JP2011027701A5 - - Google Patents

Description

Instrument device

  The present invention relates to an instrument device for instructing an operation state in a vehicle, a construction machine, a ship, or the like.

  In this type of instrument device, various instrument bodies such as speedometers and fuel gauges are housed and fixed inside an upper and lower instrument case, and a display panel is attached and fixed to the front of the instrument body. In addition, an upper case including a cover plate made of a transparent resin material is placed on the front opening side of the case to prevent intrusion of dust, rainwater, and the like from the outside. The display unit such as scales, numbers, characters, and symbols provided on the display panel can be viewed.

  In order to simplify the assembly of such an instrument device, for example, the applicant of the present application adopts a configuration as shown in Patent Document 1 and the like. In this case, a rigid circuit board to which various circuit components for driving the instrument body are electrically connected is assembled and fixed behind the middle case (case body) made of a synthetic resin frame. The instrument body constituting a part of each indicating instrument (various instruments such as speedometer and fuel meter) is assembled and fixed. In addition, a pointer is attached to the tip of the pointer shaft of the instrument body, and an index part such as scales or letters is provided on the front side of the middle case (case body) located behind the pointer along the turning locus of the pointer. The display panel (dial plate) is placed and fixedly held.

  By assembling and holding the circuit board, instrument body, display panel, etc. with the middle case (case body) as a reference, the instrument body and circuit can be easily set by setting the middle case in the upper and lower cases. There is an advantage that a substrate, a display panel, and the like can be mounted in the case.

JP 2002-107183 A

  Patent Document 1 described above has an effect that the work efficiency can be increased by simplifying the assembly work. By the way, in this type of instrument device for vehicles (motorcycles), construction machines or ships, especially because it is used in a vibrating atmosphere, the peripheral portion of the display panel resonates. There is a problem that abnormal noise occurs. For this reason, the peripheral portion (outer peripheral portion) of the display panel is sandwiched between the upper case and the lower case so as not to be affected by external vibration, and is fixedly held. However, by holding the peripheral part of the display panel sandwiched between the cases, the generation of abnormal noise due to vibration can be suppressed, but the lower part of the display panel is particularly affected by the peripheral part of the display panel that projects outward from the outer shape of the middle case. When setting the instrument body, circuit board and display panel together with the middle case, it is necessary to artificially or mechanically hold the peripheral part of the display panel and send it into the lower case. The display panel may be bent depending on the weight of the substrate and the instrument body, and in some cases, the peripheral edge of the display panel may be damaged when the substrate of the display panel is fed while being suppressed from the periphery.

  The present invention pays attention to the above-mentioned problems, and an object thereof is to provide an instrument device that can be easily assembled and fixed to a case without applying a large load to the display panel.

  In order to achieve the above object, according to the present invention, in claim 1, a circuit board made of a hard material, an instrument main body assembled and fixed to the circuit board and having a pointer shaft extending forward, and a distal end side of the pointer shaft are mounted. A display panel disposed between the pointer and the circuit board and having a display unit corresponding to at least the pointer, disposed between the display panel and the circuit board, and including the instrument body. An intermediate case for assembling and fixing the display panel and the circuit board, and a case composed of an upper side and a lower side for housing the intermediate case, and a peripheral portion of the display panel being sandwiched between the upper and lower cases In the measuring instrument device, the peripheral portion of the display panel is formed to be larger than the outer shape of the middle case, and an outer dimension of the middle case is formed on a part of the peripheral portion. It is an instrument device, characterized in that recessed portions which are cutout formed to fit almost is provided.

  With such a configuration, an operator or a robot arm for automatic assembly or the like holds the middle case while holding the display panel as a main body by the recessed portion provided on the peripheral edge of the display panel. Therefore, the display panel can be stored in the case while preventing damage to the display panel.

  Further, in the instrument device according to claim 1, in claim 2, the recessed portion substantially extends along an opposing outer wall surface of the middle case and faces inward to the peripheral portion of the opposite side of the display panel. It is characterized by being notched so as to form a pair.

  By configuring in this way, the outer peripheral part of the middle case can be held in a well-balanced manner, so that the middle case in which the display panel, the instrument body and the circuit board are assembled to the case can be satisfactorily performed. Can do.

