CN214476927U - Wireless power transmission structure and laser radar with same - Google Patents

Abstract

The utility model discloses a wireless power transmission structure and have this laser radar. According to the utility model discloses a wireless power transmission structure of an embodiment includes: a frame portion including a winding portion, a loop portion, a support portion, and a connection bridge, the winding portion protruding upward with respect to the loop portion and formed in a loop shape, a coil being wound around the winding portion, the winding portion being connected to the loop portion outside the winding portion through the connection bridge, the support portion supporting the loop portion being formed at both sides of the loop portion; a magnetic core portion including a cylindrical central portion having a through hole formed at a center thereof and a plurality of outer walls formed outside the central portion and spaced apart from the central portion; the plurality of outer walls are spaced apart from each other by a predetermined distance, and the core portion is inserted into the frame portion from below.

Description

Wireless power transmission structure and laser radar with same

Technical Field

The utility model relates to a laser radar especially relates to a laser radar's of rotation type wireless power transmission structure.

Background

In the field of autonomous driving, autonomous vehicles may detect surrounding objects by means of a device such as a laser radar (LIDAR). The lidar may obtain related information such as a distance, a speed, and the like about the surrounding object by emitting a laser beam to the surrounding three-dimensional space as a detection signal, and causing the laser beam to be reflected as an echo signal and return after being irradiated to the object in the surrounding space, and comparing the received echo signal with the emitted detection signal.

The laser radar as described above comprises a transmitting module and a receiving module. The emitting module generates and emits laser beams, and the laser beams which are irradiated on surrounding objects and reflected back are received by the receiving module. Since the speed of light is known, the distance of surrounding objects relative to the lidar can be measured by the propagation time of the laser.

The laser radar includes a rotary type laser radar capable of emitting laser light to a 360 ° horizontal angle range. In the laser radar of the rotary type, a transmission module and a reception module are provided in a rotary portion that rotates relative to a base (fixed portion). Therefore, data and power need to be transmitted between the laser radar base (stationary part) and the rotating part. Accordingly, it is desirable to provide a structure that facilitates the transmission of power and signals between the rotating portion and the stationary portion.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wireless power transmission structure and have this lidar convenient to installation.

According to the utility model discloses a wireless power transmission structure of an embodiment includes: a frame portion including a winding portion, a loop portion, a support portion, and a connection bridge, the winding portion protruding upward with respect to the loop portion and formed in a loop shape, a coil being wound around the winding portion, the winding portion being connected to the loop portion outside the winding portion through the connection bridge, the support portion supporting the loop portion being formed at both sides of the loop portion; and a core part including a center part formed in a cylindrical shape and having a through hole formed at a center thereof, and a plurality of outer walls formed outside the center part and spaced apart from the center part at predetermined intervals, the core part being inserted into the frame part from below, wherein the center part of the core part is inserted into the inside of the winding part of the frame part, the plurality of outer walls of the core part are inserted into a space between the winding part and the annular part of the frame part, the winding part of the frame part is positioned between the center part and the outer walls of the core part, and the connection bridge of the frame part is inserted into a space between the plurality of outer walls of the core part.

And, may further include: and a fixing part including a base part formed in a hollow shape and a plurality of arm parts formed outside the base part and extending upward, the arm parts having engaging parts to be engaged with the ring part.

A plurality of branch portions extending inward may be formed inside the base portion, and an upward protrusion may be formed at an inner end of each of the branch portions.

And the base portion is inserted between the plurality of support portions.

Further, when the core portion is inserted into the frame portion, upper surfaces of the winding portion, the center portion, and the outer wall may be flush.

And, the coil wound around the winding part may extend to the supporting part through a space spaced between the plurality of outer walls.

The support portion may be provided with a lead pin to which a coil wound around the winding portion is connected.

According to the utility model discloses a laser radar of another embodiment includes: a fixed part; the rotating part rotates relative to the fixed part, a first wireless power transmission structure is formed on one surface of the fixed part, a second wireless power transmission structure is formed on one surface of the rotating part, the first wireless power transmission structure and the second wireless power transmission structure are formed oppositely and separately, the first wireless power transmission structure and the second wireless power transmission structure are the wireless power transmission structures, a signal transmission piece is inserted into the through hole of the magnetic core part, and the signal transmission piece of the first wireless power transmission structure and the signal transmission piece of the second wireless power transmission structure are formed oppositely to transmit signals between the fixed part and the rotating part.

