CN102736360A

CN102736360A - Lens cover

Info

Publication number: CN102736360A
Application number: CN201110090981XA
Authority: CN
Inventors: 张仲仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-12
Filing date: 2011-04-12
Publication date: 2012-10-17

Abstract

The invention discloses a lens cover. The lens cover possesses an outer ring, an inner hoop and two sheet bodies, wherein the outer ring is installed on the lens and is detachable; the inner hoop is limited in the outer ring and carries out reciprocating rotation along an inner ring surface; the two sheet bodies are assembled opposite to each other on the inner hoop, and are opened outwards according to an elasticity, which is a normal state; the each sheet body can be folded and closed on an opening of the outer ring along with the rotation of the inner hoop, which generates effects of protecting the lens surface, shading and the like.

Description

Lens cap

Technical field

The present invention relates to a kind of protection structure of camera lens, refer in particular to a kind of lens cap of tool light shield effect.

Background technology

In the field of lens imaging, common camera, keep watch on equipment or photographic equipment is installed required camera lens, be equipped with lens cap len leading edge and avoid clashing into impaired, and prevent minute surface to be infected with dust and ensure the quality of image.But, seal the lens cap of camera lens, just not unloading can not filmed image, quite inconvenient.

During forming images, can assemble light shield in camera lens the place ahead, cover non-essential light, can stop that also the globule is not sprayed onto the camera lens front, prevent camera lens credit light and make image more clear.Traditional light shield is different from lens cap, and both are two accessories independent of each other, by effects such as shield lights, barrier liquids, and in the time of convenient filming image, the but purpose of forfeiture protection minute surface.How two functions are flocked together, just become problem demanding prompt solution.

In view of this, the inventor is not to attaining perfect many disappearances and the inconvenience that causes on the above-mentioned lens cap structural design, and deeply design, and the active research improvement has a fling at and development and Design goes out this case.

Summary of the invention

The object of the present invention is to provide a kind of lens cap that the protection minute surface has the double effects of shading concurrently that reaches.

In order to reach above-mentioned purpose, solution of the present invention is:

A kind of lens cap comprises: an outer shroud, an interior garter spring, two lamellar bodies;

This dismountable outer shroud is installed on a camera lens; Garter spring in being somebody's turn to do is limited in inside the outer shroud and along inner ring surface and back and forth rotates; Two lamellar bodies, garter spring and raise outward in being assembled in relative to one another according to elasticity, the folding closure is in the opening of outer shroud but each lamellar body rotates along with interior garter spring.

Above-mentioned outer shroud comprises one and is assembled in camera lens and dismountable joint portion; One ring portion of extending outward from the joint portion along radial direction; One diameter is greater than the joint portion and the portion that keeps that links to each other with ring portion; Two protrude in the rail bar of keeping portion's inner ring surface; Two are formed at the breach between each rail bar end respect to one another; Garter spring comprises the groove of two concavo-convex cooperation rail bars in being somebody's turn to do; Two pairs swell in interior garter spring inner face and axle piece respect to one another; Each self-contained a pair of minor axis that is articulated in the respective shaft piece of each lamellar body; Two tips, lamellar body folding and through breach,, block rail bar along with interior garter spring rotates.

Above-mentioned joint portion is configured as one for approaching a ring-type and an end and ring portion, and the other end forms tortuous track in the joint portion; This ring portion has some button holes, and the button portion that forms in the portion of keeping with relative populations produces the clip relation.

Above-mentioned joint portion, ring portion and the portion of keeping are configured as one.

Above-mentioned light shielding part that portion edge outstanding two faces with each other and the stop section that the relative outer shroud of garter spring rotates in the rail bar protuberance one of the portion of keeping is prevented of keeping.

Garter spring comprises a pair of convergence part in above-mentioned, face with each other protrude in garter spring periphery, touch mutually with the stop section along with the rotation of the relative outer shroud of interior garter spring, groove is absorbed in each convergence part in the face of keeping the appearance of portion, an axle piece swells in the inner face of convergence part.

Above-mentioned lamellar body passes a torque spring with the minor axis that inserts the axle piece, this torque spring have one prop up in first foot of garter spring; One withstands second foot of lamellar body.

