Projection lens switching rotation adjusting mechanism

Abstract

The utility model relates to the technical field of projection, in particular to a projection lens adapter rotation adjusting mechanism, which comprises a projection lens connecting flange, an adapter ring penetrated and connected by the projection lens connecting flange, a projector connecting flange in sliding connection with the adapter ring, and a spring piece for connecting the projection lens connecting flange and the adapter ring, the projector connecting flange is connected with the projector; a through groove hole is formed in the adapter ring, the spring piece is in an S shape, two through holes are formed in one end of the spring piece, the spring piece fixing screw fixes the spring piece on the surface of the adapter ring through the through holes in the spring piece, and the other end of the spring piece is clamped in the through groove hole in the adapter ring. The utility model can be used for various different projectors, and can also be used for various lenses with different projection ratio sections, so that the interchangeability of the projectors and the lenses is increased; the lens is simpler and more convenient to install and easier to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of projection, in particular to a projection lens switching rotation adjustment mechanism. Background Art

[0002] The standard lens of the projector has a fixed and limited projection ratio, which results in a limited projection screen size. Sometimes we need to project a small screen at a long distance, or a large screen at a short distance. At this time, we need to replace lenses with different projection ratios. The existing projection lens transfer rotation adjustment mechanism cannot effectively meet the needs of quickly disassembling different lenses. In order to facilitate the replacement and easy disassembly of different lenses and increase the interchangeability of lenses and projectors, the utility model provides a good solution. Utility Model Content

[0003] The purpose of the utility model is to provide a projection lens transfer rotation adjustment mechanism to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides a projection lens adapter rotation adjustment mechanism, including: a projection lens connecting flange, an adapter ring penetrated and connected by the projection lens connecting flange, a projector connecting flange slidably connected to the adapter ring, and a spring sheet connecting the projection lens connecting flange and the adapter ring, wherein the projector connecting flange is connected to the projector.

[0005] Preferably, the adapter ring is provided with a through slot, the spring sheet is in an "S" shape, one end of the spring sheet is provided with two through holes, the spring sheet fixing screw fixes the spring sheet to the surface of the adapter ring through the through holes on the spring sheet, and the other end of the spring sheet is stuck in the through slot on the adapter ring.

[0006] Preferably, the inner surface of the end of the adapter ring connected to the projection lens connection flange is provided with a plurality of female baffles evenly distributed around the circumference, and the end of the projection lens connection flange connected to the connection ring is provided with a plurality of male baffles corresponding to the positions of the female baffles, and the number of the female baffles is the same as the number of the male baffles;

[0007] A card slot is provided on any one of the male baffles on the projection lens connecting flange. When the adapter ring is connected to the projection lens connecting flange, the end of the spring sheet stuck in the slot passing through the adapter ring is simultaneously stuck in the card slot provided on the male baffle of the projection lens connecting flange.

[0008] In the present utility model, the projection lens connecting flange is connected to the lens. The projection lens can be installed inside the adapter ring through the projection lens connecting flange. When in use, by rotating the lens clockwise, the spring piece can be clamped into the groove inside the projection lens connecting flange, so that the spring piece radially presses the projection lens connecting flange. The projection lens can rotate relative to the projector connecting flange and also has a certain axial displacement.

[0009] Preferably, when the adapter ring is connected to the projector connecting flange, the end of the adapter ring at the connection is nested into the end of the projector connecting flange at the connection. A plurality of wire grooves are provided on the end of the adapter ring at the connection, and an isolation column is provided in each wire groove;

[0010] A plurality of countersunk cylindrical holes corresponding to the positions of the wire grooves are provided on the end of the projector connecting flange at the connection. The isolation column connecting screw is threadedly connected to the isolation column through the countersunk cylindrical hole of the projector connecting flange.

[0011] In the present utility model, the projector connecting flange is connected to the projector, and the other side of the projector connecting flange is axially slidably connected to the adapter ring; the isolation column is installed inside the wire groove of the adapter ring, and the isolation column connecting screw is threadedly connected to the isolation column through the countersunk cylindrical hole of the projector connecting flange, so that the adapter ring can rotate relative to the projector connecting flange.

[0012] Preferably, the number of the isolation column connecting screws corresponds to the number of the isolation columns one by one.

