CN107942467B - Lens locking and dismounting mechanism and method - Google Patents
Lens locking and dismounting mechanism and method Download PDFInfo
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- CN107942467B CN107942467B CN201711035866.6A CN201711035866A CN107942467B CN 107942467 B CN107942467 B CN 107942467B CN 201711035866 A CN201711035866 A CN 201711035866A CN 107942467 B CN107942467 B CN 107942467B
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- lens
- locking
- elastic locking
- elastic
- matching part
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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
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
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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
- G02B7/023—Mountings, adjusting means, or light-tight connections, for optical elements for lenses permitting adjustment
Abstract
The invention belongs to the field of machinery and discloses a mechanism and a method for locking and disassembling a lens, wherein the mechanism comprises a lens cone mounting seat provided with a first matching part, an elastic locking part and a lens locking sleeve sleeved outside the elastic locking part, the lens locking sleeve is provided with a second matching part, the second matching part is movably connected with the first matching part so that the lens locking sleeve can move along a locking direction and an unlocking direction, and the lens locking sleeve can push the elastic locking part when moving along the locking direction so that the elastic locking part provides a fixing force; the method is characterized in that the lens locking sleeve is adjusted to enable the lens locking sleeve to push the elastic locking piece so as to enable the elastic locking piece to provide a fixing force, and therefore the lens assembly is fixed and disassembled. The invention can realize the lens assembly locking and quick focusing functions of the lens assembly, and can not cause the deviation of the optical axis direction of the lens assembly.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to a mechanism and a method for locking and disassembling a lens.
Background
At present, when a lens assembly is installed and locked on a lens installation seat, a thread matching mode is usually adopted, the lens assembly is screwed into a lens barrel installation seat, the position of the lens assembly is rotationally adjusted until imaging is clear, the focusing process of a lens can be realized, and then the lens assembly is locked on the lens barrel installation seat by screwing a locking nut on the outer ring of a main lens barrel of the lens assembly. Often, in order to ensure the stability and reliability of the locking nut, a set screw needs to be screwed on the outer ring of the locking nut for fastening the locking nut and limiting the movement of the locking nut. On the contrary, when the lens assembly is disassembled or replaced, the lens assembly can not be unscrewed until the lens assembly is separated from the lens barrel mounting seat by unscrewing the set screw and then unscrewing the lock nut.
The focusing adjusting lens is characterized in that the locking screws (generally at least two) on the locking nut are loosened, the locking nut is unscrewed, the lens component is rotated, the locking nut is focused, the locking nut is screwed, and the locking screw is fastened in sequence every time. In view of the above problems of complicated operation and influence on the imaging effect, it is desirable to design a mechanism and a method for easily and conveniently replacing the lens, focusing and locking.
Disclosure of Invention
In view of the above defects or improvement requirements of the prior art, the present invention provides a lens locking mechanism and method, which aims to achieve rapid focusing and replacement of a lens without affecting the imaging effect, thereby solving the technical problems that the current focusing process is complicated and the imaging effect is affected.
In order to achieve the above object, according to one aspect of the present invention, there is provided a lens locking and dismounting mechanism, comprising a lens barrel mounting base having a first mating portion, an elastic locking member, and a lens locking sleeve sleeved outside the elastic locking member, wherein the lens locking sleeve is provided with a second mating portion movably connected to the first mating portion so that the lens locking sleeve can move in a locking direction and an unlocking direction, and the lens locking sleeve can push the elastic locking member when moving in the locking direction so that the elastic locking member provides a fixing force.
Preferably, locking direction is for making the lens lock sleeve supports and pushes away the direction of elastic retaining member, the unblock direction is for making the lens lock sleeve loosens and supports and push away the direction of elastic retaining member.
Preferably, locking direction is for making the direction of camera lens is held tightly to the elasticity retaining member, the unblock direction is for making the direction of camera lens is relaxed to the elasticity retaining member.
As a further preferred aspect, the locking direction includes a direction in which the lens locking sleeve moves toward the elastic locking member, and the unlocking direction includes a direction in which the lens locking sleeve moves toward the elastic locking member.
