CN217623256U

CN217623256U - Seat leg holds in palm mechanism and seat

Info

Publication number: CN217623256U
Application number: CN202220540095.6U
Authority: CN
Inventors: 王明祥; 姬祖春
Original assignee: Mingyang Technology Suzhou Co ltd
Current assignee: Mingyang Technology Suzhou Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-10-21
Anticipated expiration: 2032-03-11

Abstract

The utility model discloses a chair leg support mechanism and a chair, wherein a hinge joint is arranged on a chair framework; the lifting arm is movably arranged on the seat framework by virtue of the hinge joint; the lifting arm is provided with a first sliding holding part and a second sliding holding part; one end of the first connecting rod is hinged to the seat framework; the first sliding component and the second sliding component are positioned between the two lifting arms, and the first sliding component part passes through the first sliding retaining part and then is hinged with one end of the connecting rod, which is far away from the seat framework; two ends of the second sliding component are arranged in the second sliding holding part in a sliding way; the first sliding component and the second sliding component are respectively provided with a first sliding left-right direction keeping part and a fourth sliding keeping part, and the first sliding left-right direction keeping part and the fourth sliding keeping part are both vertical to the extending direction of the lifting arm; one ends of the second connecting rod and the third connecting rod, which are close to the seat framework, are hinged with the lifting arm, and one ends of the second connecting rod and the third connecting rod, which are far away from the seat framework, are movably connected into the fourth sliding retaining part respectively; the driver drives the lifting arm to rotate.

Description

Seat leg support mechanism and seat

Technical Field

The utility model belongs to the technical field of car seat, specifically speaking relates to a seat leg holds in palm mechanism and seat.

Background

Along with people constantly improve to the requirement in passenger car travelling comfort and space, people propose higher requirement to the travelling comfort of seat, provide leg support mechanism in many motorcycle types, through the support to human shank, reduce the unsettled sense of shank to reduce the shank discomfort that produces in the long-time driving process, improved and taken the travelling comfort.

The leg support adjusting device for the seat disclosed in the prior art mainly comprises an angle adjuster and a link mechanism, wherein a fixing piece of the angle adjuster is used for being connected with a fixing piece of the seat, a power input rod of the link mechanism is connected with a rotation output piece of the angle adjuster, and a power output rod of the link mechanism is used for being connected with a leg support so as to adjust the posture of the leg support to be switched between an extending state and a retracting state. The angle adjuster is adopted as a motion output component in the scheme, so that the angle adjuster has the characteristics of simple and reliable structure, obviously, compared with the scheme of adopting a screw rod and nut mechanism as motion output, the utility model has the advantages of small occupied space and convenience for overall arrangement in the vehicle; meanwhile, more passenger activity spaces are reserved, and the reliable guarantee is improved for improving the user experience. In addition, the angle adjuster is a closed part, can prevent dust and sundries, and has low maintenance cost. However, the motor is fixed with the driving rod, the motor needs to extend out along with the driving rod, and the whole leg support mechanism occupies a large space after being extended, so that the leg support mechanism is relatively overstaffed.

In addition, the prior art also discloses another kind of seat and leg rest mechanism thereof, wherein, this leg rest mechanism includes: the driving assembly is arranged on the fixed bracket; the leg support assembly comprises a first leg support component and a second leg support component, wherein the first leg support component is provided with a hole-shaped or groove-shaped sliding matching part, the second leg support component is connected with the first leg support component in a sliding mode along the extending direction of the sliding matching part, and the upper end part of the first leg support component forms a first hinge point; the coupling beam assembly comprises a power input part and a power output part, the power input part is connected with a driving part of the driving assembly, the power output part is connected with the second leg support component, and when the driving assembly is started, the power output part can drive the first leg support component to rotate relative to the first hinge point so that the leg support assembly is switched between a retracted state and an extended state; further, in the extended state, the second leg rest assembly extends relative to the first leg rest assembly, and in the retracted state, the second leg rest assembly retracts relative to the first leg rest assembly. However, due to the particularity of the arrangement of the connecting rod structure, some rotary joints need to pass through dead points in the sliding process, so that the problem of unsmooth adjustment is caused.