According to the utility model discloses a laser radar of another embodiment includes: a fixed part; the rotating part rotates relative to the fixed part, a first wireless power transmission structure is formed on one surface of the fixed part, a second wireless power transmission structure is formed on one surface of the rotating part, the first wireless power transmission structure and the second wireless power transmission structure are formed oppositely and separately, the first wireless power transmission structure and the second wireless power transmission structure are the wireless power transmission structures, a signal transmission piece is inserted into the through hole of the magnetic core part, the signal transmission piece of the first wireless power transmission structure and the signal transmission piece of the second wireless power transmission structure are formed oppositely to transmit signals between the fixed part and the rotating part, and the signal transmission piece is further located in the base part.

According to the utility model discloses a wireless power transmission structure can have following advantage: 1) the winding part protrudes from the frame part, so that the coil is easily wound on the winding part; 2) compact structure and easy assembly; 3) a space for arranging a signal transmission piece is reserved between the magnetic core part and the fixing part, so that the problems of power transmission and signal transmission can be solved at the same time.

The effects of the present invention are not limited to the above-described effects, and those skilled in the art can derive the effects not described above from the following description.

Drawings

Fig. 1 is a perspective view illustrating a wireless power transmission structure according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view illustrating a wireless power transmission structure according to an embodiment of the present invention.

Fig. 3 shows a perspective view and a plan view of a frame part according to an embodiment of the invention.

Fig. 4 shows a perspective view and a plan view of a magnetic core portion according to an embodiment of the present invention.

Fig. 5 shows a perspective view and a plan view of a fixing part according to an embodiment of the present invention.

Fig. 6 is a perspective view showing a joint frame portion and a core portion according to an embodiment of the present invention.

Description of the symbols

100: frame portion 200: magnetic core part

300: fixing part

Detailed Description

The technical solution of the embodiments of the present invention will be described in detail below with reference to the accompanying drawings of the embodiments of the present invention. It is to be understood that the following disclosure of the present invention is directed to only some embodiments, but not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step based on the following embodiments belong to the protection scope of the present invention.

Also, in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on the drawings, and are only for convenience of description of the simplified description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Next, a wireless power transmission structure according to an embodiment of the present invention will be described with reference to fig. 1 to 6. Fig. 1 is a perspective view illustrating a wireless power transmission structure according to an embodiment of the present invention. Fig. 2 is an exploded perspective view illustrating a wireless power transmission structure according to an embodiment of the present invention.

As shown in fig. 1 to 2, a wireless power transmission structure according to a first embodiment of the present invention includes a frame portion 100, a core portion 200, and a fixing portion 300. Further, the frame portion 100, the core portion 200, and the fixing portion 300 may be combined as shown in fig. 1 to form a wireless power transmission structure according to a first embodiment of the present invention. Specifically, a coil may be wound around the winding portion 110 of the yoke portion 100, and the core portion 200 may be inserted into an opening of the yoke portion 100 from below, so that the two outer walls 210 of the core portion 200 surround the winding portion 110. The fixing portion 300 may be engaged with the frame portion 100 from below to fix the core portion 200 between the frame portion 100 and the fixing portion 300. The wireless power transmission structure can be arranged on a fixed substrate and a rotating substrate of the laser radar, so that power is transmitted between the fixed substrate and the rotating substrate.

Next, each configuration of the wireless power transmission structure will be described in detail with reference to fig. 3 to 5.

As shown in fig. 3, the frame part 100 may include a winding part 110, a ring part 120, a support part 130, and a connection bridge 140. Wherein the winding part 110 may be formed at the center of the ring part 120 and connected with the ring part 120 by the connection bridge 140. The support portions 130 are formed in two and on both sides of the ring portion 120 to function to support the ring portion 120.

Among them, the wire winding part 110 may protrude upward from the frame part 100 and be formed in a ring shape in which an "Contraband" type structure rotates one rotation around spaced rotation axes, and an opening of a "Contraband" type is formed in a direction away from the rotation axis. Thus, a hollow area may be formed around the rotation axis of the winding part 110, and the coil may be wound in the opening of the "Contraband" type winding part 110. Wherein, the coil can be wound in the opening of the winding part 110 by an automatic winding manner. The winding portion 110 is preferably formed to have a size corresponding to a magnetic core portion 200 to be described later.

The annular portion 120 may be formed in a circular ring shape. The loop part 120 may be formed to have a diameter larger than the winding part 110 and be spaced apart from the outside of the bottom of the winding part 110. The connection between the loop part 120 and the winding part 110 may be formed by two connection bridges 140. Thus, two openings are formed in the area other than the connection bridge 140 between the winding portion 110 and the loop portion 120. The later-described magnetic core 200 is inserted into the frame portion 100 through the opening. The loop portion 120 is formed extending downward in the height direction from the bottom height of the wire winding portion 110.

