JP3180034U - Ultrasonic sensor device - Google Patents

Abstract

An ultrasonic sensor device is provided that suppresses the use of a lead wire for electrical connection of each member, thereby reducing work time and manufacturing cost.
A hollow housing 4 in which first, second and third openings 411, 413 and the like are respectively formed, a circuit board 8 fixed in the first opening 411, and a second opening are provided. The sensor unit 5 is fixed, two signal pins 43 and the like, two ground pins 44 and the like, and a power supply pin 46 are provided.
[Selection] Figure 5

Description

  The present invention relates to an ultrasonic sensor device, and more particularly to an ultrasonic sensor device that suppresses the use of a lead wire for electrical connection of each member.

  In a conventional ultrasonic sensor, for example, as shown in FIG. 1 (Patent Document 1) and FIG. 2 (Patent Document 2), a lead wire 33 is used to connect the piezoelectric element 31 and the circuit board 32 of the sensor unit 3. The lead wire 33 and the piezoelectric element 31 and the circuit board 32 are electrically connected by soldering.

Chinese Patent Application No. 101258772 Chinese Patent Application Publication No. 1010555312

  As described above, in the conventional ultrasonic sensor, for example, both ends of the lead wire 33 must be connected to the piezoelectric element 31 and the circuit board 32 by soldering. Manufacturing costs are high.

  In view of the above-described conventional problems, the present invention provides an ultrasonic sensor device in which working time and manufacturing cost are reduced by suppressing the use of lead wires for electrical connection of each member.

  In order to achieve the above object, the present invention is directed to a tube body having first and second openings facing in opposite directions at both ends in a direction different from the direction in which the first and second openings face. A hollow housing further formed with a branch pipe having a third opening at the tip, a circuit board fixed in the first opening of the hollow housing, A bottom plate which is fixed in the second opening and is disposed outside the second opening so that one surface faces the second opening, and the second opening from the periphery of the bottom plate A sensor unit comprising a peripheral wall extending inward and a piezoelectric element attached to one surface facing the inside of the second opening of the bottom plate, and one end extending to the inner side of the peripheral wall. It is electrically connected to the element and the other end is The first signal pin inserted into the circuit board and one end thereof are inserted into the circuit board, and the other end extends through the tube wall of the hollow housing and then into the branch pipe. A second signal pin for transferring a signal from the circuit board to the outside; a first ground pin having one end inserted into the peripheral wall and the other end inserted into the circuit board; and one end inserted into the circuit board. A second grounding pin that is inserted into the branch pipe after the other end is inserted through the tube wall of the hollow housing and one end is inserted into the circuit board, and the other end is the hollow housing. There is provided an ultrasonic sensor device comprising: a power supply pin that extends through the tube wall from the tube body and then extends into the branch tube and supplies electric power from the outside to the circuit board.

  The ultrasonic sensor device preferably further includes a fixing seat that is interposed between the second opening and the sensor unit and fixes the sensor unit to the hollow housing. In the ultrasonic sensor device, the fixed seat is fixed in the second opening, and the first annular portion surrounding a portion extending into the second opening of the peripheral wall; It is preferable to include a second annular portion that surrounds a portion of the peripheral wall that extends out of the second opening and that abuts against the first annular portion.

  The ultrasonic sensor device preferably includes a cover that covers the first opening.

  In the ultrasonic sensor device, the first and second openings face in opposite directions, and the hollow housing has the first and second openings at both ends. A branch pipe is further formed in the pipe body, branching in a direction different from the direction in which the first and second openings face, and having a third opening at the tip. A second end that is inserted into the circuit board and the other end extends through the tube wall from the inside of the hollow housing and then into the branch pipe to transfer a signal from the circuit board to the outside. One end of the signal pin and the other end of the signal pin are inserted into the circuit board, and the other end is inserted through the tube wall of the hollow housing and then extended into the branch pipe to supply electric power from the outside to the circuit board. Power pin and one end Is inserted into the road substrate, it is preferable that the other end is further provided with a second ground pin that extends into the branch pipe from the inserted pipe wall from the tube body of the hollow housing.

  In the ultrasonic sensor device, it is preferable that a space defined by the peripheral wall and the bottom plate of the sensor unit is filled with an electrically insulating material.

