Ultrasonic sensor

Abstract

The utility model relates to an ultrasonic sensor, which comprises a shell, a probe core at least partially accommodated in the shell, and a positioning piece sleeved on the periphery of part of the probe core and used for directionally installing the probe core and the shell, the shell at least comprises a first direction and a second direction; the first orientation structure is arranged on the positioning piece, and the second orientation structure and the third orientation structure are arranged on the inner side of the shell and can be selectively matched with the first orientation structure. The second orientation structure is located in the first direction of the shell; the third orientation structure is located in the second direction of the shell; when the first directional structure is matched with the second directional structure, the beam angle of the probe core in the first direction is larger than that in the second direction; when the first orientation structure is matched with the third orientation structure, the beam angle of the probe core in the second direction is larger than that in the first direction. And the ultrasonic sensor can be selectively assembled according to the required beam angle control direction, so that the user experience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of sensors, in particular to an ultrasonic sensor. Background Art

[0002] The assembly of ultrasonic sensors in related technologies usually involves installing the probe core in a housing, which cannot be selectively assembled according to the required beam angle control direction, making it difficult to determine the beam angle direction, resulting in a poor user experience. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide an improved ultrasonic sensor.

[0004] The technical solution adopted by the utility model to solve the technical problem is: constructing an ultrasonic sensor, including a housing, a probe core at least partially accommodated in the housing, and a positioning member sleeved on a portion of the outer periphery of the probe core for directional installation of the probe core and the housing;

[0005] The housing includes at least a first direction and a second direction;

[0006] It also includes a first orientation structure arranged on the positioning member, a second orientation structure and a third orientation structure arranged on the inner side of the shell, which can be optionally matched with the first orientation structure; the second orientation structure is located in the first direction of the shell; the third orientation structure is located in the second direction of the shell; when the first orientation structure cooperates with the second orientation structure, the beam angle of the probe core in the first direction is greater than its beam angle in the second direction; when the first orientation structure cooperates with the third orientation structure, the beam angle of the probe core in the second direction is greater than its beam angle in the first direction.

[0007] In some embodiments, the positioning member includes a first end for the core to be installed and a second end disposed opposite to the first end;

[0008] The first orientation structure includes at least one set of orientation protrusions extending from the second end;

[0009] The second orientation structure includes at least one set of first orientation grooves provided on the inner wall of the housing;

[0010] The third orientation structure includes at least one set of second orientation grooves provided on the inner wall of the housing;

[0011] Either the first orientation groove or the second orientation groove cooperates with the orientation protrusion.

[0012] In some embodiments, each group of directional protrusions includes two symmetrically arranged directional protrusions;

[0013] Each group of the first orientation grooves includes two first orientation grooves symmetrically arranged in the first direction;

[0014] Each group of the second orientation grooves includes two second orientation grooves symmetrically arranged in the second direction.

[0015] In some embodiments, an identification structure is further included; the identification structure is provided on the positioning member;

[0016] The identification structure and the first orientation structure are arranged side by side in the axial direction of the positioning member.

[0017] In some embodiments, the positioning member includes a first end for the core probe to be installed;

[0018] The identification structure includes a boss protruding from the end surface of the first end.

[0019] In some embodiments, a positioning structure is provided between the probe core and the positioning member;

[0020] The positioning structure includes a positioning step provided on the outer wall of the probe core, and a positioning boss provided on the inner wall of the positioning member and corresponding to the positioning step.

[0021] In some embodiments, the system further includes a control mainboard housed in the housing and wires connected to the control mainboard and led out to the outside of the housing.

[0022] In some embodiments, the probe core is provided with a pin, and the control main board is provided with a connection hole corresponding to the pin; the pin is inserted into the connection hole;

[0023] And / or, the wire is provided with welding feet, the control main board is provided with welding points, and the welding feet are correspondingly connected to the welding points.

[0024] In some embodiments, a limiting structure that cooperates with the control mainboard is provided on the inner side of the shell.

[0025] In some embodiments, the housing includes a first opening and a second opening disposed opposite to the first opening; the core probe portion protrudes from the first opening;

[0026] It also includes a mounting bottom cover that is sleeved on at least a portion of the outer periphery of the housing and covers the second opening; the mounting bottom cover is connected to the housing by a snap-fit ​​structure;

[0027] And / or, further comprising a fixed housing sleeved on the housing and located at the first opening;

[0028] And / or, it also includes a protective cover sleeved on the probe core.

