CN216797072U

CN216797072U - Bracket extension mechanism and seat telescoping device

Info

Publication number: CN216797072U
Application number: CN202121793688.5U
Authority: CN
Inventors: 李晓鸿; 李元坤; 吕战征; 陈晨
Original assignee: Remacro Machinery and Technology Wujiang Co Ltd
Current assignee: Ruimai Technology Co ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-06-24
Anticipated expiration: 2031-08-03

Abstract

The utility model relates to a footrest extension mechanism and a seat extension device, comprising: the device comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first foot rest piece, a linkage rod, a second foot rest piece and a foot rest connecting piece; one end of a second connecting rod is hinged with the first leg rest piece, the other end of the second connecting rod is hinged with the first connecting rod, the first connecting rod is used for being hinged with a linkage support of the seat, one end of a fourth connecting rod is hinged with the second leg rest piece, the other end of the fourth connecting rod is hinged with the third connecting rod, the first leg rest piece is hinged with one end of a linkage rod, and the other end of the linkage rod is hinged with the middle part of the fourth connecting rod; one end of a first connecting piece of the leg rest connecting piece is hinged with the middle part of the second leg rest piece, the other end of the first connecting piece is hinged with one end of the second connecting piece, the other end of the second connecting piece is hinged with the middle part of the second connecting rod, and the middle part of the second connecting piece is hinged with the middle part of the fourth connecting rod. By adopting the utility model, the adjustment flexibility of the footrest extension mechanism can be improved, and the extension length of the footrest extension mechanism can be increased.

Description

Bracket extension mechanism and seat telescoping device

Technical Field

The utility model relates to the technical field of sofa supports, in particular to a footrest extension mechanism and a seat extension device.

Background

With the improvement of living standard of people, functional sofas and seats are more and more common in life. With the wide application of functional sofas, the requirement for the comfort of the sofa seat is higher and higher. Functional seats are typically provided with mechanical extension devices to enable the seat to be adjusted between the position of a sitting, leisure and lying position.

The prior seat device has the following defects: when the seat is extended, the leg rest mechanism is easy to rub and collide with the ground, so that the use of a user is influenced; the leg rest mechanism of the seat can only simply rotate, the whole extension length is short, and the legs and the feet cannot be completely supported in leisure and lying postures, so that the comfort of the seat is influenced;

adopt traditional spout structure among the mechanical stretching device with extension footrest of current, the spout structure produces the noise easily at the in-process that uses, and the spout is worn and torn easily after the repetitious usage, leads to the shank structure to open smoothly or pack up poor structural stability.

SUMMERY OF THE UTILITY MODEL

In view of the above problems of the prior art, it is an object of the present invention to provide a footrest extension mechanism and a seat extension and contraction device that can increase the extension length of a seat footrest by adjusting the structure of a seat footrest extension mechanism, thereby increasing the support for the legs and feet of a user and improving the comfort of the seat.

In order to solve the above problem, the present invention provides a footrest extension mechanism including: the device comprises a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, a first foot rest piece, a linkage rod, a second foot rest piece and a foot rest connecting piece;

one end of the second connecting rod is hinged with the first leg rest, the other end of the second connecting rod is hinged with the first connecting rod, the first connecting rod is used for being hinged with a linkage support of a seat, one end of the fourth connecting rod is hinged with the second leg rest, the other end of the fourth connecting rod is hinged with the third connecting rod, the first leg rest is hinged with one end of the linkage rod, and the other end of the linkage rod is hinged with the middle part of the fourth connecting rod;

the bracket connecting piece comprises a first connecting piece and a second connecting piece, one end of the first connecting piece is hinged to the middle of the second bracket piece, the other end of the first connecting piece is hinged to one end of the second connecting piece, the other end of the second connecting piece is hinged to the middle of the second connecting rod, and the middle of the second connecting piece is hinged to the middle of the fourth connecting rod.

Further, the middle part of the second leg rest is provided with a first limiting part, and when the first limiting part is matched with the second connecting part to abut against the second connecting part, the second leg rest is retracted to the limit position, so that the phenomenon that the leg rest is loosened is prevented.

Furthermore, one end, close to the first connecting rod, of the second connecting rod is provided with a first connecting point, the second connecting rod is hinged to the middle of the third connecting rod at the first connecting point, and the third connecting rod is used for being connected with the linkage support.

