Vehicle-mounted ultrasonic radar and front cover thereof

Abstract

The embodiment of the utility model provides a vehicle-mounted ultrasonic radar and a front cover thereof, and the front cover comprises a limiting substrate of which the middle part is provided with a through hole for the extension of the detection end of an ultrasonic radar probe, and an outer annular side plate which is formed by bending the outer periphery of the limiting substrate to the inner side in a protruding manner, the position, away from the penetrating hole by a preset distance, of the inner side face of the limiting base plate protrudes and extends around the penetrating hole to form an inner annular side plate, and the parts, located on the inner side and the outer side of the inner annular side plate, of the inner side face of the limiting base plate and the tail end face of the inner annular side plate are polished and form laser welding butt joint faces. A plurality of limiting convex ribs evenly distributed in the circumferential direction of the outer annular side plate are further formed on the outer side wall of the inner annular side plate. The front cover provided by the utility model is relatively simple in structure, the production process can be simplified, and the front cover can be conveniently assembled and connected with the main shell of the vehicle-mounted ultrasonic radar through a laser welding process.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of vehicle-mounted radars, and particularly to a vehicle-mounted ultrasonic radar and its front cover. Background Art

[0002] At present, the existing vehicle-mounted ultrasonic radars generally include: a main housing having a hollow cavity and an opening at one end, an ultrasonic radar assembled in the hollow cavity of the main housing with its detection end extending out of the opening, and a front cover assembled at the opening of the main housing. The front cover and the main housing are connected in a snap-fit manner through a snap structure; in order to ensure correct positioning between the front cover and the main housing for snap fixation, generally, a positioning rib and a positioning hole are respectively provided on the front cover and the main housing, and the positioning rib and the positioning hole cooperate with each other to position the front cover and the main housing accurately for snap fixation.

[0003] However, the inventor found in the specific implementation that in the connection method of the snap structure between the front cover and the main housing, local extrusion occurs between adjacent parts during snap fit, resulting in uneven stress distribution inside the parts and causing deformation; moreover, during the snap fit process, the positions between the positioning rib and the corresponding positioning hole need to be adjusted first to ensure the correct positioning between the front cover and the main housing, resulting in relatively cumbersome production processes. Summary of the Utility Model

[0004] The technical problem to be solved by the embodiments of the present utility model is to provide a front cover of a vehicle-mounted ultrasonic radar with a relatively simple structure and convenient installation.

[0005] The technical problem to be further solved by the embodiments of the present utility model is to provide a vehicle-mounted ultrasonic radar with a relatively simple structure and convenient installation.

[0006] To solve the above technical problems, the embodiments of the present utility model adopt the following technical solutions: A front cover of a vehicle-mounted ultrasonic radar includes a limiting substrate with a perforation formed in the middle for the detection end of the ultrasonic radar to extend out, and an outer annular side plate bent and protruding inward from the outer peripheral edge of the limiting substrate. An inner annular side plate is formed to protrude around the perforation at a predetermined distance from the inner side surface of the limiting substrate. The parts of the inner side surface of the limiting substrate on both sides of the inner annular side plate and the end surface of the inner annular side plate are polished and constitute a laser welding docking surface. A plurality of limiting ribs evenly distributed in the circumferential direction of the outer annular side plate are also formed on the outer side wall of the inner annular side plate.

[0007] Further, the limiting ribs extend from the root of the outer annular side plate to the end surface.

[0008] Further, a chamfered slope is provided at one end of the limiting rib close to the end surface of the outer annular side plate.

[0009] Further, portions of the inner side surface of the limiting substrate that are respectively located on both the inner and outer sides of the inner annular side plate have different depths relative to the end surface of the inner annular side plate.

[0010] Further, the portion of the inner side surface of the limiting substrate that is located inside the inner annular side plate is closer to the end surface of the inner annular side plate than the portion that is located outside the inner annular side plate.

[0011] Further, the height by which the inner annular side plate protrudes relative to the limiting substrate is greater than the height by which the outer annular side plate protrudes relative to the limiting substrate.

[0012] On the other hand, to solve the above further technical problems, the embodiments of the present utility model further provide the following technical solution: A vehicle-mounted ultrasonic radar, comprising a main housing having a hollow cavity and an opening at one end, an ultrasonic radar assembled in the hollow cavity of the main housing and having a detection end extending out of the opening, and a front cover assembled at the opening of the main housing, wherein the front cover is the front cover of the vehicle-mounted ultrasonic radar according to any one of the above.