[0029] The implementation of the ultrasonic sensor of the utility model has the following beneficial effects: the ultrasonic sensor is provided with a first directional structure on the positioning member, a second directional structure is provided on the inner side of the shell and located in the first direction of the shell, and a third directional structure is provided on the inner side of the shell and located in the second direction of the shell, and the second directional structure and the third directional structure can be selectively matched with the first directional structure, so that when the first directional structure is matched with the second directional structure, the beam angle of the probe core in the first direction is greater than its beam angle in the second direction; when the first directional structure is matched with the third directional structure, the beam angle of the probe core in the second direction is greater than its beam angle in the first direction, and thus the ultrasonic sensor can be selectively assembled according to the required beam angle control direction, and can be easily judged and identified after assembly, which greatly improves the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0031] Figure 1 This is a schematic structural diagram of an ultrasonic sensor in the first embodiment of the present invention;

[0032] Figure 2 yes Figure 1 A schematic diagram of the partial structure of the ultrasonic sensor shown;

[0033] Figure 3 yes Figure 1 a cross-sectional view of the ultrasonic sensor shown;

[0034] Figure 4 yes Figure 2 The schematic diagram of the structure of the ultrasonic sensor shown;

[0035] Figure 5 yes Figure 2 Another perspective structural decomposition diagram of the ultrasonic sensor shown;

[0036] Figure 6 yes Figure 4 Schematic diagram of the shell structure of the ultrasonic sensor shown;

[0037] Figure 7 yes Figure 6 Another perspective structural diagram of the housing shown;

[0038] Figure 8 yes Figure 4 A schematic structural diagram of a positioning member of the ultrasonic sensor shown;

[0039] Figure 9 yes Figure 8 A schematic structural diagram of the positioning member from another angle;

[0040] Figure 10yes Figure 4 A schematic structural diagram of the probe core of the ultrasonic sensor shown;

[0041] Figure 11 yes Figure 4 The schematic diagram of the structure of the installation bottom cover of the ultrasonic sensor shown;

[0042] Figure 12 yes Figure 11 Another structural diagram of the bottom cover installation is shown;

[0043] Figure 13 It is a structural diagram of the ultrasonic sensor in the second embodiment of the present utility model. DETAILED DESCRIPTION

[0044] In order to provide a clearer understanding of the technical features, objectives, and effects of the present invention, a specific embodiment of the present invention is now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper," "inner," "outer," etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. These directions are merely for the purpose of facilitating the description of the present invention and do not require that the devices or components referred to have specific directions. Therefore, they should not be construed as limitations on the present invention.

[0045] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "connection", "fixation", and "setting" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0046] Figure 1 and Figure 2 The first embodiment of the ultrasonic sensor of the present invention is shown. This ultrasonic sensor can be mounted on a vehicle or robot and used for distance measurement. It can be selectively assembled based on the desired beam angle control direction and offers advantages such as high sensitivity, high reliability, miniaturization, and a superior user experience.

[0047] like Figures 3 to 5 As shown, in this embodiment, the ultrasonic sensor may include a housing 1, a control board 2, a positioning member 3, and a probe core 4. The housing 1 may accommodate the control board 2 and the probe core 4. The control board 2 is disposed within the housing 1 and may be connected to the probe core 4. The positioning member 3 is disposed over at least a portion of the probe core 4 and serves to position the probe core 4 relative to the housing 1. The probe core 4 may also function as a distance measurement device.

[0048] like Figure 6 and Figure 7 As shown, in this embodiment, the housing 1 includes a cylindrical body 11 and an extension portion 12. The cylindrical body 11 has a generally circular cross-section, with a housing cavity 1101 and a receiving groove 1102 formed on its inner side. The housing cavity 1101 and the receiving groove 1102 are arranged side by side along the axial direction of the cylindrical body 11. The housing cavity 1101 can be used to accommodate the control motherboard 2, and the receiving groove 1102 can be used to accommodate the probe core 4. A wire hole 1100 can be provided in the housing 1, located on the inner wall of the housing cavity 1101. The wire hole 1100 can have a generally rectangular cross-section and can be used to lead out the conductive connection portion 42 of the probe core 4. The extension portion 12 is provided on the outer wall of the cylindrical body 11 and extends radially outward from the cylindrical body 11. It can be used to connect to the wire 7. In some embodiments, the extension portion 12 and the cylindrical body 11 can be integrally formed. In some embodiments, the housing 1 further includes a first opening 1103 and a second opening 1104 . The first opening 1103 and the second opening 1104 can be located at opposite ends of the cylindrical body 11 . The probe core 4 can partially protrude from the first opening 1103 .