The supporting portion 130 may be formed at both sides of the loop portion 120 and extend downward of the loop portion 120, and the bottom of the supporting portion 130 may contact a substrate for mounting the wireless power transmission structure, so that the supporting portion 130 may function to support the loop portion 120 and the winding portion 110. The support portion 130 and the connecting bridge 140 are preferably formed in two, but may be formed in more numbers. A plurality of pins may be formed at a position near the bottom of the outer side of the supporting part 130, and the coil wound around the winding part 110 may be electrically connected to the substrate through the pins.

As shown in fig. 4, the core portion 200 may be formed in a circular ring shape, and may be formed in a circular ring shape having an annular groove. The magnetic core 200 may be used to transmit power. Specifically, ferrite such as manganese-zinc ferrite (Mn-Zn) can be used.

A through hole 220 may be formed at the center of the loop shape of the core portion 200. The diameter of the through hole 220 is preferably formed so that a signal transmission member, which will be described later, can be inserted into the through hole 220, and is preferably larger than the diameter of the signal transmission member. A hollow cylindrical center portion 210 is formed outside the through hole 220. The center portion 210 may be inserted into a hollow region in the center of the winding portion 110 of the frame portion 100. Two outer walls 230 are formed in the outer region of the core portion 200 so as to be spaced apart from the center portion 210. The two outer walls 230 may be symmetrically formed around the outside of the core portion 200 with two spaced areas formed between the two outer walls 230. When the core part 200 is inserted into the frame part 100, the two outer walls 230 are inserted into the opening formed in the frame part 100, and the connection bridges 140 of the frame part 100 are inserted into the spaced areas between the outer walls 230 of the core part 200, so that the center part 210 and the two outer walls 230 can surround the winding part 110 of the frame part 100. Wherein the number of outer walls is not limited to two, and a greater number of outer walls may be formed. Also, the heights of the center portion 210 and the outer wall 230 may be formed to coincide with the height of the winding portion 110 when the magnetic core portion 200 is inserted into the frame portion 100. Accordingly, the upper surfaces of the combined core portion 200 and frame portion 100 (including the upper surfaces of the winding portion 110, the central portion 210, and the outer wall 230) may form a relatively flat surface. Further, the coil wound around the winding part 110 may be drawn out from a space on the connection bridge 140 between the two outer walls 230 to be fixed to the pins of the supporting part 130.

Here, when the core portion 200 is inserted into the frame portion 100, the bottom surface of the core portion 200 is preferably flush with the bottom surface of the ring portion 120, or the bottom surface of the core portion 200 may be located at a higher position than the bottom surface of the ring portion 120.

Further, as shown in fig. 4, a groove recessed into the interior of the core portion 200 may be formed at a position close to the spaced area at the bottom of the core portion 200, and a protrusion corresponding to the groove may be formed below the connection bridge 140 of the frame portion 100, whereby the rotation of the core portion 200 with respect to the frame portion 100 may be further prevented.

The fixing part 300 may be used to fix the frame part 100 and the core part 200. As shown in fig. 5, the fixing portion 300 may include a base portion 310 and two arm portions 320.

The base portion 310 is formed to have a size close to the annular portion 120 and a hollow shape. A plurality of branch portions 311 extending inward may be formed inside the base portion 310, and an upward protrusion for supporting the core portion 200 may be formed at an inner end of each branch portion 311. Each of the branch portions 311 preferably has a predetermined elasticity to better support the core portion 200. In the embodiment of fig. 2, a case where the seating part 310 is formed with four branches 311 is shown, and the number of branches 311 may not be limited thereto. Also, the thickness of the seating portion 310 is preferably formed to be less than or equal to the distance that the support portion 130 protrudes from the lower surface of the ring portion 120. Thus, the pins of the supporting portion 130 are facilitated to be fixed to the substrate. Also, two or more positioning pins protruding downward are preferably formed below the base part 310, and the positioning pins may be used to assist the mounting and positioning of the wireless power transmission structure on the substrate.

Two arm portions 320 extending upward are formed on both sides of the outer side of the base portion 310. An engaging portion 321 protruding inward from the arm portion 320 is formed near the upper end of the arm portion 320. The spacing between the two arms 320 may match the shape and size of the ring portion 120. Therefore, when the base portion 310 is pushed in from below, the ring portion 120 can be inserted between the two arm portions 320, and the engaging portion 321 is engaged with the upper surface of the ring portion 120.