Preferably, first cooperation portion with second cooperation portion is assorted helicitic texture, second cooperation portion swing joint first cooperation portion is so that the lens lock sleeve can be followed locking direction and unblock direction and removed, the locking direction includes the lens lock sleeve is to being close to the direction that the lens cone mount pad removed, the unblock direction includes the lens lock sleeve is to keeping away from the direction that the lens cone mount pad removed, the lens lock sleeve is to being close to can support when the lens cone mount pad removes and push the elasticity retaining member, make the elasticity retaining member provides holding power.
Preferably, the holding force is a force of the elastic locker to lock the lens.
Preferably, the lens cone mounting seat is provided with a first positioning structure, the elastic locking piece is provided with a second positioning structure, and the second positioning structure is connected with the first positioning structure.
As a further preferred feature, the first positioning structure includes a limiting pin, the second positioning structure includes a limiting hole, and the limiting pin extends into the limiting hole, so that the elastic locking member is fixed to the lens barrel mounting seat.
As a further preference, the number of the limit pins is two.
As a further preferred feature, the first positioning structure includes a first boss wall, and the second positioning structure includes a second boss wall sleeved outside the first boss wall.
As a further preferred feature, the elastic locking member is a cylindrical structure formed by a plurality of strip-shaped materials, and the second positioning structure is disposed at one end of the cylindrical structure; the lens locking sleeve is sleeved on the cylindrical structure outside the elastic locking piece, and the lens locking sleeve can contract inwards to push the elastic locking piece to provide holding force.
As further preferred, the camera lens lock sleeve with elastic locking piece is the round platform form, second location structure set up in the main aspects of elastic locking piece, the main aspects and/or the tip of elastic locking piece are provided with the breach, the breach can make the tip of elastic locking piece receives to take place to warp when pushing away, so that elastic locking piece provides the holding power.
As a further preferable mode, the second fitting portion is provided at a large end of the lens locking sleeve.
As a further preferable mode, the large end of the elastic locking member is provided with a notch, and the limiting hole is one or more notches of the large end of the elastic locking member.
As a further preference, the indentation is adapted to narrow when pushed against, so that the resilient locking member provides the holding force.
Preferably, the lens locking and dismounting mechanism further comprises a lens assembly provided with a third matching part, the lens cone mounting base is provided with a fourth matching part matched and connected with the third matching part, and the elastic locking piece is sleeved outside the third matching part of the lens assembly.
As a further preference, the third mating portion and the fourth mating portion are of mating thread construction.
As a further preferred aspect, the lens locking and detaching mechanism further includes a seal ring provided to the fourth fitting portion, the seal ring being configured to fill a gap between the third fitting portion of the lens assembly and the fourth fitting portion of the barrel mount.
Still more preferably, the seal ring is an O-ring seal.
According to another aspect of the present invention, there is also provided a lens locking and dismounting method, including:
s1, obtaining a lens cone mounting seat provided with a first matching part, an elastic locking part and a lens locking sleeve provided with a second matching part, movably connecting the second matching part to the first matching part, and enabling the lens locking sleeve to be sleeved outside the elastic locking part, wherein the lens locking sleeve can move along a locking direction and an unlocking direction;
s2, adjusting the lens locking sleeve to enable the lens locking sleeve to move along the locking direction to push the elastic locking piece in a propping manner, so that the elastic locking piece provides a holding force.
Preferably, locking direction is for making the lens lock sleeve supports and pushes away the direction of elastic retaining member, the unblock direction is for making the lens lock sleeve loosens and supports and push away the direction of elastic retaining member.
Preferably, locking direction is for making the direction of camera lens is held tightly to the elasticity retaining member, the unblock direction is for making the direction of camera lens is relaxed to the elasticity retaining member.
As a further preferred aspect, the locking direction includes a direction in which the lens locking sleeve moves toward the elastic locking member, and the unlocking direction includes a direction in which the lens locking sleeve moves toward the elastic locking member.
Preferably, first cooperation portion with second cooperation portion is assorted helicitic texture, second cooperation portion swing joint first cooperation portion is so that the lens lock sleeve can be followed locking direction and unblock direction and removed, the locking direction includes the lens lock sleeve is to being close to the direction that the lens cone mount pad removed, the unblock direction includes the lens lock sleeve is to keeping away from the direction that the lens cone mount pad removed, the lens lock sleeve is to being close to can support when the lens cone mount pad removes and push the elasticity retaining member, make the elasticity retaining member provides holding power.
