JP2007285919A - Sensor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To detect accurately information which is a detection object, even in a severe using environment to which vibration or the like is applied. <P>SOLUTION: This sensor device is equipped with a resistor substrate 11 having a resistor pattern 11a formed on one surface; a slider 10a arranged oppositely to the resistor pattern 11a and slid on the resistor pattern 11a; a cover 2 for sealing a storage part 7 for storing the resistor substrate 11 and the slider 10a in a casing 1; and a pressing member 16 disposed between the resistor substrate 11 and the cover 2, for pressing the resistor substrate 11 to the slider 10a side. The device has a characteristic wherein the pressing member 16 presses a domain corresponding to the resistor pattern 11a on the resistor substrate 11 from the back. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sensor device, and more particularly, to a sensor device that is mounted in an automobile, a motorcycle, or the like and is used in an environment where vibration or the like accompanying traveling is applied.

2. Description of the Related Art Conventionally, sensor devices mounted on automobiles, motorcycles, and the like are configured to withstand various situations such as generation of vibrations associated with traveling and infiltration of water droplets. For example, in a sensor device that detects the rotation angle of a throttle valve of an automobile, a rotating body that rotates together with a drive shaft connected to a rotating shaft of the throttle valve, etc. in a casing, and a slide fixed to the rotating body. It has been proposed to store a resistor substrate on which a resistor pattern or the like on which a moving piece elastically contacts is formed, and seal these by fitting a cover member into a casing (for example, see Patent Document 1). . In such a sensor device, the resistor substrate is pressed to the rotating body side so that the slider piece can properly slide on the resistor pattern by the end of the cover member fitted into the casing.
JP 2002-39788 A

  However, in the conventional sensor device as described above, the shape of the cover member or the like may be deformed with temperature change or aging change according to the use environment. When the shape of the cover member or the like is deformed as described above, a situation may occur in which the resistor substrate resonates when vibration is applied to the sensor device. As a result, when the resistor substrate and the slider piece slide slightly, the slider piece is worn, and information (here, the rotation angle) to be detected cannot be detected. There's a problem.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide a sensor device that can accurately detect information to be detected even in a severe use environment in which vibration or the like is applied.

  The sensor device according to the present invention includes a substrate having a resistor pattern formed on one surface thereof, a slider that is disposed to face the resistor pattern and slides on the resistor pattern, and the substrate in the housing of the device. And a cover member that seals a space for housing the slider, and a pressing member that is disposed between the substrate and the cover member and presses the substrate toward the slider, the pressing member being A region corresponding to the resistor pattern on the substrate is pressed from the back surface.

  According to this structure, when sealing the space in a housing | casing with a cover member, a press member presses a board | substrate to a slider side. For this reason, even in a harsh usage environment where vibration or the like is applied, the vibration of the substrate can be suppressed and the wear generated on the slider can be prevented, so that the information to be detected can be detected with high accuracy. In particular, since the pressing member presses the region corresponding to the resistor pattern from the back surface, it is possible to effectively prevent the vibration of the substrate that causes the wear of the slider.

  In the sensor device, the pressing member may be held on a surface of the cover member that faces the substrate. In this case, the substrate can be pressed toward the slider by the pressing member only by performing the work of attaching the cover member to the housing, so that the efficiency in assembling the sensor device can be achieved.

  For example, the pressing member is preferably made of an elastic member. In this case, the elasticity of the elastic member makes it possible to appropriately press the substrate toward the slider while absorbing vibrations associated with traveling.

  In the sensor device, an opening is provided in the cover member in the vicinity of the inner wall of the housing, and the cover member is bonded and fixed to the inner wall of the housing. At the same time, the cover member and the substrate are connected through the opening. You may make it adhere and fix. In this case, since the cover member and the substrate are bonded and fixed simply by bonding and fixing the cover member to the housing, the integrity of the housing, the cover member and the substrate can be improved, and the substrate can be more effectively used. Can be suppressed.

