WO2020215379A1

WO2020215379A1 - Electromagnetic switch device

Info

Publication number: WO2020215379A1
Application number: PCT/CN2019/086249
Authority: WO
Inventors: 严绪东; 金云浩; 游泳; 石梦珣; 周科勇
Original assignee: 常州市瑞泰光电有限公司
Priority date: 2019-04-24
Filing date: 2019-05-09
Publication date: 2020-10-29
Also published as: CN110085481B; CN110085481A

Abstract

The present invention provides an electromagnetic switch device, comprising a housing, a stator mounted within the housing, and a rotor capable of moving with respect to the stator. The stator comprises a stationary iron core fixed to the housing and a cylindrical coil fixed within the housing, the stationary iron core being mounted within the coil. The rotor comprises a moving iron core provided within the coil and located on one side of the stationary iron core, a reset elastic member being connected between the stationary iron core and the moving iron core. The end face of the moving iron core facing the stationary iron core is provided with a first accommodating groove for accommodating one end of the reset elastic member, and the end face of the stationary iron core facing the moving iron core is provided with a second accommodating groove for accommodating the other end of the reset elastic member. The electromagnetic switch device further comprises a connecting member connected to the moving iron core and having a tail end extending to the outer side of the housing to connect an external device, the connecting member generating a displacement under the drive of the moving iron core. The electromagnetic switch device provided by the present invention features a simple structure, simple part processing and assembling, and low costs.

Description

Electromagnetic switching device

【Technical Field】

The present invention relates to the field of electronic equipment, and in particular to an electromagnetic switch device applied to mobile terminal equipment.

【Background technique】

At present, the mobile phone industry relies on the module of stepper motor, reducer, and transmission screw pair to realize the lifting function of the internal components of the mobile phone; its working principle is: the extended gear shaft of the stepper motor meshes with the gear of the reducer, and the motor rotates at high speed. , The torque is transmitted to the reducer through gears to achieve speed reduction and torque increase. The back end of the reducer is connected with the screw pair to convert the rotary motion into linear motion. The nut on the screw pair moves linearly to drive the internal components to rise and fall. This kind of existing lifting scheme has shortcomings and shortcomings: the structure of the module is complex, the parts processing accuracy is high, the assembly is difficult, the cost is high, and the mass production is difficult.

Therefore, it is necessary to provide an electromagnetic switching device with a simpler structure.

[Content of the invention]

The purpose of the present invention is to provide an electromagnetic switch device with a simpler structure.

The technical scheme of the present invention is as follows:

An electromagnetic switch device is provided, which includes a housing, a stator installed in the housing, and a mover movable relative to the stator, wherein the stator includes a fixed iron core fixed in the housing and a fixed iron core fixed in the housing A cylindrical coil, the fixed iron core is installed in the coil; the mover includes a moving iron core arranged in the coil and located on one side of the fixed iron core, and the coil is sleeved The fixed iron core and the outer periphery of the moving iron core, a reset elastic piece is connected between the fixed iron core and the moving iron core, and the coil drives the moving iron core in an axial direction relative to the fixed iron core Moving, the reset elastic element provides a restoring force for the movable iron core; the end surface of the movable iron core facing the fixed iron core is provided with a first accommodation groove for accommodating one end of the reset elastic element, The end surface of the fixed iron core facing the moving iron core is provided with a second accommodating groove for accommodating the other end of the reset elastic element; the electromagnetic switch device further includes an end connected to the moving iron core A connecting piece extending to the outside of the housing for connecting external devices, and the connecting piece is driven by the movable iron core to generate displacement.

Further, the movable iron core is convexly provided with a guide protrusion on one end facing the fixed iron core, and the fixed iron core is recessed with a guide groove adapted to the guide protrusion.

Further, a guide protrusion is protrudingly provided on one end of the fixed iron core facing the movable iron core, and a guide groove adapted to the guide protrusion is concavely provided on the movable iron core.

Further, a damping element is provided between the side of the movable iron core facing away from the fixed iron core and the housing.

Further, the reset elastic member is a coil spring.

Further, the connecting member includes a buckle and a connecting rod connecting the buckle and the movable iron core, and a through hole for the connecting rod to pass is opened on the housing.

Further, the electromagnetic switch device further includes a bracket for fixing the coil, and the bracket includes a sleeve sleeved on the fixed iron core and the moving iron core, and two separate parts from the sleeve. The edges of the two ports extend radially outwardly on end walls, and the coil is sleeved outside the sleeve and sandwiched between the two end walls.

Further, the housing includes a housing main body having a housing cavity for accommodating the coil, the fixed iron core, and the moving iron core, and a cover plate covering the housing main body, the through hole Open on the cover.

