CN111522009A

CN111522009A - Radar structure

Info

Publication number: CN111522009A
Application number: CN202010258048.8A
Authority: CN
Inventors: 赵一
Original assignee: Ningbo Ruiyan Electronic Technology Co ltd
Current assignee: Ningbo Ruiyan Electronic Technology Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-08-11

Abstract

The invention relates to a radar structure, which comprises a shell, a first circuit structure, a connecting piece and a second circuit structure, wherein the first circuit structure, the connecting piece and the second circuit structure are arranged in the shell along the thickness direction of the shell; the shell comprises a base and a cover body, wherein the base and the cover body are used for clamping a first circuit structure, a connecting piece and a second circuit structure, a mounting groove is formed in the base, the first circuit structure is arranged in the mounting groove, and the first circuit structure is limited through the mounting groove; the front side and the back side of the connecting piece are respectively provided with a first limiting pin and a second limiting pin; the first circuit structure is provided with a first limiting hole which is connected with the first limiting pin in an inserting mode so as to limit, and the second circuit structure is provided with a second limiting hole which is connected with the second limiting pin in an inserting mode so as to limit.

Description

Radar structure

Technical Field

The invention relates to the technical field of sensors, in particular to a radar structure.

Background

With the development of automobile technology, functions of automobile collision prevention, automatic parking, pedestrian detection and the like need to be supported by radar technology, and an automobile radar is installed on an automobile and can quickly sense information such as distance, speed, azimuth angle and the like of objects in the range around the automobile, so that a key effect is played on safe driving of the automobile. The structural design of the automobile radar needs to meet the requirements of weight, volume, environmental adaptability, integrity, cost ratio and the like in many aspects, needs to be considered comprehensively and carefully, and particularly needs to meet the requirements of simplicity, practicability and durability in the aspect of structure.

In the conventional technology, the automobile radar comprises a shell and an internal circuit structure, wherein the internal circuit structure is usually locked on the shell through screws and the like, and the circuit structure is easily abraded or damaged due to the fact that the circuit structure and the screws and the like have large connecting stress at the connecting positions, particularly long-time vibration during automobile operation, and the connection between the circuit structure and the screws can also be loosened.

Disclosure of Invention

In view of the above, it is necessary to provide a radar structure for solving the above technical problems.

A radar structure comprises a shell, a first circuit structure, a connecting piece and a second circuit structure, wherein the first circuit structure, the connecting piece and the second circuit structure are arranged in the shell along the thickness direction of the shell;

the shell comprises a base and a cover body, wherein the base and the cover body are used for clamping a first circuit structure, a connecting piece and a second circuit structure, a mounting groove is formed in the base, the first circuit structure is arranged in the mounting groove, and the first circuit structure is limited through the mounting groove;

the front side and the back side of the connecting piece are respectively provided with a first limiting pin and a second limiting pin;

the first circuit structure is provided with a first limiting hole which is connected with the first limiting pin in an inserting mode so as to limit, and the second circuit structure is provided with a second limiting hole which is connected with the second limiting pin in an inserting mode so as to limit.

In one embodiment, the inner side wall of the mounting groove and the outer side wall of the second circuit structure are attached to each other, so that the mounting groove and the second circuit structure are positioned in a profiling mode.

In one embodiment, there are two first limit pins, and the two first limit pins are respectively disposed at a pair of diagonal corners of the connecting member.

In one embodiment, there are two second limit pins, and the two second limit pins are respectively arranged at the other pair of corners of the connecting piece.

In one embodiment, the cover body is provided with a plurality of pressing parts arranged along a ring shape, so that the pressing parts are pressed on the first circuit structure after the cover body and the base are covered.

In one embodiment, the pressing member is an elastic pressing member.

In one embodiment, the pressing member is in a shape of a circular truncated cone.

In one embodiment, the cover body is provided with a flexible waterproof strip on a surface for being assembled with the base, the flexible waterproof strip is fixedly connected with the cover body, and after the base and the cover body are assembled, the base and the cover body are mutually extruded to enable the flexible waterproof strip to generate elastic deformation so as to seal the space in the housing.

In one embodiment, a sealing groove is formed in the base, and after the base and the cover body are closed, one end of the flexible waterproof strip extends into the sealing groove and is mutually extruded with the bottom of the sealing groove to form sealing.

