Locking device capable of resetting automatically

Abstract

The utility model discloses an automatic reset locking device which is arranged on a partition plate and a supporting plate of a switch cabinet, the partition plate abuts against the supporting plate, the locking device comprises a handle and a support, the support is fixedly connected to the bottom of the supporting plate, the handle comprises a straight rod arranged on the support in a penetrating mode, and the straight rod is fixedly connected with the support. The straight rod can rotate relative to the support with the axis of the straight rod as the rotation center and move in the axial direction. The handle installed on the supporting plate is adopted, locking with the partition plate is achieved through rotation and axial push-pull actions, the partition plate is provided with the through hole and interacts with the cylindrical pin at the tail end of the handle, the supporting plate is supported through the straight rod and the through hole, and large impact force is effectively borne; the simple straight rod structure effectively avoids the blocking problem caused by impact deformation, meanwhile, the interaction of the cylindrical pin and the through hole shape can completely limit the axial action of the straight rod, and the separation problem under impact is effectively avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of switch cabinet equipment, and relates to a locking device with automatic reset. Background Art

[0002] At present, for the work of the trolley entering and leaving the cabinet of the armored draw-out indoor metal-clad switch cabinet, the auxiliary work of the trolley entering and leaving the cabinet is mostly carried out through an external guiding device. There are many personalized external guiding device products, and there are various forms such as guide rails and transfer trolleys according to different requirements. However, the common point is that when setting the external guiding device, it generally needs to be firmly locked with the cabinet body first to ensure the stability of the external guiding device. The existing locking methods are generally in the form of hooks or some complex interlocking structures. During the process of the trolley entering and leaving the cabinet, due to the large self-weight of the trolley, certain bump impacts may occur. Under this form of impact, the existing locking structure is prone to unhooking, or the interlocking structure deforms under the impact, and the complex structure makes it easy to get stuck under slight deformation. Therefore, the stability and safety of the external guiding device cannot be guaranteed. Content of the Utility Model

[0003] The utility model aims to overcome the deficiencies of the prior art and provides a locking device with automatic reset.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A locking device with automatic reset is arranged on the partition board and the supporting board of the switch cabinet. The partition board abuts against the supporting board. The locking device includes a handle and a bracket. The bracket is fixedly connected to the bottom of the supporting board. The handle includes a straight rod passing through the bracket. The straight rod can rotate around its own axis and move axially relative to the bracket. A through hole for the axial passing of one end of the straight rod is opened on the partition board. A cylindrical pin is fixedly arranged on the straight rod for abutting against the side wall of the through hole in the axial direction of the straight rod.

[0006] Further, the through hole is in a rectangular structure, and the cylindrical pin is arranged along the radial direction of the straight rod.

[0007] Further, the number of the cylindrical pins is set to two. The two cylindrical pins are arranged in parallel and form a set spacing, and the set spacing is greater than the thickness of the through hole.

[0008] Further, it further includes a limiting frame. The limiting frame is fixedly connected to the supporting board. A limiting groove for the straight rod to pass through is arranged on the limiting frame. A limiting pin is arranged on the straight rod. First limiting surfaces and second limiting surfaces for respectively abutting against the limiting pin are formed on the inner wall of the limiting groove.

[0009] Further, a torsion spring is provided on the bracket, and two ends of the torsion spring are respectively connected to the bracket and the straight rod.

[0010] Further, one end of the straight rod is bent to form a handle, and a spherical ball is provided at the end of the handle.

[0011] In summary, the beneficial effects of the present utility model are as follows:

[0012] The present utility model adopts a handle installed on a tray, and through rotation and axial push-pull actions, locking with a partition is achieved. A through hole is provided on the partition, which interacts with a cylindrical pin at the end of the handle. The straight rod forms a support for the tray through the through hole and can effectively bear large impact forces. The simple structure of the straight rod effectively avoids the jamming problem caused by impact deformation. At the same time, the interaction between the shapes of the cylindrical pin and the through hole can completely limit the axial movement of the straight rod, effectively avoiding the problem of detachment under impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of the positional relationship between the partition and the tray of the present utility model.

