JP2021041888A - Driving device and head-up display device - Google Patents

Abstract

To provide a driving device used in a head-up display device which inhibits occurrence of abnormal noise, and to provide the head-up display device.SOLUTION: A driving device 10 has an attachment part 51 for attaching the driving device to a head-up display device 12 and includes: a movable member 52; a driving part 54 which has a driving source 53 and drives the movable member 52; and a frame 55 to which the driving part 54 is attached. The frame 55 includes: a first plate part 56 which fixes the driving source 53; and another part 66 which is combined with the first plate part 56 to hold a driving part component different from the driving source 53. The attachment part 51 is provided at the first plate part 56.SELECTED DRAWING: Figure 3

Description

The present invention relates to a driving device for moving a movable member by a driving force of a driving unit and a head-up display device including the driving device.

Conventionally, a head-up display device has been known in which the display light from a display device is reflected by a reflecting member (concave mirror) and projected onto the windshield of the vehicle, and the projected display image (virtual image) is visually recognized by the driver of the vehicle. (Patent Document 1).
In such a head-up display device, in order to adjust the reflection angle of the display light by the reflecting member, a driving device that rotates a mirror holder holding a concave mirror about a predetermined rotation axis is generally used (patented). Document 2).

Patent Document 2 describes a driving device that rotates a mirror holder by transmitting a driving force from the mirror holder to a protruding piece that partially protrudes outward in the radial direction of the rotating shaft.
This drive device includes a motor as a drive source. Specifically, a stepping motor, a lead screw (feed screw) that is rotationally driven by the stepping motor, a guide shaft arranged in parallel with the lead screw, a frame that supports the lead screw and the guide shaft, and a screw on the lead screw. A slider provided with a matching nut and formed with a guide hole through which a guide shaft penetrates, and has a movable member that reciprocates along the axial direction of the lead screw as the lead screw rotates. However, a support portion for supporting the protruding piece of the mirror holder is provided.
In this way, the movable member that supports the protruding piece of the mirror holder moves back and forth, so that the mirror holder can be rotated.

Japanese Unexamined Patent Publication No. 2015-102700 JP-A-2018-54063

In the drive device, a motor as a drive source and components such as a lead screw that transmits the power of the motor to the movable member to move the movable member are attached to the frame, and the frame is inside the housing of the head-up display device. It is fixed to the mounting location of. When the motor is driven, abnormal noise may be generated due to the resonance of the stator caused by the rotation of the rotor.

An object of the present invention is to provide a drive device used in a head-up display device capable of suppressing the generation of abnormal noise, and a head-up display device.

In order to achieve the above object, the drive device according to the present invention is a drive device having a mounting portion for mounting on the head-up display device, and has a movable member and a drive unit that has a drive source and drives the movable member. A frame to which the drive unit is attached, and the frame includes a first plate portion for fixing the drive source and a drive unit component member different from the drive source in combination with the first plate portion. It is characterized in that it is provided with another portion to be held, and the mounting portion is provided on the first plate portion.
Here, the "plate portion" in the "first plate portion" is not limited to a perfect plate shape in the present specification, and means a portion having a fixing surface portion for fixing a drive source such as a motor. It is used in.

According to this aspect, the frame includes a first plate portion for fixing the drive source and another portion for holding a drive portion component other than the drive source in combination with the first plate portion. The first plate portion is provided with the mounting portion for mounting on the head-up display device. As a result, even if the drive device including the drive source and the frame has a structure in which the drive device resonates with the drive of the drive source, the mounting portion of the drive device (located on the first plate portion of the frame). By attaching and fixing the attachment member at the attachment point in the housing of the head-up display device, the resonance frequency of the drive device due to the vibration generated by the drive source can be shifted. Therefore, the generation of abnormal noise can be suppressed.

Further, in the drive device, the drive unit includes a lead screw having a male screw portion and a female screw portion provided on the movable member and attached to the male screw portion of the lead screw. It is preferable that the drive source has a structure in which the movable member is moved in the axial direction by rotating the lead screw.

