JP4292515B2 - Pointer-type instrument - Google Patents

Description

  The present invention relates to a pointer-type instrument mounted on a vehicle represented by, for example, an automobile, and in particular, a see-through portion formed of a penetrating portion or a transparent portion is formed in a central region of an indicator plate including a virtual rotation center of the pointer. The present invention relates to a pointer-type instrument (hereinafter, referred to as a centerless-type pointer-type instrument for the sake of convenience) that allows a display device disposed behind the indicator plate to be visually recognized through the section and performs pointer-type display on the outer periphery of the fluoroscopic section.

Conventionally, as a centerless type pointer-type meter, for example, the one described in Patent Document 1 below is known. In order to achieve centerlessness, this pointer-type meter is provided with a ring-shaped moving member (made of synthetic resin) having a gear train on the outer periphery behind an annular indicator plate, and the moving member is provided with a pointer. In addition, a configuration is adopted in which a rotating gear meshing with a gear train is connected, and the rotating gear is rotated through a driving device such as a motor to rotationally drive the moving member to give an indicator portion instruction by a pointer. The moving member is supported by supporting members that are spaced apart in the rotational direction so as to support the outer periphery of the moving member. The support member includes an immovable fixed support member (position immovable roller) whose position does not change and a pressure support member (position movement roller) whose position changes following the moving member. The press support member is a moving member (moving member). In this way, the positional relationship between the pointer and the indicator plate is accurately maintained.
Japanese Patent Laying-Open No. 2004-361182 (FIG. 5)

However, since the pointer-type meter described in Patent Document 1 has a single pressing support member, the load applied to the moving member is concentrated on one point, and the moving member is easily deformed by that amount (particularly at high temperatures). There is. Although it is possible to increase the number of pressing support members to distribute the load, it requires parts and space for the required number of pressing support members, and the increase in the number of parts and occupied space is inevitable. There's a problem.
Accordingly, the present invention aims to provide a pointer-type instrument that can reduce the load applied to the moving member while minimizing the increase in the number of parts and occupied space in order to cope with the above-described problems. is there.

  In order to achieve the above object, the present invention provides an indicator, an indicator plate having an indicator portion corresponding to the indicator, a moving member that supports the indicator and has a first gear train around it, and the first A rotating member having a second gear train that meshes with the gear train; a driving device that rotates the rotating member through a drive shaft to rotate the pointer along the indicator portion; and an inner periphery or an outer periphery of the moving member A support member disposed at an interval in the rotational direction so as to support the support member, the support member including a press support member that presses the moving member in a predetermined direction, and the press support member includes a shaft member and the shaft. At least first and second supports stacked coaxially with respect to a member, and supported rotatably through each of the first and second supports, and rotated as the moving member moves. at least The first and second rotating bodies and a biasing member that biases the first and second supporting bodies so as to press the first and second rotating bodies toward the moving member. And

  Further, the present invention is characterized in that the pressing support member is disposed outside the operating range of the pointer.

  In the invention, it is preferable that the radial circumferential surfaces of the first and second rotating bodies face each other in a direction orthogonal to the extending direction of the shaft member.

  The present invention is also characterized in that the first and second supports have the same structure.

  According to the present invention, each of the first and second supports has a boss portion that protrudes along the shaft member and faces each other, and the boss portion includes a combination of a convex portion and a concave portion. Means is provided.

  According to the present invention, each of the first and second support members has a boss portion that protrudes along the shaft member and faces each other, and a convex portion and a concave portion are provided on each of the opposed portions of the boss portion. A combination of rotation restricting means is provided, and the positions and structures of the convex portion and the concave portion are common to the first and second supports.

  Further, the present invention provides a distance from the axis of the shaft member to a contact portion of the first rotating body with the moving member, and the moving member of the second rotating body from the axis of the shaft member. The distance to the contact point is set to be the same.

  According to the present invention, it is possible to provide a pointer-type instrument that can achieve the initial object and can reduce the load applied to the moving member while minimizing the increase in the number of parts and occupied space.

