CN113467041A - Self-locking device and optical zoom lens - Google Patents
Self-locking device and optical zoom lens Download PDFInfo
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- CN113467041A CN113467041A CN202110793931.1A CN202110793931A CN113467041A CN 113467041 A CN113467041 A CN 113467041A CN 202110793931 A CN202110793931 A CN 202110793931A CN 113467041 A CN113467041 A CN 113467041A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
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Abstract
The invention discloses a self-locking device and an optical zoom lens, the self-locking device is used for the optical zoom lens, the optical zoom lens comprises a moving group, a fixed group and a driving motor, the driving motor is used for driving the moving group to be movably arranged along a first direction relative to the fixed group, the self-locking device comprises a driving part, a first limit part and a second limit part, the first limit part and the second limit part are respectively arranged on the moving group and the fixed group, the second limit part comprises a locking piece moving relative to the first limit part, the locking piece has a locking state limiting mutually with the first limit part and an unlocking state releasing the limit with the first limit part, the driving part is in driving connection with the locking piece, the locking piece is driven to move by the driving part, when the driving motor is powered off, the driving locking piece can be synchronously switched from the unlocking state to the locking state, so as to solve the situation that when the driving motor is powered off and can not be self-locked, the moving group in the lens barrel can freely slide in the range of front and back mechanical dead points, and the lens is easily damaged by hard impact on the front and back dead points.
Description
Technical Field
The invention relates to the field of imaging equipment, in particular to a self-locking device and an optical zoom lens.
Background
In the optical zoom lens based on the VCM motor, the moving group is in a lens barrel, two parallel guide shafts are fixed in the lens barrel, the moving group slides on the two guide shafts, and the moving range is limited by a front and back mechanical dead point in the lens barrel. The power source for moving the moving group is a VCM motor, the mover and the stator of the VCM motor are in non-contact, the VCM motor can not self-lock when the coil is not electrified, and at the moment, the moving group driven by the VCM motor in the lens is in a completely free state between the front mechanical dead point and the rear mechanical dead point along the guide shaft and can slide freely. In the process of transportation or movement, inevitably, a moving group in the lens barrel can freely slide in the range of front and rear mechanical dead points, so that the front and rear dead points are impacted hard, the lens can be crushed, the black mechanism is broken and other lens damage adverse effects can be caused, and the imaging and the service performance of the lens are seriously influenced.
Disclosure of Invention
The invention mainly aims to provide a self-locking device and an optical zoom lens, and aims to solve the problem that when a driving motor is powered off and cannot be locked automatically, a moving group in a lens barrel can slide freely in the range of front and rear mechanical dead points, and the lens is easy to damage due to hard impact on the front and rear dead points.
In order to achieve the above object, a self-locking device provided by the present invention is used for an optical zoom lens, the optical zoom lens includes a moving group, a fixed group and a driving motor, the driving motor is used for driving the moving group to be movably disposed along a first direction relative to the fixed group, wherein the self-locking device includes:
a first stopper portion for being mounted on one of the moving group and the fixed group;
the second limiting part is used for being installed on the other one of the moving group and the fixed group and comprises a locking piece movably arranged relative to the first limiting part, and the locking piece has a locking state of limiting the first limiting part and an unlocking state of releasing limiting with the first limiting part; and the number of the first and second groups,
and the driving part is in driving connection with the locking piece and is used for driving the locking piece to be switched to the locking state from the unlocking state when the driving motor is powered off.
Optionally, the driving portion includes a lock motor configured to maintain the lock member in the unlocked state, and a reset member configured to provide a reset force to the lock member so that the lock member is switched from the unlocked state to the locked state.
Optionally, the second limiting part further comprises an installation frame used for being fixed on the other one of the movable group and the fixed group, the locking piece is movably arranged on the installation frame, the reset piece comprises a torsion spring, one end of the torsion spring is connected to the installation frame, and the other end of the torsion spring is connected to the locking piece.
