CN221037460U - Ultrasonic sensor - Google Patents

Abstract

The utility model relates to an ultrasonic sensor comprising: a housing; the probe core is at least partially arranged in the shell; the control main board is arranged in the shell; the two first contact pins are arranged in the shell and are inserted into the control main board; the FPC connecting piece is arranged in the shell; the FPC connecting piece is connected with the probe core and used for leading out two electrodes of the probe core, and the FPC connecting piece is connected with the two first contact pins. According to the ultrasonic sensor, the FPC connecting piece is arranged in the shell, the FPC connecting piece is connected with the probe core to serve as two electrode leading-out electrodes of the probe core to be connected with the first contact pin, and therefore assembly efficiency and assembly stability can be improved.

Description

Ultrasonic sensor

Technical Field

The utility model relates to the field of sensors, in particular to an ultrasonic sensor.

Background

In the sensor in the related art, two electrodes of the probe core are usually two electrode leads, wherein the positive electrode lead is usually a conventional lead, the negative electrode lead is usually formed by riveting a rivet on the side wall of the shell of the probe core and then leading out a welding wire from the rivet, in some embodiments, the negative electrode lead is also attached to the side wall of the shell of the probe core in a spring mode, and is led out by taking the tail end of the spring as an outgoing line.

Disclosure of utility model

The utility model aims to provide an improved ultrasonic sensor.

The technical scheme adopted for solving the technical problems is as follows: the present utility model constructs an ultrasonic sensor, comprising:

A housing;

The probe core is at least partially arranged in the shell;

The control main board is arranged in the shell;

The two first contact pins are arranged in the shell and are inserted into the control main board;

The FPC connecting piece is arranged in the shell; the FPC connecting piece is connected with the probe core and used for leading out two electrodes of the probe core, and the FPC connecting piece is connected with the two first contact pins.

In some embodiments, the FPC connector includes a first connection portion, a second connection portion disposed at one end of the first connection portion, and a third connection portion disposed at the other end of the first connection portion; the second connecting part is connected with the probe core, and the third connecting part is connected with the first contact pin.

In some embodiments, the second connecting portion is bent with the first connecting portion;

and/or, the third connecting part and the first connecting part are bent and arranged.

In some embodiments, the probe core includes a first electrode and a second electrode;

The FPC connector comprises a first conductive part connected with the first electrode, a second conductive part connected with the second electrode, a third conductive part connected with one of the first pins and a fourth conductive part connected with the other of the first pins; the first conductive part is communicated with the third conductive part; the second conductive part is conducted with the fourth conductive part.

In some embodiments, a positioning member for positioning the probe core and the housing;

The positioning piece is sleeved on at least part of the periphery of the probe core;

The probe core comprises a main body part and an extension part arranged at one end of the main body part, and the extension part extends outwards from the outer side wall of the main body part;

part of the outer side wall of the main body part is attached to the inner wall of the positioning piece;

the outer side wall of the extension part is attached to the inner wall of the positioning piece.

In some embodiments, the extension and the positioning member have a first positioning structure disposed thereon;

The first positioning structure comprises a first positioning section arranged on the extension part and a second positioning section arranged on the inner wall of the positioning piece; the first positioning tangential plane is correspondingly arranged with the first positioning tangential plane so as to be attached to the first positioning tangential plane.

In some embodiments, the positioning member and the housing are provided with a second positioning structure configured to position the probe core detection direction;

The second positioning structure comprises at least one group of positioning grooves arranged on the outer side wall of the positioning piece and at least one group of positioning bosses arranged on the inner wall of the shell; each group of positioning grooves comprises two symmetrically arranged positioning grooves; each group of positioning bosses comprises two symmetrically arranged positioning bosses;

each positioning boss is matched with each positioning groove.

In some embodiments, the positioning grooves are in two groups; the positioning grooves in the two groups of positioning grooves are equidistantly arranged;

and/or the number of the positioning bosses is two, and the positioning bosses in the two groups of positioning bosses are equidistantly arranged.

In some embodiments, the device further comprises a second contact pin, wherein the second contact pin is arranged in the shell and connected with the control main board, and is used for connecting the control main board with an external component.