  Further, in the instrument device according to claim 1 or 2, in claim 3, the concave portion is substantially along the outer wall surface facing the middle case in a front view, and on the side facing the display panel. It is provided so as to form a pair inward at the peripheral portion, and a plurality of recessed portions forming the pair are formed on the left and right or top and bottom.

  By configuring in this way, it is possible to hold the outer peripheral part of the middle case in a stable state while maintaining a good balance between left and right or up and down, so that the display panel, instrument body and circuit board can be held against the case. Assembling work of the middle case that has been assembled can be performed satisfactorily.

  Further, in the instrument device according to any one of claims 1 to 3, in claim 4, a buffer member is interposed between the peripheral portion of the display panel and the case.

  With this configuration, the assembling workability of the middle case can be improved, and the peripheral edge of the display panel can be fixedly held between the upper case and the lower case via a buffer member. Therefore, the display panel is held without resonating with respect to external vibration, and as a result, it is possible to prevent the generation of abnormal noise such as stagnation due to resonance.

In the present invention, a circuit board made of a hard material, an instrument body assembled and fixed to the circuit board and having a pointer shaft extending forward, a pointer attached to the tip end side of the pointer shaft, and the pointer and the circuit board A display panel having a display unit disposed at least corresponding to the pointer, and an intermediate case disposed between the display panel and the circuit board, including the instrument body, and assembling and fixing the display panel and the circuit board. And an instrument device configured to hold a middle portion of the display panel with a case formed of an upper side and a lower side storing the middle case, and sandwiching a peripheral edge portion of the display panel between the upper and lower cases. The peripheral portion of the display panel is formed larger than the outer shape of the middle case, and a part of the peripheral portion is notched so as to substantially match the outer dimension of the middle case. Because the instrument device is characterized by having a recessed portion, the recessed portion provided at the peripheral portion of the display panel holds the display panel while holding the display panel as a main body without holding the display panel as a main component. Therefore, the display panel can be stored in the case while preventing damage to the display panel, and the intended purpose can be achieved.

FIG. 1 is a front view showing an instrument device according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the instrument device showing the line AA in FIG. 1. FIG. 3 is a cross-sectional view of the instrument device showing a state before assembly in FIG. 2. FIG. 4 is a front view showing a state where the upper and lower cases of FIG. 1 are removed. FIG. 5 is an enlarged cross-sectional view of the instrument device showing the main part of FIG. 2. FIG. 6 is an enlarged cross-sectional view of a main part of the instrument device showing a portion along line BB in FIG. 1. FIG. 7 is a front view showing an instrument device according to a second embodiment of the present invention. FIG. 8 is a front view showing a state where the upper and lower cases of FIG. 7 are removed. FIG. 9 is a cross-sectional view of the instrument device showing a CC line portion in FIG. 7. FIG. 10 is an enlarged cross-sectional view of the main part of the instrument device showing the DD line part of FIG. 7.

  FIGS. 1 to 6 show a first embodiment of the present invention. Based on these drawings, a case where the embodiment of the present invention is applied to an instrument device mounted on, for example, a motorcycle will be described below.

  In the figure, in the meter device according to the present embodiment, an indicator instrument D consisting of a speedometer at the center, a respective indicator instrument D consisting of a fuel gauge on the left side, and a water temperature gauge on the right side are arranged. It is assembled and fixed in a case 1 (comprising an upper case 11 and a lower case 12) which is an exterior member.

  In this case, in each indicating instrument D that displays various information such as a speedometer, a fuel gauge, and a water temperature gauge, a hard circuit board 3 is assembled and fixed behind a synthetic resin frame-like middle case 2. In addition, the instrument body 4 constituting a part of each indicating instrument D is assembled and fixed to the back side of the circuit board 3, and on the tip side of the pointer shaft 5 provided on each instrument body 4, Each of the pointers 6 rotating around the pointer shaft 5 is press-fitted and fixed. As the pointer structure in this embodiment, a light emitting pointer 6 formed of a transparent synthetic resin such as an acrylic resin is used.

  On the front side of the middle case 2 located behind the pointer 6, a display panel 7 provided with a display portion 7a made of scales, numbers, symbols, and the like is disposed. On the circuit board 3, a light source (light emitting diode 8) for transmitting and illuminating the display portion 7a such as the scales and numerals of the display panel 7 facing the inside case 2 of the frame shape and the pointer 6 are illuminated. A light source for pointer (light emitting diode 8a) for mounting is mounted.

