Adjusting mechanism of mirror and laser projection device

Abstract

The application discloses an adjusting mechanism of a mirror and a laser projection device, and belongs to the technical field of projection. The adjusting mechanism can comprise a box body, a support, an adjusting rod and at least one fastener. When the position of the mirror needs to be adjusted, an operator can control each fastener to move in the corresponding adjusting slot. In this way, the fastener can drive the adjusting rod to rotate, so that the adjusting rod can drive the support to rotate, and then the mirror carried by the support can rotate synchronously with the support. In this way, the position of the mirror can be adjusted. In this way, without adopting the mode of disassembling and reassembling the mirror from the laser projection device, the position of the mirror can be adjusted only by adjusting the position of the fastener in the adjusting slot, the adjusting process of the position of the mirror is effectively simplified, and the efficiency of adjusting the position of the mirror is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of projection technology, in particular to a reflecting mirror adjusting mechanism and a laser projection device. BACKGROUND

[0002] The laser projection system comprises a projection screen and a laser projection device. The laser projection device can project a picture on the projection screen to realize video playing and other functions.

[0003] The current laser projection device usually comprises a projection lens, a light engine assembly and a light source assembly. In order to reduce the volume of the laser projection device, a reflecting mirror is usually arranged between the light source assembly and the light engine assembly. The reflecting mirror is used to reflect the laser beam provided by the light source assembly to the light engine assembly. The light engine assembly is used to modulate the laser beam by an image signal to form a modulated light beam, and the modulated light beam after modulation can be projected to the projection lens. The projection lens is used to project the modulated light beam to the projection screen.

[0004] At present, the reflecting mirror is usually fixed on the shell of the laser projection device by a plurality of screws. When the assembly error of the reflecting mirror is large, the plurality of screws for fixing the reflecting mirror need to be removed first, and then the position of the reflecting mirror is adjusted to the required position. After that, the reflecting mirror is fixed on the shell again by the plurality of screws. However, this way of adjusting the reflecting mirror is relatively complex, and the adjusting efficiency of the reflecting mirror is low. SUMMARY

[0005] The embodiments of the present application provide a reflecting mirror adjusting mechanism and a laser projection device. The technical scheme can solve the problem that the way of adjusting the reflecting mirror in the prior art is relatively complex and the adjusting efficiency of the reflecting mirror is low.

[0006] In one aspect, a reflecting mirror adjusting mechanism is provided. The adjusting mechanism is used to be installed in a laser projection device. The adjusting mechanism comprises a box body, a support, an adjusting rod and at least one fastener.

[0007] The box body has a containing cavity and at least one adjusting sliding slot in communication with the containing cavity.

[0008] The support is located in the containing cavity, and the support is used to carry the reflecting mirror.

[0009] The adjusting rod is located in the containing cavity, and is fixedly connected with one end of the support.

[0010] The at least one fastener corresponds to the at least one adjusting sliding slot one by one, and corresponds to at least one end of the adjusting rod one by one. Each fastener is used to be connected with the corresponding end of the adjusting rod after passing through the corresponding adjusting sliding slot.

[0011] Each of the fasteners is configured to move in a corresponding adjustment slot to drive the support to rotate around a first axis parallel to a reflecting surface of the mirror by the adjustment rod, and the adjustment rod is fixed in the receiving cavity after the rotation of the support in the receiving cavity is completed.

[0012] In another aspect, a laser projection device is provided, comprising an optical engine assembly and a light source assembly, and an adjustment mechanism of a mirror between the optical engine assembly and the light source assembly, the adjustment mechanism being the adjustment mechanism described above.

[0013] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects:

[0014] The adjustment mechanism of the mirror is used to be installed in the laser projection device, and can include a box body, a support, an adjustment rod and at least one fastener. When the position of the mirror needs to be adjusted, an operator can control each fastener to move in a corresponding adjustment slot. In this way, the fastener can drive the adjustment rod to rotate, so that the adjustment rod can drive the support to rotate around a first axis parallel to the reflecting surface of the mirror, and then the mirror carried by the support can rotate around the first axis synchronously with the support. The operator can also adjust the tightening degree of the fastener in the corresponding adjustment slot, so that the two ends of the adjustment rod can relatively displace in a direction parallel to the first axis to drive the support to rotate around a second axis, so that the angle between the mirror and the inner wall of the box body can be changed. In this way, the position of the mirror can be adjusted, so that the mirror can be stably kept at a position capable of better reflecting the laser beam provided by the light source assembly to the optical engine assembly. Without using the method of disassembling and reassembling the mirror from the laser projection device, the position of the mirror can be adjusted by adjusting the position of the fastener in the adjustment slot, which effectively simplifies the adjustment process of the position of the mirror, and further improves the efficiency of adjusting the position of the mirror. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 is a structural schematic diagram of a mirror adjustment mechanism provided by an embodiment of the present application;