In one embodiment, a sealing bulge is arranged on the side of the flexible waterproof strip, and after the base and the cover body are closed, the sealing bulge and the side part of the sealing groove are mutually extruded to form sealing.

Has the advantages that: according to the radar structure, the first circuit structure, the connecting piece and the second circuit structure are connected into a whole and clamped by the base and the cover body, so that the first circuit structure, the connecting piece and the second circuit structure are firmly installed in the shell, and the first circuit structure, the connecting piece and the second circuit structure cannot move transversely by the limiting fit of the first limiting pin and the first limiting hole and the limiting fit of the second limiting pin and the second limiting hole; be provided with the mounting groove in the base, first circuit structure sets up in the mounting groove to carry on spacingly through the mounting groove to first circuit structure, consequently the relative base of first circuit structure can not take place horizontal drunkenness. According to the radar structure, the first circuit structure, the connecting piece and the second circuit structure are not connected through the connecting pieces such as the screws or the bolts, so that stress concentration cannot be formed at the connecting parts of the connecting pieces such as the screws or the bolts, abrasion of an automobile at the stress concentration position due to long-time vibration is prevented, or threaded connection looseness caused by long-time vibration of the automobile is prevented.

Drawings

FIG. 1 shows an exploded view from a first perspective of a radar structure in an embodiment of the invention;

FIG. 2 shows an exploded view of a second perspective of a radar structure in an embodiment of the invention;

FIG. 3 shows a top view of a radar structure in one embodiment of the invention;

fig. 4 is a cross-sectional view of the radar structure of fig. 3 taken along the direction a-a.

Reference numerals: 100. a cover body; 110. a flexible waterproof strip; 110A, sealing the bulge; 110B, a tip; 110C, an inclined surface; 110D, reinforcing ribs; 120. a pressing member; 130. a fusion zone; 200. a first circuit structure; 210. a first limit hole; 300. a connecting member; 310. a first limit pin; 320. a second limit pin; 330. a concave groove; 400. a second circuit structure; 410. a second limiting hole; 420. an outer sidewall; 500. a base; 500A, a sealing groove; 500B, a first groove wall; 500C, a second groove wall; 500D, a side portion; 500E, bottom; 510. an accommodating cavity; 520. a screw; 530. a support table; 540. mounting grooves; 550. an inner side wall.

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.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed 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. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, fig. 1 shows an exploded view of a radar structure in an embodiment of the invention from a first perspective, and fig. 2 shows an exploded view of a radar structure in an embodiment of the invention from a second perspective.

The radar structure provided by the embodiment of the invention can be used in the field of automobiles, and is installed on an automobile so as to quickly sense information such as distance, speed, azimuth angle and the like of objects in the range around the automobile.

The radar structure includes a case and a first circuit structure 200, a connector 300, and a second circuit structure 400 provided in the case in a thickness direction of the case. The housing includes a base 500 and a cover 100, and the base 500 and the cover 100 are designed to be separable and can be locked by screws 520. Wherein the first circuit structure 200 and the second circuit structure 400 each comprise a circuit board including but not limited to a PCB board and a circuit disposed on the PCB board and an electronic component including but not limited to a chip and a radar antenna disposed on the circuit board.

A receiving cavity 510 is formed between the base 500 and the cover 100, the receiving cavity 510 is used for mounting an electronic component, and the electronic component may include the first circuit structure 200, the connector 300 and the second circuit structure 400, wherein the connector 300 is disposed between the first circuit structure 200 and the second circuit structure 400, and specifically, the first circuit structure 200, the connector 300 and the second circuit structure 400 are sequentially disposed along a thickness direction of the housing, i.e., a Z-axis direction in fig. 1.

