JP6505279B1 - Elastic body for supporting mirror of head-up display device - Google Patents

Abstract

An object of the present invention is to improve the assemblability of an elastic member for pressing a mirror.
A rotary shaft (21) protruding from a side surface (6a) of a mirror (6), a bearing (23) supporting the rotary shaft (21), and an elastic member (26) pressing the mirror (6) in an axial direction 25 of the rotary shaft The present invention relates to a mirror support structure 20 of the head-up display device 2.
The elastic member 26 is constituted by a plate spring 26 a which can be mounted in a direction intersecting the axial direction 25 from the outside in a state where the rotary shaft 21 is axially supported by the bearing 23.
The flat spring 26 a is inserted into the gap 27 between the mirror 6 and the bearing 23 to press the mirror 6 in the axial direction 25 at one end side pressing portion 31 and at the other end side attachable to the bearing 23 The mounting portion 32 has a portion of a shape folded in half at an intermediate folding portion 33.
[Selected figure] Figure 5A.

Description

The present invention relates to a mirror supporting elastic body of a head-up display device.

  In recent years, mounting of a head-up display device on a vehicle such as a car has been promoted.

  Although there are various types of head-up display devices, they have a display device capable of displaying driving information, and a mirror capable of reflecting the driving information (display image) from the display device toward the front of the cabin. Things exist.

  In the head-up display device having such a configuration, a mirror of the driving information is generated in front of the passenger compartment by reflecting the driving information from the display device toward the front of the passenger compartment by the mirror, and the front is displayed The driving information can be viewed without causing the passenger who is driving facing to make a large eye movement. At this time, by providing a mirror in the middle of the light path, it becomes possible to lengthen the light path of the driving information from the display device and to display the driving information in an enlarged manner. Thus, the head-up display device can achieve distant display of driving information and a wide angle of driving information.

  A head-up display device is provided with a mirror support structure having a rotary shaft projecting from the side of the mirror, a bearing for supporting the rotary shaft, and an elastic member for pressing the mirror in the axial direction of the rotary shaft Exists (see, for example, Patent Document 1).

Patent No. 5446837 gazette

  In the head-up display device described in Patent Document 1, the elastic member used for the mirror support structure is a leaf spring bent in a mountain shape. Then, an axial hole is formed at the top of the mountain-shaped leaf spring, and the rotary shaft is mounted on the bearing in a state where the rotational shaft passes through the axial hole, thereby holding the mirror on the bearing.

  However, since the elastic member is not particularly fixed, when attaching the rotary shaft to the bearing, it is necessary to work while holding the elastic member so that the elastic member does not rotate from the state of pressing the mirror, It took time to assemble.

  Therefore, the present invention is mainly intended to solve the above-mentioned problems.

In order to solve the above problems, the present invention is
A mirror support of a head-up display device installed between a side surface of a mirror and a bearing for pivotally supporting a rotation shaft projecting from the side surface of the mirror and pressing the side surface of the mirror in the axial direction of the rotation shaft In the elastic body,
The elastic body includes a mounting portion attached to the bearing and at least two elastic pressing pieces extending from the mounting portion, and is mounted in a direction intersecting the axial direction.
The elastic pressing piece is characterized in that the pressing portion straddles the rotation axis and presses the side surface of the mirror in the axial direction.

  According to the present invention, with the above configuration, the assemblability of the elastic member for pressing the mirror can be improved.

It is a block diagram of a head up display apparatus. It is a perspective view of the mirror support structure of FIG. It is the elements on larger scale which looked at the mirror from the front which shows the state which an elastic member presses the side of a mirror. It is a side view which shows the pressing position of the elastic pressing piece with respect to the side surface of the mirror in a use position (standard position). It is a side view which shows the pressing position of the elastic pressing piece with respect to the side surface of the mirror in a use position (height adjustment position). It is a side view which shows the pressing position of the elastic press piece with respect to the side surface of the mirror in a standby position. It is a perspective view of the elastic member used for the mirror support structure of FIG. It is a front view of the elastic member of FIG. 5A. It is a rear view of the elastic member of FIG. 5A. It is a side view of the elastic member of FIG. 5A. It is a top view of the elastic member of FIG. 5A. It is a perspective view of the modification of an elastic member. It is a perspective view of the bearing used for the mirror support structure of FIG. It is a front view of the bearing of FIG. 7A. It is a rear view of the bearing of FIG. 7A. FIG. 7B is a side view of the bearing of FIG. 7A. It is a top view of the bearing of FIG. 7A. It is a perspective view which shows the state which attached the elastic member of FIG. 5A to the bearing of FIG. 7A. It is a front view of FIG. 8A. It is a rear view of FIG. 8A. It is a side view of FIG. 8A. It is a top view of FIG. 8A.

Hereinafter, the present embodiment will be described in detail with reference to the drawings.
1 to 8E are for describing this embodiment.

  <Configuration> The configuration of this embodiment will be described below.

  As shown in FIG. 1, a head-up display device 2 is mounted on a vehicle 1 such as a car.

  There are various types of head-up display devices 2. In this embodiment, a display device 4 capable of displaying driving information 3 and driving information 3 (display image) from the display device 4 are displayed in front of the passenger compartment 1a. It is assumed that a mirror 6 (reflection member) that can reflect light to the side is provided.

  Here, the direction will be described based on the state where the head-up display device 2 is mounted on the vehicle 1. The longitudinal direction of the vehicle is substantially the longitudinal direction X or depth direction of the head-up display device 2, the lateral direction is the substantially transverse direction Y of the head-up display device 2, and the vertical direction of the vehicle 1 is substantially the vertical direction of the head-up display device 2. It becomes Z. However, since the head-up display device 2 may be mounted on the vehicle 1 in an inclined state, these directions may be deviated to some extent.

  The head-up display device 2 causes the occupant 7 driving while facing the front to visually recognize the driving information 3 without causing a large eye movement. The head-up display device 2 is installed inside the instrument panel 12 provided at the front of the compartment 1 a together with the casing 11 in a state where the display device 4 and the mirror 6 are accommodated inside the casing 11. In the upper surface of the casing 11 and the upper surface of the instrument panel 12, openings 13 and 14 for passing the operation information 3 are provided. A transparent or translucent dustproof cover 15 or the like is installed in at least one of the openings 13 and 14 in a fixed state or an openable / closable state. Although the dustproof cover 15 may be flat, it may have a concave shape or the like which is recessed downward as viewed from the side in order to prevent the dustproof cover 15 from being reflected on the front window 16 or the like.

  The driving information 3 having passed through the openings 13 and 14 is reflected by the front window 16 or is reflected by a dedicated reflecting plate called a combiner or the like installed on the front side of the openings 13 and 14. It is visually recognized as a virtual image 18. In order to reflect the driving information 3, the front window 16 is provided with, for example, a reflective film, a fine reflecting surface, or the like in a required range in which at least the driving information 3 is projected.

  The driving information 3 is general information to support driving. The driving information 3 includes, for example, speed information, road information (for example, lane display, leading car display, oncoming car display, pedestrian display, obstacle display, etc.), route information (for example, intersection information or the like) Left and right indication), destination information (for example, arrival time and travel distance to the destination), traffic jam information, service information (for example, parking lot information, gas station information, surrounding facility information), , And other indications.

  The display device 4 can use a liquid crystal panel, an organic EL panel, or the like. When a liquid crystal panel is used for the display device 4, a lighting device 4 a serving as a backlight is provided on the back side of the liquid crystal panel. Further, as the display device 4, a projector using a DLP unit which reflects laser light by a micro mirror can be used. The display image (the driving information 3) of the display device 4 is controlled by the control unit 4b.