[0017] Figure 2 is a structural schematic diagram of a support provided by an embodiment of the present application;

[0018] Figure 3 is Figure 1 An exploded view of the adjustment mechanism shown;

[0019] Figure 4 is a structural schematic diagram of an adjustment rod provided by an embodiment of the present application;

[0020] Figure 5 is a structural schematic diagram of another adjustment mechanism provided by an embodiment of the present application;

[0021] Figure 6 is Figure 5 An exploded view of the adjustment mechanism shown;

[0022] Figure 7 is a side view of a box provided by an embodiment of the present application;

[0023] Figure 8 is a schematic diagram of a rotating member cooperating with an auxiliary tool provided by an embodiment of the present application;

[0024] Figure 9 is a schematic diagram of another rotating member cooperating with an auxiliary tool provided by an embodiment of the present application;

[0025] Figure 10 is a structural schematic diagram of another adjustment mechanism provided by an embodiment of the present application;

[0026] Figure 11 is Figure 10 An exploded view of the adjustment mechanism shown;

[0027] Figure 12 is a structural schematic diagram of still another adjustment mechanism provided by an embodiment of the present application;

[0028] Figure 13 is Figure 12 A sectional view of the adjustment mechanism shown at a position where a bracket and a box are connected;

[0029] Figure 14 is Figure 12 A schematic diagram of the adjustment mechanism shown from another perspective. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0031] Reference should be made to Figure 1 , Figure 1is a structural schematic diagram of an adjusting mechanism of a reflector provided by an embodiment of the present application. The adjusting mechanism 000 is used to be installed in a laser projection device, and the adjusting mechanism 000 is used to adjust the position of a reflector installed in the laser projection device. The adjusting mechanism 000 can include a box body 100, a support 200, an adjusting rod 300, and at least one fastener 400.

[0032] The box body 100 in the adjusting mechanism 000 has a containing cavity 100a, and at least one adjusting slot D in communication with the containing cavity 100a in the box body 100.

[0033] The support 200 in the adjusting mechanism 000 can be located in the containing cavity 100a of the box body 100. For a clearer structure of the support 200, please refer to Figure 2 , Figure 2 is a structural schematic diagram of a support provided by an embodiment of the present application. The support 200 in the adjusting mechanism 000 is used to carry a reflector 001. For example, a spring pressing sheet 002 can be used to fix the reflector 001 on the support 200.

[0034] The adjusting rod 300 in the adjusting mechanism 000 can also be located in the containing cavity 100a of the box body 100. For a clearer structure of the adjusting mechanism 000, please refer to Figure 2 and Figure 3 , Figure 3 is Figure 1 is an exploded view of the adjusting mechanism. The adjusting rod 300 in the adjusting mechanism 000 can be fixedly connected with one end of the support 200. In a possible implementation, the adjusting rod 300 and the support 200 can be an integrated structure, that is, the two are integrally formed; in another possible implementation, a locking structure such as a screw or a bolt or glue can be used to fix the adjusting rod 300 at one end of the support 200.

[0035] The at least one fastener 400 in the adjusting mechanism 000 corresponds to the at least one adjusting slot D of the box body 100 one by one, and corresponds to the at least one end of the adjusting rod 300 one by one. Each fastener 400 is used to pass through the corresponding adjusting slot D and be connected with the corresponding end of the adjusting rod 300.

[0036] Each fastener 400 can be configured to move in the corresponding adjusting slot D to drive the support 200 to rotate around a first axis L1 parallel to the reflecting surface of the reflector 001 through the adjusting rod 300, and after the rotation of the support 200 in the containing cavity 100a is completed, the adjusting rod 300 is fixed in the containing cavity 100a.

[0037] It should be noted that after the adjusting mechanism 000 is fixed in the laser projection device, the mirror 001 carried by the support 200 in the adjusting mechanism 000 is located between the optical engine assembly and the light source assembly in the laser projection device. Since the optical engine assembly and the light source assembly in the laser projection device are prone to assembly errors, and the mirror 001 located between the optical engine assembly and the light source assembly is also prone to assembly errors. Therefore, the laser beam provided by the light source assembly in the laser projection device can not all be emitted to the mirror 001, and the laser beam reflected by the mirror 001 can also not all be emitted to the optical engine assembly. Therefore, in order to improve the light output efficiency of the laser projection device, it is necessary to adjust the position of the mirror 001 located between the optical engine assembly and the light source assembly through the adjusting mechanism 000, so as to ensure that the laser beam provided by the light source assembly can be better emitted into the optical engine assembly after being reflected by the mirror 001, and then ensure that the subsequent projection picture projected by the projection lens in the laser projection device has a better display effect.

