Laser projection equipment

Abstract

The utility model relates to the field of projection, and discloses laser projection equipment. A laser projection device includes a housing and a caster adjustment structure. A threaded hole is formed in the bottom of the shell. The trundle adjusting structure comprises a connecting rod, a trundle, an elastic clamping assembly and an unlocking assembly. The connecting rod is in threaded connection with the threaded hole, and the first end of the connecting rod penetrates through the threaded hole and extends into the shell. The caster is connected to the second end of the connecting rod. The elastic clamping assembly is located in the shell. The elastic clamping assembly comprises a clamping space used for clamping the connecting rod. The unlocking assembly comprises an unlocking rod and an elastic reset piece. The unlocking rod is used for being inserted into the clamping space to enlarge the size of the clamping space so that the connecting rod can ascend and descend in the axis direction of the unlocking rod. The elastic reset piece is connected to the unlocking rod and used for providing acting force away from the clamping space for the unlocking rod all the time. An operation hole used for exposing the unlocking rod 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] This application relates to the field of projection technology, and in particular to a laser projection device. Background Technology

[0002] After installation, laser projection equipment requires tilt adjustment via casters. The current solution is to fix the casters to the bottom of the main unit with threads, and adjust the height of the casters by rotating the threads to achieve the purpose of tilt adjustment. After the casters are adjusted, they are prone to being accidentally touched, causing the height of the casters to change, which in turn causes the image on the main unit to shift. Utility Model Content

[0003] This application discloses a laser projection device for preventing changes in caster height due to accidental touch.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A laser projection device, comprising:

[0006] The housing; a threaded hole is formed at the bottom of the housing; and

[0007] Caster adjustment structure; the caster adjustment structure includes:

[0008] A connecting rod is threadedly connected to the threaded hole, and the first end of the connecting rod passes through the threaded hole and extends into the interior of the housing;

[0009] Casters are connected to the second end of the connecting rod;

[0010] A resilient clamping assembly is located inside the housing; the resilient clamping assembly includes a clamping space for clamping the connecting rod; and

[0011] Unlocking component, the unlocking component includes:

[0012] Unlocking lever, used to insert into the clamping space to expand the size of the clamping space so that the connecting rod can move up and down along its axial direction; and

[0013] An elastic reset element, connected to the unlocking lever, is used to always provide a force to the unlocking lever away from the clamping space;

[0014] The housing has an operating hole for exposing the unlocking rod.

[0015] In the laser projection device provided in this application embodiment, the caster adjustment structure, by introducing elastic clamping components and unlocking components, not only achieves height adjustment but also possesses self-locking characteristics, effectively solving the problem of caster height changes caused by accidental touches in existing designs. This not only improves the stability and reliability of the device but also enhances the user experience.

[0016] In some embodiments, the resilient clamping assembly includes:

[0017] A first clamping arm, wherein a first shaft hole is formed at the first end of the first clamping arm;

[0018] The second clamping arm has a second shaft hole formed at its first end;

[0019] A pivot shaft passes through the first shaft hole and the second shaft hole in sequence and pivotally connects the first clamping arm and the second clamping arm, so that the first clamping arm and the second clamping arm form the clamping space;

[0020] A first elastic element, connected to the second end of the first clamping arm, is used to consistently provide a force close to the second end of the first clamping arm; and

[0021] The second elastic element is connected to the second end of the second clamping arm and is used to always provide a force close to the second end of the first clamping arm to the second end of the second clamping arm.

[0022] In some embodiments, the housing includes:

[0023] A first fixing part is used to connect the end of the first elastic member opposite to the first clamping arm; and

[0024] The second fixing part is used to connect the second elastic member to the end opposite to the second clamping arm.

[0025] In some embodiments, the first clamping arm has an arc-shaped limiting groove on the side facing the second clamping arm, which is used to match the shape of the connecting rod.

[0026] And / or, the second clamping arm has an arc-shaped limiting groove on the side facing the first clamping arm, for matching the shape of the connecting rod.

[0027] In some embodiments, the unlocking lever includes:

[0028] The unlocking end is used to insert between the first clamping arm and the second clamping arm; and

[0029] The actuating end is located outside the housing;

[0030] The elastic reset member is located outside the housing, with one end connected to the actuating end and the other end connected to the housing.

[0031] In some embodiments, the unlocking end has a radial dimension that gradually decreases along the direction from the trigger end to the unlocking end to form a tapered guide surface.

[0032] In some embodiments, the housing includes:

[0033] A base plate having the threaded hole formed thereon;

[0034] The elastic clamping assembly is fixed to the surface of the base plate facing the inside of the housing.

[0035] In some embodiments, the housing includes:

[0036] A base plate, wherein the threaded hole is formed on the base plate;

[0037] The caster adjustment mechanism also includes:

[0038] An adapter plate is mounted on the surface of the base plate facing the interior of the housing. A first clearance hole is formed on the adapter plate to allow the connecting rod to pass. The first clearance hole is coaxially connected to the threaded hole.

