CN218350689U - Laser projection device - Google Patents

Abstract

The application discloses laser projection equipment belongs to the projection display field. The laser projection apparatus includes: the locking device comprises a shell, a plurality of casters, a clamping fixture, a locking block and a handle piece. After the height of the laser projection equipment is adjusted, the locking block is driven to rotate through the handle piece, and then acting force is applied to the connecting rod through one end of the clamping fixture connected with the locking block, and the connecting rod is clamped after the clamping fixture is contacted with the connecting rod. Like this, integrated chucking anchor clamps and the latch segment that hold the intracavity can not receive the mistake and touch and take place the bad phenomenon of removal. In addition, through the cooperation chucking effect of latch segment and chucking anchor clamps, even the truckle body is touched by mistake, the truckle body takes place pivoted probability also lower. Therefore, the height distance between the caster body for supporting the shell in the laser projection equipment and the shell cannot be changed, namely the laser projection equipment cannot incline on the whole.

Description

Laser projection device

Technical Field

The application relates to the field of projection display, in particular to laser projection equipment.

Background

With the continuous development of science and technology, laser projection systems are increasingly applied to the work and life of people. The laser projection system mainly comprises: laser projection equipment, projection screen and TV bench. The laser projection equipment emits light beams to the projection screen, and the projection screen receives the light beams to realize the display of pictures.

Currently, laser projection devices typically include: the device comprises a shell and a plurality of casters connected with the shell. The casing can be supported on the television cabinet through the casters, and the distance between the casing and the television cabinet can be adjusted by rotating the casters so as to adjust the position of the picture projected on the projection screen. In order to lock the rotation of the caster, a lock nut connected to the caster is generally provided outside the housing.

However, when the laser projection apparatus is used, the locking nut is easily touched, so that the caster is easily rotated after the locking nut fails to lock the caster, and the display effect of the image projected on the projection screen is poor.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides laser projection equipment. The problem that the caster of the laser projection equipment in the prior art is touched by mistake and easily rotates can be solved, the technical scheme is as follows:

in one aspect, a laser projection apparatus is provided, the laser projection apparatus including:

a housing having a receiving cavity;

a plurality of casters, the casters comprising: the connecting rod is movably connected with the shell, one part of the connecting rod is positioned in the accommodating cavity, the other part of the connecting rod is positioned outside the accommodating cavity, and the part of the connecting rod, which is positioned outside the accommodating cavity, is fixedly connected with the caster body;

the clamping fixture is positioned in the accommodating cavity, one end of the clamping fixture is provided with a clamping space, and the part of the connecting rod is positioned in the clamping space;

the locking block is connected with the other end of the clamping clamp, and the handle piece is positioned outside the accommodating cavity and fixedly connected with the locking block;

wherein the handle piece is configured to: the locking block is driven to rotate, so that one end of the clamping fixture applies acting force to the connecting rod, or one end of the clamping fixture stops applying acting force to the connecting rod.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

a laser projection device may include: the locking device comprises a shell, a plurality of casters, a clamping fixture, a locking block and a handle piece. Through set up chucking anchor clamps in holding the intracavity in the casing to and the latch segment of being connected with chucking anchor clamps, and hold the chamber outside and set up the handle spare with latch segment fixed connection. After the height adjustment of the laser projection equipment is finished, the handle piece can conveniently drive the locking block to rotate, so that one end of the clamping fixture connected with the locking block applies acting force to the connecting rod, and the connecting rod is clamped after being contacted with the connecting rod. Therefore, when the laser projection equipment is used, the clamping clamp and the locking block which are integrated in the accommodating cavity cannot be touched by mistake to cause the bad phenomenon of movement. In addition, through the cooperation chucking effect of latch segment and chucking anchor clamps, even the truckle body is touched by mistake, the truckle body takes place pivoted probability also lower. So for the high distance between truckle body and the casing that is arranged in supporting the casing among the laser projection equipment can not change, namely make laser projection equipment can not produce the bad phenomenon of slope on the whole, and then make the display effect of the picture of laser projection equipment projection on the laser projection screen better.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic partial structural diagram of a laser projection apparatus provided in an embodiment of the present application;

FIG. 2 is a schematic view of the clamping fixture, locking segment and handle member of FIG. 1 showing the effect of unclamping the caster;

FIG. 3 is a schematic view of the clamping fixture, locking segment and handle member of FIG. 1 showing the clamping effect on the caster;

FIG. 4 is a schematic view of a caster wheel coupled to a housing according to an embodiment of the present disclosure;

FIG. 5 is a schematic partial structural diagram of another laser projection apparatus provided in an embodiment of the present application;