[0013] The beneficial technical effects achieved by the present utility model: The present utility model can be used for a variety of different projectors and also for lenses with a variety of different projection ratio segments, increasing the interchangeability of projectors and lenses; the lens installation is simpler and more convenient, and the operation is easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram after the installation of the projection lens adapter rotation adjustment mechanism of the present utility model;

[0015] Figure 2 is a schematic structural disassembling diagram of the connection between the projection lens connecting flange and the adapter ring in the projection lens adapter rotation adjustment mechanism of the present utility model;

[0016] Figure 3 is a schematic structural disassembling diagram of the connection between the adapter ring and the projector connecting flange in the projection lens adapter rotation adjustment mechanism of the present utility model;

[0017] Figure 4 is a schematic structural disassembling diagram of the adapter ring in the projection lens adapter rotation adjustment mechanism of the present utility model;

[0018] In the figure, 1 is the projection lens connecting flange; 11 is the male head retaining piece; 12 is the card slot; 2 is the adapter ring; 21 is the slot hole; 22 is the female head retaining piece; 23 is the wire groove; 3 is the projector connecting flange; 31 is the cylindrical counterbore; 4 is the spring piece; 41 is the through hole; 5 is the isolation post; 6 is the isolation post connecting screw; 7 is the spring piece fixing screw. Detailed implementation mode

[0019] The following further describes the present utility model in conjunction with specific embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and cannot be used to limit the protection scope of the present utility model.

[0020] The present utility model patent will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] As Figure 1 shown, the projection lens adapter rotation adjustment mechanism includes: a projection lens connecting flange 1, an adapter ring 2 penetrated and connected by the projection lens connecting flange 1, a projector connecting flange 3 slidably connected to the adapter ring 2, and a spring piece 4 connecting the projection lens connecting flange 1 and the adapter ring 2, and the projector connecting flange 3 is connected to the projector.

[0022] As Figures 2 to 4 shown, the adapter ring 2 is provided with a through slot hole 21, the spring piece 4 is in an "S" shape, one end of the spring piece 4 is provided with two through holes 41, and the spring piece fixing screw 7 fixes the spring piece 4 on the surface of the adapter ring 2 through the through holes 41 on the spring piece 4, and the other end of the spring piece 4 is stuck inside the through slot hole 21 on the adapter ring 2.

[0023] On the inner surface of the end of the adapter ring 2 connected to the projection lens connecting flange 1, a plurality of female head retaining pieces 22 are arranged in a circumferentially uniform distribution, and on the end of the projection lens connecting flange 1 connected to the connecting ring 2, a plurality of male head retaining pieces 11 corresponding to the positions of the female head retaining pieces 22 are arranged, and the number of the female head retaining pieces 22 is the same as the number of the male head retaining pieces 11;

[0024] On any one of the male head retaining pieces 11 on the projection lens connecting flange 1, a card slot 12 is provided. When the adapter ring 2 is connected to the projection lens connecting flange 1, the end of the spring piece 4 stuck inside the through slot hole 21 on the adapter ring 2 is simultaneously stuck in the card slot 12 provided on the male head retaining piece 11 of the projection lens connecting flange 1.

[0025] When the adapter ring 2 is connected to the projector connecting flange 3, the end of the connection part of the adapter ring 2 is nested into the end of the connection part of the projector connecting flange 3, and a plurality of wire grooves 23 are provided on the end of the connection part of the adapter ring 2, and an isolation post 5 is arranged in each wire groove 23;

[0026] The end of the projector connection flange 3 is provided with a plurality of cylindrical countersunk holes 31 corresponding to the positions of the wire grooves 23 , and the isolation column connection screws 6 are threadedly connected to the isolation column 5 through the cylindrical countersunk holes 31 of the projector connection flange 3 .

[0027] The number of the isolation column connecting screws 6 corresponds to the number of the isolation columns 5 .

[0028] Working principle: the projection lens connecting flange 1 is connected to different lenses, and the projector connecting flange 3 is connected to different projectors.

[0029] When installing the lens, align the lens and the lens connection flange 1 with the groove where the female baffle 22 in the adapter ring 2 is located, and install it toward the inside of the projector. Rotate the lens clockwise, the lens connection flange contacts the spring sheet 4, and the spring sheet pops up. Continue to rotate the lens clockwise with force, and the spring sheet 4 will be stuck in the slot 12 of the projection lens connection flange 1 and contact the spring sheet fixing screw 7. The spring sheet fixing screw 7 will also play a limiting role, so that the spring sheet will press the lens and the projection lens connection flange 1. When rotating and adjusting the lens, the rotating lens can drive the adapter ring 2 to rotate relative to the projector connection flange 3 by an angle of ±18°. The rotation will also drive the projection lens and the adapter ring 2 to axially move the axial range of ±0.5mm. The overall front and rear position of the lens can be adjusted through axial forward and backward movement. When removing the lens, you only need to rotate the lens counterclockwise. When the adapter ring 2 is rotated to the limit relative to the projector connecting flange 3, continue to rotate the lens counterclockwise with force, and the spring sheet will pop up. When it is rotated to the position where the female baffle 22 in the adapter ring 2 is completely offset from the male baffle of the corresponding lens, the lens can be removed.

