Laser projection equipment

Abstract

The utility model relates to the field of projection, and discloses laser projection equipment. A laser projection device comprises a housing and a caster adjusting structure. An adjusting hole is formed in the bottom of the shell; the trundle adjusting structure comprises a guide column, a trundle, a driving mechanism and a transmission mechanism. The first end of the guide column penetrates through the adjusting hole and extends into the shell, and the guide column is in sliding connection with the inner wall of the adjusting hole; the caster is connected to the second end of the guide column; the driving mechanism is located in the shell. The driving mechanism comprises a worm and a turbine; the worm comprises a first driving end; the turbine is in transmission connection with the worm; the transmission mechanism is located in the shell and is in transmission connection with the turbine and the guide column so as to drive the guide column to ascend and descend in the axis direction. An operation hole used for exposing the first driving end is formed in the shell. The laser projection equipment disclosed by the utility model is used for avoiding the height change of the trundles caused by mistaken touch.

Description

TECHNICAL FIELD

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

[0002] The laser projection device needs to be adjusted in pitch after installation through casters. The current solution is to fix the casters through threads at the bottom of the main machine, to realize the height lifting of the casters through rotating the threads, to achieve the purpose of adjusting the pitch, and to easily cause the caster height to change due to accidental touch after the caster adjustment is completed, thereby causing the main machine picture to shift. CONTENT OF THE UTILITY MODEL

[0003] The present application discloses a laser projection device for avoiding the caster height change due to accidental touch.

[0004] To achieve the above purpose, the present application provides the following technical solutions:

[0005] A laser projection device comprises:

[0006] a shell, the bottom of the shell being formed with an adjusting hole, and

[0007] a caster adjusting structure, the caster adjusting structure comprising:

[0008] a guide column, the first end of the guide column penetrating through the adjusting hole and extending into the interior of the shell, and the guide column being in sliding connection with the inner wall of the adjusting hole;

[0009] a caster connected to the second end of the guide column;

[0010] a driving mechanism located in the interior of the shell, the driving mechanism comprising:

[0011] a worm, the worm comprising a first driving end, and

[0012] a turbine in transmission connection with the worm, and

[0013] a transmission mechanism located in the interior of the shell, the transmission mechanism being in transmission connection with the turbine and the guide column to drive the guide column to lift along the axial direction of the guide column;

[0014] wherein the shell is formed with an operation hole for exposing the first driving end.

[0015] In the above laser projection device, the guide column adjusting the caster is driven by the driving structure and the transmission mechanism to lift along the axial direction of the guide column. The driving mechanism is a worm and turbine transmission structure with self-locking function, when the caster or the guide column is accidentally touched, the accidental touch force is smaller than the force between the worm and the turbine, thereby ensuring that the guide column will not lift due to accidental touch, avoiding the caster height change due to accidental touch, and further avoiding the main machine picture shift problem.

[0016] In some embodiments, the first driving end is formed with a driving groove;

[0017] The driving groove is any one of a linear groove, a cross groove, or a polygonal groove; or,

[0018] The first driving end is formed with a driving protrusion;

[0019] The driving protrusion is polygonal in radial cross-section of the worm;

[0020] In some embodiments, the driving mechanism further comprises:

[0021] a motor;

[0022] The worm further comprises:

[0023] a second driving end opposite to the first driving end and in driving connection with the motor;

[0024] In some embodiments, the transmission mechanism comprises:

[0025] a columnar structure in coaxial driving connection with the turbine; a circumferential surface of the columnar structure is formed with a helical lifting groove; and

[0026] a follower in sliding connection with the helical lifting groove; one end of the follower protruding from the helical lifting groove is in driving connection with the guide column.

[0027] In some embodiments, the caster adjusting structure further comprises:

[0028] a guide sleeve fixedly arranged on an inner wall of the adjusting hole;

[0029] The guide column is in sliding connection with an inner portion of the guide sleeve; the guide column comprises:

[0030] a first driving end in driving connection with the follower; and

[0031] a second driving end in coaxial driving connection with the caster.

[0032] In some embodiments, the guide column is a light pole.

[0033] In some embodiments, the housing comprises:

[0034] a bottom plate formed with the adjusting hole;

[0035] The caster adjusting structure further comprises:

[0036] a support mounted on a side surface of the bottom plate facing an inner portion of the housing;

[0037] The driving mechanism and the transmission mechanism are mounted on the bottom plate through the support.

[0038] In some embodiments, the housing comprises:

[0039] a bottom plate, the bottom plate having a first hole formed thereon;

[0040] The caster adjustment structure further comprises:

[0041] an adapter plate, mounted on a side surface of the bottom plate facing the interior of the housing, the adapter plate having a second hole formed thereon;

[0042] The second hole and the first hole coaxially communicate to form the adjustment hole; and

[0043] a support, mounted on a side surface of the adapter plate away from the bottom plate;

[0044] The drive mechanism and the transmission mechanism are mounted on the adapter plate through the support.

