State monitoring management equipment protection device for electrical equipment and use method

Abstract

The invention belongs to the field of electrical equipment monitoring, and discloses a state monitoring management equipment protection device for electrical equipment and a use method.Due to the design of a plurality of mounting connecting grooves and moving blocks on a protection shell, a limiting device can rapidly and flexibly adjust the position, and the safety of the state monitoring management equipment protection device is improved. The display screen body can be mounted and dismounted without screwing a plurality of screws, so that mounting and dismounting are more convenient, the tedious fixing process is omitted, the display screen body can be dismounted conveniently, maintenance is facilitated, the effect of facilitating maintenance is achieved, and the operation efficiency is improved. Through the hinging structure of the main connecting rod and the moving block, the moving block can be arranged in any mounting connecting groove, various mounting modes and position adjustment are provided, and the device adapts to different environments and requirements.

Description

Technical Field

[0001] The present invention belongs to the field of electrical equipment monitoring, and in particular relates to a state monitoring management equipment protection device for electrical equipment and a use method thereof. Background Art

[0002] Electrical equipment is a general term for generators, transformers, power lines, circuit breakers and other equipment in the power system. The important role that electricity plays in our lives and production cannot be ignored. It brings us great convenience and becomes an important energy source in our production and life. The most critical factor that enables the normal operation and transmission of electricity in power plants is electrical equipment.

[0003] In the prior art, monitoring and management equipment generally has a display screen to help users receive images in real time. However, when installing the display screen, in order to make it more stable and able to work stably for a long time, bolts and screws are generally used for fixing. This method is more troublesome to disassemble and install. Therefore, a state monitoring and management equipment protection device for electrical equipment is proposed to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of complicated fixing methods and cumbersome installation and disassembly processes, and to provide a condition monitoring and management equipment protection device for electrical equipment and a method of use.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: In a first aspect, the present invention provides a condition monitoring and management device protection device for electrical equipment, comprising a protective housing arranged on a display screen body, a display area of ​​the display screen body being placed in the protective housing, and a limit device being arranged next to the protective housing; The limiting device includes a main connecting rod, which is hinged on the non-display area of ​​the display screen body. A moving block is hinged on the main connecting rod. A plurality of installation connecting grooves are opened on the protective shell, and the moving block can be placed in any installation connecting groove.

[0006] A further improvement of the present invention is that the main connecting rod is connected to the hinge ring, the hinge ring is hinged with a connecting ring, a fixing pin is arranged on the non-display area of ​​the display screen body, and the connecting ring can be inserted into the fixing pin.

[0007] A further improvement of the present invention is that a metal spring sheet is provided on the contact surface between the fixing pin and the connecting ring.

[0008] A further improvement of the present invention is that a guide block is provided on the non-display area of ​​the display screen body, and the protective housing is placed between the guide block and the display area of ​​the display screen body.

[0009] A further improvement of the present invention is that a first rotating seat is provided on the main connecting rod, a moving rod is hinged on the first rotating seat, and a moving block is fixed to the end of the moving rod.

[0010] A further improvement of the present invention is that a guide block is provided on the non-display area of ​​the display screen body, a receiving groove is provided in the guide block, and the moving block is placed in the receiving groove.

[0011] A further improvement of the present invention is that a spring is arranged between the moving block and the accommodating groove, the moving block is a trapezoidal structure, the inclined surface of the moving block faces the insertion direction of the protective shell, the inclined surface of the moving block can be placed in the installation connecting groove, a movable cavity is arranged in the moving block, the moving rod is connected to the movable plate, and the movable plate is placed in the movable cavity.

[0012] In a second aspect, the present invention provides a method for using a condition monitoring management device protection device for electrical equipment, comprising the following steps: Insert the protective shell beside the stopper so that the display area of ​​the display screen body is placed inside the protective shell; After the protective shell is inserted into the desired position, the main connecting rod is moved so that the moving block on the main connecting rod is placed in the desired installation connecting groove to complete the installation of the protective shell.