  The display panel 7 is mounted and fixed on the middle case 2 by superimposing the display panel 7 on the middle case 2 and rotating and fixing with screws 9 as fixing members. Further, the peripheral portion 72 which is the outer peripheral portion of the substrate 71 of the display panel 7 is sandwiched between the upper case 11 and the lower case 12 so as not to be affected by external vibration, and is fixedly held. Yes.

  The case 1 in the present embodiment includes an upper case 11 and a lower case 12, and the upper case 11 includes a display portion 7 a region such as scales, numbers, characters, and symbols provided on the display panel 7. It is formed by a cover plate 11a made of a permeable synthetic resin material capable of visually recognizing the indication state of the pointer 6.

Further, the middle case 2 in the present embodiment includes a side wall portion 21 having a substantially frame shape in order to support an indicator instrument D such as a speedometer, a liquid level meter, and a water temperature gauge with a white synthetic resin material, and the side wall portion. The cylindrical portion 23 is formed by a horizontal wall portion 22 provided so as to connect the middle portions of the 21 and integrally surrounds the pointer shaft 5 of each indicator instrument D from the middle case 2 formed in the frame shape. A light source 8a for pointer illumination is disposed on the surface side of the circuit board 3 formed and positioned at the bottom of the cylindrical portion 23.

  Further, the middle case 2 is formed with a reflection wall portion 24 integrally protruding continuously from the middle of the outer peripheral surface of the cylindrical portion 23, and a display portion made of scales or numerals is provided at a position directly below the reflection wall portion 24. A light source 8 for illumination for transmitting and illuminating 7a is disposed. Further, in the middle case 2, a reflection surface portion that reflects and guides the light from the light source 8 through the reflection wall portion 24, and further reflects and guides the reflected and guided light toward the display portion 7 a side of the display panel 7. 25 is integrally formed continuously from the horizontal wall portion 22 of the middle case 2.

  The circuit board 3 is made of a hard circuit board in which a wiring pattern (not shown) is provided on a glass epoxy base material, for example, and driving means (not shown) for driving and controlling the instrument body 4, for example, a resistor and a capacitor Various circuit components (not shown) such as are electrically connected to the wiring pattern.

  The instrument body 4 is composed of a movable magnet instrument or a stepping motor. In this example, the instrument shaft 4 is attached to the back of the circuit board 3 so that the pointer shaft 5 penetrates the shaft hole formed in the circuit board 3, and soldering, etc. It is electrically connected to the wiring pattern (the driving means) as appropriate by conducting means.

  The pointer 6 is made of a light-transmitting synthetic resin, and indicates a display unit 7a that indicates a scale, numbers, characters, and the like provided on the display panel 7, and a rotation center side that is a base side of the instruction unit 61. The pointer cap 62 is made of a light-shielding synthetic resin and is fixed to the distal end of the pointer shaft 5 through a base side of the indicating portion 61 by means such as press fitting.

  The display panel 7 is formed by a substrate 71 made of a light-transmitting synthetic resin material. On the surface of the substrate 71, a light-transmitting display portion 7a such as a scale or characters / numbers to be indicated by the pointer 6 is provided. It arrange | positions at circular arc shape along the rotation track | orbit of the pointer | guide 6, and the ground color part 7b used as the background of the display part 7a with this display part 7a is formed by means, such as printing.

  The display panel 7 is provided with a through hole 73 at a position corresponding to the pointer shaft 5, and the pointer shaft 5 and the pointer 6 can be connected through the through hole 73.

  Further, as described above, the peripheral edge 72 which is the outer peripheral portion of the display panel 7 is formed on the display panel 7 so as to be larger than the outer peripheral wall portion of the side wall portion 21 constituting the outer shape of the middle case 2. A concave portion 74 is formed in a part of the peripheral edge portion 72 of the inner case 2 by being cut out in an arc shape so as to substantially match the outer dimension of the middle case 2 (side wall portion 21 forming the outer peripheral wall portion). In the present embodiment, when viewed from the front, the recessed portion 74 is formed so as to form a pair along the side wall portion 21 that is the outer wall surface (outer peripheral wall portion) facing the middle case 2 and toward the inside of the display panel 7. Notches are formed on the left and right sides so that there is a pair on the right side and a pair on the left side.

