A mechanism for linking the open state of an equipment holding device with an electrical switch.

Abstract

This utility model discloses a mechanism for linking the open state of an equipment holding device with an electrical switch, relating to the fields of electrical and electromechanical technology. It includes: a switch shaft rotatably mounted on the side wall of a box, cabinet, or shell; a locking hook disposed inside the box, cabinet, or shell, one end of which is fixed to the inner end of the switch shaft; a hook head mounted on the other end of the hook head via a hook head pivot, allowing the hook head to rotate around the pivot at a limited angle; a spring installed between the hook head and the locking hook; a locking pin fixed to the inside of the door or cover of the box, cabinet, or shell, its rotation axis being parallel or perpendicular to the hook head's rotation axis; and a switch block fixed to the hook head, controlling the electrical switch to be turned on or off during the hook's rotation. With this utility model, after the switch shaft is rotated to the locked position, the hook head can rotate, preventing obstruction of closing the door or cover, avoiding damage to parts due to improper use, and preventing the failure of the linkage between the open state of the box, cabinet, or shell and the electrical switch.

Description

Technical Field

[0001] This utility model relates to the fields of electrical and electromechanical technology, and in particular to a mechanism that links the open state of an equipment holding device with an electrical switch. Background Technology

[0002] Electrical or electromechanical equipment typically requires protection and is therefore housed in enclosures such as boxes, cabinets, and shells. Because regular inspection, maintenance, and repair are necessary, these enclosures typically have doors or lids that can be opened to provide access for observation, maintenance, and repair. For safety, some equipment requires the power supply to be disconnected from all or part of the internal circuitry when the door or lid is opened; others require the lighting circuit to be switched on when the door or lid is opened for observation. In summary, the opening status of the equipment enclosure needs to be linked to an electrical switch.

[0003] Existing solutions mostly use rotatable mechanical parts (referred to as hooks) installed on boxes, cabinets, and shells to hook onto fixed mechanical parts (referred to as pins) on doors or covers, linking the hooks with electrical switches, and using the hooks to control the on or off of the electrical switches.

[0004] During maintenance or inspection, it may be necessary to change the state of the linked electrical switch, that is, to change the position of the locking hook. If the position of the locking hook is not adjusted to the open state when the door or cover of the equipment is closed, the locking hook or pin may be damaged, causing the linkage between the open state of the box, cabinet, or shell and the electrical switch to fail. Utility Model Content

[0005] In view of the defects of the existing technology, the present invention provides a mechanism that links the open state of the equipment holding device with the electrical switch, thereby solving the existing problems.

[0006] The present invention adopts the following technical solution:

[0007] This utility model provides a mechanism for linking the open state of an equipment holding device with an electrical switch. The equipment holding device is a box, container, cabinet, or shell, and an electrical switch is installed inside it. The mechanism for linking the open state of the equipment holding device with the electrical switch includes at least:

[0008] The switch shaft is rotatably mounted on the side wall of the box, cabinet, and shell, with its inner end extending into the interior of the box, cabinet, and shell, and its outer end extending into the exterior of the box, cabinet, and shell.

[0009] Locking hooks are installed inside boxes, cabinets, and shells, with one end fixed to the inner end of the switch shaft;

[0010] The hook head is mounted on the other end of the lock hook via a hook head pivot, and the hook head can rotate around the hook head pivot at a limited angle.

[0011] A spring is installed between the lock hook and the hook head. When the lock hook and the hook head rotate relative to each other, the spring generates or releases elastic force.

[0012] Locking pins are fixed to the inside of the doors or lids of boxes, cabinets, and shells, and their axis of rotation is parallel or perpendicular to the axis of rotation of the hook head.

[0013] The switch block is fixed on the lock hook and controls the electrical switch to be turned on or off during the rotation of the lock hook.

[0014] Preferably, the switch shaft is a key switch, which is turned with a matching key. A locking hook is fixed on its rotating body. The key switch itself has a contact switch, which can replace the electrical switch or be connected in series with the electrical switch.

[0015] Preferably, the hook head is block-shaped with a hole at one end. The hook head pivot passes through the hole and rotates around the axis of the hole. The side that contacts the lock hook has a fan-shaped groove, and the side of the lock hook that contacts the hook head has a boss located in the fan-shaped groove of the hook head. The spring is located in the fan-shaped groove.