[0013] A further improvement of the present invention is that the main connecting rod is connected to the hinge ring, the hinge ring is hinged with the connecting ring, and a fixing pin is provided on the non-display area of ​​the display screen body; After the protective shell is inserted into the required position, the main connecting rod is rotated to place the moving block in the required installation connecting groove, and the connecting ring in the hinge ring is selected to be inserted into the fixing pin to complete the fixing of the protective shell.

[0014] A further improvement of the present invention is that a spring is arranged between the moving block and the accommodating groove, the moving block is a trapezoidal structure, the inclined surface of the moving block faces the insertion direction of the protective shell, the inclined surface of the moving block can be placed in the installation connection groove, a movable cavity is arranged in the moving block, the moving rod is connected to the movable plate, and the movable plate is placed in the movable cavity; The main connecting rod is fixed in position. When the protective shell is inserted beside the limit device, the protective shell contacts the inclined surface of the moving block, squeezes the inclined surface of the moving block, and makes the moving block squeeze the spring to move. The movable plate connected to the moving rod moves in the movable cavity. When the moving block moves to the limit, the protective shell continues to move downward. When the installation connection groove on the protective shell is aligned with the moving block, the spring drives the moving block to return and be placed in the installation connection groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Due to the design of several installation connection grooves and moving blocks on the protective shell of the present invention, the position limiting device can adjust the position quickly and flexibly, and there is no need to screw multiple screws to remove and install the display screen body, making installation and disassembly more convenient, eliminating the cumbersome fixing process, and facilitating the disassembly of the display screen body, thereby facilitating maintenance, achieving the effect of facilitating maintenance, and improving operation efficiency. Through the hinged structure of the main connecting rod and the moving block, the moving block can be placed in any installation connection groove, providing a variety of installation methods and position adjustment to adapt to different environments and requirements. The position limiting device of the present invention can ensure that the protective shell is firmly fixed on the display screen body through the design of hinge and limit, avoiding the problem of insufficient stability in the traditional method, and effectively improving the safety of the equipment. The design of the protective shell covering the display screen of the present invention can effectively protect the display screen of the electrical equipment, avoid the adverse effects of the external environment such as dust, moisture or physical damage on the equipment, thereby extending the service life of the equipment. In summary, the device of the present invention has great improvements in operational convenience, flexibility and stability, which helps to improve the practicality and safety of the equipment and solves the problem that the equipment for monitoring and managing the operation status of electrical equipment is not easy to repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure in the middle.

[0017] In the figure: 1. Protective shell; 2. Display screen body; 3. Installation connection groove; 4. Trapezoidal fixing block; 5. Accommodating groove; 6. Spring; 7. Moving block; 8. Movable cavity; 9. Movable plate; 10. Moving rod; 11. First rotating seat; 12. Main connecting rod; 13. Second rotating seat; 14. Articulated ring; 15. Connecting ring; 16. Fixing pin; 17. Metal spring; 18. Guide block. DETAILED DESCRIPTION

[0018] In order to further understand the content of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the embodiments are only for explaining the present invention and are not intended to limit it.

[0019] Embodiment 1: See also Figure 1A condition monitoring and management equipment protection device for electrical equipment includes a protective shell 1 arranged on a display screen body 2, a display area of ​​the display screen body 2 is placed in the protective shell 1, and a limiting device is arranged next to the protective shell 1; the limiting device includes a main connecting rod 12, the main connecting rod 12 is hinged on the non-display area of ​​the display screen body 2, a moving block 7 is hinged on the main connecting rod 12, a plurality of installation connecting grooves 3 are opened on the protective shell 1, and the moving block 7 can be placed in any installation connecting groove 3.

[0020] A method for using a condition monitoring and management device protection device for electrical equipment, comprising: Insert the protective shell 1 beside the limiting device so that the display area of ​​the display screen body 2 is placed inside the protective shell 1; after the protective shell 1 is inserted to the desired position, move the main connecting rod 12 so that the moving block 7 on the main connecting rod 12 is placed in the desired installation connecting groove 3 to complete the installation of the protective shell 1.

[0021] Embodiment 2: This embodiment further limits the connection form of the main connecting rod 12. The main connecting rod 12 is connected to the hinge ring 14. The hinge ring 14 is hinged with a connecting ring 15. A fixing pin 16 is provided on the non-display area of ​​the display screen body 2. The connecting ring 15 can be inserted into the fixing pin 16.

