JP2009046038A - Sensor holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance of a yield by eliminating the deflection of a pressure-sensitive sensor in a sensor holder at assembling while suppressing an increase in manufacturing cost. <P>SOLUTION: A sensor retaining part 67 is folded and returned relative to a mounting part 61 to attach the pressure-sensitive sensor 50 for a vehicle to a sensor attachment part 68. Thereby, insertion work for inserting the pressure-sensitive sensor 50 for the vehicle from the end of the sensor holder 60 becomes unnecessary. Therefore, the deflection of the pressure-sensitive sensor 50 for the vehicle in the sensor holder 60 is eliminated and final energization inspection or the like becomes unnecessary to enhance a yield. Since a pressure-sensitive sensor of a special shape and a secondary material such as a lubricant for facilitating insertion work can be eliminated, an increase in manufacturing cost can be suppressed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a sensor holder that holds a cable-like pressure sensor that detects contact of an object to be detected, and in particular, to hold a vehicle pressure sensor that is used to detect pinching of an opening / closing device provided in a vehicle body. The present invention relates to a sensor holder suitable for the above.

  Opening / closing devices such as doors, tailgates, window glass, sunroofs, etc. provided on vehicles such as automobiles automatically open and close obstacles (detected objects) by the opening / closing operation. In order to prevent this, a pinching prevention function is provided. As a sensor for detecting pinching, a pressure-sensitive sensor called a cord switch is known, and this pressure-sensitive sensor is formed in a cable shape and is attached to an end of a vehicle body side opening or an end of an opening / closing body. It has become so.

As a technique using a pressure sensor (vehicle pressure sensor) provided in such a vehicle, for example, a pressure sensing device described in Patent Document 1 is known. The pressure sensing device described in Patent Document 1 includes a sensor body as a vehicle pressure sensor and a protector as a sensor holder that covers and holds the sensor body. The sensor body is provided with an outer skin portion made of a cable-shaped hollow tube, and a plurality of electrodes are arranged inside the sensor body so as to be arranged at predetermined intervals. When the outer skin portion is elastically deformed, the electrodes in the outer skin portion are short-circuited, and the pinching is detected when the short-circuit is detected by the computer.
Japanese Patent Laid-Open No. 11-283459

  However, according to the pressure sensing device described in Patent Document 1 described above, when the pressure sensing device is assembled, a protector having a length (for example, 1.2 m) substantially corresponding to the length of the slide door in the vertical direction is provided. On the other hand, a sensor body having substantially the same length is inserted from one end to the other end, and the sensor body is pushed into the protector so that both can be integrated.

  Therefore, due to the frictional resistance between the two, a relatively large force is required for insertion of the sensor body, which makes it difficult to assemble, and causes problems such as bending of the sensor body in the protector. Therefore, it is necessary to finally conduct an energization inspection as to whether or not the electrode in the sensor body is in a short circuit state.

  Therefore, in order to ensure the ease of assembly of the sensor body by thinning the insertion side end of the sensor body or to eliminate bending in the protector, a lubricant such as volatile alcohol is applied to the sensor body. It is conceivable to apply and suppress the frictional resistance between them. However, in this case, a sensor main body in which the insertion side end portion is formed in a special shape is required, or a secondary material such as a lubricant is required, which may cause a problem of increasing the manufacturing cost.

  An object of the present invention is to provide a sensor holder that can improve the yield by eliminating the bending of the pressure-sensitive sensor in the sensor holder during assembly while suppressing an increase in manufacturing cost.

  A sensor holder according to the present invention is a sensor holder for holding a pressure sensor formed in a cable shape for detecting contact of an object to be detected, and an attachment main body for attaching the pressure sensor to an object; A sensor holding portion whose one end is integrally connected to the detected object side of the mounting main body portion and whose other end is folded back to the object side of the mounting main body portion; and An engaged portion formed on the object side; and an engaging portion that is provided at the other end of the sensor holding portion and engages with the engaged portion; and one end side of the sensor holding portion and the A sensor mounting portion for accommodating the pressure sensitive sensor is formed between the mounting main body portion and the mounting main body portion.

  In the sensor holder of the present invention, a first wall portion thicker than the sensor holding portion is provided between the attachment main body portion and one end of the sensor holding portion, and the pressure sensitive sensor of the attachment main body portion is sandwiched between A second wall portion thicker than the sensor holding portion is provided at a position facing the first wall portion.

  The sensor holder according to the present invention is characterized in that the sensor holding portion is provided in the attachment main body so that a center position of the pressure-sensitive sensor is offset with respect to a center position of the attachment main body.

