CN110967845A

CN110967845A - Shock attenuation anti-shake mechanism, camera lens subassembly and shooting equipment

Info

Publication number: CN110967845A
Application number: CN201911199201.8A
Authority: CN
Inventors: 郑鉴峰; 邱盛平; 吕祖文; 梁海清; 刘辉; 黄振锋
Original assignee: Union Optech Co Ltd
Current assignee: Union Optech Co Ltd
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-04-07

Abstract

The invention discloses a shock-absorbing anti-shake mechanism, a lens assembly and shooting equipment, wherein the shock-absorbing anti-shake mechanism comprises: go up the fixing base, fixing base down, elastic component, moving member and ball, it is equipped with a fixed cover to go up fixing base and moving member one of them, another is equipped with the ball piece, be equipped with the passageway that holds the ball in the fixed cover, the ball part stretches out in holding the passageway and contact with ball piece point, the elastic component includes the last installation department that links to each other with the moving member, lower installation department and the rubber connecting portion that link to each other with lower fixing base, installation department and last installation department elastic deformation are in order to drive the moving member motion that resets relatively down to the. The balls roll on the ball pieces and can only rotate in the accommodating channel, so that the balls are prevented from freely hitting the wall, and only the mounting precision of one ball piece is required to be guaranteed; the rubber connecting part has the effect of buffering and damping for the reset movement of the moving part, and the stability of the lens output picture is guaranteed. The lens component and the shooting equipment both comprise the shock-absorbing anti-shaking mechanism.

Description

Shock attenuation anti-shake mechanism, camera lens subassembly and shooting equipment

Technical Field

The invention relates to the technical field of photographic equipment, in particular to a damping and anti-shake mechanism, a lens assembly and shooting equipment.

Background

With the improvement of the high-definition technology in the market, people have higher and higher requirements on the definition of a shot picture, and the problem of camera lens shake prevention needs to be solved by improving the definition of the picture. At present, the anti-shake mechanism for the mainstream of the lens is a ball type anti-shake mechanism, as shown in fig. 1, the current anti-shake mechanism includes an upper fixing seat 1 ', a lower fixing seat 2', a moving member 4 ', a spring 3', a ball 5 'and two ball sheets 7', the lower fixing seat 2 'is movably connected with the moving member 4' through the spring 3 ', the upper end surface of the moving member 4' is provided with one ball sheet 7 ', the lower end surface of the upper fixing seat 1' is provided with a sinking groove 11 ', the sinking groove 11' is provided with another ball sheet 7 ', and the ball 5' is movably abutted between the two ball sheets 7 'and can only move in the sinking groove 11'.

When the shooting equipment takes place the shake phenomenon when shooing, shooting equipment can order about moving member relative motion according to the vector of shake in order to compensate the influence that this shake caused to the camera lens, and then the definition of guarantee shooting picture, and at this in-process, above-mentioned anti-shake mechanism can stabilize the motion of moving member to a certain extent, ensures the motion accuracy of moving member.

However, in the process of relative movement of the moving member, the balls freely move in the sinking groove and easily collide with the inner wall of the sinking groove to generate vibration, which affects the stability of the anti-shake mechanism. And the ball contacts with different positions of the ball sheet to have the difference of fit size, so that the requirement on the overall flatness precision of the ball sheet is very high, and the production cost is improved.

The main motion of moving member is the swing on the plane, and its wobbling direction is on a parallel with two ball pieces, need to ensure the plane degree of ball piece when making ball piece, still need to ensure the depth of parallelism between two ball pieces when the installation, and the precision requirement to manufacturing is very high, leads to manufacturing cost, product defective rate all to improve. Moreover, when the moving part swings, the spring is radially deformed correspondingly, the spring is formed by spirally winding a rigid material, the spring can cross the axis of the moving part when moving in a restoring mode, the restoring force of the spring can interfere the normal work of the moving part, the fluctuation and the vibration of the moving part are caused, and the quality and the stability of a shot picture of the lens are influenced.