[0045] In some embodiments, the housing comprises:

[0046] a bottom surface, the bottom surface having two first side edges arranged along a first direction and two second side edges arranged along a second direction, wherein the second direction is perpendicular to the first direction;

[0047] The laser projection device comprises:

[0048] a plurality of caster adjustment structures, the plurality of caster adjustment structures being arranged at the bottom surface near one of the first side edges.

[0049] In some embodiments, the housing comprises:

[0050] a bottom surface, the bottom surface having a plurality of corner regions;

[0051] The laser projection device comprises:

[0052] a plurality of caster adjustment structures, the plurality of caster adjustment structures being arranged one-to-one corresponding to the number and positions of the plurality of corner regions. BRIEF DESCRIPTION OF DRAWINGS

[0053] Figure 1 A structural schematic diagram of a laser projection device according to an embodiment of the present application;

[0054] Figure 2 A structural schematic diagram of a bottom plate of a housing in a laser projection device according to an embodiment of the present application;

[0055] Figure 3 A structural schematic diagram of a caster adjustment structure in a laser projection device according to an embodiment of the present application;

[0056] Figure 4 Another structure schematic view of the bottom plate of the shell in the laser projection device provided by the embodiment of the present application is provided.

[0057] Figure 5 Another structure schematic view of the adapter plate in the caster adjustment structure in the laser projection device provided by the embodiment of the present application is provided.

[0058] Figure 6 Another installation structure schematic view of the caster adjustment structure and the bottom plate of the shell in the laser projection device provided by the embodiment of the present application is provided.

[0059] Figure 7 Provided is Figure 6 The enlarged view of A in the middle;

[0060] Figure 8 Another structure schematic view of the caster adjustment structure in the laser projection device provided by the embodiment of the present application is provided.

[0061] Figure 9 Provided is Figure 8 The exploded view of the caster adjustment structure in the middle;

[0062] Figure 10 A structure schematic view of a support in a laser projection device provided by the embodiment of the present application is provided.

[0063] Figure 11 A structure schematic view of a driving mechanism in a laser projection device provided by the embodiment of the present application is provided.

[0064] Figure 12 A structure schematic view of a turbine in a laser projection device provided by the embodiment of the present application is provided.

[0065] Figure 13 A structure schematic view of a columnar structure in a laser projection device provided by the embodiment of the present application is provided.

[0066] Figure 14 An installation structure schematic view of a guide column, a follower and a guide sleeve in a laser projection device provided by the embodiment of the present application is provided.

[0067] Figure 15 An installation structure schematic view of a guide column and a follower in a laser projection device provided by the embodiment of the present application is provided.

[0068] Figure 16 A structure schematic view of a guide column in a laser projection device provided by the embodiment of the present application is provided.

[0069] Figure 17 A structure schematic view of a follower in a laser projection device provided by the embodiment of the present application is provided.

[0070] Figure 18A structure diagram of a guide sleeve in a laser projection device provided by an embodiment of the present application is shown in the figure.

[0071] Figure 19 A structure diagram of a guide column in another laser projection device provided by an embodiment of the present application is shown in the figure.

[0072] Figure 20 A structure diagram of a caster in a laser projection device provided by an embodiment of the present application is shown in the figure.

[0073] Figure 21 A distribution diagram of a caster adjustment structure in a laser projection device provided by an embodiment of the present application is shown in the figure.

[0074] Figure 22 A distribution diagram of another caster adjustment structure in a laser projection device provided by an embodiment of the present application is shown in the figure.

[0075] Icon: 100 - housing; 200 - caster adjustment structure; 110 - bottom plate; 101 - adjustment hole; 102 - operation hole; 111 - first mounting hole; 112 - second mounting hole; 113 - bottom surface; 101a - first hole; 101b - second hole; 113a - first side edge; 113b - second side edge; 113c - corner area; 210 - guide column; 211 - first transmission end; 212 - second transmission end; 2111 - connecting hole; 2121 - threaded column; 2221 - threaded hole; 220 - caster; 221 - leg; 222 - connecting rod; 230 - driving mechanism; 231 - worm; 232 - turbine; 2311 - first driving end; 2312 - second driving end; 2321 - counterbore; 2322 - assembly hole; 2311a - driving groove; 240 - transmission mechanism; 241 - columnar structure; 242 - follower; 2411 - helical lifting groove; 2412 - first mounting end; 2413 - second mounting end; 2412a - first fixed hole; 2421 - connecting end; 2422 - sliding end; 250 - guide sleeve; 251 - guide hole; 252 - cap end; 253 - column end; 260 - bracket; 261 - first side plate; 262 - second side plate; 263 - top plate; 264 - bottom fixed end; 2631 - support part; 2632 - through hole; 2641 - second fixed hole; 2631a - support groove; 270 - adapter plate; 271 - first mounting hole; 272 - second mounting hole; 280 - first fastener; 290 - second fastener. DETAILED DESCRIPTION

[0076] First, introduce the application scenario of the present application: in order to ensure user experience, it is necessary to ensure the projection effect of the laser projection device, so generally a plurality of casters capable of adjusting the height of the laser projection device are arranged between the bottom surface of the laser projection device and the supporting surface such as a desktop, the casters are fixed on the bottom of the laser projection device through threads, the casters can be rotated to realize lifting, and by adjusting the height of different casters, the projection angle of the laser projection device is adjusted to ensure the best projection effect. However, due to accidental touch or desktop vibration, shaking and the like, the casters may rotate to a certain extent, which may affect the actual projection angle of the laser projection device, thereby reducing user experience.