[0039] The adapter plate has a second clearance hole for avoiding the unlocking rod; the second clearance hole is coaxially connected to the operating hole.

[0040] The elastic clamping assembly is fixed to the surface of the adapter plate opposite to the base plate.

[0041] In some embodiments, the housing includes:

[0042] 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.

[0043] The laser projection device includes:

[0044] Multiple caster adjustment structures; the multiple caster adjustment structures are spaced apart on the bottom surface near one of the first side edges.

[0045] In some embodiments, the housing includes:

[0046] The bottom surface has multiple corner areas;

[0047] The laser projection device includes:

[0048] 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. Attached Figure Description

[0049] Figure 1 This is a schematic diagram of the structure of a laser projection device provided in an embodiment of this application;

[0050] Figure 2A schematic diagram of the installation structure of the caster adjustment structure and the housing base plate in a laser projection device provided in this application embodiment;

[0051] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0052] Figure 4 A schematic diagram of the installation structure of the caster adjustment structure and the housing base plate in another laser projection device provided in this application embodiment;

[0053] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0054] Figure 6 An exploded view of a caster adjustment structure in a laser projection device provided in this application embodiment;

[0055] Figure 7 A three-dimensional diagram of the caster adjustment structure in the initial state of a laser projection device provided in an embodiment of this application;

[0056] Figure 8 A schematic diagram of one side of the caster adjustment structure in the initial state of a laser projection device provided in an embodiment of this application;

[0057] Figure 9 This is a schematic diagram of the other side of the caster adjustment structure in the initial state of a laser projection device provided in an embodiment of this application;

[0058] Figure 10 A three-dimensional diagram of a caster adjustment structure in an adjustable state in a laser projection device provided in an embodiment of this application;

[0059] Figure 11 A schematic diagram of the caster adjustment structure in a laser projection device provided in this application embodiment, showing one side of the structure in the adjustment state;

[0060] Figure 12 This is a schematic diagram of the other side of the caster adjustment structure in the adjustment state in a laser projection device provided in an embodiment of this application;

[0061] Figure 13 An exploded view of a caster adjustment structure in another laser projection device provided in this application embodiment;

[0062] Figure 14 A three-dimensional view of a converter plate in a laser projection device provided in an embodiment of this application;

[0063] Figure 15 A schematic diagram of one side structure of an adapter plate in a laser projection device provided in an embodiment of this application;

[0064] Figure 16 A three-dimensional view of the first clamping arm in a laser projection device provided in an embodiment of this application;

[0065] Figure 17 A three-dimensional view of the second clamping arm in a laser projection device provided in this application embodiment Figure 1 ;

[0066] Figure 18 A three-dimensional view of the second clamping arm in a laser projection device provided in this application embodiment Figure 2 ;

[0067] Figure 19 This is a schematic diagram showing the distribution of the caster adjustment structure in a laser projection device according to an embodiment of this application;

[0068] Figure 20 This is a schematic diagram showing the distribution of the caster adjustment structure in another laser projection device provided in an embodiment of this application;

[0069] Icons: 100-House; 200-Cast adjustment structure; 110-Base plate; 120-Adapter plate; 130-First fixing part; 140-Second fixing part; 150-Self-locking component; 101-Threaded hole; 102-Operating hole; 103-Self-locking hole; 111-Bottom surface; 131-First mounting groove; 141-Second mounting groove; 111a-First side; 111b-Second side; 111c-Corner area; 1201-First clearance hole; 1202-Second clearance hole; 1203-Self-locking hole; 1204-Mounting hole; 210-Connecting rod; 220-Cast; 230-Elastic clamping Components; 240-Unlocking component; 2301-Clamping space; 231-First clamping arm; 232-Second clamping arm; 233-Pivot shaft; 234-Fixing member; 235-First elastic member; 236-Second elastic member; 2311-First shaft hole; 2312-Arc-shaped limiting groove; 2313-First unlocking part; 2321-Second shaft hole; 2322-Arc-shaped limiting groove; 2323-Second unlocking part; 2324-Elastic member connecting part; 241-Unlocking rod; 242-Elastic reset member; 243-Plug; 2411-Unlocking end; 2412-Touching end; 2411a-Conical guide surface. Detailed Implementation

[0070] First, let me introduce the application scenario of this application: To ensure a good user experience and the projection effect of laser projection equipment, multiple adjustable casters are typically installed between the bottom of the laser projection equipment and its supporting surface, such as a desktop. These casters are threaded to the bottom of the laser projection equipment and can be raised or lowered by rotating. By adjusting the height of different casters, the projection angle of the laser projection equipment can be adjusted to ensure the best projection effect. However, due to accidental touches or desktop vibrations, the casters may rotate to some extent, which may affect the actual projection angle of the laser projection equipment, thereby reducing the user experience.

