CN220172016U

CN220172016U - Permanent magnet driving module and relay using same

Info

Publication number: CN220172016U
Application number: CN202321458521.2U
Authority: CN
Inventors: 雷富; 任世刚; 刘大义; 高鹏; 彭鹏
Original assignee: Mingguang Sanyou Power Technology Co ltd
Current assignee: Mingguang Sanyou Power Technology Co ltd
Priority date: 2023-06-07
Filing date: 2023-06-07
Publication date: 2023-12-12
Anticipated expiration: 2033-06-07

Abstract

The utility model relates to the technical field of relays, and particularly discloses a permanent magnet driving module and a relay using the same, wherein the permanent magnet driving module comprises: the movable iron core assembly comprises a movable iron core and a coil, wherein the movable iron core is provided with a stress end and a traction end, and the coil is arranged around the movable iron core; the permanent magnet assembly is arranged at the corresponding stress end and is used for resetting the movable iron core; when the coil is electrified, the movable iron core moves axially relative to the coil under the action of electromagnetic force generated by the coil. Therefore, the permanent magnet component is arranged at the stress end of the movable iron core, so that the magnetic force of the permanent magnet component acts on the stress end in a concentrated manner, the movable iron core is reset, the space occupied by the component for resetting the movable iron core is greatly reduced, and the requirement of miniaturization of the relay is further met.

Description

Permanent magnet driving module and relay using same

Technical Field

The utility model relates to the technical field of relays, in particular to a permanent magnet driving module and a relay using the same.

Background

With the rapid development of industry, the demand of light weight appears on many products, so the demand of relay or switch is towards miniaturized direction, but under the premise of keeping relay or switch performance not reduced, the current setting mode of resetting module can not satisfy the demand of relay miniaturization.

Disclosure of Invention

In order to solve at least one problem in the prior art, the utility model provides a permanent magnet driving module and a relay using the same, which can reduce the space occupied by the assembly for resetting the movable iron core, thereby being suitable for a miniaturized relay.

The utility model adopts the technical proposal for solving the problems that:

permanent magnetism drive module, include:

the movable iron core assembly comprises a movable iron core and a coil, wherein the movable iron core is provided with a stress end and a traction end, and the coil is arranged around the movable iron core;

the permanent magnet assembly is arranged corresponding to the stress end and is used for resetting the movable iron core;

when the coil is electrified, the movable iron core moves axially relative to the coil under the action of electromagnetic force generated by the coil.

In some embodiments of the present utility model, the permanent magnet assembly includes a magnet and a yoke, the yoke has a bottom wall and at least one magnetically conductive wall, the magnetically conductive wall is disposed at an edge of the bottom wall and disposed toward the force receiving end, the magnet is disposed at a side of the bottom wall toward the force receiving end and disposed corresponding to the force receiving end, and magnetic fluxes of the magnet are distributed along the bottom wall and the magnetically conductive wall.

In more specific embodiments, the magnetically permeable wall is formed with a top portion extending toward the plunger at an end thereof remote from the bottom wall.

In further examples, the yoke has two magnetically permeable walls disposed opposite one another with an opening formed between the top portions, the stressed end being capable of being received within the opening.

In further examples, the plunger assembly further comprises:

the coil rack is provided with an installation space in a penetrating way;

wherein, the movable iron core is inserted in the installation space; the coil is wound around the outer peripheral side of the bobbin so as to be disposed around the movable iron core.

In practical application, a protrusion is formed on the side of the top facing the movable core, and a mating groove is provided at the end of the coil bobbin corresponding to the protrusion, and the protrusion is fitted in the groove to attach the yoke to the end of the coil bobbin.

Preferably, the inner side of the joint of the bulge and the top is in arc transition.

In practical application, the coil frame is provided with a wire, and the coil is communicated with a power supply through the wire.

In some embodiments of the utility model, the traction end is formed with a radially extending snap-fit portion for connection with a push tab within the relay.