  A sensor holder according to the present invention is attached to at least one of a mounting stay on a vehicle body side or an attachment stay on an opening / closing body side provided on the vehicle body so as to be freely opened and closed, and detects a contact of an object to be detected. A sensor holder for holding the pressure sensor for the vehicle on the mounting stay, and a first leg portion provided integrally with the mounting portion and opposed to sandwich the mounting stay And a second leg, a recess provided in one of the first leg or the second leg, and a core provided continuously inside the attachment part, the first leg, and the second leg. A first wall portion and a second wall portion, which are integrally provided on the opposite side of the gold member and the first leg portion and the second leg portion of the mounting portion, and are disposed so as to sandwich the vehicle pressure sensor. And one end connected to either the first wall portion or the second wall portion, and the other end is the first wall portion. Alternatively, a sensor holding portion that is folded back to each leg portion side of the mounting portion across either one of the second wall portions, and one end side of the sensor holding portion and the first wall portion by folding the sensor holding portion. And a sensor mounting portion for accommodating the vehicle pressure sensor, and a convex portion provided at the other end of the sensor holding portion and fitted with the concave portion. It is characterized by providing.

  In the sensor holder of the present invention, either one of the respective wall portions is arranged on the same axis line so as to correspond to any one of the respective leg portions, and either one of the respective wall portions is disposed on the respective leg portion. It arrange | positions so that it may offset from either one, It is characterized by the above-mentioned.

  According to the present invention, the sensor holding part is folded back with respect to the attachment main body part, and the pressure-sensitive sensor is attached to the sensor attachment part. Therefore, the insertion work for inserting the pressure-sensitive sensor from the end of the sensor holder becomes unnecessary. . Therefore, the bending of the pressure sensor in the sensor holder can be eliminated, so that a final energization inspection or the like is not required and the yield can be improved. Further, since a secondary material such as a special-shaped pressure-sensitive sensor or a lubricant for facilitating insertion work is not required, an increase in manufacturing cost can be suppressed.

  According to the present invention, the first wall portion thicker than the sensor holding portion is provided between the attachment main body portion and one end of the sensor holding portion, and the first wall portion sandwiching the pressure-sensitive sensor of the attachment main body portion is provided. Since the second wall portion thicker than the sensor holding portion is provided in the facing portion, it is possible to suppress the pressure sensitive sensor from being elastically deformed more than necessary when the object to be detected is brought into contact with each of the highly rigid wall portions. Therefore, it is possible to extend the life of the pressure sensitive sensor by protecting the pressure sensitive sensor with each wall portion.

  According to the present invention, the sensor holding portion is provided in the attachment main body so that the center position of the pressure-sensitive sensor is offset with respect to the center position of the attachment main body, so that a clearance space is formed on the side opposite to the offset side. Can do. Therefore, it is possible to avoid the pressure-sensitive sensor from coming into contact with the counterpart member of the target object due to the clearance space, and it is possible to apply to a target type that is pulled in at the end while sliding.

  INDUSTRIAL APPLICABILITY According to the present invention, it can be applied as a sensor holder of a vehicle pressure sensor used for detecting pinching by an opening / closing body that is provided in an openable / closable manner on a vehicle body. In this case, either the first wall portion or the second wall portion that is disposed so as to sandwich the pressure sensor for the vehicle, and any of the first leg portion or the second leg portion that is disposed so as to sandwich the mounting stay. Either one of the walls can be offset from the other of the legs, and the other of the walls can be offset from the other of the legs.

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

  FIG. 1 is a side view showing a one-box type vehicle, FIG. 2 is a plan view showing a fully open state of an opening / closing device having a pressure sensor for vehicles, and FIG. 3 is a fully closed state of the opening / closing device of FIG. FIG. 4 is a plan view, FIG. 4 is an explanatory diagram showing the control system of the switchgear of FIG. 2, and FIG. 5 is an explanatory diagram explaining the mounting state of the pressure-sensitive sensor unit.

  As shown in FIG. 1, the vehicle 10 is a one-box type passenger car, and the side portion (left side of the vehicle body) of the vehicle body 11 of the vehicle 10 is opened and closed to open and close the opening 12 formed in the side portion. A slide door 13 as a body is provided. The sliding door 13 slides in the direction indicated by the broken line arrow in the drawing, that is, in the front-rear direction of the vehicle body 11.

  As shown in FIG. 2, the slide door 13 is provided with a roller assembly 14, and the slide assembly 13 is guided by a guide rail 15 fixed to the side of the vehicle body 11. It can be opened and closed between a fully open position indicated by a solid line in the figure and a fully closed position indicated by a two-dot chain line in the figure. Further, a curved portion 15a that curves toward the vehicle interior side (upward in the figure) is provided on the vehicle front side of the guide rail 15, and the sliding door 13 is guided by the roller assembly 14 being guided by the curved portion 15a. Is retracted to the inside of the vehicle body 11 at the end of the closing operation so as to be in the same plane as the side surface of the vehicle body 11 (see FIG. 3). That is, the slide door 13 moves according to the shape of the guide rail 15 formed in a substantially J shape.