  The passenger compartment 1 a is a space where the occupant 7 in the vehicle 1 gets on. The mirror 6 is an optical component (reflection member) such as a reflection mirror. For the mirror 6, a plane mirror that reflects the operation information 3 (display image) from the display device 4 at the same magnification, a curved surface mirror (concave mirror) that reflects in an enlarged scale, etc. are used alone or in combination. In the embodiment, two mirrors 6 are provided at the front and back). The mirror 6 can be directly fixed (fixed mirror) to the inside of the casing 11 like the right one in the figure, for example. Also, the mirror 6 can be installed so as to be movable by the mirror support structure 20, for example, like the one on the left side in the figure (movable mirror).

  With respect to the head-up display device 2 as described above, in this embodiment, the mirror support structure 20 is as follows.

(1) As shown in FIG. 2, the mirror support structure 20 includes the rotary shafts 21 and 22 protruding from the side surface 6 a of the mirror 6, the bearings 23 and 24 for supporting the rotary shafts 21 and 22, and the mirror 6. And an elastic member 26 for pressing the rotational shaft 21 and 22 in the axial direction 25 of the rotary shafts 21 and 22.
The elastic member 26 is constituted by a plate spring 26 a which can be mounted in a direction intersecting the axial direction 25 from the outside in a state where the rotary shaft 21 is axially supported by the bearing 23.
As shown in FIG. 3, the flat spring 26 a is inserted into the gap 27 between the mirror 6 and the bearing 23 to press the mirror 6 in the axial direction 25 against the pressing portion 31 on one end side and the bearing 23. The mounting portion 32 on the other end side that can be mounted has a portion (mounting portion 29) shaped in half by the middle folded portion 33.

  Here, the mirror support structure 20 rotatably supports (at least one of) the mirror 6 about the rotation shafts 21 and 22.

  The mirror 6 is used when the device is not used or when the amount of incident external light into the casing 11 at the time of use of the device is large in order to avoid the influence on the display device 4 due to the incidence of outside light into the inside of the casing 11 And so on, with the mirror 6 retracted from the use position 34 (for example, in a slightly laid state as shown in FIGS. 4A and 4B) to the standby position 35 (eg, in a standing state as shown in FIG. 4C). Needs to be directed to the display device 4 so as not to be retroreflected.

  Therefore, the mirror 6 (movable mirror) supported by the mirror support structure 20 as shown in FIG. 2 can be used between the use position 34 and the standby position 35 using the mirror movable mechanism 36 (or mirror rotation mechanism). It can be moved (turned) automatically. Specifically, the influence on the display device 4 is, for example, damage to the display device 4 due to the mirror 6 reflecting the outside light incident on the inside of the casing 11 toward the display device 4, and in particular, the mirror 6 In the case where a concave mirror is used, external light is condensed by the concave mirror and is irradiated to the display device 4, so that the damage of the display device 4 becomes large.

  The mirror movable mechanism 36 may be configured by a link mechanism or may be configured by a gear mechanism. In this embodiment, the mirror movable mechanism 36 includes an arm 37 attached to the rotary shaft 21 and an actuator 38 for rotating the rotary shaft 21 and the mirror 6 via the arm 37. When the mirror movable mechanism 36 is a link mechanism, the arm 37 is moved by an actuator 38 such as a cylinder.

  When the mirror movable mechanism 36 is a gear mechanism, the arm portion 37 extends, for example, in the radial direction of the rotary shaft 21 and is a gear such as a sector gear having gear teeth 37a at its tip. The sector gear is formed at an angle (approximately 25 ° to 30 °) covering at least the pivot range between the standby position 35 and the use position 34. The actuator 38 uses a motor. The motor engages a gear such as a drive gear 38a attached to the output shaft with the gear teeth 37a of the sector gear to rotationally drive the arm portion 37. The pivot member (or the shaft attachment member) such as the arm portion 37 and the drive gear 38a constitutes a drive power transmission portion (or drive power transmission mechanism). Note that, contrary to the above, the arm portion 37 may be attached to the output shaft of the motor, and the drive gear 38 a may be attached to the rotating shaft 21. The arm portion 37 is biased toward the use position 34 or the standby position 35 by the return spring 39. The motor is fixed to the casing 11 via the mounting bracket 40.

  Furthermore, by mounting the mirror 6 on the vehicle 1, the mirror 6 is affected by the vibration of the vehicle. When the mirror 6 moves due to the vehicle vibration, the driving information 3 (display image) is blurred. In particular, when the mirror 6 is enlarged to increase the angle of view of the driving information 3 (the virtual image 18 thereof), the mirror 6 becomes heavier accordingly, which makes the vehicle 6 more susceptible to vehicle vibration. Therefore, in order to prevent the influence of the vehicle vibration, the mirror 6 is held so as not to move by the vehicle vibration by pressing the mirror 6 in the axial direction 25 using the elastic member 26.

  The side surfaces 6 a of the mirror 6 are a pair of opposite sides provided with the rotation shaft 21, and are, for example, the vertical sides of the mirror 6. The rotating shafts 21 are provided so as to project laterally from the side surfaces 6 a of the mirror 6 so as to be positioned on the same axis. The rotation shaft 21 may be provided at any position of the side surface 6 a of the mirror 6, but in this embodiment, it is provided at the middle portion (in the vertical direction Z) of the side surface 6 a of the mirror 6. The rotating shaft 21 may be provided separately from the mirror 6, but when the mirror 6 is made of resin, the rotating shaft 21 can be formed integrally with the mirror 6.

  The elastic member 26 is provided on one side surface 6 a (the pressing side) of the mirror 6 and presses and urges the mirror 6 toward the other side surface 6 a (the pressed side). The elastic member 26 may be provided on either side, but in this embodiment, the elastic member 26 is provided on the side of the arm portion 37 (drive side). The bearings 23 and 24 may have different structures on one side (the pressing side) on which the elastic member 26 is provided and on the other side (the pressed side) on which the elastic member 26 is not provided.

  The axial direction 25 is installed substantially horizontally in the width direction Y in a state of being mounted on the vehicle 1. The mirror 6 has a horizontally elongated shape extending substantially in the width direction Y, and is pivoted in the substantially vertical direction Z about the rotation shaft 21. By turning the mirror 6 in the vertical direction Z, the influence of the above-mentioned external light is prevented (rotation from the use position 34 in FIG. 4A and FIG. 4B to the standby position 35 in FIG. 4C). Adjust the display height (turning within the use position 34 between FIG. 4A and FIG. 4B) so that the operation information 3 is displayed at the optimum position according to the physical size (or eye height) Can.

  The elastic member 26 will be described later. The outer side is the outside of the bearing 23. The direction intersecting the axial direction 25 widely includes directions other than the axial direction 25. However, the direction in which the elastic member 26 is attached to the bearing 23 is a direction substantially orthogonal to the axial direction 25 (radial direction of the rotation shaft 21) Or it is preferable to set it as the direction near it. In this embodiment, the mounting direction 28 of the plate spring 26a with respect to the bearing 23 will be described as substantially (upward and downward) Z in the vertical direction.

  The flat spring 26a is an elastic member 26 made of a metal plate (spring steel) having a uniform thickness, and has a shape as shown in FIGS. 5A to 5E (see also FIGS. 2 and 3 together) ). The flat spring 26a is processed into a desired three-dimensional shape that can be elastically deformed by bending a flat surface having a required flat shape in an out-of-plane direction or the like. The bent portion of the plate spring 26a may be rounded as appropriate so as not to have a sharp corner.