  In the ultrasonic sensor device, the inside of the hollow housing is preferably filled with an electrically insulating material.

  With the above configuration, the present invention completes the electrical connection by inserting signal pins and ground pins into the peripheral walls of the circuit board and sensor unit. Therefore, the use of lead wires and soldering can be suppressed to reduce work time and manufacturing. Cost can be reduced.

It is a partial cross section by which an example of the electrical connection of the conventional ultrasonic sensor apparatus is shown. It is a partial cross section by which other examples of the electrical connection of the conventional ultrasonic sensor apparatus are shown. It is an exploded view of the ultrasonic sensor device of the present invention. It is a top view in the state where the ultrasonic sensor device of the present invention was assembled and the cover was removed. It is sectional drawing cut along the AA line in FIG. It is sectional drawing cut along the BB line in FIG. It is sectional drawing cut along the CC line in FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

  3 is an exploded view of the ultrasonic sensor device of the present invention, FIG. 4 is a plan view of the ultrasonic sensor device assembled and the cover is removed, and FIG. 5 is cut along line AA in FIG. 6 is a cross-sectional view taken along the line BB in FIG. 4, and FIG. 7 is a cross-sectional view taken along the line CC in FIG.

  As shown in the drawing, the ultrasonic sensor device of the present invention includes a hollow housing 4 in which a first opening 411 and a second opening 412 are formed at both ends, and a first opening 411 of the hollow housing 4. And the sensor unit 5 fixed to the second opening 412 of the hollow housing 4.

  The hollow housing 4 is a tubular body in which the first opening 411 and the second opening 412 face in opposite directions at both ends, and the tubular body further includes a first opening 411 and a hollow opening 4. A branch pipe 42 is formed which branches in a direction different from the direction in which the first opening 411 and the second opening 412 face each other and has a third opening 413 opened at the tip.

  As shown in FIG. 5, the sensor unit 5 includes a bottom plate 52 disposed outside the second opening 412 so that one surface faces the second opening 412 (see FIG. 3), and the bottom plate 52. A peripheral wall 51 extending into the second opening 412 from the periphery of the base plate 52 and a piezoelectric element 54 attached to one surface of the bottom plate 52 facing the inside of the second opening 412.

  Further, as shown in FIG. 3, the ultrasonic sensor device of the present invention is fixed in the second opening 412 of the hollow housing 4 and the second opening of the peripheral wall 51 included in the sensor unit 5. A first annular portion 61 that surrounds a portion that extends into 412, and a second portion that surrounds a portion that extends outside the second opening 412 of the peripheral wall 51 and abuts against the first annular portion 61. And the fixed seat 6 is interposed between the second opening 412 of the hollow housing 4 and the sensor unit 5, and the sensor unit 5 is disposed in the hollow housing. 4 and the bottom plate 52 of the sensor unit 5 is exposed.

  As shown in FIG. 5, the hollow housing 4 is formed with a first flange 414 protruding from the peripheral edge toward the center inside the second opening 412. The first annular portion 61 is made of a flexible material, and is formed so that a locking hook 611 protrudes from the upper surface 610 thereof, and the upper surface 610 is formed on the first flange 414. At the same time, the locking hook 611 is hooked on the first flange 414 and is locked and fixed in the second opening 412.

  As shown in FIG. 6, the sensor unit 5 is formed with a second flange 57 protruding from the peripheral wall 51. The second flange 57 is fitted in a locking groove 64 formed inside the first annular portion 61 and locks the sensor unit 5 to the first annular portion 61.

  Further, a cover 9 that covers the first opening 411 and the circuit board 8 is fixed on the first opening 411 side.

  Further, in the present invention, five thick connection pins inserted into the first to fifth connection holes 81 to 85 formed in the circuit board 8 are used instead of the lead wires. That is, one end extends to the inside of the peripheral wall and is electrically connected to the piezoelectric element 54, and the other end is inserted into the first connection hole 81 of the circuit board 8, and one end is The first ground pin 44 is inserted into the peripheral wall 51 and the other end is inserted into the second connection hole 82 of the circuit board 8, and one end is inserted into the third connection hole 83 of the circuit board 8. The other end of the hollow housing 4 passes through the tube wall 41 of the hollow housing 4 and then extends into the branch tube 42 to transfer the signal from the circuit board 8 to the outside. The other end of the board 8 is inserted into the fourth connection hole 84 and the other end of the hollow housing 4 is inserted through the pipe wall 41 and then into the branch pipe 42. The power supply pin 46 to be supplied and one end is inserted into the fifth connection hole 85 of the circuit board 8 and the other end A second ground pin 47 from the tube body of the hollow housing 4 are extended from the insertion of the tube wall 41 into the branch pipe 42, further comprising a.

