JP5958328B2 - Combiner storage device, head-up display device - Google Patents

Description

  The present invention relates to a combiner storage device and a head-up display device including the combiner storage device.

  An example of a combiner storage device related to a conventional head-up display device is disclosed in Patent Document 1. Such a storage device for a combiner is equipped with a combiner, a movable support that is mounted by attaching the combiner, and moves by linearly sliding along the rack, and two pins provided on the movable support. The movable support is mainly composed of a first rail and a second rail that can be held, and the driving means slides linearly along the rack, so that the movable support becomes the first rail and the second rail. The combiner is housed or protruded in the case.

Special table 2009-515768

  However, since the combiner storage device described in Patent Document 1 moves the combiner by sliding two pins provided on the movable support along the two rails, the two pins, the two rails, If the sliding of the rail does not go smoothly and the frictional force of one of the rails increases, there is a risk that the combiner will rattle during movement. Furthermore, when the combiner is held in a fixed state such as a protruding state in which the combiner is protruded or a storage state in which the combiner is stored, the combiner is used for engagement between the pin on which the combiner is mounted and the rail, and movable support. Since the structure is held only by the engagement between the driving means and the rack provided, there is a possibility that the combiner will rattle due to vibration and generate abnormal noise.

  Therefore, in the Japanese Patent Application No. 2012-07811, the present applicant uses a four-bar link, puts the combiner in the retracted state by the driving force, and puts the combiner in the protruding state by the restoring force (tension) of the elastic member. Suppresses rattling during combiner movement without using a combiner moving structure, and also constantly applies driving force and restoring force to the four-bar link to suppress rattling due to vibration when the combiner moves and when the combiner stops. A storage device for a combined combiner is disclosed.

  However, in such a storage device for a combiner, the elastic member is held in an extended state when the combiner is stored. In many vehicles, the stopping time is much longer than the starting time, and the elastic member is held in an extended state while the vehicle is stopped. There was a risk that the mating member would be burdened and lead to deterioration.

  Therefore, in view of the above problems, the present invention provides a combiner storage device and a head-up display device that does not impose a burden on components during storage of the combiner while suppressing backlash due to vibration or vibration during movement of the combiner. Objective.

  In order to achieve the above object, the combiner storage device according to the first aspect of the present invention condenses the display light from the concave surface side by condensing the display light by a combiner having a concave surface to which the display light representing the display image reaches. A combiner storage device capable of storing the combiner in a housing of a head-up display device for visually recognizing the display image, the holding unit being movable with respect to the housing and holding the combiner; It is an axis extending in the left-right direction as viewed from the viewer, and is rotatable about a first axis that is immovable with respect to the housing. The first axis is located at one end, and the holding part A first connecting portion having the other end connected to the first connecting portion and an axis extending along a left-right direction as viewed from the viewer and rotatable about a second axis that is immovable with respect to the housing; The second axis is one And a second connecting portion having the other end connected to the holding portion, wherein the first connecting portion is a driving node that is driven by a driving force, and the second connecting portion is The combiner protrudes from the housing by a four-joint link mechanism that is a follower joint, the holding section is an intermediate joint, and a joint that connects the center of the first shaft and the center of the second shaft is a fixed joint. It can be moved from the protruded state to the housed state housed in the housing, and does not move relative to the housing and at least one of the first connecting portion, the second connecting portion, and the holding portion. And an elastic member that pulls the connected object with a restoring force, and the drive force causes the combiner to transition from the stowed state to the protruding state, and the restoring force causes the combiner to move into the protruding state. From the yield Wherein the transitioning to the state.

  In order to achieve the above object, a head-up display device according to a second aspect of the present invention includes the combiner storage device, a display that emits the display light, the combiner, and the housing. It is characterized by that.

  ADVANTAGE OF THE INVENTION According to this invention, the storage apparatus and head-up display apparatus of a combiner which do not put a burden on components at the time of storage of a combiner can be provided, suppressing the play at the time of a combiner movement, and the play by vibration.

It is a perspective view of the HUD device concerning one embodiment of the present invention. It is a schematic perspective view of the combiner storage apparatus with which a HUD apparatus is provided. It is the AA line schematic sectional drawing of the combiner storage apparatus shown in FIG. 2, and the side view seen from the -X-axis direction side, (a) is the figure which showed the protrusion state of the combiner, (b) It is the figure which showed the accommodation state of the combiner. It is a schematic diagram for demonstrating the 4-joint link mechanism which a combiner accommodating apparatus has. It is a disassembled perspective view of an electric motor. (A) And (b) is a figure for demonstrating operation | movement of a combiner storage apparatus. (A) is the figure which showed the storage state of the combiner, (b) is the figure which showed the state in the middle of changing to a protrusion state from a storage state. (A) And (b) is a figure for demonstrating operation | movement of a combiner accommodating apparatus, and is the figure which showed the protrusion state of the combiner. (A) And (b) is a figure for demonstrating operation | movement of a cover part, (a) is the figure which showed the closed state of the cover, (b) is the figure which showed the open state of the cover. It is.

  An embodiment of a head-up display device (hereinafter referred to as a HUD device) of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 3, the HUD device 1 includes a housing 10, a display device 20, a circuit board 30, a combiner 40, and a drive mechanism 50. For example, the HUD device 1 is disposed on a dashboard of a vehicle and notifies the driver of vehicle information such as a vehicle speed and a travel distance.
Moreover, the combiner storage apparatus 2 is comprised by the combiner 40 and the drive mechanism 50, as shown in FIG.

  In the following description, in order to make the configuration of the HUD device 1 easier to understand, the axis along the left-right direction as viewed from the viewer E (see FIG. 1) viewing the display image displayed by the HUD device 1 is the X axis. Each part of the HUD device will be described as appropriate, assuming that the axis along the vertical direction is the Y axis, and the axis orthogonal to the X axis and the Y axis is the Z axis. In addition, the direction in which the arrows indicating the directions of the X, Y, and Z axes are directed is the + (plus) direction, and the opposite direction is the-(minus) direction.