In the view shown in fig. 1 and 2, the upper side of the connecting member 300 is the front side, and the lower side of the connecting member 300 is the reverse side. The front and back of the connector 300 are respectively provided with a first limit pin 310 and a second limit pin 320, the first circuit structure 200 is provided with a first limit hole 210 which is plugged with the first limit pin 310 for limiting, and the second circuit structure 400 is provided with a second limit hole 410 which is plugged with the second limit pin 320 for limiting. That is, the first circuit structure 200 and the second circuit structure 400 are respectively disposed on the front and back sides of the connector 300 and connected to the limiting hole through the limiting pin, rather than the connector 300 such as the screw 520 or the bolt, so that stress concentration is not formed at the connection position of the connector 300 such as the screw 520 or the bolt, and abrasion of the vehicle at the stress concentration position due to long-term vibration or loosening of the threaded connection due to long-term vibration of the vehicle is prevented.

As shown in fig. 1 and 2, the first circuit structure 200, the connecting member 300, and the second circuit structure 400 are integrally connected and clamped by the base 500 and the cover 100, so that the first circuit structure 200, the connecting member 300, and the second circuit structure 400 are firmly installed in the housing and are prevented from moving laterally with each other by the spacing fit of the first spacing pin 310 and the first spacing hole 210 and the spacing fit of the second spacing pin 320 and the second spacing hole 410, and the "lateral" refers to a horizontal direction shown in fig. 1 or 2.

As shown in fig. 1, a mounting groove 540 is formed in the base 500, the first circuit structure 200 is disposed in the mounting groove 540, and the first circuit structure 200 is limited by the mounting groove 540, so that the first circuit structure 200 does not move laterally relative to the base 500, and the "lateral direction" refers to the horizontal direction shown in fig. 1. In the above embodiment, the first limiting pin 310 is in limiting fit with the first limiting hole 210, and the second limiting pin 320 is in limiting fit with the second limiting hole 410, so that the first circuit structure 200, the connecting member 300 and the second circuit structure 400 do not move transversely with each other, and therefore the first circuit structure 200, the connecting member 300 and the second circuit structure 400 do not move transversely with each other in the housing. When the first circuit structure 200, the connector 300 and the second circuit structure 400 are clamped by the base 500 and the cover 100, the first circuit structure 200, the connector 300 and the second circuit structure 400 are limited in the housing as a whole, i.e., the degrees of freedom in the X-axis, Y-axis and Z-axis directions are all limited. The X axis and the Y axis are respectively the length direction and the width direction of the radar structure, and the Z axis is the thickness direction of the radar structure.

As shown in fig. 1, the base 500 is provided with a mounting groove 540, and the mounting groove 540 is used for mounting the second circuit structure 400. After the second circuit structure 400 is mounted in the mounting groove 540, the inner sidewall 550 of the mounting groove 540 is attached to the outer sidewall 420 of the second circuit structure 400, so that the mounting groove 540 and the second circuit structure 400 form a profiling positioning. The profiling positioning means that the shape of the outer sidewall 420 of the second circuit structure 400 is the same as the shape of the inner sidewall 550 of the mounting groove 540, and after the second circuit structure 400 is inserted into the mounting groove 540 along the Z-axis direction, the second circuit structure 400 cannot move along the X-axis direction nor the Z-axis direction by the profiling positioning. Further, the cross section of the second circuit structure 400 is substantially square, the direction is rectangular or square, and a corner of the square may be provided with a fillet or a chamfer; correspondingly, the cross section of the mounting groove 540 is also substantially square; therefore, when the second circuit structure 400 is mounted in the mounting groove 540, the second circuit structure 400 cannot rotate about the Z-axis direction with respect to the mounting groove 540. In other embodiments, the second circuit structure 400 cannot rotate about the Z-axis direction with respect to the mounting groove 540 when the second circuit structure 400 is mounted in the mounting groove 540 as long as the cross-sections of the second circuit structure 400 and the mounting groove 540 are not circular.

As shown in fig. 1, the supporting platform 530 is disposed at the bottom of the mounting groove 540, the supporting platform 530 is disposed continuously along the circumference of the base 500, and a clearance space is formed at the middle of the supporting platform 530, when the second circuit structure 400 is mounted in the mounting groove 540, the outer sidewall 420 of the second circuit structure 400 is supported on the inner sidewall 550 of the mounting groove 540, and the outer edge of the bottom of the second circuit structure 400 is supported on the supporting platform 530.

As shown in fig. 1, the cross section of the connecting member 300 is substantially square, and the substantially square is understood that the connecting member 300 includes at least two sides parallel to the Y-axis along the X-axis direction, and the connecting member 300 includes at least two sides parallel to the X-axis along the Y-axis direction, and the specific shape of the cross section is not limited to the concave groove 330 formed on one side.

