CN1661409A - Lens barrel - Google Patents
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- CN1661409A CN1661409A CN 200510008731 CN200510008731A CN1661409A CN 1661409 A CN1661409 A CN 1661409A CN 200510008731 CN200510008731 CN 200510008731 CN 200510008731 A CN200510008731 A CN 200510008731A CN 1661409 A CN1661409 A CN 1661409A
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Abstract
The invention provides a lens barrel capable of preventing a cam follower from falling off from a cam groove in the case of dropping the lens barrel. In the lens barrel, a 3rd group frame holding a 3rd group lens and freely advancing and retreating is arranged at the inner periphery part of a 2nd fixed frame. The frame is supported to freely advance and retreat by two guide shafts and has the single cam follower at its outer circumference part. If the lens barrel is dropped in an optical axis direction, impact force acts between the cam groove and the cam follower to bend the guide shaft, whereby the cam follower is to come off from the cam groove. However, the lens barrel is provided with a projecting part having a gap between the inner peripheral surface of the frame and the projecting part at a position on an opposite side to the cam follower on the frame, and the projecting part abuts on the inner peripheral surface even when the guide shaft is to be bent, so that the cam follower is prevented from coming off from the cam groove.
Description
Technical field
The present invention relates to a kind of lens barrel with shock-resistant structure.
Background technology
As lens barrel in the past, have a kind of by making cam path and cam follower chimeric, to the advance and retreat lens barrel of the type that drives of members of frame.When such lens barrel dropped because of carelessness, cam follower may come off out from cam path because of the elastic deformation of each several part.
Disclose a kind of lens barrel in Japan's patent disclosure communique 2003-344745 number, it comprises rotatable circular cam frame, and this cam frame has along the cam path in interior one week of perimembranous; And lens holding frames, when being driven, can retire movingly in that optical axis direction is enterprising, it is embedded in week in this cam frame, has to be fastened in the above-mentioned cam path and the cam follower that can be free to slide.In this lens barrel, on the zone that does not dispose cam follower on the said lens maintenance frame, dispose the butt pin that abuts to week in the above-mentioned cam frame.If when the said lens lens barrel drops, even above-mentioned each members of frame produces distortion and makes above-mentioned cam follower to come off out from above-mentioned cam path, but, therefore can prevent that still above-mentioned cam follower from coming off because above-mentioned butt pin is connected to week in the above-mentioned cam frame.
Summary of the invention
The purpose of this invention is to provide a kind ofly when lens barrel drops, can prevent that cam follower from coming off from cam path, and can not increase lens advance and retreat load powered resistance and simply constructed lens barrel.
Lens barrel of the present invention has camera axis, it is characterized in that, comprising: bar-shaped leading axle; By the mobile members of frame that above-mentioned bar-shaped leading axle guided; Be arranged on the cam follower on the above-mentioned mobile members of frame; The cam frame that has the cam path that fastens with above-mentioned cam follower for above-mentioned mobile members of frame is moved; And protuberance, it is arranged on the above-mentioned mobile members of frame, be positioned at the opposite side of above-mentioned cam follower, itself and above-mentioned cam follower are clipped in the middle above-mentioned camera axis, in the normal state, do not abut on other members of frame different with above-mentioned mobile members of frame, but when the said lens lens barrel is subjected to impact force action, to abut on other members of frame, thereby can prevent above-mentioned cam follower coming off from cam path.
Other features and advantages of the present invention can be understood from following explanation.
Description of drawings
Fig. 1 is the stereographic map of the lens barrel outward appearance of expression an embodiment of the present invention.
Fig. 2 be lens barrel among Fig. 1 under the camera lens contraction state, the sectional view of cutting open along optical axis.
Fig. 3 be lens barrel among Fig. 1 under the wide-angle state, the sectional view of cutting open along optical axis.
Fig. 4 be lens barrel among Fig. 1 under long burnt state, the sectional view of cutting open along optical axis.
Fig. 5 is a stereographic map of observing the second group of frame that is arranged in Fig. 1 lens barrel, fast doorframe, the 3rd group of frame, the 4th group of frame and back fixed frame etc. from the place ahead downside.
Fig. 6 is a stereographic map of observing the second group of frame that is arranged in Fig. 1 lens barrel, fast doorframe, the 3rd group of frame, the 4th group of frame, the 5th group of frame and back fixed frame from the place ahead upside.