  In particular, in the sensor device, it is preferable that the opening is provided in the vicinity of a region corresponding to the resistor pattern on the substrate. As described above, the opening is provided in the vicinity of the region corresponding to the resistor pattern on the substrate, and the housing, the cover member, and the substrate are integrated, thereby effecting the vibration of the substrate that causes the wear of the slider. Can be prevented.

  Further, the sensor device of the present invention includes a substrate having a resistor pattern formed on one surface thereof, a slider that is disposed to face the resistor pattern and slides on the resistor pattern, and a housing in the housing of the device. A cover member that seals a space for housing the substrate and the slider, and an opening is provided in the vicinity of the inner wall of the housing in the cover member, and at the same time the cover member is adhesively fixed to the inner wall of the housing. The cover member and the substrate are bonded and fixed through an opening.

  According to this configuration, since the cover member and the substrate are bonded and fixed through the opening formed in the cover member simply by bonding and fixing the cover member to the housing, the case, the cover member, and the substrate are integrated. It becomes possible to improve the nature. As a result, it is possible to suppress the vibration of the substrate and prevent the wear generated on the slider even in a severe use environment where vibration or the like is applied, so that the information to be detected can be accurately detected.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the sensor apparatus which can detect the information used as a detection target accurately also in the severe use environment where a vibration etc. apply.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the following, a case will be described in which the sensor device according to the present invention is applied to an electric shift change sensor (hereinafter referred to as “shift change sensor”) mounted in an automobile or the like. However, the sensor device according to the present invention is not limited to this, and can also be applied to sensors that detect other detection targets.

  FIG. 1 is a top view of a shift change sensor to which the sensor device according to the present embodiment is applied. FIG. 2 is a diagram for explaining a configuration of a cover included in the shift change sensor according to the present embodiment. 2A shows a top view of the cover, FIG. 2B shows a side view of the cover, and FIG. 2C shows a back view of the cover.

  The shift change sensor according to the present embodiment detects the rotation angle of the drive shaft that rotates according to the shift change operation by the operator, and detects the presence or absence of the shift change according to the rotation angle. .

  As shown in FIG. 1, the shift change sensor according to the present embodiment includes a casing 1 that internally includes a storage unit that stores a rotating body and a resistor substrate, which will be described later, and a casing 1 that covers the space in the storage unit. And a cover 2 for sealing. The casing 1 and the cover 2 are made of, for example, a synthetic resin material and are formed by molding.

  As shown in FIG. 1, the casing 1 is provided with arms 3 a and 3 b that extend laterally from a storage portion (not shown) on which the cover 2 is placed. Both arm portions 3a and 3b are formed with holes 4a and 4b for fixing the shift change sensor to the engine. The shift change sensor is fixed to the engine by screwing the holes 4a and 4b through the collars 5a and 5b.

  Further, below the housing portion, a connector housing portion 6 in which an output terminal (described later) for outputting signals from the shift change sensor to a control device that performs various controls in the automobile is provided. . In addition, the connector accommodating part 6 has the shape which the lower side shown in FIG. 1 opened so that the connector by the side of a control apparatus could be accommodated (refer FIG. 5).

  As shown in FIGS. 2 (a) and 2 (b), the cover 2 has a flat portion 21 on the upper side (front side shown in the figure) of the apparatus, and outward from the end of the flat portion 21. It has a slope portion 22 that gently slopes downward (back side shown in the figure). The upper side part shown in FIG. 2 in the slope part 22 is formed in circular arc shape. Notches 23a and 23b as openings are formed at predetermined positions of the arc-shaped portion. The notches 23a and 23b are formed to enhance the integrity of the cover 2, the resistor substrate, and the casing 1, as will be described later. The slope portions 22 corresponding to these notches 23 a and 23 b have a larger inclination angle than the other slope portions 22.

