CN101598885B - Lens dustproof cover - Google Patents
Lens dustproof cover Download PDFInfo
- Publication number
- CN101598885B CN101598885B CN2008101089981A CN200810108998A CN101598885B CN 101598885 B CN101598885 B CN 101598885B CN 2008101089981 A CN2008101089981 A CN 2008101089981A CN 200810108998 A CN200810108998 A CN 200810108998A CN 101598885 B CN101598885 B CN 101598885B
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- China
- Prior art keywords
- blade
- shielding portion
- connecting rod
- pedestal
- swing arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Blocking Light For Cameras (AREA)
- Studio Devices (AREA)
Abstract
The present invention relates to a lens dustproof cover comprising a base, a pair of blades and an actuating connecting rod, wherein the blades are mounted on the front face of the base, and the actuating connecting rod is mounted at the back of the base; the rotation of the actuating connecting rod can drive the blades to make opening or closing actions; each blade comprises swinging arms and shielding parts; each swinging arm is sleeved on a corresponding blade pillar on the base and driven by the actuating connecting rod to rotate around the blade pillar; and each shielding part is sleeved on a corresponding shielding part pillar at the outer end of each swinging arm by a shaft hole arranged on the shielding part so that the shielding part can rotate around the shielding part pillar corresponding to the swinging arm while the swinging arm rotates and makes the opening or closing actions. Each shielding part of each blade can freely rotate relative to a swinging arm at a local angle and the two shielding parts can automatically adjust a closing angle if the two blades to be closed have unbalanced closing elastic force so that the lens dustproof cover can be fully closed and dust is better prevented from entering.
Description
Technical field
The present invention relates to the lens dustproof cover of use in image-forming apparatus such as camera, more particularly, relate to a kind of lens dustproof cover with impeller clearance correcting mechanism.
Background technology
At many image capture equipment, for example all be provided with dust cap on the camera lens of mobile phone, minicam and slim camera at present, when the camera lens of camera is taken in, two blade closures of dust cap, thus block camera lens, avoid dust to fall into.
Shown in Figure 1 is the three-dimensional explosive view of a kind of dust cap of the prior art.This dust cap mainly by pedestal 1, be installed in the pedestal 1 positive 14 a pair of blade 21 and 22 and the start connecting rods 3 that are installed in pedestal 1 back side 15 form (shown in Fig. 3 B).Pedestal 1 middle part offers the center pit 11 that runs through, and takes in for camera lens.A pair of blade 21 and 22 roughly is blade shapes, has the bigger shielding portion of area 211,221 respectively and from shielding portion 211, the 221 ends extended Actuator Division 213,223 that forms an angle.The joint of shielding portion 211,221 and Actuator Division 213,223 is provided with axis hole 212,222, is used for blade 21 and 22 is socketed in blade pillar 121 and 122 on the front 14 of pedestal 1 respectively.Actuator Division 213,223 ends of blade 21,22 are respectively equipped with the hook of pendulum spring 41,42, shown in number in the figure 2231.
As shown in Figure 1, start connecting rod 3 substantially in the form of a ring, the through hole 35 that runs through is offered at the middle part, to dodge out center pit 11.Shown in Fig. 2 A and Fig. 2 B, start connecting rod 3 is installed in the back side 15 of pedestal 1, and corresponding spring stack 32 and 33 that is provided with passes the slide opening 131 and 132 and stretch out from the front 14 of pedestal 1 on the pedestal 1 respectively on it.The other end that is used to control the spring 41,42 of blade closing motion is suspended on the spring stack 32 and 33 that stretches out from pedestal 1 front 14 respectively, and spring stack 32 and 33 end also are provided with hook 321 and 331 to prevent that spring from coming off.Thereby spring 41,42 gets up 213,223 interlocks of the Actuator Division on spring stack on the start connecting rod 3 32,33 and the blade 21,22 respectively.
