JP5507008B2 - Hinge mechanism and in-vehicle display device - Google Patents

Description

  The present invention relates to a hinge mechanism and a vehicle-mounted display device that rotate a display installed on a vehicle-mounted ceiling by its own weight to a predetermined angle.

  Conventionally, a hinge mechanism that rotatably supports a display or the like has a bracket with projections and depressions, and a click washer that rotates integrally with the display and slides on the bracket, and by the elastic force of this click washer, Torque that resists rotation is generated. FIG. 11A is a schematic diagram of a cross section of a bracket 100 and a click washer convex portion 101 constituting a hinge mechanism for a display installed on a conventional vehicle ceiling. As shown in the drawing, when the display is rotated by its own weight from the stored state, the convex portion 101 of the click washer slides from the tapered portion 102 of the bracket 100 toward the bank portion 103, and the convex portion 101 is bent by the click washer. When L is displaced by L, a sliding resistance is obtained at which the display stops.

  On the other hand, as a ceiling-mounted display device installed on the ceiling, the weight of the display causes the passing range from the storage position to the predetermined weight opening angle to rotate and hangs down, and the viewer manually moves from that state. There is one that is rotated to the range of use to make it suitable for viewing. There exists patent document 1 as an example of the hinge mechanism used for such a display apparatus.

  The display device of Patent Document 1 sets different torque characteristics on the left and right sides by changing the shape of the taper portion and bank portion of the bracket between the left hinge portion and the right hinge portion. The torque characteristic is that, in the left hinge portion, a high torque TL is generated at an angle close to the storage position in the passing range from the storage position to the position where the display hangs down, and the use range exceeds the passing range from that angle. The torque TL remains generated until the end. On the other hand, in the right hinge portion, a tapered portion and a bank portion are provided at positions different from the left hinge portion, and torque is generated gradually from an angle closer to the storage position than the torque TL is generated. Thus, the predetermined torque TR is reached when entering the use range. In the usage range, a constant torque TR remains until the end.

  Therefore, as a whole hinge, in the passing range, a certain amount of torque is generated from the initial stage, and the torque gradually increases. At the end of the passing range, it is necessary to hold the display in the viewing posture. Torque (TL + TR) is generated.

Japanese Patent No. 4559816

Since the conventional hinge mechanism is configured as described above, when variations in parts and assembly occur, the positions of the protrusions 101 of the click washer and the bracket 100 as shown in FIG. Even if the relationship is shifted and the convex portion 101 passes over the tapered portion 102 and reaches the bank portion 103, only L1 (L1 <L) is displaced. Therefore, the sliding resistance necessary for the display to be stationary cannot be obtained, and the stationary position is shifted. As described above, due to the variation, there is a problem that the variation in the angle at which the display opens by its own weight becomes large, and the quality is impaired.
In addition, since the torque changes due to metal wear during repeated use, there is also a problem that the opening angle is not stable due to its own weight.

  In addition, in the case of the above-mentioned Patent Document 1, since a high torque TL is always generated at the left hinge portion, the display may not rotate by its own weight depending on the setting of the torque TL. Further, depending on the setting of the torque TR of the right hinge portion, the display may rotate by its own weight to an angle not intended by the viewer. Further, since different torque characteristics are set on the left and right, the display is twisted when the display is rotated, and the quality is impaired.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to suppress variations in the angle at which the display opens by its own weight.

The hinge mechanism according to the present invention is fixed to a rotating member, and is capable of rotating at a first predetermined angle between an initial angle and a self-weight opening angle with respect to the shaft serving as a rotating central axis of the rotating member. It is attached and does not synchronize with the rotation of the rotating member from the initial angle to the first predetermined angle, and generates torque that resists the rotation of the rotating member by synchronizing with the rotating member from the first predetermined angle. The first torque generator and the shaft attached to the shaft rotate in synchronization with the rotation member, and when the second predetermined angle between the first predetermined angle and the self-weight opening angle is exceeded, the rotation of the rotation member and a second torque generating unit to produce a torque resisting movement, the first torque generating unit is the first predetermined angle produce first torque, by its own weight to open angle the first torque greater than the second torque And the second torque generating part has a rotating member close to its own weight opening angle. It is obtained so as to produce a third torque gradually increased in accordance with the Kunitsure rotation angle.