Preferably, between S1 and S2, further comprising:
and obtaining a lens assembly provided with a third matching part, wherein the lens cone mounting seat is provided with a fourth matching part matched and connected with the third matching part, and the third matching part of the lens assembly is connected to the fourth matching part of the lens cone mounting seat, so that the elastic locking piece is sleeved outside the third matching part of the lens assembly and focuses the lens assembly.
As a further preference, the third mating portion and the fourth mating portion are of mating thread construction.
Preferably, the step S2 includes:
adjusting the lens locking sleeve to enable the lens locking sleeve to move along the locking direction, wherein the lens locking sleeve pushes the elastic locking piece to enable the elastic locking piece to deform to provide a fixing force, so that the lens assembly is fixed;
the utility model discloses a lens, including lens, elastic locking piece, lens mount pad, lens locking sleeve, second location structure, first location structure, second location structure, elastic locking piece, lens barrel mount pad, lens locking sleeve and elastic locking piece, the lens locking sleeve with elastic locking piece is the round platform form, the lens barrel mount pad is equipped with first location structure, elastic locking piece is equipped with second location structure, second location structure connects first location structure, second location structure set up in elastic locking piece's main aspects and/or tip are provided with the breach, the breach can make elastic locking piece's tip receives to take place to warp when pushing away, so that elastic locking piece provides fixing power.
As a further preferred feature, the first positioning structure includes a limiting pin, the second positioning structure includes a limiting hole, and the limiting pin extends into the limiting hole, so that the elastic locking member is fixed to the lens barrel mounting seat.
As a further preference, the number of the limit pins is two.
As a further preferred feature, the first positioning structure includes a first boss wall, and the second positioning structure includes a second boss wall sleeved outside the first boss wall.
As a further preferable mode, the second fitting portion is provided at a large end of the lens locking sleeve.
As a further preferable mode, the large end of the elastic locking member is provided with a notch, and the limiting hole is one or more notches of the large end of the elastic locking member.
As a further preference, the indentation is adapted to narrow when pushed against, so that the resilient locking member provides the holding force.
As a further preferred aspect, the lens locking and detaching method further includes:
s3, adjusting the lens locking sleeve to enable the lens locking sleeve to move towards the unlocking direction so as to loosen the pushing of the elastic locking piece;
and S4, adjusting the lens assembly to enable the lens assembly to move relative to the lens barrel mounting seat.
Generally, compared with the prior art, the technical scheme of the invention has the advantages that the lens assembly is convenient to replace and the focusing process of the lens is simplified, so that the following beneficial effects can be achieved.
1. The second matching part of the lens locking sleeve is movably connected to the first matching part of the lens cone mounting seat, the lens locking sleeve is sleeved outside the elastic locking piece, and the lens locking sleeve can push the elastic locking piece to enable the elastic locking piece to provide a holding force, so that the effect of fixing the lens can be achieved;
2. the lens cone mounting seat and the elastic locking piece are connected through the first positioning structure and the second positioning structure, and the elastic locking piece can be connected to the lens cone mounting seat; the first positioning structure can comprise a first boss wall, and the second positioning structure comprises a second boss wall sleeved outside the first boss wall, so that the elastic locking piece is fixed to the lens cone mounting seat; the first positioning structure can further comprise a limiting nail, the second positioning structure comprises a limiting hole, the limiting nail extends into the limiting hole, and the elastic locking piece can be further fixed on the lens cone mounting seat, so that when the lens locking sleeve is adjusted to enable the lens locking sleeve to push the elastic locking piece, the second positioning structure of the elastic locking piece can be ensured to be fixed, the second positioning structure cannot move along with the movement of the lens locking sleeve, and the imaging quality of the lens cone mounting seat can be ensured;
3. the lens locking sleeve and the elastic locking piece can be both in a truncated cone shape, the second positioning structure is arranged at the large end of the elastic locking piece, and a notch is arranged at the large end and/or the small end of the elastic locking piece and can enable the elastic locking piece to deform when being pushed so as to enable the elastic locking piece to provide the holding force; the lens locking sleeve is sleeved outside the elastic locking piece, the aim of pushing the elastic locking piece can be achieved by moving the lens locking sleeve towards the direction of the lens cone mounting seat, and the aim of pushing the elastic locking piece can also be achieved by directly contracting towards the direction of the elastic locking piece, so that the lens locking process is simple, convenient and quick, and the lens locking time is saved;
4. the lens assembly is connected to the lens cone mounting seat through the third matching part and the fourth matching part, and the elastic locking piece is sleeved outside the lens assembly, so that the lens assembly can be held tightly after focusing is finished;
5. the lens barrel comprises a lens barrel mounting seat, a lens barrel mounting seat is arranged on the lens barrel mounting seat, a third matching part is arranged on the lens barrel mounting seat, and a sealing ring is arranged between the third matching part and the fourth matching part of the lens barrel mounting seat.
