Locking structure for preventing switch cabinet door from being stuck

Abstract

The utility model discloses a locking structure for preventing a switch cabinet door from being stuck, which comprises a cabinet door and a cabinet body, the locking structure comprises a door lock and a connecting rod, the door lock drives the connecting rod to move up and down along the vertical direction through a door lock inserting plate, the inner side of a cabinet door panel is fixedly connected with a guide bracket, and the section of the guide bracket is in a U shape. A plurality of sets of guide holes are symmetrically formed in the two sides of the guide support, pin shafts which are the same as the guide holes in number and can move up and down in the guide holes are fixedly connected to the connecting rod, the pin shafts are matched with the guide holes and sequentially penetrate through the guide holes in the two sides of the guide support, and a plurality of lock hooks are arranged on the side, facing the cabinet door, of the cabinet body. A U-shaped groove with a downward opening is formed in the bottom of the lock hook, the lock hook corresponds to the pin shaft in position, and a rolling wheel is arranged at the vertex angle of the side, facing the cabinet door, of the cabinet body. By changing the opening direction of the lock hook, it is guaranteed that the cabinet door cannot be stuck even if the pin shaft falls off, meanwhile, the cabinet door is prevented from drooping through the idler wheels, and practicability and safety are high.

Description

Technical Field

[0001] The utility model relates to the technical field of switch cabinets, and particularly relates to a locking structure for preventing the switch cabinet door from being jammed. Background Art

[0002] To ensure the safe operation of electrical switch cabinets, door locks are usually installed on the cabinet doors of the switch cabinets. The cabinet doors are locked with the cabinet body through the door locks to improve the safety of the switch cabinets.

[0003] In the prior art, a connecting rod lock is adopted to ensure the safety of the switch cabinet. For example, the published Chinese utility model patent: A front door locking mechanism for a medium-voltage switch cabinet, with the application number: 201320868559.7. This technical solution uses a lock hook with an upward vertical opening direction, and the lock pin falls into the opening of the lock hook to form a locked state. However, during actual transportation, the lock pin installed on the connecting rod slide is likely to become loose and fall off. After falling off, the lock pin will be jammed in the lock hook, resulting in the problem that the cabinet door cannot be opened.

[0004] At the same time, due to the large size of the switch cabinet and the heavy mass of the cabinet door, during transportation, the cabinet door will sag to a certain extent, causing the cabinet door to deform and affecting the opening and closing of the cabinet door.

[0005] Therefore, it is necessary to provide a locking structure for preventing the switch cabinet door from being jammed to solve the above technical problems.

[0006] At the same time, the "door lock" described in the claims of this application is the published Chinese utility model patent: Padlock handle connecting rod lock, with the application number: 201620049531.4. Therefore, the door lock structure will not be elaborated too much. Summary of the Utility Model

[0007] The purpose of the utility model is to provide a locking structure for preventing the switch cabinet door from being jammed in view of the deficiencies of the prior art. By changing the opening direction of the lock hook, it is ensured that even if the pin shaft falls off, the cabinet door will not be jammed. At the same time, rollers are used to prevent the cabinet door from sagging, which has strong practicability and high safety.

[0008] To achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A locking structure for preventing the switch cabinet door from jamming, comprising a cabinet door and a cabinet body. The locking structure includes a door lock disposed outside the cabinet door panel and a connecting rod disposed inside the cabinet door panel. The door lock drives the connecting rod to move vertically up and down through a door lock plug. A guiding bracket is fixedly connected along the length direction of the cabinet door on the inner side of the cabinet door panel. The length of the guiding bracket is adapted to the cabinet door. The cross-section of the guiding bracket is in a U shape. A plurality of groups of guiding holes are symmetrically formed on both sides of the guiding bracket. A pin shaft is provided on the connecting rod, and the number of pin shafts is the same as the number of groups of guiding holes and can move up and down in the guiding holes. The pin shaft is adapted to the guiding holes and sequentially passes through the guiding holes on both sides of the guiding bracket. A plurality of locking hooks are provided on one side of the cabinet body facing the cabinet door. A U-shaped groove with an opening downward is provided at the bottom of the locking hook. The position of the locking hook corresponds to the pin shaft. A roller is provided at the top corner of one side of the cabinet body facing the cabinet door. The roller can rotate around its own axis. When the cabinet door is in the locked state, the connecting rod drives the pin shaft to move upward and places the pin shaft in the U-shaped groove of the corresponding locking hook. The roller abuts against the inner side of the top fold of the cabinet door. When the cabinet door is in the open state, the connecting rod drives the pin shaft to move downward, and the pin shaft disengages from the U-shaped groove of the locking hook.