[0077] Based on the above application scenario, the embodiment of the present application provides a laser projection device, which can avoid the height change of the caster caused by accidental touch, thereby ensuring user experience.

[0078] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application. In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B; the "and / or" in the text only describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0079] Hereinafter, the terms "first" and "second" are only used for description purposes, and cannot be understood as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more features, and in the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" is two or more than two.

[0080] Figure 1 A structural schematic diagram of a laser projection device is shown; Figure 2 A structural schematic diagram of a housing bottom plate in a laser projection device is shown; Figure 3 A structural schematic diagram of a caster adjusting structure is shown.

[0081] As Figures 1 to 3As shown, the embodiment of the present application provides a laser projection device, comprising: a shell 100 and a caster adjusting structure 200; the bottom of the shell 100 is formed with an adjusting hole 101; the caster adjusting structure 200 comprises: a guide column 210, a caster 220, a driving mechanism 230 and a transmission mechanism 240; the first end of the guide column 210 penetrates through the adjusting hole 101 and extends into the inside of the shell 100, and the guide column 210 is in sliding connection with the inner wall of the adjusting hole 101; the caster 220 is connected to the second end of the guide column 210; the driving mechanism 230 is located inside the shell 100; the driving mechanism 230 comprises: a worm 231 and a turbine 232; the worm 231 comprises: a first driving end 2311; the turbine 232 is in transmission connection with the worm 231;

[0082] The transmission mechanism 240 is located inside the shell 100 and is in transmission connection with the turbine 232 and the guide column 210 to drive the guide column 210 to lift along the axial direction thereof; wherein, the shell 100 is formed with an operation hole 102 for exposing the first driving end 2311.

[0083] In an embodiment, as shown, Figure 1 The bottom of the shell 100 of the laser projection device is installed with the caster adjusting structure 200, the caster adjusting structure 200 plays a supporting role for the shell 100, and the projection angle of the laser projection device can be adjusted by adjusting the supporting height of the caster adjusting structure 200. As shown, Figure 2 The bottom of the shell 100 is provided with the adjusting hole 101. As shown, Figure 3 The caster adjusting structure 200 comprises the caster 220, the guide column 210, the driving mechanism 230 and the transmission mechanism 240. The caster 220 is located outside the shell 100, the driving mechanism 230 and the transmission mechanism 240 are located inside the shell 100, the second end of the guide column 210 is connected with the caster 220, and the first end penetrates through the adjusting hole 101 and extends into the inside of the shell 100 to be connected with the transmission mechanism 240. The driving mechanism 230 comprises the worm 231 and the turbine 232, the worm 231 is provided with the first driving end 2311, and the turbine 232 is in meshing transmission connection with the worm 231. The shell 100 is formed with the operation hole 102 for exposing the first driving end 2311, as shown, Figure 1 When it is needed to adjust the supporting height of the caster adjusting structure 200, one end of a tool penetrates through the operation hole 102 and is in transmission connection with the first driving end 2311, the worm 231 is driven to rotate by the tool, the turbine 232 is driven to rotate with the worm 231, the transmission mechanism 240 is driven to lift the guide column 210 along the axis of the guide column 210, and the height of the caster 220 is adjusted. That is, the laser projection device provided by the embodiment of the present application needs to drive the worm 231 inside the shell 100 to realize the adjustment of the supporting height of the caster 220.

[0084] The guide column 210 of the above laser projection device is driven by the driving structure and transmission mechanism 240 to make the guide column 210 ascend and descend along its axial direction. The driving mechanism 230 is a worm gear 231 transmission structure with self-locking function. When the caster 220 or the guide column 210 is accidentally touched, the accidental touch force is less than the force between the worm gear 231, so as to ensure that the guide column 210 will not ascend and descend due to accidental touch, avoid the height change of the caster 220 caused by accidental touch, and further avoid the picture displacement problem of the main machine.

[0085] In some embodiments, as shown in Figure 2 The shell 100 includes a bottom plate 110, and the bottom plate 110 is formed with an adjusting hole 101. Figure 3 As shown in The caster adjusting structure 200 further includes a bracket 260 installed on the bottom plate 110 towards the inner side surface of the shell 100, and the driving mechanism 230 and the transmission mechanism 240 are installed on the bottom plate 110 through the bracket 260.

