JP2015171855A - Ottoman device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To set a top board for supporting a calf of a seated person more surely on a position corresponding to the calf, in an ottoman device.SOLUTION: An ottoman device 10 includes a rear end top board 20, a middle top board 30 and a front end top board 40. The middle top board 30 is positioned on the outermost side between three top boards 20, 30, 40. The middle top board 30 can be set more surely on a position corresponding to a calf of a seated person by expanding/contracting the middle top board 30 with respect to the rear end top board 20.

Description

  The present invention relates to an ottoman device.

  2. Description of the Related Art Conventionally, a configuration in which an ottoman device for placing a seated person's foot on a vehicle seat is known. For example, in the ottoman device described in Patent Document 1, the rear end top plate is formed integrally with the seat. A cushion for supporting the seated person's calf is formed on the upper surface of the rear end top plate. An intermediate top plate is installed to be extendable with respect to the rear end top plate, and a front end top plate is installed to be extendable with respect to the intermediate top plate.

JP 2005-518985 A

In the configuration of Patent Document 1, the position of the top plate that supports the occupant's calf and the cushion formed on the upper surface thereof cannot be adjusted according to the physique of the occupant.
The present invention has been made in view of such circumstances, and an object of the present invention is to provide an ottoman device that can more reliably place a top plate that supports a calf of a seated person in a position corresponding to the calf. It is in.

Hereinafter, means for achieving the above-described object and its operation and effects will be described.
An ottoman device that solves the above-mentioned problem is arranged on the outer side with respect to the rear end top plate supported by the seating portion of the seat and the rear end top plate, and can support the calf of the seated person on the seat An intermediate top plate that is supported to be extendable with respect to the rear end top plate, and a front end top plate that is disposed inside the intermediate top plate and is supported to be extendable with respect to the intermediate top plate, It has.

  According to this configuration, the ottoman device includes the rear end top plate, the intermediate top plate, and the front end top plate. Of these three top plates, the intermediate top plate is located on the outermost side. By extending and contracting the intermediate top plate with respect to the rear end top plate, the intermediate top plate can be more reliably positioned at a position corresponding to the seated person's calf.

  For the ottoman device, a first slide part that enables sliding movement along the expansion / contraction direction of the front end top plate with respect to the intermediate top plate, and a slide along the expansion / contraction direction of the intermediate top plate with respect to the rear end top plate A second slide part that enables movement; and a bracket that connects the first and second slide parts and that is fixedly connected to the rear end top plate, the bracket including the extension and contraction A first wall portion provided with the first slide portion and a second slide portion extending in the height direction and extending in a height direction orthogonal to the direction. A second wall portion, and a connecting portion that is connected to the height direction of the first and second wall portions and that is formed over the entire area of the bracket along the expansion and contraction direction. It is preferable to prepare .

  According to this structure, the connection part connects the edge part of the height direction in a 1st and 2nd wall part, and is formed over the whole region of a bracket along an expansion-contraction direction. For this reason, the whole area | region of a connection part receives the weight of a front-end | tip top plate. Therefore, the bending etc. of a bracket can be suppressed.

  About the said ottoman apparatus, it is preferable to provide the link which hold | maintains the said rear end top plate with respect to the said seating part from the inner side, and it is preferable that the said rear end top plate is provided inside the said front end top plate.

  According to this configuration, the rear end top plate is held against the seating portion by the link from the inside. And the back end top plate is provided inside the front end top plate. Thus, by providing the rear end top plate on the innermost side, a space for providing a link or the like can be easily secured.

The ottoman device preferably includes a transmission mechanism that preferentially extends the tip top plate with respect to the intermediate top plate.
According to this configuration, the transmission mechanism preferentially extends the tip top plate with respect to the intermediate top plate. For this reason, the extension of the intermediate top plate can be continued even after the tip top plate is extended to such an extent that the seated person's heel can be placed. By continuing the extension of the intermediate top plate, the intermediate top plate can be adjusted to a position corresponding to the calf of the seated person.

  The ottoman device includes one motor, and the transmission mechanism transmits the tip top plate by a predetermined distance with respect to the intermediate top plate when the motor is driven for a predetermined time. A mechanism, and an intermediate top plate transmission mechanism that moves the intermediate top plate by a distance smaller than the predetermined distance with respect to the rear end top plate when the motor is driven for the predetermined time. preferable.