  In the present embodiment, notches 23a and 23b are formed at predetermined positions of the cover 2 to increase the integrity of the cover 2, the resistor substrate, and the casing 1. However, the shape of the cover 2 is not limited to this, and can be changed as appropriate. An opening of any shape may be formed in the cover 2 as long as the integrity of the cover 2, the resistor substrate, and the casing 1 can be enhanced.

  On the back side of the cover 2, ribs 24 that reinforce the cover 2 are provided as shown in FIG. Two ribs 24 are provided in the vertical and horizontal directions so as to connect the slope portions 22 facing each other (24a, 24b, 24c and 24d). By reinforcing the cover 2 with the ribs 24 as described above, the cover 2 is prevented from being deformed due to a temperature change or the like during traveling.

  A pressing member holding portion 25 is provided between the rib 24a and the rib 24b and at a position between the rib 24c and the slope portion 22 having an arc shape. The pressing member holding unit 25 holds a pressing member (not shown) that presses the resistor substrate disposed to face the cover 2 in the storage unit.

  The pressing member holding part 25 is provided with holding pieces 25a to 25c having a hemispherical shape inside the opposite sides. The pressing member holding part 25 sandwiches and holds the pressing member between the holding sides 25a to 25c. By holding the pressing member on the surface of the cover 2 facing the resistor substrate in this way, the resistor substrate can be pressed toward the rotating body by the pressing member only by performing the operation of attaching the cover 2 to the casing 1. Therefore, it is possible to improve efficiency when assembling the sensor device.

  The pressing member that presses the resistor substrate is made of an elastic member such as rubber. The shape of the pressing member is preferably a plate shape having a large contact area with the resistor substrate. However, the shape of the pressing member is not limited to this, and can be appropriately changed. By configuring the pressing member with an elastic member in this way, it is possible to appropriately press the resistor substrate toward the slider side while absorbing the vibration associated with traveling by the elasticity of the elastic member.

  In the present embodiment, the case where the resistor substrate is pressed with a pressing member made of an elastic material such as rubber is shown. However, the configuration of the pressing member is not limited to this, and can be appropriately changed. For example, instead of an elastic member made of rubber or the like, the resistor substrate may be pressed by a leaf spring.

  Here, the internal configuration of the shift change sensor according to the present embodiment will be described with reference to FIGS. 3-5 is a figure for demonstrating the internal structure of the shift change sensor which concerns on this Embodiment. 3 shows a cross-sectional view when viewed from the direction of arrow A in the dotted line portion shown in FIG. 1, and FIG. 4 is a plan view when the cover and resistor board of the shift change sensor according to the present embodiment are removed. FIG. 5 shows a plan view when the resistor substrate is viewed from the lower surface side.

  As shown in FIG. 3, in the casing 1, a storage portion 7 is disposed on the left side of the cover 2 shown in FIG. Further, the casing 1 is formed with a through hole 9 into which a drive shaft 8 that rotates in response to a shift change operation by an operator is inserted. A rotating body 10 that rotates according to the rotation of the drive shaft 8 is fixed to the tip end of the drive shaft 8 that protrudes toward the storage portion 7 through the through hole 9. The resistor substrate 11 is disposed opposite to the right side of the rotating body 10 shown in FIG. A leaf spring 12 as an urging means for urging the rotator 10 toward the resistor substrate 11 is disposed between the rotator 10 and the casing 1.

  As shown in FIGS. 3 and 4, a slider 10 a is fixed to the surface of the rotating body 10 on the side of the resistor substrate 11. On the other hand, as shown in FIG. 5, a resistor pattern 11a and a conductor pattern 11b are formed on the surface of the resistor substrate 11 on the rotating body 10 side. The slider 10a fixed to the rotating body 10 is configured in a brush shape. The slider 10a arranged on the upper side shown in FIG. 4 slides on the resistor pattern 11a, and the slider 10a arranged on the lower side shown in FIG. 4 slides on the conductor pattern 11b. Is arranged.