Further, the housing body includes a bottom wall opposite to the cover plate and spaced apart, and a side wall extending from the edge of the bottom wall toward the cover plate, and the fixed iron core is fixed on the bottom wall , The movable iron core and the reset elastic member are arranged between the cover plate and the fixed iron core.

The beneficial effects of the present invention are: when the coil is energized, the fixed iron core and the moving iron core are magnetized, the moving iron core attracts the fixed iron core, the moving iron core drives the connecting piece down, the reset elastic piece is compressed, and the coil is de-energized , The reset elastic piece will return the moving iron core to its position, so that the moving iron core drives the connecting piece to reciprocate and drives the camera up and down. The electromagnetic switch device provided by the invention has a simple structure, simple parts processing and assembly, and low cost.

【Explanation of drawings】

FIG. 1 is a schematic structural diagram of an electromagnetic switch device provided by an embodiment of the present invention;

Figure 2 is a schematic cross-sectional view along line A-A in Figure 1 in an embodiment (the direction indicated by the arrow is the cutting direction)

Figure 3 is a schematic cross-sectional view taken along line A-A in Figure 1 in another embodiment (the direction indicated by the arrow is the cutting direction).

100. Electromagnetic switching device; 1. Case; 2. Coil; 31. Fixed iron core; 32. Moving iron core; 4. Reset elastic piece; 5. Connecting piece; 311. Guide boss; 301. Guide groove; 302. First accommodating groove; 303. Second accommodating groove; 51, buckle; 52, connecting rod; 101, through hole; 6, bracket; 61, sleeve; 62, end wall; 7, damping member; 10. Accommodating cavity; 11, main body of housing; 12, cover plate; 111, bottom wall; 112, side wall.

【Detailed ways】

The present invention will be further described below with reference to the drawings and embodiments.

1 and 2, there is provided an electromagnetic switch device 100, including a housing 1, a stator installed in the housing 1, and a mover movable relative to the stator. The stator includes a fixed iron core 31 fixed to the housing 1 and a fixed The coil 2 is cylindrical in the housing 1, and the fixed iron core 31 is installed in the coil 2. The mover includes a movable iron core 32 arranged in the coil 2 and located on the side of the fixed iron core 31, and the coil 2 is sleeved on the fixed iron The outer periphery of the core 31 and the moving iron core 32, the fixed iron core 31 and the moving iron core 32 are connected with a reset elastic member 4, the coil 2 drives the moving iron core 32 to move axially relative to the fixed iron core 31, and the reset elastic member 4 is The moving iron core 32 provides a restoring force; the moving iron core 32 faces the fixed iron core 31 with a first accommodating groove 302 for accommodating one end of the reset elastic element 4, and the fixed iron core 31 faces the end face of the moving iron core 32 A second accommodating slot 303 for accommodating the other end of the reset elastic member 4 is opened on the upper side; the electromagnetic switch device further includes a connecting member 5 connected to the movable iron core 32 and extending to the outside of the housing for connecting external devices. The piece 5 is driven by the movable iron core 32 to produce displacement.

The fixed iron core 31 is fixed to the housing 1, the axial direction of the coil 2 is in the same direction as the lifting direction of the connecting piece 5. When the coil 2 is energized, the fixed iron core 31 and the moving iron core 32 are magnetized, and the two attract each other and move The iron core 32 drives the connecting piece 5 down (to the right in FIG. 2), the reset elastic piece 4 is compressed, and after the coil 2 is de-energized, the reset elastic piece 4 resets to spring back the moving iron core 32 (to the left in FIG. 2 The direction), so as to realize that the movable iron core 32 drives the connecting member 5 to reciprocate and drives the internal components to rise and fall. The electromagnetic switch device 100 provided by the present invention has a simple structure, simple parts processing and assembly, and low cost. One end of the reset elastic member 4 is limited by the first accommodating groove 302, and the other end is limited by the second accommodating groove 303, so that the reset elastic member 4 is not easily deflected during the deformation process.

Preferably, one end of the movable iron core 32 facing the fixed iron core 31 is convexly provided with a guiding protrusion 311, and the fixed iron core 31 is concavely provided with a guiding groove 301 adapted to the guiding protrusion 311.

The guiding protrusion 311 cooperates with the guiding groove 301 to position the mutual position of the movable iron core 32 and the fixed iron core 31 and at the same time play a role of guiding the movement of the movable iron core 32.

Understandably, the positions of the guiding protrusion 311 and the guiding groove 301 can be interchanged. It can also achieve positioning and guidance.

In another embodiment, referring to FIG. 3, a damping element 7 is provided between the side of the movable iron core 32 facing away from the fixed iron core 31 and the housing 1. The damping element 7 can limit the amplitude, and can also prevent the moving iron core 32 from colliding with the housing 1 to generate noise.