[0038] As shown in examples Figure 1 , Figure 2 and Figure 3 , when it is necessary to adjust the position of the mirror 001, the operator can control each fastener 400 to move in the corresponding adjusting slot D. In this way, the fastener 400 can drive the adjusting rod 300 to rotate, so that the adjusting rod 300 can drive the support 200 to rotate around the first axis L1 parallel to the reflecting surface of the mirror 001, and then the mirror 001 carried by the support 200 can rotate around the first axis L1 synchronously with the support 200. After the rotation of the support 200 in the accommodating cavity 100a of the box body 100 is completed, the operator can fix the adjusting rod 300 in the accommodating cavity 100a of the box body 100 through the fastener 400. In this way, the position of the mirror 001 can be adjusted, so that the mirror 001 can be stably kept at a position capable of better reflecting the laser beam provided by the light source assembly to the optical engine assembly. Without using the mode of disassembling and reassembling the mirror 001 from the laser projection device, only by adjusting the position of the fastener 400 in the adjusting slot D, the adjustment of the position of the mirror 001 can be realized, the adjustment process of the position of the mirror 001 is effectively simplified, and then the efficiency of the adjustment of the position of the mirror 001 is improved.

[0039] In summary, the application provides an adjusting mechanism of a mirror, which is used in a laser projection device. The adjusting mechanism can include a box body, a support, an adjusting rod and at least one fastener. When the position of the mirror needs to be adjusted, an operator can control each fastener to move in the corresponding adjusting slot. In this way, the fastener can drive the adjusting rod to rotate, so that the adjusting rod can drive the support to rotate around a first axis parallel to the reflecting surface of the mirror, and then the mirror carried by the support can rotate around the first axis synchronously with the support. In this way, the position of the mirror can be adjusted, so that the mirror can be stably kept at a position at which the laser beam provided by the light source assembly can be well reflected to the light engine assembly. Without the need of disassembling and reassembling the mirror from the laser projection device, the position of the mirror can be adjusted by adjusting the position of the fastener in the adjusting slot, so that the adjusting process of the position of the mirror is effectively simplified, and the efficiency of adjusting the position of the mirror is improved.

[0040] In the embodiments of the application, please refer to Figure 4 , Figure 4 is a structural diagram of an adjusting rod provided by the embodiments of the application. The adjusting rod 300 in the adjusting mechanism 000 can include an adjusting rod body 301 fixedly connected to one end of the support 200 in the adjusting mechanism 000, and an adjusting column 302 fixedly connected to at least one end of the adjusting rod body 301. Here, at least one adjusting column 302 in the adjusting rod 300 corresponds to at least one fastener 400 in the adjusting mechanism 000. Each fastener 400 can be threadedly connected to the corresponding adjusting column 302 after passing through the corresponding adjusting slot D.

[0041] For example, please refer to Figure 5 and Figure 6 , Figure 5 is a structural diagram of another adjusting mechanism provided by the embodiments of the application, Figure 6 is Figure 5 is an exploded view of the adjusting mechanism. The end of the adjusting column 302 in the adjusting rod 300 connected to the fastener 400 has a threaded hole, and the fastener 400 can have a screw rod matched with the threaded hole of the adjusting column 302. The length of the screw rod is greater than or equal to the sum of the depth of the threaded hole and the depth of the adjusting slot D, so that the screw rod of the fastener 400 can be threadedly connected to the corresponding adjusting column 302 after passing through the corresponding adjusting slot D.

[0042] Thus, the fastener 400 and the adjusting column 302 are kept in a connected state by thread engagement, and when the position of the mirror 001 located in the accommodating cavity 100a of the box body 100 needs to be adjusted, it is necessary to ensure that the fastener 400 does not exert a pressing force on the shell 100. In this case, the fastener 400 moving in the adjusting slot D can drive the adjusting column 302 in the adjusting rod 300 to move synchronously, so that the adjusting rod body 301 in the adjusting rod 300 can rotate around the first axis L1, and then the adjusting rod body 301 can drive the bracket 200 to rotate synchronously around the first axis L1, so that the bracket 200 can drive the mirror 001 carried thereby to rotate synchronously around the first axis L1. In this way, the position of the mirror 001 located in the accommodating cavity 100a can be adjusted.

[0043] After the position of the mirror 001 located in the accommodating cavity 100a is adjusted, the fastener 400 can be moved towards the box body 100 by screwing until the fastener 400 is tightened, so that the fastener 400 and one side of the box body 100 can be tightly attached together, and the fastener 400 can exert sufficient pressing force on the box body 100, and then the adjusting column 302 in the adjusting rod 300 and the inner wall of the accommodating cavity 100a of the box body 100 are tightly attached together. In this way, the adjusting rod 300 can be fixed in the accommodating cavity 100a of the box body 100 by the fastener 400, so that the bracket 200 and the mirror 001 carried by the bracket 200 can also be fixed in the accommodating cavity 100a, and then the mirror 001 can be stably installed at the specified position.