Optionally, the first limiting part is provided with a limiting groove, the locking piece is at least partially located in the limiting groove and is rotatably arranged relative to the limiting groove, the locking piece is in the locking state and is abutted against the inner wall of the limiting groove, and the locking piece is arranged at an interval in the limiting groove in the unlocking state.
Optionally, the limiting groove extends along the first direction, and a notch of the limiting groove faces the locking piece;
the locking piece is followed the microscler that first direction extends, and winds the pivot that first direction extends rotationally sets up, the cross sectional shape of locking piece is the polygon under the locking state, at least one in a plurality of summits of polygon the summit with the inner wall mutual butt of spacing groove.
Optionally, the first limiting portion includes a connecting plate and two side plates, and the two side plates are respectively connected with the connecting plate and are arranged at intervals so as to form the limiting groove by enclosing with the connecting plate;
the polygon is a square, and under the locking state, three vertexes of four vertexes of the square are respectively abutted against the connecting plate and the two side plates in a one-to-one correspondence manner.
Optionally, the first limiting portion includes a connecting plate and two side plates, and the two side plates are connected with the connecting plate respectively and arranged at intervals to form the limiting groove by enclosing with the connecting plate;
the polygon is a rectangle, and in the locked state, two nonadjacent vertexes of the four vertexes of the rectangle are respectively abutted against the two side plates in a one-to-one correspondence manner.
Optionally, the first limiting part comprises a first side plate and a second side plate, and the first side plate and the second side plate are arranged at an included angle to form the limiting groove in a surrounding manner;
the cross section of the locking piece is triangular, and in the locking state, two vertexes of three vertexes of the triangle are respectively abutted to the first side plate and the second side plate in a one-to-one correspondence mode.
Optionally, the driving part comprises a locking motor and a resetting piece, the locking motor is used for maintaining the locking piece in the unlocking state, and the resetting piece is used for providing resetting force for the locking piece so as to enable the locking piece to be switched from the unlocking state to the locking state;
the locking piece includes the edge the axle core that the first direction extends with locate the wearing layer of axle core periphery, locking motor reaches reset the piece with the axle core drive is connected, is used for the drive the locking piece winds the axle core rotates, the material of wearing layer is the elasticity material.
The present invention also provides an optical zoom lens, including:
a fixed group;
a movable group movably arranged along a first direction relative to the fixed group;
the driving motor is in driving connection with the moving group and used for driving the moving group to move along the first direction; and the number of the first and second groups,
the above self-locking device, the self-locking device includes:
a first stopper portion for being mounted on one of the moving group and the fixed group;
the second limiting part is used for being installed on the other one of the moving group and the fixed group and comprises a locking piece movably arranged relative to the first limiting part, and the locking piece has a locking state of limiting the first limiting part and an unlocking state of releasing limiting with the first limiting part; and the number of the first and second groups,
and the driving part is in driving connection with the locking piece and is used for driving the locking piece to be switched to the locking state from the unlocking state when the driving motor is powered off.