[0013] Further, at the peripheral edge of the opening of the main housing, there are formed:

[0014] An outer step surface and an inner step surface that are respectively butted against the end surfaces of the outer annular side plate and the inner annular side plate; and

[0015] Welding bosses that are respectively formed on the outer and inner sides of the inner step surface and are used for corresponding abutment with the laser welding butt surfaces on the outer and inner sides of the inner annular side plate on the front cover.

[0016] Further, the end surface of the inner annular side plate corresponds to and abuts against the inner step surface, and the press-fitting deformation amount between the two during laser welding is 0.2 ± 0.02 mm.

[0017] Adopting the above technical solution, the embodiment of the present utility model has at least the following beneficial effects: The front cover provided by the embodiment of the present utility model protrudes an inner annular side plate on the inner side surface of the limit substrate. The parts of the inner side surface of the limit substrate on both the inner and outer sides of the inner annular side plate and the end surface of the inner annular side plate serve as laser welding docking surfaces, so as to fix the front cover efficiently and conveniently. In addition, the laser welding docking surfaces are polished to make them smoother and flatter, ensuring the quality of laser welding. In addition, a plurality of limit ribs evenly distributed in the circumferential direction of the outer annular side plate are formed on the outer side wall of the inner annular side plate, so that when the front cover is assembled to the main housing, the limit ribs tightly abut against the main housing, and the stability of the relative fixation between the limit substrate and the main housing is good. Compared with the traditional front cover fixed by a snap structure, the front cover provided by the present utility model has a relatively simple structure, which is beneficial to quickly and effectively fix the ultrasonic radar probe, can simplify the production process, and is convenient to be assembled and connected with the main housing of the vehicle-mounted ultrasonic radar through the laser welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 FIG. is a perspective structural schematic diagram of a disassembled state of an alternative embodiment of the vehicle-mounted ultrasonic radar of the present utility model.

[0019] Figure 2 FIG. is a perspective structural schematic diagram of an assembled state of an alternative embodiment of the vehicle-mounted ultrasonic radar of the present utility model.

[0020] Figure 3 FIG. is a perspective structural schematic diagram of the front cover of an alternative embodiment of the vehicle-mounted ultrasonic radar of the present utility model.

[0021] Figure 4 FIG. is a cross-sectional structural schematic diagram of an alternative embodiment of the vehicle-mounted ultrasonic radar of the present utility model.

[0022] Figure 5 FIG. is a longitudinal-sectional structural schematic diagram of an alternative embodiment of the vehicle-mounted ultrasonic radar of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present utility model and are not intended to limit the present utility model. Moreover, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0024] As Figures 1-5As shown in the figure, an alternative embodiment of the present utility model provides a front cover 1 for an in-vehicle ultrasonic radar, which includes a limiting substrate 11 with a perforation 10 formed in the middle for the detection end 21 of the ultrasonic radar probe 2 to extend out, and an outer annular side plate 13 bent from the outer peripheral edge of the limiting substrate 11 and protruding inward. An inner annular side plate 15 is formed to protrude around the perforation 10 at a predetermined distance from the inner side surface of the limiting substrate 11. The parts of the inner side surface of the limiting substrate 11 on both the inner and outer sides of the inner annular side plate 15 and the end surface of the inner annular side plate 15 all constitute laser welding docking surfaces A, B, and C that have been polished. A plurality of limiting ribs 151 evenly distributed in the circumferential direction of the outer annular side plate 13 are also formed on the outer side wall of the inner annular side plate 15.

[0025] In the front cover 1 provided by the embodiment of the present utility model, the inner annular side plate 15 is protrudingly provided on the inner side surface of the limiting substrate 11. The parts of the inner side surface of the limiting substrate 11 on both the inner and outer sides of the inner annular side plate 15 and the end surface of the inner annular side plate 15 serve as the laser welding docking surfaces A, B, and C, so as to fix the front cover 1 efficiently and conveniently. Moreover, the laser welding docking surfaces A, B, and C are polished to make them smoother and flatter, ensuring the quality of laser welding. In addition, a plurality of limiting ribs 151 evenly distributed in the circumferential direction of the outer annular side plate 13 are formed on the outer side wall of the inner annular side plate 15. When the front cover 1 is assembled to the main housing 3, the limiting ribs 151 tightly abut against the main housing 3, and the stability of the relative fixation between the limiting substrate 11 and the main housing 3 is good. Compared with the traditional front cover 1 fixed by a snap structure, the front cover 1 provided by the present utility model has a relatively simple structure, which is beneficial to quickly and effectively fix the ultrasonic radar probe 2, can simplify the production process, and is convenient to be assembled and connected to the main housing 3 of the in-vehicle ultrasonic radar through the laser welding process.

