DMD left and right flat field adjusting structure

Abstract

The utility model discloses a DMD left and right flat field adjusting structure, which comprises a fixed seat, a DMD mounting seat arranged on the end surface of the fixed seat, an adjusting assembly mounted at each corner of the DMD mounting seat, and the end part of the adjusting assembly is propped against the fixed seat and is used for adjusting the distance between the DMD mounting seat and the fixed seat. The fixing seat and the DMD mounting seat are fixed through a plurality of fixing screws; in the adjusting process, due to the fact that a plurality of tensioning assemblies matched with the adjusting assemblies exist, the effect of limiting the position of the DMD installation base can be achieved, the DMD installation base cannot deviate left and right after a fixing screw is unscrewed, re-alignment is not needed, the fixing screw is tightened for fixing after adjustment is completed, and the DMD installation base is convenient to use. No moving space exists between the DMD mounting seat and the fixed seat, so that the position between the DMD mounting seat 12 and the fixed seat cannot be changed even if interference such as vibration occurs outside, and the DMD mounting seat is very stable.

Description

Technical Field

[0001] This utility model belongs to the field of optical lens adjustment structure technology, specifically a DMD left and right flat field adjustment structure. Background Technology

[0002] The DMD chip is the foundation of DLP technology. DLP projection technology uses the DMD chip as a key component to achieve digital optical processing. Traditionally, once a DMD chip is installed, its angle cannot be adjusted, thus requiring high precision in processing and assembly. To address this issue, current mounting bases incorporate adjustment mechanisms, such as those described in the publicly available technical document "CN215986859U, DMD Chip Angle Adjustment Device and DMD Light Modulation Device." By adjusting the length of one or more adjustment rods, the distance between the first and second support plates changes, thereby altering the tilt angle between the first and second support plates. The first support plate then moves the DMD chip to change its tilt angle, achieving DMD chip angle adjustment.

[0003] In the above technical solution, elastic components are used as supports. If the first and second support plates are disturbed by external factors, they will float, causing the system to become unstable. Therefore, another adjustment structure is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a DMD left and right flat field adjustment structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A DMD left and right leveling adjustment structure includes a fixed base, a DMD mounting base is provided on the end face of the fixed base, and an adjustment component is installed at each corner of the DMD mounting base. The end of the adjustment component abuts against the fixed base and is used to adjust the distance between the DMD mounting base and the fixed base. It is fixed between the fixed base and the DMD mounting base by a number of fixing screws.

[0007] The adjustment assembly includes a nut seat fixed on the DMD mounting base, the nut seat is threaded with an adjustment screw, one end of the adjustment screw extends through the nut seat and abuts against the DMD mounting base and the fixed base, and a tensioning assembly is provided between the DMD mounting base and the fixed base near the position of each adjustment assembly.

[0008] In a further technical solution, the end of the adjusting screw away from the fixed seat is provided with a striped handle.

[0009] In a further technical solution, the tensioning assembly includes a tension spring placed between the DMD mounting base and the fixed base. The fixed base has a fixing rod one for connecting to one end of the tension spring, and the DMD mounting base has a fixing rod two for connecting to the other end of the tension spring.

[0010] In a further technical solution, the end face of the fixed seat is provided with a plurality of rolling elements corresponding to the position of the adjusting screw, and the end of the adjusting screw is hemispherical and placed between the plurality of rolling elements, and both are made of the same material.

[0011] In a further technical solution, the DMD mounting base is provided with a mounting position, which is larger than the area of ​​the DMD chip. Two inwardly extending spring arms are provided on two sides of the mounting position, and the two sides are arranged adjacent to each other.

[0012] The beneficial effects of this utility model are:

[0013] During the adjustment process, this invention features several tensioning components that match the adjustment assembly, effectively limiting the position of the DMD mounting base. Even after loosening the fixing screws, it will not shift left or right, eliminating the need for realignment. After adjustment, the fixing screws are tightened for fixation. Because the adjusted screws already define the position between the DMD mounting base and the fixed base, the distance between them remains unchanged even after the fixing screws are tightened. Furthermore, there is no room for movement between the DMD mounting base and the fixed base after tightening the screws, ensuring stability even in the event of external vibrations or other disturbances.