In the present embodiment, in the structure in which the drive source rotates the reed screw to move the movable member in the axial direction, abnormal noise due to the resonance is likely to occur, so that the effect of applying the present invention is great. I can say.

Further, in the driving device of the present invention, the frame includes the first plate portion, the second plate portion that faces the first plate portion at a distance from the first plate portion, and the first plate portion and the second plate portion. It is preferable that the first plate portion, the second plate portion, and the third plate portion are provided with a third plate portion to be integrally connected, and the first plate portion, the second plate portion, and the third plate portion are formed by being bent from a single metal plate.

In this embodiment, the frame has a structure in which the first plate portion, the second plate portion, and the third plate portion are bent from a single metal plate. Since such a frame structure tends to generate abnormal noise due to the resonance, it can be said that the effect of applying the present invention is great.
Further, in the case of a structure formed by bending from a single metal plate, the first plate material is pressed once for bending, but the third plate portion is pressed twice for bending. Therefore, the flatness of the first plate portion after the bending process is less reduced than the flatness of the third plate portion. Therefore, since the mounting portion is provided on the first plate portion having a small decrease in flatness due to the bending process, the state in which the mounting member of the head-up display device is mounted and fixed to the mounting portion is stable. However, the rigidity is also appropriately improved, and thus the generation of abnormal noise can be effectively suppressed.
Further, the mounting state of the drive source fixed to the first plate portion is also stable, and the generation of abnormal noise can be suppressed from this point as well.

Further, according to the present invention, in the drive device, the drive device includes a guide shaft provided between the first plate portion and the third plate portion to guide the moving direction of the movable member, and the movable member has a through hole. It is preferable that the guide shaft penetrates the through hole.

According to this aspect, since the movable member is guided in the moving direction with the guide shaft penetrating the through hole, stable movement can be realized.

Further, in the present invention, in the drive device, it is preferable that the mounting portion is provided on the side of the first plate portion on which the drive source is arranged.

In this embodiment, since the mounting portion is provided on the side of the first plate portion on which the drive source is arranged, the width of the first plate portion can be easily increased by the amount of the mounting portion. The mounting portion can be formed.

Further, in the present invention, in the driving device, it is preferable that the first plate portion and the third plate portion have the same width.

In this embodiment, since the widths of the first plate portion and the third plate portion are the same, the width of the third plate portion is also increased by the amount of the mounting portion as in the case of the first plate portion. As a result, the rigidity of the first plate portion and the third plate portion is increased, and the generation of abnormal noise from this point can be suppressed.

Further, according to the present invention, in the drive device, the mounting portion may be provided on the side of the first plate portion opposite to the side on which the drive source is arranged.

In this embodiment, the mounting portion is provided on the side of the first plate portion opposite to the side on which the drive source is arranged. As a result, the mounting position of the mounting member of the head-up display device can be partially overlapped with the drive source, so that it is possible to suppress an increase in the size of the first plate portion in the width direction. Moreover, the resonance can be effectively suppressed.

Further, in the present invention, in the driving device, it is preferable that the first plate portion has a larger width than the third plate portion.

In this embodiment, if the first plate portion has a structure wider than that of the third plate portion, when the mounting member of the head-up display device is attached to the mounting portion, the first plate portion and the third plate portion of the mounting member are attached. It can be done without interference.

Further, in the present invention, in the driving device, it is preferable that the mounting portion is formed with a through hole through which a screw for fastening passes.

In this embodiment, since the mounting portion is formed with a through hole through which a screw for fastening is passed, the mounting member of the head-up display device can be easily mounted on the mounting portion by the screw. it can.

Further, in the present invention, it is preferable that the drive source is a stepping motor in the drive device.

In this embodiment, since the drive source is a stepping motor, the accuracy of the moving position of the movable member can be easily improved.

Further, in the present invention, it is preferable that the stepping motor is microstep driven in the driving device.

In this embodiment, since the stepping motor is driven by microstepping, the rotation of the reed screw becomes smooth.