FIG. 6 is a schematic view of a clamp provided in an embodiment of the present application;

FIG. 7 is a schematic view of a retainer coupled to a friction pad according to an embodiment of the present disclosure;

FIG. 8 is a schematic view illustrating the effect of the connection of the elastic member and the retainer according to the embodiment of the present application;

FIG. 9 is a schematic partial structural diagram of another laser projection apparatus provided in an embodiment of the present application;

FIG. 10 is a schematic view of a handle member according to an embodiment of the present application;

FIG. 11 is a schematic partial structural diagram of another laser projection apparatus provided in an embodiment of the present application;

FIG. 12 is an exploded view of a clamp and spindle provided in accordance with an embodiment of the present application;

FIG. 13 is a schematic view of the retainer shown in FIG. 12 mounted to a spindle;

fig. 14 is a schematic structural diagram of a laser projection system according to an embodiment of the present application.

Specific embodiments of the present application have been shown by way of example in the drawings and will be described in more detail below. The drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the concepts of the application by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

In the related art, after the caster is locked by the lock nut provided outside the housing, the appearance of the laser projection apparatus is required. The bottom of casing is provided with the depressed part, and the truckle can be located this depressed part, plays certain effect of sheltering from to the truckle through the depressed part. However, when the caster is readjusted, the user's operation space at the recess is small, resulting in inconvenience in the operation of the caster.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic partial structural view of a laser projection apparatus according to an embodiment of the present disclosure, fig. 2 is a schematic view of an effect of the clamping clamp, the locking block, and the handle member in fig. 1 on unclamping the caster, and fig. 3 is a schematic view of an effect of the clamping clamp, the locking block, and the handle member in fig. 1 on clamping the caster. The laser projection apparatus 000 may include: the caster device includes a housing 100, a plurality of casters 200, a chucking jig 300, a locking block 400, and a handle member 500.

The housing 100 in the laser projection apparatus 000 may have a receiving chamber 101.

The caster 200 in the laser projection apparatus 000 may include: the connecting rod 202 can be movably connected with the shell 100, one part of the connecting rod 202 can be positioned in the accommodating cavity 101 in the shell 100, and the other part of the connecting rod 202 can be positioned outside the accommodating cavity 101 in the shell 100. The portion of the connection rod 202 outside the receiving cavity 101 in the housing 100 may be fixedly connected to the caster body 201. In the present application, the connecting rod 202 of the caster 200 may be screwed with the housing 100 to achieve the movable connection of the connecting rod 202 with the housing 100. As an example, the laser projection apparatus 000 generally has four corners, the number of the casters 200 in the laser projection apparatus 000 may be two, and the corresponding number of the clamping clamps 300, the number of the locking blocks 400, and the number of the handle members 500 may be two. In other possible implementations, the number of the casters 200 in the laser projection apparatus 000 may be four, four casters 200 may be respectively located at four corners of the laser projection apparatus 000, and the number of the corresponding clamping clamps 300, the number of the locking blocks 400, and the number of the handle members 500 may be four.

The chucking jig 300 in the laser projection apparatus 000 may be located in the receiving chamber 101 in the housing 100. One end of the clamping jig 300 may have a clamping space, and a portion of the connection rod 202 may be located in the clamping space.

The locking block 400 in the laser projection apparatus may be connected to the other end of the clamping jig 300.

The handle member 500 of the laser projection apparatus 000 may be located outside the receiving cavity 101 of the housing 100 and may be fixedly connected to the locking block 400. Wherein the grip piece 500 may be configured to: the locking block 400 is rotated to allow one end of the clamping fixture 300 to apply a force to the connecting rod 202, or to allow one end of the clamping fixture 300 to stop applying a force to the connecting rod 202.

For example, as shown in fig. 2 and 3, when commissioning the laser projection apparatus 000, first, the user may appropriately lift the housing 100 in the laser projection apparatus 000. Then, the user can hold the handle member 500, and the handle member 500 drives the locking block 400 to rotate in the first direction by a certain angle, so that the one end of the clamping fixture 300 stops applying the acting force to the connecting rod 202. Thereafter, the user applies a force to the connecting rod 202 in the caster 200, causing the connecting rod 202 to move relative to the housing 100. Namely, the ratio of the portion of the connecting rod 202 in the caster 200 located inside the accommodating chamber 101 in the housing 100 to the portion located outside the accommodating chamber 101. Thereafter, the user drives the locking block 400 to rotate in the second direction by a certain angle through the handle member 500 again, so that one end of the clamping fixture 300 applies a force to the connection rod 202. At this time, the clamping jig 300 may abut against the side surface of the connection rod 202, and clamp a portion of the connection rod 202 in the clamping space at one end of the clamping jig 300, so as to clamp the connection rod 202 in the caster 200. Finally, the laser projection device 000 is placed on a television cabinet in the laser projection system, so that the plurality of casters 200 are in contact with the cabinet surface of the television cabinet, and then the adjustment of the distance between the laser projection device 000 and the television cabinet (specifically, the height adjustment between the housing in the laser projection device and the caster body) can be completed. The first direction and the second direction are two opposite directions. For example, the first direction may be a clockwise direction and the second direction may be a counterclockwise direction.

