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CN-115616840-B - Laser projection device

CN115616840BCN 115616840 BCN115616840 BCN 115616840BCN-115616840-B

Abstract

The application discloses laser projection equipment, and belongs to the field of projection display. The laser projection 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 handle piece drives the locking block to rotate, and then an 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 acting force contacts with the connecting rod. Thus, the clamping fixture and the locking block integrated in the accommodating cavity cannot be mistakenly touched to cause bad movement. In addition, through the cooperation chucking effect of latch segment and chucking anchor clamps, even the truckle body is touched by mistake, truckle body takes place pivoted probability also lower. In this way, the height distance between the caster body for supporting the housing in the laser projection apparatus and the housing is not changed, i.e., the laser projection apparatus as a whole is not inclined.

Inventors

  • LIN DAWEI

Assignees

  • 青岛海信激光显示股份有限公司

Dates

Publication Date
20260505
Application Date
20220919

Claims (6)

  1. 1. A laser projection device, comprising: a housing having a receiving cavity; the casters comprise a caster body and a connecting rod, wherein 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 positioned outside the accommodating cavity is fixedly connected with the caster body; The clamping fixture comprises two clamping pieces and a friction increasing pad, wherein each clamping piece is provided with a first end part and a second end part which are oppositely arranged, a clamping space is formed between the first end parts of the two clamping pieces, and part of the connecting rod is positioned in the clamping space; a locking block positioned between the second ends of the two clamping pieces and a handle piece positioned outside the accommodating cavity and fixedly connected with the locking block; Wherein the handle piece is configured to drive the locking blocks to rotate, so that the locking blocks apply opposite acting forces to the second ends of the two clamping pieces respectively, or the locking blocks stop applying opposite acting forces to the second ends of the two clamping pieces; One side of the shell, which is close to the caster body, is provided with an arc-shaped chute communicated with the accommodating cavity, one side of the handle piece, which is close to the shell, is provided with a guide protrusion, and at least part of the guide protrusion is positioned in the arc-shaped chute; The arc-shaped chute comprises a limiting clamping groove and a chute body communicated with the limiting clamping groove, wherein when the locking blocks respectively apply opposite acting forces to the second end parts of the two clamping pieces, the guide protrusions are clamped with the limiting clamping groove, one surface, close to the castor body, of the shell is also provided with a hollowed-out groove which is arranged adjacent to the arc-shaped chute, and the hollowed-out groove is closer to the locking blocks relative to the arc-shaped chute.
  2. 2. The laser projection device of claim 1, wherein a side of the first end of each clip adjacent to the connecting rod has a limit slot; when the locking blocks apply opposite acting forces to the second end parts of the two clamping pieces respectively, groove surfaces of limiting grooves formed in the first end parts of the two clamping pieces are abutted to the side surfaces of the connecting rod.
  3. 3. The laser projection device of claim 2, wherein the slot surface within the limiting slot includes a first side plane and a second side plane, the first side plane intersecting the second side plane.
  4. 4. The laser projection device of claim 1, wherein the clamping fixture further comprises a resilient member positioned between the first ends of the two clamping members, the resilient member having two ends fixedly connected to the first ends of the two clamping members, respectively.
  5. 5. The laser projection device as claimed in any one of claims 1 to 4, wherein a side of the handle member adjacent to the housing has an auxiliary support member, a side of the auxiliary support member facing away from the handle member being in contact with the housing.
  6. 6. The laser projection device of any of claims 1 to 4, wherein a portion of each of the clips between the first end and the second end has an adapter, the adapter having a connection hole; The clamping fixture further comprises a rotating shaft, wherein the rotating shaft sequentially penetrates through the connecting holes on the two adapter pieces to be connected with the two adapter pieces respectively.

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 technology, laser projection systems are increasingly used in people's work and life. The laser projection system mainly comprises a laser projection device, a projection screen and a television cabinet. The laser projection device emits a light beam to the projection screen, and the projection screen receives the light beam to display pictures. Currently, laser projection devices generally include a housing and a plurality of casters coupled to the housing. The shell can be supported on the television cabinet through the plurality of casters, and the distance between the shell and the television cabinet can be adjusted by rotating the casters so as to adjust the position of a picture projected on the projection screen. In addition, in order to lock the rotation of the caster, a lock nut connected to the caster is generally provided outside the housing. However, in the use process of the laser projection equipment, the lock nut is easily touched, so that the lock nut is very easy to rotate after locking failure of the lock nut on the truckle, and further the display effect of a picture projected on the projection screen is poor. Disclosure of Invention The embodiment of the application provides laser projection equipment. The problem that rotation is very easy to occur due to false touch of casters of laser projection equipment in the prior art can be solved, and the technical scheme is as follows: in one aspect, there is provided a laser projection apparatus comprising: a housing having a receiving cavity; the casters comprise a caster body and a connecting rod, wherein 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 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 part of the connecting rod is positioned in the clamping space; the locking block is connected with the other end of the clamping fixture, and the handle piece is positioned outside the accommodating cavity and fixedly connected with the locking block; The handle piece is configured to drive the locking block to rotate, so that one end of the clamping fixture applies force to the connecting rod or one end of the clamping fixture stops applying force to the connecting rod. The technical scheme provided by the embodiment of the application has the beneficial effects that at least: A laser projection device may include a housing, a plurality of casters, a clamp fixture, a locking block, and a handle member. The clamping fixture and the locking block connected with the clamping fixture are arranged in the accommodating cavity in the shell, and the handle piece fixedly connected with the locking block is arranged outside the accommodating cavity. After the height of the laser projection equipment is adjusted, the locking block can be driven to rotate conveniently 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 connecting rod contacts with the locking block. Therefore, in the use process of the laser projection equipment, the clamping fixture and the locking block integrated in the accommodating cavity cannot be mistakenly touched to cause 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, truckle body takes place pivoted probability also lower. Therefore, the height distance between the caster body and the shell for supporting the shell in the laser projection equipment is not changed, namely, the laser projection equipment is not inclined as a whole, and the display effect of pictures projected on the laser projection screen by the laser projection equipment is good. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic view of a part of a laser projection apparatus according to an embodiment of the present application; FIG. 2 is a schematic illustration of the clamping fixture, locking block, and handle member of FIG