With reference to fig. 1, the connecting member 300 is provided with two first limiting pins 310, and the two first limiting pins 310 are disposed along a set of opposite corners of the connecting member 300. The connection line between the two first limiting pins 310 is not strictly defined as a square diagonal line along the set of opposite corners of the connecting member 300, and the two first limiting pins 310 are arranged along the set of opposite corners of the connecting member 300, which means that, referring to fig. 3, fig. 3 is a top view of the radar structure in an embodiment, when the radar structure is viewed from the perspective shown in fig. 3, one of the first limiting pins 310 is located at the lower left corner of the connecting structure, and the other first limiting pin 310 is located at the upper right corner of the connecting structure; or one of the first limiting pins 310 is located at the upper left corner of the connecting structure, and the other first limiting pin 310 is located at the lower right corner of the connecting structure.

With reference to fig. 1, on the basis of the above embodiment, the connecting element 300 is provided with two second limiting pins 320, and the first limiting pin 310 and the second limiting pin 320 are respectively disposed on two opposite surfaces of the connecting element 300. Two second limiting pins 320 are arranged along another pair of corners of the connecting member 300, specifically, when the radar structure is viewed from the viewing angle shown in fig. 3, when the two first limiting pins 310 are respectively located at the lower left corner and the upper right corner of the connecting structure, the two second limiting pins 320 are respectively located at the upper left corner and the lower right corner of the connecting structure; when the two first limiting pins 310 are respectively located at the upper left corner and the lower right corner of the connecting structure, the two second limiting pins 320 are respectively located at the lower left corner and the upper right corner of the connecting structure. The staggered arrangement mode of the first limit pin 310 and the second limit pin 320 is adopted, namely, four corners of the connecting piece 300 are all subjected to connecting force, so that the stress of the connecting piece 300 is uniform. When both the first and second stopper pins 310 and 320 are arranged substantially on one diagonal line of the square-shaped link 300, both diagonal lines on the other diagonal line of the link 300 are easily warped due to not receiving a connecting force.

As shown in fig. 2, the pressing element 120 is disposed on the cover 100, and when the cover 100 and the base 500 are closed, the pressing element 120 presses against the first circuit structure 200. The plurality of pressing pieces 120 are arranged along the ring shape, and the plurality of pressing pieces 120 are pressed on the first circuit structure 200, so that the first circuit structure 200 is not warped and deformed; therefore, the first circuit structure 200, the connector 300, and the second circuit structure 400 sandwiched between the base 500 and the cover 100 are more securely mounted. Further, the pressing element 120 is made of an elastic material, and when the first circuit structure 200, the connecting element 300 and the second circuit structure 400 are clamped by the base 500 and the cover 100, the pressing element 120 can be elastically deformed to provide a pressing force for pressing the first circuit structure 200 toward the base 500, so that the first circuit structure 200, the connecting element 300 and the second circuit structure 400 are further installed more firmly and stably. Specifically, the pressing members 120 are cylindrical or truncated cone-shaped and are distributed along the ring shape. The pressing element 120 is made of an elastic material, specifically, the pressing element 120 at least includes a portion made of an elastic material, so that the pressing element 120 can be elastically deformed. For example, the pressing member 120 may be composed of two parts, including a base portion made of plastic material and an interference portion made of rubber material, the base portion and the interference portion are connected with each other, the base portion is fixed on the cover 100, and the interference portion is used for interfering with the first circuit structure 200. The first circuit structure 200, the connector 300, and the second circuit structure 400 are fixed by the pressing member 120, and also absorb shock; the pressing member 120 is always supported on the first circuit structure 200, so that friction is avoided and the circuit structure is protected. In addition, when the pressing member 120 is in a circular truncated cone shape, the diameter of the cross section of the base is larger than that of the cross section of the abutting portion, so that the strength of the base of the pressing member 120 is better, and the elasticity of the abutting portion is better.