Secondly, the both ends of spring respectively with moving part and lower fixing base looks butt, the tip of spring can take place radial displacement of slight relatively moving part or lower fixing base, further influences the working effect of anti-shake mechanism, and then influences the stable picture of camera lens output.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a damping and anti-shaking mechanism which prevents balls from freely colliding with a wall and has a damping effect on moving parts; the other purpose is to provide a lens component with the damping and anti-shake mechanism; the third purpose is to provide a shooting device with the damping and anti-shake mechanism.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a shock absorbing anti-shake mechanism comprising: the ball bearing comprises an upper fixing seat, a lower fixing seat, an elastic part, a moving part and balls, wherein the moving part is movably connected to the lower fixing seat through the elastic part, the moving part is positioned between the upper fixing seat and the lower fixing seat, and the balls are movably arranged between the upper fixing seat and the moving part, the ball bearing is characterized in that one of the upper fixing seat and the moving part is provided with a fixing sleeve, the other one of the upper fixing seat and the moving part is provided with a ball sheet opposite to the fixing sleeve, a containing channel for containing the balls and allowing the balls to rotate relative to the fixing sleeve is arranged in the fixing sleeve, the ball part extends out of the containing channel and is in point contact with the ball sheet, the elastic part comprises an upper mounting part, a lower mounting part and a rubber connecting part, the lower mounting part is connected with the lower fixing, and the rubber connecting part can be opposite to the lower mounting part and the upper mounting part, and the rubber connecting part elastically deforms to drive the moving part to reset.

In some embodiments of the present invention, it is preferable that the fixing sleeve includes a pipe member and a planar member for closing an upper end of the internal passage of the pipe member, a lower end of the internal passage of the pipe member has a throat portion to form the receiving passage, and a side of the ball remote from the throat portion is in contact with an inner surface of the planar member. This hold structure of passageway easily produces the manufacturing, and during the installation ball, only need put into the ball from the top of the inside passage of pipe fitting, then install the plane spare on the pipe fitting and seal the upper end of the inside passage of pipe fitting, and then spacing the ball within holding the passageway. In other embodiments, the receiving channel may instead be a hemispherical shape adapted to the ball, and a through hole is opened below the hemispherical receiving channel for the ball to partially protrude.

As a preferred embodiment of the present invention, the plane member is detachably mounted on the upper end surface of the pipe member, thereby facilitating the mounting and dismounting of the balls, and the balls can be replaced by the dismounting structure when the balls are worn.

Further, in some embodiments of the present invention, the pipe is provided with an insertion groove located above the internal channel of the pipe, the planar member is slidably inserted into the insertion groove to close one side of the internal channel of the pipe, which is far away from the necking portion, and then the fixing sleeve is fixedly connected to the upper fixing seat or the moving member to fix the planar member relative to the pipe, so that a process of fixedly connecting the planar member to the pipe is not required to be added, and the assembly efficiency of the product is improved.

As a preferred embodiment of the invention, a flange disc is annularly arranged on the outer edge of the upper end face of the fixing sleeve, a profiling sunken groove matched with the flange disc is formed in the lower end face of the upper fixing seat, the flange disc and the profiling sunken groove are fixed by glue, the fixing sleeve can be quickly positioned by matching of the flange disc and the profiling sunken groove, and the fixing sleeve is conveniently mounted by the glue.

As a preferred embodiment of the invention, the upper mounting part, the lower mounting part and the rubber connecting part are integrally formed by flexible rubber, so that a plurality of parts do not need to be manufactured for assembly, the processing and production cost of the elastic piece is reduced, the structural stability of the elastic piece is ensured, and the service life of the elastic piece is ensured.

In some embodiments of the present invention, the upper mounting portion is a first rubber sleeve with an upward opening, the lower part of the moving piece is provided with a first inserting part which can be inserted into the first rubber sleeve and is tightly matched with the first rubber sleeve, the lower mounting part is a second rubber sleeve with a downward opening, the lower fixing seat is provided with a second inserting part which can be inserted into the second rubber sleeve upwards and is tightly matched with the second rubber sleeve, the rubber connecting part and the first rubber sleeve and the second rubber sleeve which are positioned at the two ends of the rubber connecting part form an I-shaped structure together, when the moving part moves relative to the lower fixed seat, the rubber connecting portion in this I-shaped structure can swing freely according to the direction of motion of moving member, goes up the compound mode of installation department and moving member tight fit, lower installation department and lower fixing base tight fit moreover and can ensure that the elastic component can not relative moving member or the lower fixing base takes place the drunkenness, further improves the job stabilization nature of shock attenuation anti-shake mechanism.

