JP2010033713A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a vehicle with good appearance with a switch which changes display states. <P>SOLUTION: The device is composed of a circuit board 80 mounting a switch 83 which changes display states by pressing of a pressing member 83a, a case 23 on which the circuit board 80 is mounted, a front panel 30 which has an aperture 31 penetrated in a display direction and is mounted on the case 23 further toward a front side than the switch 83 in a display direction, a stopper 50 mounted at a periphery edge of the aperture 31, an operating member 70 with an operating face 77 which is inserted into the case 23 through the aperture 31 in free back-and-forth reciprocating displacement in the display direction, locked at a locking position by the stopper 50 from a front side of the display direction, and situated along a front face 33 of the front panel 30 at the locking position, and an abutment surface 71 which is kept separate from a pressing member 83a toward a front side of the display direction at the locked position, and abuts and presses the pressing member 83a by pressing force from a back side of the display to the operation face 77 and an elastomer 60 provided to bias the operating member 70 toward a front side of the display direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle display device including a switch for switching a display state.

2. Description of the Related Art Conventionally, there is known an apparatus in which a switch that switches a display state by pressing a pressing portion is mounted on a circuit board that is assembled to a case body, and the pressing portion is pressed by applying a pressing force to an operation member. (For example, Patent Documents 1 and 2)
In the vehicle display device disclosed in Patent Document 1, which is a type of such a device, a tapered knob is reciprocally displaced in the display direction through an opening of a locking cover that is attached to the case body and is shifted to the front side in the display direction with respect to the switch. The knob is freely inserted into the case body, and the knob is biased forward in the display direction by an elastic body. Thus, when the pressing force on the rear side in the display direction is not applied to the knob, the knob urged forward in the display direction by the elastic body is locked by the stopper of the case body at the locking position, and the front panel The state which protrudes from an opening part will be maintained.
Japanese Patent Laid-Open No. 11-53505 JP 2005-78989 A

  Now, as in Patent Document 1, the tapered knob protruding from the front panel of the vehicle display device to the front side in the display direction has a problem of deteriorating the appearance of the device. Therefore, the present inventors have conducted intensive research on using an operation member having an operation surface along the front surface in the display direction at the locking position, as disclosed in Patent Document 2, instead of the tapered knob. It was.

  However, as a result of research, when the operation member having the operation surface along the front surface in the display direction is assembled to the case body in the configuration of Patent Document 1, the operation at the engagement position of the operation member with respect to the front surface in the display direction of the front panel is performed. It was found that the position of the surface varies from product to product, and the improvement in appearance cannot be achieved. The reason will be described below.

  The variation of the operation surface of the operation member with respect to the front surface of the display direction of the front panel is that the processing tolerances and assembly tolerances of the operation member, the case body that locks the operation member, and the front panel assembled to the case body are accumulated. Is attributed. In the configuration of Patent Document 1, accumulation tolerances are accumulated by interposing a plurality of members between the operation member and the front panel, and the position of the operation surface of the operation member with respect to the front surface in the display direction of the front panel cannot be made constant. It is. Thereby, the improvement of the appearance of the vehicle display device cannot be achieved.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle display device that is excellent in appearance.

  To achieve the above object, according to the first aspect of the present invention, a switch that switches the display state by pressing the pressing portion, a circuit board on which the switch is mounted, a case body on which the circuit board is assembled, and a switch A front panel having an opening that penetrates in the display direction and is assembled to the case body by shifting to the front side in the display direction, a stopper provided at the periphery of the opening, and a reciprocating displacement in the display direction through the opening are inserted into the case body. An operation member that is locked from the front side in the display direction by a stopper at the locking position, and is separated from the operation surface along the front surface in the display direction of the front panel at the locking position and from the pressing portion to the front side in the display direction at the locking position. An operation member having an abutting surface that abuts the pressing portion and presses the pressing portion by applying a pressing force on the rear side in the display direction to the operating surface; Comprising an elastic member for biasing the operating member in the display direction front side, a.

  According to the present invention, the operation member inserted into the case body so as to be reciprocally displaceable in the display direction through the opening of the front panel is provided by the elastic body when the pressing force on the rear side in the display direction is not applied to the operation surface of the operation member. By being biased to the front side in the display direction, it is locked at the locking position by the stopper at the periphery of the opening. The factors that cause the position of the operation surface of the operation member relative to the front surface in the display direction of the front panel to vary depending on the product at the locking position of the operation member are the processing tolerance of the operation member and the stopper provided on the periphery of the opening of the front panel, and It is an accumulation tolerance that accumulates assembly tolerances. Therefore, since the accumulation of accumulation tolerances is suppressed, the operation surface of the operation member can be positioned with respect to the front surface in the display direction of the front panel, and a vehicular display device with excellent appearance can be provided. is there.

  Further, an accumulation tolerance is accumulated between the pressing portion of the switch and the contact surface of the operation member. Specifically, this integration tolerance includes a switch having a pressing portion, a circuit board on which the switch is mounted, a case body to which the circuit board is assembled, a front panel assembled to the case body, and an operation member locked to the front panel. It consists of processing tolerances and assembly tolerances. However, since the contact surface of the operation member is separated from the pressing portion in the locking position toward the front side in the display direction, the contact surface of the operation member is not applied to the operation surface of the operation member. Does not press the pressing part of the switch. Further, when the pressing force on the rear side in the display direction is applied to the operation surface of the operation member, the operation member is displaced rearward in the display direction with respect to the front panel, and the contact surface presses the pressing portion of the switch. . Therefore, even when accumulation tolerances due to multiple parts accumulate, the display state can be switched reliably by applying a pressing force to the operation surface of the operation member.