In the embodiment of the present application, the clamping fixture 300 and the locking block 400 connected to the clamping fixture 300 are disposed in the accommodating cavity 101 in the housing 100, and the handle member 500 fixedly connected to the locking block 400 is disposed outside the accommodating cavity 101. After the height adjustment of the laser projection apparatus 000 is completed, the handle member 500 can conveniently drive the locking block 400 to rotate, so that an acting force is applied to the connecting rod 202 through one end of the clamping clamp 300 connected with the locking block 400, and the connecting rod 202 is clamped after being contacted with the connecting rod 202. Thus, the clamping fixture 300 and the locking block 400 integrated in the accommodating cavity 101 will not be touched by mistake and moved during the use of the laser projection device 000. In addition, through the cooperation and clamping action of the locking block 400 and the clamping fixture 300, even if the caster body 201 is touched by mistake, the probability of the rotation of the caster body 201 is low. Thus, the height distance between the caster body 201 for supporting the housing 100 of the laser projection device 000 and the housing 100 is not changed, that is, the laser projection device 000 does not incline as a whole, and the display effect of the picture projected on the laser projection screen by the laser projection device 000 is better.

In summary, the embodiment of the present application provides a laser projection apparatus, which may include: the locking device comprises a shell, a plurality of casters, a clamping fixture, a locking block and a handle piece. Through set up chucking anchor clamps in holding the intracavity in the casing to and the latch segment of being connected with chucking anchor clamps, and set up the handle spare with latch segment fixed connection outside holding the chamber. After the height adjustment of the laser projection equipment is finished, the handle piece can conveniently drive the locking block to rotate, so that one end of the clamping fixture connected with the locking block applies acting force to the connecting rod, and the connecting rod is clamped after being contacted with the connecting rod. Therefore, the clamping clamp and the locking block which are integrated in the accommodating cavity can not be touched by mistake to cause the bad phenomenon of movement in the using process of the laser projection equipment. In addition, through the cooperation chucking effect of latch segment and chucking anchor clamps, even the truckle body is touched by mistake, the truckle body takes place pivoted probability also lower. So for the high distance between truckle body and the casing that is arranged in supporting the casing among the laser projection equipment can not change, namely make laser projection equipment can not produce the bad phenomenon of slope on the whole, and then make the display effect of the picture of laser projection equipment projection on the laser projection screen better.

Alternatively, the connecting rod 202 of the caster 200 may have an external thread, and the housing 100 may have a first threaded hole (not shown) communicating with the receiving cavity 101 and cooperating with the external thread on the connecting rod 202, and the connecting rod 202 may be threadedly coupled with the housing 100. In this case, the connecting rod 202 of the caster 200 can be stably connected to the housing 100 by screwing, so that the caster 200 does not fall off the housing 100 when the connecting rod 202 of the caster 200 is rotated to adjust the distance between the caster body 201 and the bottom surface of the housing 100. For example, please refer to fig. 4, fig. 4 is a schematic view illustrating a connection between a caster and a housing according to an embodiment of the present application. In practical applications, a threaded hole matching with the external thread of the connecting rod 202 may be directly formed on the housing 100. Alternatively, the embedded nut a may be disposed in the casing 100, and the threaded connection between the casing 100 and the connecting rod 202 is realized through the embedded nut a, which is not specifically limited in the embodiment of the present application.

In the embodiment of the present application, please refer to fig. 5, and fig. 5 is a schematic partial structural diagram of another laser projection apparatus provided in the embodiment of the present application. The chucking jig 300 in the laser projection apparatus 000 may include: two clasp members 301, each clasp member 301 may have a first end 301a and a second end 301b disposed opposite. A clamping space may be formed between the first ends of the two clamping members 301, and the locking block 400 in the laser projection apparatus 000 may be located between the second ends 301b of the two clamping members 301. A portion of the two fastening members 301 between the first end portion 301a and the second end portion 301b may be movably connected, that is, a portion of one fastening member 301 between the first end portion 301a and the second end portion 301b of this fastening member 301 may be movably connected to a portion of the other fastening member 301 between the first end portion 301a and the second end portion 301b of this fastening member 301. Wherein the grip piece 500 may be configured to: the locking block 400 is rotated such that the locking block 400 exerts opposite forces on the second end portions 301b of the two retainers 301, or such that the locking block 400 stops exerting opposite forces on the second end portions 301b of the two retainers 301, respectively.

