CN201087850Y - Color wheel - Google Patents

Abstract

The utility model provides a color wheel, it includes a cover plate, a slide glass, a filter group and a motor. The cover plate provides a first central aperture. The slide glass is arranged on one side of the cover plate and comprises a second central hole corresponding to the first central hole and a bulge part surrounding the second central hole, and the bulge part is abutted against the cover plate so as to form an accommodating space between the cover plate and the slide glass. The filter set is placed in the accommodating space and is respectively connected with the cover plate and the slide glass in a gluing way to form a color ring. The motor comprises a stator and a rotating part, the rotating part is provided with a rotating shaft which is combined with the stator, and the rotating part sequentially passes through the second center hole and the first center hole to be connected with the color ring, so that the motor drives the color ring to move.

Description

color wheel

technical field

The utility model relates to a color wheel, in particular to a color wheel with close combination and reduced manufacturing cost.

Background technique

In the projection display device, in order to produce color contrast in the picture, a color wheel is generally set on the light path of the projection display device, and by rotating the color filters of different colors on the color wheel, continuous light beams are generated when the light beam passes through the color filter. Periodic color change, and adjust the color contrast with the action of the light valve to realize full-color image projection.

The traditional color wheel mainly consists of a motor and a set of color filters. The assembly of the color wheel is mostly carried out by mechanical alignment, that is, the motor and the color filter are arranged in a jig, and then assembled after being aligned with each other. When assembling the color wheel, the color filter is generally glued on the surface of the motor (Motor) rotor cover (Hub) on one side to form a color ring (ColorRing), and then the cover (Washer) is glued to the motor shaft superior.

Please refer to FIG. 1 . FIG. 1 is a color wheel structure disclosed in the prior art. The color wheel 100 is made by first aligning and gluing the color filter 120 on the motor 110 , and then positioning and gluing the cover 130 on the rotation shaft of the motor 110 while contacting the color filter 120 . This method easily leads to the problem of tilting of the cover sheet 130 . At the same time, due to the limited temperature that the motor 110 can withstand, the types of colloids required for gluing are limited, and the color filter 120 is adhered to the motor on one side, so it is necessary to use a motor with a flat bonding surface of the rotor cover (Hub). The process of making the motor is cumbersome, which increases the cost. If the glue is not good, the color filter 120 is easy to fall off during the operation of the color wheel 100 , causing damage to the projection display device.

Utility model content

The utility model provides a color wheel, which can prevent the problem of inaccurate alignment of the cover sheet and the problem of loose fixing of the filter group.

Other purposes and advantages of the utility model can be further understood from the technical characteristics disclosed in the utility model.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a color wheel, which includes a cover, a carrier, a filter set and a motor. The cover sheet provides a first central hole. The carrier is arranged on one side of the cover, and the carrier includes a second central hole corresponding to the first central hole and a raised portion surrounding the second central hole, and the raised portion is against the cover, so that the cover and the An accommodating space is formed between the carrier sheets, wherein the cover sheet and the carrier sheet are made by stamping. The optical filter is put into the containing space, and the optical filter group is respectively glued and connected with the cover sheet and the carrier sheet to form a color circle. The motor includes a stator and a rotating part, the rotating part includes a rotating shaft and a rotor cover, wherein the rotating shaft and the stator are combined, and the rotating part can pass through the second center hole and the first center hole or only pass through the second center The holes are arranged so that the rotating part is connected with the color ring, and then the motor drives the color ring to move.

Compared with the previous technology, because the carrier of the color wheel has a raised part, the axial positioning of the cover can be accurately positioned to prevent the offset of the cover; Tight, not easy to fall off; after the color wheel is assembled, the color wheel is combined with the motor, so if the color wheel is found to be defective, the color wheel can be scrapped directly, which can effectively reduce the cost.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments are particularly listed below, and the following detailed description is made with the accompanying drawings.

Brief description of the drawings

FIG. 1 is a schematic cross-sectional view of a color wheel in the prior art.

FIG. 2 is a partially exploded schematic diagram of a color wheel according to the first embodiment of the present invention.

FIG. 3 is a combined cross-sectional schematic diagram of a part of the structure in FIG. 2 .

