WO2017104904A1

WO2017104904A1 - Rotating body

Info

Publication number: WO2017104904A1
Application number: PCT/KR2016/002955
Authority: WO
Inventors: 이종원
Original assignee: 한화테크윈 주식회사
Priority date: 2015-12-15
Filing date: 2016-03-24
Publication date: 2017-06-22
Also published as: KR20170071181A

Abstract

The present invention provides a rotating body. The present invention comprises: a driving part; a first housing connected to be rotatable to the driving part; and a second housing coupled to the first housing and disposed such that a part of an internal surface of the second housing is spaced from a part of an external surface of the first housing, wherein at least one of the first housing and the second housing comprises a first blade protruding from a surface thereof.

Description

Rotating body

The present invention relates to an apparatus, and more particularly, to a rotating body.

In general, in a rotating body performing a rotational movement, heat may be generated in a component inside the rotating body. Such a rotating body generally uses electricity, and includes a circuit to perform precise control. For example, such a rotating body may include a device such as a lidar.

In the case of such a rotating body, if the temperature inside the rotating body increases, components inside the rotating body may malfunction or fail. In order to prevent this, heat of the rotating body may be discharged to the outside in various ways. Specifically, a fan or a heat dissipation fin may be installed to discharge heat of the rotating body to the outside.

Such a rotating body is specifically disclosed in Korean Patent Publication No. 2009-0036755 (Invention name: 3D space recognition sensor, Applicant: LG Innotek Co., Ltd.).

Embodiments of the present invention seek to provide a rotating body.

An aspect of the present invention includes a driving unit, a first housing rotatably connected to the driving unit, and a second housing coupled to the first housing and disposed to be spaced apart from an outer surface portion of the first housing. At least one of the first housing and the second housing may provide a rotating body including a first blade protruding from the surface.

Embodiments of the present invention can effectively lower the temperature inside the first housing. In addition, embodiments of the present invention can prevent malfunction of the devices inside the first housing.

1 is an exploded perspective view showing a rotating body according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating the rotating body illustrated in FIG. 1.

3 is a perspective view illustrating a second housing illustrated in FIG. 1.

4 is a perspective view illustrating the first blade illustrated in FIG. 3.

5 is a cross-sectional view showing a rotating body according to another embodiment of the present invention.

In the present embodiment, the first blade may be disposed to be inclined.

In the present embodiment, the first blade may be formed in a curve.

In the present embodiment, the first blade may have an airfoil shape in cross section.

In the present embodiment, a plurality of first blades may be provided, and the plurality of first blades may be spaced apart from each other.

In the present embodiment, the height of the first blade may be equal to the distance between the first housing and the second housing.

In the present embodiment, the height of the first blade may be formed differently along the longitudinal direction of the first blade.

In the present embodiment, the first blade may be lower than other portions of the first contacting the outside air with respect to the rotation direction of the first housing.

In the present embodiment, at least one of the first housing and the second housing may further include a second blade for guiding outside air between the first housing and the second housing.

In this embodiment, the second housing may be formed with a through hole connecting the outside and the space between the first housing and the second housing.

In the present embodiment, an outer surface of the first housing may be anodized.

In the present embodiment, the plurality of first blades may be provided, and the plurality of blades may be arranged to form a spiral in the height direction of the first housing.

The invention will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Meanwhile, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or elements. Or does not exclude additions. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another.

The rotating body according to the embodiments of the present invention may be installed in various rotating bodies. For example, the rotating body may include a LiDAR. In another embodiment, the rotating body may include a radar. In another embodiment, the rotating body may include a surveillance camera. However, hereinafter, it will be described in detail with respect to the case that the rotor includes a lidar for the convenience of description.

1 is an exploded perspective view showing a rotating body according to an embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating the rotating body illustrated in FIG. 1. 3 is a perspective view illustrating a second housing illustrated in FIG. 1. 4 is a perspective view illustrating the first blade illustrated in FIG. 3.