[0071] Based on the above application scenarios, this application provides a laser projection device that can prevent changes in caster height due to accidental touch, thereby ensuring user experience.

[0072] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships, for example, A and / or B can represent: A alone, A and B at the same time, and B alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0073] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0074] Figure 1 A schematic diagram of a laser projection device is shown. Figure 2 A schematic diagram of the installation structure of the caster adjustment structure and the base plate of the housing in a laser projection device is shown. Figure 3 It shows Figure 2 Enlarged view of point A in the middle; Figure 4 A schematic diagram of the installation structure of the caster adjustment structure and the base plate of the housing in another laser projection device is shown; Figure 5 It shows Figure 4 Enlarged view at point B in the middle; Figure 6An exploded view of a caster adjustment structure in a laser projection device is shown.

[0075] like Figures 1 to 3 As shown in the illustration, this application provides a laser projection device, including a housing 100 and a caster adjustment structure 200. A threaded hole 101 is formed at the bottom of the housing 100. The caster adjustment structure 200 includes a connecting rod 210, a caster 220, an elastic clamping assembly 230, and an unlocking assembly 240. The connecting rod 210 is threadedly connected to the threaded hole 101, and a first end of the connecting rod 210 passes through the threaded hole 101 and extends into the housing 100. The caster 220 is connected to the second end of the connecting rod 210. The elastic clamping assembly 230 is located inside the housing 100; and the elastic clamping assembly 230 includes a clamping space 2301 for clamping the connecting rod 210. The unlocking assembly 240 includes an unlocking lever 241 and an elastic reset member 242. The unlocking lever 241 is inserted into the clamping space 2301 to expand the size of the clamping space 2301 so that the connecting rod 210 can move up and down along its axial direction. The elastic reset member 242 is connected to the unlocking lever 241 and is used to always provide the unlocking lever 241 with a force away from the clamping space 2301. The housing 100 has an operating hole 102 for exposing the unlocking lever 241.

[0076] In one embodiment, such as Figure 1 As shown, a caster adjustment structure 200 is installed at the bottom of the housing 100 of the laser projection device. The caster adjustment structure 200 supports the housing 100, and the projection angle of the laser projection device can be adjusted by adjusting the support height of the caster adjustment structure 200.

[0077] like Figure 2 As shown, combined with Figure 6 The housing 100 is the outer shell of the equipment, and a threaded hole 101 is formed at the bottom for connecting the caster adjustment structure 200.

[0078] like Figure 3As shown, the caster adjustment structure 200 includes a connecting rod 210, a caster 220, an elastic clamping assembly 230, and an unlocking assembly 240. The connecting rod 210 connects the housing 100 and the caster 220 to achieve height adjustment. Specifically, the first end of the connecting rod 210 is threadedly connected to a threaded hole 101 at the bottom of the housing 100, and the second end is connected to the caster 220. The first end passes through the threaded hole 101 and extends into the housing 100, allowing axial movement during adjustment. The caster 220 supports the equipment, is connected to the second end of the connecting rod 210, and adjusts its height as the connecting rod 210 rises and falls. The elastic clamping assembly 230 is located inside the housing 100 and has a clamping space 2301 for clamping the connecting rod 210, restricting its degree of freedom along the axial direction. The unlocking assembly 240 provides a mechanism that allows the user to unlock and adjust the height of the connecting rod 210 when needed. The unlocking assembly 240 includes an unlocking lever 241 and a resilient reset member 242. The unlocking lever 241 is inserted into the clamping space 2301. By expanding the size of the clamping space 2301, the connecting rod 210 can move freely up and down along its axis. The resilient reset member 242 is connected to the unlocking lever 241 and always provides a force away from the clamping space 2301 to ensure that the unlocking lever 241 automatically resets after operation. An operating hole 102 formed on the housing 100 exposes the unlocking lever 241 for user convenience.

[0079] In some embodiments, the unlocking rod 241 passes through the operation hole 102, with one end located inside the housing 100 and the other end located outside the housing 100, facilitating unlocking operations.

[0080] In other embodiments, the unlocking lever 241 is located inside the housing 100 and can be driven to unlock by inserting a tool into the operating hole 102.

[0081] In the initial state, the elastic clamping assembly 230 is clamped, the connecting rod 210 is fixed, and the height of the caster 220 remains unchanged. When the height of the caster 220 needs to be adjusted, the user inserts the unlocking rod 241 into the clamping space 2301 through the operating hole 102. The unlocking rod 241 expands the clamping space 2301, releasing the clamp on the connecting rod 210. The user rotates the connecting rod 210, adjusting its extension length through the threaded connection, thereby changing the height of the caster 220. After adjustment, the user releases the unlocking rod 241, and the elastic reset member 242 pushes the unlocking rod 241 away from the clamping space 2301. The clamping assembly returns to its original state, re-clamping the connecting rod 210 and fixing it in place.

