CN220232073U

CN220232073U - Conversion mechanism

Info

Publication number: CN220232073U
Application number: CN202321843639.7U
Authority: CN
Inventors: 邹翔; 范盛强; 王文君
Original assignee: Chengdu Kexinda Co ltd
Current assignee: Chengdu Kexinda Co ltd
Priority date: 2023-07-13
Filing date: 2023-07-13
Publication date: 2023-12-22
Anticipated expiration: 2033-07-13

Abstract

The utility model belongs to the technical field of reversing structures, and particularly discloses a conversion mechanism which comprises a support, wherein the support is provided with mutually perpendicular planes, a reversing block is rotationally connected in the support, two mutually perpendicular planes of the support are respectively and vertically provided with an adjusting screw rod and a top shaft, the top shaft is in sliding fit with the support, the adjusting screw rod is in threaded connection with the support, and one ends of the top shaft and one end of the adjusting screw rod are respectively propped against two ends of the reversing block. The conversion mechanism can realize 90-degree transmission, save space and avoid interference.

Description

Conversion mechanism

Technical Field

The utility model relates to the technical field of reversing structures, in particular to a conversion mechanism.

Background

In a key optical adjustment frame for adjusting the posture of a large-aperture optical element in an optical system, a common technique is to directly adjust the posture of the optical element by making a driving mechanism perpendicular to a backlight surface of the optical element. However, in the prior art, the whole adjusting frame occupies a larger space, and particularly, a speed reducer is added when high resolution is needed, which results in a larger assembly space, and interference is difficult to avoid when the space is limited or adjustment of a specific angle is needed, so that smooth installation and use are affected.

Disclosure of Invention

The utility model provides a conversion mechanism, which aims to effectively save space and avoid interference.

The utility model is realized by the following technical scheme: the utility model provides a conversion mechanism, includes the support, have two planes of mutually perpendicular on the support, the rotation is connected with the switching-over piece in the support, and two planes of support mutually perpendicular are equipped with adjusting screw and jackshaft respectively perpendicularly, the jackshaft with support sliding fit, adjusting screw with support threaded connection, the jackshaft with the one end of adjusting screw offsets with the both ends of switching-over piece respectively.

Compared with the prior art, the utility model has the following advantages and beneficial effects: in the conversion structure in this scheme, adjusting screw and jackshaft are connected on the plane of support mutually perpendicular, like this when using, through being connected the output and the adjusting screw of drive assembly, and be connected the picture frame subassembly and the jackshaft that install optical element, can realize like this that optical element and picture frame subassembly and the drive assembly parallel arrangement of installation optical element, the direction of delivery of drive assembly has been changed, when drive assembly drive adjusting screw rotated, because adjusting screw and support threaded connection, and the support is required fixed when using, consequently, drive assembly drive adjusting screw removes, and the in-process that adjusting screw removed will play the effect of promotion to the reversing block, and because reversing block and support rotate and be connected, consequently, adjusting screw will promote the reversing block and swing, the in-process of reversing block swing will play the promotion to the jackshaft, and make the jackshaft slide perpendicularly along the support, thereby make the picture frame subassembly that is connected with the jackshaft and the optical element on the picture frame subassembly realize the angle modulation's purpose.

The conversion structure in the scheme can enable the driving mechanism to be placed in parallel with the light-facing surface of the optical element, can save space under a specific angle, and avoid interference, so that high-precision adjustment of the posture of the large-caliber optical element can be realized.

Further, the support comprises a supporting seat and a threaded sleeve seat, a cavity is formed in the supporting seat, the reversing block is located in the cavity and is rotationally connected with the supporting seat, the threaded sleeve seat is detachably connected with the supporting seat, the adjusting screw is in threaded connection with the threaded sleeve seat, and the top shaft is in vertical sliding fit with the supporting seat.

The beneficial effects are that: in this scheme, the support includes supporting seat and swivel nut seat, and the swivel nut seat is connected with the supporting seat again after being connected with adjusting screw cooperation like this for the assembly is more convenient, the swivel nut seat with the supporting seat can dismantle and be connected, more convenient later stage change maintenance like this.

Further, the screw sleeve seat is detachably connected with a screw sleeve, and the adjusting screw is in threaded connection with the screw sleeve on the screw sleeve seat.

The beneficial effects are that: the adjusting screw rod on the screw sleeve is convenient to install or detach.

Further, the cross section of the reversing block is in a fan shape, one end of the reversing block facing the adjusting screw rod and the top shaft is a plane end, and the two plane ends of the reversing block are mutually perpendicular.

The beneficial effects are that: the fan-shaped structure of switching-over piece is less at pivoted in-process resistance in this scheme, and compare in being rectangular block structure, and the required space of switching-over piece is littleer in this scheme to can reduce whole conversion mechanism's volume.

Further, one ends of the reversing block, which are propped against the adjusting screw and the top shaft, are connected with gaskets, and one ends of the adjusting screw, which are contacted with the reversing block, are connected with steel balls, which are contacted with the gaskets.