[0022] When in use, after the protective shell 1 is inserted into the desired position, the main connecting rod 12 is rotated to place the moving block 7 in the desired installation connecting groove 3, and the connecting ring 15 in the hinge ring 14 is selected to be inserted into the fixing pin 16 to complete the fixing of the protective shell 1.

[0023] In this embodiment, through the cooperation of the hinge ring 14 and the connecting ring 15, the connection structure of the entire protective device becomes more flexible and can be adjusted at multiple angles. This makes it easier to adjust the relative position between the protective shell and the display screen body, and also increases the adaptability of the device in different operating environments. The connecting ring 15 can be inserted into the fixing pin 16. This design provides an additional fixing point to ensure that the protective shell can be firmly fixed after being adjusted in place to avoid loosening or offset caused by external force or vibration. This is especially important for electrical equipment used in complex industrial environments. The combination of the hinge ring 14 and the connecting ring 15 provides more adjustment possibilities, which can not only facilitate the installation and removal of the protective shell, but also ensure that the equipment will not be damaged due to misoperation during operation. At the same time, the cooperation between the connecting ring and the fixing pin also provides additional safety protection and reduces the risk of accidental falling off. This design makes the installation and adjustment process of the protective shell more convenient and quick, reduces the number of times and operation steps required to use additional tools, and can greatly improve work efficiency, especially in scenes with frequent maintenance or monitoring.

[0024] Embodiment 3: In this embodiment, the contact surface between the fixing pin 16 and the connecting ring 15 is further limited. A metal spring 17 is provided on the contact surface between the fixing pin 16 and the connecting ring 15 .

[0025] When the connecting ring 15 is inserted into the fixing pin 16, the metal spring 17 is compressed. The elastic properties of the spring enable it to form a close contact between the connecting ring 15 and the fixing pin 16, ensuring the stability of the connection. When the connecting ring contacts the positioning pin, the metal spring 17 can provide additional friction to prevent the connecting ring from sliding or loosening during use. This allows the equipment to maintain a stable positioning under vibration or external force. When the user needs to adjust or remove the protective device, the elasticity of the metal spring 17 allows the connecting ring 15 to easily detach from the fixing pin 16, making it easy to operate without the need for additional tools or complicated steps. The metal spring can provide certain feedback when compressed, so that the user can clearly know whether the connection is in place during the installation process, thereby improving the accuracy of the operation.

[0026] Embodiment 4: This embodiment has a new technical feature: a guide block 18 is provided on the non-display area of ​​the display screen body 2 , and the protective housing 1 is placed between the guide block 18 and the display area of ​​the display screen body 2 .

[0027] The guide block 18 is installed in the non-display area of ​​the display screen body 2 to play a role of fixing and guiding. When the protective shell 1 is installed, the positioning function of the guide block allows it to slide or move along a predetermined track to ensure that the shell can accurately cover the display area of ​​the display screen. The guide block 18 provides a physical limit for the installation of the protective shell 1 to prevent the protective shell from being misplaced or offset on the display screen body. When the protective shell slides onto the display screen, the guide block ensures that the shell and the screen are always aligned to avoid offset caused by external force or misoperation, thereby ensuring full protection of the screen. The guide block 18 is located between the protective shell 1 and the display area of ​​the display screen body, and acts as a spacing to prevent the protective shell from directly contacting the display screen. This can prevent the shell from scratching the display screen during sliding and extend the service life of the screen. Since the guide block 18 acts as a buffer layer, the protective shell will not have direct friction with the screen display area during installation, removal or movement, reducing the wear of the equipment and improving the durability of the system. When installing the protective shell, the guide block 18 provides certain support and guidance to make the installation process smoother. The user does not need to manually align the protective housing and the display screen precisely, but only needs to place the protective housing against the guide block to successfully complete the installation, which reduces the difficulty of installation and improves efficiency. The setting of the guide block 18 can not only guide the installation of the housing, but also provide additional support after the installation is completed, preventing the protective housing from shaking or loosening during use, thereby improving the stability of the entire structure.