  The in-vehicle display device of the present invention uses the hinge mechanism described above to connect the display to a housing fixed to the ceiling of the vehicle, and has a predetermined weight from the initial angle when the display is housed in the housing. The display is rotated by its own weight up to the opening angle.

  According to the present invention, after the display rotating with its own weight is sufficiently decelerated by the first torque generated by the first torque generating unit and the third torque generated by the second torque generating unit, the first torque By generating the second torque at the generating portion and reliably stopping it, variations in the angle at which the display opens with its own weight can be suppressed.

It is a perspective view which shows the structure of the ceiling-mounted vehicle-mounted display apparatus using the hinge mechanism which concerns on Embodiment 1 of this invention, and shows an accommodation state. It is a perspective view which shows the structure of the ceiling-mounted vehicle-mounted display apparatus using the hinge mechanism which concerns on Embodiment 1, and shows the self-weight open state. It is a perspective view which shows the structure of the ceiling-mounted vehicle-mounted display apparatus using the hinge mechanism which concerns on Embodiment 1, and shows a viewing-and-listening state. 3 is a perspective view showing a configuration of a hinge mechanism according to Embodiment 1. FIG. 3 is an exploded perspective view showing a configuration of a hinge mechanism according to Embodiment 1. FIG. It is a figure which shows operation | movement of the click plate and display of a hinge mechanism which concerns on Embodiment 1. FIG. It is a figure which shows operation | movement of the sliding plate and display of a hinge mechanism which concern on Embodiment 1. FIG. It is sectional drawing which cut | disconnected the hinge mechanism which concerns on Embodiment 1 along the AA line and BB line which are shown to Fig.6 (a). 6 is a graph showing torque generated in accordance with the rotation of the display in the first embodiment. It is a figure which shows the modification of the hinge mechanism which concerns on Embodiment 1. FIG. It is a schematic diagram of the cross section of the bracket and click washer which comprise the conventional hinge mechanism.

Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
The case where the hinge mechanism according to the first embodiment is used to rotate a display (rotating member) from / into a housing (fixing member) installed on the vehicle ceiling will be described as an example. The ceiling-mounted in-vehicle display device 1 shown in FIG. 1 is in a state in which a display 2 is housed in a housing 4 fixed to a vehicle ceiling. Two hinge mechanisms 10 having the same structure are attached to both ends of one side of the display 2 and support the display 2 so as to be rotatable with respect to the housing 4.

  FIG. 2 shows a state in which the display 2 rotates by its own weight and stops at its own weight opening angle, and FIG. 3 shows a state in which the display 2 is held at an angle at which the viewer can view. In order to change the display 2 of the in-vehicle display device 1 from the housed state shown in FIG. 1 to the viewing state shown in FIG. 3, the viewer presses the release button 3 provided on the housing 4, so that the release button 3 The locking member 5 is rotated in conjunction with this, and the engagement with the holding recess 6 of the display 2 is disengaged, and the display 2 rotates by its own weight with the two hinge mechanisms 10 as axes. Thereafter, when the viewer presses the tip side of the display 2 by hand, the display 2 is rotated to a position where the display screen 7 faces the viewer side and is easy to view as shown in FIG.

Next, the hinge mechanism 10 will be described.
4 is a perspective view of the hinge mechanism 10, and FIG. 5 is an exploded perspective view of the hinge mechanism 10. The hinge mechanism 10 includes a shaft 20 serving as a rotation center axis of the display 2, a sliding plate (first torque generation unit) 40 that is attached to the shaft 20 and rotates, and a click plate (second torque generation unit). 50 and a flat washer 60, and a bracket 30 fixed to the housing 4. In the following description, the side near the center of the display 2 along the rotation center axis is referred to as the inside, and the side far from the center of the display 2 is referred to as the outside.