1 to 4, the rotating body 100 includes a body part 110, a driving part 120, a first housing 130, a second housing 140, a first blade 150, and a sensor part ( 161, the laser generator 170, and the controller 190 may be included.

The body unit 110 may form an appearance and may be installed in an external object or the outside. In this case, the body 110 may be installed to be fixed to an external object or the outside.

The driver 120 may be installed in the body 110. In this case, the driving unit 120 may include a motor and the like, and may generate rotational force during operation.

The first housing 130 may be connected to the driver 120. In this case, the first housing 130 may have a space formed therein, and the sensor unit 161 and the laser generation unit 170 may be installed in the space.

The first housing 130 may be formed of a metal material. In particular, the first housing 130 may be formed of an aluminum material. In this case, the surface of the first housing 130 may be in an anodized state. In particular, the outer housing 130 of the first housing 130 facing the inner surface of the second housing 140 may be anodized to enhance corrosion resistance.

The first housing 130 may include a first sub-housing 131 formed to open at both sides thereof, and a second sub-housing 132 shielding an opened portion of the first sub-housing 131. In this case, the first sub housing 131 may be formed in a cylindrical shape. Another opened portion of the first sub-housing 131 may be sealed by the second housing 140. In this case, the inside of the first sub housing 131 may be sealed by being completely shielded from the outside.

The first housing 130 and the body 110 may be relative to each other. In detail, the body 110 may stop while the first housing 130 may rotate. In such a case, the bearing part 191 may be installed between the second sub housing 132 and the body part 110. In addition, a sealing part 192 may be installed between the second sub housing 132 and the body part 110 to prevent moisture or the like from penetrating between the second sub housing 132 and the body part 110.

The first housing 130 may include a guide part 133 disposed in the second sub housing 132. The guide part 133 may be formed to protrude from an outer surface of the second sub housing 132. In this case, a plurality of guide parts 133 may be provided, and the plurality of guide parts 133 may be disposed to be spaced apart from each other on the outer surface of the second sub-housing 132. In addition, the plurality of guide parts 133 may be disposed to face each other in a pair. In this case, the distance between the outer surfaces of the guide portion 133 facing each other may be equal to the diameter of the inner surface of the second housing 140.

The first housing 130 may include a transmission window 134 through which the laser generated by the laser generation unit 170 passes and the reflected laser passes. In this case, the transmission window 134 may diffuse the laser or improve the straightness of the laser, and may be formed of a transparent material. For example, the transmission window 134 may be formed in the form of a lens.

The height of the guide part 133 measured from the outer surface of the second sub housing 132 may be formed the same as or similar to the distance from the outer surface of the second sub housing 132 to the inner surface of the second housing 140.

The guide part 133 may guide the second housing 140 when the first housing 130 is inserted into the second housing 140. That is, the guide part 133 may contact the inner surface of the second housing 140 to guide the end of the second housing 140 when the second housing 140 is assembled, and the end of the second housing 140. May be spaced apart from the inner surface of the first housing 130.

Meanwhile, the second housing 140 may be formed similarly to the first housing 130. In this case, the second housing 140 may be installed to surround the outer surface of the first housing 130. For example, a portion (or top) of the second housing 140 may shield the opening of the first sub housing 131. In addition, another portion (or side surface) of the second housing 140 may be disposed to be spaced apart from the outer surface of the first sub-housing 131 to some extent to form a space together with the first sub-housing 131.

A portion of the second housing 140 in which the second sub housing 132 is disposed may be formed to be opened. At this time, the guide portion 133 is installed in the opened portion of the second housing 140 to guide the second housing 140 when the second housing 140 is installed.

The through hole 141 may be formed in the second housing 140. In this case, the through hole 141 may be formed in a portion of the second housing 140 that is coupled to the first sub housing 131. In addition, at least one passage hole 141 may be formed in the second housing 140, and when the plurality of passage holes 141 are formed, the plurality of passage holes 141 may be formed to be spaced apart from each other.