When the Actuator Division 31 of external drive source by start connecting rod 3 promotes start connecting rods 3 (being rotated counterclockwise shown in arrow among Fig. 2 B) when the slide opening on the pedestal 1 131,132 rotates, be that spring stack 32,33 among Fig. 2 A turns clockwise in slide opening 131,132 respectively, thus extension spring 41,42.The elastic force of spring 41,42 and then the Actuator Division 213,223 that spurs blade 21,22 respectively are rotated counterclockwise around blade pillar 121,122, simultaneously, the shielding portion 211,221 of blade 21,22 also is rotated counterclockwise (shown in arrow among Fig. 2 A) around blade pillar 121,122 respectively, thereby inwardly rotate from both sides, close the center pit 11 on the pedestal 1 gradually.When start connecting rod 3 turned to certain position, shown in Fig. 3 A and 3B, blade 21 and 22 was closed the center pit 11 of pedestal 1 fully, to shelter from camera lens.At this moment, the blade that the two ends 52,51 (as shown in Figure 1) that blade is opened spring 5 are connected to start connecting rod 3 is opened the blade at the spring newel post 34 and pedestal 1 back side 15 and is opened in the spring newel post 16, thereby blade is opened spring 5 and is stretched because of the rotation of start connecting rod 3.When needs are opened dust cap, the external drive source that acts on the Actuator Division 31 of start connecting rod 3 is removed, blade is opened spring 5 and is shunk moving connecting rod 3 backward rotation (turning clockwise among Fig. 3 B) of elastic band action that produce, be that spring stack 32,33 among Fig. 3 A is rotated counterclockwise in slide opening 131,132 respectively, thus compression spring 41,42.The elastic force of spring 41,42 and then the Actuator Division 213,223 that promotes blade 21,22 respectively turn clockwise around blade pillar 121,122, simultaneously, the shielding portion 211,221 of blade 21,22 also turns clockwise around blade pillar 121,122 respectively, thereby rotate to both sides from closed condition, open the center pit 11 on the pedestal 1 gradually.When start connecting rod 3 rotated back into initial position, shown in Fig. 2 A and 2B, blade 21 and 22 was opened the center pit 11 of pedestal 1 fully, so that camera lens stretches out.
Lens dustproof cover shown in Figure 1 adopts the integral type blade, and external force drives the start connecting rod and closes spring by two blades and drives a pair of blade and do closed action.But, the defective of this integral type blade is, when not of uniform size the causing of strength that two blades close spring, the anglec of rotation of two blades may be different, thereby cause two blades to close degree varies, prop up mutually and cause center pit to cover not exclusively, this moment, dust was fallen in the camera lens easily, and filming image is caused interference.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned defective of prior art, provides a kind of dust cap that can carry out revisal to the impeller clearance.
The technical solution adopted for the present invention to solve the technical problems is: a kind of lens dustproof cover is provided, comprise pedestal, the start connecting rod that is installed in a pair of blade in pedestal front and is installed in the pedestal back side, the rotation of described start connecting rod can drive described a pair of blade and make on-off action, wherein, each blade in the described a pair of blade includes swing arm and shielding portion, described swing arm is socketed on the pedestal on the corresponding blade pillar and is subjected to the driving of start connecting rod and rotates around described blade pillar, described shielding portion is connected on the shielding portion pillar of swing arm outer end correspondence by the shaft hole sleeve that is provided with on it, makes described shielding portion can rotate with respect to described swing arm around described shielding portion pillar when making on-off action with described swing arm rotation.
Implement lens dustproof cover of the present invention, have following beneficial effect: the shielding portion of the dust cap design blade of the embodiment of the invention can be done freely turning round of local angle with respect to swing arm, when blade is closed, close spring strength inequality as two blades, two shielding portions can be because of the mutual stressed closing angle of adjusting automatically, it is fully closed relatively to reach two shielding portions, and dust cap cuts out fully, can better avoid dust to enter.