On one end side of the shaft 20, a flange portion 21 having a diameter larger than the diameter of the rotation shaft hole 31 opened in the bracket 30, and a diameter slightly smaller than the diameter of the rotation shaft hole 31 on the tip side, and a side surface A medium-diameter portion 22 having a shaft groove 23 formed thereon, and a small-diameter portion 24 having a smaller diameter than the medium-diameter portion 22 at the distal end side and two plane cuts on the side surface. The axial length of the medium diameter portion 22 is slightly longer than the combined thickness of the bracket 30 and the sliding plate 40, and the axial length of the small diameter portion 24 is clicked. The plate thickness of the plate 50 and the plate thickness of the flat washer 60 are longer than the total thickness.
The display 2 is fixed to the other end of the shaft 20.

A sliding plate 40 is inserted on the inner diameter portion 22 of the shaft 20 and a bracket 30 is inserted on the outer side. A click plate 50 is inserted on the inner side of the small diameter portion 24 and a flat washer 60 is inserted on the outer side.
The plate shaft hole 43 of the sliding plate 40 has an arc having a diameter slightly larger than the diameter of the medium diameter portion 22, a slightly smaller depth than the radial depth of the shaft groove 23, and the circumferential width of the shaft groove 23. Since the protrusion 42 and the shaft groove 23 are engaged with each other with play, the sliding plate 40 rotates with a certain angle with respect to the shaft 20. It is possible to move. The sliding plate 40 is made of a metal elastic body, and a sliding convex portion (second convex shape) 41 for generating torque by sliding on the bracket 30 on its outer peripheral portion, and a resistive convex portion (first convex portion). ) 44). In addition, the sliding convex part 41 is provided in the one side centering on the plate axial hole 43, and the resistance convex part 44 is provided in the other side.

  The bracket 30 is fastened to the housing 4 by screws (not shown), and rotatably supports the shaft 20 inserted into the rotation shaft hole 31. Therefore, the display 2 is rotatable with respect to the housing 4. In addition, the bracket 30 has a storage recess (second concave shape) on a path around which the click convex portion (third convex shape) 51 of the click plate 50 slides on the circumference around the shaft 20. ) 33, a taper portion 34, and click recesses 35 a and 35 b, and on a path centering on the rotation center axis and on which the sliding convex portion 41 of the sliding plate 40 slides. In addition, a convex relief hole (first concave shape) 32 is provided. Details of these uneven shapes will be described later.

  The shaft insertion hole 52 of the click plate 50 is a hole having an area slightly larger than the cross section of the small diameter portion 24 so that the click plate 50 and the shaft 20 rotate together. The click plate 50 is made of a metal elastic body, and a click convex portion 51 for generating a torque by sliding on the bracket 30 and engaging with the click concave portions 35a and 35b at the tip thereof. Is provided.

  The flat washer 60 is provided with a caulking hole 61 having an area slightly larger than the cross section of the small diameter portion 24, and the flat washer 60 and the shaft 20 are integrally formed by caulking and fixing the tip of the shaft 20 and the flat washer 60. Will be rotated. The plain washer 60 and the flange portion 21 of the shaft 20 hold the sliding plate 40, the bracket 30 and the click plate 50.

  Note that when the click plate 50 that is a metal elastic body is caulked to the shaft 20, stress may be concentrated on the caulked portion when the click plate 50 is bent. The flat washer 60 is caulked to the shaft 20 so that stress is not concentrated on the caulked portion. Further, since the flat washer 60 serves as a presser when the click plate 50 is bent, the spring constant of the click plate 50 is increased and a high load can be obtained. However, depending on the configuration of the hinge mechanism 10, the plain washer 60 may be omitted and the click plate 50 may be caulked and fixed to the tip of the shaft 20.