Above-mentioned lamellar body peripheral frame is enclosed an arc edge and a relative edge, tapers off to a point at arc edge and relative edge's habitat, and the straight length between two tips is less than keeping portion's diameter, and lamellar body is folded in the outer shroud the inside.

Above-mentioned lamellar body has a flange part, and flange part covers one and is provided with in the storehouse portion of another lamellar body during this lamellar body folding.

Above-mentioned flange part extends from the relative edge surface of lamellar body outward; This storehouse portion extends from relative edge's inner face of lamellar body outward.

After adopting said structure, lens cap of the present invention lets closed lens cap raise two lamellar bodies outward according to elastic force with the moment of torsion of torque spring; Cooperate outer shroud both sides light shielding part to cover non-essential light, prevention camera lens credit light produces shaded effect; Can stop that also globule splash on camera lens, makes image more clear.Folding lamellar body closure is when outer ring opening, and related torque spring savings moment of torsion produces the acting force of bounce-back.Reach the purpose of protection minute surface.

Description of drawings

Fig. 1 is the decomposing state stereographic map of lens cap first preferred embodiment of the present invention;

Fig. 2 is the shading action stereographic map of lens cap;

Fig. 3 is the structural perspective of Fig. 2 lens cap partly cut-away;

Fig. 4 is the concrete structure cut-open view after Fig. 2 A-A line is cut open;

Fig. 5 is the closed initial stage action of a lens cap stereographic map;

Fig. 6 is the amplification view at the position of drawing a circle of Fig. 5;

Fig. 7 is the closed later stage action of a lens cap stereographic map;

Fig. 8 is the concrete structure cut-open view after performance Fig. 7 B-B line is cut open;

Fig. 9 is the amplification view at the position of drawing a circle of Fig. 7;

Figure 10 is the stereographic map that lens cap is installed in camera lens;

Figure 11 is the camera lens front stereographic map that lens cap is installed on camera;

Figure 12 is the decomposing state stereographic map of lens cap second preferred embodiment of the present invention;

Figure 13 is the integrated structure three-dimensional cutaway view of first, second unit of partly cut-away;

Figure 14 is the end plane figure of combination lens lid;

Figure 15 is that switch uses the action cut-open view in first module;

Figure 16 is the stereographic map of the corresponding relation of rolled-up stock and camera lens.

The main element symbol description

10 lens caps, 20 outer shrouds, 21 joint portions

22 keep portion's 23 ring portions, 24 light shielding parts

25 inner ring surfaces, 26 rail bars, 27 stop sections

Garter spring 31 first ends in 28 breach 30

32 second ends, 33 latches, 34 convergence parts

36 pieces of 35 grooves, 37 axial ditches

40 first lamellar bodies, 41 arc edge, 42 relative edges

43 most advanced and sophisticated 44 base portions, 45 minor axises

46 flange parts, 50 second lamellar bodies, 51 arc edge

52 relative edges, 53 most advanced and sophisticated 54 base portions

55 minor axises, 56 storehouse portions, 60 torque springs

62 second foots of 61 first foots, 70 camera lenses

71 cameras, 72 pawl part, 80 first modules

82 joint portions, Unit 81 second, 83 ring portions

84 button holes 85 are kept 86 button portions of portion

87 rail sheets, 88 outside tracks, 89 inner orbits

90 switches, 91 rolled-up stocks, 92 prevention portions

93 holes, 94 clamping structures, 95 caulking grooves

96 collude body.

Embodiment

In order further to explain technical scheme of the present invention, come the present invention is set forth in detail through specific embodiment below.

See also Fig. 1 to Fig. 3, the lens cap 10 of present embodiment comprises an outer shroud 20, is installed on photographic equipment and detachable; Garter spring 30 in one is linked in outer shroud 20 inside rotationally; One first lamellar body 40 and one second lamellar body 50 on the garter spring 30, can be raised according to elasticity in opposed facing being assembled in outward, or bend toward each other closed, jointly along with interior garter spring 30 rotations and block, in order to seal the opening of outer shroud 20.

This outer shroud 20 is thin ring plate design, has the joint portion 21 and the large diameter portion 22 that keeps of a minor diameter, in joint portion 21 and keep and extend a ring portion 23 along radial direction between the portion 22, remedies the gap of both diameters.