[0049] In this embodiment, the control mainboard 2 may be provided with three solder joints 21, specifically a first solder joint 211, a second solder joint 212, and a third solder joint 213. These solder joints 21 are used to connect to the wire 7. It is understood that in other embodiments, the number of solder joints 21 is not limited to three; in some embodiments, the number of solder joints 21 may be 3-7. In some embodiments, the control mainboard 2 may be provided with connection holes 22, which may be connected to the core probe 4, thereby facilitating an electrically conductive connection between the core probe 4 and the control mainboard 2. In some embodiments, there may be two connection holes 22, specifically a first connection hole 221 and a second connection hole 222.

[0050] For example Figures 3 to 7As shown, in this embodiment, a limiting structure 13 that cooperates with the control main board 2 is provided on the housing 1. The limiting structure 13 is located on the inner wall of the accommodating cavity 1101 and can be roughly L-shaped. There are two limiting structures 13, and the two limiting structures 13 are distributed on two opposite sides of the accommodating cavity 1101 and are symmetrically arranged. They can be squeezed and positioned with the two oppositely arranged side planes 201 of the control main board 2. Specifically, the limiting structure 13 may include a first limiting surface 131 and a second limiting surface 132. The first limiting surface 131 is connected to the second limiting surface 132 and is vertically arranged. When the control main board 2 is assembled with the housing 1, the first limiting surface 131 is in contact with the side plane 201 of the control main board 2, and the second limiting surface 132 can be in contact with the bottom surface of the control main board 2 for limiting. After the control mainboard 2 and the housing 1 are firmly fixed, the accommodating cavity 1101 can be sealed by injecting glue. The depth of the sealing is less than the depth of the accommodating cavity 1101, that is, the glue is not higher than the end surface of the housing 1 away from the receiving groove 1102.

[0051] like Figure 8 and Figure 9 As shown, in this embodiment, the positioning member 3 can be roughly annular and can be made of silicone. In some embodiments, the positioning member 3 can include an annular body 31 and an outwardly extending outer flange 32 disposed at one end of the annular body 31. After the positioning member 3 is installed in the housing 1, the sidewalls of the annular body 31 can mate with the inner wall of the housing 1, the bottom wall can mate with the bottom wall 1b of the receiving groove 1102, and the outer flange 32 can mate with the end surface 1a of the housing 1. The diameter of the annular body 31 is adapted to the inner radial direction of the receiving groove 1102. In some embodiments, the positioning member 3 can include a first end 301 and a second end 302, wherein the first end 301 and the second end 302 are disposed opposite each other, and the first end 301 can be used to receive the core probe 4. The outer flange 32 is located at the first end 301.

[0052] like Figures 6 to 9As shown, in this embodiment, the positioning member 3 and the housing 1 are provided with orientation structures. Specifically, the positioning member 3 is provided with a first orientation structure 33. A second orientation structure 112 is provided inside the housing 1. The second orientation structure 112 is located in a first direction of the housing 1, which can be the direction in which the extension portion 12 of the housing 1 extends. A third orientation structure 113 is provided inside the housing 1. The third orientation structure 113 is located in a second direction of the housing 1. The first direction can be perpendicular to the second direction. Either the second orientation structure 112 or the third orientation structure 113 can be coordinated with the first orientation structure 111, thereby facilitating selective installation of the core probe 4 based on beam angle control. Specifically, when the first orientation structure 33 is coordinated with the second orientation structure 112, the beam angle of the core probe 4 in the first direction is greater than its beam angle in the second direction. When the first orientation structure 33 is coordinated with the third orientation structure 113, the beam angle of the core probe 4 in the second direction is greater than its beam angle in the first direction. If the user requires that the probe core 4 has a large beam angle in the first direction, the probe core 4 can be installed in the housing 1 along the direction in which the first directional structure 33 and the second directional structure 112 cooperate. If the user requires that the probe core 4 has a large beam angle in the second direction, the probe core 4 can be installed in the housing 1 along the direction in which the second directional structure 33 and the third directional structure 113 cooperate.

