Relay moving contact structure with connecting structure
By introducing a connecting groove, a limiting block, and a threaded ring into the structure of the relay moving contact, the problem of loose moving contact connection is solved, a stable connection is achieved, and the reliability of the relay is improved.
Patent Information
- Application Number
- CN202423290506.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The existing relay moving contact has a simple connection structure, which makes it prone to loosening after long-term use, affecting the stability of the relay.
The design incorporates a connecting groove between the contact rod and the moving contact, combined with the compression and locking of the limiting block and the threaded ring, and the insertion of bolts to form a stable connection structure.
This achieves a stable connection between the moving contact and the contact rod, avoiding the problem of loosening after long-term use and ensuring the reliability of the relay.
Smart Images
Figure CN223871413U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to relay movable contact field, concretely relates to a relay movable contact structure with connecting structure. BACKGROUND
[0002] The relay movable contact is the important component part of relay, it is responsible for the circuit connection or disconnection when the relay is powered on or powered off, the relay movable contact is usually made of sheet metal, has certain elasticity and conductivity, in the relay, movable contact corresponds with static contact, the contact rod is the structure for supporting and fixing movable contact in the switch, usually is made of the material with good conductivity, such as copper or steel, when installing movable contact, need to connect and fix it with the contact rod, however, the common connecting mode adopts the screw bolt mode and directly carries out screw connection, the movable contact after installation is located on the outer wall of the contact rod, because the connecting structure between the two is relatively single, thereby can cause the connection slack between the two after a long time, and further causes certain influence to the use of relay, for this, the utility model provides a relay movable contact structure with connecting structure. SUMMARY
[0003] In view of the problems existing in the connecting structure of the above-mentioned relay movable contact, the utility model is provided.
[0004] Therefore, the utility model aims at providing a relay movable contact structure with connecting structure, which solves the problems of single movable contact installation structure and looseness after long-term use.
[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:
[0006] A relay movable contact structure with connecting structure, including contact rod and movable contact, the right end of contact rod is provided with the connection groove that is suitable for the size of movable contact, one end of movable contact is inserted into the connection groove, the top and bottom of contact rod are provided with the through hole that is communicated with the connection groove, the fixed shaft is fixedly installed between the left end of two through holes, the limiting block with water drop cross section is rotatably sleeved on two fixed shafts, the bottom of movable contact is provided with the limiting groove, the large size end of two limiting blocks can be engaged in two limiting grooves on movable contact, the external thread of contact rod is sleeved with the thread ring, the bolt is inserted through the thread ring, contact rod and movable contact.
[0007] Preferably, when the thread ring is sleeved at the through hole of the outer wall of contact rod, the inner wall of thread ring extrudes limiting block, so that one end of limiting block is engaged with the limiting groove on movable contact.
[0008] Preferably, the end of the moving contact located in the connecting groove is provided with a third through hole, the sidewall of the contact rod is provided with a first through hole penetrating the connecting groove, the sidewall of the threaded ring is provided with a second through hole penetrating up and down, and the bolt is sequentially inserted and connected between the second through hole, the first through hole and the third through hole.
[0009] Preferably, torsional springs are arranged at the connection between the two fixing shafts and the corresponding limiting blocks.
[0010] Preferably, the end of the moving contact away from the contact rod is provided in a bent shape, and a contact point is fixedly installed at the bottom of the bending part of the moving contact.
[0011] Preferably, the first through hole and the third through hole are both provided in a circular shape, and the second through hole is provided in an elliptical shape.
[0012] In the above technical solution, the technical effects and advantages of the utility model are provided:
[0013] By applying extrusion force on the two limiting blocks through the threaded ring, the two limiting blocks are clamped in the limiting grooves at the top and bottom of the moving contact, and then the bolt is inserted and connected, so that the stable connection between the moving contact and the contact rod can be achieved, and the connection will not be loose after long-term use. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments or prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the connection between the contact rod and the moving contact of the utility model;
[0017] Figure 3 It is a schematic diagram of the cross-sectional structure of the connection between the contact rod and the limiting block of the utility model;
[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the contact rod of the utility model;
[0019] Figure 5 It is a schematic diagram of the structure of the moving contact of the utility model;
[0020] Figure 6 It is a schematic diagram of the structure of the threaded ring of the utility model.
[0021] Explanation of reference signs:
[0022] 1, contact rod; 2, connecting groove; 3, moving contact; 4, contact point; 5, through hole; 6, limiting block; 7, limiting groove; 8, first through hole; 9, threaded ring; 10, second through hole; 11, third through hole; 12, bolt. DETAILED DESCRIPTION
[0023] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.
[0024] The utility model provides a kind of relay moving contact structure with connecting structure as shown in Figures 1-6 The utility model provides a kind of relay moving contact structure with connecting structure as shown in Figure 1, including contact rod 1 and moving contact 3, the right end of contact rod 1 is provided with the connecting groove 2 of size compatible with moving contact 3, and the one end of moving contact 3 is inserted in connecting groove 2, and the top and bottom of contact rod 1 are provided with the through hole 5 communicated with connecting groove 2, and the left end between two through holes 5 is fixedly installed with fixed shaft, and the limiting block 6 with cross section of water drop shape is rotatably sleeved on two fixed shafts, and the bottom of moving contact 3 is provided with limiting groove 7, and the large size end of two limiting blocks 6 can be engaged in two limiting grooves 7 on moving contact 3, and the outside of contact rod 1 is threaded with threaded ring 9, and bolt 12 is inserted through between threaded ring 9, contact rod 1 and moving contact 3, by inserting one end of moving contact 3 in connecting groove 2, and screwing threaded ring 9 to make it move to the position of through hole 5, the inner wall of threaded ring 9 will exert extrusion force on the outer wall of limiting block 6, so that limiting block 6 rotates in through hole 5 with fixed shaft as center, so that the side wall of limiting block 6 is engaged in limiting groove 7 on moving contact 3, and then the connection of threaded ring 9, contact rod 1 and moving contact 3 is completed using bolt 12.
