CN202735574U

CN202735574U - Optical filter switching device

Info

Publication number: CN202735574U
Application number: CN201220289308.9U
Authority: CN
Inventors: 罗启武; 王照熙; 刘高祺
Original assignee: VITAI TECHNOLOGY Co Ltd
Current assignee: VITAI TECHNOLOGY Co Ltd
Priority date: 2012-06-19
Filing date: 2012-06-19
Publication date: 2013-02-13
Anticipated expiration: 2022-06-19

Abstract

The utility model relates to an optical filter switching device which includes a seat, a sliding frame sheet and an electromagnetic drive unit. One end in the seat is provided with a frame sheet sliding area. The frame sheet sliding area is provided with a light through hole. In the seat, the other end adjacent to the frame sheet sliding area is provided with a storage part in a concave way. The sliding frame sheet can be movably arranged in the frame sheet sliding area of the seat. The sliding frame sheet is provided with an infrared ray stopping sheet and an infrared ray penetrating sheet. The electromagnetic drive unit is arranged in the storage part of the seat. The electromagnetic drive unit includes a stirring part, a magnet, a yoke and a coil. One end of the stirring part is connected with the sliding frame sheet, and the other end is provided with the magnet. The coil is wound on the yoke. The two ends of the yoke are bent in symmetry to form a first excitation part and a second excitation part. Each of the first excitation part and the second excitation part is provided with an end face, and the two end faces are arranged on the two sides of the magnet.

Description

Switching device of optical fiber

Technical field

The utility model is relevant for a kind of switching device of optical fiber, and particularly relevant for a kind of switching device of optical fiber for switching corresponding to the optical filter of the camera lens of device for image.

Background technology

Existing switching device of optical fiber, usually use two coils, rotate in order to drive magnetite, shown in Fig. 6 A, 6B, be provided with two loop A 1, an and magnetite A2 in the housing A3, by changing different magnetic poles N, S after 1 energising of two loop A, behind the magnetite A2 magneticaction of centre, magnetite A2 is rotated, and then drive one and be provided with the slide of optical filter to reach the purpose of switching optical filter.Yet each coil needs two solder joints, for changing magnetic pole, uses two coils to need four solder joints, thereby increase production process and material cost, and the spacing of two coils and magnetite needs balance, otherwise the outputting torsion of holding and closing meeting inequality.

Therefore, the improving of the above-mentioned shortcoming of inventor's thoughts is that the spy concentrates on studies and cooperates the utilization of scientific principle, finally proposes a kind of reasonable in design and effectively improve the utility model of above-mentioned shortcoming.

Prior art:

Loop A 1

Magnetite A2

Housing A3

Magnetic pole N, S

Summary of the invention

The purpose of this utility model is to provide a kind of switching device of optical fiber, and it is more simplified on the prior art structure, and only needs coil of winding can reach the switching of optical filter.

In order to reach technique effect described above, the utility model provides a kind of switching device of optical fiber, comprise a pedestal, end in this pedestal is provided with a frame sheet sliding area, this frame sheet sliding area offers a smooth through hole, and the other end adjacent to this frame sheet sliding area is concaved with a holding part in this pedestal; One slider bar sheet is arranged at this frame sheet sliding area of this pedestal movably, and this slider bar sheet is provided with an infrared ray cut sheet and an infrared penetration sheet; An and electromagnetic drive unit, be arranged at this holding part of this pedestal, this electromagnetic drive unit includes a shifting part, one magnetite, one yoke, an and coil, this shifting part one end is connected in this slider bar sheet, this shifting part other end is provided with this magnetite, this coil is set around this yoke, and by the two ends of this yoke respectively symmetrical bending be extended with the first excitation division and the second excitation division, this first excitation division and this second excitation division have respectively an end face, and these both ends of the surface lay respectively at the both sides of this magnetite, after this magnetite is subjected to magneticaction thus, make this light through hole of this pedestal optionally corresponding to this infrared ray cut sheet of this slider bar sheet and one of them of this infrared penetration sheet.