  The flat spring 26a of this embodiment is substantially U-shaped in a side view that can be attached from the outside to a bearing 23 (FIGS. 7A to 7E, which will be described in detail later) by bending a metal plate in two. It has a part (FIG. 8A-FIG. 8E about the mounted state).

  Then, a substantially U-shaped portion in a side view of the plate spring 26a is constituted by the base 31a of the pressing portion 31, the folded back portion 33, and the base 32a of the mounting portion 32, and wraps the bearing 23 (upper part) from three directions. A mounting portion (clasping portion or clamping portion) 29 which can be held (or held on both sides of the bearing 23) is configured. The pressing portions 31 and the base portions 31a and 32a of the mounting portion 32 are portions on the side of the folding back portion 33, respectively, and the pressing portion 31 and the mounting portion 32 extend along the bearing 23 in the mounting direction 28 33) has a tip on the side away from 33).

  The gap 27 between the mirror 6 and the bearing 23 is formed at least in a size necessary for mounting the elastic member 26. The pressing portion 31 may have any shape or structure as long as the mirror 6 can be effectively pressed in the axial direction 25. The preferred shape and structure of the pressing portion 31 will be described later. The mounting portion 32 may have any shape or structure as long as the mounting portion 32 can be effectively mounted to the bearing 23. The preferred shape and structure of the mounting portion 32 will be described later.

  The folded back portion 33 is a portion which folds the surface of the plate spring 26 a in two at an angle of approximately 180 ° or more, and is a portion adjacent to the pressing portion 31 and the mounting portion 32 to connect them. The pressing portion 31 and the mounting portion 32 are opposed to each other in a state in which the tip end side is narrowed with respect to a substantially parallel state or a parallel state by the folded back portion 33. The base 31 a of the pressing part 31, the base 32 a of the attaching part 32 and the folded part 33 are formed to have substantially the same width. Further, for example, when an impact load acts on the mirror 6, the folded back portion 33 also functions as a starting point of the elastic deformation of the plate spring 26a. The impact load is the maximum load (about 50 G) assumed to act during the traveling of the vehicle 1.

  The folded back portion 33 (see FIG. 5D) is necessary for mounting (holding or clamping) between the pressing portion 31 and the mounting portion 32 on the upper portion (or the front side in the mounting direction 28) of the bearing 23 It has a folded portion 33a for securing and forming a gap. The folded portion 33 a has a width substantially equal to or slightly larger than the thickness of the upper portion of the bearing 23. The folded portion 33a may be a flat surface, a convex surface, or a concave surface. In this embodiment, the folding width portion 33a is substantially flat, and the inner angle between the pressing portion 31 and the mounting portion 32 on both sides of the folding width portion 33a is 90 ° or less (for example, 90 ° to 60 °). The folded portion 33 is formed in a square shape by respectively providing two bent portions 33 b and 33 c which become an angle or the like. The two bent portions 33b and 33c may have the same angle or different angles. When an internal angle smaller than 90 ° is provided in the bent portions 33b and 33c, the thickness of the upper portion of the bearing 23 is set between the pressing portion 31 and the mounting portion 32 so that a clamping force with respect to the bearing 23 is generated. Alternatively, there may be provided a portion where the distance is narrow.

  (2) The pressing portion 31 may have a plurality of elastic pressing pieces 41 and 42 capable of pressing the mirror 6 in the axial direction 25 with different lengths.

  Here, the plurality of elastic pressing pieces 41 and 42 having different lengths are integrally provided on the tip end side of the pressing portion 31. As shown in FIG. 4A, in the plurality of elastic pressing pieces 41 and 42, a short first elastic pressing piece 41 extending to the upper side than the center of the rotating shaft 21 and a long extending to the lower side than the center of the rotating shaft 21 At least two of the second resilient pressing pieces 42 are formed.

  The first resilient pressing piece 41 and the second resilient pressing piece 42 are formed in a bifurcated shape so as to sandwich both sides of the rotary shaft 21 (in the front-rear direction X), and the pressing portion 31 is viewed from the front or back It extends substantially parallel to one another in the mounting direction 28 (downward). Thus, the first elastic pressing piece 41 and the second elastic pressing piece 42 sandwich the center of the rotation shaft 21 substantially along the side surface 6a of the mirror 6 (in the inclined position at the use position 34). (The opposite side) and the position of the obliquely upper side and the position of the obliquely lower side are pressed.

  It is preferable that the resilient pressing pieces 41 and 42 have the same width. The pressing portion 31 is formed to be wider than the diameter of the rotation shaft 21 by the amount having the resilient pressing pieces 41 and 42. The first resilient pressing piece 41 and the second resilient pressing piece 42 have a length relationship that matches the inclined arrangement of the mirror 6 at the use position 34, but the first resilient pressing piece 41 and the second resilient pressing piece 42 The length of the resilient pressing piece 42 may be reversed depending on the situation. Further, the base 31 a of the pressing portion 31 is pressed toward the bearing 23 by the reaction force when the resilient pressing pieces 41 and 42 press the side surface 6 a of the mirror 6.

  (2a) The plurality of elastic pressing pieces 41 and 42 having different lengths each have a length setting portion and an elastic pressing portion. Among these, the resilient pressing portions have the same shape.

  Here, as shown in FIG. 5A, the elastic pressing pieces 41 and 42 are, in order from the side closer to the turnback portion 33, the parallel portions 41a and 42a, the bent portions 41b and 42b, the inclined portions 41c and 42c, and the reverse. It is a pressing spring having the bent portions 41d and 42d and the return portions 41e and 42e continuously. Among them, the parallel portions 41a and 42a are length setting portions, and the bending portions 41b and 42b, the inclined portions 41c and 42c, the reverse bending portions 41d and 42d, and the return portions 41e and 42e are elastic pressing portions. The pressing force of the elastic pressing pieces 41, 42 on the side surface 6a of the mirror 6 is set by the bending angle of the bent portions 41b, 42b, the length of the inclined portions 41c, 42c, and the like.

  The parallel portions 41 a, 42 a have surfaces extending in the mounting direction 28 perpendicular to the axial direction 25. The parallel portions 41a and 42a constituting the length setting unit optimally set the lengths of the resilient pressing pieces 41 and 42, respectively.

  The bent portions 41b and 42b are corner portions formed by the parallel portions 41a and 42a and the inclined portions 41c and 42c. The bent portions 41 b and 42 b serve as starting points of elastic deformation of the elastic pressing pieces 41 and 42 when the side surface 6 a of the mirror 6 is pressed. The curved portions 41 b and 42 b may be rounded.

  The inclined portions 41 c and 42 c are arm portions extending obliquely toward the side surface 6 a of the mirror 6. The inclined portions 41c and 42c are formed to have a length and an angle that interfere with the side surface 6a of the mirror 6 in order to generate a pressing force and set the strength of the pressing force. In order to generate substantially the same pressing force as the first elastic pressing piece 41 and the second elastic pressing piece 42 as the elastic pressing portion, the bending angle of the bending portions 41b and 42b and the length of the inclined portions 41c and 42c, etc. Preferably, the shapes of are substantially the same as each other.

The reverse bending portions 41d and 42d are portions bent to the opposite side to the bending portions 41b and 42b, and are corner portions formed by the tip portions of the inclined portions 41c and 42c and the return portions 41e and 42e. The reverse bending portions 41 d and 42 d are portions (pressure end or pressure portion ) that directly contact the side surface 6 a of the mirror 6 to apply a pressing force. The reverse bending portions 41d and 42d may be rounded.