[0082] In the laser projection device provided in this application embodiment, the caster adjustment structure 200, by introducing an elastic clamping component 230 and an unlocking component 240, not only achieves height adjustment but also possesses self-locking characteristics, effectively solving the problem of caster 220 height change caused by accidental contact in existing designs. This not only improves the stability and reliability of the device but also enhances the user experience.

[0083] In some embodiments, such as Figure 2 and Figure 3 As shown, and in combination Figure 6 The housing 100 includes a base plate 110, which has a threaded hole 101; wherein, the elastic clamping assembly 230 is fixed to the surface of the base plate 110 facing the inside of the housing 100.

[0084] In this embodiment, the elastic clamping assembly 230 is directly fixed to the base plate 110, forming a compact and integrated structure, reducing additional connecting parts, simplifying the overall design, and lowering the failure rate. The connecting rod 210 is threaded to the base plate 110 and clamped inside the clamping space 2301 formed by the elastic clamping assembly 230.

[0085] In some embodiments, such as Figure 4 and Figure 5 As shown, and in combination Figure 6 The housing 100 includes a base plate 110, on which a threaded hole 101 is formed. The caster adjustment structure 200 also includes an adapter plate 120, which is mounted on the surface of the base plate 110 facing the interior of the housing 100. The adapter plate 120 has a first clearance hole 1201 for clearance of the connecting rod 210. The first clearance hole 1201 is coaxially connected to the threaded hole 101. The adapter plate 120 has a second clearance hole 1202 for clearance of the unlocking rod 241. The second clearance hole 1202 is coaxially connected to the operating hole 102. The elastic clamping assembly 230 is fixed on the surface of the adapter plate 120 facing away from the base plate 110.

[0086] In this embodiment, the elastic clamping assembly 230 is fixed to the base plate 110 via an adapter plate 120. A first clearance hole 1201 and a second clearance hole 1202 are provided on the adapter plate 120. The first clearance hole 1201 is used to avoid the connecting rod 210. The first clearance hole 1201 is coaxially connected to the threaded hole 101 on the base plate 110, ensuring that the connecting rod 210 can pass through smoothly and remain aligned. The second clearance hole 1202 is used to avoid the unlocking rod 241. The unlocking rod 241 passes through the operating hole 102 and protrudes outside the housing 100. The second clearance hole 1202 is coaxially connected to the operating hole 102, ensuring that the unlocking rod 241 can smoothly insert into and withdraw from the clamping space 2301 along its axis for height adjustment.

[0087] This embodiment, by introducing an adapter plate 120 and multiple clearance holes, not only improves the mechanical stability of the system, but also allows for the modification of existing equipment, which is simple, convenient, and enhances the user experience.

[0088] Understandable, Figure 2 and Figure 3 In the embodiment, the adapter plate 120 and the base plate 110 can also be understood as an integral structure.

[0089] To facilitate the explanation of the specific structure of the caster adjustment structure 200, the following example uses a model with an adapter plate 120.

[0090] Figure 7 A 3D diagram of a caster adjustment structure in a laser projection device in its initial state is shown. Figure 8 A schematic diagram of one side of the caster adjustment structure in the initial state of a laser projection device is shown;

[0091] Figure 9 This diagram shows the other side of the caster adjustment structure in the initial state of a laser projection device; Figure 10 A three-dimensional diagram of a caster adjustment structure in an adjustment state in a laser projection device is shown;

[0092] Figure 11 A schematic diagram of one side of the caster adjustment structure in a laser projection device in the adjustment state is shown; Figure 12 A schematic diagram of the other side of the caster adjustment structure in a laser projection device in the adjustment state is shown.

[0093] In some embodiments, such as Figure 6 and Figure 7 As shown, the elastic clamping assembly 230 includes a first clamping arm 231, a second clamping arm 232, a pivot shaft 233, a first elastic element 235, and a second elastic element 236. A first shaft hole 2311 is formed at the first end of the first clamping arm 231; a second shaft hole 2321 is formed at the first end of the second clamping arm 232; the pivot shaft 233 passes through the first shaft hole 2311 and the second shaft hole 2321 in sequence and pivotally connects the first clamping arm 231 and the second clamping arm 232, so that the first clamping arm 231 and the second clamping arm 232 form a clamping space 2301. The first elastic element 235 is connected to the second end of the first clamping arm 231 and is used to always provide a force close to the second end of the second clamping arm 232. The second elastic element 236 is connected to the second end of the second clamping arm 232 and is used to always provide a force close to the second end of the first clamping arm 231.