Drawings
FIG. 1 is a structural diagram of a lens locking and detaching mechanism according to an embodiment of the present invention;
FIG. 2 is a completed installation view of the lens locking and detaching mechanism according to the embodiment of the present invention;
fig. 3 is a sectional view showing the lens lock attaching and detaching mechanism of the embodiment of the present invention completed in mounting.
The same reference numbers will be used throughout the drawings to refer to the same or like elements or structures, wherein:
1-lens cone mounting base;
2-an elastic locking member;
3-lens locking sleeve;
4-a limit nail;
5-lens assembly.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention provides a lens locking and dismounting mechanism, which comprises a lens cone mounting seat 1 provided with a first matching part, an elastic locking part 2 and a lens locking sleeve 3 sleeved outside the elastic locking part 2, wherein the lens locking sleeve 3 is provided with a second matching part, the second matching part is movably connected with the first matching part so that the lens locking sleeve 3 can move along a locking direction and an unlocking direction, and the lens locking sleeve 3 can push the elastic locking part 2 when moving along the locking direction so that the elastic locking part 2 provides a holding force. The locking direction is a direction which can enable the lens locking sleeve 3 to push against the elastic locking piece 2, and the unlocking direction is a direction which can enable the lens locking sleeve 3 to relax and push against the elastic locking piece 2; or the locking direction is the direction for making the elastic locking piece 2 hold the lens tightly, and the unlocking direction is the direction for making the elastic locking piece 2 release the lens. First cooperation portion swing joint second cooperation portion is for making lens locking sleeve 3 can support and push elastic locking piece 2 so that elastic locking piece 2 can hold the camera lens tightly to reach the purpose that the fixed lens is motionless, first cooperation portion swing joint second cooperation portion also can make lens locking sleeve 3 can relax right elastic locking piece 2 support and push away, thereby reach the purpose of relaxing the camera lens, can conveniently refocus or change the camera lens to the camera lens, and this kind of design makes fixed camera lens or change the camera lens or the process of refocusing to the camera lens is simple easy to learn and quick, and because elastic locking piece 2 is elastic material, so can not cause the damage to the camera lens in fixed camera lens.
Lens cone mount pad 1 is equipped with first location structure, elastic locking member 2 is equipped with second location structure, second location structure connects first location structure, thereby makes elastic locking member 2 can be connected to on the lens cone mount pad 1, and can not lead to fixed camera lens process to go wrong because of the random motion of elastic locking member 2 to the camera lens of focus has been adjusted to the influence, thereby influences the imaging effect.
The first positioning structure comprises a first boss wall, and the second positioning structure comprises a second boss wall sleeved outside the first boss wall. The design of boss wall makes elastic locking piece 2 can be fixed to on the lens cone mount pad 1 to reduce the influence of fixed camera lens in-process elastic locking piece 2 to the camera lens, can guarantee the formation of image effect of lens cone mount pad 1.
As shown in fig. 1, the first positioning structure may further include a limit pin 4, the second positioning structure includes a limit hole, and the limit pin 4 extends into the limit hole, so that the elastic locking member 2 is fixed to the lens barrel mounting base 1, thereby preventing the focal length of the lens from being affected during the process of fixing the lens, and ensuring the imaging effect.