[0014] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0015] Figure 1 : A three-dimensional structural diagram of this utility model.

[0016] Figure 2 Disassembly diagram of this utility model.

[0017] Figure 3 : A structural diagram of the spring arm of this utility model.

[0018] Reference numerals: 11-Fixed base, 12-DMD mounting base, 121-Mounting position, 122-Spring arm, 13-DMD chip, 14-Adjusting assembly, 141-Nut seat, 142-Adjusting screw, 143-Striped handle, 144-Rolling element, 15-Fixing screw, 16-Tensioning assembly, 161-Tension spring, 162-Fixing rod two. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Please refer to Figure 1-3 ;

[0021] The adjustment structure described in this utility model aims to more stably adjust the angle of the DMD mounting base 12 and improve its resistance to external interference. Specifically, it includes a fixed base 11, with the DMD mounting base 12 located on the end face of the fixed base 11. In this embodiment, the fixed base 11 can be a part of the projection shell or an additional component installed on the projection shell, as long as it can connect to the DMD mounting base 12, which is not limited here. Each corner of the DMD mounting base 12 is equipped with an adjustment component 14. It should be noted that the shape of the DMD mounting base 12 varies depending on the actual installation situation. The most common shape is rectangular, so it will have four corners, and each of these four corners is equipped with an adjustment component 14. This design allows the DMD mounting base 12 to have more adjustment freedom and a wider adjustment range. The end of the adjustment component 14 abuts against the fixed base 11 and is fixed between the fixed base 11 and the DMD mounting base 12 by several fixing screws 15.

[0022] Furthermore, the adjustment assembly 14 includes a nut seat 141 fixed on the DMD mounting base 12. The nut seat 141 is threadedly connected to an adjustment screw 142. One end of the adjustment screw 142 passes through the nut seat 141 and extends out of the DMD mounting base 12 to abut against the fixed base 11. At the position close to each adjustment assembly 14, a tensioning assembly 16 is provided between the DMD mounting base 12 and the fixed base 11.

[0023] First, the DMD chip 13 is fixed to the DMD mounting base 12. Then, the DMD mounting base 12 is locked to the fixed base 11 by several fixing screws 15. Preferably, the number of fixing screws 15 is the same as the number of adjusting components 14, and they are all located close to the adjusting components 14. In this state, the DMD mounting base 12 and the fixed base 11 are in a tight fit and have not been adjusted. When it is necessary to adjust the angle of the DMD mounting base 12, several fixing screws 15 need to be loosened first to allow the DMD mounting base 12 to move. However, due to the limitation of the tensioning component 16, even if the fixing screws 15 are loosened, the DMD mounting base 12 will still remain close to the fixed base. However, only an external force needs to be applied to the DMD mounting base 12 to make it move relative to the fixed base 11. Then, the four adjusting components 14 are adjusted individually according to the actual situation, more specifically by turning the adjusting screws 14. 2. The DMD mounting base 12 can be positioned at different distances from the corners of the mounting base 12 and the fixing base 11, thus achieving various tilt angles for the DMD chip 13 to meet different usage requirements. During adjustment, the presence of four tensioning components 16 that match the adjustment component 14 effectively limits the position of the DMD mounting base 12. Loosening the fixing screw 15 will not cause it to shift left or right, eliminating the need for realignment. After adjustment, the fixing screw 15 is tightened for fixation. Since the adjusted screw 142 has already defined the position between the DMD mounting base 12 and the fixing base 11, the distance between them will not change even after the fixing screw 15 is tightened. Moreover, after tightening the fixing screw 15, there is no room for movement between the DMD mounting base 12 and the fixing base 11. Therefore, even if external vibrations or other interference occur, the position between the DMD mounting base 12 and the fixing base 11 will not change, making it very stable.

[0024] It should be noted that the adjustment of the position of the DMD mounting base 12 by adjusting component 14 is only a fine adjustment, so it will not deviate too much from the fixing base 11. Therefore, the hole corresponding to the fixing screw 15 will not deviate too much, and the tightening and fixing effect can still be achieved. Alternatively, the through hole for the fixing screw 15 to pass through on the DMD mounting can be set to be larger, so that the fixing screw 15 can also be finely adjusted according to the specific position.

