JP2016205816A - Shift position detection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shift position detection device used mainly on a vehicle capable of reducing the size.SOLUTION: Magnetic field detection elements 42 and 43 are disposed at a position opposing to a slide coupler 24 or a rotation coupler 27 of a print circuit board 41 being interposed by the print circuit board 41. With this, since the print circuit board 41 supports the slide coupler 24 or the rotation coupler 27, a small size shift position detection device 100 is achieved, in which the distance between the slide coupler 24 or the rotation coupler 27 and the detection element is stable.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a shift position detecting device mainly used for detecting a shift lever position of a vehicle.

  For detecting the shift lever position of a vehicle, a shift lever box with a built-in mechanism for position detection and a shift position detection device attached to the shift lever box are used to determine the position of the shift lever. There is something. The shift position detection device has the advantage of being easy to handle with the same design even if the vehicle type is different.

  Such a conventional shift position detecting device will be described below.

  In the perspective view of FIG. 11, the shift position detection device 10 is fixed to the shift lever box 9. The shift lever box 9 includes a shift lever 1 and a shift position display 2.

  The shift position display 2 displays P, R, N, D, 2, and L shift positions. The shift lever box 9 and the shift position detection device 10 are connected by pins or levers that rotate or tilt according to the shift position of the shift lever 1, and the shift position detection device 10 is a shift lever by a mechanical or electromagnetic mechanism. 1 shift position is determined.

  FIG. 12 is an exploded perspective view of another conventional shift position detecting device 20, and FIG. 13 is a diagram showing the shift positions to which the shift position detecting device 20 corresponds.

  As shown in FIG. 13, the shift position changes two-dimensionally in the shift direction F and the select direction T. Here, when the shift position changes in the select direction T, the slide lever 11 of the shift position detection device 20 in FIG. 12 slides along the guide 12. When the shift position changes in the shift direction F, the dial 13 rotates in accordance with the change in the shift direction F.

  When the slide lever 11 slides, the magnet 14 arranged on the slide lever 11 moves up and down, and the shift position in the select direction T is determined by the determination circuit 15 that detects the change in the magnetic field.

  When the dial 13 is rotated, the gear 16 meshed with the dial 13 is rotated, and the magnet 17 arranged so as to be interlocked with the gear 16 is rotated. The rotation of the magnet 17 is detected by the determination circuit 15, and the determination circuit 15 determines the shift position in the shift direction F.

  As prior art document information related to the invention of this application, for example, Patent Documents 1 and 2 are known.

JP-A-8-25994 JP 2007-331504 A

  However, in the above conventional shift position detection device, the gear on which the magnet is arranged and the printed circuit board are both positioned and fixed by the case, so that it is affected by variations in case dimensions and assembly of the shift position detection device. It was easy. Therefore, it is necessary to ensure a sufficient and sufficient interval between the magnet and the magnetic field detection element, and it is difficult to reduce the size because the magnet is easily enlarged or the thickness of the magnetic field detection element is increased.

  The present invention solves such a conventional problem, and an object of the present invention is to provide a shift position detection device suitable for miniaturization.

  In order to achieve the above object, the present invention particularly relates to a coupler that moves linearly or rotates in conjunction with the operation of a shift lever, a substrate that supports the coupler, a position that is fixed to the substrate, and a position or rotation angle of the coupler. Alternatively, a detection element for detecting by a change in the magnetic field is provided, and the detection element is disposed at a position facing the coupler of the substrate with the substrate interposed therebetween.

  According to the present invention, a coupler that linearly moves or rotates in conjunction with the operation of the shift lever, a substrate that supports the coupler, and a position or rotation angle of the coupler that is fixed to the substrate and that detects the position or rotation angle of the coupler by a change in electric field or magnetic field. A detection element is provided, and the detection element is disposed at a position facing the coupler of the substrate with the substrate interposed therebetween.

  According to this, since the coupler is supported by the substrate, the distance between the coupler and the detection element is stable, and a shift position detection device suitable for miniaturization can be obtained.

