JPH0556597U - Car seat footrest - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a footrest for an automobile seat in which the footrest can be set to a desired state by a simple operation. According to the present invention, a rotary shaft having an operating lever is supported under a seat cushion, and a link mechanism is provided between the rotary shaft and a footrest. The footrest is moved between the uppermost position and the uppermost position where the lower end edge is lifted upward and the lock plate having a plurality of locking steps is fixed to the rotary shaft, and the lock pin is rotated by the rotation of the rotary shaft. It is characterized in that the footrest can be set to a plurality of use positions by engaging the plurality of locking step portions to prevent the lock plate from rotating.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a footrest of an automobile seat that can reduce foot fatigue when sitting.

[0002]

[Prior Art]

 Recently, in automobiles, various proposals have been made to improve habitability in the passenger compartment. For example, regarding automobile seats, a seat structure is known in which the seat back of the front seat is tilted rearward to be flattened with the seat cushion of the rear seat so that a comfortable nap can be taken as a simple bed.

[0003]

[Problems to be solved by the device]

 By the way, considering the posture of the occupant while traveling, the upper body of the occupant can be made comfortable by tilting the seat back with a reclining device, but the lower body, especially the legs, can be bent while keeping the toes. It is necessary to keep it on the floor of the passenger compartment, and in such a condition, there is a problem that the smooth blood flow in the foot is impaired and the foot becomes very tired. Especially, this problem became remarkable when driving for a long time. Of course, if the seat is flattened by using the above-mentioned seat structure and the legs are extended, the fatigue of the legs can be reduced, but the work of flattening is complicated and it is possible to easily extend the legs while the vehicle is running. difficult.

On the other hand, as a method of solving the above-mentioned problem, it is conceivable that a footrest for lifting the occupant's foot is provided on the front side of the seat cushion so that the footrest can be retracted and retracted. In this case, considering the narrow space around the seat cushion, It was important how to build.

On the other hand, the applicant of the present invention supports a rotating shaft under the seat cushion, fixes an operation lever for rotating the rotating shaft, and installs a link mechanism between the rotating shaft and the footrest. It is provided, and the rotary shaft is rotated by operating the operating lever, which drives the link mechanism to push the footrest to the storage position where it is stored upright under the seat cushion and pushed forward and the lower edge is lifted upward. We have developed a footrest for automobile seats that can be moved to and from the use position. In such a footrest for an automobile seat, if the use position of the footrest is set in multiple stages, the occupant can select a desired use state and the convenience can be improved. In view of such a point, an object of the present invention is to provide a footrest for an automobile seat, which can set a footrest in a desired state by a simple operation and reduce foot fatigue.

[0006]

[Means for Solving the Problems]

 Therefore, in the footrest of a vehicle seat according to the present invention, a rotating shaft is supported below the seat cushion, and an operating lever for rotating the rotating shaft is fixed to the rotating shaft and the footrest is provided between the rotating shaft and the footrest. Is provided with a link mechanism, and the link mechanism moves the footrest between the storage position in which it is erected and stored under the seat action and the uppermost position in which the lower end edge is lifted upward by the rotation of the rotating shaft. On the other hand, a lock plate is fixed to the rotary shaft, and a plurality of locking step portions are formed on the lock plate. The seat cushion side is separated from the plurality of locking step portions by the rotation of the rotary shaft. A lock pin that engages as much as possible to prevent rotation of the lock plate is provided, and the lock pin is provided with a spring member that urges the lock pin in the direction of engagement with the locking step portion. And summarized in that the settable bets to multiple use positions between a retracted position and an uppermost position.

When the lock pin is provided here, a mounting plate is supported on the lower surface of the seat cushion, and an L-shaped guide groove composed of a vertical groove portion and a horizontal groove portion is formed on the mounting plate, and the inside of the guide groove is formed. The lock pin is slidably supported on the lock pin so that the lock pin can be engaged with and disengaged from the locking step in the vertical groove, and the lock pin is prevented from engaging with the locking step in the horizontal groove. On both sides of the stop, the first guide protrusions that guide the lock pin from the vertical groove into the lateral groove at the uppermost position locking side of the footrest, and the lock pins from the lateral groove into the vertical groove at the storage position locking side It is preferable to form a second guide protrusion that does. Further, the link mechanism may have any structure as long as it moves the footrest between the storage position in which it is stored upright under the seat action and the uppermost position where it is pushed forward and the lower end edge is lifted upward. A structure in which two X-shaped links are connected as shown in the following embodiment can be adopted.

