Magnifier assembly for projector

Abstract

The utility model discloses a magnifying lens assembly for a projector. The magnifying lens assembly comprises a magnifying lens and a mounting plate, the mounting plate is provided with an elastic clamping piece, the elastic clamping piece protrudes out of the back face of the mounting plate, and the elastic clamping piece is used for stretching into and being detachably clamped in an air inlet of a front cover of a projector so that the magnifying lens assembly can be fixedly arranged on the front cover of the projector in a covering mode. And the magnifying lens directly faces a projection lens of the projector.

Description

Technical Field

[0001] The utility model relates to projector accessories, in particular to a magnifying glass assembly for a projector. Background Art

[0002] The features of projection devices such as convenient use and large screens are deeply loved by users. With the increase in usage scenarios, users pursue larger projection screen sizes to achieve a better viewing experience or atmosphere rendering. However, since the size of the projection screen is restricted by the hardware parameters of the projection optical machine, it is difficult to further expand, and the further expansion of its usability is limited. As a projection device expansion accessory, the panoramic mirror can be used in a projector to cooperate to achieve, for example, the magnification of a starry sky projection screen so as to cover a large ceiling area.

[0003] The panoramic mirror is generally fixed to the projector by using a manual flip piece to achieve the clamping connection between the panoramic mirror and the projector. However, when installing and disassembling the panoramic mirror, it is necessary to use fingers to forcefully flip and pick out the flip piece, and the operation is relatively inconvenient. Summary of the Utility Model

[0004] In view of this, the utility model proposes a very convenient installation structure, enabling the magnifying glass assembly to be easily installed into or disassembled from the projector, and the fixing method between the magnifying glass assembly and the projector is simple and easy to operate.

[0005] The utility model proposes the following technical solutions to solve the above technical problems:

[0006] A magnifying glass assembly for a projector, comprising a magnifying glass and a mounting plate; an elastic clamping member is provided on the mounting plate, the elastic clamping member protrudes from the back surface of the mounting plate, and the elastic clamping member is used to extend into and detachably clamp in the air inlet of the front cover of the projector, so as to cover and fix the magnifying glass assembly on the front cover of the projector, and make the magnifying glass face the projection lens of the projector.

[0007] Further, fixing columns are provided on the back surface of the mounting plate, and the elastic clamping member is sleeved and fixed on the fixing columns.

[0008] Further, the elastic clamping member includes a fixing portion, a clamping portion and an extending portion connected in sequence, wherein the fixing portion is fixedly connected to the mounting plate, the extending portion is used to extend into the air inlet, and the clamping portion is used to clamp at the air inlet; the width of the extending portion is greater than the width of the clamping portion.

[0009] Further, the clamping portion and the extending portion are composed of two elastic sheets extending from the fixing portion in a direction away from the mounting plate; the two elastic sheets are arranged at intervals and the interval direction is the width direction of the elastic clamping member, and the two elastic sheets can elastically deform in the width direction.

[0010] Furthermore, the extending portion includes a connected anti-escape section and a narrowing section, the anti-escape section is connected between the narrowing section and the clamping portion, the distance between the two elastic sheets corresponding to the anti-escape section is greater than the distance between the two elastic sheets corresponding to the clamping portion, and the distance between the two elastic sheets corresponding to the narrowing section gradually decreases in the direction away from the anti-escape section.

[0011] Furthermore, the two elastic sheets are connected at the end of the narrowed section.

[0012] Furthermore, the distance between the two elastic sheets corresponding to the anti-slip section gradually increases in a direction away from the clamping portion.

[0013] Furthermore, the mounting plate is provided with a first vent and a second vent that are on the same straight line, and the elastic clip is fixedly connected between the first vent and the second vent.

[0014] Furthermore, the mounting plate is provided with a vent and a positioning column on the back, the positioning column is located at both ends of the vent in the length direction, and is used to correspondingly fit into the air inlet of the front cover of the projector to prevent the mounting plate from rotating relative to the front cover.

[0015] Furthermore, the elastic clip is an integrally formed structure.

