CN217787476U

CN217787476U - Lens focusing structure and imaging device thereof

Info

Publication number: CN217787476U
Application number: CN202220570515.5U
Authority: CN
Inventors: 俞满铃
Original assignee: Shenzhen Shiyutong Technology Co ltd
Current assignee: Shenzhen Shiyutong Technology Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-11-11
Anticipated expiration: 2032-03-16

Abstract

The utility model discloses a camera lens focusing structure, include: the knob, the worm, the gear, the connecting piece, the camera lens subassembly, the worm is connected to the knob, the gear is connected to the worm, the connecting piece, gear and camera lens subassembly connect gradually, the gear sets up on the connecting piece, the camera lens subassembly sets up on the gear, the connecting piece is equipped with first shoulder hole, the aperture in first shoulder hole is equipped with first internal thread, the lower extreme of camera lens subassembly is equipped with the step shaft, the diameter of step shaft tip is the same with the diameter in first shoulder hole aperture, the step shaft tip is equipped with the first external screw thread that matches with first internal thread, the step shaft of camera lens subassembly passes the gear and passes through the threaded connection connecting piece, the hole and the step shaft main aspects cooperation of gear are connected. The lens focusing structure of the utility model is simple, easy to manufacture and assemble, convenient to operate, and can move the lens assembly up and down, thereby achieving the purpose of focusing; the rotation motion of the worm is converted into the linear motion of the lens component to achieve the purpose of adjusting the focal length.

Description

Lens focusing structure and imaging device thereof

Technical Field

The utility model relates to an imaging device technical field, concretely relates to is a camera lens focusing structure and imaging device thereof.

Background

In the imaging device in the prior art, such as a night vision viewer, an infrared thermal imager is generally manually focused, and a lens is generally moved back and forth during focusing, so that focusing is realized. Use the product often to need the focusing, reach and make the clear purpose of image, some this kind of focusing structures are complicated, and manufacturing cost is high, and the use of product is experienced relatively poorly, and the focusing motion process is unsmooth, and the focusing is not accurate.

Therefore, the lens focusing structure and the imaging device thereof are provided, the structure is simple, the use experience of products is improved, the focusing motion process is smooth, and the focusing is accurate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a camera lens focusing structure to solve foretell problem.

In order to achieve the above object, the utility model provides a following technical scheme: a lens focusing structure, comprising: the knob, the worm, the gear, the connecting piece, the camera lens subassembly, the worm is connected to the knob, the gear is connected to the worm, the connecting piece, gear and camera lens subassembly connect gradually, the gear sets up on the connecting piece, the camera lens subassembly sets up on the gear, the connecting piece is equipped with first shoulder hole, the aperture in first shoulder hole is equipped with first internal thread, the lower extreme of camera lens subassembly is equipped with the step shaft, the diameter of step shaft tip is the same with the diameter in first shoulder hole aperture, the step shaft tip is equipped with the first external screw thread that matches with first internal thread, the step shaft of camera lens subassembly passes the gear and passes through the threaded connection connecting piece, the hole and the step shaft main aspects cooperation of gear are connected.

Furthermore, the diameter of the large end of the stepped shaft is the same as that of the inner hole of the gear, a first plane part with a horizontal section is symmetrically arranged on the circumferential surface of the large end of the stepped shaft, and a second plane part matched with the first plane part in shape and position is arranged in the inner hole of the gear.

Further, the knob is equipped with the installation cylinder, and the installation cylinder is equipped with the third plane portion of horizontal cross-section, is equipped with first screw hole on the third plane portion, and the worm front end is equipped with the mounting hole that matches with the installation cylinder, and the worm front end is equipped with the second screw hole with first screw hole shape and position, and first screw hole and second screw hole pass through the screw installation.

Furthermore, a fourth plane portion with a horizontal section is arranged at the front end of the worm, and the second screw hole is located in the fourth plane portion.

Furthermore, the worm is connected with a worm fixing support, the worm fixing support is provided with a second stepped hole, the lens component is sleeved in the worm fixing support through the second stepped hole, the worm fixing support is provided with a rotating hole, the rear end of the worm is provided with a rotating column matched with the rotating hole, and the rotating column is placed in the rotating hole.

Furthermore, the device also comprises a limiting cylinder, wherein the limiting cylinder is provided with internal threads, the circumferential surface of the lower end of the connecting piece is provided with external threads, and the limiting cylinder is in threaded connection with the connecting piece.

Further, the imaging device comprises a lens focusing structure as claimed in any one of the preceding claims.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a camera lens focusing simple structure easily makes and assembles, and focusing convenient operation reciprocates the camera lens subassembly to this purpose that reaches focusing, converts the rotary motion of worm into the linear motion of camera lens subassembly and reaches the purpose of focus control, improves the use of product and experiences, and the focusing motion process is level and smooth, and the focusing is accurate.