  Further, as shown in FIGS. 3 and 5, the resistor substrate 11 is provided with terminals 13 connected to the resistor pattern 11a and the conductor pattern 11b. The terminal 13 is drawn from the surface of the resistor substrate 11 on the side of the rotating body 10 to the cover 2 side, and is connected by soldering to one end of an output terminal 14 that is insert-molded in the casing 1. Other elements are not disposed on the surface of the resistor substrate 11 on the cover 2 side except for the terminals 13.

  In the shift change sensor having such a configuration, when the rotating body 10 rotates according to the rotation of the drive shaft 8 by the shift change operation by the operator, the resistance pattern 11a of the slider 10a fixed to the rotating body 10 is detected. An electrical signal corresponding to the position at is output from the output terminal 14. Thereby, the shift change operation by the operator is transmitted to the control device, and the shift change is performed by the control device.

  In the shift change sensor according to the present embodiment, when the space in the storage portion 7 is sealed by the cover 2, the cover 2 is pushed into the casing 1 as shown in FIG. 3. Then, the adhesive 15 is injected into a space formed by the slope portion 22 of the cover 2 and the inner wall of the casing 1. Thereby, the space in the storage portion 7 is sealed by the cover 2.

  In the shift change sensor according to the present embodiment, when the space in the storage portion 7 is sealed by the cover 2, the pressing member 16 held on the back side of the cover 2 contacts the resistor substrate 11, and the resistance is changed. The body substrate 11 is pressed to the rotating body 10 side. And the cover 2 will be adhere | attached with the adhesive agent 15 in the state in which the resistor board | substrate 11 was pressed to the rotary body 10 side in this way.

  In particular, in the shift change sensor according to the present embodiment, the pressing member 16 is configured to press the resistor substrate 11 from the back surface side to the rotating body 10 side in a region corresponding to the slider 10a.

  In the shift change sensor according to the present embodiment, notches 23 a and 23 b are formed in the slope portion 22 of the cover 2. For this reason, when the cover 2 is fixed to the casing 1 with the adhesive 15, the adhesive 15 enters the notches 23 a and 23 b. As a result, the adhesive 15 can be attached to the surface of the resistor substrate 11, so that the casing 1, the cover 2, and the resistor substrate 11 are integrated.

  As described above, according to the sensor device according to the present embodiment, when the space in the storage portion 7 is sealed by the cover 2, the pressing member 16 presses the resistor substrate 11 toward the rotating body 10 (slider 10a). To do. For this reason, even in a harsh usage environment in which vibration or the like due to traveling is applied, vibration of the resistor substrate 11 can be suppressed and wear generated in the slider 10a can be prevented, so that information to be detected can be detected with high accuracy. It becomes possible.

  In particular, according to the sensor device according to the present embodiment, the pressing member 16 presses a region corresponding to the resistor pattern 11a formed on the resistor substrate 11 from the back surface, and thus causes wear of the slider 10a. Thus, it becomes possible to effectively prevent the vibration of the resistor substrate 11.

  Further, in the sensor device according to the present embodiment, notches 23a and 23b are provided on the slope portion 22 of the cover 2, and the cover 2 is bonded and fixed to the inner wall of the casing 1 and at the same time via the notches 23a and 23b. The cover 2 and the resistor substrate 11 are bonded and fixed. Thereby, since the cover 2 and the resistor substrate 11 are bonded and fixed simply by bonding and fixing the cover 2 to the casing 1, the integrity of the casing 1, the cover 2 and the resistor substrate 11 can be improved. The vibration of the resistor substrate 11 can be effectively suppressed.