[0044] In the present application, as shown in FIGS. 5 and Figure 6 The box body 100 in the adjusting mechanism 000 can also have a through hole O communicating with the accommodating cavity 100a of the box body 100, and the adjusting mechanism 000 can further include a rotating piece 303 fixedly connected to the side of the adjusting rod body 301 in the adjusting rod 300 away from the bracket 200. The rotating piece 303 can be configured to be clamped with the end of the auxiliary tool 500 inserted from the through hole O.

[0045] Thus, when the position of the mirror 001 needs to be adjusted, the operator can insert the end of the auxiliary tool 500 into the through hole O of the rotating piece 303, so that the end of the auxiliary tool 500 can be clamped with the rotating piece 303, and then the operator can rotate the auxiliary tool 500, so that the rotating tool drives the rotating piece 303 to rotate around the center axis of the through hole O. Here, the center axis of the through hole O can be collinear with the first axis L1. Thus, when the rotating tool drives the rotating piece 303 to rotate, since the rotating piece 303 is fixedly connected with the adjusting rod body 301, the rotating piece 303 can drive the adjusting rod body 301 to rotate around the first axis L1, so that the adjusting rod body 301 can drive the support 200 to rotate around the first axis L1.

[0046] In this case, in order to improve the position adjustment effect of the mirror 001, it is necessary to ensure that the first axis L1 is coincident with the symmetry axis of the long side direction of the mirror 001. Therefore, it is necessary to ensure that the symmetry axis of the long side direction of the mirror 001 is collinear with the center axis of the through hole O.

[0047] It should be noted that when the auxiliary tool 500 drives the rotating piece 303 to rotate, the fastener 400 and the adjusting column 302 in the adjusting rod 300 are also in a threaded connection state, and the fastener 400 and the adjusting rod 300 can move synchronously. In the process of driving the rotating piece 303 to rotate by the auxiliary tool 500, the fastener 400 moves in the adjusting sliding groove D, and when the fastener 400 is at the limit position in the adjusting sliding groove D, that is, when the fastener 400 contacts the edge of the adjusting sliding groove D, the auxiliary tool 500 cannot be rotated due to the resistance from the fastener 400. Thus, the rotation range of the auxiliary tool 500 to the adjusting rod 300 can be controlled by the cooperation of the fastener 400 and the adjusting sliding groove D, so that the position of the mirror 001 can be adjusted within a certain range, and the deviation of the position of the mirror 001 caused by an excessively large adjustment range can be avoided, thereby improving the adjustment efficiency of the position of the mirror 001.

[0048] It should be further noted that please refer to Figure 7 , Figure 7 is a side view of a box body provided by the embodiment of the present application. The adjusting sliding groove D on the box body 100 can be a circular arc sliding groove, and the center of the circular arc sliding groove is located on the center axis of the through hole O of the box body 100. Thus, when the operator controls the adjusting rod 300 to rotate around the first axis L1 by the auxiliary tool 500, since the center of the adjusting sliding groove D is located on the center axis of the through hole O, and the center axis of the through hole O is coincident with the first axis L1, the fastener 400 located in the adjusting sliding groove D can rotate around the center axis of the through hole O, so that the fastener 400 and the adjusting rod 300 can better rotate synchronously around the first axis L1.

[0049] In the embodiment of the present application, there are multiple possible implementations for the end portion of the auxiliary tool 500 and the rotating member 303. The embodiment of the present application is schematically described using the following two optional implementations as examples:

[0050] For the first optional implementation, please refer to Figure 8 , Figure 8 This is a schematic diagram illustrating the mating of a rotating member and an auxiliary tool provided in an embodiment of the present application. The rotating member 303 has a rotation adjustment hole A on the side facing away from the adjustment rod body 301, which is connected to the through hole O. The cross-sectional shape of the rotation adjustment hole A can be any non-circular shape. For example, the cross-sectional shape of the rotation adjustment hole A is hexagonal. The shape of the rotation adjustment hole A matches the shape of the end of the auxiliary tool 500, and the end of the auxiliary tool 500 can be inserted into the rotation adjustment hole A.

[0051] For example, the auxiliary tool 500 may include a handle 501 and a connecting rod 502 fixedly connected to the handle 501. The length of the connecting rod 502 of the auxiliary tool 500 is greater than the sum of the depth of the through hole O and the depth of the rotation adjustment hole A, and the shape of the end of the connecting rod 502 facing away from the handle 501 matches the shape of the rotation adjustment hole A. In this way, the end of the connecting rod 502 of the auxiliary tool 500 facing away from the handle 501 can be inserted into the rotation adjustment hole A and engage with the rotating member 303 in the adjustment rod 300. The operator can rotate the connecting rod 502 using the handle 501 of the auxiliary tool 500, thereby causing the connecting rod 502 to rotate the rotating member 303 engaged therewith.