[0086] Figure 3 In one embodiment, the shell 100 includes a bottom plate 110, and the caster adjusting structure 200 is installed on the bottom plate 110. As shown in The caster adjusting structure 200 includes a guide column 210, a caster 220, a bracket 260, a driving mechanism 230 and a transmission mechanism 240; the driving mechanism 230 includes a turbine 232 and a worm 231, and the driving mechanism 230 and the transmission mechanism 240 are both installed on the inner surface of the shell 100 through the bracket 260. The guide column 210 penetrates through the adjusting hole 101 on the bottom plate 110 and is in transmission connection with the transmission mechanism 240.

[0087] Figure 4 Another structure diagram of a shell bottom plate in another laser projection device is shown; Figure 5 Another structure diagram of an adapter plate in another caster adjusting structure is shown; Figure 6 A mounting structure diagram of a caster adjusting structure and a shell bottom plate in a laser projection device is shown; Figure 7 For Figure 6 The enlarged view in A. Figure 8 Another structure diagram of a caster adjusting structure is shown; Figure 9 For Figure 8 The exploded view.

[0088] In some embodiments, as shown in Figure 4 The shell 100 includes a bottom plate 110, and the bottom plate 110 is formed with a first hole 101a;

[0089] As shown in Figures 5-7As shown, the caster adjustment structure 200 further comprises: an adapter plate 270 and a bracket 260; the adapter plate 270 is installed on the bottom plate 110 towards the inner side surface of the shell 100; the second hole 101b is formed on the adapter plate 270; the second hole 101b and the first hole 101a coaxially communicate to form the adjustment hole 101; the bracket 260 is installed on the side surface of the adapter plate 270 away from the bottom plate 110.

[0090] The driving mechanism 230 and the transmission mechanism 240 are installed on the adapter plate 270 through the bracket 260.

[0091] In one embodiment, as shown in Figures 4-7 The shell 100 comprises a bottom plate 110, and the caster adjustment structure 200 is installed on the bottom plate 110 through the adapter plate 270. The first hole 101a on the bottom plate 110 and the second hole 101b on the adapter plate 270 cooperate to form the adjustment hole 101 through which the guide column 210 penetrates. As shown in Figure 8 and Figure 9 The caster adjustment structure 200 comprises the adapter plate 270, the guide column 210, the caster 220, the bracket 260, the driving mechanism 230 and the transmission mechanism 240; referring to Figure 6 and Figure 7 The adapter plate 270 is installed on the inner surface of the bottom plate 110, and the second hole 101b on the adapter plate 270 is coaxially communicated with the first hole 101a on the bottom plate 110. The driving mechanism 230 comprises a worm 232 and a worm gear 231, and the driving mechanism 230 and the transmission mechanism 240 are both installed on the side of the adapter plate 270 away from the inner surface of the bottom plate 110 through the bracket 260. The guide column 210 penetrates the first hole 101a on the bottom plate 110 and the second hole 101b on the adapter plate 270 and is in transmission connection with the transmission mechanism 240, as shown in Figure 8 It should be noted that, for the convenience of showing the caster 220, Figure 8 The bottom plate 110 is not shown in

[0092] Figure 10 A structure diagram of a bracket in a laser projection device is shown.

[0093] In some embodiments, as shown in Figure 10As shown, the bracket 260 comprises a first side plate 261, a second side plate 262, and a top plate 263 connecting the first side plate 261 and the second side plate 262, and the first side plate 261, the second side plate 262, and the third side plate are connected to form a gantry structure. The top plate 263 is provided with two support portions 2631 for mounting the screw rod, and each support portion 2631 has a support groove 2631a. The two support portions 2631 are arranged at intervals for rotating the two ends of the support screw rod. The top plate 263 is further provided with a through hole 2632 allowing the transmission mechanism 240 to pass through. The first side plate 261 is provided with two bottom fixing ends 264 at an end away from the top plate 263, and the two bottom fixing ends 264 are arranged at two corners of the first side plate 261; the second side plate 262 is provided with two bottom fixing ends 264 at an end away from the top plate 263, and the two bottom fixing ends 264 are arranged at two corners of the second side plate 262; the four bottom fixing ends 264 have second fixing holes 2641 for cooperating with the second fasteners 290 to fix the bottom plate 110 to the bottom plate 110 or the adapter plate 270. The bottom fixing end 264 can be bent from the first side plate 261 or the second side plate 262, or can be an independent plate welded to the corner of the first side plate 261 or the second side plate 262.

[0094] In an embodiment, the bracket 260 is formed by bending a strip-shaped plate into a gantry structure having the first side plate 261, the second side plate 262, and the third side plate.

[0095] In an embodiment, as shown in Figure 9 , the four bottom fixing ends 264 of the bracket 260 are fixed to the adapter plate 270 by the second fasteners 290 such as screws.

[0096] In an embodiment, as shown in Figure 2 and Figure 3 , the bottom plate 110 is provided with second mounting holes 112 cooperating with the second fixing members.