  In the invention according to claim 2, the stopper is formed by a stopper member assembled to the periphery of the opening. According to this invention, the stopper member that is assembled to the periphery of the opening of the front panel to form a stopper is small with respect to the front panel, and it is easy to reduce machining tolerances by improving machining accuracy. Therefore, since the accumulation tolerance accumulated between the front surface of the display direction of the front panel and the operation surface of the operation member is reduced, the operation surface of the operation member is positioned with high accuracy and constant with respect to the front surface of the display direction of the front panel. Therefore, it is possible to provide a vehicular display device that is excellent in appearance.

  In the invention according to claim 3, the elastic body biases the operation member from the rear side in the display direction to the front side in the display direction. According to this invention, the elastic body that urges the operation member from the rear side in the display direction to the front side in the display direction is shielded from the front side in the display direction by the operation member, and is hardly visually recognized. Therefore, the operation surface of the operation member positioned at a fixed position with respect to the front surface in the display direction of the front panel can be easily recognized, and a display device for a vehicle that is excellent in appearance can be provided.

  In the invention according to claim 4, the operation member has a convex portion protruding in a direction intersecting the display direction, and the front surface of the convex portion in the display direction is locked by the stopper at the locking position, and the display direction of the convex portion The rear surface is urged forward in the display direction by an elastic body. According to this invention, since the front surface in the display direction of the convex portion protruding in the direction intersecting the display direction from the operation member is arranged to be locked by the stopper, the convex portion of the operation member is located on the rear side in the display direction of the stopper. Located in. Further, since the elastic body is arranged to urge the rear surface in the display direction of the convex portion, the elastic body is positioned further on the rear side in the display direction than the convex portion on the rear side in the display direction of the stopper. Therefore, the convex portion and the elastic body of the operation member are shielded from the front side in the display direction by the stopper and are not easily seen. Therefore, the operation surface of the operation member positioned at a constant position relative to the front surface of the display direction of the front panel is clarified, and a display device for a vehicle having an excellent appearance can be provided.

  When the stopper, the convex portion of the operation member, and the elastic body are arranged side by side in the display direction, these configurations expand in the display direction. Then, the position of the operation surface at the locking position is separated from the front surface in the display direction of the front panel, and there is a risk that the appearance of the operation surface of the operation member positioned constant with respect to the front surface in the display direction of the front panel is deteriorated. . However, in the invention according to claim 5, the opening is formed in the bottom surface of the concave portion that is recessed rearward in the display direction on the front panel, and the elastic body and the convex portion are accommodated in the concave portion. Can be brought closer to the front in the display direction of the front panel. Therefore, it is possible to improve the appearance of the operation surface of the operation member that is positioned with respect to the front surface in the display direction of the front panel.

  In the invention according to claim 6, the area of the contact surface is larger than the projected area of the pressing portion in the display direction. According to the present invention, an accumulation tolerance is accumulated between the pressing portion of the switch and the contact surface of the operation member in the direction orthogonal to the display direction in addition to the display direction. Thereby, it becomes easy to produce dispersion | variation also about the direction of the contact surface with respect to a press part orthogonally to a display direction. However, if the area of the contact surface is made larger than the projected area of the pressing portion in the display direction, even if the position of the contact surface varies in the direction perpendicular to the display direction with respect to the pressing portion, the contact surface The surface can be brought into contact with the pressing portion to reliably press the pressing portion. Therefore, the display state can be switched more reliably by applying a pressing force to the operation surface of the operation member.

  In the invention according to claim 7, the case body is constituted by assembling a plurality of members with each other. According to this invention, there exists a possibility that the integration | stacking tolerance in a case body may increase because a case body is comprised by mutually assembling several members. However, in the locking position, the operation member is locked to the front panel, and is not affected by the accumulation tolerance in the case body, so the operation surface of the operation member is positioned constant with respect to the front surface of the front panel in the display direction. Therefore, it is possible to provide a vehicular display device that is excellent in appearance.

  Further, since the accumulation tolerance in the case body is included as a factor of the accumulation tolerance accumulated between the pressing portion of the switch and the contact surface of the operation member, the case body is configured by assembling a plurality of members. Therefore, the accumulation tolerance accumulated between the pressing portion and the contact surface increases. However, even when there is an accumulation tolerance due to multi-parts, the contact surface separated from the pressing portion is surely displayed by exerting the action of the present invention in which the pressing surface is in contact with and pressed by applying the pressing force to the operation surface. The state can be switched.

  In the invention according to claim 8, the operation surface is located on the same plane as the front surface in the display direction of the front panel at the locking position. According to this invention, the operation surface of the operation member and the front surface in the display direction of the front panel are located on the same plane at the locking position where the operation member is locked by the stopper. Therefore, even a slight variation in the operation surface of the operation member with respect to the front of the display direction of the front panel is easy to be visually recognized, and the appearance of the vehicle display device is likely to deteriorate. Therefore, the operation of positioning the operation surface of the operation member uniformly with respect to the front of the display direction of the front panel is more effectively exhibited.

  In the invention according to claim 9, the circuit board is mounted with a light emitting element that emits light, the operation member is made of a translucent material, has an incident surface on which light emitted from the light emitting element is incident, and the operation surface is The light introduced into the operation member from the incident surface emits light. According to this invention, the light emitted from the light emitting element is incident on the inside of the member from the incident surface of the operation member, and is emitted from the operation surface. Although the operation surface that emits light in this way can improve the appearance by being easily visible, the slight variation in the operation surface with respect to the front surface of the display direction of the front panel is also visually recognized, and the appearance may be impaired. There is. However, the appearance is not impaired by the action of positioning the operation surface constant with respect to the front of the front panel in the display direction.

