Structure of coil leading-out end

Abstract

The utility model relates to a structure of a coil leading-out end, which comprises a coil rack, a connecting piece is arranged on the coil rack, and a coil terminal is fixedly arranged on the connecting piece. The coil terminal is fixedly installed on the coil rack through the connecting piece, and no force is applied to the coil terminal during installation, so that scrap generated during part production is avoided, the cost is reduced, the structure is more stable, and the product reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of contactors, in particular to a structure of a coil lead-out end. BACKGROUND

[0002] A contactor is a widely used switch electric appliance, which uses electromagnetic principle to realize the on-off of the main circuit through a control circuit, and has the advantages of strong breaking current, rapid action, safe operation, frequent operation and remote control. The working principle of the contactor is that when the coil of the contactor is powered, the coil current generates a magnetic field, the generated magnetic field causes the static iron core to generate electromagnetic attraction to attract the moving iron core, and drives the moving contact piece to act, so that the moving contact piece is attracted to the static contact head to conduct the circuit.

[0003] In the existing contactor, the coil lead-out terminal of the contactor is mostly assembled by being pressed into the coil holder by riveting in the later stage, but the riveting structure makes the lead-out terminal prone to deformation and fracture during the pressing process, resulting in high scrap rate of the parts, and secondly, the riveting structure may generate metal chips during the pressing process, which are attached to the coil, affecting the voltage resistance performance of the coil and easily causing breakdown and short circuit. CONTENT OF THE INVENTION

[0004] In order to solve the above technical problems, the present application provides a structure of a coil lead-out end.

[0005] The structure of the coil lead-out end provided by the present application adopts the following technical scheme:

[0006] The structure of the coil lead-out end comprises a coil holder, a connecting piece is arranged on the coil holder, and a coil terminal is fixedly arranged on the connecting piece.

[0007] By adopting the above technical scheme, the coil terminal is fixedly installed on the coil holder through the connecting piece, and no force is applied to the coil terminal during installation, thereby avoiding the scrap of the parts during production, reducing the cost, making the structure more stable, and improving the reliability of the product.

[0008] Optionally, a receiving groove is formed in the connecting piece, and the coil terminal is inserted into the receiving groove.

[0009] By adopting the above technical scheme, the coil terminal and the connecting piece are integrally formed, which is convenient for processing.

[0010] Optionally, an installation groove is formed in the coil holder, the connecting piece is made of insulating flexible material, and the connecting piece is used for riveting in the installation groove of the coil holder.

[0011] By adopting the above technical scheme, the assembly is facilitated, the force applied to the coil terminal is avoided, the metal chips generated during the riveting process are avoided, the creepage distance is increased, and the contactor works more reliably and stably.

[0012] Optionally, the side wall of the connecting piece is provided with a mounting block, the connecting piece and the coil holder are riveted through the mounting block and the mounting groove, and a force applying surface for resisting the riveting tool is formed on the mounting block.

[0013] By adopting the above technical scheme, the riveting tool is applied force through the mounting block, installation is facilitated, and interference to the coil terminal during installation is avoided.

[0014] Optionally, a limiting groove is formed in the side wall of the connecting piece, and the limiting groove is used for resisting the side wall of the coil holder to limit the riveting depth of the connecting piece.

[0015] By adopting the above technical scheme, the riveting depth of the connecting piece is limited through the limiting groove, the structure is simple, processing is facilitated, and the limiting effect is good.

[0016] Optionally, a clamping groove is formed in the coil holder, a clamping block for being inserted into the clamping groove is slidably arranged on the connecting piece, and the connecting piece and the coil terminal are buckled connected through the clamping block and the clamping groove.

[0017] By adopting the above technical scheme, the buckle connection structure is simple and convenient to disassemble and assemble, and the connection stability is good.

[0018] Optionally, a sliding groove is formed in the outer circumferential surface of the coil holder, the clamping groove is formed in the inner wall of the sliding groove, a locking groove is formed in the connecting piece, the clamping block is slidably arranged in the locking groove, a locking elastic member is arranged between the clamping block and the bottom wall of the locking groove, and the locking elastic member is used for pushing the clamping block to move outward from the locking groove, so that the clamping block is inserted into the clamping groove.

[0019] By adopting the above technical scheme, the installer only needs to press the clamping block to make the clamping block retract into the locking groove, and then slide the connecting piece into the sliding groove. When the clamping block and the clamping groove are aligned, the clamping block is ejected from the locking groove and inserted into the clamping groove under the elastic force of the locking elastic member, so that the connecting piece and the coil holder are fixed, and the operation is convenient.

