Lens mounting mechanism and projection equipment

Abstract

The present invention relates to the field of lens technology, specifically to a lens mounting mechanism and projection equipment, including a lens mounting mechanism for lens structure installation; the lens mounting mechanism includes a housing, an eccentric wheel arranged inside the housing, a slide seat, a slide plate and a push plate; the housing is provided with a mounting groove, a docking groove and a through-connection groove, the eccentric wheel is provided with a rotating shaft rotatably connected to the inner wall of the mounting groove, the push plate is slidably arranged in the mounting groove, and a locking rod is provided on the side of the push plate away from the slide seat, which passes through the through-connection groove and extends to the inside of the docking groove and abuts against the insertion rod, a shaft is fixedly installed on the side of the slide plate close to the push plate, and a roller is rotatably installed on the other end of the shaft, and a slide groove adapted to the roller is provided inside the push plate; the lens mounting mechanism also includes a driving member arranged on the docking groove and extending to the inside of the mounting groove for driving the eccentric wheel. The present invention has the advantages of convenient disassembly and assembly, compact structure and easy use.

Description

Technical Field

[0001] The invention relates to a lens installation mechanism and a projection device, in particular to a lens installation mechanism and a projection device, belonging to the technical field of lenses. Background Art

[0002] In film and television, lens has two meanings. One refers to the optical component used by movie cameras and projectors to generate images. The other refers to a continuous picture shot from the time the camera is turned on to the time it is turned off, or the segment between two editing points, also called a lens.

[0003] At present, the lens mounting mechanism is installed on the projection equipment through multiple sets of bolts. Although this installation method is simple and direct, it does have some defects; for example, the installation using multiple sets of bolts requires a lot of time and effort, especially when working at high altitudes or when precise alignment is required, the installation process is more cumbersome. Easy to loosen and damage: Bolt connections are prone to loosening due to factors such as vibration and temperature changes during long-term use, which in turn affects the stability of the lens and the projection quality. The bolts themselves may also be damaged due to frequent tightening or disassembly, increasing maintenance costs. Accuracy and positioning issues: The installation method with multiple sets of bolts may have certain difficulties in precision control, especially when the lens position needs to be fine-tuned, and the slight loosening of the bolts may cause the projection image to shift.

[0004] Therefore, it is urgent to improve the lens mounting mechanism to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a lens mounting mechanism which has the advantages of convenient assembly and disassembly, compact structure and ease of use, and effectively solves the above-mentioned problems.

[0006] In order to achieve the above-mentioned object, the main technical solutions adopted by the present invention include: a lens mounting mechanism, including a lens mounting mechanism for mounting a lens structure;

[0007] A ring sleeve is installed on the outside of the lens structure, and an insert rod that matches the lens installation mechanism is fixedly connected to the outer surface of the ring sleeve;

[0008] The lens mounting mechanism comprises a shell, an eccentric wheel, a sliding seat, a sliding plate and a push plate arranged inside the shell; a mounting groove, a docking groove and a through-connection groove are provided inside the shell; a rotating shaft rotatably connected to the inner wall of the mounting groove is installed inside the eccentric wheel; the push plate is slidably arranged in the mounting groove, and a locking rod penetrating the through-connection groove and extending to the inside of the docking groove and abutting against the insertion rod is installed on the side of the push plate away from the sliding seat; a shaft rod is fixedly installed on the side of the sliding plate close to the push plate, and a roller is rotatably installed on the other end of the shaft rod; a sliding groove adapted to the roller is provided inside the push plate, and the roller is rollingly matched with the sliding groove; a positioning piece is provided on the upper surface of the sliding seat;

[0009] The positioning member includes an extension shaft fixedly mounted on the upper surface of the slide seat and a second spring, and the other end of the second spring is fixed to the top wall of the mounting groove, a knob is rotatably mounted on the top end of the extension shaft, and two symmetrically arranged clamping rods are welded on the outer surface of the knob;