Next, details of the uneven shape of the hinge mechanism 10 will be described.
The convex relief hole 32 is a hole for the sliding convex portion 41 of the sliding plate 40 to enter while the display 2 rotates from the storage angle (FIG. 1) to the self-weight opening angle (FIG. 2).
The storage recess 33 is a recess for the click projection 51 of the click plate 50 to enter when the display 2 is at the storage angle. A taper portion 34 for the click convex portion 51 to contact is provided in the rotation direction of the click plate 50 of the storage concave portion 33. As the positional relationship of these concavo-convex shapes, the click convex portion 51 of the click plate 50 is accommodated in the storage concave portion 33 until the sliding convex portion 41 of the sliding plate 40 enters the convex portion relief hole 32 and abuts against the edge portion. When the sliding projection 41 abuts against the edge of the convex relief hole 32, the click convex portion 51 is slightly over the apex of the tapered portion 34. I have to. Further, the resistance convex portion 44 of the sliding plate 40 is always in contact with the surface of the bracket 30 so as to slide.

The click recesses 35a and 35b are recesses for holding the posture of the display 2 by the click protrusion 51 of the click plate 50 entering when the display 2 is at the viewing position (FIG. 3). The positions where the click recesses 35a and 35b are provided may be at an angle at which the viewer can easily view the display 2, and the angle at which the viewer can easily view differs depending on the viewer. In the first embodiment, the storage angle of the display 2 is 0 °, and two click recesses 35a and 35b are provided so that the display 2 can be opened and held at angles of 100 ° and 120 °.
In the illustrated example, in order to increase the holding force of the display 2 due to the fitting of the click convex portion 51 and the click concave portions 35a and 35b, the periphery of the click concave portions 35a and 35b is raised one step to form a bank portion.

  Further, the sliding plate 40 and the click plate 50 are arranged at positions where the bracket 30 is sandwiched from both sides so as to slide on the respective surfaces. Thereby, it is possible to prevent the bracket 30 from being deformed by the pressing force of the sliding plate 40 and the click plate 50, eliminate the escape of force generated between the bracket 30 and the stable torque.

Next, the operation of the hinge mechanism 10 will be described.
FIG. 6 is a diagram illustrating the operation of the click plate 50 and the display 2 of the hinge mechanism 10. In FIG. 6, the illustration of the plain washer 60 is omitted. FIG. 7 is a diagram illustrating the operation of the sliding plate 40 of the hinge mechanism 10 and the display 2. In FIG. 7, the illustration of the click plate 50 and the flat washer 60 is omitted. FIG. 8 is a cross-sectional view of the hinge mechanism 10 cut along the lines AA and BB shown in FIG.
6A to 8C correspond to the same display position, and FIGS. 6A, 7A, and 8A show that the display 2 is the housing 4. 6 (b), FIG. 7 (b) and FIG. 8 (b) are states in the middle of the display 2 being rotated from its stored state by its own weight, FIG. 6 (c) and FIG. 7 (c) and FIG. 8 (c) show a self-weight opening state in which the display 2 is rotated by its own weight, and FIGS. 6 (d) and 7 (d) show viewing in which the display 2 is further rotated from its own weight opening state. Indicates the state.
9 is a graph of torque generated according to the rotation angle of the display 2. FIG. 9A is a sliding resistance torque value generated by the click plate 50, and FIG. Is a sliding resistance torque value generated by.

When the display 2 of the in-vehicle display device 1 attached to the ceiling in the vehicle is in the storage state shown in FIG. 1, as shown in FIGS. 6 (a) and 8 (a), the click convex portion of the click plate 50 Reference numeral 51 denotes a state where it enters the storage recess 33 of the bracket 30, and the click protrusion 51 does not contact the bracket 30. When the display 2 is rotated by θ3 ° (second predetermined angle) in the opening direction, the click convex portion 51 comes into contact with the tapered portion 34. Therefore, the click plate 50 does not bend and does not generate torque during the storage angle of 0 ° to θ3 °.
Further, as shown in FIGS. 7A and 8A, the sliding convex portion 41 of the sliding plate 40 is in an edge portion in the storage direction of the display 2 in a state of entering the convex relief hole 32 of the bracket 30. 36, the sliding projection 41 is in a position where it does not come into contact with the other edge 37 until the display 2 is rotated by θ2 ° in the opening direction. Further, the protruding portion 42 of the sliding plate 40 is brought close to one groove wall 26 of the shaft groove 23 of the shaft 20, and the protruding portion 42 is rotated until the display 2 is rotated by θ1 ° (first predetermined angle) in the opening direction. Is in a position where it does not contact the other groove wall 25. Furthermore, since the resistance convex portion 44 of the sliding plate 40 is in pressure contact with the surface of the bracket 30, the sliding plate 40 does not rotate due to vibration or the like.

