Relay strong suction tooling
By designing a relay forced engagement fixture with a fixed plate, a movable plate, and a positioning mechanism, the problems of inaccurate relay forced engagement and limited application range in existing technologies are solved, and fast and safe engagement of contacts for multiple relay models is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN ENG VOCATIONAL & TECH COLLEGE
- Filing Date
- 2025-07-18
- Publication Date
- 2026-05-29
AI Technical Summary
Existing relay-forced engagement fixtures cannot accurately complete forced engagement in a short time, and their application scope is limited, posing safety risks and operational delays.
A relay forced engagement fixture was designed, comprising a fixed plate, a movable plate, a pressure head, and a positioning mechanism. By having the fixed plate cooperate with the relay housing and the movable plate be positioned with the positioning mechanism, a fast and accurate forced engagement is achieved.
It achieves fast and accurate relay contact engagement, improves operating efficiency, reduces safety risks, and is applicable to various relay models.
Smart Images

Figure CN224304632U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a relay strong-actuation fixture, specifically a relay strong-actuation fixture. Background Technology
[0002] The number of urban rail transit vehicles is large, and a large number of 3RH type relays are used on them. The relays may fail to engage properly during the journey. Since urban rail transit needs to operate normally during the day, urban rail vehicles need to run on time according to the prescribed schedule. If a relay fails suddenly before departure and there is no replacement plan, or if a sudden failure occurs during train operation and affects normal operation, it is often necessary to force the relay to engage. In this case, the time to deal with the fault is limited, and the time cannot be too long, so as not to affect the normal operation of the train.
[0003] In addition, the tooling for forced suction operation should be easy for train drivers to carry so that the operation can be carried out quickly and accurately. Existing emergency response plans often temporarily use other available tools or manually operate the forced closing button of the relay to force the relay armature to move and the contacts to close. However, since there is no dedicated tooling, although forced suction can be achieved, it cannot be completed accurately in a short time or requires continuous manual operation, which poses certain delays and safety risks. At present, a forced suction tooling for relays is needed.
[0004] There is a patent application with application number 202420005336.6 entitled "A Strong-Attracting Fixture for a Relay". The device includes: a functional unit, a support unit, and a fixing unit. The functional unit is connected to the support unit, and the support unit is connected to the fixing unit. The functional unit includes a strong-attracting contact, the support unit includes a support base, and the fixing unit includes a pressing post and a fixing clip. The pressing post is connected to the fixing clip through the support base.
[0005] However, the above solution has a wide range of applications and can only be applied to 3TH and 3RH type relays. For other types of relays, tools or manual operation of the relay's forced engagement button are still required to force the relay's armature to move and make the contacts engage. Utility Model Content
[0006] The purpose of this invention is to solve the above problems and provide a relay forced engagement fixture that can be applied to the forced engagement of different relays and has a wide range of applications.
[0007] The technical solution adopted by this utility model to solve its technical problem is:
[0008] A relay strong-actuation fixture includes a fixed plate and a movable plate disposed on the fixed plate and moving on the fixed plate. The lower end of the fixed plate is provided with a pressure head. One side of the fixed plate cooperates with the housing of the relay, and the movable plate is provided with positioning mechanisms that cooperate with the housing of the relay on both sides.
[0009] Furthermore, the movable plate is provided with pressing posts.
[0010] Furthermore, the fixed plate is provided with a sliding groove, and the lower end of the movable plate is provided with a slider that cooperates with the sliding groove.
[0011] Furthermore, the positioning mechanism includes elastic plates symmetrically arranged on both sides of the fixed plate, and the elastic plates are provided with positioning heads.
[0012] Furthermore, the positioning mechanism includes circular holes on both sides of the fixed plate and a support rod disposed in the circular holes and sliding within the circular holes, wherein a compression spring is provided in the circular holes.
[0013] Furthermore, the upper end of the circular hole is provided with a guide groove, and the upper end of the support rod is provided with a lever that cooperates with the guide groove.
[0014] The beneficial effects of this utility model are:
[0015] 1. This utility model includes a fixed plate and a movable plate disposed on and moving on the fixed plate. A pressure head is provided at the lower end of the fixed plate. One side of the fixed plate engages with the housing of a relay, and positioning mechanisms for engaging with the housing of the relay are provided on both sides of the movable plate. During operation, the fixed plate is placed in the groove of the relay, the pressure head contacts the manual operation button in the groove, and presses down the manual operation button. One end of the movable plate extends into the gap at the lower end of the housing at one end of the groove on the relay, and the positioning mechanisms position both ends of the fixed plate, thereby ensuring that pressing the manual operation button actuates the relay armature, causing the contacts to engage. This design is convenient for train drivers to carry, enabling quick and accurate operation, avoiding the need for manual operation of the relay contacts to forcefully engage the relay, ensuring safety while improving work efficiency. Attached Figure Description
[0016] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0018] Figure 2 This is a left view of Embodiment 1 of the present utility model;
[0019] Figure 3 This is a schematic diagram of the working state of Embodiment 1 of this utility model;
[0020] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;
[0021] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of this utility model;
[0022] Figure 6 This is a schematic diagram of the working state of Embodiment 2 of this utility model.