In some embodiments of the present invention, the first rubber sleeve is provided with a plurality of strip ribs extending upward and distributed circumferentially, and the plurality of strip ribs jointly enclose a circular fence structure for sleeving and fixing the first rubber sleeve outside the first insertion portion, and the circular fence structure can prevent the movement of the moving member from being affected by an excessive stress at a local position of the first rubber sleeve, improve the degree of freedom of the damping and anti-shake mechanism, and more easily adapt to fluctuations caused under different working conditions.

The invention also discloses a lens assembly which comprises the shock-absorbing and anti-shaking mechanism in any technical scheme.

The invention also discloses shooting equipment which comprises the lens component.

The advantages of the lens assembly and the shooting device in comparison with the prior art are the same as those of the shock-absorbing and anti-shake mechanism in the invention in comparison with the prior art, and are not described herein again.

Has the advantages that: the damping and anti-shaking mechanism with the structure replaces the original one ball sheet by the fixed sleeve, and in the process that the moving part moves relative to the upper fixed seat, the ball rolls on the ball sheet and only can rotate in the accommodating channel, so that the ball is prevented from freely colliding with the wall, the working stability of the damping and anti-shaking mechanism is ensured, and in the assembling process, only the installation precision of one ball sheet is required to be ensured; the elastic part with the rubber connecting part is utilized to replace a traditional spring, the rubber connecting part has the effect of buffering and damping on the reset movement of the moving part, the normal movement of the moving part is prevented from being interfered, the accuracy of the damping and anti-shaking mechanism is ensured, and the stability of a lens output picture is further ensured.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic diagram of the internal structure of a prior art anti-shake mechanism;

FIG. 2 is a schematic view of the shock absorbing anti-shake mechanism of the present invention;

FIG. 3 is a schematic view of the internal structure of the shock absorbing anti-shake mechanism of FIG. 2;

FIG. 4 is an exploded schematic view of the shock absorbing anti-shake mechanism of FIG. 2;

FIG. 5 is a schematic view of the ball-bearing retainer sleeve separated from the upper retainer;

fig. 6 is a schematic structural view of the elastic member of fig. 4.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Referring to fig. 2, 3 and 4, the shock-absorbing and anti-shake mechanism of the present invention includes: the upper fixing seat 1, the lower fixing seat 2, the elastic component 3, the moving component 4 and the ball 5, wherein the moving component 4 is movably connected to the lower fixing seat 2 through the elastic component 3, the moving component 4 is positioned between the upper fixing seat 1 and the lower fixing seat 2, and the ball 5 is movably arranged between the upper fixing seat 1 and the moving component 4, the device is characterized in that one of the upper fixing seat 1 and the moving component 4 is provided with a fixing sleeve 6, the other one is provided with a ball sheet 7 opposite to the fixing sleeve 6, the fixing sleeve 6 is internally provided with a containing channel for containing the ball 5 and allowing the ball 5 to rotate relative to the fixing sleeve, the ball 5 partially extends out of the containing channel to be in point contact with the ball sheet 7, the elastic component 3 comprises an upper mounting part 31, a lower mounting part 33 and a rubber connecting part 32, the lower mounting part 33 is connected with the lower fixing seat 2, and, the rubber connecting part 32 is connected between the upper mounting part 31 and the lower mounting part 33, and the rubber connecting part 32 can be opposite to the lower mounting part 33 and the upper mounting part 31 which are elastically deformed to drive the moving part 4 to move.

