CN220367857U - Contactor assembly and contactor - Google Patents

Abstract

A contactor assembly, comprising: a housing; a stationary core fixed to the housing; a coil winding including a winding bracket fixed to the case and a coil wound around the winding bracket; the movable iron core moves towards the static iron core when the coil is electrified to generate a magnetic field, and moves away from the static iron core when the coil is deenergized to not generate the magnetic field; a PCBA electrically connected with the coil; wherein, there is the clearance between quiet iron core and the coil winding for when moving iron core and quiet iron core collision make quiet iron core vibrate, quiet iron core keeps not contacting with the coil winding at least partially.

Description

Contactor assembly and contactor

Technical Field

The present utility model relates to a contactor assembly and a contactor, and more particularly, to a contactor assembly and a contactor having a shock absorbing function.

Background

The contactor controls whether the circuit is conducted or not through closing and opening of a disconnecting link, for example, wherein the disconnecting link can be connected with the movable iron core, so that the movable iron core can drive the disconnecting link to move. Specifically, when the coil is energized to generate a magnetic field around, the movable iron core is attracted by the stationary iron core to move toward the stationary iron core, and when the coil is de-energized to no longer generate a magnetic field, the movable iron core is acted by a restoring force (e.g., a restoring force generated by a spring) to move away from the stationary iron core, thereby realizing control of movement of the knife switch and further realizing control of the on/off state of the knife switch.

However, when the movable iron core moves toward the stationary iron core, the movable iron core collides with the stationary iron core, the collision causes the stationary iron core to vibrate, and the vibration of the stationary iron core is transmitted to the coil winding, causing the coil winding to vibrate, which increases wear of the coil winding and reduces the service life of the coil winding. In addition, in the case of coil windings electrically connected to the PCBA, vibration of the coil windings may continue to be transferred to the PCBA, causing the PCBA to vibrate, which may affect the stability of the solder joints on the PCBA.

Accordingly, it is desirable to provide a contactor assembly that reduces or even avoids vibration of the coil windings and PCBA due to the impact of the plunger core colliding with the stationary core.

Disclosure of Invention

According to a first aspect of the present utility model, there is provided a contactor assembly comprising: a housing; a stationary core fixed to the housing; a coil winding including a winding bracket fixed to the case and a coil wound around the winding bracket; the movable iron core moves towards the static iron core when the coil is electrified to generate a magnetic field, and moves away from the static iron core when the coil is deenergized to not generate the magnetic field; a PCBA electrically connected with the coil; wherein, there is the clearance between quiet iron core and the coil winding for when moving iron core and quiet iron core collision make quiet iron core vibrate, quiet iron core keeps not contacting with the coil winding at least partially.

According to the scheme, because a gap exists between the static iron core and the coil, when the movable iron core collides with the static iron core to enable the static iron core to vibrate, the static iron core at least partially keeps not to be in contact with the coil winding, so that the vibration of the static iron core is reduced or even avoided from being transmitted to the coil winding and the PCBA, the service life of the coil winding is prolonged, and the stability of the PCBA is improved.

In some aspects, the stationary core may be hollow and have a rectangular profile, the coil being disposed in a hollow region of the stationary core, the stationary core being provided with an opening on a first side facing the moving core, the stationary core being adjacent the housing on a second side facing away from the moving core.

In some aspects, a gap exists between the first side of the stationary core and the coil winding such that the first side of the stationary core remains out of contact with the coil winding when the movable core collides with the stationary core to vibrate the stationary core.

In some aspects, a gap exists between the second side of the stationary core and the coil winding such that the second side of the stationary core remains out of contact with the coil winding when the movable core collides with the stationary core to vibrate the stationary core.

In some aspects, a gap exists between the lateral sides of the stationary core and the coil windings such that the lateral sides of the stationary core remain out of contact with the coil windings when the stationary core vibrates due to a collision of the movable core with the stationary core.

According to the three schemes, gaps are formed on the side surfaces of the static iron core, which are in contact with the coil windings, so that the contact between the static iron core and the coil windings is reduced or even completely avoided, vibration generated by the impact of the static iron core, which is driven by the iron core, is not transmitted to the coil windings and the PCBA, the service life of the coil windings is prolonged, and the stability of the PCBA is improved.

In some aspects, a cushion may be disposed between the second side of the stationary core and the housing.

According to the scheme, the impact of the static iron core on the shell can be reduced, so that the impact of the coil winding is further reduced, the service life of the coil winding is further prolonged, and the stability of the PCBA is improved.