  The housing 10 includes an upper case 11 and a lower case 12, and the upper case 11 and the lower case 12 are connected to each other to form a box shape. The mechanism 50 is accommodated (note that the combiner 40 is accommodated in the accommodated state described later).

  The upper case 11 is formed with an opened emission port 11a through which the display light L from the display device 20 is emitted to the outside, and an opening 11b that is necessary when the combiner 40 is in a protruding state described later. The opening 11b is located in front of the emission port 11a (on the −Z axis direction side). As shown in FIG. 1, the combiner 40 in the protruding state is shaped to protrude upward from the opening 11b. A circuit board 30 and a drive mechanism housing 52 described later of the drive mechanism 50 are fixed to the lower case 12 by a predetermined method.

  The housing 10 is configured to prevent foreign matter from entering from the outside to the inside as much as possible, and to prevent stray light (for example, unnecessary light from the display light L described later) from leaking from the inside to the outside. ing.

  The display device 20 emits display light L (see a one-dot chain line arrow in FIG. 1) representing a display image for notifying vehicle information such as a vehicle speed and a travel distance. For example, a liquid crystal panel and a light source for backlight It is comprised from the transmissive liquid crystal display comprised from these, or a self-light-emitting display. The display 20 is fixed at a predetermined position in the housing 10 (for example, fixed to the upper case 11), so that the emission side of the display light L is the combiner 40 as shown in FIGS. It arrange | positions so that the concave surface 40a mentioned later may be opposed. In addition, in FIG. 3, components other than the combiner storage apparatus 2 are represented with the broken line.

  The circuit board 30 is formed from a microcomputer, a graphic display controller (GDC), or the like including a CPU (Central Processing Unit) and a storage unit such as a ROM (Read Only Memory) on a plate-like base material made of a resin containing glass fiber. It is the printed circuit board which mounted the control part (not shown) comprised. For example, the circuit board 30 is disposed below the display device 20 as shown in FIG. For example, the circuit board 30 and the display 20 are conductively connected via an FPC (Flexible Printed Circuit) (not shown). The control unit acquires vehicle state information transmitted through a communication line from an external device (not shown) such as a vehicle ECU (Electronic Control Unit), and drives the display device 20 in response thereto (that is, the display device). 20 to display a predetermined display image). When the display device 20 emits the display light L under the control of the control unit, the emitted display light L passes through the emission port 11a and travels toward the combiner 40.

  The combiner 40 includes a plate-shaped half mirror having a curved surface, a hologram element, and the like. The combiner 40 is in a state in which the viewer E can view the display image by the display light L by the drive mechanism 50 (hereinafter referred to as a “protruding state”) (see below “ It is moved to “storage state”). As shown in FIGS. 1 and 3, the combiner 40 in the protruding state looks like protruding upward from the housing 10 (upper case 11). The combiner 40 in the protruding state receives the display light L emitted from the display device 20 at its concave surface 40a (generally facing the + Z-axis direction), and changes the optical path of the incident display light L (a half mirror as the combiner 40). Is used, the optical path of the display light L is changed by reflection, and when the hologram element is used, the optical path of the display light L is changed by diffraction). The concave surface 40a of the combiner 40 has a function of condensing the display light L and is a curved surface that can form a virtual image farther forward (for example, about 1 m ahead of the combiner 40) than when the light is simply reflected. It is configured. The combiner 40 forms a virtual image of the display image at the front position F and transmits light from the front, so that the HUD device 1 allows the viewer to view both the virtual image and the outside scene actually present in front. E can be visually recognized.

  The drive mechanism 50 is a mechanism for moving the combiner 40 between the “protruding state” and the “storing state”. As shown in FIGS. 2 and 3 and the like, the holder 51, the driving mechanism housing 52, 1 connection part 53, the 2nd connection part 54, the slider 55, the 1st elastic member 56, and the electric motor 57 are provided. The drive mechanism 50 also has a function of adjusting the angle of the combiner 40 when the combiner 40 is in the protruding state.

  The holder 51 holds the combiner 40, and is formed of, for example, a resin material. As shown in FIG. 2, the holder 51 is a columnar member extending substantially in the X-axis direction. One end of the combiner 40 (lower end in the protruding state) is fixed to the holder 51 (for example, a screw (not shown)). Etc., the combiner 40 is attached to the holder 51). Further, the holder 51 moves with respect to the casing 10 (or the driving mechanism casing 52). How to move will be described later.

As shown in FIG. 2, the drive mechanism housing 52 is a substantially concave base member as viewed from the + Z-axis direction, and is formed of a predetermined resin material. The drive mechanism housing 52 is fixed to the lower case 12 and is immovable with respect to the housing 10.
Specifically, the drive mechanism housing 52 includes an upper bottom portion 520 positioned at a predetermined interval from the bottom of the lower case 12 and a wall portion 521 that stands upward from each of the left and right end portions of the upper bottom portion 520. And an attachment portion 522 formed generally downward from the upper end portion of the wall portion 521 so as to cover a four-joint link mechanism described later. The drive mechanism housing 52 is fixed to the lower case 12 by the attachment portion 522 being attached to the lower case 12 by a predetermined method.

The first connection portion 53 is a rod-shaped member made of a resin material, and one end portion thereof is held by the drive mechanism housing 52 and the other end portion is connected (connected) to the holder 51.
Specifically, the first connection portion 53 penetrates one end portion thereof, and is part of the drive mechanism casing 52 (wall portion) so as to be rotatable about a first fixed axis P that is an axis parallel to the X axis. 521 is held by an inner side surface portion 521a) having a surface facing in the −X-axis direction. As a result, the first connecting portion 53 rotates about the YZ plane about the first fixed axis P that does not move with respect to the casing 10 (or the driving mechanism casing 52). Further, the first connection portion 53 penetrates the other end portion, and supports the holder 51 rotatably around a first support shaft Q that is an axis parallel to the X axis.