As an example, when commissioning the laser projection apparatus 000, first, the user may appropriately lift the housing 100 in the laser projection apparatus 000. Then, the user can hold the handle member 500 by hand, and the handle member 500 drives the locking block 400 to rotate in the first direction by a certain angle, so as to release the opposite force applied by the locking block 400 to the second ends 301b of the two clamping members 301. Thereafter, a force is applied to the connecting rod 202 in the caster 200, so that the connecting rod 202 moves relative to the housing 100. Namely, the ratio of the portion of the connecting rod 202 in the caster 200 located inside the accommodating chamber 101 in the housing 100 to the portion located outside the accommodating chamber 101. Thereafter, the user rotates the locking block 400 in the second direction by a certain angle again by the handle member 500, so that the two ends of the locking block 400 respectively apply opposite forces to the second ends 301b of the two retainers 301. At this time, the portions of the two retainers 301 located between the first end 301a and the second end 301b are movably coupled. Therefore, the second end portions 301b of the two retainers 301 are rotated in opposite directions, and the first end portions 301a of the two retainers 301 are rotated in directions close to the connecting rod 202 and abut against the side surfaces of the connecting rod 202 to effect the clamping of the connecting rod 202 in the caster 200. The first direction and the second direction are two opposite directions. For example, the first direction may be a clockwise direction and the second direction may be a counterclockwise direction.

In this way, two clamping pieces 301 and a locking block 400 located between the two clamping pieces 301 are arranged in the accommodating cavity 101 in the housing 100, and a handle piece 500 fixedly connected with the locking block 400 is arranged outside the accommodating cavity 101. After the height of the laser projection device 000 is adjusted, the handle member 500 drives the locking block 400 to rotate, so that the locking block 400 pushes the second ends 301b of the two clamping members 301 to rotate in opposite directions, and the first ends 301a of the two clamping members 301 rotate in a direction close to the connecting rod 202 and clamp the connecting rod 202 after contacting the connecting rod 202. In this way, the two clamping pieces 301 and the locking block 400 integrated in the accommodating cavity 101 are not accidentally touched to move during the use of the laser projection device 000. In addition, through the cooperation chucking action of the locking block 400 and the two chucking members 301, even if the caster body 201 is touched by mistake, the caster body 201 has a low probability of rotating. Thus, the height distance between the caster body 201 for supporting the housing 100 of the laser projection device 000 and the housing 100 is not changed, that is, the laser projection device 000 does not incline as a whole, and the display effect of the picture projected on the laser projection screen by the laser projection device 000 is better.

Optionally, please refer to fig. 6, where fig. 6 is a schematic structural diagram of a clamping member according to an embodiment of the present application. The first end portion 301a of each of the two chucking members 301 may have a stopper groove 301c on a side close to the connecting rod 202. When the locking blocks 400 respectively apply opposite forces to the second end portions 301b of the two clamping members 301, the groove surfaces of the limiting grooves 301c provided on the first end portions 301a of the two clamping members 301 can be abutted against the side surfaces of the connecting rod 202 in the caster 200. In this case, by providing the stopper groove 301c on the side of the first end 301a of each clip 301 close to the connecting rod 202, when the handle member 500 is used to rotate the locking block 400, the locking block 400 pushes the second ends 301b of the two clips 301 to rotate in opposite directions, so that the first ends 301a of the two clips 301 rotate in the direction close to the connecting rod 202, and the groove surfaces of the two stopper grooves 301c are both abutted against the side surfaces of the connecting rod 202. In this way, the jamming action of the first ends 301a of the two jamming members 301 on the connecting rod 202 in the caster 200 is further effectively ensured. It should be noted that the clamping action of the first end 301a of the clamping member 301 on the connecting rod 202 is achieved by the friction force applied by the first end 301a of the clamping member 301 to the side of the connecting rod 202.

In this application, please refer to fig. 6 and 7, fig. 7 is a schematic view illustrating a connection between a clamping member and a friction increasing pad according to an embodiment of the present application. The chucking jig 300 may further include: the friction increasing pad 302 fixed to the groove surface of the stopper groove 301c at the first end 301a of the retainer 301 may abut against the side surface of the connection rod 202 in the caster 200 when the two retainers 301 apply opposite forces to the second ends 301b of the two retainers 301, respectively, by the locking blocks 400. Thus, the friction force between the first end 301a of the clamping member 301 and the side surface of the connecting rod 202 can be further increased through the friction increasing pad 302, and the clamping action of the two clamping members 301 on the connecting rod 202 is further effectively ensured. For example, the number of the friction increasing pads 302 may be two, and the two friction increasing pads 302 are respectively fixedly connected with the groove surfaces of the limiting grooves 301c of the two clamping members 301. The friction increasing pad 302 may be made of a material having a relatively high coefficient of friction. For example, the friction pad 302 may be a structure made of a rubber material, which is not particularly limited in the embodiments of the present application.

