CN216790086U - Knob regulation type optical zooming structure - Google Patents
Knob regulation type optical zooming structure Download PDFInfo
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- CN216790086U CN216790086U CN202220169777.0U CN202220169777U CN216790086U CN 216790086 U CN216790086 U CN 216790086U CN 202220169777 U CN202220169777 U CN 202220169777U CN 216790086 U CN216790086 U CN 216790086U
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Abstract
The utility model belongs to the technical field of zoom structures, in particular to a knob adjusting type optical zoom structure, which comprises: the zoom lens comprises a shell, a front cover, a rear cover, a bottom box and a zoom mechanism, wherein the shell comprises a shell body and sliding chutes, and the side walls of the shell body are provided with symmetrical sliding chutes; the front cover is arranged at the front end of the shell; the rear cover is arranged at the rear end of the shell; the bottom box is arranged at the bottom of the shell; zoom mechanism sets up the casing inner chamber, zoom mechanism includes light source subassembly, rack, focusing axle, gear, locking knob, focusing knob and gear support, the light source subassembly sets up at the casing inner chamber, rack connection is on the light source subassembly, focusing epaxial setting with rack toothing's gear, focusing axle is installed on gear support, can realize adjusting and locking function on the same axle, accommodation process convenient and fast, convenience of customers carries out manual regulation and uses.
Description
Technical Field
The utility model relates to the technical field of zooming structures, in particular to a knob adjusting type optical zooming structure.
Background
The existing zooming structure needs to move the light source or the lens, a focusing screw needs to be rotated to drive a focusing nut, the axial displacement of the focusing nut is closely related to the lead of the screw (the lead refers to the distance that the screw rotates for one circle and the nut can move axially), the small-lead screw nut can be precisely adjusted, but the focusing nut can move for a sufficient distance only by rotating for many circles; the lead screw can move the focusing nut rapidly, which brings about the problem that a larger driving force is needed, and the other problem that the focusing nut and the load can easily slide off by itself if the screw does not have a locking device, especially for the heavy products. The above problems are particularly prominent in products for manually adjusting focal length, and the user is not changed because the zoom can be effectively adjusted by rotating for multiple circles.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract and the title of the application to avoid obscuring the purpose of this section, the abstract and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
The present invention has been made in view of the above and/or problems occurring in the conventional optical zoom.
Therefore, the utility model aims to provide a knob adjusting type optical zooming structure, which adopts the meshing principle of a gear and a rack to convert the circular motion of the gear into the linear motion of the rack to realize the focusing function; the rack limiting device is arranged, one end of the focusing shaft is prevented from deviating from the rack, the focusing knob is arranged, the other end of the focusing shaft is provided with the locking device, the functions of adjustment and locking can be achieved on the same shaft, the adjustment process is convenient and fast, and the manual adjustment and the use are convenient for users.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a knob adjustment type optical zoom structure, comprising:
the shell comprises a shell body and sliding chutes, wherein the side walls of the shell body are provided with the symmetrical sliding chutes;
the front cover is arranged at the front end of the shell;
a rear cover disposed at a rear end of the housing;
the bottom box is arranged at the bottom of the shell;
the zooming mechanism is arranged in the inner cavity of the shell and comprises a light source assembly, a rack, a focusing shaft, a gear, a locking knob, a focusing knob and a gear support, wherein the light source assembly is arranged in the inner cavity of the shell, the rack is connected to the light source assembly, the focusing shaft is provided with the gear meshed with the rack, the focusing shaft is arranged on the gear support, one end of the focusing shaft is connected with the locking knob extending out of the sliding groove, and the other end of the focusing shaft is connected with the focusing knob extending out of the sliding groove.
As a preferable aspect of the knob adjustment type optical zoom structure according to the present invention, wherein: and decorative strips are arranged on the sliding grooves.
As a preferable aspect of the knob adjustment type optical zoom structure according to the present invention, wherein: be provided with gasket, jump ring and nylon axle sleeve between locking knob and the focusing axle, gasket, jump ring and nylon axle sleeve are all established in the focusing axle outer end.
As a preferable aspect of the knob adjustment type optical zoom structure according to the present invention, wherein: the tail end of the focusing shaft is provided with a step and an external thread, and the diameter of the external thread is smaller than that of the focusing shaft to form the step.