[0094] In this embodiment, the first end of the first clamping arm 231 has a first shaft hole 2311 for connecting to the second clamping arm 232 via a pivot shaft 233. The second end of the first clamping arm 231 is connected to a first elastic member 235, which always provides a force close to the second end of the second clamping arm 232. The first end of the second clamping arm 232 has a second shaft hole 2321 for connecting to the first clamping arm 231 via a pivot shaft 233. The second end of the second clamping arm 232 is connected to a second elastic member 236, which always provides a force close to the second end of the first clamping arm 231. The first end of the pivot shaft 233 is fixed to the adapter plate 120, and the second end is locked by a fixing member 234. A pivot shaft 233 passes sequentially through a first shaft hole 2311 and a second shaft hole 2321, connecting the first clamping arm 231 and the second clamping arm 232 together, allowing them to rotate around the pivot shaft 233 to form a variable-sized V-shaped clamping space 2301. A first elastic element 235 and a second elastic element 236, like springs, are respectively installed at the second ends of the first clamping arm 231 and the second clamping arm 232. The force they provide ensures that even without external intervention, the two clamping arms will naturally tend towards a closed state, maintaining the clamping force on the connecting rod 210. When the height of the caster 220 needs to be adjusted, the clamping space 2301 is expanded by inserting the unlocking lever 241, at which point the elastic elements are compressed; once the unlocking lever 241 is removed, the elastic elements return to their original shape, re-clamping the connecting rod 210.

[0095] Under normal conditions, due to the action of the first elastic element 235 and the second elastic element 236, the first clamping arm 231 and the second clamping arm 232 are tightly closed, forming a stable clamping space 2301, which tightly holds the connecting rod 210.

[0096] When the user needs to adjust the height of the caster 220, the unlocking lever can be driven to rise along the operating hole 102 on the housing 100 and enter the clamping space 2301. The presence of the unlocking lever 241 will temporarily open the two clamping arms, increasing the size of the clamping space 2301, allowing the connecting rod 210 to move freely along its axial direction without obstruction.

[0097] After adjustment, the unlocking lever 241 exits the clamping space 2301 under the action of the elastic reset member 242. The first elastic member 235 and the second elastic member 236 will immediately cause the two clamping arms to close again and clamp the connecting rod 210, locking the new position and preventing any accidental height changes.

[0098] This design not only ensures the stability of the equipment during use, but also simplifies the user's process for height adjustment.

[0099] Figure 13An exploded view of the caster adjustment structure in another laser projection device is shown.

[0100] In some embodiments, such as Figure 13 As shown, the base plate 110 includes a self-locking hole 103, the inner wall of which has multiple toothed grooves. A self-locking member 150 is installed in the self-locking hole 103, the outer surface of which has gear teeth for engaging with the toothed grooves on the inner wall of the self-locking hole 103. A threaded hole 101 is formed inside the self-locking member 150.

[0101] In some embodiments, such as Figure 13 As shown, the adapter plate 120 includes a self-locking hole 1203, the inner wall of which has multiple toothed grooves. A self-locking member 150 is installed in the self-locking hole 1203, the outer surface of which has gear teeth for engaging with the toothed grooves on the inner wall of the self-locking hole 1203. A threaded hole 101 is formed inside the self-locking member 150.

[0102] Figure 14 A three-dimensional diagram of an adapter plate in a laser projection device is shown; Figure 15 A schematic diagram of one side of the adapter plate in a laser projection device is shown.

[0103] In some embodiments, such as Figure 14 and Figure 15 As shown, the housing 100 includes a first fixing part 130 and a second fixing part 140; the first fixing part 130 is used to connect the first elastic member 235 to one end away from the first clamping arm 231; the second fixing part 140 is used to connect the second elastic member 236 to one end away from the second clamping arm 232.

[0104] In this embodiment, the adapter plate 120 is fixed to the base plate 110 through the mounting hole 1204. The adapter plate 120 includes a first fixing part 130 and a second fixing part 140; the first fixing part 130 is used to connect the end of the first elastic member 235 away from the first clamping arm 231. Through the first fixing part 130, the first elastic member 235 can be stably installed in the housing 100, ensuring that it always provides a constant force to the first clamping arm 231. The second fixing part 140 is used to connect the end of the second elastic member 236 away from the second clamping arm 232. Similar to the first fixing part 130, it ensures that the second elastic member 236 can also be stably installed and provides the necessary force to the second clamping arm 232.

[0105] In some embodiments, such as Figure 14 and Figure 15As shown, a first mounting groove 131 is formed on the side of the first fixing part 130 facing the second fixing part 140. The first mounting groove 131 extends to the edge of the first fixing part 130 opposite to the pivot shaft 233 and has an inlet. The first elastic member 235 can slide into the first mounting groove 131 through the inlet for easy installation. At the same time, the first mounting groove 131 limits and protects the first elastic member 235. Similarly, a second mounting groove 141 is formed on the side of the second fixing part 140 facing the first fixing part 130. The second mounting groove 141 extends to the edge of the second fixing part 140 opposite to the pivot shaft 233 and has an inlet. The second elastic member 236 can slide into the second mounting groove 141 through the inlet for easy installation. At the same time, the second mounting groove 141 limits and protects the second elastic member 236.

[0106] Figure 16 A three-dimensional view of the first clamping arm in a laser projection device is shown; Figure 17 A three-dimensional view of the second clamping arm in a laser projection device is shown. Figure 1 ; Figure 18 A three-dimensional view of the second clamping arm in a laser projection device is shown. Figure 2 .