  Here, although not shown, the roller assembly 14 is also provided in the upper and lower portions (upper portion and lower portion) of the front end portion of the slide door 13, and further, the upper and lower portions of the opening portion 12 of the vehicle body 11 corresponding thereto. Each is also provided with a guide rail. In this way, the sliding door 13 is supported at a total of three locations with respect to the vehicle body 11, and a stable opening / closing operation with respect to the vehicle body 11 is possible.

  As shown in FIG. 2, the vehicle body 11 is equipped with an opening / closing device 20 for automatically opening and closing the sliding door 13. The opening / closing device 20 includes a drive unit 21 that is fixed to the interior of the vehicle body 11 adjacent to a substantially central portion of the guide rail 15 in the vehicle front-rear direction. The drive unit 21 has a vehicle front side and a rear side. A pair of cables 22a and 22b are drawn out. A cable 22a drawn from the drive unit 21 to the vehicle front side is connected to the roller assembly 14 from the vehicle front side via a reversing pulley 23a provided at the front end of the guide rail 15, and a cable 22b drawn to the vehicle rear side is It is connected to the roller assembly 14 from the vehicle rear side via a reversing pulley 23b provided at the rear end of the guide rail 15.

  The drive unit 21 is driven so as to wind or feed out the cables 22a and 22b. When the cables 22a and 22b are driven by the drive unit 21, the slide door 13 moves to the vehicle front side or rear side. It is automatically opened and closed by being pulled by the respective cables 22a and 22b. That is, the switchgear 20 employs a so-called cable type switchgear.

  As shown in FIG. 4, the drive unit 21 has an electric motor 24 serving as a drive source thereof, and a speed reducer 25 connected thereto, and the electric motor 24 is rotated by the speed reducer 25 to a predetermined rotation. The output speed is reduced to a number and output from the output shaft 26. As the electric motor 24, for example, a brushable DC motor or a brushless DC motor that can rotate in both forward and reverse directions can be used.

  A drum 27 formed in a substantially cylindrical shape is fixed to the output shaft 26, and the cables 22 a and 22 b are wound around the outer peripheral surface of the drum 27 a plurality of times. As a result, when the electric motor 24 rotates in the forward direction, the drum 27 rotates in the clockwise direction in the drawing, the cable 22a on the closing side is wound around the drum 27, and the sliding door 13 is pulled by the cable 22a to perform the closing operation. On the contrary, when the electric motor 24 rotates in the reverse direction, the drum 27 rotates counterclockwise in the drawing, the open cable 22b is wound around the drum 27, and the slide door 13 is pulled by the cable 22b to open. Operate.

  The speed reducer 25 includes an electromagnetic clutch (not shown). When the slide door 13 is manually opened and closed, the electromagnetic clutch is turned off and the power transmission path between the electric motor 24 and the output shaft 26 is set. Thus, the slide door 13 can be opened and closed manually with a light load. Here, although not shown, a tensioner mechanism is provided between the drum 27 and the slide door 13, and the tension of each cable 22a, 22b is always kept constant by this tensioner mechanism.

  A multipolar magnetized magnet 28 having a large number of magnetic poles magnetized in the circumferential direction is fixed to the output shaft 26, and a predetermined phase difference is provided between the two Hall ICs 29 a, 29b is arranged. When the output shaft 26 rotates, each Hall IC 29a, 29b outputs a pulse signal having a predetermined period proportional to the rotational speed of the output shaft 26.

  In order to control the rotation of the electric motor 24 in the forward and reverse directions, a control device (controller) 30 is electrically connected to the electric motor 24 via wiring. The control device 30 has a function as a so-called microcomputer having a microprocessor (CPU), a memory such as a ROM, a RAM, and the like (not shown) therein. The operation of the motor 24 is controlled.

  The Hall ICs 29a and 29b are electrically connected to the control device 30 via wiring, and the control device 30 is connected to the output shaft 26 based on a pulse signal having a predetermined period input from the Hall ICs 29a and 29b. The number of rotations, that is, the opening / closing speed of the slide door 13 can be detected. Further, the control device 30 detects the rotation direction of the electric motor 24, that is, the moving direction of the slide door 13 based on the appearance timing of the pulse signals from the Hall ICs 29a and 29b, and the slide door 13 is further moved to the reference position. The opening / closing position of the slide door 13 can be detected by integrating, that is, counting, the pulse signals from the Hall ICs 29a and 29b, starting from the position (for example, the fully closed position).