Based on the existing problems, the department provides a set of novel leg support mechanism.

Disclosure of Invention

The utility model aims at providing a seat leg holds in palm mechanism and seat, its technical problem who anticipates to exist in solving the background art.

In order to solve the technical problem, the purpose of the utility model is to realize the following:

a chair leg support mechanism comprises a hinge joint, a lifting arm, a first connecting rod, a first sliding component, a second connecting rod, a third connecting rod, a second sliding component and a driver;

the articulator is arranged on the seat framework;

the lifting arm is hinged with the seat framework through the hinge; the lifting arm is provided with a first sliding holding part and a second sliding holding part in parallel along the extending direction of the lifting arm;

one end of the first connecting rod is hinged to the seat framework; the other end is hinged with the first sliding component;

a first slide member and a second slide member, the first slide member and the second slide member being located between the lift arms, the first slide member partially passing through the first slide holding portion; the second slide member passes through the second slide holding portion; the first sliding component and the second sliding component are respectively provided with a first sliding left-right direction keeping part and a fourth sliding keeping part, and the first sliding left-right direction keeping part and the fourth sliding keeping part are both vertical to the extending direction of the lifting arm;

a second link and a third link; the second connecting rod and the third connecting rod are overlapped in a scissor shape, one ends of the second connecting rod and the third connecting rod, which are close to the seat framework, are respectively hinged with the lifting arm, and the other ends of the second connecting rod and the third connecting rod, which are far away from the seat framework, are respectively movably connected into the fourth sliding and holding part; the second connecting rod and the third connecting rod are respectively provided with a second connecting rod sliding and holding part and a third connecting rod sliding and holding part, and the second connecting rod sliding and holding part and the third connecting rod sliding and holding part are movably arranged in the first sliding left-right direction holding part;

the driver drives the two lifting arms to synchronously rotate around the axis of the hinge joint, so that the first sliding part and the second sliding part are far away from or close to the seat framework along the extending directions of the first sliding retaining part and the second sliding retaining part of the lifting arms.

On the basis of the above scheme and as a preferable scheme of the scheme: the fixing support is fixedly arranged at one end, far away from the backrest, of the seat framework; the hinge is arranged on the fixed bracket; the lifting arm is hinged to the fixed support through the hinge.

On the basis of the above scheme and as a preferable scheme of the scheme: the first sliding holding part and the second sliding holding part are straight or curved sliding grooves formed in the lifting arm.

On the basis of the above scheme and as a preferable scheme of the scheme: the lifting arm is provided with a hinge shaft, the second connecting rod is provided with a second connecting rod hinge hole, the third connecting rod is provided with a third connecting rod hinge hole, and the second connecting rod hinge hole and the third connecting rod hinge hole are hinged to the lifting arm through the hinge shaft.

On the basis of the above scheme and as a preferable scheme of the scheme: a second connecting rod hinge shaft is arranged at one end, far away from the second connecting rod hinge hole, of the second connecting rod, and a third connecting rod hinge shaft is arranged at one end, far away from the third connecting rod hinge hole, of the third connecting rod; the fourth sliding holding part is a straight or curved chute, and the second connecting rod hinge shaft and the third connecting rod hinge shaft are arranged in the fourth sliding holding part in a sliding manner.

On the basis of the above scheme and as a preferable scheme of the scheme: the first sliding left-right direction holding portion is a straight or curved sliding groove, and the second link sliding holding portion and the third link sliding holding portion are slidably disposed in the first sliding left-right direction holding portion.

On the basis of the above scheme and as a preferable scheme of the scheme: the driver is any one of an angle adjusting motor, a gas rod, a cylinder and a push rod motor.

On the basis of the above scheme and as a preferable scheme of the scheme: still include middle connecting rod, middle connecting rod with both ends respectively with lifting arm fixed connection, joint or interlock, so that middle connecting rod with the lifting arm synchronous rotation.

Also discloses an automobile seat, which comprises the seat leg support mechanism.