[0107] In some embodiments, such as Figure 16 As shown, the first clamping arm 231 has an arc-shaped limiting groove 2312 on the side facing the second clamping arm 232, which is used to match the shape of the connecting rod 210.

[0108] And / or, such as Figure 17 As shown, the second clamping arm 232 has an arc-shaped limiting groove 2322 on the side facing the first clamping arm 231, which is used to match the shape of the connecting rod 210.

[0109] like Figure 16 As shown, the first clamping arm 231 has an arc-shaped limiting groove 2312 on the side facing the second clamping arm 232, and this limiting groove matches the shape of the connecting rod 210. This design not only increases the stability during clamping, but also reduces friction, allowing the connecting rod 210 to move more smoothly within the clamping space 2301.

[0110] Similarly, as Figure 16 As shown, a similar arc-shaped limiting groove 2322 can also be formed on the side of the second clamping arm 232 facing the first clamping arm 231, which further enhances the clamping effect and improves the adjustment accuracy.

[0111] The arc-shaped limiting groove design not only improves clamping reliability and simplifies the operation process but also enhances the user experience. By adding the arc-shaped limiting groove, the contact between the elastic clamping component 230 and the connecting rod 210 is made tighter, avoiding slippage or loosening problems caused by shape mismatch. When the user adjusts the height, the connecting rod 210 can be inserted into the clamping space 2301 more easily, and due to the existence of the limiting groove, the connecting rod 210 will not shift during lifting, thereby improving adjustment efficiency. The overall design takes into account various details in actual use, ensuring that the equipment maintains good performance even after long-term use and reducing maintenance needs.

[0112] In some embodiments, such as Figures 16-18 As shown, the second end of the first clamping arm 231 has a first unlocking part 2313, which protrudes toward the clamping space 2301. The second end of the second clamping arm 232 has a second unlocking part 2323, which also protrudes toward the clamping space 2301. This design results in a smaller gap between the first unlocking part 2313 and the second unlocking part 2323, thereby reducing the overall size of the unlocking rod 241. Consequently, the size of the operating hole 102 is also reduced, thus providing a dustproof function.

[0113] like Figure 18 As shown, the second clamping arm 232 includes an elastic member connecting portion 2324 for connecting with the second elastic member 236.

[0114] In some embodiments, such as Figure 13 As shown, the unlocking lever 241 includes an unlocking end 2411 and an actuating end 2412; the unlocking end 2411 is used to insert between the first clamping arm 231 and the second clamping arm 232; the actuating end 2412 is located outside the housing 100; wherein, the elastic reset member 242 is located outside the housing 100, and one end of the elastic reset member 242 is connected to the actuating end 2412, and the other end is connected to the housing 100.

[0115] The unlocking end 2411 is located between the first clamping arm 231 and the second clamping arm 232, and is used to insert into the clamping space 2301 to expand its size. After being inserted into the clamping space 2301, the unlocking end 2411 temporarily opens the two clamping arms, allowing the connecting rod 210 to move freely along the axial direction without obstruction. The actuating end 2412 is located outside the housing 100 for easy user operation. The user can manually press or pull the actuating end 2412 to insert and remove the unlocking rod 241.

[0116] In some embodiments, the unlocking lever 241 is mounted through the operating hole 102 inside the housing 100. (Refer to...) Figure 13The unlocking rod 241 passes through the operating hole 102 and extends to the outside of the housing 100 on the side opposite to the unlocking end 2411. Finally, it is threadedly connected to the unlocking rod 241 through the plug 243 to fix the elastic reset member 242. The elastic reset member 242 is sleeved on the outside of the unlocking rod 241.

[0117] In some embodiments, the elastic reset member 242 is located outside the housing 100, with one end connected to the actuating end 2412 and the other end connected to the housing 100. The elastic reset member 242, like a spring, always provides a force to the unlocking end 2411 away from the clamping space 2301, ensuring that the unlocking rod 241 can automatically return to its initial position without external intervention, thereby re-closing the clamping space 2301 and fixing the connecting rod 210. Of course, when the unlocking rod 241 is installed in the housing 100 along the direction of gravity, the unlocking rod 241 can also automatically return to its initial position under the combined action of gravity and the elastic force of the elastic reset member 242.

[0118] In some embodiments, the elastic reset member 242 is located inside the housing 100, with one end connected to the unlocking end 2411 and the other end connected to the housing 100 or the adapter plate 120. The elastic reset member 242, like a spring, always provides a force to the unlocking end 2411 away from the clamping space 2301, ensuring that the unlocking rod 241 can automatically return to its initial position without external intervention, thereby re-closing the clamping space 2301 and fixing the connecting rod 210. Of course, when the unlocking rod 241 is installed in the housing 100 along the direction of gravity, the unlocking rod 241 can also automatically return to its initial position under the combined action of gravity and the elastic force of the elastic reset member 242.