The disassembled perspective view of the shift position detection apparatus by embodiment of this invention Side view of the shift position detector with the right case removed Sectional view of the shift position detector Perspective view of the shift position detection device Partial enlarged sectional view of the shift position detecting device Side sectional view of part of the shift position detector A perspective view of a slide coupler used in the shift position detecting device The figure explaining the shift position of the shift position detector Sectional drawing which shows operation | movement of the same shift position detection apparatus Sectional drawing which shows other embodiment of a shift position detection apparatus. The perspective view which shows arrangement | positioning of the conventional shift position detection apparatus. An exploded perspective view of another conventional shift position detection device The figure explaining the shift position of other conventional shift position detectors

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

(Embodiment)
FIG. 1 is an exploded perspective view of a shift position detecting device 100 according to an embodiment of the present invention, FIG. 2 is a side view with a right case 32 removed, and FIG. 3 is a sectional view thereof.

  In FIG. 1, the shift position detection apparatus 100 includes a case 21, a circuit board 22, a film 23, a slide coupler 24, springs 25 and 26, and a rotary coupler 27.

  The case 21 includes a left case 31 and a right case 32. A circuit board 22, a film 23, a slide coupler 24, springs 25 and 26, and a rotary coupler 27 are accommodated between the left case 31 and the right case 32, and the shift position detection device 100 is configured.

  Here, the left case 31 is made of insulating resin or the like, and includes a substrate placement portion 31A that is recessed in the lower half, a through hole 31B in the upper half, and a top surface portion 31C on the top surface. An outer edge portion 31D protruding over the entire left side surface is provided. In addition, a spring accommodating portion 31E is provided between the through hole 31B and the substrate placement portion 31A, and a protrusion 31F is provided in the substrate placement portion 31A.

  The right case 32 has a substantially symmetrical shape with the left case 31 and includes a substrate placement portion 32A that is recessed in the lower half, a through hole 32B in the upper half, and a top surface portion 32C on the top surface. An outer edge portion 32D protruding over the entire right side surface is provided. Further, a spring accommodating portion 32E is provided between the through hole 32B and the substrate placement portion 32A, and a circular hole 32F is provided in the substrate placement portion 32A.

  In FIG. 3, the top surface portion 31C and the top surface portion 32C are combined so as to partially overlap each other, and even if the top surface portion 31C and the top surface portion 32C are flooded, the inside of the shift position detection device 100 is difficult to be submerged. ing. Further, as shown in the perspective view of FIG. 4, the top surface portion 31C and the top surface portion 32C are grooves formed by the outer edge portion 31D and the outer edge portion 32D of the outer edge, and can rectify the wet water and prevent scattering. Further, the top surface portion 31C and the top surface portion 32C are provided with a gentle slope so that the wetted water is quickly drained toward the sensor side surface.

  As shown in FIGS. 1 and 2, the circuit board 22 includes a printed circuit board 41, magnetic field detection elements 42 and 43, and a connector 44.

  The printed circuit board 41 is a board such as a glass epoxy board or a paper phenol board, and the magnetic field detection elements 42 and 43 are disposed on the surface on the left case 31 side, and the connector 44 is disposed on the surface opposite to the left case 31.

  Here, the magnetic field detection elements 42 and 43 are Hall ICs (Integrated Circuits) or the like. The magnetic field detection element 42 is disposed at a position substantially opposite to the magnet 52 disposed on the rotary coupler 27 in the approximate center of the printed circuit board 41, and the magnetic field detection element 43 is disposed at a position facing the magnet 62 disposed on the slide coupler 24. Is done.

  The film 23 is a resin film made of polyethylene terephthalate or the like and is attached to the printed board 41. Further, the rotary coupler 27 and the slide coupler 24 are in contact with the film 23.

  As illustrated in FIGS. 1 and 3, the rotary coupler 27 includes a main body 51 and a magnet 52 fixed to the main body 51. Here, the main body 51 has a cylindrical shape, a spring locking portion 51A protruding to the outer peripheral side, a recess 51B exposed on the circular hole 32F side of the right case 32, and a recess 51C provided on the back surface of the recess 51B in the main body 51. Is provided. And the magnet 52 is accommodated in the hollow 51C.

  FIG. 5 is a partially enlarged view of a portion where the magnet 52 and the magnetic field detection element 42 face each other. Here, the magnet 52 is fixed to the main body 51 and faces the printed circuit board 41 to which the film 23 is attached. Here, the distance between the main body 51 and the magnet 52 and the printed circuit board 41 is within 0.5 mm. The main body 51 is in contact with the film 23, whereby the rotary coupler 27 is supported between the printed circuit board 41 and the right case 32.