  In order to command the opening / closing operation of the sliding door 13, the sliding door 13 is provided with a door handle 31 having a function as an opening / closing switch. When the door handle 31 is operated by an operator such as an occupant, this door A command signal (trigger signal) is input from the handle 31 to the control device 30. That is, the control device 30 calculates the opening / closing position, opening / closing speed, and the like of the sliding door 13 using the control program stored in the memory in response to the input of the command signal from the door handle 31, and the electric motor is calculated from the calculation result. 24 rotation control (opening / closing control of the sliding door 13) is executed.

  For example, when the door handle 31 is operated when the slide door 13 is in the fully open state, the control device 30 receives the command signal from the door handle 31 and the slide door 13 is in the fully open position. Drive forward and move the slide door 13 in the fully closed direction. On the contrary, when the door handle 31 is operated when the slide door 13 is in the fully closed state, the control device 30 receives the command signal from the door handle 31 and the slide door 13 is in the fully closed position. Therefore, the electric motor 24 is driven in reverse to move the slide door 13 in the fully open direction.

  However, the door handle 31 as the opening / closing switch is not limited to the two-position switch that is switched to the ON-OFF state (two positions) as described above, but is, for example, three positions that are switched to the OPEN-OFF-CLOSE state (three positions). A switch or the like can also be employed.

  In order to detect contact between the slide door 13 and an obstacle (detected object) such as a load, and the obstacle being caught by the slide door 13 due to the contact, the vehicle front side of the slide door 13, that is, the slide door 13 is detected. A pressure-sensitive sensor unit 40 is attached to an end portion that becomes a traveling direction side when the is closed. As shown in FIGS. 2 and 3, the pressure sensor unit 40 is attached to a mounting stay 13 a provided integrally with the slide door 13, and the pressure sensor unit 40 is a vehicle pressure sensor. A sensor (pressure sensor) 50 and a sensor holder 60 are provided. As shown in FIG. 5, the pressure-sensitive sensor unit 40 is formed in a predetermined shape in advance so that it can be mounted on a mounting stay 13a formed in a corrugated shape in accordance with the shape of the sliding door 13, that is, the body shape of the vehicle body 11. ing.

  As shown in FIG. 4, the vehicle pressure sensor 50 constituting the pressure sensor unit 40 is electrically connected to the control device 30 via a wiring, whereby the vehicle pressure sensor 50 is elastically deformed. The short circuit signal that is generated is input to the control device 30 so that the contact between the sliding door 13 and the obstacle and the sandwiching of the obstacle by the sliding door 13 due to the contact can be detected. When the control device 30 receives a short circuit signal from the vehicle pressure sensor 50, the control device 30 generates a warning sound from, for example, a piezoelectric sounder (not shown) and stops rotation control of the electric motor 24. ing.

  6 is an enlarged cross-sectional view showing the detailed structure of the pressure-sensitive sensor unit, FIGS. 7A and 7B are enlarged cross-sectional views showing the detailed structure of the vehicle pressure-sensitive sensor, and FIGS. ) And (c) show assembly process diagrams for explaining the assembly procedure of the pressure-sensitive sensor unit.

  As shown in FIG. 6, the pressure sensor unit 40 covers the periphery of the vehicle pressure sensor 50 to protect the vehicle pressure sensor 50, and the vehicle pressure sensor 50 is placed at a predetermined position on the vehicle body 11. The sensor holder 60 is held at a predetermined thickness so as to have flexibility by rubber or the like that is an insulator.

  The sensor holder 60 includes an attachment portion (attachment main body portion) 61 for attaching the vehicle pressure-sensitive sensor 50 to the attachment stay 13a of the slide door 13, and the attachment portion 61 is the left-right direction of the attachment stay 13a in the figure. The attachment portion 61 forms a main body portion of the sensor holder 60. The attachment portion 61 is provided so as to extend over the attachment stay 13a.

  On the object side of the attachment portion 61, that is, on the attachment stay 13 a side (lower side in the drawing), the first leg portion 62 and the second leg portion 63 as attachment body portions are substantially perpendicular to the left and right end sides of the attachment portion 61. The leg portions 62 and 63 are arranged so as to face each other with the attachment stay 13a interposed therebetween.

  A pair of retaining pieces 62a and 62a functioning as a retaining member for the pressure-sensitive sensor unit 40 from the retaining stay 13a is integrally provided on the mounting stay 13a side (the right side in the figure) of the first leg 62. Each retaining piece 62a, 62a is elastically deformed between the first leg portion 62 and the mounting stay 13a, and its distal end is extended upward in the drawing.

  A concave portion (engaged portion) 63a into which a convex portion 67a of a sensor holding portion 67 described later enters is provided on the mounting stay 13a side of the second leg portion 63, and the convex portion of the sensor holding portion 67 is provided in the concave portion 63a. By fitting 67a, the convex portion 67a side of the sensor holding portion 67 can be firmly fixed to the mounting portion 61.