Based on the same conception, the utility model also discloses a relay, and the relay is applied with the permanent magnet driving module.

In summary, the permanent magnet driving module and the relay using the same provided by the utility model have the following technical effects:

in the embodiment of the permanent magnet driving module, a movable iron core assembly and a permanent magnet assembly are arranged, wherein the movable iron core assembly comprises a movable iron core and a coil, the movable iron core is provided with a stress end and a traction end, and the coil is arranged around the movable iron core; the permanent magnet component is arranged corresponding to the stress end and is used for resetting the movable iron core; when the coil is electrified, the movable iron core moves axially relative to the coil under the action of electromagnetic force generated by the coil. Therefore, the permanent magnet component is arranged at the stress end of the movable iron core, so that the magnetic force of the permanent magnet component acts on the stress end in a concentrated manner, the movable iron core is reset, the space occupied by the component for resetting the movable iron core is greatly reduced, and the requirement of miniaturization of the relay is further met.

And through the application of the permanent magnet driving module, the relay can utilize smaller space to install the permanent magnet driving module, so that the whole volume of the relay can be smaller to adapt to the miniaturization trend.

Drawings

FIG. 1 is a perspective view of a permanent magnet drive module according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of a permanent magnet drive module according to the present utility model;

FIG. 3 is an exploded view of an embodiment of a permanent magnet drive module according to the present utility model;

fig. 4 is a perspective view of a yoke in an embodiment of a permanent magnet driving module according to the present utility model.

Wherein the reference numerals have the following meanings:

the iron core assembly 1, the iron core 11, the stress end 111, the traction end 112, the clamping part 1121, the coil 12, the permanent magnet assembly 2, the magnet 21, the yoke 22, the top 2211, the boss 22111, the coil former 13, the installation space 130, the lead 131 and the attachment part 132.

Detailed Description

For a better understanding and implementation, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present utility model. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used in this description of this utility model are intended to describe specific embodiments only and are not intended to limit the utility model.

Example 1

According to fig. 1 to 4, the utility model provides a permanent magnet driving module, which comprises a movable iron core assembly 1 and a permanent magnet assembly 2.

The movable iron core assembly 1 comprises a movable iron core 11, a coil 12 and a coil rack 13, wherein the coil rack 13 is provided with an installation space 130 in a penetrating way, and the movable iron core 11 is provided with a stress end 111 and a traction end 112; the movable iron core 11 is inserted in the installation space 130, and the coil 12 is arranged on the outer periphery side of the coil frame 13 around the movable iron core 11; when the coil 12 is energized, the plunger 11 moves axially with respect to the coil 12 by electromagnetic force generated by the coil 12, and similarly, the plunger 11 moves axially with respect to the bobbin 13.

In a more specific embodiment, the coil frame 13 is provided with wires 131, and in practical application, the coil frame 13 is provided with two groups of wires 131, the two groups of wires 131 are respectively connected with the positive electrode and the negative electrode of the power supply and the positive electrode and the negative electrode of the coil 13, and the coil 12 is communicated with the power supply through the wires 131.

Of course, in some embodiments, the moving core assembly 1 may not be provided with the coil frame 13, only the coil 12 is required to be disposed around the moving core 11, but the present utility model uses the moving core assembly 1 provided with the coil frame 13 as a preferred embodiment, and will be further described herein.

Wherein, the permanent magnet component 2 is arranged corresponding to the stress end 111, and the permanent magnet component 2 is used for resetting the movable iron core 11; specifically, the permanent magnet assembly 2 includes a magnet 21 and a yoke 22, the yoke 22 has a bottom wall 220 and at least one magnetic conducting wall 221, the magnetic conducting wall 221 is disposed at an edge of the bottom wall 220, the magnet 21 is disposed at a side of the bottom wall 220 facing the stress end 111 and corresponding to the stress end 111, and magnetic fluxes of the magnet 21 are distributed along the bottom wall 220 and the magnetic conducting wall 221.