  In this way, the rotary coupler 27 and the magnetic field detecting element 42 are arranged to face each other with the printed board 41 interposed therebetween, and the rotary coupler 27 is supported by the printed board 41, so that the magnet 52 and the printed board 41 can be arranged close to each other. Become.

  Thereby, the magnet 52 can be reduced in size or the thickness of the shift position detecting device 100 can be reduced. Further, since the rotary coupler 27 is in contact with the film 23, high abrasion resistance can be realized while controlling the distance between the printed board 41 and the rotary coupler 27 by the film 23.

  FIG. 6 is a side sectional view showing the arrangement of the spring 26.

  As shown in FIGS. 2 and 6, the spring 26 has an end portion 26A connected to the protrusion 31F protruding from the left case 31 through the printed circuit board 41 and the film 23, and the end portion 26B connected to the spring locking portion 51A. Is done. The spring 26 expands and contracts according to the rotation of the rotary coupler 27. The end portions 26A and 26B are wound a plurality of times to give a width, and this width can prevent the elastic portion of the spring from contacting the printed circuit board 41 when assembled. Accordingly, loss of spring force due to the spring 26 coming into contact with the printed circuit board 41 is prevented, and the rotary coupler 27 connected to the spring 26 can be smoothly rotated.

  The slide coupler 24 includes a main body 61 and a magnet 62 as shown in FIG.

  FIG. 7 is a perspective view of the main body 61 of the slide coupler 24.

  The main body 61 is made of an insulating resin such as polyoxymethylene, and has a cylindrical spring holding portion 61A, a through hole 61B arranged above the spring holding portion 61A, and guides 61C and 61D arranged with the through hole 61B interposed therebetween. , A protrusion 61E provided below the through hole 61B, and a square hole 61F provided below the guide 61C. A magnet 62 is disposed in the square hole 61F.

  As shown in FIG. 7, the main body 61 is provided with guides 61 </ b> C and 61 </ b> D that protrude through the through hole 61 </ b> B. The guides 61 </ b> C and 61 </ b> D are combined with the guide groove of the left case 31 as shown in FIG. 2 so that the entire slide coupler 24 can be slid relative to the left case 31. In this manner, by arranging the guides 61C and 61D with the through hole 61B interposed therebetween, lateral distortion when the slide coupler 24 moves up and down is suppressed, and smooth movement becomes possible.

  Here, the slide coupler 24 is disposed in contact with the film 23, and the magnet 62 and the printed circuit board 41 can be disposed close to each other by supporting the slide coupler 24 by the printed circuit board 41.

  In addition, since the protrusion 61E is provided at the end of the through hole 61B, it is easy to place a finger when the shift position detecting device 100 is attached, and the assembling property is improved.

  The spring 25 is held between a spring holding portion 61A and a cylindrical space formed by combining the spring accommodating portion 31E and the spring accommodating portion 32E with a compression spring. When the slide coupler 24 moves up and down with respect to the case 21, it expands and contracts.

  Here, by using the spring 25 for sliding the slide coupler 24 as a compression spring, a stable push-up force can be obtained, and the shift position detecting device 100 can be made compact.

  FIG. 8 is a diagram showing each shift position of the shift lever.

  Here, the shift position H is the home position, and after the shift lever is moved to the shift positions R, N, and D, the shift position H does not stop and returns to the shift position H. The shift position R corresponds to the back gear position of the vehicle, the shift position N corresponds to the neutral gear position of the vehicle, and the shift position D corresponds to the drive gear position of the vehicle.

  The shift position S represents a sport mode for the operator to drive in a desired gear state. When the shift lever is moved to the shift position + or the shift position − via the shift position S, the shift position S is restored. When the shift lever is tilted to the shift position +, the vehicle gear is raised by one step, and when the shift lever is tilted to the shift position-, the vehicle gear is lowered by one step.

  9A to 9C show the positional relationship between the pin 101 and the slide coupler 24 when the shift position of the shift lever is S, H, and N, respectively.

  The pin 101 operates when the shift position moves in the select direction T. When the shift position moves in the shift direction F, the pin 101 is inserted in the recess 51B of the rotary coupler 27. 102 rotates and the rotary coupler 27 rotates.