  In the invention according to claim 10, the light emitting element is mounted on the circuit board adjacent to the switch, and the incident surface and the contact surface are the same surface of the operation member. According to this invention, the light emitting element mounted on the circuit board and the incident surface of the operation member are integrated in the same manner as between the pressing portion of the switch mounted on the circuit board and the contact surface of the operation member. Tolerances accumulate. Thereby, the position of the incident surface of the operation member with respect to the light emitting element is likely to vary in the display direction and the direction orthogonal to the display direction. Then, there is a concern that the state of light incident on the operation member from the incident surface varies from product to product, and the operation surface cannot be made to emit light constantly. However, since the light emitting element is adjacent to the switch and the incident surface is the same as the contact surface, the light emitting element is positioned relative to the rear side of the incident surface in the display direction. Therefore, regardless of variations in the display direction of the incident surface position with respect to the light emitting element, the light emitted from the light emitting element can be incident on the inside of the operation member from the incident surface. In addition, it is possible to form the incident surface and the contact surface in a wider area on the same surface of the operation member. Therefore, even when the direction orthogonal to the display direction varies, the light emitting element can be positioned relative to the rear side of the display direction of the incident surface, and the incident surface allows the light emitted from the light emitting element to enter the operation member. is there. According to these, even when the accumulation tolerance due to multiple components accumulates, variation in the state of light incident on the operation member from the incident surface can be suppressed, and the operation surface can emit light uniformly.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In addition, the overlapping description is abbreviate | omitted by attaching | subjecting the same code | symbol to the corresponding component in each embodiment.

(First embodiment)
1-3 show a combination meter 100 according to one embodiment of the present invention. The combination meter 100 is accommodated in an instrument panel provided in a vehicle interior of the vehicle, and the front side shown in FIG. 1 is arranged toward the driver's seat side.

(Basic configuration)
FIG. 1 shows a display design 10 of the combination meter 100. The display design 10 of the combination meter 100 includes a speedometer 13, a water temperature meter 15, a fuel gauge 17, a background display unit 18, a multi display unit 19, a trip switching unit 21, and other warning displays (not shown).

  The speedometer 13 displays vehicle speed information acquired by the combination meter 100 by a pointer 13a, a dial 13b, a scale 13c, and the like. Similarly, the water temperature meter 15 displays an abnormality in the cooling water temperature of the internal combustion engine acquired by the combination meter 100 by a pointer 15a, a dial plate 15b, a scale 15c, and the like. Similarly, the fuel gauge 17 displays the fuel remaining amount information in the fuel tank acquired by the combination meter 100 by the pointer 17a, the dial plate 17b, the scale 17c, and the like.

  The background display unit 18 is a display of an area where the speedometer 13, the water temperature meter 15, the fuel gauge 17, and other warning displays (not shown) are not formed. The background display unit 18 is displayed by a dial panel 18a painted in dark color.

  The multi display unit 19 is displayed by a segment type liquid crystal panel 20 disposed on the back side of the dial 13b, and is visible from the front side through an opening 13d provided in the dial 13b. The multi display unit 19 applies a voltage to a plurality of segments formed in advance, thereby changing the light transmittance of the segment to form a desired display design. The multi display unit 19 includes a shift indicator 19a, a clock display 19b, a trip meter 19c, and the like. The shift indicator 19a displays shift position information of the automatic transmission acquired by the combination meter 100. The clock display 19b displays the current time based on information of a clock circuit built in the display control circuit 11 (see FIG. 3) described later. The trip meter 19c accumulates and stores the travel distance based on the vehicle speed information acquired by the combination meter 100, and displays the stored accumulated travel distance information.

  The trip switching unit 21 is provided on the front side of the combination meter 100. The trip switching unit 21 is a switching operation unit that switches the display state of the trip meter 19c, and a character design 21a indicating the function of the switching unit 21 is formed.

  FIG. 2 shows the mechanical configuration of the combination meter 100. The combination meter 100 includes a case body 23, a front panel 30, a circuit board 80, an operation member 70, and the like.

  The case body 23 is configured by assembling a plurality of members such as the case member 25, the cover member 24, and the facing member 26. The case member 25 is formed of a resin material such as polypropylene, and supports and fixes the dial panel 18a and the dial plates 13b, 15b, and 17b (see FIG. 1) on the front side, and holds the circuit board 80 on the back side. ing. The cover member 24 is a bottomed container formed of a resin material such as polypropylene, and accommodates the circuit board 80 by being attached to the case member 25 by a fixing claw or the like. The facing member 26 is formed of a resin material such as polypropylene, and is assembled to the front side of the case member 25 in the display direction. The inner peripheral surface of the facing member 26 is formed with a black paint for suppressing light reflection and a texture for irregularly reflecting light.

  The circuit board 80 is made of a paper phenolic or glass epoxy hard substrate. The circuit board 80 has a wiring pattern (not shown) made of a predetermined copper foil material formed on the front side. A switch 83, a light emitting diode 81, and the like are mounted on the circuit board 80. The switch 83 is provided on a wiring pattern formed on the circuit board 80 and has a pressing portion 83a. The switch 83 forms conduction of the wiring pattern when the pressing portion 83a is pressed rearward in the display direction. A light emitting diode 81 is mounted adjacent to the switch 83. The light emitting diode 81 is a chip type, and the height from the circuit board 80 is lower than that of the switch 83.

  The front panel 30 is formed of a translucent material such as a colorless and transparent acrylic resin. The front panel 30 is attached to the turn-around member 26 of the case body 23 from the front side in the display direction by shifting to the front side in the display direction from the switch 83 mounted on the circuit board 80. The front panel 30 is provided with an opening 31 that penetrates in the display direction.

  The operation member 70 is inserted into the case body 23 through the opening 31 of the front panel 30 and can be reciprocally displaced in the display direction. The operation member 70 has a contact surface 71 at an opening 18b provided in the dial panel 18a and a portion extending from the opening 25a provided in the case member 25 to the vicinity of the switch 83.

  FIG. 3 shows the electrical configuration of the combination meter 100. The combination meter 100 includes a liquid crystal panel 20, movements 13e, 15e, and 17e, and other electronic devices (not shown), in addition to the switch 83 and the light emitting diode 81, with the display control circuit 11 as a center.