This slider bar sheet one end has an optical window, and this optical window is corresponding to this infrared ray cut sheet and this infrared penetration sheet, and this slider bar sheet other end has extended to form a protuberance, and this protuberance has strip fluting.

Preferably, this shifting part has a swing arm, this swing arm one end is extended with a nose bar downwards, this nose bar is arranged in this strip fluting of this slider bar sheet, this swing arm other end is extended with a pivotal axis downwards, this magnetite is sheathed and be fixed in this pivotal axis, and this holding part has a reference column away from an end of this protuberance, and this pivotal axis is hubbed at this reference column.

Preferably, this switching device of optical fiber also includes a cover plate, and this cover plate and this pedestal are interlocked, and this cover plate is formed with an opening, and this opening is formed at this cover plate corresponding to the position of this light through hole of this pedestal.

Preferably, this magnetite is one to be the magnet of hollow cylindrical.

From the above, the utility model only need arrange a coil, and the switching that can reach optical filter can reduce welding sequence, is easy to the processing assembling and saves cost.

Description of drawings

Fig. 1 is the schematic perspective view of switching device of optical fiber of the present utility model.

Fig. 2 is the synoptic diagram of the pedestal inner member of switching device of optical fiber of the present utility model.

Fig. 3 is the exploded perspective synoptic diagram of switching device of optical fiber of the present utility model.

Fig. 4 A is the slider bar sheet of switching device of optical fiber of the present utility model and the synoptic diagram that shifting part is positioned at primary importance.

Fig. 4 B is the slider bar sheet of switching device of optical fiber of the present utility model and the synoptic diagram that shifting part is positioned at the second place.

Fig. 5 A is the coil floor map during conducting not of switching device of optical fiber of the present utility model.

Floor map when Fig. 5 B is coil conducting first electric current of switching device of optical fiber of the present utility model.

Floor map when Fig. 5 C is coil conducting second electric current of switching device of optical fiber of the present utility model.

Floor map when Fig. 6 A is two coil conducting the first electric currents of prior art.

Floor map when Fig. 6 B is two coil conducting the second electric currents of prior art.

Wherein, description of reference numerals is as follows:

Housing 1

Pedestal 11

Frame sheet sliding area 111

Holding part 112

Light through hole 1111

Reference column 1121

Cover plate 12

Opening 121

Buckle 122

Slider bar sheet 2

Optical window 21

Protuberance 22

Infrared ray cut sheet 23

Infrared filter 24

Fluting 221

Electromagnetic drive unit 3

Shifting part 31

Swing arm 311

Nose bar 312

Pivotal axis 313

Magnetite 32

Yoke 33

The first excitation division 331

End face 3311

The second excitation division 332

End face 3321

Coil 34

Power lead 4

Magnetic pole N, S

Embodiment

For the purpose of this utility model, structure, feature and function thereof are had further understanding, now cooperate embodiment to be described in detail as follows:

See also Fig. 1, be schematic perspective view of the present utility model.And see also Fig. 2 and Fig. 3.Switching device of optical fiber of the present utility model includes a housing 1, a slider bar sheet 2, an electromagnetic drive unit 3, reaches a power lead 4.Housing 1 includes a pedestal 11 and a cover plate 12.End in the pedestal 11 is provided with a frame sheet sliding area 111, and this frame sheet sliding area 111 offers a smooth through hole 1111, and the other end adjacent to this frame sheet sliding area 111 is concaved with a holding part 112 in this pedestal 11.

Above-mentioned cover plate 12 has the buckle 122 that is interlocked with pedestal 11, and this cover plate 12 is formed with an opening 121, and this opening 121 is formed at this cover plate 12 corresponding to the position of this light through hole 1111 of this pedestal 11.