  The return portions 41e and 42e extend to the side opposite to the mirror 6, and when the plate spring 26a is attached to the bearing 23, the tip portions of the elastic pressing pieces 41 and 42 against the side surface 6a of the mirror 6 (reverse bending portion 41d , 42d), and a short guide portion that functions as a biting prevention part that prevents biting or sticking of the tip of the mirror 6 to the side face 6a.

  (3) The pressing portion 31 may have another elastic pressing piece 43 capable of pressing and holding the rotation shaft 21 in the mounting direction 28 with respect to the bearing 23 of the plate spring 26 a.

  Here, the mechanism for pressing and holding the rotary shaft 21 may be provided separately from the plate spring 26a, but in this embodiment, the plate spring 26a is integrally provided with another elastic pressing piece 43, so that the structure and function are provided. Integrate the As shown in FIG. 5B, another resilient pressing piece 43 is located, for example, between the first resilient pressing piece 41 and the second resilient pressing piece 42, and viewed from the front, the mounting direction 28 (downward) It extends substantially parallel to the resilient pressing pieces 41 and 42 and is bent to the side opposite to the mirror 6. Apart from the first elastic pressing piece 41 and the second elastic pressing piece 42, another elastic pressing piece 43 is formed to have a width dimension necessary to press and hold the rotary shaft 21. Between the root portion of the resilient pressing pieces 41 and 42 and the root portion of another resilient pressing piece 43 in the pressing portion 31, an arch-shaped incised portion for preventing stress concentration may be provided.

  (3a) Another elastic pressing piece 43 has a length setting portion and an elastic pressing portion.

  Another elastic pressing piece 43 is a pressing spring having a parallel portion 43a, a bending portion 43b, an inclined portion 43c, a reverse bending portion 43d, and a pressing portion 43e in this order from the side close to the folding portion 33 It is done. Among them, the parallel portion 43a is a length setting portion, and the bending portion 43b, the inclined portion 43c, the reverse bending portion 43d, and the pressing portion 43e are elastic pressing portions. The pressing force on the rotation shaft 21 by another elastic pressing piece 43 is set by the bending angle of the bending portion 43b, the length of the inclined portion 43c, and the like. The base portion 31 a of the pressing portion 31 is pressed toward the bearing 23 by the reaction force when the pressing portion 43 e presses (the uppermost portion of) the rotation shaft 21.

  The parallel portion 43 a has a surface perpendicular to the axial direction 25 and extending in the mounting direction 28. The parallel portion 43a constituting the length setting portion optimally sets and adjusts the length of another elastic pressing piece 43. If it is not necessary to set / adjust the length of another elastic pressing piece 43 or if it is possible to set / adjust the length by the bent portion 43b or the like, the parallel portion 43a may not be provided.

  The bending portion 43 b is a corner portion formed by the parallel portion 43 a (or the base 31 a of the pressing portion 31) and the inclined portion 43 c. The bending portion 43 b is a starting point of the elastic deformation of another elastic pressing piece 43 when pressing the rotation shaft 21. The bending portion 43b is bent to the opposite side to the bending portions 41b and 42b. The bent portion 43b may be rounded.

  The inclined portion 43 c is an arm that obliquely extends toward the rotation axis 21. The inclined portion 43c is formed to have a length and an angle that interfere with the rotating shaft 21 in order to generate a pressing force and set the strength of the pressing force. The inclined portion 43 c is inclined to the side opposite to the resilient pressing pieces 41 and 42.

  The reverse bending portion 43d is a portion bent to the opposite side to the bending portion 43b, and is a corner portion formed by the tip portion of the inclined portion 43c and the pressing portion 43e. The reverse bending portion 43 d may be rounded.

  The pressing portion 43 e extends substantially in the axial direction 25 and directly presses and holds the top of the rotary shaft 21 from above in a line contact state (pressing end). The pressing portion 43 e is formed to have a length necessary for pressing and holding the rotating shaft 21. The pressing portion 43e may be a return portion similar to the resilient pressing pieces 41 and 42.

  (4) As shown in FIG. 3, in the plate spring 26 a, the mounting portion 32 may be fixed to the bearing 23, and the portion of the pressing portion 31 that presses the mirror 6 may not be in contact with the bearing 23.

  Here, the mounting portion 32 may be provided with a fixing portion 44 that can be fixed to (the upper portion of) the bearing 23 (a base 32a) on the side of the folded back portion 33. The fixing portion 44 can be provided over the entire area of the mounting portion 32, as shown in FIG. Further, as shown in FIGS. 5A to 5E, one or more fixing portions 44 can be provided for a part of the mounting portion 32.

  When the fixing portion 44 is partially provided to the mounting portion 32, it can be fixed (sandwiched) to the upper portion of the bearing 23 with a force stronger than the holding force and the clamping force of the mounting portion 29. In this embodiment, a plurality of (or a pair of) fixing portions 44 are provided on both sides of the mounting portion 32 so as to be separated and independent from the central portion of the mounting portion 32. The mounting portion 32 can have the same width as the base portion 31 a of the pressing portion 31 and the mounting portion 32, including the fixing portion 44.

  The fixing portion 44 (see FIG. 5A) is an elastic piece having a bent width-increased portion 44a, a bent portion 44b, a sloped portion 44c, a reverse bent portion 44d, and a return portion 44e in this order from the side closer to the folded portion 33. It is assumed. When the mounting portion 29 of the flat spring 26 a is mounted on the upper portion of the bearing 23 (sandwich is held from three directions or sandwiching both surfaces), the fixing portion 44 is mounted on the surface of the bearing 23 opposite to the mirror 6. Also, by being strongly in resilient contact, the upper portion of the bearing 23 is clamped in the thickness direction between the base 31 a of the pressing portion 31 and the clamping spring (clamping). The clamping force of the fixing portion 44 with respect to the bearing 23 is set by the bending angle of the bending portion 44b, the length of the inclined portion 44c, and the like.

  The fold widening portion 44a is a continuous extension with the fold 33 (the fold 33a of the fold 33), and the width of the fold 33 is wider (overall or partially) than the fold 33a to fold The bending portion 44b can be bent at an internal angle smaller than 90 ° (for example, 90 ° to 60 °). Thereby, the fixing portion 44 can generate a larger clamping force.

  The bent portion 44b is a corner portion formed by the bent portion 44a and the inclined portion 44c. The bent portion 44 b is a starting point of elastic deformation of the fixing portion 44 when the upper portion of the bearing 23 is clamped. The bent portion 44b may be rounded.

  The inclined portion 44 c is an arm extending obliquely toward the bearing 23. The inclined portion 44c is formed to have a length and an angle that interfere with the bearing 23 in order to generate a clamping force or to set the strength of the clamping force.

  The reverse bending portion 44d is a portion bent to the opposite side to the bending portion 44b, and is a corner portion formed by the inclined portion 44c and the return portion 44e. The reverse bending portion 44 d is a portion (sandwiching end) that directly contacts the bearing 23 to exert a clamping force. The reverse bending portion 44d may be rounded.

  The return portion 44 e extends to the side opposite to the bearing 23 and guides the tip portion (around the reverse bending portion 44 d) of the fixed portion 44 when attaching the plate spring 26 a to the bearing 23, or the tip to the bearing 23 It is a short guide part which functions as a biting prevention part etc. which prevent biting and sticking of a part.