  In this case, the recess formed in the notched portion 74 is formed so as to match the outer peripheral wall portion of the side wall portion 21 constituting the outer shape of the middle case 2 as illustrated in FIG. However, the cutout may be formed so as to be slightly outside the side wall 21 that is the outer peripheral wall, or conversely, the cutout may be formed so as to be slightly inside the side wall 21 that is the outer peripheral wall. As a result, a recessed portion 74 is provided in a part of the peripheral portion 72 of the display panel 7 so as to substantially match the outer dimension of the middle case 2 so that an operator or a robot arm for automatic assembly can display The recessed portion 74 provided on the peripheral edge portion 72 of the panel 7 may be formed to such an extent that it can be held while suppressing the middle case 2 without holding the display panel 7 as a main component.

  Further, a buffer member B made of rubber or the like is affixed to the front surface side of the display panel 7 at an appropriate location of 72 peripheral portions via, for example, a double-sided tape (not shown). In the present embodiment, the buffer member B is attached only on one side of the display panel 7, but it may be fixed on both sides.

The light sources 8 and 8a are formed of, for example, a chip-type light emitting diode, and a pointer illumination light source 8a for emitting illumination of the pointer 6 and a display unit illumination light source 8 for transmitting and illuminating the display unit 7a of the display panel 7 are used. Are mounted on the surface of the circuit board 3.

  In the instrument device according to the first embodiment configured as described above, assembly is performed as follows. First, the instrument main body 4 constituting a part of each indicator instrument D is assembled and fixed to the back side of the circuit board 3 and electrically routed to form the circuit board 3 behind the middle case 2 in this state. Install and fix to. Next, the display panel 7 is arranged on the front side of the middle case 2, and the display panel 7 is turned and fixed to the middle case 2 with screws 9. Subsequently, the base side of the pointer 6 is press-fitted and fixed to the distal end side of the pointer shaft 5 provided in each instrument body 4. As a result, the circuit board 3, the display panel 7, and the pointer 6 assembled with the meter body 4 with the middle case 2 as a reference are assembled and held, and the assembled component is mounted in the case 1 including the upper and lower cases 11 and 12. As a result, the assembly work can be made more efficient.

  In this way, when the assembled parts that are assembled and united with the middle case 2 as a reference are housed and fixed in the case 1, a part of the peripheral portion 72 of the display panel 7 that is assembled and fixed to the front side of the middle case 2 is used. Is provided with a recessed portion 74 that is cut out so as to substantially match the outer dimension of the middle case 2 (the side wall portion 21 that forms the outer peripheral wall portion), so that an operator or a robot arm for automatic assembly can be used. The recessed portion 74 provided on the peripheral edge 72 of the display panel 7 can hold the side wall portion 21 which is the outer wall surface of the middle case 2 without holding the display panel 7 as a main component, thereby The display panel 7 can be stored in the lower case 12 while preventing the display panel 7 from being damaged.

  At this time, in this embodiment, the recessed portions 74 provided at the 72 peripheral edge portions of the display panel 7 are the side wall portions 21 which are outer wall surfaces (outer peripheral wall portions) facing the middle case 2 in a front view. And a pair of notches on the right side and a pair on the left side so as to form a pair inwardly at the peripheral portion 72 of the opposite side of the display panel 7. Since a plurality of the recessed portions 74 forming the pair are formed on the left and right, the side wall portion 21 which is the outer wall surface of the middle case 2 can be held while being paired. The side wall portion 21 which is the outer peripheral portion can be held while being balanced in a stable state while maintaining the left and right balance, whereby the display panel 7, the instrument body 4 and the circuit board 3 can be held against the lower case 12. Assembling work of the middle case 2 assembled with the above can be performed satisfactorily.

  In addition, the display panel 7 side including the middle case 2 housed in the lower case 12 is covered with a cover plate 11a made of a transparent synthetic resin material, which is the upper case 11, by a fixing screw (not shown). By fixing the lower case 12 side and the cover plate 11 a side together, the outer case 11 is formed larger than the outer case 12 between the cover plate 11 a as the upper case 11 and the lower case 12. The 72 peripheral edge portions of the display panel 7 are sandwiched and held via the buffer member B, and the assembly of the instrument device is completed.