[0014] Figure 2 is Figure 1 a schematic structural diagram of the locking device in

[0015] Figure 3 is Figure 2 an enlarged schematic diagram of A in

[0016] Figure 4 is Figure 2 an enlarged schematic diagram of B in

[0017] Figure 5 is Figure 2 an enlarged schematic diagram of C in

[0018] Figure 6 is Figure 5 a schematic structural diagram when the straight rod is in the unlocked position in

[0019] Reference numerals in the figures: 1, partition; 11, through hole; 2, tray; 21, bracket; 22, torsion spring; 23, limit frame; 24, limit groove; 241, first limit surface; 242, second limit surface; 3, handle; 31, straight rod; 32, handle; 33, spherical ball; 34, limit pin; 35, cylindrical pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following describes the implementation modes of the present utility model through specific examples. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation modes. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0021] It should be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present utility model in a schematic manner. Therefore, only the components related to the present utility model are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0022] In the embodiments of the present utility model, all directional indications (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship and movement conditions between components in a specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0023] Due to reasons such as installation errors, the parallel relationship referred to in the embodiments of the present utility model may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0024] The present utility model provides a self-resetting locking device, which is arranged in a switch cabinet and is used for the safe entry and exit of the handcart in the circuit breaker chamber.

[0025] Refer to Figure 1 As shown, a partition 1 is arranged in the circuit breaker chamber. The partition 1 is fixedly connected to the circuit breaker chamber. The handcart is supported by a support plate 2 during entry and exit. The support plate 2 is arranged on a transfer trolley. The movable transfer trolley drives the support plate 2 to abut against the outside of the partition 1, so that the surface of the support plate 2 is flush with the surface of the partition 1. The handcart can freely move on the partition 1 and the support plate 2 to realize the entry and exit actions of the handcart into the circuit breaker chamber.

[0026] Furthermore, in order to ensure the stability between the partition 1 and the support plate 2 when the handcart enters and exits, the locking device is used to fix the support plate 2 and the partition 1 and keep the surfaces of the two flush.

[0027] Specifically, refer to Figure 2 、 Figure 3 and Figure 4, the locking device further includes a handle 3 and a bracket 21. The handle 3 includes a straight rod 31 having a linear columnar structure, and a handle 32 bent at one end of the straight rod 31. A spherical ball 33 is provided at the end of the handle 32 to increase operability. The bracket 21 is fixedly arranged at the bottom of the pallet 2. The straight rod 31 passes through the bracket 21, and the straight rod 31 can rotate relative to the bracket 21 with its own axis as the rotation center, and can also move along its own axis.

[0028] Referring to Figure 5 and Figure 6 , when the pallet 2 is abutted against the partition 1, the other end of the straight rod 31 is arranged in the direction towards the partition 1. A through hole 11 is formed on the partition 1. When the pallet 2 abuts against the partition 1, the straight rod 31 passes through the through hole 11.

[0029] A cylindrical pin 35 is also fixedly arranged at the end of the other end of the straight rod 31. The cylindrical pin 35 is arranged in the radial direction of the straight rod 31, so as to be perpendicular to the axial direction of the straight rod 31. After the straight rod 31 passes through the through hole 11, by driving the straight rod 31 to rotate through the handle 32, the angle of the straight rod 31 can be switched between the locked position and the unlocked position. In the unlocked position, the straight rod 31 can freely penetrate into and out of the through hole 11 along its own axis. In the locked position, the cylindrical pin 35 abuts against the side wall of the partition 1 corresponding to the position of the through hole 11, thereby restricting the axial movement of the straight rod 31. In this embodiment, preferably, the angle difference between the straight rod 31 in the locked position and the unlocked position is ninety degrees.

[0030] Specifically, the through hole 11 has a rectangular structure and has a length direction. In the unlocked position, the axis of the cylindrical pin 35 is parallel to the length direction, and at this time the cylindrical pin 35 can pass through the through hole 11, so that the straight rod 31 can move axially; in the locked position, the axis of the cylindrical pin 35 is perpendicular to the length direction, and at this time the cylindrical pin 35 cannot pass through the through hole 11, so that it will abut against the side wall of the partition 1.

[0031] The number of the cylindrical pins 35 can be set to one. After the cylindrical pin 35 passes through the through hole 11 in the unlocked position and is switched to the locked position, the cylindrical pin 35 abuts against the inner side wall of the through hole 11, restricting the extraction of the straight rod 31.

[0032] Alternatively, in another embodiment, the number of the cylindrical pins 35 is set to two. The two cylindrical pins 35 are parallel to each other and form a set spacing, and the spacing is greater than the thickness of the upper side wall of the partition plate 1 where the through hole 11 is located. Furthermore, in the unlocking position, by passing the cylindrical pin 35 at the front end of the straight rod 31 through the through hole 11, the two cylindrical pins 35 are respectively located on both sides of the through hole 11. At this time, the straight rod 31 is switched to the locking position, so that the two cylindrical pins 35 can respectively abut against the side walls on both sides of the through hole 11, thereby completely restricting the movement of the straight rod 31 in two axial directions.

