CN100447664C - color wheel set - Google Patents

Abstract

The invention provides a color wheel group, comprising a rotating hub, a filter unit with a plurality of filters which can be combined together, a gland which can be locked with the rotating hub, and a joint unit which is provided with a plurality of limiting blocks which are respectively arranged on the filters, at least one limiting groove which is arranged on one of the rotating hub and the gland, wherein the limiting blocks are respectively provided with an inner side surface, an outer side surface which is opposite to the inner side surface, a first side end surface which is connected between the inner side surface and the outer side surface, a second side end surface which is connected between the inner side surface and the outer side surface and is opposite to the first side end surface, and a channel which extends from the first side end surface to the second side end surface.

Description

color wheel set

technical field

The invention relates to a color wheel set, in particular to a color wheel set which does not overflow glue when assembled and is easy to adjust dynamic balance.

Background technique

As shown in Figure 1, there is an existing color wheel set (US Pat. No. 5,868,482), which includes a motor 1, a carrier 2 mounted on the rotating shaft of the motor 1, and an adhesive coated on the carrier 2. Layers 3 and 3 are glued on the adhesive layer 3 to form a ring-shaped fan-shaped filter 4 and a clamp ring 5 that can cover the bonded area of the fan-shaped filter 4 . In this way, the motor 1 can drive the fan-shaped filter 4 to rotate at a high speed, so that the light projected through the fan-shaped filter 4 can finally generate an image on a screen (not shown).

Although the fan-shaped filter 4 of the color wheel set can be glued on the carrier 2 and driven by the motor 1, the color wheel set has the following defects in actual production and use:

1. When the dynamic balance correction of the color wheel set is performed after assembly, the dynamic balance correction of the color wheel set can only be performed by drilling a balance hole 201 on the carrier 2 . However, in the process of drilling the balance hole 201, if the force is not properly controlled, it is very easy to cause damage to the bearing supporting the carrier 2 inside the motor 1. In addition, the metal powder generated by drilling may also pollute the motor. And scratch the coating surface of the fan-shaped filter 4.

2. The fan-shaped filters 4 are glued together on the carrier 2. Therefore, when the color wheel set is assembled, if one of the fan-shaped filters 4 is damaged or of poor quality, the color wheel set will not It is impossible to perform maintenance by replacing the fan-shaped filter 4 individually, and thus the whole structure will be scrapped, which not only wastes parts, but also increases the production cost.

As shown in Figures 2 and 3, another existing color wheel set (US Patent No. 6,715,887) includes a motor 6, a bearing seat 7 with a ring groove 701 installed on the rotating shaft of the motor 6, a number of The fan-shaped filter 8, and a connecting ring 9 that can be tightly fitted in the ring groove 701. When this kind of color wheel group is assembled, firstly, the connection ring 9 and the fan-shaped filter 8 are cemented into one, and then the dynamic balance correction is performed on the connection ring 9 and the fan-shaped filter 8, and finally Then the connecting ring 9 is tightly fitted in the ring groove 701 . In this way, although the probability of poor dynamic balance after the overall assembly of the color wheel set can be reduced, the color wheel set also has the following deficiencies in actual production and use:

1. Since the top surface of the connecting ring 9 and the bottom surface of the fan-shaped filter 8 are bonded by glue, it is very easy for the glue to overflow to the bottom surface of the fan-shaped filter 8 during the bonding process. The bottom surface of the fan-shaped filter 8 interferes with the optical path.

2. In addition, since the fan-shaped filters 8 are glued together on the connecting ring 9, when the color wheel set is assembled, if one of the fan-shaped filters 8 is damaged or of poor quality, the The color wheel set cannot be maintained by replacing the fan-shaped filter 8 individually.

3. After the color wheel set is assembled, the dynamic balance may still be poor due to the factor of the motor 6, and it is difficult to perform dynamic balance correction.

Contents of the invention

The object of the present invention is to provide a color wheel set that does not overflow glue during assembly, is easy to adjust the dynamic balance, and can replace bad filters individually.