[0053] Furthermore, in this embodiment, the first orientation structure 33 may include at least one set of orientation protrusions 331 extending from the second end 302. In this embodiment, the orientation protrusions 331 may be a single set. Each set of orientation protrusions 331 may include two orientation protrusions 331, which may be symmetrically arranged along the radial direction of the positioning member 33. Each orientation protrusion 331 may be substantially D-shaped. In some embodiments, the shape of the orientation protrusions 331 is not limited to a D-shape and may be circular, rectangular, or other shapes.

[0054] In this embodiment, the second orientation structure 112 may include at least one group of first orientation grooves 1121 disposed on the inner wall of the housing 1. In this embodiment, the first orientation grooves 1121 may be a group, and each group of first orientation grooves 1121 may be two. The two first orientation grooves 1121 may be symmetrically disposed along the radial direction of the housing 1. The first orientation grooves 1121 cooperate with the orientation protrusions 331. Specifically, the orientation protrusions 331 may be snapped into the first orientation grooves 1121. The shape of the first orientation grooves 1121 may be adapted to the shape of the orientation protrusions 331.

[0055] In this embodiment, the third orientation structure 113 may include at least one group of second orientation grooves 1131 disposed on the inner wall of the housing 1. In this embodiment, the second orientation grooves 1131 may be a group, and each group of second orientation grooves 1131 may be two. The two second orientation grooves 1131 may be symmetrically disposed along the radial direction of the housing 1. The second orientation grooves 1131 cooperate with the orientation protrusions 331. Specifically, the orientation protrusions 331 may be snapped into the second orientation grooves 1131. The shape of the second orientation grooves 1131 may be adapted to the shape of the orientation protrusions 331.

[0056] Either the first orientation groove 1121 or the second orientation groove 1131 can be selectively engaged with the positioning protrusion 331. When the positioning protrusion 331 engages the first orientation groove 1121, the beam angle of the core probe 4 in the first direction is greater than its beam angle in the second direction. When the positioning protrusion 331 engages the second orientation groove 1131, the beam angle of the core probe 4 in the second direction is greater than its beam angle in the first direction. As can be appreciated, selective installation of the beam angle can be achieved through simple adjustments during assembly, thereby improving the user experience.

[0057] In this embodiment, the ultrasonic sensor also includes an identification structure 34, which is disposed on the positioning member 3 to facilitate beam angle visualization. Specifically, the identification structure 34 is arranged side by side with the first orientation structure 33 in the axial direction of the positioning member 3. That is, the identification structure 34 and the first orientation structure 33 are arranged in the same direction. In some embodiments, the identification structure 34 may include a boss 341. The boss 341 may be disposed along the end surface of the protruding first end 301. There may be two bosses 341, with the two bosses 341 being collinear. Each boss 341 is axially aligned with each positioning protrusion 331. In some embodiments, the bosses 341 may be fan-shaped. Of course, it is understood that in other embodiments, the bosses 341 are not limited to fan-shaped and may be cylindrical or rectangular. When the two bosses 341 are located in the first direction, the beam angle in the first direction is large, and the beam angle in the second direction is small. When the two bosses 341 are located in the second direction, the beam angle in the second direction is large, and the beam angle in the first direction is small.

[0058] like Figure 10As shown, in this embodiment, the probe core 4 may include a body 41 and a conductive connection portion 42; the body 41 is generally cylindrical, with a generally circular cross-section, and a diameter that can be selected from 8 to 20 mm, preferably 14 mm. The conductive connection portion 42 may be led out from one end of the body 41. The conductive connection portion 42 is provided with a pin 421 and a protective shell 422 that is sleeved on the pin 421. The conductive connection portion 42 is plugged into the connection hole 22 on the control main board 2 through the pin 421. There may be two pins 421, one of which may be plugged into the first connection hole 221, and the other pin 421 may be plugged into the second connection hole 222, thereby achieving point connection of the conductive connection portion 42 to the control main board 2. In some embodiments, the pin 421 and the connection hole 22 may be fixed by welding.

[0059] When the probe core 4 is assembled with the outer shell 1, the probe core 4 and the positioning part 3 can be assembled to form an assembly, and then the probe core 4 can be inserted from the receiving groove 1102, and the conductive connecting part 42 of the probe core 4 can be passed through the bottom through hole of the receiving groove 1102 into the accommodating cavity 1101, and then the protective shell 422 can be led to the wire hole 1100 for fixation, and then the control main board 2 can be fitted with the end face of the wire hole 1100.