For example, a convex portion along the first fixed axis P is formed on the inner side surface portion 521a of the drive mechanism housing 52, and a concave portion corresponding to the convex portion is formed at one end portion of the first connection portion 53. As a result of the connection, the first connecting portion 53 is rotatable about the first fixed axis P. Of course, the uneven relationship may be reversed.
That is, it can be said that the first connection portion 53 is connected to the drive mechanism housing 52 by a joint (joint) centered on the first fixed axis P. This joint has one degree of freedom. In addition to the first fixed axis P, the axes Q, R, and S that are the centers of the joints of the four-joint link mechanism to be described later are similarly configured as joints that connect the respective members. The joints have one degree of freedom. Further, the axes T and U located at both ends of the first elastic member 56 are similarly configured with joints around these axes. Therefore, the description about a joint is abbreviate | omitted below. 3, 4, 6, and 7, the axes P, S, and T that do not move with respect to the casing 10 (or the driving mechanism casing 52) are represented by black circles, and the axis Q that moves with respect to the casing 10. , R and U are represented by white circles.

In addition, the lower portion of the first connection portion 53 in the protruding state controls the rotation angle of the first connection portion 53 around the first fixed axis P, and has a cam portion C1 having a curved surface with a gradually changing curvature. It has become. This cam portion C1 and a contact portion C2 of the slider 55 described later constitute a cam mechanism.
Specifically, of the curved surface shape of the cam portion C1, the convex curved surface formed in the portion close to the first fixed axis P has a large ratio of the rotation angle of the first connection portion 53 per moving distance of the slider 55. And is mainly formed as a curved surface for making a transition from the housed state to the protruding state (and vice versa). On the other hand, of the curved surface shape of the cam portion C1, the concave curved surface (formed at a position farther from the center of the first fixed axis P than the convex curved surface) located next to the convex curved surface is the moving distance of the slider 55. The rotation of the first connecting portion 53 is slightly reversed, and the angle of the combiner 40 in the protruding state (for example, the angle formed by the optical axis of the combiner 40 and the Z axis) is finely adjusted. It is formed as a curved surface.

  In the present embodiment, the cam mechanism composed of the cam portion C1 and the contact portion C2 formed as described above, the operation of storing / projecting the combiner 40 based on one operation of the movement of the slider 55, and the projection The fine adjustment operation of the combiner 40 in the state is realized. In the HUD device disclosed in Patent Document 1, the mechanism for moving the combiner and the mechanism for adjusting the angle of the combiner in the protruding state are configured by separate mechanisms, and the structure is complicated, so the frequency of use is high. Otherwise, there was a risk of failure. However, since the HUD device 1 according to the present embodiment realizes the state transition control and fine angle adjustment control of the combiner 40 by the cam mechanism, the structure is simple and the risk of failure can be reduced. In addition, the increase in the number of parts can be suppressed, and the product cost can be suppressed.

The second connection portion 54 is a rod-shaped member made of a resin material located below (-Y-axis direction side) the first connection portion 53 in the protruding state of the combiner 40, and one end portion of the second connection portion 54 is a drive mechanism housing. It is held by the body 52 and the other end is connected to the holder 51.
Specifically, the second connection portion 54 penetrates one end portion thereof, and is part of the drive mechanism housing 52 (wall portion) so as to be rotatable about a second fixed axis S that is an axis parallel to the X axis. 521 is held by an inner side surface portion 521a) having a surface facing in the −X-axis direction. As a result, the second connecting portion 54 rotates about the YZ plane about the second fixed axis S that does not move with respect to the casing 10 (or the driving mechanism casing 52). The second connection portion 54 penetrates the other end portion and supports the holder 51 rotatably around a second support axis R that is an axis parallel to the X axis.

As shown in FIG. 4, the combiner storage device 2 allows the combiner 40 to move from the protruding state to the stored state by a four-bar linkage mechanism. The four-joint link mechanism is connected to one of the fixed joint (fixed link) and the joint (joint) located at both ends of the fixed joint, and the drive joint (drive link) to which the driving force is applied and the other joint of the fixed joint It is known as a mechanism composed of a driven node (driven link) that is connected and opposed to the driving node, and an intermediate node (intermediate link) that connects the driving node and the driven node.
Correspondingly, the four-bar linkage mechanism included in the combiner storage device 2 according to the present embodiment is a part of the drive mechanism casing 52 (specifically, the center of the first fixed shaft P and the second fixed shaft P). The node connecting the center of the fixed axis S) functions as a fixed node, the first connecting portion 53 functions as a driving node, the second connecting portion 54 functions as a driven node, and the holder 51 functions as an intermediate node ( (See FIGS. 3 and 4). Note that the centers of the axes P, Q, R, and S are the centers of joints between adjacent nodes constituting the four-node link mechanism.
In the four-joint link mechanism configured as described above, a driving force is applied to the first connecting portion 53 by the slider 55, and the combiner 40 is changed from the housed state to the protruding state by this driving force, thereby restoring the first elastic member 56. The combiner 40 is changed from the protruding state to the stored state by force. Specific operations will be described in detail later.

  In the description so far, the four-bar linkage mechanism has been described with reference to the left side surface (−X-axis direction side) of the combiner storage device 2, but the combiner storage device 2 (or HUD device 1) is generally symmetrical. Similarly, a right connection side has a first connection portion, a second connection portion, and the like, and a four-bar linkage mechanism is formed. That is, the combiner storage device 2 moves the combiner 40 from the protruding state to the stored state by a four-bar linkage mechanism that operates in the same manner on both the left and right sides of the combiner 40. Therefore, details of the four-bar linkage mechanism on the right side are omitted.

The slider 55 moves in the front-rear direction (generally along the Z-axis direction) by the power of the electric motor 57. By the movement of the slider 55, a first driving force F <b> 1 (see FIG. 3) that is a force for causing the combiner 40 to protrude out of the housing 10 is applied to the first connecting portion 53.
The slider 55 includes a plate-like main body portion 550 that moves in the front-rear direction on the upper bottom portion 520 of the drive mechanism housing 52, a sliding portion 551 that protrudes outward from each of the left and right side portions of the main body portion 550, The contact portion C <b> 2 is located outside the sliding portion 551 and contacts the first connection portion 53.