The color wheel set of the present invention includes a rotating hub, a filter unit, a pressing cover, and a joint unit. The rotating hub is rotatable around an axis. The filter unit has several filters that can be combined together. The gland can be locked with the rotating hub. The joint unit has a number of limit blocks respectively arranged on the filter, and at least one limit groove arranged on one of the rotating hub and the gland, and the limit blocks respectively have a an inner surface, an outer surface opposite to the inner surface, a first side end surface connected between the inner and outer surfaces, a second end surface connected between the inner and outer surfaces and opposite to the first side end surface side end surface, and a channel extending from the first side end surface to the second side end surface, when the gland is locked with the rotating hub to press the filter on the rotating hub, The limiting blocks are respectively embedded in the limiting grooves.

In this way, the present invention does not cause the problem of glue overflow during assembly or calibration, and can easily perform dynamic balance calibration, and replace defective optical filters individually.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

Fig. 1 is a partial cross-sectional schematic diagram of an existing color wheel group;

Fig. 2 is an exploded perspective view of another existing color wheel group;

Fig. 3 is a schematic partial sectional view of the color wheel set shown in Fig. 2;

Fig. 4 is an exploded perspective view of a preferred embodiment of the color wheel set of the present invention;

Fig. 5 is a partial sectional schematic view of the preferred embodiment;

Fig. 6 is a three-dimensional schematic view of an optical filter of the preferred embodiment after being bonded to a limiting block, illustrating that a balancing substance is placed in a channel of the limiting block;

FIG. 7 is a schematic top view of FIG. 6 .

Detailed ways

The aforementioned and other technical content, features and effects of the present invention will be clearly understood in the following detailed description of a preferred embodiment with reference to the drawings.

Referring to FIGS. 4 , 5 , and 6 , it is a preferred embodiment of the color wheel set of the present invention. The color wheel set can be mounted on a motor 100 having a shaft 110 and a rotor 120 . The color wheel set includes: a rotating hub 10 , a filter unit 20 , a gland 30 , a spacer 40 , a joint unit 50 , three bolts 60 , and a balance substance 70 .

The rotating hub 10 is installed on the rotating shaft 110 and the rotor 120 of the motor 100 , and the rotating hub 10 can be driven by the motor 100 to rotate around an axis.

The filter unit 20 has several filters 21 that can be combined together, and a central hole 22 . The filter 21 has a top surface 211, a bottom surface 212 opposite to the top surface 211, an outer peripheral surface 213 connected between the top and bottom surfaces 211, 212, and a bottom surface 213 connected to the top and bottom surfaces 211. , 212 and opposite to the inner peripheral surface 214 of the outer peripheral surface 213 . When the optical filter 21 is installed on the rotating hub 10 , the central hole 22 is defined by the inner peripheral surface 214 of the optical filter 211 .

The gland 30 has three through holes 31 through which the bolts 60 can respectively pass.

The spacer 40 is sandwiched between the bottom surface of the pressing cover 30 and the top surface 211 of the filter 21 .

The engaging unit 50 has a number limiting block 51 , a ring-shaped limiting groove 52 formed on the top surface of the rotating hub 10 , and a number of adhesive substances 53 .

The limiting block 51 has an inner surface 511, an outer surface 512 opposite to the inner surface 511, a first side end surface 513 connected between the inner and outer surfaces 511, 512, a first side end surface 513 connected to the inner surface , a second side end surface 514 between the outer surfaces 511, 512 and opposite to the first side end surface 513, a second side end surface 514 connected between the inner and outer surfaces 511, 512 and the first and second side end surfaces 513, 514 and facing The top surface 515 of the bottom surface 212 of the filter 21, a bottom surface 516 connected between the inner and outer surfaces 511, 512 and the first and second side end surfaces 513, 514 and opposite to the top surface 515, And a channel 517 recessed downward from the top end surface 515 and extending from the first side end surface 513 to the second side end surface 514 . When the adhesive substance 53 is respectively filled in the groove 517 of the limiting block 51, the adhesive substance 53 can place the limiting block 51 along the inner peripheral surface of the filter 21 214 is fixed on the bottom surface 212 of the optical filter 21 , so that the limiting blocks 51 are respectively fixed and integrated with the optical filter 21 .