The through hole 141 may communicate a space formed by the second housing 140 and the first sub housing 131 with the outside. Therefore, the outside air may flow from the opened portion of the second housing 140 to the passage hole 141.

A transmission hole 142 may be formed in the second housing 140 to correspond to the transmission window 134. In this case, the transmission hole 142 may be a path of the laser.

The first blade 150 may be provided in at least one of the first housing 130 and the second housing 140. For example, the first blade 150 may protrude from the surface of the first sub housing 131. In addition, the first blade 150 may protrude from an inner surface of the second housing 140. In another embodiment, the first blade 150 may protrude from the surface of the first sub-housing 131 and the inner surface of the second housing 140. However, hereinafter, the first blade 150 will be described in detail with reference to the case where the first blade 150 protrudes from the inner surface of the second housing 140 for convenience of description.

The first blade 150 may protrude from the inner surface of the second housing 140 to the outer surface of the second sub housing 132. The height of the first blade 150 may be formed to vary. In this case, the height of the first blade 150 may be measured from the surface of the first housing 130 or the surface of the second housing 140 on which the first blade 150 is installed.

For example, the height of the first blade 150 may be uniformly formed in the longitudinal direction of the first blade 150. In this case, the height of the first blade 150 may be less than or equal to the distance between the outer surface of the first sub-housing 131 and the inner surface of the second housing 140.

In another embodiment, the heights of the first blades 150 may be formed differently from each other in the longitudinal direction of the first blades 150. In this case, a height of the first blade 150 may be formed higher than a portion of the first blade 150 of a portion of the first blade 150. In this case, the largest value of the height of the first blade 150 may be equal to or less than a distance between the outer surface of the first sub-housing 131 and the inner surface of the second sub-housing 132.

The first blade 150 as described above may be formed in a straight or curved shape. Specifically, the first blade 150 may form a straight line in the longitudinal direction of the first blade 150. In another embodiment, the first blade 150 may be formed in a curved shape in the length direction of the first blade 150.

The first blade 150 may have an air-foil cross-sectional area perpendicular to the height direction of the first blade 150.

The first blade 150 may be formed to be inclined with respect to the ground in the longitudinal direction of the first blade 150. In this case, the distance from the ground to the first blade 150 of the first blade 150 may vary in the longitudinal direction of the first blade 150. In particular, the distance from the ground to the first blade 150 may be larger toward the rotation direction of the first housing 130. The distance from the ground to the first blade 150 may be smaller as the first contact portion of the first blade 150 with the outside air when the first housing 130 rotates, and the greater the distance from the first blade 150. For example, the distance from the ground to each first blade 150 may be sequentially increased from the first blade 150 disposed at the lowest place to the first blade 150 disposed at the highest place.

The first blade 150 as described above may be provided in plurality. In this case, the plurality of first blades 150 may be disposed to be spaced apart from each other.

The plurality of first blades 150 may be arranged in various forms. For example, the plurality of first blades 150 may be disposed at portions of the second housing 140 at the same distance from the ground. In another embodiment, the plurality of first blades 150 may be arranged to form any line having a spiral shape in the height direction of the second housing 140. In another embodiment, the plurality of first blades 150 may be arranged to form a plurality of lines in the height direction of the second housing 140. At this time, the arrangement of the plurality of first blades 150 is not limited to the above, and the through hole 141 or the through hole 141 from the opened portion of the second housing 140 when the first housing 130 is rotated. ) May be any shape capable of forming a flow of outside air from the open portion of the second housing 140.

The shape and arrangement of the first blade 150 as described above is not limited to the above, and all that can flow by turning the outside air flowing into the space between the first housing 130 and the second housing 140. Form and arrangement, and the like.

The laser generation unit 170 may be disposed in the first housing 130 to generate a laser. In this case, the laser generation unit 170 may be divided into a portion for generating a laser and a portion for irradiating the laser.