In the embodiment of the present application, as shown in fig. 6, the groove surface of the stopper groove 301c provided on the first end portion 301a of each retainer 301 may include: the first side plane c1 and the second side plane c2, and the first side plane c1 and the second side plane c2 may intersect. Wherein, when the locking blocks 400 respectively apply opposite forces to the second ends 301b of the two retainers 301, the first side plane c1 and the second side plane c2 can both abut against the side of the connecting rod 202 in the caster 200. In this case, the chucking of the connection rod 202 is achieved by employing the abutment of the first side plane c1 and the second side plane c2 with the side surfaces of the connection rod 200. Since the contact area is small when the side plane is in contact with the side of the connecting rod 202. Therefore, the pressure exerted by the side planes on the connecting rod 202 is large, and the limiting effect of the first side plane c1 and the second side plane c2 on the connecting rod 202 is ensured. For example, the first side plane c1 and the second side plane c2 may have an included angle therebetween, and the included angle may be set according to the direction of the connecting rod 202. In other possible implementation manners, the groove surface of the limiting groove 301c may also be an arc surface, and at least a part of the arc surface may abut against the side surface of the connecting rod 202, so that the connecting rod 202 can be clamped.

Optionally, please refer to fig. 5 and 8, fig. 8 is a schematic view illustrating an effect of the connection between the elastic element and the retainer provided in the embodiment of the present application. The chucking jig 300 in the laser projection apparatus 000 may further include: an elastic member 303 is disposed between the first end portions 301a of the two fastening members 301, and both ends of the elastic member 303 can be fixedly connected to the first end portions 301a of the two fastening members 301. In this case, when the height of the laser projection apparatus 000 needs to be adjusted, the user rotates the locking block 400 by the handle member 500 to release the opposite force applied by the locking block 400 to the second end 301b of the clamping member 301. Since both ends of the elastic member 303 are fixedly connected to the first end portions 301a of the two fastening members 301, respectively. Therefore, the elastic elements 303 can apply opposite forces to the first end portions 301a of the two clamping members 301, respectively, so that the first end portions 301a of the two clamping members 301 rotate in opposite directions. Like this for first end 301a of two chucking spare 301 all separates with the side of connecting rod 202 completely, and then makes the user can be more convenient adjust the distance between truckle body 201 and the casing 100 through rotating truckle 200, with the realization to the regulation of laser projection equipment 000's height, and increased user's use experience and feel.

It should be noted that when the locking blocks 400 respectively apply opposite forces to the second ends 301b of the two clamping members 301, the elastic elements 303 can be compressed when the first ends of the two clamping members 301 are rotated in a direction approaching the connecting rod 202. For example, the elastic element 303 may be a spring, or other component with certain elasticity, which is not specifically limited in this application.

In the embodiment of the present application, please refer to fig. 9 and fig. 10, where fig. 9 is a partial schematic structural diagram of another laser projection apparatus provided in the embodiment of the present application, and fig. 10 is a schematic structural diagram of a handle component provided in the embodiment of the present application. A side of the case 100 adjacent to the caster body 201 may have an arc chute 102 communicating with the receiving cavity 101 in the case 100. The side of the handle member 500 of the laser projection device 000 adjacent to the housing 100 may have a guide protrusion 501, and at least a portion of the guide protrusion 501 may be located in the arc chute 102. In this case, by providing the arc-shaped slide groove 102 in the housing 100, the guide projection 501 provided on the handle member 500 is located inside the arc-shaped slide groove 102. In this way, when the user rotates the locking block 400 through the handle 500, the guide protrusion 501 can slide in the arc-shaped sliding groove 102. That is, the arc-shaped sliding groove 102 can play a certain guiding and limiting role in the sliding of the guiding protrusion 501, so that the user has better controllability on the handle member 500, and the rotation of the locking block 400 is driven by the rotation of the handle member 500.

