CN213308543U

CN213308543U - Front supporting structure of sofa stretching iron frame and sofa stretching iron frame

Info

Publication number: CN213308543U
Application number: CN202021212549.4U
Authority: CN
Inventors: 李云海; 沈勤英; 王志禹; 毕大岩
Original assignee: Kuka Home Co Ltd
Current assignee: Kuka Home Co Ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-06-01
Anticipated expiration: 2030-06-28

Abstract

The utility model relates to a front supporting structure of a sofa stretching iron frame; the sofa comprises a sofa stretching iron frame and a supporting component arranged at the front end of the bottom of the sofa stretching iron frame; the supporting component comprises a limiting rod, a push rod and a connecting rod; when the sofa stretching iron frame is stretched, the push rod transmits the thrust of the sofa stretching iron frame, so that the connecting rod moves to the front of the sofa stretching iron frame along with the contact piece in a forward and forward downward track and finally contacts the ground, and in the process, the limiting rod limits the motion tracks of the connecting rod and the contact piece by prying the push rod; make a forward action of advancing through supporting component at the extension initial stage, can clear away the foreign matter in supporting component the place ahead through the conflict piece to avoid the problem that the foreign matter causes the hindrance to the final foothold of supporting component.

Description

Front supporting structure of sofa stretching iron frame and sofa stretching iron frame

Technical Field

The utility model relates to the field of sofas or seats, in particular to a functional sofa or seat which can be changed among sitting postures, sitting and lying postures or lying postures, in particular to a front support structure of a sofa stretching iron frame.

Background

The functional sofa is a movable multifunctional sofa which can realize the conversion among sitting posture, sitting and lying posture through an iron frame which can move inside the functional sofa. In the process of changing the posture of the sofa, particularly after the sofa is switched to the sitting or lying posture, the center of gravity of the sofa is easy to be unstable by matching with the specific action of the user, and the whole sofa is overturned forwards.

The utility model publication CN209644426U proposes a supporting structure that rotates outwards and touches the ground following the movement of the sofa stretching iron frame. But this utility model patent also has obvious defect, when bearing structure's the foot point place ground has the foreign matter, but bearing structure in this utility model patent can not provide extra holding power for sofa extension iron stand, and the focus that can make sofa extension iron stand more easily produces slope or unstability phenomenon to the contrary.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects and provide a front supporting structure which can clear the front obstacles and can be used as a foldable sofa extension iron frame.

In order to achieve the above object, the present invention is realized as follows:

a front supporting structure of a sofa stretching iron stand comprises the sofa stretching iron stand and a supporting component arranged at the front end of the bottom of the sofa stretching iron stand; the supporting component comprises a supporting rod and a butting piece, and the supporting rod comprises a limiting rod, a push rod and a connecting rod; one ends of the limiting rod and the push rod are respectively and rotatably connected with the sofa stretching iron frame, one end of the connecting rod is rotatably connected with the abutting piece, the other ends of the connecting rod and the limiting rod are respectively and sequentially and rotatably connected with the other end and the middle part of the push rod, and the push rod is horizontally arranged when the sofa stretching iron frame is in a contraction state; therefore, when the sofa stretching iron frame stretches, the push rod transmits the thrust of the sofa stretching iron frame, so that the connecting rod moves to the front of the sofa stretching iron frame along with the contact piece in a forward and forward downward track and finally contacts the bottom ground, and in the process, the limiting rod limits the motion tracks of the connecting rod and the contact piece by prying the push rod.

In the front supporting structure of the sofa stretching iron frame, the supporting rod and the abutting piece are mutually and rotatably connected through the first rotating point, and meanwhile, the abutting piece and the supporting rod are also rotatably connected with the sofa stretching iron frame through the second rotating point and the third rotating point in sequence; therefore, when the sofa stretching iron frame is stretched, the abutting piece moves forwards along with the stretching of the sofa stretching iron frame, and meanwhile, the supporting rod limits the moving track of the abutting piece, so that the abutting piece is enabled to move forwards in a forward and forward downward track and finally touches the bottom ground.

