JP3993299B2 - Electric ottoman device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric ottoman device in which a ottoman is rotatably provided at a front portion of a seat cushion, and the ottoman is rotated between a footrest position and a storage position by an electric drive mechanism.
[0002]
[Prior art]
As a conventional electric ottoman device, for example, there is one described in JP-A-9-206157. In this conventional example, a movable rail of a slider arranged to extend in the front-rear direction is moved back and forth by an electric drive mechanism to operate a link mechanism that is formed in a flat plate shape and includes six link arms, There is described a chair footrest posture changing device configured to change the posture between a stowed posture and a footrest posture.
[0003]
[Problems to be solved by the invention]
However, in the conventional posture changing device, the footrest, that is, the ottoman, can be changed between the stowed posture and the footrest posture by the electric drive mechanism. Since the link mechanism to be connected is configured by combining six flat link arms, the structure becomes complicated and the two link arms connected to the footrest when the footrest is in the footrest posture Since a large gap is generated between them, there is a possibility that a finger or clothes may be pinched, and there is an unsolved problem that costs must be taken and the cost increases.
[0004]
In particular, when mounted on a vehicle, the height of the seating portion is relatively low, and the footrest must be stored within this height, so the width of the footrest cannot be widened. There are also unresolved issues.
[0005]
Therefore, the present invention has been made paying attention to the unsolved problems of the conventional example, and the footrest width by the ottoman can be made longer than the height position of the seating portion, while the link mechanism is simplified. An object of the present invention is to provide an electric ottoman device that suppresses the occurrence of a gap at the footrest position of the ottoman.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an electric ottoman device according to claim 1 is configured such that an ottoman is rotatably connected to a front portion of a seat cushion, and the ottoman is rotated between a footrest position and a storage position by an electric drive mechanism. In the electric ottoman device, the ottoman is composed of an ottoman body rotatably connected to a front portion of the seat cushion, and a sliding body disposed to be movable forward and backward with respect to the ottoman body. An electric rotation drive source for rotating the ottoman body between a storage position and a footrest position, and when the ottoman body is rotated from the storage position to the footrest position side by the electric rotation drive source, A link member that projects the sliding body forward from the ottoman body, and one end of the link member is rotatably disposed on the seat cushion side. A first pivot link, a main link pivotally connected to a free end of the first pivot link, and a pivot link between a tip of the main link and the sliding body. And a bracket having one end projecting from the back side of the ottoman body, and the tip of the bracket is first from the second pivot link of the main link. When the ottoman main body is rotated to the footrest position side, the gap between the main link and the back side of the ottoman main body is narrowed. It is set as follows.
[0007]
In the electric ottoman device according to the first aspect, the sliding body is slidably provided on the ottoman body, and the sliding body is retracted to the ottoman body side in the storage position, so that the seat is securely stored on the front end side of the seat cushion. From this state, by rotating the ottoman main body to the footrest position by the electric rotation driving source, the sliding member projects forward from the ottoman main body by the link member, and a wide footrest width can be secured. The link member is composed of the first rotation link, the main link, the second rotation link, and the bracket, and the bracket is formed to protrude from the ottoman body, so by setting the protrusion height small, Minimizing the gap between the ottoman body and the main link when the ottoman body is rotated to the footrest position Kill.
[0008]
According to a second aspect of the present invention, in the electric ottoman device according to the first aspect of the present invention, the connection mechanism between the second rotating link and the sliding body includes an engagement pin fixed to the sliding body, and the first The engagement rotator that is slidably engaged with the engagement pin formed in the two rotation links, and the entire width of the ottoman constituted by the ottoman body and the sliding body is the maximum width. In this state, the ottoman is rotated to a predetermined footrest position that is substantially parallel to the floor surface .