Furthermore, a second connecting point is arranged at one end, close to the first foot rest, of the second connecting rod, and the second connecting rod is connected with the second connecting piece at the second connecting point.

Furthermore, a footrest connecting point, a linkage rod connecting point and a connecting piece connecting point are sequentially arranged at one end of the fourth connecting rod, which is close to the second footrest piece;

the fourth connecting rod is connected with the second footrest piece at the footrest connecting point, the fourth connecting rod is connected with the linkage rod at the linkage rod connecting point, the fourth connecting rod is connected with the second connecting piece at the connecting piece connecting point, and the linkage rod connecting point is arranged between the footrest connecting point and the connecting piece connecting point.

Furthermore, a second connecting rod connecting point and a linkage point are arranged on the first foot rest piece, and the distance from the linkage point to the linkage rod connecting point is greater than the distance from the linkage point to the second connecting rod connecting point.

Further, when the footrest extension mechanism is retracted to the limit position, the first footrest member is located above the second footrest member, and the footrest surface of the first footrest member and the footrest surface of the second footrest member are located in the same vertical plane.

Further, when the leg rest extension mechanism extends from the retracted position to the extreme position, the leg rest surfaces of the first and second leg rest members rotate upward, and the first and second leg rest members are spaced apart from each other.

Further, still include the footrest subassembly, the footrest subassembly includes first footrest and second footrest, first footrest with first footrest is connected, the second footrest with second footrest is connected.

The present invention also provides a seat retractor comprising: the footrest extension mechanism is linked with the bracket and the back mechanism;

linkage support one end with back mechanism connects, the other end of linkage support with bracket extension mechanism connects, bracket extension mechanism with the footrest subassembly is connected.

Due to the technical scheme, the utility model has the following beneficial effects:

according to the utility model, the first footrest part of the footrest extension mechanism is hinged with the fourth connecting rod through the linkage rod, so that the first footrest part and the second footrest part can be more flexibly closed and separated, and when the footrest extension mechanism is contracted, the two footrest parts are retracted and closed, and the occupied space is small; when extending, the extension length of the leg rest extension mechanism is increased, legs and feet can be better supported, the comfort of the seat is improved, and the use requirements of users with different heights are met.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIG. 1 is a schematic view of a leg rest extension mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view of a sitting position of a seat extension and retraction apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a reclining position of a seat extending and retracting device according to an embodiment of the present invention;

FIG. 4 is another schematic view of the structure of FIG. 2;

fig. 5 is another schematic view of the structure of fig. 3.

Wherein the reference numerals are: 1-a first link, 2-a second link, 21-a first connection point, 22-a second connection point, 3-a third link, 4-a fourth link, 41-a footrest connection point, 42-a trace connection point, 43-a connector connection point, 5-a first footrest part, 51-a second link connection point, 52-a linkage point, 6-a trace, 7-a second footrest part, 71-a first limit part, 8-a footrest connector, 81-a first connector, 82-a second connector, 9-a footrest assembly, 91-a first footrest, 92-a second footrest, 10-a linkage bracket, 11-a back mechanism, 12-a support structure, 121-a base, 122-a first support part, 123-a second support part, 124-base linkage assembly, 125-seat linkage, 126-back linkage, 13-linkage structure, 131-side plate, 132-first linkage, 133-second linkage, 134-third linkage, 14-transmission structure, 141-first transmission, 142-second transmission.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the utility model. In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are capable of operation in sequences other than those illustrated or described herein.

Examples

The present embodiment provides a footrest extension mechanism, as shown in fig. 1, including: the device comprises a first connecting rod 1, a second connecting rod 2, a third connecting rod 3, a fourth connecting rod 4, a first foot rest 5, a linkage rod 6, a second foot rest 7 and a foot rest connecting piece 8;

one end of a second connecting rod 2 is hinged with a first foot rest 5, the other end of the second connecting rod 2 is hinged with a first connecting rod 1, the first connecting rod 1 is used for being hinged with a linkage support 10 of the seat, one end of a fourth connecting rod 4 is hinged with a second foot rest 7, the other end of the fourth connecting rod 4 is hinged with a third connecting rod 3, the first foot rest 5 is hinged with one end of a linkage rod 6, and the other end of the linkage rod 6 is hinged with the middle part of the fourth connecting rod 4;

the footrest connecting piece 8 comprises a first connecting piece 81 and a second connecting piece 82, one end of the first connecting piece 81 is hinged with the middle part of the second footrest piece 7, the other end of the first connecting piece 81 is hinged with one end of the second connecting piece 82, the other end of the second connecting piece 82 is hinged with the middle part of the second connecting rod 2, and the middle part of the second connecting piece 82 is hinged with the middle part of the fourth connecting rod 4.

