CN111121732A

CN111121732A - Line projector

Info

Publication number: CN111121732A
Application number: CN201911352875.7A
Authority: CN
Inventors: 施其杰; 袁通甫; 刘行; 李明凯; 迮会越
Original assignee: Aukey Technology Co Ltd
Current assignee: Aukey Technology Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-05-08

Abstract

The invention relates to a line projector, comprising: a housing having at least one first surface, the first surface being in a horizontal or vertical direction; the first surface is provided with a bulge; the bulge is provided with at least two light-emitting surfaces connected with the first surface, and the light-emitting surfaces are provided with first light-emitting ports; the movement is arranged in the inner cavity of the shell; the core includes: a self-balancing bracket; the first laser generator is arranged on the self-balancing bracket and used for emitting a first laser beam which is vertical and points to the corresponding first surface; and the first lens is arranged on the self-balancing support and is positioned at one end, close to the first surface, of the corresponding first laser generator so as to change the direction of the first laser beam to the sub laser beams which are respectively emitted from the at least two first light emitting ports and are parallel to the first surface. According to the line projector, each first surface can emit at least two directions of sub laser beams, so that lines can be projected in multiple directions, and the line projector is convenient to use.

Description

Line projector

Technical Field

The invention relates to the field of line projectors, in particular to a line projector.

Background

Traditionally, line projectors are widely used in the fields of surveying, construction and decoration. The common line projection instrument can only emit one or two straight lines on each surface, has a single line projection mode, cannot generate line projection in multiple directions, and brings inconvenience for use.

Disclosure of Invention

In view of this, there is a need for a demarcation device that can produce a line in multiple directions.

A level, comprising:

a housing having at least one first surface, the first surface being in a horizontal or vertical direction; the first surface is provided with a bulge; the projection is provided with at least two light-emitting surfaces connected with the first surface, and the light-emitting surfaces are provided with first light-emitting ports; and

the movement is arranged in the inner cavity of the shell; the movement includes:

a self-balancing bracket;

the first laser generator is arranged on the self-balancing bracket and used for emitting a first laser beam which is vertical to and points to the corresponding first surface; and

the first lens is arranged on the self-balancing support and positioned at one end, close to the first surface, of the corresponding first laser generator so as to change the direction of the first laser beam to the sub laser beams which are respectively emitted by the at least two first light emitting ports and are parallel to the first surface.

According to the line projector, each first surface can emit at least two directions of sub laser beams, so that lines can be projected in multiple directions, and the line projector is convenient to use.

In one embodiment, the protrusion has four light emitting surfaces; the four light emitting surfaces are sequentially connected and are adjacent to each other and perpendicular to each other.

In one embodiment, the first lens is cylindrical and is coaxial with the first laser beam generated by the corresponding first laser generator; a conical groove is formed in the surface, far away from the first laser generator, of the first lens; the included angle between the side wall of the conical groove and the axis of the first lens is 45 degrees; when the light beam is emitted from the inside of the first lens to the side wall of the conical groove, the critical angle of total reflection is less than 45 degrees.

In one embodiment, the first lens is conical, the first lens is coaxial with a first laser beam emitted by the corresponding first laser generator, and the vertex angle of the first lens is directed to the first laser emitter; the included angle between the side wall of the first lens and the axis of the first lens is 45 degrees; when the light beam is emitted to the side wall of the first lens from the outer side of the first lens, the critical angle of total reflection of the first lens is less than 45 degrees.

In one embodiment, the first laser generator is a laser diode.

In one embodiment, the housing further comprises at least one second surface, and the second surface is provided with a second light outlet;

the movement further comprises a second laser generator arranged on the self-balancing support, and the second laser generator is used for emitting a second laser beam pointing to the corresponding second light outlet.

In one embodiment, the second laser generator is a laser diode.

In one embodiment, the device further comprises a battery and a PCB board; the shell comprises a lower shell and an upper shell; the battery and the movement are adjacently arranged on the lower shell; the PCB is arranged on one side of the battery, which is far away from the lower shell.