Above-mentioned slider bar sheet 2 is arranged at this frame sheet sliding area 111 in this pedestal 11 movably.Slider bar sheet 2 is roughly a rectangle lamellar body, these slider bar sheet 2 one ends have an optical window 21, this optical window 21 is equiped with an infrared ray cut sheet 23 and an infrared penetration sheet 24, and these slider bar sheet 21 other ends have extended to form a protuberance 22, and this protuberance 22 has strip fluting 221.

Above-mentioned electromagnetic drive unit 3 is arranged at the holding part 112 of pedestal 11.Electromagnetic drive unit 3 includes a shifting part 31, a magnetite 32, a yoke 33, reaches a coil 34.Shifting part 31 1 ends are connected in slider bar sheet 2, and these shifting part 31 other ends are provided with magnetite 32.Specifically, shifting part 31 has a swing arm 311, these swing arm 311 1 ends are extended with a nose bar 312 downwards, this nose bar 312 is arranged in the strip fluting 221 of slider bar sheet 2, these swing arm 311 other ends are extended with a pivotal axis 312 downwards, magnetite 32 is sheathed and be fixed in this pivotal axis 313, and this holding part 112 has a reference column 1121 away from an end of this protuberance 22, and this pivotal axis 313 is hubbed at this reference column 1121.

Above-mentioned coil 34 is set around this yoke 33, and by the two ends of this yoke 33 respectively symmetrical bending be extended with the first excitation division 331 and the second excitation division 332, this first excitation division 331 has respectively an

end face

3311,3321 with this second excitation division 332.

The end face of above-mentioned the first excitation division 331 and the second excitation division 332 is little arc curve that caves inward, and these both ends of the

surface

3311,3321 are positioned at the both sides of this magnetite 32 in the compartment of terrain respectively.

It is worth mentioning that the utility model only needs a coil 34, can reach the switching between the optical filter.And owing to reduced by a coil than prior art, in same pedestal 11 width, can be provided with long swing arm 311, under identical swing angle, can have long swinging distance, can increase the transverse shifting distance of slider bar sheet 2.

See also Fig. 4 A to Fig. 5 C, switching device of optical fiber of the present utility model is when start, and its start relation is roughly as described below:

When foreign current did not pass into coil 34 via power lead 4, first excitation division 331 at yoke 33 two ends and the second excitation division 332 can not be subjected to coil 34 excitations to produce pole orientation, and magnetite 32 can not be subject to magneticaction (such as Fig. 5 A).At this moment, the swing arm 311 of shifting part 31 is positioned at primary importance (such as Fig. 4 A) with slider bar sheet 2.The position of infrared penetration sheet 24 is corresponding to the light through hole 1111 of pedestal 11, so that infrared penetration makes the night vision effect better, for the switching device of optical fiber that uses at night.

When slider bar sheet 2 is positioned at primary importance and coil 34 via power lead 4 conductings the first electric current, the first excitation division 331 and second excitation division 332 at yoke 33 two ends will produce respectively magnetic pole S, N.Thus, the magnetic pole that the first excitation division 331 and the second excitation division 332 produce repels (such as Fig. 5 B) mutually with the magnetite 24 with magnetic pole S, N, make the swing arm 311 of shifting part 31 be rocked to the second place because of the magneticaction that repels each other, and then drive slider bar sheet 2 turn to the second place (such as Fig. 4 B).This moment, infrared ray cut sheet 23 position was corresponding to the light through hole 1111 of pedestal 11, can avoid infrared ray to disturb, at the switching device of optical fiber that uses in the daytime.

When slider bar sheet 2 is positioned at the second place and coil 34 and changes the second electric current of conducting and the first opposite current direction into, the first excitation division 331 and second excitation division 332 at yoke 33 two ends will produce respectively magnetic pole N, S.Thus, the magnetic pole that the first excitation division 331 and the second excitation division 332 produce and magnetite 24 interactions (such as Fig. 5 C) with magnetic pole S, N, make the swing arm 311 of shifting part 31 because magnetic interaction swings back primary importance, and then drive slider bar sheet 2 transfer back to primary importance (such as Fig. 4 A).

