Alternating current contactor coil
By designing a support structure and a limiting device in the AC contactor coil, the problem of easy displacement of the spring is solved, ensuring the stable action of the armature and the full contact of the contacts.
Patent Information
- Application Number
- CN202420578115.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-03-04
- Estimated Expiration
- 2034-03-25
AI Technical Summary
In existing AC contactors, there is a lack of limiting and fixed connection between the spring and the armature and the coil frame, which leads to the easy displacement of the spring and the direction of the armature is offset, resulting in insufficient contact between the contacts.
An AC contactor coil is designed to achieve limiting and fixing of the spring by installing a support skirt and a support seat on the winding post and installing a slide chute and slider on the carrier plate, combining the card plate and the limit plate to prevent its offset.
It effectively avoids the deviation of the spring during compression and rebound, ensures the stable effect of the armature, and improves the contact quality of the contact points.
Smart Images
Figure CN222562572U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of AC contactors, in particular to an AC contactor coil. Background Art
[0002] AC contactor is a kind of contactor used for alternating current. It uses electromagnetic force and spring elastic force to realize the connection and disconnection of contacts. AC contactor has two working states: de-energized state (released state) and energized state (operated state). When the attraction coil is energized, the static iron core generates electromagnetic attraction, the armature is attracted, and the connecting rod connected to the armature drives the contact to move, so that the normally closed contact is disconnected and the contactor is in the energized state; when the attraction coil is de-energized, the electromagnetic attraction disappears, the armature is reopened, the normally open contact is closed, and the spring releases, all contacts are reset, and the contactor is in the de-energized state.
[0003] In the existing AC contactor, a spring is arranged between the armature and the coil (i.e., the coil frame) to push the armature back to the initial position after the coil is powered off, that is, to reset the contacts connected to the armature. However, most of the springs are movably connected to the armature and the coil frame, and lack a limit or fixed connection to the spring. As a result, when the spring is compressed or rebounded, it is easy for the spring to shift and other activities to occur, which in turn causes the direction of the spring acting on the armature to shift, making the armature less effective on the contacts, resulting in insufficient contact between the contacts. Utility Model Content
[0004] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes an AC contactor coil.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an AC contactor coil is designed, including a winding column, the winding column is a hollow cylinder with openings at both ends, support skirts are installed along the end edges of the winding column, and a powered wire is wound on the winding column, a support seat is installed on one of the support skirts, and a through groove corresponding to the opening of the winding column is opened in the middle of the support seat;
[0006] A plurality of spaced-apart bearing plates are installed on the side of the through slot, and gaps are left between adjacent bearing plates. An arc-shaped slide groove is provided on each bearing plate, and a slider slides through the slide groove. The slider is an arc-shaped plate, and a clamping plate is vertically installed on the inner side of the top of the slider.
[0007] Preferably, a limit plate is installed at the bottom of each sliding block.
[0008] Preferably, the surface of each supporting plate is a smooth surface, and an insulating layer is installed on the surface of each supporting plate.
[0009] Preferably, a U-shaped seat is installed on the top of the support seat, and two spaced support beams are installed inside the U-shaped seat, the support beams are fixed on the top surface of the support seat, and wiring terminals are installed on both sides of one end of the U-shaped seat.
[0010] Preferably, a plurality of ventilation slots arranged at intervals are provided along the side surface of the supporting skirt.
[0011] Preferably, each of the clamping plates is an "L"-shaped plate with one end away from the slider bent toward the bearing plate.
[0012] Preferably, at least one limiting block is installed on one side of each clamping plate close to the carrying plate.
[0013] The design scheme proposed by the utility model has the following beneficial effects during application:
[0014] 1. The AC contactor coil supports the spring through the bearing plate. After the spring is placed on the bearing plate, multiple arc-shaped sliders will wrap the outside of the spring, thereby limiting the spring and preventing the spring from being offset or misplaced due to its own elastic force.
[0015] 2. After the spring is placed on the bearing plate, the clamping plate will extend into the gap of the spring, thereby hooking the spring and cooperating with the sliding of the slider in the slide groove, which will not affect the normal expansion and contraction of the spring and prevent the spring from detaching from between multiple sliders when rebounding. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;
[0017] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;
[0018] Figure 3 This is a diagram of the use state of the utility model;
[0019] Figure 4 This is the diagram of the cooperation between the utility model and the spring;
[0020] Figure 5 This is a cross-sectional view of the utility model in cooperation with a spring;
[0021] Figure 6 The structure of the card board Figure 1 ;
[0022] Figure 7 The structure of the card board Figure 2 .
[0023] In the figure: 1. winding column; 2. supporting skirt; 3. supporting seat; 4. through groove; 5. bearing plate; 6. slide groove; 7. slider; 8. clamping plate; 9. limit plate; 10. U-shaped seat; 11. wiring terminal; 12. supporting beam; 13. ventilation groove; 14. limit block. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0025] Reference Figure 1-Figure 7 An AC contactor coil includes a winding post 1, which is a hollow cylinder with openings at both ends, and a current-carrying wire is wound on the winding post 1. Support skirts 2 are installed along the end edges of the winding post 1, and a plurality of ventilation slots 13 arranged at intervals are opened along the side of the support skirt 2 to ensure good ventilation inside the winding post 1 and to dissipate heat for the coil.