Drawings

Fig. 1 is an angular exploded view of an embodiment of the present invention;

fig. 2 is an exploded view from another angle of an embodiment of the present invention;

fig. 3 is a perspective view of an embodiment of the present invention;

fig. 4 is a schematic view illustrating an installation of an angle housing and a lens focusing structure according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating an installation of another angle housing and a lens focusing structure according to an embodiment of the present invention;

in the figure: 1-knob, 2-worm, 3-gear, 4-connector, 5-lens component, 41-first step hole, 410-first internal thread, 51-step shaft, 510-first external thread, 511-first plane portion, 31-second plane portion, 10-mounting cylinder, 11-third plane portion, 12-first screw hole, 20-mounting hole, 21-second screw hole 21, 22-fourth plane portion, 6-worm fixing bracket, 61-second step hole, 62-rotation hole, 23-rotation column, 7-limiting cylinder, 8-housing, 80-knob hole, 81-containing cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: provided is a lens focusing structure, comprising: knob 1, worm 2, gear 3, connecting piece 4, lens subassembly 5, worm 2 is connected to knob 1, gear 3 is connected to worm 2, connecting piece 4, gear 3 and lens subassembly 5 connect gradually, gear 3 sets up on connecting piece 4, lens subassembly 5 sets up on gear 3, connecting piece 4 is equipped with first shoulder hole 41, the aperture of first shoulder hole 41 is equipped with first internal thread 410, the lower extreme of lens subassembly 5 is equipped with shoulder shaft 51, the diameter of shoulder shaft 51 tip is the same with the diameter of first shoulder hole 41 aperture, shoulder shaft 51 tip is equipped with the first external screw thread 510 that matches with first internal thread 410, shoulder shaft 51 of lens subassembly 5 passes the gear and passes through threaded connection connecting piece 4, the hole and the shoulder shaft 51 main part cooperation of gear 3 are connected. The utility model discloses a rotatory knob, it is rotatory thereupon to be connected the worm with the knob, the gear revolve who is connected with the worm, the gear is the helical gear, the camera lens subassembly is connected with the gear fit, the cooperation of being connected of camera lens subassembly and gear, camera lens subassembly and gear are movable from top to bottom, the camera lens subassembly rotates thereupon, the aperture of the first shoulder hole of step shaft tip threaded connection of camera lens subassembly, the camera lens subassembly rotates along first internal thread 410 through first external screw thread 510, the camera lens subassembly reciprocates along first internal thread 410, the distance that changes the camera lens subassembly and then the focusing. It should be noted that the stepped hole 41 is divided into a large hole section and a small hole section, the first internal thread 410 is provided at the position of the small hole section, and the stepped shaft 51 is divided into a large shaft section and a small shaft section, i.e., a large end and a small end.

Further, in order to make the lens component and the gear cooperatively connected, the inner hole of the gear is cooperatively connected with the large end of the stepped shaft, wherein the diameter of the large end of the stepped shaft 51 is the same as that of the inner hole of the gear 3, the circumferential surface of the large end of the stepped shaft 51 is symmetrically provided with a first plane part 511 with a horizontal section, the inner hole of the gear 3 is provided with a second plane part 31 matched with the first plane part 511 in shape and position, the inner diameter of the gear is the same as the outer diameter of the large end of the lens component, the lens component and the gear are cooperatively connected through the first plane part and the second plane part, the circumferential surface of the large end of the stepped shaft is provided with two parallel first plane parts, the first plane part and the second plane part are cooperatively connected, the inner diameter of the gear mounting hole is the same as the outer diameter of the large end of the lens component, the lens component and the gear are cooperatively connected through the first plane part and the second plane part, the gear rotates, and the lens component rotates along with the gear, and the lens component moves up and down along the thread.

Further, in order to fixedly connect the worm to the knob, the knob 1 is provided with a mounting cylinder 10, the mounting cylinder 10 is provided with a third plane part 11 having a horizontal cross section, the third plane part 11 is provided with a first screw hole 12, the front end of the worm 2 is provided with a mounting hole 20 matched with the mounting cylinder 10, the front end of the worm 2 is provided with a second screw hole 21 having a shape and a position corresponding to the first screw hole 12, and the first screw hole 12 and the second screw hole 21 are installed by screws.

Furthermore, the front end of the worm 2 is provided with a fourth plane portion 22 with a horizontal section, the second screw hole 21 is positioned in the fourth plane portion 22, and the screw is installed in the fourth plane portion, so that the screw head can be prevented from protruding too much, and the screw head can be prevented from touching other parts.