[0008]

[Action]

 When the occupant rests his / her feet, when the operating lever is operated to rotate the rotary shaft in a predetermined direction, the link mechanism pushes the footrest from the storage position under the seat cushion toward the uppermost position, and the lock plate rotates. Since the lock pin engages with and disengages from the locking step, if the operation of the operating lever is stopped when the desired use position is reached, the lock pin engages with one locking step and the lock plate rotates. Is blocked, the rotation axis is locked, and the footrest is locked in the desired use position. In this state, the footrest is slightly inclined in front of the seat cushion or is in a substantially horizontal state, which allows the occupant to rest his / her feet on the footrest. On the other hand, when accommodating the footrest, the reverse operation to the above may be performed.

At this time, if the first and second guide protrusions are provided on both sides of the lock plate and the lock pin is slidably supported in the L-shaped guide groove of the mounting plate, the footrest is moved beyond the uppermost position. Since the first guide protrusion guides the lock pin to the lateral groove of the guide groove and the lock pin cannot be locked with the locking step of the lock plate, the footrest is not locked at each use position, When it moves to the storage position and reaches the storage position, the second guide protrusion guides the lock pin to the vertical groove portion of the guide groove, so that the lock pin can be disengaged from the locking step portion of the lock plate again.

[0010]

【Example】

 Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 8 show a footrest of a vehicle seat according to an embodiment of the present invention. In the figure, a seat 1 is placed on the passenger compartment floor, the seat 1 is composed of a seat cushion 2 and a seat back 3, and a reclining device is provided between the seat cushion 2 and the seat back 3. The seat back 3 can recline with respect to the seat cushion 2.

A footrest mechanism 4 is provided below the seat cushion 2. In the footrest mechanism 4, the footrest 40 is constructed by incorporating a cushion member and a frame inside the skin, and a rotation shaft 41 having a rectangular cross section is rotatably supported on the lower surface of the seat cushion 2 and the rotation of the rotation shaft 41 is reduced. An operation lever 42 is fixed to the end portion at the side of the seat cushion 2.

Further, a pair of left and right link mechanisms (however, only one is shown in the figure) 5 is interposed between the footrest 40 and the rotary shaft 41. In this link mechanism 5, the tips of the two link plates of the first and second X-shaped links 50, 51 are connected to each other, and the other end side of the two link plates of the first X-shaped link 50 has a first link plate. One ends of the third and fourth link plates 52 and 53 are connected to each other, the other end of the third link plate 52 is fixed to the rotary shaft 41, and the other end of the fourth link plate 53 is the rotary shaft 41. Is rotatably attached to. On the other hand, one end of the fifth link plate 54 is connected to one end of the other link plate of the second X-shaped link 51, and the other end of the second X-shaped link 51 and the fifth link plate 54 are connected. The other ends of both are connected to the lower surface of the footrest 40. In this way, the link mechanism 5 moves between the storage position A in which the footrest 40 is erected and stored under the seat cushion 2 by the rotation of the rotation shaft 41 and the uppermost position D in which the footrest 40 is pushed forward and the lower end edge is lifted upward. It is designed to move along an arcuate locus (see a in FIG. 6).

A lock plate 6 is fixed to the rotary shaft 41. The lock plate 6 has a substantially triangular shape, and one side edge of the lock plate 6 is formed in an arc shape. Two locking step portions 60, 61 are formed at predetermined intervals in the center of the arc shape edge portion of the lock plate 6. The first and second guide protrusions 62 and 63 are provided at both ends so as to project. A mounting plate 65 is supported on the lower surface of the seat cushion 2 by a spring member 66, the rear end of the mounting plate 65 is pivotally supported by the lock plate 6, and the rear end of the mounting plate 65 is supported. Is formed with an L-shaped guide groove 7 consisting of a vertical groove portion 70 and a horizontal groove portion 71, a lock pin 8 is slidably supported in the guide groove 7, and between the lock pin 8 and the lock plate 6. A spring member 80 for urging the lock pin 8 in the engaging direction is provided. The lock pin 8 can be engaged with and disengaged from the locking step portions 60 and 61 of the lock plate 6 in the vertical groove portion 70 of the guide groove 7. The engagement with the locking step portions 60 and 61 is prevented in the lateral groove portion 71, and the first guide protrusion 62 allows the vertical groove portion 70 to enter the lateral groove portion 71, and the second guide protrusion 63 causes the lateral groove portion. From 71 to the vertical groove 70 It has become as to be. Further, the locking step portions 60 and 61 of the lock plate 6 are formed with inclined side portions 60a and 61a on the side of the first guide protrusion 62, and the lock plate 6 is rotated from the uppermost use position D 1 to the storage position A 1. The lock pin 8 is fitted in the locking step portions 60 and 61 to prevent the lock plate 6 from rotating, while the lock pin 8 prevents the lock plate 6 from rotating in the opposite direction. The lock plate 6 is allowed to rotate by sliding inside and separating from the locking step portions 60 and 61.

