the lock body 112 through the first locking shaft 137 and the second locking shaft 138. When the second slider 135 moves, it pushes the latch 136 to extend out of the lock body 112 in the same direction until the latch 136 is inserted into the locking position of the switch cabinet door operating hole, completing the locking operation.

[0023] To switch from the locked state back to the unlocked state, simply insert the key again and activate the electronic authorization. This will cause the lock cylinder 120 to rotate 90° in the opposite direction, which will in turn drive the rotating shaft 131 and the crank 132 to move in the opposite direction. The connecting rod 133 will pull the slider group to reset along the first through hole 1124, and the bolt 136 will retract into the lock body 112. The operating hole will then return to its normally open state.

[0024] In this embodiment, the slot size of the upper cover 111 is adapted to the key slot of the lock cylinder part 120 to ensure that the key can be inserted smoothly; the depth and width of the first groove 1122 and the third groove 1131 of the lock body 112 are adapted to the dimensions of the connecting rod 133 and the crank 132, respectively, to avoid motion interference; the thickness of the first slider 134 and the second slider 135 of the slider group is adapted to the depth of the second groove 1123 of the lock body 112 to ensure that the slider group can move smoothly along the first through hole 1124.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A locking device for the operating hole of a switch cabinet door, characterized in that: The device includes a frame section (110), a lock cylinder section (120), and an actuator section (130). The frame section (110) includes an upper cover (111), a lock body (112), and a lower cover (113). The upper cover (111) and the lower cover (113) are fixed to the lock body (112), respectively. The lock cylinder section (120) is fixed inside the frame section (110), and the actuator section (130) is connected to the lock cylinder section (120) and the frame section (110), respectively. The lock cylinder section (120) can be rotated to drive the actuator section (130) to move, so that the latch (136) in the actuator section (130) can extend and retract to realize the unlocking or locking of the operating hole.

2. The locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, The upper cover (111) has a slot in the middle, which is used to expose the key slot of the lock cylinder part (120). The upper cover (111) is fixed to the lock body (112) by screws.

3. The locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, The lock body (112) is provided with a first cavity (1121), a first groove (1122), a second groove (1123), and a first through hole (1124); the first cavity (1121) is used to place and fix the lock cylinder part (120); the first groove (1122) is located on the lower surface of the lock body (112) and is used to avoid the movement trajectory of the connecting rod (133); the second groove (1123) is located on the upper surface of the lock body (112), the first through hole (1124) is an elongated waist-shaped hole and is located in the middle of the second groove (1123), and the slider group is nested in the first through hole (1124) and can make translational movements along the first through hole (1124).

4. The locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, The inner surface of the lower cover (113) is provided with a third groove (1131), which is used to avoid the movement trajectory of the crank (132). The lower cover (113) is fixed to the lock body (112) by screws.

5. The locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, The upper cover (111) is flat, the lock body (112) is regular cube, and the lower cover (113) is flat.

6. The locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, The lock cylinder part (120) is an independent module. The lock cylinder part (120) can rotate around its outer shell in both directions to switch between unlocking and locking operations.

7. A locking device for the operating hole of a switch cabinet door as described in claim 6, characterized in that, The lock cylinder (120) can rotate 90° forward and backward around its outer casing.

8. The locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, The actuator part (130) includes a rotating shaft (131), a crank (132), a connecting rod (133) and a slider group. The slider group includes a first slider (134), a second slider (135), a first locking shaft (137) and a second locking shaft (138). The locking tongue (136) is connected to the slider group. The rotating shaft (131) is fixed to the bottom of the lock cylinder part (120), and the rotating shaft (131) can rotate synchronously with the lock cylinder part (120); the crank (132) is provided with a first hole (1321) and a second hole (1322), the first hole (1321) is sleeved on the rotating shaft (131), and the crank (132) can be driven to rotate by the rotating shaft (131); one end of the connecting rod (133) forms a rotating pair with the second hole (1322) of the crank (132) through a pin, and the other end of the connecting rod (133) forms a rotating pair with the first slider (134) through the first locking shaft (137); The first locking shaft (137) and the second locking shaft (138) pass through the holes on the second slider (135) respectively, and the first locking shaft (137) and the second locking shaft (138) are nested in the recesses on the latch (136); the second slider (135) and the lock body (112) form a sliding pair, and the second slider (135) can drive the latch (136) to perform telescopic movement.

9. A locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, In the unlocked state, the bolt (136) is in a retracted state and does not extend outside the lock body (112); the upper cover (111) and the lower cover (113) are fixed on the lock body (112) to restrict the vertical movement of the moving components of the actuator part (130).

10. A locking device for the operating hole of a switch cabinet door as described in claim 1, characterized in that, In the locked state, after the key is inserted into the key slot of the lock cylinder (120) and the electronic authorization is activated, the key can drive the lock cylinder (120) to rotate, which in turn drives the rotating shaft (131), crank (132) and connecting rod (133) to move in sequence. The connecting rod (133) drives the slider group to move linearly along the first through hole (1124) of the lock body (112), and the slider group drives the bolt (136) to extend out of the lock body (112).

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