Further, the present invention includes a display light emitting unit that emits information to be displayed, a reflector that can swing around a rotation axis, reflects the emitted information and projects it onto an object to be projected, and the reflection. Claim that the projecting piece formed in the vessel is held by the movable member, and the movable member is moved along the axial direction of the lead screw to swing the reflector and adjust the projection direction of the information. 1. The drive device according to any one of claims 11 and 11.
It is a head-up display device characterized by this.
According to this aspect, the same action and effect as any one of the above-described aspects can be obtained.

According to the present invention, it is possible to provide a drive device used in a head-up display device capable of suppressing the generation of abnormal noise, and a head-up display device.

It is explanatory drawing which shows the outline of the head-up display device which has the display device which mounted the drive device which concerns on Embodiment 1 of this invention. FIG. 5 is a side sectional view showing a display device on which the drive device according to the first embodiment is mounted. It is a perspective view which shows the drive device which concerns on Embodiment 1. FIG. FIG. 5 is a perspective view of the drive device according to the first embodiment as viewed from a direction different from that of FIG. It is a side view of the state which the drive device which concerns on Embodiment 1 is attached to the attachment member of the head-up display device. It is a perspective view which shows the drive device which concerns on Embodiment 2 of this invention. It is a perspective view which looked at the drive device which concerns on Embodiment 2 from the direction different from FIG. It is a side view of the state which the drive device which concerns on Embodiment 2 is attached to the attachment member of the head-up display device.

Hereinafter, embodiments of the drive device and the head-up display device according to the present invention will be described in detail with reference to FIGS. 1 to 8.
In the following description, first, an outline of a head-up display device having a display device equipped with a drive device according to an embodiment of the present invention will be described based on FIGS. 1 and 2. Next, a specific configuration of the drive device according to the first embodiment of the present invention will be described with reference to FIGS. 3 to 5, and then a second embodiment of the present invention will be described with reference to FIGS. 6 to 8.
In the following description, the three axes orthogonal to each other are the X-axis, the Y-axis, and the Z-axis, respectively, as shown in each figure. In this case, the upper part of FIG. 3 coincides with the direction along the Z axis. The X-axis and the Y-axis are orthogonal to the Z-axis.

[Embodiment 1]
<Overview of head-up display device> (See Fig. 1 and Fig. 2)
As shown in FIG. 1, the head-up display device 12 has a display device 18 inside the instrument panel 16 of the vehicle 14. The display device 18 emits a display light L corresponding to the information to be displayed, hits the windshield 20 as a projected member, reflects the light L in the direction of the driver 22 of the vehicle 14, and displays a virtual image (display image) V. Is supposed to do. In other words, the head-up display device 12 projects the display light L emitted from the display light emitting unit 24 described later of the display device 18 onto the windshield 20, and the virtual image V obtained by this projection is visually recognized by the driver 22. It is a device to make it. As a result, the driver 22 can observe the virtual image V by superimposing it on the landscape.

That is, as shown in FIG. 2, the head-up display device 12 according to the present embodiment, as the display device 18, has a display light emitting unit 24 that emits display light L corresponding to information to be displayed, and a rotation axis O. A reflector 28 that can swing around the windshield 20 that reflects the emitted display light L and hits the windshield 20 that is a projected member, and a movable member 44a provided on the reflector 28, which will be described later. A drive device 10 described later, which is held by 5 and moves the movable member 5 along the axial direction Y of the lead screw 9 described later, swings the reflector 28 to adjust the direction of the display light L. I have.
Hereinafter, each component will be specifically described.

<Display device configuration> (see Fig. 2)
As shown in FIG. 2, the display device 18 has a display light emitting unit 24 inside the housing 30, a first reflector 26 that does not swing, and a second reflector 28 that swings, as an example. It is configured by providing.

≪Display light emitting part≫
In the present embodiment, the display light emitting unit 24 includes a light source 32 and a liquid crystal display element 34. Of these, the light source 32 is composed of a light emitting diode mounted on the lead wire substrate R. On the other hand, the liquid crystal display element 34 is a thin film transistor (TFT) type display element that transmits the irradiation light from the light source 32 to form the display light L, and is provided in front of the light source 32 (directly above in FIG. 2). ing.