In this application, please refer to fig. 9, fig. 10, and fig. 11, where fig. 11 is a schematic partial structure diagram of another laser projection apparatus provided in an embodiment of the present application. In order to ensure that the handle member 500 does not fall off the housing 100 during the rotation of the locking block 400, a fixing member B may be disposed in the accommodating cavity 101 of the housing 100, the fixing member B may be fixedly connected to an end of the guide protrusion 501 away from the handle member 500, and a side of the fixing member B close to the guide protrusion 501 may contact with an inner wall of the accommodating cavity 101. For example, the fixing element B may be a stud, and the guide protrusion 501 may be provided with a second threaded hole (not shown in the figure), and the stud and the second threaded hole cooperate to achieve a fixed connection between the stud and the guide protrusion 501.

Alternatively, as shown in fig. 9 and 10, a side of the handle member 500 close to the housing 100 may further have a connecting protrusion 502, and the locking block 400 located in the accommodating cavity 101 in the housing 100 may have a connecting hole 401, and the connecting protrusion 502 may be fixed in the connecting hole 401 (i.e., the connecting protrusion and the connecting hole may be fixedly connected by interference fit), so as to achieve the fixed connection between the handle member 500 and the locking block 400. It should be noted that, the handle member 500 and the locking block 400 may also be fixedly connected by other manners, which is not specifically limited in the embodiments of the present application.

In the embodiment of the present application, as shown in fig. 9, the arc chute 102 in the housing 100 may include: a limiting clamping groove 102a and a chute body 102b communicated with the limiting clamping groove 102 a. Wherein, when the locking blocks 400 in the laser projection device 000 respectively apply opposite forces to the second ends 301b of the two clamping pieces 301, the guide protrusions 501 in the handle member 500 can be clamped with the position-limiting clamping grooves 102 a. In this case, while the guide protrusion 501 is slid in the sliding chute body 102b by the handle member 500, the handle member 500 can rotate the locking block 400, so that the locking block 400 applies opposite forces to the second ends 301b of the two retainers 301, respectively, and the first ends 301a of the two retainers 301 can clamp the connecting rod 202. At this time, the guide projection 501 can be engaged with the stopper groove 102a, so that the guide projection 501 can be positioned in the stopper groove 102 a. Thus, when the handle piece 500 is touched by mistake, the guide protrusion 501 on the handle piece 500 is not easy to be separated from the limit slot 102a, and the locking block 400 fixedly connected with the handle piece 500 is ensured to be in good contact with the second ends 301b of the two clamping pieces 301. For example, when the height of the laser projection apparatus 000 needs to be adjusted, the user may apply a certain force to the guide protrusion 501, so that the guide protrusion 501 is separated from the position-limiting slot 102a, and the guide protrusion 501 can slide in the sliding groove body 102b. While the guide projection 501 slides in the chute body 102b, the handle member 500 can drive the locking block 400 to rotate, so as to release the locking block 400 from applying an opposite force to the second ends 301b of the two retainers 301. So that the first end portions 301a of the two jamming members 301 no longer jam the connecting rod 202.

In the embodiment of the present application, as shown in fig. 9 and 11, a hollow-out groove 103 is further formed in a surface of the housing 100 close to the caster body 201, the hollow-out groove 103 is adjacent to the arc-shaped sliding groove 102, and the hollow-out groove 103 is closer to the locking block 400 than to the arc-shaped sliding groove 102. Under the condition, the hollow-out groove 103 is arranged at the position, adjacent to the arc-shaped sliding groove 102, in the shell 100, the strength of the hollow-out groove 103 in the shell 100 can be effectively reduced through the hollow-out groove 103, and therefore the guide protrusion 501 can be conveniently clamped with the limiting clamping groove 102 a. Or, after the guide projection 501 is clamped with the limit slot 102a, when a user applies a certain acting force to the guide projection 501, the guide projection 501 can conveniently release the clamping action with the limit slot 102 a. In this application, the hollow groove 103 is closer to the locking block 400 than the arc-shaped sliding groove 102, and the hollow groove 103 may be disposed at a position closer to the limiting clamping groove 102 a.

Alternatively, as shown in fig. 10, a side of the handle member 500 of the laser projection apparatus 000 near the housing 100 may have an auxiliary support member 503, and a side of the auxiliary support member 503 facing away from the handle member 500 may be in contact with the housing 100. In this case, the auxiliary supporting member 503 is provided on the side of the handle member 500 close to the housing 100. So, handle piece 500 is at the pivoted in-process, only has auxiliary support piece 503 and casing 100 contact in the handle piece 500, has reduced the friction area between handle piece 500 and casing 100 effectively, has guaranteed that handle piece 500 can more smooth rotation, and then has improved user's use and experienced the sense. It should be noted that in other possible implementations, the side of the handle member 500 close to the housing 100 may be directly contacted with the housing 100. Alternatively, a certain gap may exist between the side of the handle member 500 close to the housing 100 and the housing 100, which is not specifically limited in the embodiments of the present application.