In some aspects, a cushion may be disposed between the winding support and the housing, for example, the cushion may be disposed in a lateral gap between the winding support and the housing.

According to the scheme, impact of the shell on the coil winding can be reduced, the service life of the coil winding is further prolonged, and the stability of the PCBA is improved.

In some aspects, the PCBA and the winding support may be welded together.

According to the scheme, the coil winding can be effectively prevented from being impacted by the PCBA when being impacted and vibrated by welding, and the stability of the PCBA is improved.

In some aspects, the width of the gap may be greater than 1mm.

According to this scheme, when quiet iron core receives the striking of moving the iron core and vibrates, if quiet iron core vibration's amplitude is less than 1mm, then be greater than 1 mm's clearance can avoid quiet iron core and coil winding's contact completely for shock-absorbing function is more stable.

According to a second aspect of the present utility model there is provided a contactor comprising a contactor assembly according to the first aspect of the present utility model.

According to this solution, since the service life of the coil winding is increased and the stability of the PCBA is improved in the contactor assembly, the service life of the contactor is also increased and the stability of the contactor is improved.

Drawings

FIG. 1 shows a schematic view of a contactor assembly according to an embodiment of the utility model;

fig. 2 shows a schematic diagram of the fixation between the coil winding and the PCBA according to an embodiment of the present utility model.

Reference numerals: 100 contactor assembly, 110 housing, 120 stationary core, 130 coil winding, 140 moving core, 150PCBA, 160 gap, 170 bumper pad, L1 first side, L2 second side, M lateral side.

Detailed Description

In order to make the objects, aspects and advantages of the technical solution of the present utility model more clear, the technical solution of the embodiment of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiment of the present utility model. Unless otherwise indicated, terms used herein have the meaning common in the art. Like reference numerals in the drawings denote like parts.

Fig. 1 shows a schematic view of a contactor assembly 100 according to an embodiment of the present utility model, the contactor assembly 100 generally comprising a housing 110, a stationary core 120 secured to the housing 110, a coil winding 130, a movable core 140, and a PCBA150 electrically connected to the coil winding 130, the coil winding 130 comprising a winding bracket secured to the housing 110 and a coil wound around the winding bracket. When the coil is energized to generate a magnetic field, the movable iron core 140 moves toward the stationary iron core 120, and when the coil is de-energized to not generate a magnetic field, the movable iron core 140 moves away from the stationary iron core 120.

When the movable iron core 140 moves toward the stationary iron core 120 and collides with the stationary iron core 120, the stationary iron core 120 is vibrated by the impact, and then the stationary iron core 120 may transmit the vibration to the coil winding 130 and the PCBA150, adversely affecting the life span of the coil winding 130 and the stability of the PCBA150. To overcome the above-described drawbacks, a gap 160 is provided between the stationary core 120 and the coil winding 130 such that when the movable core 140 collides with the stationary core 120 to vibrate the stationary core 120, the stationary core 120 is at least partially kept out of contact with the coil winding 130, thus blocking the transmission of vibrations of the stationary core 120 to the coil winding 130 and the PCBA150 at least at the gap 160.

Preferably, the stationary core 120 is hollow and has a rectangular profile, the coil is arranged in the hollow region of the stationary core 120, the stationary core 120 is provided with an opening on a first side L1 facing the movable core 140, and the stationary core 120 is adjacent to the housing 110 on a second side L2 facing away from the movable core 140. The gap 160 may be disposed between the first side L1 of the stationary core 120 and the coil winding 130 such that the first side L1 of the stationary core 120 remains out of contact with the coil winding 130 when the movable core 140 collides with the stationary core 120 to vibrate the stationary core 120. The gap 160 may be disposed between the second side L2 of the stationary core 120 and the coil winding 130 such that the second side L2 of the stationary core 120 is kept out of contact with the coil winding 130 when the movable core 140 collides with the stationary core 120 to vibrate the stationary core 120. The gap 160 may be provided between the coil windings 130 and the lateral sides M of the stationary core 120 such that the lateral sides M of the stationary core 120 are kept out of contact with the coil windings 130 when the movable core 140 collides with the stationary core 120 to vibrate the stationary core 120.

