JP5201474B2 - Pointer-type instrument - Google Patents

Description

  The present invention relates to a pointer-type meter in which an indicator portion is indicated by a pointer extending around a display means such as a dial or a liquid crystal display.

As this type of pointer-type instrument, for example, one described in Patent Document 1 below is known. This pointer-type meter has a display means comprising a dial plate and a liquid crystal display, a drive body such as a stepping motor disposed on the back side of the display means, and a back face of the display means mounted on the rotation shaft of the drive body. An arm portion that detours from the side to the side surface and a pointer that is connected to the arm portion and indicates an indicator portion provided on the dial. In this case, the arm portion is a back surface of the display means. The first arm portion is located on the side of the display means and the second arm portion is located on the side surface of the display means, and the first and second arm portions are continuous via a bent portion that bends 90 degrees.
JP 2003-014508 A

  However, since the pointer-type instrument described in Patent Document 1 has a structure in which the arm portion is bent in an L shape via the bent portion, the twist direction and the tilt direction (first and second arm portions) It is weak against vibrations in the direction in which the angle formed becomes smaller, and improvement has been desired in terms of earthquake resistance.

  In this respect, if the width of the arm portion is increased, the rigidity can be increased. However, various problems such as an adverse effect on the pointer operation due to an increase in weight and an increase in load on the drive main body occur.

  Therefore, the present invention pays attention to the above-mentioned problems, and an object thereof is to provide a pointer-type instrument capable of improving the earthquake resistance without increasing the weight or minimizing the increase in weight.

The present invention relates to a display means, a drive main body disposed on the back side of the display means, an arm portion that is mounted on a rotation shaft of the drive main body and detours from the back surface to the side surface of the display means, and the arm portion. A pointer that is connected or continuously formed and that indicates an indicator portion, and a first arm portion that is located on the back surface of the display means and a second arm that is located on a side surface of the display means. And the first and second arm portions are connected via a bent portion, and the arm portion is the first arm portion, and the first arm portion extends from the bent portion. A first portion on the rotating shaft side by a predetermined distance and a second portion on the second arm portion that is a second predetermined distance from the bent portion and on the pointing portion side are the first portion. The second arm portion has a connecting portion that connects the space portions with a space therebetween. The features.
With this configuration, even if the arm part is bent, the rigidity of the twisting direction and the torsional direction is improved by the connecting part, so that it is possible to improve the earthquake resistance without increasing the weight or minimizing the weight increase. Can be improved.

According to the present invention, the space portion includes a first side facing the first arm portion, a second side facing the second arm portion, and a third side facing the coupling portion. And the second side is formed longer than the first side.
With this configuration, the weight of the free end side of the pointer is suppressed by bringing the formation start point of the space portion closer to the free end side of the pointer, thereby reducing the moment of inertia.

According to the present invention, the first arm portion has a rotating shaft mounting portion that is mounted on the rotating shaft, and the lateral width on the bent portion side is formed smaller than the lateral width of the rotating shaft mounting portion. Features.
With this configuration, the weight on the free end side of the pointer can be suppressed, and the moment of inertia can be reduced.

According to the present invention, the rotating shaft mounting portion is formed as a thick portion having a thickness larger than that of the first arm portion region from the rotating shaft mounting portion toward the bent portion. It has a through hole penetrating in the axial direction, and the rotating shaft is mounted so as to penetrate the thick part through the through hole.
With this configuration, the center of gravity of the pointer can be brought closer to the main body of the drive main body, thereby further improving the earthquake resistance.

  According to the present invention, it is possible to provide a pointer-type instrument that can achieve the intended purpose and can improve the earthquake resistance without increasing the weight or minimizing the increase in weight.

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  The pointer-type meter according to the present embodiment displays, for example, the speed of a vehicle, and includes a pointer 6 including a display unit 1 that is a display unit, a drive main body 2, an arm unit 3, a weight 4, and an instruction unit 5. A first light source 7 that is provided on the pointer main body 6 and causes the indicator 5 to emit light, a circuit board 8, a second light source 9 mounted on the circuit board 8, a first light source 7 and a circuit A flexible substrate 10 that electrically connects the substrate 8 is provided.

  In addition, 12 is a housing, 13 is a turning member, and 14 is a frame.

  The display unit 1 includes a display 15, a storage case 16 that stores the display 15, and a front cover 17 that covers an opening 16 a of the storage case 16. The display means 1 is fixed to the circuit board 8 by appropriate means.

  The display 15 displays information related to the vehicle. As information about the vehicle, route guidance, a warning display about the vehicle, an outside temperature of the vehicle, and the like are displayed.