[0033] When the transfer cart moves the pallet 2 to a position where it abuts against the partition plate 1, by operating the handle 3, the straight rod 31 is switched to the locking position. After the through hole 11 restricts the axial movement of the straight rod 31, the fixed connection between the pallet 2 and the partition plate 1 can be achieved through the handle 3, ensuring the stability of the positional relationship between the pallet 2 and the partition plate 1. The abutting relationship between the straight rod 31, the cylindrical pin 35 and the through hole 11 enables the straight rod 31 and the partition plate 1 to be components that bear the impact force. Only by ensuring the corresponding strength can they effectively bear the impact. Moreover, the design of the through hole 11 enables the straight rod 31 to still ensure the unlocking and locking actions of the straight rod 31 within a certain deformation range.

[0034] In order to enable the user to more clearly define the rotation position of the handle 3 when operating it and more clearly know whether it is in the unlocking position or the locking position, the locking device further includes a limit frame 23. The limit frame 23 is fixedly arranged on the pallet 2. A limit groove 24 is formed on the limit frame 23. A first limit surface 241 and a second limit surface 242 are formed on the inner wall of the limit groove 24. A fixed limit pin 34 is passed through the straight rod 31. When the straight rod 31 is switched from the locking position to the unlocking position, the limit pin 34 abuts against the first limit surface 241, restricting the further rotation of the straight rod 31. When the straight rod 31 is switched from the unlocking position to the locking position, the limit pin 34 abuts against the second limit surface 242, restricting the further rotation of the straight rod 31. Thus, the rotation range of the straight rod 31 is maintained between the unlocking position and the locking position through the two limit surfaces.

[0035] A torsion spring 22 is further provided on the bracket 21. The torsion spring 22 is sleeved on the outer periphery of the straight rod 31. Two ends of the torsion spring 22 are respectively connected to the straight rod 31 and the bracket 21, so as to provide torsion force in the rotation direction for the straight rod 31. When there is no other external force, the torsion spring 22 maintains the straight rod 31 in the locked position to ensure the stability of the straight rod 31 in the locked position and prevent it from rotating easily. When the straight rod 31 is switched from the locked position to the unlocked position, the torsion spring 22 accumulates torsion force to provide torsion force for the straight rod 31 to reset to the locked position.

[0036] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

Claims

1. An automatically reset locking device, characterized in that, It is arranged on the partition board (1) and the supporting board (2) of the switch cabinet. The partition board (1) abuts against the supporting board (2). The locking device includes a handle (3) and a bracket (21). The bracket (21) is fixedly connected to the bottom of the supporting board (2). The handle (3) includes a straight rod (31) passing through the bracket (21). The straight rod (31) can rotate around its own axis and move axially relative to the bracket (21). A through hole (11) for the axial passing of one end of the straight rod (31) is formed on the partition board (1). A cylindrical pin (35) is fixedly arranged on the straight rod (31) to abut against the side wall of the through hole (11) in the axial direction of the straight rod (31).

2. The automatic reset locking device according to claim 1, characterized in that, The through hole (11) is of a rectangular structure, and the cylindrical pin (35) is arranged along the radial direction of the straight rod (31).

3. An automatic reset locking device according to claim 1 or 2, characterized in that, The number of the cylindrical pins (35) is set to two. The two cylindrical pins (35) are arranged in parallel and form a set spacing, and the set spacing is greater than the thickness of the through hole (11).

4. An automatic reset locking device according to claim 1, characterized in that, It further includes a limit frame (23). The limit frame (23) is fixedly connected to the supporting board (2). A limit groove (24) for the straight rod (31) to pass through is arranged on the limit frame (23). A limit pin (34) is arranged on the straight rod (31). First limit surfaces (241) and second limit surfaces (242) for respectively abutting against the limit pin (34) are formed on the inner wall of the limit groove (24).

5. An automatic reset locking device according to claim 1, characterized in that, A torsion spring (22) is arranged on the bracket (21). Two ends of the torsion spring (22) are respectively connected to the bracket (21) and the straight rod (31).

6. An automatic reset locking device according to claim 1, characterized in that, One end of the straight rod (31) is bent to form a handle (32), and a spherical ball (33) is arranged at the end of the handle (32).

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