Fig. 7 observes the stereographic map that is arranged at the fast doorframe in Fig. 1 lens barrel, the 3rd group of frame and the 4th group of frame from the rear upside.
Fig. 8 is the view of the A direction of Fig. 2, is from the 3rd group of frame of forward observation said lens lens barrel figure on every side.
Fig. 9 is the view of the B direction of Fig. 2, is from the 4th group of lens frame of forward observation said lens lens barrel figure on every side.
Figure 10 represents along second group of frame of lens barrel in the optical axis direction enlarged drawing 1 and aperture plate and fast doorframe amplification profile on every side.
Figure 11 is the view of the C direction of Figure 10, and expression sticks on second group of state on the lens frame with aperture plate.
Figure 12 is the figure of the aperture plate shown in the C direction among expression Figure 10.
Figure 13 is the figure of the above-mentioned second group of lens frame of expression, and above-mentioned second group of lens frame is in the state before the aperture plate shown in the C direction among Figure 10 of pasting.
Figure 14 is that the aperture plate joining jig is used in expression, Figure 12 aperture plate is located and is pasted on the stereographic map of the state on second group of frame of Figure 13.
Embodiment
Below, the accompanying drawings embodiments of the present invention.
Fig. 1 is the stereographic map of the lens barrel outward appearance of expression an embodiment of the present invention.Fig. 2, Fig. 3 and Fig. 4 are respectively the sectional views of cutting open along said lens lens barrel optical axis, and Fig. 2 represents the camera lens contraction state, and Fig. 3 represents the wide-angle state, and Fig. 4 represents long burnt state.Fig. 5 is a stereographic map of observing the second group of frame that is built in the said lens lens barrel, fast doorframe, the 3rd group of frame, the 4th group of frame and back fixed frame etc. from the place ahead downside.Fig. 6 is a stereographic map of observing the second group of frame that is built in the said lens lens barrel, fast doorframe, the 3rd group of frame, the 4th group of frame, the 5th group of frame and back fixed frame from the place ahead upside.Fig. 7 observes the stereographic map that is built in the fast doorframe in the said lens lens barrel, the 3rd group of frame and the 4th group of frame from the rear upside.Fig. 8 is the A direction view of Fig. 2, is from the 3rd group of frame of forward observation said lens lens barrel figure on every side.Fig. 9 is the B direction view of Fig. 2, is from the 4th group of lens frame of forward observation said lens lens barrel figure on every side.Figure 10 represents to amplify second group of frame of said lens lens barrel and aperture plate and fast doorframe amplification profile on every side along optical axis direction.Figure 11 is the C direction view of Figure 10, and expression pastes second group of state on the lens frame with aperture plate.Figure 12 is the C direction view of Figure 10 of above-mentioned aperture plate.Figure 13 is a C direction view of pasting Figure 10 of aperture plate second group of lens frame before.Figure 14 is that the aperture plate joining jig is used in expression, aperture plate is located and is pasted on the stereographic map of second group of state on the frame.
In addition, in the following description, the optical axis of photographic lens (camera axis) is with optical axis zero expression.Will be along the object side of optical axis zero as the place ahead (+Z direction), with the imaging side as rear (Z direction).Left and right directions is observed direction from the place ahead.
Specifically, lens barrel 1 comprises shown in Fig. 2～4: be combined into first fixed frame 2 of one, as second fixed frame 3, front shoe 5 and the rear fixed plate 16 of other members of frame; Be driven during as zoom advance and retreat a plurality of members of frame first group of lens 41 of maintenance first group of frame 6, keep second group of lens 42 and be fixed with aperture plate second group of frame 10, keep the conduct of the 3rd group of lens 43 and fast doorframe 13 to move the 3rd group of frame 12 of members of frame, keep the conduct of the 4th group of lens 44 to move the 4th group of frame 14 of members of frame, when focusing on, can be driven advance and retreat and keep the 5th group of frame 15 of the 5th group of lens 45; Be fixed on optical filter 46, CCD47 and CCD back up pad 48 on the rear fixed plate 16 as the maintenance of image unit; And above-mentioned zoom motor 71 and gear case 72.