As a preferable aspect of the knob adjustment type optical zoom structure according to the present invention, wherein: and a limit screw matched with the rack is arranged on the gear support.
Compared with the prior art: the utility model adopts the principle of meshing the gear and the rack, converts the circular motion of the gear into the linear motion of the rack to realize the focusing function; the rack limiting device is arranged, one end of the focusing shaft is prevented from deviating from the rack, the focusing knob is arranged, the other end of the focusing shaft is provided with the locking device, the functions of adjustment and locking can be achieved on the same shaft, the adjustment process is convenient and fast, and the manual adjustment and the use are convenient for users.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
FIG. 1 is a schematic side view of the present invention;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic illustration of the explosive structure of the present invention;
FIG. 4 is an exploded view of the zoom mechanism of the present invention;
fig. 5 is a schematic view of the internal installation structure of the housing of the present invention.
In the figure: 100 casing, 110 casing, 120 chute, 200 front cover, 300 back cover, 400 bottom box, 500 zoom mechanism, 510 light source component, 520 rack, 530 focusing shaft, 540 gear, 550 locking knob, 551 gasket, 552 clamp spring, 553 nylon shaft sleeve, 560 focusing knob, 570 gear bracket and 600 decorative strip.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a knob adjusting type optical zooming structure, which adopts the principle of meshing a gear and a rack to convert the circular motion of the gear into the linear motion of the rack to realize the focusing function; the rack limiting device is arranged, one end of the focusing shaft which prevents the rack from deviating is provided with the focusing knob, the other end of the focusing shaft is provided with the locking device, the same shaft can realize the functions of adjustment and locking, the adjustment process is convenient and fast, and a user can conveniently and manually adjust the focusing shaft, and the focusing shaft comprises the following components: a housing 100, a front cover 200, a rear cover 300, a bottom case 400, and a zoom mechanism 500.
The housing 100 includes a casing 110 and a sliding groove 120, wherein the sliding groove 120 is symmetrically formed on a side wall of the casing 110, and the sliding groove 120 is used for accommodating the focusing shaft 530.
The front cover 200 is disposed at the front end of the housing 110;
the rear cover 300 is disposed at the rear end of the case 110;
the bottom case 400 is disposed at the bottom of the case 110;
A decorative strip 600 is provided on the chute 120.
A gasket 551, a clamp spring 552 and a nylon shaft sleeve 553 are arranged between the locking knob 550 and the focusing shaft 530, and the gasket 551, the clamp spring 552 and the nylon shaft sleeve 553 are all sleeved at the outer end of the focusing shaft 530.
The end of the focus adjustment shaft 530 is provided with a step and an external thread having a diameter smaller than that of the focus adjustment shaft 530 to form a step.
The gear bracket 570 is mounted with a limit screw that engages the rack 520.
Wherein, the convex lens or fresnel lens and the front cover 200 are installed together, connected and fixed by screws to form a front cover assembly;
fixing the front cover assembly to the front end of the casing 100 with front cover fixing screws;
two sliding grooves 110 are arranged at the diagonal positions of the inner wall of the shell 100;
the light source assembly 510 is provided with guide screws at two sides thereof, and the light source assembly 510 is installed in the sliding grooves 110 at two sides inside the housing 100 through cylindrical heads of the screws, so that the light source assembly 510 can only slide along the direction of the sliding grooves 110;
two front limiting screws are arranged at the position of the chute 110 of the casing 100 close to the front cover to prevent the light source assembly 510 from exceeding the adjustable stroke range;
a rack 520 is arranged behind the light source assembly 510, and the tooth form on the rack 520 is matched with that of the gear 540;
the gear bracket 570 is fixed on the rear cover 300 through a flat pad and a gear bracket fixing screw;
the rear cover 300 is fixed at the end of the housing 100 by a rear cover fixing screw;
two shaft holes are formed in the gear bracket 570, the focusing shaft 530 penetrates through the two shaft holes, and a gear 540, two nylon shaft sleeves, two snap springs, two gaskets, a locking knob and a focusing knob are mounted on the focusing shaft 530;
two rack limiting screws are arranged on the gear bracket 570 to prevent the rack 520 from deviating;
the gear 540 is fixed on the focusing shaft 530 by two fastening screws, and the gear 540 and the focusing shaft 530 rotate synchronously;
the focusing knob 560 is fixed on the focusing shaft 530 by a set screw, and the focusing knob 560 and the focusing shaft 530 rotate synchronously;
the gear bracket 570 is provided with two screw holes, and two rack limiting screws are respectively arranged on the two screw holes and used for limiting the movement direction of the rack 520;
two flat gaskets are arranged at the external thread end of the focusing shaft 530, the inner diameter of each flat gasket is smaller than the outer diameter of the step of the focusing shaft 530, and the two flat gaskets are respectively positioned at the inner side and the outer side of the shell 110;
the outermost side of the outer threaded end of the focusing shaft 530 is provided with a locking knob 550 matching the thread thereof.