  Hereinafter, embodiments of a pointer-type instrument according to the present invention will be described with reference to the drawings. 1 to 8 show a first embodiment of the present invention. FIG. 1 is a front view of a pointer-type instrument according to the present embodiment. FIG. 2 is a front view when an indicator plate is removed from FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is a cross-sectional view taken along line BB in FIG. 2, and FIG. 5 is an exploded perspective view of the pressing support member according to the present embodiment as viewed from the direction of arrow AR in FIG. 6 is a cross-sectional view taken along the line CC in FIG. 2, FIG. 7 is a front view showing an urging member according to the present embodiment, and FIG. 8 is a principle diagram illustrating a load applied to the moving member in the present embodiment.

  As shown in FIGS. 1 and 2, the pointer-type instrument according to the present embodiment includes an indicator plate 1, a moving member 2 disposed behind the indicator plate 1, and a pointer 3 attached to the moving member 2. The frame member 4 disposed behind the moving member 3, the driving device 5 that rotates and moves the moving member 2, the display device 6 that displays predetermined information to the observer, and the display device 6. And a circuit board 7.

  The indicator plate 1 has a see-through portion 11 composed of a rectangular through-hole in a substantially central region, and on the outer periphery of the see-through portion 11, characters, scales, and the like arranged in an arc along the movement path of the pointer 3 An indicator unit 12 is provided. These indicator portions 12 are formed on a substrate made of a synthetic resin plate constituting the indicator plate 1 by means such as screen printing.

  The moving member 2 is made of a synthetic resin body formed in, for example, a closed ring shape, and has a gear train (first gear train) 21 that meshes with a rotating member, which will be described later, driven through the driving device 5 on the inner periphery thereof. In addition, in the present example, the gear train 21 is formed from the contact portion 22. The contact portion 22 that contacts the regulating means and the support member, which will be described later, of the driving device 5 is formed respectively (see also FIGS. 3, 4 and 6). Is also provided so as to protrude inward on the back side.

  The pointer 3 is made of a linear synthetic resin body, is attached and fixed to the moving member 2 so that the tip thereof faces the center side, and rotates together with the moving member 2 to indicate the indicator portion 11. The pointer 3 and the indicator 11 are light transmissive and emit light upon receiving light from a light source (not shown).

  The frame member 4 is made of, for example, a substantially annular metal material having a see-through part 11 of the indicator plate 1 and a through part 41 corresponding to the display device 6, and is installed on the circuit board 7. A synthetic resin portion 4a is integrally formed on the required portion of the frame member 4 by, for example, outsert or insert molding, and a protruding portion that receives the bottom of the moving member 2 by point contact at a part of the synthetic resin portion 4a. A thrust receiving part 42 (see also FIGS. 3 and 6) and a holding part for holding a part of a fixed support member 43 and a pressing support member (movable support member) 44 that constitute a radial receiving part that receives the inner periphery of the moving member 2. A portion 45 is formed.

  Two fixed support members 43 are provided along the diameter direction of the moving member 2, and as shown in FIG. 3, each roller 431 is made of a flexible synthetic rubber or synthetic resin, and the roller 431 is rotatable. The first support shaft part 432 made of metal, for example, is supported, and the roller 431 can be rotated so that the bearing clearance can be moved. However, such bearing clearance, component rigidity, dimensional change, etc. In other words, the roller 431 position (support shaft portion 432 position) is basically configured so that it does not change (becomes immovable) except for the inevitable movement in the design.

  The roller 431 is configured such that its peripheral surface comes into contact with the contact portion 22 of the moving member 2 and rotates according to the movement of the moving member 2. At this time, as shown in detail in FIG. 3, the peripheral surface of the roller 431 is set to be a curved surface, and the contact portion 22 is set to be an inclined surface, and both are in line contact. In this case, the holding portion 45 has a holding hole for press-fitting and holding the first support shaft portion 432.