  According to this configuration, the driving force of one motor is transmitted to the tip top plate transmission mechanism and the intermediate top plate transmission mechanism. Through these transmission mechanisms, the moving distance of the front top plate relative to the intermediate top plate when the motor is driven for a certain time can be made larger than the moving distance of the intermediate top plate relative to the rear end top plate. Accordingly, the intermediate top plate can be adjusted to a position corresponding to the calf of the seated person with one motor, that is, a simple configuration.

  With regard to the ottoman device, the tip top plate transmission mechanism rotates in a certain direction to move the tip top plate in one of the telescopic directions, and the tip top plate has reached a specific position. After that, when the rotation in the constant direction continues, the pinion is idled with respect to the tip top plate, and from this state, the pinion is rotated in the direction opposite to the constant direction, thereby the tip top ceiling. It is preferable to include a ratchet mechanism that enables the plate to move in the other direction of the expansion / contraction direction.

  According to this configuration, for example, after the tip top plate moves in the extending direction and reaches a specific position, when the pinion continues to rotate in a certain direction, the pinion is idled through the ratchet mechanism. To do. Further, by rotating the pinion from this state in the direction opposite to the fixed direction, the tip top plate can be moved in the contraction direction. As described above, by providing the ratchet mechanism, the extension or contraction of the intermediate top plate can be continued even after the extension or contraction of the tip top plate is completed.

About the said ottoman apparatus, it is preferable to install the said motor in the said intermediate | middle top plate.
According to this configuration, the motor is installed in the intermediate top plate. Here, the front top plate transmission mechanism is provided between the intermediate top plate and the front top plate, and the intermediate top plate transmission mechanism is provided between the intermediate top plate and the rear top plate. Thus, by providing the motor on the intermediate top plate, the intermediate top plate transmission mechanism and the front top plate transmission mechanism can be configured more compactly in the telescopic direction.

  According to the present invention, in the ottoman device, the top plate that supports the calf of the seated person can be positioned more reliably corresponding to the calf.

The perspective view of an ottoman apparatus. The perspective view of an ottoman apparatus in the state without each top plate. Sectional drawing of an ottoman apparatus. Schematic of the transmission mechanism built in the ottoman device. The side view of a rack, a pinion, and a ratchet mechanism. The perspective view of the ottoman apparatus of the state in which the intermediate | middle top plate and the front end top plate were accommodated. Explanatory drawing of the state where the seated person sat down.

Hereinafter, an embodiment of an ottoman device will be described with reference to FIGS.
<Configuration>
As shown in FIG. 1, the ottoman device 10 includes a rear end top plate 20, an intermediate top plate 30, and a front end top plate 40. Each top plate 20, 30, 40 has a shape in which both ends in the width direction W (longitudinal direction of this rectangle) in a rectangular plate shape are bent downward. The intermediate top plate 30 is formed with a size capable of including the front end top plate 40, and the front end top plate 40 is formed with a size capable of including the rear end top plate 20. A cushion 30 a is provided on the upper surface of the intermediate top plate 30. The intermediate top plate 30 and the front top plate 40 are formed in the same size in the expansion / contraction direction L, which is the direction in which the top plates 30 and 40 expand and contract.

  As shown in FIG. 2, the ottoman device 10 includes upper rails 31, 32, lower rails 21, 41, a link 23, and a bracket 45 inside each top plate 20, 30, 40. The lower rail 41 and the upper rail 31 are an example of a first slide part, and the lower rail 21 and the upper rail 32 are an example of a second slide part.

  As shown in FIG. 3, a pair of lower rails 21, 41 are provided at positions that extend in the expansion / contraction direction L and that face each other in the width direction W. That is, the lower rail 21 is formed in a concave shape that opens outward in the width direction W, and the lower rail 41 is formed in a concave shape that opens inward in the width direction W.