Description of drawings
Fig. 1 is the three-dimensional explosive view of a kind of dust cap in the prior art;
Fig. 2 A is the front elevation of dust cap shown in Figure 1 under open mode;
Fig. 2 B is the rear view of dust cap shown in Figure 1 under open mode;
Fig. 3 A is the front elevation of dust cap shown in Figure 1 under in off position;
Fig. 3 B is the rear view of dust cap shown in Figure 1 under in off position;
Fig. 4 is the three-dimensional explosive view of the dust cap of one embodiment of the invention;
Fig. 5 A be the dust cap of one embodiment of the invention under open mode just
Figure;
Fig. 5 B is the back of the body of the dust cap shown in Fig. 5 A under open mode
Figure;
Fig. 6 A is the front elevation of dust cap under open mode of one embodiment of the invention;
Fig. 6 B is the rear view of the dust cap shown in Fig. 6 A under open mode;
Fig. 7 A is the front elevation of dust cap under in off position of one embodiment of the invention;
Fig. 7 B is the rear view of the dust cap shown in Fig. 7 A under in off position.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Fig. 4 is the three-dimensional explosive view of the dust cap of one embodiment of the invention.As shown in Figure 4, this dust cap comprises pedestal 1, is installed in first blade 21, second blade 22 in the pedestal 1 positive 14 and is installed in start connecting rod 3 in pedestal 1 back side 15.Pedestal 1 is roughly a disc-shape, has front 14 and the back side 15 (seeing Fig. 5 B).The middle part of pedestal 1 offers the center pit 11 of passed through said front surface to the back side, stretches out and takes in for camera lens.The both sides of symmetry are respectively equipped with the first blade pillar 121 and the second blade pillar 122 on the front 14 of pedestal 1, are used to install first blade 21 and second blade 22.At the side of the first blade pillar 121 and the second blade pillar 122,, close spring stack 32 and 33 for start connecting rod 3 by the blade on it and rotate along this slide opening along circumferentially offering first slide opening 131 and second slide opening 132 respectively.Also be symmetrically arranged with first positive stop lug boss 171 and second positive stop lug boss 172 on the outer rim in the front 14 of pedestal 1, first positive stop lug boss 171 and second positive stop lug boss 172 are used for limiting the maximum position that blade 21,22 is opened on pedestal 1 when two blades 21,22 are opened, and further limit blade 21,22 produces revolution under open mode.Positive stop lug boss 171,172 will be described follow-up providing more specifically with cooperating of blade 21,22.
As shown in Figure 4, the blade of the embodiment of the invention is made of swing arm and two parts of shielding portion, and promptly first blade 21 comprises that first swing arm 61 and first shielding portion, 71, the second blades 22 comprise second swing arm 62 and second shielding portion 72.Wherein, first swing arm 61 comprise Actuator Division 615 and from the Actuator Division the 615 ends extended arm that forms an angle, the joint of Actuator Division and arm is provided with axis hole 611, is used for this first swing arm 61 is socketed in the first blade pillar 121 of pedestal 1.Equally, second swing arm 62 comprise Actuator Division 625 and from the Actuator Division the 625 ends extended arm that forms an angle, the joint of Actuator Division 625 and arm is provided with axis hole 621, is used for this second swing arm 62 is socketed in the second blade pillar 122 of pedestal 1.The arm outer end of two swing arms 61,62 also is respectively equipped with the first shielding portion pillar 612 and the second shielding portion pillar 622, be respectively applied for socket first shielding portion 71 and second shielding portion 72, make win shielding portion 71 and second shielding portion 72 can be respectively around this pillar 612 and 622 rotations.Specifically in conjunction with shown in Fig. 4 and Fig. 5 A, the outside, the middle part of first shielding portion 71 and second shielding portion 72 is respectively equipped with axis hole 711 and axis hole 721.First shielding portion 71 is connected on the first shielding portion pillar 612 of first swing arm 61 by its axis hole 711 slip caps, second shielding portion 72 is connected on the second shielding portion pillar 622 of second swing arm 62 by its axis hole 721 slip caps, the shielding portion 71 of winning can be rotated with respect to first swing arm 61 around the first shielding portion pillar 612, and second shielding portion 72 can rotate around the second shielding portion pillar 622 with respect to second swing arm 62.
In addition, first shielding portion 71 extends first limiting section 713 at the end near swing arm 61.Shown in Fig. 5 A, first shielding portion 71 is socketed on the first shielding portion pillar 612 of first swing arm 61 by axis hole 711 after, first limiting section 713 just in time is in first swing arm 61 between two limited posts 613 and 614 that are provided with, thereby defines the angle of first shielding portion 71 around 612 rotations of the first shielding portion pillar.Equally, second shielding portion 72 extends second limiting section 723 at the end near swing arm 62.Second shielding portion 72 is socketed on the second shielding portion pillar 622 of second swing arm 62 by axis hole 721 after, second limiting section 723 just in time is in second swing arm 62 between two limited posts 623 and 624 that are provided with, thereby defines the angle of second shielding portion 72 around 622 rotations of the second shielding portion pillar.In addition, Actuator Division 615,625 ends of first swing arm 61 and second swing arm 62 also are respectively equipped with and hang the hook that blade closes spring 41 and 42, shown in label among Fig. 4 6251.