First fixed frame 2 is circular members of frame, is provided with 3 in inner peripheral surface upper edge optical axis zero direction and directly advances ditch 2a.In addition, second fixed frame 3 is supported by screw retention in its back-end, makes the fixed frame 2 interior perimembranous of winning have the regulation space.And then front shoe 5 is fixedly supported to by screw 62 on the front end face of second fixed frame 3, and rear fixed plate 16 is fixed on the rear end face of second fixed frame 3.In the outside of first fixed frame 2, the gear case 72 that disposes zoom motor 71 and be built-in with gear set, this gear set make zoom motor 71 be connected with cam frame 4 formation power.
Two bar-shaped leading axles 21,22 embed among the axle supported hole 5a of portion, the 5b and 16a, 16b of front shoe 5, rear fixed plate 16, and the state of fixed support for paralleling with optical axis zero.
The output gear end of said gear group is snapped at the gear part 4a of cam frame 4.Therefore, when cam frame 4 stretches out camera lens from the camera lens contraction state, perhaps when shrinking camera lens or driving zoom, use zoom motor 71, by said gear group driven in rotation.
First group of frame 6 is circular members of frame, and its embedding is supported between the periphery of interior week of first fixed frame 2 and cam frame 4, can rotate freely, advance and retreat.On the front end face of this first group of frame 6, be installed with first group of lens holding frames 7 by screw 61, this first group of lens holding frames 7 is used for fixing first group of lens 41.And then in the front side of first group of lens holding frames 7, be equipped with can turn filter ring 8.
Three are directly advanced quadrate part after the periphery that directing pin 32 is fixed on first group of frame 6, in three cam followers 31 with circular conical surface are fixed on week the back quadrate part.Directly advance directing pin 32 and be embedded in directly advancing among the ditch 2a of first fixed frame 2 sliding freely, cam follower 31 is embedded among the cam path 4b of cam frame 4 sliding freely.Therefore, when when the camera lens contraction state drives down, and if then driving cam frame 4 rotations when zoom, then first group of frame 6 kept straight on optical axis zero direction, and moves (Fig. 2～4) along the cam path 4b advance and retreat of cam frame 4.
Second group of frame 10 is members of frame that its rear portion has flange part 10a, is assembled in the inside of second fixed frame 3.In the central opening portion of second group of frame 10, be fixed with second group of lens 42.On the front peripheral part of second group of lens 42, be installed with lens trim ring 11.In optical axis zero both sides and two roughly relative places of direction, be provided with collar aperture 10b and U font groove 10c in flange part 10a rear periphery.
Be positioned at second group of frame 10 flange part 10a rear end face 10d and with fast doorframe 13 relative part on optical axis zero direction, shown in Figure 10,11, the tabular diaphragm that is used to cut off unnecessary light is an aperture plate 51, and its location also is fixedly mounted on the direction vertical with optical axis zero.Use aperture plate joining jig 81 (Figure 14) as described later to implement this fixed installation operation.
On aperture plate 51, be provided with the 51a of central opening portion as the diaphragm opening, and on peripheral part, be provided with breach 51b, the 51c of the protuberance turnover that is used to make second group of frame, and then, be provided with two pilot hole 51d, 51e (Figure 12, Figure 14) in the outside of the 51a of central opening portion.On the other hand, on aperture plate joining jig 81, be provided with the frame locating shaft 82,83 as axial region in the position that is equivalent to leading axle 21,22, above-mentioned leading axle 21,22 is a benchmark with optical axis corresponding point P0; And, being fixed with aperture plate register pin 84,85 (Figure 14), it is to be used for the 51a of central opening portion of aperture plate 51 is centrally located in the axial region at optical axis corresponding point P0 place.
In second group of frame 10, be installed with metal cam follower 33A, 33B, itself and sleeve pipe 25 and U font groove 10c are adjacent and have a circular conical surface.Cam follower 33A, 33B connect the slotting thorough cut 3b of second fixed frame 3, embed sliding freely in two of cam frame 4 among all cam path 4c.When camera lens shrink to drive or during zoom, when 4 rotations of driving cam frame, second group of frame 10 be by leading axle 21,22 guiding, enterprisingly along the track of cam path 4c in optical axis zero direction retires moving (Fig. 2～4).
The 3rd group of frame 12 is the members of frame with flange part, is assembled in the inside of second fixed frame 3.On the front face of the 3rd group of frame 12, be installed with fast doorframe 13, in central opening portion, be fixed with the 3rd group of lens 43.