  On the other hand, the portions pressing the mirror 6 of the pressing portion 31 are the resilient pressing pieces 41 and 42 that directly press the mirror 6, and in particular, the tip side of the resilient pressing pieces 41 and 42 on the tip side than the bent portions 41b and 42b. It is a part (Inclining part 41c, 42c, reverse bending part 41d, 42d, and return part 41e, 42e). These components are separated from the bearing 23 and become non-contact parts by the bent portions 41b and 42b directing the inclined portions 41c and 42c to the side opposite to the bearing 23 (see FIG. 3).

  (5) As shown in FIG. 8A (see also FIG. 5A and FIG. 7A collectively), a locking portion 45 may be provided between the bearing 23 and a portion on the side of the folded back portion 33 of the pressing portion 31.

  Here, the locking portion 45 is provided as necessary. The locking portion 45 can be configured, for example, by a locking hole 45 a (FIG. 5A) provided in the pressing portion 31 and a locking claw 45 b (FIG. 7A) integrally provided in the bearing 23. When the elastic member 26 is attached to the bearing 23, the engaging hole 45a of the pressing portion 31 is engaged and engaged with the engaging claw 45b of the bearing 23, so that the position is aligned and engaged with the engaging claw 45b. A blind hole 45a is provided. The elastic member 26 is engaged with the bearing 23 in the axial direction 25 and in the direction (radial direction of the rotary shaft 21) orthogonal to the axial direction 25 by the engagement locking of the locking claw 45b and the locking hole 45a. It is fixed.

  The locking portion 45 is preferably provided at a position opposite to the fixing portion 44 and the axial direction 25 (or the longitudinal direction X) with the bearing 23 interposed therebetween. As a result, the elastic member 26 double-fixes both sides of the bearing 23 in the axial direction 25 by the locking portion 45 and the fixing portion 44 (sandwich fixing and locking fixation). In this embodiment, a pair of locking portions 45 are provided on both sides of the rotating shaft 21 in accordance with the fixed portion 44.

  (6) Furthermore, the mounting portion 32 may be screwed to the bearing 23.

  Here, the mounting portion 32 can be provided with a screw fixing portion 46 (see FIG. 5A) for screw fixing to the bearing 23 and the casing 11 as necessary. The screw fixing direction is, for example, the axial direction 25, the mounting direction 28, or the other direction. In this embodiment, the screw fixing portion 46 is shaped like a hat having a top 46a, left and right legs 46b, and left and right legs 46c continuously, and is fixed in the mounting direction 28.

  The top 46 a has a surface substantially perpendicular to the base 32 a of the attachment 32 and extends in the front-rear direction X longer than the width of the base 32 a of the attachment 32. The left and right legs 46b are bent substantially downward from both ends of the top 46a. The foot 46c is bent substantially in parallel with the top 46a from the lower end of each leg 46b to the opposite side (outward in the front-rear direction X) to the top 46a.

  The foot 46c is wider than the top 46a, and the foot 46b has a widening shape that widens from the top 46a to the foot 46c. The foot 46 c is a mounting surface for the bearing 23 and the casing 11, and the foot 46 c is provided with a screw hole 46 d for screwing in the mounting direction 28.

  The hat-shaped screw fixing portion 46 may be provided separately from the attaching portion 32 and installed in the attaching portion 32. However, it is preferable to integrally form the tip end side of the attaching portion 32. Therefore, the base 32a of the mounting portion 32 is extended longer than the position of the lower edge of the base 31a of the pressing portion 31 so that the screw fixing portion 46 can contact the bearing 23 (extension 32b ) Is connected to the middle of the side edge of the top 46 a of the screw fixing portion 46 via the bending portion.

  The extension portion 32b of the mounting portion 32 and the top portion 46a of the screw fixing portion 46 can be provided with a notch portion 47 for preventing interference for inserting another resilient pressing piece 43 downward.

  Although one or more fixing structure parts such as the screw fixing part 46, the fixing part 44, the locking part 45 and the like can be provided, the elastic member 26 can be fixed to the bearing 23 (for example, As shown in FIG. 6), the greater the number, the stronger the fixed state. The screw fixing portion 46 is highly effective as the strongest fixing structure portion.

  (7) About the bearing 23

  In the mirror support structure 20, the bearing 23 to which the elastic member 26 is attached is, for example, as shown in FIGS. 7A to 7E. The elastic member 26 is attached to the bearing 23 as shown in FIGS. 8A to 8E.

  Among the left and right bearings 23 attached to both sides of the mirror 6, the pressing side bearing 23 provided with the elastic member 26 is, for example, a mounting seat 51 for mounting on the casing 11 and a rotation shaft 21 on the mounting seat 51. And the shaft support 52 for supporting the shaft.

  The mounting seat portion 51 extends in a direction substantially perpendicular to the rotation shaft 21 (longitudinal direction X) in a dimension longer than the diameter of the rotation shaft 21 so as to extend on both sides of the rotation shaft 21 in plan view. The lower surface is fixed to the casing 11.

  The bearing 52 may have an axial hole extending in the axial direction 25. In this embodiment, the bearing 52 is as follows. The pivot support portion 52 is a pair integrally formed substantially at the center of (the front-rear direction X of) the upper surface of the mounting seat portion 51 at intervals substantially equal to the diameter of the rotation shaft 21 so as to be located on both sides of the rotation shaft 21. The shaft support wall 52a of Between the pair of shaft support walls 52a, an open portion 52b is formed on the front side (upper side) of the mounting direction 28 of the plate spring 26a with respect to the bearing 23 so that the outer peripheral surface of the rotary shaft 21 can be mounted from above. Further, a bearing groove 52c capable of rotatably supporting the outer peripheral surface of the rotary shaft 21 is formed between the pair of shaft support walls 52a on the back side (lower side) in the mounting direction 28.

  The pair of shaft support walls 52a is provided at its tip (upper end) with a spring receiving portion 54 integrally extending from the open portion 52b to the front side in the mounting direction 28. The spring receiving portion 54 is a portion for receiving (the mounting portion 29) around (the mounting portion 29 of) the folded portion 33 of the plate spring 26a, and has a length substantially equal to the length to the extension portion 32b of the mounting portion 32 Extend. The distance between the pair of spring receiving portions 54 is approximately equal to that of the opening 52b, and partially extends the opening 52b.

  Here, the bearing 23 has a convex shape in which the mounting seat portion 51 and the shaft support portion 52 match the respective portions of the hat-shaped screw fixing portion 46 when viewed from the front side or the back side. Then, the convex portion of the bearing 23 is the contact surface with respect to the screw fixing portion 46. For example, between the upper ends of the pair of shaft support walls 52a of the shaft support portion 52, the top portion 46a of the screw fixing portion 46 is abutted so as to straddle. The leg portion 46 b is disposed in contact with the outer side surface of the pair of shaft support walls 52 a so as to sandwich the leg portion 46 b. The foot portion 46 c is disposed in contact with the upper surfaces of both side portions of the mounting seat portion 51 so as to be placed thereon. In the bearing 23, the mounting direction 28 of the plate spring 26a is a direction in which the shaft support wall 52a and the spring receiving portion 54 extend with respect to the mounting seat portion 51.

  The mounting seat portion 51 is a pedestal portion for holding the rotating shaft 21 at a required height and attaching it to the casing 11. Screw holes 51 a for screwing to the casing 11 are formed on both sides of the mounting seat 51. The screw hole 51a is formed at a position coinciding with the screw hole 46d of the foot 46c, and the bearing 23 and the plate spring 26a are simultaneously fastened and fixed in the mounting direction 28 to the casing 11 by a fastening member such as a screw 51b (FIG. 7A). It is used to (tighten). From the lower surface side of the mounting seat portion 51, various pins 51c (insertion pins, positioning pins, etc.) for fitting and fixing or positioning in the casing 11 are protruded (FIG. 7B).