In the optical zoom lens according to the present invention, since the lens barrel includes a movable group as a component for focusing, and a power device for driving the movable group is a driving motor, a fixed group is further provided in the lens barrel with respect to the movable group, the driving motor drives the movable group to move in a first direction with respect to the fixed group, and the movable group can move within a range defined by front and rear mechanical dead points, the self-locking device includes a first limiting portion, a second limiting portion, and a driving portion, the first limiting portion is configured to be mounted on one of the movable group and the fixed group, the second limiting portion is configured to be mounted on the other of the movable group and the fixed group, the second limiting portion further includes a locking member movably provided with respect to the first limiting portion, and the locking member has a locking state in which the locking member and the first limiting portion are mutually limited, And the driving part is in driving connection with the locking piece, and the driving part is arranged to drive the locking piece to move, so that the locking piece can be driven to be synchronously switched from the unlocking state to the locking state when the driving motor is powered off, and the problem that a moving group in the lens barrel can freely slide in the range of front and rear mechanical dead points and easily and firmly hit the front and rear dead points to damage the lens under the condition that the driving motor is powered off and cannot be self-locked is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic plan view of a self-locking device according to an embodiment of the present invention;
FIG. 2 is a schematic plan view of the second position-limiting portion and the driving portion of FIG. 1;
FIG. 3 is a schematic view of a first embodiment of the self-locking device of FIG. 1 in an unlocked state;
FIG. 4 is a schematic view of the self-locking device of FIG. 2 in a locked state;
FIG. 5 is a schematic view of a second embodiment of the self-locking device of FIG. 1 in an unlocked state;
FIG. 6 is a schematic view of the self-locking device of FIG. 5 in a locked state;
FIG. 7 is a schematic view of a third embodiment of the self-locking device of FIG. 1 in an unlocked state;
fig. 8 is a schematic view of a locking state of the self-locking device in fig. 7.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Self- |
2 | |
| 1000 | |
21 | |
| 2000 | Fixed |
21a | Shaft core |
| a | A |
21b | Wear resistant layer |
| 1 | A |
22 | Mounting rack |
| 11 | |
3 | |
| 12 | Connecting |
31 | |
| 101 | |
32 | |
| 102 | Second side plate |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In the optical zoom lens based on the VCM motor, the moving group is in a lens barrel, two parallel guide shafts are fixed in the lens barrel, the moving group slides on the two guide shafts, and the moving range is limited by a front and back mechanical dead point in the lens barrel. The power source for moving the moving group is a VCM motor, the mover and the stator of the VCM motor are in non-contact, the VCM motor can not self-lock when the coil is not electrified, and at the moment, the moving group driven by the VCM motor in the lens is in a completely free state between the front mechanical dead point and the rear mechanical dead point along the guide shaft and can slide freely. In the process of transportation or movement, inevitably, a moving group in the lens barrel can freely slide in the range of front and rear mechanical dead points, so that the front and rear dead points are impacted hard, the lens can be crushed, the black mechanism is broken and other lens damage adverse effects can be caused, and the imaging and the service performance of the lens are seriously influenced.
In order to solve the above problems, the present invention provides a self-locking device 100 and an optical zoom lens, and fig. 1 to 8 are specific embodiments of the self-locking device 100 and the optical zoom lens provided by the present invention.
Referring to fig. 1 to 2, the present invention provides a self-locking device 100 for an optical zoom lens, the optical zoom lens includes a moving group 1000, a fixed group 2000 and a driving motor, the driving motor is configured to drive the moving group 1000 to be movably disposed along a first direction a relative to the fixed group 2000, the self-locking device 100 includes a first limiting portion 1, a second limiting portion 2 and a driving portion 3, the first limiting portion 1 is configured to be mounted on one of the moving group 1000 and the fixed group 2000, the second limiting portion 2 is configured to be mounted on the other of the moving group 1000 and the fixed group 2000, the second limiting portion 2 includes a locking member 21 movably disposed relative to the first limiting portion 1, the locking member 21 has a locking state of mutually limiting with the first limiting portion 1 and an unlocking state of releasing limiting with the first limiting portion 1, the driving part 3 is in driving connection with the locking piece 21 and is used for driving the locking piece 21 to be switched from the unlocking state to the locking state when the driving motor is powered off.
