CN221285159U - Stretching device of zero gravity sofa - Google Patents

Abstract

The application relates to an extension device of a zero gravity sofa, which relates to the field of sofas and comprises: the first frame is provided with a first guide part and a second guide part; the second frame is provided with a first connecting part and a second connecting part, the first connecting part is in sliding fit with the first guiding part, and the second connecting part is in sliding fit with the second guiding part; the first driving source is used for driving the second frame to move relative to the first frame, along the lateral projection direction, the extension line of the sliding track of the first connecting part relative to the first guiding part is intersected with the extension line of the sliding track of the second connecting part relative to the second guiding part, and the second frame can also overturn in the sliding process relative to the first frame by virtue of the guiding action of the first guiding part and the first connecting part and the guiding action of the second guiding part and the second connecting part, so that the feet of a user are lifted, the user can be adjusted to a zero gravity lying state from a sitting state, and the user experience is improved.

Description

Stretching device of zero gravity sofa

Technical Field

The application relates to the field of sofas, in particular to an extension device of a zero gravity sofa.

Background

The sofa is a common seat, and in order to enable people to have more comfortable rest, the existing sofa backrest can be tilted backwards generally, so that people can lie backwards for rest. The zero gravity lying posture is that the legs and the heart position of a person are basically at the same height in the lying state, the person lying in the posture feels more comfortable, the existing sofa often adopts a wooden underframe, the whole body is relatively bulky, and the use requirement of the lying in the zero gravity posture is difficult to realize.

Disclosure of utility model

The application provides an extension device of a zero gravity sofa, which aims to solve the problem that the existing sofa is difficult to realize the lying in a zero gravity posture.

The application provides an extension device of a zero gravity sofa, which adopts the following technical scheme:

An extension device for a zero gravity sofa, comprising: the first frame is provided with a first guide part and a second guide part; the second frame is provided with a first connecting part and a second connecting part, the first connecting part is in sliding fit with the first guiding part, and the second connecting part is in sliding fit with the second guiding part; a first driving source for driving the second frame to move relative to the first frame; and the extension line of the sliding track of the first connecting part relative to the first guiding part and the extension line of the sliding track of the second connecting part relative to the second guiding part are intersected along the side projection direction.

By adopting the technical scheme, along the side projection direction, the extension line of the sliding track of the first connecting part relative to the first guiding part is intersected with the extension line of the sliding track of the second connecting part relative to the second guiding part, so that the second frame can slide and overturn to lift simultaneously when sliding relative to the first frame, the feet of a user are positioned at one side of the second frame which can lift when the sofa is used, the feet of the user can lift along with the second frame, the posture of the user can be adjusted to the zero gravity posture, and the experience of the user and the use posture requirement of the sofa are improved; in addition, the first driving source is arranged to automatically drive the second frame to move relative to the first frame, so that the degree of automation is improved, and the manpower consumption is reduced.

Optionally, the stretching device further comprises a pedal mechanism and a backrest mechanism, wherein the pedal mechanism is installed on the second frame, and the backrest mechanism is connected between the first frame and the second frame.

By adopting the technical scheme, the pedal mechanism can provide support for the feet of the user, and can be lifted upwards along with the second frame in the sliding process of the second frame relative to the first frame, so that the support effect on the legs of the user is improved on the premise of realizing the lifting of the feet of the user; the back mechanism can support the back of the user, the back mechanism can be unfolded along with the second frame in the sliding process of the second frame relative to the first frame, the back of the user can be supported when the user is in a zero gravity lying state, and the user experience is improved.

Alternatively, the first drive source is mounted between the second frame and the first frame, or the first drive source is mounted between the power input end of the backrest mechanism and the first frame.

By adopting the technical scheme, the first driving source is arranged between the second frame and the first frame, and the first driving source can directly drive the second frame to move relative to the first frame, so that the stretching adjustment of the sofa is realized;

Or the first driving source is arranged between the power input end of the backrest mechanism and the first frame to drive the backrest mechanism to be unfolded, and the backrest mechanism is arranged between the first frame and the second frame, so that the second frame can be moved relative to the first frame while being unfolded, and the stretching adjustment of the sofa can be realized;

the mounting positions of the first driving sources are diversified so as to be suitable for different assembly requirements of the sofa.

Optionally, the stretching device further comprises a second drive source mounted between the second frame and the power input end of the pedal mechanism.