  One (one set) of pressing support members 44 is provided at a position facing a driving shaft 51 (described later) of the driving device 5 in the diameter direction of the moving member 2. As shown in FIGS. 4 and 5, the pressing support member 44 includes a single shaft member 441 and first and second supports 442 that are stacked so as to be coaxially rotatable with respect to the shaft member 441. , 443, first and second rotating bodies 444 and 445 which are rotatably supported through the first and second support bodies 442 and 443 and rotate as the moving member 4 moves, and the first and second rotating bodies 444 and 445, respectively. , And an urging member 446 for urging the first and second support bodies 442 and 443 so as to press the second rotating bodies 444 and 445 toward the moving member 2 side.

  The shaft member 441 is made of a metal material like the first support shaft portion 432, and is press-fitted and held in a holding hole provided in the holding portion 45.

  The first and second support bodies 442 and 443 are formed in an arm shape using a synthetic resin material, and the first and second support bodies 442 and 443 are common parts having the same dimensions (structure). Become.

  That is, the first and second support members 442 and 443 include base portions 442a and 443a that are supported so as to be coaxially rotatable through the shaft member 441, and tip portions 442b that are on the side close to the contact portion 22 of the moving member 2. 443b and groove-like urging member support portions 442c and 443c that receive and hold a part of the urging member 446 are provided.

  The base portions 442a and 443a protrude through the through holes 442d and 443d through which the shaft member 441 passes and are opposed to each other along the shaft member 441. The boss portions 442e and 442e are provided with extensions of the through holes 442d and 443d inside. 443e is formed. In the case of this example, the hole diameters of the through holes 442d and 443d are set larger than the outer diameter of the shaft member 441 so that the first and second support bodies 442 and 443 can rotate with the shaft member 441 as a base point. It has become.

  The boss portions 442e and 443e are respectively formed with convex portions 442f and 443f and concave portions 442g and 443g. Of these convex portions 442f and 443f and concave portions 442g and 443g, the convex portions 442f and the concave portions 443g and the convex portions 443f are formed. And the concave portion 442g are combined so as to correspond to each other to constitute the rotation restricting means 447.

  That is, the biasing member 446 is interposed between the first and second supports 442 and 443 (the boss portions 442e and 443e are inserted into the biasing member 446), and the biasing member 446 is disposed. Each end is received and held by the urging member support portions 442c and 443c, and in the temporarily assembled state in which the shaft member 441 is passed through each of the through holes 442d and 443d, the convex portion 442f contacts the circumferential wall portion of the concave portion 443g. As the projection 443f comes into contact with the circumferential wall portion of the recess 442g, the angle θ between the first and second supports 442 and 443 with the shaft member 441 as a base point is set to a specific angle (this In the example, the rotation is restricted so that it does not narrow below 100 degrees. Although the urging action of the urging member 446 will be described later, the angle θ between the first and second supports 442 and 443 urged in the direction narrowed by the urging member 446 is not reduced more than necessary. The rotation restricting means 447 defines a lower limit angle (see θmin which is the angle between the longitudinal axes L1a and L2a of the supports 442 and 443 in FIG. 7), and the workability is improved by performing the assembly work in this state. It is something to be made.

  In addition to the function of preventing the angle θ from becoming unnecessarily small as described above, the rotation restricting means 447 has an upper limit angle (in FIG. 7, each support body 442, 443 in order to prevent the angle θ from becoming unnecessarily large). Of the longitudinal axes L1b and L2b of the lens (see θmax), and an overload caused by the angle θ becoming larger than necessary with the biasing member 446 incorporated (overload) ) Is prevented.

  Support holes 442h and 443h (see FIG. 4) are formed in the front end portions 442b and 443b. For example, metal holding shafts 448 and 449 are press-fitted and fixed in the support holes 442h and 443h, respectively. Rotating bodies 444 and 445 are pivotally supported on the shaft 449.