  The display control circuit 11 includes a microcomputer, and the liquid crystal panel 20, the backlight 20a, the switch 83, the light emitting diode 81, the movements 13e, 15e, 17e, and the like are electrically connected. In addition, the display control circuit 11 is electrically connected to a vehicle control device 91 mounted on the vehicle. The display control circuit 11 controls the movements 13e, 15e, 17e, and the liquid crystal panel 20 based on information such as the vehicle speed, the coolant temperature, the remaining fuel amount, and the shift position received from the vehicle control device 91. I do. Thereby, the combination meter 100 forms the display design 10.

  As shown in FIGS. 1 and 3, the liquid crystal panel 20 is a rectangular plate-like display device that displays a multi-display unit 19 that constitutes the display design 10. The liquid crystal panel 20 is installed on the back side of the opening window 13d provided on the dial 13b. The liquid crystal panel 20 is formed in a rectangular plate shape by sealing an oily transparent liquid crystal composition between a pair of resin substrates having light permeability and sealing the periphery of the resin substrate. A transparent electrode made of indium tin oxide or the like for applying a voltage to the liquid crystal is formed on the inner surfaces of the pair of resin substrates. In addition, polarizing filters are provided on both outer surfaces of the resin substrate. The liquid crystal panel 20 forms a display by applying a voltage from the display control circuit 11 to the liquid crystal composition of each segment through a transparent electrode. The liquid crystal panel 20 is a segment-type display device that forms a display by applying a voltage to a plurality of previously formed segments to change the light transmittance of the segments.

  The backlight 20a of the liquid crystal panel 20 is a chip type light emitting diode. The backlight 20 a emits white light toward the liquid crystal panel 20. The liquid crystal panel 20 that is transmitted and illuminated by the backlight 20a has a configuration capable of displaying the multi-display unit 19 by light emission.

  The switch 83 switches the display state when the pressing portion 83a is pressed. Specifically, the display control circuit 11 that has detected that the pressing portion 83a of the switch 83 has been pressed for a certain time (for example, about 1 second) returns the accumulated travel distance to the initial state and is displayed on the multi-display portion 19. The trip meter 19c is changed to zero. The display control circuit 11 that has detected that the pressing portion 83a of the switch 83 has been pressed for a short time (for example, less than about 1 second) displays the display state from the trip meter 19c to another trip meter having a different travel distance integration start time. Switch between. Further, after the display is switched to another trip meter, the display control circuit 11 that detects that the pressing portion 83a of the switch 83 is pressed for a short time (for example, less than about 1 second) displays the state from the other trip meter to the odometer. Switch between.

  The movements 13e, 15e, and 17e are electric actuators such as a stepping motor or a cross coil type rotating machine. The movements 13e, 15e, and 17e have shafts that rotate by an angle corresponding to an electrical signal from the outside. The movements 13e, 15e, and 17e are arranged so that the front ends of the shafts extend from the dial plates 13b, 15b, and 17b to the front side, and are fixed to the hands 13a, 15a, and 17a from the front side. Thereby, the movements 13e, 15e, and 17e rotate the hands 13a, 15a, and 17a in accordance with the electric signal from the display control circuit 11 to form information display.

(Characteristic part)
Hereinafter, the characteristic part of the combination meter 100 by 1st embodiment of this invention is demonstrated.

  As shown in FIG. 2, the trip switching unit 21 includes a spring 60, a bushing 50, a front panel 30, a switch 83, and the like with an operation member 70 as a center.

  As shown in FIGS. 2 and 4, the operation member 70 is made of a translucent material such as acrylic or polycarbonate, and has a quadrangular prism shape on the front side in the display direction and a cylindrical shape on the rear side in the display direction. In addition to the contact surface 71, the operation member 70 includes a convex portion 75, an operation surface 77, an incident surface 73, a coating portion 79, and the like.

  The convex portion 75 protrudes from the side surface of the operation member 70 in a direction orthogonal to the display direction. The convex portion 75 forms a display direction front surface 75a and a display direction rear surface 75b. The front surface 75a of the projection 75 in the display direction is locked by the bushing 50 at the locking position of the operation member 70 shown in FIG. The rear surface 75 b in the display direction of the convex portion 75 is urged forward by the spring 60 in the display direction.

  The operation surface 77 has a rectangular shape, and is substantially parallel to the front surface 33 in the display direction of the front panel 30 at a locking position where the convex portion 75 is urged forward by the spring 60 in the display direction and contacts the bushing 50. Is formed. The contact surface 71 is a rear surface in the display direction of the operation member 70 formed at a position facing the switch 83, and the operation member 70 contacts the pressing portion 83a when the operation member 70 is displaced rearward in the display direction. Press. Further, the contact surface 71 is provided so as to be separated from the pressing portion 83a of the switch 83 at the locking position in FIG. An incident surface 73 that faces the light emitting diode 81 is formed on the rear surface in the display direction of the operation member 70 on which the contact surface 71 is formed. The incident surface 73 allows the light emitted from the light emitting diode 81 to enter the operation member 70. In the present embodiment, the incident surface 73 and the contact surface 71 are formed wider than the projected area in the display direction of the pressing portion 83 a of the switch 83 by the same surface of the operation member 70. The coating part 79 is formed so as to cover a predetermined part of the outer surface of the operation member 70, and prevents leakage of light introduced into the operation member 70. The coating part 79 is composed of an inner white coating part and an outer black coating part. Here, the character design 21 a provided on the operation surface 77 is formed by removing the black painted portion on the outer surface side of the painted portion 79. The removal of the black painted portion is performed by erasing the black painted portion with a laser or the like.