Thereby, as shown in FIG. 5 , when the limiting blocks 51 are respectively embedded in the limiting grooves 52 so that the optical filter 21 is placed on the rotating hub 10 , the gland 30 and The washer 40 can be stacked on the filter 21 in sequence, then, when the bolt 60 passes through the through hole 31 of the gland 30 and the central hole 22 of the filter unit 20 in sequence and rotates with the filter unit 20 When the hub 10 is locked, the gland 30, the spacer 40 and the filter 21 can be tightly positioned on the rotating hub 10, and at the same time, the limiting block 51 can be pressed against the rotating hub 10. Inside the limiting groove 52. In this way, the motor 100 can drive the optical filter 21 to rotate at a high speed, so that the light projected through the optical filter 21 can finally produce an image on a screen (not shown).

In addition, as shown in Figures 6 and 7, when the present invention needs to perform dynamic balance correction after assembly, by loosening the bolt 60, the operator can connect one of the set of optical filters 21 that need to be corrected with the limit The block 51 is disassembled, and then the balance substance 70 (such as balance glue or balance soil) is put into an appropriate position in the channel 517 of the limit block 51 from the end of the first side end surface 513 to complete the calibration. . Of course, the balancing substance 70 can also be inserted into the channel 517 from the second end surface 514 .

Through the above description, the advantages of the present invention can be summarized as follows:

1. The adhesive substance 53 of the present invention is filled in the channel 517 of the limiting block 51, so as to bond the optical filter 21 and the limiting block 51. Therefore, in the bonding process In the present invention, the adhesive substance 53 will tend to flow in the channel 517 without overflowing to the bottom surface 212 of the filter 21, therefore, the present invention does not overflow the adhesive substance 53 And the problem of interference light path.

2. The present invention does not need to drill additional holes at all when performing dynamic balance correction, but performs dynamic balance correction by directly placing the balance substance 70 in the channel 517. Therefore, the present invention, in addition to completely In addition to not causing problems caused by conventional drilling, the balance substance 70 in the channel 517 will not cause interference on the mechanism or the optical path at all, and will not be thrown out due to centrifugal force at all.

3. In the present invention, after the bolts 60 are loosened, the optical filters 21 can be disassembled respectively. Therefore, when one of the optical filters 21 is damaged or of poor quality, the present invention can be replaced individually. The filter 21 is used for maintenance. In this way, the present invention can not only avoid wasting parts, but also reduce production cost.

It is worth mentioning that, of course, the limiting blocks 51 of the present invention can also be integrally formed on the bottom surface 212 of the optical filter 21 respectively. In addition, the channel 517 of the limiting block 51 of the present invention can also be recessed on the bottom end surface 516 of the limiting block 51, so that the limiting block 51 can be replaced by the adhesive substance 53 If it is glued to the top surface 211 of the optical filter 21, the same purpose and effect as above can also be achieved if the limiting groove 52 is arranged on the bottom surface of the gland 30 instead.

To sum up the above, the color wheel set of the present invention not only does not cause the problem of glue overflow during assembly or calibration, but also can easily perform dynamic balance calibration, and can replace defective filters individually, so it can indeed achieve purpose of the invention.

Claims (14)

1. colour wheel group is characterized in that:

This colour wheel group comprises:

One rotates hub, is to rotate around an axis;

One filter unit has number and group optical filter together;

One gland is and this rotation hub interlocking; And

One joint unit, have and count the limited block that is arranged at respectively on the described optical filter, and at least one this rotation hub that is arranged at, the wherein limited impression on of this gland, described limited block has a medial surface respectively, one lateral surface in contrast to this medial surface, one is connected in this, first side end face between the lateral surface, one is connected in this, between the lateral surface and in contrast to second side end face of this first side end face, an and conduit that extends to this second side end face from this first side end face, when this gland and this rotation hub interlocking, and when being positioned described optical filter packing on this rotation hub, described limited block is to be embedded at respectively in this limited impression.