One end of a fixed link 90 is fixed to the rotary shaft 40, a C-shaped operation link 9 is connected to the other end of the fixed link 90, and the other end of the operation link 9 is connected to the other end. One end of the spring member 91 is connected, and the other end of the spring member 91 is fixed to the lower surface of the seat cushion 2. When the operation lever 42 is operated, the operating link 91 and the fixing member are fixed before the first use position B 1 of the footrest 40. The line connecting the connecting point 92 of the link 90 and the fixing point 93 of the spring member 91 is set so as to extend beyond the dead line connecting the axis of the rotating shaft 41 and the fixing point of the spring member 91. The operation of the footrest 40 becomes lighter as it goes from the first use position B to the highest use position D of the footrest 40.

Next, the function and effect will be described. During normal use of the seat 1, as shown in FIG. 7, the footrest 40 is stored in a state A standing upright below the seat cushion 2. In such a state, the occupant does not get in the way when the occupant sits on the seat 1 and bends his / her legs to place it on the passenger compartment floor F.

When the occupant rests his / her feet in such a state A, first, the operator holds the operation lever 42 in his / her hand and rotates it. Then, the rotary shaft 41 is rotated by the operation of the operation lever 42, and the link mechanism 5 pushes the footrest 40 forward from the standing storage state A under the seat cushion 2 while directing the surface upward, as shown in FIG. (Refer to FIG. 6) When the lock plate 6 rotates accordingly and the lock pin 8 engages with the first locking step portion 60, the footrest 40 is locked (see B in FIG. 1). Further, when the operating lever 42 is operated, the lock plate 6 rotates to disengage the lock pin 8 from the first locking step portion 60, and the lock pin 8 engages with the next locking step portion 61. Is locked in its next position of use (see C in FIG. 1). When the operating lever 42 is further operated, as shown in FIG. 2, the lock pin 8 is disengaged from the locking step portion 61 and positioned in front of the first guide protrusion 62, and the arc-shaped edge portion of the lock plate 6 and the guide groove are formed. The footrest 40 is locked in the uppermost use position (see D in FIG. 1). Since the footrest 40 can be locked in three stages in this manner, the operation of the operation lever 42 may be stopped at the desired use positions B to D.

When the footrest 40 is stored, when the operating lever 42 is further rotated in the same direction as when it is used at the uppermost use position D of the footrest 40, the first guide protrusion 62 moves the lock pin 8 this time. The guide pin 8 is guided from the vertical groove portion 70 of the guide groove 7 to the horizontal groove portion 71, and the guide pin 8 is held in the horizontal groove portion 71 and cannot be locked with the locking step portions 60 and 61 of the lock plate 6. When the hand is released from 42, the footrest 40 is stored under the seat cushion 2 while the lock plate 6 is rotated in the reverse direction by its own weight and the link mechanism 5 is contracted. When the footrest 40 is in the storage position A, as shown in FIG. 3, the lock pin 8 contacts the second guide protrusion 63 of the lock plate 6, and the second guide protrusion 63 causes the lateral groove portion 71 of the guide groove 7. Since it is guided from the vertical groove portion 70 to the vertical groove portion 70, the lock pin 8 can be engaged and disengaged with the locking step portions 60 and 61 of the lock plate 6 again. When storing the footrest 40 from the first use position B or the next use position C, the footrest 40 should be directly stored from the use positions B and C to the storage position A due to the structure of the lock plate 6. However, once it is moved to the uppermost use position D, it is stored in the storage position A.

Since the footrest 40 can be set to three use positions B to D as shown in FIG. 1 by engaging and disengaging the lock pin 8 and the lock plate 6 in this manner, the footrest 40 can be set to an optimum angle. You can rest your legs on this and rest comfortably. As a result, it is possible to significantly reduce the fatigue of the occupant's feet during traveling of the vehicle, particularly during long-term traveling, and it is possible to put the footrest 40 into the use state by a simple operation. At that time, if the reclining device is operated and the seat back 3 is tilted rearward, the occupant can extend the entire body of the legs and back muscles, which can reduce fatigue of the entire body and make a nap. It is possible to take it easily.

