CN216956636U

CN216956636U - Focusing device and projector

Info

Publication number: CN216956636U
Application number: CN202123090967.8U
Authority: CN
Inventors: 余锋; 金凌琳; 赵凤洋
Original assignee: Dangqu Network Technology Hangzhou Co Ltd
Current assignee: Dangqu Network Technology Hangzhou Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-07-12
Anticipated expiration: 2031-12-09

Abstract

The present invention relates to a focusing apparatus and a projector, the focusing apparatus including: a housing; the focusing piece is rotatably connected with the shell, part of the focusing piece penetrates out of the first shell, and a first limiting part is formed; the fixed support is sleeved on the focusing piece, a second limiting part matched with the first limiting part is formed, and the second limiting part is fixedly connected with the shell, wherein the first limiting part is a convex part, the second limiting part is a groove, or the second limiting part is a convex part, and the first limiting part is a groove. According to the technical scheme, the focusing piece is rotationally connected with the shell, the fixing support sleeved on the focusing piece is arranged in a matched mode through the convex part and the groove, and the fixing support is fixedly connected with the shell, so that the fixing support has a limiting effect on the axial direction of the focusing piece, axial displacement generated when the focusing piece is rotationally focused is effectively prevented, the stability of the rotational connection of the focusing piece and the shell is improved, and the normal operation of focusing is well guaranteed.

Description

Focusing device and projector

Technical Field

The utility model relates to the technical field of focusing devices, in particular to a focusing device and a projector.

Background

The focusing device generally performs projection through a wall, and the distance from the wall can be selected differently according to the actual requirements of users, and the definition can be changed along with the change of the distance. In order to ensure that the definition of a projection picture can meet the visual requirement of a user, focusing operation needs to be completed through a focusing structure, so that the definition of the projection picture is improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a focusing device which is simple in structure, has a good limiting effect on a focusing piece, improves the focusing stability of the focusing piece and has good applicability.

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

a focusing apparatus, comprising:

a housing;

the focusing piece is rotatably connected with the shell, and part of the focusing piece penetrates out of the shell to form a first limiting part;

the fixed support is sleeved on the focusing piece, a second limiting part matched with the first limiting part is formed, and the second limiting part is fixedly connected with the shell, wherein the first limiting part is a convex part, the second limiting part is a groove, or the second limiting part is a convex part, and the first limiting part is a groove.

Preferably, the first limiting part is a groove, the second limiting part is a convex part, the outer surface of the focusing piece is circumferentially formed into the groove, and the convex part is clamped in the groove.

Preferably, a friction part is formed on the outer surface of the focusing part, at least one rib position is formed on one side surface of the fixing support facing the focusing part, and each rib position is abutted against the friction part.

Preferably, the two ends of the fixing bracket are provided with extending parts, the extending parts penetrate through the fixing bracket along the thickness direction of the extending parts to form mounting holes, and the inner surface of the shell is provided with mounting parts fixedly connected with the mounting holes.

Preferably, the focusing device further comprises a bolt member, and the bolt member sequentially penetrates through the mounting hole and the mounting portion and is locked and fixed.

Preferably, a through hole is formed in the housing in a penetrating manner along the thickness direction of the housing, the focusing member is rotatably arranged in the through hole in a penetrating manner, a plurality of supporting parts are further formed on the outer surface of the focusing member, and each supporting part is arranged in contact with the through hole.

Preferably, the focusing device further comprises a lens and an optical machine which is connected with the lens and arranged in the shell, a sliding groove is formed in the inner wall surface of the focusing piece, and the lens is slidably mounted in the focusing piece through the sliding groove.

Preferably, a handle is further formed on the focusing member, and the handle is located outside the housing.

Preferably, a plurality of reinforcing ribs are formed on the surface of one side of the fixing bracket, which is far away from the focusing piece, and the plurality of reinforcing ribs are arranged at intervals along the length direction and/or the width direction of the fixing bracket.

The utility model also provides a projector comprising the focusing device.

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

the focusing device provided in the technical scheme comprises a focusing piece connected with a shell in a rotating mode, a fixing support arranged on the focusing piece in a sleeved mode, a convex part and a groove are arranged in a matched mode, the fixing support is fixedly connected with the shell, the fixing support plays a limiting role in the axial direction of the focusing piece, axial displacement is effectively prevented from being generated when the focusing piece is in rotating focusing, the stability of the rotating connection of the focusing piece and the shell is improved, and then the focusing operation is guaranteed well and normally performed, and the focusing device has good applicability.

Drawings

FIG. 1 is a schematic structural diagram of a focusing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the focusing member of FIG. 1;

FIG. 3 is an enlarged view of the point A shown in FIG. 2;

FIG. 4 is a schematic view of a fixing bracket of a focusing apparatus according to an embodiment of the present invention;

FIG. 5 is a schematic structural view of a portion of the subassembly shown in FIG. 1;

FIG. 6 is an enlarged view of the point B shown in FIG. 5;

fig. 7 is an exploded view of the housing, the focusing member, the fixing bracket, the lens and the optical engine of the focusing apparatus shown in fig. 1.