Fig. 4 is a sectional view taken along a-a in fig. 3. As shown in fig. 4, a receiving cavity 510 is formed between the base 500 and the cover 100, the first circuit structure 200, the connector 300, and the second circuit structure 400 are sequentially disposed in the receiving cavity 510 along a thickness direction of the radar structure, i.e., a Z-axis direction, and the first circuit structure 200, the connector 300, and the second circuit structure 400 are clamped and fixed by the base 500 and the cover 100. The base 500 and the cover 100 are covered to form a receiving cavity 510, and the first circuit structure 200, the connecting member 300, the second circuit structure 400 and other internal components are installed in the receiving cavity 510. In order to increase the waterproof performance of the accommodating cavity 510, the cover 100 has a protruding flexible waterproof strip 110 on the surface for assembling with the base 500, the flexible waterproof strip 110 is fixedly connected with the cover 100, and after the base 500 and the cover 100 are assembled, the base 500 and the cover 100 are mutually squeezed to elastically deform the flexible waterproof strip 110, so as to seal the accommodating cavity 510.

In the above-mentioned radar structure, flexible waterproof strip 110 fixed mounting is on lid 100, and flexible waterproof strip 110 forms wholly with lid 100 fixed connection promptly, during base 500 and lid 100 during the assembly, need not assemble alone and be used for the waterproof circle of independent setting, and then can prevent to omit waterproof circle when assembling base 500 and lid 100. Cover 100 and base 500 assembly back can extrude flexible waterproof strip 110, and because flexible waterproof strip 110 and cover 100 fixed connection, increased the joint strength of flexible waterproof strip 110 with cover 100, prevented that flexible waterproof strip 110 from receiving the extrusion force and taking place the aversion, increase sealed reliability, and prevent that flexible waterproof strip 110 from receiving the extrusion force and taking place wearing and tearing.

Specifically, when the flexible waterproof strip 110 is fixedly connected to the cover 100 to form a whole, the flexible waterproof strip 110 may be fixedly connected to the cover 100 by glue. In one embodiment, to further improve the connection between flexible flashing strip 110 and cover 100, flexible flashing strip 110 and cover 100 are connected by injection molding. For example, the flexible waterproof strip 110 is made of rubber material, the cover body 100 is made of plastic material, and the cover body 100 may be first injection-molded by an injection molding machine, and then the flexible waterproof strip 110 may be directly injection-molded on the cover body 100 by the injection molding machine. In this manner, the flexible flashing 110 and the cover 100 are integrally formed and fused to each other at the interconnection, as shown in fig. 4, the fusion of the flexible flashing 110 and the cover 100 forms a fusion band 130, thereby improving the connection strength.

In order to improve the sealing and waterproof effects, as shown in fig. 4, a sealing groove 500A is provided on the base 500, and after the base 500 and the cover body 100 are closed, one end of the flexible waterproof strip 110 extends into the sealing groove 500A and is mutually extruded with the bottom 500E of the sealing groove 500A to form a seal. As shown in fig. 2, the flexible waterproof strip 110 is arranged in a full circle, as shown in fig. 1, the sealing groove 500A is also arranged in a full circle, and after the flexible waterproof strip 110 is matched with the sealing groove 500A, waterproof sealing is realized on the full circle, so that waterproof and sealing effects are improved.

As shown in fig. 4, since flexible flashing 110 is provided in a complete circle, i.e. enclosing an inner circle, flexible flashing 110 is referred to as inner side on the side of the inner circle and outer side on the side of the outer circle. The outer side of the flexible flashing strip 110 is provided with a sealing protrusion 110A, which sealing protrusion 110A extends along the flexible flashing strip 110 and is arranged in a complete circle. When the base 500 and the cover 100 are closed, the sealing protrusion 110A and the side 500D of the sealing groove 500A are pressed against each other to form a seal, thereby improving the sealing effect.

As shown in fig. 4, the sealing groove 500A includes a first groove wall 500B and a second groove wall 500C, since the sealing groove 500A is disposed in a complete circle, i.e., an inner circle is enclosed, the sealing groove 500A is called an inner side on the inner circle side and an outer side on the outer circle side, the first groove wall 500B is on the inner side of the sealing groove 500A, the second groove wall 500C is on the outer side of the sealing groove 500A, and the height of the first groove wall 500B is smaller than that of the second groove wall 500C. The flexible flashing 110 includes an inclined surface 110C that presses against the first channel wall 500B to form a seal.