In this embodiment, first footrest spare 5 is articulated with fourth connecting rod 4 through trace 6, and the fourth connecting rod is connected with the second footrest spare, and first footrest spare 5 does not have the connected relation with the fourth connecting rod, has increased the motion flexibility of first footrest spare and second footrest spare in shrink or extension process. First footrest spare 5, trace 6, fourth connecting rod 4, second connecting piece 82 and second connecting rod 2 constitute five link mechanism, and first footrest spare can be more nimble draw close or separate with second footrest spare, has increased the distance of separating first footrest spare and second footrest spare after, has increased the extension length of second footrest spare.

Specifically, the middle of the second leg rest 7 is provided with a first limiting member 71, and when the first limiting member 71 is in fit abutment with the second connecting member 82, the second leg rest 7 is retracted to an extreme position. In this embodiment, the first limiting member 71 is used to limit the maximum retraction position of the second leg rest, so as to prevent the second leg rest from being unable to be retracted to a predetermined position and becoming loose. Meanwhile, the leg placing surface of the second leg placing piece and the leg placing surface of the first leg placing piece are kept in a vertical plane, and attractiveness of the seat in a contraction state is improved.

Specifically, one end of the second connecting rod 2 close to the first connecting rod 1 is provided with a first connecting point 21, the second connecting rod 2 is hinged with the middle part of the third connecting rod 3 at the first connecting point 21, and the third connecting rod 3 is used for being connected with the linkage bracket 10. The second link 2 is cross-connected with the third link 3.

Specifically, the end of the second link 2 near the first leg rest 5 is provided with a second connection point 22, and the second link 2 is connected to the second connection member 82 at the second connection point 22. In this embodiment, the first connecting member 81 and the second connecting member 82 are used for connecting and supporting the second leg rest 7, and the second leg rest 7, the first connecting member 81, the second connecting member 82 and the fourth connecting rod 4 form a four-bar linkage mechanism capable of being folded and extended, and are used for supporting and driving the second leg rest 7 to extend.

Specifically, one end of the fourth link 4 close to the second leg rest 7 is sequentially provided with a leg rest connection point 41, a trace connection point 42 and a connector connection point 43; the fourth link 4 is connected with the second footrest piece 7 at the footrest connection point 41, the fourth link 4 is connected with the trace 6 at the trace connection point 42, the fourth link 4 is connected with the second connector 82 at the connector connection point 43, and the trace connection point 42 is arranged between the footrest connection point 41 and the connector connection point 43.

Specifically, the first leg rest 5 is provided with a second link connection point 51 and a linkage point 52, and the distance from the linkage point 52 to the linkage rod connection point 42 is greater than the distance from the linkage point 52 to the second link connection point 51. Specifically, the distance from the linkage point 52 to the second link connection point 51 is smaller than the distance from the linkage point 52 to the linkage rod connection point 42, so that the second link 2 drives the second link connection point 51 to move downwards relative to the linkage point 52 when the first footrest piece 5 is extended, the footrest surface of the first footrest piece 5 smoothly rotates to the horizontal position where the footrest surface faces upwards, and the first footrest piece is more flexibly and rapidly unfolded.

Specifically, in the present embodiment, the connections between the first link 1, the second link 2, the third link 3, the fourth link 4, the first leg rest 5, the linkage 6, the second leg rest 7 and the leg rest connector 8 are all pivotable connections or hinged connections, and the connections between the respective parts may be through a rotating shaft, a shaft pin, a rivet, a combination of a bolt and a nut, or other fasteners that can implement pivotable connections.

Preferably, in the present embodiment, when the footrest extension mechanism is retracted to the extreme position, the first footrest member 5 is located above the second footrest member 7, and the footrest surface of the first footrest member 5 may be in the same vertical plane as the footrest surface of the second footrest member 7. When the footrest extension mechanism is extended from the retracted position to the extreme position, the footrest surfaces of the first and

second footrest pieces

5 and 7 are turned upward, and the first and

second footrest pieces

5 and 7 are spaced apart from each other.