Compared with the prior art, the utility model outstanding and profitable technological effect is: 1 provides a brand-new leg holds in palm mechanism, realizes the extension of the maximum width of a leg support range, avoids leg support in the past because the connecting rod structure passes through the motion dead point, the regulation that causes is smooth and easy problem. 2 the problem of excessive space occupation after the leg support is unfolded, which influences the beauty. 3. A variety of actuation means are provided, such as manual or motorized functions.

Drawings

FIG. 1 is a schematic view of the overall construction of the present seat;

fig. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic view of the extended state of the present invention;

FIG. 4 is an exploded view of the leg rest mechanism of the present invention;

FIG. 5 is a schematic view of the first slide member;

FIG. 6 is a schematic view of a second slide member construction;

FIG. 7 is a schematic view of the second and third link structures;

FIG. 8 is a mechanical schematic of the lifting portion of the legrest mechanism;

FIG. 9 is a mechanical schematic of an extension of the leg rest mechanism;

FIG. 10 is a mechanical schematic diagram of the leg rest mechanism using pneumatic rod/cylinder actuation;

fig. 11 is a mechanical schematic diagram of the leg rest mechanism driven by a lead screw.

1 seat frame, 2 leg rest mechanism, 21 fixed bracket, 22 hinge, 23 lifting arm, 231 first slide holding portion, 232 second slide holding portion, 24 first link, 25 first slide part, 251 first slide extending direction holding portion, 252 first slide left and right direction holding portion, 26 second link, 261 second link hinge hole, 262 second link slide holding portion, 263 second link hinge shaft, 27 third link, 271 third link hinge hole, 272 third link slide holding portion, 273 third link hinge shaft, 28 second slide part, 281 second slide extending direction holding portion, 282 second slide left and right direction holding portion, 29 driver, 30 intermediate link, O ' driver fixed point rotation axis, O '1 lifting arm rotation axis, O '2 link 24 hinge rotation axis with leg rest fixed bracket 21, O '3 first link hinge point rotation axis with first slide part 25, O '4 lifting arm hinge point with third link rotation axis, O '5 lifting arm hinge point with second link rotation axis, O '6 hinge point with second slide holding portion, 7 second slide left and right direction holding portion; the figure has (the reference numbers have R and L characters and are parts which are symmetrically arranged on the left side and the right side of the seat framework and are the same).

Detailed Description

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art on the basis of the given examples without making any creative effort fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and operate, and thus, should not be construed as limiting the present application.

In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

A leg rest mechanism 2 of a seat includes a hinge 22, a lift arm 23, a link 24, a first slide member 25, a link 26, a link 27, a second slide member 28, and an actuator 29.

The hinges 22 are symmetrically arranged, and the hinges 22 are arranged on the seat framework 1; the lifting arms 23 are symmetrically arranged and movably arranged on the seat framework by virtue of the hinge joint 22; in this embodiment, the seat further preferably includes a fixing bracket 21, where the fixing bracket 21 is fixedly disposed at an end of the seat frame away from the seat back; the hinge 22 is arranged on the fixed bracket 21; the lifting arm 23 is hinged to the fixed bracket 21 by means of a hinge 22. In the present embodiment, the fixing bracket 21 is preferably fixed to the seat frame 1 by means of fastening with a bolt, caulking, welding, or the like. It is to be noted in particular that: the fixed bracket 21 can also be directly integrated into the seat frame, and the articulator 22 is directly articulated with the seat frame 1. It should be noted that the hinge 22 in the present embodiment may be a rivet or a member capable of maintaining the rotation of the axis, such as a recliner, and the present invention preferably adopts a recliner assembly.

And one end of the first connecting rod 24 is hinged on the fixed bracket 21. Each lift arm 23 is provided with a first slide holding portion 231 and a second slide holding portion 232 in parallel in the extending direction thereof; the effect of holding portion is the sustainability of guaranteeing the motion, can be the straight line also can be the curve, and specific appearance can be the straight line spout, also can be the guide arm, the utility model discloses the first slip holding portion 231 of preference and second slip holding portion 231 are for seting up the straight line spout on lifting arm 23.