Description of the symbols of the drawings:

1. a housing; 11. an installation part; 12. a through hole; 2. a focusing member; 21. a first limiting part; 22. a friction portion; 23. a support portion; 24. a chute; 25. a handle; 3. fixing a bracket; 31. a second limiting part; 32. a rib position; 33. an extension portion; 331. mounting holes; 34. reinforcing ribs; 4. a bolt member; 5. a lens; 6. and (5) an optical machine.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and 7, a focusing apparatus provided in an embodiment of the present invention includes a housing 1, a focusing element 2, a fixing bracket 3, a bolt 4, a lens 5, and an optical engine 6.

The focusing piece 2 is rotatably connected with the shell 1, part of the focusing piece penetrates out of the shell 1, and a first limiting part 21 is formed; the fixed bolster 3 is located on the focusing piece 2, be formed with the spacing portion 31 of second that the cooperation of first spacing portion 21 set up, and with 1 rigid coupling of casing, wherein, first spacing portion 21 is the convex part, the spacing portion 31 of second is the recess, or the spacing portion 31 of second is the convex part, first spacing portion 21 is the recess, can understand, sets up through the cooperation of convex part and recess, and fixed bolster 3 and 1 rigid coupling of casing for fixed bolster 3 plays limiting displacement to the axial of focusing piece 2, produces axial displacement when effectively preventing focusing piece 2 from rotating the focusing, thereby improves the stability that focusing piece 2 and 1 rotation of casing are connected, and then better assurance focusing operation normally goes on.

It should be noted that an operator realizes focusing operation by rotating the part of the focusing member 2 penetrating to the outside of the casing 1, the focusing member 2 is annular, the first limiting member is circumferentially formed on the outer surface of the focusing member 2, the fixing bracket 3 is arc-shaped, and the fixing bracket 3 is matched with the focusing member 2 in shape.

Specifically, as shown in fig. 2 to 4, in this embodiment, the first limiting portion 21 is a groove, the second limiting portion 31 is a protrusion, the groove is formed on the outer surface of the focusing part 2 in the circumferential direction, and the protrusion is clamped and fixed in the groove.

In order to realize fixed bolster 3 and casing 1 rigid coupling, fixed bolster 3 both ends are formed with extension 33, extension 33 runs through along its thickness direction and is formed with mounting hole 331, be formed with on the casing 1 internal surface with the installation department 11 that mounting hole 331 corresponds the setting, bolt spare 4 passes in proper order mounting hole 331 with installation department 11 and locking are fixed, as shown in fig. 5-6, extension 33 can be arbitrary shape, and bolt spare 4 sets up two, sets up two installation departments 11 and two extension 33, through each bolt spare 4 one-to-one with each installation department 11 and each extension 33 rigid coupling, thereby make fixed bolster 3 fixed mounting in casing 1.

In one embodiment, a friction portion 22 is formed on an outer surface of the focusing member 2, at least one rib portion 32 is formed on a side surface of the fixing bracket 3 facing the focusing member 2, and each rib portion 32 is abutted against the friction portion 22.

It can be understood that, as shown in fig. 2 and 4, in this embodiment, the friction portion 22 is formed on the surface of the focusing element 2 inside or outside the housing 1, the friction portion 22 includes a plurality of protrusions, each of the protrusions is axially disposed along the focusing element 2, the friction portion 22 and the first limiting portion 21 are disposed at an interval, the rib portion 32 is axially disposed along the fixing bracket 3, the friction portion 22 is disposed in abutment with the rib portion 32, when the focusing element 2 rotates, the protrusions and the rib portion 32 contact with each other for setting the hand feeling of the focusing element 2, which is beneficial to the control of the operator on the rotation angle of the focusing element 2, and meanwhile, the friction portion 22 is formed on the focusing element 2 outside the housing 1, which can increase the friction force between the operator and the focusing element 2, so that the focusing operation is more smooth.

In a preferred embodiment, a through hole 12 is formed through the housing 1 in a thickness direction thereof, the focus adjusting member 2 is rotatably inserted into the through hole 12, a plurality of support portions 23 are further formed on an outer surface of the focus adjusting member 2, and each support portion 23 is provided in contact with the through hole 12.

As shown in fig. 2, 3 and 7, in this embodiment, the four supporting portions 23 are provided and are uniformly distributed along the circumferential direction of the outer surface of the focusing element 2, of course, the supporting portions 23 may be set to any number, the supporting portions 23 are disposed in contact with the through holes 12, the focusing element 2 is rotatably connected with the housing 1, and the four supporting portions 23 are disposed in contact with the through holes 12 only, so that the condition that the focusing element 2 is not smoothly rotated due to the large-area contact with the through holes 12 is avoided.

