Relay calibrator protection device with temporary locking structure

Abstract

The utility model provides a relay calibrator protection device with temporary locking structures, which comprises a composite protection box, two pulling type temporary locking mechanisms and a relay calibrator, and is characterized in that the composite protection box is fixedly provided with the two pulling type temporary locking mechanisms, and the pulling type temporary locking mechanisms are arranged in a mirror symmetry manner; the relay calibrator is arranged in the composite protection box; according to the utility model, a pulling type operation mechanism is innovatively adopted to replace the traditional twisting and rotating temporary locking design, so that the risks of misoperation and external mistaken touch are reduced. Meanwhile, a limiting structure is optimized, inward hidden design is adopted, fracture or deformation caused by external impact is effectively avoided, and stability and reliability of the temporary locking function are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of relay calibrators, and in particular relates to a relay calibrator protection device with a temporary locking structure. Background Art

[0002] In output circuits, relays, as electrical devices, control the controlled variable through predetermined step changes. The key lies in the interaction between the control system and the controlled system. Relays play a crucial role in automated control circuits, using small currents to control large currents, acting like intelligent "automatic switches." They not only enable automatic regulation within circuits but also perform multiple functions, including safety protection and circuit switching.

[0003] To ensure stable relay operation, the use of a relay calibrator is crucial. Considering that calibrators are often used in outdoor environments, they must be able to withstand harsh external conditions to prevent external factors from negatively impacting device performance and shortening their service life.

[0004] There are already protection solutions for relay calibrators on the market. Through the cooperation of the cleverly designed first and second locking components, the device's temporary locking function is realized, thereby effectively preventing accidental touch when not in use. However, existing protection devices, such as the design recorded in announcement number CN220552879U, have obvious shortcomings in their knob-type locking components. This design relies on twisting and rotating operations, which is not only prone to errors, but also susceptible to accidental touch from the outside. To make matters worse, since the limiter is exposed, it is very easy to break or deform once it encounters external impact or bumps, causing the temporary locking function to fail.

[0005] Therefore, it is very necessary to invent a relay tester protection device with a temporary locking structure. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a relay calibrator protection device with a temporary locking structure, comprising a composite protection box, a bendable temporary locking mechanism and a relay calibrator, wherein two bendable temporary locking mechanisms are fixedly mounted on the composite protection box, and the bendable temporary locking mechanisms are arranged in a mirror-symmetrical manner; the relay calibrator is installed inside the composite protection box;

[0007] The bend-type temporary locking mechanism includes a lock base, a spring, a temporary locking clamp, a pull rod, a bend head and a movable groove. The lock base is fixedly installed on the composite protective box. The interior of the lock base is elastically connected to the temporary locking clamp through the spring. The temporary locking clamp is fixedly connected to one end of the pull rod, and the other end of the pull rod is rotatably connected to the bend head. The movable groove is provided on the bend head.

[0008] Preferably, the composite protective box includes a multi-layer composite box, a handle seat, a handle, a card slot and a top cover. The handle seat is fixedly installed on the outside of the multi-layer composite box, the handle is rotatably installed on the handle seat, and the card slot is mirror-symmetrically opened on the handle seat; the top cover is hingedly installed on the multi-layer composite box, and the lock base is fixedly installed on the top cover.

[0009] Preferably, the multi-layer composite box is provided with a chamfer, and the size of the card slot provided on the multi-layer composite box allows the temporary locking card to be accommodated. The temporary locking card is a cylinder with an inclined surface, and the temporary locking card and the card slot are on the same vertical plane.

[0010] Preferably, the spring is located in a through hole provided on the lock base, and the through hole provided on the lock base allows the temporary locking clamp to slide and displace.

[0011] Preferably, the breaking head contacts the surface of the lock base, wherein a corner close to the lock base is rounded; the pull rod is a "T"-shaped structure, and the movable groove is opened in the middle position of the breaking head.

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

[0013] This utility model innovates the temporary locking design that relies on twisting and rotating operations in traditional technologies and introduces a bend-type operation mechanism. This change not only reduces the possibility of misoperation, but also greatly reduces the risk of temporary locking function failure due to external accidental contact. In addition, the limiting structure (temporary locking clamp) has been optimized and an inwardly hidden design has been adopted to replace the original exposed design. This design can effectively prevent the limiting structure (temporary locking clamp) from breaking or deforming when subjected to external impact or bumps, thereby avoiding the temporary locking function from failing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the disassembled structure of the prying type temporary locking mechanism of the utility model.