[0060] In this embodiment, a positioning structure is provided between the core probe 4 and the positioning member 3. This positioning structure may include a positioning step 411 and a positioning boss 35. The positioning step 411 may be provided on the outer wall of the core probe 4. There are two positioning steps 411, located on opposite sides of the core probe 4, that is, they are symmetrically arranged along the radial direction of the core probe 4. The positioning boss 35 is provided on the inner wall of the positioning member 3, corresponding one-to-one with the positioning steps 411. An annular support wall 36 may be provided inside the positioning member 3 to support the core probe 4. When the core probe 4 is assembled with the positioning member 3, the positioning step 411 overlaps the positioning boss 35 and abuts against it, allowing the bottom surface of the core probe 4 to abut against the support wall 36.

[0061] See again Figures 3 to 5 In this embodiment, the ultrasonic sensor further includes a fixed shell 5, which is sleeved on the shell 1 and located at the first opening 1103. In some embodiments, the fixed shell 5 may be roughly annular and may be coaxially arranged with the first opening 1103. The fixed shell 5 may be used to firmly fix the probe core 4, the positioning member 3 and the shell 1, thereby preventing the probe core 4 and the positioning member 3 from falling off and shaking. The fixed shell 5 and the shell 1 may be fixed by snapping. In some embodiments, a snap-in groove 51 may be provided on the inner side wall of the fixed shell 5, and a snap-in protrusion 111 may be provided on the outer side wall of the shell 1. The snap-in protrusion 111 may be provided near the first opening 1103 and may be provided corresponding to the snap-in groove 51. When the fixed shell 5 and the shell 1 are assembled, the snap-in protrusion 111 may be snapped into the snap-in groove 51 to achieve fixation.

[0062] In this embodiment, the ultrasonic sensor further includes a protective cover 6. The protective cover 6 may be a silicone cover, which can be sleeved on the probe core 4 and fixed by the fixed housing 5 to protect the probe core 4.

[0063] In this embodiment, the ultrasonic sensor further includes a wire 7, which can be extended from the housing 1 to the outside for connection to an external device. One end of the wire 7 can be inserted through the extension portion 12 and connected to the control mainboard 2. The wire 7 can be secured to the control mainboard 2 by welding. In some embodiments, one end of the wire 7 is provided with a solder leg 71 that is soldered to the solder point 21 on the control mainboard 2. The solder leg 71 may include a first solder leg 711, a second solder leg 712, and a third solder leg 713, wherein the first solder leg 711 is soldered to the first solder point 211, the second solder leg 712 is soldered to the second solder point 212, and the third solder leg 713 is soldered to the third solder point 213.

[0064] See also Figure 11 and Figure 12 In this embodiment, the ultrasonic sensor further includes a mounting bottom cover 8, which can be sleeved on at least part of the outer circumference of the housing 1 and can cover the second opening 1104. In some embodiments, the mounting bottom cover 8 may include a covering portion 81 and a sleeve portion 82. The covering portion 81 can cover the second opening 1104. The sleeve portion 82 is provided on the covering portion 81 and extends outward in a direction perpendicular to the covering portion 81. It is a cylindrical structure with a notch on the side. Two mounting portions 811 extend from opposite sides of the covering portion 81. The two mounting portions 811 have mounting holes 8111. The mounting holes 8111 can be used to connect and fix external components. In some embodiments, the mounting bottom cover 8 can be connected and fixed to the housing 1 by providing a snap-fit ​​structure. Specifically, a buckle hole 822 can be provided on the mounting bottom cover 8, and the buckle hole 822 is located on two opposite sides of the sleeve portion 82. The extension portion 12 of the housing 1 is provided with a buckle 121, which can be provided correspondingly to the buckle hole 822. When the bottom cover 8 and the housing 1 are assembled, the buckle 121 and the buckle hole 822 can be used to fix them.

[0065] In this embodiment, the ultrasonic sensor may further include a mounting bracket 9 that is mounted on the housing 1 and positioned to align with the external device. The mounting bracket 9 may be a threaded mounting bracket. The mounting bracket 9 may be secured to the mounting base 8 by snapping. Specifically, the mounting base 8 may be provided with a hook 821 that engages with a hole 91 provided on the mounting bracket 9.