On the flange part of the 3rd group of frame 12, as shown in Figure 8, in optical axis zero both sides and the roughly relative position, two place, the left and right back side of direction, be provided with leading axle supported hole 12a, 12b, and then near leading axle supported hole 12a, 12b, in optical axis zero both sides and roughly relative lower-left, the position, upper right two place of direction, be provided with collar aperture 12c and U font groove 12d.
Engage respectively on leading axle supported hole 12a, 12b and be fixed with leading axle 23,24, it is in and optical axis zero state parallel and that rearward extend.This leading axle 23,24 is to lay respectively near the allocation position of leading axle 21,22 in the position on the optical axis vertical plane.
With the state that has the space sleeve pipe 26 being inserted among the collar aperture 12c, is that benchmark engages fixed sleeving 26 under the state of having located with leading axle 21.This locating engagement method is identical with the method for locating engagement sleeve pipe 25.Leading axle 21 embeds in the sleeve pipe 26 sliding freely, and leading axle 22 embeds among the U font groove 12d sliding freely.
Be installed with single metallic cam follower 34 in the 3rd group of frame 12, it is adjacent with the leading axle 21 that embeds sleeve pipe 26 and have a circular conical surface.Cam follower 34 connects the slotting thorough cut 3b of second fixed frame 3, embeds sliding freely among interior all cam path 4d of cam frame 4.When camera lens shrink to drive or during zoom, when 4 rotations of driving cam frame, the 3rd group of frame 12 by leading axle 21,22 guiding and along the track of cam path 4d in optical axis zero direction enterprising retire moving.(Fig. 2～4)
Near the U font groove 12d of the flange part peripheral part of the 3rd group of frame 12, in optical axis zero both sides and with the cam follower 34 relative position of direction roughly, be provided with slightly outwards outstanding protuberance 12e (Fig. 6, Fig. 8).This protuberance 12e is under the common user mode (advance and retreat driving condition) of lens barrel 1, can not abut on the inner peripheral surface 3a of second fixed frame 3, moves but keep predetermined gap S1 advance and retreat.
If lens barrel 1 is subjected to external force effects such as impulsive force, when the lens barrel each several part produced distortion, protuberance 12e will abut on the inner peripheral surface 3a of second fixed frame 3.Thereby can prevent that by this butt operation cam follower 34 from coming off from cam path 4d.Describe the concrete action that stops this cam follower to come off after a while in detail.
But fast doorframe 13 is built-in with the blade 52 of switch central opening portion and the blade of diaphragm (not shown) of adjustable diaphragm, and is built-in with the solenoid (not shown) that is used to drive blade, blade of diaphragm etc.This fast doorframe 13 is fixedly supported to the front of the 3rd group of frame 12, moves with the 3rd group of frame 12 common advance and retreat.
The 4th group of frame 14 is assembled in the inside of second fixed frame 3, maintains the 4th group of lens 44 in central opening portion.The 4th group of frame 14 is provided with collar aperture 14a and U font groove 14b (Fig. 9) on the left and right side position of optical axis zero both sides.
In collar aperture 14a, insert sleeve pipe 27 with the state that has the space, be that benchmark engages fixed sleeving 27 down in the state of having located with leading axle 23.This locating engagement method is identical with the method for locating engagement sleeve pipe 25.And, be fixedly installed in the 3rd group of leading axle 23 on the frame 12 and embed sliding freely in the sleeve pipe 27, be fixedly installed in the 3rd group of leading axle 24 on the frame 12 and embed sliding freely among the U font groove 14b.
Be installed with single metallic cam follower 35 in the 4th group of frame 14, it is adjacent with the leading axle 23 that embeds sleeve pipe 27 and have circular conical surface (result is that cam follower 35 is also adjacent with leading axle 21.Fig. 9).Cam follower 35 connects the slotting thorough cut 3b of second fixed frame 3, embeds sliding freely among interior all cam path 4e of cam frame 4.When camera lens shrink to drive or during zoom drive, when 4 rotations of driving cam frame, the 4th group of frame 14 is by leading axle 23,24 guiding of the 3rd group of frame 12 sides and enterprisingly along the track of cam path 4e in optical axis zero direction retire movingly, and above-mentioned the 3rd group of frame 12 is by leading axle 21,22 guiding (Fig. 2～4).In addition, at the rear of leading axle 23, be inserted with compression spring 30, it is the application of force on the 4th group of frame 14 and the 3rd group of frame 12 direction near each other, and the end of above-mentioned compression spring 30 is fixed by locating ring.Therefore, between the cam follower 34 of the cam follower 35 of following the 4th group of frame 14 and the 3rd group of frame 12, chimeric space on cam path 4d, the 4e of cam frame 4 is eliminated, and the 3rd group of frame 12 and the 4th group of frame 14 move with the state advance and retreat that do not have the space on optical axis zero direction usually.