The sensor unit 161 may detect a laser incident through the lens unit 162. In this case, the lens unit 162 may adjust the path of the incident laser.

On the other hand, looking at the operation of the rotating body 100 as described above, the rotating body 100 may generate a laser in the laser generating unit 170 to emit to the outside. At this time, the rotating body 100 may be fixed to the external structure, the external, etc., the external structure may be movable.

When the laser is generated in the laser generation unit 170 and emitted to the outside, the laser may be reflected after the impact on the external object. The reflected laser may be incident to the sensor unit 161 and sensed by the sensor unit 161.

The controller 190 may acquire an image of an external object based on the data detected by the sensor unit 161. In this case, the controller 190 may obtain at least three coordinates from the data sensed by the sensor unit 161 to implement a three-dimensional image on the screen.

The control unit 190 as described above may be installed inside the rotating body 100, in another embodiment may be installed outside.

Meanwhile, heat may be generated in the laser generation unit 170 while the above operation is in progress. In this case, the heat generated by the laser generation unit 170 may stay inside the first housing 130 through radiation or convection. In particular, the radiant heat generated from the laser generation unit 170 may be transmitted to the surface of the first housing 130 to be emitted to the outside.

In this case, the temperature inside the first housing 130 may be lowered through heat exchange with the outside air in the first housing 130. At this time, when the heat transfer is not smooth on the surface of the first housing 130, the temperature inside the first housing 130 may rise rapidly.

Due to the temperature rise as described above, the temperature of the laser generation unit 170 may continuously increase, and the temperature of the sensor unit 161 may also continuously increase. At this time, the internal structure of the laser generating unit 170 and the sensor unit 161 is continuously increased, the internal structure may be damaged or the operation may be stopped. In addition, when the temperature continues to rise, the laser generating unit 170 and the sensor unit 161 may be damaged or fail, thereby causing the rotating body 100 to fail to operate. However, in the case of the rotating body 100 according to the embodiments of the present invention, it is possible to effectively lower the temperature inside the first housing 130.

Specifically, as described above, when the laser generation unit 170 emits the laser to the outside, the driving unit 120 may operate to rotate the first housing 130. In this case, when the first housing 130 rotates, the first housing 130 may move relative to the body part 110 by the bearing part 191. In addition, the sealing unit 192 disposed between the body unit 110 and the first housing 130 may have external air, moisture, or the like when the first housing 130 is rotated, such as the first housing 130 and the body unit 110. It can be prevented from entering.

When the first housing 130 rotates, the second housing 140 may also rotate together with the first housing 130. When the second housing 140 rotates, outside air may enter a gap between the first housing 130 and the second housing 140. In this case, the first blade 150 may flow the outside air between the first housing 130 and the second housing 140, and the outside air may be discharged to the outside through the passage hole 141.

The flow of external air as described above may quickly discharge heat generated from the outer surface of the first housing 130 to the outside. That is, the outside air generated in the space between the first housing 130 and the second housing 140 may lower the temperature of the first housing 130 through heat exchange with the outer surface of the first housing 130. In addition, the temperature inside the first housing 130 may be lowered due to the temperature drop of the first housing 130.

Therefore, the rotor 100 may effectively discharge heat generated inside the first housing 130 to the outside during operation. In addition, the rotating body 100 may maintain the temperature of the first housing 130 at an appropriate level, thereby preventing malfunction of the devices inside the first housing 130.

Referring to FIG. 5, the rotor 200 includes a body 210, a driver 220, a first housing 230, a second housing 240, a first blade 250, and a second blade 251. The sensor unit 261 may include a laser generator 270 and a controller 290.

In this case, the body unit 210, the driving unit 220, the first housing 230, the second housing 240, the first blade 250, the sensor unit 261, the laser generation unit 270, and the control unit 290. ) Are the same as or similar to those described with reference to FIGS. 1 to 4, and thus a detailed description thereof will be omitted.

