CN113608316A - Zoom lens self-locking device and lens - Google Patents
Zoom lens self-locking device and lens Download PDFInfo
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- CN113608316A CN113608316A CN202110895007.4A CN202110895007A CN113608316A CN 113608316 A CN113608316 A CN 113608316A CN 202110895007 A CN202110895007 A CN 202110895007A CN 113608316 A CN113608316 A CN 113608316A
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- shape memory
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- memory alloy
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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
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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
- G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/32—Means for focusing
- G03B13/34—Power focusing
Abstract
The invention discloses a self-locking device of a zoom lens and a lens, wherein the self-locking device of the zoom lens comprises a lens barrel, a movable carrier, a locking mechanism, a deformation driving piece and a conductive structure, wherein the movable carrier is movably arranged in the inner cavity of the lens barrel along the length direction of the lens barrel; the locking mechanism comprises a matching part connected with the lens barrel and a locking part movably connected with the movable carrier so as to limit the movable carrier when the locking mechanism is locked with the matching part; the deformation driving piece is arranged in a telescopic manner, and two ends of the deformation driving piece are respectively connected to the movable carrier and the locking part so as to drive the locking part to move; through conducting structure is connected with the power electricity, deformation driving piece circular telegram is extended or is contract, drives locking portion with cooperation portion cooperation locking restricts the removal carrier is in the activity on the lens cone is effectively right the removal carrier carries out the locking, avoids producing the striking and causes the lens to hit the bits of broken glass, black thing mechanism fracture's phenomenon, increase of service life.
Description
Technical Field
The invention relates to the technical field of zoom lenses, in particular to a self-locking device of a zoom lens and a lens.
Background
In the optical zoom lens based on the VCM motor, a moving group is positioned 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 of the moving group is limited by front and back mechanical dead points 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 along the guide shaft between the front mechanical dead point and the rear mechanical dead point and can slide freely. In the process of transportation or movement, inevitably, the moving group in the lens barrel can freely slide in the range of the front and rear mechanical dead points, so that the front and rear dead points are hit hard, the lens can be broken by collision, 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.
And the general optical zoom lens has smaller volume, and each part in the lens is tiny and compact, and the circuit is messy.
Disclosure of Invention
The invention mainly aims to provide a self-locking device of a zoom lens and the lens, and aims to solve the problems that in the transportation or moving process of the lens, a moving group in a lens barrel can freely slide in the range of front and rear mechanical dead points so as to hard hit the front and rear dead points, lens damage is caused by lens crushing, a black object mechanism is broken and the like, and a circuit is disordered and possibly interferes with other parts.
In order to achieve the above object, the present invention provides a self-locking device for a zoom lens, including:
a lens barrel provided with an inner cavity;
the movable carrier is movably arranged in the inner cavity along the length direction of the lens cone;
the locking mechanism comprises a locking part and a matching part, the matching part is connected to the lens barrel, the locking part is movably connected to the movable carrier so as to be matched with the matching part for locking or separating, and the movement of the movable carrier on the lens barrel is limited when the locking part is locked with the matching part;
the two ends of the deformation driving piece are respectively connected to the movable carrier and the locking part, and the deformation driving piece is telescopically arranged so as to drive the locking part to move to be matched with the matching part in a locking manner through telescoping; and the number of the first and second groups,
and the conductive structure is connected with the deformation driving piece and is electrically connected with a power supply so as to enable the deformation driving piece to be electrified and extended or contracted.
Optionally, the deformation driving member includes a two-way shape memory alloy spring, and the two-way shape memory alloy spring is used for stretching and contracting when switching between power-on and power-off to drive the locking portion to move.
Optionally, the two-way shape memory alloy spring has:
a first deformation mode in which the two-way shape memory spring has a deformation that contracts when energized and expands when de-energized; alternatively, the first and second electrodes may be,
a second deformation mode in which the two-way shape memory spring has a deformation that expands when energized and contracts when de-energized.
Optionally, the movable carrier is provided with an adapter, the locking part is connected with a supporting piece, the supporting piece extends from the movable carrier to the matching part, and the supporting piece is movably connected to the adapter along the moving direction of the locking part;
the two-way shape memory alloy spring is sleeved on the periphery of the supporting piece, one end of the two-way shape memory alloy spring is connected to the adapter, and the other end of the two-way shape memory alloy spring is connected to the locking portion so as to drive the supporting piece to drive the locking portion to move to be matched with the matching portion in a locking mode.