[0016] Figure 3 It is a schematic cross-sectional view of the prying type temporary locking mechanism of the utility model.

[0017] In the figure:

[0018] Composite protection box 1, bend-type temporary locking mechanism 2, lock base 21, spring 22, temporary locking clamp 23, pull rod 24, bend head 25, movable slot 26, relay calibrator 3. DETAILED DESCRIPTION

[0019] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the embodiments, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] As shown in the attached Figure 1 to the attached Figure 3 figure:

[0022] A relay calibration instrument protection device with a temporary locking structure provided by the present utility model includes a composite protection box 1, a toggle-type temporary locking mechanism 2, and a relay calibration instrument 3. Two of the toggle-type temporary locking mechanisms 2 are fixedly installed on the composite protection box 1, and the toggle-type temporary locking mechanisms 2 are arranged in mirror symmetry; the relay calibration instrument 3 is installed inside the composite protection box 1.

[0023] The bend-type temporary locking mechanism 2 includes a lock base 21, a spring 22, a temporary locking clamp 23, a pull rod 24, a bend head 25 and a movable slot 26. The lock base 21 is fixedly installed on the composite protective box 1. The interior of the lock base 21 is elastically connected to the temporary locking clamp 23 through the spring 22. The temporary locking clamp 23 is fixedly connected to one end of the pull rod 24, and the other end of the pull rod 24 is rotatably connected to the bend head 25. The movable slot 26 is provided on the bend head 25. The bend-type temporary locking mechanism 2 abandons the traditional twisting and rotating operation method and adopts a swinging operation instead, which not only reduces the misoperation rate, but also significantly reduces the risk of temporary locking function failure due to external accidental touch.

[0024] Embodiment 1:

[0025] Specifically, the composite protective box 1 includes a multi-layer composite box 11, a handle seat 12, a handle 13, a card slot 14 and a top cover 15. The handle seat 12 is fixedly installed on the outside of the multi-layer composite box 11, and the handle 13 is rotatably installed on the handle seat 12. The card slot 14 is mirror-symmetrically opened on the handle seat 12; the top cover 15 is hingedly installed on the multi-layer composite box 11, and the lock base 21 is fixedly installed on the top cover 15. The multi-layer composite box 11 adopts a multi-layer composite design, which provides good protection effect, and is equipped with a handle 13 for easy carrying and operation.

[0026] Specifically, a chamfer is provided on the multi-layer composite box 11, and the size of the card slot 14 provided on the multi-layer composite box 11 allows for the temporary locking card head 23 to be accommodated. The temporary locking card head 23 is a cylinder with an inclined surface. The temporary locking card head 23 and the card slot 14 are on the same vertical plane. The chamfer and the size of the card slot 14 match the temporary locking card head 23 to ensure the stability and reliability of the temporary locking function.

[0027] Specifically, the spring 22 is located in the through hole of the lock base 21. The through hole of the lock base 21 allows the temporary locking clamp 23 to slide and displace, thereby ensuring the elastic connection of the temporary locking clamp 23 and avoiding external interference with the spring 22.

[0028] Specifically, the breaking head 25 contacts the surface of the lock base 21 to ensure the stability and reliability of the operation. Among them, the corner of the breaking head 25 close to the lock base 21 adopts a rounded corner design. This rounded corner serves as a support point, so that the breaking head 25 can gradually move in an arc trajectory with this point as the center when breaking. This design not only makes the operation smoother and more fluent, but also avoids accidental injuries that may be caused by sharp corners, thereby improving the safety of operation. The pull rod 24, as an important component connecting the breaking head 25 and the temporary locking clamp 23, adopts a "T"-shaped structure. This structure enables the pull rod 24 to move laterally smoothly when driven by the breaking head 25, thereby driving the temporary locking clamp 23 to move. The movable groove 26 is opened in the middle position of the breaking head 23, providing sufficient space for the lateral movement of the pull rod 24, ensuring smooth operation.

[0029] To unlock, the user simply moves the lever 25, which then moves in an arc about the corner point, simultaneously driving the pull rod 24 in lateral motion. The movement of the pull rod 24 further disengages the temporary locking latch 23 from the slot 14, compressing the spring 22 and releasing the temporary lock. This simple and intuitive process allows users to easily unlock the device without requiring complex operating techniques.