In the embodiment of the present application, please refer to fig. 12 and 13, fig. 12 is an exploded schematic view of a retainer and a rotating shaft provided in the embodiment of the present application, and fig. 13 is an installation schematic view of the retainer and the rotating shaft shown in fig. 12. A portion of each gripping member 301 between the first end 301a and the second end 301b of the gripping member 301 may have an adaptor member 301d, and the adaptor member 301d may have a coupling hole d1. The chucking jig 300 in the laser projection apparatus 000 may further include: the rotating shaft 304, the rotating shaft 304 can sequentially pass through the connecting holes d1 on the two adapters 301d to connect with the two adapters 301d respectively. In this case, by providing the adaptor 301d between the first end 301a and the second end 301b of each clamping member 301, the rotation shaft 304 is used to sequentially pass through the connection holes d1 on the two adaptor 301d to achieve connection with the two adaptor 301 d. In this way, the two clamping members 301 can be movably connected by the cooperation of the two transfer members 301d and the rotating shaft 304. Illustratively, when the second ends 301b of the two gripping members 301 are moved towards each other, the first ends 301a of the two gripping members 301 are able to move towards each other; alternatively, when the second ends 301b of the two clasps 301 are moved relatively, the first ends 301a of the two clasps 301 can be moved relatively. In the present application, after one end of the rotating shaft 304 sequentially passes through the connecting holes d1 on the two adapters 301d to connect with the adapters 301d, in order to prevent the undesirable phenomenon that the rotating shaft 304 falls off from the adapters 301d, a threaded hole (not shown in the figure) may be formed at one end of the rotating shaft 304. And is cooperatively coupled to the threaded bore by an externally threaded stud (not shown) to retain one end of the shaft 304 by the stud.

Alternatively, as shown in fig. 12, the clamping fixture 300 in the laser projection apparatus 000 may further include: a lubricating pad 305 located between the two adapters 301d, wherein two end faces of the lubricating pad 305, which are arranged opposite to each other, can be in contact with the two adapters 301d, respectively. Under this condition, through set up the lubrication pad 305 between two adaptor 301d, this lubrication pad 305 can avoid the direct contact between two adaptor 301d, and then can make between two adaptor 301d can be comparatively smooth relative rotation, has promoted user's use and has experienced the sense. For example, the lubricating pad 305 may be a sheet structure made of Polyoxymethylene (POM), or made of other materials with friction reducing performance, which is not limited in this embodiment.

In the present embodiment, as shown in fig. 12, a first lubrication pad 306 may be disposed between one adapter 301d of the two adapters 301d, which is closer to the inner wall of the accommodating chamber 101 in the housing 100, and the inner wall of the accommodating chamber 101. The first lubricating pad 306 can be fixedly connected to a side of the adapter 301d which is close to the inner wall of the receiving chamber 101. In this way, during the relative rotation of the two adapters 301d, the one adapter 301d is in contact with the inner wall of the accommodating cavity 101 through the first lubrication pad 306, that is, the adapter 301d is prevented from being in direct contact with the inner wall of the accommodating cavity 101, and the frictional resistance between the adapter 301d and the inner wall of the accommodating cavity 101 is effectively reduced.

In summary, an embodiment of the present application provides a laser projection apparatus, which may include: the locking device comprises a shell, a plurality of casters, a clamping fixture, a locking block and a handle piece. Through set up chucking anchor clamps in holding the intracavity in the casing to and the latch segment of being connected with chucking anchor clamps, and hold the chamber outside and set up the handle spare with latch segment fixed connection. After the height adjustment of the laser projection equipment is finished, the handle piece can conveniently drive the locking block to rotate, so that one end of the clamping fixture connected with the locking block applies acting force to the connecting rod, and the connecting rod is clamped after being contacted with the connecting rod. Therefore, when the laser projection equipment is used, the clamping clamp and the locking block which are integrated in the accommodating cavity cannot be touched by mistake to cause the bad phenomenon of movement. In addition, through the cooperation chucking effect of latch segment and chucking anchor clamps, even the truckle body is touched by mistake, the truckle body takes place pivoted probability also lower. So for the high distance between truckle body and the casing that is arranged in supporting the casing among the laser projection equipment can not change, namely make laser projection equipment can not produce the bad phenomenon of slope on the whole, and then make the display effect of the picture of laser projection equipment projection on the laser projection screen better.

The embodiment of the application also provides a laser projection system, and the laser projection system can be an ultra-short-focus laser projection system. For example, please refer to fig. 14, fig. 14 is a schematic structural diagram of a laser projection system according to an embodiment of the present disclosure. The laser projection system may include: a projection screen 001 and a laser projection device 000. The laser projection apparatus 000 may be the laser projection apparatus shown in any of the above embodiments.

