CN114236945A

CN114236945A - Optical machine

Info

Publication number: CN114236945A
Application number: CN202111277257.8A
Authority: CN
Inventors: 曹国勇; 李敬
Original assignee: Goertek Optical Technology Co Ltd
Current assignee: Goertek Optical Technology Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-25

Abstract

The invention belongs to the technical field of optical machines, and particularly relates to an optical machine which comprises a lens barrel, a driving part, a transmission part, a lens and a pressing plate, wherein the driving part is connected to the lens barrel, the transmission part is in transmission fit with the driving part, the lens is rotatably connected into the lens barrel, the transmission part is slidably connected to the lens barrel and is in limit fit with the lens, the driving part is arranged for driving the transmission part to enable the lens to rotate relative to the lens barrel, the pressing plate is connected with the lens barrel and is pressed on the transmission part, and the pressing plate and the transmission part are in point contact. According to the optical machine provided by the embodiment of the invention, the contact between the pressing plate and the transmission part is set to be point contact, and the point contact is used for replacing surface contact, so that the contact area is reduced to a great extent, the friction force when the transmission part slides relative to the lens barrel is reduced, namely the resistance of the transmission of the driving force between the driving part and the transmission part is reduced, the minimum resistance of the driving part is ensured, the driving part is prevented from being blocked or dead, and the reliability and the quality of the optical machine are improved.

Description

Optical machine

Technical Field

The invention belongs to the technical field of optical machines, and particularly relates to an optical machine.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

The optical machine in the prior art realizes the adjustment of focal length through the rotation of motor, rack and pinion drive camera lens, finally makes the picture clear, and the rack presses through the clamp plate and realizes fixing on it, and can relative movement between rack and the clamp plate, consequently, requires the cooperation size precision between every part high, otherwise hardly guarantees moving smooth and easy, causes the motor card to pause or the dead problem of card.

Disclosure of Invention

The invention aims to at least solve the problem that the motor of the optical machine is blocked or dead in the prior art. The purpose is realized by the following technical scheme:

the invention provides an optical machine, comprising:

a lens barrel;

a driving member connected to the lens barrel;

the transmission piece is in transmission fit with the driving piece;

the driving part is arranged to drive the driving part so as to enable the lens to rotate relative to the lens barrel;

and the pressing plate is connected with the lens cone and pressed on the transmission piece, and the pressing plate and the transmission piece are in point contact.

According to the optical machine provided by the embodiment of the invention, the driving part transmits the driving force to the driving part, and the driving force is transmitted to the lens through the limit matching between the driving part and the lens, so that the lens rotates relative to the lens barrel to adjust the focal length to enable the picture to be clear. Driving medium sliding connection is on the lens cone, when the driving piece will drive power transmission to the driving medium, make the relative lens cone of driving medium slide, because the clamp plate presses on the driving medium, area of contact between clamp plate and the driving medium has decided driving power transmission's between driving piece and the driving medium smooth and easy to a certain extent, set up the contact between clamp plate and the driving medium into the point contact, use the point contact to replace the face contact, to a great extent has reduced area of contact, frictional force when having reduced the relative lens cone of driving medium and having slided, the resistance of driving power transmission between driving piece and the driving medium has also been reduced, guarantee that the resistance that the driving piece received is minimum, avoid the driving piece card to pause or die, the reliability and the quality of ray apparatus have been improved.

In some embodiments of the invention, the platen comprises:

a body connected to the lens barrel;

the contact part is connected to one side, facing the transmission piece, of the body, and the contact part is in point contact with the transmission piece.

In some embodiments of the invention, the platen comprises at least three contact portions.

In some embodiments of the invention, the at least three contact portions include a first contact portion, a second contact portion, and a third contact portion, and the first contact portion, the second contact portion, and the third contact portion are disposed at intervals on a side of the body facing the transmission member.

In some embodiments of the invention, the first contact portion, the second contact portion and the third contact portion are disposed at regular intervals on a side of the body facing the transmission member.

In some embodiments of the present invention, a surface of a position where the contact portion contacts the transmission member is rounded.

In some embodiments of the invention, the contact portion is a positioning bead embedded within the body.

In some embodiments of the invention, the contact portion is an at least partially spherical body integrally formed on a side of the body facing the transmission member.