This joint portion 21 is according to needing to form internal thread or external thread (accompanying drawing does not show), and camera lens the place ahead is able to lock.Alleged here camera lens, general reference is kept watch on the camera lens 70 (seeing Figure 10 for details) of equipment or photographic equipment.Certainly, outer shroud 20 also can use on the camera lens of camera 71 and (see Figure 11 for details).

This keeps a pair of light shielding part 24 of portion's 22 periphery shapings, and the shape symmetry of light shielding part 24 is also high more than the portion's of keeping 22 remaining edges, and at the portion's of keeping 22 inner ring surfaces, 25 outstanding two rail bars 26.This rail bar 26 protuberances one stop section 27, its two ends lay respectively at the scope of light shielding part 24, across both set a distance was relative with other end of a rail bar 26, and then form a pair of breach 28.

Interior garter spring 30 in the accompanying drawing; Be to surround into discontinuous arc body according to curvature; Two ends are defined as first end 31 and second end 32, overlap according to concavo-convex matching model, reduce interior garter spring 30 circumference and insert the portion of keeping 22 the insides; Unclamping the back just can be limited between ring portion 23 and the rail bar 26 according to the elastic recovery original state.Dialling changes interior garter spring 30, makes folded mutually first end 31 and second end 32 move to breach 28, by a latch 33 series connection two ends 31,32, can stop the circumference of garter spring 30 in the external force change, can not leave outer shroud 20 naturally.

Should comply with axially outstanding a pair of convergence part 34 by interior garter spring 30 peripheries; Two convergence parts 34 face with each other and the shape symmetry; And be absorbed in a groove 35 in each convergence part 34 appearance, with corresponding rail bar 26 concavo-convex cooperations, garter spring 30 rotates along inner ring surface 25 to and fro in the guiding; Till the edge that has a common boundary with interior garter spring 30 up to convergence part 34 touches stop section 27, let convergence part 34 face the low-lying place at outer shroud 20 edges just.In addition, a pair of axle of this convergence part 34 inner faces protuberance piece 36, and the axial ditch 37 that is shaped at means for two very close shafts piece 36 places.The axial ditch 37 of present embodiment is formed between the two parallel bars.

Two lamellar bodies 40,50 are gradually smooth toward the both sides from the middle part of arching upward, and periphery forms an arc edge 41,51 and a relative edge 42,52, and form two most advanced and sophisticated 43,53 at arc edge 41,51 and relative edge's 42,52 habitats.With regard to first lamellar body 40, the straight length between two most advanced and sophisticated 43 is enough to let outer shroud 20 hold folding first lamellar body 40 less than the portion's of keeping 22 diameters.Likewise, the second similar lamellar body 50 of shape also can be folded in outer shroud 20 the insides.Especially; Two lamellar bodies 40, the 50 crooked base portion 44,54 that all is shaped in arc edge 41,51 stage casings; Each base portion 44,54 extends a minor axis 45,55 respectively toward the both sides, passes in the corresponding axle piece 36 of a torque spring 60 and insertion, and be that the axle center lets the internal mutually garter spring 30 of two lamellar bodies 40,50 rotate with minor axis 45,55; And each base portion 44,54 is not run into the portion of keeping 22 and is not given birth to interference.Wherein, first lamellar body, 40 relative edges 42 extend the flange part 46 of a thinner thickness outward, and flange part 46 inner faces cooperate relative edge 42 to form sinking space; The storehouse portion 56 that second lamellar body, 50 relative edges 52 also extend a thinner thickness outward; It is just the opposite that only storehouse portion 56 appearances cooperate the orientation of relative edge's 52 formation sinking space; Can be in opposite directions during folding at two lamellar bodies 40,50; Let flange part 46 cover on storehouse portion 56, keep the planarization of two lamellar bodies, 40,50 appearances.

Above-mentioned

minor axis

45,55 is not subject to one-body molded technology, can also adopt suites of measure, serves as minor axis with independent club and uses, and penetrates the axle piece and corresponding base portion of convergence part without leave.Certainly, do not get rid of the possibility that other means of being coupling are implemented yet.