When the viewer presses the release button 3 on the housing 4 in order to change the display 2 from the storage state to the viewing state, the lock member 5 holding the display 2 is released from the holding recess 6 and the display 2 is moved by its own weight. Begins turning in the opening direction.
At this time, in the hinge mechanism 10, the shaft 20 fixed to the display 2 and the click plate 50 fixed to the shaft 20 start to rotate in synchronization. On the other hand, the sliding plate 40 has a rotation tolerance of θ1 °, and the resistance convex portion 44 is pressed against the bracket 30 to cause sliding resistance, so that the sliding plate 40 does not synchronize with the shaft 20.
In this state, as shown in FIG. 9, no torque is generated in the hinge mechanism 10 until the display 2 rotates by θ1 °, and therefore the display 2 starts to rotate by its own weight. At this time, the rotation speed is accelerated by gravity.

Thereafter, when the rotation angle of the display 2 reaches θ1 °, the groove wall 25 of the shaft groove 23 of the shaft 20 contacts the protruding portion 42 of the sliding plate 40 as shown in FIG. At this time, as shown in FIGS. 6B and 8B, the click plate 50 rotates in synchronization with the display 2, but the click convex portion 51 is in front of the tapered portion 34 of the bracket 30 (storage concave portion). 33) and has not yet contacted.
In FIG. 8B, when the rotation angle θ1 °, the click convex portion 51 is located at the switching portion from the storage concave portion 33 to the tapered portion 34. However, the click convex portion 51 contacts the tapered portion 34. Any position may be used as long as it is in contact.

When the rotation angle of the display 2 exceeds θ1 °, the shaft 20 and the sliding plate 40 start to rotate synchronously as shown in FIGS. 7B and 7C. And since the resistance convex part 44 of the sliding plate 40 slides on the bracket 30, as shown in FIG.9 (b), the torque T1 (1st torque) by the resistance convex part 44 from the time of exceeding (theta) 1 degree. Occurs.
At this time, as shown in FIG. 6B, the click convex portion 51 of the click plate 50 has not yet contacted the taper portion 34 of the bracket 30, so that the display 2 of the sliding plate 40 is shown in FIG. Only the sliding resistance of the torque T1 generated by the resistance convex portion 44 is received and rotated. However, since the torque T1 is smaller than the rotation torque T that rotates due to the weight of the display 2, the rotation due to the weight of the display 2 does not stop, but the angular acceleration is small.

When the rotation angle of the display 2 exceeds θ1 ° and becomes θ3 °, the click convex portion 51 of the click plate 50 comes into contact with the tapered portion 34 of the bracket 30, and when it exceeds θ3 °, the click convex portion 51 becomes the tapered portion 34. And the click plate 50 begins to bend. For this reason, as shown in FIG. 9A, a torque (third torque) that gradually increases is generated by the click plate 50 from the time when θ3 ° is exceeded, and the rotation speed of the display 2 is reduced as the maximum torque T3 is approached. To do.
When the rotation angle of the display 2 becomes θ1 ° + θ2 °, as shown in FIGS. 6C, 7C, and 8C, the sliding convex portion 41 of the sliding plate 40 is attached to the bracket. The torque T2 (second torque) is generated by abutting the edge 37 of the 30 convex relief holes 32, so that the torque generated in the sliding plate 40 is T1 + T2, as shown in FIG. The rotation of the display 2 that has started to decelerate completely stops and enters its own weight open state.

The rotation torque T of the display 2 is a torque value that cannot be stopped only by the sliding resistance of the torque T3, and is a torque value that the display 2 decelerates by combining the torque T3 and the torque T1.
Further, in the description, when the sliding convex portion 41 comes into contact with the edge portion 37 of the convex portion relief hole 32, the click convex portion 51 is positioned slightly over the apex of the tapered portion 34, so that FIG. As described above, the torque T3 is maximized before θ1 ° + θ2 °. However, the present invention is not limited to this, and the torque T3 is maximized after or equal to θ1 ° + θ2 °. Also good.