[0025] In this embodiment of the present invention, the end face of the fixed base 11 is provided with a plurality of rolling elements 144 corresponding to the position of the adjusting screw 142. These rolling elements 144 can be horizontally placed cylinders or spheres. The end of the adjusting screw 142 is hemispherical and is placed among the rolling elements 144, and both are made of the same material. After the DMD mounting base 12 and the fixed base 11 are adjusted, there will be a gap between them. During the rotation of the adjusting screw 142, friction will be generated and metal shavings will be produced. These metal shavings will fall into the projection box and affect the reflection. In this embodiment, when the adjusting screw 142 is rotated, it will generate slight rolling friction with the rolling elements 144, and the contact area is small, which greatly reduces the friction. Moreover, since both are made of the same material, the generation of metal shavings is greatly reduced.

[0026] In this embodiment of the present invention, the adjusting screw 142 can be turned by using an external tool, such as a hex wrench, or the end of the adjusting screw 142 away from the fixed base 11 is provided with a striped handle 143, so that the position of the adjusting screw 142 can be directly adjusted by pinching the striped handle 143.

[0027] In one embodiment of the tensioning assembly 16 of this utility model, a tension spring 161 is specifically placed between the DMD mounting base 12 and the fixed base 11. More specifically, a channel for accommodating the tension spring 161 is formed between the DMD mounting base 12 and the fixed base 11, so that the tension spring 161 will not affect the space between the DMD mounting base 12 and the fixed base 11. The fixed base 11 is provided with a fixing rod 1 for connecting to one end of the tension spring 161, and the DMD mounting base 12 is provided with a fixing rod 2 162 for connecting to the other end of the tension spring 161.

[0028] In this embodiment of the present invention, the DMD mounting base 12 is provided with a mounting position 121, which is larger than the area of ​​the DMD chip 13. Two inwardly extending spring arms 122 are provided on two sides of the mounting position 121, and the two sides are arranged adjacent to each other. For example, if the mounting position 121 is square, then one spring arm 122 is located on the bottom side and the other spring arm 122 is located on the side. When the DMD chip 13 enters the mounting position 121, the two spring arms 122 push the DMD chip 13 towards the other two spring arms 122 and bring them closer together to make up for the tolerance between the parts and prevent shaking.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A DMD left and right flat field adjustment structure, characterized in that: Includes a fixed base (11), and a DMD mounting base (12) is provided on the end face of the fixed base (11). An adjustment component (14) is installed at each corner of the DMD mounting base (12). The end of the adjustment component (14) abuts against the fixed base (11) and is used to adjust the distance between the DMD mounting base (12) and the fixed base (11). It is fixed between the fixed base (11) and the DMD mounting base (12) by a number of fixing screws (15). The adjustment assembly (14) includes a nut seat (141) fixed on the DMD mounting base (12), the nut seat (141) is threaded with an adjustment screw (142), one end of the adjustment screw (142) extends through the nut seat (141) out of the DMD mounting base (12) and abuts against the fixed base (11), and a tensioning assembly (16) is provided between the DMD mounting base (12) and the fixed base (11) near each adjustment assembly (14).

2. The DMD left and right flat field adjustment structure according to claim 1, characterized in that: The adjusting screw (142) has a striped handle (143) at the end away from the fixed seat (11).

3. The DMD left and right flat field adjustment structure according to claim 1, characterized in that: The tensioning assembly (16) includes a tension spring (161) placed between the DMD mounting base (12) and the fixed base (11). The fixed base (11) is provided with a fixing rod one for connecting to one end of the tension spring (161), and the DMD mounting base (12) is provided with a fixing rod two (162) for connecting to the other end of the tension spring (161).

4. The DMD left and right flat field adjustment structure according to claim 3, characterized in that: The fixed base (11) has several rolling elements (144) on its end face corresponding to the position of the adjusting screw (142). The end of the adjusting screw (142) is hemispherical and is placed between the rolling elements (144), and both are made of the same material.

5. The DMD left and right flat field adjustment structure according to claim 1, characterized in that: The DMD mounting base (12) is provided with a mounting position (121), which is larger than the area of ​​the DMD chip (13). Two inwardly extending spring arms (122) are provided on two sides of the mounting position (121), and the two sides are arranged adjacent to each other.

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