[0028] Embodiment 5: This embodiment has a new technical feature: a first rotating seat 11 is provided on the main connecting rod 12 , a moving rod 10 is hinged on the first rotating seat 11 , and a moving block 7 is fixed to the end of the moving rod 10 .

[0029] This design increases the flexibility of the moving rod, making it easier to adjust the protective shell between different angles and positions. After the moving rod 10 is hinged to the first rotating seat 11, the user can adjust the position of the protective shell by rotating the moving rod. The moving rod 10 can rotate around the hinge point of the first rotating seat 11, so that the moving block 7 fixed at the end of the moving rod can be flexibly moved between different positions. This structure is convenient for users to adjust the position of the shell according to their needs, and improves the flexibility of use. The moving block 7 is fixed at the end of the moving rod 10, and the moving block can be pushed into or pulled out of the installation connection groove 3 on the protective shell by rotating the moving rod. The fixing effect of the moving block enables the protective shell to be accurately positioned in different slots. When the moving block 7 is inserted into the installation connection groove 3, the overall position of the protective shell is locked to prevent loosening or displacement. Due to the hinged design of the moving rod 10 and the first rotating seat 11, the user can easily adjust the position of the protective shell at multiple angles. The length of the moving rod and the rotation of the first rotating seat can make the protective shell flexibly cover the display screen, and even bypass different parts of the display screen for protection or maintenance operations. This structure makes the installation and removal process of the protective housing easier. The user only needs to rotate the moving rod 10 and insert or remove the moving block 7 from the installation connection groove 3. There is no need for a complicated manual alignment process, which greatly simplifies the operation process. The design of the moving rod 10 not only allows the flexible adjustment of the housing position, but also maintains the stability of the overall structure. The cooperation between the moving rod and the moving block ensures that the protective housing will not easily loosen or lose its original position under the action of external force.

[0030] Embodiment 6: This embodiment further limits the position of the moving block 7 . A guide block 18 is provided on the non-display area of ​​the display screen body 2 . An accommodating groove 5 is provided in the guide block 18 . The moving block 7 is placed in the accommodating groove 5 .

[0031] The receiving groove 5 in the guide block 18 provides a special track for the moving block 7. When the moving block 7 is placed in the receiving groove 5, it is restricted by the notch in a specific path and can slide along the receiving groove. This ensures that the movement direction of the moving block 7 is strictly controlled to prevent it from deviating from the established track. Through the restriction of the receiving groove 5, the moving block 7 can slide in the groove of the guide block 18, thereby pushing the protective shell 1 to move accurately on the surface of the display screen body 2. The design of the receiving groove enables the moving block 7 to adjust the position of the shell within a fixed range, thereby ensuring that the alignment of the shell with the display screen is accurate and avoids misalignment. The function of the receiving groove 5 makes the moving block 7 smoother during the sliding process and reduces the jamming phenomenon. This can effectively simplify the installation and removal operation of the protective shell. The user only needs to push the moving block 7 along the notch of the guide block to push the shell to the appropriate position and complete the installation process. When the moving block 7 is placed in the receiving groove 5, the structure of the notch provides stable support for the moving block to prevent it from shaking or loosening during use. This design ensures a close fit between the moving block and the guide block through physical restrictions, so that the protective shell can remain stable in different positions. The design of the receiving groove 5 reduces the direct friction between the moving block 7 and other components, especially the risk of direct contact with the display screen surface. The structure of the guide block 18 effectively separates the contact between the moving block and the display screen, reduces the risk of wear during movement, and extends the service life of the device. The receiving groove 5 provides a clear sliding path for the moving block 7, which enables the user to quickly find the exact installation position of the housing when maintaining or adjusting the protective housing and ensure that it will not deviate. This reduces the error caused by manual adjustment and ensures simple and stable operation.

[0032] Embodiment 7: This embodiment further limits the movement structure of the moving block 7. A spring 6 is arranged between the moving block 7 and the accommodating groove 5. The moving block 7 is a trapezoidal structure. The inclined surface of the moving block 7 faces the insertion direction of the protective shell 1. The inclined surface of the moving block 7 can be placed in the installation connecting groove 3. A movable cavity 8 is arranged in the moving block 7. The moving rod 10 is connected to the movable plate 9, and the movable plate 9 is placed in the movable cavity 8.