Further, when the operation lever 42 is operated as described above, the spring force of the spring member 91 acts as a rotational resistance of the operation lever 42 until the first use position B of the footrest 40 is reached. Although the operation of 42 is slightly heavy, when the position before the first use position B is reached, the line connecting the connecting point 92 and the fixing point 93 exceeds the dead line of the spring member 91, so that the spring force of the spring member 91 causes the operation lever 42 to move. It acts as a rotational force, and the operation lever 42 can be operated lightly. In particular, since the connection point 92 becomes farther from the fixed point 93 as the uppermost use position D is reached, the spring force increases and the lever operation becomes even lighter.

[0020]

[Effect of the device]

 As described above, according to the footrest of the vehicle seat of the present invention, the rotation shaft is supported on the lower side of the seat cushion, and the operation lever for rotating the rotation shaft is fixed to the rotation shaft. A link mechanism is provided between the footrest and the footrest.The link mechanism is installed between the storage position in which it is erected and stored under the seat cushion by the rotation of the rotating shaft and the uppermost position in which the link mechanism is pushed forward and the lower end edge is lifted up. While the footrest is configured to move between the two, a lock plate is fixed to the rotating shaft, a plurality of locking step portions are formed on the locking plate, and a plurality of locking steps are formed on the seat cushion side by rotating the rotating shaft. A lock pin is provided to prevent the lock plate from rotating by releasably engaging with each locking step portion, and the lock pin is provided with a spring member for urging the locking pin in the engaging direction with the locking step portion. Setting , Since the possible settings to multiple use positions between a retracted position and an uppermost position the footrest, the footrest by a simple operation to set the desired state has an effect of significantly reducing the fatigue of the rider's foot.

[Brief description of drawings]

1 is a schematic side view showing a vehicle seat having a footrest according to an embodiment of the present invention.

FIG. 2 is a schematic side view showing a state around the operation lever in a stored state of the footrest.

FIG. 3 is a schematic side view showing a state around the operation lever in the uppermost use state of the footrest.

FIG. 4 is a perspective view showing the structure of the footrest when viewed from the back side of the seat cushion.

FIG. 5 is an enlarged view showing a structure around the operation lever.

FIG. 6 is a diagram showing a moving state of the footrest.

FIG. 7 is a diagram showing a stored state of the footrest.

FIG. 8 is a diagram showing an example of a usage state of the footrest.

[Explanation of symbols]

2 seat cushion 4 footrest mechanism 40 footrest 41 rotary shaft 42 operation lever 5 link mechanism 6 lock plate 60 locking step 61 locking step 62 first guide projection 63 second guide projection 65 mounting plate 7 guide groove 70 vertical Groove portion 71 Horizontal groove portion 8 Lock pin 80 Spring member

Claims (2)

[Scope of utility model registration request] 1. A rotating shaft is supported on the lower side of the seat cushion, an operating lever for rotating the rotating shaft is fixed to the rotating shaft, and a link mechanism is provided between the rotating shaft and the footrest. The link mechanism is configured to move the footrest between the storage position in which the footrest is erected and stored under the seat cushion and the uppermost position in which the lower end edge is lifted upward by the rotation of the rotating shaft. On the other hand, a lock plate is fixed to the rotary shaft, and a plurality of locking step portions are formed on the lock plate. The seat cushion side is separated from the plurality of locking step portions by rotation of the rotary shaft. A lock pin is provided which is engagably engaged to prevent rotation of the lock plate, and the lock pin is provided with a spring member for urging the lock pin in an engaging direction with the locking step portion. A footrest for an automobile seat, wherein the footrest can be set to a plurality of use positions between the storage position and the uppermost position. 2. A mounting plate is disposed on the lower surface of the seat cushion, and an L-shaped guide groove having a vertical groove portion and a horizontal groove portion is formed in the mounting plate, and the lock pin is provided in the guide groove. Is slidably supported, the lock pin can be engaged with and disengaged from the locking step in the vertical groove, and the engagement with the locking step is prevented in the lateral groove. First guide protrusions for guiding the lock pin from the vertical groove portion into the lateral groove portion on the uppermost position locking side of the footrest on both sides of the locking step portion of the lock plate, and the locking position on the storage position locking side. The footrest for an automobile seat according to claim 1, wherein a second guide protrusion is formed to guide the pin from the lateral groove portion into the vertical groove portion.