The first sliding part 25 and the second sliding part 28, the first sliding part 25 and the second sliding part 28 are positioned between the two lifting arms 23, and the first sliding part 25 partially passes through the first sliding holding part 231 and then is hinged with one end of the connecting rod 24 far away from the seat framework; both ends of the second slide member 28 are slidably disposed in the second slide holding portion 232; the first slide member 25 and the second slide member 28 are respectively provided with a first slide left-right direction holding portion 252 and a fourth slide holding portion 282, and the first slide left-right direction holding portion 252 and the fourth slide holding portion 282 are perpendicular to the extending direction of the lift arm 23. In the present embodiment, the first link 24 is preferably hinged to the fixed bracket 21 and also to the first slide member 25. It is specifically noted that: the link 24 may also be directly hinged to the seat cushion frame assembly 1, the key being whether the fixed bracket 21 is understood to be part of the seat frame 1. That is, the rotation axis O'2 of the hinge point of the second link 24 and the fixed bracket 21 may be on the fixed bracket 21 or on the seat frame 1.

A second link 26 and a third link 27; the second link 26 and the third link 27 are overlapped in a scissor-like manner, and one ends of the second link and the third link close to the seat frame are respectively hinged with the lifting arm 23, and the other ends far away from the seat frame are respectively movably connected in the fourth sliding holding part 282; the second link 26 and the third link 27 are respectively provided with a second link sliding maintaining part 262 and a third link sliding maintaining part 272 between the overlapping position of the two and the hinged position of the two and the lifting arm 23, and the second link sliding maintaining part 262 and the third link sliding maintaining part are movably arranged in the first sliding left-right direction maintaining part 252; the lift arm 23 is provided with a hinge shaft, the second link 26 is provided with a second link hinge hole 261, the third link 27 is provided with a third link hinge hole 271, and the second link hinge hole 261 and the third link hinge hole 271 are hinged to the lift arm 23 through the hinge shaft. A second link hinge shaft 263 is arranged at one end of the second link 26, which is far away from the second link hinge hole 261, and a third link hinge shaft 263 is arranged at one end of the third link 27, which is far away from the third link hinge hole 261; the fourth slide holding portion 282 is a linear or curved slide groove, preferably a linear slide groove. The second link hinge shaft 263 and the third link hinge shaft 263 are slidably disposed in the fourth slide maintaining portion 282. In the present embodiment, the first sliding left-right direction holding portion 252 is a linear or curved sliding groove, and preferably a linear sliding groove. The second link slidably holding portion 262 and the third link slidably holding portion 272 are slidably provided in the first sliding left-right direction holding portion 252. The first sliding member 25 is hinged to the first link 24 through a hinge point of the first link 24 to the first sliding member 25, and a rotation axis O' 3. Specifically, the first slide extending direction holding portion 251 is engaged with the first slide holding portion 231, and the first slide left-right direction holding portion 252 is engaged with the second link slidably holding portion 262 and the third link slidably holding portion 272, respectively; the second link hinge hole 261 is hinge-coupled to the lift arm 23 through a rotation axis O '5 of the lift arm 23 and a second link hinge point, the link slide holder 262 is hinge-coupled to the first slide left-right direction holder 252 of the first slide member 25, and the link hinge shaft 263 is hinge-coupled to the second slide left-right direction holder 282 of the second slide member 28 through a rotation axis O'6 of the second link and second slide member hinge point. The link hinge hole 271 is hinge-coupled to the lift arm 23L through a hinge point rotation axis O '4 of the lift arm 23 and the third link 27, the link slidably-holding portion 272 is hinge-coupled to the first sliding left-right direction holding portion 252 of the first sliding member 25, and the link hinge shaft 263 is hinge-coupled to the second sliding left-right direction holding portion 282 of the second sliding member 28 through a second link and second sliding member hinge point rotation axis O' 6. The second slide extending direction maintaining portion 281 is engaged with the second slide maintaining portion 232 of the lift arm 23, the second slide left and right direction maintaining portion 282 is hinged with the third link hinge shaft 273 of the third link 27 through the second link hinge point rotation axis O '7 with the second slider, and the second slide left and right direction maintaining portion 282 is hinged with the second link hinge shaft 263 of the second link 26 through the second link hinge point rotation axis O'6 with the second slider.