When in specific use, the light source assembly 510 is installed in the sliding slot 110 at two sides inside the housing 100, and due to the action of the guide screws, the light source assembly 510 can only slide along the sliding slot 110;
when the focus knob 560 is turned, the gear 540 is driven to synchronously turn through the focus shaft 530, and because the gear 540 is meshed with the rack 520, the gear 540 and the rack 520 together convert the rotary motion of the gear 540 into the linear motion of the rack 520;
because the rack 520 is installed on the light source assembly, the linear motion of the rack 520 drives the light source assembly 510 to do corresponding linear motion, thereby changing the distance between the light source assembly 510 and the convex lens or the Fresnel lens and realizing the zooming function;
when the focal length needs to be adjusted, the locking knob 550 is loosened, the focusing knob 560 can freely rotate to adjust the focal length, the locking knob 550 is screwed after the adjustment is finished, and because the two flat gaskets are arranged at the external thread end of the focusing shaft 530 and are respectively positioned at the inner side and the outer side of the shell, when the locking knob 550 is screwed, the shell is pressed tightly under the common pressure action of the steps of the locking knob 550 and the focusing shaft 530, so that the purpose of locking the focusing shaft 530 is achieved.
While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. A knob adjustment type optical zoom structure, comprising:
the shell (100) comprises a shell body (110) and sliding chutes (120), wherein the sliding chutes (120) are symmetrically formed in the side wall of the shell body (110);
a front cover (200) disposed at a front end of the housing (110);
a rear cover (300) disposed at a rear end of the housing (110);
a bottom case (400) disposed at the bottom of the case (110);
zoom mechanism (500), the setting is in casing (110) inner chamber, zoom mechanism (500) includes light source subassembly (510), rack (520), focusing axle (530), gear (540), locking knob (550), focusing knob (560) and gear bracket (570), light source subassembly (510) set up in casing (110) inner chamber, rack (520) are connected on light source subassembly (510), set up gear (540) with rack (520) meshing on focusing axle (530), focusing axle (530) are installed on gear bracket (570), locking knob (550) that stretch out spout (120) are connected to focusing axle (530) one end, focusing knob (560) that stretches out spout (120) are connected to focusing axle (530) other end.
2. A knob adjustment type optical zoom structure according to claim 1, wherein a decorative strip (600) is provided on the slide groove (120).
3. The knob adjusting type optical zoom structure according to claim 1, wherein a gasket (551), a snap spring (552) and a nylon shaft sleeve (553) are disposed between the locking knob (550) and the focusing shaft (530), and the gasket (551), the snap spring (552) and the nylon shaft sleeve (553) are all sleeved on the outer end of the focusing shaft (530).
4. A knob adjustment type optical zoom structure according to claim 1, wherein the end of the focusing shaft (530) is provided with a step and an external thread having a smaller diameter than the diameter of the focusing shaft (530) to form a step.
5. The knob adjusting type optical zoom structure according to claim 1, wherein the gear bracket (570) is mounted with a limit screw engaged with the rack (520).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220169777.0U CN216790086U (en) | 2022-01-21 | 2022-01-21 | Knob regulation type optical zooming structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220169777.0U CN216790086U (en) | 2022-01-21 | 2022-01-21 | Knob regulation type optical zooming structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216790086U true CN216790086U (en) | 2022-06-21 |
Family
ID=82014076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220169777.0U Active CN216790086U (en) | 2022-01-21 | 2022-01-21 | Knob regulation type optical zooming structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216790086U (en) |
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2022
- 2022-01-21 CN CN202220169777.0U patent/CN216790086U/en active Active
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