The first positioning structure of the invention can only comprise a first boss wall, and the second positioning structure only comprises a second boss wall sleeved outside the first boss wall, so as to achieve the purpose of fixing the elastic locking member 2 to the lens cone mounting seat 1; the first positioning structure of the invention can also only comprise a limit nail 4, the second positioning structure comprises a limit hole, and the limit nail 4 extends into the limit hole so as to achieve the purpose of fixing the elastic locking piece 2 to the lens cone mounting seat 1; the first positioning structure can simultaneously comprise a first boss wall and a limiting nail 4, and the second positioning structure simultaneously comprises a second boss wall and a limiting hole, so that the elastic locking piece 2 can be further fixed on the lens cone mounting seat 1, the influence on a lens is reduced to a greater extent in the process of fixing the lens, and a high-quality imaging effect is obtained.
The number of the limit nails 4 is two or more, preferably two, so that the function of fixing the elastic locking piece 2 can be achieved.
The limiting nail 4 can be directly integrated with the lens cone mounting seat 1, and can also be fixed to the lens cone mounting seat 1 in other modes, so that the limiting nail 4 and the lens cone mounting seat 1 are considered as a whole, the other modes can be an embedding mode, namely, the limiting nail 4 is embedded into the lens cone mounting seat 1, and the other modes can also be a spiral mode, namely, the lens cone mounting seat 1 is provided with a threaded hole, so that the limiting nail 4 can be fixed to the lens cone mounting seat 1 through the threaded hole.
The elastic locking piece 2 can be a cylindrical structure formed by a plurality of strip-shaped materials, and the second positioning structure is arranged at one end of the cylindrical structure; lens locking collar 3 is established for the cover the outside tubular structure of elastic locking piece 2, just lens locking collar 3 is followed can support when locking direction removes and push elastic locking piece 2 is in order to provide holding power. Locking direction includes camera lens lock sleeve 3 is to being close to the direction that elastic locking piece 2 removed, promptly camera lens lock sleeve 3 can inwards contract in order to support and push elastic locking piece 2 is in order to provide holding power, and is corresponding, the unblock direction includes camera lens lock sleeve 3 is to keeping away from the direction that elastic locking piece 2 removed, promptly camera lens lock sleeve 3 can outwards expand in order to relax right elastic locking piece 2 supports and pushes away.
The notch arranged on the big end of the elastic locking piece 2 can be used as a limiting hole.
As shown in fig. 1, the lens locking and detaching mechanism of the present invention further includes a lens assembly 5 having a third mating portion, the lens barrel mounting base 1 has a fourth mating portion mating with the third mating portion, and the elastic locking member 2 is sleeved outside the third mating portion of the lens assembly 5. The third matching part and the fourth matching part may be matched thread structures, that is, the lens assembly 5 may be connected to the lens barrel mounting base 1 in a spiral manner to facilitate focusing of the lens assembly 5.
The holding force is the force of the elastic locking piece for locking the lens assembly, namely the holding force is the force of the elastic locking piece for fixing the lens assembly.
The lens locking and dismounting mechanism further comprises a sealing ring arranged on the fourth matching part, and the sealing ring is used for filling a gap between the third matching part of the lens component 5 and the fourth matching part of the lens cone mounting seat 1. The sealing ring can be an O-shaped sealing ring.
Correspondingly, the invention also provides a lens locking and dismounting method, which comprises the following steps:
s1, obtaining a lens barrel mounting base 1 provided with a first matching part, an elastic locking part 2 and a lens locking sleeve 3 provided with a second matching part, movably connecting the second matching part to the first matching part, and enabling the lens locking sleeve 3 to be sleeved outside the elastic locking part, wherein the lens locking sleeve 3 can move along a locking direction and an unlocking direction;
s2, adjusting the lens locking sleeve 3 to enable the lens locking sleeve 3 to move along the locking direction to push the elastic locking piece 2, so that the elastic locking piece 2 provides a holding force.
In the step S1, the barrel mount 1 may include a first positioning structure, and the elastic locker 2 may include a second positioning structure, so the step S1 may further include connecting the first positioning structure with the second positioning structure.
In step S1, the first positioning structure may include a position-limiting pin 4, the corresponding second positioning structure includes a position-limiting hole, and the position-limiting pin 4 and the lens barrel mounting base 1 may be directly integrated or the position-limiting pin 4 may be connected to the lens barrel mounting base 1 so as to integrate the position-limiting pin 4 and the lens barrel mounting base 1, so in step S1, the method may further include extending the position-limiting pin 4 into the position-limiting hole to fix the elastic locking member 2 to the lens barrel mounting base 1.