Particularly preferably, the gaps 160 are provided between the first side L1, the second side L2, and the lateral sides M of the static iron core 120 and the coil windings 130, so that the static iron core 120 and the coil windings 130 can be completely isolated, and vibration of the static iron core 120 can be almost completely prevented from being transmitted to the coil windings 130 and the PCBA150, thereby remarkably improving the service life of the coil windings 130 and simultaneously remarkably improving the stability of the PCBA150.

Preferably, a cushion 170 may be disposed between the second side L2 of the static iron core 120 and the housing 110, and the cushion 170 may reduce impact of the static iron core 120 on the housing 110, and reduce vibration of the static iron core 120 transmitted to the coil winding 130 through the housing 110, thereby further reducing impact to the coil winding 130, increasing service life of the coil winding 130, and improving stability of the PCBA150.

Further preferably, a cushion may be provided between the winding support and the housing 110, for example, a cushion may be provided in a lateral gap between the winding support and the housing 110, such a cushion arrangement may reduce the impact of the housing 110 on the coil winding 130, attenuate the transmission of vibrations of the stationary core 120 to the coil winding 130 through the housing 110, thereby further reducing the impact experienced by the coil winding 130, increasing the useful life of the coil winding 130 and improving the stability of the PCBA150.

Preferably, as shown in fig. 2, the PCBA150 and the winding support may be welded and fixed, so that the coil winding 130 can be effectively prevented from being impacted by the PCBA150 (especially, impact on the solder joints on the PCBA 150) when being impacted and vibrated, thereby improving the stability of the PCBA150.

Preferably, the width of the gap 160 may be greater than 1mm, so that when the stationary core 120 vibrates due to the impact of the movable core 140, if the amplitude of the vibration of the stationary core 120 is less than 1mm, the gap 160 of greater than 1mm can completely avoid the contact of the stationary core 120 with the coil winding 130, so that the shock absorbing function is more stable.

The contactor assembly 100 of the present utility model may be applied to contactors in which the contactor assembly 100 has a longer service life and better stability including the contactor assembly 100 because the life of the coil windings 130 is increased and the stability of the PCBA150 is improved by the shock absorbing means such as the gaps 160, the cushioning pads 170, etc.

Various exemplary embodiments of the present utility model have been described in detail herein with reference to the preferred embodiments, however, it will be appreciated by those skilled in the art that various modifications and adaptations can be made to the specific embodiments described above and that various technical features and structures can be combined without departing from the scope of the utility model, which is defined by the appended claims.

Claims (10)

1. A contactor assembly, comprising:

a housing;

a stationary core fixed to the housing;

a coil winding including a winding bracket fixed to the housing and a coil wound around the winding bracket;

the movable iron core moves towards the static iron core when the coil is electrified to generate a magnetic field, and moves away from the static iron core when the coil is deenergized to generate no magnetic field;

a PCBA electrically connected with the coil;

wherein a gap exists between the stationary core and the coil winding such that the stationary core remains at least partially out of contact with the coil winding when the stationary core vibrates due to a collision of the movable core with the stationary core.

2. The contactor assembly according to claim 1, wherein the stationary core is hollow and has a rectangular profile, the coil being arranged in a hollow region of the stationary core, the stationary core being provided with an opening on a first side facing the moving core, the stationary core being adjacent the housing on a second side facing away from the moving core.

3. The contactor assembly according to claim 2, wherein the contact is provided with a plurality of contact holes,

a gap exists between the first side of the static iron core and the coil winding, so that when the movable iron core collides with the static iron core to vibrate the static iron core, the first side of the static iron core keeps not in contact with the coil winding, and/or

A gap exists between the second side of the stationary core and the coil winding such that the second side of the stationary core remains out of contact with the coil winding when the movable core collides with the stationary core to vibrate the stationary core.

4. A contactor assembly according to claim 3, wherein there is a gap between the lateral sides of the stationary core and the coil windings such that the lateral sides of the stationary core remain out of contact with the coil windings when the stationary core vibrates due to the impact of the movable core with the stationary core.

5. The contactor assembly according to claim 2, wherein a cushion is provided between the second side of the stationary core and the housing.

6. The contactor assembly according to claim 1, wherein a cushion is provided between the winding support and the housing.

7. The contactor assembly according to claim 6, wherein the cushion is disposed in a lateral gap between the winding support and the housing.

8. The contactor assembly according to claim 1, wherein the PCBA is welded to the winding support.

9. The contactor assembly according to claim 1, wherein the width of the gap is greater than 1mm.

10. A contactor, characterized by comprising a contactor assembly according to any of claims 1 to 9.