[0010] The lens mounting mechanism also includes a driving member arranged on the docking groove and extending into the interior of the mounting groove for driving the eccentric wheel, the driving member includes an abutment plate elastically reciprocatingly arranged in the docking groove, a toothed plate slidably arranged in the docking groove and extending into the interior of the mounting groove, a connecting rod fixedly installed on the lower surface of the abutment plate, an extrusion wheel rotatably installed at the bottom end of the connecting rod, an arc-shaped abutment plate fixedly installed on one end of the toothed plate close to the docking groove, and a gear fixedly installed on the other end of the rotating shaft and meshing with the toothed plate, the extrusion wheel is rollingly connected to the outer surface of the arc-shaped abutment plate;

[0011] When the tooth plate is displaced and meshes with the gear, the eccentric wheel is driven to rotate through the rotating shaft. The rotation of the eccentric wheel contacts the outer surface of the slide seat and drives the slide plate to displace. The two push plates move outward through the rolling cooperation of the roller and the slide groove. At this time, the locking rod is inserted into the insertion rod to achieve the initial fixation of the lens structure.

[0012] Preferably, the insertion rod extends into the docking groove and abuts against the outer surface of the abutment plate, and an inspection shell is bolted to the outer surface of the shell.

[0013] Preferably, the left and right sides of the through-connection groove are respectively connected to the installation groove and the docking groove, and a locking groove with a long strip shape is opened inside the insertion rod. The locking rod passes through the through-connection groove and extends into the docking groove and abuts against the inner wall of the locking groove to achieve locking and fixation of the insertion rod.

[0014] Preferably, the outer surface of the eccentric wheel abuts against one side of the slide seat, the mounting groove is located in the middle of the shell, and the outer shape of the mounting groove is an inverted convex shape.

[0015] Preferably, a guide groove is provided inside the installation groove, and a guide block slidably matched with the guide groove is installed on the side wall of the push plate.

[0016] Preferably, the number of the push plates and the number of the slide plates are both two, and the two push plates and the two slide plates are symmetrically arranged, the number of the shaft rods and the number of the rollers are both four, and the four rollers are symmetrically arranged on the outer surfaces of the two slide plates, and the four rollers are respectively rollingly connected to the inner sides of the two slide grooves.

[0017] Preferably, a telescopic hole is opened between the docking groove and the installation groove, the tooth plate passes through the telescopic hole and extends into the installation groove, and a first limiting rod extending into the shell is installed on one side of the arc-shaped abutment plate close to the docking groove.

[0018] Preferably, there are two docking grooves, and the two docking grooves are symmetrically arranged on the left and right sides of the mounting groove, and an elastic guide component is provided on the inner wall of the docking groove close to the arc-shaped abutment plate. The elastic guide component includes a mounting platform fixedly installed on the inner wall of the docking groove, a second limiting rod fixedly installed on the lower surface of the abutment plate and passing through the inside of the mounting platform, and a first spring surrounding the outer surface of the second limiting rod is fixedly installed between the mounting platform and the abutment plate.

[0019] Preferably, the shell is provided with a through hole and an extension groove connected to the installation groove and the outer surface, the number of the extension grooves is two, and the two extension grooves are symmetrically arranged outside the through hole, and the shell is provided with two storage grooves arranged opposite to the two extension grooves, and the clamping rod is adapted to the extension groove and the storage groove.

[0020] The present invention also proposes a projection device including the above-mentioned lens mounting mechanism, wherein the projection device includes a projector, a fixing groove for mounting the lens mounting mechanism is provided inside the projector, the housing bolts are installed in the fixing groove, and the lens structure is docked and fixed with the projector through the lens mounting mechanism.