[0009]
In the electric ottoman device according to claim 2, the width between the ottoman body and the sliding body is equal to the length of the engagement long hole slidably engaged with the engagement pin formed in the second rotation link. The rotation range of the ottoman body can be expanded while keeping the constant, so that the ottoman body can be prevented from protruding forward from a predetermined position, and the rotation range of one link member can be expanded. Can do.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 to FIG. 6 are schematic configuration diagrams showing an embodiment of the present invention. In FIG. 6, reference numeral 1 denotes a passenger seat of a vehicle. A tiltable seat back 3 and a ottoman 4 disposed at a front end portion of the seat cushion 2 so as to be rotatable between a storage position shown by a solid line in FIG. 6 and a footrest position shown by an alternate long and short dash line are provided. .
[0011]
Here, the seat cushion 2 is provided for adjusting the height of the bracket 7 on the front end side of a pair of left and right seat slides 6 disposed on the floor surface of the vehicle body with a cushion frame 5 disposed therein. It is supported via a link mechanism 8 and is rotatably supported by a bracket 9 on the rear end side.
[0012]
As shown in FIG. 5, the ottoman 4 has a support arm 11 </ b> A that protrudes forward and is fixed to the left end side of the front end portion of the cushion frame 5, and a support that protrudes and is fixed to the front end side of the right side surface of the cushion frame 5. The ottoman main body 13 is rotatably supported between the arms 11B, and an auxiliary unit 14 serving as a sliding body is provided on the ottoman main body 13 so as to freely advance and retreat.
[0013]
Here, as shown in FIG. 5, in the ottoman main body 13, a rotating shaft 12 a is inserted into the base member 12 fixed to the support arm 11 </ b> B, and a rotating disk (on the back side of the base member 12 is inserted into the rotating shaft 12 a. A support plate member 12b connected to the rotating disk is fixed to a bracket 12c formed on the right side surface of the ottoman body 13.
[0014]
The base member 12 and the rotating disk have internal teeth formed on their facing surfaces, and a sun gear fixed to the rotary shaft 12a via a plurality of pinions is disposed in these internal teeth to reduce the speed. A planetary gear as a gear is configured, and the rotation shaft 12a is further connected to the rotation shaft of an electric motor 12m as an electric rotation drive source with a speed reducer fixed to the support arm 11B, and the electric motor 12m is rotated forward, for example. As a result, the rotating shaft 12a rotates counterclockwise and the pinion of the planetary gear rotates counterclockwise, so that the free rotating disk, that is, the support plate member 12b rotates clockwise to rotate the ottoman body. The ottoman body 13 is rotated counterclockwise by rotating the electric motor 12m in the reverse direction. The support arm 11B, the base member 12, the rotating disk, and the electric motor 12m are covered with a cover 15.
[0015]
Further, as shown in FIG. 5, the ottoman main body 13 includes a frame body 16 in which three U-shaped frames 16a to 16c whose inner end faces are opened are connected in a U-shape so that the lower ends are opened, and the frame 16 And a cushion 17 covering the body 16.
[0016]
Further, the auxiliary unit 14 includes a rectangular sliding frame body 18 guided in the left and right frames 16 a and 16 c of the ottoman body 13 and a cushion 19 covering the sliding frame body 18. The U-shaped guide members 20 that engage with the inner peripheral surfaces of the left and right frames 16a and 16c are attached to the left and right frame portions, respectively.
[0017]
On the other hand, on the inner peripheral surface side of the front end side frame 5F of the cushion frame 5 described above, the first rotation link 23 is rotatably connected to the support brackets 21 respectively attached to the inside of the support arms 11A and 11B. Yes.
[0018]
Then, one end of a main link 24 that linearly extends forward and upward is attached to the free end of the first rotation link 23 so as to be rotatable.
[0019]
The ottoman main body 13 having the other end of the main link 24 rotatably connected to a pair of brackets 25 fixed to the inner surface side of the upper surface frame 18U of the sliding frame 18 of the auxiliary unit 14 described above is in the storage position. In a state, it is connected to a second rotating link 28 that hangs down substantially parallel to the sliding frame 18.