[0010] Preferably, the roller is fixedly connected to the cabinet body through a roller bracket.

[0011] Preferably, the roller is a nylon roller.

[0012] Preferably, the cabinet door is hinged to the cabinet body through a hinge.

[0013] Preferably, the guiding holes are kidney-shaped holes.

[0014] Compared with the prior art, the present utility model has the following advantages:

[0015] 1. The opening of the U-shaped groove of the locking hook is set downward. The connecting rod drives a plurality of pin shafts to move upward, so that the pin shafts are respectively placed in the U-shaped grooves of their corresponding locking hooks. Even if the pin shafts fall off the connecting rod during transportation, the pin shafts will not be jammed in the U-shaped grooves, resulting in the inability to open the cabinet door.

[0016] 2. By the nylon roller abutting against the top fold of the cabinet door, it is ensured that the cabinet door will not sag during the transportation of the switch cabinet, and at the same time, the nylon roller will not damage the cabinet door of the switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure inside the cabinet door panel;

[0018] Figure 2 It is a schematic diagram of the structure outside the cabinet door panel;

[0019] Figure 3 It is a front view of the cabinet body facing the cabinet door;

[0020] Figure 4 It is a side view of the pin shaft placed in the guiding hole;

[0021] Figure 5 It is a structural schematic diagram of the connecting rod, the door lock plug board and the guiding bracket;

[0022] Figure 6 It is a schematic diagram of the roller tightly contacting the top hem of the cabinet door;

[0023] Figure 7 It is a side view of the lock hook;

[0024] Wherein, 1 - cabinet door, 2 - cabinet body, 3 - door lock, 4 - connecting rod, 5 - door lock plug board, 6 - guiding bracket, 7 - guiding hole, 8 - pin shaft, 9 - lock hook, 10 - roller, 11 - roller bracket, 12 - top hem of the cabinet door Specific embodiments

[0025] The following further clarifies the present invention in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, those skilled in the art's various equivalent modifications of the present invention all fall within the scope defined by the appended claims of this application.

[0026] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixed connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] In the present invention, terms such as "upper", "lower", "bottom", "top", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only relational terms determined for the convenience of describing the structural relationship of each component or element of the present invention, and do not specifically refer to any component or element in the present invention, and should not be construed as a limitation to the present invention.

[0028] Such as Figures 1 to 7As shown in the figure, a locking structure for preventing the switch cabinet door from being jammed includes a cabinet door 1 and a cabinet body 2. The cabinet door is hinged to the cabinet body through a hinge. The locking structure includes a door lock 3 installed on the outer side of the cabinet door panel and a connecting rod 4 installed on the inner side of the cabinet door panel. By rotating the handle of the door lock, the door lock structure drives the door lock plug 5 to move up and down, and the door lock plug then drives the connecting rod to move up and down in the vertical direction. A guiding bracket 6 is welded and fixed along the length direction of the cabinet door on the inner side of the cabinet door panel. The length of the guiding bracket is adapted to the cabinet door. The cross-section of the guiding bracket is in a U shape. Five groups of guiding holes 7 are symmetrically arranged on both sides of the guiding bracket. The guiding holes are waist-shaped holes. Pin shafts 8 with the same number as the number of groups of guiding holes and capable of moving up and down in the guiding holes are installed on the connecting rod. The pin shafts are adapted to the guiding holes and sequentially pass through the guiding holes on both sides of the guiding bracket. Five locking hooks 9 are installed on the side of the cabinet body facing the cabinet door. The bottom of the locking hook is provided with a U-shaped groove opening downward. The position of each locking hook corresponds to a pin shaft. A roller 10 made of nylon is installed at the top corner of the side of the cabinet body facing the cabinet door. The roller is fixed to the cabinet body through a roller bracket 11. The roller can rotate around its own axis. When the cabinet door is in the locked state, the connecting rod drives the pin shaft to move upward and places the pin shaft in the U-shaped groove of the corresponding locking hook. The roller abuts against the inner side of the top fold 12 of the cabinet door. When the cabinet door is in the open state, the connecting rod drives the pin shaft to move downward, and the pin shaft disengages from the U-shaped groove of the locking hook.