Then, the liquid crystal display element 34 receives information to be displayed by light emitted from a light source 32 arranged behind (directly below in FIG. 2) based on a drive signal from a control unit (not shown), for example, the speed of the vehicle 14. And the engine speed is injected by numerical display.
The information to be displayed is not limited to the speed of the vehicle 14 and the engine speed. Further, the display form is not limited to the numerical display, and any display form such as a graph display can be adopted.
Further, the display light emitting unit 24 outputs the display light L composed of light in the visible wavelength range, and as an example, a light source 32 that mainly emits red light having an emission wavelength range of 610 nm to 640 nm is used. It can be used.

≪Reflector≫
In the present embodiment, the first reflector 26 includes a cold mirror 36 and a mounting member 38 for fixing the cold mirror 36 in the box-shaped housing 30. Of these, the cold mirror 36 faces the surface of the liquid crystal display element 34 on the side that emits the display light L, and is fixed at a position and orientation such that the optical axes of the display light L intersect. The cold mirror 36 has a role of reflecting the display light L emitted from the display light emitting unit 24 toward the concave mirror 40 of the second reflector 28.

The cold mirror 36 comprises a substantially rectangular glass substrate 36a and a first reflective layer 36b formed by vapor deposition or the like on the surface of the glass substrate 36a, that is, the surface of the second reflector 28 facing the concave mirror 40. Be prepared.
The first reflective layer 36b is composed of a multi-layer interference film having a different film thickness. On the other hand, the mounting member 38 is made of, for example, a black synthetic resin material, and is mounted in a state of being fixed to the housing 30.

Further, as the cold mirror 36, one that reflects light in the visible wavelength range of 450 nm to 750 nm including the emission wavelength range of the display light emitting unit 24 with high reflectance is applied. That is, the cold mirror 36 is used to reflect light other than the visible wavelength region, particularly heat rays of infrared rays or sunlight which are light in the infrared wavelength region, with a low reflectance of, for example, 15% or less.
The light that is not reflected by the first reflecting layer 36b is transmitted through the cold mirror 36. Further, in the present embodiment, the cold mirror 36 is arranged at a position where it cannot be directly seen from the translucent cover 42 described later of the housing 30 like the display light emitting unit 24, and light from the outside such as sunlight can be emitted. It is designed not to hit directly.

The second reflector 28 includes a concave mirror 40 and a mirror holder 44 that holds the concave mirror 40. The concave mirror 40 has, for example, a second reflective layer 40a deposited on the concave surface of a resin substrate formed of polycarbonate. The concave mirror 40 magnifies the display light L emitted from the liquid crystal display element 34 and reflected by the cold mirror 36, passes through the translucent cover 42 of the housing 30, and reflects the display light L toward the windshield 20. Has a role to play.
The concave mirror 40 is arranged so that the second reflective layer 40a faces the cold mirror 36 and the translucent cover 42 of the housing 30. Further, the concave mirror 40 is arranged at a position visible from the translucent cover 42.

The mirror holder 44 is formed of a mixed resin material as an example, and is pivotally supported by a bearing portion (not shown) provided on the housing 30 side in a direction orthogonal to the optical axis of the display light L (paper surface in FIG. 2). It has a swing axis O extending in the front-rear direction). As a result, the mirror holder 44 and the concave mirror 40 held by the mirror holder 44 can swing around the swing axis O, and the projection direction of the display light L can be adjusted by changing the angular position of the mirror holder 44. It is configured as follows.
A rod-shaped projecting piece 44a projecting outward in the radial direction of the swing shaft O is integrally formed on the mirror holder 44, and the projecting piece 44a exerts a driving force from a driving device 10 described later. The mirror holder 44 is configured to be able to swing by receiving and moving.