In the technical solution provided by the present invention, in the optical zoom lens, a component for focusing arranged in a lens barrel is a moving group 1000, a fixed group 2000 is further arranged relative to the moving group 1000, a power device for driving the moving group 1000 is a driving motor, the driving motor drives the moving group 1000 to move in a first direction a relative to the fixed group 2000, the moving group 1000 can move in a range defined by front and rear mechanical dead points, a self-locking device 100 includes a first limiting part 1, a second limiting part 2 and a driving part 3, the first limiting part 1 is used for being mounted on one of the moving group 1000 and the fixed group 2000, the second limiting part 2 is used for being mounted on the other of the moving group 1000 and the fixed group 2000, the second limiting part 2 further includes a locking piece 21 movably arranged relative to the first limiting part 1, the locking piece 21 has a locking state limiting mutually with the first limiting part 1 and an unlocking state releasing limiting with the first limiting part 1, the driving part 3 is in driving connection with the locking piece 21, the locking piece 21 is driven to move by arranging the driving part 3, the locking piece 21 is driven to be capable of being synchronously switched from the unlocking state to the locking state when the driving motor is powered off, and therefore the problem that when the driving motor is powered off and cannot be self-locked, the movable group 1000 in the lens barrel can freely slide in the range of front and rear mechanical dead points, and the front and rear dead points are easily and hard collided to damage the lens is solved.
Specifically, in this embodiment, the driving portion 3 includes a locking motor 31 and a resetting member 32, the locking motor 31 is configured to maintain the lock member 21 in the unlocked state, the resetting member 32 is configured to provide a resetting force to the lock member 21 so as to switch the lock member 21 from the unlocked state to the locked state, the locking motor 31 may be configured to supply and cut off power synchronously with the driving motor, and the synchronous supply and cut off power may be configured by configuring the circuits of the locking motor 31 and the driving motor in a serial manner or by implementing synchronous operation through a controller. When the driving motor and the locking motor 31 are simultaneously electrified, the locking motor 31 works, so that the locking piece 21 is kept in the unlocking state, and meanwhile, the driving motor drives the moving group 1000 to move along the first direction a; when the driving motor and the locking motor 31 are powered off simultaneously, the driving motor stops working, and when self-locking cannot be achieved, the moving group 1000 in the lens barrel can freely move within a mechanical dead point range along the first direction a, at this time, the locking motor 31 also stops working, and the locking member 21 cannot be maintained in the unlocking state, at this time, the resetting member 32 provides resetting force for the locking member 21, so that the locking member 21 is switched to the locking state, and the moving group 1000 is locked at the current position when the power is off, so that self-locking is achieved.
Specifically, in this embodiment, the spacing portion 2 of second is still including being used for being fixed in remove crowd 1000 with fixed crowd 2000 in wherein another mounting bracket 22, locking piece 21 movably locates mounting bracket 22, piece 32 that resets includes the torsional spring, the one end of torsional spring connect in mounting bracket 22, the other end connect in locking piece 21, work as locking motor 31 during operation, locking motor 31 drives locking piece 21 is movable, elastic deformation takes place for the torsional spring, locking motor 31 overcomes the elasticity restoring force of torsional spring makes locking piece 21 activity extremely unblock state, works as when locking motor 31 cuts off the power supply, locking motor 31 stops driving, torsional spring resumes deformation, makes locking piece 21 cuts back to again locking state, so sets up simple structure.
Specifically, in this embodiment, the first limiting portion 1 is formed with a limiting groove, the locking member 21 is at least partially located in the limiting groove and is rotatably disposed relative to the limiting groove, the locking member 21 is in the locking state and is abutted to the inner wall of the limiting groove, when the locking member 21 is abutted to the inner wall of the limiting groove, a friction force for preventing relative movement is provided between the locking member 21 and the inner wall of the limiting groove, the whole moving group 1000 is also in a relatively stationary state through the friction force acting on the inner wall of the limiting groove, and in the unlocking state, the locking member 21 is spaced from the inner portion of the limiting groove, the locking member 21 no longer generates a friction force on the inner wall of the limiting groove, and the first limiting portion 1 is in a free state and is switchable from the locking state to the unlocking state. Through rotating locking piece 21, change locking piece 21 with the position of the locking point that spacing groove carries out the locking to conveniently realize locking and unblock.