  Inside the mounting part 61 and the leg parts 62 and 63, a cored bar member 64 having a substantially U-shaped cross section formed by pressing a long sheet steel material or the like is formed by a molding means such as insert molding. The cored bar member 64 is embedded and formed in the same shape as the mounting stay 13a in accordance with the corrugated shape of the mounting stay 13a (see FIG. 5). Thereby, the shape of the flexible sensor holder 60 is held by the cored bar member 64 in accordance with the waveform shape of the mounting stay 13a. Further, the cored bar member 64 is continuously provided so as to connect the mounting part 61 and the leg parts 62 and 63, respectively, whereby the mounting stay 13a has a substantially U-shaped cross section of the cored bar member 64. It enters the inside of the shape and prevents it from coming out.

  The first wall portion 65 and the second wall portion 66 extend in a substantially vertical direction with respect to the attachment portion 61 on the detected object side of the attachment portion 61, that is, on the side opposite to the attachment stay 13 a side (upper side in the drawing). So as to be integrated. The wall portions 65 and 66 are arranged to face each other with the vehicle pressure sensor 50 interposed therebetween, and the protruding heights from the mounting portion 61 are set to dimensions h1 and h2 (h1> h2), respectively. Here, the height dimension h1 of the first wall portion 65 is set to be larger than the radial dimension of the vehicle pressure sensor 50, and the height dimension h2 of the second wall portion 66 is the radius of the vehicle pressure sensor 50. The dimensions are set to be approximately the same as the dimensions.

  The first wall 65 is a position slightly offset to the left in the figure from the center position C1 of the mounting stay 13a with the sensor holder 60 mounted on the mounting stay 13a, that is, the axis of the first leg 62. The first wall portion 65 is provided at a position deviated from the center, and is configured to gradually become thinner from the attachment portion 61 toward the upper side in the drawing. However, within the range of the height dimension h1 of the first wall portion 65, the thickness is larger than the thickness dimension t of the sensor holding portion 67, and the rigidity of the first wall portion 65 is the rigidity of the sensor holding portion 67. Higher than.

  The second wall portion 66 is provided at a position on the second leg portion 63 side of the attachment portion 61, and the second wall portion 66 and the second leg portion 63 are arranged so that the axial center of the second wall portion 66 substantially coincides with the second leg portion 63. The second wall portion 66 is extended on the opposite side of the leg portion 63. The second wall portion 66 is configured to gradually become thinner from the attachment portion 61 toward the upper side in the figure, and within the range of the height dimension h 2, the sensor is held in the same manner as the first wall portion 65. It is thicker than the thickness dimension t of the portion 67. Therefore, the rigidity of the second wall portion 66 is also higher than the rigidity of the sensor holding portion 67.

  At the upper end of the first wall portion 65 in the figure, a sensor holding portion 67 having a wall thickness t that is thinner than the wall portions 65 and 66, that is, a rigidity lower than the rigidity of the wall portions 65 and 66. One end of the sensor holding portion 67 is connected to the attachment portion 61 via the first wall portion 65. The other end of the sensor holding part 67 is folded back to the second leg part 63 side of the attachment part 61 across the second wall part 66, and a sensor attachment to which the vehicle pressure-sensitive sensor 50 is attached is provided on the inner side. A portion 68 is formed.

  At the other end of the sensor holding portion 67, a convex portion (engaging portion) 67a that enters the concave portion 63a of the second leg portion 63 is integrally provided, and this convex portion 67a is a concave portion that fits into the concave portion 63a. It has the same shape as 63a. The convex portion 67a is fixed to the concave portion 63a by further folding back the other end of the sensor holding portion 67 when the sensor holder 60 is not attached to the mounting stay 13a.

  As shown in FIG. 6, a pair of retaining pieces 69a, 69a functioning as a retaining member for the pressure-sensitive sensor unit 40 from the mounting stay 13a between the convex portion 67a side of the sensor holding portion 67 and the mounting stay 13a. Are integrally provided, and each retaining piece 69a, 69a is elastically deformed between the sensor holding portion 67 and the mounting stay 13a, and its tip side is extended upward in the drawing. .

  In this way, by mounting the pressure-sensitive sensor unit 40 on the mounting stay 13a in a state where the convex portion 67a of the sensor holding portion 67 is fixed to the concave portion 63a of the second leg portion 63, the mounting stay 13a projects the convexity. The part 67a is pressed by the concave part 63a, and as a result, the convex part 67a and the concave part 63a are firmly fixed without coming off. Further, there is no deviation between the convex portion 67a and the concave portion 63a due to the step engagement.