  The shaft support portion 52 is a portion that actually supports the rotary shaft 21 in the bearing 23. The pair of shaft support walls 52a project from the upper surface of the mounting seat 51 in the mounting direction 28 so that the height from the bottom of the bearing groove 52c is approximately the same as or slightly longer than the diameter of the rotary shaft 21. Be done. The opposing surfaces of the pair of shaft support walls 52a are parallel surfaces connecting the open portion 52b and the bearing groove 52c along the mounting direction 28, respectively. The parallel opposing surfaces are extended approximately the same as or slightly longer than the radius of the rotation shaft 21 with a distance approximately equal to the diameter of the rotation shaft 21. The dimension of the axial direction 25 of the pair of shaft support walls 52 a is substantially the same as the dimension of the axial direction 25 of the mounting seat 51.

  The open portion 52b is an opening portion having an interval substantially equal to or slightly larger than the diameter of the rotary shaft 21 to open the bearing groove 52c to the outside. The bearing groove 52c has a shaft receiving recess having a substantially semi-cylindrical surface or a substantially semi-cylindrical surface with a rounded rectangular surface having substantially the same diameter as the rotary shaft 21.

  The spring receiving portion 54 is raised so as to be substantially flush with the surface of the pivot portion 52 on the mirror 6 side, and has a surface substantially orthogonal to the axial direction 25. The spring receiving portions 54 are provided in a pair by being erected from the respective shaft support walls 52 a. When only the shaft hole is formed in the shaft support portion 52 without providing the open portion 52b, the spring receiving portion 54 has a width dimension (connecting portion) that covers substantially the entire area in the width direction of the shaft support portion 52. The spring receiving portion 54 is thicker than the thickness of the other portion of the bearing 23 in order to secure strength. By mounting the plate spring 26a so as to bridge and connect the pair of spring receiving portions 54, the opening portion 52b is closed by the mounting portion 29 of the plate spring 26a, and the rotation shaft 21 is not separated from the bearing 23 by closing. In the support portion 52.

  With the above configuration, the mirror support structure 20 is assembled as follows. First, the mounting seat 51 of the bearing 23 is installed in the casing 11, and in this state, the outer peripheral surface of the rotary shaft 21 is mounted on the shaft support 52 (between the pair of shaft support walls 52a) in the mounting direction 28 from the near side. The mirror 6 is supported and held by the bearing 23. The arm portion 37 may be attached to the rotation shaft 21 in advance.

  Next, a plate spring 26a is attached from the outside between the pair of shaft support walls 52a (the spring receiving portion 54 provided at the tip end portion thereof), and the open portion 52b is closed by the plate spring 26a. As a result, the rotary shaft 21 is accommodated and held in the support portion 52 so as not to be separated from the bearing 23, and the mirror 6 is pressed in the axial direction 25 by (the pressing portion 31 of) the plate spring 26a.

  At this time, the bearing 23 is stably installed in the casing 11 so as not to move, and the rotary shaft 21 is stably housed and installed in the bearing 23 so as not to be detached. The bearing 23 and the plate spring 26a can be easily screwed to the casing 11 because they are stably mounted so as not to be detached, and the assembling property is good.

  In addition, when the mirror 6 is supported and held by the bearing 23, even if the arm 37 is attached to the rotating shaft 21 in advance, the rotating shaft 21 can be attached to the shaft support 52, so Assemblability is good. Then, when the drive gear 38a of the actuator 38 is engaged with the gear teeth 37a of the arm portion 37, the arm portion 37 is restrained by the drive gear 38a and the rotary shaft 21 does not come off the bearing 23. Stabilize.

  Further, on the surface of the spring receiving portion 54 on the mirror 6 side, a locking claw portion 45b fitted and locked in the locking hole portion 45a provided in the pressing portion 31 is integrally provided as the locking portion 45. There is. The locking claw 45b is a protrusion that fits into the locking hole 45a. Thus, when the leaf spring 26a is mounted on the bearing 23, the locking claw 45b is fitted in the locking hole 45a, so that the pressing portion 31 is reliably engaged with the spring receiving portion 54 by the locking portion 45. I can stop it.

  Further, the reinforcing rib 56 may be integrally provided on the bearing 23. Thereby, the bearing 23 can be reinforced by the reinforcing rib 56.

  Specifically, the reinforcing rib 56 may have a first reinforcing rib 56 a extending in the axial direction 25. The first reinforcing rib 56 a mainly reinforces the spring receiving portion 54 in the axial direction 25. The first reinforcing rib 56 a can be provided on the surface of the bearing 23 (or the spring receiving portion 54) on the mirror 6 side or the surface on the opposite side to the mirror 6. The surface on the mirror 6 side of the bearing 23 is substantially flush with the mounting seat portion 51, the shaft support portion 52, and the spring receiving portion 54 when viewed from the side, and the surface on the opposite side to the mirror 6 is a mounting seat The portion 51 and the shaft support portion 52 and the spring receiving portion 54 are stepped. Therefore, in this embodiment, the first reinforcing rib 56a is provided on the surface of the bearing 23 on the mirror 6 side. Thus, by providing the first reinforcing rib 56a, the bearing 23 is axially oriented so that the spring receiving portion 54 and the like are not deformed to the opposite side to the mirror 6 by the reaction force of the pressing force to the mirror 6 by the pressing portion 31. It can be reinforced to 25.

  Further, the first reinforcing rib 56a may have a function of a guide (mounting guide) when mounting the plate spring 26a to the bearing 23. Therefore, the first reinforcing rib 56a is parallel to the surface of the bearing 23 on the mirror 6 side at intervals substantially equal to the width of the pressing portion 31 so as to be positioned on both sides of the pressing portion 31 of the plate spring 26a. Two pairs of The first reinforcing rib 56a can have a height within a range that fits in the gap 27 between the mirror 6 and the bearing 23. However, when using the first reinforcing rib 56a as a mounting guide, the first reinforcing rib 56a is at least The projection may have a height substantially the same as or slightly higher than the thickness of the plate spring 26a. The first reinforcing rib 56 a is at least sized over the movement range of the plate spring 26 a when attached to the bearing 23. In this embodiment, the first reinforcing rib 56a is continuously formed so as to cover at least substantially the entire area between the spring receiving portion 54 and the shaft support 52 (the shaft support wall 52a). Thus, the leaf spring 26a can be easily mounted to the bearing 23 by using the first reinforcing rib 56a as a mounting guide.

  Furthermore, the reinforcing rib 56 may have a second reinforcing rib 56 b having a surface orthogonal to the axial direction 25. The second reinforcing rib 56b mainly reinforces the space between the mounting seat portion 51, the shaft support portion 52, and the spring receiving portion 54. The second reinforcing rib 56b is provided in a portion on the mirror 6 side of the bearing 23 so as to form surfaces connecting the outer portions of the respective spring receiving portions 54 and the respective axial support walls 52a and the upper ends of both ends of the mounting seat portion 51. Be As described above, by providing the second reinforcing rib 56b, the bearing 23 is made perpendicular to the axial direction 25 so that the pair of shaft support walls 52a and the spring receiving portion 54 that constitute the shaft support portion 52 do not deform in the approaching and separating directions. It can reinforce in the direction.

