CN201438235U

CN201438235U - Light filter sliding structure

Info

Publication number: CN201438235U
Application number: CN2009201506814U
Authority: CN
Inventors: 钟金昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-05-18
Filing date: 2009-05-18
Publication date: 2010-04-14
Anticipated expiration: 2019-05-18

Abstract

The utility model provides a light filter sliding structure which comprises a shell body, a sliding sheet and an outer cover. A slide groove is arranged in the rectangle shell body and a through hole window is arranged in the middle of the slide groove. Certain turns of coils are respectively coiled on both sides of the shell body. The sliding sheet is a sheet body accommodated in the slide groove with the length less than the slide groove. Permanent magnet bodies are assembled on the two edges of the sliding sheet, a light filter is arranged between two adjacent through holes between the two permanent magnet bodies. The outer cover is a sheet body covers the slide groove, and a through hole window is arranged in the center of the outer cover corresponding to the shell body. When the current directions of the coils on both sides of the shell body are controlled to generate a magnetic field for having suction or repellence effect with the magnet bodies of the sliding sheet, the sliding sheet is driven by magnetic force to slide to control one of the light filters to move to the window position.

Description

A kind of optical filter slide construction

Technical field

The utility model relates to a kind of optical filter slide mechanism, relates in particular to a kind of volume magneticaction little, that utilize coil and magnetic and makes optical filter produce the optical filter slide construction that moves.

Background technology

Optical filter is to use at one of phtographic lens the next item up aid, especially at the phtographic lens that used as 24 hours, because daytime, light was stronger, therefore the light amount of phtographic lens collection will have too high and cause the bright excessively situation of image, therefore need to use light ray energy that optical filter can't see naked eyes (as ultraviolet ray, infrared ray etc.) filtering in addition, make phtographic lens can collect an amount of light and image, but when night, because insufficient light, even therefore naked eyes can't see that light ray energy promptly also helps to improve the resolution of image, therefore the use of optical filter does not at this moment just have its necessity and removes from the phtographic lens reach.

Prior art has uses the sliding sheet of drive motor one carrying optical filter to switch with the use that reaches optical filter, but the volume of CD-ROM drive motor is comparatively huge compared to housing, relatively when this drives structure is set, must consume bigger accommodation space, make the volume of total system to reduce effectively, therefore allow system obtain effectively to utilize.

In addition as tw Taiwan patent application case number 92132271 and 95210739 disclosed optical filter sliding technologies, all be to use and one include housing that central authorities are provided with the form hole, it is provided with optical filter, and periphery be provided with coil sliding sheet, be separately positioned on housing in the opposite mode of magnetic two magnetics in the hole be set.By the said structure design, when coil electricity, described coil just can produce magnetic field effect, makes sliding sheet to move in housing with respect to the magnetic field of magnetic, so that optical filter can be aimed at the form hole or the fenestra place of considering oneself as removes.Yet this type of design is because be arranged at coil on the sliding sheet that can slide, and after using for a long time, lead is constantly pullled, and move can be impaired gradually and rupture, and causes long problem in serviceable life.

Summary of the invention

In view of this utility model creator actively studies improvement, in the hope of the optical filter that a kind of volume is littler, the life-span is longer drives structure can be provided, and then solves above-mentioned existing issue, through constantly test and effort, develops the utility model finally.

Fundamental purpose of the present utility model is to provide a kind of volume little, optical filter slide construction simple in structure and durable.Utilize coil magnetic field and magnetic effect that optical filter is slided and be used the operation of environment.By coil is arranged on the fixing housing, and magnetic is arranged on the slide, can avoids lead day by day to damage or fracture because of constantly sliding.

For reaching above-mentioned purpose, the utility model provides a kind of optical filter slide construction, and it comprises a housing, slide and enclosing cover.Described housing is a rectangle, and a chute is arranged in it, is provided with an open-work form in the middle of the chute.Described housing both sides are wound with the coil of a fixing turn respectively.Described slide is that a big I is placed in chute, length is the lamellar body little than chute.Place, the two edges dress of slide respectively is provided with a permanent magnetism body, has two adjacent open-works can be provided with optical filter in the middle of two magnetics.Described enclosing cover is one can be covered in the lamellar body of chute, is provided with an open-work form corresponding with housing in central authorities.Make it to produce and inhale mutually and the time spent of doing of repelling each other when the energising direction of the coil of control housing both sides produces magnetic field with the magnetic of slide, can make slide slided by magnetic force and may command in addition one of them optical filter move to the form position.

Compared with prior art, optical filter slide construction described in the utility model.Utilize coil magnetic field and magnetic effect that optical filter is slided and be used the operation of environment.By coil is arranged on the fixing housing, and magnetic is arranged on the slide, can avoids lead day by day to damage or fracture because of constantly sliding.

Description of drawings

Fig. 1 is the exploded view of a preferred embodiment of the present utility model; (as after, need add optical filter light transmission piece magnetic, coil must the cover upper shell)

Fig. 2 is the synoptic diagram of a preferred embodiment of the present utility model; (constitutional diagram)

Fig. 3 is the synoptic diagram of embodiment running of the present utility model; (moving to the left)

Fig. 4 is the synoptic diagram of embodiment running of the present utility model.(moving to the right)

Description of reference numerals: housing-10; Side-11; Side-12; Coil-110; Coil-120; Chute-130; Form-140; Slide-20; Side-21; Side-22; Open-work-23; Open-work-24; Magnetic-210; Magnetic-220; Optical filter-230; Light transmission piece-240; Enclosing cover-30; Form-340.