The height of the first rotating point and the second rotating point of the front supporting structure of the sofa stretching iron frame is positioned at the upper half part of the whole height of the sofa stretching iron frame.

The front supporting structure of the sofa extension iron frame has the advantage that the forward moving distance of the contact piece is 100-150 mm.

The sofa extends the preceding bearing structure of iron stand, the bottom of piece of supporting sets up the rubber gyro wheel, the piece of supporting is through the rubber gyro wheel and contradict ground.

A sofa stretching iron frame comprises the front supporting structure and the sofa stretching iron frame, wherein the sofa stretching iron frame comprises a backrest component, a linkage component and a base, the linkage component is arranged on the base, and the backrest component is rotatably connected with the linkage component; the supporting component is respectively and rotatably connected with the linkage component and the base; therefore, when the linkage assembly is stressed and extended, the whole linkage assembly moves forwards around the base and drives the backrest assembly to tilt backwards; in the process, the support component is unfolded forwards and downwards along with the extension of the sofa extension iron frame and finally contacts the ground to form a support structure.

The sofa extension iron stand, still include the shank subassembly, the shank subassembly pass through gangbar and fourth turning point and with the linkage subassembly is connected, works as the sofa extension iron stand is under the extension state, the supporting component touches with ground and supports and is located the below of shank subassembly.

One end of a supporting rod of the supporting component is rotatably connected with the base, the other end of the supporting rod of the supporting component is rotatably connected with the abutting piece through a first rotating point, and the abutting piece of the supporting component is rotatably connected with a linkage component of the sofa stretching iron frame through a second rotating point; and the heights of the first rotating point and the second rotating point are always above the fourth rotating point.

The utility model provides a sofa extends iron stand, its linkage subassembly that is used for the mount pad frame can make the antedisplacement action and drive the synchronous hypsokinesis of back subassembly to the use travelling comfort that sofa extends iron stand has been promoted. Meanwhile, the sofa stretching iron frame is also provided with an additional bottom supporting structure; the support structure is synchronously deployed with the extension of the sofa extension iron and synchronously retracted with the retraction of the sofa extension iron. When the supporting structure is unfolded, the supporting structure moves forwards for a certain distance, then extends downwards at the same time and finally contacts and abuts against the ground; therefore, the supporting structure can remove foreign matters in front of the supporting structure when pushed forwards in the early stage of extension, so that the problem that the supporting structure per se fails due to the foreign matters is avoided.

Drawings

Fig. 1 is a schematic view of the contracted state of the present embodiment.

Fig. 2 is a schematic diagram of the extended state of the present embodiment.

Fig. 3 is a schematic diagram of the stretching process of the embodiment.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in fig. 1 and 2, a sofa extension iron stand 1 comprises a backrest assembly 11, a linkage assembly 12 and a base 13, wherein the linkage assembly 12 is rotatably arranged on the base 13, and the backrest assembly 11 is rotatably connected with the linkage assembly 12; the linkage assembly 12 is a linkage center of the sofa stretching iron frame 1, and when the linkage assembly 12 stretches, the backrest assembly 11 synchronously tilts backwards; when the linkage assembly 12 is retracted, the backrest assembly 11 is retracted synchronously.

The sofa extension iron stand 1 further comprises an additional leg component 14, wherein the leg component 14 is rotatably connected with the linkage component 12 through the linkage rod 9, and when the linkage component 12 extends, the leg component 14 extends forwards synchronously.

In the above-described configuration, the linkage assembly 12 is typically used in conjunction with the seat frame to form a complete functional sofa iron frame; wherein, because the linkage assembly 12 comprises the linkage rods 9 arranged transversely and the first driven rods 121 and the second driven rods 122 arranged longitudinally, the linkage assembly 12 has a quadrilateral structure, and when in action, the seat frame connected with the linkage assembly can translate forwards. Thus, the sofa stretching iron frame using the structure has the functions of forward moving the seat frame and driving the backrest to tilt backwards.

In the above structure, when the linkage assembly 12 is extended to the right position, the leg assembly 14 and the backrest assembly 11 are both extended to the maximum position, and at this time, the length of the sofa extension iron frame 1 is greatly increased, which causes the hidden trouble of instability of the original base 13.