Specifically, since the moving group 1000 can move along the first direction a, in order to enable the moving group 1000 to be locked in time when moving to any position in the first direction a, in this embodiment, the limiting groove extends along the first direction a, the notch of the limiting groove faces the locking member 21, the locking member 21 is elongated and extends along the first direction a, and is rotatably disposed around the rotating shaft extending along the first direction a, so that when the moving group 1000 moves to any position along the first direction a, the limiting groove can be abutted and matched with the corresponding locking point on the locking member 21, the cross-sectional shape of the locking member 21 is polygonal, and when the locking member 21 is rotated, because the distance from the rotating shaft to the inner wall of the limiting groove is constant, the convex vertex part of the locking member 21 is closer to the inner wall of the limiting groove, the distance between the inner wall of the limiting groove and the rotating shaft can be set to be adaptive, the convex peak of the locking piece 21 can be abutted against the inner wall of the limiting groove in the rotating process, and the distance between the convex peak and the inner wall of the limiting groove in the rotating process is kept at a place without the peak, so that the interference on the limiting groove is avoided. In order to enable the locking member 21 to have the above two states with the limiting groove when rotating, the shape of the limiting groove can be matched with the shape of the cross section of the locking member 21, and it is only required to ensure that at least one vertex of the multiple vertexes of the polygon is abutted against the inner wall of the limiting groove in the locking state.
Specifically, in order to make the locking effect more stable, the number of vertexes that can abut against each other with the inner wall of the limiting groove is more, so that the interference effect is better, in this embodiment, the first limiting portion 1 may be configured as a C-shaped groove, specifically, the first limiting portion 1 includes a connecting plate 12 and two side plates 11, the two side plates 11 are respectively connected with the connecting plate 12 and are arranged at intervals to form the limiting groove by enclosing with the connecting plate 12, in order to adapt to the limiting groove, the locking member 21 may be configured as a bar column with a square cross section, in the locking state, three vertexes of four vertexes of the square abut against the connecting plate 12 and the two side plates 11 respectively in a one-to-one correspondence, and the shape of the first limiting portion 1 and the locking member 21 set above is an optimal embodiment, so that the friction force between the locking member 21 and the inner wall of the limiting groove can be strengthened to the greatest extent.
Specifically, since 3 vertexes are arranged to interfere with the inner wall of the limiting groove, the requirement on the precision of the position of the rotating shaft of the locking member 21 is high, and in order to facilitate the quantitative production and the handling and control of the actual installation precision, in the second embodiment, the first limiting portion 1 includes a connecting plate 12 and two side plates 11, the two side plates 11 are connected with the connecting plate 12 respectively and are arranged at intervals to form the limiting groove by enclosing with the connecting plate 12,
the cross section of the locking member 21 may be rectangular, so that in the locked state, two non-adjacent vertexes of the four vertexes of the rectangle abut against the two side plates 11 in a one-to-one correspondence manner, and thus, although the number of interference points is reduced by one, the control of the mounting accuracy is simpler for the processing.
Specifically, in order to simplify the structure of the first limiting portion 1 more and achieve a similar effect, in the third embodiment, the first limiting portion 1 may be configured to include a first side plate 101 and a second side plate 102, the first side plate 101 and the second side plate 102 are arranged at an included angle to form the limiting groove in an enclosing manner, the cross-sectional shape of the locking member 21 is a triangle, in the locking state, two of three vertexes of the triangle respectively abut against the first side plate 101 and the second side plate 102 in a one-to-one correspondence manner, and of course, only one vertex may be ensured to abut against the first side plate 101 or the second side plate 102.