In some embodiments of the present invention, the driving member includes a motor and a driving gear, the motor is connected to the lens barrel, the driving gear is connected to an output shaft of the motor, the transmission member is a rack, and the driving gear is engaged with the transmission member.

In some embodiments of the present invention, a guide groove is disposed on the lens barrel, a matching portion matched with the guide groove is disposed on the lens, a transmission groove is disposed on the transmission member, and the matching portion passes through the guide groove and is in limit matching with the transmission groove.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a perspective structural view of an optical machine according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a portion of the optical-mechanical apparatus shown in FIG. 1;

FIG. 3 is a side view of the light engine shown in FIG. 1;

fig. 4 is a schematic perspective view of the pressure plate shown in fig. 1.

The reference symbols in the drawings denote the following:

1. a lens barrel; 11. a guide groove;

2. a drive member; 21. a motor; 22. a drive gear;

3. a transmission member; 31. a transmission groove;

4. a lens; 41. a fitting portion;

5. pressing a plate; 51. a body; 52. a first contact portion; 53. a second contact portion; 54. a third contact portion.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 4, an optical machine according to an embodiment of the present invention includes a lens barrel 1, a driving member 2, a transmission member 3, a lens 4 and a pressing plate 5, wherein the driving member 2 is connected to the lens barrel 1, the transmission member 3 is in transmission fit with the driving member 2, the lens 4 is rotatably connected in the lens barrel 1, the transmission member 3 is slidably connected to the lens barrel 1 and in limit fit with the lens 4, the driving member 2 is configured to drive the transmission member 3 so as to rotate the lens 4 relative to the lens barrel 1, the pressing plate 5 is connected to the lens barrel 1 and is pressed against the transmission member 3, and the pressing plate 5 is in point contact with the transmission member 3. The driving part 2 transmits the driving force to the driving part 3, and transmits the driving force to the lens 4 through the limit matching between the driving part 3 and the lens 4, so that the lens 4 rotates relative to the lens barrel 1 to adjust the focal length to make the picture clear. Driving medium 3 sliding connection is on lens cone 1, when driving piece 2 will drive power transmission to driving medium 3, make driving medium 3 relative lens cone 1 slide, because clamp plate 5 presses on driving medium 3, area of contact between clamp plate 5 and the driving medium 3 has decided drive power transmission's between driving piece 2 and the driving medium 3 smooth and easy to a certain extent, set up the contact between clamp plate 5 and the driving medium 3 into the point contact, use the point contact to replace the face contact, to a great extent has reduced area of contact, frictional force when having reduced driving medium 3 relative lens cone 1 and sliding, the resistance that has just reduced drive power transmission between driving piece 2 and the driving medium 3, guarantee that the resistance that driving piece 2 received is minimum, avoid driving piece 2 card pause or card dead, the reliability and the quality of ray apparatus have been improved.

In some embodiments of the present invention, the pressing plate 5 and the lens barrel 1 are detachably connected, such as by clipping, screwing or screwing, for easy assembly and maintenance. In one embodiment, the pressing plate 5 is connected with the lens barrel 1 by screws, and further, the pressing plate 5 is detachably connected with the lens barrel 1 by three screws.

In some embodiments of the present invention, the pressure plate 5 includes a body 51 and a contact portion, the body 51 is detachably connected to the lens barrel 1 by a screw, the contact portion is provided on a side of the body 51 facing the transmission member 3, and the pressure plate 5 makes point contact with the transmission member 3 through the contact portion.

In some embodiments of the present invention, the contact portion and the transmission member are rounded at the contact position, so as to reduce the stress between the contact portion and the transmission member and avoid the surface scratch of the transmission member caused by the sharp contact portion.

In some embodiments of the present invention, the number of the contact portions may be one, two or more, in one embodiment, three contact portions are provided, namely, a first contact portion 52, a second contact portion 53 and a third contact portion 54, the first contact portion 52, the second contact portion 53 and the third contact portion 54 are arranged at intervals on the side of the body 51 facing the transmission member 3, and all of the first contact portion 52, the second contact portion 53 and the third contact portion 54 are in point contact with the transmission member 3, so that three contact points exist between the pressing plate 5 and the transmission member 3, that is, three points are used instead of the surface contact.