[0021] The present invention has at least the following beneficial effects:

[0022] 1. The lens mounting mechanism has the advantages of convenient disassembly and assembly, compact structure and easy use. The abutment plate is moved downward by the insertion rod to drive the extrusion wheel. The extrusion wheel moves downward and rolls with the outer surface of the arc-shaped abutment plate to push the tooth plate. The tooth plate is displaced and meshes with the gear to drive the eccentric wheel to rotate through the rotating shaft. The rotation of the eccentric wheel abuts against the outer surface of the slide seat and drives the slide plate to displace. The slide plate is displaced by the rolling cooperation of the roller and the slide groove to move the two push plates outward. At this time, the locking rod is inserted into the insertion rod to achieve the initial fixation of the lens structure. In addition, when the slide seat is displaced, the extension shaft will extend to the outside of the shell through the through hole. The two clamping rods are rotated by the knob to correspond to the storage groove, so as to achieve the locking of the lens structure.

[0023] 2. The lens installation mechanism extends the rod into the docking groove to drive the abutment plate to move downward, and utilizes the extrusion wheel and the arc-shaped abutment plate to squeeze and cooperate to move the toothed plate, so that it meshes with the gear to drive the eccentric wheel to rotate. The eccentric wheel rotates to squeeze the slide seat, causing it to move and push the push plates on both sides to fix the lens structure. This method not only has high fixing efficiency, but also can adjust the squeezing force as needed, thereby adjusting the installation tightness of the lens structure and improving the installation effect of the lens structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a structural schematic diagram of the projector of the present invention;

[0027] Figure 3 is a structural schematic diagram of the lens structure of the present invention;

[0028] Figure 4 is a structural cross-sectional view of the lens mounting mechanism of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the skateboard of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the push plate of the present invention;

[0031] Figure 7 For the present invention Figure 4 A is a schematic diagram of the enlarged structure shown;

[0032] Figure 8 It is a schematic diagram of the structure of the gear and rack of the present invention;

[0033] Fig. 9 For the present invention Figure 4 The enlarged structural schematic diagram of B is shown;

[0034] Fig.10 It is a schematic diagram of the structure of the extension groove and the through hole of the present invention.

[0035] In the figure, 1, projector; 2, lens structure; 201, ring sleeve; 202, plug rod; 3, lens mounting mechanism; 4, shell; 5, mounting groove; 6, docking groove; 7, eccentric wheel; 8, slide seat; 9, slide plate; 10, push plate; 11, locking rod; 12, shaft rod; 13, roller; 14, slide groove; 15, through groove; 16, guide block; 17, guide groove; 18, abutment plate; 19, connecting rod; 20, extrusion wheel; 21, arc abutment plate; 22, tooth plate; 23, gear; 24, rotating shaft; 25, first limit rod; 26, second limit rod; 27, first spring; 28, second spring; 29, extension shaft; 30, knob; 31, clamping rod; 32, through hole; 33, extension groove; 34, storage groove. DETAILED DESCRIPTION

[0036] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0037] like Figure 1-Figure 5As shown, the lens mounting mechanism provided in this embodiment includes a lens mounting mechanism 3 for mounting a lens structure 2; the present invention also proposes a projection device including the above-mentioned lens mounting mechanism 3, the projection device includes a projector 1, a fixing groove for mounting the lens mounting mechanism 3 is arranged inside the projector 1, a housing 4 is bolted in the fixing groove, and the lens structure 2 is docked and fixed to the projector 1 through the lens mounting mechanism 3.

[0038] In this embodiment, if Figure 1 and Figure 3 As shown, a ring sleeve 201 is installed on the outside of the lens structure 2, and an insertion rod 202 that cooperates with the lens mounting mechanism 3 is fixedly connected to the outer surface of the ring sleeve 201; the insertion rod 202 is inserted into the lens mounting mechanism 3 to start the lens mounting mechanism 3, thereby installing and fixing the lens structure 2.