In some embodiments, the housing includes a first opening and a second opening disposed opposite the first opening;

The probe core part penetrates out of the first opening;

the ultrasonic sensor further comprises a fixed shell, wherein the fixed shell is sleeved on the shell and is positioned at the first opening; a fixed structure is arranged between the shell and the fixed shell;

And/or, the ultrasonic sensor further comprises a protective sleeve sleeved on the periphery of the probe core;

And/or, the ultrasonic sensor further comprises a metal outer cover sleeved on the periphery of the control main board, the metal outer cover is embedded and installed in the shell, and the metal outer cover comprises a card inserting structure connected with the control main board.

The ultrasonic sensor has the following beneficial effects: according to the ultrasonic sensor, the FPC connecting piece is arranged in the shell, the FPC connecting piece is connected with the probe core to serve as two electrode leading-out electrodes of the probe core to be connected with the first contact pin, and therefore assembly efficiency and assembly stability can be improved.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of an ultrasonic sensor in some embodiments of the utility model;

FIG. 2 is a schematic view of the ultrasonic sensor of FIG. 1 at another angle;

FIG. 3 is a cross-sectional view of the ultrasonic sensor shown in FIG. 1;

FIG. 4 is an exploded schematic view of the ultrasonic sensor of FIG. 1;

FIG. 5 is another exploded view of the ultrasonic sensor of FIG. 1;

FIG. 6 is a schematic view of the housing of the ultrasonic sensor of FIG. 5;

FIG. 7 is another angular schematic view of the housing of FIG. 6;

fig. 8 is a schematic structural view of the ultrasonic sensor positioning member shown in fig. 5.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "upper", "lower", "inner", "outer", etc. are configured and operated in specific directions based on the directions or positional relationships shown in the drawings, and are merely for convenience of description of the present utility model, and do not indicate that the apparatus or element referred to must have specific directions, and thus should not be construed as limiting the present utility model.

It should also be noted that unless explicitly stated or limited otherwise, terms such as "mounted," "connected," "secured," "disposed," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. When an element is referred to as being "on" or "under" another element, it can be "directly" or "indirectly" on the other element or one or more intervening elements may also be present. The terms "first," "second," "third," and the like are used merely for convenience in describing the present utility model and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," etc. may explicitly or implicitly include one or more such features. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Figures 1 and 2 illustrate some preferred embodiments of the ultrasonic sensor of the present utility model. The ultrasonic sensor may be mounted on a car body or a robot, which may be used for ranging. The ultrasonic sensor has the advantages of simple structure, simplicity and convenience in installation, high stability and miniaturization design.

As shown in fig. 3 to 5, in some embodiments, the ultrasonic sensor may include a housing 1, a control main board 2, a probe core 3, an FPC connector 4, two first pins 5, and three second pins 6. The housing 1 may be used to house components such as a control motherboard 2, a probe core 3, an FPC connector 4, a first pin 5, and the like. The control main board 2 is arranged in the shell 1 and is connected with the probe core 3 through the FPC connecting piece 4 and the first contact pin 5. The probe core 3 is partially arranged in the shell 1 and is used for measuring. In other embodiments, the probe core 3 may be entirely mounted in the housing. The FPC connector 4 is arranged in the shell 1 and connected with the probe core 3, and is used for leading out two electrodes of the probe core 3. The FPC connector 4 is connected to two first pins 5, and is further connected to the control board 2. The first contact pin 5 is disposed in the housing 1 and can be inserted on the control motherboard 2 to be electrically connected with the control motherboard 2. The second contact pin 6 is disposed in the housing 1 and connected to the control motherboard 2, and can be used for connecting with an external component to perform electrical signal transmission.

As shown in fig. 4 to 7, in some embodiments, the housing 1 may include a cylindrical body 11 and a connection handle 14, where the cylindrical body 11 has a substantially circular cross section, and a receiving cavity 110 is formed on the inner side, and the receiving cavity 110 may be used to receive the control main board 2. The connection handle 14 is provided on an outer side wall of the cylindrical body 11 and extends radially outwardly of the cylindrical body 11, and is adapted to be connected to an external component. In some embodiments, the stem 14 may be integrally formed with the barrel 11.

In some embodiments, the inner wall of the cylindrical body 11 is provided with a first mounting hole 111, and a first mounting post 1101 is convexly provided on the inner wall of the cylindrical body 11, and the first mounting post 1101 may be provided along the axial direction of the cylindrical body 11. The first mounting hole 111 is formed in the first mounting post 1101 and is disposed along the axial direction of the first mounting post 1101. The number of the first mounting holes 111 may be two, the number of the corresponding first mounting posts 1101 may be two, the first mounting holes 111 may be arranged in one-to-one correspondence with the first pins 5, and the first pins 5 may pass through the first mounting holes 111 to be connected with the control motherboard 2.