The damping and anti-shaking mechanism with the structure replaces the original ball sheet 7 by the fixed sleeve 6, and in the process that the moving member 4 moves relative to the upper fixed seat 1, the ball 5 rolls on the ball sheet 7 and the ball 5 can only rotate in the accommodating channel, so that the ball 5 is prevented from freely colliding with the wall, the working stability of the damping and anti-shaking mechanism is ensured, and in the assembling process, the mounting precision of one ball sheet 7 is only required to be ensured; the elastic component 3 with the rubber connecting portion 32 replaces a traditional spring, the rubber connecting portion 32 has a buffering and damping effect on the reset movement of the moving component 4, the normal movement of the moving component 4 is prevented from being interfered, the accuracy of the damping and anti-shaking mechanism is ensured, and the stability of a lens output picture is guaranteed.

Referring to fig. 3 and 4, in some embodiments of the present invention, preferably, the fixing sleeve 6 includes a pipe 61 and a plane member 62, the plane member 62 is used for closing the upper end of the internal passage of the pipe 61, the lower end of the internal passage of the pipe 61 has a throat portion 611 to form the receiving passage, and the side of the ball 5 away from the throat portion 611 contacts with the inner surface of the plane member 62. In order to ensure the durability and stability of the fixing sleeve 6, the tube 61 and the flat member 62 are made of metal to ensure that the flat member 62 is not easily worn by the ball 5 rotating relative to the receiving passage. This structure of holding passageway is easily produced and is made, and when installing ball 5, only need put into ball 5 from the top of the inside passage of pipe fitting 61, then install plane piece 62 on pipe fitting 61 and seal the upper end of the inside passage of pipe fitting 61, and then spacing ball 5 in holding the passageway. In other embodiments, the receiving channel may instead be a hemispherical shape adapted to the ball 5, and a through hole is opened below the hemispherical receiving channel for the ball 5 to partially protrude.

As a preferred embodiment of the present invention, the plane member 62 is detachably mounted on the upper end surface of the pipe member 61, thereby facilitating the mounting and dismounting of the balls 5, and the balls 5 can be replaced by the dismounting structure when the balls 5 are worn.

Referring to fig. 4, further, in some embodiments of the present invention, the tube 61 is provided with a recessed groove 612 above the inner channel thereof, the planar member 62 is slidably inserted into the recessed groove 612 to close a side of the inner channel of the tube 61 away from the necking portion 611, and then the fixing sleeve 6 is fixedly connected to the upper fixing base 1 or the moving member 4 to fix the planar member 62 relative to the tube 61, so that a process of fixedly connecting the planar member 62 to the tube 61 is not required to be added, and the assembly efficiency of the product is improved.

Referring to fig. 4 and 5, as a preferred embodiment of the present invention, a flange plate 613 is annularly disposed on an outer edge of an upper end surface of the fixing sleeve 6, a profiling sunken groove 11 matched with the flange plate 613 is disposed on a lower end surface of the upper fixing base 1, the flange plate 613 and the profiling sunken groove 11 are fixed by gluing, the fixing sleeve 6 can be quickly positioned by the matching of the flange plate 613 and the profiling sunken groove 11, and the fixing sleeve 6 is conveniently mounted by gluing.

Referring to fig. 5, it is further preferable that the upper fixing base 1 is provided with an overflow through hole 12 communicating with the profiling sink 11, when the flange plate 613 is fixed on the profiling sink 11 by glue, if the glue is excessive, the fixing sleeve 6 and the upper fixing base 1 are inclined relatively, which affects the working precision of the anti-shake mechanism, and the overflow through hole 12 can discharge the excessive glue therein, so as to ensure the installation precision of the fixing sleeve 6, and the glue in the overflow through hole 12 is still connected with the fixing sleeve 6 after being cured, which is helpful for the stability of the connection of the fixing sleeve 6.

Referring to fig. 3, preferably, the upper end surface of the moving member 4 is provided with an installation sunken groove 41 matched with the ball sheet 7, the ball sheet 7 is fixed in the installation sunken groove 41 by gluing, and the moving member 4 is provided with a liquid storage counterbore 42 communicated with the installation sunken groove 41. The ball sheet 7 can be quickly positioned by matching the installation sunken grooves 41 with the ball sheet 7, the ball sheet 7 can be conveniently installed by a glue fixing mode, and redundant glue can be discharged into the liquid storage counterbore 42 to ensure the installation accuracy of the ball sheet 7.