  The front panel 30 includes a display direction front surface 33 and a recess 35 that is recessed from the display direction front surface 33 to the display direction rear side. The concave portion 35 accommodates the spring 60 and the convex portion 75 of the operation member 70. A locking groove 35 b for locking the bushing 50 is formed in the peripheral wall 35 c of the recess 35. An opening 31 is formed on the bottom surface 35 a of the recess 35. The opening 31 is formed to be slightly larger than the cross-sectional area in the direction orthogonal to the display direction of the operation member 70 inserted into the opening 31.

  The spring 60 is an elastically deformable member in which a wire made of a thin metal material is formed in a concentric spiral shape. The spring 60 is accommodated in the recess 35 and is positioned on the outer peripheral side of the operation member 70 and on the front side in the display direction of the bottom surface 35a. The spring 60 biases the display direction rear side 75b of the convex portion 75 of the operation member 70 from the display direction rear side to the display direction front side. The spring 60 is compressed in the display direction by being sandwiched between the bottom surface 35 a and the convex portion 75 when a pressing force on the rear side in the display direction is applied to the operation surface 77 of the operation member 70.

  The bushing 50 is formed in a frame shape from ABS resin or the like, and forms an inner peripheral surface 55, an outer peripheral surface 54, a regulating surface 51, a positioning surface 52, and a fixed claw 53. The bushing 50 has an inner peripheral surface 55 fitted on the operation member 70 and an outer peripheral surface 54 fitted on the peripheral wall portion 35 c of the concave portion 35 of the front panel 30. The outer peripheral surface 54 and the inner peripheral surface 55 define positions in a direction orthogonal to the display direction of the operation member 70 with respect to the front panel 30. The restricting surface 51 of the bushing 50 restricts displacement of the operation member 70 toward the front side in the display direction by contacting and locking with the front surface 75a of the projection 75 of the operation member 70. The positioning surface 52 is in contact with the display direction front surface 33 of the front panel 30 and positions the bushing 50 in the display direction with respect to the front panel. The fixing claw 53 is locked in a locking groove 35 b formed in the peripheral wall portion 35 c of the recess 35, and fixes the bushing 50 at a position defined by the positioning surface 52.

  As described above, in the present embodiment, the spring 60 corresponds to the elastic body described in the claims, and the bushing 50 corresponds to the stopper and the stopper member described in the claims.

  In the first embodiment described above, in the operation member 70, when the pressing force on the rear side in the display direction is not applied to the operation surface 77 of the operation member 70, the display direction rear surface 75 b of the convex portion 75 is moved forward in the display direction by the spring 60. By being urged, the display direction front surface 75a of the convex portion 75 is locked at the locking position by the regulating surface 51 of the bushing 50. The factor that causes the position of the operation surface 77 of the operation member 70 relative to the front surface 33 in the display direction of the front panel 30 to vary depending on the product at the locking position of the operation member 70 is that the operation member 70 and the recessed portion 35 of the front panel 30 It becomes an accumulation tolerance obtained by accumulating the processing tolerance and assembly tolerance of the fitted bushing 50. Specifically, the machining tolerance from the positioning surface 52 of the bushing 50 to the regulating surface 51, the machining tolerance from the display direction front surface 75a of the projection 75 of the operation member 70 to the operation surface 77, and the assembly of these assembly tolerances. is there. As described above, in addition to a small number of places where tolerances are accumulated, the bushing 50 and the operation member 70 are small in size with respect to the front panel 30 and the case member 25, so that the machining tolerance can be easily reduced by improving the machining accuracy. it can. Therefore, since the accumulation of accumulation tolerances is suppressed, the operation surface of the operation member 70 can be fixedly positioned with respect to the front surface in the display direction of the front panel, and a vehicle display device with excellent appearance can be provided. It is.

  In addition, in the first embodiment, the case body 23 is configured by assembling the facing member 26 and the case member 25 to each other, which may increase the accumulation tolerance in the case body 23. However, in the locking position, the operation member 70 is locked to the front panel 30 and is not affected by the accumulation tolerance in the case body 23, so that the operation member 70 is operated with respect to the display direction front surface 33 of the front panel 30. The surface 77 can be positioned constant.

  Further, in the first embodiment, since the display direction front surface 75 a of the convex portion 75 protruding from the operation member 70 is locked by the bushing 50, the convex portion 75 of the operation member 70 is arranged after the display direction of the bushing 50. Located on the side. Therefore, the convex portion 75 of the operation member 70 is shielded from the front side in the display direction by the bushing 50 and is hardly visually recognized. Further, since the spring 60 is arranged to urge the display surface rear surface 75a of the convex portion 75 from the rear side in the display direction to the front side in the display direction, the spring 60 is more than the convex portion 75 on the rear side in the display direction of the bushing 50. Furthermore, it is located on the rear side in the display direction. Therefore, the spring 60 is shielded from the front side in the display direction by the bushing 50 and the convex portion 75 and is not easily seen. Therefore, it is possible to provide a vehicular display device that is further improved in appearance.

  When the bushing 50, the convex portion 75 of the operation member 70, and the spring 60 are arranged side by side in the display direction, these configurations expand in the display direction. Then, the position of the operation surface 77 in the locking position is away from the display direction front surface 33 of the front panel 30, and the operation surface 77 of the operation member 70 located at a constant position relative to the display direction front surface 33 of the front panel 30. There is a risk of deteriorating the appearance. Therefore, in the present embodiment, the spring 60 and the convex portion 75 of the operation member 70 are accommodated in the concave portion 35 of the front panel 30, whereby the position of the operation surface 77 at the locking position is set to the front surface 33 in the display direction of the front panel 30. It can be placed closer. Therefore, it is possible to improve the appearance of the operation surface 77 of the operation member 70 positioned at a fixed position with respect to the display direction front surface 33 of the front panel 30.