Further, when the engaging portion 321 is engaged with the annular portion 120, the protrusion of the branch portion 311 formed on the base portion 310 may abut against the bottom surface of the core portion 200 to prevent the core portion 200 from being separated downward. The top surface of the bottom of the core portion 200 abuts against the bottom surfaces of the winding portion 110 and the connecting bridge 140, thereby preventing the core portion 200 from being separated from the upper side.

With the above-described structure, the frame portion 100, the magnetic core portion 200, and the fixing portion 300 can be integrated.

Hereinafter, a method of assembling the wireless power transmission structure of the present invention will be described.

First, the coil is wound around the winding portion 110 of the frame portion 100. Then, the end of the coil is led out from the winding portion 110 along the connection bridge 140 of the frame portion 100, and then the end of the coil is fixed to the lead pin of the support portion 130 by fixing means such as welding.

Next, the magnetic core 200 may be inserted into the frame portion 100 from below. At this time, the outer wall 230 of the core portion 200 may protrude from the opening between the winding portion 110 and the loop portion 120, and the central portion 210 of the core portion 200 may be inserted into the hollow region of the winding portion 110. Thereby forming the structure shown in fig. 6. That is, the upper surfaces of the center portion 210 and the outer wall 230 of the core portion 200 may be flush with the upper surface of the winding portion 110. The bottom surface of the core portion 200 may be flush with the bottom surface of the ring portion 120. Also, the coil wound around the winding portion 110 may be drawn out from an area between the two outer walls 230 of the core portion 200 to extend to the lead pins.

Next, fixing portion 300 is pushed in from below core portion 200 and frame portion 100. The shape of the base portion 310 of the fixing portion 300 is preferably matched to the shape of the support portion 130 of the frame portion 100. That is, the fixing portion 300 may be inserted between the two supporting portions 130 under the frame portion 100. Further, the engaging portions 321 on the upper portions of the two arm portions 320 of the fixing portion 300 may be engaged with the upper surface of the ring portion 120; the projections of the respective branch portions 311 of the fixing portion 300 may abut on the bottom surface of the core portion 200.

The position of the magnetic core 200 can be fixed between the frame portion 100 and the fixing portion 300. Also, the wireless power transmission structure may be fixed to the substrate through the pins of the frame part 100.

Among them, the frame portion 100 and the fixing portion 300 are preferably formed of a material that does not affect transmission of an electromagnetic field.

In the above-described embodiment, the case where the wireless power transmission structure includes the frame portion 100, the core portion 200, and the fixing portion 300 is described. However, the present invention is not limited thereto, and the fixing portion 300 may be omitted. Specifically, after the core portion 200 is inserted into the frame portion 100, the core portion 200 and the frame portion 100 are fixed by an adhesive, and the core portion 200 can be prevented from being detached downward from the frame portion 100.

In the above-described embodiment, the case where the connecting bridge 140, the outer wall 230, and the arm portion 320 are formed in two has been described, but the present invention is not limited thereto, and the number of the above-described components may be appropriately selected by those skilled in the art.

Next, a laser radar having the wireless power transmission structure as described above will be described.

According to the utility model discloses a laser radar of an embodiment can be the laser radar of rotation type. And may include a rotating part and a fixing part, and the transmitting module and the receiving module of the laser radar may be provided in the rotating part. Among them, it is necessary to transmit power from the fixed portion to the transmission module and the reception module of the rotating portion, and it is necessary to transmit a control signal to the transmission module and receive a reception signal from the reception module. According to the utility model discloses a wireless power transmission structure of an embodiment can be used for transmitting electric power and signal between fixed part and rotating part.

According to the utility model discloses a wireless power transmission structure of an embodiment can form two and set up in rotating part and fixed part in opposite directions. That is, the first wireless power transmission structure may be provided on the upper surface of the fixing portion located at the lower side and formed as shown in fig. 1; the second wireless power transmission structure may be provided on a lower surface of the rotation part located on the upper side and formed in a form of upside down in fig. 1. Also, a predetermined distance is preferably spaced between the first wireless power transmission structure and the second wireless power transmission structure, and the spaced distance may be appropriately selected by those skilled in the art. Wherein the rotating portion may be rotatably provided on the fixed portion by a bearing, not shown. The wireless power transmission structure located in the rotating portion may rotate relative to each other with the central axis of the two wireless power transmission structures as a rotation center.