  At this time, the assembling workability of the middle case 2 can be improved, and the display panel 7 sandwiched between the upper case 11 (cover plate 11a) and the lower case 12 is provided with the upper case 11. Since the peripheral edge 72 of the display panel 7 can be fixed and held via the buffer member B interposed between the display panel 7 and the display panel 7, the display panel 7 is held without resonating with external vibrations. As a result, it is possible to prevent the generation of abnormal noise such as a squeak due to resonance.

  During illumination at night or the like, when the pointer illumination light source 8a for illuminating the pointer 6 emits light, the illumination light is guided inside the cylindrical portion 23 of the middle case 2 and the display panel 7 is illuminated. The guide portion 61 of the pointer 6 is illuminated by being guided and guided to the base side of the pointer 6 through the through-hole 73 and then guided to the instruction portion 61 from the base side.

  Further, when the light source 8 for illuminating the display unit emits light simultaneously with the illumination of the pointer 6, the illumination light is reflected by the reflecting wall portion 24 provided immediately above the light source 8, and the reflected light is reflected on the reflecting surface portion 25. The display portion 7a of the display panel 7 is brightly transmitted and illuminated.

  FIGS. 7 to 10 show a second embodiment of the present invention, and the peripheral portion 72 which is the outer peripheral portion of the display panel 7 is a middle case in substantially the same manner as the first embodiment described above. 2 is formed to be larger than the outer peripheral wall portion of the side wall portion 21 constituting the outer shape of 2, and the outer dimensions of the middle case 2 (the side wall portion forming the outer peripheral wall portion) are formed at a part of the peripheral portion 72 of the display panel 7. 21) is provided with a recessed portion 74a that is cut out in a substantially trapezoidal shape so as to substantially match with 21).

  In the present embodiment, a pair is formed on the right side so as to form a pair toward the inside of the display panel 7 when viewed from the front, substantially along the side wall 21 that is the outer wall surface (outer peripheral wall) facing the middle case 2. A total of six recessed portions 74a are cut out at 72 peripheral edge portions of the display panel 7 so that a pair is formed on the left side and a pair in the center.

  Further, in this embodiment, as shown in FIG. 8 and the like, the recess formed in the notch 74a is formed so as to match the outer peripheral wall portion of the side wall portion 21 constituting the outer shape of the middle case 2. However, it is possible to form a notch so as to be slightly outside the side wall portion 21 which is the outer peripheral wall, or conversely to form a notch so as to be slightly inside the side wall portion 21 which is the outer peripheral wall. As a result, a concave portion 74a is provided in a part of the peripheral portion 72 of the display panel 7 so as to substantially match the outer dimension of the middle case 2, so that an operator or a robot arm for automatic assembly can be displayed on the display panel. The recessed portion 74a provided on the peripheral edge 72 of the 7 should be formed to such an extent that it can be held while suppressing the middle case 2 without holding the display panel 7 as a main component.

  Further, a buffer member B1 such as rubber having a U-shaped cross section is fitted and fixedly held at appropriate positions at 72 peripheral portions of the display panel 7.

  Further, as the case 1 in the present embodiment, the facing plate 11b that covers the outside of the display area of the display panel 7 that is the periphery of the display area where the display portion 7a of the display panel 7 is provided, and the front side of the facing plate 11b The display portion 7a on the display panel 7 and the transparent cover plate 11a provided so as to be able to read the indication state of the pointer 6 and the like are formed, and the lower end surface portion of the facing plate 11b is the display panel. 7 is provided so as to be held in contact with 72 peripheral edge portions.

  In the instrument device according to the second embodiment configured as described above, the assembly parts assembled as a unit with the middle case 2 as a reference are stored in the case 1 in substantially the same manner as the first embodiment described above. When fixed, a part of the peripheral portion 72 of the display panel 7 assembled and fixed to the front side of the middle case 2 is substantially matched to the outer dimension of the middle case 2 (side wall portion 21 forming the outer peripheral wall portion). Since the notched recess 74a is provided, an operator or a robot arm for automatic assembly or the like can be used by an outer periphery of the display panel 7 by the recess 74a provided on the peripheral edge 72 of the display panel 7. Can be held while suppressing the side wall portion 21 which is the outer wall surface of the middle case 2, thereby preventing the display panel 7 from being damaged. While it is possible to house the lower side of the case 12 of the case 1.