[0026] In another alternative embodiment of the present utility model, as Figures 1-5 shown, the limiting rib 151 extends from the root of the outer annular side plate 13 to the end surface. In this embodiment, the limiting rib 151 extends from the root of the outer annular side plate 13 to the end surface, which is convenient for the structural processing and forming, and can tightly abut against the main housing 3 in the circumferential direction to effectively implement positioning.

[0027] In another alternative embodiment of the present utility model, as Figures 1-5 shown, a chamfer 1511 is provided at one end of the limiting rib 151 close to the end surface of the outer annular side plate 13. In this embodiment, a chamfer 1511 is further provided at one end close to the end surface of the outer annular side plate 13, which can facilitate the smooth positioning of the limiting rib 151 with the main housing 3.

[0028] In another alternative embodiment of the present utility model, asFigures 1-5 As shown, the parts of the inner side surface of the limit substrate 11 located on the inner and outer sides of the inner annular side plate 15 have different depths relative to the end surface of the inner annular side plate 15. In this embodiment, by designing the parts of the inner side surface of the limit substrate 11 located on the inner and outer sides of the inner annular side plate 15 (i.e., laser welding surfaces A and B) to have different depths relative to the end surface of the inner annular side plate 15 (i.e., laser welding surface C), the positioning accuracy of the front cover 1 can be improved, and the stability of the front cover 1 during the laser welding process and the weld seam tightness can be ensured.

[0029] In another alternative embodiment of the present utility model, as Figures 1-5 shown, the part of the inner side surface of the limit substrate 11 located inside the inner annular side plate 15 is closer to the end surface of the inner annular side plate 15 than the part located outside the inner annular side plate 15. In this embodiment, by setting the part of the inner side surface of the limit substrate 11 located inside the inner annular side plate 15 (i.e., laser welding surface B) to be closer to the end surface of the inner annular side plate 15 (i.e., laser welding surface C) than the part located outside the inner annular side plate 15 (i.e., laser welding surface A), the structural layout design can be effectively optimized, so that the part of the inner side surface of the limit substrate 11 located inside the inner annular side plate 15 can provide better support and improve the weld seam tightness.

[0030] In another alternative embodiment of the present utility model, as Figures 1-5 shown, the protruding height of the inner annular side plate 15 relative to the limit substrate 11 is greater than the protruding height of the outer annular side plate 13 relative to the limit substrate 11. In this embodiment, by setting the protruding height of the inner annular side plate 15 relative to the limit substrate 11 to be greater than the protruding height of the outer annular side plate 13 relative to the limit substrate 11, the inner annular side plate 15 close to the inner side of the front cover 1 can provide better support and improve the weld seam tightness.

[0031] On the other hand, as Figures 1-5 shown, an embodiment of the present utility model further provides an in-vehicle ultrasonic radar, including a main housing 3 having a hollow cavity and an opening at one end, an ultrasonic radar probe 2 assembled in the hollow cavity of the main housing 3 and having a detection end 21 extending out from the opening, and a front cover 1 assembled at the opening of the main housing 3, wherein the front cover 1 is the front cover 1 of the in-vehicle ultrasonic radar as described in any of the above embodiments.

[0032] By adopting the front cover 1 of the in-vehicle ultrasonic radar as described in any of the above embodiments in this embodiment, the structure is relatively simple, which is convenient to be assembled and connected with the main housing 3 through the laser welding process, and can quickly and effectively fix the ultrasonic radar probe 2, simplifying the production process of the in-vehicle ultrasonic radar.

[0033] In another alternative embodiment of the present utility model, as Figures 1-5 shown, at the opening periphery of the main housing 3, there are formed:

[0034] an outer step surface 31 and an inner step surface 32 respectively docked with the end faces of the outer annular side plate 13 and the inner annular side plate 15; and

[0035] welding bosses 33 respectively formed on the outer side and the inner side of the inner step surface 32 and used for correspondingly abutting against the laser welding butt surfaces A and B on the outer side and the inner side of the inner annular side plate 15 on the front cover 1.