Thus, between two wireless power transmission structures facing up and down, power may be transmitted from the fixed part to the rotating part through an electromagnetic field formed by the coil wound around the wire winding part 110. Among them, the two core portions 200 facing up and down can prevent the electromagnetic field from leaking out and improve the efficiency of wireless power transmission. Also, the heights of the upper surfaces of the combined wire winding part 110, the center part 210, and the outer wall 230 may be leveled to prevent friction from being generated with the wireless power transmission structure positioned at the upper/lower sides at the time of relative rotation.

With the above configuration, power can be transmitted in a manner of the fixed substrate of the fixed part-the coil of the first wireless power transmission structure-the rotating substrate of the coil-rotating part of the second wireless power transmission structure. Thereby, wireless power transmission between the rotating portion and the stationary portion can be achieved.

According to the utility model discloses an embodiment, can also be provided with signal transmission spare between wireless power transmission structure and base plate. That is, the signal transmission member may be provided in a space formed by the hollow region of the base portion 310 and the through hole 220 of the core portion 200, or may be inserted into the through hole 220 of the core portion 200. The transmitter and the receiver of the signal transmission member may be disposed on the stationary portion and the rotating portion in a vertically opposite manner, so that a signal is transmitted between the stationary portion and the rotating portion.

The embodiments described above with respect to the apparatus and method are merely illustrative, where separate units described may or may not be physically separate, and the components shown as units may or may not be physical units, i.e. may be located in one location, or may be distributed over a plurality of network units. The technical scheme of the utility model can be realized by selecting some or all modules according to the actual needs.

Claims (9)

1. A wireless power transfer structure, comprising:

a frame portion including a winding portion, a loop portion, a support portion, and a connection bridge, the winding portion protruding upward with respect to the loop portion and formed in a loop shape, a coil being wound around the winding portion, the winding portion being connected to the loop portion outside the winding portion through the connection bridge, the support portion supporting the loop portion being formed at both sides of the loop portion;

a core part including a cylindrical central part having a through hole formed at the center thereof and a plurality of outer walls formed outside the central part and spaced apart from the central part by a predetermined distance,

the core part is inserted into the frame part from below, wherein a center portion of the core part is inserted into an inside of the winding part of the frame part, the outer walls of the core part are inserted into a space between the winding part and the ring part of the frame part, the winding part of the frame part is located between the center portion and the outer walls of the core part, and the connection bridge of the frame part is inserted into a space between the outer walls of the core part.

2. The wireless power transfer structure of claim 1, further comprising:

and a fixing part including a base part formed in a hollow shape and a plurality of arm parts formed outside the base part and extending upward, the arm parts having engaging parts to be engaged with the ring part.

3. The wireless power transfer structure of claim 2,

a plurality of branch parts extending inwards are formed on the inner side of the base part,

an upward protrusion is formed at an inner end of each of the branch portions.

4. The wireless power transfer structure of claim 2,

the base portion is interposed between the plurality of support portions.

5. The wireless power transfer structure of claim 1,

when the core portion is inserted into the frame portion, upper surfaces of the winding portion, the center portion, and the outer wall are flush.

6. The wireless power transfer structure of claim 1,

the coil wound around the winding portion extends to a supporting portion through spaces spaced between the plurality of outer walls.

7. The wireless power transfer structure of claim 6,

the supporting part is provided with a pin, and the coil wound on the winding part is connected with the pin.

8. A lidar, comprising:

a fixed part;

a rotating part rotating relative to the fixed part,

a first wireless power transmission structure formed on a surface of the fixing portion, a second wireless power transmission structure formed on a surface of the rotating portion, the first and second wireless power transmission structures being formed to be opposite and spaced apart from each other,

the first and second wireless power transmission structures being the wireless power transmission structure of any one of claims 1-7,

a signal transmission member is inserted into the through hole of the core portion, and the signal transmission member of the first wireless power transmission structure and the signal transmission member of the second wireless power transmission structure are formed to face each other to transmit a signal between the fixed portion and the rotating portion.

9. A lidar, comprising:

a fixed part;

a rotating part rotating relative to the fixed part,

a first wireless power transmission structure formed on a surface of the fixing portion, a second wireless power transmission structure formed on a surface of the rotating portion, the first and second wireless power transmission structures being formed to be opposite and spaced apart from each other,

the first and second wireless power transfer structures are the wireless power transfer structure of claim 2,

a signal transmission member is inserted into the through hole of the core portion, the signal transmission member of the first wireless power transmission structure and the signal transmission member of the second wireless power transmission structure are formed to face each other to transmit a signal between the stationary portion and the rotating portion,

the signal transmission member is also located in the base portion.

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