Optionally, the adapter is provided with a first boss adapted to one end of the two-way shape memory alloy spring, the locking part is provided with a second boss adapted to the other end of the two-way shape memory alloy spring, the first boss and the second boss are used for connecting the corresponding ends, and the first boss and the second boss are arranged on the periphery of the support rod in a protruding manner;
the adapter is provided with a connecting hole extending along the moving direction of the locking part, the connecting hole penetrates through the first boss, and the support piece movably penetrates through the connecting hole.
Optionally, the circumferential side surfaces of the first boss and the second boss are provided with threads adapted to the two-way shape memory alloy spring, and each end portion is sleeved on the corresponding boss to be matched with the threads.
Optionally, the conductive structure includes a first conductive metal sheet disposed on the moving carrier and a second conductive metal sheet located on an end surface of the interposer;
one end of the two-way shape memory alloy spring is sleeved on the first boss and is abutted against the second conductive metal sheet;
one end of the supporting piece, which is far away from the locking part, is in sliding butt joint with the first conductive metal sheet.
Optionally, the two-way shape memory alloy spring is in the first deformation mode, the locking part includes a locking plate, a plurality of protrusions are disposed on an end side of the locking plate facing the inner side wall of the lens barrel, the matching part includes a plurality of grooves disposed on the inner side wall of the lens barrel, and the plurality of protrusions are matched with the plurality of grooves;
and the two-way shape memory alloy spring is powered off and extends to drive the locking plate to be in butt joint with the inner side wall of the lens cone so as to limit the movement of the movable carrier on the lens cone.
Optionally, the two-way shape memory alloy spring is in the second deformation mode, the locking portion includes a locking plate, the matching portion includes a matching plate, the matching plate is opposite to the inner side wall of the lens barrel, and the locking plate is opposite to the matching plate and is located between the inner side wall of the lens barrel and the matching plate;
and the two-way shape memory alloy spring is powered off and contracted to drive the locking plate to abut against the matching plate so as to limit the movement of the movable carrier on the lens cone.
The present invention also provides a lens barrel, including:
the self-locking structure of the zoom lens comprises a lens barrel, a movable carrier locking mechanism, a deformation driving piece and a conductive structure, wherein the lens barrel is provided with an inner cavity; the movable carrier is movably arranged in the inner cavity along the length direction of the lens barrel; the locking mechanism comprises a locking part and a matching part, the matching part is connected to the lens barrel, the locking part is movably connected to the movable carrier so as to be matched with the matching part for locking or separating, and the movement of the movable carrier on the lens barrel is limited when the locking part is locked with the matching part; the two ends of the deformation driving piece are respectively connected to the movable carrier and the locking part, and the deformation driving piece is telescopically arranged so as to drive the locking part to move to be matched with the matching part in a locking manner through telescoping; the conductive structure is connected with the deformation driving piece and is used for being electrically connected with a power supply so as to enable the deformation driving piece to be electrified and extend or contract; and the number of the first and second groups,
and the guide shaft penetrates through the movable carrier, is arranged in the inner cavity along the length direction of the lens cone and is used for slidably connecting the movable carrier.
In the technical scheme of the invention, the movable carrier is movably arranged in the inner cavity along the length direction of the lens cone; self-locking mechanism includes locking portion and cooperation portion, cooperation portion connect in the lens cone, locking portion swing joint in remove the carrier, with can with cooperation portion cooperation locking or break away from, the both ends of deformation driving piece connect respectively in remove the carrier with locking portion, just deformation driving piece telescopically sets up, the deformation driving piece is connected with electrically conductive structure, electrically conductive structure is used for being connected with the power electricity, makes deformation driving piece circular telegram extends or contracts, with the drive locking portion with cooperation portion cooperation locking, thereby the restriction remove the carrier and be in activity on the lens cone is effective right it carries out the locking to remove the carrier, avoids producing the striking and causes the lens to hit the bits of broken glass, black thing mechanism fracture's phenomenon, increase of service life.
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 perspective view of a self-locking device of a zoom lens according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of the adapter in fig. 1 connected to a mobile carrier;
FIG. 3 is a schematic side view of the docking station of FIG. 1;
FIG. 4 is a schematic front view of the support member and the latch portion of FIG. 1;
fig. 5 is a schematic top view of another embodiment of the locking mechanism provided in the present invention.