[0119] When the user needs to adjust the height of the caster 220, pressing the trigger end 2412 causes the unlocking end 2411 to insert into the clamping space 2301 between the first clamping arm 231 and the second clamping arm 232. At this time, the unlocking end 2411 temporarily opens the two clamping arms, increasing the size of the clamping space 2301 and allowing the connecting rod 210 to rise and fall freely. After the adjustment is completed, releasing the trigger end 2412 causes the elastic reset member 242 to immediately cause the unlocking rod 241 to return to its original position. The unlocking end 2411 exits the clamping space 2301, and the first clamping arm 231 and the second clamping arm 232, under the action of the first elastic member 235 and the second elastic member 236, reclose and clamp the connecting rod 210, locking the new position and preventing any accidental height changes.

[0120] In the laser projection device provided in this embodiment, the casters 220 are easy to adjust, the unlocking component 240 automatically resets, and the overall stability is high. Users can simply press the touch end 2412 to adjust the height without complicated tools or steps. The elastic reset component 242 ensures that the unlocking lever 241 automatically resets after adjustment, simplifying the user's operation and enhancing the system's reliability. Even under slight impact or other external interference, the synergistic effect of the elastic reset component 242 and the elastic clamping component 230 ensures the stability of the casters 220, avoiding image displacement caused by accidental contact.

[0121] In some embodiments, such as Figure 6 and Figure 13 As shown, the radial dimension of the unlocking end 2411 gradually decreases along the direction from the triggering end 2412 to the unlocking end 2411 to form a tapered guide surface 2411a.

[0122] In some embodiments, the unlocking end 2411 employs a tapered guide surface 2411a, a design that further optimizes the operational performance of the unlocking lever 241. The unlocking end 2411, along the direction from the actuating end 2412 to the unlocking end 2411, gradually decreases in radial dimension, forming a tapered guide surface 2411a. This tapered design makes it easier for the unlocking lever 241 to insert into the clamping space 2301 between the first clamping arm 231 and the second clamping arm 232. When the user presses the actuating end 2412, the tapered guide surface 2411a naturally guides the unlocking lever 241 into the clamping space 2301, gradually opening the two clamping arms during insertion without requiring highly precise alignment.

[0123] Due to the presence of the tapered guide surface 2411a, the unlocking lever 241 can still be smoothly inserted into the clamping space 2301 even when it is slightly off-center, making insertion easier and reducing the difficulty of operation.

[0124] The design of the tapered guide surface 2411a can effectively reduce friction and resistance during insertion, making the entire unlocking process smoother and avoiding jamming caused by the clamping space 2301 being too tight.

[0125] When the user releases the trigger 2412, the elastic reset element 242 pushes the unlocking lever 241 to reset. Since the unlocking end 2411 is tapered, it gradually reduces the contact area with the clamping space 2301 during the withdrawal process, allowing the unlocking lever 241 to withdraw more smoothly without getting stuck.

[0126] The tapered guide surface 2411a not only simplifies the user's operating process but also improves the overall reliability and durability of the equipment. It maintains good performance even under frequent use, enhancing the user experience. This design is highly adaptable, has a higher tolerance for manufacturing tolerances, and can maintain consistent operating feel and performance across different batches of products.

[0127] By introducing a tapered guide surface 2411a, the unlocking lever 241 not only improves the convenience and reliability of operation, but also enhances the overall stability of the system.

[0128] Figure 19 A schematic diagram showing the distribution of the caster adjustment structure in a laser projection device is shown. Figure 20 A schematic diagram of the distribution of the caster adjustment structure in a laser projection device is shown.

[0129] In some embodiments, such as Figure 19 As shown, the housing 100 includes a bottom surface 111; the bottom surface 111 has two first side edges 111a arranged along a first direction and two second side edges 111b arranged along a second direction; wherein the second direction is perpendicular to the first direction;

[0130] The laser projection device includes multiple caster adjustment structures 200; the multiple caster adjustment structures 200 are spaced apart on the bottom surface 111 near a first side 111a.

[0131] In one embodiment, such as Figure 19 As shown, the bottom surface 111 of the housing 100 is rectangular, with two opposing first sides 111a and two opposing second sides 111b; the two second sides 111b are respectively connected between the two first sides 111a. Two caster adjustment structures 200 are provided on the bottom surface 111 of the housing 100, both caster adjustment structures 200 being close to the same first side 111a. The projection angle can be adjusted by adjusting the height of one side of the laser projection device. Concentrating the caster adjustment structures 200 on one side optimizes the spatial layout of the bottom of the device and avoids interference with other components. Furthermore, multiple adjustment structures allow the device to maintain balance on different terrains, adapting to various usage scenarios.

[0132] By centrally arranging multiple caster adjustment structures 200 on one side of the bottom surface 111 near a first side 111a, the flexibility and adaptability of the equipment are improved, and the utilization of the space on the bottom surface 111 is optimized. This design is particularly suitable for laser projection equipment that requires frequent adjustments to height and position, ensuring stable operation in various environments.

