CN216248518U

CN216248518U - Zoom driving device and zoom lens

Info

Publication number: CN216248518U
Application number: CN202122787089.9U
Authority: CN
Inventors: 江山; 廖广毅; 李巧
Original assignee: Dongguan Yutong Optical Technology Co Ltd
Current assignee: Dongguan Yutong Optical Technology Co Ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-08
Anticipated expiration: 2031-11-15

Abstract

The utility model belongs to the technical field of lenses and discloses a zooming driving device and a zooming lens, wherein the zooming driving device comprises a rotary driving mechanism and a zooming lens frame, the rotary driving mechanism comprises a shell and a driving assembly, the driving assembly is arranged in the shell, a first positioning part is arranged on the shell, and a second positioning part is arranged on the zooming lens frame; the zoom lens comprises the zoom driving device. The frame of zooming is connected with the group of zooming, and when first location portion was connected with second location portion, the frame of zooming can the transmission be connected in drive assembly's output, installation easy operation to make drive assembly can drive the frame of zooming and zoom the group and rotate, realize zooming of zoom lens.

Description

Zoom driving device and zoom lens

Technical Field

The utility model relates to the technical field of lenses, in particular to a zoom driving device and a zoom lens.

Background

The zoom lens is a camera lens which can change focal length in a certain range so as to obtain different wide and narrow field angles, images with different sizes and different scene ranges. The zoom lens can change a photographing range by varying a focal length without changing a photographing distance, and thus is very advantageous for picture composition. In the prior art, the zoom group is generally driven to rotate by the zoom driving device so as to adjust the focal length of the zoom group, but the installation of the zoom driving device is difficult due to the lack of positioning parts between the rotary driving mechanism and the frame.

Based on the above situation, it is desired to design a zoom driving apparatus to solve the above problems.

SUMMERY OF THE UTILITY MODEL

One object of the present invention is: provided is a zoom driving device which can position a rotary driving mechanism and a zoom lens frame and is easy to mount.

Another object of the utility model is: a zoom lens is provided, which comprises the zoom driving device.

In order to achieve the purpose, the utility model adopts the following technical scheme:

in one aspect, a zoom driving apparatus is disclosed, including:

the rotary driving mechanism comprises a shell and a driving assembly, and the driving assembly is arranged in the shell;

the zoom lens frame is connected with the zoom group, a first positioning part is arranged on the shell, a second positioning part is arranged on the zoom lens frame, and when the first positioning part is connected with the second positioning part, the zoom lens frame is in transmission connection with the output end of the driving assembly.

Preferably, the zoom lens frame is provided with a first toothed portion, the output end of the driving assembly is provided with a second toothed portion, one of the first positioning portion and the second positioning portion is provided as a positioning groove, the other is provided as a sliding portion, the positioning groove extends along the extending direction of the meshing line of the first toothed portion and the second toothed portion, and when the sliding portion slides in the positioning groove, the first toothed portion meshes with or disengages from the second toothed portion.

Preferably, the sliding part is provided as a sliding column which can slide in the positioning groove.

Preferably, the positioning groove includes a first guide groove and a second guide groove, the first guide groove communicates with the second guide groove, the first guide groove extends in a direction close to the first tooth-shaped portion or the second tooth-shaped portion, the second guide groove extends in an extending direction of the meshing line, and the sliding portion is slidable into the second guide groove via the first guide groove.

As a preferable scheme, the positioning grooves and the sliding portions are arranged in at least two groups in one-to-one correspondence, and the at least two groups of positioning grooves and the sliding portions are arranged along the circumferential direction of the first tooth-shaped portion.

Preferably, the first tooth profile is provided as a sector gear.

Preferably, the driving assembly includes a driving member and a speed reducing member, the speed reducing member is mounted on the housing and connected to an output end of the driving member, and the speed reducing member is in transmission connection with the zoom lens frame.