[0016] The beneficial effects of the present invention are as follows: the magnifying glass assembly of the present invention is suitable for projectors with an air inlet on the front cover of the projector. The magnifying glass assembly is connected to the projector by an elastic clip protruding from the back of the mounting plate and extending into the air inlet. The elastic clip is then securely fastened to the air inlet by elastic deformation. During installation, the elastic clip is simply inserted into the air inlet, the magnifying glass is positioned directly against the projection lens of the projector, and the magnifying glass assembly is pressed to secure the magnifying glass assembly. During removal, the magnifying glass assembly can be simply pulled out. This method of securing the magnifying glass assembly to the projector is simple and easy to operate. Compared to manually flipping a paddle, this method is simpler, more labor-saving, and less likely to hurt fingers.

[0017] In a further technical solution of the present invention, the width of the extending portion of the elastic clip is greater than the width of the clamping portion. When the extending portion extends into the air inlet of the front cover of the projector, the air inlet of the front cover of the projector can be clamped at the position of the narrower clamping portion, and the wider extending portion extends into the interior of the projector to clamp the air inlet from the inside, preventing the elastic clip from easily falling out.

[0018] In a further technical solution of the present utility model, the extending portion first widens and then narrows in the direction away from the mounting plate. The widened part prevents the elastic clamping member from disengaging from the air inlet of the front cover after installation, and the narrowed part first enters the air inlet of the front cover during installation, making it easier for the elastic clamping member to extend into the air inlet.

[0019] In a further technical solution of the present utility model, the two elastic pieces are joined at the end of the narrowed section of the extending portion, so that the two elastic pieces are in a closed state at the end away from the mounting plate. This not only makes it easier to extend, but also further provides elastic support force at the end, improves the buckling stability, and further prevents the magnifying glass assembly from easily disengaging.

[0020] In a further technical solution of the present utility model, the elastic clamping member is fixedly connected between two ventilation openings of the mounting plate on the same straight line. In this way, after the elastic clamping member is snapped into an air inlet of a certain front cover, the two ventilation openings on the same straight line can still be opposite to the air inlet of the front cover at the corresponding position, as much as possible avoiding blocking the air inlet. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the magnifying glass assembly according to an embodiment of the present utility model.

[0022] Figure 2 is a schematic diagram of the magnifying glass assembly and a matching projector according to an embodiment of the present utility model.

[0023] Figure 3 is a schematic diagram of the magnifying glass assembly installed on the projector according to an embodiment of the present utility model.

[0024] Figure 4 is a schematic diagram of the elastic clamping member of the magnifying glass assembly according to an embodiment of the present utility model.

[0025] Figure 5 is Figure 4 a schematic diagram of the clamping connection between the elastic clamping member shown and the front cover of the projector.

[0026] Figure 6 is a schematic diagram of the clamping connection between the elastic clamping member and the front cover of the projector according to another embodiment of the present utility model.

[0027] Figure 7 is a schematic diagram of the clamping connection between the elastic clamping member and the front cover of the projector according to still another embodiment of the present utility model.

[0028] Description of the Reference Numerals: 1 - magnifying glass assembly, 11 - magnifying glass, 12 - mounting plate, 13 - ventilation opening, 14 - elastic clamping member, 15 - fixing post, 16 - positioning post; 2 - projector, 21 - projection lens, 22 - front cover, 23 - air inlet. Detailed Embodiments

[0029] The present utility model will be further described below in conjunction with the accompanying drawings, specific embodiments, and examples. The purpose of providing the examples is only for illustration and not for any limitation. The terms such as "first" and "second" are only used to distinguish components, and it should be understood that these components should not be limited by such terms. They do not inherently imply the aforementioned ordinal numbers, nor do they represent the arrangement order of one component and another component or the order in the manufacturing method.

[0030] An embodiment of the present utility model provides a magnifying glass assembly for adapting to the front cover of a projector with a strip-shaped air inlet. The magnifying glass assembly is configured to be covered and fixed on the front cover of the projector to achieve magnification of the projection image. The magnifying glass assembly can be fixed to the projection lens in a simpler and easier-to-operate fixing manner, and the disassembly method is simple.