Specifically, as shown in fig. 2, the footrest assembly 9 is further included, and the footrest assembly 9 includes a first footrest 91 and a second footrest 92, and the first footrest 91 is connected with the first leg rest 5, and the second footrest 92 is connected with the second leg rest 7. Specifically, be provided with the bracket face of inside buckling respectively on first footrest spare and the second footrest spare, the bracket face is used for rather than the bracket fixed connection, and first footrest and second footrest are fixed respectively on its foot rest face that corresponds promptly.

In the present embodiment, as shown in fig. 2 and 3, the seat linking bracket 10 drives the first link 1 and the third link 3 to rotate, so that the footrest extension mechanism moves from the retracted position shown in fig. 2 to the extended position shown in fig. 3 in which the footrest surfaces of the first footrest member 5 and the second footrest member 7 are in a horizontal position. In the process that the bracket extension mechanism extends to the extreme position from the contraction position, the second connecting rod 2 drives the first leg rest piece 5 to rotate upwards, the linkage rod 6 rotates along with the first leg rest piece 5, the first leg rest piece 5 is supported while the first leg rest piece 5 rotates more flexibly, and the fourth connecting rod 4 drives the second leg rest piece 7 and the leg rest connecting piece 8 to extend forwards and rotate upwards until the second leg rest piece 7 extends to the extreme position. During the retraction of the leg rest extension mechanism from the extended position to the extreme position, the direction of movement of the components of the leg rest extension mechanism is reversed from that during extension.

In some embodiments, the distance between the first and second leg rest members when the leg rest extension mechanism is extended to the extreme position is greater than 140mm, preferably 145mm, 147mm, 150mm or 155mm, increasing the separation distance after extension of the first and second leg rest members.

The present embodiment also provides a seat extension and retraction apparatus, as shown in fig. 2 to 5, including: a leg rest extension mechanism linking the bracket 10 and the back mechanism 11; one end of the linkage support 10 is connected with the back mechanism 11, the other end of the linkage support 10 is connected with the footrest extension mechanism, and the footrest extension mechanism is connected with the footrest component 9.

Specifically, the linking bracket 10 includes a supporting structure 12 and a linking structure 13, the supporting structure 12 includes a base 121, a first supporting member 122, a second supporting member 123 and a base linking assembly 124, wherein one end of the base 121 is connected to the first supporting member 122, the other end of the base 121 is connected to the second supporting member 123, and the base linking assembly 124 is disposed between the first supporting member 122 and the second supporting member 123. Specifically, the base linkage assembly 124 includes: a seat linkage 125 and a back linkage 126, wherein one end of the seat linkage 125 is connected to the first support 122, and the other end of the seat linkage 125 is connected to the back linkage 126.

Specifically, the linkage structure 13 includes: the middle part of the second linkage piece 133 is rotatably connected with the side plate 131, one end of the second linkage piece 133 is connected with one end of the first linkage piece 132, the other end of the first linkage piece 132 is connected with the first supporting piece 122, the other end of the second linkage piece 133 is connected with one end of the third linkage piece 134, and the other end of the third linkage piece 134 is connected with the footrest extension mechanism;

specifically, the linkage support 10 further includes a transmission structure 14, the transmission structure 14 includes a first transmission member 141 and a second transmission member 142 connected to each other, the first transmission member is used for being connected to a driving device, the second transmission member is connected to the footrest extension mechanism, and the driving device is used for driving the linkage support to move through the transmission structure. In some embodiments, the drive means may be a manual drive means; in other embodiments, the drive may be an electric drive, which may be a push rod motor or a slide motor drive.

Specifically, in the present embodiment, the back mechanism 11 is connected to the side plate 131 of the linkage structure 13, and the movement of the linkage bracket 10 drives the back mechanism 11 and the footrest extension mechanism to extend or retract.

In this embodiment, the footrest extension mechanism and the back mechanism can be continuously adjusted, and when only the footrest extension mechanism is extended, the corresponding seat is in the leisure position, when both the footrest extension mechanism and the back mechanism are extended to the extreme positions, the corresponding seat is in the lying position, and when the footrest extension mechanism and the back mechanism are retracted to the extreme positions, the corresponding seat is in the sitting position.

The utility model provides a bracket extension mechanism and seat telescoping device, through adjustment bracket extension mechanism structure, makes the flexible more nimble of bracket extension mechanism, extension length increase, support shank and foot that can be better, improves the seat travelling comfort and satisfies different height users' user demand.