[0016] Preferably, the spring is a torsion spring, which is sleeved on the hook head shaft, with one torsion arm engaged in the wall of the fan-shaped groove and the other torsion arm engaged in the side of the boss.

[0017] Preferably, the hook head is block-shaped with a hole at one end. The hook head pivot passes through the hole and rotates around the axis of the hole. The side that is in contact with the lock hook has a boss, and the side of the lock hook that is in contact with the hook head has a fan-shaped groove. The boss is located in the fan-shaped groove, and the spring is located in the fan-shaped groove.

[0018] Preferably, the end of the hook head away from the hole is an arc surface, and the axis of the arc surface is the axis of the hole where the hook head shaft is installed.

[0019] Compared with the prior art, the above-mentioned at least one technical solution adopted by this utility model can achieve the following:

[0020] Beneficial effects:

[0021] This invention features a hook head at the end of the locking hook that can rotate at a limited angle. This hook head limits the locking pin on the inside of the door or cover of a box, cabinet, or shell. This structure ensures that the door or cover of the box, cabinet, or shell cannot be opened arbitrarily after being closed and locked by the hook head. The door or cover can only be opened after the switch shaft is rotated from the locked position to the free position. During the rotation of the switch shaft, the electrical switch installed inside the box, cabinet, or shell is controlled to open or close according to regulations. Even if the locking hook is not aligned with the open position after the switch shaft is rotated to the locked position, the rotatable hook head will not obstruct the closing of the door or cover, preventing damage to parts due to improper use and avoiding the problem of the open state of the box, cabinet, or shell failing to link with the electrical switch. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram showing the installation position of the equipment holding device and the separate electrical switch of this utility model; wherein, when the switch shaft is in the locked position, the electrical switch is in the on state;

[0024] Figure 2 A schematic diagram showing the position of the external switch shaft of the equipment holding device;

[0025] in, Figure 2 (a): Schematic diagram of the locking position switch shaft position; Figure 2 (b): Schematic diagram of the free position switch shaft position;

[0026] Figure 3 This is a schematic diagram showing the electrical switch in the open state when the switch shaft of this utility model is in the free position;

[0027] Figure 4 A schematic diagram showing the installation location of another equipment holding device linked to a separate electrical switch;

[0028] in, Figure 4 (a): Schematic diagram of the electrical switch in the open state when the switch shaft of this utility model is in the locked position; Figure 4 (b): Schematic diagram of the electrical switch on state when the switch shaft of this utility model is in the free position;

[0029] Figure 5The diagram shows two forms of the switch shaft of this utility model;

[0030] in, Figure 5 (a): A schematic diagram showing a lever mechanism at the end of the switch shaft, which is locked in the locked position using a padlock. Figure 5 (b): Schematic diagram of the position of the key switch shaft;

[0031] Figure 6 This is a schematic diagram of the present invention when the equipment holding device and the integrated electrical switch linkage shaft are in the locked position;

[0032] Figure 7 This is a schematic diagram of the present invention when the equipment holding device and the integrated electrical switch linkage shaft are in a free position;

[0033] Figure 8 This is an exploded view of the first type of hook installation position of this utility model;

[0034] in, Figure 8 (a): The first type of hook. Figure 8 (b): Schematic diagram of the installation of the first type of hook;

[0035] Figure 9 This is an exploded view of the second hook installation position of this utility model;

[0036] in, Figure 9 (a): The second type of hook. Figure 9 (b): Schematic diagram of the installation of the second type of hook;

[0037] Figure 10 This is a schematic diagram of the hook head corner position of this utility model;

[0038] in, Figure 10 (a): Schematic diagram of the position where the locking pin is pressed down and the hook head begins to rotate. Figure 10 (b): Schematic diagram of the locking pin disengaging from the hook and resetting to its initial position. Figure 10 (c): Schematic diagram of the final position of the hook head after rotation and reset;