In some embodiments, the inner wall of the cylinder 11 is provided with a second mounting hole 112, and a second mounting post 1102 is protruded on the inner wall of the cylinder 11, and the second mounting post 1102 may be disposed along the axial direction of the cylinder 11. The second mounting hole 112 is formed in the second mounting column 1102 and is disposed along an axial direction of the second mounting column 1102. The number of the second mounting holes 112 may be at least two, and the number of the corresponding second mounting posts 1102 may be at least two, specifically, the number of the second mounting holes 112 and the number of the second mounting posts 1102 are three, the second mounting holes 112 may be set in one-to-one correspondence with the second pins 6, and the second pins 6 may pass through the second mounting holes 112 to be connected with the control motherboard 2. The second mounting hole 112 may extend to the stem 14 so that the second pin 6 may be conveniently introduced to the stem 14.

In some embodiments, the cylindrical body 11 is provided with an annular body 12 at one end, the annular body 12 is substantially annular, and a receiving groove 120 may be formed inside the annular body 12, and the receiving groove 120 may be used to receive the probe core 3. In some embodiments, the radial dimension of the annular body 12 is smaller than the radial dimension of the cylindrical body 11.

In some embodiments, the housing 1 further includes a first opening 123 and a second opening 113, and the first opening 123 is disposed opposite to the second opening 113 and communicates with each other. The first opening 123 is formed at an end of the annular body 12 away from the cylindrical body 11, and the second opening 113 is formed at an end of the cylindrical body 11 away from the annular body 12. The first opening 123 allows the probe core 3 to partially penetrate out. The second opening 113 allows the control motherboard 2 to be mounted into the housing 1.

In some embodiments, the control motherboard 2 is mounted in the accommodating cavity 110 of the barrel 11, and may have a jack 201 thereon, where the jack 2012 is disposed in a one-to-one correspondence with the first pin 5 and the second pin 6, for inserting the first pin 5 and the second pin 6.

In some embodiments, the probe core 3 includes a main body 31 and an extension portion 32, where the piezoelectric ceramic sheet is accommodated inside the main body 31. The main body 31 is substantially circular in cross section. The extension portion 32 is disposed at one end of the main body portion 31, and extends outward from an outer side wall of the main body portion 31 in a radial direction of the main body portion 31. In some embodiments, the probe core 3 further includes a first electrode and a second electrode, which are located on the piezoelectric ceramic sheet in the main body 31 and can be led out through the FPC connector 4.

In some embodiments, FPC connector 4 may be partially located in body portion 31 and connected to the first and second electrodes of the piezoceramic sheet in body portion 31, partially protruding from extension 32. In some embodiments, the FPC connector 4 is a flexible wiring board on which the first connection wiring and the second connection wiring are provided. The first connection line may be used to connect the first electrode and one of the first pins 5, and the second connection line may be used to connect the second electrode and the other of the pins 5, thereby realizing two electrodes led out of the probe core 3 and connecting the two electrodes with the two first pins 5, respectively. Because FPC connecting piece 4 is flexible material, guarantee as far as possible that the first connecting line and the second connecting line of FPC line can not fracture under the high frequency vibration of piezoceramics piece, very big improvement holistic stability.

Specifically, in some embodiments, FPC connector 4 may include a first conductive portion, a second conductive portion, a third conductive portion, and a fourth conductive portion. The first conductive part and the third conductive part are communicated to form a first connection circuit; the second conductive part is conducted with the fourth conductive part to form a second connection circuit. The first conductive portion may be connected to the first electrode, which may be attached or soldered to the first electrode, and in some embodiments, the first conductive portion may be a first pad. The second conductive portion may be connected to the second electrode, which may be attached or soldered to the second electrode, and in some embodiments, the second conductive portion may be a second pad. The third conductive part can also be connected with one of the first pins, and particularly the third conductive part and the first pin can be fixed through welding, so that the connection firmness is improved. The fourth conductive part may also be connected to another first pin, and in particular, the fourth conductive part may be fixed to the first pin by welding, thereby improving connection firmness.

