Folding leg support for seat and seat

Abstract

The utility model provides a folding leg support for a seat and the seat, the folding leg support comprises a swing arm, a base and a primary support plate, one end of the swing arm rotates at a fixed point, the base is fixedly connected with the other end of the swing arm, the primary support plate is installed on the base in a sliding mode, and the primary support plate slides along the sliding direction of the base. And the radial direction of the arc-shaped track is consistent with that of the base. A gear is fixedly installed on the base, and a rack meshed with the gear is fixed to the first-stage supporting plate. A rope loop is arranged on one side of a rotating shaft of the gear, a pull rope is wound around the rope loop, one end of the pull rope is fixed to the rope loop, and the other end of the pull rope is fixed to the outside. The first-stage supporting plate extends to the lower portion of the seat in a sliding telescopic mode, different seat lengths are formed according to different requirements of sitting postures or lying, and the use experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to train seat manufacturing technical field, concretely relates to a folding leg support for seat and seat. BACKGROUND

[0002] The seat of the existing train has the adjusting function of different modes of sitting and lying, when the lying mode is used, the passenger's lower leg and foot lack support due to the length limitation of the seat, and the riding experience is reduced. In addition, the train seat product has high requirements for firmness and durability, the existing electric folding leg support on the market has high requirements for the precision of parts, the structure is complex, and constant deployment and maintenance are needed during long-term use, which is not suitable for high-flow and crowded trains. SUMMARY

[0003] The utility model aims at providing a folding leg support for train seat and seat with firm structure and high durability to solve the problems in the prior art.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A folding leg support for seat, comprising a swing arm, a base and a first supporting plate, one end of the swing arm is fixedly rotated, the base is fixedly connected with the other end of the swing arm, and the first supporting plate is slidably installed on the base; the sliding direction of the first supporting plate on the base is consistent with the radial direction of the arc-shaped track formed by the rotation of the base and the swing arm.

[0006] Further, a gear is fixedly installed on the base, and a rack engaged with the gear is fixed on the first supporting plate.

[0007] Further, a rope ring is arranged on one side of the rotating shaft of the gear, a pull rope is wound on the rope ring, one end of the pull rope is fixed on the rope ring, and the other end of the pull rope is fixed on the outside.

[0008] Further, a sliding rail or a sliding block is fixed on the base, a sliding block or a sliding rail is fixed on the first supporting plate, the sliding block is clamped on the sliding rail, and the sliding block slides along the sliding rail.

[0009] Further, a second supporting plate is further included, a horizontal shaft or a shaft ring is fixed at the end of the first supporting plate, a shaft ring or a horizontal shaft is arranged on one side of the second supporting plate, the shaft ring is sleeved outside the horizontal shaft, and the horizontal shaft rotates in the shaft ring.

[0010] Further, a sleeve rod is further arranged, the sleeve rod comprises a rod sleeve and an inner rod, the rod sleeve is movably sleeved outside the inner rod, the rod sleeve is fixed on the base, the inner rod is fixed on the first supporting plate, and the rod sleeve and the inner rod are connected through a tension spring.

[0011] Further, anti-skid patterns are arranged on the surfaces of the first supporting plate and the second supporting plate.

[0012] The utility model also provides a seat, including seat frame, chair back and chair pad, chair back and chair pad install on seat frame, the seat is installed on seat frame with folding leg support.

[0013] Further, the seat frame is rotatably connected with one end of the two swing arms.

[0014] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0015] (1) The leg support is rotatably mounted on the seat by the swing arm, and can be folded and stored under the seat, which is convenient and beautiful.

[0016] (2) The first supporting plate is extended under the seat in a sliding and telescopic manner, and different seat lengths are formed according to different sitting or lying needs, thereby improving the use experience.