To overcome this risk, a support structure 2 is provided in front of the base 13, said support structure 2 being connected to the linkage assembly 12 so as to be synchronously deployed as the linkage assembly 12 is extended.

The support structure 2 comprises a support bar 21 and a counter part 22, and in order to make the support structure 2 durable, the support bar 21 is designed to be assembled: the support rod 21 comprises a limiting rod 211, a push rod 212 and a connecting rod 213; one end of the limiting rod 211 and one end of the push rod 212 are respectively connected with the sofa stretching iron frame 1 in a rotating manner, one end of the connecting rod 213 is connected with the abutting piece 22 in a rotating manner, the other ends of the connecting rod 213 and the limiting rod 211 are respectively connected with the other end and the middle of the push rod 212 in a rotating manner in sequence, and the push rod 212 is horizontally arranged when the sofa stretching iron frame 1 is in a contracting state. As shown in fig. 3, when the sofa stretching iron stand 1 is stretched, the push rod 212 transmits the pushing force of the sofa stretching iron stand 1, so that the link 213 moves to the front of the sofa stretching iron stand 1 along the contact piece 22 in a forward and downward trajectory and finally touches the ground, and in the process, the limiting rod 211 limits the movement trajectory of the link 213 and the contact piece 22 by prying the push rod 212.

In this embodiment, in order to make the supporting structure 2 extend forward as much as possible, the supporting rod 21 and the abutting member 22 are rotatably connected to each other through the first rotating point 3, and the abutting member 22 and the supporting rod 21 are rotatably connected to the sofa stretching iron frame 1 through the second rotating point 4 and the third rotating point 5 in sequence; thus, when the sofa stretching iron frame 1 is stretched, the abutting piece 22 moves forward along with the stretching of the sofa stretching iron frame 1, and at the same time, the supporting rod 21 limits the moving track of the abutting piece 22, so that the abutting piece is driven to move forward along a forward and forward downward track and finally contact the bottom ground. Meanwhile, the heights of the first rotating point 3 and the second rotating point 4 are also positioned above the fourth rotating point 10 between the linkage rod 9 and the first driven rod 121. In this way, the forward movement distance between the retracted state and the extended state of the support rod 21 and the interference member 22 is not less than 100 mm.

Furthermore, the size of the contact member 22 is changed in the supporting structure 2 to be lengthened and bent, and then the supporting rod 21 is engaged to increase the forward moving distance of the contact member 22 to 100 mm-150 mm.

In the embodiment, since the contact member 22 contacts with the ground and receives pressure, in order to avoid damage to the contact member 22 or the ground due to pressure, the rubber roller 221 is disposed at the bottom of the contact member 22, and the contact member 22 contacts with the ground through the rubber roller 221.

Through the sofa extension iron stand that this embodiment demonstrates, can see that the utility model provides a sofa extension iron stand has following advantage:

1. the seat frame of the sofa stretching iron frame can move forwards through the linkage assembly, and the sofa stretching iron frame formed by matching the leg assembly and the backrest assembly has a posture of being approximately flat and can be provided, so that the functionality of the sofa stretching iron frame is expanded.

2. The sofa stretching iron frame is characterized in that an additional supporting structure is arranged at the front part of the base, the supporting structure moves forwards from a folding state and gradually expands when being changed from the folding state to the stretching state along with the sofa stretching iron frame, and after moving forwards for a certain distance, the supporting structure extends downwards along with the further expansion of the sofa stretching iron frame, and finally, when the sofa stretching iron frame completes the stretching action, the supporting structure is completely expanded and contacts the ground, so that additional supporting force is provided for the sofa stretching iron frame.

3. Bearing structure self have the safety protection function, at the initial stage that bearing structure expandes, conflict piece makes a action of advancing to clear away the foreign matter in bearing structure the place ahead, avoid the foreign matter to cause the hidden danger of hindrance to the final foothold of bearing structure.