Thereafter, the viewer presses and rotates the display 2 in a stationary state with its own weight opening angle, and opens the viewing position. The force required for this rotation is the torque T1 generated by the resistance convex portion 44 of the sliding plate 40 and the edge of the convex portion relief hole 32 of the bracket 30 by deflecting the sliding convex portion 41 of the sliding plate 40. The torque T2 required for sliding out of the bracket 30 and sliding on the bracket 30 and the torque T3 required for sliding the click plate 50 are not less than the combined torque.
When the click plate 50 slides on the bracket 30 in synchronization with the rotation of the display 2 and the click convex portion 51 is fitted into the click concave portion 35a, the display 2 is fitted by the fitting between the click convex portion 51 and the click concave portion 35a. The storage angle is held at a position opened from 0 ° to 100 °. When the viewer further rotates the display 2, the click convex portion 51 comes out of the click concave portion 35a and fits into the adjacent click concave portion 35b. As shown in FIGS. 6 (d) and 7 (d), the click convex portion The display 2 is held at a position opened from a storage angle of 0 ° to 120 ° by fitting the portion 51 and the click recess 35b.

  Note that the torque T2 generated when the sliding convex portion 41 slips out of the convex relief hole 32 and slides the bracket 30 is set to be equal to or greater than the value at which the sliding resistance is lost due to component variations and assembly variations. . As a result, even if the torque T3 generated in the click plate 50 is reduced due to component variations and assembly variations, the display 2 can be surely stopped at a predetermined self-weight opening angle by the torque T2.

As described above, according to the first embodiment, the hinge mechanism 10 includes the sliding plate 40 and the click plate 50 that generate torque that resists the rotation of the display 2 by its own weight, and the sliding plate 40 has a predetermined angle θ1 °. The torque T1 is generated at the moment, the torque T2 larger than the torque T1 is generated at the own weight opening angle θ1 ° + θ2 °, and the click plate 50 has the own weight opening angle θ1 ° from the time when the display 2 exceeds the predetermined angle θ3 ° (> θ1 °). As it approaches + θ2 °, the torque is gradually increased to generate torque T3. Therefore, the torque T1 generated by the sliding plate 40 and the torque T3 generated by the click plate 50 sufficiently decelerates the display 2 that rotates by its own weight, and then the torque T2 is generated by the sliding plate 40 to be surely stationary. Can be made. Therefore, the variation in the angle at which the display 2 opens with its own weight can be suppressed, and the quality can be improved.
Further, the torque T2 required to bend the sliding projection 41 of the sliding plate 40 and get out of the projection relief hole 32 of the bracket 30 has a sliding resistance due to component variations, assembly variations, metal wear, and the like. Since the value is set to be greater than the lost value, even if the torque T3 becomes small due to component variations or the like, the display 2 can be surely stopped at the self-weight opening angle by the torque T2.

  In addition, according to the first embodiment, the hinge mechanism 10 includes the shaft 20 that is fixed to the display 2 and serves as a rotation center axis, and the sliding plate 40 is rotatable with respect to the shaft 20 by a predetermined angle θ1 °. It is attached and does not synchronize with the rotation of the display 2 from the storage angle 0 ° to the predetermined angle θ1 °, and rotates in synchronism with the display 2 from the predetermined angle θ1 ° to generate the torques T1 and T2. Is attached to the shaft 20 and rotated in synchronization with the display 2, and is configured to generate a torque T3 that increases in accordance with the rotation angle when a predetermined angle θ3 ° is exceeded. As a result, the sliding plate 40 and the click plate 50 are attached to the same shaft 20 and rotate synchronously, so that the assembly variation is reduced, and as a result, the opening angle variation due to the weight of the display 2 is also reduced. Less.