≪Housing≫
The housing 30 is made of die-cast aluminum as an example, and has a configuration in which the open upper surface of the container-shaped lower case body 48 having an open upper surface is closed by covering the open upper surface of the lid-shaped upper case body 46. There is. Then, the display light emitting unit 24, the first reflector 26, the second reflector 28, and the driving device 10 are housed in the internal space 50 of the upper case body 46 and the lower case body 48. There is.
Further, in the upper case body 46, an opening 46a is formed at a position facing the concave mirror 40 in the second reflector 28, and a translucent cover 42 is arranged so as to close the opening 46a. ..

The translucent cover 42 is formed of a synthetic resin material having excellent translucency such as acrylic resin, and serves as a light transmissive member through which the display light L reflected by the concave mirror 40 is transmitted (passed). It has a function. As a result, the display light L reflected by the concave mirror 40 passes through the translucent cover 42 provided on the upper case body 46 of the housing 30 and is projected onto the windshield 20, whereby the display of the virtual image V can be visually recognized. It is configured as follows.

<Drive device> (See FIGS. 3 to 5)
The drive device 10 of the present embodiment has a mounting portion 51 for mounting on the head-up display device 12. The drive device 10 includes a movable member 52, a drive unit 54 having a motor 53 as a drive source and driving the movable member 52, and a frame 55 to which the drive unit 54 is attached. The frame 55 includes a first plate portion 56 for fixing the motor 53, and another portion 66 for holding a drive unit component (described later) different from the motor 53 in combination with the first plate portion 56, and the first plate. A mounting portion 51 is provided on the portion 56.
Here, the "plate portion" in the "first plate portion 56" is not limited to a perfect plate shape in the present specification, and is a portion having a fixing surface portion for fixing a drive source such as a motor 53. It is used in the sense of.

In the present embodiment, the frame 55 integrally connects the first plate portion 56, the second plate portion 57 which is separated from the first plate portion 56 and faces the first plate portion 56, and the first plate portion 56 and the second plate portion 57. A third plate portion 58 is provided. The second plate portion 57 and the third plate portion 58 form the other portion 66. The first plate portion 56, the second plate portion 57, and the third plate portion 58 are formed by being bent from a metal plate 59 made of a single flat surface by press working.
Hereinafter, the configuration of the drive device 10 will be specifically described.

≪Drive part≫
The drive unit 54 includes a lead screw 63 having a male screw portion 62, and a female screw portion 61 provided on the movable member 52 and attached to the male screw portion 62 of the lead screw 63. Then, the motor 53 is configured to move the movable member 52 in the axial direction X by rotating the reed screw 63. The movable member 52 has a configuration in which the lead screw 63 and the male screw portion 62 are rotated by the motor 53, and the power thereof is transmitted to the female screw portion 61 to move in the axial direction X.
The movable member 52 has a configuration in which the pairing holding portions 64 and 65 sandwich the protruding piece 44a provided on the reflector 28.

In the present embodiment, the lead screw 63 is a linear motion type formed integrally with the rotation shaft of the motor 53. Needless to say, the lead screw 63 is not limited to the linear motion type, and may have a structure in which the speed is increased by a gear train from the pinion gear of the rotating shaft of the motor 53.

The motor 53 is a stepping motor in the present embodiment, and is configured to be microstep-driven by a control signal from a control unit (not shown). That is, the motor 53 rotates at a fine step angle.
Since the motor 53 is a stepping motor and the stepping motor 53 is configured to be microstepped, the reed screw 63 rotates smoothly. Further, the accuracy of the moving position of the movable member 52 is improved.

As shown in FIGS. 3 and 4, in the present embodiment, the drive unit 54 is bridged between the first plate portion 56 and the third plate portion 58 in addition to the above configuration, and the movable member 52 A cylindrical guide shaft 67 that guides the moving direction is provided. Further, the movable member 52 is provided with a through hole 68, and the guide shaft 67 penetrates through the through hole 68. That is, it includes a guide shaft 67 provided along the lead screw 63. The guide shaft 67 guides the movement of the movable member 52 in the axial direction X.
Since the movable member 52 is guided in the moving direction X with the guide shaft 67 penetrating the through hole 68, stable movement can be realized.