Claims

1. A front supporting structure of a sofa stretching iron stand comprises the sofa stretching iron stand (1) and a supporting component (2) arranged at the front end of the bottom of the sofa stretching iron stand (1); the method is characterized in that: the supporting component (2) comprises a supporting rod (21) and a butting piece (22), wherein the supporting rod (21) comprises a limiting rod (211), a push rod (212) and a connecting rod (213); one end of the limiting rod (211) and one end of the push rod (212) are respectively rotatably connected with the sofa stretching iron frame (1), one end of the connecting rod (213) is rotatably connected with the contact piece (22), the other ends of the connecting rod (213) and the limiting rod (211) are respectively and sequentially rotatably connected with the other end and the middle part of the push rod (212), and the push rod (212) is horizontally arranged when the sofa stretching iron frame (1) is in a contraction state; therefore, when the sofa stretching iron frame (1) is stretched, the push rod (212) transmits the thrust of the sofa stretching iron frame (1), so that the connecting rod (213) moves to the front of the sofa stretching iron frame (1) along the forward and downward tracks along with the contact piece (22) and finally contacts the ground, and in the process, the limiting rod (211) limits the movement tracks of the connecting rod (213) and the contact piece (22) by prying the push rod (212).

2. The front support structure of a sofa expansion iron stand according to claim 1, wherein: the supporting rod (21) and the contact piece (22) are mutually connected in a rotating mode through the first rotating point (3), and meanwhile, the contact piece (22) and the supporting rod (21) are further connected with the sofa stretching iron frame (1) in a rotating mode through the second rotating point (4) and the third rotating point (5) in a rotating mode; thus, when the sofa stretching iron frame (1) is stretched, the contact piece (22) moves forwards along with the stretching of the sofa stretching iron frame (1), and meanwhile, the support rod (21) limits the moving track of the contact piece (22), so that the contact piece is enabled to move forwards in a forward and forward downward track and finally contacts the bottom ground.

3. The front support structure of a sofa expansion iron stand according to claim 2, wherein: the heights of the first rotating point (3) and the second rotating point (4) are positioned at the upper half part of the whole height of the sofa stretching iron frame (1).

4. The front support structure of a sofa expansion iron stand according to claim 2, wherein: the forward moving distance of the contact member (22) is 100mm to 150 mm.

5. The front support structure of a sofa stretching iron stand according to claim 1 or 2, characterized in that: the bottom of the contact piece (22) is provided with a rubber roller (221), and the contact piece (22) is abutted against the ground through the rubber roller (221).

6. A sofa stretching iron frame is characterized in that: the front support structure comprises the front support structure and the sofa stretching iron stand as claimed in any one of claims 1 to 5, wherein the sofa stretching iron stand (1) comprises a backrest component (11), a linkage component (12) and a base (13), the linkage component (12) is arranged on the base (13), and the backrest component (11) is rotatably connected with the linkage component (12); the supporting component (2) is respectively connected with the linkage component (12) and the base (13) in a rotating way; therefore, when the linkage assembly (12) is stressed and extended, the whole body of the linkage assembly moves forwards around the base (13) and drives the backrest assembly (11) to tilt backwards; in the process, the supporting component (2) is unfolded forwards and downwards along with the extension of the sofa extension iron frame (1) and finally contacts the ground to form a supporting structure.

7. The sofa stretching iron frame according to claim 6, wherein: the sofa stretching iron frame is characterized by further comprising a leg component (14), wherein the leg component (14) is connected with the linkage component (12) through a linkage rod (9) and a fourth rotating point (10), and when the sofa stretching iron frame (1) is in a stretching state, the supporting component (2) is in contact with the ground and is located below the leg component (14).

8. The sofa stretching iron according to claim 7, wherein: one end of a supporting rod (21) of the supporting component (2) is rotatably connected with the base (13), the other end of the supporting rod is rotatably connected with the contact piece (22) through a first rotating point (3), and the contact piece (22) of the supporting component (2) is rotatably connected with the linkage component (12) of the sofa stretching iron frame (1) through a second rotating point (4); the heights of the first rotating point (3) and the second rotating point (4) are always above the fourth rotating point (10).