[0052] For the second optional implementation, please refer to Figure 9 , Figure 9 This is a schematic diagram illustrating another embodiment of the present application, illustrating the mating of a rotating member and an auxiliary tool. The rotating member 303 has a latching protrusion B on the side facing away from the adjusting rod body 301. The cross-sectional shape of the latching protrusion B can be any non-circular shape. For example, the cross-sectional shape of the latching protrusion B is hexagonal. Here, the end of the auxiliary tool 500 has a latching groove C that mates with the latching protrusion B. The shape of the latching protrusion B matches the shape of the latching groove C of the auxiliary tool 500, and the latching protrusion B can be located within the latching groove C.

[0053] The auxiliary tool 500 can include a handle 501 and a connecting rod 502 fixedly connected to the handle 501. The length of the connecting rod 502 of the auxiliary tool 500 is greater than the sum of the depth of the through hole O and the thickness of the clamping protrusion B, and the clamping groove C is located at the end of the connecting rod 502 away from the handle 501. In this way, the end of the connecting rod 502 of the auxiliary tool 500 away from the handle 501 can be inserted into the through hole O, clamped with the clamping protrusion B of the rotating piece 303 in the adjusting rod 300, and the operator can drive the connecting rod 502 to rotate through the handle 501 of the auxiliary tool 500, so that the connecting rod 502 can drive the rotating piece 303 clamped therewith to rotate.

[0054] In the embodiments of the present application, please refer to Figure 5 and Figure 6 The length direction of the adjusting rod body 301 in the adjusting rod 300 can intersect the reflecting surface of the reflector 001. For example, the length direction of the adjusting rod body 301 in the adjusting rod 300 is perpendicular to the reflecting surface of the reflector 001.

[0055] The box body 100 can have two adjusting grooves D, and the adjusting mechanism 000 can include two fasteners 400. The two fasteners 400 are respectively connected to the two oppositely arranged ends of the adjusting rod 300 after passing through the two adjusting grooves D in the box body 100. In this case, the adjusting rod 300 can include two adjusting columns 302, which are respectively fixed to the two oppositely arranged ends of the adjusting rod body 301 in the adjusting rod 300, and the two adjusting columns 302 can be respectively screwed with the two fasteners 400 in the adjusting mechanism 000.

[0056] It should be noted that when the box body 100 has two adjusting grooves D, the through hole O of the box body 100 can be located between the two adjusting grooves D. In this way, when the auxiliary tool 500 inserted from the through hole O drives the rotating piece 303 in the adjusting rod 300 to rotate, the two fasteners 400 in the adjusting mechanism 000 can respectively move in the two adjusting grooves D, so that the two supporting columns 303 in the adjusting rod 300 can also move synchronously. Since the adjusting grooves D are circular arc grooves, and the center of the circular arc groove is located on the central axis of the through hole O. Therefore, when the two fasteners 400 respectively move in the two adjusting grooves D, the two fasteners 400 can rotate around the central axis of the through hole O, so that the two fasteners 400 can drive the two supporting columns 303 to rotate synchronously around the central axis of the through hole O, thereby enabling the adjusting rod 300 to rotate synchronously around the central axis of the through hole O more stably.

[0057] Here, the two fasteners 400 in the adjusting mechanism 000 can be configured to, after the adjusting rod 300 is fixed in the accommodating cavity 100a of the box body 100, allow the two ends of the adjusting rod 300 to relatively displace in a direction parallel to the first axis L1, so as to drive the bracket 200 to rotate about the second axis L2 which is parallel to the reflecting surface of the mirror 001 and perpendicular to the first axis L1.

[0058] For example, after the fastener 400 fixes the adjusting rod 300 in the accommodating cavity 100a of the box body 100, the fastener 400 is in a screwed state. Since the adjusting column 302 at the end of the adjusting rod 300 is tightly attached to the box body 100 under the compression force provided by the fastener 400, the adjusting column 302 will be elastically deformed and store elastic force. When it is needed to adjust the position of the mirror 001 relative to the direction of the second axis L2, one of the two fasteners 400 can be unscrewed as needed, and it is also needed to ensure that the fastener 400 does not move in the axial direction. In this process, the adjusting column 302 corresponding to this fastener 400 can release part of the elastic force, and the part of the adjusting column 302 that has been compressed can gradually recover, but will not recover to the state before being compressed. In this way, the two adjusting columns 302 in the adjusting rod 300 will relatively displace in the direction parallel to the first axis L1, so as to relatively displace the two ends of the adjusting rod body 301 in the adjusting rod 300 in the direction parallel to the first axis L1. Since the length direction of the adjusting rod body 301 is perpendicular to the reflecting surface of the mirror 001. Therefore, when the two ends of the adjusting rod body 301 relatively displace in the direction parallel to the first axis L1, the bracket 200 connected with the adjusting rod body 301 can rotate about the second axis L2 which is parallel to the reflecting surface of the mirror 001 and perpendicular to the first axis L1. Here, the second axis L2 is located at the side of the bracket 200 close to the adjusting rod body 301.

