CN215705866U

CN215705866U - Chair leg support

Info

Publication number: CN215705866U
Application number: CN202122481919.5U
Authority: CN
Inventors: 叶耀强
Original assignee: Dongguan Veituoli Auto Parts Co ltd
Current assignee: Dongguan Veituoli Auto Parts Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-02-01
Anticipated expiration: 2031-10-14

Abstract

The utility model discloses a chair leg support, comprising: a base; the two ends of the rotating frame are respectively and rotatably connected with the base and the leg supporting plate; a linkage assembly comprising a plurality of links, the plurality of links comprising: a first connecting rod rotatably connected with the base, a second connecting rod rotatably connected with the leg supporting plate, and at least one intermediate connecting rod connected between the first connecting rod and the second connecting rod, wherein any one of the intermediate connecting rods is rotatably connected with the rotating frame; the driving piece drives the connecting rod assembly to unfold or fold through the driving piece so as to drive the leg supporting plate to open or fold. The folding and unfolding of the leg supporting plate are realized by the connecting rod assembly and the driving piece, and the fixed end and the driving end of the driving piece are respectively connected to different connecting rods in the connecting rod assembly, so that the driving piece can be matched with the folding action of the connecting rod assembly, the leg supporting plate is fully folded, the thickness of the folded leg supporting plate is reduced, and the aim of saving the space in the vehicle is fulfilled.

Description

Chair leg support

Technical Field

The utility model relates to the technical field of automobile accessories, in particular to a seat leg support.

Background

As automobiles become more popular, consumer pursuits for automobiles have become increasingly inclined toward various levels of comfort, and seats are one of the major factors affecting ride comfort.

At present, many automobile manufacturers add a leg support for passengers to put legs for the automobile seat, and the leg support is unfolded and folded by using a motor and a control assembly so as to be convenient for the passengers to use when needed. However, in the existing leg support of the automobile seat, due to the occupied space of the driving piece, the leg support plate is difficult to be fully folded in the folding process, and more space in the automobile needs to be occupied.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a seat leg support, which solves the problems that the automobile seat leg support in the prior art is difficult to fully fold when folded and needs to occupy more space in an automobile.

In order to achieve the above purpose, the present invention provides the following technical solutions:

a leg rest for a seat, applied to the seat, comprises:

a base connected to the seat;

one end of the rotating frame is rotatably connected with the base, and the other end of the rotating frame is rotatably connected with the leg supporting plate;

a linkage assembly comprising a plurality of links, the plurality of links comprising: a first connecting rod rotatably connected with the base, a second connecting rod rotatably connected with the leg supporting plate, and at least one intermediate connecting rod connected between the first connecting rod and the second connecting rod, wherein any one of the intermediate connecting rods is rotatably connected with the rotating frame;

the driving piece is provided with a fixed end and a driving end, and the fixed end and the driving end are respectively connected to different connecting rods; the connecting rod component is driven to unfold or fold through the driving component so as to drive the leg supporting plate to open or fold.

Optionally, a third connecting rod is connected between the first connecting rod and the second connecting rod, and the third connecting rod is rotatably connected to the rotating frame.

Optionally, two ends of the base are respectively provided with the connecting rod assembly;

an installation rod is connected between the two third connecting rods, and the driving piece is fixedly connected to the installation rod to form the fixed end;

a transmission rod is connected between the two second connecting rods; the driving part is connected with a screw rod in a driving mode, one end, far away from the driving part, of the screw rod is connected with the transmission rod, and the screw rod forms the driving end.

Optionally, the driving part comprises a driving shaft, a worm wheel is connected to the driving shaft in a driving manner, and the worm wheel is in transmission connection with the screw rod.

Optionally, any one of the intermediate connecting rods is fixedly connected with an auxiliary rod, and one end of the auxiliary rod, which is far away from the intermediate connecting rod, is provided with a roller.

Optionally, the leg rest of the seat further comprises a control unit, and the control unit comprises a PCB module electrically connected to the driving member.