[0031] Please refer to Figures 1 to 3 , the magnifying glass assembly 1 provided by the embodiment of the present utility model includes a magnifying glass 11 and a mounting plate 12. The magnifying glass 11 is fixed on the mounting plate 12. The entire magnifying glass assembly 2 can be covered and fixed on the front cover 22 of the projector 2 through the mounting plate 12, and the magnifying glass 11 is directly opposite to the projection lens 21 on the front cover 22 of the projector 2. A through hole matching the magnifying glass 11 is provided on the mounting plate 12 for mounting and fixing the magnifying glass 11 and at the same time providing a light path from the projection lens 21 to the magnifying glass 11. The magnifying glass 11 is a lens or a lens group with a negative refractive power. A plurality of ventilation openings 13 corresponding to the air inlet 23 on the front cover 22 of the projector are also provided on the mounting plate 12. The ventilation openings 13 are used to face the air inlet 23 on the front cover 22 to prevent the magnifying glass assembly from covering and fixing on the front cover of the projector from blocking the air inlet 23 on the front cover and affecting ventilation and heat dissipation.

[0032] Continue to refer to Figures 1 to 3 , a protruding elastic clamping member 14 is provided on the back surface of the mounting plate 12. Preferably, the number of elastic clamping members 14 is at least two. The elastic clamping member 14 is used to extend into the air inlet 23 of the front cover of the projector and be detachably clamped in the air inlet 23 of the front cover of the projector to cover and fix the magnifying glass assembly 1 on the front cover 22 of the projector and align the magnifying glass 11 with the projection lens 21 of the projector 2. When in use, the user directly presses the magnifying glass assembly onto the front cover with an air inlet, and the elastic clamping member can extend into and be clamped in the air inlet based on its own elastic deformation to achieve fixation; when disassembling, the magnifying glass assembly can be directly pulled out.

[0033] In some specific embodiments, fixing posts 15 are provided on the back surface of the mounting plate 12. The number of the fixing posts 15 is the same as that of the elastic clamping members 14, and the elastic clamping members 14 are sleeved and fixed on the fixing posts 15. Alternatively, the elastic clamping members 14 can also be fixed on the mounting plate 12 by other known fixing methods such as hot melting and bonding, and the present utility model does not limit this.

[0034] In order to avoid the mounting plate from blocking the air inlet of the front cover as much as possible, in some preferred embodiments, among the several ventilation openings 13 formed in the mounting plate 12, there are a first ventilation opening 131 and a second ventilation opening 132 on the same straight line. The first ventilation opening 131 and the second ventilation opening 132 correspond to an air inlet on the front cover; the fixing post 15 is arranged between the first 131 and the second ventilation opening 132, and the elastic clamping member 14 is fixed on the fixing post 15. When it is snapped into the air inlet on the front cover corresponding to the first ventilation opening 131 and the second ventilation opening 132, it will not cause a large blockage to the air inlet.

[0035] Reference Figure 5 , which is a schematic diagram of the elastic clamping member 14 being snapped into the air inlet of the front cover in an embodiment. In this embodiment, the elastic clamping member 14 includes a fixing portion 141, a clamping portion 142 and an extending portion 143 connected in sequence. Among them, the fixing portion 141 is fixedly connected to the mounting plate 12, the extending portion 143 is used for extending into the air inlet of the front cover 22, and the clamping portion 142 is used for clamping at the air inlet of the front cover; the width of the extending portion 143 is greater than the width of the clamping portion 142 to prevent the elastic clamping member from easily coming out. Preferably, when there is no external force acting on the elastic clamping member 14, the width of its clamping portion 142 is less than or equal to the width of the air inlet to be snapped into; further preferably, the width of the fixing portion 141 is greater than the width of the clamping portion 142. That is to say, in Figure 4 and Figure 5 In the shown embodiment, from the fixing portion to the extending portion direction of the elastic clamping member 14, its width shows a change of wide - narrow - wide.

[0036] In some preferred embodiments, the clamping portion 142 and the extending portion 143 of the elastic clamping member 14 are composed of two elastic pieces, and these two elastic pieces extend away from the mounting plate from the fixing portion. The two elastic pieces of the elastic clamping member 14 are arranged at intervals, and the interval direction is the width direction of the elastic clamping member 14, and these two elastic pieces can undergo elastic deformation in this width direction.