[0039] In the diagram: 1-1-Switch shaft, 1-2-Locking hook, 1-3-Hook head, 1-4-Spring, 1-5-Electrical switch, 1-6-Hook head rotating shaft, 1-7-Hook head fastener, 1-8-Electrical switch fastener, 1-9-Locking hook fastener, 1-10-Switch block, 1-11-Fan-shaped groove, 1-12-Boss, 1-13-Static contact, 1-14-Moving contact, 2-1-Locking pin, 2-2-Locking pin fastener, 4-1-Upper locking buckle, 4-2-Upper locking buckle fixing shaft, 5-1-Machine cover, 5-2-Machine housing. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] Reference Figure 1 This utility model provides a mechanism for linking the open state of a device holding device with an electrical switch, specifically relating to a mechanism for linking the open state of a box, cabinet, or shell with a separate electrical switch, used to disconnect the electrical switch when the box, cabinet, or shell is open. The opening power-off device includes a switch shaft 1-1, a locking hook 1-2, and a hook head 1-3. The switch shaft 1-1 can rotate at a certain angle and passes through the housing 5-2 and the locking hook 1-2 from the outside to the inside, and is then fastened with a locking hook fastener 1-9 to fix the locking hook to the switch shaft. At this time, the locking hook 1-2 can swing at a certain angle following the rotation of the switch shaft 1-1. The hook head 1-3 is rotatably mounted on one side of the top of the locking hook 1-2 via a movable component. A switch block 1-10 is fixedly mounted on the locking hook 1-2. A moving contact 1-14 is fixed on the switch block. When the moving contact 1-14 and the stationary contact 1-13 contact, the safety switch closes. Rotating the switch shaft 1-1 in a certain direction can disconnect the normally connected moving and stationary contacts, thereby achieving the purpose of power-off. Only after the power is off can the cover be opened for operation, effectively protecting personnel safety. Based on this function, considering the possibility of abnormal operating procedures, such as maintenance personnel turning the switch shaft 1-1 to the locked position before closing the cover 5-1 after maintenance, a function to prevent damage to the opening power-off mechanism during the closing action has been added. This utility model's mechanism for linking the open state of an equipment holding device with an electrical switch includes an opening power-off device and a cover 5-1 locking pin module. An electrical switch is installed inside the equipment holding device. This electrical switch is normally on; it must be disconnected after the equipment holding device is opened, or it is normally off; it must be turned on after the equipment holding device is opened.

[0042] Furthermore, the locking pin module of the cover 5-1 consists of locking pin 2-1 and locking pin fastener 2-2. The locking pin cooperates with the hook to control whether the cover 5-1 can be opened. Locking pin 2-1 is installed through the side wall of the cover 5-1 of the equipment holding device, extending from the outside to the inside of the cover 5-1, and is locked and fixed to the side wall of the cover 5-1 by locking pin fastener 2-2. After the cover is closed, the hook 1-3 of the cover opening and power-off device hooks the part of locking pin 2-1 inside the cover 5-1, at which time the cover 5-1 will be restricted from opening. The opening and closing process of the cover 5-1 has no risk of movement interference with other components except for interference with the hook 1-3 of the cover opening and power-off device; it can be ensured that the cover 5-1 can only be opened smoothly when the cover 5-1 is closed, by first rotating the switch shaft 1-1 by a certain angle to disengage the hook 1-3 from the pin shaft 2-1.

[0043] Reference Figure 2 The end of the switch shaft 1-1 exposed outside the equipment holding device has a lever and a limiting structure. The locking buckle 4-1 is installed on the side wall of the equipment holding device housing via the locking buckle fixing shaft. The locking buckle 4-1 can rotate a certain angle, without restriction on whether it rotates with or around the shaft. When the switch shaft 1-1 is in the locked position, rotating the locking buckle 4-1 presses against the lever structure of the switch shaft 1-1 and locks the lever structure connecting the locking buckle 4-1 and the lever structure of the switch shaft 1-1, thus locking the switch shaft 1-1 in the locked position and preventing its position from changing. To open and remove the lock, rotating the locking buckle 4-1 away from the lever structure of the switch shaft 1-1 allows the switch shaft 1-1 to be moved to the free position.

[0044] Reference Figure 3 Hook 1-3 is rotatably mounted on one side of the top of locking hook 1-2 via a movable component. When the switch shaft is in the free position, the electrical switch is off, and hook 1-3 rotates with locking hook 1-2 to a position that does not restrict the movement of the locking pin. The opening or closing of the cover 5-1 is not affected by the hook. When the switch shaft rotates to the locked position, the electrical switch is on, and hook 1-3 rotates with locking hook 1-2 to a position that restricts the movement of the locking pin. The locking pin is blocked by the hook, and the cover 5-1 cannot be opened.