  The sliding portion 551 is, for example, a cylindrical member whose height direction is the X-axis direction, and is made of a sliding resin such as an oil-containing polyacetal (POM) resin. The sliding portion 551 slides inside the guide portion 521b provided on the wall portion 521 of the drive mechanism housing 52 (only the right sliding portion 551 and the guide portion 521b are shown in FIG. Both are provided in the same way). The guide portion 521b includes, for example, a hole formed in the wall portion 521 extending in the front-rear direction (a through-hole penetrating the wall portion 521 in the X-axis direction), and the sliding portion 551 is slid inside the hole. (The side surface of the cylindrical sliding portion 551 slides on the guide portion 521b). Thereby, the guide part 521b guides the slider 55 to the front-back direction.

The contact portion C2 is a disk-like member having a diameter that is slightly larger than the diameter of the cylindrical slide portion 551, and is formed integrally with the slide portion 551 (that is, POM resin or the like). Formed by). In addition to sliding the sliding portion 551 and the contact portion C2, it may be rotatable around the X axis.
The contact portion C2 is located outside the guide portion 521b, that is, outside the inner side surface portion 521a of the wall portion 521. The contact portion C <b> 2 is in contact with the first connection portion 53, and gives a force for rotating around the first fixed axis P to the first connection portion 53 as the slider 55 moves. Specifically, when the slider 55 moves forward (moves in the −Z-axis direction), the contact portion C2 rotates the first connecting portion 53 clockwise (CW: Clock Wise). When the first connecting portion 53 rotates clockwise, the four-bar linkage mechanism moves the combiner 40 in a direction that protrudes to the outside of the housing 10 (moves in a direction that transitions to the protruding state).
On the other hand, when the slider 55 moves backward (moves in the + Z-axis direction), the four-link mechanism is operated by the elastic force of the first elastic member 56. As a result, the first connecting portion 53 (the second connecting portion 54 is the same). ), Counterclockwise (CCW: Counter Clock Wise). When rotating in the CCW in this way, the four-bar linkage mechanism moves the combiner 40 in a direction in which the combiner 40 is housed in the housing 10 (moves in a direction in which the combiner 40 transitions to the housed state).

  The first elastic member 56 gives the four-joint link mechanism a force for shifting the combiner 40 from the protruding state to the retracted state by the first restoring force F2 (see FIG. 3). For example, a metallic spring Consists of. The first elastic member 56 connects the second connection portion 54 and a portion that does not move with respect to the housing 10 (for example, the inner side surface portion 521a of the drive mechanism housing 52), and the connected object (that is, The second connecting portion 54) is pulled by the first restoring force F2.

Specifically, the first elastic member 56 passes through one end of the first elastic member 56 so as to be rotatable around a first connecting axis T that is an axis parallel to the X axis, and passes through the other end and is an axis parallel to the X axis. The second connecting shaft U is held so as to be rotatable. The first connection axis T is an axis that does not move with respect to the casing 10, and the second connection axis U is an axis that does not move with respect to the second connection portion 54 (that is, moves with respect to the casing 10). Axis). And the 1st elastic member 56 will go to the center of the 1st connection axis T from the center of the 2nd connection axis U, if the center of the 1st connection axis T is made into the standard by the 1st restoring force F2. The second connection portion 54 is pulled in the direction.
In particular, the end portion of the first elastic member 56 where the second connecting shaft U is located rotates the second connecting portion 54 in the CCW direction with the first restoring force F2 around the second fixed shaft S. It is connected to the part that can. Specifically, the second connecting portion 54 is formed with a protruding portion 540 that protrudes upward from the center of the second fixed axis S in the protruding state of the combiner 40, and the protruding portion 540 has a first elastic property. The end of the member 56 where the second connecting shaft U is located is connected. Thus, the 1st restoring force F2 of the 1st elastic member 56 gives the force for making the combiner 40 into a stowed state to the 4-joint link mechanism which concerns on this embodiment.

  As shown in FIG. 2, the second connecting portion 54 does not rotate abruptly in the vicinity of the end of the first elastic member 56 on the second connecting shaft U side (that is, a four-bar linkage mechanism). Is provided with a rotary damper 60 (not shown in drawings other than FIG. 2). Further, the mounting portion 522 of the drive mechanism casing 52 is provided with a notch 522a for reducing the weight of the device and facilitating assembly of a four-bar linkage mechanism or the like.

  The electric motor 57 is an actuator that gives power to the slider 55 to move in the front-rear direction, and is attached to the lower surface side (−Y-axis direction side) of the upper bottom portion 520 of the drive mechanism housing 52. The electric motor 57 is electrically connected to the circuit board 30 by an FPC or the like (not shown), and rotates the first gear G1 under the control of the control unit. For example, the drive shaft of the electric motor 57 is oriented in the + X-axis direction and rotates around the X-axis.

  As shown in FIG. 5, the electric motor 57 includes a motor 570, a first gear 571, a second gear 572, a vibration isolation member 573 disposed between the first gear 571 and the second gear 572, An electric motor housing 574 having a drive shaft 574a and a mounting portion 574b. The first gear 571, the second gear 572, and the vibration isolating member 573 are stacked in the Y-axis direction around the drive shaft 574a, and the notch portion and the protruding portion provided in each are fastened, so that one A helical gear (first gear G1) is formed. Thus, when the motor 570 is driven by interposing the vibration isolating member 573 made of an elastic member between the first gear 571 fastened to the motor 570 and the second gear 572 fastened to the second gear G2. The vibration from the motor 570 can prevent abnormal noise from occurring between the first gear G1 and the second gear G2, and the vibration from the second gear G2 is not easily transmitted to the motor 570. Therefore, an impact such as vibration on the motor 570 can be suppressed. Further, when the electric motor 57 is attached to the lower surface side of the upper bottom portion 520 of the drive mechanism housing 52, an attachment portion 574b having a screw hole made of a buffer member is provided, so that the electric motor 57 and the drive mechanism housing 52 are provided with each other. The transmission of vibration and abnormal noise caused by the vibration can be suppressed. Further, on the left side of the first gear G1 in FIG. 2, there is disposed a second gear G2 (generally oriented in the Y-axis direction) that is fastened to the first gear G1. The slider 55 has a gear (not shown) that is fastened to the second gear G2 on the back surface side of the main body 550, and moves in the front-rear direction when the second gear G2 rotates. In FIG. 2, a plurality of teeth of the first gear G1 and the second gear G2 are omitted.