[0036] In this embodiment, by respectively forming the outer step surface 31, the inner step surface 32 and the welding bosses 33 at the opening periphery of the main housing 3, the corresponding parts of the front cover 1 (the end faces of the outer annular side plate 13 and the inner annular side plate 15 (i.e., the laser welding surface C) and the laser welding butt surfaces A and B on the front cover 1) are mutually positioned, so as to perform high-precision laser welding on the front cover 1.

[0037] In another alternative embodiment of the present utility model, as Figures 1-5 shown, the end face of the inner annular side plate 15 correspondingly abuts against the inner step surface 32, and the press-fit deformation amount between the two during laser welding is 0.2 ± 0.02 mm. In this embodiment, by designing the end face of the inner annular side plate 15 to correspondingly abut against the inner step surface 32 and having a press-fit deformation amount of 0.2 ± 0.02 mm between the two during laser welding, the front cover 1 can be effectively positioned with the main housing 3 through the corresponding abutment of the inner annular side plate 15 and the inner step surface 32 before laser welding, and there will be no mutual position offset during subsequent laser welding. Moreover, during laser welding, there is an appropriate press-fit deformation amount between the inner annular side plate 15 and the inner step surface 32, which can make the front cover 1 and the main housing 3 combine more tightly and effectively ensure the weld quality.

[0038] The embodiments of the present utility model have been described above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present utility model, those of ordinary skill in the art can also make many variations without departing from the purpose of the present utility model and the scope protected by the claims. These all fall within the protection scope of the present utility model.

Claims

1. A front cover of a vehicle-mounted ultrasonic radar, comprising a limiting substrate with a perforated hole in the middle for the detection end of the ultrasonic radar probe to extend out, and an outer annular side plate formed by bending and convexly extending inward from the outer peripheral edge of the limiting substrate, characterized in that: An inner annular side plate is formed on the inner side surface of the limiting substrate and protrudes around the through hole at a predetermined distance from the through hole. The inner side surface of the limiting substrate is respectively located at the inner and outer sides of the inner annular side plate and the end surface of the inner annular side plate are polished to form a laser welding joint surface. The outer side wall of the inner annular side plate is also formed with a plurality of limiting ribs evenly distributed in the circumferential direction of the outer annular side plate.

2. The front cover of the vehicle-mounted ultrasonic radar according to claim 1, characterized in that: The limiting convex rib extends from the root of the outer annular side plate to the end surface.

3. The front cover of the vehicle-mounted ultrasonic radar according to claim 1 or 2, characterized in that: An end of the limiting rib close to the end surface of the outer annular side plate is provided with an inclined chamfer.

4. The front cover of the vehicle-mounted ultrasonic radar according to claim 1, characterized in that: Parts of the inner side surface of the limiting substrate respectively located at the inner and outer sides of the inner annular side plate have different depths relative to the end surface of the inner annular side plate.

5. The front cover of the vehicle-mounted ultrasonic radar as claimed in claim 4, characterized in that: A portion of the inner side surface of the limiting substrate located on the inner side of the inner annular side plate is closer to the end surface of the inner annular side plate than a portion located on the outer side of the inner annular side plate.

6. The front cover of the vehicle-mounted ultrasonic radar as claimed in claim 1, characterized in that: A height of the inner annular side plate protruding relative to the limiting substrate is greater than a height of the outer annular side plate protruding relative to the limiting substrate.

7. A vehicle-mounted ultrasonic radar, comprising a main housing having a hollow cavity and an opening at one end, an ultrasonic radar probe assembled in the hollow cavity of the main housing and with a detection end extending from the opening, and a front cover assembled at the opening of the main housing, characterized in that: The front cover is the front cover of the vehicle-mounted ultrasonic radar as described in any one of claims 1-6.

8. The vehicle-mounted ultrasonic radar according to claim 7, characterized in that: The main housing is provided with: An outer step surface and an inner step surface respectively connected to the end surfaces of the outer annular side plate and the inner annular side plate; and Welding bosses are respectively formed on the outer side and the inner side of the inner step surface and are used to abut against the laser welding surfaces on the front cover located on the outer side and the inner side of the inner annular side plate.

9. The vehicle-mounted ultrasonic radar according to claim 8, characterized in that: The end surface of the inner annular side plate is in contact with the inner step surface and the amount of compression deformation between the two during laser welding is 0.2±0.02 mm.

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