Further, in order to make the locking effect more stable, on one hand, the number of vertexes abutting against each other between the locking member 21 and the inner wall of the limiting groove may be increased, and friction may also be increased by providing a material, in this embodiment, the driving portion 3 includes a locking motor 31 and a resetting member 32, the locking motor 31 is configured to maintain the locking member 21 in the unlocking state, the resetting member 32 is configured to provide a resetting force to the locking member 21, so that the locking member 21 is switched from the unlocking state to the locking state, the locking member 21 includes a shaft core 21a extending along the first direction a and a wear-resistant layer 21b disposed on the outer periphery of the shaft core 21a, the locking motor 31 and the resetting member 32 are in driving connection with the shaft core 21a and configured to drive the locking member 21 to rotate around the shaft core 21a, and the wear-resistant layer 21b is made of an elastic material, the axle core 21a is steel or other hard materials usually, and wearing layer 21b material is rubber or bubble cotton etc. usually, can understand, lock piece 21 also can be set up to hard material, and will the inner wall of spacing groove sets up to soft material, works as lock piece 21 with when the inner wall of spacing groove interferes, and certain deformation takes place for soft elastic material, and when external force disappeared, elastic material was right the inner wall of spacing groove produces reset force, can make things convenient for like this lock piece 21 can maintain the locking state.
The present invention further provides an optical zoom lens, where the optical zoom lens includes a fixed group 2000, a moving group 1000, a driving motor, and the self-locking device 100, where the moving group 1000 is movably disposed along a first direction a relative to the fixed group 2000, the driving motor is in driving connection with the moving group 1000, and is used to drive the moving group 1000 to move along the first direction a, the optical zoom lens includes the self-locking device 100, and the specific structure of the self-locking device 100 refers to the above embodiments.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a self-lock device for optical zoom, optical zoom is including moving crowd, fixed crowd and driving motor, driving motor is used for the drive move the crowd relatively fixed crowd movably sets up along first direction, its characterized in that, self-lock device includes:
a first stopper portion for being mounted on one of the moving group and the fixed group;
the second limiting part is used for being installed on the other one of the moving group and the fixed group and comprises a locking piece movably arranged relative to the first limiting part, and the locking piece has a locking state of limiting the first limiting part and an unlocking state of releasing limiting with the first limiting part; and the number of the first and second groups,
and the driving part is in driving connection with the locking piece and is used for driving the locking piece to be switched to the locking state from the unlocking state when the driving motor is powered off.
2. The self-locking device of claim 1, wherein the driving portion includes a latch motor to maintain the latch member in the unlocked state and a reset member to provide a reset force to the latch member to switch the latch member from the unlocked state to the locked state.
3. The self-locking device of claim 2, wherein the second limiting portion further comprises a mounting bracket for being fixed to the other of the movable group and the fixed group, the locking member is movably disposed on the mounting bracket, the resetting member comprises a torsion spring, one end of the torsion spring is connected to the mounting bracket, and the other end of the torsion spring is connected to the locking member.
4. The self-locking device according to any one of claims 1 to 3, wherein the first position-limiting portion is formed with a position-limiting groove, the lock member is at least partially disposed in the position-limiting groove and is rotatably disposed relative to the position-limiting groove, the lock member abuts against an inner wall of the position-limiting groove in the locked state, and is spaced apart from an inside of the position-limiting groove in the unlocked state.
5. The self-locking device of claim 4, wherein the limiting groove extends along the first direction, and a notch of the limiting groove faces the locking member;
the locking piece is followed the microscler that first direction extends, and winds the pivot that first direction extends rotationally sets up, the cross sectional shape of locking piece is the polygon under the locking state, at least one in a plurality of summits of polygon the summit with the inner wall mutual butt of spacing groove.
6. The self-locking device of claim 5, wherein the first limiting portion comprises a connecting plate and two side plates, the two side plates are respectively connected with the connecting plate and are spaced apart from each other to form the limiting groove with the connecting plate;
the polygon is a square, and under the locking state, three vertexes of four vertexes of the square are respectively abutted against the connecting plate and the two side plates in a one-to-one correspondence manner.