  The vehicle mounting pressure sensor 50 is mounted on the sensor mounting portion 68, and the center position C2 of the vehicle pressure sensor 50 is on the right side (inside the vehicle body 11) from the center position C1 of the mounting stay 13a. It is offset by a predetermined distance L. As described above, by mounting the vehicle pressure sensor 50 offset from the center position C1 of the mounting stay 13a, the vehicle pressure sensor 50 has a broken line on the left side (outside of the vehicle body 11) in the figure. A space S surrounded by is formed. As shown by the broken line arrow in FIG. 3, the space S has a feeling to the pillar P forming the vehicle body 11 when the slide door 13 is drawn inside the vehicle body 11 at the end of the closing operation of the slide door 13. It functions as an escape space for avoiding contact of the pressure sensor unit 40. Accordingly, unnecessary elastic deformation of the pressure sensor unit 40 can be avoided and malfunction of the pressure sensor unit 40 can be suppressed.

  As shown in FIGS. 7A and 7B, the vehicle pressure sensor 50 has an outer electrode 51 and an inner electrode 52. The outer electrode 51 is made of, for example, conductive rubber (ethylene-propylene). -It is formed in a tubular shape (tube shape) by a flexible conductor such as diene rubber (EPDM), and the inside is hollow. The inner electrode 52 is formed in a linear shape (cylindrical shape) by a flexible conductor such as a conductive rubber like the outer electrode 51, and the outer electrode 51 and the inner electrode 52 are formed on the inner side (hollow portion) of the outer electrode 51. It is arranged coaxially.

  Between the outer electrode 51 and the inner electrode 52, for example, three spacer members 53 formed in a spiral shape by an insulator such as rubber are disposed, and the outer electrode 51 and the inner electrode 52 are separated by each spacer member 53. A gap is formed between them. Thus, in a normal state where no external force F is applied, the outer electrode 51 and the inner electrode 52 are electrically insulated from each other by the spacer members 53. The spacer members 53 are arranged at equal intervals in the circumferential direction, whereby the gap between the outer electrode 51 and the inner electrode 52 at each position in the longitudinal direction and the circumferential direction of the vehicle pressure sensor 50 is made uniform. It is like that.

  Inside the inner electrode 52, an inner conductor 54 is embedded along its axis. The inner conductor 54 is in contact with and electrically connected to the inner electrode 52, penetrates the inner electrode 52 in the longitudinal direction, and one end thereof is electrically connected to the control device 30.

  Three outer conductors 55 are embedded in the outer electrode 51 at equal intervals in the circumferential direction. As shown in FIG. 7A, the outer conductors 55 are located between the spacer members 53 arranged around the inner conductor 54, and are arranged in a spiral like the spacer members 53. Yes. That is, the spacer members 53 and the outer conductive wires 55 are arranged so as to be alternately arranged at equal intervals along the circumferential direction around the inner conductive wire 54.

  Each outer conductor 55 is in contact with and electrically connected to the outer electrode 51, and one end thereof is electrically connected to the controller 30 through the outer electrode 51 in the longitudinal direction. When the external force F is applied and the outer electrode 51 is elastically deformed to contact the inner electrode 52, each outer conductor 55 is short-circuited to the inner conductor 54 via the outer electrode 51 and the inner electrode 52. .

  Next, the assembly procedure of the pressure-sensitive sensor unit 40 will be described in detail with reference to the drawings.

  As shown in FIG. 8A, first, a sensor holder 60 formed in a predetermined shape is prepared, and a vehicle pressure sensor 50 is prepared (part preparation step).

  Next, with the sensor holding part 67 of the sensor holder 60 removed from the attachment part 61, the vehicle pressure-sensitive sensor 50 is connected to the first wall part 65 and the second wall part 66 as indicated by the broken line arrows in the figure. (Temporary holding process). At this time, the vehicle pressure sensor 50 is gradually mounted between the wall portions 65 and 66 from one end side to the other end side of the vehicle pressure sensor 50. In this case, the vehicle pressure sensor 50 is used. When the other end side of the vehicle is mounted between the wall portions 65, 66, one end side of the vehicle pressure-sensitive sensor 50 is supported by the second wall portion 66 and does not fall off from the attachment portion 61. In the temporary holding step, the mounting operation can be performed smoothly without using a secondary material such as a conventional lubricant, and the vehicle pressure-sensitive sensor 50 is not twisted or bent.

  Thereafter, as shown in FIG. 8B, the sensor holding part 67 is folded back from one end side to the other end side of the sensor holder 60 as shown by a broken line arrow in the figure, and the convex part 67 a of the sensor holding part 67 is formed. Is fixed to the recess 63a of the second leg 63 (fixing step). As a result, as shown in FIG. 8C, the sensor mounting portion 68 is formed inside the sensor holding portion 67 and the vehicle pressure sensor 50 is mounted on the sensor mounting portion 68. The assembly of the pressure sensor unit 40 is completed.

