An intermediate relay performance test self-adapting interface device
By designing an adapter interface device, the problem of interface mismatch in intermediate relay testing was solved, enabling efficient and safe performance testing and reducing costs.
Patent Information
- Application Number
- CN202521369108.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-01
- Publication Date
- 2026-06-23
- Estimated Expiration
- 2035-07-01
AI Technical Summary
In the existing technology, during the performance testing of intermediate relays, the dedicated interface device cannot be matched one by one, resulting in accidental electric shock and short circuit of contacts, which leads to low testing efficiency and high cost.
A self-adaptive interface device for testing the performance of intermediate relays was designed. It adopts a hollowed-out cuboid conductive body and a V-shaped elastic metal sheet, combined with a protective shell and symmetrical terminals, to provide stable connection and insulation protection, and adapt to relay pins of different sizes and shapes.
It improves the efficiency of performance testing, reduces testing costs, avoids accidental electric shock and short circuits, and ensures the stability and insulation of the connection.
Smart Images
Figure CN224399459U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of intermediate relay performance testing technology, and specifically to an intermediate relay performance testing self-adaptive interface device. Background Technology
[0002] As the core hub between control logic and actuators, the performance of intermediate relays directly determines the safety and stability of equipment operation. When selecting intermediate relays, the main considerations are that the rated voltage and current of the contacts should be equal to or greater than the voltage and current of the connected circuit, the contact type and number should meet the circuit requirements, and the winding voltage should be the same as the voltage of the connected circuit.
[0003] An intermediate relay is essentially a voltage relay, but it has a larger number of contacts and a smaller capacity; it is an electrical device used as a control switch. The electromagnetic coil of an intermediate relay can be powered by either DC or AC. In relay protection and automatic control systems, it is used to expand the number of control contacts and increase their capacity. In control circuits, it is used to transmit signals (simultaneously transmitting signals to several control elements) and to control multiple lines simultaneously. Important relays bear critical functions such as trip command transmission and equipment interlocking control; performance testing is a core guarantee for maintaining the reliability of the entire plant's automation chain. Summary of the Invention
[0004] This invention addresses the shortcomings of existing technologies by providing a self-adaptive interface device for testing the performance of intermediate relays. This device features a simple structure, strong insulation, good portability, and versatility. It solves the problem that dedicated interface devices cannot be matched to all intermediate relays during relay performance testing. This effectively avoids accidental electric shocks and contact short circuits, improves performance testing efficiency, and reduces testing costs.
[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions:
[0006] A self-adaptive interface device for testing the performance of an intermediate relay includes a conductor, a protective shell fitted onto the conductor, an external wire connected to the rear end of the protective shell, the conductor being a hollow cuboid structure, a set of V-shaped elastic metal sheets embedded in the conductor in the front-to-back direction, symmetrical terminals for connecting the external wires between the V-shaped elastic metal sheets and the external wires, and a set of V-shaped elastic metal sheets embedded in the conductor in the left-to-right direction.
[0007] The conductor has a hollowed-out cuboid structure, which provides space for the V-shaped elastic metal sheet and V-shaped elastic metal sheet embedded inside the conductor. At the same time, the hollowed-out part also facilitates heat dissipation or observation of the internal connection.
[0008] The V-shaped flexible metal tabs in the forward and backward directions allow it to adapt to the pins or contacts of relays under test of different sizes or shapes, providing better contact force or a more reliable connection. These metal tabs are responsible for contacting the relay at the front end.
[0009] The V-shaped flexible metal strips in the left and right directions are used to provide additional contact points or clamping force on the sides, further ensuring the stability and reliability of the connection, or to contact any pins that may be on the side of the relay.
[0010] Symmetrical terminals are located at the rear end of a conductor and are used to reliably connect signals or power received by the conductor to external test equipment or wires. The symmetrical design may mean they can flexibly connect wires of different polarities.
[0011] The protective outer shell tightly wraps around the conductor, providing physical protection to prevent damage to the conductor, and also serves as insulation.
[0012] Preferably, the protective housing is provided with a snap-on top cover with a through-hole for the external wire. The snap-on top cover connects to the external wire through the through-hole, meaning that the wire can be inserted from the side or a specific direction and secured by the snap-on design to prevent loosening or accidental removal.