In one embodiment, a buffer layer is attached to the outer surface of the shell, and the outer surface of the buffer layer is provided with textures.

In one embodiment, the buffer layer is a polypropylene layer or a polyethylene layer.

Drawings

Fig. 1 is a schematic structural diagram of a level provided in an embodiment of the present invention.

FIG. 2 is a schematic view of an exploded view of the level shown in FIG. 1.

Figure 3 is a cross-sectional view of the level of figure 1.

Fig. 4 is an optical path diagram of the first laser beam passing through the first lens in fig. 3.

Fig. 5 is an optical path diagram of a first laser beam passing through a first lens in a laser projector according to another embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a level provided in another embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a level according to another embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a level provided in another embodiment of the present invention.

100. A line projector; 110. a housing; 111. a first surface; 1111. a protrusion; 1112. a light-emitting surface; 1114. a first light outlet; 112. an inner cavity; 113. a second surface; 1131. a second light outlet; 114. a lower housing; 116. an upper housing; 117. decorating strips; 118. texture; 130. a movement; 131. a self-balancing bracket; 133. a first laser generator; 135. a first lens; 1351. a conical groove; 1353. an incident surface; 1355. side groove walls; 1356. a lateral cone wall; 137. a second laser generator; 150. a battery; 170. a PCB board; a. a first laser beam; b. a second laser beam; c. a sub-laser beam; d. an axis.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

It will be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a surface is said to "engage" another surface, it may be the direct engagement of the two surfaces or there may be both intervening surfaces present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 4, a demarcation device 100 according to an embodiment of the present invention includes a housing 110 and a movement 130. Specifically, the housing 110 has at least one first surface 111. The first surface 111 is provided with a protrusion 1111, the protrusion 1111 has four light emitting surfaces 1112 connected to the first surface 111, and the light emitting surfaces 1112 are provided with first light emitting ports 1114. The cartridge 130 is disposed in the inner cavity 112 of the housing 110.

More specifically, movement 130 includes a self-balancing stand 131, a first laser generator 133 disposed on self-balancing stand 131, and a first lens 135 disposed on self-balancing stand 131. The first laser generator 133 is configured to emit a first laser beam a that is perpendicular to and directed to the corresponding first surface 111. The first lens 135 is located at an end of the corresponding first laser generator 133 near the first surface 111 to change the direction of the first laser beam a to the sub-laser beams c emitted from the four first light outlets 1114 and parallel to the first surface 111.

In the line projector 100, each first surface 111 can emit sub laser beams c in four directions, so that lines can be projected in four directions, and the use is convenient. Specifically, when the projection lines emitted by the line projector 100 are required to be parallel to the sub-laser beams c emitted from the four first light-emitting ports 1114, the second laser beams b in four directions can be emitted simultaneously after the line projector 100 is adjusted to a proper position, and a new line projector 100 is not required to be added, so that the use is convenient.

In this embodiment, the first laser beam a can be dispersed into the sub-laser beams c in four different directions only by the lens, and the structure is simple.

It should be noted that the self-balancing bracket 131 may be in a balanced position through its own structure, or the self-balancing bracket 131 may be disposed on another structure capable of self-balancing, so as to achieve the self-balancing effect of the self-balancing bracket 131.

In this embodiment, the housing 110 includes a first surface 111, i.e. the housing 110 includes a first surface 111 having a protrusion 1111. The first surface 111, the first lens 135 and the first laser generator 133 are disposed correspondingly. In another possible embodiment, if the housing 110 includes at least two first surfaces 111, that is, the housing 110 includes at least two surfaces having the protrusions 1111, each first surface 111 is correspondingly provided with the first lens 135 and the first laser generator 133.

In this embodiment, the first surface 111 is located on the upper surface of the housing 110, and the first surface 111 is along the horizontal direction. The first surface 111 is oriented horizontally, meaning that the first surface 111 is oriented horizontally when the level 100 is in operation. So that the sub laser beams c are all emitted in a horizontal state. Of course, in another possible embodiment, if the first surface 111 is located on the lower surface of the housing 110 and the line projector 100 is operated, the first surface 111 is along the horizontal direction, and the sub-laser beam c is emitted in the horizontal state. If the first surface 111 is located on a side surface of the housing 110 perpendicular to the upper surface and the line projector 100 is in operation, the first surface 111 is along the vertical direction, and the sub-laser beam c is emitted in a direction parallel to the side surface.