In some embodiments, the FPC connector 4 is generally zigzag. In some embodiments, the FPC connector 4 may include a first connection portion 41, a second connection portion 42, and a third connection portion 43. The first connecting portion 41 may have a substantially rectangular shape. The second connection portion 42 is disposed at one end of the first connection portion 41 and is bent with the first connection portion 41. The second connection portion 42 is disposed at the other end of the first connection portion 41 and is bent with the first connection portion 41. The second connection part 42 may be connected to the probe core 3, and in particular, the second connection part 42 may be disposed in the probe core 3 to be connected to two electrodes of the piezoelectric ceramic sheet. The third connection portion 43 may be connected with the first pin. The first conductive portion and the second conductive portion are formed on the second connection portion 42. The third conductive portion and the fourth conductive portion are formed on the third connection portion 43.

In some embodiments, the first pin 5 may be mounted to the first mounting hole 111 in the axial direction of the cylinder 11, and both ends may pass out of the first mounting hole 111. The distance between the two first contact pins can be 3-10 mm. Further alternatively, the spacing between the two first pins may be 6.7mm.

In some embodiments, the second pin 6 may be disposed in a bent manner, and partially located in the barrel 11 and connected to the control motherboard 2, and partially extending to the connection handle 14, so as to be used as a plug terminal for plugging with an external device. The three second pins 6 may be arranged side by side and at intervals, and the distance between two adjacent second pins 6 may be 2-6 mm, and in some embodiments, preferably, the distance between two adjacent second pins 6 may be 4mm.

In some embodiments, the ultrasonic sensor further includes a fixed housing 7, where the fixed housing 7 is sleeved on the housing 1 and is located at the first opening 123. Specifically, the fixing housing 7 is substantially annular and may be sleeved on the annular body 12, and may be used to fix the probe core 3 and the housing 1.

In some embodiments, the fixing housing 7 and the casing 1 are provided with a fixing structure, specifically, the fixing structure may include a fixing buckle 71 and a clamping groove 13, the fixing buckle 71 may be convexly disposed on an inner sidewall of the fixing housing 7, and the clamping groove 13 is located between the cylindrical body 11 and the annular body 12, and may be disposed along a circumferential direction of the cylindrical body 11 and the annular body 12. When the fixing case 7 is assembled with the housing 1, the fixing buckle 71 can be engaged with the engaging groove 13, and the inner wall of the fixing case 7 is attached to the outer wall of the annular body 12 of the housing 1.

In some embodiments, the stationary housing 7 and the casing 1 are provided with guiding structures. The guiding structure may include guiding grooves 122 and guiding protrusions 72, the guiding grooves 122 are disposed on the outer side wall of the annular body 12, and two guiding grooves 122 may be symmetrically disposed along the radial direction of the annular body 12. The guide protrusions 72 are protruded from the inner side wall of the fixed housing 7 and are disposed in one-to-one correspondence with the guide grooves 122. In some embodiments, the guide groove 122 and the guide protrusion 72 have triangular structures, and the width of the guide groove 122 may decrease from the first opening 123 toward the card slot 13, and the shape of the guide protrusion 72 corresponds to the shape of the guide groove 122. The guide protrusion 72 and the guide groove 122 cooperate to guide the assembly of the fixing housing 7 and the housing 1, so that the fixing housing 7 is aligned with the housing 1, and the fixing buckle 71 can be easily clamped into the clamping groove 13 by simple pressing after the fixing housing 7 is aligned with the housing 1.

As shown in fig. 4, 5 and 8, in some embodiments, the ultrasonic sensor further includes a positioning member 8, and the positioning member 8 may be used for positioning and mounting the probe core 3 and the housing 1. In some embodiments, the positioning member 8 may be a silicone member. The positioning member 8 may be in a ring structure, and may be sleeved on at least part of the periphery of the probe core 3, and is in interference fit with the probe core 3, so as to form a component with the probe core 3. Part of the outer side wall of the main body 31 of the probe core 3 can be attached to the inner wall of the positioning member 8. The outer side wall of the extension part of the probe core 3 is attached to the inner wall of the positioning piece 8.

In some embodiments, the extension 32 and the positioning member 8 are provided with a first positioning structure for positioning the extension 32 and the positioning member 8. In some embodiments, the first positioning structure may include a first positioning section 321 and a second positioning section 810. The two first positioning sections 321 are disposed on the extension portion 32 and are respectively located at two opposite sides of the extension portion 32, and the two first positioning sections 321 are symmetrically disposed; the number of the second positioning sections 810 may be two, the two second positioning sections 810 are disposed on the inner wall of the positioning member 8 and are respectively located on two opposite sides of the positioning member 8, and the two second positioning sections 810 are disposed opposite to each other. The two second positioning tangential planes 810 and the two first positioning tangential planes 321 are arranged in one-to-one correspondence, and the positioning piece 8 and the probe core 3 can be attached when being installed, so that positioning is realized.