[0037] Reference Figure 6In a further preferred embodiment, the extending portion 143 of the elastic clamping member 14 includes a connected anti-escape section 1431 and a narrowing section 1432, the anti-escape section 1431 is connected between the narrowing section 1432 and the clamping portion 142, and the distance between the two elastic sheets corresponding to the anti-escape section 1431 is greater than the distance between the two elastic sheets corresponding to the clamping portion 142, so that when the clamping portion 142 is located in the air inlet of the front cover of the projector and is against the side wall of the air inlet through elastic force, the anti-escape section 1431 can be buckled to the back of the air inlet to achieve anti-escape after being clamped; the distance between the two elastic sheets corresponding to the narrowing section 1432 gradually decreases in the direction away from the anti-escape section 1431, so as to facilitate extension into the air inlet during installation; the distance between the two elastic sheets corresponding to the anti-escape section 1431 gradually increases in the direction away from the clamping portion 142. In a more preferred embodiment, as Figure 7 The two elastic sheets are connected at the end of the narrowed section 1432, which makes it easier to extend into the air inlet. On the other hand, it can provide elastic support force for the elastic clip 14, improve the stability of the clip, and further prevent the magnifying glass assembly from easily falling out of the air inlet.

[0038] refer to Figure 1 In other embodiments, a plurality of positioning posts 16 are further provided on the back of the mounting plate 12. The positioning posts 16 are preferably avoided in the center area of the mounting plate and are preferably located at one or both ends of the length direction of the different vents 13 of the mounting plate, so as to be correspondingly inserted into the air inlet of the front cover of the projector to prevent the mounting plate from rotating relative to the front cover.

[0039] In some specific embodiments, the elastic clip is an integrally formed structure and the material may be metal, but this is only exemplary and the present invention does not limit this.

[0040] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, it is possible to make several equivalent substitutions or obvious modifications without departing from the concept of the present invention, and the performance or use are the same, and all of them should be considered to fall within the scope of protection of the present invention.

Claims

1. A magnifying glass component for a projector, characterized in that: It includes a magnifying glass and a mounting plate; an elastic clamping member is provided on the mounting plate, and the elastic clamping member protrudes from the back surface of the mounting plate. The elastic clamping member is used to extend into and detachably clamp in the air inlet of the front cover of the projector, so as to cover and fix the magnifying glass assembly on the front cover of the projector, and align the magnifying glass with the projection lens of the projector.

2. The magnifying glass component according to claim 1, characterized in that: Fixing columns are provided on the back surface of the mounting plate, and the elastic clamping member is sleeved and fixed on the fixing columns.

3. The magnifying glass assembly according to claim 1, wherein: The elastic clamping member includes a fixing part, a clamping part and an extending part connected in sequence, wherein the fixing part is fixedly connected to the mounting plate, the extending part is used to extend into the air inlet, and the clamping part is used to clamp at the air inlet; the width of the extending part is greater than the width of the clamping part.

4. The magnifying glass component according to claim 3, wherein: The clamping part and the extending part are composed of two elastic sheets extending from the fixing part in a direction away from the mounting plate; the two elastic sheets are arranged at intervals and the interval direction is the width direction of the elastic clamping member, and the two elastic sheets can elastically deform in the width direction.

5. The magnifying glass assembly according to claim 4, characterized in that: The extending part includes a non-escaping section and a narrowing section connected to each other. The non-escaping section is connected between the narrowing section and the clamping part. The distance between the two elastic sheets corresponding to the non-escaping section is greater than the distance between the two elastic sheets corresponding to the clamping part, and the distance between the two elastic sheets corresponding to the narrowing section gradually decreases along the direction away from the non-escaping section.

6. The magnifying glass component according to claim 5, characterized in that: The two elastic sheets are joined at the end of the narrowing section.

7. The magnifying glass assembly according to claim 5, wherein The distance between the two elastic sheets corresponding to the non-escaping section gradually increases along the direction away from the clamping part.

8. The magnifying glass assembly according to claim 1, characterized in that: The mounting plate is provided with a first ventilation opening and a second ventilation opening on the same straight line, and the elastic clamping member is fixedly connected between the first ventilation opening and the second ventilation opening.

9. The magnifying glass assembly according to claim 1, characterized in that: The mounting plate is provided with a ventilation opening and positioning columns are also provided on the back surface. The positioning columns are located at both ends in the length direction of the ventilation opening and are used to correspondingly snap into the air inlet of the front cover of the projector to prevent the mounting plate from rotating relative to the front cover.

10. The magnifying glass assembly according to claim 1, characterized in that: The elastic clamping member is an integrally formed structure.

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