[0020] Optionally, an unlocking hole is formed in the connecting piece and communicates with the locking groove, an unlocking block is slidably arranged in the unlocking hole, an unlocking groove is formed in the clamping block, an unlocking inclined surface is formed in the inner wall of the unlocking groove and is inclined, and the unlocking inclined surface is used for resisting the sliding of the unlocking block, so as to drive the clamping block to exit the clamping groove and retract into the locking groove.

[0021] By adopting the above technical scheme, the clamping block can be retracted into the locking groove by pressing the unlocking block, the connecting piece is unlocked, and the replacement of the connecting piece is facilitated.

[0022] Optionally, the unlocking block is connected with a reset elastic member for resetting the unlocking block.

[0023] By adopting the above technical solution, the reset elastic element can not only reset the unlocking block, but also keep the unlocking block in its initial state. If the contactor vibrates during use, the reset elastic element can minimize the need to unlock the block without human intervention.

[0024] Optionally, the card block is inclined with a retraction ramp, which is used for the coil frame sidewall outside the slide groove to slide against and press the card block back into the locking groove.

[0025] By adopting the above technical solution, when installing the connector, it is only necessary to insert the connector into the slide groove. The coil frame sidewall on the outside of the slide groove will press the locking block back into the locking groove through the recovery slope, which is convenient to operate and quick to install.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. Facilitates assembly, avoids scrap during parts production, reduces costs, increases creepage distance, and makes the contactor work more reliably and stably;

[0028] 2. The connector is snapped into the coil frame for easy replacement;

[0029] 3. If the contactor vibrates during use, the reset elastic element can minimize the need for unlocking the block without human intervention. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0031] Figure 2 This is an exploded view of Embodiment 1 of this application.

[0032] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of this application.

[0033] Figure 4 It is along Figure 3 Sectional view of AA.

[0034] Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0035] Explanation of reference numerals in the attached drawings: 1. Coil frame; 11. Mounting slot; 12. Slot; 13. Slide groove; 2. Coil terminal; 3. Connector; 31. Receiving slot; 32. Locking slot; 321. Large diameter section; 322. Small diameter section; 33. Unlocking hole; 331. Receiving hole; 332. Anti-dislodgement hole; 333. Telescopic hole; 334. Through hole; 34. Limiting slot; 4. Mounting block; 41. Force application surface; 5. Slot; 51. Unlocking slot; 52. Unlocking ramp; 53. Limiting boss; 54. Retraction ramp; 6. Locking elastic element; 7. Unlocking block; 71. Limiting protrusion; 8. Reset elastic element. Detailed Implementation

[0036] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0037] Example 1:

[0038] Embodiment 1 of this application discloses a structure for a coil lead-out terminal. (Refer to...) Figure 1 and Figure 2 The device includes a coil frame 1, coil terminals 2, and connectors 3. Connectors 3 are made of nylon and have a receiving groove 31. The coil terminals 2 are inserted into the receiving groove 31. During production, the coil terminals 2 are fixed to the connectors 3 by injection molding, naturally forming the receiving groove 31 for the coil terminals 2 to be inserted. The coil frame 1 has a mounting groove 11 at its end, which extends along the length of the coil frame 1. The connectors 3 are riveted into the mounting groove 11 to fix the coil terminals 2 on the coil frame 1.

[0039] Reference Figure 2 A mounting block 4 is integrally formed on the side wall of the connector 3. The end of the mounting block 4 near the coil frame 1 is flush with the end of the connector 3 near the coil frame 1. A force-applying surface 41 is formed on the end of the mounting block 4 away from the coil frame 1 for the riveting tool to abut against. A limiting groove 34 is formed on the side wall of the end of the connector 3 that is inserted into the mounting groove 11. The limiting groove 34 is used to separate the end of the connector 3 that is inserted into the mounting groove 11 from the mounting block 4. There are two mounting grooves 11, which are respectively provided corresponding to the ends of the mounting block 4 and the connector 3. When the mounting block 4 and the end of the connector 3 are riveted in the mounting groove 11, the side wall of the limiting groove 34 abuts against the side wall of the coil frame 1 to limit the riveting depth of the connector 3.