[0026] A support seat 3 is installed on one of the support skirts 2, a U-shaped seat 10 is installed on the top of the support seat 3, and two spaced support beams 12 are installed inside the U-shaped seat 10, the support beam 12 is fixed on the top surface of the support seat 3, and wiring terminals 11 are installed on both sides of one end of the U-shaped seat 10, the two ends of the power-carrying wire are respectively connected to the wiring terminals 11, and the wiring terminals 11 are connected to an external power supply to power the coil.
[0027] It should be noted that if Figure 3 and Figure 5 As shown, an iron core (such as Figure 3 The iron core is placed inside the winding column 1, and an armature (such as Figure 3 The position indicated by the arrow B in the middle), and a spring (such as Figure 3 The position indicated by arrow C in the figure).
[0028] A through slot 4 corresponding to the opening of the winding post 1 is provided in the middle of the support seat 3; a plurality of spaced supporting plates 5 are installed on the side of the through slot 4, and a gap is left between adjacent supporting plates 5. When the current-carrying wire on the winding post 1 is energized, the iron core will generate magnetic force, thereby attracting the armature to approach the iron core. At this time, the gap between the supporting plates 5 will leave sufficient moving space for the armature to approach the iron core to prevent the supporting plates 5 from blocking the movement of the armature; each supporting plate 5 is provided with an arc-shaped slide groove 6, and a slider 7 is slidably penetrated in the slide groove 6. The slider 7 is an arc-shaped plate, and a clamping plate 8 is vertically installed on the inner side of the top of the slider 7, such as Figure 4and Figure 5 As shown, when in use, the spring is first placed on the bearing plate 5, and the card plate 8 is inserted into the gap of the spring itself, so as to fix the spring on the bearing plate 5, and the slider 7 will wrap the spring, so as to limit the spring and reduce the possibility of left and right misalignment when the spring moves. When the power-carrying wire is energized and the armature moves toward the iron core, the spring will be compressed due to the movement of the armature. At this time, the spring will generate pressure on the card plate 8, and after the power-carrying wire is de-energized, the resetting of the spring will drive the armature to move in the opposite direction. At this time, the spring will also lift the card plate 8, and the action of the spring on the card plate 8 is converted into the sliding of the slider 7 in the slide groove 6, so as to ensure that the card plate 8 and the slider 7 will not affect the expansion and contraction of the spring itself while acting on the spring.
[0029] Specifically, in embodiment 1, Figure 6 As shown, each clamping plate 8 is an "L"-shaped plate with one end away from the slider 7 bent toward the bearing plate 5. When the clamping plate 8 extends into the gap of the spring, the clamping plate 8 can hook the spring, thereby achieving a better fixing effect on the spring.
[0030] Embodiment 2, as Figure 7 As shown, at least one limit block 14 is installed on one side of each card plate 8 close to the bearing plate 5. When the card plate 8 extends into the gap of the spring, the spring will be placed between the limit block 14 and the slider 7, or between two adjacent limit blocks 14, so as to limit and hook the spring, thereby achieving a better fixing effect on the spring.
[0031] In order to prevent the slider 7 from slipping out of the slide groove 6 due to excessive spring force when the armature is reset, Figure 1 and Figure 2 As shown, a limiting plate 9 is installed at the bottom of each slider 7.
[0032] Furthermore, the surface of each supporting plate 5 is a smooth surface, and an insulating layer is installed on the surface of each supporting plate 5 .
[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An AC contactor coil, comprising a winding post (1), the winding post (1) being a hollow cylinder with openings at both ends, a supporting skirt (2) being installed along the end edges of the winding post (1), and a current-carrying wire being wound around the winding post (1), characterized in that: A support seat (3) is installed on one of the support skirts (2), and a through slot (4) corresponding to the opening of the winding column (1) is opened in the middle of the support seat (3); A plurality of spaced-apart bearing plates (5) are installed on the side of the through groove (4), and gaps are left between adjacent bearing plates (5). An arc-shaped slide groove (6) is provided on each bearing plate (5), and a slider (7) is slidably passed through the slide groove (6). The slider (7) is an arc-shaped plate, and a clamping plate (8) is vertically installed on the inner side of the top of the slider (7).
2. The AC contactor coil according to claim 1, characterized in that: A limiting plate (9) is installed at the bottom of each sliding block (7).
3. The AC contactor coil according to claim 1, characterized in that: The surface of each carrier plate (5) is a smooth surface, and an insulating layer is installed on the surface of each carrier plate (5).
4. The AC contactor coil according to claim 1, characterized in that: A U-shaped seat (10) is installed on the top of the support seat (3), and two support beams (12) arranged at intervals are installed inside the U-shaped seat (10). The support beams (12) are fixed on the top surface of the support seat (3), and wiring terminals (11) are installed on both sides of one end of the U-shaped seat (10).
5. The AC contactor coil according to claim 1, characterized in that: A plurality of ventilation slots (13) arranged at intervals are provided along the side surface of the supporting skirt (2).
6. The AC contactor coil according to claim 1, characterized in that: Each of the clamping plates (8) is an "L"-shaped plate with one end away from the slider (7) bent toward the bearing plate (5).
7. The AC contactor coil according to claim 6, characterized in that: At least one limiting block (14) is installed on one side of each clamping plate (8) close to the carrying plate (5).