In some embodiments, the positioning member 8 and the housing 1 may be provided with a second positioning structure, and by providing the second positioning structure, the second positioning structure may be configured to position the detection direction of the probe core 3.

Specifically, in some embodiments, the second positioning structure may include at least one set of positioning grooves 811 and at least one set of positioning bosses 121. In this embodiment, the positioning grooves 811 may be two sets, and the positioning bosses 121 may be one set. In other embodiments, the positioning grooves 811 may be one set and the positioning bosses 121 may be two sets. In other embodiments, the positioning grooves 811 and the positioning bosses 121 may be two sets. Each set of positioning grooves 811 may include two positioning grooves 811 disposed opposite to each other, the two positioning grooves 811 being disposed symmetrically. The positioning grooves 811 of the two sets of positioning grooves 811 are equidistantly arranged. The positioning groove 811 may be substantially cylindrical, although it is understood that in other embodiments, the positioning groove 811 is not limited to being cylindrical, and may be rectangular, prismatic, or other irregular shapes. In some embodiments, the diameter of the positioning groove 811 may be selected to be 1-5mm. Further, the diameter of the positioning groove 811 may be 2mm. Each set of positioning bosses 121 may include two positioning bosses 121 disposed opposite each other, with the two positioning bosses 121 disposed opposite each other. Two positioning bosses 121 of each set of positioning bosses 121 may be located on an inner wall of the housing 1, which may be substantially cylindrical, the positioning bosses 121 corresponding to the shape of the positioning grooves 811. Two of the positioning grooves 811 of each set may be located on the inner wall of the positioning member 8. Each positioning boss 121 is matched with each positioning groove 811, and when the housing 1 is assembled with the positioning member 8 sleeved on the probe core 3, the positioning boss 121 can be clamped into the positioning groove 811.

In some embodiments, the two sets of positioning grooves 811 may be divided into a first set of positioning grooves 811 and a second set of positioning grooves 811; the first set of detent recesses 811 are disposed at 90 degrees to the second set of detent recesses 811. When the first set of positioning grooves 811 is mated with the positioning boss 121 of the housing 1, the beam angle of the probe core 3 in the first direction is large, and the beam angle in the second direction is small, wherein the first direction is perpendicular to the second direction. When the second set of positioning grooves 811 is fitted with the positioning boss 121 of the housing 1, the beam angle of the probe core 3 in the second direction is large, and the beam angle in the first direction is small.

In some embodiments, the positioning member 8 may have a marking structure 812 disposed thereon, and the marking structure 812 includes two bosses disposed on an end surface of the positioning member 8. The two bosses correspond to one of the sets of positioning grooves 811. In other embodiments, the two bosses may correspond to the first set of positioning grooves 811, and by observing the positions of the two bosses, the beam angle of the probe core 3 in the first direction is maximized when the directions of the two bosses are parallel to the first direction. When the directions of the two bosses are parallel to the second direction, the beam angle of the probe core 3 in the second direction is the largest.

In some embodiments, the ultrasonic sensor further comprises a protective sleeve 9, wherein the protective sleeve 9 is sleeved on the periphery of the probe core 3 and is attached to the fixed shell 7, so that the probe core 3 can be protected. After the protective sleeve 9 is sleeved on the ultrasonic sensor, the interior of the ultrasonic sensor can be completely filled and sealed by filling and sealing glue. The protection level of the ultrasonic sensor can reach more than IP67, and the tail part adopts a waterproof joint.

In some embodiments, the ultrasonic sensor further includes a metal housing 10, where the metal housing 10 is a protective cover, and the second opening 113 of the housing 1 is embedded in the housing 1 and can be covered on the outer periphery of the control motherboard 2. The metal cover 10 is provided with a card inserting structure 101, and the card inserting structure 101 can be inserted into a positioning hole 21 arranged on the control main board 2. The metal housing 10 is formed by bending metal plates, and can form a containing space on the inner side thereof for containing the control motherboard 2 and can be inserted into the shell 1 by bending. The metal housing 10 can effectively improve the interference resistance.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the utility model; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. An ultrasonic sensor, comprising:

A housing (1);

The probe core (3) is at least partially arranged in the shell (1);

A control main board (2) arranged in the shell (1);

Two first contact pins (5) which are arranged in the shell (1) and are inserted into the control main board (2);

An FPC connector (4) disposed in the housing (1); the FPC connecting piece (4) is connected with the probe core (3) and is used for leading out two electrodes of the probe core (3), and the FPC connecting piece (4) is connected with the two first contact pins (5).