FIG. 4 is a partially exploded schematic diagram of a color wheel according to a second embodiment of the present invention.

Detailed ways

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Therefore, the directional terms used are used to illustrate but not to limit the present invention.

Please refer to FIG. 2 . FIG. 2 is an exploded cross-sectional view of the color wheel shown in the first embodiment of the present invention. The color wheel 200 includes a cover 211 , a carrier 213 , a filter set 212 and a motor 220 . The cover piece 211 provides a first central hole 2111, and an outer edge of the cover piece 211 is provided with a protruding ring 2112, and the protruding ring 2112 is used for positioning and protecting a counterweight during dynamic balancing. The carrier sheet 213 is arranged on one side of the cover sheet 211, and the carrier sheet 213 includes a second center hole 2131 corresponding to the first center hole 2111 and a raised portion 2132 surrounding the second center hole 2131, and the raised portion 2132 is in contact with the second center hole 2131. cover sheet 211, to form an accommodating space between cover sheet 211 and slide 213, and also can control the axial positioning of cover sheet 211, to keep the consistency of the distance between cover sheet 211 and slide 213, wherein, cover Sheets and carriers are made by stamping. The optical filter 212 is put into the accommodation space, and the optical filter group 212 is glued and connected with the cover sheet 211 and the carrier sheet 213 respectively by colloid 250 to form a color ring 210, as shown in FIG. 3 , this method can make the filter The position of the light sheet 212 in the color wheel 210 is more intensified. Wherein, the optical filter 212 is composed of a plurality of fan-shaped sub-filters

The motor 220 includes a stator 224 and a rotating member 221. The rotating member 221 has a rotating shaft 222 and a rotor cover 223. The rotating shaft 222 is combined with the stator 224 to drive the rotating member 221. The center of the rotor cover 223 has a cylindrical Protrusion 223a; columnar protrusion 223a is set through the second central hole 2131 and the first central hole 2111 in sequence, so that the color ring 210 is combined with the rotating part 221 of the motor 220, wherein the first central hole, the second central hole The hole corresponds to the size of the stud protrusion 223a. Specifically, the rotating member 221 of this embodiment has a rotating shaft 222 and a rotor cover 223 closely combined with the rotating shaft 222. There is a columnar protrusion 223a at the center of the rotor cover 223, which passes through the first central hole 2111 of the cover sheet 211. With the second center hole 2131 of the carrier sheet 213, and the columnar protrusion 223a on the rotor cover 223 of the rotating member 221 is glued or closely fitted with the hole wall of the first center hole of the protrusion 2132 and the cover sheet 211 respectively. One way is combined, so that the color ring 210 is positioned on the rotor cover 223 to form a color wheel; in addition, the columnar protrusion 223a can also be installed through the second central hole 2131, the purpose is to make the color ring 210 and the motor The combination of the rotating part 221 of 220 can be implemented; in addition, a bottom surface of the carrier sheet 213 on the color wheel 210 can be glued directly to the rotor cover 223 to form a color wheel. For example, the columnar protrusion 223a is, for example, a columnar protrusion or other symmetrically shaped columnar protrusions. The shapes of the first center hole 2111 of the cover sheet 211 and the second center hole 2131 of the carrier sheet 213 correspond to the shape of the columnar protrusion 223a, such as circular holes or other shapes, but not limited thereto.

When assembling, the correct axial position of the optical filter 212 between the cover sheet 211 and the carrier sheet 212 is controlled first with the aid of a jig, so that the optical filter 212, the cover sheet 211, and the carrier sheet 213 have an appropriate glue thickness , to form the color wheel 210 ; after the color wheel 210 is assembled, the color wheel 210 is combined with the motor 220 by gluing or tight fitting to form the color wheel 200 .

In the above embodiment, the cover sheet 211 and the carrier sheet 213 have a flat bottom surface, which can be well positioned and attached to the surface of the rotor cover 223 of the motor 220, and the color ring 210 is made separately in advance, which can be made in advance. After the quality is screened, the high-quality products are then assembled to the motor 220, so as to avoid the problem of repeated processing after the bad products are assembled. In addition, the carrier sheet 213 may not have a flat bottom surface, and is directly bonded to the motor 220 through the color wheel 210 and the cylindrical protrusion 223 a on the rotor cover 223 to form the color wheel 200 .