Thus, when after the first excitation division 331 and the second excitation division 332 are subject to coil 34 excitations, having magnetic direction respectively, so that magnetite 32 rotates and utilize the nose bar 312 of shifting part 31 to stir slider bar sheet 2 and movement between primary importance and the second place, make the light through hole 1111 of pedestal 11 optionally corresponding to the infrared ray cut sheet 23 of slider bar sheet 2 and one of them of infrared penetration sheet 24, for switching device of optical fiber in the daytime or use night.

The effect of embodiment:

According to the above embodiments, switching device of optical fiber of the present utility model, its principal feature is: only a coil need to be set, can reach the purpose of switching optical filter, and directly winding on yoke of coil, can save the operation that coil groups is loaded onto yoke.Owing to be provided with less a coil than prior art, in same pedestal width, can be provided with long swing arm, under identical swing angle, have long swinging distance, the transverse shifting distance of slider bar sheet can be increased, and the magnitude of current need not be increased.A coil only is set, only needs consideration to the angle that magnetizes of magnetite, can reach when switching optical filter and open and the torsion balance that closes.

Moreover, more simplify on the utility model structure, be easy to the processing assembling, can reach the effect that reduces production costs.

In sum, the real important document that has met utility model patent of the utility model is filed an application in accordance with the law.But above disclosed content only is preferred embodiment of the present utility model, and from not limiting interest field of the present utility model with this, the equalization of therefore doing according to application range changes or modifies, and still belongs to the scope that the utility model is contained.

Claims

1. a switching device of optical fiber is characterized in that, comprising:

End in one pedestal, this pedestal is provided with a frame sheet sliding area, and this frame sheet sliding area offers a smooth through hole, and the other end adjacent to this frame sheet sliding area is concaved with a holding part in this pedestal;

One slider bar sheet is arranged at this frame sheet sliding area of this pedestal movably, and this slider bar sheet is provided with an infrared ray cut sheet and an infrared penetration sheet; And

One electromagnetic drive unit, be arranged at this holding part of this pedestal, this electromagnetic drive unit includes a shifting part, one magnetite, one yoke, an and coil, this shifting part one end is connected in this slider bar sheet, this shifting part other end is provided with this magnetite, this coil is set around this yoke, and by the two ends of this yoke respectively symmetrical bending be extended with the first excitation division and the second excitation division, this first excitation division and this second excitation division have respectively an end face, and these both ends of the surface lay respectively at the both sides of this magnetite, after this magnetite is subjected to magneticaction thus, make this light through hole of this pedestal optionally corresponding to this infrared ray cut sheet of this slider bar sheet and one of them of this infrared penetration sheet.

2. switching device of optical fiber as claimed in claim 1, it is characterized in that this slider bar sheet one end has an optical window, this optical window is corresponding to this infrared ray cut sheet and this infrared penetration sheet, this slider bar sheet other end has extended to form a protuberance, and this protuberance has strip fluting.

3. switching device of optical fiber as claimed in claim 2, it is characterized in that, this shifting part has a swing arm, this swing arm one end is extended with a nose bar downwards, this nose bar is arranged in this strip fluting of this slider bar sheet, and this swing arm other end is extended with a pivotal axis downwards, and this magnetite is sheathed and be fixed in this pivotal axis, this holding part has a reference column away from an end of this protuberance, and this pivotal axis is hubbed at this reference column.

4. switching device of optical fiber as claimed in claim 3 is characterized in that, also includes a cover plate, and this cover plate and this pedestal are interlocked, and this cover plate is formed with an opening, and this opening is formed at this cover plate corresponding to the position of this light through hole of this pedestal.

5. switching device of optical fiber as claimed in claim 4 is characterized in that, this magnetite is one to be the magnet of hollow cylindrical.