≪Frame≫
As described above, the frame 55 includes a first plate portion 56 to which the motor 53 is fixed, a second plate portion 57 that is separated from the first plate portion 56 and faces the first plate portion 56, and the first plate portion 56 and the second plate portion. A third plate portion 58 for integrally connecting the 57 is provided.
As shown in FIG. 5, in the present embodiment, the first plate portion 56 and the second plate portion 57 are parallel to each other, and stand up at both end positions of the third plate portion 58 in the axial direction X. Is formed in. The frame 55 is bent from a metal plate 59 made of a single flat surface by press working to form a first plate portion 56, a second plate portion 57, and a third plate portion 58.

As shown in FIGS. 3 and 4, the first plate portion 56 is formed with a through hole 71 through which the base end portion of the lead screw 63 is passed when the motor 53 is attached. A fixing hole 72 for fixing the base end of the guide shaft 67 is further formed in the first plate portion 56.
The second plate portion 57 is formed with a fixing hole 74 for fixing the bearing portion 73 that rotatably supports the tip portion of the lead screw 63 around the axis. The second plate portion 57 is further formed with an assembly hole 75 for assembling the other end of the guide shaft 67.
The third plate portion 58 is configured such that a surface facing the movable member 52 is formed on a flat surface 76, and two slide portions 77 of the movable member 52 come into contact with the flat surface 76 to regulate rotation. ..

A mounting portion 82 for mounting the substrate 81 is formed on the upper end portion of the first plate portion 56 and on the upper side of the motor 53. The mounting portion 82 is a member separate from the first plate portion 56, and is fastened to the first plate portion 56 by two screws 83. The mounting portion 82 is configured to hold the substrate 81 in a snap-fit structure.

A position detecting member 85 for detecting the position of the movable member 52 in the X-axis direction is arranged on the substrate 81. The position detection member 85 is a switch having a pressing portion 86. When the movable member 52 pushes the pressing portion 86, it is configured to sense that the movable member 52 is located at the origin position.
In FIGS. 3 and 4, reference numeral 87 is a terminal of the position detection member 85, and reference numeral 88 is a terminal of the motor 53. The terminals 87 and 88 are soldered to the substrate 81. A plurality of lead wires for the position detection member 85 and the motor 53 are connected to the substrate 81, but the illustration thereof is omitted.

≪Mounting part≫
As described above, the drive device 10 has a mounting portion 51 for mounting on the head-up display device 12. The mounting member 91 of the head-up display device 12 is mounted on the mounting portion 51 of the drive device 10. The mounting portion 51 is arranged on both sides of the motor 53 in the Y-axis direction, in other words, on both sides of the lead screw 63.
Specifically, a through hole 93 through which the screw 92 is passed is formed in the first plate portion 56. Here, the case where the number of through holes 93 is four in total is shown, but two or more through holes 93 may be used as long as they can be firmly attached to the attachment member 91.

In the present embodiment, the mounting portion 51 is provided on the side of the first plate portion 56 of the frame 55 on which the motor 53 is arranged. In this case, the screw 92 is inserted into the through hole 93 from the movable member 52 side of the first plate portion 56 and fastened.
Since the mounting portion 51 is formed with a through hole 93 through which the fastening screw 92 passes, the mounting member 91 of the head-up display device 12 can be easily mounted on the mounting portion 51 by the screw 92.
Here, as shown in FIGS. 3 and 4, in the frame 55, the first plate portion 56 and the third plate portion 58 are formed to have the same width, that is, dimensions in the Y-axis direction.

<Explanation of the action and effect of the first embodiment>
(1) According to the present embodiment, the frame 55 holds a drive unit component other than the motor 53 in combination with the first plate portion 56 for fixing the motor 53 as a drive source and the first plate portion 56. The first plate portion 56 is provided with an attachment portion 51 for attaching to the head-up display device 12. As a result, even if the drive device 10 including the motor 53 and the frame 55 has a structure in which the drive device 10 resonates with the drive of the motor 53, the mounting portion 51 of the drive device 10 is inside the housing 30 of the head-up display device 12. By attaching and fixing the attachment member 91 at the attachment location of the motor 53, the resonance frequency of the drive device 10 due to the vibration generated by the motor 53 can be shifted. Therefore, the generation of abnormal noise can be suppressed.