  Further, according to the first embodiment, the hinge mechanism 10 includes the bracket 30 that is fixed to the housing 4 and rotatably supports the shaft 20 through the shaft 20, and the sliding plate 40 and the click plate 50 include the bracket Since the elastic member is arranged at a position to sandwich the 30 from both sides and generates torque by sliding on the bracket 30, the pressing force of the sliding plate 40 and the click plate 50 is offset by sandwiching the bracket 30. Is difficult to deform. Therefore, the escape of force due to the deformation of the bracket 30 can be eliminated, and a stable torque can be generated.

  In addition, according to the first embodiment, the in-vehicle display device 1 has the same torque characteristics on the left and right since the hinge mechanism 10 is attached to both ends of the display 2 and is connected to the housing 4. It becomes difficult to twist during rotation. Therefore, the quality at the time of rotation can be improved.

  In addition, according to the first embodiment, the sliding plate 40 slides on the bracket 30 when rotating in synchronization with the display 2, and the resistance convex portion 44 generates the torque T <b> 1. When the storage angle is 0 °, it enters the convex relief hole 32 of the bracket 30 and does not generate torque. When it rotates in synchronism with the display 2, it moves to the edge 37 of the convex relief hole 32. It has the structure which has the sliding convex part 41 which contact | abuts and produces the torque T2. For this reason, the sliding plate 40 can generate a plurality of torques including 0 in a stepwise manner, and the intended rotation control can be reliably performed at the torque switching angle.

  Further, according to the first embodiment, the click plate 50 enters the storage recess 33 of the bracket 30 when the storage angle is 0 ° and does not generate torque. It has a configuration having a click convex portion 51 that moves and generates a gradually increasing torque T3. For this reason, no torque is generated not only in the sliding plate 40 but also in the click plate 50 at the storage angle 0 °. Therefore, the display 2 is reliably rotated from the storage angle 0 ° by its own weight, and the self-weight opening angle θ1 ° + θ2 As the angle approaches, the display 2 can be slowly decelerated to improve the quality.

  In the first embodiment, the rotation of the display 2 due to its own weight is caused by the sliding resistance (T3) between the tapered portion 34 of the bracket 30 and the click convex portion 51 of the click plate 50, and the sliding of the sliding plate 40. After sufficiently decelerating with the resistance (T1), the sliding protrusion 41 of the sliding plate 40 is brought into contact with the protruding part relief hole 32 of the bracket 30 to be surely stopped. Although the portion 51 is configured to be stationary when it passes over the taper portion 34 of the bracket 30 (the torque T3 reaches the maximum value in the vicinity of θ1 ° + θ2 ° as shown in FIG. 9), the click convex portion 51 becomes the taper portion 34. It may be configured to stop before getting over (unlike FIG. 9, it reaches θ1 ° + θ2 ° after the torque T3 becomes maximum). Specifically, the amount of deflection of the click plate 50 may be increased by increasing the spring constant of the click plate 50 or making the tapered portion 34 steeply inclined. As a result, as the display 2 approaches the self-opening angle, the rotation speed can be reduced and the display 2 can be brought to a standstill, and the display 2 can be stopped only by the sliding resistance (T3) of the click plate 50. Even if not, the sliding convex portion 41 can be brought into contact with the edge portion 37 of the convex portion relief hole 32 to be surely stopped at a predetermined self-weight opening angle.

In the first embodiment, as shown in FIG. 7, a gap is formed between the shaft groove 23 of the shaft 20 and the protruding portion 42 of the sliding plate 40, so that the storage angle is 0 ° to a predetermined angle θ1 °. Although the sliding plate 40 is configured not to synchronize with the rotation of the display 2, it is not limited to this. FIG. 10 shows a modification of the hinge mechanism 10.
10A shows a storage state in which the display 2 is stored in the housing 4, and FIG. 10B shows a state in the middle of the display 2 being rotated from its storage state by its own weight. The click plate 50 and the flat washer 60 are not shown. In this example, the straight portion 27 is formed by performing a plane cut on the medium diameter portion 22 of the shaft 20, and a gap is formed in the plate shaft hole 43 of the other sliding plate 40 while maintaining the same shape as the cross section of the medium diameter portion 22. A bent straight portion 45 is formed. In the case of this configuration, the same performance can be expected with a simple structure.