  In FIG. 9A, the shift position is at the position N. In this state, the tip of the pin 101 does not protrude from the through hole 61B, and the slide coupler 24 receives a pressing force from below with the spring 25. Therefore, a space exists between the upper end of the through hole 61B and the pin 101.

  Further, in FIG. 7B, the shift position of the shift lever is at the H position. In this state, the tip of the pin 101 is slightly protruding from the through hole 61B, and the slide coupler 24 is spring-loaded from below. 25, a space exists between the upper end of the through hole 61B and the pin 101.

  Further, in FIG. 5C, the shift position is at the position S. In this state, the tip of the pin 101 is further protruded from the through hole 61B, and the slide coupler 24 is pushed by the spring 25 from below. Since the pressure is received, a space exists between the upper end of the through hole 61B and the pin 101.

  By adopting a configuration in which the pin 101 can protrude from the through hole 61B in this way, the tolerance for the operation of the pin 101 increases, and the shift position detecting device 100 can be configured thin.

  Even if the pin 101 slides slightly in the horizontal direction, the horizontal width of the through hole 61B is made larger than that of the pin 101, so that the vertical movement of the slide coupler 24 can be taken out efficiently.

  In the above description, the magnetic field detection element 42 is shown as an example of the detection element for detecting the magnetic field of the magnet 52, and the magnetic field detection element 43 is shown as an example of the element for detecting the magnetic field of the magnet 62. The position of the coupler may be detected from a change in capacitance using a capacitance detection element.

  The magnetic field detection elements 42 and 43 and the capacitive element may be packaged as a single IC (Integrated Circuit), or may be formed as a circuit using a plurality of components.

  Further, as shown in FIGS. 10A to 10C, the positional relationship between the rotary couplers 127A to 127C and the magnetic field detection elements 143A to 143C can be variously modified.

  10A, the printed circuit board 141A is provided with a recess 151, and the magnetic field detection element 143A is disposed in the recess 151. FIG. The rotary coupler 127A comes into contact with the film 123A disposed on the upper surface of the printed board 141A. As a result, the distance between the magnet and the magnetic field detection element 143A can be kept small and highly accurate.

  In FIG. 5B, a magnetic field detection element 143B is arranged on the rotary coupler 127B side of the printed board 141B. The rotary coupler 127B contacts the film 123B disposed on the upper surface of the magnetic field detection element 143B. Thereby, the distance between the magnet and the magnetic field detection element 143B can be further reduced and ensured with high accuracy.

  In FIG. 5C, a magnetic field detection element 143C is disposed on the rotary coupler 127C side of the printed board 141C. The magnetic field detection element 143C is packaged with ceramic molded or sintered with resin. The rotary coupler 127C is in contact with the magnetic field detection element 143C. Accordingly, the distance between the magnet and the magnetic field detection element 143C can be further reduced and ensured with high accuracy.

  10A to 10C, the capacitance may be detected, and the position of the slide coupler may be detected.

  As described above, according to the present embodiment, the slide coupler 24 or the rotary coupler 27 that moves linearly in conjunction with the operation of the shift lever, the printed board 41 that supports the slide coupler 24 or the rotary coupler 27, and the printed board. 41 is provided with detection elements such as magnetic field detection elements 42 and 43 which are fixed to 41 and detect the position or rotation angle of the slide coupler 24 or the rotary coupler 27 by a change in electric field or magnetic field. Here, the detection element is arranged at a position facing the slide coupler 24 or the rotary coupler 27 of the printed board 41 with the printed board 41 interposed therebetween. According to this, since the slide coupler 24 or the rotary coupler 27 is supported by the printed circuit board 41, the distance between the slide coupler 24 or the rotary coupler 27 and the detection element is stable, and the shift position detection device 100 suitable for miniaturization is provided. can get.

  Further, since the film 23 is fixed to the printed circuit board 41 and the slide coupler 24 or the rotary coupler 27 is arranged so as to contact the film 23, the frictional resistance when the slide coupler 24 or the rotary coupler 27 slides is reduced. And durability is improved.

  Further, since the first spring 25 is further provided below the through hole 61B, and the slide coupler 24 includes at least two guides 61C and 61D with the first spring 25 interposed therebetween, when the slide coupler 24 slides. Can be suppressed.