  At this time, each of the holding shafts 448 and 449 extends in parallel with the shaft member 441. However, in the assembled state of the first and second support bodies 442 and 443, the first and second support bodies 442 and 443 are provided. The projecting directions of the rotating bodies 444 and 445 are set in the axial direction (the extending direction of the shaft member 441) in the assembled state of the first and second support bodies 442 and 443. ), The peripheral surfaces are opposed to each other so as to have the same height. This is to make the height of each of the rotating bodies 444 and 445 as equal as possible, thereby minimizing the thickness in the height direction (axial direction) of the moving member 2 and contributing to the promotion of thinning. That is, as the height position of each of the rotating bodies 444 and 445 increases, the thickness of the moving member 2 increases, leading to an increase in the size of the apparatus.

  Here, in the present example, the first and second support bodies 442 and 443 have the same structure as described above. However, in this example, the structures of the rotating bodies 444 and 445 and the holding shafts 448 and 449 are also different. Further, the combination of the support bodies 442 and 443, the rotary bodies 444 and 445, and the holding shafts 448 and 449, which are the same parts as described above, is 180 degrees different as shown in FIGS. The pressing support member 44 is configured by assembling in the direction. In the assembled state, the lower end of the shaft member 441 is press-fitted and fixed to the holding portion 45, and the holding member 45 is inserted and held in the holding portion 45 corresponding to the press-fitting of the shaft member 441. A hole is provided.

  The first and second rotating bodies 444 and 445 are made of flexible synthetic rubber or synthetic resin, like the roller 431, and their peripheral surfaces come into contact with the contact portion 22 of the moving member 2 and respond to the movement of the moving member 2. Are configured to rotate. At this time, as shown in detail in FIG. 4, the peripheral surfaces of the rotating bodies 444 and 445 are set to be curved surfaces, and are configured to be in line contact with the contact portion 22 that is an inclined surface.

  The urging member 446 is formed of, for example, a coil spring (torsion spring) formed by winding a metal wire in a coil shape, and the first boss portions 442e and 443e are inserted through the body portion (coil portion) 446a. The first and second end portions 446b and 446c arranged between the second support bodies 442 and 443 and continuing to the body portion (coil portion) 446a are bent so as to be parallel to the shaft member 441. , Urging member support portions 442c and 443c of the second supports 442 and 443 are held.

  The urging member 446 has an angle θcn formed by the end portions 446b and 446c (see the dotted line in FIG. 7) in a state before assembly (natural state), and is in a state after assembly described later. Is set to be smaller than an angle θcp formed by the end portions 446b and 446c (see the solid line in FIG. 7). As a result, the angle θcp is set so as to increase after assembly, so that a force (returning force) for returning to the original state (θcn which is a natural state) always works, and this returning force causes the first and second The support members 442 and 443 are urged in such a direction that the angle θ formed therebetween reaches the lower limit angle θmin (100 degrees in this example), and this urging force is finally applied to the first and second rotating bodies. It becomes the load which presses 444,445 to the moving member 2 side.

  That is, in the assembled state where the first and second rotating bodies 444 and 445 are in contact with the moving member 2, as shown in FIG. 7, the longitudinal axes L1 and L1 of the first and second supports 442 and 443 are shown. By setting the angle θ formed by L2 to be larger than the lower limit angle θmin (in this example, set to 127 degrees), the tension (pressing load) based on the return force of the biasing member 446 is set to the first and second values. It is applied along the radial direction (outside) of the moving member 2 via the rotating bodies 444 and 445, so that the moving member 2 is deformed along with the dimensional accuracy of the parts, assembly errors, expansion and contraction due to thermal effects, etc. Or even if it is displaced, the pressing support member 44 is made to follow the deformation of the moving member 2 and the like, thereby realizing stable support.

  In this case, for example, when the moving member 2 contracts and the inner diameter becomes smaller, the angle θ formed by the first and second support members 442 and 443 increases and approaches the upper limit angle θmax (190 degrees in this example). Conversely, when the inner diameter is increased, the angle θ is decreased, and the deformation of the moving member 2 is absorbed so as to approach the lower limit angle θmin.