[0097] In an embodiment, as shown in Figure 5 , the adapter plate 270 is provided with second mounting holes 272 cooperating with the second fixing members.

[0098] Figure 11 A structural schematic diagram of a driving mechanism is shown.

[0099] In some embodiments, as shown in Figure 11 , the first driving end 2311 is formed with a driving groove 2311a; the driving groove 2311a is any one of a straight groove, a cross groove, or a polygonal groove.

[0100] As shown in Figure 11As shown, the first driving end 2311 of the worm 231 is formed with a driving slot 2311a, which is a straight slot. The driving slot 2311a faces the operation hole 102, and a tool such as a straight screwdriver can be inserted into the driving slot 2311a through the operation hole 102 to drive the worm 231 to rotate. In turn, the worm 231 drives the turbine 232 to rotate, and the driving mechanism 240 drives the guide column 210 to move along the axis of the guide column 210, thereby adjusting the height of the caster 220.

[0101] In another embodiment, the driving slot 2311a is a cross slot, and a matching tool is a cross screwdriver. The cross screwdriver is inserted into the cross slot through the operation hole 102 to drive the worm 231 to rotate, and the turbine 232 engaged with the worm 231 rotates accordingly. The driving mechanism 240 drives the guide column 210 to move along the axis of the guide column 210, thereby adjusting the height of the caster 220.

[0102] In another embodiment, the driving slot 2311a is a pentagonal slot, and a matching tool is a screwdriver with a pentagonal cross section. The screwdriver is inserted into the pentagonal slot through the operation hole 102 to drive the worm 231 to rotate, and the turbine 232 engaged with the worm 231 rotates accordingly. The driving mechanism 240 drives the guide column 210 to move along the axis of the guide column 210, thereby adjusting the height of the caster 220.

[0103] In another embodiment, the driving slot 2311a is a hexagonal slot, and a matching tool is a screwdriver with a hexagonal cross section. The screwdriver is inserted into the hexagonal slot through the operation hole 102 to drive the worm 231 to rotate, and the turbine 232 engaged with the worm 231 rotates accordingly. The driving mechanism 240 drives the guide column 210 to move along the axis of the guide column 210, thereby adjusting the height of the caster 220.

[0104] In some embodiments, the first driving end 2311 is formed with a driving protrusion, and the driving protrusion has a polygonal cross section along the radial direction of the worm 231.

[0105] In one embodiment, the first driving end 2311 of the worm 231 is formed with a driving protrusion, and the cross section of the driving protrusion is triangular. The driving protrusion faces the operation hole 102, and a tool such as a screwdriver with a triangular recess can be inserted into the triangular recess through the operation hole 102 to drive the worm 231 to rotate. In turn, the worm 231 drives the turbine 232 to rotate, and the driving mechanism 240 drives the guide column 210 to move along the axis of the guide column 210, thereby adjusting the height of the caster 220.

[0106] In an embodiment, the first driving end 2311 of the worm 231 is formed with a driving protrusion, and the cross section of the driving protrusion is pentagonal. The driving protrusion faces the operation hole 102, and a tool such as a screwdriver with a pentagonal recess can penetrate the operation hole 102 and embed the driving protrusion into the pentagonal recess, so that the screwdriver is in driving connection with the worm 231, and the worm 231 can be driven to rotate by rotating the screwdriver. Then, the turbine 232 is driven to rotate by the worm 231, the guide column 210 is driven to move along the axis of the guide column 210 by the transmission mechanism 240, and the height of the caster 220 is adjusted.

[0107] In an embodiment, the first driving end 2311 of the worm 231 is formed with a driving protrusion, and the cross section of the driving protrusion is hexagonal. The driving protrusion faces the operation hole 102, and a tool such as a screwdriver with a hexagonal recess can penetrate the operation hole 102 and embed the driving protrusion into the hexagonal recess, so that the screwdriver is in driving connection with the worm 231, and the worm 231 can be driven to rotate by rotating the screwdriver. Then, the turbine 232 is driven to rotate by the worm 231, the guide column 210 is driven to move along the axis of the guide column 210 by the transmission mechanism 240, and the height of the caster 220 is adjusted.

[0108] The laser projection device provided by the embodiment of the application can be manually adjusted by means of a tool when the height of the caster 220 needs to be adjusted, and the driving end of the worm 231 is located inside the shell 100, so that the height of the caster 220 cannot be changed due to accidental touch.

[0109] In some embodiments, in order to facilitate the height adjustment of the caster 220, the electric adjustment of the height of the caster 220 can also be realized.

[0110] In some embodiments, the driving mechanism 230 further comprises a motor.

[0111] As shown in Figure 11 the worm 231 further comprises a second driving end 2312 opposite to the first driving end 2311 and in driving connection with the motor.