The seat telescoping device of this embodiment is two sets of, and two sets of telescoping device are based on base mid-plane looks interval and symmetry setting. The seat frame is arranged on the seat telescopic device, and the seat telescopic device is soft packaged into a finished product sofa.

The foregoing description has disclosed fully preferred embodiments of the present invention. It should be noted that those skilled in the art will be able to make modifications to the embodiments of the present invention without departing from the scope of the appended claims. Accordingly, the scope of the appended claims should not be limited to the description of the embodiments contained herein.

Claims

1. A leg rest extension mechanism, comprising: the device comprises a first connecting rod (1), a second connecting rod (2), a third connecting rod (3), a fourth connecting rod (4), a first foot placing piece (5), a linkage rod (6), a second foot placing piece (7) and a foot placing connecting piece (8);

one end of the second connecting rod (2) is hinged to the first foot rest (5), the other end of the second connecting rod is hinged to the first connecting rod (1), the first connecting rod (1) is used for being hinged to a linkage support (10) of a seat, one end of the fourth connecting rod (4) is hinged to the second foot rest (7), the other end of the fourth connecting rod is hinged to the third connecting rod (3), the first foot rest (5) is hinged to one end of the linkage rod (6), and the other end of the linkage rod (6) is hinged to the middle of the fourth connecting rod (4);

bracket connecting piece (8) include first connecting piece (81) and second connecting piece (82), first connecting piece (81) one end with the middle part of second bracket piece (7) is articulated, the other end with the one end of second connecting piece (82) is articulated, the other end of second connecting piece (82) is articulated with the middle part of second connecting rod (2), the middle part of second connecting piece (82) with the middle part of fourth connecting rod (4) is articulated.

2. A leg rest extension mechanism according to claim 1, wherein the second leg rest member (7) is provided with a first stop member (71) in the middle, and when the first stop member (71) is in fit abutment with the second connecting member (82), the second leg rest member (7) is retracted to an extreme position for preventing the leg rest member from loosening.

3. A leg rest extension mechanism according to claim 1, characterized in that the end of the second link (2) near the first link (1) is provided with a first connection point (21), where the second link (2) is hinged to the middle of the third link (3), where the third link (3) is intended to be connected to the linking bracket (10).

4. A leg rest extension mechanism according to claim 1, characterized in that the second link (2) is provided with a second connection point (22) at an end close to the first leg rest (5), the second link (2) being connected to the second connector (82) at the second connection point (22).

5. A leg rest extension mechanism according to claim 1, wherein a leg rest connection point (41), a trace connection point (42) and a connector connection point (43) are provided in sequence at one end of the fourth link (4) close to the second leg rest member (7);

fourth connecting rod (4) is in bracket connecting point (41) department with second bracket spare (7) are connected, fourth connecting rod (4) are in trace connecting point (42) department with trace (6) are connected, fourth connecting rod (4) are in connecting piece connecting point (43) department with second connecting piece (82) are connected, trace connecting point (42) set up bracket connecting point (41) with between connecting piece connecting point (43).

6. A leg rest extension mechanism according to claim 5, characterised in that the first leg rest member (5) is provided with a second link connection point (51) and a linkage point (52), the linkage point (52) being at a greater distance from the linkage point (42) than the linkage point (52) is at the second link connection point (51).

7. A leg rest extension mechanism according to claim 1, characterized in that the first leg rest member (5) is located above the second leg rest member (7) when the leg rest extension mechanism is retracted to the extreme position, the leg rest face of the first leg rest member (5) and the leg rest face of the second leg rest member (7) being in the same vertical plane.

8. A leg rest extension mechanism according to claim 1, wherein the leg rest faces of the first (5) and second (7) leg rest members are turned upwards and the first (5) and second (7) leg rest members are spaced apart from each other when the leg rest extension mechanism is extended from the retracted position to the extreme position.

9. A footrest extension mechanism according to claim 1, characterized in that it further comprises a footrest assembly (9), which footrest assembly (9) comprises a first footrest (91) and a second footrest (92), which first footrest (91) is connected with the first footrest (5) and which second footrest (92) is connected with the second footrest (7).

10. A seat retractor, comprising: the leg rest extension mechanism of claim 9, the linking bracket (10) and the back mechanism (11); one end of the linkage support (10) is connected with the back mechanism (11), the other end of the linkage support (10) is connected with the footrest extension mechanism, and the footrest extension mechanism is connected with the footrest assembly (9).