Optionally, the control unit further includes a limit switch for sensing a motion state of the intermediate link, the limit switch is electrically connected to the PCB module, and the PCB module controls the driving member to stop working according to the motion state of the intermediate link.

Optionally, the swivel frame is connected to the leg rest by a hinge assembly, the hinge assembly including a first hinge connected to the swivel frame and a second hinge connected to the leg rest.

Optionally, a guide groove is formed in the base, a sliding limiting part is arranged on the rotating frame, and the sliding limiting part is slidably limited in the guide groove.

Optionally, the guide slot is arcuate.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a seat leg support, which is characterized in that a connecting rod assembly and a driving piece are utilized to fold and unfold a leg support plate, and the fixed end and the driving end of the driving piece are respectively connected to different connecting rods in the connecting rod assembly, so that the driving piece can be matched with the folding action of the connecting rod assembly, the leg support plate is fully folded, the thickness of the folded leg support plate is reduced, and the aim of saving the space in a vehicle is fulfilled.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic perspective view of a leg rest of a seat according to the present invention;

FIG. 2 is a side view of a leg rest for a seat according to the present invention;

fig. 3 is a partial structural schematic view of a leg rest of a seat provided by the utility model.

In the above figures: 11. a base; 101. a guide groove; 12. a leg rest; 131. a first hinge; 132. a second hinge; 201. a first link; 202. a second link; 203. a third link; 21. a rotating frame; 22. an auxiliary lever; 221. a roller; 31. a drive member; 311. mounting a rod; 312. a screw; 32. a transmission rod; 41. a PCB module; 42. and a limit switch.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the referred devices or elements must have the specific orientations, be configured to operate in the specific orientations, and thus are not to be construed as limitations of the present invention.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1 to 3 in combination, a leg rest for a seat according to an embodiment of the present invention includes a leg rest assembly mounted on the seat, the leg rest assembly including a leg rest 12 capable of being unfolded or folded with respect to the seat; when the leg rest 12 is open, it can provide support for the user's legs.

In this embodiment, this leg holds in palm subassembly includes:

the base 11 is connected with the seat, and particularly can be connected with the bottom of the seat;

one end of the rotating frame 21 is rotatably connected with the base 11, and the other end of the rotating frame 21 is rotatably connected with the leg supporting plate 12;

link assembly, link assembly include a plurality of connecting rods, and a plurality of connecting rods include: a first link 201 rotatably connected to the base 11, a second link 202 rotatably connected to the leg rest 12, and at least one intermediate link between the first link 201 and the second link 202; the first connecting rod 201, the second connecting rod 202 and at least one intermediate connecting rod rotate relatively to form a foldable structure, and any intermediate connecting rod is rotatably connected with the rotating frame 21;

wherein, be equipped with driving piece 31 on the link assembly, driving piece 31 has stiff end and drive end, and stiff end and drive end are connected respectively in different connecting rods.

The base 11 is provided with a guide groove 101, the rotating frame 21 is provided with a sliding limiting piece, and the sliding limiting piece is limited in the guide groove 101 in a sliding manner. Specifically, the guide groove 101 has an arc shape.

Further, the swivel frame 21 is connected to the leg rest 12 by a hinge assembly including a first hinge 131 connected to the swivel frame 21 and a second hinge 132 connected to the leg rest 12.

The link assembly is unfolded or folded by the driving of the driving member 31, and the leg rest 12 is opened or closed relative to the seat by the connection of the rotating frame 21.

In the embodiment of the present embodiment, a third link 203 is connected between the first link 201 and the second link 202, and the third link 203 is rotatably connected to the rotating frame 21. It will be appreciated that only one link is utilized as the intermediate link in this embodiment; in other embodiments, a plurality of intermediate links may be provided and connected therebetween by a connection member for limiting the deployment angle of the plurality of intermediate links to ensure that the folding or deployment of the link assembly is smoothly performed.

Specifically, in this embodiment, two ends of the base 11 are respectively provided with a link assembly.