As shown in Figure 4, start connecting rod 3 substantially in the form of a ring, the through hole 35 that runs through is offered at the middle part, to dodge out center pit 11.Shown in Fig. 5 B, start connecting rod 3 is installed in the back side 15 of pedestal 1, and corresponding blade that is provided with closes spring stack 32 and 33 and passes slide opening 131 and 132 and stretch out from the front 14 of pedestal 1 on the pedestal 1 respectively on it.The other end that is used to control the spring 41,42 of blade closing motion is suspended on the spring stack 32 and 33 that stretches out from pedestal 1 front 14 respectively, and spring stack 32 and 33 end also are provided with hook 321 and 331 to prevent that spring from coming off.Thereby blade closes spring 41,42 respectively with 615,625 interlocks of the Actuator Division in spring stack on the start connecting rod 3 32,33 and the swing arm 61,62.In addition, the position of closing spring stack 32,33 away from blade on the start connecting rod 3 also is provided with Actuator Division 31, is used for being driven by external drive source, and also is provided with blade and opens spring newel post 34, is used to hang the end that blade is opened spring 5.On the back side 15 of pedestal 1, also be provided with blade accordingly and open spring newel post 16, be used to hang the other end that blade is opened spring 5.
The blade of introducing the dust cap of the embodiment of the invention below with reference to Fig. 6 A, 6B, 7A, 7B is opened the implementation procedure with the blade closing motion, wherein Fig. 6 A and Fig. 6 B are respectively front elevation and the rear views under the open mode, and Fig. 7 A and Fig. 7 B are respectively front elevation and the rear views under the closed condition.
When the Actuator Division 31 of external drive source by start connecting rod 3 promotes start connecting rods 3 (being rotated counterclockwise shown in arrow among Fig. 6 B) when the slide opening on the pedestal 1 131,132 rotates, be spring stack 32,33 among Fig. 6 A when turning clockwise in slide opening 131,132 respectively, the stretching blade closes spring 41,42.The Actuator Division 615,625 that blade closes the elastic force of spring 41,42 and then spurs swing arm 61,62 respectively is rotated counterclockwise around blade pillar 121,122, simultaneously, be socketed in shielding portion 71,72 in the swing arm 61,62 respectively also along with swing arm 61,62 is rotated counterclockwise (shown in arrow among Fig. 6 A), thereby inwardly rotate from both sides, close the center pit 11 on the pedestal 1 gradually.
When start connecting rod 3 turns to certain position, shown in Fig. 7 A and 7B, shielding portion 71 contact fully with 72 medial surface and mutually against, form equilibrium of forces between each parts of interlock and remain on this state.At this moment, shielding portion 71 and 72 is closed the center pit 11 of pedestal 1 fully, and dust cap cuts out.When if the strength that two blades close spring 41,42 is in different size, because of the spring tension difference that is subjected to, two swing arms 61,62 can produce the rotation of different angles, and blade shielding portion 71,72 can at first contact at an end of medial surface because of angle is inconsistent in close gradually process and prop up.At this moment, in order to reach the equilibrium of forces between each parts that causes interlock, two shielding portions 71,72 can be done local rotation (shown in arrow among Fig. 7 A) around shielding portion pillar 612,622 with respect to swing arm 61,62 because of the interaction force of both contact positions, carry out automatic angle modification, thereby realize the medial surface contact fully each other of two shielding portions 71,72, close dust cap, avoid dust to enter.
When two blades were closed fully, blade was opened spring 5 and is stretched because of the rotation of start connecting rod 3 with respect to pedestal 1, shown in Fig. 7 B.When needs are opened dust cap, the external drive source that acts on the Actuator Division 31 of start connecting rod 3 is removed, blade is opened spring 5 and is shunk moving connecting rod 3 backward rotation (turning clockwise shown in arrow among Fig. 7 B) of elastic band action that produce, be that the spring stack on the start connecting rod 3 32,33 is done reverse rotation (being rotated counterclockwise among Fig. 7 A) respectively among Fig. 7 A in slide opening 131,132, thereby compression blade close spring 41,42.The Actuator Division 615,625 that blade closes the elastic force of spring 41,42 and then promotes swing arm 61,62 respectively is around blade pillar 121,122 reverse rotations (turning clockwise among Fig. 7 A), simultaneously, shielding portion 71,72 also turns clockwise with swing arm 61,62 respectively, thereby rotate to both sides from closed condition, open the center pit 11 on the pedestal 1 gradually.When start connecting rod 3 rotated back into initial position, shown in Fig. 6 A and 6B, shielding portion 71,72 was opened the center pit 11 of pedestal 1 fully.At this moment, the outside of shielding portion 71,72 is resisted against respectively on first positive stop lug boss 171 and second positive stop lug boss 172 of pedestal 1 both sides setting.Because first positive stop lug boss 171 has respectively and the consistent inboard profile of blade shielding portion 71,72 lateral profiles with second positive stop lug boss 172, thereby prevent that shielding portion 71,72 from producing unnecessary rotation around shielding portion pillar 612,622.