  The display 15 uses a dot matrix liquid crystal display element 18 to display the above information. Reference numeral 19 denotes a liquid crystal light source that illuminates the liquid crystal display element 18, 20 denotes an optical member that condenses or diffuses light from the light source 19, and 21 denotes the liquid crystal display element 18, the light source 19, and the light source 19. A case that houses the optical member 20, and 22 is a cover that covers the case 21. The cover 22 is provided with a window 23 through which the liquid crystal display element 18 is exposed. The case 21 is provided with a support column 24, and the display unit 15 is fixed to the storage case 16 by the support column 24.

  The storage case 16 is made of a light-shielding synthetic resin and has a cup shape. In addition, the storage case 16 is provided with an opening 25 for taking in light from the second light source 9. A plurality of openings 25 are provided.

  The front cover 17 is made of a transparent synthetic resin, and the inside of the display unit 15 and the storage case 16 can be visually confirmed. The front cover 17 fulfills the function of a dial and includes an indicator portion M made of characters representing speed. The indicator portion M is formed on the back surface (the lower surface in FIG. 2) of the front cover 17 by fine unevenness. In addition, a wall portion 27 is provided around the plate surface of the front cover 17 so as to hang down in the direction of the drive main body 2. The wall portion 27 plays a role of fixing the front cover 17 to the storage case 16 and a role of taking in light from the second light source 9. The indicator part M provided on the front cover 17 is illuminated by light taken into the storage case 16 through the opening 25 and light taken from the wall part 27 of the front cover 17.

  The drive main body 2 is an electric motor such as a cross coil instrument main body or a stepping motor, and includes a rotating shaft 26 that rotates, and rotates the pointer main body 6.

  The pointer 6 includes an arm part 3, a weight 4 and an instruction part 5.

  The arm portion 3 is made of, for example, a synthetic resin having a light shielding property, and has an L shape so as to bypass the outer periphery of the display unit 1. The arm portion 3 holds the indication portion 5 at one end and the drive body at the other end 2 is attached to the rotary shaft 26.

  The arm portion 3 includes a first arm portion 31 located on the back surface of the display means 1 and a second arm portion 32 located on the side surface of the display means 1, and these first and second arm portions. 31 and 32 are continuing through the bending part 33 bent about 90 degree | times.

  As shown in FIG. 3, the arm portion 3 includes a first arm portion 31 that is a first predetermined distance L <b> 1 from the corner (vertex) of the bent portion 33 and on the rotation axis side. It has a connecting portion 34 that connects P1 and the second portion P2 that is the second arm portion 32 and that is a second predetermined distance L2 from the corner (vertex) of the bent portion 33 and that is on the pointing portion 5 side. The connecting portion 34 is formed in the form of braces extending diagonally across the space S from the first and second arm portions 31 and 32 and the bent portion 33.

  The connecting portion 34 connects the arm portions 31 and 32 in a brace form, thereby allowing the twisting direction of the arm portion 3 indicated by the double arrow A1 and the tilting direction of the arm portion 3 indicated by the double arrow A2 in FIG. The rigidity is improved.

  Further, in the present embodiment, the space portion S includes the first side S1 facing the first arm portion 31, the second side S2 facing the second arm portion 32, and the first side facing the connecting portion 34. It has a triangular shape having three sides S3, and the second side S2 is formed longer than the first side. By forming the second side S2 long in this way, the formation start point of the space S can be brought closer to the free end side (tip end side) of the pointer 6, thereby reducing the weight of the free end side of the pointer 6. The moment of inertia is reduced.

  Furthermore, in the present embodiment, the first arm portion 31 has a rotating shaft mounting portion 35 that is mounted on the rotating shaft 26, and the lateral width of the first arm portion 31 is from the bent portion 33 as shown in FIG. 4. It is formed so as to gradually increase toward the rotating shaft mounting portion 35 and to become the maximum at the rotating shaft mounting portion 35. Thus, by forming the lateral width on the bent portion 33 side smaller than the lateral width W of the rotating shaft mounting portion 35, the weight on the free end side of the pointer 6 is suppressed, and the moment of inertia is reduced.

  Further, in this embodiment, the rotating shaft mounting portion 35 is formed as a thick portion having a thickness larger than that of the first arm portion 31 region from the rotating shaft mounting portion 35 toward the bent portion 33, and is formed as this thick portion. A through hole 36 penetrating in the axial direction of the rotating shaft 26 is formed in the rotating shaft mounting portion 35, and the tip of the rotating shaft 26 is provided so as to pass through the rotating shaft mounting portion 35 through the through hole 36. By passing the tip of the rotary shaft 26 in this way, the center of gravity of the pointer 6 can be brought close to the main body of the drive main body 2, thereby further improving the earthquake resistance.

  As shown in detail in FIG. 5, the second arm portion 32 has an insertion portion 37, a first notch portion (first positioning portion) 38, and a protruding portion 39 on the distal end side. .