[0020]
Here, the main link 24 and the second rotation link 28 are an engagement pin formed in the main link 24 in an engagement long hole 26 formed to extend downward to the second rotation link 28. 27 are slidably engaged with each other.
[0021]
Further, the intermediate portion of the main link 24 is rotatably connected to the tip of a bracket 29 that is formed on the back side of the inner peripheral surface side of the left and right frames 16a and 16c in a state where the ottoman body 13 is in the storage position. ing.
[0022]
Here, the protruding length of the bracket 29 is narrowed so that a finger or the like does not enter the gap between the main link 24 and the back side of the ottoman body 13 when the ottoman 4 is rotated to the footrest position as will be described later. Is set to The first rotating link 23, the main link 24, the second rotating link 28, and the bracket 29 constitute a link member.
[0023]
Next, the operation of the embodiment will be described.
As shown in FIG. 2, it is assumed that the ottoman body 13 is in a storage position that extends downward along the front end surface of the seat cushion 2, and in this state, the first rotation link 23 extends downward to the right. It shall be in the rotation position to do.
[0024]
In this storage position, the auxiliary unit 14 has the sliding frame 18 inserted into the frame 16 of the ottoman body 13 so that the auxiliary unit 14 and the ottoman body 13 are in close contact with each other, and the width of the ottoman body 13 and the auxiliary unit 14 is increased. Is the shortest width, less than the minimum height of the seat cushion 2, and the lower end of the auxiliary unit 14 is slightly separated from the floor surface.
[0025]
When the electric motor 12m is driven forward, for example, in this storage position, the ottoman body 13 starts to rotate clockwise in FIG. 2 as described above.
[0026]
By rotating the ottoman body 13 in the clockwise direction, the angle between the main link 24 and the bracket 29 of the ottoman body 13 is substantially zero. The sliding frame body 18 of the auxiliary unit 14 connected to the part via the second rotating link 28 moves forward with respect to the frame 16, whereby the auxiliary unit 14 protrudes forward from the ottoman body 13. The entire width of the ottoman 4 composed of the ottoman main body 13 and the auxiliary unit 14 is expanded, and the footrest area is increased.
[0027]
Then, as shown in FIG. 3, when the ottoman body 13 is inclined downward by, for example, about 15 ° with respect to the horizontal state, the guide member 20 formed on the sliding frame 18 of the auxiliary unit 14 is moved to the ottoman body 13. By contacting a stopper (not shown) formed in the left and right frames 16a, 16c, the width of the ottoman 4 becomes the maximum width L, and further movement is restricted.
[0028]
In this state, when the electric motor 12m is further rotated and the ottoman body 13 is rotated clockwise, the engagement pin 27 of the second rotation link 28 is engaged with the bracket 25 as shown in FIG. By sliding forward along the joint hole 26, a footrest position allowing the clockwise rotation of the ottoman body 13 while maintaining the maximum width L of the ottoman 4 is obtained, and the footrest position is not shown. Detecting by a position sensor such as a limit switch, and thereby stopping energization of the electric motor 12m, the rotation of the ottoman 4 is stopped, and the ottoman 4 is brought to a predetermined footrest position substantially parallel to the floor surface. Stopped.
[0029]
At this time, as shown in FIG. 4, the auxiliary unit 14 protrudes forward with respect to the ottoman main body 13 so that the footrest area as the ottoman 4 is the sum of the area of the ottoman main body 13 and the auxiliary unit 14 at the storage position. It is greatly enlarged compared to the above, and can support the calf of the seated person, so that the seated person can take a relaxed posture. Further, even if the ottoman main body 13 rotates from the position shown in FIG. 3 to the position shown in FIG. 4, the protrusion amount of the auxiliary unit 14 to the front side does not change in this range, and the maximum width L of the ottoman 4 is not changed. To maintain.