[0039] In this embodiment, if Figure 4-Figure 10 As shown, the lens mounting mechanism 3 includes a housing 4, an eccentric wheel 7, a slide seat 8, a slide plate 9 and a push plate 10 arranged inside the housing 4; a mounting groove 5, a docking groove 6 and a through-connection groove 15 are provided inside the housing 4, a rotating shaft 24 rotatably connected to the inner wall of the mounting groove 5 is installed inside the eccentric wheel 7, the push plate 10 is slidably arranged in the mounting groove 5, and a locking rod 11 is installed on the side of the push plate 10 away from the slide seat 8, which passes through the through-connection groove 15 and extends to the inside of the docking groove 6 and abuts against the insertion rod 202, a shaft rod 12 is fixedly installed on the side of the slide plate 9 close to the push plate 10, and a roller 13 is rotatably installed on the other end of the shaft rod 12, a slide groove 14 adapted to the roller 13 is provided inside the push plate 10, and the roller 13 and the slide groove 14 are rollingly matched, and a positioning member is provided on the upper surface of the slide seat 8; the positioning member includes an extension shaft 29 fixedly installed on the upper surface of the slide seat 8 and a first The lens mounting mechanism 3 further comprises a second spring 28, and the other end of the second spring 28 is fixed to the top wall of the mounting groove 5, a knob 30 is rotatably mounted on the top end of the extension shaft 29, and two symmetrically arranged clamping rods 31 are welded to the outer surface of the knob 30; the lens mounting mechanism 3 also includes a driving member arranged on the docking groove 6 and extending to the inside of the mounting groove 5 for driving the eccentric wheel 7, the driving member includes an abutment plate 18 elastically reciprocatingly arranged in the docking groove 6, a toothed plate 22 slidably arranged in the docking groove 6 and extending to the inside of the mounting groove 5, a connecting rod 19 fixedly mounted on the lower surface of the abutment plate 18, an extrusion wheel 20 rotatably mounted on the bottom end of the connecting rod 19, an arcuate abutment plate 21 fixedly mounted on the toothed plate 22 near one end of the docking groove 6, and a gear 23 fixedly mounted on the other end of the rotating shaft 24 and meshing with the toothed plate 22, and the extrusion wheel 20 is rollingly connected to the outer surface of the arcuate abutment plate 21.

[0040] Specifically, the insertion rod 202 extends into the docking groove 6 and abuts against the outer surface of the abutment plate 18, and the outer surface of the housing 4 is bolted with an inspection shell. The outer surface of the eccentric wheel 7 abuts against one side of the slide seat 8, and the mounting groove 5 is located in the middle of the housing 4. The shape of the mounting groove 5 is an inverted convex shape. The left and right sides of the through-connection groove 15 are connected to the mounting groove 5 and the docking groove 6 respectively. A locking groove with a long strip shape is provided inside the insertion rod 202. The locking rod 11 passes through the through-connection groove 15 and extends into the docking groove 6 and abuts against the inner wall of the locking groove to achieve the locking and fixing of the insertion rod 202. The bottom part of the mounting groove 5 is larger than the rotation range of the eccentric wheel 7.

[0041] When the present embodiment is in use, the abutment plate 18 is moved downward by the insertion rod 202 to drive the extrusion wheel 20. The extrusion wheel 20 moves downward and rolls with the outer surface of the arc-shaped abutment plate 21 to push the tooth plate 22. The tooth plate 22 is displaced and meshes with the gear 23 to drive the eccentric wheel 7 to rotate through the rotating shaft 24. The eccentric wheel 7 rotates and abuts against the outer surface of the slide seat 8 and drives the slide plate 9 to displace. The displacement of the slide plate 9 causes the two push plates 10 to move outward through the rolling cooperation of the roller 13 and the slide groove 14. At this time, the locking rod 11 is inserted into the insertion rod 202 to achieve preliminary fixation of the lens structure 2. In addition, when the slide seat 8 is displaced, the extension shaft 29 will extend to the outside of the shell 4. At this time, the two clamping rods 31 are rotated by the knob 30 to rotate them ninety degrees, thereby achieving the locking of the lens structure 2.