[0059] In this case, the adjusting mechanism 000 can not only allow the mirror 001 to rotate about the first axis L1, but also allow the mirror 001 to rotate about the second axis L2, so as to change the included angle between the mirror 001 and the inner wall of the box body 100. In this way, the mirror 001 can be better adjusted to a position at which the laser beam provided by the light source assembly can be better reflected to the optical engine assembly.

[0060] In the present application, the above-mentioned embodiments are all described with the case of two fasteners 400, and the present application also provides other possible implementation manners, please refer to Figure 10 and Figure 11 , Figure 10 is a structural schematic diagram of another adjusting mechanism provided by the embodiments of the present application, Figure 11 is Figure 10The exploded view of the adjusting mechanism is shown. The number of fasteners 400 in the adjusting mechanism 000 can be three, in which case the number of adjusting grooves D and adjusting columns 302 in the adjusting rod 300 can also be three, so that each fastener 400 in the adjusting mechanism 000 can correspond to one adjusting groove D and one adjusting column 302.

[0061] Optionally, the distances between the three fasteners 400 and the through hole O are consistent, that is, the three fasteners 400 are located on a circle with the through hole O as the center, so that each fastener 400 can move synchronously in the adjusting groove D during the rotation of the rotating member 303 driven by the auxiliary tool 500, avoiding the situation that part of the fasteners 400 cannot rotate again after reaching the limit position.

[0062] Optionally, the three fasteners 400 can be configured to, after fixing the adjusting rod 300 in the accommodating cavity 100a of the box body 100, allow the two end portions of the adjusting rod 300 to relatively displace in a direction parallel to the first axis L1, so as to change the included angle between the mirror 001 and the inner wall of the box body 100. Here, the adjusting mode of the three fasteners to the included angle between the mirror 001 and the inner wall of the box body 100 can refer to the adjusting mode of the two fasteners 400, which will not be described here. Compared with the adjusting mechanism 000 using two fasteners 400, the adjusting mechanism 000 using three fasteners 400 has better stability during adjusting the position of the mirror 001 and the included angle between the mirror 001 and the inner wall of the box body 100, which can ensure that the support 200 will not be dislocated due to external environmental interference during the adjusting process.

[0063] In the embodiments of the present application, please refer to Figure 12 , Figure 12is a structural schematic diagram of another adjusting mechanism provided in the embodiments of the present application. The adjusting mechanism 000 can further include a fastening adhesive 600, which can be configured to bond the fastener 400 and the box body 100 after the support 200 is rotated about the second axis L2. For example, the operator can rotate the support 200 about the first axis L1 by means of the auxiliary tool 500, so that the mirror 001 carried by the support 200 is in a suitable position on the first axis L1. Then, the operator can rotate the support 200 about the second axis L2 by controlling the fastener 400 to move away from the box body 100, so that the mirror 001 is also in a suitable position on the second axis L2. Then, the operator can use the fastening adhesive 600 to bond the fastener 400 and the box body 100, so that the fastener 400 and the box body 100 are bonded into an integral whole. In this way, the fastener 400 cannot move in the adjusting slot D of the box body 100 any more, and the support 200 can be prevented from being dislocated due to external environmental interference, so that the mirror 001 can be more stably kept in a position capable of better reflecting the laser beam provided by the light source assembly to the optical engine assembly, thereby ensuring that the projection picture projected by the projection lens has a better effect.

[0064] In the embodiments of the present application, please refer to Figure 13 , Figure 13 is Figure 12 the cross-sectional view of the adjusting mechanism shown in FIG. 1, the adjusting mechanism 000 can further include a mounting seat fixed on the inner wall of the accommodating cavity 100a in the box body 100, which is used to support the support 200 and is rotationally connected with the support 200. Here, the mounting seat in the adjusting mechanism 000 can include a first sub-mounting seat 101 in contact with the rotating piece 303 in the adjusting rod 300 and a second sub-mounting seat 102 arranged opposite to the first sub-mounting seat 101 on the inner wall of the accommodating cavity 100a.

[0065] For example, at least part of the rotating piece 303 in the adjusting rod 300 can be in contact with the first sub-mounting seat 101, and the part of the first sub-mounting seat 101 in contact with the rotating piece 303 has a first rotation groove S1 matching the shape of the rotating piece 303, for example, when the shape of the rotating piece 303 is cylindrical, the shape of the first rotation groove S1 can be arc-shaped, and the support 200 can be rotationally connected with the first sub-mounting seat 101 through the rotating piece 303. In this way, since the first sub-mounting seat 101 can be rotationally connected with the rotating piece 303 in the adjusting rod 300, and the support 200 is fixedly connected with the adjusting rod 300, the first sub-mounting seat 101 can better support the support 200, thereby ensuring that the support 200 can be more stably rotated about the first axis L1 under the action of the auxiliary tool 500.

