A switch cabinet door lock and a locking method

Abstract

The application develops a switch cabinet door lock and locking method, which comprises a rack, a lock core and an executing mechanism; the rack comprises an upper cover, a lock body and a lower cover, the middle part of the lock body is provided with a first cavity, the lower surface of the lock body is structured with an irregular first groove, the upper surface of the lock body is structured with a rectangular second groove, the second groove extends to one side end surface of the lock body, a long strip type first through hole is arranged in the middle part of the second groove, the upper cover and the lower cover are respectively connected to the upper surface and the lower surface of the lock body, the lock body further comprises a lock tongue and an executing mechanism, the lock tongue is arranged in the second groove, the executing mechanism is connected with the lock core and the lock tongue, when the lock core rotates, the executing mechanism drives the lock tongue to do the extension and retraction movement, and the opening and closing states are realized. The switch cabinet door lock and locking method provided by the application adopts the closing scheme of the connecting rod and slider mechanism, realizes the opening and closing of the operation hole in the narrow cabinet door, and the closing is stable and reliable.

Description

Technical Field

[0001] This invention belongs to the field of power equipment technology, and specifically relates to a switch cabinet door lock and locking method. Background Technology

[0002] Currently, in power system anti-misoperation systems, locks are typically used to protect various electrical equipment from unauthorized use and damage. Electrical switchgear doors generally have manual operation holes for easy access to disconnect switches or load switches inside. These operation holes are normally open, and in practice, a locking device is needed to prevent accidental operation. However, due to the internal structure of the switchgear, the size and installation location of locks are limited, making conventional locks unsuitable for use inside the cabinet door. To address these issues, this patent designs a lock for the operation hole of a switchgear door. Summary of the Invention

[0003] To address the problems mentioned in the background art, this invention proposes a switch cabinet door lock and locking method to enable the opening and closing of the operating hole within a narrow cabinet door.

[0004] The technical objective of this invention is achieved through the following technical solution: In one aspect, this invention provides a switch cabinet door lock, including a frame, a lock cylinder, and an actuator.

[0005] The frame includes an upper cover, a lock body, and a lower cover. The lock body has a first cavity in the middle for placing and fixing the lock cylinder. The lower surface of the lock body has an irregular first groove, and the upper surface of the lock body has a rectangular second groove. The second groove extends to one end face of the lock body. A long strip-shaped first through hole is opened in the middle of the second groove. The upper cover and the lower cover are respectively connected to the upper surface and the lower surface of the lock body.

[0006] The lock cylinder is located in the first cavity and has a keyhole. When a key is inserted and authorized to turn the lock cylinder, the lock cylinder rotates 90° in both directions to perform the unlocking and locking operations.

[0007] It also includes a locking tongue, which is disposed within the second groove;

[0008] It also includes an actuator, which is connected to both the lock cylinder and the bolt. When the lock cylinder rotates, the actuator causes the bolt to extend and retract, thus achieving the unlocked and locked states.

[0009] Preferably, the actuator includes a rotating shaft, a crank, a connecting rod, a first slider, a second slider, a first pin, and a second pin; the first slider is disposed in the first groove, the second slider is disposed in the second groove, the first slider and the second slider have two sets of corresponding through holes, the first slider and the second slider are connected by the first pin and the second pin, the rotating shaft is fixed to the bottom of the lock cylinder and rotates synchronously with the lock cylinder, one end of the crank is sleeved on the rotating shaft through the first hole, and the other end is rotatably connected to the connecting rod through the second hole, the other end of the connecting rod is rotatably connected to the first slider, the first groove is used to avoid the movement trajectory of the connecting rod, and the latch is rotatably connected to the second slider.

[0010] Preferably, the upper cover and the lower cover are detachably connected to the lock body.

[0011] In another aspect, the present invention provides a method for locking a switch cabinet door, wherein a switch cabinet door lock as described in any of the above claims is installed on the switch cabinet door, and an insertion hole is made at the position corresponding to the lock tongue, so that the lock tongue can be inserted into the insertion hole during the extension and retraction movement, an unlocking key is inserted into the lock cylinder, and the lock cylinder is rotated 90° to make the lock tongue insert or retract into the insertion hole, so as to realize the unlocked state and the locked state.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention provides a switch cabinet door lock and locking method, which adopts a locking scheme of linkage slider mechanism, realizing the opening and closing of the operation hole in the narrow cabinet door, and the locking is stable and reliable.