As a preferable scheme, the decelerating element includes a first decelerating element and a second decelerating element, the first decelerating element is installed inside the housing and is in transmission connection with the output end of the driving element, the driving element is installed on one side of the housing, the second decelerating element is installed on the other side of the housing and is in transmission connection with the first decelerating element, and the second decelerating element can drive the zoom lens frame to rotate.

As a preferable scheme, the zoom lens frame is sleeved on the zoom group, and the zoom lens frame can drive the zoom group to rotate.

In another aspect, a zoom lens is also disclosed, which comprises the zoom driving device.

The utility model has the beneficial effects that: the utility model provides a drive arrangement and zoom zooms the picture frame and zoom and organize and be connected, when being connected first location portion and second location portion, the picture frame transmission that zooms links in drive assembly's output, at last with the shell be fixed in the picture frame that zooms can, installation easy operation to make drive assembly can drive the picture frame that zooms and zoom and organize the rotation, realize zooming of zoom.

Drawings

The utility model is explained in more detail below with reference to the figures and examples.

Fig. 1 is an exploded view of a first viewing angle of a zoom driving apparatus;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an exploded view of a second viewing angle of the zoom driving apparatus;

fig. 4 is a schematic structural diagram of the zoom driving apparatus.

In fig. 1 to 4:

1. a rotation driving mechanism; 11. a housing; 111. a sliding post; 112. mounting holes; 12. a drive assembly; 121. a second tooth-shaped portion; 122. a drive member; 123. a speed reducer; 1231. a first reduction member; 1232. a second reduction member;

2. a zoom lens frame; 21. a first tooth-shaped portion; 22. positioning a groove; 221. a first guide groove; 222. a second guide groove;

3. and (4) zooming groups.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1 to 4, the present embodiment provides a zoom driving apparatus, which includes a rotary driving mechanism 1 and a zoom lens frame 2, wherein the rotary driving mechanism 1 includes a housing 11 and a driving assembly 12, the housing 11 includes an upper shell and a lower shell, the upper shell and the lower shell are assembled to form a mounting cavity, the driving assembly 12 is mounted in the mounting cavity, and an output end of the driving assembly extends out of the housing 11; the zoom lens frame 2 is connected with the zoom group 3 and can drive the zoom group 3 to rotate, a first positioning part is arranged on the shell 11, a second positioning part is arranged on the zoom lens frame 2, and the first positioning part and the second positioning part are arranged in a one-to-one correspondence mode and can be matched with each other. When the drive arrangement zooms in the installation, earlier zoom picture frame 2 with zoom group 3 and be connected, then make first location portion and the cooperation of second location portion, when first location portion is connected with second location portion, zoom picture frame 2 can the transmission connect in the output of drive assembly 12, use the screw to run through mounting hole 112 and connect to zoom picture frame 2 at last in order to be fixed in the picture frame 2 that zooms with shell 11 to drive assembly 12 can drive zoom picture frame 2 and zoom group 3 and rotate.

Specifically, the zoom lens frame 2 is provided with a first tooth-shaped portion 21, the frame body included in the zoom lens frame 2 and the first tooth-shaped portion 21 may be integrally formed or separately formed, the first tooth-shaped portion 21 is sleeved on the periphery of the frame body, the output end of the driving assembly 12 is provided with a second tooth-shaped portion 121, wherein the first positioning portion is provided as a sliding portion, the second positioning portion is provided as a positioning groove 22, the positioning groove 22 extends along the extending direction of the meshing line of the first tooth-shaped portion 21 and the second tooth-shaped portion 121, and since the extending directions of the meshing lines of the first tooth-shaped portion 21 and the second tooth-shaped portion 121 are different, the positioning groove 22 is also irregular, but only the positioning groove 22 is required to be parallel to the meshing line of the corresponding position. When the sliding part of the housing 11 slides in the positioning slot 22 of the zoom lens frame 2, the first tooth-shaped part 21 can gradually engage with the second tooth-shaped part 121, so that the zoom lens frame 2 is in transmission connection with the output end of the driving assembly 12, and the installation operation is simplified. In other embodiments of the present invention, the first positioning portion is provided as the positioning groove 22, and the second positioning portion is provided as the sliding portion, so that the function of meshing the first tooth-shaped portion 21 with the second tooth-shaped portion 121 can also be realized. In other embodiments of the present invention, the zoom lens frame 2 may also be connected to the output end of the driving assembly 12 in a driving manner by a shaft sleeve and a transmission shaft key, the first positioning portion and the second positioning portion are respectively configured as a positioning hole and a pin shaft, and when the pin shaft is inserted into the positioning hole along the vertical direction, the transmission shaft of the driving assembly 12 is inserted into the shaft sleeve to realize the driving connection between the zoom lens frame 2 and the driving assembly 12.