In practical application, the yoke 22 may be provided with one magnetic conductive wall 221, or may be provided with two magnetic conductive walls 221, and the present utility model uses the yoke 22 provided with two magnetic conductive walls 221 as a preferred embodiment, and will be further described herein.

Under the actual working condition of the permanent magnet driving module, the coil 12 is communicated with a power supply, when the current flowing through the coil 12 is large enough, the generated electromagnetic force can drive the movable iron core 11 to overcome the magnetic force of the magnet 21, so that the movable iron core 11 moves axially relative to the coil frame 13, and the traction end 112 moves in a direction away from the magnet 21; when the current flowing through the coil 12 is small enough or the coil 12 is not powered on, the movable iron core 11 is reset into the installation space 130 under the action of the magnetic force of the magnet 21, and the traction end 112 is reset to the end of the coil frame 13 away from the permanent magnet assembly 12.

Therefore, the permanent magnet assembly 2 is arranged at the stress end 111 of the movable iron core 11, so that the magnetic force of the permanent magnet assembly 2 acts on the stress end 111 in a concentrated manner, the movable iron core 11 is reset, the space occupied by the assembly for resetting the movable iron core 11 is greatly reduced, and the requirement of miniaturization of the relay is further met.

In more specific embodiments, the end of the magnetic conductive wall 221 away from the bottom wall extends towards the movable iron core 11 to form a top 2211, and the magnetic flux of the magnet 21 is distributed along the bottom wall 220, the magnetic conductive wall 221 and the top 2211, so that the magnetic flux of the magnet 21 can be gathered in the yoke 22 more by reducing the gap between the magnetic conductive wall 221 and the movable iron core 11 without increasing the space occupied by the yoke 22, and the sealing area of the yoke 22 to the magnet of the magnet 21 can be further increased, thereby enhancing the sealing effect to the magnetic force of the magnet 21 and enhancing the sealing effect of the yoke 22 to the magnetic force of the magnet 21.

In further examples, the yoke 22 has two magnetic conductive walls 221 disposed opposite to each other, and an opening is formed between the two top portions 2211, and the stress end 111 can be inserted into the opening, so that the yoke 22 can more fully close the magnetic force of the magnet 11 and the movable iron core 11 can be inserted into the yoke 22, and thus be reset by the magnetic attraction of the magnet 21.

In more specific embodiments, the top 2211 is formed with a protrusion 22111 on a side facing the movable core 11, the end portion of the coil frame 13 is provided with a matching groove 132 corresponding to the protrusion 22111, the protrusion 22111 is assembled in the groove 132, so that the yoke 22 is attached to the end portion of the coil frame 13, and the end portion of the coil frame 13 is one end facing the permanent magnet assembly 21, and through the above arrangement, the yoke 22 is attached to the end portion of the coil frame 13 with a simpler structure, so that the permanent magnet assembly 2 is disposed at the stress end 111 of the movable core 11, thereby achieving the effect of reducing the space occupied by the permanent magnet assembly 2.

In further examples, the connection of the protrusion 22111 to the top 2211 is provided with a rounded transition inside to avoid damage to the components due to rigid interference when contact between the yoke 22 and the plunger 11 occurs.

In some embodiments of the present utility model, the traction end 112 extends along a radial direction to form a clamping portion 1121, and the clamping portion 1121 is used for being connected with a push piece in the relay, so as to drive the push piece to displace, so that the contact is closed, and on-off control of the power supply of the device is realized.

In the above embodiments and implementations, the magnetic force of the magnet 21 is concentrated in the yoke 22, so as to concentrate the force applied to the force-receiving end 111 of the movable core 11, and thus provide enough magnetic force to the movable core 11 in a limited space, so that the magnetic force applied to the movable core 11 is sufficient to drive the movable core to move axially relative to the coil 12.

Example 2

Based on the same conception, the utility model also provides a relay, which is provided with the permanent magnet driving module, and by applying the permanent magnet driving module, the relay can keep enough permanent magnet force in a limited space to drive the opening and closing of the movable contact and the static contact, thereby meeting the requirement of miniaturization of the relay.