[0023] In the diagram: 1. Fixed plate; 2. Moving plate; 3. Pressing head; 4. Pressing column; 5. Slide groove; 6. Sliding block; 7. Elastic sheet; 8. Positioning head; 9. Support rod; 10. Guide groove; 11. Lever. Detailed Implementation
[0024] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0025] Example 1:
[0026] like Figure 1 As shown, a relay strong suction tooling includes a fixed plate 1 and a movable plate 2 disposed on the fixed plate 1 and moving on the fixed plate 1. The lower end of the fixed plate 1 is provided with a pressure head 3. One side of the fixed plate 1 cooperates with the housing of the relay, and the movable plate 2 is provided with positioning mechanisms that cooperate with the housing of the relay on both sides.
[0027] The square-shaped component that is pressed when a relay is forcibly engaged is usually called a manual operation button or a forced engagement button. Its function is to force the relay's armature to actuate and the contacts to engage by manual pressing without connecting the control circuit. It is mainly used for circuit debugging, fault diagnosis, or emergency operation to verify the proper functioning of the relay's mechanical components.
[0028] like Figure 1 , Figure 3 and Figure 4As shown, during operation, the fixing plate 1 is placed in the groove of the relay, the pressure head 3 contacts the manual operation button 12 in the groove, and presses down the manual operation button 12. One end of the moving plate 2 extends into the gap at the lower end of the housing at one end of the groove on the relay, and the two ends of the fixing plate 1 are positioned by the positioning mechanism, thereby ensuring that the pressing of the manual operation button actuates the armature of the relay, causing the contacts to engage. This ensures that after the forced engagement operation is completed, the fixture remains stable and reliable without any tilting or loosening. This provides train drivers with a convenient way to quickly handle sudden malfunctions caused by relay failures that prevent normal engagement, such as the inability to open or close vehicle doors or tow trains, thus ensuring the normal operation of urban rail transit. It is also convenient for train drivers to carry, allowing for quick and accurate operation, avoiding the need for manual operation of the relay contacts to forcefully engage the relay, ensuring safety while improving work efficiency.
[0029] like Figure 1 As shown, the movable plate 2 is provided with a pressing column 4.
[0030] like Figure 1 As shown, the fixed plate 1 is provided with a sliding groove 5, and the lower end of the movable plate 2 is provided with a slider 6 that cooperates with the sliding groove 5. The movable plate 2 is guided to move by the slider 6 and the sliding groove 5.
[0031] like Figure 2 As shown, the positioning mechanism includes elastic plates 7 symmetrically arranged on both sides of the fixed plate 1. Each elastic plate 7 has a positioning head 8, which engages with the lower ends of the housings on both sides of the relay groove. When the fixed plate 1 is placed into the relay groove, the side walls of the relay groove contact the positioning head 8, causing the elastic plate 7 to deform until the positioning head 8 penetrates into the gap between the lower ends of the housings on both sides of the relay groove, thus achieving the installation of the fixed plate 1. For disassembly, the elastic plate is pried inwards, the positioning head 8 separates, and the fixed plate 1 can be removed.
[0032] Example 2:
[0033] like Figure 5 and Figure 6 As shown, the positioning mechanism includes circular holes on both sides of the fixing plate 1 and a support rod 9 disposed within the circular holes and sliding within them. A compression spring is provided within each circular hole, with one outer end of the compression spring contacting the support rod 9 and one inner end of the compression spring contacting the inner wall of the circular hole. After the fixing plate 1 is placed into the groove of the relay, the support rod 9 is supported on the inner wall of the groove of the relay under the action of the compression spring, thereby realizing the installation of the fixing plate 1.
[0034] The upper end of the circular hole is provided with a guide groove 10, and the upper end of the support rod 9 is provided with a lever 11 that cooperates with the guide groove 10. By moving the support rod 9 with the lever, it is convenient to install and disassemble the fixing plate 1.
[0035] The rest of the structure is the same as in Example 1.
[0036] In the description of this utility model, it should be noted that the terms "left", "right", "up", "down", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A relay strong-actuation fixture, characterized in that, It includes a fixed plate (1) and a movable plate (2) disposed on the fixed plate (1) and moving on the fixed plate (1). The lower end of the fixed plate (1) is provided with a pressure head (3). One side of the fixed plate (1) cooperates with the housing of the relay, and the two sides of the movable plate (2) are provided with positioning mechanisms that cooperate with the housing of the relay.
2. The relay strong-actuation fixture as described in claim 1, characterized in that, The movable plate (2) is provided with a pressing column (4).
3. The relay strong-actuation fixture as described in claim 1, characterized in that, The fixed plate (1) is provided with a sliding groove (5), and the lower end of the movable plate (2) is provided with a slider (6) that cooperates with the sliding groove (5).
4. The relay strong-actuation fixture as described in claim 1, characterized in that, The positioning mechanism includes elastic plates (7) symmetrically arranged on both sides of the fixed plate (1), and the elastic plates (7) are provided with positioning heads (8).
5. The relay strong-actuation fixture as described in claim 1, characterized in that, The positioning mechanism includes circular holes on both sides of the fixed plate (1) and a support rod (9) that is disposed in the circular holes and slides within the circular holes. A compression spring is provided in the circular holes.
6. The relay strong-actuation fixture as described in claim 5, characterized in that, The upper end of the circular hole is provided with a guide groove (10), and the upper end of the support rod (9) is provided with a lever (11) that cooperates with the guide groove (10).