The beneficial effects are that: the arrangement is that the gasket is embedded in the reversing block to be in contact with the steel ball, so that the contact rigidity of the kinematic pair can be improved.

Further, a bushing is connected to the support, and the top shaft is in sliding fit with the bushing in the axial direction.

The beneficial effects are that: the arrangement can protect the support, reduce friction with the top shaft, and the smoothness of the surface of the bushing is convenient for processing and manufacturing.

Further, the bushing is removably mated with the support.

The beneficial effects are that: the bushing is convenient to replace after being worn after long-term use.

Further, the reversing block is coaxially connected with a rotating shaft, and the rotating shaft is rotatably connected with the supporting seat through a bearing.

The beneficial effects are that: the reversing block is rotationally connected with the supporting seat through the rotating shaft and the bearing, and the reversing block rotates more flexibly.

Further, the reversing block is connected with the rotating shaft in a matched mode through a key and a key groove.

The beneficial effects are that: the connection mode of the reversing block and the rotating shaft is simple and stable, and the reversing block is convenient to install or detach.

Further, the corner formed by the two end surfaces of the support seat, which are not provided with the adjusting screw and the top shaft, is an oblique angle.

The beneficial effects are that: the arrangement is convenient for interference with the adjusting frame for installing the optical element in the later use process.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model. In the drawings:

FIG. 1 is a longitudinal cross-sectional view of one embodiment of a conversion mechanism of the present utility model;

fig. 2 is a schematic diagram showing a state in which the driving component and the optical element are connected by a switching mechanism in the present embodiment.

In the drawings, the reference numerals and corresponding part names:

bushing 1, bearing 2, steel ball 3, key 4, gasket 5, swivel nut 6, adjusting screw 7, spout 701, supporting seat 8, switching-over piece 9, top axle 10, pivot 11, swivel nut seat 12, base 13, picture frame subassembly 14, conversion mechanism 15, drive assembly 16, optical element 17.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

As shown in fig. 1 and 2, this embodiment provides a conversion mechanism, including a support, two planes perpendicular to each other are provided on the support, a reversing block 9 is rotatably connected in the support, two planes perpendicular to each other of the support are respectively and vertically provided with an adjusting screw 7 and a top shaft 10, the top shaft 10 is in sliding fit with the support, the adjusting screw 7 is in threaded connection with the support, and one ends of the top shaft 10 and the adjusting screw 7 are respectively abutted to two ends of the reversing block 9.

Specific: in this embodiment, the support includes supporting seat 8 and swivel nut seat 12, the cavity has been seted up to the supporting seat 8 inside, reversing block 9 is located the cavity and rotates with supporting seat 8 to be connected, coaxial coupling has pivot 11 on reversing block 9 in this embodiment, rotate through bearing 2 between pivot 11 and the supporting seat 8 and be connected, pass through key 4 and keyway cooperation between reversing block 9 and the pivot 11 and be connected, the keyway has all been seted up in reversing block 9 and the pivot 11 promptly, realize connecting through key 4 in the keyway of reversing block 9 and pivot 11, the key in this embodiment is the flat key, reversing block 9 pivoted in-process can rotate together with pivot 11 like this.

The swivel nut seat 12 is detachably connected with the supporting seat 8, the swivel nut seat 12 is located at the right end of the supporting seat 8 in the embodiment, detachable fixing is achieved between the swivel nut seat 12 and the supporting seat 8 through screws, the adjusting screw 7 is in threaded connection with the swivel nut seat 12, the swivel nut 6 is detachably connected to the swivel nut seat 12 in the embodiment, the adjusting screw 7 is in threaded connection with the swivel nut 6 on the swivel nut seat 12, holes matched with the swivel nut 6 are formed in the swivel nut seat 12, the swivel nut 6 is inserted into the holes in the swivel nut seat 12 to achieve connection and fit with the swivel nut seat 12, and accordingly detachment and replacement are facilitated when the later adjusting screw 7 and the swivel nut 6 are worn.

The top shaft 10 is vertically matched with the supporting seat 8 in a sliding manner, and specifically: in this embodiment, the support seat 8 of the support is connected with the bushing 1, the top shaft 10 is in sliding fit with the axial direction of the bushing 1, the bushing 1 is detachably matched with the support seat 8 of the support, and in this embodiment, the connection matching mode between the bushing 1 and the support seat 8 is the same as the connection matching mode between the threaded sleeve 6 and the threaded sleeve seat 12, which is not described herein.

In this embodiment, the cross section of the reversing block 9 is in a fan shape, one end of the reversing block 9 facing the adjusting screw 7 and the top shaft 10 is a plane end, two plane ends of the reversing block 9 are mutually perpendicular, and one end of the fan-shaped structure of the reversing block 9, which extends mutually, is cylindrical, so that the reversing block is convenient to be coaxially connected with the rotating shaft 11.