Of course, in another possible embodiment, when the line projector 100 is operated, the first surface 111 may not be in the horizontal or vertical direction, and accordingly, the sub laser beam c emitted from the first light outlet 1114 is no longer in the horizontal or vertical direction, but is in the parallel direction with the first surface 111.

In this embodiment, the four light emitting surfaces 1112 are sequentially connected, and the adjacent light emitting surfaces 1112 are perpendicular to each other. Therefore, the sub laser beams c emitted from the first light outlets 1114 of the two opposite light emitting surfaces 1112 are parallel and coaxial, and the sub laser beams c emitted from the first light outlets 1114 of the two adjacent light emitting surfaces 1112 are perpendicular.

It is understood that in other possible embodiments, the protrusion is not limited to having four light emitting surfaces, but may have two, three or more than four light emitting surfaces.

In this embodiment, the first lens 135 has a cylindrical shape, and the first lens 135 is coaxial with the first laser beam a generated by the first laser generator 133, i.e. the axis d in fig. 4; the surface of the first lens 135 remote from the first laser generator 133 is provided with a conical groove 1351. The side groove walls 1355 of the conical groove 1351, i.e., the groove walls that form an acute angle with the axis of the conical groove 1351. Specifically, the side channel walls 1355 are angled 45 ° from the axis of the first lens 135, i.e., the angle m in the figure is 45 °. When the light is emitted from the inside of the first lens 135 toward the side wall of the conical groove 1351, the critical angle at which total reflection occurs is less than 45 °.

Specifically, the surface of the first lens 135 close to the first laser generator 133 is set as the incidence surface 1353. The first laser beam a emitted by the first laser generator 133 firstly enters the first lens 135 through the vertical incident surface 1353, and is emitted horizontally through the sidewall of the conical groove 1351, and then is emitted vertically through the outer side surface of the first lens 135. The specific optical path diagram is shown in fig. 4.

It is understood that the structure of the first lens 135 is not limited thereto. For example, referring to fig. 5, in another possible embodiment, the first lens 135 has a conical shape, the first lens 135 is coaxial with the first laser beam a emitted by the first laser generator 133, i.e., the axis d in fig. 5, and the vertex of the first lens 135 is directed to the first laser emitter. The side tapered wall 1356 of the first lens 135 is the side wall that forms an acute angle with the axis of the first lens 135. Specifically, the side cone wall 1356 is angled 45 ° from the axis of the first lens 135, i.e., the angle n in the figure is 45 °. When the light beam is emitted from the outside of the first lens 135 to the sidewall of the first lens 135, the critical angle of total reflection of the first lens 135 is less than 45 °. So that the first laser beam a is directly incident on the sidewall of the first lens 135 and is totally reflected and then emitted, as shown in fig. 5.

In this embodiment, the first laser generator 133 is a laser diode. Of course, the first laser generator 133 is driven by a driving circuit. The specific structural arrangement of the driving circuit is conventional in the art, and is not described herein again. It will be appreciated that in other possible embodiments, the first laser generator 133 is not limited to laser diodes, but may be other solid state or gas lasers.

In this embodiment, the housing 110 further includes a second surface 113, and the second surface 113 is provided with a second light outlet 1131. The movement 130 further includes a second laser generator 137 disposed on the self-balancing bracket 131, and the second laser generator 137 is configured to emit a second laser beam b that is vertical and directed to the corresponding second light outlet 1131.

Specifically, in the present embodiment, the second surface 113 is a side surface of the housing 110. When the line projector 100 is in the working state, the second surface 113 is a vertical surface, and the second laser beam b emitted by the second laser generator 137 is along a direction horizontal to and perpendicular to the second surface 113.