[0013] Preferably, each of the V-shaped elastic metal sheets has two symmetrically distributed protruding auxiliary contacts. Adding auxiliary contacts to the V-shaped elastic metal sheet increases the number or area of contact points, improving contact stability and signal transmission reliability. The symmetrical distribution helps to distribute force evenly, avoiding excessive pressure at a single point of contact.
[0014] Preferably, the conductor is coated with an insulating coating.
[0015] Preferably, the protective outer shell has a cuboid frame with a medium-circle shape at the middle and bottom.
[0016] This invention can achieve the following effects:
[0017] This invention provides a self-adaptive interface device for testing the performance of intermediate relays. Compared with existing technologies, it features a simple structure, strong insulation, good portability, and versatility. It solves the problem that dedicated interface devices cannot be matched to all intermediate relays during relay performance testing. It effectively avoids accidental electric shock and contact short circuits, improves performance testing efficiency, and reduces testing costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a top view of the structural cross-section of this utility model.
[0020] Figure 3 This is a side view of the structural cross-section of this utility model.
[0021] Figure 4 This is a schematic diagram of the conductor in this utility model.
[0022] Figure 5 This is a cross-sectional view of the conductor in this utility model.
[0023] Figure 6 This is a schematic diagram of the connection structure between the snap-on top cover and the external wire in this utility model.
[0024] Figure 7 This is a cross-sectional view of the protective shell in this utility model.
[0025] In the diagram: 1. Protective casing; 2. Top cover with bayonet; 3. External wire; 4. Conductor; 5. V-shaped elastic metal sheet; 6. V-shaped elastic metal sheet; 7. Insulating coating; 8. Symmetrical terminals. Detailed Implementation
[0026] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.
[0027] Example: Figure 1-7 As shown, a self-adaptive interface device for testing the performance of an intermediate relay includes a conductor 4, the outer layer of which is coated with an insulating coating 7. V-shaped elastic metal sheets 5 are connected to the front and rear of the conductor 4 body. Each V-shaped elastic metal sheet 5 has two symmetrically distributed protruding auxiliary contacts 9. V-shaped elastic metal sheets 6 are connected to the left and right sides of the conductor 4 body. Symmetrical terminals 8 on the upper part of the conductor 4 body are connected to external wires 3. The conductor 4 is fixed inside a protective housing 1. The protective housing 1 is a cuboid with a circular frame in the middle and bottom. The external wires 3 pass through the wire holes of a top cover with a bayonet 2 to connect to the testing equipment. The top cover with a bayonet 2 is fixed to the top of the protective housing 1.
[0028] In summary, this self-adaptive interface device for intermediate relay performance testing features simple structure, strong insulation, good portability, and versatility. It solves the problem of dedicated interface devices failing to match intermediate relays one-to-one during relay performance testing. It effectively avoids accidental electric shock and contact short circuits, improves performance testing efficiency, and reduces testing costs.
[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0030] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.
Claims
1. A self-adaptive interface device for testing the performance of intermediate relays, characterized in that: The device includes a conductor (4), a protective shell (1) that is fitted onto the conductor (4), a protective shell (1) that is connected to an external wire (3) at the rear end of the protective shell (1), the conductor (4) is a hollow cuboid structure, a set of V-shaped elastic metal sheets (5) are embedded in the conductor (4) in the front-to-back direction, a symmetrical terminal block (8) connected to the external wire (3) is provided between the V-shaped elastic metal sheet (5) and the external wire (3), and a set of V-shaped elastic metal sheets (6) are embedded in the conductor (4) in the left-to-right direction.
2. The self-adaptive interface device for testing the performance of an intermediate relay according to claim 1, characterized in that: The protective shell (1) and the external wire (3) are provided with a top cover (2) with a slotted opening that allows the external wire (3) to pass through with a wire hole.
3. The self-adaptive interface device for testing the performance of an intermediate relay according to claim 1, characterized in that: Each of the V-shaped elastic irregular metal sheets (5) is provided with two symmetrically distributed protruding auxiliary contacts (9).
4. The self-adaptive interface device for testing the performance of an intermediate relay according to claim 1, characterized in that: The conductor (4) is coated with an insulating coating (7).
5. The self-adaptive interface device for testing the performance of an intermediate relay according to claim 1, characterized in that: The protective shell (1) has a cuboid frame with a medium-circle cuboid border at the middle and bottom.