[0017] (3) The second supporting plate is rotatably mounted on the first supporting plate, further providing a foot lifting function, and realizing functional diversification. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 The utility model provides a seat folding leg support overall structure schematic view for preferable embodiment of the utility model;

[0019] Fig. 2 The utility model provides a seat folding leg support internal structure schematic view for preferable embodiment of the utility model;

[0020] Fig. 3 The utility model provides a seat folding leg support disassembly structure schematic view for preferable embodiment of the utility model;

[0021] In the drawing: 1 - swing arm, 2 - base, 3 - first supporting plate, 4 - second supporting plate, 5 - external fixed point, 11 - swing arm and seat mounting point, 21 - gear, 31 - rack, 23 - pull rope, 24 - rope ring, 25 - rod sleeve, 26 - slide rail, 32 - inner rod, 33 - sliding block. DETAILED DESCRIPTION

[0022] The specific embodiments of the utility model will be further described in detail below in combination with the drawings. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0023] EMBODIMENT

[0024] Please see Figs. 1 to 3The embodiment provides a folding leg support for a seat, which comprises a swing arm 1, a base 2 and a first supporting plate 3, an installation point 11 is arranged at one end of the swing arm 1 and used for being connected with the seat. The swing arm 1 rotates around the installation point 11, the base 2 is fixedly connected with the other end of the swing arm 1, the first supporting plate 3 is slidably arranged on the base 2, and the sliding direction of the first supporting plate 3 on the base 2 is consistent with the radial direction of the arc-shaped track formed by the base 2 rotating with the swing arm 1, that is, the first supporting plate 3 and the base 2 swing together with the swing arm 1, and the first supporting plate 3 slides up and down along the plane of the base 2.

[0025] Further, a gear 21 is fixedly arranged on the base 2, and a rack 31 engaged with the gear 21 is fixedly arranged on the first supporting plate 3. The gear 21 rotates around a rotating shaft (not shown in the figure) at the center of the gear 21, one side of the rotating shaft is fixedly connected with a rope ring 24, or the rotating shaft extends to the rope ring 24, a pull rope 23 is wound on the rope ring 24, one end of the pull rope 23 is fixed on the rotating shaft of the gear 21, and the other end of the pull rope 23 is connected with a power source. Here, the pull rope 23 is a rigid metal rope, preferably a steel rope. In order to intuitively show the structural relationship, in the embodiment, the external fixed point 5 is shown as a handle, and in actual use, the external fixed point 5 can be a seat or other fixed components, and the utility model is not limited in this regard.

[0026] In addition, a sliding rail 26 is fixedly arranged on the base 2, a sliding block 33 is fixedly arranged on the first supporting plate 3, the sliding block 33 is clamped on the sliding rail 26, and the sliding block 33 slides along the sliding rail 26. At least two sliding blocks 33 are arranged on each sliding rail 26. In other embodiments, a sliding block can be fixedly arranged on the base, and a sliding rail can be fixedly arranged on the first supporting plate, and the utility model is not limited in this regard.

[0027] Further, the folding leg support further comprises a second supporting plate 4, and the surfaces of the first supporting plate 3 and the second supporting plate 4 that are in contact with the human body are each provided with an anti-skid pattern. A horizontal shaft is fixedly arranged at the end of the first supporting plate 3, an axle ring is arranged on one side of the second supporting plate 4, the first supporting plate 3 and the second supporting plate 4 are connected through the axle ring and the horizontal shaft, the axle ring is sleeved outside the horizontal shaft, and the horizontal shaft rotates in the axle ring, that is, the second supporting plate 4 can rotate around the end of the first supporting plate 3 on one side, and the second supporting plate 4 can be manually opened or folded relative to the first supporting plate 3. In other embodiments, an axle ring can be fixedly arranged at the end of the first supporting plate, and a horizontal shaft can be arranged on one side of the second supporting plate, and the utility model is not limited in this regard.

[0028] The folding leg support for seat provided by the embodiment further comprises a sleeve rod, the sleeve rod comprises a rod sleeve 25 and an inner rod 32, the rod sleeve 25 is movably sleeved on the outer side of the inner rod 32, the rod sleeve 25 is fixed on the base 2, and the inner rod 32 is fixed on the first supporting plate 3. In the embodiment, the rod sleeve 25 and the inner rod 32 move relative to each other along the length direction of the sleeve rod, the rod sleeve 25 and the inner rod 32 are connected through a tension spring, the tension spring is arranged in the inner side of the rod sleeve 25, and the tension spring applies a spring force to pull the inner rod 32 back to the inner side of the rod sleeve 25 when the inner rod 32 is pulled out of the rod sleeve 25. In other embodiments, the rod sleeve 25 can be fixed on the first supporting plate 3, and the inner rod 32 can be fixed on the base 2, and the utility model is not limited in this way.