[0014] The present invention provides a switch cabinet door lock with a compact structure, tight connection, stable and reliable locking state, and good protection for the lock body due to the use of upper and lower covers to enclose the lock body, resulting in a long service life. Attached Figure Description

[0015] Figure 1 This is an exploded structural diagram of a switch cabinet door lock according to the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the lock body in this invention.

[0017] Figure 3 This is a top view of the lock body in this invention.

[0018] Figure 4 This is a top view of the lower cover structure in this invention.

[0019] Figure 5 This is a schematic diagram of the lock cylinder structure in this invention.

[0020] Figure 6 This is a schematic diagram of the rotating shaft in this invention.

[0021] Figure 7 This is a schematic diagram of the crank mechanism in this invention.

[0022] Figure 8 This is a schematic diagram of the connecting rod in this invention.

[0023] Figure 9 This is a schematic diagram of the structure of slider one in this invention.

[0024] Figure 10 This is a schematic diagram of the structure of slider two in this invention.

[0025] Figure 11 This is a schematic diagram of the locked state of the lock body in this invention.

[0026] In the above figures: 110, frame; 111, upper 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, rotating shaft; 132, crank; 133, connecting rod; 134, slider one; 135, slider two; 136, lock tongue; 137, pin one; 138, pin two. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] See Figures 1-10 As a preferred embodiment of the present invention, this embodiment provides a switch cabinet door lock, including a frame 110, a lock cylinder 120 and an actuator 130;

[0029] The frame 110 includes an upper cover 111, a lock body 112, and a lower cover 113, such as Figure 2 and Figure 3 As shown, the lock body 112 has a first cavity 1121 in the middle for placing and fixing the lock cylinder 120. The lower surface of the lock body 112 has an irregular first groove 1122, and the upper surface of the lock body 112 has a rectangular second groove 1123. The second groove 1123 extends to one end face of the lock body 112. A long strip-shaped first through hole 1124 is opened in the middle of the second groove 1123. The upper cover 111 and the lower cover 113 are respectively connected to the upper surface and the lower surface of the lock body 112.

[0030] The lock cylinder 120 is disposed within the first cavity 1121, such as Figure 5 As shown, the lock cylinder 120 is provided with a keyhole. When a key is inserted and authorized to rotate the lock cylinder 120, the lock cylinder 120 rotates 90° in both directions to perform unlocking and locking operations.

[0031] like Figure 11 As shown, it also includes a locking tongue 136, which is disposed in the second groove 1123;

[0032] It also includes an actuator 130, which is connected to both the lock cylinder 120 and the bolt 136. When the lock cylinder 120 rotates, the actuator 130 causes the bolt 136 to extend and retract, thereby achieving the unlocked and locked states.

[0033] Specifically, such as Figure 1 , Figures 5-11 As shown, the actuator 130 includes a rotating shaft 131, a crank 132, a connecting rod 133, a first slider 134, a second slider 135, a first pin 137, and a second pin 138. The first slider 134 is disposed in the first groove 1124, and the second slider 135 is disposed in the second groove 1123. The first slider 134 and the second slider 135 have two sets of corresponding through holes. The first slider 134 and the second slider 135 are connected by the first pin 137 and the second pin 138. The second pin 138 is connected, the rotating shaft 131 is fixed to the bottom of the lock cylinder 120 and rotates synchronously with the lock cylinder 120. One end of the crank 132 is sleeved on the rotating shaft 131 through the first hole 1321, and the other end is rotatably connected to the connecting rod 133 through the second hole 1322. The other end of the connecting rod 133 is rotatably connected to the first slider 134. The first groove 1122 is used to avoid the movement trajectory of the connecting rod 133. The locking tongue 136 is rotatably connected to the second slider 135.

[0034] In the above embodiment, the upper cover 111 has an opening in the middle to expose the key slot of the lock cylinder, such as... Figure 4 As shown, the upper surface of the lower cover 113 is provided with a third groove 1131. The third groove 1131 is used to avoid the movement trajectory of the crank 132. The slider 134 and the slider 2 135 move in the through hole, thereby driving the locking tongue 136 to move in a translational extension and retraction motion to realize locking and unlocking.