[0030]
In order to return from the footrest position to the storage position, by rotating the electric motor 12m in the reverse direction, the ottoman main body 13 is rotated counterclockwise from the footrest position shown by the one-dot chain line in FIG. The sliding frame 18 of the auxiliary unit 14 is gradually inserted into the frame 16 of the ottoman body 13 by the action of the link member constituted by the rotation link 23, the main link 24, the second rotation link 28 and the bracket 29. When the ottoman body 13 reaches the storage position shown in FIG. 2, the auxiliary unit 14 comes into contact with the ottoman body 13, and the width of the ottoman 4 is minimized, thereby preventing interference with the floor surface. Can do.
[0031]
Thus, when the ottoman body 13 reaches the storage position, this is detected by a position detection sensor (not shown), the energization to the electric motor 12m is stopped, and the rotation is stopped.
[0032]
As described above, according to the embodiment, the first rotating link 23, the main link 24, the second rotating link 28, and the bracket are driven by driving the electric motor 12m to rotate the ottoman main body 13. By the action of the link member 29, the auxiliary unit 14 can be slid with respect to the ottoman body 13, and the rotation and width expansion of the ottoman 4 can be performed simultaneously with a simple link mechanism.
[0033]
Moreover, since the protruding length of the bracket 29 of the ottoman body 13 is set to be relatively short, the gap between the ottoman body 13 and the main link 24 is reduced in a state where the ottoman 4 is rotated to the footrest position. It is possible to reliably prevent damage to fingers and clothes.
[0034]
In the above embodiment, the case where the engagement pin 27 is formed in the second rotation link 28 and the engagement long hole 26 is formed in the bracket 25 has been described. However, the present invention is not limited to this. It is also possible to provide the engagement long hole 26 in the second rotation link 28 and the engagement pin 27 in the bracket 25. Further, the main link 24 and the second rotation link 28 or the bracket 29 are connected. The engagement pin and the engagement long hole 26 may be provided in the portion.
[0035]
Further, the engagement long hole 26 may be omitted, and the engagement pin 27 of the second rotation link 28 may be rotatably attached to the bracket 25. In this case, the rotation of the ottoman main body 13 can be performed. Although the moving range is narrowed, the ottoman body 13 cannot be rotated to the horizontal state, but the calf can be supported and the function as the ottoman 4 can be exhibited.
[0036]
Furthermore, in the above-described embodiment, the case where the ottoman body 13 and the auxiliary unit 14 are formed so that their cushions overlap each other has been described. However, the present invention is not limited to this. A cover such as a bellows may be provided so as to surround the sliding frame 18 between the unit 14 and the auxiliary unit 14 is disposed in a nesting manner in the ottoman main body 13 so that the auxiliary unit 14 is provided. It is also possible to prevent a large step from being generated between the ottoman body 13 and the ottoman main body 13 when it is advanced.
[0037]
【The invention's effect】
As described above, according to the electric ottoman device of the first aspect, the ottoman is disposed rotatably with respect to the ottoman main body that is rotatably connected to the front portion of the seat cushion. And an electric rotation drive source for rotating the ottoman body between a storage position and a footrest position, and the electric rotation drive source to move the ottoman body from the storage position to the footrest position side. A link member for causing the sliding body to protrude forward from the ottoman body when rotated, and the link member has a first rotation link having one end rotatably disposed on the seat cushion side. A main link rotatably connected to a free end of the first rotation link, and a second rotation rotatably disposed between the tip of the main link and the sliding body With link And a bracket having one end protruding from the back side of the ottoman body, and the end of the bracket is rotated to the intermediate portion of the main link that is closer to the first rotation link than the second rotation link. Since the gap between the main link and the back side of the ottoman main body is set to be narrow when the ottoman main body is pivotally connected and rotated to the footrest position side, the sliding body is By contracting to the ottoman body side in the storage position, it can be securely stored on the front end side of the seat cushion, and from this state, the ottoman body is rotated to the footrest position by the electric rotation drive source, thereby the link member. Since the sliding body projects forward from the ottoman body by the action of the above, a wide footrest width can be ensured, so the ottoman body can be Both the movement and the expansion and contraction of the sliding body can be performed, the entire configuration can be simplified, and the width of the ottoman at the footrest position can be made wider than the width of the ottoman at the storage position. Therefore, it becomes possible to hold the calf of the seated person in a wide range, and the seated person can be more relaxed.