In a preferred embodiment, the focus adjusting member 2 further includes a handle 25, the handle 25 is located outside the housing 1, as shown in fig. 2, the handle 25 may have any shape, and the number of the handles may be plural, and when focusing is required, the handle 25 may rotate the focus adjusting member 2, and the handle 25 and the friction portion 22 cooperate to rotate the focus adjusting member 2, thereby facilitating focusing and further improving smoothness of focusing operation.

Wherein, as shown in fig. 6, fixed bolster 3 keeps away from one side of focusing piece 2 is formed with a plurality of strengthening ribs 34 on the surface, and is a plurality of strengthening rib 34 is followed 3 length direction of fixed bolster and/or width direction are the interval setting, set up a plurality of strengthening rib 34 improves the structural strength of fixed bolster 3 improves the durability of fixed bolster 3 to improve fixed bolster 3 and to the spacing stability of focusing piece 2 axial, further guarantee that the focusing operation normally goes on.

In one embodiment, as shown in fig. 7, the optical machine 6 is connected to the lens 5 and disposed in the housing 1, a sliding groove 24 is formed on an inner wall surface of the focusing element 2, the lens 5 is slidably mounted in the focusing element 2 through the sliding groove 24, the lens 5 is electrically connected to the optical machine 6, when focusing is required, the focusing element 2 is rotated, the focusing element 2 acts on the lens 5 through the sliding groove 24, a width dimension of an outer side of the sliding groove 24 is smaller than a width dimension of an inner side of the sliding groove 24, so that the lens 5 extends and retracts back and forth along an axial direction thereof, and focusing is achieved, and the sliding groove 24 is used for limiting focusing of the lens 5.

The utility model further provides a projector which comprises the focusing device, please refer to fig. 1-7 continuously, the focusing device is arranged, the fixing support 3 has a limiting effect on the axial direction of the focusing element 2 through the matching arrangement of the convex part and the groove, the axial displacement generated when the focusing element 2 rotates and focuses is effectively prevented, the stability of the rotating connection between the focusing element 2 and the shell 1 is improved, and the normal focusing operation in the projector is further ensured.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A focusing apparatus, comprising:

a housing (1);

the focusing piece (2) is rotatably connected with the shell (1), and part of the focusing piece penetrates out of the shell (1) to form a first limiting part (21);

the fixed support (3) is sleeved on the focusing piece (2), a second limiting part (31) matched with the first limiting part (21) is formed, the shell (1) is fixedly connected with the fixed support, the first limiting part (21) is a convex part, the second limiting part (31) is a groove, or the second limiting part (31) is a convex part, and the first limiting part (21) is a groove.

2. A focusing device according to claim 1, characterized in that the first position-limiting part (21) is a groove, the second position-limiting part (31) is a protrusion, the groove is formed on the outer surface of the focusing element (2) in the circumferential direction, and the protrusion is engaged in the groove.

3. The focusing device according to claim 1, characterized in that a friction part (22) is formed on the outer surface of the focusing member (2), at least one rib position (32) is formed on the surface of one side of the fixing bracket (3) facing the focusing member (2), and each rib position (32) is arranged in abutment with the friction part (22).

4. The focusing device according to claim 1, wherein the fixing bracket (3) is formed with extending portions (33) at both ends thereof, the extending portions (33) are formed with mounting holes (331) penetrating in the thickness direction thereof, and the housing (1) is formed with mounting portions (11) on the inner surface thereof to be fixedly connected to the mounting holes (331).

5. The focusing device according to claim 4, characterized in that the focusing device further comprises a bolt member (4), and the bolt member (4) is passed through the mounting hole (331) and the mounting portion (11) in this order and locked and fixed.

6. The focusing device according to claim 1, wherein a through hole (12) is formed through the housing (1) along the thickness direction thereof, the focusing member (2) is rotatably inserted into the through hole (12), a plurality of supporting portions (23) are further formed on the outer surface of the focusing member (2), and each supporting portion (23) is in contact with the through hole (12).

7. The focusing device according to claim 1, characterized in that the focusing device further comprises a lens (5) and an optical machine (6) connected with the lens (5) and arranged in the housing (1), a sliding slot (24) is formed on the inner wall surface of the focusing member (2), and the lens (5) is slidably mounted in the focusing member (2) through the sliding slot (24).

8. A focusing device according to claim 1, wherein a handle (25) is further formed on the focusing member (2), said handle (25) being located outside the housing (1).

9. The focusing device according to claim 1, wherein a plurality of ribs (34) are formed on a surface of the fixing mount (3) on a side away from the focusing member (2), and the plurality of ribs (34) are provided at intervals in a length direction and/or a width direction of the fixing mount (3).

10. A projector comprising the focusing apparatus of any of claims 1 to 9.