Ultrasonic sensor

Abstract

The utility model relates to the technical field of ultrasonic sensors, in particular to an ultrasonic sensor, which comprises a sensor shell which is of a cylindrical structure and is provided with a BNC (bayonet nut connector), acoustic emission piezoelectric ceramics and a gain amplification plate. The locking unit is arranged on the outer side of the sensor shell and comprises a plurality of locking buckles, a fixing ring, a locking ring and a locking spring, and the locking buckles are evenly distributed around the axes of the locking buckles in the circumferential direction; each locking buckle comprises an elastic strip fixed to the fixing ring and a triangular clamping block fixed to the elastic strip, the triangular clamping blocks are located at the ends, away from the fixing ring, of the elastic strips, the fixing ring is fixed to the sensor shell, and the locking rings are arranged on the outer sides of the locking buckles in a sleeving mode. The locking spring is located between the fixing ring and the locking ring. The embodiment of the utility model has the advantage of quick assembly and disassembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic sensor technical field especially relates to an ultrasonic sensor. BACKGROUND

[0002] The ultrasonic sensor is a kind of device for measuring by ultrasonic wave, it measures by the way of emitting ultrasonic wave and receiving echo, because the penetration of ultrasonic wave to liquid, solid is very big, especially in the sunlight opaque solid, meet impurity or interface and can produce significant reflection and form reflected echo, meet active object and can produce Doppler effect, therefore, widely used in industry, national defense, biomedical etc.

[0003] Current ultrasonic sensor's installation mode has multiple, such as the installation version of welding by soldering, still such as Figure 1 As shown, by support installation to equipment, ultrasonic sensor is fixed to support by two nuts, then by bolt again the support is installed to equipment, this kind of installation mode exists the problem of inconvenient, at least two wrenches and a screwdriver are needed to prepare when installing, wrench is used to tighten nut, screwdriver is used to install support.Therefore, the present application provides an ultrasonic sensor. UTILITARY MODEL

[0004] The utility model aims at providing an ultrasonic sensor to solve the problem of inconvenient installation of current ultrasonic sensor.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] An ultrasonic sensor, the ultrasonic sensor includes:

[0007] Sensor shell, the sensor shell is cylindrical structure, BNC connector, sound emission piezoelectric ceramic, gain amplifier board are arranged on the sensor shell to generate and receive ultrasonic wave;

[0008] Locking unit arranged on the outer side of the sensor shell is used for locking sensor shell on support structure, the mounting hole for installing sensor shell is arranged on the support structure, the locking unit includes several locking buckles, fixed ring, locking ring and locking spring, several locking buckles are evenly distributed in the circumferential direction around the axis of the locking buckle, the locking buckle includes elastic strip fixed on the fixed ring and triangular clamping block fixed on the elastic strip, the triangular clamping block is located at the end of the elastic strip away from the fixed ring, the fixed ring is fixed on the sensor shell, the locking ring is sleeved on the outer side of several locking buckles, the locking spring is located between the fixed ring and the locking ring, and the two ends of the locking spring abut on the locking ring and the fixed ring.

[0009] Further, the surface of the sensor shell is also provided with a shell slot, and the locking buckle is located outside the shell slot.

[0010] Further, the locking buckle is provided with at least three.

[0011] Further, the fixing ring is provided with an adjusting ring away from one side of the locking spring, the adjusting ring is sleeved on the sensor shell, the adjusting ring can move along the axis of the sensor shell, and the fixing ring is fixedly connected with the adjusting ring.

[0012] Further, the adjusting ring is fixed to the outside of the sensor shell in a manner of interference fit, and the surface of the sensor shell is smooth.

[0013] Further, the outside of the sensor shell is provided with a mounting thread, the inside of the adjusting ring is provided with an internal thread, and the adjusting ring and the mounting thread are connected through threads.