[0133] In some embodiments, such as Figure 20As shown, the housing 100 includes a bottom surface 111; the bottom surface 111 has a plurality of corner regions 111c;

[0134] The laser projection device 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 111c.

[0135] In one embodiment, such as Figure 20 As shown, the bottom surface 111 of the housing 100 is rectangular, and has four corner areas 111c. Four caster adjustment structures 200 are arranged on the bottom surface 111 of the housing 100, each located near one corner area 111c. Corner areas are typically the least likely to be occupied by other components, allowing for a more efficient arrangement of the caster adjustment structures. The four caster adjustment structures 200 make the adjustment of the projection angle of the laser projection device more flexible.

[0136] Each caster adjustment structure 200 corresponds to a corner zone 111c, meaning each corner zone 111c has one caster adjustment structure 200. This design ensures the device's balance on different terrains. By setting a caster adjustment structure 200 in each corner zone 111c, users can independently adjust the height of each corner as needed to ensure the projected image is level and stable. Multiple independent caster adjustment structures 200 allow the device to maintain balance on uneven ground, adapting to various usage scenarios. The caster adjustment structure 200 in each corner zone 111c ensures a uniform distribution of the device's overall center of gravity, reducing the possibility of tilting or wobbling.

[0137] By aligning the caster adjustment mechanism with the multiple corner areas of the base, the flexibility and adaptability of the equipment are improved, and the utilization of the base space is optimized. This design is particularly suitable for laser projection equipment that requires frequent height and position adjustments, ensuring stable operation in different environments and enabling quick and accurate height fine-tuning.

[0138] 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 a threaded hole formed at its bottom. and Caster adjustment mechanism; The caster adjustment structure includes: A connecting rod is threadedly connected to the threaded hole, and the first end of the connecting rod passes through the threaded hole and extends into the interior of the housing; Casters are connected to the second end of the connecting rod; A resilient clamping assembly is located inside the housing; the resilient clamping assembly includes a clamping space for clamping the connecting rod; and Unlocking component, the unlocking component includes: Unlocking lever, used to insert into the clamping space to expand the size of the clamping space so that the connecting rod can move up and down along its axial direction; and An elastic reset element, connected to the unlocking lever, is used to always provide a force to the unlocking lever away from the clamping space; The housing has an operating hole for exposing the unlocking rod.

2. The laser projection device according to claim 1, characterized in that, The elastic clamping assembly includes: A first clamping arm, wherein a first shaft hole is formed at the first end of the first clamping arm; The second clamping arm has a second shaft hole formed at its first end; A pivot shaft passes through the first shaft hole and the second shaft hole in sequence and pivotally connects the first clamping arm and the second clamping arm, so that the first clamping arm and the second clamping arm form the clamping space; A first elastic element, connected to the second end of the first clamping arm, is used to consistently provide a force close to the second end of the first clamping arm; and The second elastic element is connected to the second end of the second clamping arm and is used to always provide a force close to the second end of the first clamping arm to the second end of the second clamping arm.

3. The laser projection device according to claim 2, characterized in that, The housing includes: A first fixing part is used to connect the end of the first elastic member opposite to the first clamping arm; and The second fixing part is used to connect the second elastic member to the end opposite to the second clamping arm.

4. The laser projection device according to claim 3, characterized in that, The first clamping arm has an arc-shaped limiting groove on the side facing the second clamping arm, which is used to match the shape of the connecting rod. And / or, the second clamping arm has an arc-shaped limiting groove on the side facing the first clamping arm, for matching the shape of the connecting rod.

5. The laser projection device according to claim 2, characterized in that, The unlocking lever includes: The unlocking end is used to insert between the first clamping arm and the second clamping arm; and The actuating end is located outside the housing; The elastic reset member is located outside the housing, with one end connected to the actuating end and the other end connected to the housing.

6. The laser projection device according to claim 5, characterized in that, The unlocking end has a gradually decreasing radial dimension along the direction from the trigger end to the unlocking end to form a tapered guide surface.

7. The laser projection device according to any one of claims 1-6, characterized in that, The housing includes: A base plate having the threaded hole formed thereon; The elastic clamping assembly is fixed to the surface of the base plate facing the inside of the housing.

8. The laser projection device according to any one of claims 1-6, characterized in that, The housing includes: A base plate, wherein the threaded hole is formed on the base plate; The caster adjustment mechanism also includes: An adapter plate is mounted on the surface of the base plate facing the interior of the housing. A first clearance hole is formed on the adapter plate to allow the connecting rod to pass. The first clearance hole is coaxially connected to the threaded hole. The adapter plate has a second clearance hole for avoiding the unlocking rod; the second clearance hole is coaxially connected to the operating hole. The elastic clamping assembly is fixed to the surface of the adapter plate opposite to the base plate.

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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