The reference numbers illustrate:
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, a moving group is positioned 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 of the moving group is limited by front and back mechanical dead points 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 along the guide shaft between the front mechanical dead point and the rear mechanical dead point and can slide freely. In the process of transportation or movement, inevitably, the moving group in the lens barrel can freely slide in the range of the front and rear mechanical dead points, so that the front and rear dead points are hit hard, the lens can be broken by collision, 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.
And the general optical zoom lens has smaller volume, and each part in the lens is tiny and compact, and the circuit is messy.
In view of this, the present invention provides a self-locking device of a zoom lens and a lens thereof, which can effectively lock the movable carrier, protect the lens, avoid the movable carrier from being impacted on the lens barrel, and avoid the problem of interference with other components due to the disordered lines, wherein fig. 1 to 4 are an embodiment of the self-locking device of the zoom lens provided by the present invention, and fig. 5 is another embodiment of the locking mechanism provided by the present invention.
Referring to fig. 1, a self-locking device 100 of a zoom lens provided by the present invention includes a lens barrel 1, a movable carrier 2, a locking mechanism 3, a deformable driving member 4, and a conductive structure, wherein the lens barrel 1 is provided with an inner cavity 11; the movable carrier 2 is movably arranged in the inner cavity 11 along the length direction of the lens barrel 1; the locking mechanism 3 comprises a locking part 31 and a matching part 32, the matching part 32 is connected to the lens barrel 1, the locking part 31 is movably connected to the movable carrier 2 so as to be matched and locked or separated with the matching part 32, and the movable carrier 2 is limited on the lens barrel 1 when being locked with the matching part 32; two ends of the deformation driving member 4 are respectively connected to the movable carrier 2 and the locking part 31, and the deformation driving member 4 is telescopically arranged to telescopically drive the locking part 31 to move to be locked and matched with the matching part 32; the conductive structure is connected to the deformation driving member 4 and electrically connected to a power supply, so that the deformation driving member 4 is electrically extended or contracted.
In the technical scheme of the invention, the movable carrier 2 is movably mounted in the inner cavity 11 along the length direction of the lens barrel 1; locking mechanism includes locking portion 31 and cooperation portion 32, cooperation portion 32 connect in lens cone 1, locking portion 31 swing joint in remove carrier 2, in order can with cooperation portion 32 cooperation locking or break away from, the both ends of deformation driving piece 4 connect respectively remove carrier 2 with locking portion 31, just deformation driving piece 4 sets up telescopically, deformation driving piece 4 is connected with conductive structure, conductive structure is used for being connected with the power electricity, makes deformation driving piece 4 circular telegram extend or shrink, with the drive locking portion 31 with cooperation portion 32 cooperation locking, thereby the restriction remove carrier 2 is in activity on the lens cone 1 is effective right remove carrier 2 carries out the locking, avoids producing the striking and causes the lens to hit the bits of broken glass, black thing mechanism fracture's phenomenon, increase of service life.
In this application, in order to realize that the deformation driving member 4 can be driven in a deformation manner, please continue to refer to fig. 1, the deformation driving member 4 includes a two-way shape memory alloy spring 41, the two-way shape memory alloy spring 41 is used for stretching when switching between power-on and power-off, so as to drive the locking portion 31 to be away from the matching portion 32 when switching on, so as to ensure the normal operation of the movable carrier 2, and drive the locking portion 31 to be close to the matching portion 32 when switching off, so as to enable the locking portion 31 to be movably matched and locked with the matching portion 32, thereby limiting the movement of the movable carrier 2 on the lens barrel 1. So set up, the structure is light, occupies smallly.
Specifically, in order to realize that the movable carrier 2 is in a locked state when power is off and slides normally when power is on, in the present embodiment, the two-way shape memory alloy spring 41 has a first deformation mode or a second deformation mode; in the first deformation mode, the two-way shape memory alloy spring 41 has a deformation that contracts when energized and expands when de-energized, and in the second deformation mode, the two-way shape memory alloy spring 41 has a deformation that expands when energized and contracts when de-energized.
In order to support the locking portion 31 and avoid the situation that the locking portion 31 cannot be supported due to the inclination of the two-way shape memory alloy spring 41 caused by insufficient rigidity, which affects the locking effect, in this embodiment, referring to fig. 1 and 2, the movable carrier 2 is provided with an adapter 21, the locking portion 31 is connected with a support member 311, the support member 311 extends from the movable carrier 2 to the matching portion 32, and is movably connected to the adapter 21 along the moving direction of the locking portion 31; the two-way shape memory alloy spring 41 is sleeved on the periphery of the supporting part 311, one end of the two-way shape memory alloy spring is connected to the adapter 21, and the other end of the two-way shape memory alloy spring is connected to the supporting part 311, so that when the power is off, the two-way shape memory alloy spring 41 can extend or contract to drive the locking part 31 to move, and the supporting part 311 is driven to move along the moving direction of the locking part 31 to support the locking part 31. With this arrangement, it is prevented that the locking portion 31 cannot be supported due to the insufficient rigidity of the two-way shape memory alloy spring 41, which is inclined, so that the locking portion cannot be locked, thereby improving the stability.