  Furthermore, since the top surface portions 31C and 32C of the case 21 are provided with an inclination, even when water droplets are applied to the shift position detecting device 100, the wet water can be quickly drained toward the sensor side surface.

  Moreover, since the top surface portions 31C and 32C form a groove shape in which the outer edge portions 31D and 32D protrude, the wetted water can be rectified and scattered.

  Further, since the depression 151 is provided in the printed board 141A and the detection element is accommodated, the distance between the magnet and the magnetic field detection element 143A can be made small and highly accurate.

  Further, since the detection element is arranged on the side of the printed board 141B facing the rotary coupler 127B, and the detection element is arranged to support the rotary coupler 127B, the distance between the magnet and the magnetic field detection element 143B is further reduced, and High accuracy can be ensured.

  The shift position detecting device according to the present invention is suitable for downsizing and is mainly useful for in-vehicle use.

21 Case 22 Circuit board 23, 123A, 123B Film 24 Slide coupler 25, 26 Spring 26A, 26B End portion 27, 127A-127C Rotary coupler 31 Left case 31A, 32A Substrate placement portion 31B, 32B Through hole 31C, 32C Top surface portion 31D 32D Outer edge portion 31E, 32E Spring accommodating portion 31F Protrusion 32 Right case 32F Circular hole 41, 141A-141C Printed circuit board 42, 43, 143A-143C Magnetic field detection element 44 Connector 51, 61 Main body 51A Spring locking portion 51B, 51C Depression 52, 62 Magnet 61A Spring holding portion 61B Through hole 61C, 61D Guide 61E Protrusion 61F Square hole 100 Shift position detection device 101, 102 Pin 151 Recessed portion

Claims (14)

A coupler that moves linearly or rotates in conjunction with the operation of a shift lever, a substrate that supports the coupler, and a detection element that is fixed to the substrate and detects the position or rotation angle of the coupler by a change in electric field or magnetic field. And a shift position detection device in which the detection element is disposed at a position facing the coupler of the substrate with the substrate interposed therebetween. The shift position detection device according to claim 1, wherein the coupler includes a magnet or an electrode, and the detection element includes a magnetic detection element or a capacitance detection element. The shift position detecting device according to claim 1, wherein a film is fixed to the substrate, and the coupler is disposed so as to contact the film. The shift position detecting device according to claim 1, wherein the coupler is a slide coupler, and the slide coupler includes a through hole into which a pin that tilts in conjunction with an operation of a shift lever is inserted. The shift position detecting device according to claim 4, wherein the width of the through hole is wider than the width of the pin. The shift position detecting device according to claim 4, wherein the slide coupler includes a protrusion below the through hole. The shift position detecting device according to claim 4, further comprising a first spring below the through hole, wherein the slide coupler includes at least two guide rails sandwiching the first spring. The shift position detection device according to claim 1, further comprising a case that houses the coupler, the substrate, and the detection element, and a top surface portion of the case includes an inclination. The shift position detection device according to claim 8, wherein the top surface portion forms a groove shape with an outer edge portion protruding. The shift position detection device according to claim 8, wherein the case includes a left case and a right case, and the left case and the right case are partially overlapped on the top surface portion. The coupler is a rotary coupler, and further includes a second spring that connects the protrusion protruding from the case through the substrate and the rotary coupler, and the second spring is a first end connected to the protrusion. And a second end connected to the rotary coupler, and the second spring is wound at the first end and the second end with respect to the expansion and contraction direction of the second spring. The shift position detecting device according to claim 1, wherein the substrate and the second spring are in contact with each other only at the first end portion so that the central axes are in close contact so as to be orthogonal to each other. The shift position detecting device according to claim 1, wherein the substrate is provided with a recess, and the detection element is housed in the recess. A coupler that moves linearly or rotates in conjunction with the operation of the shift lever, a substrate disposed opposite to the coupler, and a position or rotation angle of the coupler fixed to a position of the substrate facing the coupler. A shift position detection device comprising a detection element for detecting a change in a magnetic field, wherein the detection element supports the coupler. The shift position detection device according to claim 13, wherein a film is fixed to the detection element, and the coupler is disposed so as to contact the film.

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