With such a mechanism, the rotational power of the motor 570 is transmitted to the slider 55 via the first gear G1, the second gear G2, and the like, and the slider 55 moves in the front-rear direction.
A predetermined portion of the moving mechanism housing 52 is provided with position detecting means (not shown) so that it can detect whether the combiner 40 is in the protruding state or in the retracted state. It has become. The position detection means includes a linear potentiometer that detects the position of the slider 55 in the front-rear direction, the rotation angle of the first connection portion 53 around the first fixed axis P, and the second connection portion 54 around the second fixed axis S. For example, when the slider 55 is connected to the circuit board 30 and the slider 55 is positioned at a predetermined position, a detection signal indicating the information is supplied to the control unit. Based on this detection signal, the control unit determines whether the combiner 40 is in the protruding state or in the retracted state.

  Next, how the combiner storage device 2 (or the HUD device 1) moves the combiner 40 will be described with reference to FIGS. Hereinafter, how the combiner 40 transitions from the storage state to the protruding state will be mainly described.

  For example, a predetermined device mounted on a dashboard of a vehicle is provided with an operation unit having a button marked “ON / OFF” or the like, and a user (usually a viewer E) presses this button. When pressed, an operation signal indicating that a user operation has been performed is supplied to the control unit. A control part acquires the operation signal, and when the combiner 40 is in the accommodation state now, it performs control for making it change to a protrusion state. Specifically, the control unit supplies a control signal for starting the operation to the electric motor 57. In response to this, the electric motor 57 rotates the drive shaft at a constant speed. Then, the rotational power of the electric motor 57 is converted into power for moving the slider 55 forward through the first gear G1, the second gear G2, and the like, and the slider 55 moves forward. In this way, the HUD device 1 transitions from the housed state shown in FIG. 6A to the state shown in FIG. 6B.

When the slider 55 moves in the forward direction, the contact portion C2 moves on the convex curved surface of the cam portion C1 of the first connection portion 53 so as to move away from the center of the first fixed axis P (sliding and / or rotational movement). ). If it moves in this way, the 1st connection part 53 will rotate centering on the 1st fixed axis P, and the 2nd connection part 54 will rotate centering on the 2nd fixed axis S (refer FIG.6 (b)). . At this time, the first elastic member 56 extends from the contracted state.
The first support shaft Q and the second support shaft R that support the holder 51 are adjusted so that they can pass through the opening 11b of the upper case 11 when the combiner 40 moves. Further, a lid 60 (described later) that closes the opening 11b is provided in the storage state, and the lid 60 opens following the four-bar linkage mechanism of the combiner storage device 2 when the combiner 40 transitions to the protruding state. Do it. In this way, it is possible to reduce the risk of failure without foreign matter such as dust entering the housing 10 in the housed state.

  When the contact portion C2 is positioned at a predetermined portion on the convex curved surface of the cam portion C1 (for example, the top portion of the convex curved surface), the position detecting means outputs a detection signal indicating that the combiner 40 has transitioned to the protruding state. To supply. The control unit that has acquired the detection signal stops the operation of the electric motor 57. Thereby, the HUD apparatus 1 will be in the protrusion state shown to Fig.7 (a).

The case where the angle of the combiner 40 is finely adjusted in the protruding state shown in FIG. For example, in addition to the button marked “ON / OFF” as the operation part, a button marked “angle adjustment” is provided, and when this button is kept pressed, the button on the concave curved surface of the cam part C1 is provided. The contact part C2 repeats moving back and forth.
Specifically, the control unit continues to drive the electric motor 57 while the “angle adjustment” button is kept pressed. For example, when the contact portion C2 is positioned in the state shown in FIG. 7B, the position detection unit supplies a detection signal indicating the position to the control unit, and the control unit corresponding thereto detects the electric motor 57. The drive shaft is rotated in the direction opposite to the rotation of the drive shaft at the time of transition from 7 (a) to the state of FIG. 7 (b). Then, the contact portion C2 moves backward, and when the contact portion C2 is positioned again in the state shown in FIG. 7A, the position detecting means supplies a detection signal indicating this position to the control portion, The corresponding control unit restores the rotation of the drive shaft of the electric motor 57. For example, by continuing such control while the button is pressed, the user can adjust the angle of the combiner 40 appropriately by releasing the finger when the combiner 40 reaches a desired angle. Can do.

  When the HUD device 1 changes from the state shown in FIG. 7A to the state shown in FIG. 7B, even if the contact portion C2 moves forward (the slider 55 moves forward). ), Due to the concave curved surface of the cam portion C2, the first connection portion 53 is slightly rotated in the CCW direction around the first fixed axis P, while the second connection portion 54 is rotated by the first restoring force F2. The second connecting portion 54 is rotated in the CCW direction around the second fixed axis S, whereby the second connecting portion 54 is pulled back (in the + Z-axis direction), and the combiner 40 is counterclockwise. Tilt around. In this way, the angle of the combiner 40 in the protruding state can be finely adjusted.

  Note that when the combiner 40 transitions from the protruding state to the storage state, the HUD device 1 (or the combiner storage device 2) performs an operation reverse to the above description. Below, the cover part 60 is demonstrated using FIG. FIG. 8A is a view showing the “closed state” of the lid portion 60, and FIG. 8B is a view showing the “open state” of the lid portion 60.

  As shown in FIG. 8A, the lid 60 includes a lid 61, a third connecting portion 62 that forms a lid opening / closing mechanism for causing the lid 61 to transition between “open state” and “closed state”, It is comprised from the 4 connection part 63, the 2nd elastic member 64, the auxiliary body 65, and the pushing-down part 66. FIG.

  The lid 61 closes the opening 11b and is formed of, for example, a resin material. The lid 61 has a plate-like shape extending substantially in the XZ plane in the closed state, and is held by a third connection portion 62 and a fourth connection portion 63 described later, so that the third connection portion 62 and the fourth connection portion 63 can be rotated. Based on this, the casing 10 (or the driving mechanism casing 52) moves.

