Underwater distance measuring sensor convenient to install

Abstract

The utility model relates to an underwater distance measuring sensor convenient to install. The underwater distance measuring sensor comprises a shell, a piezoelectric ceramic piece, a driving circuit board and a rear cover. The piezoelectric ceramic piece is adhered to the inner wall of the front end of the shell; the driving circuit board is arranged in the shell and is electrically connected with the piezoelectric ceramic piece; the rear cover covers the rear end of the shell; a through hole is formed in the center of the rear cover; a lead on the driving circuit board penetrates through the through hole in the center of the rear cover; a limiting ring is fixed to the outer portion of the shell, an outer thread area is arranged on the outer wall, located between the limiting ring and the rear end of the shell, of the shell, and the outer thread area is sleeved with a nut. The shell is filled with epoxy resin glue. According to the utility model, the quick installation with an installation part can be realized, and the disassembly is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, especially underwater ranging sensor convenient to install. BACKGROUND

[0002] The underwater ranging sensor utilizes the propagation and reflection characteristics of sound waves in water to calculate the distance by measuring the round-trip time of sound waves. For example, the underwater ranging sensor can detect the environmental conditions within a certain range, helping the pool cleaning robot to navigate and plan the cleaning route.

[0003] At present, the underwater ranging sensor is relatively cumbersome in the installation process, which affects its use. When the installation position is not accurate, it is also troublesome to disassemble.

[0004] Therefore, it is necessary to provide an underwater ranging sensor convenient to install, so as to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a kind of underwater ranging sensors convenient to install, can realize its quick installation with installation part, and disassembly is convenient.

[0006] To achieve the above utility model purposes, a kind of underwater ranging sensor convenient to install is provided, including shell, piezoelectric ceramic sheet, drive circuit board and back cover;

[0007] The piezoelectric ceramic sheet is bonded to the inner wall of the front end of the shell;

[0008] The drive circuit board is arranged in the shell and is electrically connected with the piezoelectric ceramic sheet;

[0009] The back cover covers the rear end of the shell;

[0010] The center of the back cover is provided with a through hole, and the lead wire on the drive circuit board passes through the through hole in the center of the back cover;

[0011] The limit ring is fixed on the outside of the shell, the outer thread area is provided on the outer wall of the shell between the limit ring and the rear end of the shell, and the nut is sleeved on the outer thread area.

[0012] The shell is filled with epoxy resin glue.

[0013] Preferably, the outer thread area between the limit ring and the nut is also sleeved with a gasket.

[0014] Preferably, the front end of the shell has an opening, and the front cover is covered on the opening.

[0015] Further, the inner wall bottom of the front cover is provided with a plurality of limiting columns.

[0016] Further, the side inner wall of the front cover is provided with a plurality of limiting protrusions in an annular array manner.

[0017] Preferably, the side wall of the nut is provided with a plurality of concave-convex patterns.

[0018] Preferably, the rear cover is provided with an exhaust hole on both sides of the driving circuit board.

[0019] Compared with the prior art, the underwater distance measuring sensor convenient to install has the advantages that:

[0020] (1) Through structural optimization, a limiting ring is arranged on the shell, an outer thread area is arranged on the outer wall between the limiting ring and the rear end of the shell, and a nut is sleeved on the outer thread area. When the underwater distance measuring sensor is installed, the shell on the sensor is passed through the plate of the installation part, and then the nut is tightened to quickly fix the underwater distance measuring sensor.

[0021] (2) Simple structure and convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is an exploded view of the underwater distance measuring sensor convenient to install of the embodiment;

[0023] Figure 2 It is a structural schematic view of the underwater distance measuring sensor convenient to install after removing the wires in the embodiment;

[0024] Figure 3 It is a structural schematic view of the underwater distance measuring sensor convenient to install of the embodiment;

[0025] Figure 4 It is a structural schematic view of the front cover in the embodiment;

[0026] Figure 5 It is a structural schematic view of the rear cover in the embodiment. DETAILED DESCRIPTION

[0027] The utility model is further described below in combination with the drawings and specific embodiments.

[0028] EMBODIMENT

[0029] As shown in Figure 1 and Figure 2 , the underwater distance measuring sensor convenient to install of the embodiment comprises a shell 1, a piezoelectric ceramic sheet 2, a driving circuit board 3 and a rear cover 4.

[0030] The piezoelectric ceramic sheet 2 is bonded to the inner wall of the front end of the shell 1; the driving circuit board 3 is arranged in the shell 1 and is electrically connected to the piezoelectric ceramic sheet 2; the rear cover 4 covers the rear end of the shell 1; the center of the rear cover 4 is provided with a through hole, as shown in Figure 3 , the lead wire 5 on the driving circuit board 3 passes through the through hole in the center of the rear cover 4.