In this embodiment, the end of the reversing block 9, which abuts against the adjusting screw 7 and the top shaft 10, is connected with a gasket 5, the gasket 5 is a hard alloy gasket 5, in this embodiment, grooves are formed on two plane ends of the reversing block 9, and the gasket 5 is embedded into the grooves of the reversing block 9, which is convenient for installing or replacing the gasket 5. In the embodiment, steel balls 3 are connected to one ends of the adjusting screw 7 and the top shaft 10, which are contacted with the reversing block 9, and the two steel balls 3 can be contacted with gaskets 5 on two plane ends of the reversing block 9.

In this embodiment, a sliding groove 701 is formed in the right portion of the adjusting screw 7, the adjusting screw 7 is connected with the output end of the driving assembly 16 in a matched manner through the sliding block 701, and thus the driving assembly 16 can drive the adjusting screw 7 to rotate and the adjusting screw 7 can also move. Likewise, the driving assembly 16 may be connected to the adjusting screw 7 through a telescopic commutator, so that one end of the commutator is connected to the output end of the driving assembly 16, the other end of the commutator is connected to the chute 701 of the adjusting screw 7 through a key, and a bellows capable of generating telescopic motion is disposed between two ends of the commutator to connect, so that the adjusting screw 7 can be driven to rotate and move.

In another embodiment, the supporting seat 8 is in a rectangular block structure, and the corner formed by the two end surfaces of the supporting seat 8, which are not provided with the adjusting screw 7 and the top shaft 10, is an oblique angle, and referring to fig. 2, when the conversion mechanism 15 of the present utility model is connected with the adjusting frame of the optical element 17 and the driving assembly 16, the oblique angle on the supporting seat 8 can avoid interference.

The specific implementation process is as follows: as shown in fig. 2, a conversion mechanism 15 of the present utility model is connected to a driving unit 16 and an adjusting frame having an optical element 17 mounted thereon, the adjusting frame is integrally connected to a base 13, a lens frame unit 14 is connected to the adjusting frame, and the optical element 17 is connected to the lens frame unit 14.

When the optical element is installed, the adjusting screw 7 in the conversion mechanism 15 is connected with the output end of the driving component 16, and the top shaft 10 is propped against the mirror frame component 14, so that the driving component 16 and the light-facing surface of the optical element 17 are in a parallel state, the conversion mechanism can realize 90-degree transmission, space can be saved under a specific angle, and interference is avoided.

The drive assembly 16 drives the adjusting screw 7 to rotate, and as the adjusting screw 7 is in threaded fit with the threaded sleeve 6, the adjusting screw 7 can axially move along the threaded sleeve 6 in the rotating process, the reversing block 9 is pushed to swing clockwise in the moving process of the adjusting screw 7, and the reversing block 9 plays a role in pushing the jacking shaft 10 while swinging clockwise, so that the jacking shaft 10 pushes the mirror frame assembly 14 and the optical element 17 on the mirror frame assembly 14 to realize deflection adjustment of angles, and high-precision adjustment of the gesture of the large-caliber optical element 17 can be realized.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a conversion mechanism, includes the support, have two planes of mutually perpendicular on the support, its characterized in that, the support rotation is connected with the switching-over piece, and two planes of support mutually perpendicular are equipped with adjusting screw and jackshaft respectively perpendicularly, the jackshaft with support sliding fit, adjusting screw with support threaded connection, the jackshaft with the one end of adjusting screw offsets with the both ends of switching-over piece respectively.

2. The switching mechanism according to claim 1, wherein the support comprises a support seat and a screw sleeve seat, a cavity is formed in the support seat, the reversing block is located in the cavity and is rotationally connected with the support seat, the screw sleeve seat is detachably connected with the support seat, the adjusting screw is in threaded connection with the screw sleeve seat, and the top shaft is vertically and slidably matched with the support seat.

3. A conversion mechanism according to claim 2, wherein the sleeve seat is detachably connected with a sleeve, and the adjusting screw is in threaded connection with the sleeve on the sleeve seat.

4. A conversion mechanism according to claim 1, wherein the cross section of the reversing block is in the shape of a fan, and the ends of the reversing block facing the adjusting screw and the top shaft are planar ends, and the two planar ends of the reversing block are perpendicular to each other.

5. A conversion mechanism according to any one of claims 1 to 4 wherein the end of the reversing block that abuts against the adjusting screw and the top shaft is connected with a spacer, and the end of the adjusting screw and the top shaft that contacts the reversing block is connected with a steel ball that contacts the spacer.

6. A conversion mechanism according to claim 1, wherein a bushing is connected to the support, the top shaft being in sliding axial engagement with the bushing.

7. A conversion mechanism according to claim 6, wherein said bushing is removably engaged with said support.

8. The switching mechanism according to claim 2, wherein the reversing block is coaxially connected to a rotating shaft, and the rotating shaft is rotatably connected to the supporting seat through a bearing.

9. The conversion mechanism of claim 8, wherein the reversing block is coupled to the shaft by a key-to-key fit.

10. A conversion mechanism according to claim 2, wherein the corner formed by the two end surfaces of the support base where the adjusting screw and the top shaft are not provided is an oblique angle.