[0025] In order for limiting block 6 to limit moving contact 3, as shown in Figure 2 And Figure 3 When threaded ring 9 is sleeved at the through hole 5 of the outer wall of contact rod 1, the inner wall of threaded ring 9 extrudes limiting block 6 so that one end thereof is engaged with limiting groove 7 on moving contact 3, and under the engagement of limiting block 6 and limiting groove 7, one end of moving contact 3 can be stably limited in connecting groove 2 of one end of contact rod 1.
[0026] In order to further fix the position of moving contact 3 inserted in connecting groove 2, as shown in Figures 2-6As shown, the moving contact 3 has a third through hole 11 at one end located in the connecting groove 2, the side wall of the contact rod 1 has a first through hole 8 penetrating the connecting groove 2, and the side wall of the threaded ring 9 has a second through hole 10 penetrating vertically. The bolt 12 is inserted sequentially between the second through hole 10, the first through hole 8 and the third through hole 11. In this way, under the action of the bolt 12, one end of the moving contact 3 can be stably inserted into the connecting groove 2, and the position of the threaded ring 9 on the contact rod 1 can also be fixed, so that the threaded ring 9 can always stably press against the two limiting blocks 6.
[0027] In order for the limit block 6 to be able to reset without the action of external force, such as Figure 2 and Figure 3 As shown, torsion springs are provided at the connection points between the two fixed shafts and the corresponding limiting blocks 6. In this way, when no pressure is applied to the limiting blocks 6, the elastic force released by the torsion springs can reset the threaded ring 9.
[0028] To facilitate the connection between the moving contact 3 and the corresponding stationary contact, such as Figure 1 and Figure 5 As shown, the end of the moving contact 3 away from the contact rod 1 is bent, and a contact point 4 is fixedly installed at the bottom of the bent part of the moving contact 3, which facilitates the docking of the moving contact 3 with the stationary contact.
[0029] Finally, in order to align the second through hole 10 on the threaded ring 9 with the first through hole 8 on the contact rod 1, as follows: Figure 2 and Figure 6 As shown, the first through hole 8 and the third through hole 11 are both circular, and the second through hole 10 is elliptical. This allows the alignment range between the second through hole 10 and the first through hole 8 to be expanded when the threaded ring 9 is screwed.
[0030] When installing the moving contact 3, one end of the moving contact 3 is inserted into the connecting groove 2, and the threaded ring 9 on the contact rod 1 is rotated to move it to the through-hole 5. The inner wall of the threaded ring 9 will apply a squeezing force to the outer wall of the limiting block 6, causing the limiting block 6 to rotate in the through-hole 5 around the fixed axis. This allows the side wall of the limiting block 6 to engage in the corresponding limiting groove 7 on the moving contact 3. Then, the second through hole 10 on the threaded ring 9 is aligned with the first through hole 8 on the contact rod 1. Finally, the bolt 12 passes through the second through hole 10 on the threaded ring 9, the first through hole 8 on the contact rod 1, and the third through hole 11 on the moving contact 3 in sequence. Under the action of the bolt 12, the threaded ring 9 can no longer rotate on the contact rod 1, thus allowing the inner wall of the threaded ring 9 to always squeeze the limiting block 6.
[0031] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A relay moving contact structure with a connection structure, comprising a contact rod (1) and a moving contact (3), characterized in that: The right end of the contact rod (1) is provided with a connecting groove (2) that matches the size of the moving contact (3). One end of the moving contact (3) is inserted into the connecting groove (2). The top and bottom of the contact rod (1) are provided with openings (5) that communicate with the connecting groove (2). Fixed shafts are fixedly installed between the left ends of the two openings (5). Limiting blocks (6) with teardrop-shaped cross sections are rotatably sleeved on the two fixed shafts. Limiting grooves (7) are provided at the bottom and bottom of the moving contact (3). The large ends of the two limiting blocks (6) can be engaged in the two limiting grooves (7) on the moving contact (3). A threaded ring (9) is threaded onto the outside of the contact rod (1). A bolt (12) is inserted through the threaded ring (9), the contact rod (1), and the moving contact (3). When the threaded ring (9) is sleeved at the opening (5) on the outer wall of the contact rod (1), the threaded ring (9) The inner wall of the limiting block (6) is squeezed to make one end engage with the limiting groove (7) on the moving contact (3). The moving contact (3) is provided with a third through hole (11) at one end in the connecting groove (2). The side wall of the contact rod (1) is provided with a first through hole (8) that penetrates the connecting groove (2). The side wall of the threaded ring (9) is provided with a second through hole (10) that runs vertically through it. The bolt (12) is inserted sequentially between the second through hole (10), the first through hole (8) and the third through hole (11). The two fixed shafts are provided with torsion springs at the connection points with the corresponding limiting blocks (6). The end of the moving contact (3) away from the contact rod (1) is set to be bent. A contact point (4) is fixedly installed at the bottom of the bent part of the moving contact (3). The first through hole (8) and the third through hole (11) are both set to be circular. The second through hole (10) is set to be elliptical.