  In addition, in the first embodiment, an accumulation tolerance is accumulated between the pressing portion 83 a of the switch 83 and the contact surface 71 of the operation member 70. Specifically, the integration tolerance includes the switch 83 having the pressing portion 83a, the circuit board 80 on which the switch 83 is mounted, the case member 25 to which the circuit board 80 is assembled, the turning member 26 to be assembled to the case member 25, and the case member 25. Each of the front panel 30 to be assembled and the operation tolerance 70 of the operation member 70 to be locked to the front panel 30 includes processing tolerances and assembly tolerances. However, the pressing force on the rear side in the display direction is not applied to the operation surface 77 of the operation member 70, and in the operation member 70 in the locking position, the contact surface 71 moves from the pressing portion 83 a of the switch 83 to the front side in the display direction. It leaves | separates and does not press the said press part 83a. In addition, when a pressing force on the rear side in the display direction is applied to the operation surface 77 of the operation member 70, the contact surface 71 of the operation member 70 that is displaced rearward in the display direction with respect to the front panel 30 is The pressing portion 83a is brought into contact with and presses the pressing portion 83a. Therefore, even when the accumulation tolerance due to multiple parts accumulates, the display state of the trip meter 19c can be switched reliably by applying a pressing force to the operation surface 77 of the operation member 70.

  In addition, in the first embodiment, an accumulation tolerance is accumulated between the pressing portion 83a of the switch 83 and the contact surface 71 of the operation member 70 in a direction orthogonal to the display direction in addition to the display direction. Thereby, it becomes easy to produce dispersion | variation also about the direction where the position of the contact surface 71 with respect to the press part 83a is orthogonal to a display direction. However, the contact surface 71 having a larger area than the projected area in the display direction of the pressing portion 83a has the pressing portion 83a even when the position of the contact surface 71 varies in the direction orthogonal to the display direction with respect to the pressing portion 83a. It is possible to reliably press the pressing portion 83a. Accordingly, the display state of the trip meter 19c can be reliably switched by applying a pressing force to the operation surface 77 of the operation member 70.

  In the first embodiment, the light emitted from the light emitting diode 81 adjacent to the switch 83 is incident on the inside of the operation member 70 made of a translucent material from the incident surface 73 of the operation member 70 and is emitted from the operation surface 77. Is done. The operation surface 77 that emits light in this way can improve the appearance by being easy to visually recognize, while the slight variation in the operation surface 77 with respect to the display direction front surface 33 of the front panel 30 is also visually recognized. May be damaged. However, the appearance is not impaired by the action of positioning the operation surface 77 with respect to the front surface 33 in the display direction of the front panel 30.

  Furthermore, in the first embodiment, the pressing portion 83 a of the switch 83 mounted on the circuit board 80 and the operation member 70 are not connected between the light emitting diode 81 mounted on the circuit board 80 and the incident surface 73 of the operation member 70. As with the contact surface 71, the accumulation tolerance is accumulated. Accordingly, the position of the incident surface 73 of the operation member 70 with respect to the light emitting diode 81 is likely to vary in the display direction and the direction orthogonal to the display direction. Then, there is a concern that the state of light incident on the operation member 70 from the incident surface 73 varies from product to product, and the operation surface 77 cannot be emitted uniformly. However, since the light emitting diode 81 is positioned opposite to the rear side of the incident surface 73 in the display direction, the light emitted from the light emitting diode 81 is transmitted from the incident surface 73 to the operation member regardless of variations in the display direction of the incident surface 73. It can enter the inside of 70. Further, since the area is enlarged by forming the incident surface 73 and the contact surface 71 on the same surface of the operation member 70, the light-emitting diode 81 can be arranged on the incident surface 73 even when it varies in the direction orthogonal to the display direction. It can be positioned facing the rear side of the display direction. Therefore, the incident surface 73 allows the light emitted from the light emitting diode 81 to enter the operation member 70. According to these, even when the accumulation tolerance due to multi-components is accumulated, it is possible to suppress the variation in the state of light incident on the operation member 70 from the incident surface 73 and to make the operation surface 77 emit light uniformly, and to look good It is possible to provide a vehicular display device that is excellent in the above.

(Second embodiment)
As shown in FIG. 5, the second embodiment of the present invention is a modification of the first embodiment. The operation surface 77 of the operation member 70 of the second embodiment is located on the same plane as the front surface 33 in the display direction of the front panel 230 at the position where the bushing 50 is engaged. The front panel 230 has a first recess 234 that is recessed toward the rear side in the display direction, and a second recess 235. The first recess 234 houses the front side of the bushing 50 in the display direction. The bottom portion 234 a of the first recess 234 is in contact with the positioning surface 52 of the bushing 50. The second recessed portion 235 is further recessed from the bottom surface 234 a of the first recessed portion 234 to the rear side in the display direction, and accommodates the rear side in the display direction of the bushing 50, the spring 60, and the convex portion 75 of the operation member 70. A locking groove 35 b for locking the bushing 50 is formed in the peripheral wall portion 235 c of the second recess 235. An opening 31 is formed in the bottom surface 235a of the second recess 235.

  In the second embodiment, the operation surface 77 of the operation member 70 and the display direction front surface 33 of the front panel are located on the same plane at the locking position where the operation member 70 is locked to the bushing 50. Therefore, even a slight variation in the operation surface 77 of the operation member 70 with respect to the front surface 33 in the display direction of the front panel is easily visually recognized and easily deteriorates in appearance. However, in the second embodiment, the operation surface 77 of the operation member 70 can be placed at a fixed position with respect to the display direction front surface 33 of the front panel 230 according to the same principle as in the first embodiment. The shine can be improved.

(Third embodiment)
As shown in FIGS. 6-8, 3rd embodiment of this invention is another modification of 1st embodiment. The display design 310 of the third embodiment includes a set of time adjustment units 321h and 321m in place of the trip switching unit 21.