In the step S1, the first positioning structure may include a first boss wall, and the corresponding second positioning structure includes a second boss wall, so in the step S1, the method may further include sleeving the second boss wall on the first boss wall to connect the elastic locking member 2 to the lens barrel mounting base 1.
The elastic locking piece 2 can be a cylindrical structure formed by a plurality of strip-shaped materials, the second positioning structure is arranged at one end of the cylindrical structure, and the lens locking sleeve 3 can push the elastic locking piece 2 so that the elastic locking piece 2 provides a holding force; lens locking cover 3 is established for the cover the outside tubular structure of elastic locking piece 2, just thereby lens locking cover 3 can inwards contract and can support and push elastic locking piece 2 is in order to provide the holding power. Therefore, the step S2 includes adjusting the lens locking sleeve 3 to contract inward, and the lens locking sleeve 3 pushes against the elastic locking member 2 to make the elastic locking member 2 provide a holding force.
Lens barrel locking cover 3 with elastic locking piece 2 is the round platform form, lens cone mount pad 1 is equipped with first location structure, elastic locking piece 2 is equipped with second location structure, second location structure connects first location structure, second location structure set up in elastic locking piece 2's main aspects, elastic locking piece 2's main aspects and/or tip are provided with the breach, the breach can make elastic locking piece 2's tip receives to take place to warp when pushing away, so that elastic locking piece 2 provides fixing power. Therefore, the step S2 includes that the lens locking sleeve 3 contracts inward to push against the elastic locking member 2 to narrow the notch of the elastic locking member 2 to provide a holding force or the lens locking sleeve 3 moves toward the direction close to the lens barrel mounting base 1 to push the small end of the lens locking sleeve 3 against the elastic locking member 2 to narrow the notch of the elastic locking member 2 to provide a holding force.
The first mating portion and the second mating portion may be threaded structures, and correspondingly, the step S1 may include screwing the lens lock sleeve 3 into the lens barrel mounting base 1, but not completely screwing, that is, not screwing to a limit of the threads; correspondingly, the step S2 may include that the lens locking sleeve 3 is screwed into the lens barrel mounting base 1 in a direction close to the lens barrel mounting base 1 to push the elastic locking member 2 so that the elastic locking member 2 provides a holding force.
Between the S1 and S2, further comprising:
obtaining a lens assembly 5 provided with a third matching part, wherein the lens barrel mounting base 1 is provided with a fourth matching part matched with the third matching part, and the third matching part of the lens assembly 5 is connected to the fourth matching part of the lens barrel mounting base 1, so that the elastic locking part 2 is sleeved outside the third matching part of the lens assembly 5 and focuses on the lens assembly 5.
The third mating portion and the fourth mating portion may also be in a threaded structure, that is, between S1 and S2, obtaining a lens assembly 5 with a third mating portion may be included, the lens barrel mount 1 is provided with a fourth mating portion that is mated with the third mating portion, the lens assembly 5 is screwed into the lens barrel mount 1, and the lens assembly 5 is focused.
The step S2 specifically includes:
adjust lens lock sleeve 3 makes lens lock sleeve 3 follow locking direction removes, lens lock sleeve 3 supports to push elastic locking piece 2 makes elastic locking piece 2 take place to warp in order to provide the holding power to it is fixed lens subassembly 5.
The lens lock mounting and dismounting mechanism in the embodiment of the present invention is shown in a mounted state and in a mounted state in a sectional view in fig. 2 and 3.
The lens locking and dismounting method further comprises the following steps:
s3, adjusting the lens locking sleeve 3 to enable the lens locking sleeve 3 to move towards the unlocking direction, so as to loosen the pushing of the elastic locking piece 2;
s4, adjusting the lens assembly 5 to move the lens assembly 5 relative to the lens barrel mount 1.
The invention is suitable for manual installation occasions which need to replace the lens, adjust the focusing of the lens and have simple operation without tools.