[0042] There are two push plates 10 and two slide plates 9, and the two push plates 10 and the two slide plates 9 are symmetrically arranged. There are four shafts 12 and four rollers 13, and the four rollers 13 are symmetrically arranged on the outer surfaces of the two slide plates 9. The four rollers 13 are respectively connected to the inner sides of the two slide grooves 14 in a rolling manner. The slide grooves 14 are arranged in an inclined shape, and the inclination directions of the two slide grooves 14 are symmetrically arranged.

[0043] By extending the insertion rod 202 into the docking groove 6, the abutment plate 18 is driven downward, and the extrusion wheel 20 and the arc-shaped abutment plate 21 are squeezed and cooperated to move the toothed plate 22, so that it engages with the gear 23 to drive the eccentric wheel 7 to rotate. The eccentric wheel 7 rotates to squeeze the slide seat 8, causing it to move and push the push plates 10 on both sides to fix the lens structure 2. In addition, through the setting of the long locking groove, this method not only has a high fixing efficiency, but also can adjust the squeezing force as needed, thereby adjusting the installation tightness of the lens structure 2 and improving the installation effect of the lens structure 2.

[0044] To ensure the stable movement of the push plate 10, Figure 7 As shown, a guide groove 17 is provided inside the mounting groove 5, and a guide block 16 is installed on the side wall of the push plate 10 to slide with the guide groove 17. The guide block 16 slides with the guide groove 17 to limit the push plate 10 so that it can move linearly, thereby improving the fixation of the lens structure 2.

[0045] In this embodiment, a telescopic hole is provided between the docking groove 6 and the mounting groove 5, the tooth plate 22 passes through the telescopic hole and extends to the inside of the mounting groove 5, and a first limiting rod 25 extending to the inside of the housing 4 is installed on one side of the arc-shaped abutting plate 21 close to the docking groove 6. The installation of the first limiting rod 25 enables the tooth plate 22 to be linearly displaced, thereby improving the meshing with the gear 23.

[0046] In this embodiment, if Fig. 9 As shown, there are two docking grooves 6, and the two docking grooves 6 are symmetrically arranged on the left and right sides of the mounting groove 5. The inner wall of the docking groove 6 close to the arc-shaped abutment plate 21 is provided with an elastic guide assembly, which includes a mounting platform fixedly mounted on the inner wall of the docking groove 6, a second limiting rod 26 fixedly mounted on the lower surface of the abutment plate 18 and penetrating the inside of the mounting platform, and a first spring 27 surrounding the outer surface of the second limiting rod 26 is fixedly mounted between the mounting platform and the abutment plate 18. The second limiting rod 26 can limit the abutment plate 18 so that it can be linearly displaced, and the first spring 27 can reset it, thereby realizing the easy disassembly and assembly of the lens structure 2.

[0047] To achieve the positioning of the lens structure 2, as Fig.10 As shown, the housing 4 is provided with a through hole 32 and an extension groove 33 connected with the mounting groove 5 and the outer surface. There are two extension grooves 33, and the two extension grooves 33 are symmetrically arranged outside the through hole 32. The housing 4 is provided with two receiving grooves 34 arranged opposite to the two extension grooves 33. The clamping rod 31 is adapted to the extension groove 33 and the receiving groove 34. When the lens structure 2 is initially fixed, the extension shaft 29 will extend to the outside of the housing 4 through the through hole 32. The two clamping rods 31 are rotated by the knob 30 to correspond to the receiving groove 34, so that the lens structure 2 can be locked. When disassembling, it is only necessary to slightly pull the extension shaft 29 and turn the knob 30 to make the clamping rod 31 correspond to the extension groove 33, loosen the pull of the extension shaft 29, and quickly disassemble the lens structure 2 through the deformation of the first spring 27 and the second spring 28.