Wherein, a mounting rod 311 is connected between the two third connecting rods 203, and the driving member 31 is fixedly connected to the mounting rod 311 to form a fixed end;

a transmission rod 32 is connected between the two second connecting rods 202; the driving member 31 is connected with a screw 312 in a driving manner, one end of the screw 312 far away from the driving member 31 is connected with the transmission rod 32, and the screw 312 forms a driving end.

It can be understood that the mounting position of the mounting rod 311 is located at one end of the third connecting rod 203 close to the second connecting rod 202, and the mounting position of the transmission rod 32 is located at one end of the second connecting rod close to the leg support plate 12, therefore, along with the folding between the second connecting rod 202 and the third connecting rod 203, the driving member 31 is gradually changed from the horizontal state to the vertical state to match the folding action of the connecting rod assemblies, and the situation that the leg support plate 12 cannot be fully folded due to the horizontal length of the driving member 31 when the folding is completed is avoided.

In this embodiment, the driving member 31 includes a driving shaft, and a worm gear is drivingly connected to the driving shaft and is drivingly connected to the screw 312. Based on the above structure, the extending direction of the screw 312 is perpendicular to the extending direction of the driving shaft, which is beneficial to ensure the sufficient folding of the leg support plate 12.

Furthermore, an auxiliary rod 22 is fixedly connected to any one of the intermediate links, and a roller 221 is disposed at one end of the auxiliary rod 22 away from the intermediate link. In this embodiment, the auxiliary rod 22 is disposed on the third link 203 and located at an end of the third link 203 far from the first link 201, and the extending direction of the auxiliary rod 22 is substantially the same as the extending direction of the third link, so that the rolling connection between the roller 221 and the ground can be ensured during the folding or unfolding process of the link assembly, and the stability of the leg rest 12 during the folding or unfolding process can be improved.

The leg rest of the seat provided by the embodiment further comprises a control unit, and the control unit comprises a PCB module 41 electrically connected with the driving member 31. It is understood that the user can control the control unit by means of a peripheral button or a wireless connection terminal, and thus open or close the leg rest 12.

In the prior art, an angle memory function is usually provided in the PCB module 41, so that when the link assembly is folded or unfolded to a predetermined angle, the driving member 31 stops working, and the fuse is prevented from being fused due to an excessive current on the driving member 31.

In consideration of the high cost of the existing setting method for the predetermined angle, in this embodiment, the control unit further includes a limit switch 42 for sensing the motion state of the intermediate link, the limit switch 42 is electrically connected to the PCB module 41, and the PCB module 41 controls the driving member 31 to stop operating according to the motion state of the intermediate link. The limit switch 42 is arranged to replace a memory function to realize the setting of a preset angle, so that the cost can be further reduced, and the popularization of the product to the market is facilitated.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A seat leg support is applied to a seat and is characterized by comprising:

a base connected to the seat;

2. The leg rest of claim 1, wherein a third link is connected between the first link and the second link, the third link being rotatably connected to the swivel.

3. The leg rest of a seat as claimed in claim 2, wherein the base is provided at each end with one of said link assemblies;

4. The leg rest of claim 3, wherein the drive member comprises a drive shaft having a worm gear drivingly connected thereto, the worm gear being drivingly connected to the screw.

5. The leg rest of a seat as claimed in claim 1, wherein an auxiliary rod is fixedly connected to any one of the intermediate links, and a roller is provided at an end of the auxiliary rod away from the intermediate link.

6. The seat leg rest of claim 1, further comprising a control unit including a PCB module electrically connected to the drive member.

7. The chair leg support according to claim 6, wherein the control unit further comprises a limit switch for sensing the motion state of the intermediate link, the limit switch is electrically connected with the PCB module, and the PCB module controls the driving member to stop working according to the motion state of the intermediate link.

8. The seat leg rest of claim 1, wherein the swivel frame is coupled to the leg rest by a hinge assembly, the hinge assembly including a first hinge coupled to the swivel frame and a second hinge coupled to the leg rest.

9. The leg rest of a seat as claimed in claim 1, wherein a guide slot is provided on the base, and a slide stopper is provided on the rotary frame, the slide stopper being slidably stopped in the guide slot.

10. The leg rest of claim 9, wherein the guide slot is arcuate.