[0066] In this application, please refer to Figure 14 , Figure 14 is Figure 12 The adjustment mechanism shown in another perspective view of the shaft 201 of the bracket 200 away from the side of the adjustment rod 300, the first mounting seat 101 and the second mounting seat 102 in the adjustment mechanism 000 are symmetrically arranged on the inner wall of the accommodating cavity 100a in the box body 100. For example, at least part of the shaft of the bracket 200 can be in contact with the mounting seat arranged on the inner wall of the side of the accommodating cavity 100a opposite to the adjustment rod 300, and the second sub-mounting seat 102 and the shaft 201 have a second rotation groove S2 matched with the shape of the shaft, for example, when the shape of the shaft 201 is cylindrical, the shape of the second rotation groove S2 can be arc. In this way, the second sub-mounting seat 102 can better support the bracket 200, so as to ensure that the bracket 200 can rotate more stably around the first axis L1 under the action of the auxiliary tool 500.

[0067] It should be noted that, as Figure 4 shown, the bracket 200 is only connected with the mounting seat through the rotating part 303 of the adjustment rod 300 and the shaft, and there is a gap between the side of the adjustment rod 300 close to the first mounting seat 101 and the adjustment rod 300, and there is also a gap between the side of the bracket 200 close to the second mounting seat 102 and the adjustment rod 300. Because of the existence of these gaps, when the two ends of the adjustment rod 300 are relatively displaced in the direction parallel to the first axis L1, the bracket 200 has a space on both sides which can rotate around the second axis L2.

[0068] It should be noted that, the adjustment mechanism 000 can also include: a first limiting spring 700 fixed on the first mounting seat 101 and a second limiting spring 800 fixed on the second mounting seat 102. The first limiting spring 700 is used for limiting the rotating part 303 in the adjustment rod 300, and is in rotating connection with the rotating part 303. For example, as Figure 13As shown, the first limiting elastic sheet 700 can have a limiting groove X matching the shape of the rotating piece 303, for example, when the rotating shaft is in a cylindrical shape, the limiting groove can be in a circular arc shape. In this way, when the rotating piece 303 rotates around the first axis L1, the first limiting elastic sheet 700 can ensure that the support 200 cannot displace in a direction perpendicular to the first axis L1, and when the rotating piece 303 rotates around the second axis L2, the first limiting elastic sheet 700 can limit the rotation of the support 200 in the direction of the second axis L2, so as to ensure that the support 200 cannot produce a large-amplitude rotation around the second axis L2, thereby ensuring that the adjustment accuracy of the position of the support 200 in the direction of the second axis L2 is high. Here, the beneficial effects of the cooperation between the second limiting elastic sheet 800 and the rotating shaft 201 of the support 200 can refer to the beneficial effects of the cooperation between the first limiting elastic sheet 700 and the rotating piece 303, which will not be described herein again.

[0069] In the embodiments of the present application, please refer to Figure 14 The box body 100 can further have a first light hole G1 and a second light hole G2 in communication with the accommodating cavity 100a, the first light hole G1 is directed to the light source assembly in the laser projection device, the second light hole G2 is directed to the optical engine assembly in the laser projection device, and the reflecting surface of the reflecting mirror 001 is used to reflect the laser emitted from the first light hole G1 to the second light hole G2. For example, after the fastener 400 and the box body 100 are bonded, that is, after the reflecting mirror 001 is fixed at a proper position, the laser projection device can work. During the working process of the laser projection device, the laser beam emitted by the light source assembly can pass through the first light hole G1 and be incident on the reflecting mirror 001, and the laser beam reflected by the reflecting mirror 001 can be emitted from the second light hole G2 and enter the optical engine assembly.

[0070] In summary, the present application provides an adjusting mechanism of a reflecting mirror, the adjusting mechanism is used to be installed in a laser projection device, and the adjusting mechanism can include a box body, a support, an adjusting rod and at least one fastener. When it is necessary to adjust the position of the reflecting mirror, an operator can control each fastener to move in a corresponding adjusting sliding groove. In this way, the fastener can drive the adjusting rod to rotate, so that the adjusting rod can drive the support to rotate around a first axis parallel to the reflecting surface of the reflecting mirror, and then the reflecting mirror carried by the support can rotate around the first axis synchronously with the support. In this way, the position of the reflecting mirror can be adjusted, so that the reflecting mirror can be stably kept at a position capable of reflecting the laser beam provided by the light source assembly to the optical engine assembly. Without the need to disassemble and reassemble the reflecting mirror from the laser projection device, the position of the reflecting mirror can be adjusted only by adjusting the position of the fastener in the adjusting sliding groove, thereby effectively simplifying the adjusting process of the position of the reflecting mirror, and further improving the efficiency of adjusting the position of the reflecting mirror.