  The insertion part 37 is press-fitted into an insertion hole (described later) of the instruction part 5 when the instruction part 5 and the second arm part 32 are connected, and extends in a pin shape along the insertion hole.

  The first cutout portion 38 is configured so that the second cutout portion (second positioning portion) of the indication portion 5 fits in the rotation direction and height of the indication portion 5 when the indication portion 5 is inserted into the insertion portion 37. Position in the vertical direction. The positioning of the instruction unit 5 in the height direction may be performed on the end surface on the distal end side of the second arm unit 32 excluding the insertion unit 37.

  The protrusion 39 is formed at the center of the side wall surface of the first cutout 38, and the indicator 5 corresponding to the protrusion 39 is formed with a groove extending along the protrusion 39. The inclination of the indicating portion 5 is suppressed by fitting the protruding portion 39 to the ridge portion.

  The instruction unit 5 includes a first portion 51 extending along the second arm portion 32 and a second portion 52 extending along the front cover 17 and indicating the indicator portion M.

  The first portion 51 includes a second cutout portion 53 corresponding to the first cutout portion 38, a groove portion 54 corresponding to the protrusion 39, and an insertion hole 55 corresponding to the insertion portion 37 (see FIG. 3). ), An air escape portion 56 that allows air to escape when the insertion portion 37 is inserted into the insertion hole 55, and a concave portion 57 that houses the first light source 7.

  The 1st light source 7 consists of a light emitting diode, and supplies light to the instruction | indication part 5 (1st part 52), and makes it light-emit. The first light source 7 is mounted on the flexible substrate 10, and the flexible substrate 10 is fixed to the second arm portion 32.

  The circuit board 8 is disposed on the back side (lower side in FIG. 2) of the display unit 1. The circuit board 8 is a board made of a hard insulating material made of glass epoxy resin or the like. The display unit 1, the drive body 2, the second light source 9 and the frame 14 are fixed to the circuit board 8. The surface of the circuit board 8 is provided with a conductor (not shown), and power is supplied to the display 15 of the display means 1, the drive main body 2 and the second light source 9 through this conductor.

  The second light source 9 is composed of a light emitting diode, and illuminates the periphery of the display 15 of the display means 1, the inside of the storage case 16, and the indicator portion M.

  The flexible substrate 10 is a substrate made of a soft insulating material such as polyimide, and includes a conductor (not shown). The flexible substrate 10 has a first light source 7 mounted on one end, and is electrically connected to the circuit substrate 8 with a connector (not shown) on the other end.

  The housing 12 is made of a light-shielding synthetic resin and houses components of the pointer-type instrument device such as the display unit 1, the drive body 2, the pointer body 6, and the circuit board 8.

  The facing member 13 is made of a light-shielding synthetic resin and is provided in the opening 12 a of the housing 12. The turning member 13 is integrally formed with a scale 29 constituting an indicator portion. This scale 29 represents the speed of the vehicle together with the indicator portion M provided on the front cover 17.

  The frame 14 is made of white synthetic resin and is a reflector that efficiently reflects the light from the second light source 9 to the display unit 1. The frame 14 includes a first reflector 14a that reflects the light from the second light source 9 so as to radiate outward about the rotation axis 26, and the light reflected by the first reflector 14a is a display unit. And a second reflector 14b that reflects toward the first side.

  As described above, in this embodiment, the display unit 1, the drive main body 2 disposed on the back side of the display unit 1, and the rotation shaft 26 of the drive main unit 2 are attached to the display unit 1 from the back side to the side surface. And an arm 6 that bypasses the arm 6 and a pointer 6 that is connected or continuously formed with the arm 3 and points to the indicator M. The arm 3 is located on the back surface of the display means 1. In a pointer-type meter having one arm portion 31 and a second arm portion 32 positioned on the side surface of the display means 1, and the first and second arm portions 31 and 32 are continuous via a bent portion 33. The arm portion 3 is the first arm portion 31 and is the first portion P1 and the second arm portion 32 on the rotating shaft 26 side by a first predetermined distance L1 from the corner of the bent portion 33. A second portion that is the second predetermined distance L2 from the corner portion of the bent portion 33 and that is on the instruction portion 5 side. By having a connecting portion 34 that connects the portion P2 to the first and second arm portions 31 and 32 with a space portion S therebetween, even if the arm portion 3 is bent, the connecting portion 34 twists it. Since the rigidity in the (double arrow A) and the falling direction (double arrow B) is improved, the earthquake resistance can be improved without increasing the weight or minimizing the weight increase.

  Further, in the present embodiment, the space portion S includes a first side S1 facing the first arm portion 31, a second side S2 facing the second arm portion 32, and a first side facing the connecting portion 34. And the second side S2 is formed longer than the first side S1, thereby making the formation start point of the space S closer to the free end side of the pointer 6. Thus, the weight on the free end side of the pointer 6 can be suppressed, and the moment of inertia can be reduced.