2. The ultrasonic sensor according to claim 1, wherein the FPC connector (4) includes a first connection portion (41), a second connection portion (42) provided at one end of the first connection portion (41), and a third connection portion (43) provided at the other end of the first connection portion (41); the second connecting part (42) is connected with the probe core (3), and the third connecting part (43) is connected with the first contact pin (5).

3. The ultrasonic sensor according to claim 2, wherein the second connection portion (42) is provided bent with the first connection portion (41);

and/or the third connecting part (43) is bent with the first connecting part (41).

4. The ultrasonic sensor according to claim 1, characterized in that the probe core (3) comprises a first electrode and a second electrode;

The FPC connector (4) comprises a first conductive part connected with the first electrode, a second conductive part connected with the second electrode, a third conductive part connected with one first contact pin (5) and a fourth conductive part connected with the other first contact pin (5); the first conductive part is communicated with the third conductive part; the second conductive part is conducted with the fourth conductive part.

5. The ultrasonic sensor according to claim 4, further comprising a positioning member (8) for positioning the probe core (3) and the housing (1);

The positioning piece (8) is sleeved on at least part of the periphery of the probe core (3);

The probe core (3) comprises a main body part (31) and an extension part (32) arranged at one end of the main body part (31), wherein the extension part (32) extends outwards from the outer side wall of the main body part (31);

Part of the outer side wall of the main body part (31) is attached to the inner wall of the positioning piece (8);

the outer side wall of the extension part (32) is attached to the inner wall of the positioning piece (8).

6. The ultrasonic sensor according to claim 5, characterized in that the extension (32) and the positioning element (8) are provided with a first positioning structure;

The first positioning structure comprises a first positioning tangential plane (321) arranged on the extension part (32) and a second positioning tangential plane (810) arranged on the inner wall of the positioning piece (8); the first positioning tangential plane (321) is correspondingly arranged with the first positioning tangential plane (321) so as to be attached to the first positioning tangential plane (321).

7. The ultrasonic sensor according to claim 5, characterized in that the positioning element (8) and the housing (1) are provided with a second positioning structure configured to position the probe core (3) in a detection direction;

The second positioning structure comprises at least one group of positioning grooves (811) arranged on the outer side wall of the positioning piece (8) and at least one group of positioning bosses (121) arranged on the inner wall of the shell (1); each group of positioning grooves (811) comprises two symmetrically arranged positioning grooves (811); each group of positioning bosses (121) comprises two symmetrically arranged positioning bosses (121);

each positioning boss (121) is matched with each positioning groove (811).

8. The ultrasonic sensor according to claim 7, wherein the positioning grooves (811) are of two groups; the positioning grooves (811) in the two groups of positioning grooves (811) are equidistantly arranged;

And/or the number of the positioning bosses (121) is two, and the positioning bosses (121) in the two groups of the positioning bosses (121) are equidistantly arranged.

9. The ultrasonic sensor according to claim 1, further comprising a second pin (6), the second pin (6) being arranged in the housing (1) and being connected to the control motherboard (2) for connecting the control motherboard (2) to an external component.

10. The ultrasonic sensor according to claim 1, characterized in that the housing (1) comprises a first opening (123) and a second opening (113) arranged opposite to the first opening (123);

the probe core (3) partially penetrates out of the first opening (123);

The ultrasonic sensor further comprises a fixed shell (7), wherein the fixed shell (7) is sleeved on the shell (1) and is positioned at the first opening (123); a fixed structure is arranged between the shell (1) and the fixed shell (7);

And/or, the ultrasonic sensor further comprises a protective sleeve (9) sleeved on the periphery of the probe core (3);

And/or, the ultrasonic sensor further comprises a metal outer cover (10) sleeved on the periphery of the control main board (2), the metal outer cover (10) is embedded and installed in the shell (1), and the metal outer cover (10) comprises a card inserting structure (101) connected with the control main board (2).