The third connection part 62 is a rod-shaped member made of a resin material, one end of which is held by the drive mechanism casing 52 and the other end is connected (connected) to the lid 61.
Specifically, the third connecting portion 62 penetrates one end portion thereof, and is part of the drive mechanism casing 52 (wall portion) so as to be rotatable about a third fixed axis HP that is an axis parallel to the X axis. 521 is held by an inner side surface portion 521a) having a surface facing in the −X-axis direction. As a result, the third connecting portion 62 rotates about the YZ plane about the third fixed axis HP that does not move with respect to the casing 10 (or the driving mechanism casing 52). Further, the third connecting portion 62 penetrates the other end portion, and supports the holder 51 rotatably around a third support shaft HQ that is an axis parallel to the X axis. In addition, the third connection portion 62 forms a recess 62a where a protrusion 66a of the push-down portion 66 described later is caught at a position facing the push-down portion 66 in the vicinity of the third fixed shaft HP. The third connecting portion 62 rotates in the CW direction around the third fixed shaft HP by the depression 62a being pushed down by the second driving force F3 from the protruding portion 66a of the pushing-down portion 66 (the lid 61 is closed). Transition to a state). Further, in the state shown in FIG. 8A, the third connecting portion 62 rotates in the CCW direction around the first fixed axis P, so that the protruding portion 66a is connected to the third connecting portion 62. The recess 62a is kicked up, and with this as a trigger, it rotates in the CCW direction around the third fixed shaft HP (the lid 61 is shifted to the open state).

  For example, a convex portion along the third fixed axis HP is formed on the inner side surface portion 521a of the drive mechanism housing 52, and a concave portion corresponding to the convex portion is formed at one end portion of the third connection portion 62. As a result of the connection, the third connecting portion 62 is rotatable about the third fixed shaft HP. Of course, the uneven relationship may be reversed. That is, it can be said that the third connecting portion 62 is connected to the drive mechanism housing 52 by a joint centered on the third fixed axis HP. This joint has one degree of freedom. In addition, for the shafts HQ, HR, and HS, which are the centers of the joints of the four-joint link mechanism, together with the third fixed shaft HP, similarly, joints that connect the respective members are configured, and each shaft is the center. The joint has one degree of freedom. Further, the third connection shafts HT and HU located at both ends of the second elastic member 64 are similarly configured with joints around these shafts. In FIG. 8, the fixed shafts HP, HS, HU, and HV that are immovable with respect to the housing 10 (or the drive mechanism housing 52) are represented by black circles, and the support shafts HQ and HR that move with respect to the housing 10. , HT and HW are represented by white circles.

The fourth connection portion 63 is a rod-shaped member made of a resin material that intersects with the third connection portion 62 in the open state and the closed state of the lid 61, and one end portion of the fourth connection portion 63 is held by the drive mechanism housing 52. The end is connected to the lid 61.
Specifically, the fourth connecting portion 63 penetrates through one end portion thereof, and is a portion that is immovable with respect to the housing 10 (for example, for example, rotatable about a fourth fixed axis HS that is an axis parallel to the X axis (for example, It is held by an inner side surface portion (not shown) having a surface facing the + X-axis direction of the mounting portion 522 constituting the drive mechanism housing 52. As a result, the fourth connecting portion 63 rotates on the YZ plane about the fourth fixed axis HS that does not move with respect to the casing 10 (or the driving mechanism casing 52). Further, the fourth connecting portion 63 penetrates the other end portion, and supports the lid 61 rotatably around a support shaft HR that is an axis parallel to the X axis.

  The second elastic member 64 uses a four-bar linkage mechanism, and applies a force for shifting the lid 61 from the open state to the closed state by the second restoring force F4 (see FIG. 8). It consists of a spring. The second elastic member 64 connects the fourth connecting portion 63 and the auxiliary body 65, and pulls the connected object (that is, the fourth connecting portion 63) by the second restoring force F4.

Specifically, the second elastic member 64 passes through one end of the second elastic member 64 so as to be rotatable around a third connection axis HT that is an axis parallel to the X axis, and passes through the other end and is an axis parallel to the X axis. Is held so as to be rotatable around the fourth connecting shaft HU. The third connection shaft HT is a shaft that does not move with respect to an auxiliary body 65 described later (that is, a shaft that moves with respect to the housing 10), and the fourth connection shaft HU is connected to the fourth connection portion 63. This is an axis that does not move (that is, an axis that moves relative to the housing 10). And the 2nd elastic member 64 goes to the center of the 3rd connecting axis HT from the center of the 4th connecting axis HU, if the 2nd restoring force F4 makes the standard the center of the 3rd connecting axis HT. The fourth connecting portion 63 is pulled in the direction.
In particular, the position where the fourth connecting shaft HU of the second elastic member 64 is located can rotate the fourth connecting portion 63 in the CCW direction by the second restoring force F4 around the fourth fixed shaft HS. It is connected with the parts that can.

The auxiliary body 65 is a bowl-shaped member made of a resin material. One end of the auxiliary body 65 is held by the drive mechanism housing 52, and the second guide portion 521 c provided on the wall portion 521 of the drive mechanism housing 52 is attached to the auxiliary body 65. The hook-shaped tip of the auxiliary body 65 is slidably connected to the second elastic member 64, and further connected to a third elastic member (not shown) at a predetermined position.
Specifically, the auxiliary body 65 penetrates one end of the auxiliary body 65 and is part of the drive mechanism housing 52 (of the wall portion 521) so as to be rotatable about a fifth fixed axis HV that is an axis parallel to the X axis. Of these, the inner side surface portion 521a) having a surface facing in the −X-axis direction is held. Further, the auxiliary body 65 penetrates the other end portion, and a sliding shaft HW that is an axis parallel to the X axis can slide on the second guide portion 521c provided on the wall portion 521 of the drive mechanism casing 52. Retained. Further, the auxiliary body 65 is connected to a third elastic member (not shown) on a predetermined axis parallel to the X axis, and is always restored by the third elastic member to rotate in the CW direction around the fifth fixed axis HV. Configured to apply force.
That is, the auxiliary body 65 is applied to the housing 10 (or the housing 52 for the driving mechanism) by the third driving force F5 of the contact portion C2 (not shown in FIG. 8A) near the sliding shaft HW. Rotating in the CCW direction approximately on the YZ plane around the fixed fifth fixed shaft HV, the sliding shaft HW slides in the −Z axis direction along the second guide portion 521c. As a result, the third connecting shaft HT rotates around the fifth fixed shaft HV, and the direction of the second restoring force F4 by the second elastic member 64 applied to the fourth connecting portion 63 is changed.
In addition, when the contact portion C2 moves in the + Z direction in the state of FIG. 8B (the lid 61 is in the open state), the auxiliary body 65 is fixed to the fifth fixed state by the restoring force of the third elastic member (not shown). It rotates in the CW direction around the axis HV, and the sliding axis HW slides in the + Z-axis direction along the second guide portion 521c. As a result, the third connecting shaft HT rotates around the fifth fixed shaft HV, and the direction of the second restoring force F4 by the second elastic member 64 applied to the fourth connecting portion 63 is changed.