That is, flexible flashing strip 110 forms a seal with sealing channel 500A. As shown in fig. 4, the sealing protrusion 110A and the side 500D of the sealing groove 500A are pressed against each other to form a one-point sealing structure. One end of flexible waterproof strip 110 extends into sealing groove 500A and is pressed against bottom 500E of sealing groove 500A to form a sealing structure, in this embodiment, the end of flexible waterproof strip 110 extending into sealing groove 500A is tip 110B, and tip 110B is pressed against bottom 500E of sealing groove 500A. The inclined surface 110C of the flexible waterproof strip 110 and the first groove wall 500B are pressed against each other to form a sealing structure. In some embodiments, the seal formed by flexible flashing strip 110 and sealing slot 500A includes at least one of the three seal configurations described above. Through the cooperation of many seal structure, sealed and water-proof effects have effectually been guaranteed. In one embodiment, when the sealing structure includes the three points, the sealing protrusion 110A, the pointed end 110B and the inclined surface 110C of the flexible flashing strip 110 are arranged in sequence from outside to inside.

As shown in fig. 4, flexible flashing 110 further includes a reinforcing rib 110D connected to inclined surface 110C, that is, reinforcing rib 110D is disposed inside flexible flashing 110 and at the root of inclined surface 110C, and reinforcing rib 110D protrudes inward, so that the transverse thickness of flexible flashing 110 is increased, and the strength is increased.

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 radar structure, comprising a housing and a first circuit structure (200), a connector (300) and a second circuit structure (400) arranged within the housing in a thickness direction of the housing;

the shell comprises a base (500) and a cover body (100) which are used for clamping a first circuit structure (200), a connecting piece (300) and a second circuit structure (400), wherein a mounting groove (540) is formed in the base (500), the first circuit structure (200) is arranged in the mounting groove (540), and the first circuit structure (200) is limited through the mounting groove (540);

the front surface and the back surface of the connecting piece (300) are respectively provided with a first limiting pin (310) and a second limiting pin (320);

the first circuit structure (200) is provided with a first limiting hole (210) which is connected with the first limiting pin (310) in an inserting mode to limit, and the second circuit structure (400) is provided with a second limiting hole (410) which is connected with the second limiting pin (320) in an inserting mode to limit.

2. The radar structure of claim 1, wherein an inner side wall (550) of the mounting groove (540) and an outer side wall (420) of the second circuit structure (400) are attached to each other so that the mounting groove (540) and the second circuit structure (400) form a profiling positioning.

3. The radar structure of claim 1, wherein there are two first limit pins (310), and the two first limit pins (310) are respectively disposed at a set of opposite corners of the connecting member (300).

4. The radar structure of claim 3, wherein there are two second limit pins (320), and the two second limit pins (320) are respectively disposed at the other pair of corners of the connecting member (300).

5. The radar structure of claim 1, wherein the cover (100) is provided with a plurality of pressing members (120) arranged in a ring shape to press against the first circuit structure (200) after the cover (100) and the base (500) are closed.

6. Radar structure according to claim 5, characterised in that the press-on element (120) is a resilient press-on element (120).

7. Radar structure according to claim 5, characterised in that the press-on element (120) is frustoconical.

8. The radar structure of claim 1, wherein the cover (100) has a flexible waterproof strip (110) on a surface for being assembled with the base (500), the flexible waterproof strip (110) is fixedly connected with the cover (100), and after the base (500) and the cover (100) are assembled, the flexible waterproof strip (110) is elastically deformed by mutual pressing of the base (500) and the cover (100) so as to seal a space in the housing.

9. The radar structure of claim 8, wherein a sealing groove (500A) is formed in the base (500), and after the base (500) and the cover (100) are closed, one end of the flexible waterproof strip (110) extends into the sealing groove (500A) and is mutually pressed with a bottom (500E) of the sealing groove (500A) to form a seal.

10. The radar structure of claim 9, wherein a sealing protrusion (110A) is disposed on a side of the flexible waterproof strip (110), and after the base (500) and the cover (100) are closed, the sealing protrusion (110A) and a side (500D) of the sealing groove (500A) are pressed against each other to form a seal.