[0045] Furthermore, such as Figure 4 As shown, this utility model presents another installation position for the linkage between the equipment holding device and the separate electrical switch. The switch block 1-10 can be installed at different positions of the locking hook 1-2, rotating with the switch shaft 1-1 to connect or disconnect with the stationary contact, controlling the on / off state of the internal circuit. When the switch shaft is in the locked position, the electrical switch is off, and the hook head restricts the movement of the locking pin. When the switch shaft is in the free position, the electrical switch is on, and the hook head does not restrict the movement of the locking pin.

[0046] Furthermore, such as Figure 5 (a) has a lever mechanism at the end of the switch shaft, which is locked in the locked position using a padlock. Figure 5As shown in (b), the switch shaft 1-1 is a key switch, which is turned by a matching key. The rotating body has a fixed hook 1-2. Furthermore, the key switch itself has a contact switch, which can replace the electrical switch or be connected in series with the electrical switch.

[0047] Furthermore, such as Figure 6 and Figure 7 As shown, the split-type electrical switch is replaced with an integrated electrical switch 1-5 with contact action. The switch block 1-10 controls the movement of the contacts during the movement of the switch shaft or locking hook, thus opening or closing the integrated electrical switch 1-5. Figure 6 When the hook head restricts the movement of the pin, the switch block actuates the contact. Figure 7 The switch block releases the contact when the hook does not restrict the movement of the pin; further, the relationship between the release or activation of the contact by the switch block and whether the hook restricts the movement of the pin can be discussed with... Figure 6 Figure 7 Conversely, as shown; furthermore, an integrated electrical switch can be normally open or normally closed; furthermore, an integrated electrical switch can have both normally open and normally closed contacts simultaneously.

[0048] This utility model is not limited to the linkage between the on / off state of the electrical switch and the open state of the equipment holding device. The integrated contact can be either a normally open contact or a normally closed contact to meet the circuit on / off control requirements. Ultimately, the open state of the equipment holding device is associated with the on or off state of the electrical switch.

[0049] Furthermore, Figure 8As shown, hook head 1-3 and locking hook 1-2 are connected by spring 1-4, hook head pivot 1-6, and hook head fastener 1-7 to form a rotatable structure. Hook head pivot 1-6 passes through locking hook 1-2 and hook head 1-3, and the two are fixed by hook head fastener 1-7. Spring 1-4 is provided between hook head 1-3 and locking hook 1-2. Hook head 1-2 has a fan-shaped groove 1-11, and spring 1-4 is installed in the fan-shaped groove 1-11. Lock hook 1-2 has a boss 1-12. One arm of the spring is engaged with the boss 1-12, and the other arm is engaged with the edge of the fan-shaped groove 1-11. This allows hook head 1-3 to have a certain rotation angle. When hook head 1-3 is not subjected to external force, the torque generated by the torsion spring causes hook head 1-3 to rotate until the wall of the fan-shaped groove 1-11 is in close contact with the boss 1-12 of locking hook 1-2. When the door or cover of the box, cabinet, or shell is closed, and the switch shaft 1-1 is in the locked position, directly opening the door or cover causes the pin to push the hook head in the direction of rotation, making the wall of the fan-shaped groove 1-11 continuously press against the boss 1-12 of the locking hook. The hook head is mechanically blocked and cannot rotate, so the door or cover of the box, cabinet, or shell cannot be opened. When the door or cover of the box, cabinet, or shell is opened, and the switch shaft is in the locked position, closing the door or cover causes the pin to push the hook head in the direction of rotation, making the wall of the fan-shaped groove 1-11 continuously move away from the boss 1-12 of the locking hook. The hook head rotates and twists the torsion spring until the pin and the hook head disengage. Under the torque of the torsion spring, the hook head rotates until the wall of the fan-shaped groove 1-11 is pressed against the boss 1-12 of the locking hook.

[0050] Furthermore, refer to Figure 9 Springs 1-4 are torsion springs, which are sleeved on the hook head pivot 1-6. One torsion arm is engaged with the wall of the fan-shaped groove 1-11 of the hook head, and the other torsion arm is engaged with the side of the boss 1-12 of the locking hook. (Refer to...) Figure 9 The hook head 1-3 is block-shaped with a hole at one end. The hook head pivot 1-6 passes through the hole and rotates around the axis of the hole. There is a boss 1-12 on the side that is in contact with the lock hook 1-2. There is a fan-shaped groove 1-11 on the side that is in contact with the hook head 1-3. The boss 1-12 is located in the fan-shaped groove 1-11. The spring 1-4 is located in the fan-shaped groove 1-11.