  A pair of upper rails 31, 32 are provided at positions extending in the expansion / contraction direction L and facing each other in the width direction W. That is, the upper rail 31 is formed in a concave shape that opens outward in the width direction W, and the upper rail 32 is formed in a concave shape that opens inward in the width direction W. And the upper rail 31 is located in the lower rail 41 so that a slide to the expansion-contraction direction L is possible. Similarly, the upper rail 32 is positioned in the lower rail 21 so as to be slidable in the expansion / contraction direction L.

  A pair of brackets 45 are provided at positions extending in the expansion / contraction direction L and facing the width direction W, respectively. Each bracket 45 is formed in a substantially U shape that opens upward in the height direction H (the direction perpendicular to the width direction W and the expansion / contraction direction L). Specifically, the bracket 45 includes a pair of wall portions 45a and 45b extending in the height direction H, and a connecting portion 45c for connecting the wall portions 45a and 45b at the lower end portions in the height direction H. .

  The first wall 45a is located outside the second wall 45b. The upper rail 32 is fixed to the inner surface of the second wall portion 45b. The upper rail 31 is fixed to the outer surface of the first wall 45a. Each bracket 45 is formed in substantially the same cross-sectional shape.

  As shown in FIG. 2, the link 23 is positioned between the seating portion 61 and the ottoman device 10, and is configured to be able to rotate the ottoman device 10 with respect to the seating portion 61. The link 23 has a pair of concave holding portions 23 a that are opened outward at positions facing the width direction W. The holding part 23a holds the lower rail 21 therein. An unfolding drive device 62 is provided between the holding portions 23a. The deployment drive device 62 rotates the ottoman device 10 with respect to the seat portion 61 through the link 23.

  As schematically shown in FIG. 4, the ottoman device 10 includes a transmission mechanism 70 and a motor 71. The transmission mechanism 70 is built in each of the top plates 20, 30 and 40, and specifically, a worm helical reduction gear 72, a screw 73, a nut 74, a bevel gear reduction gear 75, and a pinion. 76, a rack 77, and ratchet mechanisms 78a and 78b.

  The worm helical reducer 72, the bevel gear reducer 75, the pinion 76, the rack 77, and the ratchet mechanisms 78a and 78b are examples of the tip top plate transmission mechanism. The worm helical reducer 72, the screw 73, and the nut 74 are It is an example of the transmission mechanism for intermediate | middle top boards.

  A motor 71, a worm helical reduction gear 72, and a bevel gear reduction gear 75 are fixed to the intermediate top plate 30. A nut 74 is fixed to the rear end top plate 20. A screw 73 connected to the worm helical reduction gear 72 is screwed into the nut 74.

  Further, a rack 77 and ratchet mechanisms 78a and 78b are fixed to the tip top plate 40. The rack 77 is meshed with a pinion 76 connected to a bevel gear reducer 75.

  As shown in FIG. 5, the pinion 76 is provided to be rotatable around a rotation axis J <b> 1 along the width direction W. Further, ratchet mechanisms 78 a and 78 b are provided at both ends of the rack 77. Each ratchet mechanism 78a, 78b has a spring 79a and a rotating piece 79b. The rotation piece 79b is provided so as to be rotatable about a rotation axis J2 along the width direction W. The rotating piece 79b has an arm portion 79c extending in a substantially L shape. The tip of the arm portion 79c is positioned so as to line up with the teeth of the rack 77 in the expansion / contraction direction L. The spring 79 a elastically holds the rotating piece 79 b so that the arm portion 79 c is positioned adjacent to the teeth of the rack 77.

<Action>
As shown in FIG. 4, the output of the motor 71 is decelerated by the worm helical reduction gear 72. Due to the rotation of the worm helical reduction gear 72, both the screw 73 and the bevel gear reduction gear 75 are rotated. As the screw 73 rotates, the nut 74 moves in the expansion / contraction direction L with respect to the screw 73. The moving direction of the nut 74 changes according to the rotation direction of the screw 73. As the screw 73 moves, the intermediate top plate 30 expands and contracts in the expansion / contraction direction L with respect to the rear end top plate 20.

  As indicated by a two-dot chain line in FIG. 5, it is assumed that the pinion 76 rotates counterclockwise in the drawing around the rotation axis J1. As the pinion 76 rotates, the pinion 76 moves relatively along the rack 77 in a direction approaching the ratchet mechanism 78a. As a result, the tip top 40 moves in the direction of the intermediate top 30, that is, contracts. Then, as shown by the solid line in FIG. 5, the pinion 76 meshes with the tip of the arm portion 79c. At this time, the tip top plate 40 is completely stored in the intermediate top plate 30.