It will be appreciated that in other possible embodiments, the line projector is in operation and the second surface is not limited to a vertical surface, but may be arranged in a horizontal direction or at an acute angle to the vertical, as desired. The second laser beam generated by the second laser generator is not limited to the horizontal direction, and can be set to the vertical direction or the direction with an acute included angle with the horizontal direction as required. The second laser beam emitted by the second laser generator is not limited to be perpendicular to the second surface, and the second laser beam can be emitted from the second light outlet of the second surface.

In this embodiment, the second surface 113 is not coplanar with the first surface 111. It is understood that in other possible embodiments, the second surface 113 may also be coplanar with one of the first surfaces 111.

In this embodiment, the second laser generator 137 is a laser diode. Of course, the second laser generator 137 is driven by a driving circuit. The specific structural arrangement of the driving circuit is conventional in the art, and is not described herein again. It will be appreciated that in other possible embodiments, the second laser generator 137 is not limited to laser diodes, but may be other solid state or gas state lasers.

In this embodiment, the demarcation device 100 further includes a battery 150 and a PCB 170. The housing 110 includes a lower housing 114 and an upper housing 116. Battery 150 and deck 130 are adjacent and both are disposed on lower housing 114. PCB board 170 is disposed on a side of battery 150 remote from lower housing 114. Therefore, the structure arrangement inside the shell 110 of the line projector 100 is compact, the volume of the line projector 100 is reduced, and the storage, carrying or use of the line projector 100 is facilitated.

In this embodiment, a buffer layer is attached to the outer surface of the housing 110. The buffer layer can alleviate the external force of acting on the demarcation device 100 to reduce the damage of the core 130, the battery 150 and the PCB 170 and other structures caused by the collision, the bump or the fall of the demarcation device 100, and further ensure the normal use of the demarcation device 100.

Moreover, the arrangement of the buffer layer also reduces the hardness of the outer surface of the line projector 100, thereby increasing the hand feeling of the outer surface of the line projector 100. The cushioning layer may provide a more comfortable tactile feel to the operator when operating the demarcation device 100.

Further, in this embodiment, the outer surface of the cushioning layer is provided with texture 118. In particular, texture 118 is a bump provided on the outer surface of the cushioning layer, thereby increasing the roughness of the cushioning layer. Preventing the lining tool 100 from slipping off when the operator grips the lining tool 100. In other possible embodiments, the outer surface of the buffer layer may be provided with a recess, or may be roughened to form a texture on the outer surface of the buffer layer.

Furthermore, in this embodiment, a decorative strip 117 is further disposed on an outer surface of the housing 110 to increase a visual effect of the demarcation device 100.

Optionally, the buffer layer is a polypropylene layer or a polyethylene layer. Of course, the buffer layer is not limited thereto, and may be a buffer layer formed of another soft glue layer or a material having a buffer function.

As shown in fig. 5, another embodiment of the present invention provides a level 200 that differs from level 100 in that level 200 includes two second surfaces 113. Therefore, compared with the line projector 100, the line projector 200 can emit more lines, thereby increasing the application range of the line projector 200 and facilitating the use of operators. When the projection lines to be projected by the line projector 200 are parallel to the second laser beams b projected from the second light outlets 1131 of the two second surfaces 113, the second laser beams b in two directions can be projected sequentially or simultaneously after the line projector 200 is adjusted to a proper position, and the line projector 200 does not need to be rotated or replaced in the middle, thereby improving the operation efficiency.

In this embodiment, when the level gauge 200 is in operation, the two second surfaces 113 are both parallel to the vertical direction, and the two second surfaces 113 abut. The second laser beams b emitted from the second light outlets 1131 are also in the horizontal direction and perpendicular to the corresponding second surfaces 113. So that the second laser beams b emitted from the two second light outlets 1131 are perpendicular to each other. It will be appreciated that in other possible embodiments, the two second surfaces may not be parallel to the vertical or may not abut during operation of the level 200, depending on the needs of the work scenario. Furthermore, the second laser beams emitted from the two second light outlets may not be perpendicular.