[0112] In an embodiment, the shell 100 is internally provided with a motor in driving connection with the worm 231, for driving the worm 231 to rotate, and the turbine 232 engaged with the worm 231 is driven to rotate, the guide column 210 is driven to move along the axis of the guide column 210 by the transmission mechanism 240, and the height of the caster 220 is adjusted. Figure 11 As shown in

[0113] In some embodiments, the second driving end 2312 is formed with a driving groove 2311a, and the driving groove 2311a is any one of a straight groove, a cross groove or a polygonal groove, for facilitating the driving connection with the motor.

[0114] In some embodiments, the second driving end 2312 is formed with a driving protrusion; the driving protrusion is in any one of a linear shape, a cross shape or a polygonal shape in a radial cross section of the worm 231, facilitating the transmission connection with the motor.

[0115] In some embodiments, as shown in Figure 9 The transmission mechanism 240 comprises a columnar structure 241 and a follower 242; the columnar structure 241 is coaxially transmission connected with the turbine 232; a circumferential surface of the columnar structure 241 is formed with a spiral lifting groove 2411; the follower 242 is slidingly connected with the spiral lifting groove 2411; an end of the follower 242 protruding from the spiral lifting groove 2411 is transmission connected with the guide column 210.

[0116] Figure 12 A structural schematic diagram of a turbine is shown; Figure 13 A structural schematic diagram of a columnar structure is shown.

[0117] In an embodiment, as shown in Figure 12 The turbine 232 has a middle assembly hole 2322 for transmission connection with the columnar structure 241, as shown in Figure 8 As shown in Figure 13 The columnar structure 241 comprises opposite first and second mounting ends 2412 and 2413; the first mounting end 2412 is used for assembly with the assembly hole 2322 of the turbine 232 by penetrating the through hole 2632 on the bracket 260, and the second mounting end 2413 is used for assembly with the bottom plate 110 or the adapter plate 270. As shown in Figure 12 The assembly hole 2322 is a D-shaped hole, and the first mounting end 2412 is a D-shaped structure matching the shape of the D-shaped hole, as shown in Figure 13 The first mounting end 2412 penetrates the assembly hole 2322 from below the turbine 232 and is coaxially rotationally connected with the turbine 232.

[0118] In an embodiment, as shown in Figure 2 and Figure 3 The bottom plate 110 is provided with a first mounting hole 111 cooperating with the second mounting end 2413.

[0119] In an embodiment, as shown in Figure 5 The adapter plate 270 is provided with a first mounting hole 271 cooperating with the second mounting end 2413.

[0120] In combination with Figure 8 and Figure 9 The first mounting end 2412 of the columnar structure 241 is fixedly connected with the turbine 232 by a first fastener 280. The first fastener 280 is a screw. As shown in Figure 13As shown, the end surface of the first mounting end 2412 is formed with a first fixing hole 2412a for threadedly cooperating with the first fastener 280. Referring to Figure 8 and Figure 9 , the nut of the first fastener 280 abuts against the upper surface of the turbine 232 on the side surface of the stud threadedly cooperating with the first mounting end 2412, avoiding the cylindrical structure 241 from being pulled out from the lower end of the turbine 232.

[0121] In an embodiment, in order to avoid the first fastener 280 affecting other components inside the housing 100, the upper edge surface of the turbine 232 is formed with a sunken platform 2321, as shown. Figure 12 In combination with Figure 8 and Figure 9 , the nut of the first fastener 280 abuts against the recessed surface of the sunken platform 2321, so that the nut does not protrude from the upper surface of the turbine 232.

[0122] In an embodiment, the middle region of the cylindrical structure 241 has a radial dimension greater than that of the first mounting end 2412, and the middle region of the cylindrical structure 241 has a radial dimension greater than that of the second mounting end 2413, as shown. Figure 13 The middle region of the cylindrical structure 241 is provided with a helical lifting groove 2411.

[0123] In some embodiments, the cylindrical structure 241 comprises a middle column and a sleeve sleeved on the middle column, the middle column comprises opposite first and second mounting ends 2412 and 2413, and the sleeve is sleeved on the middle column and exposes the first and second mounting ends 2412 and 2413. The sleeve is hollowly designed with a helical lifting groove 2411. In an embodiment, the sleeve is interference-fitted on the middle column.

[0124] In an embodiment, the sleeve and the middle column are of an integral structure.

[0125] In some embodiments, as shown in Figure 8 and Figure 9 , the caster adjusting structure 200 further comprises a guide sleeve 250 fixedly arranged on the inner wall of the adjusting hole 101.

[0126] The guide column 210 is slidingly connected inside the guide sleeve 250; the guide column 210 comprises first and second transmission ends 211 and 212; the first transmission end 211 is in transmission connection with the follower 242; and the second transmission end 212 is coaxially in transmission connection with the caster 220.