Please refer to FIG. 4 . FIG. 4 is a schematic cross-sectional view of the color wheel shown in the second embodiment of the present invention. The motor 320 shown in the figure also includes a stator 324 and a rotating part 321, and the rotating part 321 includes a rotating shaft 322 and a rotor cover 323, wherein the rotating shaft 322 is combined with the stator 324 to drive the rotating part 221 to rotate, and the first The difference between the embodiments is that the rotating shaft 322 protrudes from the rotor cover 323, and the size of the rotating shaft 322 matches the size of the first center hole 3111 of the cover sheet and the size of the second center hole 3131 of the carrier sheet. The color wheel 310 is assembled on the shaft 322 of the motor 320 by gluing or tight fitting, so that the color ring 310 and the motor 320 can be closely combined to achieve the same effect as the previous embodiment.

In addition, in the above-mentioned embodiment, the central hole of the cover sheet of the color wheel and the carrier sheet can be designed to penetrate or not penetrate, if the central hole is designed to not penetrate, there is a top surface inside (not shown in the figure) , can withstand the shaft of the motor or the central columnar protrusion of the rotor cover, which is convenient for assembly and positioning.

Compared with the previous technology, because the carrier of the color wheel has a raised part, the axial positioning of the cover can be accurately positioned to prevent the offset of the cover; Tight, not easy to fall off; after the color wheel is assembled, the color wheel is combined with the motor, so if the color wheel is found to be defective, the color wheel can be scrapped directly, which can effectively reduce the cost.

Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art should be able to make some changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the appended claims as the criterion. In addition, any embodiment or claim of the utility model does not need to achieve all the objects or advantages or features disclosed in the utility model. In addition, the abstract part and the title are only used to assist the search of patent documents, and are not used to limit the scope of rights of the present utility model.

Claims (12)

1. A color wheel comprising: a cover sheet providing a first central hole; a slide, arranged on one side of the cover, the slide includes a second central hole corresponding to the first central hole and a raised portion surrounding the second central hole, and the raised portion is against the cover a sheet to form an accommodating space between the cover sheet and the carrier sheet, wherein the cover sheet and the carrier sheet are made by stamping; a filter set, placed in the accommodating space, and the filter set is respectively glued and connected to the cover sheet and the carrier sheet to form a color ring; and A motor includes a stator and a rotating part, the rotating part includes a rotating shaft and a rotor cover, wherein the rotating shaft is combined with the stator, and the rotating part is arranged through the second central hole, so that the rotating part It is connected with the color ring, and then the motor drives the color ring to move. 2. The color wheel as claimed in claim 1, wherein the rotating member is combined with the raised portion of the color wheel by one of gluing and tight fitting. 3. The color wheel as claimed in claim 2, wherein the rotor cover of the rotating member comprises a cylindrical protrusion, and the cylindrical protrusion is combined with the protrusion of the color wheel by one of glueing and tight fitting. 4. The color wheel as claimed in claim 3, wherein the columnar protrusions are disposed sequentially through the second central hole and the first central hole, so that the rotating member is connected with the color wheel. 5. The color wheel as claimed in claim 4, wherein the size of the first central hole and the second central hole corresponds to the size of the cylindrical protrusion on the rotor cover of the rotating member. 6. The color wheel as claimed in claim 2, wherein the rotating shaft protrudes from the rotor cover, and the rotating shaft is combined with the protruding portion of the color wheel by one of gluing or tight fitting. 7. The color wheel as claimed in claim 6, wherein the rotating shaft is disposed through the second central hole and the first central hole in sequence, so that the rotating member is connected with the color wheel. 8. The color wheel as claimed in claim 7, wherein the size of the first center hole and the second center hole corresponds to the rotation axis of the rotating member. 9. The color wheel as claimed in claim 1, wherein the filter set is composed of a plurality of fan-shaped sub-filters. 10. The color wheel of claim 1, wherein an outer edge of the cover includes a raised ring for positioning a weight. 11. The color wheel as claimed in claim 1, wherein the carrier has a flat bottom surface. 12. The color wheel as claimed in claim 1, wherein the rotor cover is glued to a bottom surface of the carrier.

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