[0040] The assembly principle of the structure of the coil lead end in Embodiment 1 of this application is as follows: first, the coil terminal 2 is integrally formed in the receiving groove 31 by injection molding process, and then the connector 3 is riveted to the mounting groove 11 on the coil frame 1 by riveting tool.

[0041] Example 2:

[0042] ReferenceFigure 3 , Figure 4 and Figure 5 Unlike embodiment 1, in this embodiment, a sliding groove 13 is provided on the axial end side wall of the coil frame 1. The sliding groove 13 extends axially along the coil frame 1 and penetrates the outer circumferential surface of the coil frame 1 radially outward. A slot 12 extending circumferentially toward the coil frame 1 is provided on the inner wall of the sliding groove 13. A locking block 5 is slidably installed on the connector 3. The connector 3 and the coil frame 1 are connected by the locking block 5 and the slot 12.

[0043] Reference Figure 4 and Figure 5 A locking groove 32 is provided on the side wall of the connector 3. The locking groove 32 extends radially along the coil frame 1. The locking groove 32 includes a large diameter section 321 and a small diameter section 322 that are connected to each other. The small diameter section 322 is located on the side of the large diameter section 321 away from the bottom wall of the locking groove 32. The small diameter section 322 is connected to the outside. The locking block 5 is slidably installed in the large diameter section 321 and the small diameter section 322. A locking elastic member 6 is pressed between the locking block 5 and the bottom wall of the locking groove 32. The locking elastic member 6 extends and retracts in the direction that pushes the locking block 5 out of the small diameter section 322. The locking elastic member 6 is used to push the locking block 5 into the locking groove 12.

[0044] Reference Figure 5 A limiting boss 53 is integrally formed on the locking block 5. The cross-sectional dimension of the limiting boss 53 is smaller than the opening surface dimension of the small diameter section 322. The cross-sectional dimension of the limiting boss 53 is equal to the opening surface dimension of the large diameter section 321. The limiting boss 53 slides within the large diameter section 321 and slides against the inner wall of the large diameter section 321 to guide the movement of the locking block 5. The limiting boss 53 is used to abut against the side wall of the large diameter section 321 on the outer periphery of the small diameter section 322 to prevent the locking block 5 from falling out of the locking groove 32.

[0045] Reference Figure 5 The end of the locking block 5 away from the bottom wall of the locking groove 32 is inclined to form a retraction slope 54. The end of the connector 3 that first slides into the slide groove 13 is set as the front end. The retraction slope 54 is inclined in the direction that is further away from the bottom wall of the locking groove 32 and further away from the front end of the connector 3. The retraction slope 54 is used for the side wall of the coil frame 1 outside the slide groove 13 to slide against and press the locking block 5 back into the locking groove 32.

[0046] Reference Figure 1The front side wall of the connector 3 has an unlocking hole 33 that communicates with the lock groove 32. The unlocking hole 33 extends in the front-to-back direction. An unlocking block 7 is slidably installed in the unlocking hole 33. The unlocking hole 33 includes a receiving hole 331, an anti-detachment hole 332, a telescopic hole 333, and a through hole 334, which are distributed sequentially from front to back and are interconnected. The opening size of the receiving hole 331 is equal to the opening size of the telescopic hole 333, and the opening size of the anti-detachment hole 332 is equal to the opening size of the through hole 334. The opening size of the receiving hole 331 is larger than the opening size of the anti-detachment hole 332. The rear end of the unlocking block 7 is used to extend out of the through hole 334 to enter the large-diameter section 321. The locking block 5 has an unlocking groove 51 on its side wall facing the unlocking hole 33. The inner wall of the unlocking groove 51 has an unlocking slope 52. The unlocking slope 52 is inclined in a direction that is further away from the unlocking hole 33 the closer it is to the small diameter section 322. The unlocking slope 52 allows the rear end of the unlocking block 7 to extend out of the through hole 334 to abut and slide, so as to drive the locking block 5 back into the locking groove 32.