Near the U font groove 12b of the flange part peripheral part of the 4th group of frame 14, roughly on the relative position of direction, be provided with slightly to the outstanding protuberance 14e (Fig. 6, Fig. 8) in the lens barrel diametric(al) outside at optical axis zero both sides and cam follower 35.And then be provided with thickening part 14d in the bottom of U font groove 14b.On the other hand, near the sleeve pipe 27 of the flange part peripheral part of the 4th group of frame 14, cam follower 35, be provided with to the outstanding protuberance 14c in the lens barrel diametric(al) outside.Lens barrel 1 is under the common user mode (advance and retreat driving condition), and protuberance 14e, 14c can not abut on the inner peripheral surface 3a of second fixed frame 3, moves but keep predetermined gap S2, S4 advance and retreat respectively.Thickening part 14d can not abut on the leading axle 24, but keeps predetermined gap S3.In addition, the position of protuberance 14c on optical axis zero direction is at the rear of cam follower 35, and the distance that departs from regulation is disposed, and (in addition, protuberance 14c also can be positioned at the place ahead, the distance that departs from regulation, and also on optical axis direction, have the protuberance of the thickness of regulation).
Be subjected to external force effects such as impulsive force when lens barrel 1, when the lens barrel each several part produces distortion, protuberance 14e, 14c abut on the inner peripheral surface 3a of second fixed frame 3, and thickening part 14d abuts on the leading axle 24, thereby can prevent that cam follower 35 from coming off from cam path 4e.Describe the concrete action that stops this cam follower to come off after a while in detail.
The 5th group of frame 15 is assembled in the inside of second fixed frame 3, is fixed with the 5th group of lens 45 in central opening portion.The 5th group of frame 15 is provided with U font groove 15a and collar aperture 15b (Fig. 9) in lower-left, the position, upper right side of optical axis zero both sides.
Thereby the 5th group of frame 15 drives by not shown focusing driving mechanism portion and focuses on, and by leading axle 21,22 guiding, optical axis zero direction enterprising retire moving.
In the lens barrel 1 of present embodiment with above-mentioned structure, when being in camera lens contraction state shown in Figure 2, if drive zoom motor 71, driving cam frame 4 stretches out on the direction at camera lens and rotates, then above-mentioned each cam path will make above-mentioned each cam follower move along optical axis zero direction, first group of frame 6, second group of frame 10, the 3rd group of frame 12 and the 4th group of frame 14 arrive wide-angle position respectively, become the state (Fig. 3) that can carry out wide angle shot.Therefore, thus driving the 5th group of frame 15 advance and retreat by above-mentioned focusing driving mechanism portion moves and focuses on the photography of just practicable wide-angle state.And then when driving zoom motor 71 in the same direction, above-mentioned each frame arrives long-focus position, just can carry out the photography (Fig. 4) under the long-focus state.Drive zoom motor 71 counter-rotatings, and driving cam frame 4 is when rotating on the camera lens shrinkage direction, the camera lens punctured position that above-mentioned each frame is just withdrawn shown in Figure 2.
When owing to reason such as dropping, when making lens barrel 1 be subjected to impact force action, for example, when being subjected to the impact of optical axis zero direction, this impact force action is between each cam follower 31～35 and cam path 4b～4d.Because the profile of above-mentioned cam follower is respectively the shape that is formed with circular conical surface, therefore above-mentioned impulsive force becomes the strength that cam follower is released to its direction of principal axis for cam path, in other words, becomes the strength of releasing to optical axis zero direction.For first group of frame 6 and second group of frame 10, because cam follower is disposed at three directions on the side face, or be disposed on the position of the relative both direction of direction, therefore the position of first group of frame 6 or second group of frame 10 not too can change on the direction of one-sided because of above-mentioned impulsive force.Therefore, the possibility that comes off from cam path of the cam follower of first group of frame 6 and second group of frame 10 is less.