[0033] When in use, the main connecting rod 12 is fixed in position. When the protective shell 1 is inserted next to the limit device, the protective shell 1 contacts the inclined surface of the moving block 7, squeezing the inclined surface of the moving block 7, so that the moving block 7 squeezes the spring 6 to move, and the movable plate 9 connected to the moving rod 10 moves in the movable cavity 8. When the moving block 7 moves to the limit, the protective shell 1 continues to move downward; when the installation connecting groove 3 on the protective shell 1 is aligned with the moving block 7, the spring 6 drives the moving block 7 to return and is placed in the installation connecting groove 3.

[0034] The setting of the spring 6 provides the moving block 7 with an automatic reset function. When the moving block 7 moves in the receiving groove 5, the spring 6 can push the moving block back to the initial position by its elastic force. This makes it easier for the user to adjust the position of the moving block when installing or removing the protective shell, reducing the complexity and errors of manual operation. The trapezoidal structure and the inclined surface design of the moving block 7 enable the inclined surface to slide in smoothly and clamp when it is inserted into the installation connection groove 3. The combination of the trapezoidal inclined surface structure and the installation connection groove 3 enables the moving block to automatically produce a locking effect after insertion, ensuring that the shell is firmly fixed and avoiding loosening during use. The inclined surface structure provides a smoother operating experience during installation, allowing the moving block to smoothly enter the slot, and at the same time automatically lock the position by using the trapezoidal structure, thereby reducing the possibility of reverse sliding and accidental detachment. The design of the movable cavity 8 and the movable plate 9 makes the movement inside the moving block more flexible. The movable plate 9 can be freely adjusted in the movable cavity 8 by connecting the moving rod 10, allowing the moving block 7 to be fine-tuned as needed. This design provides greater flexibility, and users can easily adjust the position of the protective shell to ensure that the screen is optimally protected. The movable plate 9 is placed in the movable cavity 8, so that the internal components of the moving block maintain an appropriate gap, reducing the direct friction and collision between the moving block and other components. This design can significantly extend the service life of the device and reduce the wear caused by frequent operation in daily use. Due to the trapezoidal slope design and the action of the spring 6, the self-locking effect generated when the moving block is inserted into the installation connection groove 3 improves the stability of the protective shell. This design is particularly suitable for occasions that require frequent adjustment or external impact. Under strong vibration or external force, the moving block can still remain stable and is not easy to loosen or fall off. The combination of spring 6 and movable cavity 8 makes the operation process smoother and more convenient. Users can easily adjust the position of the shell through the moving rod 10 and the movable plate 9, reducing the need for human power. The automatic reset function of the spring reduces the number of manual adjustments required, simplifies the installation, adjustment and disassembly process, and improves the efficiency of the operation. The elastic structure of the spring 6 ensures that the moving block 7 can withstand insertion and extraction operations multiple times and maintain a consistent effect. Due to the precise design of the movable plate 9 and the moving block 7, they can quickly return to their original state after each operation, and will not become loose or degraded due to frequent operation. This improves the durability of the protective shell, enabling it to cope with long-term use and multiple installations. This embodiment enhances the self-locking function, adjustment flexibility and ease of operation of the protective shell through the combination of the spring 6, the trapezoidal moving block, the movable cavity 8 and the movable plate 9. The automatic resetting of the spring, the self-locking of the inclined surface, and the flexible adjustment of the movable plate cooperate with each other, making the protective shell more stable and durable during use, reducing friction loss, and greatly simplifying the operation process, thereby significantly improving the overall performance and user experience of the device.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A condition monitoring and management equipment protection device for electrical equipment, characterized in that: It comprises a protective shell (1) arranged on a display screen body (2), a display area of ​​the display screen body (2) being placed inside the protective shell (1), and a limiting device being arranged next to the protective shell (1); The limiting device comprises a main connecting rod (12), the main connecting rod (12) is hinged on the non-display area of ​​the display screen body (2), a moving block (7) is hinged on the main connecting rod (12), a plurality of mounting connection grooves (3) are provided on the protective housing (1), and the moving block (7) can be placed in any of the mounting connection grooves (3).