In addition, since the link member has a simple configuration including the first rotation link, the main link, the second rotation link, and the bracket, the bracket can be disposed along the ottoman body. A gap generated between the ottoman body and the bracket can be suppressed to a minimum, and damage to fingers and clothes can be surely prevented.
[0038]
Further, according to the electric ottoman device of the second aspect, the connection mechanism between the second rotating link and the sliding body is provided on the engaging pin fixed to the sliding body and the second rotating link. The ottoman is composed of an engagement elongated hole that is slidably engaged with the formed engagement pin, and the ottoman is configured to have a maximum width of the ottoman body and the sliding body. Is rotated to a predetermined footrest position that is substantially parallel to the floor surface, so that the rotation of the ottoman body is maintained while keeping the width between the ottoman body and the sliding body constant by the length of the engagement slot. The range of motion will be widened, the Ottoman body can be prevented from protruding forward from a predetermined position, the range of rotation with one link member can be expanded, and according to the needs of the seated person Any inclination of ottoman It is possible to obtain.
[Brief description of the drawings]
FIG. 1 is a side view showing a schematic configuration of an embodiment of an electric ottoman device according to the present invention.
FIG. 2 is a side view of the electric ottoman according to the present invention in a storage position.
FIG. 3 is a side view of the electric ottoman according to the present invention in a footrest position.
FIG. 4 is a side view showing a state where the electric ottoman according to the present invention is at a maximum footrest position.
FIG. 5 is an exploded perspective view of FIG. 1 of the electric ottoman device according to the present invention.
FIG. 6 is a side view of a seat to which the electric ottoman device according to the present invention is applied.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 3 Seat back 4 Ottoman 12m Electric motor 13 Ottoman main body 14 Auxiliary unit (sliding body)
16 Frame 18 Sliding frame body 23 1st rotation link 24 Main link 25 Bracket 26 Engagement long hole 27 Engagement pin 28 2nd rotation link 29 Bracket

Claims (2)

An electric ottoman device in which a ottoman is rotatably connected to a front portion of a seat cushion, and the ottoman is rotated between a footrest position and a storage position by an electric drive mechanism, wherein the ottoman is a front portion of the seat cushion. An ottoman body that is pivotably connected to the ottoman body, and a sliding body that is disposed so as to be movable back and forth with respect to the ottoman body, and that is electrically driven to rotate the ottoman body between a storage position and a footrest position. A rotation drive source; and a link member that projects the sliding body forward from the ottoman body when the ottoman body is rotated from the storage position to the footrest position side by the electric rotation drive source, The link member has a first rotation link, one end of which is rotatably disposed on the seat cushion side, and a free end of the first rotation link. It has a connected main link and a second rotating link rotatably arranged between the tip of the main link and the sliding body, and one end is formed to protrude from the back side of the ottoman body. A bracket, and a tip end of the bracket is pivotally connected to an intermediate portion of the main link that is closer to the first rotation link than the second rotation link, and the ottoman body is in a footrest position. The electric ottoman device is set so that a gap between the main link and the back side of the ottoman body is narrowed when the ottoman is rotated to the side . A connection mechanism between the second rotating link and the sliding body is slidably engaged with an engaging pin fixed to the sliding body and the engaging pin formed on the second rotating link. In the state where the entire width of the ottoman constituted by the ottoman main body and the sliding body is the maximum width, the ottoman is moved to a predetermined footrest position substantially parallel to the floor surface. The electric ottoman device according to claim 1, wherein the electric ottoman device is rotated .

Images