As shown in fig. 3, the sliding portion of the present embodiment is provided as a sliding column 111, the sliding column 111 is provided at a side of the housing 11 close to the zoom lens frame 2, and an end of the sliding column 111 can slide in the positioning slot 22 to position the driving component 12 in transmission connection with the zoom lens frame 2. In other embodiments of the utility model, the sliding part may also be provided as a ball, which is likewise able to roll in the positioning slot 22.

As shown in fig. 1 and 2, the positioning groove 22 includes a first guide groove 221 and a second guide groove 222 which are communicated with each other, and the first guide groove 221 can be regarded as an opening of the second guide groove 222, wherein the first guide groove 221 extends in a direction close to the first tooth-shaped portion 21, and the second guide groove 222 extends in an extending direction of a meshing line of the first tooth-shaped portion 21 and the second tooth-shaped portion 121. As the sliding column 111 slides within the first guide groove 221, the second toothed portion 121 gradually approaches and abuts the first toothed portion 21; when the sliding column 111 slides to the second guide groove 222 via the first guide groove 221, and then the sliding column 111 slides in the second guide groove 222, the second tooth 121 engages with the first tooth 21, further simplifying the assembling operation.

As a preferred embodiment, the positioning groove 22 and the sliding portion are arranged in at least two sets corresponding to each other, the specific number can be set according to actual needs, the embodiment is provided with two positioning grooves 22 and two sliding portions corresponding to the two positioning grooves 22, the two sets of positioning grooves 22 and the sliding portions are arranged along the circumferential direction of the first tooth-shaped portion 21, the sliding portions are prevented from rotating in the positioning grooves 22, and the positioning reliability is improved.

As a preferred embodiment, the first tooth portion 21 is provided as a sector gear, and since the angle of rotation required for the zoom group 3 is small, the zoom lens frame 2 does not need to rotate at a large angle.

In this embodiment, the driving assembly 12 includes a driving member 122 and a speed reducing member 123, the driving member 122 may be configured as an electric motor or a pneumatic motor, the driving member 122 of this embodiment is an electric motor, the speed reducing member 123 may be configured as a gear speed reducing mechanism or a belt speed reducing mechanism, the speed reducing member 123 is installed on the housing 11 and connected to an output end of the electric motor, and the other end of the speed reducing member 123 is connected to the zoom lens frame 2 in a transmission manner. When the motor drives the zoom lens frame 2 to rotate, the speed reducer 123 can reduce the rotation speed output by the motor and drive the zoom lens frame 2 to rotate, so that the zoom group 3 can be focused more accurately.

As a preferred embodiment, the speed reducer 123 includes a first speed reducer 1231 and a second speed reducer 1232, the first speed reducer 1231 is configured as a two-gear speed reducing mechanism, the two-gear speed reducing mechanism are both installed inside the housing 11, the motor is installed at the bottom of the housing 11, one of the two-gear speed reducing mechanism is connected to the output end of the motor, the second speed reducer 1232 is configured as a belt speed reducing mechanism, one of the two shafts of the belt speed reducing mechanism is connected to the output end of the gear speed reducing mechanism, a belt is wound on the two shafts, the other shaft is in transmission connection with the other gear speed reducing mechanism, and the gear at the output end of the gear speed reducing mechanism is the second tooth-shaped portion 121, so that three-stage speed reduction of the motor is achieved. The first speed reducer 1231 is installed inside the housing 11, and the motor and the second speed reducer 1232 are separately installed on both sides of the housing 11, so that the structure is more compact.