At this time, in the present embodiment, the recessed portions 74a provided at the 72 peripheral edge portions of the display panel 7 are the side wall portions 21 which are outer wall surfaces (outer peripheral wall portions) facing the middle case 2 in a front view. The middle case 2 has a pair of notches formed on the right and left sides and the center so that a pair is formed on the right side, a pair on the left side, and a pair on the center and a pair on the center. Since the side wall portion 21 that is the outer wall surface of the inner case 2 can be held while being paired, the side wall portion 21 that is the outer peripheral portion of the middle case 2 can be held while being well balanced, and the lower case 12, the assembly work of the middle case 2 in which the display panel 7, the instrument body 4, the circuit board 3, etc. are assembled can be performed satisfactorily.

  Further, the display panel 7 side including the middle case 2 housed in the lower case 12 is covered by a cover plate 11a and a turntable plate 11b made of a permeable synthetic resin material, which is the upper case 11, and fixed. The lower case 12 side and the cover plate 11a side are fastened and fixed together with screws for use, so that the middle case 2 is interposed between the turntable plate 11b constituting the part of the upper case 11 and the lower case 12. The front and back surfaces of 72 peripheral edge portions of the display panel 7 formed larger than the outer shape are sandwiched and held via the buffer member B1 to complete the assembly of the instrument device. As a result, the peripheral edge 72 of the display panel 7 can be fixedly held via the buffer member B1, so that the display panel 7 is held without resonating with respect to external vibration. As a result, It is possible to prevent the generation of abnormal noise such as stagnation due to resonance.

  In each of the above-described embodiments, the cut-out shape of the recessed portions 74 and 74a provided at the 72 peripheral edge portions of the display panel 7 is an arc shape or a substantially trapezoidal shape. The size and shape of the cuts of the recessed portions 74 and 74a may be set according to the size and shape of the instrument device, and the display panel 7 is sandwiched between the case 1 composed of the upper side and the lower side. In some cases, the cushioning members B, B1 and the like may be held without being provided between the upper and lower cases, and the cushioning members may be held at 72 positions on the peripheral portion of the display panel 7. As a means for setting, a notch is provided in the peripheral edge 72 of the display panel 7, and a buffer function is provided to prevent the display panel 7 from shaking by fitting a substantially bowl-shaped buffer member into the notch. Is intended may be so that, it can be changed as appropriate.

  Moreover, in each embodiment, since it was the horizontally long display panel 7, the recessed part 74 provided in 72 peripheral edge parts of the display panel 7 is the outer wall surface (outer peripheral wall) which the middle case 2 opposes in front view. A pair on the right side and a pair on the left side so as to form a pair inwardly at the peripheral edge portion 72 of the opposite side of the display panel 7. Although it is notched, in the case of a vertically long display panel, a pair is formed on the upper side and a pair is formed on the lower side so as to form a pair inward at the peripheral portion 72 of the opposite side of the display panel 7. In addition, the upper and lower portions may be cut out, and the position of the recessed portion 74 may be arbitrarily set depending on the shape of the display panel.

  Further, in the above-described embodiment, as an application example, a pointer-type instrument device such as a motorcycle has been described as an example. However, the instrument device is not limited to a vehicle indicator instrument, a marine instrument device, an agricultural machine, a construction machine, or the like. It is effective in an instrument device that is applied in an intense vibration atmosphere such as an instrument device of a special vehicle.

1 case
2 Middle case
3 Circuit board
4 Instrument body
5 Pointer shaft
6 Guidelines
7 Display panel
7a Display section
7b Ground color part
8,8a Light source (light emitting diode)
9 Screw 11 Upper case 11a Cover plate 12 Lower case 21 Side wall portion 22 Horizontal wall portion 23 Cylindrical portion 24 Reflecting wall portion 25 Reflecting surface portion 61 Pointer portion 62 Pointer cap 71 Substrate 72 Peripheral portion 73 Through hole 74, 74a Concave Part
B, B1 cushioning member
D indicating instrument