  In the embodiment, the first arm portion 31 has a rotating shaft mounting portion 35 that is mounted on the rotating shaft 26, and the lateral width on the bent portion 33 side is made smaller than the lateral width of the rotating shaft mounting portion 35. Thus, the weight on the free end side of the pointer 6 can be suppressed, and the moment of inertia can be reduced.

  Further, in the present embodiment, the rotating shaft mounting portion 35 is formed as a thick portion having a thickness larger than that of the first arm portion 31 region from the rotating shaft mounting portion 35 toward the bent portion 33, and the rotating shaft 26 is formed on the thick portion. The center of gravity of the pointer 6 is brought closer to the main body of the drive main body 2 by attaching the rotary shaft 26 so as to pass through the thick portion through the through hole 36. As a result, the earthquake resistance can be further improved.

  FIGS. 6-8 shows the modification of the bending part 33 as 2nd-4th embodiment of this invention.

  In the second embodiment of FIG. 6, the bent portion 33 has a curvature, and in this case, the connecting portion 34 is the first arm portion 31 and a first predetermined distance L <b> 1 from the center of the bent portion 33. The first location P1 on the rotation shaft 26 side and the second location P2 on the second arm portion 32 that is the second predetermined distance L2 from the center of the bent portion 33 and on the indication portion 5 side. It is formed to connect.

  In the third embodiment of FIG. 7, the bent portion 33 is bent at an angle smaller than 90 degrees.

  In the fourth embodiment shown in FIG. 8, a plurality of bent portions 33 (two locations) are formed.

  In each of the above-described embodiments, the connecting portion 34 is linear, but the shape is arbitrary as long as the arm portion 3 can be reinforced, and a plurality of the connecting portions 34 may be provided as necessary.

The front view of the pointer type instrument of the 1st Embodiment of this invention. Sectional drawing of the AA line in FIG. Sectional drawing of the pointer | guide of the same embodiment. The front view of the arm part seen from the arrow Z direction in FIG. The principal part disassembled perspective view of the pointer | guide of the same embodiment. Sectional drawing which shows the 2nd Embodiment of this invention. Sectional drawing which shows the 3rd Embodiment of this invention. Sectional drawing which shows the 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display means 2 Drive main body 3 Arm part 4 Weight 5 Instruction part 6 Pointer 7 1st light source 8 Circuit board 9 2nd light source 10 Flexible board 12 Housing 13 Look-back member 14 Frame 15 Display 16 Storage case 16a Opening 17 Front cover 18 Liquid crystal display element 19 Light source for liquid crystal 20 Optical member 21 Case 22 Cover 23 Window 24 Column 25 Opening 26 Rotating shaft 27 Wall portion 29 Scale 31 First arm portion 32 Second arm portion 33 Bending portion 34 Connecting portion 35 Rotating shaft mounting part 36 Through hole 37 Insertion part 38 First notch part (first positioning part)
39 ridge portion 51 first portion 52 second portion 53 second notch portion 54 groove portion 55 insertion hole 56 air escape portion 57 concave portion L1 first predetermined distance L2 second predetermined distance M indicator portion P1 first Location P2 second location S space S1 first side S2 second side S3 third side

Claims (4)

Display means;
A drive body disposed on the back side of the display means;
An arm portion mounted on the rotation shaft of the drive body and detoured from the back surface to the side surface of the display means, and a pointer provided with an indicator portion that is connected or continuously formed with the arm portion and indicates the indicator portion, and The arm portion has a first arm portion located on the back surface of the display means and a second arm portion located on the side surface of the display means, and the first and second arm portions are interposed via the bent portions. In a continuous pointer-type instrument,
The arm portion is the first arm portion, and is a first predetermined distance from the bent portion by a first predetermined distance and the second arm portion, which is the second arm portion and second from the bent portion. A pointer-type meter characterized by having a connecting portion that connects the second portion on the indication portion side with the first and second arm portions by a predetermined distance, with a space portion therebetween. The space portion has a triangular shape having a first side facing the first arm portion, a second side facing the second arm portion, and a third side facing the connecting portion. The pointer-type meter according to claim 1, wherein the second side is formed longer than the first side. The said 1st arm part has a rotating shaft mounting part with which the said rotating shaft is mounted | worn, The lateral width by the side of the said bending part is formed smaller than the lateral width of this rotating shaft mounting part. The pointer-type meter according to 1. The rotating shaft mounting portion is formed as a thicker portion having a thickness larger than the first arm portion region from the rotating shaft mounting portion toward the bent portion, and penetrates in the axial direction of the rotating shaft. The pointer-type instrument according to claim 3, wherein the pointer-type instrument has a through hole and is mounted so that the rotating shaft passes through the thick portion through the through hole.

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