  In this state, when the pinion 76 continues to rotate in the same direction, the rotating piece 79b and the arm 79c receive the rotational force of the pinion 76 and the rotational axis J2 is centered against the elastic force of the spring 79a. The arm portion 79c and the pinion 76 are separated from each other and the engagement therebetween is released. For this reason, the movement of the pinion 76 in the direction approaching the ratchet mechanism 78a (the left side in the figure) stops, and the pinion 76 idles on the spot. Therefore, even if the drive of the motor 71 continues in this state, the pinion 76 continues to rotate. Therefore, after that, even when the driving of the motor 71 is continued, the state in which the tip top plate 40 is completely stored in the intermediate top plate 30 is maintained.

  Similarly, when the pinion 76 rotates around the rotation axis J1 in the clockwise direction in the drawing, the pinion 76 relatively moves along the rack 77 in a direction approaching the ratchet mechanism 78b. Thereby, the front end top plate 40 moves, that is, extends in a direction away from the intermediate top plate 30. In the same manner as the ratchet mechanism 78a, the rotating piece 79b and the arm portion 79c of the spring 79a are received by the rotational force of the pinion 76 with the tip top plate 40 fully extended with respect to the intermediate top plate 30. Against the elastic force, it rotates in the counterclockwise direction of the drawing around the rotation axis J2, and the arm portion 79c and the pinion 76 are separated to release the engagement therebetween. For this reason, the movement of the pinion 76 in the direction approaching the ratchet mechanism 78b (to the right in the figure) stops, and the pinion 76 idles on the spot. Therefore, even if the drive of the motor 71 continues in this state, the pinion 76 continues to rotate. Therefore, after that, even when the driving of the motor 71 is continued, the state where the tip top plate 40 is completely extended with respect to the intermediate top plate 30 is maintained.

  For example, as shown in FIG. 6, it is assumed that the front end top 40 is located in the intermediate top 30 and the rear end top 20 is located in the front top 40. That is, it is assumed that the ottoman device 10 is in the retracted state. In this state, when the motor 71 is driven in the forward direction, the intermediate top plate 30 extends with respect to the rear end top plate 20 and the front top plate 40 extends with respect to the intermediate top plate 30. Here, as shown in FIG. 4, when the motor 71 is driven for a certain period of time, the movement distance L1 of the rack 77 along the expansion / contraction direction L is the movement distance L2 of the nut 74 along the expansion / contraction direction L. The shapes (pitch, etc.) of the screw 73 and the nut 74 and the pinion 76 and the rack 77 are set so as to be larger. For this reason, the moving speed of the intermediate top 30 with respect to the front top 40 is faster than the moving speed with respect to the rear top 20 of the intermediate top 30. Therefore, the extension of the tip top plate 40 is completed at a timing earlier than the extension of the intermediate top plate 30. After the extension of the tip top plate 40 is completed, the position of the tip top plate 40 is maintained by the ratchet mechanism 78b as described above. That is, after the extension of the tip top plate 40 is completed, only the extension of the intermediate top plate 30 is performed.

  As shown in FIG. 7, the intermediate top plate 30 and the tip top plate 40 are extended so that the supported point P <b> 1 in the seated person's calf matches the support point P <b> 2 located on the upper surface (cushion 30 a) of the intermediate top plate 30. And In this case, first, since the tip top 40 fully extends first, the seated person can place his / her heel on the tip top 40. In this state, the support point P2 of the intermediate top plate 30 is positioned on the rear end top plate 20 side with respect to the supported point P1 of the calf. That is, by further extending the intermediate top plate 30 from this state, the supported point P1 can be matched with the support point P2.