The actuator 29, the actuator 29 drives the two lifting arms 23 to rotate synchronously around the axis of the articulator 22, so that the first sliding part 25 and the second sliding part 28 move away from or close to the seat frame along the extending direction of the first sliding retaining part 231 and the second sliding retaining part 232 of the lifting arms 23. The driver 29 is any one of an angle adjusting motor, an air rod, an air cylinder and a push rod motor; when the driver 29 is a gas rod/cylinder, the gas rod/cylinder drives the lifting arm 23 to rotate upward and downward by changing the extension length; as shown in fig. 10. When the driver 29 is a lead screw motor, the lead screw motor drives the lifting arm 23 to rotate up and down by changing the length of the lead screw, as shown in fig. 11. The present embodiment is preferably a recliner motor, see fig. 8.

The lifting arm mechanism further comprises an intermediate connecting rod 30, and two ends of the intermediate connecting rod 30 are fixedly connected, clamped or occluded with the lifting arm 23 respectively, so that the intermediate connecting rod 30 and the lifting arm 23 rotate synchronously.

The working principle of the embodiment is as follows: the driver 29 is an angle adjusting motor, and the angle adjusting motor drives the articulators 22 on the left and right sides to synchronously rotate through the middle connecting rod 30, so as to drive the lifting arms 23 on the left and right sides to rotate upwards.

In the process of the lift arm 23 being lifted up, the first slide extending direction holding portion 251 slides forward in the first slide holding portion 231 of the lift arm 23 due to the first link 24. Meanwhile, since the lift arm 23 is hinged to the second and

third links

26 and 27, the second and

third links

26 and 27 are engaged with the first sliding member 25, and the second and

third links

26 and 27 are engaged with the second sliding member 28, the second sliding member 28 slides forward in the second sliding holder 232 of the lift arm 23. Therefore, based on the above matching relationship of the joints, when the lifting arm 23 is lifted upwards, the second sliding part 28 moves forwards at the same time, so as to realize the rotation opening and extending functions of the leg rest mechanism 2. Conversely, the leg rest mechanism 2 can be retracted by driving the rotation shaft 29 to rotate in the reverse direction. Therefore, the maximum amplitude extension of the leg support is realized through the leg support adjusting device, and the problem that the conventional leg support is unsmooth in adjustment due to the fact that a connecting rod structure passes through a movement dead point is solved; the problem of excessive occupation space after the leg support is unfolded, influence pleasing to the eye is solved. The flexible implementation provides multiple driving modes.

Example two

In addition, a plurality of driving modes are provided so as to realize the manual and electric functions.

The difference from the first embodiment is that the middle link 30 is provided with a rotating part, the rotating part is exposed outwards through the hinge joint and the fixed bracket, and the opening and the retraction of the leg rest mechanism 2 can be realized by installing a manual driving part such as a crank on the middle link 30 to drive the middle link 30 to rotate forward and backward. Preferably, the middle connecting rod 30 is of a spline shaft structure, the spline shaft is matched with the hinge, and the crank is provided with a spline groove, so that the crank and the end part of the middle connecting rod 30 are assembled to drive the middle connecting rod 30 to rotate, and the leg support mechanism 2 is opened and retracted. Therefore, the manual function is further increased, and more configuration selection spaces are provided for the vehicle enterprises or users.