  As shown in FIG. 6, the time adjustment units 321 h and 321 m are switches for switching the display state of the time display 19 b constituting the multi display unit 19. The time adjustment units 321h and 321m are formed with a character design 21a indicating the function of the adjustment units 321h and 321m.

  As shown in FIG. 7, in the third embodiment, switches 383h and 383m are provided corresponding to the time adjustment units 321h and 321m. The switches 383h and 383m switch the display state when the respective pressing portions 83a are pressed. Specifically, the display control circuit 11 that has detected that the pressing portion 83a of the switch 383h has been pressed advances the time displayed by the time display 19b by one hour. Further, the display control circuit 11 that has detected that the pressing portion 83a of the switch 383m has been pressed advances the time displayed by the time display 19b by one minute. Further, the display control circuit 11 that detects that the pressing portion 83a of the switch 383h and the pressing portion 83a of the switch 383m are simultaneously pressed switches the display method of the time display 19b alternately between the 12-hour display and the 24-hour display. .

  In addition to the configuration of the bushing 50 of the first embodiment, the bushing 350 includes a partition wall 356 that divides the inner peripheral surface 55 and the inner peripheral side of the recess 35 into two. Thus, on the inner peripheral surface of the bushing 350 and the inner peripheral side of the recess 35, the pair of operation members 370h and 370m and the pair of springs 60 are accommodated on both sides of the partition wall 356, respectively.

  A pair of switches 383 h and 383 m are mounted on the circuit board 80 at locations facing the contact surfaces 71 of the respective operation members 370 h or 370 m. In the circuit board 80, between the switches 383h and 383m, one light emitting diode 81 is mounted so that light is incident on the contact surface 71 of the operation members 370h and 370m.

  In the third embodiment described above, the operation members 370h and 370m have the display direction rear surface 75b of each convex portion 75 when the pressing force on the rear side in the display direction is not applied to each operation surface 77 of the operation members 370h and 370m. Each spring 60 is biased forward in the display direction. The convex portions 75 of the operation members 370 h and 370 m are locked at the locking position by the restriction surface 51 of the bushing 350. In the locking position, the positions of the operation surfaces 77 of the operation members 370h and 370m with respect to the display direction front surface 33 of the front panel 30 vary for each product due to the following factors. That is, the machining tolerance from the positioning surface 52 of the bushing 350 to the regulating surface 51, the machining tolerance from the display direction front surface 75a of each projection 75 of the operation members 370h and 370m to each operation surface 77, and the assembly of these assembly tolerances. It is. Since the accumulation of accumulation tolerances is suppressed due to the small number of places where tolerances accumulate, the operation surfaces of the operation members 370h and 370m can be positioned with respect to the front surface of the front panel 30 in the display direction. Further, since accumulation of accumulation tolerance is suppressed, it is easy to form the operation surface 77 of the operation member 370h and the operation surface 77 of the operation member 370m on the same plane. Therefore, it is possible to provide a vehicular display device that is excellent in appearance.

  In the third embodiment, when the pressing force on the rear side in the display direction is applied to the operation surface 77 of the operation member 370h, only the spring 60 that biases the operation member 370h is displayed in the display direction of the bottom surface 35a and the projection 75. It is sandwiched between the front surface in the display direction of the rear surface 75a and compressed in the display direction. When the operation member 370h is displaced rearward in the display direction with respect to the front panel 30, the contact surface 71 of the operation member 370h comes into contact with the pressing portion 83a of the switch 383h and can press the pressing portion 83a. . At this time, 370 m remains in the locked position by the biasing force of the spring 60 that biases the operation member 370 h. Similarly, when a pressing force on the rear side in the display direction is applied to the operation surface 77 of the operation member 370m, the contact surface 71 of the operation member 370m contacts and presses the pressing portion 83a of the switch 383m and Member 370h remains in the locked position. Further, when the pressing force on the rear side in the display direction is applied to the respective operation surfaces 77 of the operation member 370h and the operation member 370h, the respective contact surfaces 71 contact the respective pressing portions 83a of the switch 383h and the switch 383m. Will be pressed. Thus, even when the bushing 350 is shared by the two operation members 370h and 370m, the multi-display unit 19 is configured by applying the pressing force on the rear side in the display direction to the operation surfaces 77 of the operation members 370h and 370m. The display state of the time display 19b to be performed can be switched reliably.

(Other embodiments)
Although a plurality of embodiments of the present invention have been described above, the present invention is not construed as being limited to these embodiments, and can be applied to various embodiments without departing from the scope of the present invention. .

  In the first to third embodiments, the stopper described in the claims is provided separately from the front panel 30 as the bushing 50. However, the stopper may be formed directly on the front panel 30.

  In the first to third embodiments, the spiral spring 60 made of a thin metal material is used as the elastic body described in the claims. However, the material and shape of the elastic body are not limited. For example, a rubber material or a resin material may be used, and a leaf spring, a disc spring, or the like may be used. Moreover, you may shape | mold integrally with the operation members 70,370h, 370m.

  In the first to third embodiments, the contact surfaces 71 of the operation members 70, 370h, and 370m are formed by the pressing portions 83a of the switches 83, 383h, and 383m. It is wider than the projected area in the display direction. However, the area of each contact surface 71 may be narrower than the projection area in the display direction of each press portion 83a or the same extent as long as it can contact each press portion 83a.

  In the first to third embodiments, the case body 23 is configured by assembling the case member 25, the facing member 26, and the like. However, the case body 23 may be an integrally molded product. Alternatively, a plurality of members may be assembled to each other.

  In the first to third embodiments, the operation members 70, 370h, and 370m are made of a light-transmitting material, and a coating portion 79 that prevents leakage of incident light is formed on each outer surface. However, instead of the configuration in which the coating portion 79 is formed, the operation members 70, 370h, and 370m may be formed by two-color molding. For example, the outer surface portions of the operation members 70, 370h, and 370m may be formed of a black resin, the center portion may be formed of a translucent resin, and the character design 21a may be provided by printing.