In some embodiments of the present invention, further, the first contact portion 52, the second contact portion 53 and the third contact portion 54 are disposed on the side of the body 51 facing the transmission member 3 at regular intervals, so as to ensure that the force between the pressing plate 5 and the transmission member 3 is uniform, and avoid damage caused by excessive force applied to a certain area.

In some embodiments of the present invention, the contact portion may be made of the same material as the body 51, and may be formed integrally with the body 51, or the contact portion may be made of a different material from the body 51, and may be connected to the body 51 by non-detachable connection such as gluing or detachable connection such as screwing. In one embodiment, the contact portion is an at least partially spherical body integrally formed on a side of the body facing the transmission member.

In some embodiments of the present invention, the contact portion and the body 51 may be fixed relative to each other, or the contact portion may be movable relative to the body 51 under the action of an external force. In one embodiment, the contact portion is configured to move relative to the body 51 under the action of an external force, the contact portion employs a positioning ball, the positioning ball includes a housing, a spring and a ball, the ball and the spring are disposed in the housing, one end of the spring is connected in the housing, the other end of the spring is connected with the ball, can the relative casing motion of compression spring when the ball receives the exogenic action, can resume to initial condition under the elasticity of spring when losing the exogenic action, use location ball and the contact of driving medium 3 to make between driving medium 3 and the clamp plate 5 be mobilizable point contact, frictional force when further having reduced the relative lens cone 1 of driving medium 3 and sliding, the resistance of driving force transmission between driving piece 2 and the driving medium 3 has also been reduced, guarantee that the resistance that driving piece 2 received is minimum, avoid driving piece 2 card pause or card to die, the reliability and the quality of ray apparatus have been improved.

In some embodiments of the present invention, the driving member 2 includes a motor 21 and a driving gear 22, the motor 21 is connected to the lens barrel 1, the driving gear 22 is connected to an output shaft of the motor 21, the driving gear 3 is a rack, the driving gear 22 is engaged with the driving member 3, the lens barrel 1 is provided with a guide groove 11, the lens 4 is provided with a matching portion 41 matched with the guide groove 11, the driving member 3 is provided with a transmission groove 31, the matching portion 41 penetrates through the guide groove 11 to be in limit fit with the transmission groove 31, a driving force output from the motor 21 to the driving gear 22 is a rotational driving force, the driving force is converted into a driving force in a sliding direction of the driving member 3 relative to the lens barrel 1 by engagement between the gear and the rack, the matching portion 41 penetrates through the guide groove 11 to be in limit fit with the transmission groove 31, the transmission groove 31 drives the matching portion 41 to rotate relative to the lens barrel 1, that is, the transmission groove 31 drives the lens 4 to rotate relative to the lens barrel 1, finally, the focal distance is adjusted to make the picture clear.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An optical bench, comprising:

a lens barrel;

a driving member connected to the lens barrel;

the transmission piece is in transmission fit with the driving piece;

2. The light engine of claim 1, wherein the platen comprises:

a body connected to the lens barrel;

3. The light engine of claim 2, wherein the platen comprises at least three contact portions.

4. The light engine of claim 3, wherein the at least three contact portions comprise a first contact portion, a second contact portion, and a third contact portion, and the first contact portion, the second contact portion, and the third contact portion are spaced apart from each other on a side of the body facing the transmission member.

5. The light engine of claim 4, wherein the first contact portion, the second contact portion, and the third contact portion are disposed at regular intervals on a side of the body facing the transmission member.

6. The light engine of claim 2, wherein the contact portion is rounded at a position where it contacts the transmission member.

7. The light engine of any of claims 2-6, wherein the contact portion is a positioning bead embedded in the body.

8. The machine of any of claims 2 to 6, wherein the contact portion is an at least partially spherical body integrally formed on a side of the body facing the transmission.

9. The optical bench according to any of the claims 1-6, wherein the driving member comprises a motor and a driving gear, the motor is connected to the lens barrel, the driving gear is connected to an output shaft of the motor, the transmission member is a rack, and the driving gear is engaged with the transmission member.

10. The optical machine according to any of the claims 1 to 6, wherein the lens barrel is provided with a guide groove, the lens is provided with a matching portion matching with the guide groove, the transmission member is provided with a transmission groove, and the matching portion passes through the guide groove and is in limit matching with the transmission groove.