In a specific embodiment of the present invention, the lens barrel mounting base 1 belongs to an imaging mechanism, and is a mounting base with a first internal thread and a fourth external thread, where the mounting base is capable of being assembled with a lens assembly 5, the first internal thread is the first matching portion, and the fourth external thread is the fourth matching portion, the lens barrel mounting base 1 further includes a first positioning structure, and the first positioning structure includes a limit pin 4, in this specific embodiment, the limit pin 4 is connected to the lens barrel mounting base 1 in a spiral manner, and the limit pin 4 and the lens barrel mounting base 1 are regarded as a whole, and the first positioning structure further includes a first boss wall.
Elastic locking member 2 is that a periphery is complete to have the breach for table surface and its front and back end edge, can take place elastic deformation's thin-walled structure spare after the atress, does not restrict its concrete material, require can elastic deformation, elastic locking member 2 still includes the second location structure who matches with first location structure, just second location structure still include with spacing hole that stop pin 4 matches and connects, spacing hole is two or more in the breach, second location structure still include with the second boss wall that first boss matches mutually.
The lens assembly 5 is composed of a main lens barrel with a third internal thread matched with the fourth external thread, an internal lens and the like, namely the third internal thread is the third matching part and is a replaceable assembly needing focusing adjustment.
The specific working principle is as follows:
installing two limit nails 4 on a lens cone installation seat 1, wherein the lens cone installation seat 1 is provided with threaded holes corresponding to the limit nails 4, the limit nails 4 can be screwed on the lens cone installation seat 1 by hand, and then the limit nails 4 and the lens cone installation seat 1 are regarded as a whole; the elastic locking piece 2 is sleeved on the limit nail 4, the elastic locking piece 2 is in a circular truncated cone shape, a gap at the large end of the elastic locking piece can be sleeved on the limit nail 4, and the second boss wall is sleeved outside the first boss wall of the lens cone mounting seat 1; the lens locking sleeve 3 is arranged on the lens cone mounting seat 1, a second external thread on the inner surface of one end of the lens locking sleeve 3 is matched with a first internal thread of the lens cone mounting seat 1, and the other part of the inner surface of the lens locking sleeve 3 is an inner circular table surface which is matched with an outer circular table surface of the elastic locking piece 2, and the taper is consistent; when the lens locking sleeve 3 is screwed into the lens cone mounting seat 1, only 1 to 2 circles of threads need to be screwed, and the lens locking sleeve does not need to be screwed to a limiting position forcibly; the lens assembly 5 is arranged in the lens cone mounting seat 1, the outer wall of the main lens cone is held by a hand, the lens cone mounting seat 1 is screwed in, an O-shaped sealing ring is arranged below the lens assembly 5 and used for sealing the lens cone mounting seat 1, and the resistance of the lens during focusing is properly increased; rotating the lens assembly 5, and focusing to a proper position to stop; rotating the lens locking sleeve 3 towards the direction close to the lens cone mounting seat 1 to screw the lens locking sleeve 3, wherein the inner circular table surface of the lens locking sleeve 3 can push the outer circular table surface of the elastic locking part 2, but because the large end of the elastic locking part 2 is limited by the lens cone mounting seat 1 and the elastic locking part 2 is provided with a notch, the inner wall of the elastic locking part 2 can deform and contract and the elastic locking part 2 can not rotate, so that the elastic locking part 2 can tightly hold the lens component 5, thereby limiting the movement of the lens component 5 and realizing the locking of the lens component 5; on the contrary, if the lens assembly 5 needs to be unscrewed or replaced, only the lens locking sleeve 3 needs to be loosened, so that the elastic locking member 2 is not deformed by force any more, a gap is generated between the elastic locking member 2 and the lens assembly 5, and the lens assembly 5 is unscrewed from the lens cone mounting base 1, so that the lens assembly 5 can be unscrewed or replaced.
The implementation mechanism and the installation method of the replaceable lens and easy focusing and locking can conveniently replace, focus and lock the lens, improve the operation efficiency, avoid the thread clearance between the traditional locking nut and the lens component 5, avoid the deviation of the optical axis direction of the lens component 5, reduce the influence of the locking mechanism on the focusing result of the lens component 5, realize full-manual focusing, and do not need tools.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A lens locking and dismounting mechanism is characterized by comprising a lens cone mounting seat, an elastic locking piece and a lens locking sleeve, wherein the lens cone mounting seat is provided with a first matching part, the lens locking sleeve is sleeved outside the elastic locking piece, the lens locking sleeve is provided with a second matching part, the second matching part is movably connected with the first matching part so that the lens locking sleeve can move along a locking direction and an unlocking direction, and the lens locking sleeve can support and push the elastic locking piece when moving along the locking direction so that the elastic locking piece provides a fixing force; the lens cone mount pad is equipped with first location structure, the elasticity retaining member is equipped with second location structure, first location structure includes the spacing nail, second location structure includes spacing hole, the spacing nail extends into spacing hole, so that the elasticity retaining member is fixed in the lens cone mount pad.