[0014] Further, the sensor shell is also provided with a locking nut, the locking nut and the sensor shell are connected through threads, and the locking nut is sleeved on the sensor shell.

[0015] Further, the locking buckle is inclined inward, the inside of the locking ring is a tapered hole with one end having a large diameter and the other end having a small diameter, and the end with the large tapered diameter is close to the fixing ring.

[0016] Further, the sensor shell is a cylinder with openings at two ends, the two end portions of the sensor shell are fixedly connected with an insulating ceramic sheet and a rear plug respectively, and the insulating ceramic sheet is in contact with the acoustic emission piezoelectric ceramic.

[0017] Compared with the prior art, the ultrasonic sensor has the following beneficial effects:

[0018] The ultrasonic sensor disclosed in the embodiment is provided with a locking unit, the locking unit clamps the ultrasonic sensor on the support structure through the locking buckle and the locking ring, during installation, the locking unit only needs to be inserted into the mounting hole of the support structure, and the quickness of disassembly and assembly of the ultrasonic sensor is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of an ultrasonic sensor in the prior art.

[0020] Figure 2 It is a structural schematic view of the ultrasonic sensor disclosed in the embodiment of the utility model.

[0021] Figure 3 It is Figure 2 the front view.

[0022] Figure 4 For Figure 3 Cross-sectional view of A-A.

[0023] Figure 5 Structure diagram of a sensor shell in an ultrasonic sensor according to an embodiment of the present application.

[0024] Figure 6 Structure diagram of a locking unit in an ultrasonic sensor according to an embodiment of the present application.

[0025] Figure 7 Connection diagram of a locking buckle, a fixing ring and an adjusting ring in an ultrasonic sensor according to an embodiment of the present application.

[0026] Reference signs:

[0027] 10, sensor shell; 11, spring piece groove; 12, mounting thread; 20, insulating ceramic piece; 30, BNC connector; 40, sound emission piezoelectric ceramic; 50, gain amplification board; 60, locking unit; 61, locking buckle; 62, fixing ring; 63, adjusting ring; 64, locking ring; 65, locking spring; 66, locking nut; 70, rear plug. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] Figures 2 to 4 As shown in the drawings, an embodiment of the present application provides an ultrasonic sensor, which comprises:

[0030] A sensor shell 10, which is in a cylindrical structure, is provided with a BNC connector 30, a sound emission piezoelectric ceramic 40 and a gain amplification board 50 to generate and receive ultrasonic waves.

[0031] A locking unit 60 is arranged outside the sensor housing 10, and is used to lock the sensor housing 10 on a support structure, the support structure is provided with a mounting hole for mounting the sensor housing 10, the locking unit 60 comprises a plurality of locking buckles 61, a fixing ring 62, a locking ring 64 and a locking spring 65, the plurality of locking buckles 61 are uniformly distributed in the circumferential direction around the axis of the locking buckles 61, the locking buckle 61 comprises an elastic strip fixed on the fixing ring 62 and a triangular clamping block fixed on the elastic strip, the triangular clamping block is located at one end of the elastic strip away from the fixing ring 62, the fixing ring 62 is fixed on the sensor housing 10, the locking ring 64 is sleeved outside the plurality of locking buckles 61, and the locking spring 65 is located between the fixing ring 62 and the locking ring 64, and both ends of the locking spring 65 abut on the locking ring 64 and the fixing ring 62.