  The push-down portion 66 is made of a resin material, and rotates around the first fixed shaft P in conjunction with the rotation of the first connection portion 53 described above, and has a protruding protrusion 66a. When the first connecting portion 53 rotates in the CCW direction, the protruding portion 66a engages with the concave portion 62a of the third connecting portion 62, and the third connecting portion 63 is centered on the third fixed shaft HP in the CW direction. The lid 61 can be closed by this rotation. Further, in the state of FIG. 8A (the lid 61 is closed), the first connecting portion 53 rotates in the CW direction, whereby the protruding portion 66a kicks up the concave portion 62a of the third connecting portion 62. As a result, the third connecting portion 62 rotates in the CCW direction around the third fixed shaft HP (the lid 61 is shifted to the open state).

As shown in FIG. 8, the lid 60 enables the lid 61 to move from the open state to the closed state by a four-bar linkage mechanism. The four-joint link mechanism included in the lid portion 60 according to the present embodiment includes a part of the drive mechanism housing 52 (specifically, the center of the third fixed shaft HP and the center of the fourth fixed shaft HS). The connecting node) functions as a fixed node, the fourth connecting portion 63 functions as a driving node, the third connecting portion 62 functions as a driven node, and the lid 61 functions as an intermediate node (see FIGS. 4 and 8). .
In the four-bar linkage mechanism of the lid portion 60 configured as described above, the push-down portion 66 is rotated based on the protruding and storing operation of the combiner 40 of the combiner storage device 2, and the push-down portion 66 is rotated so that the lid The third connecting part 62 of the four-bar linkage mechanism of the part 60 rotates, whereby the lid 61 changes between the open state and the closed state.
In the state of FIG. 8A, when the combiner storage device 2 puts the combiner 40 into a protruding state, the push-down portion 66 rotates in the CW direction about the first fixed shaft P, thereby the third connecting portion. The concave portion 62a of 62 is kicked up by the protruding portion 66a of the push-down portion 66, and the fourth connection portion 63 is centered on the fourth fixed shaft HS by the second restoring force F4 of the second elastic member 64. To the CCW direction (the lid 61 is in the open state).
8B, when the combiner storage device 2 places the combiner 40 in the storage state, the push-down portion 66 rotates in the CCW direction about the first fixed shaft P, and the third portion is based on this. The recessed portion 62a of the connecting portion 62 is pushed down by the protruding portion 66a of the pushing-down portion 66, and the third connecting portion 62 is centered around the third fixed shaft HP by the second driving force F3 from the pushing-down portion 66. (The lid 61 is closed).

  In the description so far, the four-bar linkage mechanism of the lid portion 60 has been described with reference to the left side surface (−X axis direction side). However, the combiner storage device 2 (or HUD device 1) is configured substantially symmetrically. Similarly, there are a third connection portion, a fourth connection portion, and the like on the right side surface side, and a four-bar linkage mechanism is configured. That is, the lid 60 moves the lid 61 from the open state to the closed state by a four-bar linkage mechanism that operates in the same manner on both the left and right sides of the lid 61. Therefore, details of the four-bar linkage mechanism of the lid portion 60 on the right side are omitted.

The combiner storage apparatus 2 having the above configuration condenses the display light L by the combiner 40 having the concave surface 40a to which the display light L representing the display image arrives, and causes the viewer E to visually recognize the display image from the concave surface 40a side. The combiner storage device 2 that can store the combiner 40 in the housing 10 of the head-up display device 1, which is movable with respect to the housing 10 and holds the combiner 40 (an example of a holding unit) ) And an axis extending in the left-right direction as viewed from the viewer E, and is rotatable about a first fixed axis P that is immovable with respect to the housing 10, and the first fixed axis P is at one end. A first connecting portion 53 whose other end is connected to the holder 51 and a second fixed shaft that extends along the left-right direction when viewed from the viewer E and is stationary with respect to the housing 10 Rotate around S The second fixed shaft S is located at one end, and the second connecting portion 54 is connected to the holder 51 at the other end, and the first driving force F1 is applied to the first connecting portion 53. 4 nodes with the second connecting portion 54 as a driven node, the holder 51 as an intermediate node, and a node connecting the first fixed axis P and the second fixed axis S as fixed nodes. The link mechanism can move the combiner 40 from the protruding state protruding from the housing 10 to the storage state stored in the housing 10, and the second connecting portion 54 (the first connecting portion 53 and the second connecting portion). The second portion 54 and the holder 51 are connected to a portion immobile with respect to the housing 10 and the second connecting portion 54 (the connected target) is pulled by the first restoring force F2. One elastic member 56 is provided, and one of the driving force and the restoring force To transition to the accommodated state of the combiner from the protruding state by the force shifts to the projecting state the combiner from the accommodated state by the other force.
According to this, even when vibration is applied to the combiner storage device 2, the vibration can always be satisfactorily absorbed by the elastic force of the first elastic member 56, and unnecessary stress applied to the drive mechanism 50 can be suppressed as much as possible. Therefore, the drive mechanism 50 of the combiner 40 is not easily damaged. In addition, since the connecting portion to which the driving force is applied is different from the connecting portion to which the restoring force is applied, the first driving force F1 or the connecting portion (the first connecting portion 53 and the second connecting portion 54) is always applied to both the connecting portions. Since the first restoring force F2 is applied, vibrations can always be satisfactorily absorbed and unnecessary stress applied to the drive mechanism 50 can be suppressed as much as possible, so that the drive mechanism 50 of the combiner 40 is not easily damaged. Moreover, in the storage state of the combiner 40, since the 1st elastic member 56 will not be in the extended state, the burden concerning the 1st elastic member 56 itself and the member engaged with it can be reduced.