2. The lens locking and disassembling mechanism of claim 1, wherein the first positioning structure includes a first boss wall, and the second positioning structure includes a second boss wall fitted over the first boss wall.
3. The lens locking and dismounting mechanism according to claim 1, wherein the lens locking sleeve and the elastic locking member are both in the shape of a circular truncated cone, the second positioning structure is disposed at a large end of the elastic locking member, and a notch is disposed at a large end and/or a small end of the elastic locking member, so that the end of the elastic locking member deforms when pushed against the notch, and the elastic locking member provides the holding force.
4. The lens locking and detaching mechanism according to any one of claims 1 to 3, further comprising a lens assembly provided with a third fitting portion, wherein the lens barrel mounting base is provided with a fourth fitting portion fitted with the third fitting portion, and the elastic locking member is fitted over the third fitting portion of the lens assembly.
5. A lens locking and dismounting method is characterized by comprising the following steps:
s1, obtaining a lens cone mounting seat provided with a first matching part, an elastic locking part and a lens locking sleeve provided with a second matching part, movably connecting the second matching part to the first matching part, and enabling the lens locking sleeve to be sleeved outside the elastic locking part, wherein the lens locking sleeve can move along a locking direction and an unlocking direction; the lens cone mounting seat is provided with a first positioning structure, the elastic locking piece is provided with a second positioning structure, the second positioning structure is connected with the first positioning structure, the second positioning structure is arranged at the large end of the elastic locking piece, and the large end and/or the small end of the elastic locking piece are/is provided with notches;
s2, adjusting the lens locking sleeve to move along the locking direction to push the elastic locking piece, and the notch makes the end of the elastic locking piece deform when being pushed to provide the holding force.
6. The lens locking disassembly and assembly method of claim 5, further comprising, between the steps S1 and S2:
and obtaining a lens assembly provided with a third matching part, wherein the lens cone mounting seat is provided with a fourth matching part matched and connected with the third matching part, and the third matching part of the lens assembly is connected to the fourth matching part of the lens cone mounting seat, so that the elastic locking piece is sleeved outside the third matching part of the lens assembly and focuses the lens assembly.
7. The lens locking and disassembling method according to claim 6,
the lens lock sleeve and the elastic locking piece are both in a round table shape.
8. The lens locking and dismounting method according to claim 6 or 7, further comprising:
s3, adjusting the lens locking sleeve to enable the lens locking sleeve to move towards the unlocking direction so as to loosen the pushing of the elastic locking piece;
and S4, adjusting the lens assembly to enable the lens assembly to move relative to the lens barrel mounting seat.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711035866.6A CN107942467B (en) | 2017-10-30 | 2017-10-30 | Lens locking and dismounting mechanism and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711035866.6A CN107942467B (en) | 2017-10-30 | 2017-10-30 | Lens locking and dismounting mechanism and method |
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| Publication Number | Publication Date |
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| CN107942467A CN107942467A (en) | 2018-04-20 |
| CN107942467B true CN107942467B (en) | 2020-12-25 |
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| CN111258020B (en) * | 2020-01-14 | 2021-05-18 | 中国科学院长春光学精密机械与物理研究所 | Screw thread locking structure and focusing lens assembly |
| CN114967296A (en) * | 2022-04-22 | 2022-08-30 | 青岛虚拟现实研究院有限公司 | Projection lens, projection ray apparatus and virtual reality equipment |
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| JP6685747B2 (en) * | 2016-02-10 | 2020-04-22 | キヤノン株式会社 | Lens mount, interchangeable lens and imaging device |
| CN206226567U (en) * | 2016-11-01 | 2017-06-06 | 杭州海康威视数字技术股份有限公司 | A kind of video camera |
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