As shown in fig. 4, the zoom lens frame 2 is sleeved and connected to the periphery of the zoom group 3, the structure is compact, and when the rotation driving mechanism 1 drives the zoom lens frame 2 to rotate, the zoom lens frame 2 can drive the zoom group 3 to rotate synchronously.

The embodiment also provides a zoom lens, which includes a fixed focus group, a zoom group 3 and the zoom driving device, where the fixed focus group is in threaded connection with the zoom group 3, the zoom group 3 is connected to an execution end of the zoom driving device in a transmission manner, and the zoom driving device can drive the zoom group 3 to rotate so as to adjust a focal length of the zoom group 3. Wherein the installation of the zoom driving device is simple, thereby simplifying the assembling operation of the zoom lens.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A zoom driving apparatus, characterized by comprising:

a rotary drive mechanism (1) comprising a housing (11) and a drive assembly (12), the drive assembly (12) being mounted within the housing (11);

the zoom lens frame (2) can be connected with the zoom group (3), a first positioning part is arranged on the shell (11), a second positioning part is arranged on the zoom lens frame (2), and when the first positioning part is connected with the second positioning part, the zoom lens frame (2) is in transmission connection with the output end of the driving component (12).

2. Zoom drive as claimed in claim 1, characterized in that the zoom lens frame (2) is provided with a first toothed portion (21), the output end of the drive assembly (12) is provided with a second toothed portion (121), one of the first positioning portion and the second positioning portion is provided as a positioning groove (22), the other is provided as a sliding portion, the positioning groove (22) extends in the extending direction of the meshing line of the first toothed portion (21) and the second toothed portion (121), and the first toothed portion (21) meshes with or disengages from the second toothed portion (121) when the sliding portion slides within the positioning groove (22).

3. Zoom drive as claimed in claim 2, characterized in that the slide is provided as a slide post (111), the slide post (111) being slidable in the positioning slot (22).

4. The zoom drive device according to claim 2, wherein the positioning groove (22) includes a first guide groove (221) and a second guide groove (222), the first guide groove (221) communicates with the second guide groove (222), the first guide groove (221) extends in a direction close to the first tooth-shaped portion (21) or the second tooth-shaped portion (121), the second guide groove (222) extends in an extending direction of the meshing line, and the sliding portion is slidable into the second guide groove (222) via the first guide groove (221).

5. Zoom drive as claimed in claim 2, characterized in that the detents (22) and the slides are arranged in at least two groups in a one-to-one correspondence, the at least two groups of detents (22) and slides being arranged in the circumferential direction of the first tooth-shaped portion (21).

6. Zoom drive as claimed in claim 2, characterized in that the first tooth profile (21) is provided as a sector gear.

7. Zoom drive as claimed in claim 1, characterized in that the drive assembly (12) comprises a drive member (122) and a reduction member (123), the reduction member (123) being mounted to the housing (11) and connected to an output of the drive member (122), the reduction member (123) being in driving connection with the zoom lens frame (2).

8. The zoom drive according to claim 7, characterized in that the reduction gear (123) comprises a first reduction gear (1231) and a second reduction gear (1232), the first reduction gear (1231) is mounted inside the housing (11) and is in transmission connection with an output end of the driving member (122), the driving member (122) is mounted on one side of the housing (11), the second reduction gear (1232) is mounted on the other side of the housing (11) and is in transmission connection with the first reduction gear (1231), and the second reduction gear (1232) can drive the zoom lens frame (2) to rotate.

9. Zoom drive according to claim 1, characterized in that the zoom lens frame (2) is sleeved on the zoom group (3), and the zoom lens frame (2) can rotate with the zoom group (3).

10. A zoom lens comprising the zoom driving apparatus according to any one of claims 1 to 9.