  In particular, in the sensor device according to the present embodiment, the notches 23 a and 23 b are provided in the vicinity of the region corresponding to the resistor pattern on the resistor substrate 11. Specifically, notched portions 23a and 23b are provided in a portion having an arc shape in the inclined surface portion 22. In this way, the notches 23a and 23b are provided in the vicinity of the region corresponding to the resistor pattern 11a in the resistor substrate 11, and the casing 1, the cover 2, and the resistor substrate 11 are integrated, thereby the slider. It is possible to effectively prevent the vibration of the resistor substrate 11 that causes the wear of 10a.

  In addition, this invention is not limited to the said embodiment, It can change and implement variously. In the above-described embodiment, the size, shape, and the like illustrated in the accompanying drawings are not limited to this, and can be appropriately changed within a range in which the effect of the present invention is exhibited. In addition, various modifications can be made without departing from the scope of the object of the present invention.

  For example, it is possible to make a change that enhances durability or the like in the sensor device according to the present embodiment. In the sensor device according to the present embodiment, the adhesive 15 is injected into the space formed by the slope portion 22 of the cover 2 and the inner wall of the casing 1, and at this time, the end portions of the notches 23 a and 23 b are injected. When bubbles are generated, a situation where the adhesiveness of the adhesive 15 is reduced may occur. In order to cope with such a situation, it is preferable as an embodiment that the end portions of the notches 23a and 23b have a shape that suppresses the generation of bubbles. For example, by forming the ends of the notches 23a and 23b in an R shape, bubbles generated in the adhesive 15 can be suppressed, and it is possible to prevent the adhesiveness of the adhesive 15 from being reduced.

It is a top view of a shift change sensor to which a sensor device according to an embodiment of the present invention is applied. (A) It is a top view of the cover which the shift change sensor which concerns on the said embodiment has. (B) It is a side view of the cover which the shift change sensor which concerns on the said embodiment has. (C) It is a reverse view of the cover which the shift change sensor which concerns on the said embodiment has. It is sectional drawing of the shift change sensor at the time of seeing from the arrow A direction in the dotted-line part shown in FIG. It is a top view at the time of removing the cover and resistor board which the shift change sensor concerning the above-mentioned embodiment has. It is a top view at the time of seeing the resistor board which the shift change sensor concerning the above-mentioned embodiment has from the lower surface side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Cover 7 Storage part 8 Drive shaft 10 Rotating body 10a Slider 11 Resistor board 11a Resistor pattern 11b Conductor pattern 14 Output terminal 15 Adhesive 16 Pressing member 21 Flat part 22 Slope part 23a, 23b Notch part 24a-24d rib 25 pressing member holding part

Claims (6)

  A substrate having a resistor pattern formed on one surface thereof, a slider that is arranged to face the resistor pattern and slides on the resistor pattern, and the substrate and the slider in the housing of the apparatus are accommodated. A cover member that seals the space; and a pressing member that is disposed between the substrate and the cover member and presses the substrate toward the slider. The pressing member includes the resistor in the substrate. A sensor device, wherein a region corresponding to a pattern is pressed from the back surface.   The sensor device according to claim 1, wherein the pressing member is held on a surface of the cover member facing the substrate.   The sensor device according to claim 1, wherein the pressing member is formed of an elastic member.   An opening is provided in the vicinity of the inner wall of the casing in the cover member, and the cover member is bonded and fixed to the inner wall of the casing, and at the same time, the cover member and the substrate are bonded and fixed through the opening. The sensor device according to any one of claims 1 to 3.   The sensor device according to claim 4, wherein the opening is provided in the vicinity of a region corresponding to the resistor pattern in the substrate.   A substrate having a resistor pattern formed on one surface thereof, a slider that is arranged to face the resistor pattern and slides on the resistor pattern, and the substrate and the slider in the housing of the apparatus are accommodated. A cover member for sealing the space, and an opening is provided in the vicinity of the inner wall of the housing in the cover member, and the cover member is bonded and fixed to the inner wall of the housing, and at the same time through the opening, A sensor device, wherein the substrate is bonded and fixed.

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