7. The self-locking device of claim 5, wherein the first limiting portion comprises a connecting plate and two side plates, and the two side plates are connected with the connecting plate respectively and are arranged at intervals to form the limiting groove by enclosing with the connecting plate;
the polygon is a rectangle, and in the locked state, two nonadjacent vertexes of the four vertexes of the rectangle are respectively abutted against the two side plates in a one-to-one correspondence manner.
8. The self-locking device of claim 5, wherein the first limiting portion comprises a first side plate and a second side plate, and the first side plate and the second side plate are arranged at an included angle to enclose the limiting groove;
the cross section of the locking piece is triangular, and in the locking state, two vertexes of three vertexes of the triangle are respectively abutted to the first side plate and the second side plate in a one-to-one correspondence mode.
9. The self-locking device of claim 4, wherein the driving portion includes a latch motor to maintain the latch member in the unlocked state and a reset member to provide a reset force to the latch member to switch the latch member from the unlocked state to the locked state;
the locking piece includes the edge the axle core that the first direction extends with locate the wearing layer of axle core periphery, locking motor reaches reset the piece with the axle core drive is connected, is used for the drive the locking piece winds the axle core rotates, the material of wearing layer is the elasticity material.
10. An optical zoom lens, comprising:
a fixed group;
a movable group movably arranged along a first direction relative to the fixed group;
the driving motor is in driving connection with the moving group and used for driving the moving group to move along the first direction; and the number of the first and second groups,
self-locking device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110793931.1A CN113467041A (en) | 2021-07-13 | 2021-07-13 | Self-locking device and optical zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110793931.1A CN113467041A (en) | 2021-07-13 | 2021-07-13 | Self-locking device and optical zoom lens |
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| Publication Number | Publication Date |
|---|---|
| CN113467041A true CN113467041A (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110793931.1A Pending CN113467041A (en) | 2021-07-13 | 2021-07-13 | Self-locking device and optical zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113467041A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4533218A (en) * | 1982-07-30 | 1985-08-06 | Sony Corporation | Zoom lens operating mechanisms |
| JPS62116926A (en) * | 1985-11-18 | 1987-05-28 | Seiko Koki Kk | Automatic focus adjusting device for camera |
| US20050281613A1 (en) * | 2004-06-17 | 2005-12-22 | Tella Richard P | Cam-locking positioning mechanism |
| CN102540640A (en) * | 2010-12-15 | 2012-07-04 | 三星电子株式会社 | Apparatus for transferring optical element including brake |
| CN206523695U (en) * | 2017-03-02 | 2017-09-26 | 松下电器（中国）有限公司苏州***网络研究开发分公司 | A kind of unstressed locking device for being applied to lens focus or zoom |
| CN110007422A (en) * | 2019-04-19 | 2019-07-12 | 东莞市普密斯精密仪器有限公司 | A kind of continuous zoom lens with linear motor and self-locking function |
-
2021
- 2021-07-13 CN CN202110793931.1A patent/CN113467041A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4533218A (en) * | 1982-07-30 | 1985-08-06 | Sony Corporation | Zoom lens operating mechanisms |
| JPS62116926A (en) * | 1985-11-18 | 1987-05-28 | Seiko Koki Kk | Automatic focus adjusting device for camera |
| US20050281613A1 (en) * | 2004-06-17 | 2005-12-22 | Tella Richard P | Cam-locking positioning mechanism |
| CN102540640A (en) * | 2010-12-15 | 2012-07-04 | 三星电子株式会社 | Apparatus for transferring optical element including brake |
| CN206523695U (en) * | 2017-03-02 | 2017-09-26 | 松下电器（中国）有限公司苏州***网络研究开发分公司 | A kind of unstressed locking device for being applied to lens focus or zoom |
| CN110007422A (en) * | 2019-04-19 | 2019-07-12 | 东莞市普密斯精密仪器有限公司 | A kind of continuous zoom lens with linear motor and self-locking function |
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