[0032] In the embodiment, when the ultrasonic sensor of the embodiment is installed, the triangular clamping block on the locking buckle 61 is inserted into the mounting hole of the support structure, so that the triangular clamping block passes through the mounting hole and is located on the other side of the mounting hole, at this time, the elastic strip on the locking buckle 61 is located in the mounting hole, the triangular clamping block and the locking ring 64 are located at both ends of the mounting hole, the locking spring 65 presses the locking ring 64 against the end of the mounting hole, the locking spring 65 applies a pushing force to the fixing ring 62 away from the mounting hole, so that the triangular clamping block and the locking ring 64 clamp the mounting hole, and then the ultrasonic sensor is fixed to the support structure, and the support structure is the support structure shown in the drawing, the working modes of the BNC connector 30, the sound emitting piezoelectric ceramic 40 and the gain amplification board 50 are prior art. Figure 1

[0033] The ultrasonic sensor disclosed in the embodiment is clamped on the support structure by the locking unit 60, the locking unit 60 clamps the ultrasonic sensor on the support structure through the locking buckle 61 and the locking ring 64, and when installed, the locking unit 60 only needs to be inserted into the mounting hole of the support structure, thereby improving the quickness of dismounting and mounting the ultrasonic sensor.

[0034] Specifically, in the embodiment, as shown in Figure 4 and Figure 5 ​As shown in the figure, the sensor shell 10 is a cylinder with openings at both ends, the BNC connector 30, the acoustic emission piezoelectric ceramic 40, and the gain amplification plate 50 are prior art, the acoustic emission piezoelectric ceramic 40, the gain amplification plate 50, and the locking unit 60 are sequentially electrically connected, the two end portions of the sensor shell 10 are respectively fixedly connected with the insulating ceramic sheet 20 and the rear plug 70 by adhesive means, the insulating ceramic sheet 20 is in contact with the acoustic emission piezoelectric ceramic 40, the rear plug 70 is a plastic structure, the rear plug 70 is provided to facilitate the installation of the insulating ceramic sheet 20, the BNC connector 30, the acoustic emission piezoelectric ceramic 40, and the gain amplification plate 50, and the BNC connector 30 is fixed to the sensor shell 10 by threaded connection;

[0035] As a preferred embodiment in the present embodiment, as shown in Figure 5 As shown in the figure, the surface of the sensor shell 10 is also provided with a sheet slot 11, the locking buckle 61 is located outside the sheet slot 11, when the locking buckle 61 is inserted into the mounting hole, the locking buckle 61 is bent, part of the locking buckle 61 is located in the sheet slot 11, the sheet slot 11 is used to avoid the locking buckle 61, thereby reducing the size of the locking unit 60, the sheet slot 11 is processed by stamping.

[0036] In the present embodiment, as shown in Figure 6 And Figure 7 As shown in the figure, the locking buckle 61 is provided with at least three, in the present embodiment, the locking buckle 61 is provided with four, the four locking buckles 61 are uniformly distributed around the axis of the sensor shell 10, the locking buckle 61 and the fixing ring 62 are fixedly connected by welding, or the locking buckle 61 and the fixing ring 62 are an integral structure;

[0037] As a preferred embodiment in the present embodiment, the fixing ring 62 is provided with an adjusting ring 63 away from one side of the locking spring 65, the adjusting ring 63 is sleeved on the sensor shell 10, the adjusting ring 63 can move along the axis of the sensor shell 10, and the fixing ring 62 is fixedly connected with the adjusting ring 63;

[0038] As a preferred embodiment in the present embodiment, the locking buckle 61 is inclined inward, the inner side of the locking ring 64 is a tapered hole with one end large in diameter and the other end small in diameter, the end with large tapered diameter is close to the fixing ring 62, when the ultrasonic sensor is removed, the locking ring 64 is pulled tight to the fixing ring 62, so that the fixing ring 62 extrudes the locking buckle 61 inward, thereby enabling the locking buckle 61 to be pulled out of the mounting hole;

[0039] In one of the embodiments of the present embodiment, the adjusting ring 63 can be fixed to the outside of the sensor shell 10 by interference fit, and in the case of applying sufficient external force, the adjusting ring 63 can be moved along the axis of the sensor shell 10, and the surface of the sensor shell 10 is smooth;

[0040] The matching mode of the sensor shell 10 and the adjusting ring 63 can also be other structures, such as another embodiment of the present embodiment, the outside of the sensor shell 10 is provided with a mounting thread 12, the inside of the adjusting ring 63 is provided with an internal thread, the adjusting ring 63 and the mounting thread 12 are connected by thread, when adjusting the axial position of the adjusting ring 63 on the sensor shell 10, the adjusting ring 63 can be rotated, and the sensor shell 10 is also provided with a locking nut 66, the locking nut 66 and the sensor shell 10 are connected by thread, the locking nut 66 is sleeved on the sensor shell 10, and the locking nut 66 is used to lock the adjusting ring 63 on the sensor shell 10.