  If the extension speed of the intermediate top plate 30 is higher than the extension speed of the tip top plate 40, the support point P2 has already reached the calf when the tip top plate 40 is stretched to the extent that it can be placed on the tip top plate 40. There is a possibility that the position is beyond the supported point P1. In the configuration of the present embodiment, this can be suppressed.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) The ottoman device 10 includes a rear end top plate 20, an intermediate top plate 30, and a front end top plate 40. Of these three top plates 20, 30, 40, the intermediate top plate 30 is located on the outermost side. By extending and contracting the intermediate top plate 30 with respect to the rear end top plate 20, the intermediate top plate 30 can be more reliably positioned at a position corresponding to the seated person's calf.

  (2) The connecting portion 45c connects the end portions in the height direction H of the first wall portion 45a and the second wall portion 45b, and is formed over the entire area of the bracket 45 along the expansion / contraction direction L. Yes. For this reason, the whole area of the connecting portion 45c receives the weight of the tip top plate 40 in a distributed manner. Therefore, the bending etc. of the bracket 45 can be suppressed.

  (3) The rear end top plate 20 is held against the seat 61 by the link 23 from the inside. The rear end top plate 20 is provided inside the front end top plate 40 and the intermediate top plate 30. Thus, by providing the rear end top plate 20 on the innermost side, a space for providing the link 23, the unfolding drive device 62, and the like can be easily secured.

  (4) The transmission mechanism 70 preferentially extends the distal top 40 with respect to the intermediate top 30. Therefore, the extension of the intermediate top plate 30 is continued even after the tip top plate 40 is extended to such an extent that the seated person's heel can be placed. By continuing the extension of the intermediate top plate 30, the intermediate top plate 30 can be adjusted to a position corresponding to the calf of the seated person.

  (5) The driving force of one motor 71 is transmitted to the tip top plate transmission mechanism including the pinion 76 and the rack 77, and the intermediate top plate transmission mechanism including the screw 73 and the nut 74, respectively. Through these transmission mechanisms, it is possible to make the moving distance of the front top plate 40 relative to the intermediate top plate 30 when the motor 71 is driven over a certain period of time larger than the moving distance relative to the rear end top plate 20 of the intermediate top plate 30. it can. Thereby, the intermediate top plate 30 can be adjusted to a position corresponding to the seated person's calf with one motor 71, that is, a simple configuration.

  (6) For example, when the pinion 76 rotates in a certain direction, the tip top plate 40 extends and reaches a specific position (a position where the tip top plate 40 is completely extended or contracted with respect to the intermediate top plate 30). When the pinion 76 continues to rotate in a certain direction, the rotating piece 79b and the arm 79c are rotated against the elastic force of the spring 79a by receiving the rotational force of the pinion 76. Rotating around J2, the arm 79c and the pinion 76 are separated from each other and the engagement between them is released. For this reason, the pinion 76 idles through the ratchet mechanisms 78a and 78b. Further, by rotating the pinion 76 in a direction opposite to the fixed direction from this state, the tip top plate 40 can be moved in the reverse direction. As described above, by providing the ratchet mechanisms 78a and 78b, the extension or contraction of the intermediate top plate 30 can be continued even after the extension or contraction of the distal end top plate 40 is completed.

  (7) The motor 71 is installed in the intermediate top plate 30. Here, the front top plate transmission mechanism (pinion 76, rack 77, etc.) is provided between the intermediate top plate 30 and the front top plate 40, and the intermediate top plate transmission mechanism (screw 73, nut 74, etc.) is provided. The intermediate top plate 30 and the rear end top plate 20 are provided. Thus, by providing the motor 71 in the intermediate top plate 30, the intermediate top plate transmission mechanism and the front top plate transmission mechanism can be configured more compactly in the telescopic direction L.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
-The structure of the transmission mechanism 70 in the said embodiment can be changed suitably. For example, the screw 73 and the nut 74 may be configured by a rack and pinion similarly to the pinion 76 and the rack 77, and conversely, the pinion 76 and the rack 77 may be a screw and a nut similarly to the screw 73 and the nut 74. You may comprise.

-The structure of the ratchet mechanisms 78a and 78b is not limited to the structure of the said embodiment, if it is a structure which has the same function.
In the above embodiment, both wall portions 45a and 45b of the bracket 45 are connected through the connecting portion 45c. However, the connecting portion may be configured to connect both the wall portions 45a and 45b. For example, the connecting portion may be formed so as to connect both ends of the both wall portions 45a and 45b in the expansion / contraction direction L. Further, the connecting portion 45c may be omitted, and the first wall portion 45a and the second wall portion 45b may be provided separately. In this case, both wall portions 45a and 45b are connected to the rear end top plate 20, respectively.