[0029] The utility model further provides a kind of seat, including seat frame, chair back and chair pad, chair back and chair pad are installed on seat frame, and folding leg support for seat is installed on seat frame. Here, the both sides of seat frame are rotatably connected with the one end of two swing arms fixed point rotation, i.e. the both sides of the armrest end of seat frame, each is provided with a rotating shaft that can be rotated for swing arm and seat mounting point 11, swing arm 1 is sleeved on rotating shaft by swing arm and seat mounting point 11, and swing arm 1 can rotate around rotating shaft. When swing arm rotates to maximum amplitude, the position locking of swing arm is stopped. Stop function can be realized by setting spring buckle on swing arm or seat. Since lock catch stop function is prior art in the industry, it will not be described here.

[0030] Working principle:

[0031] Swing arm 1 is rotated to the front of seat, and base 2 and first supporting plate 3 are pushed forward. Since external fixed point 5 is fixed, when swing arm 1 swings forward and away from external fixed point 5, pull rope 23 is pulled out of rope ring 24, rope ring 24 rotates, and gear 21 is rotated on rack 31. Since gear 21 is fixed on base 2, and rack 31 is fixed on first supporting plate 3, when rack 31 is displaced relative to gear 21, first supporting plate 3 is moved relative to base 2 in the length direction of rack 31. When first supporting plate 3 moves relative to base 2, slider 33 slides along slide rail 26, to avoid trajectory deviation in the direct movement of first supporting plate 3 relative to base 2. When swing arm 1 is rotated to specified amplitude, swing arm 1 is stopped and locked to fixed position, and no longer moves. At this time, second supporting plate 4 can be manually opened, to realize foot support function.

[0032] When leg support needs to be retracted, the stop of swing arm 1 is unlocked, and inner rod 32 is pulled back to rod sleeve 25 due to the action of tension spring between inner rod 32 and rod sleeve 25. Rod sleeve 25 is fixed on base 2, and inner rod 32 is fixed on first supporting plate 3. Under the action of tension spring, first supporting plate 3 is pushed back to its initial position on base 2. Gear 21 returns to initial position along rack 31, and pull rope 23 is rewound into rope ring 24. At this time, second supporting plate 4 can be manually rotated towards first supporting plate 3, to retract second supporting plate 4 and close foot support function.

[0033] The above merely describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. A folding leg rest for a seat, characterized by, The device comprises a swing arm, a base and a first supporting plate. One end of the swing arm is fixed to rotate, the base is fixedly connected with the other end of the swing arm, and the first supporting plate is slidably installed on the base. The sliding direction of the first supporting plate on the base is consistent with the radial direction of the arc track formed by the rotation of the base with the swing arm.

2. The folding leg rest for a seat according to claim 1, wherein A gear is fixedly installed on the base, and a rack engaged with the gear is fixed on the first supporting plate.

3. The folding leg rest for a seat according to claim 2, wherein A rope loop is arranged on one side of the rotating shaft of the gear, a pull rope is wound on the rope loop, one end of the pull rope is fixed on the rope loop, and the other end of the pull rope is fixed on the outside.

4. The folding leg rest for a seat according to claim 1, wherein A slide rail or a slide block is fixed on the base, a slide block or a slide rail is fixed on the first supporting plate, the slide block is clamped on the slide rail, and the slide block slides along the slide rail.

5. The folding leg rest for a seat as claimed in claim 1, wherein The device further comprises a second supporting plate, a horizontal shaft or a shaft loop is fixed on the end of the first supporting plate, and a shaft loop or a horizontal shaft is arranged on one side of the second supporting plate. The shaft loop is sleeved on the outside of the horizontal shaft, and the horizontal shaft rotates in the shaft loop.

6. The folding leg rest for a seat as claimed in claim 1, wherein A sleeve rod is further arranged, which comprises a rod sleeve and an inner rod. The rod sleeve is movably sleeved on the outside of the inner rod, the rod sleeve is fixed on the base, the inner rod is fixed on the first supporting plate, and the rod sleeve and the inner rod are connected through a tension spring.

7. The folding leg rest for a seat according to any one of claims 1 to 6, characterized in that, Anti-skid patterns are arranged on the surfaces of the first supporting plate and the second supporting plate.

8. A seat comprising a seat frame, a seat back and a seat cushion, the seat back and the seat cushion being mounted to the seat frame, characterized in that The device has the folding leg supporting plate for a seat as claimed in any one of claims 1 to 7, which is installed on a seat frame.

9. The seat of claim 8, wherein, The two swing arms are rotatably connected with the ends fixed to rotate on the seat frame.

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