[0048] like Figure 1-Figure 10 As shown, the principles of the lens installation mechanism and the projection device provided in this embodiment are as follows:

[0049] When the present invention is used, first insert the insertion rod 202 into the docking groove 6, at which time the insertion rod 202 abuts against the outer surface of the abutment plate 18, and then continue to move the insertion rod 202, so that the abutment plate 18 moves downward to drive the extrusion wheel 20, the extrusion wheel 20 moves downward and rolls with the outer surface of the arc-shaped abutment plate 21 and pushes the tooth plate 22 to move, the tooth plate 22 moves and meshes with the gear 23 to drive the eccentric wheel 7 to rotate through the rotating shaft 24, the eccentric wheel 7 rotates and abuts against the outer surface of the slide seat 8 and drives the slide plate 9 to move, the slide plate 9 moves through the rolling cooperation of the roller 13 and the slide groove 14 to move the two push plates 10 outward At this time, the locking rod 11 is inserted into the insertion rod 202 to achieve the initial fixation of the lens structure 2. In addition, when the slide 8 is displaced, the extension shaft 29 will extend to the outside of the shell 4 through the through hole 32. The two clamping rods 31 are rotated by the knob 30 to correspond to the storage groove 34, so that the lens structure 2 can be locked. When disassembling, it is only necessary to slightly pull the extension shaft 29 and turn the knob 30 to make the clamping rod 31 correspond to the extension groove 33, loosen the pull of the extension shaft 29, and the lens structure 2 can be quickly disassembled through the deformation of the first spring 27 and the second spring 28.

[0050] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0051] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0052] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A lens mounting mechanism, characterized in that: It includes a lens mounting mechanism (3) for mounting the lens structure (2); A ring sleeve (201) is installed on the outside of the lens structure (2), and an insertion rod (202) that matches the lens installation mechanism (3) is fixedly connected to the outer surface of the ring sleeve (201); The lens mounting mechanism (3) comprises a housing (4), an eccentric wheel (7) arranged inside the housing (4), a slide seat (8), a slide plate (9) and a push plate (10); a mounting groove (5), a docking groove (6) and a through-joint groove (15) are provided inside the housing (4); a rotating shaft (24) rotatably connected to the inner wall of the mounting groove (5) is installed inside the eccentric wheel (7); the push plate (10) is slidably arranged in the mounting groove (5), and the push plate (10) is on a side away from the slide seat (8). A locking rod (11) is installed which passes through the through-joint groove (15) and extends to the inside of the docking groove (6) and abuts against the insertion rod (202); a shaft rod (12) is fixedly installed on one side of the slide plate (9) close to the push plate (10), and a roller (13) is rotatably installed on the other end of the shaft rod (12); a slide groove (14) adapted to the roller (13) is provided inside the push plate (10); the roller (13) and the slide groove (14) are in rolling cooperation; and a positioning member is provided on the upper surface of the slide seat (8); The positioning member comprises an extension shaft (29) and a second spring (28) fixedly mounted on the upper surface of the slide seat (8), and the other end of the second spring (28) is fixed to the inner top wall of the mounting groove (5); a knob (30) is rotatably mounted on the top end of the extension shaft (29), and two symmetrically arranged clamping rods (31) are welded to the outer surface of the knob (30); The lens mounting mechanism (3) further comprises a driving member arranged on the docking groove (6) and extending into the interior of the mounting groove (5) for driving the eccentric wheel (7), the driving member comprising an abutment plate (18) elastically reciprocatingly arranged in the docking groove (6), a toothed plate (22) slidably arranged in the docking groove (6) and extending into the interior of the mounting groove (5), a connecting rod (19) fixedly mounted on the lower surface of the abutment plate (18), an extrusion wheel (20) rotatably mounted on the bottom end of the connecting rod (19), an arc-shaped abutment plate (21) fixedly mounted on one end of the toothed plate (22) close to the docking groove (6), and a fixed A gear (23) is mounted on the other end of the rotating shaft (24) and meshes with the toothed plate (22), and the extrusion wheel (20) is rollingly connected to the outer surface of the arc-shaped abutment plate (21); when the toothed plate (22) is displaced and meshes with the gear (23), the eccentric wheel (7) is driven to rotate through the rotating shaft (24), and the eccentric wheel (7) rotates and abuts against the outer surface of the slide seat (8) and drives the slide plate (9) to displace, and the two push plates (10) are moved outward through the rolling cooperation of the roller (13) and the slide groove (14), and at this time, the locking rod (11) is inserted into the insertion rod (202), thereby realizing the initial fixation of the lens structure (2).