  For example, when the ultrasonic sensor device of the present invention is applied to an automobile, the second signal pin 45, the power supply pin 46, and the second ground pin 47 send a measurement signal from the circuit board 8 to the automobile, The vehicle can be supplied with power or grounded via the vehicle.

  As shown in FIG. 5, the first signal pin 43 that electrically connects the piezoelectric element 54 and the circuit board 8 is connected to the piezoelectric element 54 by wire bonding. It is also possible to employ a method of connection by direct contact.

  Furthermore, the inside of the ultrasonic sensor device of the present invention, that is, the space 53 defined by the peripheral wall 51 and the bottom plate 52 of the sensor unit 5 and the inner space 40 surrounded by the tube wall 41 of the hollow housing 4 are gel-like electricity. Filled with static insulating material.

  The above description is merely an example of the present invention, and the present invention is not limited thereto. For example, the fixed seat 6 and the cover 9 can be omitted.

  With the above configuration, the present invention completes the electrical connection by inserting signal pins and ground pins into the peripheral walls of the circuit board and sensor unit. Therefore, the use of lead wires and soldering can be suppressed to reduce work time and manufacturing. Cost can be reduced.

4 hollow housing 411 first opening 412 second opening 413 third opening 414 first flange 42 branch pipe 43 first signal pin 44 first ground pin 45 second signal pin 46 power supply pin 47 second Grounding pin 5 sensor unit 51 peripheral wall 52 bottom plate 54 piezoelectric element 57 second flange 6 fixing seat 61 first annular portion 610 upper surface 611 locking hook 62 second annular portion 64 locking groove 8 circuit board 81 first Connection hole 82 Second connection hole 83 Third connection hole 84 Fourth connection hole 85 Fifth connection hole 9 Cover

Claims (6)

A tubular body having first and second openings facing in opposite directions at both ends branches in a direction different from the direction in which the first and second openings face, and a third opening is formed at the tip. A hollow housing in which an open branch pipe is further formed;
A circuit board fixed in the first opening of the hollow housing;
A bottom plate that is fixed in the second opening of the hollow housing, and is disposed outside the second opening so that one surface faces the second opening; A sensor unit comprising a peripheral wall extending into the second opening, and a piezoelectric element attached to one surface facing the inside of the second opening of the bottom plate;
A first signal pin having one end extending to the inside of the peripheral wall and electrically connected to the piezoelectric element, and the other end inserted into the circuit board;
A second signal pin having one end inserted into the circuit board and the other end extending through the tube wall from the inside of the hollow housing and into the branch pipe to transfer a signal from the circuit board to the outside; ,
A first ground pin having one end inserted into the peripheral wall and the other end inserted into the circuit board;
A second grounding pin having one end inserted into the circuit board and the other end extending through the tube wall from the hollow housing tube and into the branch tube;
One end is inserted into the circuit board, and the other end is inserted into the branch pipe from the tube body of the hollow housing and then extended into the branch pipe, and a power supply pin for supplying electric power from the outside to the circuit board, An ultrasonic sensor device comprising:   The ultrasonic sensor device according to claim 1, further comprising a fixing seat that is interposed between the second opening and the sensor unit and fixes the sensor unit to the hollow housing.   The fixed seat is fixed in the second opening, and includes a first annular portion surrounding a portion extending into the second opening of the peripheral wall, and the second opening of the peripheral wall. The ultrasonic sensor device according to claim 2, further comprising: a second annular portion that surrounds a portion extending outward and is in contact with the first annular portion.   The ultrasonic sensor device according to claim 1, further comprising a cover that covers the first opening.   The ultrasonic sensor according to claim 1, wherein a space defined by the peripheral wall and the bottom plate of the sensor unit is filled with an electrically insulating material. apparatus.   The ultrasonic sensor device according to claim 1, wherein an inner side of the hollow housing is filled with an electrically insulating material.

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