[0127] Figure 14 A schematic diagram of the mounting structure of a guide column, a follower and a guide sleeve in a laser projection device is shown; Figure 15 A schematic diagram of the mounting structure of a guide column and a follower in a laser projection device is shown; Figure 16A structural diagram of a guide post in a laser projection device is shown. Figure 17 A structural diagram of a follower in a laser projection device is shown. Figure 18 A structural diagram of a guide sleeve in a laser projection device is shown.

[0128] In some embodiments, as shown in Figures 14-16 The guide post 210 includes opposite first transmission end 211 and second transmission end 212, the first transmission end 211 is provided with a connecting hole 2111 for transmission connection with the follower 242, as shown in Figure 15 The second transmission end 212 is used to penetrate the adjusting hole 101 and transmission connection with the caster 220. The follower 242 includes a connecting end 2421 and a sliding end 2422, as shown in Figure 17 The connecting end 2421 is used to assemble with the connecting hole 2111 of the guide post 210. In one embodiment, the connecting end 2421 is assembled with the connecting hole 2111 in interference, as shown in Figure 14 And Figure 15 The sliding end 2422 is assembled with the spiral lifting groove 2411 of the columnar structure 241, the sliding end 2422 is inserted into the spiral lifting groove 2411 and can be lifted spirally along the track of the spiral lifting groove 2411. As shown in Figure 18 The guide sleeve 250 is provided with a guide hole 251 in the middle, the guide hole 251 is used to slide with the guide post 210. The second transmission end 212 of the guide post 210 penetrates the guide hole 251 and is used to transmission connection with the caster 220, as shown in Figure 14 The inner wall contour of the guide hole 251 is matched with the outer contour shape of the guide post 210, and the size of the guide hole 251 is slightly larger than the radial dimension of the guide post 210.

[0129] In one embodiment, the sliding end 2422 of the follower 242 includes a body and an annular sheet sleeved on the body, the body and the annular sheet are assembled with balls therebetween, and the annular sheet rotates relative to the body. When the annular sheet contacts with the groove wall of the spiral lifting groove 2411, the rotation of the annular sheet relative to the body can reduce the friction between the follower 242 and the spiral lifting groove 2411, so that it is more labor-saving to adjust the support height of the caster 220.

[0130] In one embodiment, as shown in Figure 18 The guide sleeve 250 includes a cap end 252 and a column end 253, the column end 253 is used to insert into the adjusting hole 101 of the bottom plate 110 and interference fit with the inner wall of the adjusting hole 101; the cap end 252 is used to protrude from the bottom plate 110 to the inner side surface of the shell 100.

[0131] In another embodiment, as shown in Figure 18As shown, the guide sleeve 250 includes a cap end 252 and a column end 253, the column end 253 is used to be inserted into the second hole 101b of the adapter plate 270 and is in interference fit with the inner wall of the second hole 101b; the cap end 252 is used to protrude from the surface of the adapter plate 270 away from the bottom plate 110.

[0132] Figure 19 A structural schematic diagram of a guide column in a laser projection device is shown; Figure 20 A structural schematic diagram of a caster in a laser projection device is shown.

[0133] In some embodiments, as Figure 19 shown, the guide column 210 is a light pole, which can reduce the friction of the guide column 210 sliding relative to the sleeve or the inner wall of the adjusting hole 101, and has small power loss, so that it is more labor-saving to adjust the support height of the caster 220.

[0134] In one embodiment, as Figure 19 shown, the guide column 210 includes opposite first and second transmission ends 211 and 212, and the second transmission end 212 has a threaded column 2121 used for transmission connection with the caster 220. As Figure 20 shown, the caster 220 includes a foot 221 and a connecting rod 222, one end of the connecting rod 222 is connected with the foot 221, and the other end has a threaded hole 2221 used for threaded connection with the threaded column 2121 of the second transmission end 212.

[0135] The laser projection device provided by the embodiments of the present application can be adjusted in height by rotating the tool on the side surface of the shell 100. When it is necessary to adjust the height of the caster 220, the worm 231 is rotated at one end position of the worm 231 in the worm and gear mechanism of the worm wheel 232 by rotating the worm wheel 232 with the tool, the worm wheel 232 engaged with the worm 231 is rotated accordingly, the columnar structure 241 is fixed on the worm wheel 232, the columnar structure 241 and the worm wheel 232 are synchronously rotated, the columnar structure 241 has a designed spiral lifting groove 2411, can be engaged and matched to drive the follower 242 fixed on the guide column 210 to move up and down, the caster 220 is fixed on the guide column 210, and finally the caster 220 is moved up and down to realize height adjustment. The driving mechanism 230 of the worm wheel 232 and the worm 231 is designed to realize self-locking, so that the caster adjusting structure 200 can only be used with the tool and adjusted according to the above method, and the caster 220 cannot be rotated in reverse direction, and thus the problem of host picture displacement caused by accidental touch of the caster 220 can be prevented.

[0136] Figure 21 A distribution schematic diagram of a caster adjusting structure in a laser projection device is shown; Figure 22 A distribution schematic diagram of a caster adjusting structure in a laser projection device is shown.