[0071] The embodiments of the present application also provide a projection device, which can include a light engine assembly and a light source assembly, and an adjusting mechanism 000 of a mirror between the light engine assembly and the light source assembly. The adjusting mechanism 000 is the adjusting mechanism 000 described above. The light source assembly is configured to provide a laser beam, the adjusting mechanism 000 of the mirror is configured to reflect the laser beam provided by the light source assembly to the light engine assembly, and the light engine assembly is configured to modulate the laser beam reflected by the mirror into an image beam. Here, the adjusting mechanism 000 can be the adjusting mechanism 000 in the embodiments described above. For example, the projection lens can be the projection lens shown in Figure 1 、 Figure 5 、 Figure 10 、 Figure 12 or Figure 14 the adjusting mechanism 000 shown in the embodiments described above.

[0072] In the present application, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.

[0073] The above description is only optional embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjusting mechanism of a mirror, characterized by comprising: The adjusting mechanism is used in a laser projection device, and comprises a box, a support, an adjusting rod and at least one fastener; The box has a receiving cavity and at least one adjusting slot communicating with the receiving cavity; The support is located in the receiving cavity and used for bearing the reflecting mirror; The adjusting rod is located in the receiving cavity and fixedly connected with one end of the support; The at least one fastener corresponds to the at least one adjusting slot and the at least one end of the adjusting rod, and each fastener is used for connecting with the corresponding end of the adjusting rod after passing through the corresponding adjusting slot; Each fastener is configured to move in the corresponding adjusting slot to drive the support to rotate around a first axis parallel to the reflecting surface of the reflecting mirror through the adjusting rod, and the adjusting rod is fixed in the receiving cavity after the rotation of the support in the receiving cavity is completed.

2. The adjustment mechanism of claim 1, wherein, The adjusting rod comprises an adjusting rod body fixedly connected with one end of the support and at least one adjusting column fixedly connected with at least one end of the adjusting rod body, and the at least one adjusting column corresponds to the at least one fastener; Each fastener is screw-connected with the corresponding adjusting column after passing through the corresponding adjusting slot.

3. The adjustment mechanism of claim 2, wherein, The box further has a through hole communicating with the receiving cavity, and the adjusting mechanism further comprises a rotating member fixedly connected with one side of the adjusting rod body away from the support; The rotating member is configured to be clamped with the end of an auxiliary tool inserted from the through hole.

4. The adjustment mechanism of claim 3, wherein, One side of the rotating member away from the adjusting rod body has a rotating adjusting hole communicating with the through hole, the shape of the cross section of the rotating adjusting hole is any non-circular shape, the shape of the rotating adjusting hole matches the shape of the end of the auxiliary tool, and the end of the auxiliary tool can be inserted into the rotating adjusting hole.

5. The adjustment mechanism of claim 3, wherein, The adjusting slot is a circular arc slot, and the center of the circular arc slot is located on the central axis of the through hole.

6. Adjusting mechanism according to any of claims 2 to 5, characterized in that The length direction of the adjusting rod body intersects with the reflecting surface of the reflecting mirror, the box has two adjusting slots, and the adjusting mechanism comprises two fasteners; The two fasteners are respectively connected with two opposite ends of the adjusting rod after passing through the two adjusting slots, and the two fasteners are configured to relatively displace the two ends of the adjusting rod in a direction parallel to the first axis to drive the support to rotate around a second axis parallel to the reflecting surface of the reflecting mirror and perpendicular to the first axis after the adjusting rod is fixed in the receiving cavity.

7. The adjustment mechanism of claim 6, wherein, The adjusting mechanism further comprises a fastening adhesive configured to bond the fastener and the box after the support is rotated around the second axis.

8. Adjusting mechanism according to any of claims 1 to 5, characterized in that The adjusting mechanism further comprises a mounting seat fixed on the inner wall of the receiving cavity, the mounting seat is used for supporting the support, and the support is rotationally connected with the mounting seat.

9. The adjustment mechanism according to any one of claims 1 to 5, characterized in that The box body further has a first light hole and a second light hole in communication with the accommodating cavity, the first light hole is directed to a light source assembly in the laser projection device, the second light hole is directed to a light engine assembly in the laser projection device, and a reflecting surface of the reflecting mirror is used for reflecting laser light shot from the first light hole to the second light hole.

10. A laser projection device, comprising: The laser projection device comprises: a light engine assembly and a light source assembly, and an adjusting mechanism of a reflecting mirror between the light engine assembly and the light source assembly, the adjusting mechanism being any one of the adjusting mechanisms in claims 1 to 9.

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