(2) Further, in the structure in which the motor 53 rotates the reed screw 63 to move the movable member 52 in the axial direction X, abnormal noise due to the resonance is likely to occur, so that the effect of applying the present invention is great. It can be said that.

(3) Further, in the present embodiment, the frame 55 has a structure in which the first plate portion 56, the second plate portion 57, and the third plate portion 58 are bent from a single metal plate 59. Since such a frame structure tends to generate abnormal noise due to the resonance, it can be said that the effect of applying the present invention is great.
Further, in the case of a structure formed by bending from a single metal plate 59, the first plate member 56 is pressed once for bending, but the third plate portion 58 is pressed for bending. Since it is twice, the flatness of the first plate portion 56 after the bending process is less decreased than the flatness of the third plate portion 58. Therefore, since the mounting portion 51 is provided on the first plate portion 56 with less decrease in flatness due to the bending process, the mounting member 91 of the head-up display device 12 is mounted and fixed to the mounting portion 51. Is stable, and the rigidity is appropriately improved, so that the generation of abnormal noise can be effectively suppressed.
Further, the mounting state of the motor 53 fixed to the first plate portion 56 is stable, and the generation of abnormal noise can be suppressed from this point as well.

Further, in the present embodiment, since the mounting portion 51 is provided on the side where the motor 53 of the first plate portion 56 is arranged, the width of the first plate portion 56 can be increased by the amount of the mounting portion 51. , The mounting portion 51 can be easily formed.
Further, since the width of the first plate portion 56 and the width of the third plate portion 58 are the same, the width of the third plate portion 58 is also increased by the amount of the mounting portion 51 as in the case of the first plate portion 56. As a result, the rigidity of the first plate portion 56 and the third plate portion 58 is increased, and the generation of abnormal noise from this point can be suppressed.

[Embodiment 2]
Next, the second embodiment of the drive device according to the present invention will be described with reference to FIGS. 6 to 8. The drive device 10 according to the second embodiment has a different position from that of the first embodiment in that the mounting portion 51 is provided on the first plate portion 56, but other configurations are the same as those of the first embodiment. Therefore, the same reference numerals are given to the parts having the same configuration as that of the first embodiment, and the description thereof will be omitted.

In the present embodiment, the mounting portion 51 is provided on the side of the first plate portion 56 opposite to the side on which the motor 53 is arranged. The width of the first plate portion 56 is formed to be larger than that of the third plate portion 58. In other words, the third plate portion 58 is formed to be smaller in width than the first plate portion 56.
According to the present embodiment, the mounting portion 51 is provided on the side of the first plate portion 56 opposite to the side on which the motor 53 is arranged. As a result, the mounting position of the mounting member 91 of the head-up display device 12 can be partially overlapped with the motor 53, so that the increase in size of the first plate portion 56 in the width direction (Y direction) can be suppressed. it can. Moreover, the resonance can be effectively suppressed.
Further, since the first plate portion 56 has a structure wider than that of the third plate portion 58, when the attachment member 91 of the head-up display device 12 is attached to the attachment portion 51, the first plate portion 56 and the third plate portion 58 of the attachment member 91 are attached. It can be done without any interference.

[Other Embodiments]
The drive device 10 and the head-up display device 12 according to the present invention are basically having the above-described configurations, but the partial configuration may be changed within a range not deviating from the gist of the present invention. Of course, it is also possible to omit it.
As the position detecting member 85, a contact type switch, a Hall element, a photo interrupter, or the like can also be used.