  Next, each retaining piece 13a is sandwiched between the first leg portion 62 of the completed pressure-sensitive sensor unit 40 and the second leg portion 63 including the convex portion 67a of the sensor holding portion 67 so as to sandwich the mounting stay 13a. The pressure sensitive sensor unit 40 is mounted on the mounting stay 13a while deforming 62a and 69a (see FIG. 5). Then, one end of the inner conductor 54 and the outer conductor 55 in the vehicle pressure sensor 50 is electrically connected to a predetermined interface of the controller 30 to complete the mounting of the pressure sensor unit 40 to the vehicle body 11 ( Unit installation process).

  Next, detection of an obstacle contact by the vehicle pressure sensor 50 will be described.

  For example, when the obstacle DA comes into contact with the end of the sensor holder 60 as shown in FIG. 1 while the sliding door 13 is closed, the outer electrode of the vehicle pressure-sensitive sensor 50 is brought together with the sensor holder 60 by the contact. The outer electrode 51 comes into contact with the inner electrode 52 as shown by the broken line in FIG. Here, the deformation amount of the vehicle pressure sensor 50 is regulated to a predetermined amount by the respective wall portions 65 and 66 (see FIG. 6) of the sensor holder 60, so that the vehicle pressure sensor 50 is more than necessary. The inner conductor 54 and the outer conductor 55 are prevented from being broken due to elastic deformation.

  When the outer electrode 51 comes into contact with the inner electrode 52, the inner conductor 54 and the outer conductor 55 are short-circuited via the electrodes 51, 52, and a short-circuit current flows through each of the conductors 54, 55, and this short-circuit current becomes a detection signal. Then, the control device 30 detects the contact of the obstacle DA. Thereafter, the control device 30 stops the slide door 13 (emergency stop) or reverses it in the opening direction (opening operation), thereby preventing the obstacle DA from being caught by the slide door 13.

  The vehicle pressure sensor 50 is configured to provide a uniform gap between the outer electrode 51 and the inner electrode 52 by the three spiral spacer members 53, and therefore the vehicle pressure sensor 50. On the other hand, even when the obstacle DA comes in contact with any direction from the circumferential direction, the detection sensitivity does not differ greatly, and therefore the pinching detection accuracy does not decrease.

  According to the sensor holder 60 according to the present embodiment configured as described above, the sensor holding portion 67 is folded back with respect to the attachment portion 61, and the vehicle pressure-sensitive sensor 50 is attached to the sensor attachment portion 68. The insertion work for inserting the vehicle pressure sensor 50 from the end portion of the vehicle 60 becomes unnecessary. Therefore, the bending of the vehicle pressure-sensitive sensor 50 in the sensor holder 60 can be eliminated, so that a final energization test or the like is not required, and the yield can be improved. Further, since a secondary material such as a specially shaped pressure sensor for a vehicle or a lubricant for facilitating insertion work is not required, an increase in manufacturing cost can be suppressed.

  In addition, according to the sensor holder 60 according to the present embodiment, the first wall portion 65 thicker than the sensor holding portion 67 is provided between the attachment portion 61 and one end of the sensor holding portion 67, and the attachment portion 61. Since the second wall portion 66 thicker than the sensor holding portion 67 is provided at a portion facing the first wall portion 65 sandwiching the vehicle pressure-sensitive sensor 50, the high-rigidity wall portions 65 and 66 are used for the vehicle. It is possible to suppress the pressure-sensitive sensor 50 from being elastically deformed more than necessary when an obstacle is in contact. Therefore, the vehicle pressure sensor 50 can be protected by the wall portions 65 and 66 to extend the life of the vehicle pressure sensor 50.

  Furthermore, according to the sensor holder 60 according to the present embodiment, the sensor holding portion 67 is provided in the attachment portion 61 so that the center position of the vehicle pressure sensor 50 is offset with respect to the center position of the attachment portion 61. A space S can be formed on the side opposite to the offset side. Therefore, it is possible to avoid the pressure sensor 50 for the vehicle from coming into contact with the pillar P forming the vehicle body 11 by the space S, and like the slide door 13, it is drawn into the vehicle body 11 at the end of the closing operation. It can be applied to a type of opening / closing body.

  The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the invention. For example, in the present embodiment, the sensor holder 60 is attached to the attachment stay 13a of the slide door 13 as the opening / closing body. However, the present invention is not limited to this, and the sensor holder 60 is attached to the vehicle body 11. You may make it attach to the attachment stay of the opening part 12. FIG.

  Moreover, in the said embodiment, although the slide door 13 is illustrated as an opening / closing body, this invention is not limited to this, Opening / closing bodies, such as a hinged door, a back door, a window glass, a sunroof, and a trunk lid, The sensor holder 60 according to the present invention may be attached, or the sensor holder 60 according to the present invention may be attached to an end of an opening that is opened and closed by these opening and closing bodies.