  Further, in this case, when attention is paid to the arrangement position of the pressing support member 44, in this example, the indicator 3 is arranged on the arrangement track or the vicinity of the moving member 2 and in the range where the pointer 3 does not rotate. That is, as shown in FIG. 2, the pointer 3 has a movable range Ra in which the pointer 3 is rotated and the indicator portion 12 is instructed, and a non-moving range Rb in which the pointer 3 is not rotated and the indicator portion 12 is not instructed. And the pressing support member 44 is disposed in the non-moving range Rb, so that the vicinity of the pressing support member 44 in which the deviation of the trajectory or disturbance of the pointer 3 is large can be disposed in the non-moving range Rb that is not used for the pointer instruction. Even if a deviation or disturbance of the pointer trajectory occurs due to the deformation or displacement of 2, the influence on the visibility can be reduced.

  Further, in this example, the first and second support bodies 442 and 443 and the first and second rotating bodies 444 and 445 are constituted by the same component, and the first support that pivotally supports the first rotating body 444. Since the base 442a of the body 442 and the base 443a of the second support 443 that pivotally supports the second rotating body 445 are configured to be coaxially rotatable with the common shaft member 441 as a base point, the shaft member 441 The distance D1 from the first rotating body 444 to the contact point P1 with the moving member 2 is equal to the distance D2 from the shaft member 441 to the contact point P2 with the moving member 2 of the second rotating body 445 (FIG. 8). See), the isosceles triangle is formed by connecting the shaft member 441 and the contact points P1 and P2, so that the magnitude of the tension load received by the moving member 2 moves at the contact point between the pressing support member 44 and the moving member 2. When the member 2 moves clockwise (CW) In the time of movement counterclockwise (CCW), since there is no principle variation can be suppressed imbalance of the tension load based on the rotation direction.

  That is, as shown in FIG. 8, a load (tension load) F1 is applied to the first rotating body 444 side by the pressing force, and the moving member 2 is divided into a tangential direction composed of F1sin θ based on the load F1. Force is generated.

  On the other hand, a load (tension load) F2 is applied to the second rotating body 445 side by the pressing force, and a tangential component force consisting of F2sin θ is generated in the moving member 2 based on the load F2.

  The distance D1 from the shaft member 441 to the contact point P1 with the moving member 2 of the first rotating body 444, and the distance D2 from the shaft member 441 to the contact point P2 with the moving member 2 of the second rotating body 445 Therefore, the reaction force (F1sin θ) during rotation in the CW direction is equal to the reaction force (F2sin θ) during rotation in the CCW direction, thereby suppressing the unbalance of the tension load based on the rotation direction. In FIG. 8, F1 cos θ and F2 cos θ are vertical component forces of the loads F1 and F2 received by the moving member 2.

  Here, if there is no second support 443 that pivotally supports the second rotating body 445, a reaction force (F1 sin θ) is generated when rotating in the CW direction, but no reaction force is generated when rotating in the CCW direction. For this reason, an imbalance of the tension load based on the rotation direction occurs, leading to, for example, a decrease in indication accuracy and occurrence of hysteresis.

Next, the description will be shifted to the explanation other than the support members 43 and 44.
The drive device 5 is composed of, for example, a stepping motor, and is connected and fixed on the circuit board 7 as shown in detail in FIG. 6, and the drive shaft 51 extends forward beyond the frame member 4. Means 53 are provided.

  The rotating member 52 is made of a synthetic resin body having a gear train (second gear train) 54 that meshes with the gear train 21 of the moving member 2 on the outer periphery thereof, and is fixed so as to rotate together with the drive shaft 51.

  The restricting means 53 is formed to be larger than the outer diameter of the gear train 54 forming portion by utilizing a part of the rotating member 52, rotates in contact with the contact portion 22 of the moving member 2, and each gear train 21, 54. By restricting the meshing depth, the meshing depths of the gear trains 21 and 54 become too deep, and an excessive load is applied to the drive device 5 and the gear trains 21 and 54 are prevented from being locked. Can do. The shape (cross-sectional shape) of the regulating means 53 is set to a curved surface so as to be in line contact with the contact portion 22.