  In the above embodiment, there is one motor 71, but two motors 71 may be provided. In this case, a motor for rotating the screw 73 and a motor for rotating the pinion 76 are provided. In this configuration, the tip top plate 40 and the intermediate top plate 30 can be moved separately. Therefore, the ratchet mechanisms 78a and 78b can be omitted.

Further, the tip top plate 40 and the intermediate top plate 30 may be configured to be movable manually by omitting the motor. In this case, the transmission mechanism 70 may be omitted.
In the above embodiment, the rear end top plate 20 is provided inside the front end top plate 40, but the rear end top plate 20 is outside the front end top plate 40 and inside the intermediate top plate 30. May be provided.

  In the above embodiment, the motor 71 is installed in the intermediate top plate 30, but may be installed in the rear end top plate 20 or the front end top plate 40.

  DESCRIPTION OF SYMBOLS 10 ... Ottoman apparatus, 20 ... Rear end top plate, 21 ... Lower rail, 23 ... Link, 30 ... Intermediate top plate, 30a ... Cushion, 31, 32 ... Upper rail, 40 ... Front top plate, 41 ... Lower rail, 45 ... Bracket, 45a ... second wall portion, 45c ... coupling portion, 61 ... seating portion, 70 ... transmission mechanism, 71 ... motor, 72 ... worm helical reducer, 73 ... screw, 74 ... nut, 75 ... Bevel gear reducer, 76 ... Pinion, 77 ... Rack, 78a, 78b ... Ratchet mechanism, 79a ... Spring, 79b ... Rotating piece, 79c ... Arm part.

Claims (7)

A rear end top plate supported against the seating portion of the seat;
An intermediate top plate that is disposed outside the rear end top plate, is capable of supporting a calf of a seated person on the seat, and is extendably supported with respect to the rear end top plate;
An ottoman device comprising: a tip top plate disposed inside the intermediate top plate and supported to be extendable and contractable with respect to the intermediate top plate. The ottoman device according to claim 1,
A first slide portion that enables sliding movement along the direction of expansion and contraction of the tip top plate with respect to the intermediate top plate;
A second slide part that enables sliding movement along the expansion and contraction direction of the intermediate top plate with respect to the rear end top plate;
A bracket that connects the first and second slide portions and is fixedly connected to the rear end top plate,
The bracket is
A first wall portion extending in a height direction perpendicular to the stretching direction and provided with the first slide portion;
A second wall portion extending in the height direction and provided with the second slide portion;
An ottoman device comprising: a connecting portion that connects the end portions of the first and second wall portions in the height direction and is formed across the entire area of the bracket along the extending and contracting direction. The ottoman device according to claim 1 or 2,
A link for holding the rear end top plate against the seating portion from the inside;
The rear end top plate is an ottoman device provided inside the front end top plate. In the ottoman apparatus as described in any one of Claims 1-3,
An ottoman device provided with a transmission mechanism that preferentially extends the tip top plate with respect to the intermediate top plate. The ottoman device according to claim 4,
With one motor,
The transmission mechanism is
A tip top plate transmission mechanism that moves the tip top plate by a fixed distance with respect to the intermediate top plate when the motor is driven for a fixed time;
An ottoman device comprising: an intermediate top plate transmission mechanism that moves the intermediate top plate by a distance smaller than the predetermined distance with respect to the rear end top plate when the motor is driven for the predetermined time. The ottoman device according to claim 5,
The tip top plate transmission mechanism is:
A pinion that moves the tip top plate in one direction of the expansion and contraction direction by rotating in a certain direction;
When the tip top plate reaches a specific position and continues to rotate in the predetermined direction, the pinion is rotated with respect to the tip top plate, and from this state, the direction opposite to the fixed direction is obtained. An ottoman device comprising: a ratchet mechanism that allows the tip top plate to move in another direction of the telescopic direction by rotating a pinion in a direction. The ottoman device according to claim 5 or 6,
An ottoman device in which the motor is installed in the intermediate top plate.