On the other hand, the 3rd, the 4th group of frame 12,14 disposes a cam follower 34,35 respectively.The 3rd group of frame 12 is subjected to the circular conical surface extruding of above-mentioned cam follower because of above-mentioned impulsive force, thereby extruding will be gone up the leading axle 21 that changes the position in optical axis zero direction (optical axis vertical direction).Leading axle 21 is because span is longer, therefore will be to the bending of above-mentioned optical axis vertical direction, the partial offset that it is crooked at the protuberance 12e of cam follower 34 phase negative sides' the 3rd group of frame 12 and the gap S1 (Fig. 8) between second fixed frame, the 3 inner peripheral surface 3a, thereby this protuberance of butt 12e.Operate the bending that can suppress leading axle 21 by this butt, consequently, can stop positively that cam follower 34 comes off from cam path 4d.
In addition, the 4th group of frame 14 also is subjected to the circular conical surface extruding of above-mentioned cam follower owing to above-mentioned impulsive force, thereby extruding will be gone up the leading axle 23 that changes the position in optical axis zero direction (optical axis vertical direction).And leading axle 21 also is subjected to 12 extruding of the 3rd group of frame, and both sides' leading axle all will produce flexural deformation.Yet, the partial offset that it is crooked gap S2 (Fig. 9) between the inner peripheral surface 3a of the protuberance 14e of cam follower 35 phase negative sides' the 4th group of frame 14 and second fixed frame 3, thereby this protuberance of butt 14e.Meanwhile, also offset the thickening part 14d of the 4th group of frame 14 and the gap S3 of leading axle 24, thus thickening part 14d butt leading axle 24.And, the 4th group of frame 14 is because the bending of leading axle 23, thereby will tilt to produce change in location to optical axis zero, but because offset and cam follower 35 the same side and departing from the protuberance 14c of the 4th group of frame 14 of optical axis zero direction position and the inner peripheral surface 3a of second fixed frame 3 between gap S4 (Fig. 9), thereby butt protuberance 14c, therefore the inclination of the 4th group of frame 14 is also controlled.As mentioned above, by the butt thickening part, but the inclination of crooked or the 4th group of frame 14 of restricting guide axle 21,23 can more positively stop cam follower 35 to come off from cam path 4e.
And, each protuberance of the 3rd group of frame 13 of lens barrel 1, the 4th group of frame 14 or thickening part are not having under the common state of impact force action, can keep and the inner peripheral surface 3a of second fixed frame 3 or the state of leading axle 24 maintenance predetermined gap S1～S4, therefore can not increase the load of zoom motor 71.
In addition, the above-mentioned action direction that acts on the impulsive force of lens barrel is the direction of hypothesis along optical axis zero.But be not limited to this, for example when direction perpendicular to the impulsive force of optical axis zero (from the come off impulsive force of direction side of cam follower) when having an effect, and each picture frame parts is when producing distortion, thereby also can be by preventing that with above-mentioned same action cam follower from coming off.
As mentioned above, use the lens barrel of present embodiment, when lens barrel drops, can prevent that cam follower from coming off from cam path, and can not increase the load resistance that drives the lens advance and retreat, and the structure of this lens barrel is also very simple.In addition, the picture frame of the lens barrel of present embodiment structure, its lens barrel that can be used as silver salt film camera certainly uses.
According to the present invention, a kind of lens barrel can be provided, it can prevent to come off from cam path because of reasons such as lens barrel drops cause cam follower, and can not increase load resistance and the simple structure that drives the lens advance and retreat.
The present invention is not limited only to above-mentioned embodiment, in the scope that does not break away from its major technique thought, the implementation phase practicable various other distortion.And then, in the above-described embodiment, comprise the invention in each stage, can be by disclosed a plurality of constitutive requirements be made appropriate combination, thus various inventions can be proposed.
As long as can solve problem to be solved by this invention, and can obtain effect of the present invention, for example, even in disclosed whole constitutive requirements from embodiment, delete several constitutive requirements, this structure of deleting these constitutive requirements still can be used as the present invention and proposes.