  Furthermore, in the above-described embodiment, the pressure sensor 50 for a vehicle that is elastically deformed when the obstacle DA is in contact and generates a short circuit signal due to a short circuit between the conductors 54 and 55 inside the pressure sensor. Although what was employ | adopted was shown, this invention is not restricted to this, For example, the piezoelectric element (piezo element) which generate | occur | produces a predetermined voltage when external force is applied can also be used as a pressure sensor.

It is a side view showing a one-box type vehicle. It is a top view which shows the full open state of the switchgear provided with the pressure sensor for vehicles. It is a top view which shows the fully-closed state of the opening / closing apparatus of FIG. It is explanatory drawing which shows the control system of the switchgear of FIG. It is explanatory drawing explaining the mounting state of a pressure-sensitive sensor unit. It is an expanded sectional view showing the detailed structure of a pressure sensitive sensor unit. (A), (b) is an expanded sectional view which shows the detailed structure of the pressure sensor for vehicles. (A), (b), (c) is an assembly-process figure explaining the assembly procedure of a pressure-sensitive sensor unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Car body 12 Opening part 13 Sliding door (opening-closing body)
13a Mounting stay (object)
DESCRIPTION OF SYMBOLS 14 Roller assembly 15 Guide rail 15a Bending part 20 Opening and closing device 21 Drive unit 22a, 22b Cable 23a, 23b Reverse pulley 24 Electric motor 25 Reduction gear 26 Output shaft 27 Drum 28 Multipolar magnetized magnet 29a, 29b Hall IC
30 control device 31 door handle 40 pressure sensor unit 50 vehicle pressure sensor (pressure sensor)
51 outer electrode 52 inner electrode 53 spacer member 54 inner conductor 55 outer conductor 60 sensor holder 61 attachment portion (attachment main body portion)
62 1st leg (mounting body)
62a Retaining piece 63 Second leg (mounting body)
63a Recess (engaged part)
64 Core metal member 65 First wall portion 66 Second wall portion 67 Sensor holding portion 67a Convex portion (engaging portion)
68 Sensor mounting part 69a Retaining piece DA Obstacle (detected object)
P pillar S space (escape space)

Claims (5)

A sensor holder for holding a pressure-sensitive sensor formed in a cable shape for detecting contact of an object to be detected,
An attachment body for attaching the pressure sensitive sensor to an object;
One end is integrally connected to the detected object side of the mounting body part, and the other end is folded back to the object side of the mounting body part, and a sensor holding part,
An engaged portion formed on the object side of the attachment main body;
An engagement portion that is provided at the other end of the sensor holding portion and engages with the engaged portion, and houses the pressure-sensitive sensor between one end side of the sensor holding portion and the attachment main body portion. Sensor holder for forming a sensor holder.   The sensor holder according to claim 1, wherein a first wall portion thicker than the sensor holding portion is provided between the attachment main body portion and one end of the sensor holding portion, and the pressure sensitive sensor of the attachment main body portion. A sensor holder, characterized in that a second wall portion thicker than the sensor holding portion is provided at a position facing the first wall portion with a gap therebetween.   3. The sensor holder according to claim 1, wherein the sensor holding portion is provided in the attachment main body portion so that a center position of the pressure-sensitive sensor is offset with respect to a center position of the attachment main body portion. . A sensor holder that is attached to at least one of a mounting stay on the vehicle body side or an attachment stay on the opening / closing body side that is provided on the vehicle body so as to be openable and closable, and holds a cable-shaped pressure sensor for a vehicle for detecting the contact of an object to be detected. And
An attachment portion for attaching the vehicle pressure sensor to the attachment stay;
A first leg and a second leg, which are provided integrally with the attachment portion and are arranged to face each other with the attachment stay interposed therebetween;
A recess provided in either the first leg or the second leg;
A cored bar member provided continuously inside the mounting part and the first leg part and the second leg part;
A first wall portion and a second wall portion that are integrally provided on the opposite side of the attachment portion from the first leg portion and the second leg portion, and are arranged to face each other with the vehicle pressure sensor interposed therebetween;
The first wall portion and the second wall portion are formed thinner than the first wall portion, one end is connected to either the first wall portion or the second wall portion, and the other end is the first wall portion or the second wall portion. A sensor holding part that is folded back to each leg part side of the attachment part across either one of the wall parts;
A sensor mounting portion for accommodating the vehicle pressure-sensitive sensor formed between the one end side of the sensor holding portion and the first wall portion and the second wall portion by folding the sensor holding portion;
A sensor holder, comprising a convex portion provided at the other end of the sensor holding portion and fitted into the concave portion.   5. The sensor holder according to claim 4, wherein any one of the wall portions is arranged on the same axis line corresponding to any one of the leg portions, and any one of the wall portions is attached to each leg. A sensor holder, wherein the sensor holder is arranged so as to be offset from any one of the other parts.

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