The lens dustproof cover of the embodiment of the invention adopts the blade that is socketed to form by swing arm and shielding portion two parts, the design shielding portion can be done local rotation with respect to swing arm, thereby two blades close spring force uneven and cause two shielding portions can not complete closed situation under, the face that two shielding portions can be in contact with one another is that angle modification is done in the benchmark rotation, realizes the complete closure of dust cap.
Claims (5)
1. lens dustproof cover, comprise pedestal, the start connecting rod that is installed in a pair of blade in pedestal front and is installed in the pedestal back side, the rotation of described start connecting rod can drive described a pair of blade and make on-off action, it is characterized in that, each blade in the described a pair of blade includes swing arm and shielding portion, described swing arm is socketed on the pedestal on the corresponding blade pillar and is subjected to the driving of start connecting rod and rotates around described blade pillar, described shielding portion is connected on the shielding portion pillar of swing arm outer end correspondence by the shaft hole sleeve that is provided with on it, makes described shielding portion can rotate with respect to described swing arm around described shielding portion pillar when making on-off action with described swing arm rotation.
2. lens dustproof cover according to claim 1, it is characterized in that, described pedestal upper edge circumferentially offers two slide openings respectively, correspondence is provided with two blades and closes spring stack on the described start connecting rod, and described blade closes spring stack and passes corresponding slide opening and rotate with respect to described pedestal for described start connecting rod.
3. lens dustproof cover according to claim 1, it is characterized in that, be symmetrically arranged with two positive stop lug boss that prop up blade after blade is opened on the outer rim in described pedestal front, each positive stop lug boss has the inboard profile consistent with the shielding portion lateral profile of blade.
4. lens dustproof cover according to claim 1, it is characterized in that, described swing arm comprises the Actuator Division and from the terminal extended arm of Actuator Division, the joint of described Actuator Division and arm is provided with axis hole being socketed on the pedestal on the corresponding blade pillar, and described Actuator Division is closed spring by blade and is connected with the start connecting rod.
5. lens dustproof cover according to claim 4 is characterized in that, arm the inner of described swing arm is provided with two limited posts, and described shielding portion is extended with limiting section at the end near swing arm, and described limiting section places between described two limited posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101089981A CN101598885B (en) | 2008-06-05 | 2008-06-05 | Lens dustproof cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101089981A CN101598885B (en) | 2008-06-05 | 2008-06-05 | Lens dustproof cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101598885A CN101598885A (en) | 2009-12-09 |
| CN101598885B true CN101598885B (en) | 2011-09-14 |
Family
ID=41420372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101089981A Expired - Fee Related CN101598885B (en) | 2008-06-05 | 2008-06-05 | Lens dustproof cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101598885B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102967982A (en) * | 2012-11-08 | 2013-03-13 | 中山联合光电科技有限公司 | Blade opening and closing device |
| CN103913930A (en) * | 2013-01-08 | 2014-07-09 | 华晶科技股份有限公司 | Shielding structure |
| CN103234545B (en) * | 2013-03-29 | 2015-09-23 | 北京控制工程研究所 | A kind of dust-proof mechanism of space optics sensor |
| CN104267783A (en) * | 2014-09-21 | 2015-01-07 | 鲁辰超 | Shielding device for camera of notebook computer |
| CN111642802A (en) * | 2020-06-29 | 2020-09-11 | 深圳市吉迩科技有限公司 | Dust cap mechanism, atomizing device and aerosol generating device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648708A (en) * | 2004-01-27 | 2005-08-03 | 奥林巴斯株式会社 | Lens barrel and camera |
-
2008
- 2008-06-05 CN CN2008101089981A patent/CN101598885B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648708A (en) * | 2004-01-27 | 2005-08-03 | 奥林巴斯株式会社 | Lens barrel and camera |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101598885A (en) | 2009-12-09 |
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