  The combiner storage device 2 further includes a contact portion C2 (or a slider 55; an example of a moving body) that contacts the first connection portion 53 and moves in the front-rear direction when viewed from the viewer E, and the contact portion C2 is rearward. The first driving force F <b> 1 is applied to the first connecting portion 53 by moving to the first connecting portion 53.

Further, in the combiner storage device 2, the first connection portion 53 and the contact portion C <b> 2 constitute a cam mechanism, and the portion (cam portion C <b> 1) that contacts the contact portion C <b> 2 of the first connection portion 53 is the first connection portion 53. The first curved surface has a curved surface with a gradually changing curvature that controls a rotation angle about the first fixed axis P.
As described above, in the combiner storage device 2, since the state transition control and fine angle adjustment control of the combiner 40 are realized by the cam mechanism, the structure is simple and the risk of failure can be reduced. In addition, the increase in the number of parts can be suppressed, and the product cost can be suppressed.

  Further, in the electric motor 57, the motor 570 is driven by interposing an anti-vibration member 573 made of an elastic member between the first gear 571 fastened to the motor 570 and the second gear 572 fastened to the second gear G2. The vibration from the motor 570 can prevent the generation of abnormal noise between the first gear G1 and the second gear G2, and the vibration from the second gear G2 Since it becomes difficult to transmit, impact such as vibration to the motor 570 can be suppressed, and the risk of failure of the electric motor 57 can be reduced.

  The HUD device 1 includes a combiner storage device 2, a display 20 that emits display light L, a combiner 40, and a housing 10.

(Modification)
In addition, this invention is not limited by the said embodiment and drawing. It goes without saying that changes (including deletion of components) can be added to the embodiment and the drawings.

  In the above description, although the example of arrangement | positioning with which the indicator 20 and the combiner 40 oppose was shown, it is not restricted to this. For example, the display device 20 may be arranged so as to emit the display light L in the + Z-axis direction side, and the display light L may reach the combiner 40 by folding the optical path with a predetermined reflecting member.

  In the above description, the example in which the first elastic member 56 pulls the second connecting portion 54 has been shown. Instead, an elastic member that pulls the first connecting portion 53 is provided, or an elastic member that pulls the holder 51 obliquely upward is provided. It is also possible to provide it.

  In the above description, an example in which a motor having a constant rotation speed of the drive shaft is used as the electric motor 57 is not limited to this. The electric motor 57 may be a servo motor or a stepping motor. By controlling the rotation angle of the drive shaft with these motors, the moving speed of the slider 55 can be adjusted and the angle of the combiner 40 can be finely adjusted without using a cam mechanism. However, if it is desired to simplify the control, it is better to use a cam mechanism.

  In the above description, an example of a vehicle on which the HUD device 1 (or the combiner storage device 2) is installed is a vehicle, but is not limited thereto. The HUD device 1 can also be installed near the driver's seat of other vehicles such as ships and aircraft. Furthermore, the present invention is not limited to the one installed near the driver's seat of the vehicle, but can be applied to a desktop interior installed indoors.

  In the above description, in order to facilitate the understanding of the present invention, the description of known unimportant technical matters is appropriately omitted.

DESCRIPTION OF SYMBOLS 1 HUD apparatus 2 Combiner storage apparatus 10 Case 20 Display 30 Circuit board 40 Combiner 50 Drive mechanism 51 Holder 52 Drive mechanism housing 53 1st connection part C1 Cam part P 1st fixed shaft Q 1st support shaft 54 Second connection portion S Second fixed shaft R Second support shaft 55 Slider C2 Contact portion 56 Elastic member T First connection shaft U Second connection shaft 57 Electric motor 60 Lid

Claims (4)

The combiner can be housed in a housing of a head-up display device that condenses the display light by a combiner having a concave surface to which display light representing a display image arrives and allows a viewer to visually recognize the display image from the concave surface side. A combiner storage device,
A holding unit that is movable relative to the housing and holds the combiner;
It is an axis extending in the left-right direction as viewed from the viewer, and is rotatable about a first axis that is immovable with respect to the housing. The first axis is located at one end, and the holding A first connecting portion having the other end connected to the portion;
An axis extending in the left-right direction as viewed from the viewer and rotatable about a second axis that does not move with respect to the housing, and the second axis is located at one end, and the holding A second connection part having the other end connected to the part,
The first connection portion is a drive node that is driven when a driving force is applied, the second connection portion is a driven node, the holding portion is an intermediate node, and the center of the first axis and the second axis By a four-joint link mechanism with a joint connecting the center of the fixed joint, the combiner can be moved from a protruding state protruding from the housing to a storage state housed in the housing,
An elastic member is provided that connects at least one of the first connection portion, the second connection portion, and the holding portion and a portion that does not move with respect to the housing, and pulls the connected object by a restoring force;
The combiner is caused to transition from the stored state to the protruding state by the driving force,
Transitioning the combiner from the protruding state to the stowed state by the restoring force;
A combiner storage device. A moving body that contacts the first connecting portion and moves in the front-rear direction as viewed from the viewer;
The driving force is applied to the first connecting portion by the moving body.
The combiner storage device according to claim 1. A cam mechanism is constituted by the first connecting portion and the movable body,
The portion of the first connection portion that comes into contact with the moving body has a curved surface with a gradually changing curvature that controls a rotation angle of the first connection portion around the first axis.
The combiner storage device according to claim 2. The combiner storage device according to any one of claims 1 to 3,
A display that emits the display light; the combiner; and the housing.
A head-up display device.

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