  Then, the second reinforcing rib 56b may have an inclined edge 56c that diagonally connects between the top of the pair of spring receiving portions 54 and both ends of the mounting seat 51. The second reinforcing rib 56b becomes a triangular rib constituting the truss structure by the inclined edge 56c, and by preventing the expansion and contraction of the corner portion between the mounting seat 51 and the shaft support 52 (the shaft support wall 52a), It is possible to prevent stress concentration on the corner portion. In addition, the second reinforcing rib 56b can be formed into a simple shape without waste by the inclined edge 56c.

  In addition, the reinforcing rib 56 may have a third reinforcing rib 56 d having a surface orthogonal to the axial direction 25. The third reinforcing rib 56 d mainly reinforces the space between the mounting seat 51 and the shaft support 52. The third reinforcing rib 56 d is provided at a portion of the bearing 23 opposite to the mirror 6 so as to form a surface connecting the outer portion of each shaft support wall 52 a and the upper end of the mounting seat portion 51. The third reinforcing rib 56d is provided parallel to the second reinforcing rib 56b at an interval. Thus, by providing the third reinforcing rib 56 d, the bearing 23 can be reinforced in the direction orthogonal to the axial direction 25 so that the bearing 52 is not deformed with respect to the mounting seat 51.

  The third reinforcing rib 56d may have an inclined edge 56e which diagonally connects between the top of the pair of shaft support walls 52a and both ends of the mounting seat 51. The third reinforcing rib 56d becomes a triangular rib constituting a truss structure by the inclined edge portion 56e, and the expansion / contraction deformation of the corner portion between the mounting seat portion 51 and (the shaft support wall 52a of) the shaft support portion 52 is prevented. It is possible to prevent stress concentration on the corner portion. In addition, the third reinforcing rib 56d can be formed into a simple shape without waste by the inclined edge 56e.

  Furthermore, the bearing 23 may be provided with a stopper 57 for restricting the position of the plate spring 26 a in the axial direction 25.

  The stopper 57 has, for example, the legs 46c from both sides in the axial direction 25 so that the distance between the second reinforcement rib 56b and the third reinforcement rib 56d formed in parallel is substantially equal to the width of the foot 46c of the screw fixing portion 46. It can be formed by sandwiching.

  Further, a projection or the like is provided on the bearing 23 as the stopper 57, and the leaf spring 26a is a mirror by restricting at least one of the top 46a, the leg 46b and the foot 46c of the screw fixing portion 46 by the projection. You may position-control so that it may not move to the opposite side to 6. The protrusion is provided on the contact surface of the bearing 23 with respect to the screw fixing portion 46, the inner surface of the third reinforcing rib 56d, or the like. Thus, the position of the plate spring 26 a in the axial direction 25 can be regulated by the stopper 57 via the screw fixing portion 46. Therefore, since the position accuracy of the plate spring 26a is enhanced, a constant pressing force can be exerted so as not to cause the product to be dislocated.

  (8) About mirror 6

  In the mirror support structure 20, the mirror 6 pressed by the elastic member 26 can be, for example, as shown in FIG.

  On the side surface 6 a of the mirror 6, a pressing surface 58 may be provided around the rotation shaft 21 to be pressed by (the resilient pressing pieces 41 and 42 of) the tip of the pressing portion 31. The pressing surface 58 is a surface perpendicular to the axial direction 25. The pressing surface 58 is formed on an end surface (which is a surface opposed to the bearing 23) of the projecting portion 59 provided on the side surface 6 a of the mirror 6 so as to surround the outer periphery of the rotating shaft 21.

  The protrusion 59 and the pressing surface 58 are provided on the side surface 6a of the mirror 6 for the following reason.

  The driving information 3 reflected by the mirror 6 is projected onto the front window 16 and reflected by the front window 16 so as to be viewed by the occupant 7 as a virtual image 18. However, the front window 16 is not a plane perpendicular to the longitudinal direction X, but has a complicated three-dimensional curved surface shape having an inclination or a bend with respect to the longitudinal direction X, the width direction Y, and the vertical direction Z, respectively. . Therefore, if the outer shape of the mirror 6 is made into a simple rectangular shape, distortion will occur on the driving information 3 reflected by the front window 16 instead. Therefore, in order to prevent distortion in the driving information 3 when reflected by the front window 16 located in front of the vehicle 1, the outer shape of the mirror 6 is deformed from a rectangular shape, and the driving information 3 of the front window 16 is Is set to a complex curved surface shape having a non-rectangular outer shape corresponding to the curved surface shape of the portion that reflects.

  Furthermore, since the positional relationship and the angle of the display device 4 with respect to the mirror 6 also cause distortion of the virtual image 18, the mirror 6 is deformed so that the operation information 3 is not distorted even in such a case. .

  Therefore, in the mirror 6, the side surface 6a on which the rotation shaft 21 is provided is not perpendicular to the axial direction 25 but tends to be inclined due to the above-mentioned deformation. However, if the side surface 6a is inclined, the distance between the side surface 6a and the tip of the pressing portion 31 (the elastic pressing pieces 41 and 42) changes when the mirror 6 is rotated. Can not hold down the inclined side surface 6a of the mirror 6 with a constant pressing force.

  Therefore, the pressing surface 58 perpendicular to the axial direction 25 is provided on the side surface 6 a of the mirror 6 so that the pressing surfaces 58 are pressed by the elastic pressing pieces 41 and 42. At this time, the pressing surface 58 perpendicular to the axial direction 25 can be easily formed by forming the projecting portion 59 in a shape having an inclination opposite to the inclination of the side surface 6 a of the mirror 6 (with respect to the mounting direction 28). The projecting portion 59 may be slightly protruded from the side surface 6a of the mirror 6 to the back side if it is a partial (see FIG. 4A). The pressing surface 58 has a portion surrounding the rotation shaft 21 so as to have a width that is greater than or equal to that of the resilient pressing pieces 41 and 42. The pressing surface 58 may be provided on the entire circumference of the rotary shaft 21 or may be provided only at a required angle range covering at least the rotation range of the mirror 6 between the standby position 35 and the use position 34 .

  Thereby, when the mirror 6 is rotated, the distance between the pressing surface 58 and the tip of the pressing portion 31 is always kept constant, so the side surfaces 6a of the mirror 6 are always fixed by the tips of the elastic pressing pieces 41, 42. It becomes possible to continue pressing stably by the pressing force of.

  If the outer shape of the mirror 6 is a simple rectangular shape, the side surface 6 a of the mirror 6 can be used as the pressing surface 58 as it is.

  <Operation> The operation of this embodiment will be described below.

  The head-up display device 2 causes the mirror 6 to reflect the driving information 3 from the display device 4 toward the front of the passenger compartment 1a, thereby generating a virtual image 18 of the driving information 3 in front of the passenger compartment 1a. The driving information 3 can be viewed without causing the occupant 7 driving facing the front to make a large eye movement. At this time, by providing the mirror 6 in the middle of the light path and bending the light path (compared to directing the drive information 3 from the display unit 4 to the front of the vehicle compartment 1a), the drive information 3 from the display unit 4 It is possible to lengthen the light path of and to display the driving information 3 in an enlarged manner. Thus, the head-up display device 2 can achieve distant display of the driving information 3 and a wide angle of view of the driving information 3.

  The mirror 6 is rotatably supported by the mirror support structure 20 so that the angle can be changed between the use position 34 and the standby position 35. The mirror 6 is pressed and urged from the pressing side toward the pressed side by the elastic member 26 in order to prevent the influence of the vehicle vibration. However, the existing mirror support structure 20 does not particularly include a structure that facilitates the assembly of the elastic member 26.

  <Effects> According to this embodiment, the following effects can be obtained.