In addition, the rotating body 200 may include a guide part 233, a transmission window 234, a lens part 262, a sealing part 291, and a bearing part 292. In this case, the guide portion 233, the transmission window 234, the lens portion 262, the sealing portion 291 and the bearing portion 292 are the same or similar to those described in Figures 1 to 4, respectively, detailed description thereof will be omitted Let's do it.

The second blade 251 may be exposed to the outside from the space between the first housing 230 and the second housing 240. In detail, the second blade 251 may be provided in at least one of the first housing 230 and the second housing 240. However, hereinafter, the second blade 251 will be described in detail with reference to the case provided in the second housing 240 for convenience of description.

The second blade 251 may be formed on the inner surface of the second housing 240. In this case, the second blade 251 may be exposed to the outside from the space between the second housing 240 and the first housing 230. That is, the second blade 251 may be formed at the lower end of the second housing 240 to be exposed to the outside from the lower end of the second housing 240.

The second blade 251 may be formed similarly to the first blade 250. For example, the second blade 251 may be formed in a straight shape, a curved shape or a spiral shape. In addition, the second blade 251 may be formed to be inclined.

Meanwhile, referring to the operation of the rotating body 200 as described above, the rotating body 200 emits the laser to the outside through the laser generating unit 270 and then detects the laser reflected from the external object in the sensor unit 261. To generate data.

In this case, the driving unit 220 may operate to rotate the first housing 230, and the second housing 240 may rotate together with the first housing 230. When the second housing 240 is rotated, the second blade 251 is rotated so that outside air is guided along the outer surface of the second blade 251 to the space between the first housing 230 and the second housing 240. I can move it.

The outside air moving as described above may flow in the space between the first housing 230 and the second housing 240 through the first blade 250. At this time, the temperature of the first housing 230 may be lowered by heat exchange between the first housing 230 and the outside air. In addition, the guide part 233 may maintain a constant distance between the first housing 230 and the second housing 240.

Due to heat exchange between the first housing 230 and the outside air, the temperature inside the first housing 230 may be rapidly lowered.

Therefore, the rotor 200 may effectively discharge heat generated inside the first housing 230 to the outside during operation. In addition, the rotor 200 may maintain the temperature of the first housing 230 at an appropriate level, thereby preventing malfunction of the devices inside the first housing 230.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will include such modifications and variations as long as they fall within the spirit of the invention.

According to an embodiment of the present invention, by providing a rotating body to prevent the internal temperature rises during rotation, there is disposed an electronic product that generates heat therein, such as a surveillance camera, a lidar, radar, etc. performing a rotational movement Embodiments of the invention can be applied.

Claims

A drive unit;

A first housing rotatably connected to the driving unit; And

And a second housing coupled to the first housing, the second housing being disposed to be spaced apart from an outside portion of the first housing.

At least one of the first housing and the second housing, the rotating body comprising a; first blade protruding from the surface.
The method of claim 1,

The first blade is a rotating body disposed inclined.
The method of claim 1,

The first blade is a rotating body formed in a curve.
The method of claim 1,

The first blade has a cross section of the airfoil shape.
The method of claim 1,

The first blade may be provided in plurality,

The plurality of first blades are disposed to be spaced apart from each other.
The method of claim 1,

A height of the first blade is equal to a distance between the first housing and the second housing.
The method of claim 1,

The height of the first blade is formed differently along the longitudinal direction of the first blade.
The method of claim 1,

The first blade has a lower portion than the other portion of the first contact with the outside air around the rotation direction of the first housing.
The method of claim 1,

At least one of the first housing and the second housing,

And a second blade for guiding outside air between the first housing and the second housing.
The method of claim 1,

The second housing is a rotating body formed with a through-hole connecting the outside and the space between the first housing and the second housing.
The method of claim 1,

An outer surface of the first housing is anodized (rotary body).
The method of claim 1,

The first blade is provided in plurality,

And the plurality of blades are arranged to form a spiral in the height direction of the first housing.