[0137] In some embodiments, asFigure 21 As shown, the housing 100 includes a bottom surface 113; the bottom surface 113 has two first side edges 113a arranged along a first direction and two second side edges 113b arranged along a second direction; wherein the second direction is perpendicular to the first direction;

[0138] The laser projection device includes multiple caster adjustment structures 200; the multiple caster adjustment structures 200 are spaced apart on the bottom surface 113 near a first side 113a.

[0139] In one embodiment, such as Figure 21 As shown, the bottom surface 113 of the housing 100 is rectangular, and has two opposing first sides 113a and two opposing second sides 113b; the two second sides 113b are respectively connected between the two first sides 113a. Two caster adjustment structures 200 are provided on the bottom surface 113 of the housing 100, and both caster adjustment structures 200 are close to the same first side 113a. The projection angle can be adjusted by adjusting the height of one side of the laser projection device.

[0140] In some embodiments, such as Figure 22 As shown, the housing 100 includes a bottom surface 113; the bottom surface 113 has a plurality of corner regions 113c;

[0141] The laser projection equipment includes: multiple caster adjustment structures 200; the multiple caster adjustment structures 200 are set in a one-to-one correspondence with the number and position of multiple corner zones 113c.

[0142] In one embodiment, such as Figure 22 As shown, the bottom surface 113 of the housing 100 is rectangular, and the bottom surface 113 has four corner areas 113c. Four caster adjustment structures 200 are arranged on the bottom surface 113 of the housing 100, and each of the four caster adjustment structures 200 is located near one corner area 113c. The four caster adjustment structures 200 make the adjustment of the projection angle of the laser projection device more flexible.

[0143] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A laser projection device, characterized in that, include: The housing has an adjustment hole formed at its bottom. and Caster adjustment mechanism; The caster adjustment structure includes: A guide post, the first end of which passes through the adjustment hole and extends into the housing, and the guide post is slidably connected to the inner wall of the adjustment hole; Casters are connected to the second end of the guide post; A drive mechanism is located inside the housing; the drive mechanism includes: The worm gear; the worm gear includes: a first drive end; and Turbine; connected to the worm gear drive; and A transmission mechanism, located inside the housing, drives the turbine and the guide column to move the guide column up and down along its axial direction; The housing has an operating hole for exposing the first drive end.

2. The laser projection device according to claim 1, characterized in that, The first driving end has a driving slot formed thereon; The driving groove is any one of a slotted groove, a cross groove, or a polygonal groove; or, the first driving end has a driving protrusion. The drive protrusion has a polygonal cross-section along the radial direction of the worm.

3. The laser projection device according to claim 1, characterized in that, The drive mechanism also includes: motor; The worm gear also includes: The second drive end is opposite to the first drive end and is connected to the motor drive.

4. The laser projection device according to claim 3, characterized in that, The transmission mechanism includes: A columnar structure is coaxially connected to the turbine; a spiral lifting groove is formed on the circumferential surface of the columnar structure; and A follower is slidably connected to the spiral lifting groove; one end of the follower protruding from the spiral lifting groove is connected to the guide column in a driving connection.

5. The laser projection device according to claim 4, characterized in that, The caster adjustment mechanism also includes: The guide sleeve is fixed to the inner wall of the adjustment hole; The guide post is slidably connected inside the guide sleeve; the guide post includes: The first transmission end is connected to the follower in a transmission manner; and The second transmission end is coaxially connected to the caster.

6. The laser projection device according to claim 1, characterized in that, The guide post is a smooth rod.

7. The laser projection device according to any one of claims 1-6, characterized in that, The housing includes: A base plate having the adjustment holes formed thereon; The caster adjustment mechanism also includes: The bracket is installed on the surface of the base plate facing the inside of the housing; The drive mechanism and the transmission mechanism are mounted on the base plate via the bracket.

8. The laser projection device according to any one of claims 1-6, characterized in that, The housing includes: A base plate having a first hole formed thereon; The caster adjustment mechanism also includes: Adapter plate; mounted on the surface of the base plate facing the interior of the housing; a second hole is formed on the adapter plate; The second hole is coaxially connected to the first hole to form the adjustment hole; and The bracket is installed on the surface of the adapter plate opposite to the base plate. The drive mechanism and the transmission mechanism are mounted on the adapter plate via the bracket.

9. The laser projection device according to any one of claims 1-6, characterized in that, The housing includes: The bottom surface has two first sides arranged along a first direction and two second sides arranged along a second direction; wherein the second direction is perpendicular to the first direction. The laser projection device includes: Multiple caster adjustment structures; the multiple caster adjustment structures are spaced apart on the bottom surface near one of the first side edges.

10. The laser projection device according to any one of claims 1-6, characterized in that, The housing includes: The bottom surface has multiple corner areas; The laser projection device includes: Multiple caster adjustment structures are provided; the number and position of the multiple caster adjustment structures correspond one-to-one with the number and position of the multiple corner areas.

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