EXAMPLE III

Also discloses an automobile seat, which comprises a leg support mechanism 2 in the first embodiment and the second embodiment; thereby making the car seat possess the leg and hold in the palm the function.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. A seat leg holds in palm mechanism which characterized in that: the lifting device comprises a seat framework (1), a hinge joint (22), a lifting arm (23), a first connecting rod (24), a first sliding part (25), a second connecting rod (26), a third connecting rod (27), a second sliding part (28) and a driver (29);

an articulator (22), the articulator (22) mounted to a seat frame;

the lifting arm (23) is hinged with the seat framework through the hinge (22); the lifting arm (23) is provided with a first sliding holding part (231) and a second sliding holding part (232) in parallel along the extending direction of the lifting arm;

one end of the first connecting rod (24) is hinged to the seat framework; the other end is hinged with the first sliding component (25);

a first slide member (25) and a second slide member (28), the first slide member (25) and the second slide member (28) being located between the lift arms (23), the first slide member (25) partially passing through the first slide holding portion (231); the second slide member (28) passes through the second slide holding portion (232); the first sliding component (25) and the second sliding component (28) are respectively provided with a first sliding left-right direction holding part (252) and a fourth sliding holding part (282), and the first sliding left-right direction holding part (252) and the fourth sliding holding part (282) are both vertical to the extending direction of the lifting arm (23);

a second link (26) and a third link (27); the second connecting rod (26) and the third connecting rod (27) are overlapped in a scissor shape, one ends of the second connecting rod and the third connecting rod, which are close to the seat framework, are respectively hinged with the lifting arm (23), and the ends, which are far away from the seat framework, are respectively movably connected into the fourth sliding and holding part (282); a second link sliding and holding part (262) and a third link sliding and holding part (272) are respectively arranged on the second link (26) and the third link (27), and the second link sliding and holding part (262) and the third link sliding and holding part (272) are movably arranged in the first sliding left-right direction holding part (252);

an actuator (29), wherein the actuator (29) drives the two lifting arms (23) to synchronously rotate around the axes of the articulators (22), so that the first sliding part (25) and the second sliding part (28) are far away from or close to the seat framework along the extending directions of the first sliding retaining part (231) and the second sliding retaining part (232) of the lifting arms (23).

2. A leg rest mechanism for a seat as claimed in claim 1, wherein: the seat is characterized by further comprising a fixed support (21), wherein the fixed support (21) is fixedly arranged on the cushion part of the seat framework (1); the articulator (22) is mounted on the fixed support (21); the lifting arm (23) is hinged to the fixed support (21) by means of the hinge (22).

3. A leg rest mechanism for seats according to claim 1, wherein: the first slide holding portion (231) and the second slide holding portion (232) are linear or curved slide grooves opened in the lift arm (23).

4. A leg rest mechanism for seats according to claim 1, wherein: the lifting arm (23) is provided with a hinge shaft, the second connecting rod (26) is provided with a second connecting rod hinge hole (261), the third connecting rod (27) is provided with a third connecting rod hinge hole (271), and the second connecting rod hinge hole (261) and the third connecting rod hinge hole (271) are hinged to the lifting arm (23) through the hinge shaft.

5. A leg rest mechanism for a seat as claimed in claim 4, wherein: a second connecting rod hinge shaft (263) is arranged at one end, far away from the second connecting rod hinge hole (261), of the second connecting rod (26), and a third connecting rod hinge shaft (273) is arranged at one end, far away from the third connecting rod hinge hole (271), of the third connecting rod (27); the fourth slide retaining portion (282) is a straight or curved sliding groove, and the second link hinge shaft (263) and the third link hinge shaft (273) are slidably disposed in the fourth slide retaining portion (282).

6. A leg rest mechanism for a seat as claimed in claim 1, wherein: the first sliding left-right direction holding portion (252) is a straight or curved sliding groove, and the second link sliding holding portion (262) and the third link sliding holding portion (272) are slidably provided in the first sliding left-right direction holding portion (252).

7. A leg rest mechanism for a seat as claimed in claim 1, wherein: the driver (29) is any one of an angle adjusting motor, an air rod, an air cylinder and a push rod motor.

8. A leg rest mechanism for a seat as claimed in claim 1, wherein: still include middle connecting rod (30), middle connecting rod (30) with both ends respectively with lifting arm (23) fixed connection, joint or interlock, so that middle connecting rod (30) with lifting arm (23) synchronous rotation.

9. An automotive vehicle seat comprising the seat leg rest mechanism of any one of claims 1 to 8.