2. A lens mounting mechanism according to claim 1, characterized in that: The insertion rod (202) extends into the docking groove (6) to abut against the outer surface of the abutment plate (18), and an inspection shell is bolted to the outer surface of the shell (4).

3. A lens mounting mechanism according to claim 1, characterized in that: The left and right sides of the through-connection groove (15) are respectively connected to the installation groove (5) and the docking groove (6); a locking groove in the shape of a long strip is provided inside the insertion rod (202); the locking rod (11) passes through the through-connection groove (15) and extends into the docking groove (6) and abuts against the inner wall of the locking groove, thereby locking and fixing the insertion rod (202).

4. The lens mounting mechanism according to claim 1, characterized in that: The outer surface of the eccentric wheel (7) abuts against one side of the slide seat (8), the mounting groove (5) is located in the middle of the housing (4), and the outer shape of the mounting groove (5) is an inverted convex shape.

5. The lens mounting mechanism according to claim 1, characterized in that: A guide groove (17) is provided inside the installation groove (5), and a guide block (16) that slidably cooperates with the guide groove (17) is installed on the side wall of the push plate (10).

6. The lens mounting mechanism according to claim 1, characterized in that: The number of the push plates (10) and the number of the slide plates (9) are both two, and the two push plates (10) and the two slide plates (9) are symmetrically arranged. The number of the shaft rods (12) and the number of the rollers (13) are both four, and the four rollers (13) are symmetrically arranged on the outer surfaces of the two slide plates (9), and the four rollers (13) are respectively rollingly connected to the inner sides of the two slide grooves (14).

7. The lens mounting mechanism according to claim 1, characterized in that: A telescopic hole is provided between the docking groove (6) and the mounting groove (5), the tooth plate (22) passes through the telescopic hole and extends into the interior of the mounting groove (5), and a first limiting rod (25) extending into the interior of the housing (4) is installed on one side of the arc-shaped abutment plate (21) close to the docking groove (6).

8. The lens mounting mechanism according to claim 1, characterized in that: The number of the docking grooves (6) is two, and the two docking grooves (6) are symmetrically arranged on the left and right sides of the mounting groove (5); an elastic guide component is arranged on the inner wall of the docking groove (6) close to the arc-shaped abutment plate (21); the elastic guide component comprises a mounting platform fixedly mounted on the inner wall of the docking groove (6), a second limit rod (26) fixedly mounted on the lower surface of the abutment plate (18) and penetrating the interior of the mounting platform; and a first spring (27) surrounding the outer surface of the second limit rod (26) is fixedly mounted between the mounting platform and the abutment plate (18).

9. The lens mounting mechanism according to claim 1, characterized in that: The shell (4) is provided with a through hole (32) and an extension groove (33) which are connected to the installation groove (5) and the outer surface. The extension grooves (33) are two in number and are symmetrically arranged outside the through hole (32). The shell (4) is provided with two receiving grooves (34) which are arranged opposite to the two extension grooves (33). The clamping rod (31) is adapted to the extension groove (33) and the receiving groove (34).

10. A projection device, characterized in that: The projection device comprises a lens mounting mechanism as claimed in any one of claims 1 to 9, wherein the projection device comprises a projector (1), wherein a fixing groove for mounting the lens mounting mechanism (3) is provided inside the projector (1), wherein the housing (4) is bolted into the fixing groove, and the lens structure (2) is docked and fixed to the projector (1) via the lens mounting mechanism (3).

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