As a preferred embodiment of the present invention, the upper mounting portion 31, the lower mounting portion 33 and the rubber connecting portion 32 are integrally formed by flexible rubber, so that a plurality of parts do not need to be manufactured for assembly, the processing and production cost of the elastic member 3 is reduced, the structural stability of the elastic member 3 is ensured, and the service life of the elastic member 3 is ensured.

Referring to fig. 3, in some embodiments of the present invention, the upper mounting portion 31 is a first rubber sleeve with an upward opening, the lower portion of the moving member 4 is provided with a first inserting portion 43 that can be inserted into and tightly fitted with the first rubber sleeve, the lower mounting portion 33 is a second rubber sleeve with a downward opening, the lower fixing base 2 is provided with a second inserting portion 21 that can be inserted into and tightly fitted with the second rubber sleeve, the rubber connecting portion 32 and the first and second rubber sleeves at two ends thereof together form an i-shaped structure, when the moving member 4 moves relative to the lower fixing base 2, the rubber connecting portion 32 in the i-shaped structure can swing freely according to the moving direction of the moving member 4, and the combination manner that the upper mounting portion 31 is tightly fitted with the moving member 4 and the lower mounting portion 33 is tightly fitted with the lower fixing base 2 can ensure that the elastic member 3 does not move relative to the moving member 4 or the lower fixing base 2, further improve the job stabilization nature of shock attenuation anti-shake mechanism.

Referring to fig. 6, in some embodiments of the present invention, a plurality of strip ribs 311 extending upward and distributed circumferentially are disposed on the first rubber sleeve, and the plurality of strip ribs 311 jointly form a circular fence structure for being sleeved and fixed outside the first insertion portion 43, the circular fence structure can prevent the movement of the moving member 4 from being affected by an excessive stress at a local position of the first rubber sleeve, can improve the degree of freedom of the damping and anti-shake mechanism, and can more easily adapt to fluctuations caused under different working conditions.

As a preferred embodiment of the present invention, the thickness direction of the rib 311 points to the radial direction of the first rubber sleeve, the width direction of the rib 311 extends along the circumferential direction of the first rubber sleeve, and the thickness dimension of the rib 311 is greater than the width dimension of the rib 311, so that the rib 311 has sufficient mechanical strength to support the moving member 4, and the internal stress of the elastic member 3 can be reduced to ensure the movement precision of the moving member 4 during the movement process.

Referring to fig. 3, 4 and 6, in order to improve the installation efficiency, the first insertion portion 43 has a truncated cone surface 431 with a large top and a small bottom, the inner surface of the bar-shaped rib 311 is provided with a first tight-fitting inclined surface 312 matched with the truncated cone surface 431, and the first tight-fitting inclined surface 312 can be tightly attached to the truncated cone surface 431, so as to stably connect the moving member 4.

Referring to fig. 3, in order to ensure the stability of the second rubber sleeve mounted on the lower fixing base 2 and prevent the second rubber sleeve from easily separating from the lower fixing base 2, a tightening portion 22 is disposed on the lower fixing base 2 and around the second insertion portion 21, and the tightening portion 22 and the second insertion portion 21 can clamp the wall surface of the second rubber sleeve.

As a preferred embodiment of the invention, the length dimension of the rubber connecting part 32 is greater than 0.2mm, and the distance between the upper mounting part 31 and the lower mounting part 33 is greater than 0.2mm, so that the anti-shaking structure can be effectively prevented from being out of work due to interference between the upper mounting part 31 and the lower mounting part 33 when the rubber connecting part 32 is bent and deformed.

In the above description, the description of the orientation is referred to, and the orientation or the positional relationship indicated by, for example, upper and lower, etc. is based on the orientation or the positional relationship shown in the drawings, and is only for convenience of describing the present invention and simplifying the description, and thus, it is not to be construed as limiting the present invention.