Specifically, in this embodiment, referring to fig. 1 to 3, the adapter 21 is provided with a first boss 211 adapted to one end of the two-way shape memory alloy spring 41, the locking portion 31 is provided with a second boss 312 adapted to the other end of the two-way shape memory alloy spring 41, and the support 311 is fixedly connected to an end surface of the second boss 312 facing the first boss 211; the first boss 211 and the second boss 312 are used for connecting the corresponding end portions; the adapter 21 is provided with a connecting hole 212 extending along the moving direction of the locking part 31, the connecting hole 212 penetrates through the first boss 211, and the supporting part 311 is movably inserted into the connecting hole 212, so that the supporting part 311 is movably mounted on the adapter 21 along the moving direction of the locking part 31; the first boss 211 and the second boss 312 are both protruded from the outer circumference of the supporting member 311, and the first boss 211 and the second boss 312 are protruded from the supporting member 311 in the radial direction, so that when the two-way shape memory alloy spring 41 extends and contracts to drive the supporting member 311 to move, the two-way shape memory alloy spring 41 and the supporting member 311 do not generate friction, thereby ensuring smooth movement to drive the locking process of the locking portion 31. Therefore, the structure is simple and the operation is stable.
This application does not restrict support piece 311 is followed locking part 31's activity direction movable mounting in adapter 21's structure, in other embodiments, adapter 21 can set up to the guide rail, support piece 311 can set up to with guide rail complex supporting shoe, one section sliding connection of supporting shoe in the guide rail, other end fixedly connected with locking part 31, thereby realize support piece 311 swing joint in adapter 21.
The present application does not limit the structure of the connection between the two-way shape memory alloy spring 41 and the first boss 211 and the second boss 312, and each of the end portions may be fixedly connected to the first boss 211 and the second boss 312 by welding, in this embodiment, please refer to fig. 2 to 4, in order to stably connect the two-way shape memory alloy spring 41 and the first boss 211 and the second boss 312, the circumferential side surfaces of the first boss 211 and the second boss 312 are both provided with a thread b adapted to the two-way shape memory alloy spring 41, and each of the end portions is sleeved on the corresponding boss to cooperate with the thread b so as to stably connect each of the end portions to each of the bosses. Simple structure connects firmly, prevents that the tip is followed to correspond drop on the boss and lead to unable restriction remove carrier 2 activity, improvement stability.
In order to turn on the two-way shape memory alloy spring 41 to be expanded or contracted when switching between power-on and power-off, in the embodiment, referring to fig. 2 and 3, the conductive structure includes a first conductive metal sheet 51 disposed on the mobile carrier 2 and a second conductive metal sheet 52 disposed on an end surface of the adaptor 21; the first conductive metal sheet 51 and the second conductive metal sheet 52 are respectively connected to the positive and negative electrodes of a power supply, the second conductive metal sheet 52 is arranged on the end wall surface of the adapter 21, one end of the two-way shape memory alloy spring 41 is screwed and sleeved on the first boss 211 and is matched with the thread b on the peripheral side surface of the first boss 211, and the end surface of one end of the two-way shape memory alloy spring is abutted against the second conductive metal sheet 52 on the side wall surface of the adapter 21, so that the two-way shape memory alloy spring is fixedly connected to the first boss 211 and one end of the two-way shape memory alloy spring is electrically connected to the power supply through the second conductive metal sheet 52; the adapter 21 is arranged on the side wall of the movable carrier 2, the other end of the two-way shape memory alloy spring 41 is connected to the second boss 312, the second boss 312 is connected with a supporting piece 311, the supporting piece is set to be a metal conducting rod 3111, one end, far away from the locking part 31, of the metal conducting rod 3111 is arranged in the connecting hole 212 in a penetrating manner, the outer side wall of the metal conducting rod 3111 is in sliding abutting connection with the first conducting metal sheet 51 on the upper end face of the adapter 21, and therefore the other end of the two-way shape memory alloy spring 41 is electrically connected with a power supply. Thus, the heat of the two-way shape memory alloy spring 41 can be controlled by controlling the current flowing in the two-way shape memory alloy spring 41, and the expansion and contraction of the two-way shape memory alloy spring 41 can be further controlled; and the first conductive metal sheet 51 and the second conductive metal sheet 52 are electrically connected with the positive electrode and the negative electrode of the power supply, so that the problem of disordered or interference of circuits can be avoided.