  In this example, the rotating member 52 and the regulating means 53 are the same component, but may be separate components.

  The display device 6 is composed of, for example, a liquid crystal display device, and is mounted on the circuit board 7 so as to face the see-through portion 11 of the index plate 1. For example, measurement information or navigation information including travel distance data or outside air temperature data, and the like. Is displayed.

  The pointer type instrument of the present embodiment configured as described above is set so that the drive shaft 51 of the drive device 5 rotates according to the measurement amount, and the rotation of the rotation member 52 by the rotation of the drive shaft 51 causes the rotation. The moving member 2 having the gear train 21 meshing with the gear train 54 of the member 52 rotates, and the pointer 3 provided on the moving member 2 indicates the indicator portion 12 on the outer periphery of the fluoroscopic portion 11 facing the display device 6.

  As described above, the pointer-type meter according to the present embodiment has the pointer 3, the indicator plate 1 having the indicator portion 12 corresponding to the pointer 3, the first gear train 21 around the pointer 3 and the periphery. A rotating member 52 having a moving member 2, a second gear train 54 that meshes with the first gear train 21, and rotating the rotating member 52 through the drive shaft 51, the pointer 3 is rotated along the indicator portion 12. And a support member 43, 44 disposed at intervals in the rotation direction so as to support the inner periphery or the outer periphery of the moving member 2, and the support member 43, 44 supports the moving member 2 in a predetermined direction. A pressing support member 44 that presses the shaft member 441, the pressing support member 44 is a shaft member 441, first and second supports 442 and 443 that are stacked so as to be coaxially rotatable with respect to the shaft member 441, and these 1st and 2nd branch The first and second rotating bodies 444 and 445 that are rotatably supported through the bodies 442 and 443 and rotate as the moving member 2 moves, and the first and second rotating bodies 444 and 445 are moved to the moving member. And a biasing member 446 that biases the first and second support bodies 442 and 443 so as to press toward the second side, thereby adding to the moving member while minimizing an increase in the number of parts and occupied space. The load can be reduced.

  That is, the base member 442 of the first support body 442 that pivotally supports the first rotating body 444 and the base portion 443a of the second support body 443 that pivotally supports the second rotating body 445 are used as a common shaft member 441. Since it is configured to be coaxially rotatable as a base point, for example, a plurality of dedicated shaft members are provided according to the individual rotating bodies 444 and 445, or dedicated parts and structures for supporting such shaft members are employed. Since there is no need, an increase in the number of parts and occupied space can be minimized. In addition, since the moving member 2 is supported by the first and second rotating bodies 444 and 445, the load applied to the moving member can be dispersed.

  In this embodiment, the pressing support member 44 is arranged outside the operating range (non-moving range Rb) of the pointer 3 so that the vicinity of the pressing support member 44 where the deviation or disturbance of the pointer 3 is large is not used for the pointer instruction. It can be arranged in the range Rb, and the influence on the visibility can be reduced even if the displacement or disturbance of the pointer track occurs due to the deformation or displacement of the moving member 2.

  Further, in the present embodiment, the radial dimensions of the first and second rotating bodies 444 and 445 are opposed to each other in a direction perpendicular to the extending direction of the shaft member 441, thereby suppressing the height of the device. Can do. In the present embodiment, the positions of the first and second rotating bodies 444 and 445 are set to be the same, but at least the radial circumferential surfaces of the first and second rotating bodies 444 and 445 are extended by the shaft member 441. What is necessary is just the structure which opposes the direction orthogonal to a present direction.

  In the present embodiment, since the first and second support bodies 442 and 443 have the same structure, it is possible to reduce the cost of parts and the management cost and to reduce the cost by sharing parts. it can.