Furthermore, in other possible embodiments, the housing of the line projector is not limited to only one or two second surfaces, but may have more than two second surfaces.

Referring to fig. 1 and 6, in the lining projector 100 and the lining projector 200, the second surface 113 has a second light outlet 1131, and each light outlet can only emit the artistic second laser beam b. It will be appreciated that in other possible embodiments, the second surface may also have two second light outlets, i.e. two second laser beams may be emitted from the second surface. Optionally, two second laser beams emitted from the same second surface are parallel.

As shown in fig. 6, another embodiment of the invention provides a lining scope 300 that differs from the lining scope 100 in that the lining scope 300 does not have a second surface 113 but has two first surfaces 111. When the sub laser beams c parallel to the corresponding surfaces and different in direction need to be emitted from different surfaces of the line projector, two groups of sub laser beams c parallel to the corresponding first surfaces 111 can be emitted sequentially or simultaneously after the line projector 300 is adjusted to a proper position, the line projector 300 does not need to be rotated or replaced in the middle, and the operation efficiency is improved.

In this embodiment, a first surface 111 is located on the upper surface of the housing 110, and when the level gauge 300 is operated, the first surface 111 is along the horizontal direction; the other first surface 111 is located at the side of the housing 110, and when the level 300 is in operation, the first surface 111 is in the vertical direction. In the embodiment, the two first surfaces 111 are adjacent to each other.

As shown in fig. 7, another embodiment of the invention provides a lining scope 400 that differs from the lining scope 100 in that the lining scope 300 does not have a second surface 113 but has three first surfaces 111. When the sub laser beams c parallel to the corresponding surfaces and different in direction need to be emitted from different surfaces of the line projector, after the line projector 300 is adjusted to a proper position, three groups of sub laser beams c parallel to the corresponding first surfaces 111 can be emitted sequentially or simultaneously, the line projector 300 does not need to be rotated or replaced in the middle, and the operation efficiency is improved.

In this embodiment, a first surface 111 is located on the upper surface of the housing 110, and when the level gauge 300 is operated, the first surface 111 is along the horizontal direction; the two first surfaces 111 are located at the sides of the housing 110, and the two first surfaces 111 are in the vertical direction when the level gauge 300 is in operation. In the embodiment, two first surfaces 111 are adjacent to each other.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A demarcation device, comprising:

a self-balancing bracket;

2. The level of claim 1, wherein the protrusion has four of the exit facets; the four light emitting surfaces are sequentially connected and are adjacent to each other and perpendicular to each other.

3. The level according to claim 2, wherein the first lens is cylindrical and is coaxial with the first laser beam generated by the corresponding first laser generator; a conical groove is formed in the surface, far away from the first laser generator, of the first lens; the included angle between the side wall of the conical groove and the axis of the first lens is 45 degrees; when the light beam is emitted from the inside of the first lens to the side wall of the conical groove, the critical angle of total reflection is less than 45 degrees.

4. The demarcation device of claim 2, wherein the first lens is conical, the first lens is coaxial with the first laser beam emitted by the corresponding first laser generator, and the apex angle of the first lens is directed to the first laser emitter; the included angle between the side wall of the first lens and the axis of the first lens is 45 degrees; when the light beam is emitted to the side wall of the first lens from the outer side of the first lens, the critical angle of total reflection of the first lens is less than 45 degrees.

5. The lining tool of claim 1, wherein the first laser generator is a laser diode.

6. The level according to any one of claims 1 to 5, wherein the housing further comprises at least one second surface, the second surface being provided with a second light outlet;

7. The level of claim 6, wherein the second laser generator is a laser diode.

8. The level according to claim 1, further comprising a battery and a PCB board; the shell comprises a lower shell and an upper shell; the battery is adjacent to the machine core and arranged on the lower shell; the PCB is arranged on one side of the battery, which is far away from the lower shell.

9. The demarcation device of claim 1, wherein a cushioning layer is affixed to an outer surface of the housing, and the outer surface of the cushioning layer is textured.

10. The level according to claim 9, wherein the buffer layer is a polypropylene layer or a polyethylene layer.