Claims (4)
1. a lens barrel has camera axis, it is characterized in that, comprising:
Bar-shaped leading axle;
By the mobile members of frame that above-mentioned bar-shaped leading axle guided;
Be arranged on the cam follower on the above-mentioned mobile members of frame;
The cam frame that has the cam path that fastens with above-mentioned cam follower for above-mentioned mobile members of frame is moved; And
Protuberance, it is arranged on the above-mentioned mobile members of frame, be positioned at the opposite side of above-mentioned cam follower, itself and above-mentioned cam follower are clipped in the middle above-mentioned camera axis, in the normal state, do not abut on other members of frame different, but when the said lens lens barrel is subjected to impact force action, will abut on other members of frame with above-mentioned mobile members of frame.
2. lens barrel according to claim 1, wherein above-mentioned mobile members of frame is guided by a pair of above-mentioned bar-shaped leading axle, above-mentioned cam follower is configured in a side of above-mentioned a pair of bar-shaped leading axle, and raised part is configured in the opposite side of above-mentioned a pair of bar-shaped leading axle.
3. lens barrel according to claim 1, wherein above-mentioned other members of frame are the fixed frames that is fixed and supports.
4. lens barrel according to claim 2, wherein above-mentioned other members of frame are the fixed frames that is fixed and supports.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004049966A JP2005241842A (en) | 2004-02-25 | 2004-02-25 | Lens barrel |
| JP2004049966 | 2004-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1661409A true CN1661409A (en) | 2005-08-31 |
| CN100492084C CN100492084C (en) | 2009-05-27 |
Family
ID=35010827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100087311A Expired - Fee Related CN100492084C (en) | 2004-02-25 | 2005-02-24 | Lens barrel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005241842A (en) |
| CN (1) | CN100492084C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900865A (en) * | 2009-05-27 | 2010-12-01 | 奥林巴斯映像株式会社 | Lens barrel |
| CN104136954A (en) * | 2012-02-28 | 2014-11-05 | 株式会社尼康 | Lens tube and image capture device |
| CN106462035A (en) * | 2014-06-09 | 2017-02-22 | 兴和株式会社 | Lens barrel |
| CN109765766A (en) * | 2017-11-10 | 2019-05-17 | 夏普株式会社 | Photoconductor drum, drive shaft, photoconductor drum system, image forming apparatus and compounding machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5093036B2 (en) * | 2008-10-02 | 2012-12-05 | 株式会社ニコン | Lens barrel and imaging device |
| CN102132187B (en) | 2008-08-21 | 2014-06-18 | 株式会社尼康 | Lens barrel and imaging device |
| WO2010021150A1 (en) * | 2008-08-21 | 2010-02-25 | 株式会社ニコン | Lens barrel and imaging device |
| JP5832264B2 (en) * | 2011-12-08 | 2015-12-16 | キヤノン株式会社 | interchangeable lens |
| JP6033039B2 (en) * | 2012-10-29 | 2016-11-30 | 日東光学株式会社 | Lens barrel |
| JP6448230B2 (en) * | 2014-06-25 | 2019-01-09 | キヤノン株式会社 | Optical equipment |
-
2004
- 2004-02-25 JP JP2004049966A patent/JP2005241842A/en not_active Withdrawn
-
2005
- 2005-02-24 CN CNB2005100087311A patent/CN100492084C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900865A (en) * | 2009-05-27 | 2010-12-01 | 奥林巴斯映像株式会社 | Lens barrel |
| CN101900865B (en) * | 2009-05-27 | 2012-07-18 | 奥林巴斯映像株式会社 | Lens barrel |
| CN104136954A (en) * | 2012-02-28 | 2014-11-05 | 株式会社尼康 | Lens tube and image capture device |
| US9766425B2 (en) | 2012-02-28 | 2017-09-19 | Nikon Corporation | Lens barrel, image capturing device and method of manufacturing the same |
| CN104136954B (en) * | 2012-02-28 | 2018-11-30 | 株式会社尼康 | Lens barrel and photographic device |
| CN106462035A (en) * | 2014-06-09 | 2017-02-22 | 兴和株式会社 | Lens barrel |
| CN109765766A (en) * | 2017-11-10 | 2019-05-17 | 夏普株式会社 | Photoconductor drum, drive shaft, photoconductor drum system, image forming apparatus and compounding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005241842A (en) | 2005-09-08 |
| CN100492084C (en) | 2009-05-27 |
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