  In the present embodiment, each of the first and second support members 442 and 443 has boss portions 442e and 443e that protrude along the shaft member 441 and face each other, and the boss portions 442e and 443e have convex portions. By providing the rotation restricting means 447 formed by combining 442f, 443f and the recesses 442g, 443g, it is possible to improve the assembling workability and prevent overload.

  In the present embodiment, each of the first and second supports 442 and 443 has a boss portion that protrudes along the shaft member 441 and faces each other, and a convex portion 442f at each facing portion of these boss portions. , 443f and recesses 442g and 443g are provided, and the position and structure of the projections 442f and 443f and the recesses 442g and 443g are common to the first and second supports 442 and 443. As a result, it is possible to improve the assembly workability and prevent overloading, while achieving cost reduction by sharing parts.

  Further, in this embodiment, the distance D1 from the axis of the shaft member 441 to the contact point P1 with the moving member 2 of the first rotating body 444, and the moving member of the second rotating body 445 from the axis of the shaft member 441. Since the distance D2 to the contact point P2 of 2 is set to be the same, an isosceles triangle is formed when the shaft member 441 and the contact points P1 and P2 are connected to each other. The tension load received by the moving member 2 at the contact point can be less varied between the clockwise (CW) movement of the moving member 2 and the counterclockwise (CCW) movement, and the tension load based on the rotational direction. Can be suppressed.

  FIG. 9 is a schematic configuration diagram showing a second embodiment of the present invention. In this embodiment, two (one set) pressing support members 44 adopted in the first embodiment are provided ( 2 sets), three fixed support members 43 are provided. When the contact point between the fixed support member 43a and the moving member 2 is connected to the center of the shaft member 441 of each pressing support member 44 (44a, 44b), isosceles sides A triangle is formed, and an isosceles triangle is formed by connecting the center of the shaft member 441 of the pressing support member 44a and the fixed support members 43a and 43c, and the center of the shaft member 441 of the pressing support member 44b and the fixed support member 43a. , 43b are connected to form an isosceles triangle. Thus, by arranging the contact point and the pressing support member 44 with the isosceles triangle as a reference, the imbalance based on the rotation direction due to the layout of the support members 43 and 44 can be minimized. The number of fixed support members 43 and moving support members 44 can be set arbitrarily.

  FIG. 10 is a cross-sectional view of an essential part showing a third embodiment of the present invention. In this embodiment, for example, a holding frame (for example, made of synthetic resin) 8 having a cross-sectional shape of “U” is prepared. A pressing support member 44 is assembled and fixed to the holding frame 8.

  The holding frame 8 is formed with, for example, a hook-shaped attachment portion 81. By engaging the attachment portion with the frame member 4, the pressing support member 44 assembled and fixed in advance to the holding frame 8 is framed. It is configured so that it can be fixed to the member 4 with one touch, and the assembly workability is improved. The attachment portion 81 may have any structure that can fix the pressing support member 44 assembled and fixed to the holding frame 8 in advance to the frame member 4 regardless of the hook shape. You may set the location which can be fixed to.

  In each of the above-described embodiments, two supports, that is, first and second supports 442 and 443 are provided with the shaft member 441 as a reference, and each of the first and second supports 442 and 443 has two. Although the case where two rotating bodies, that is, the first and second rotating bodies 444 and 445 are provided is shown, the number of supports is arbitrary as long as a plurality of rotating bodies are arranged on the basis of one shaft member 441 ( For example, in addition to the first and second supports, third, fourth,... Supports can be provided, and all these supports can be coaxially supported through the shaft member 441). The number of supported rotating bodies is also arbitrary, one shaft member, at least one urging member (a plurality may be allowed depending on the number of supporting bodies, etc.), and at least two supporting bodies and rotating bodies each. It only has to have one by one. In the present embodiment, an urging member made of a coil spring (torsion spring) has been exemplified. However, the urging member may be of any material, shape, and type as long as it urges the support, such as a plate spring or a resin spring. It is. Moreover, in each said embodiment, although the supporting member was provided inside the moving member 2, you may provide outside.