[0051] Furthermore, the electrical switch consists of a stationary contact and an independent moving contact, forming a separate structure. When the moving contact moves to the appropriate position, the electrical switch is turned on, and when it moves to the appropriate position, the electrical switch is turned off. The switch block 1-10 controls the electrical switch to be turned on or off as it rotates with the locking hook 1-2. The moving contact of the electrical switch is fixed on the switch block 1-10 and moves with the switch block 1-10 to turn the electrical switch on or off.

[0052] Furthermore, the electrical switch is an integrated structure containing a stationary contact and a moving contact. The mechanism that controls the movement of the moving contact extends out of the electrical switch and controls the position of the contact to connect or disconnect the electrical switch. As the switch block rotates with the locking hook 1-2, the switch block touches or releases the contact to generate a certain stroke, thereby controlling the electrical switch to connect or disconnect.

[0053] This invention is not limited to the rotation angle shown; the initial position and rotatable angle can be set at any angle according to actual needs.

[0054] Furthermore, Figure 10 This is a schematic diagram of the hook head's anti-accidental closing function. The radius of the locking pin 2-1 is R1, the radius of the arc at the upper end of the locking hook 1-2 is R2, and the radius of movement of the locking pin 2-1 when the cover 5-1 is closed is R3. The relationship between R1, R2 and R3 is: R3 = R2 + R1 + reserved movement gap Y (Y>0mm).

[0055] Hook 1-3 is connected to locking hook 1-2 via hook shaft 1-6 as its rotation axis and fasteners. An internal spring allows it to swing at a certain angle. When the switch shaft is in the locked position, the position of hook 1-3 interferes with the locking pin 2-1 during the lid closing action. To prevent the locking pin from damaging the hook during lid closing in this situation, an anti-accidental lid closing function is added to the hook to avoid damage to the lid opening and power-off mechanism. During the closing process of the lid 5-1, the locking pin 2-1 on the lid 5-1 can apply pressure to the outer contour surface of hook 1-3 after contacting it. The spring inside hook 1-3 is compressed, and hook 1-3 rotates with the locking pin 2-1. After the hook 1-3 rotates a certain angle, the displacement of locking pin 2-1 exceeds the outer contour length of hook 1-3, and hook 1-3 resets using the spring. Hook 1-3 can smoothly lift up the instant it disengages from the locking pin 2-1 of the lid 5-1, without any dead point. At this time, the lid 5-1 will be restricted and cannot be opened.

[0056] The working principle of this utility model is as follows:

[0057] The rotation of switch shaft 1-1 is restricted, allowing only a certain range of rotation. It is typically in one of two extreme positions; one of these restricted positions is called the locked position. (See...) Figure 2 (a) The other restricted position is called the free position, see (a). Figure 2 (b) When the switch shaft 1-1 is in the locked position, it can be mechanically locked and cannot be rotated at will; it can only be rotated when the mechanical lock is released.

[0058] If the door or cover of the box, cabinet, or shell is closed, after rotating the switch shaft 1-1 from the free position to the locked position, the hook head 1-3 will restrict the pin from moving with the door or cover in the direction of opening, preventing the door or cover from being opened. Only when the lock of the switch shaft 1-1 is released and the switch shaft 1-1 is rotated to the free position will the pin be freed from the restriction of the hook head and can rotate with the door or cover in the direction of opening. Whether the door or cover is closed or not, the switch shaft can rotate freely from the free position to the locked position. If the door or cover is closed, after the switch shaft rotates from the free position to the locked position, the hook head rotates with the switch shaft into the path of the pin as the door or cover opens, blocking the pin from moving in the direction the door or cover opens. If the door or cover is not closed after the switch shaft rotates from the free position to the locked position, and then the door or cover is closed, the hook head is already in the path of the pin as the door or cover closes. However, the spring between the hook head and the lock hook can deform, causing the hook head to rotate under the pressure of the pin until the pin and the hook head disengage. There is no force between them, and since the hook head is no longer compressed by the pin, the spring force drives the hook head back to the limit position, in the path of the pin as the door or cover opens, thus restricting the opening of the door or cover.