In order to lock and engage the locking portion 31 with the engaging portion 32, in this embodiment, referring to fig. 1, 2 and 4, when the two-way shape memory alloy spring 41 is in the first deformation mode, the locking portion 31 includes a locking plate 313, a plurality of protrusions 3131 are disposed on an end side of the locking plate 313 facing an inner side wall of the lens barrel 1, the engaging portion 32 includes a plurality of grooves 12 disposed on the inner side wall of the lens barrel 1, and the plurality of protrusions 3131 are adapted to the plurality of grooves 12; when the power supply is powered on, the two-way shape memory alloy spring 41 is powered on and contracted to drive the supporting piece 311 to move towards the direction away from the matching part 32, so that the locking plate 313 is far away from the groove 12, and the zoom function of the zoom lens is not hindered; when the power is off, the two-way shape memory alloy spring 41 is powered off and extends to drive the supporting member 311 to move toward the direction close to the groove 12, so that the protrusions 3131 of the locking plate 313 are in abutting fit with the grooves 12, thereby limiting the movement of the movable carrier 2 on the lens barrel 1 or effectively reducing the impact force when the movable carrier 2 moves. Thus, the matching is simple, and the service life is effectively prolonged.
In another embodiment, referring to fig. 5, the two-way shape memory alloy spring 41 is in the second deformation mode, the locking portion 31 includes a locking plate 313, the matching portion 32 includes a matching plate 321, the matching plate 321 is disposed opposite to the inner side wall of the lens barrel 1, and the locking plate 313 is disposed opposite to the matching plate 321 and between the inner side wall of the lens barrel 1 and the matching plate 321; the matching part 32 comprises a connecting plate 322, and the connecting plate 322 connects the inner side wall of the lens barrel 1 and the matching plate 321; the two-way shape memory alloy spring 41 is electrified and expanded to drive the supporting part 311 to drive the locking plate 313 to move towards the direction away from the matching plate 321 until the locking plate 313 and the matching plate 321 are oppositely arranged, so as to ensure the normal movement of the movable carrier 2; the two-way shape memory alloy spring 41 is powered off and contracted, the supporting part 311 is driven to drive the locking plate 313 to move towards the direction close to the matching plate 321 to abut against the matching plate 321, so that the movement of the movable carrier 2 on the lens barrel 1 is limited, and the length of the matching plate 321 is matched with the movement stroke of the movable carrier 2, so that the movement of the movable carrier 2 is limited at any position. Thus, the restriction is more stable.
The invention provides a lens, please refer to fig. 1, the lens includes a self-locking device 100 of the zoom lens and a guide shaft a, the self-locking device 100 of the zoom lens specifically refers to the above embodiments, which are not described herein again, the guide shaft a is disposed in the inner cavity 11, penetrates through the moving carrier 2, and extends along the length direction of the lens barrel 1, and the guide shaft a is used for slidably connecting the moving carrier 2.
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. A self-locking device of a zoom lens is characterized by comprising:
a lens barrel provided with an inner cavity;
the movable carrier is movably arranged in the inner cavity along the length direction of the lens cone;
the locking mechanism comprises a locking part and a matching part, the matching part is connected to the lens barrel, the locking part is movably connected to the movable carrier so as to be matched with the matching part for locking or separating, and the movement of the movable carrier on the lens barrel is limited when the locking part is locked with the matching part;
the two ends of the deformation driving piece are respectively connected to the movable carrier and the locking part, and the deformation driving piece is telescopically arranged so as to drive the locking part to move to be matched with the matching part in a locking manner through telescoping; and the number of the first and second groups,
and the conductive structure is connected with the deformation driving piece and is electrically connected with a power supply so as to enable the deformation driving piece to be electrified and extended or contracted.
2. The self-locking device of a zoom lens according to claim 1, wherein the deformation driving member comprises a two-way shape memory alloy spring, and the two-way shape memory alloy spring is used for stretching and contracting when switching between power-on and power-off to drive the locking portion to move.