[0029] Principle and usage method of a locking structure for preventing the switch cabinet door from being jammed: When preparing to transport the switch cabinet, close the cabinet door. The cabinet door and the cabinet body are closed. At this time, the inner side of the top fold of the cabinet door abuts against the roller. The inner side of the top fold of the cabinet door is always supported by the roller, so that the cabinet door will not sag during transportation. At the same time, since the roller is made of nylon, it will not cause damage to the cabinet door during the support process. Subsequently, rotate the handle of the door lock. By rotating the handle, the door lock plug moves upward, and the door lock plug then drives the connecting rod to move upward. The five pin shafts on the connecting rod move upward in the vertical direction along with the connecting rod until each pin shaft is placed in the U-shaped groove of the locking hook. At this time, the cabinet door is completely locked and closed through multiple locking points. If the pin shaft falls off due to vibration during transportation, the pin shaft will directly fall from the U-shaped groove of the locking hook and will not be jammed in the U-shaped groove of the locking hook. When it is necessary to open the cabinet door after the transportation is completed, rotate the handle of the door lock to make the pin shaft move downward in the vertical direction and disengage from the U-shaped groove of the locking hook, and then the cabinet door can be opened.

[0030] The above description shows and describes the preferred embodiments of the present utility model. As mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in related fields. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A locking structure for preventing the switch cabinet door from jamming, comprising a cabinet door and a cabinet body, characterized in that: The locking structure includes a door lock disposed on the outer side of the cabinet door panel and a connecting rod disposed on the inner side of the cabinet door panel. The door lock drives the connecting rod to move up and down in the vertical direction through a door lock plug. A guiding bracket is fixedly connected along the length direction of the cabinet door on the inner side of the cabinet door panel. The length of the guiding bracket is adapted to the cabinet door. The cross-section of the guiding bracket is in a U shape. A plurality of groups of guiding holes are symmetrically formed on both sides of the guiding bracket. The connecting rod is provided with a plurality of pin shafts that are the same in number as the groups of guiding holes and can move up and down in the guiding holes. The pin shafts are adapted to the guiding holes and sequentially pass through the guiding holes on both sides of the guiding bracket. A plurality of locking hooks are provided on the side of the cabinet body facing the cabinet door. The bottom of the locking hook is provided with a U-shaped groove opening downward. The position of the locking hook corresponds to that of the pin shaft. A roller is provided at the top corner of the side of the cabinet body facing the cabinet door. The roller can rotate around its own axis. When the cabinet door is in the locked state, the connecting rod drives the pin shaft to move upward and places the pin shaft in the U-shaped groove of the corresponding locking hook. The roller abuts against the inner side of the top fold of the cabinet door. When the cabinet door is in the open state, the connecting rod drives the pin shaft to move downward, and the pin shaft disengages from the U-shaped groove of the locking hook.

2. The locking structure for preventing the switch cabinet door from jamming according to claim 1, characterized in that: The roller is fixedly connected to the cabinet body through a roller bracket.

3. The locking structure for preventing the switch cabinet door from jamming according to claim 1, characterized in that: The roller is a nylon roller.

4. A locking structure for preventing the switch cabinet door from being jammed, as claimed in claim 1, wherein: The cabinet door is hinged to the cabinet body through a hinge.

5. A locking structure for preventing the switch cabinet door from being jammed, as claimed in claim 1, wherein: The guiding holes are kidney-shaped holes.

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