More specifically, the relay further includes: the reed is connected with the traction end 112, the movable contact is arranged on the reed, and the fixed contact is fixedly arranged corresponding to the movable contact; when the movable iron core 11 moves axially relative to the coil 12, the traction end 112 drives the reed to close the movable contact and the stationary contact.

In more specific embodiments, the relay further comprises: the pushing piece is fixedly connected to the traction end 112 and is provided with an inclined table which is connected with the reed; when the movable iron core 11 moves axially relative to the coil 12, the traction end 112 drives the push piece, so that the reed displaces under the action of the inclined table, and the movable contact and the stationary contact are closed.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. While alternative embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including alternative embodiments and all such alterations and modifications as fall within the scope of the embodiments of the utility model.

Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or terminal. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude that an additional identical element is present in an article or terminal device comprising the element.

While the foregoing has been described in some detail by way of illustration of the principles and embodiments of the utility model, and while in accordance with the principles and implementations of the utility model, those skilled in the art will readily recognize that the utility model is not limited thereto.

Claims

1. Permanent magnetism drive module, its characterized in that includes:

a movable iron core assembly (1), wherein the movable iron core assembly (1) comprises a movable iron core (11) and a coil (12), the movable iron core (11) is provided with a stress end (111) and a traction end (112), and the coil (12) is arranged around the movable iron core (11);

the permanent magnet assembly (2) is arranged corresponding to the stress end (111), and the permanent magnet assembly (2) is used for resetting the movable iron core (11);

when the coil (12) is electrified, the movable iron core (11) moves axially relative to the coil (12) under the action of electromagnetic force generated by the coil (12).

2. The permanent magnet driving module according to claim 1, wherein the permanent magnet assembly (2) comprises a magnet (21) and a yoke (22), the yoke (22) is provided with a bottom wall (220) and at least one magnetic conduction wall (221), the magnetic conduction wall (221) is arranged at the edge of the bottom wall (220) and towards the stress end (111), the magnet (21) is arranged at one side of the bottom wall (220) towards the stress end (111) and corresponds to the stress end (111), and magnetic fluxes of the magnet (21) are distributed along the bottom wall (220) and the magnetic conduction wall (221).

3. The permanent magnet drive module according to claim 2, wherein the end of the magnetically permeable wall (221) remote from the bottom wall (220) extends towards the movable core (11) to form a top (2211).

4. A permanent magnet drive module according to claim 3, wherein the yoke (22) has two magnetic conductive walls (221) disposed opposite to each other, an opening is formed between the two top portions (2211), and the stress end (111) can be inserted into the opening.

5. A permanent magnet drive module according to claim 3, wherein the plunger assembly (1) further comprises:

a coil former (13), wherein the coil former (13) is provided with an installation space (130) in a penetrating way;

wherein the movable iron core (11) is inserted in the installation space; the coil (12) is wound around the outer peripheral side of the bobbin (13) so as to be disposed around the movable core (11).

6. The permanent magnet drive module according to claim 5, characterized in that a protrusion (22111) is formed on a side of the top (2211) facing the moving core (11), and that an end of the bobbin (13) is provided with a mating recess (132) corresponding to the protrusion (22111), the protrusion being fitted in the recess so that the yoke is attached to the end of the bobbin.

7. The permanent magnet drive module according to claim 6, wherein the inner side of the connection between the protrusion (22111) and the top (2211) is provided with a circular arc transition.

8. Permanent magnet drive module according to claim 5, characterized in that the coil former (13) is provided with a wire (131), the coil (12) being in communication with a power supply via the wire (131).

9. The permanent magnet drive module according to any one of claims 1 to 8, wherein the traction end (112) is formed with a clamping portion (1121) extending in a radial direction, the clamping portion (1121) being adapted to be connected to a push tab in a relay.

10. Relay, characterized in that a permanent magnet drive module according to any of claims 1 to 9 is applied.