Then, be example with one of them lamellar body, the technology contents that statement is raised.See that torque spring 60 is distinguished one first foot 61 and one second foot 62 according to the spiral kenel toward two ends in that Fig. 4 is clear, wherein, in first foot 61 inserts in the axial ditch 37 of garter spring 30, generation resistancing action and being failure to actuate is considered as initiating terminal.Second foot 62 penetrates base portion 54 and touches mutually with second lamellar body, 50 inner faces, withstands second lamellar body 50 and raises outward and be normality, or be pressed and swing in the same way in response to second lamellar body, 50 foldings action, and both possess the interactive relationship of flexible action, regard it as movable end.Second lamellar body of raising outward 50 cooperates outer shroud 20 both sides light shielding parts 24 to cover non-essential light, and prevention camera lens credit light produces shaded effect, can stop that also globule splash on camera lens, makes image more clear.Folding second lamellar body 50 closures are when outer shroud 20 openings, and related torque spring 60 savings moments of torsion produce the acting force of bounce-back.

Fig. 5, Fig. 6 show the closed initial stage; First lamellar body 40 is with flange part 46 compactings second lamellar body 50, and the height of two

lamellar bodies

40,50 is then forced down just through corresponding breach 28 in

tip

43,53 adjacent one another are; Let the rail bar 26 of outer shroud 20 be higher than most advanced and sophisticated 43,53; Could control the ridge in the middle of the

lamellar body

40,50, dial the angle of changeing certain (because the existence of stop section 27, stopping that

lamellar body

40,50 can not counterclockwise rotates) clockwise along accompanying drawing.

Fig. 7 to Fig. 9 shows the closed later stage, and most advanced and sophisticated 43,53 along with

lamellar body

40,50 rotates and move on to rail bar 26 belows, stops

lamellar body

40,50 to be raised outward by the moment of torsion of torque spring 60 (seeing Fig. 4 for details), and rail bar 26 props up

tip

43,53 and produces the clip relation.As long as with 40,50 groups of states that forward Fig. 5 to of two lamellar bodies; Just can let closed lens cap 10 raise two

lamellar bodies

40,50 outward according to elastic force with the moment of torsion of torque spring 60 (seeing Fig. 4 for details), not only operation be quite simple; Also can improve the lens cap existing structure, have the effect of light shield concurrently.

Because it is various to keep watch on the specification of equipment or photographic equipment, lens cap of the present invention according to the aforementioned structure following examples of still can deriving, uses in suitable camera lens the place ahead.

Figure 12 to Figure 15 display device skull 10, the structure that is different from previous embodiment is: outer shroud 20 is not a necessary means with one-body molded, changes the technology of adopting combination and can split into two the independently first module 80 and second unit 81.

This first module 80 is joint portions 82 of thin ring-type, and a ring portion 83 is extended along radial direction in one of two ends, and runs through five button holes 84 near the position of ring portion 83 outer rims according to five equilibrium.These joint portion 82 other ends are then erect the rail sheet 87 that neither links to each other at inner face; Each rail sheet 87 S-shaped lamellar body surrounds a disconnected outside track 88 and an inner orbit 89, and this outside track 88 (inner orbit 89) can only lead to the inner orbit 89 (outside track 88) of other a rail sheet 87 and form tortuous track.

This Unit second 81 is portions that keep 85 of thin ring-type, gives prominence to five button portions 86 in the face of the end of first module 80 according to five equilibrium, inserts ring portion 83 corresponding button holes 84 and produces clip relation and difficult the disengaging, makes two

unit

80,81 constitute combined type outer shrouds 20.

Thus; The outside track 88 of outer shroud 20 just can alignd and insert to outstanding two pawl part 72 of camera lens 70 peripheries; Twist outer shroud 20 relative camera lens 70 rotations then; Cause pawl part 72 to get into inner orbit 89 inside that communicate, can not pull away, reach the effect that lens cap 10 combines camera lens 70 fast with rail sheet 87 restriction pawl part 72.

It should be noted that this outside track 88 changes the position of inner orbit 89 over to, be equivalent to the separate each other end of suitable distance of each rail sheet 87, a switch 90 and a rolled-up stock 91 are installed respectively.