[0047] Reference Figure 5 An integrally formed limiting protrusion 71 is formed on the unlocking block 7. The cross-sectional dimensions of the limiting protrusion 71 are equal to the opening dimensions of the telescopic hole 333. The limiting protrusion 71 slides against the inner wall of the telescopic hole 333 to guide the movement of the unlocking block 7. The limiting protrusion 71 abuts against the side wall of the telescopic hole 333 on the outer periphery of the anti-disengagement hole 332 to prevent the unlocking block 7 from disengaging from the unlocking hole 33. A reset elastic member 8 is sleeved on the unlocking block 7. The reset elastic member 8 is pressed between the limiting protrusion 71 and the bottom wall of the telescopic hole 333. The reset elastic member 8 extends and retracts in the direction that pushes the unlocking block 7 away from the lock groove 32. The end of the unlocking block 7 away from the lock groove 32 is the operating end. When the unlocking block 7 is in the initial state, the operating end of the unlocking block 7 is flush with the side wall of the connecting member 3 on the outer periphery of the receiving hole 331. The receiving hole 331 accommodates the operating end of the unlocking block 7, which prevents accidental activation.

[0048] The assembly principle of the coil lead-out structure in Embodiment 2 of this application is as follows: When installing the coil terminal 2, the coil terminal 2 is first integrally molded into the receiving groove 31 by injection molding. Then, the connector 3 is slid into the slide groove 13 from front to back. The side wall of the coil frame 1 on the outside of the slide groove 13 abuts against the retraction slope 54 on the locking block 5, pressing the locking block 5 back into the locking groove 32 until the connector 3 slides until the locking block 5 is aligned with the locking groove 12. The locking elastic member 6 pushes the locking block 5 into the locking groove 12. When the coil terminal 2 needs to be replaced, the worker presses the unlocking block 7. The end of the unlocking block 7 abuts against the unlocking slope 52 of the locking block 5, causing the locking block 5 to retract into the locking groove 32. The locking block 5 disengages from the locking groove 12, and the worker can take the connector 3 out of the slide groove 13.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A structure for a coil lead-out terminal, characterized in that: It includes a coil frame (1), on which a connector (3) is provided, and on which a coil terminal (2) is fixedly provided.

2. The structure of the coil lead-out terminal according to claim 1, characterized in that: The connector (3) has a receiving groove (31) and the coil terminal (2) is inserted into the receiving groove (31).

3. The structure of the coil lead-out terminal according to claim 1, characterized in that: The coil frame (1) has an installation groove (11), and the connector (3) is made of insulating flexible material. The connector (3) is used to be riveted into the installation groove (11) of the coil frame (1).

4. The structure of the coil lead-out terminal according to claim 3, characterized in that: The connector (3) has a mounting block (4) on its side wall. The connector (3) and the coil frame (1) are riveted together by the mounting block (4) and the mounting groove (11). The mounting block (4) has a force-applying surface (41) for the riveting tool to abut against.

5. The structure of the coil lead-out terminal according to claim 4, characterized in that: A limiting groove (34) is provided on the side wall of the connector (3). The limiting groove (34) is used to abut against the side wall of the coil frame (1) to limit the riveting depth of the connector (3).

6. The structure of the coil lead-out terminal according to claim 1, characterized in that: The coil frame (1) has a slot (12) and the connector (3) has a slidable block (5) for inserting into the slot (12). The connector (3) and the coil terminal (2) are connected by the block (5) and the slot (12).

7. The structure of the coil lead-out terminal according to claim 6, characterized in that: The outer circumferential surface of the coil frame (1) is provided with a sliding groove (13), the slot (12) is provided on the inner wall of the sliding groove (13), the connector (3) is provided with a locking groove (32), the block (5) is slidably disposed in the locking groove (32), a locking elastic member (6) is provided between the block (5) and the bottom wall of the locking groove (32), the locking elastic member (6) is used to push the block (5) to move out of the locking groove (32) so that the block (5) is inserted into the slot (12).

8. The structure of the coil lead-out terminal according to claim 7, characterized in that: The connector (3) has an unlocking hole (33) communicating with the lock groove (32). An unlocking block (7) is slidably disposed in the unlocking hole (33). An unlocking groove (51) is provided on the locking block (5). An unlocking inclined surface (52) is formed on the inner wall of the unlocking groove (51). The unlocking inclined surface (52) is used for the unlocking block (7) to slide against it, so as to drive the locking block (5) out of the locking groove (12) and back into the lock groove (32).

9. The structure of the coil lead-out terminal according to claim 8, characterized in that: The unlocking block (7) is connected to a reset elastic element (8) for resetting the unlocking block (7).

10. The structure of the coil lead-out terminal according to claim 7, characterized in that: The locking block (5) has an inclined recovery slope (54) formed on it. The recovery slope (54) is used for the side wall of the coil frame (1) outside the slide groove (13) to slide against it, so as to press the locking block (5) back into the locking groove (32).

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