[0066] Figure 13 A second embodiment of the ultrasonic sensor of the present invention is shown, which differs from the first embodiment in that the mounting bracket 9 can be a spring-type mounting bracket.

[0067] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. An ultrasonic sensor, characterized in that: It comprises a housing (1), a probe core (4) at least partially accommodated in the housing (1), and a positioning member (3) sleeved on a portion of the outer circumference of the probe core (4) for directional mounting of the probe core (4) and the housing (1); The housing (1) comprises at least a first direction and a second direction; The invention also comprises a first orientation structure (33) arranged on the positioning member (3), a second orientation structure (112) and a third orientation structure (113) arranged on the inner side of the housing (1) and selectively cooperating with the first orientation structure (33); the second orientation structure (112) is located in the first direction of the housing (1); the third orientation structure (113) is located in the second direction of the housing (1); when the first orientation structure (33) cooperates with the second orientation structure (112), the beam angle of the probe core (4) in the first direction is greater than the beam angle in the second direction; when the first orientation structure (33) cooperates with the third orientation structure (113), the beam angle of the probe core (4) in the second direction is greater than the beam angle in the first direction.

2. The ultrasonic sensor according to claim 1, characterized in that: The positioning member (3) comprises a first end (301) for the core probe (4) to be inserted into, and a second end (302) arranged opposite to the first end (301); The first orientation structure (33) comprises at least one group of orientation protrusions (331) extending from the second end (302); The second orientation structure (112) comprises at least one group of first orientation grooves (1121) arranged on the inner wall of the housing (1); The third orientation structure (113) comprises at least one group of second orientation grooves (1131) arranged on the inner wall of the housing (1); Either the first orientation groove (1121) or the second orientation groove (1131) cooperates with the orientation protrusion (331).

3. The ultrasonic sensor according to claim 2, characterized in that: Each group of directional protrusions (331) comprises two symmetrically arranged directional protrusions (331); Each group of the first directional grooves (1121) comprises two first directional grooves (1121) symmetrically arranged in the first direction; Each group of the second orientation grooves (1131) comprises two second orientation grooves (1131) symmetrically arranged in the second direction.

4. The ultrasonic sensor according to claim 1, characterized in that: It also includes an identification structure; the identification structure is arranged on the positioning member (3); The identification structure and the first orientation structure (33) are arranged side by side in the axial direction of the positioning member (3).

5. The ultrasonic sensor according to claim 4, characterized in that: The positioning member (3) comprises a first end (301) for the core probe (4) to be installed; The identification structure comprises a boss protruding from the end surface of the first end (301).

6. The ultrasonic sensor according to claim 1, characterized in that: A positioning structure is provided between the probe core (4) and the positioning member (3); The positioning structure comprises a positioning step (411) arranged on the outer wall of the probe core (4), and a positioning boss (35) arranged on the inner wall of the positioning member (3) and corresponding to the positioning step (411).

7. The ultrasonic sensor according to claim 1, characterized in that: It also includes a control mainboard (2) accommodated in the housing (1) and a wire (7) connected to the control mainboard (2) and led out to the outside of the housing (1).

8. The ultrasonic sensor according to claim 7, characterized in that: The probe core (4) is provided with a plug pin (421), and the control main board (2) is provided with a connection hole (22) corresponding to the plug pin (421); the plug pin (421) is inserted into the connection hole (22); And / or, the wire (7) is provided with a welding foot (71), the control main board (2) is provided with a welding point (21), and the welding foot (71) is correspondingly connected to the welding point (21).

9. The ultrasonic sensor according to claim 8, characterized in that: A limiting structure (13) that cooperates with the control main board (2) is provided on the inner side of the housing (1).

10. The ultrasonic sensor according to claim 1, characterized in that: The housing (1) comprises a first opening (1103) and a second opening (1104) arranged opposite to the first opening (1103); the core probe (4) partially protrudes from the first opening (1103); It also comprises a mounting bottom cover (8) which is sleeved on at least part of the outer circumference of the outer shell (1) and covers the second opening (1104); the mounting bottom cover (8) is connected to the outer shell (1) by providing a snap-fit ​​structure; And / or, it also includes a fixed housing (5) sleeved on the housing (1) and located at the first opening (1103); And / or, it also includes a protective cover (6) sleeved on the probe core (4).

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