[0059] As can be seen, when the door or cover of the equipment holding device is closed, and the pin on it is restricted from moving in the direction of opening the door or cover by the hook, the switch shaft must be rotated to release the restriction of the hook on the pin's movement in the direction of opening the door or cover, so that the door or cover can be opened. The opposite direction is not restricted. In other words, the closing of the door or cover is not restricted by the hook. This realizes the correlation between the open state of the equipment holding device and the position of the switch shaft (hook).

[0060] During the rotation of the switch shaft, the switch block rotates accordingly. The rotation of the switch block changes the on / off state of the electrical switch. As needed, when the switch shaft is in the locked position, the switch block controls the electrical switch to be on; when it is in the free position, the switch block controls the electrical switch to be off. Alternatively, when the switch shaft is in the locked position, the switch block controls the electrical switch to be off; when it is in the free position, the switch block controls the electrical switch to be on. Ultimately, the open state of the equipment's container lid is associated with the on / off state of the electrical switch.

[0061] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0062] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A mechanism for linking the open state of a device holding apparatus with an electrical switch, characterized in that, The equipment holding device is a box, container, cabinet, or shell, and an electrical switch is installed inside it. The mechanism that links the open state of the equipment holding device with the electrical switch includes at least: The switch shaft (1-1) is rotatably mounted on the side wall of the box, cabinet, and shell, with its inner end extending into the interior of the box, cabinet, and shell, and its outer end extending into the exterior of the box, cabinet, and shell. Locking hooks (1-2) are installed inside boxes, cabinets, and shells, with one end fixed to the inner end of the switch shaft (1-1); The hook head (1-3) is mounted on the other end of the lock hook (1-2) via the hook head pivot (1-6), and the hook head (1-3) rotates around the hook head pivot (1-6) at a limited angle; A spring (1-4) is installed between the lock hook (1-2) and the hook head (1-3). When the lock hook (1-2) and the hook head (1-3) rotate relative to each other, the spring (1-4) generates or releases elastic force. Locking pin (2-1) is fixed to the inside of the door or cover of a box, cabinet, or shell, and its axis of rotation is parallel or perpendicular to the axis of rotation of the hook (1-3). The switch block (1-10) is fixed on the lock hook (1-2) and controls the electrical switch to be turned on or off during the rotation of the lock hook (1-2).

2. The mechanism for linking the open state of the equipment holding device with an electrical switch as described in claim 1, characterized in that, The switch shaft (1-1) is a key switch, which is turned with a matching key. A locking hook (1-2) is fixed on its rotating body. The key switch itself has a contact switch, which can replace the electrical switch or be connected in series with the electrical switch.

3. The mechanism for linking the open state of the equipment holding device with an electrical switch as described in claim 1, characterized in that, The hook head (1-3) is block-shaped with a hole at one end. The hook head pivot (1-6) passes through the hole and rotates around the axis of the hole. The side that is in contact with the lock hook (1-2) has a fan-shaped groove (1-11). The side that is in contact with the hook head (1-3) has a boss (1-12). The boss (1-12) is located in the fan-shaped groove (1-11) of the hook head (1-3). The spring (1-4) is located in the fan-shaped groove (1-11).

4. The mechanism for linking the open state of the equipment holding device with an electrical switch as described in claim 3, characterized in that, The spring (1-4) is a torsion spring, which is sleeved on the hook head shaft (1-6). One torsion arm is locked on the wall of the fan-shaped groove (1-11), and the other torsion arm is locked on the side of the boss (1-12).

5. The mechanism for linking the open state of the equipment holding device with an electrical switch as described in claim 1, characterized in that, The hook head (1-3) is block-shaped with a hole at one end. The hook head pivot (1-6) passes through the hole and rotates around the axis of the hole. The side that is in contact with the lock hook (1-2) has a boss (1-12). The side that is in contact with the hook head (1-3) has a fan-shaped groove (1-11). The boss (1-12) is located in the fan-shaped groove (1-11). The spring (1-4) is located in the fan-shaped groove (1-11).

6. The mechanism for linking the open state of the equipment holding device with an electrical switch as described in claim 5, characterized in that, The end of the hook (1-3) away from the hole is an arc surface, and the axis of the arc surface is the axis of the hole where the hook shaft (1-6) is installed.

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