In this way, when the laser projection apparatus 000 is in operation, the laser projection apparatus 000 may not only emit light obliquely upward, so that the laser projection apparatus 000 may project a picture onto the projection screen 001. In the present application, the clamping fixture 300, the locking block 400 and the handle 500 are integrated in the laser projection apparatus 000, and the locking of the caster 200 in the laser projection apparatus 000 is realized by the cooperation of the clamping fixture 300, the locking block 400 and the handle 500. In this way, when the laser projection apparatus 000 is in use, the locking action of each clamping fixture 300 on the corresponding caster 200 reduces the probability of the undesirable phenomenon that each caster 200 rotates after being touched by mistake. And then each caster 200 is guaranteed to effectively support the laser projection device 000, so that the laser projection device 000 is not inclined integrally, and the display effect of the picture projected on the projection screen 001 by the laser projection device 000 is guaranteed to be good.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended only to illustrate the alternative embodiments of the present application, and should not be construed as limiting the present application, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A laser projection device, comprising:

a housing having a receiving cavity;

a plurality of casters, the casters comprising: the connecting rod is movably connected with the shell, one part of the connecting rod is positioned in the accommodating cavity, the other part of the connecting rod is positioned outside the accommodating cavity, and the part of the connecting rod, which is positioned outside the accommodating cavity, is fixedly connected with the caster body;

the clamping fixture is positioned in the accommodating cavity, one end of the clamping fixture is provided with a clamping space, and the part of the connecting rod is positioned in the clamping space;

the locking block is connected with the other end of the clamping clamp, and the handle piece is positioned outside the accommodating cavity and fixedly connected with the locking block;

wherein the handle piece is configured to: the locking block is driven to rotate, so that one end of the clamping fixture applies acting force to the connecting rod, or one end of the clamping fixture stops applying acting force to the connecting rod.

2. The laser projection device of claim 1, wherein the clamping fixture comprises: the clamping device comprises two clamping pieces, a clamping piece and a clamping piece, wherein each clamping piece is provided with a first end and a second end which are arranged oppositely, the first ends of the two clamping pieces form a clamping space, the locking block is positioned between the second ends of the two clamping pieces, and the parts of the two clamping pieces between the first ends and the second ends are movably connected;

wherein the handle piece is configured to: the locking block is driven to rotate, so that the locking block applies opposite acting forces to the second end parts of the two clamping pieces respectively, or the locking block stops applying opposite acting forces to the second end parts of the two clamping pieces.

3. The laser projection device of claim 2, wherein a side of the first end of each of the clamping members adjacent to the connecting rod has a limit groove;

when the locking block applies opposite acting forces to the second end parts of the two clamping pieces respectively, the groove surfaces of the limiting grooves arranged on the first end parts of the two clamping pieces are abutted to the side surfaces of the connecting rod.

4. The laser projection device of claim 3, wherein the groove surface in the limiting groove comprises: a first side plane and a second side plane, the first side plane intersecting the second side plane.

5. The laser projection device of claim 2, wherein the clamping fixture further comprises: and the two ends of the elastic element are fixedly connected with the first end parts of the two clamping pieces respectively.

6. The laser projection device according to any one of claims 2 to 5, wherein a face of the housing adjacent to the caster body has an arc-shaped sliding groove communicating with the accommodating chamber, and a side of the handle member adjacent to the housing has a guide projection, at least a part of the guide projection being located in the arc-shaped sliding groove.

7. The laser projection device of claim 6, wherein the arcuate chute comprises: the limiting clamping groove and the sliding groove body are communicated with the limiting clamping groove;

when the locking blocks apply opposite acting forces to the second end parts of the two clamping pieces respectively, the guide protrusions are clamped with the limiting clamping grooves.

8. The laser projection device of claim 6, wherein a hollow groove is formed in the housing on a side thereof close to the caster body, the hollow groove being adjacent to the arc-shaped sliding groove, and the hollow groove is closer to the locking block relative to the arc-shaped sliding groove.

9. A laser projection device as claimed in any one of claims 1 to 5, characterized in that the side of the grip member adjacent to the housing is provided with an auxiliary support, the side of the auxiliary support facing away from the grip member being in contact with the housing.

10. The laser projection device of any of claims 2 to 5, wherein a portion of each of the clamping members between the first end portion and the second end portion has an adapter member having a connection hole;

the clamping jig further includes: the rotating shaft sequentially penetrates through the connecting holes in the two adapter pieces to be respectively connected with the two adapter pieces.

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