[0035] In some preferred embodiments, for ease of manufacturing and assembly, as well as for maintenance and replacement during use, the upper cover 111 and the lower cover 113 are detachably connected to the lock body 112 by screws.

[0036] According to the present invention, a switch cabinet door locking method is provided, wherein a switch cabinet door lock as described in any of the above-mentioned claims is installed on the switch cabinet door, and an insertion hole is made at the position corresponding to the lock tongue 136, so that the lock tongue 136 can be inserted into the insertion hole during the extension and retraction movement. An unlocking key is inserted into the lock cylinder 120, and the lock cylinder 120 is rotated 90° to make the lock tongue 136 insert or retract into the insertion hole, thereby realizing the unlocked state and the locked state.

[0037] In this invention, slider 134 is disposed in the first groove 1124, and slider 2135 is disposed in the second groove 1123. Slider 134 and slider 2135 have two sets of corresponding through holes. Slider 134 and slider 2135 are connected by pin 137 and pin 2138. The rotating shaft 131 is fixed to the bottom of the lock cylinder 120 and rotates synchronously with the lock cylinder 120. One end of the crank 132 is sleeved on the rotating shaft 131 through the first hole 1321, and the other end is rotatably connected to the connecting rod 133 through the second hole 1322. The other end of the connecting rod 133 is rotatably connected to slider 134. The first groove 1122 is used to avoid the movement trajectory of the connecting rod 133. The latch 136 is rotatably connected to slider 2135. When the lock cylinder 120 is turned with a key, the lock cylinder causes slider 2135 to push or pull the latch 136 to make linear displacement, thus realizing locking or unlocking.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention 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 the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A switch cabinet door lock, characterized in that, It includes a frame (110), a lock cylinder (120), and an actuator (130). The frame (110) includes an upper cover (111), a lock body (112) and a lower cover (113). The lock body (112) has a first cavity (1121) in the middle for placing and fixing the lock cylinder (120). The lower surface of the lock body (112) has an irregular first groove (1122), and the upper surface of the lock body (112) has a rectangular second groove (1123). The second groove (1123) extends to one end face of the lock body (112), and a long strip first through hole (1124) is opened in the middle of the second groove (1123). The upper cover (111) and the lower cover (113) are respectively connected to the upper surface and the lower surface of the lock body (112). The lock cylinder (120) is disposed in the first cavity (1121). The lock cylinder (120) is provided with a keyhole. When a key is inserted and authorized to rotate the lock cylinder (120), the lock cylinder (120) rotates 90° in both directions to perform unlocking and locking operations. It also includes a locking tongue (136), which is disposed in the second groove (1123); It also includes an actuator (130), which is connected to both the lock cylinder (120) and the bolt (136). When the lock cylinder (120) rotates, the actuator (130) drives the bolt (136) to extend and retract, thereby achieving the unlocked and locked states. The actuator (130) includes a rotating shaft (131), a crank (132), a connecting rod (133), a first slider (134), a second slider (135), a first pin (137), and a second pin (138). The first slider (134) is disposed in the first groove (1124), and the second slider (135) is disposed in the second groove (1123). The first slider (134) and the second slider (135) have two sets of corresponding through holes. The first slider (134) and the second slider (135) are connected by the first pin (137) and the second pin (138). The second pin (138) is connected, the rotating shaft (131) is fixed at the bottom of the lock cylinder (120) and rotates synchronously with the lock cylinder (120). One end of the crank (132) is sleeved on the rotating shaft (131) through the first hole (1321), and the other end is rotatably connected to the connecting rod (133) through the second hole (1322). The other end of the connecting rod (133) is rotatably connected to the first slider (134). The first groove (1122) is used to avoid the movement trajectory of the connecting rod (133). The latch (136) is rotatably connected to the second slider (135).

2. The switch cabinet door lock according to claim 1, characterized in that, The upper cover (111) and lower cover (113) are detachably connected to the lock body (112).

3. A method for locking the switch cabinet door, characterized in that, The switch cabinet door lock according to claim 1 or 2 is installed on the switch cabinet door, and an insertion hole is opened at the position corresponding to the lock tongue (136) so that the lock tongue (136) can be inserted into the insertion hole during the extension and retraction movement. The unlocking key is inserted into the lock cylinder (120), and the lock cylinder (120) is rotated 90° so that the lock tongue (136) is inserted into or withdrawn from the insertion hole to realize the unlocked state and the locked state.

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