  (Effect 1) The elastic member 26 is constituted by a plate spring 26a having a half-folded portion (mounting portion 29). As a result, even in a state where the rotary shaft 21 is supported by the bearing 23, the half-folded portion is attached to the bearing 23 in the direction crossing the axial direction 25 from the outer side. On the other hand, the plate spring 26a can be stably attached. As a result, the plate spring 26a can be retrofitted, and the assemblability of the elastic member 26 is improved. At this time, the leaf spring 26a is inserted into the gap 27 between the mirror 6 and the bearing 23 with the pressing portion 31 at one end side, and the mounting portion 32 at the other end is attached to the bearing 23 By pressing in the direction 25, it is possible to remove the influence of vehicle vibration and the like.

  (Effect 2) The plate spring 26a may have a plurality of elastic pressing pieces 41, 42 having different lengths in the pressing portion 31. As a result, the plurality of elastic pressing pieces 41 and 42 can be formed to have optimum lengths, and the positions on both sides of the rotary shaft 21 can be simultaneously pressed by the plurality of elastic pressing pieces 41 and 42 having different lengths. It is In addition, by optimizing the lengths of the plurality of elastic pressing pieces 41 and 42, the position along the side surface 6a of the mirror 6 can be held down, so a portion to be pressed by the elastic pressing pieces 41 and 42 is secured. Therefore, the mirror 6 does not have to be forced to have a thick shape, which is also structurally advantageous for the mirror 6.

  (Effect 2a) The first elastic pressing piece 41 and the second elastic pressing piece 42 have the length setting portion and the elastic pressing portion, and the elastic pressing portions have the same shape. As a result, the first resilient pressing piece 41 and the second resilient pressing piece 42 can be easily set to the optimal length, and the first resilient pressing piece 41 and the second resilient pressing piece 42 are substantially the same. A pressing force can be generated.

  (Effect 3) The leaf spring 26 a may be provided with another elastic pressing piece 43 for pressing and holding the rotating shaft 21 in the pressing portion 31. Thus, the movement of the rotary shaft 21 and the mirror 6 in the mounting direction 28 (radial direction of the rotary shaft 21) can be restricted by another elastic pressing piece 43. That is, the function of restricting the movement of the rotation shaft 21 can be added to the plate spring 26a to make it multifunctional. Further, by pressing and holding the rotating shaft 21 in the mounting direction 28 by another elastic pressing piece 43, even if the impact load acts and the rotating shaft 21 or the mirror 6 is displaced relative to the bearing 23, the rotating shaft 21 And the mirror 6 can be easily returned to the original position.

  (Effect 4) The portion of the pressing portion 31 that presses the mirror 6 may be in non-contact (a separated state) with respect to the bearing 23. As a result, the flat spring 26a is in a cantilever state with respect to the resilient pressing pieces 41 and 42 and the periphery thereof, and the occurrence of friction between the resilient pressing pieces 41 and 42 and the bearing 23 is eliminated. Variation of pressing force can be suppressed and reduced, and the elastic pressing pieces 41 and 42 can always press the mirror 6 stably. Further, by fixing the mounting portion 32 of the plate spring 26a to the bearing 23, and making the portion of the pressing portion 31 pressing the mirror 6 out of contact with the bearing 23, the resilient pressing pieces 41 and 42 and the plate spring 26a are elastic. Since the mounting state is easy to be deformed, when an impact load is applied to the mirror 6, the elastic pressing pieces 41, 42 or the plate spring 26a are elastically deformed to absorb the load, thereby the elastic pressing pieces 41, 42 or the plate spring It is possible to suppress and prevent plastic deformation of 26a.

  (Effect 5) The locking portion 45 may be provided between the bearing 23 and the portion on the side of the folded back portion 33 of the pressing portion 31. Thus, the plate spring 26 a can be more reliably fixed to the bearing 23 by double fixing of the mounting portion 32 to the bearing 23 and locking and fixing of the pressing portion 31 by the locking portion 45. Further, the pressing portion 31 and the folded back portion 33 can be functionally separated by the locking portion 45. Then, the locking portion 45 is provided between the bearing 23 and the portion of the pressing portion 31 on the side of the folding back portion 33, so that when the impact load acts on the mirror 6, the locking portion 45 is detached and the folding back portion By elastically deforming 33, plastic deformation of the plate spring 26a can be prevented. Then, even when the mirror 6 is displaced due to the impact load (with respect to the bearing 23), the mirror 6 can be easily and reliably returned to the original position by locking the detached locking portion 45 again.

  (Effect 6) The mounting portion 32 may be screwed to the bearing 23. Thereby, the leaf spring 26a can be fixed to the bearing 23 more reliably. In addition, when an impact load acts on the mirror 6, it is possible to prevent the plate spring 26a from being detached from the bearing 23 by screw fixing while suppressing and preventing plastic deformation of the plate spring 26a. Therefore, the plate spring 26a can be made strong against impact load.

Reference Signs List 2 head-up display device 6 mirror 6a side surface 20 mirror support structure 21 rotary shaft 23 bearing 25 axial direction 26 elastic member 26a plate spring 27 gap 28 mounting direction 29 mounting portion 31 pressing portion 32 mounting portion 33 folding portion 41, 42 elastic pressing piece 41a, 42a Parallel part (Length setting part)
41b, 42b bent part (elastic pressing part)
41c, 42c inclined part (elastic pressing part)
41d, 42d reverse bending part (elastic pressing part)
41e, 42e return part (elastic pressing part)
43 Another elastic pressing piece 45 Locking part 51b Screw x longitudinal direction y widthwise direction z vertical direction

Claims (7)

A mirror support of a head-up display device installed between a side surface of a mirror and a bearing for pivotally supporting a rotation shaft projecting from the side surface of the mirror and pressing the side surface of the mirror in the axial direction of the rotation shaft In the elastic body,
The elastic body includes a mounting portion attached to the bearing and at least two elastic pressing pieces extending from the mounting portion, and is mounted in a direction intersecting the axial direction.
An elastic body for supporting a mirror of a head-up display device, wherein the pressing portion of the elastic pressing piece presses the side surface of the mirror in the axial direction by straddling the rotation axis. In the mirror support elastic body of the head-up display device according to claim 1,
An elastic body for supporting a mirror of a head-up display device, wherein at least two of the elastic pressing pieces have different lengths. In the mirror-support elastic body of the head-up display device according to claim 1 or 2,
A mirror support for a head-up display device characterized in that the mounting portion and the base of the resilient pressing piece are in contact with the bearing, and the tip of the resilient pressing piece is not in contact with the bearing. For elastic body. The mirror supporting elastic body of the head-up display device according to any one of claims 1 to 3.
The mounting portion includes a locking portion for the axial direction and the mounting direction of the elastic body to the bearing between the mounting portion and the bearing. . The mirror supporting elastic body of the head-up display device according to any one of claims 1 to 4.
The mounting portion includes a fold-up portion that holds the bearing in three directions excluding the end portion side of the elastic body, or includes a folded portion that clamps both sides of the bearing in the axial direction. An elastic body for supporting a mirror of a display device. In the mirror supporting elastic body of the head-up display device according to claim 5,
An elastic body for supporting a mirror of a head-up display device, wherein the mounting portion is fixed to the bearing at least the periphery of the folding back portion. The mirror-support elastic body of the head-up display device according to any one of claims 1 to 6.
The elastic body includes, in the mounting direction, the rotary shaft pivotally supported by the bearing having an opening on the front side in the mounting direction of the elastic body to the bearing, between the plurality of elastic pressing pieces. An elastic body for supporting a mirror of a head-up display device characterized by having another elastic pressing piece for pressing and holding.