10 ... drive device, 12 ... head-up display device, 14 ... vehicle,
16 ... Instrument panel, 18 ... Display device, 20 ... Windshield,
22 ... driver, 24 ... display light emitting part, 26 ... first reflector,
28 ... second reflector (reflector), 30 ... housing, 32 ... light source,
34 ... Liquid crystal display element, 36 ... Cold mirror, 36a ... Glass substrate,
36b ... 1st reflective layer, 38 ... mounting member, 39 ... solder connection hole,
40 ... concave mirror, 40a ... second reflective layer, 41 ... solder connection hole,
42 ... Translucent cover, 43 ... Pressing part, 44 ... Mirror holder, 44a ... Projecting piece,
45a, 45b ... Through hole, 46 ... Upper case body, 46a ... Opening,
47 ... Engagement part, 48 ... Lower case body, 49 ... Protruding part, 50 ... Internal space,
51 ... Mounting part, 52 ... Movable member, 53 ... Motor (drive source), 54 ... Drive part,
55 ... frame, 56 ... first plate, 57 ... second plate, 58 ... third plate,
59 ... Metal plate, 61 ... Female threaded part, 62 ... Male threaded part,
63 ... Reed screw, 64 ... Holding part, 65 ... Holding part, 66 ... Other part,
67 ... Guide shaft, 68 ... Through hole, 71 ... Through hole, 72 ... Fixing hole,
73 ... Bearing part, 74 ... Fixing hole, 75 ... Assembling hole, 76 ... Flat surface,
77 ... Slide part, 81 ... Board, 82 ... Mounting part, 83 ... Screw,
85 ... position detection member, 86 ... pressing part, 87 ... terminal, 88 ... terminal,
91 ... Mounting member, 92 ... Screw, 93 ... Through hole

Claims (12)

A drive device having a mounting part for mounting on a head-up display device.
Movable members and
A drive unit that has a drive source and drives the movable member,
A frame to which the drive unit is attached is provided.
The frame is
The first plate portion for fixing the drive source and
It is provided with another part that holds a drive part component other than the drive source in combination with the first plate part.
The mounting portion is provided on the first plate portion.
A drive device characterized by that. In the drive device according to claim 1,
The drive unit
A reed screw with a male screw part and
A female screw portion provided on the movable member and attached to the male screw portion of the lead screw is provided.
The drive source rotates the reed screw to move the movable member in the axial direction.
A drive device characterized by that. In the drive device according to claim 1 or 2.
The frame is
The first plate portion, the second plate portion that faces the first plate portion at a distance from the first plate portion, and the third plate portion that integrally connects the first plate portion and the second plate portion are provided.
The first plate portion, the second plate portion, and the third plate portion are formed by bending from a single metal plate.
A drive device characterized by that. In the drive device according to claim 3,
A guide shaft provided between the first plate portion and the third plate portion to guide the moving direction of the movable member is provided.
The movable member has a through hole, and the guide shaft penetrates the through hole.
A drive device characterized by that. In the drive device according to any one of claims 1 to 4.
The mounting portion is provided on the side of the first plate portion on which the drive source is arranged.
A drive device characterized by that. In the drive device according to claim 5,
The width of the first plate portion and the third plate portion is the same.
A drive device characterized by that. In the drive device according to any one of claims 1 to 4.
The mounting portion is provided on the side of the first plate portion opposite to the side on which the drive source is arranged.
A drive device characterized by that. In the drive device according to claim 7,
The width of the first plate portion is larger than that of the third plate portion.
A drive device characterized by that. In the drive device according to any one of claims 1 to 8.
The mounting portion is formed with a through hole through which a screw for fastening passes.
A drive device characterized by that. In the drive device according to any one of claims 1 to 9.
The drive source is a stepping motor.
A drive device characterized by that. In the drive device according to claim 10,
The stepping motor is microstepped.
A drive device characterized by that. A display light emitting unit that emits display light corresponding to the information to be displayed,
A reflector that can swing around a rotation axis and reflects the emitted display light and hits the projected member.
A claim in which a protruding piece provided on the reflector is held by a movable member, and the movable member is moved along the axial direction of a lead screw to swing the reflector and adjust the direction of the display light. The drive device according to any one of claims 1 to 11.
To prepare
A head-up display device characterized by this.

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