  In the first to third embodiments, the operation surfaces 77 of the operation members 70, 370 h, and 370 m can emit light by radiating the light of the light emitting diode 81 incident from the incident surface 73. However, the operation members 70, 370h, and 370m are formed of a material that does not have translucency, such as ABS resin, so that each operation surface 77 may not emit light.

  In the first to third embodiments, the rear surfaces in the display direction of the operation members 70, 370h, and 370m form the respective contact surfaces 71 and the respective incident surfaces 73. However, the incident surface 73 may not be formed on the same surface as the contact surface 71. Further, the contact surface 71 may be formed as a convex portion that protrudes from the rear surface in the display direction of the operation members 70, 370h, and 370m to the rear side in the display direction.

  In the third embodiment, one light emitting diode 81 is mounted so that light is incident on the contact surface 71 of the operation members 370h and 370m. However, two light emitting diodes 81 may be mounted so as to face the incident surfaces 73 of the operation members 370h and 370m.

  In the first to third embodiments, the present invention is applied to the combination meter 100, and the switch for switching the display state of the multi-display unit 19 displayed on the liquid crystal panel 20 included in the combination meter 100 has been described as an example. The present invention may be applied to all the switches provided in front of the display direction of the front panel in the vehicle display device.

It is a front view which shows the display design of the combination meter by 1st embodiment of this invention. It is a figure which shows the mechanical structure of the combination meter by 1st embodiment of this invention, Comprising: It is the II-II sectional view taken on the line of FIG. It is a block diagram which shows the electric constitution of the combination meter by 1st embodiment of this invention. It is a schematic diagram for demonstrating the characteristic part of 1st embodiment of this invention. It is a figure which shows the mechanical structure of the combination meter by 2nd embodiment of this invention. It is a front view which shows the display design of the combination meter by 3rd embodiment of this invention. It is a block diagram which shows the electric constitution of the combination meter by 3rd embodiment of this invention. It is a figure which shows the mechanical structure of the combination meter by 3rd embodiment of invention, Comprising: It is the VIII-VIII sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Display design, 11 Display control circuit, 13 Speedometer, 15 Water thermometer, 17 Fuel gauge, 13a, 15a, 17a Pointer, 13b, 15b, 17b Dial, 13c, 15c, 17c Scale, 13d, 15d, 17d Movement, 13e Open window, 18 Background display section, 18a Dial panel, 18b Open section, 19 Multi display section, 19a Shift indicator, 19b Clock display, 19c Trip meter, 20 Liquid crystal panel, 20a Backlight, 21 Trip switching section, 321 Clock adjustment Part, 21a character design, 23 case body, 24 cover member, 25 case member, 26 facing member, 30, 230 front panel, 31 opening part, 33 display direction front face, 35 recessed part, 234 first recessed part, 235 second recessed part, 35a, 235 a bottom surface, 35b locking groove, 35c, 235c peripheral wall, 50, 350 bushing (stopper / stopper member), 51 regulating surface, 52 positioning surface, 53 fixing claw, 54 outer peripheral surface, 55 inner peripheral surface, 356 partition wall, 60 Spring (elastic body), 70, 370h, 370m Operation member, 71 Contact surface, 73 Incident surface, 75 Convex portion, 75a Display direction front surface, 75b Display direction rear surface, 77 Operation surface, 79 Paint surface, 80 Circuit board, 81 Light emitting diode, 83, 383h, 383m switch, 83a pressing part, 91 vehicle control device, 100 combination meter (vehicle display device)

Claims (10)

A switch for switching the display state by pressing the pressing portion;
A circuit board on which the switch is mounted;
A case body to which the circuit board is assembled;
A front panel having an opening that is attached to the case body and is shifted to the front side in the display direction from the switch;
A stopper provided at the periphery of the opening;
An operating member that is inserted into the case body so as to be reciprocally displaceable in the display direction through the opening, and is locked from the front side in the display direction by the stopper at the locking position, and is displayed on the front panel at the locking position. The operation surface along the front surface in the direction is separated from the pressing portion to the front side in the display direction at the locking position, and the pressing force on the rear side in the display direction is applied to the operation surface to contact the pressing portion and the pressing An operation member having a contact surface that presses the portion;
An elastic body for urging the operation member forward in the display direction;
A vehicle display device comprising:   The vehicle display device according to claim 1, wherein the stopper is formed by a stopper member assembled to a periphery of the opening.   The vehicular display device according to claim 1, wherein the elastic body biases the operation member from the rear side in the display direction to the front side in the display direction. The operation member has a convex portion protruding in a direction intersecting the display direction,
4. The front surface in the display direction of the convex portion is locked by the stopper at the locking position, and the rear surface in the display direction of the convex portion is urged forward in the display direction by the elastic body. Vehicle display device. The front panel has a recess recessed on the rear side in the display direction,
The opening is formed on the bottom surface of the recess,
The vehicle display device according to claim 4, wherein the elastic body and the convex portion are accommodated in the concave portion.   The vehicle display device according to claim 1, wherein an area of the contact surface is larger than a projected area of the pressing portion in a display direction.   The vehicle display device according to any one of claims 1 to 6, wherein the case body is configured by assembling a plurality of members to each other.   The vehicular display device according to any one of claims 1 to 7, wherein the operation surface is positioned on the same plane as a front surface in the display direction of the front panel at the locking position. The circuit board is mounted with a light emitting element that emits light,
The operation member is made of a translucent material and has an incident surface on which light emitted from the light emitting element is incident,
The vehicular display device according to claim 1, wherein the operation surface emits light by radiating light incident on the operation member from the incident surface. The light emitting element is mounted on the circuit board adjacent to the switch,
The vehicle display device according to claim 9, wherein the incident surface and the contact surface are the same surface of the operation member.

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