[0041] The terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0042] It should be understood that although the terms first, second, third, etc. can be used in the present application to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, without departing from the scope of the present application, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon determining" or "in response to determining".

[0043] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic sensor, characterized by The ultrasonic sensor comprises: A sensor shell (10) in a cylindrical structure, wherein a BNC joint (30), an acoustic emission piezoelectric ceramic (40) and a gain amplification board (50) are arranged on the sensor shell (10) to generate and receive ultrasonic waves; A locking unit (60) arranged outside the sensor shell (10) is used to lock the sensor shell (10) on a support structure, wherein mounting holes for mounting the sensor shell (10) are arranged on the support structure, and the locking unit (60) comprises a plurality of locking buckles (61), a fixing ring (62), a locking ring (64) and a locking spring (65), the plurality of locking buckles (61) are uniformly distributed around the axis of the locking buckles (61), the locking buckle (61) comprises an elastic strip fixed on the fixing ring (62) and a triangular clamping block fixed on the elastic strip, the triangular clamping block is located at one end of the elastic strip away from the fixing ring (62), the fixing ring (62) is fixed on the sensor shell (10), the locking ring (64) is sleeved outside the plurality of locking buckles (61), and the locking spring (65) is located between the fixing ring (62) and the locking ring (64), and the two ends of the locking spring (65) abut against the locking ring (64) and the fixing ring (62).

2. The ultrasonic sensor of claim 1, wherein, The surface of the sensor shell (10) is further provided with a spring groove (11), and the locking buckle (61) is located outside the spring groove (11).

3. The ultrasonic sensor of claim 1, wherein, The locking buckle (61) is provided with at least three.

4. The ultrasonic sensor of claim 1, wherein, The side of the fixing ring (62) away from the locking spring (65) is provided with an adjusting ring (63), the adjusting ring (63) is sleeved on the sensor shell (10), the adjusting ring (63) can move along the axis of the sensor shell (10), and the fixing ring (62) is fixedly connected with the adjusting ring (63).

5. The ultrasonic sensor of claim 4, wherein, The adjusting ring (63) is fixed to the outside of the sensor shell (10) in an interference fit manner, and the surface of the sensor shell (10) is smooth.

6. The ultrasonic sensor of claim 4, wherein, The outside of the sensor shell (10) is provided with a mounting thread (12), the inside of the adjusting ring (63) is provided with an internal thread, and the adjusting ring (63) and the mounting thread (12) are connected through threads.

7. The ultrasonic sensor of claim 6, wherein, The sensor shell (10) is further provided with a locking nut (66), the locking nut (66) and the sensor shell (10) are connected through threads, and the locking nut (66) is sleeved on the sensor shell (10).

8. The ultrasonic sensor according to any one of claims 1 to 7, characterized in that The locking buckle (61) is inclined inward, the inside of the locking ring (64) is a tapered hole with one end large in diameter and the other end small in diameter, and the end with the large tapered diameter is close to the fixing ring (62).

9. The ultrasonic sensor according to any one of claims 1 to 7, characterized in that The sensor shell (10) is a cylinder with openings at both ends, and the sensor shell (10) is fixedly connected with an insulating ceramic sheet (20) and a rear plug (70) at the two end ports respectively, and the insulating ceramic sheet (20) is in contact with the acoustic emission piezoelectric ceramic (40).

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