[0030] Embodiment 2:

[0031] When the user needs to unlock the device, he only needs to gently bend the bend head 25 upwards. Since the corner of the bend head 25 close to the lock base 21 is designed to be rounded, during the bend process, the bend head 25 will use this rounded corner as a support point and gradually move in an arc trajectory. This design not only makes the operation smoother and more fluent, but also avoids accidental injuries that may be caused by sharp corners. As the bend head 25 moves, the pull rod 24 connected to its rotation begins to move laterally. The "T"-shaped structure of the pull rod 24 enables it to stably withstand the force of the bend head 25 and effectively transmit this force to the temporary locking clamp 23. At the same time, the design of the movable groove 26 provides sufficient movement space for the pull rod 24, ensuring smooth operation. The lateral movement of the pull rod 24 further drives the temporary locking clamp 23 to disengage from the slot 14. During this process, the temporary locking clamp 23 compresses the spring 22, and the elastic force of the spring 22 provides power for the subsequent reset of the temporary locking clamp 23. When the temporary locking clamp 23 is completely out of the card slot 14, the temporary locking state of the composite protective box 1 is released, and the user can open the top cover 15 to operate the relay calibrator. The entire unlocking process is simple and intuitive, and does not require complicated operating skills. The user can easily unlock it with just a light bend. This design not only improves the convenience of operation, but also significantly reduces the possibility of misoperation. At the same time, due to the close fit between the temporary locking clamp 23 and the card slot 14 and the elastic effect of the spring 22, the temporary locking function of the device has high stability and reliability, and can effectively prevent unlocking due to accidental external touch.

[0032] Any technical solution that makes use of the technical solution of the present utility model, or is designed by those skilled in the art inspired by the technical solution of the present utility model to achieve the above technical effects, shall fall within the protection scope of the present utility model.

Claims

1. A relay calibration instrument protection device with a temporary locking structure, characterized in that, It includes a composite protection box (1), a toggle-type temporary locking mechanism (2), and a relay calibrator (3). Two of the toggle-type temporary locking mechanisms (2) are fixedly installed on the composite protection box (1), and the toggle-type temporary locking mechanisms (2) are arranged in mirror symmetry; the relay calibrator (3) is installed inside the composite protection box (1). The toggle-type temporary locking mechanism (2) includes a lock head base (21), a spring (22), a temporary locking chuck (23), a pull rod (24), a toggle head (25), and a movable slot (26). The lock head base (21) is fixedly installed on the composite protection box (1). The lock head base (21) is elastically connected to the temporary locking chuck (23) through the spring (22). The temporary locking chuck (23) is fixedly connected to one end of the pull rod (24). The other end of the pull rod (24) is rotatably connected to the toggle head (25). The movable slot (26) is opened on the toggle head (25).

2. The protection device of a relay calibrator with a temporary locking structure as described in claim 1, characterized in that: The composite protection box (1) includes a multi-layer composite box (11), a handle base (12), a handle (13), a card slot (14), and a top cover (15). The handle base (12) is fixedly installed outside the multi-layer composite box (11). The handle (13) is rotatably installed on the handle base (12). The card slots (14) are symmetrically opened on the handle base (12) in mirror symmetry; the top cover (15) is hingedly installed on the multi-layer composite box (11). The lock head base (21) is fixedly installed on the top cover (15).

3. The protection device of a relay calibrator with a temporary locking structure according to claim 2, characterized in that: A chamfer is opened on the multi-layer composite box (11). The size of the card slot (14) opened on the multi-layer composite box (11) allows the temporary locking chuck (23) to be received. The temporary locking chuck (23) is a cylinder with an inclined surface. The temporary locking chuck (23) and the card slot (14) are in the same vertical plane.

4. The protection device of a relay calibrator with a temporary locking structure according to claim 3, characterized in that: The spring (22) is located in the through hole opened on the lock head base (21). The through hole opened on the lock head base (21) allows the temporary locking chuck (23) to slide and displace.

5. The protection device of a relay calibrator with a temporary locking structure as described in claim 4, characterized in that: The toggle head (25) is in contact with the surface of the lock head base (21). Among them, one corner close to the lock head base (21) is a rounded corner; the pull rod (24) is of a "T" - shaped structure, and the movable slot (26) is opened at the middle position of the toggle head (25).

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