2. A condition monitoring management equipment protection device for electrical equipment according to claim 1, characterized in that: The main connecting rod (12) is connected to the hinge ring (14), the hinge ring (14) is hingedly connected to a connecting ring (15), a fixing pin (16) is provided on the non-display area of ​​the display screen body (2), and the connecting ring (15) can be inserted into the fixing pin (16).

3. A condition monitoring and management equipment protection device for electrical equipment according to claim 2, characterized in that: A metal spring sheet (17) is provided on the contact surface between the fixing pin (16) and the connecting ring (15).

4. A condition monitoring and management equipment protection device for electrical equipment according to claim 1, characterized in that: A guide block (18) is provided on the non-display area of ​​the display screen body (2), and the protective housing (1) is placed between the guide block (18) and the display area of ​​the display screen body (2).

5. The condition monitoring management equipment protection device for electrical equipment according to claim 1, characterized in that: A first rotating seat (11) is provided on the main connecting rod (12), a moving rod (10) is hinged on the first rotating seat (11), and a moving block (7) is fixed to the end of the moving rod (10).

6. A condition monitoring and management equipment protection device for electrical equipment according to claim 5, characterized in that: A guide block (18) is provided on the non-display area of ​​the display screen body (2), a receiving groove (5) is provided in the guide block (18), and the moving block (7) is placed in the receiving groove (5).

7. A condition monitoring and management equipment protection device for electrical equipment according to claim 5 or 6, characterized in that: A spring (6) is arranged between the moving block (7) and the accommodating groove (5); the moving block (7) is a trapezoidal structure; the inclined surface of the moving block (7) faces the insertion direction of the protective housing (1); the inclined surface of the moving block (7) can be placed in the installation connection groove (3); a movable cavity (8) is arranged in the moving block (7); the moving rod (10) is connected to the movable plate (9); and the movable plate (9) is placed in the movable cavity (8).

8. A method for using the condition monitoring and management equipment protection device for electrical equipment according to claim 1, characterized in that: The following steps are involved: Inserting the protective housing (1) beside the limiting device so that the display area of ​​the display screen body (2) is placed inside the protective housing (1); After the protective shell (1) is inserted into the desired position, the main connecting rod (12) is moved so that the moving block (7) on the main connecting rod (12) is placed in the desired installation connection groove (3), thereby completing the installation of the protective shell (1).

9. The method for using the condition monitoring and management equipment protection device for electrical equipment according to claim 8, characterized in that: The main connecting rod (12) is connected to the hinge ring (14), the hinge ring (14) is hingedly connected to the connecting ring (15), and a fixing pin (16) is provided on the non-display area of ​​the display screen main body (2); After the protective housing (1) is inserted into the desired position, the main connecting rod (12) is rotated to place the moving block (7) in the desired installation connection groove (3), and the connecting ring (15) in the hinge ring (14) is selected so that the connecting ring (15) is inserted into the fixing pin (16) to complete the fixing of the protective housing (1).

10. The method for using the condition monitoring and management equipment protection device for electrical equipment according to claim 8, characterized in that: A spring (6) is provided between the moving block (7) and the receiving groove (5); the moving block (7) is a trapezoidal structure; the inclined surface of the moving block (7) faces the insertion direction of the protective housing (1); the inclined surface of the moving block (7) can be placed in the installation connection groove (3); a movable cavity (8) is provided in the moving block (7); the moving rod (10) is connected to the movable plate (9); and the movable plate (9) is placed in the movable cavity (8); The main connecting rod (12) is fixed in position. When the protective housing (1) is inserted beside the limiting device, the protective housing (1) contacts the inclined surface of the moving block (7), squeezes the inclined surface of the moving block (7), and causes the moving block (7) to squeeze the spring (6) to move. The movable plate (9) connected to the movable rod (10) moves in the movable cavity (8). When the moving block (7) moves to the limit, the protective housing (1) continues to move downward. When the installation connection groove (3) on the protective housing (1) is aligned with the moving block (7), the spring (6) drives the moving block (7) to return and be placed in the installation connection groove (3).

Images