Embodiment

Cooperate the accompanying drawing of the utility model preferred embodiment to further describe again, in the hope of making the personage who is familiar with the utility model correlation technique, the statement of De Yiben instructions is implemented according to this.

One preferred embodiment of optical filter slide construction of the present utility model comprises following elements as shown in Figure 1:

One housing 10 has a chute 130 in the described rectangle housing 10, be provided with an open-work form 140 in the middle of the chute 130.Described housing 10 dual-sides 11,12 are wound with the

coil

110 and 120 of a fixing turn respectively, and described two coils are that same lead oppositely twines respectively each other.

One slide 20, described slide 20 are that a big I is placed in chute 130, length and is the lamellar body little than chute 130.The length direction that dress each gummed in dual-side 21,22 places of slide 20 has a permanent magnetism body 210,220, two magnetic poles of magnetic to prolong slide is arranged, the N utmost point of magnetic 210 outside slide 20 and the S utmost point of magnetic 220 outside slide 20.Slide 20 has two adjacent open-works 23,24 in the middle of two magnetics, described open-work 23 gummeds one optical filter 230, and described open-work 24 gummeds one light transmission piece 240.

Described enclosing cover 30 is one can be covered in the lamellar body of chute 130, and slide 20 is fixed in the chute 10, is provided with an open-work form 340 corresponding with the form 140 of housing 10 in described enclosing cover 30 central authorities.

According to the right-hand rule, as shown in Figure 3, when coil 110 that continues to impose housing 10 both sides and 120 1 bias voltages, the electric current of lead of flowing through will produce magnetic fields in two

coils

110 and 120, and magnetic direction is opposite, just produce N pole field and the outside when producing the S pole field in inboard (slide place) when coil 110, coil 120 then can produce the S pole field and produce the N pole field in the outside at inboard (slide place).Again because the N utmost point magnetic pole of the magnetic 210 of slide 20 towards coil 110, so produce repulsive interaction.And on the other hand, the S utmost point magnetic pole of magnetic 220 is towards coil 120, so produce attractive force.Slide then can be because of the acting force of both sides move to a precalculated position toward coil 120, and the form 140 that open-work 23 and the gummed optical filter 230 thereon with respect to the moving direction rear can be exposed to housing 10 and enclosing cover 30 and 340 times.In like manner, as shown in Figure 4, by continuing to impose coil 110,120 1 reverses biased magnetic direction is changed, then force direction also changes form 140 that the open-work 24 that makes slide 20 and gummed light transmission piece 240 thereon be exposed to housing 10 and enclosing cover 30 and 340 times thereupon.

The binding of magnetic 210,220 and coil 110,120 is not limited to above-mentioned expositor in this case, and wherein as long as magnetic 210,220 is forward binding, and the direction of winding of coil 110,120 is that oppositely coiling gets final product.

To sum up institute is old, only is preferred embodiment of the present utility model, is not to be used for limiting the scope that the utility model is implemented.Be that all equalizations of being done according to the utility model claim change and modification, all contained by the utility model claim.

Claims

1. optical filter slide construction is characterized in that it comprises:

One housing, described housing is provided with the chute of an elongated, and the both sides of described housing are respectively equipped with conductor coils, and described chute central authorities have one to be the form of an open-work;

One slide is one can be placed in the short lamellar body of the more described chute of described chute, length; The place, two edges of described slide respectively is equiped with a permanent magnetism body, and two magnetic poles of this magnetic become forward to arrange along the length direction of described slide, and a magnetic pole of this magnetic is towards the coil that is adjacent to described housing mutually; Described slide has two adjacent open-works in the middle of described two magnetics, have at least an open-work to be provided with an optical filter;

One enclosing cover is one can be covered in the lamellar body of described chute, and fixedly slide is provided with an open-work form corresponding with described housing in described enclosing cover central authorities in described chute;

Make described housing and the magnetic of described slide produce the time spent of doing that an end is inhaled mutually and the other end repels each other when the direction of current of the coil of control described housing both sides produces magnetic field, can make described slide forced-slip and make the open-work of holding near repelling each other move to the correspondence position of the form of described housing and described enclosing cover.

2. optical filter slide construction as claimed in claim 1 is characterized in that, the coil of described housing both sides is that same lead twines a pre-fixing turn in the opposite direction, and the permanent magnetism body of described slide both sides is opposite each other towards the magnetic pole of its correspondence ring.

3. optical filter slide construction as claimed in claim 1 is characterized in that, the coil of described housing both sides is that same lead twines a pre-fixing turn with equidirectional, and the permanent magnetism body of described slide both sides is identical each other towards the magnetic pole of its correspondence ring.

4. as claim 2 or 3 described optical filter slide constructions, it is characterized in that described slide is two adjacent open-works in the middle of two magnetics, and an optical filter and a light transmission piece can be installed.