2. colour wheel group as claimed in claim 1 is characterized in that:

Described optical filter all has an end face, a bottom surface in contrast to this end face, an outer peripheral face that is connected between this top, the bottom surface, and one be connected between this top, the bottom surface and in contrast to the inner peripheral surface of this outer peripheral face, this filter unit has more an inner peripheral surface by described optical filter and cooperated the center pit that defines.

3. colour wheel group as claimed in claim 2 is characterized in that:

This joint unit has more several adhesion substances, described limited block has one more respectively and is connected between this inside and outside side and this first and second side end face and towards the top end face of the bottom surface of described optical filter, and one be connected between this inside and outside side and this first and second side end face and in contrast to the bottom face of this top end face, the conduit of described limited block is to be arranged with down from described top end face, described adhesion substance is to be placed into respectively in the conduit of described limited block, and described adhesion substance is fixed in described limited block on the bottom surface of described optical filter.

4. colour wheel group as claimed in claim 3 is characterized in that:

This limited impression is to be formed on the end face of this rotation hub and to be circular.

5. colour wheel group as claimed in claim 4 is characterized in that:

This colour wheel group also comprises several bolts, and described bolt passes the center pit of this gland, this filter unit in regular turn, and this gland is locked on this rotation hub.

6. colour wheel group as claimed in claim 5 is characterized in that:

This colour wheel group also comprises a pad, and this pad is to be located between the end face of the bottom surface of this gland and described optical filter.

7. colour wheel group as claimed in claim 6 is characterized in that:

This colour wheel group also comprises at least one balance material, and this balance material is to be placed in the conduit of this limited block.

8. colour wheel group is characterized in that:

This colour wheel group comprises:

One rotates hub, is to rotate around an axis, and has a limited impression around this axis;

Count optical filter, have the inner peripheral surface and the outer peripheral face away from this axis of contiguous this axis respectively;

One gland is and this rotation hub interlocking; And

The number limited block, be to be incorporated into respectively on the position of the contiguous described inner peripheral surface of described optical filter, described limited block has a top end face that combines with described optical filter respectively, an and conduit that is arranged on this top end face, when this gland and this rotation hub interlocking, and when being positioned described optical filter packing on this rotation hub, described limited block is to be embedded at respectively in this limited impression.

9. colour wheel group as claimed in claim 8 is characterized in that:

Described limited block is to combine with described optical filter respectively by the number adhesion substance.

10. colour wheel group as claimed in claim 9 is characterized in that:

Described adhesion substance is to be placed into respectively in the conduit of described limited block.

11. colour wheel group as claimed in claim 8 is characterized in that:

This colour wheel group also comprises several bolts, and the inner peripheral surface cooperation of described optical filter defines a center pit, and described bolt passes this gland, this center pit in regular turn, and this gland is locked on this rotation hub.

12. colour wheel group as claimed in claim 11 is characterized in that:

This colour wheel group also comprises a pad, and this pad is to be located between the end face of the bottom surface of this gland and described optical filter.

13. colour wheel group as claimed in claim 8 is characterized in that:

Described limited block has more respectively that a bottom face in contrast to this top end face, is connected in that medial surface, between this top and bottom ends face is connected between this top and bottom ends face and is connected in that first side end face, between this top and bottom ends face and this inside and outside side is connected between this top and bottom ends face and this inside and outside side and in contrast to second side end face of this first side end face in contrast to the lateral surface, of this medial surface, the conduit of this limited block is to be arranged with down from this top end face, and extends to this second side end face from this first side end face.

14. colour wheel group as claimed in claim 13 is characterized in that:

This colour wheel group also comprises at least one balance material, and this balance material is to be placed in the conduit of this limited block.

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