[0030] The structures involved in the lens interchange and conversion process include: projection lens connection flange 1, adapter ring 2, spring sheet 4 and spring sheet fixing screw 7. Different lenses can be installed with the projection lens connection flange 1 of the same bayonet shape. The lens connection flange is installed in the groove where the female baffle 22 in the adapter ring 2 is located. The lens is rotated clockwise. When the flange contacts the spring sheet 4, the spring sheet 4 pops up. The lens continues to be rotated. The spring sheet 4 will be stuck in the slot 12 of the projection lens connection flange 1. At the same time, the projection lens connection flange 1 will contact the spring sheet fixing screw 7, which will not cause the lens to rotate too far. The spring sheet fixing screw 7 will also play a limiting role, so that the spring sheet 4 will press the projection lens connection flange 1 and the lens. When the lens needs to be removed, it only needs to be rotated counterclockwise. When the adapter ring 2 is rotated to the limit relative to the projector connection flange 3, the lens is continued to be rotated counterclockwise with force. The spring sheet pops up. When the female baffle 22 in the adapter ring 2 is completely offset from the male baffle of the corresponding lens, the lens can be removed.

[0031] The structures involved in the process of lens rotation adjustment include: an adapter ring 2, a projector connection flange 3, a spring piece 4, an isolation column 5, and an isolation column connection screw 6. When rotating and adjusting the lens, rotating the lens can drive the adapter ring 2 to rotate relative to the projector connection flange 3 by a rotation angle of ±18°, and at the same time of rotation, it will drive the projection lens and the adapter ring 2 to move axially with an axial movement range of ±0.5 mm. The overall front and back position of the lens can be adjusted by moving axially forward and backward.

[0032] The present utility model has been disclosed in a preferred embodiment, but it is not intended to limit the present utility model. Any technical solution obtained by adopting an equivalent replacement or equivalent transformation scheme falls within the protection scope of the present utility model.

Claims

1. Projection lens adapter rotation adjustment mechanism, characterized in that, Comprising: A projection lens connecting flange (1), an adapter ring (2) penetrated and connected by the projection lens connecting flange (1), a projector connecting flange (3) slidably connected to the adapter ring (2), and a spring piece (4) connecting the projection lens connecting flange (1) and the adapter ring (2), wherein the projector connecting flange (3) is connected to the projector; A through slot (21) is provided on the adapter ring (2). The spring piece (4) is in an "S" shape. Two through holes (41) are provided at one end of the spring piece (4). A spring piece fixing screw (7) fixes the spring piece (4) on the surface of the adapter ring (2) through the through holes (41) on the spring piece (4). The other end of the spring piece (4) is stuck inside the through slot (21) on the adapter ring (2).

2. The projection lens adapter rotation adjustment mechanism according to claim 1, wherein On the inner surface of the end of the adapter ring (2) connected to the projection lens connecting flange (1), a plurality of female head stoppers (22) evenly distributed in a circle are provided. On the end of the projection lens connecting flange (1) connected to the adapter ring (2), a plurality of male head stoppers (11) corresponding to the positions of the female head stoppers (22) are provided. The number of the female head stoppers (22) is the same as the number of the male head stoppers (11); A card slot (12) is provided on any one of the male head stoppers (11) on the projection lens connecting flange (1). When the adapter ring (2) is connected to the projection lens connecting flange (1), the end of the spring piece (4) stuck inside the through slot (21) on the adapter ring (2) is simultaneously stuck inside the card slot (12) provided on the male head stopper (11) of the projection lens connecting flange (1).

3. The projection lens adapter rotation adjustment mechanism according to claim 1, wherein When the adapter ring (2) is connected to the projector connecting flange (3), the end of the connection part of the adapter ring (2) is nested into the end of the connection part of the projector connecting flange (3). A plurality of wire grooves (23) are provided on the end of the connection part of the adapter ring (2), and an isolation post (5) is provided in each wire groove (23); On the end of the connection part of the projector connecting flange (3), a plurality of cylindrical countersunk holes (31) corresponding to the positions of the wire grooves (23) are provided. An isolation post connecting screw (6) is threadedly connected to the isolation post (5) through the cylindrical countersunk hole (31) of the projector connecting flange (3).

4. The projection lens adapter rotation adjustment mechanism according to claim 3, characterized in that, The number of the isolation post connecting screws (6) corresponds to the number of the isolation posts (5) one by one.

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