  In addition to the above, within the scope of the invention, the invention of the present application can be modified with any component of the embodiment or omitted with any component of the embodiment.

  DESCRIPTION OF SYMBOLS 1 In-vehicle display apparatus, 2 Display (rotating member), 3 Release button, 4 Housing | casing (fixing member), 5 Lock member, 6 Holding recessed part, 7 Display screen, 10 Hinge mechanism, 20 Shaft, 21 Flange part, 22 Medium diameter part, 23 Shaft groove, 24 Small diameter part, 25, 26 Groove wall, 27 Straight part, 30 Bracket, 31 Rotating shaft hole, 32 Convex part relief hole (first concave shape), 33 Storage concave part (second Concave), 34 taper, 35a, 35b click recess, 36, 37 edge, 40 sliding plate (first torque generator), 41 sliding convex (second convex), 42 protruding, 43 Plate shaft hole, 44 Resistance convex portion (first convex shape), 45 Straight portion, 50 Click plate (second torque generating portion), 51 Click convex portion (third convex shape) ), 52 the shaft insertion hole, 60 flat washer 61 caulking hole.

Claims (6)

Connecting the fixing member and the rotating member, said rotating member, a hinge mechanism for rotating by its own weight from the initial angle held by the fixing member to its own weight opening angle of the Jo Tokoro with respect to the fixed member ,
A shaft fixed to the rotating member and serving as a rotation central axis of the rotating member;
It is attached to the shaft so as to be able to rotate at a first predetermined angle between the initial angle and the self-opening angle, and is not synchronized with the rotation of the rotating member from the initial angle to the first predetermined angle. A first torque generating unit that generates torque that resists rotation of the rotating member by its own weight in synchronization with the rotating member from the first predetermined angle ;
The rotating member is attached to the shaft and rotates in synchronization with the rotating member, and resists rotation of the rotating member by its own weight when a second predetermined angle between the first predetermined angle and the self-weight opening angle is exceeded. and a second torque generating unit to produce a torque,
The first torque generating unit generates a first torque at the first predetermined angle, generates a second torque larger than the first torque at the self-weight opening angle,
The hinge mechanism, wherein the second torque generating section generates a third torque that gradually increases in accordance with a rotation angle as the rotation member approaches the self-weight opening angle. A bracket fixed to the fixing member and rotatably supported by inserting the shaft,
First torque generating unit and the second torque generating portion is disposed at a position sandwiching the bracket from opposite sides, according to claim 1, wherein the upper said bracket is an elastic member to produce torque slides Hinge mechanism. The bracket has a first concave shape on the circumference around the shaft,
The first torque generating portion is a first convex shape that slides on the bracket to generate a first torque when rotating in synchronization with the rotating member, and the first convex shape Formed at different positions, and at the initial angle, it enters the first concave shape of the bracket and does not generate torque. When it rotates in synchronization with the rotating member, it contacts the edge of the first concave shape. The hinge mechanism according to claim 2 , further comprising: a second convex shape that generates a second torque. The bracket has a second concave shape on a circumference centered on the shaft, and a tapered portion formed at an edge of the second concave shape,
The second torque generating portion enters the second concave shape of the bracket at the initial angle and does not generate torque. When the second torque generating portion rotates in synchronization with the rotating member, the second torque generating portion slides on the tapered portion to move to the third angle. The hinge mechanism according to claim 2 , wherein the hinge mechanism has a third convex shape that generates torque.   2. The hinge mechanism according to claim 1, wherein both ends of the rotating member are respectively connected to the fixed member, and each of the connecting portions includes a first torque generating portion and a second torque generating portion. An in-vehicle display device using the hinge mechanism according to claim 1,
The hinge mechanism connects the display to a housing fixed to the ceiling of the vehicle, and rotates the display with its own weight from an initial angle in a state where the display is housed in the housing to a predetermined opening weight of the own weight. A vehicle-mounted display device.

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