Preferably, the reset elastic member 4 is a coil spring.

Preferably, the connecting member 5 includes a buckle 51 and a connecting rod 52 connecting the buckle 51 and the movable iron core 32, and the housing 1 is provided with a through hole 101 through which the connecting rod 52 passes. The buckle 51 is used to install internal components, and the connecting rod 52 is used to connect the buckle 51 and the moving iron core 32.

The internal component may be a camera, the latch 51 is ring-shaped, and a lock hook that engages with the latch 51 is installed on the camera. Of course, the camera and the latch 51 may also be fixedly connected by threads.

Preferably, the electromagnetic switch device 100 further includes a bracket 6 for fixing the coil 2. The bracket 6 includes a sleeve 61 sleeved on the fixed iron core 31 and the moving iron core 32, and two edges from the two ports of the sleeve 61 respectively. On the end wall 62 extending radially outward, the coil 2 is sleeved outside the sleeve 61 and sandwiched between the two end walls 62.

The bracket 6 is used to mount the coil 2, the shape of the sleeve 61 is adapted to the shape of the coil 2, and the thickness of the end wall 62 along the axial direction of the sleeve 61 is greater than or equal to the thickness of the coil 2.

Preferably, the housing 1 includes a housing main body 11 having a housing cavity 10 for accommodating the coil 2, the fixed iron core 31, and the moving iron core 32, and a cover plate 12 covering the housing main body 11, and a through hole 101 is opened In the cover plate 12. The arrangement of the cover plate 12 facilitates opening the housing 1 to inspect and repair internal components.

Preferably, the housing body 11 includes a bottom wall 111 opposite to the cover 12 and spaced apart, and a side wall 112 extending from the edge of the bottom wall 111 toward the cover. The fixed iron core 31 is fixed on the bottom wall 111, and the moving iron core 32 And the reset elastic member 4 is arranged between the cover plate 12 and the bottom wall 111.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

An electromagnetic switch device includes a housing, a stator installed in the housing, and a mover movable relative to the stator. The stator is characterized in that the stator includes a fixed iron core fixed to the housing and a fixed iron core fixed in the housing. A cylindrical coil, the fixed iron core is installed in the coil; the mover includes a moving iron core arranged in the coil and located on one side of the fixed iron core, and the coil is sleeved on the The fixed iron core and the outer periphery of the moving iron core, a reset elastic member is connected between the fixed iron core and the moving iron core, and the coil drives the moving iron core to move axially relative to the fixed iron core , The reset elastic member provides a restoring force for the movable iron core; the movable iron core has a first accommodating groove for accommodating one end of the reset elastic member on the end face of the movable iron core facing the fixed iron core, so The end surface of the fixed iron core facing the moving iron core is provided with a second accommodating groove for accommodating the other end of the reset elastic element; the electromagnetic switch device further includes a second accommodating groove connected to the moving iron core with an end extending A connecting piece to the outside of the housing for connecting external devices, and the connecting piece is driven by the movable iron core to generate displacement.
The electromagnetic switch device according to claim 1, wherein the movable iron core is provided with a guide protrusion on one end facing the fixed iron core, and the fixed iron core is recessed with the guide protrusion Guide groove for column adaptation.
The electromagnetic switch device according to claim 1, wherein the fixed iron core is provided with a guide protrusion on one end facing the movable iron core, and the movable iron core is recessed with the guide protrusion Guide groove for column adaptation.
The camera lifting electromagnetic switch device according to claim 1, wherein a damping member is provided between the side of the movable iron core facing away from the fixed iron core and the housing.
The electromagnetic switch device according to any one of claims 1 to 4, wherein the reset elastic member is a coil spring.
The electromagnetic switch device according to claim 1, wherein the connecting member includes a buckle and a connecting rod connecting the buckle and the movable iron core, and the housing is provided with a passage for the connecting rod to pass through. hole.
The electromagnetic switch device according to claim 1, characterized in that: the electromagnetic switch device further comprises a bracket for fixing the coil, and the bracket includes sleeves on the fixed iron core and the moving iron core The sleeve and two end walls extending radially outward from the edges of the two ports of the sleeve respectively, the coil is sleeved outside the sleeve and sandwiched between the two end walls.
The electromagnetic switch device according to claim 6, wherein the housing includes a housing body having a housing cavity for housing the coil, the fixed iron core, and the moving iron core, and the housing In the cover plate on the shell body, the through hole is opened in the cover plate.
8. The electromagnetic switch device according to claim 8, wherein the housing main body includes a bottom wall opposite to the cover plate and spaced apart, and side walls extending from the edge of the bottom wall toward the cover plate , The fixed iron core is fixed on the bottom wall, and the movable iron core and the reset elastic member are arranged between the cover plate and the fixed iron core.