[0031] The limiting ring 6 is fixed to the outside of the shell 1, the outer thread area 7 is arranged on the outer wall of the shell 1 between the limiting ring 6 and the rear end of the shell 1, and the nut 8 is sleeved on the outer thread area 7.

[0032] The shell 1 is filled with epoxy resin glue.

[0033] When the underwater distance sensor is installed, the shell 1 on the sensor is passed through the plate of the installation part, and then the nut 8 is tightened to fix the underwater distance sensor. When working, the driving circuit board 3 sends intermittent 1MHZ pulses to drive the piezoelectric ceramic sheet 2 of the sensor head, the ultrasonic wave generated by the piezoelectric ceramic sheet 2 is transmitted forward through water as a medium, if the sound wave encounters an object, it will be reflected back, the piezoelectric ceramic sheet 2 of the sensor head detects the ultrasonic wave and converts it into an electric signal to the single-chip microcomputer on the driving circuit board 3, the single-chip microcomputer calculates the distance of the obstacle by a specific algorithm using the time of the transmission pulse and the received echo electric signal. The sensor circuit module transmits the distance signal to the final device through the communication interface of the sensor for processing.

[0034] In this embodiment, the outer thread area 7 is sleeved with a gasket 9 between the limiting ring 6 and the nut 8, which better fixes the sensor.

[0035] In this embodiment, the front end of the shell 1 has an opening, and the front cover 10 is covered on the opening. When assembling, the piezoelectric ceramic sheet 2 can be bonded to the inner wall of the front cover 10 first, and then the front cover 10 is covered on the opening of the front end of the shell 1, which facilitates the mounting of the piezoelectric ceramic sheet 2.

[0036] Further, in this embodiment, as shown in Figure 4 , the inner wall of the front cover 10 is provided with a plurality of limiting columns 11 at the bottom; in this way, the height of the limiting columns 11 can effectively control the depth of the glue, and ensure that the piezoelectric ceramic sheet 2 can be stably bonded to the inner wall of the front cover 10, and the depth of the glue will not affect the normal work of the piezoelectric ceramic sheet 2.

[0037] In this embodiment, the side inner wall of the front cover 10 is provided with a plurality of limiting protrusions 12 in a ring array; in this way, the piezoelectric ceramic sheet 2 can be effectively limited when mounted, so that the center of the piezoelectric ceramic sheet 2 coincides with the center of the front cover 10.

[0038] In the embodiment, the side wall of the nut 8 is provided with a plurality of concave-convex patterns 13, which are convenient for the worker to hold.

[0039] In the embodiment, as shown in the figure, the rear cover 4 is provided with exhaust holes 14 on both sides of the driving circuit board 3; after the shell 1 is filled with epoxy resin glue, the rear cover 4 is covered, and the wires 5 of the driving circuit board 3 pass through the through hole in the center of the rear cover 4; then the assembled sensor is put into the curing equipment for curing, and the air in the shell is effectively exhausted from the exhaust holes 14 during the curing process of the epoxy resin glue. Figure 5

[0040] The preferred embodiments of the utility model have been specifically described above, but the utility model is not limited to the described embodiments, and those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the utility model, and these equivalent modifications or replacements are all included in the range defined by the claims of the present application.​

Claims

1. A conveniently installed underwater ranging sensor, characterized by, The shell, piezoelectric ceramic sheet, drive circuit board and back cover are included; The piezoelectric ceramic sheet is bonded to the inner wall of the front end of the shell; The drive circuit board is arranged in the shell and electrically connected with the piezoelectric ceramic sheet; The back cover covers the rear end of the shell; The center of the back cover is provided with a through hole, and the lead wire on the drive circuit board passes through the through hole in the center of the back cover; The outer wall of the shell between the limiting ring and the rear end of the shell is provided with an external thread area, and the external thread area is sleeved with a nut; The shell is filled with epoxy resin glue.

2. A conveniently installed underwater ranging sensor as claimed in claim 1, wherein, The external thread area between the limiting ring and the nut is also sleeved with a gasket.

3. A conveniently installed underwater ranging sensor as claimed in claim 1, wherein, The front end of the shell has an opening, and the opening is covered with a front cover.

4. A conveniently installed underwater ranging sensor as claimed in claim 3, wherein, The inner wall of the front cover is provided with a plurality of limiting columns at the bottom.

5. A conveniently installed underwater ranging sensor as claimed in claim 3 or 4, wherein, The side inner wall of the front cover is provided with a plurality of limiting protrusions in an annular array manner.

6. A conveniently installed underwater ranging sensor as claimed in claim 1, wherein, The side wall of the nut has a plurality of concave-convex patterns.

7. A conveniently installed underwater ranging sensor as claimed in claim 1, wherein, The back cover is provided with exhaust holes on both sides of the drive circuit board.

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