A L shaped prevention portion 92 is extended in these switch 90 belows, through one run through joint portion 82 hole 93 go deep into first module 80 inside.82 axis directions are toward outer displacement along the joint portion when switch 90, and outside track 88 and inner orbit 89 intersections can be blocked by prevention portion 92, stop pawl part 72 to return outside track 88 from inner orbit 89.If switch 90 slides according to Figure 15 direction of arrow, then prevention portion 92 backs out towards second unit 81, makes outside track 88 and inner orbit 89 keep unimpeded, could let pawl part 72 return outside track 88, takes off lens cap 10 simultaneously.In addition, this prevention portion 92 clamping structure 94 that is shaped possesses chamfering structure and offsets with hole 93 peripheral wall surface, makes switch 90 be difficult for leaving first module 80.

See Figure 16 again; These rolled-up stock 91 T-shaped bodies, the caulking groove 95 of first module 80 correspondences is inserted in the both sides, causes rolled-up stock 91 to be colluded body 96 by one and fastens; The elasticity of utilization itself causes first module 80 to nestle up camera lens 70 to bestowing repressive kinetic energy through 91 pairs of pawl part 72 of rolled-up stock.

The foregoing description and accompanying drawing and non-limiting product form of the present invention and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from patent category of the present invention to its suitable variation or modification of doing.

Claims

1. a lens cap is characterized in that, comprising:

One dismountable outer shroud is installed on a camera lens;

Garter spring in one is limited in inside the outer shroud and along inner ring surface and back and forth rotates;

Two lamellar bodies, garter spring and raise outward in being assembled in relative to one another according to elasticity, the folding closure is in the opening of outer shroud but each lamellar body rotates along with interior garter spring.

2. lens cap according to claim 1, it is characterized in that: this outer shroud comprises one and is assembled in camera lens and dismountable joint portion; One ring portion of extending outward from the joint portion along radial direction; One diameter is greater than the joint portion and the portion that keeps that links to each other with ring portion; Two protrude in the rail bar of keeping portion's inner ring surface; Two are formed at the breach between each rail bar end respect to one another;

Garter spring comprises the groove of two concavo-convex cooperation rail bars in being somebody's turn to do; Two pairs swell in interior garter spring inner face and axle piece respect to one another;

Each self-contained a pair of minor axis that is articulated in the respective shaft piece of each lamellar body; Two tips, lamellar body folding and through breach,, block rail bar along with interior garter spring rotates.

3. like the said lens cap of claim 2, it is characterized in that: this joint portion is configured as one for approaching a ring-type and an end and ring portion, and the other end forms tortuous track in the joint portion; This ring portion has some button holes, and the button portion that forms in the portion of keeping with relative populations produces the clip relation.

4. like the said lens cap of claim 2, it is characterized in that: this joint portion, ring portion and the portion of keeping are configured as one.

5. like claim 2,3 or 4 said lens caps, it is characterized in that: this keeps the light shielding part that portion edge outstanding two faces with each other, and the stop section that the relative outer shroud of garter spring rotates in the rail bar protuberance one of the portion of keeping is prevented.

6. like the said lens cap of claim 5; It is characterized in that: garter spring comprises a pair of convergence part in this; Face with each other protrude in garter spring periphery; Touch mutually with the stop section along with the rotation of the relative outer shroud of interior garter spring, groove is absorbed in each convergence part in the face of keeping the appearance of portion, and the axle piece swells in the inner face of convergence part.

7. like the said lens cap of claim 2, it is characterized in that: this lamellar body passes a torque spring with the minor axis that inserts the axle piece, this torque spring have one prop up in first foot of garter spring; One withstands second foot of lamellar body.

8. like claim 2 or 7 said lens caps, it is characterized in that: this lamellar body peripheral frame is enclosed an arc edge and a relative edge, tapers off to a point at arc edge and relative edge's habitat, and the straight length between two tips is less than keeping portion's diameter, and lamellar body is folded in the outer shroud the inside.

9. like the said lens cap of claim 8, it is characterized in that: this lamellar body has a flange part, and flange part covers one and is provided with in the storehouse portion of another lamellar body during this lamellar body folding.

10. like the said lens cap of claim 9, it is characterized in that: this flange part extends from the relative edge surface of lamellar body outward; This storehouse portion extends from relative edge's inner face of lamellar body outward.