Further, in order to enable the worm to rotate stably and fix the worm, the worm is connected with a worm fixing support 6, the worm fixing support 6 is provided with a second stepped hole 61, the lens assembly 5 is sleeved in the worm fixing support 6 through the second stepped hole 61, the worm fixing support 6 is provided with a rotating hole 62, the rear end of the worm 2 is provided with a rotating column 23 matched with the rotating hole 62, and the rotating column 23 is placed in the rotating hole 62. The worm fixing bracket is fixed on the shell of the imaging device such as a night vision device through screws. The middle part of the worm is a helical gear used for driving the gear to move, the rear end of the worm is a rotating column, so that the worm rotates stably and fixes the worm, and the front end of the worm is used for connecting a knob. The lens component 5 comprises a stepped shaft and a lens part, the lens part is positioned at the upper end of the stepped shaft, the second stepped hole 61 is used for fixing the lens component, the stepped shaft 51 of the lens component 5 penetrates through a small hole of the second stepped hole 61, and the lens component is connected to the worm fixing support.

Furthermore, the lens component further comprises a limiting cylinder 7, the limiting cylinder 7 is provided with internal threads, external threads are arranged on the circumferential surface of the lower end of the connecting piece 4, the limiting cylinder 7 is in threaded connection with the connecting piece 4, and the limiting cylinder is installed at the lower end of the connecting piece and can limit the downward movement of the lens component.

Further, the present application also provides an imaging device, which is a night vision device or a thermal imaging device or a camera, and is characterized in that the imaging device includes the lens focusing structure as described in any one of the foregoing, as shown in fig. 4 to 5, a knob hole 80 is formed on the night vision device housing 8, the knob 1 extends out of the night vision device housing 8 into the housing through the knob hole 80, the knob hole 80 plays a role in fixing, the night vision device housing 8 is provided with an accommodating cavity 81 for accommodating the lens focusing structure, and the lens focusing structure is installed in the accommodating cavity 81.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A lens focusing structure, comprising: knob (1), worm (2), gear (3), connecting piece (4), lens subassembly (5), worm (2) are connected in knob (1), gear (3) is connected in worm (2), connecting piece (4), gear (3) and lens subassembly (5) connect gradually, gear (3) set up on connecting piece (4), lens subassembly (5) set up on gear (3), connecting piece (4) are equipped with first ladder hole (41), the aperture of first ladder hole (41) is equipped with first internal thread (410), the lower extreme of lens subassembly (5) is equipped with step shaft (51), the diameter of step shaft (51) tip is the same with the diameter of first ladder hole (41) aperture, step shaft (51) tip is equipped with first external screw thread (510) that match with first internal thread (410), gear (3) are passed through threaded connection connecting piece (4) step shaft (51) of lens subassembly (5), the hole and step shaft (51) main aspects cooperation of gear (3) are connected.

2. A lens focusing structure according to claim 1, characterized in that: the diameter of the large end of the stepped shaft (51) is the same as that of the inner hole of the gear (3), a first plane part (511) with a horizontal section is symmetrically arranged on the circumferential surface of the large end of the stepped shaft (51), and a second plane part (31) matched with the first plane part (511) in shape and position is arranged in the inner hole of the gear (3).

3. A lens focusing structure according to claim 1 or 2, characterized in that: knob (1) is equipped with installation cylinder (10), and installation cylinder (10) are equipped with horizontal cross-section's third plane portion (11), are equipped with first screw hole (12) on third plane portion (11), and worm (2) front end is equipped with mounting hole (20) that match with installation cylinder (10), and worm (2) front end is equipped with second screw hole (21) with first screw hole (12) shape and position, and first screw hole (12) and second screw hole (21) pass through the screw installation.

4. A lens focusing structure according to claim 3, characterized in that: the front end of the worm (2) is provided with a fourth plane part (22) with a horizontal section, and the second screw hole (21) is positioned in the fourth plane part (22).

5. A lens focusing structure according to claim 1, characterized in that: the worm is connected with worm fixed bolster (6), and worm fixed bolster (6) are equipped with second shoulder hole (61), and lens subassembly (5) are established in worm fixed bolster (6) through second shoulder hole (61) cover, and worm fixed bolster (6) are equipped with and rotate hole (62), and the rear end of worm (2) is equipped with rotates post (23) that matches with rotation hole (62), rotates post (23) and places into and rotate in hole (62).

6. A lens focusing structure according to claim 3, characterized in that: the connecting piece is characterized by further comprising a limiting cylinder (7), wherein an internal thread is arranged on the limiting cylinder (7), an external thread is arranged on the circumferential surface of the lower end of the connecting piece (4), and the limiting cylinder (7) is in threaded connection with the connecting piece (4).

7. An imaging apparatus, characterized in that the imaging apparatus comprises a lens focusing structure according to any one of claims 1 to 6.