The front view of the pointer type instrument by one Embodiment of this invention. The front view at the time of removing the indicator plate in FIG. AA sectional drawing of FIG. BB sectional drawing of FIG. The disassembled perspective view when the press support member by the embodiment is seen from the arrow AR direction in FIG. CC sectional drawing of FIG. The front view which shows the urging | biasing member by the embodiment. The principle figure explaining the load added to a moving member in the embodiment. The schematic block diagram which shows the 2nd Embodiment of this invention. Sectional drawing which shows the principal part which shows the 3rd Embodiment of this invention.

Explanation of symbols

1 Indicator plate 2 Moving member 2
3 Guideline 3
4 Frame member 4a Synthetic resin part 5 Drive device 5
6 Display device 6
7 Circuit board 7
8 Holding frame 11 Perspective section 12 Index section 21 Gear train (first gear train)
22 Contact portion 41 Through portion 42 Thrust receiving portion 43, 43a, 43b, 43c Fixed support member 44, 44a, 44b Press support member 45 Holding portion 51 Drive shaft 52 Rotating member 53 Restricting means 54 Gear train (second gear train)
81 Mounting portion 431 Roller 432 First support shaft portion 441 Shaft member 442, 443 First and second support bodies 442a, 443a Base portion 442b, 443b Tip portion 442c, 443c Biasing member support portion 442d, 443d Through hole 442e, 443e Boss part 442f, 443f Convex part 442g, 443g Concave part 444, 445 First and second rotating body 446 Energizing member 447 Rotation restricting means 442h, 443h Support hole 448, 449 Holding shaft 446a Body part 446b, 446c First, Second end AR Arrow CW Clockwise CCW Counterclockwise D1, D2 Distance F Load F1sinθ, F2sinθ Tangential component force F1cosθ, F2cosθ Vertical component force L1, L1a, L1b, L2, L2a, L2b Longitudinal axis P1, P2 contact point Ra movable range Rb Non-moving range θ, θcn, θcp, θtp angle θmin lower limit angle θmax upper limit angle

Claims (7)

Guidelines,
An indicator plate having an indicator portion corresponding to this guideline;
A moving member that supports the pointer and has a first gear train around it;
A rotating member having a second gear train meshing with the first gear train;
A driving device for rotating the pointer along the indicator portion by rotating the rotating member through a driving shaft;
A support member arranged at intervals in the rotational direction so as to support the inner periphery or outer periphery of the moving member;
The support member includes a pressing support member that presses the moving member in a predetermined direction,
The pressing support member is supported by a shaft member, at least first and second supports stacked so as to be coaxially rotatable with respect to the shaft member, and rotatably through each of the first and second supports. And at least first and second rotating bodies that rotate as the moving member moves, and the first and second supporting bodies so as to press the first and second rotating bodies toward the moving member. A pointer-type instrument characterized by comprising an urging member for urging the valve. The pointer-type meter according to claim 1, wherein the pressing support member is disposed outside the operating range of the pointer. 2. The pointer-type instrument according to claim 1, wherein the radial circumferential surfaces of the first and second rotating bodies face each other in a direction orthogonal to the extending direction of the shaft member. The pointer-type meter according to claim 1, wherein the first and second supports have the same structure. Each of the first and second support members has a boss portion that protrudes along the shaft member and faces each other, and rotation control means is provided by combining the boss portion with a convex portion and a concave portion. The pointer-type meter according to claim 1, wherein Each of the first and second support members has a boss portion that protrudes along the shaft member and is opposed to each other, and a rotation restriction formed by combining a convex portion and a concave portion at each of the opposed portions of the boss portion. 5. The pointer-type meter according to claim 4, wherein means are provided, and the positions and structures of the convex portion and the concave portion are common to the first and second supports. The distance from the shaft center of the shaft member to the contact portion with the moving member of the first rotating body, and the distance from the shaft center of the shaft member to the contact portion with the moving member of the second rotating body The pointer-type meter according to claim 1, wherein the two are set to be the same.

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