3. The zoom lens self-locking device according to claim 2, wherein the two-way shape memory alloy spring has:
a first deformation mode in which the two-way shape memory spring has a deformation that contracts when energized and expands when de-energized; alternatively, the first and second electrodes may be,
a second deformation mode in which the two-way shape memory spring has a deformation that expands when energized and contracts when de-energized.
4. The zoom lens self-locking device according to claim 3, wherein the movable carrier is provided with an adapter, the locking portion is connected to a support member, the support member extends from the movable carrier to the engaging portion, and is movably connected to the adapter along a moving direction of the locking portion;
the two-way shape memory alloy spring is sleeved on the periphery of the supporting piece, one end of the two-way shape memory alloy spring is connected to the adapter, and the other end of the two-way shape memory alloy spring is connected to the locking portion so as to drive the supporting piece to drive the locking portion to move to be matched with the matching portion in a locking mode.
5. The zoom lens self-locking device according to claim 4, wherein the adapter is provided with a first boss adapted to one end of the two-way shape memory alloy spring, the locking portion is provided with a second boss adapted to the other end of the two-way shape memory alloy spring, the first boss and the second boss are used for connecting the corresponding ends, and the first boss and the second boss are protruded from the outer periphery of the support rod;
the adapter is provided with a connecting hole extending along the moving direction of the locking part, the connecting hole penetrates through the first boss, and the support piece movably penetrates through the connecting hole.
6. The self-locking device of a zoom lens according to claim 5, wherein the first boss and the second boss are provided at peripheral sides thereof with threads adapted to the two-way shape memory alloy spring, and each of the end portions is fitted over the corresponding boss to be engaged with the threads.
7. The zoom lens self-locking device according to claim 5, wherein the conductive structure comprises a first conductive metal sheet disposed on the moving carrier and a second conductive metal sheet located on an end surface of the adapter;
one end of the two-way shape memory alloy spring is sleeved on the first boss and is abutted against the second conductive metal sheet;
one end of the supporting piece, which is far away from the locking part, is in sliding butt joint with the first conductive metal sheet.
8. The zoom lens self-locking device according to claim 3, wherein the two-way shape memory alloy spring is in the first deformation mode, the locking portion includes a locking plate, a plurality of protrusions are provided on an end side of the locking plate facing the inner side wall of the lens barrel, the engaging portion includes a plurality of grooves provided on the inner side wall of the lens barrel, and the plurality of protrusions are adapted to the plurality of grooves;
and the two-way shape memory alloy spring is powered off and extends to drive the locking plate to be in butt joint with the inner side wall of the lens cone so as to limit the movement of the movable carrier on the lens cone.
9. The zoom lens self-locking device according to claim 3, wherein the two-way shape memory alloy spring is in the second deformation mode, the locking portion includes a locking plate, the engaging portion includes a mating plate, the mating plate is disposed opposite to the inner sidewall of the lens barrel, and the locking plate is disposed opposite to the mating plate and between the inner sidewall of the lens barrel and the mating plate;
and the two-way shape memory alloy spring is powered off and contracted to drive the locking plate to abut against the matching plate so as to limit the movement of the movable carrier on the lens cone.
10. A lens barrel characterized by comprising:
the self-locking device of a zoom lens according to any one of claims 1 to 9; and the number of the first and second groups,
and the guide shaft penetrates through the movable carrier, is arranged in the inner cavity along the length direction of the lens cone and is used for slidably connecting the movable carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110895007.4A CN113608316A (en) | 2021-08-04 | 2021-08-04 | Zoom lens self-locking device and lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110895007.4A CN113608316A (en) | 2021-08-04 | 2021-08-04 | Zoom lens self-locking device and lens |
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| Publication Number | Publication Date |
|---|---|
| CN113608316A true CN113608316A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110895007.4A Pending CN113608316A (en) | 2021-08-04 | 2021-08-04 | Zoom lens self-locking device and lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116560071A (en) * | 2023-07-11 | 2023-08-08 | 北京瑞控信科技股份有限公司 | Quick reflection mirror based on memory alloy locking structure |
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2021
- 2021-08-04 CN CN202110895007.4A patent/CN113608316A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116560071A (en) * | 2023-07-11 | 2023-08-08 | 北京瑞控信科技股份有限公司 | Quick reflection mirror based on memory alloy locking structure |
| CN116560071B (en) * | 2023-07-11 | 2023-10-20 | 北京瑞控信科技股份有限公司 | Quick reflection mirror based on memory alloy locking structure |
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