The above examples are merely preferred embodiments of the present invention, and other embodiments of the present invention are possible, such as a reasonable combination of the technical solutions described in the examples. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope set forth in the claims of the present application.

Claims

1. A shock absorbing anti-shake mechanism comprising: the device comprises an upper fixed seat (1), a lower fixed seat (2), an elastic part (3), a moving part (4) and balls (5), wherein the moving part (4) is movably connected to the lower fixed seat (2) through the elastic part (3), the moving part (4) is positioned between the upper fixed seat (1) and the lower fixed seat (2), and the balls (5) are movably arranged between the upper fixed seat (1) and the moving part (4), and is characterized in that one of the upper fixed seat (1) and the moving part (4) is provided with a fixed sleeve (6), the other one of the upper fixed seat (1) and the moving part (4) is provided with a ball sheet (7) opposite to the fixed sleeve (6), a containing channel for containing the balls (5) and allowing the balls (5) to rotate relative to the fixed sleeve is arranged in the fixed sleeve (6), and part of the balls (5) extends out of the containing channel and is in, elastic component (3) are including last installation department (31), lower installation department (33) and rubber connecting portion (32), installation department (33) links to each other with lower fixing base (2) down, goes up installation department (31) and links to each other with moving member (4), rubber connecting portion (32) connect in go up between installation department (31) and lower installation department (33), and rubber connecting portion (32) can be relative installation department (33) and last installation department (31) elastic deformation are in order to drive moving member (4) motion that resets.

2. The shock absorbing and anti-shake mechanism according to claim 1, wherein:

the fixing sleeve (6) comprises a pipe (61) and a plane (62), the plane (62) is used for closing the upper end of the internal channel of the pipe (61), the lower end of the internal channel of the pipe (61) is provided with a necking part (611) to form the accommodating channel, and one side of the ball (5) far away from the necking part (611) is contacted with the inner surface of the plane (62).

3. The shock-absorbing and anti-shake mechanism according to claim 2, wherein:

the plane piece (62) is detachably arranged on the upper end face of the pipe piece (61).

4. A shock absorbing anti-shake mechanism according to claim 3, wherein:

the pipe fitting (61) is provided with a caulking groove (612) positioned above the inner channel of the pipe fitting, and the plane member (62) can be embedded in the caulking groove (612) in a sliding mode to close one side, far away from the necking part (611), of the inner channel of the pipe fitting (61).

5. The shock absorbing and anti-shake mechanism according to claim 1, wherein:

the outer edge ring of the upper end surface of the fixed sleeve (6) is provided with a flange disc (613), the lower end surface of the upper fixed seat (1) is provided with a profile modeling sink groove (11) matched with the flange disc (613), and the flange disc (613) and the profile modeling sink groove (11) are fixed through glue.

6. The shock absorbing and anti-shake mechanism according to claim 1, wherein:

the upper mounting part (31), the lower mounting part (33) and the rubber connecting part (32) are integrally formed by flexible rubber.

7. The shock absorbing and anti-shake mechanism according to claim 6, wherein:

go up installation department (31) and be the ascending first rubber sleeve of an opening, the lower part of moving member (4) is equipped with and inserts in the first rubber sleeve and with first rubber sleeve tight fit first portion of inserting (43), installation department (33) are the decurrent second rubber sleeve of an opening down, lower fixing base (2) are equipped with and insert in the second rubber sleeve and with second rubber sleeve tight fit second portion of inserting (21) upwards, rubber connecting portion (32) constitute the I-shaped structure jointly with the first rubber sleeve and the second rubber sleeve that are located its both ends.

8. The shock absorbing and anti-shake mechanism according to claim 7, wherein:

the first rubber sleeve is provided with a plurality of strip-shaped ribs (311) which extend upwards and are distributed circumferentially, and the strip-shaped ribs (311) jointly enclose a circular fence structure which is used for being sleeved and fixed on the outer portion of the first insertion portion (43).

9. A lens assembly comprising a shock absorbing anti-shake mechanism according to any of claims 1 to 8.

10. A photographing apparatus characterized by comprising a lens assembly according to claim 9.