By adopting the technical scheme, the second driving source is arranged for independently driving the expansion and contraction of the pedal mechanism, and the expansion and contraction of the pedal mechanism can be driven according to the requirements so as to meet more use requirements;

Such as: the pedal mechanism is less in use in a sitting posture state, and can be retracted and stored through the second driving source; after the sofa is stretched, the pedal mechanism can be stretched out by the second driving source so as to enable the user to rest feet, and the user can reach a zero gravity lying state; or after the sofa is stretched, the second driving source does not drive the pedal mechanism to extend out, so that the user is in a more common lying state.

Optionally, a linkage assembly is connected between the power input end of the pedal mechanism and the first frame.

By adopting the technical scheme, as the pedal mechanism is arranged on the second frame, the linkage mechanism is connected between the power input end of the pedal mechanism and the first frame, the expansion of the pedal mechanism and the movement of the second frame relative to the first frame are linked, the linkage performance and the running action synchronism are improved, and the energy consumption for driving the pedal mechanism to expand and contract is reduced.

Optionally, the first drive source is mounted between the second frame and the power input of the foot pedal mechanism.

Through adopting above-mentioned technical scheme, be connected with the linkage subassembly between pedal mechanism's power input end and first frame, pedal mechanism's flexible and the slip of the relative first frame of second frame are synchronous, and first actuating source drive pedal mechanism stretches out and draws back can make the relative first frame of second frame remove, more enriches the equipment demand of first actuating source.

Optionally, the linkage assembly includes a first connecting rod hinged on the first frame, a second connecting rod hinged at one end of the first connecting rod far away from the first frame, and a third connecting rod hinged at one end of the second connecting rod far away from the first connecting rod, wherein one end of the third connecting rod far away from the second connecting rod is hinged with the power input end of the pedal mechanism.

Through adopting above-mentioned technical scheme, linkage assembly adopts link mechanism to realize pedal mechanism's flexible and the synchronization that the second frame moved, makes sofa overall structure simple and compact.

Optionally, a support member is fixedly arranged on the second frame, and the middle part of the second connecting rod is hinged with the support member.

Through adopting above-mentioned technical scheme, set up support piece in order to articulate the second connecting rod to reach the effect of restriction linkage subassembly degree of freedom, make linkage subassembly more stable in the operational process.

Optionally, the backrest mechanism includes a fourth link hinged to the first frame, a fifth link hinged to the first frame, and a backrest assembly hinged between the fourth link and the fifth link, the first frame, the fourth link, the backrest assembly, and the fifth link forming a four bar mechanism, and a sixth link hinged between the fifth link and the second frame.

By adopting the technical scheme, the backrest mechanism adopts the connecting rod mechanism to install the backrest component, so that the sofa has a simple and compact overall structure.

Optionally, the pedal mechanism includes a seventh link hinged to the second frame, an eighth link hinged to the second frame, and a pedal assembly hinged between the seventh link and the eighth link, the second frame, the seventh link, the eighth link, and the pedal assembly forming a four bar mechanism.

By adopting the technical scheme, the pedal mechanism also adopts the connecting rod mechanism to install the pedal assembly, so that the whole sofa structure is simple and compact.

In summary, the present application includes at least one of the following beneficial technical effects:

1. According to the application, through the guiding action of the first guiding part and the first connecting part and the guiding action of the second guiding part and the second connecting part, the second frame can also turn over in the sliding process relative to the first frame, so that the backrest mechanism is unfolded and the pedal mechanism is lifted at the same time, a user can be adjusted from a sitting posture state to a zero gravity lying posture state, and the user experience is improved;

2. In the further arrangement of the application, a linkage mechanism is arranged between the pedal mechanism and the first frame so as to improve the synchronism and linkage of the movement of the second frame relative to the first frame, the expansion and contraction of the backrest mechanism and the expansion and contraction of the pedal mechanism, enrich the assembly modes of the driving sources, reduce the arrangement of the number of the driving sources and reduce the energy consumption;

3. In the further arrangement of the application, the pedal mechanism adopts an independent driving source to drive and stretch so as to meet different use requirements and enrich the use posture of the sofa.

Drawings

FIG. 1 is a schematic view showing a contracted state of an expanding device of a zero gravity sofa according to a first embodiment;

FIG. 2 is a schematic view of the structure of FIG. 1 during deployment;

FIG. 3 is a schematic view of the fully expanded structure of FIG. 1;

Fig. 4 is a schematic structural view of a contracted state of an expanding device of a zero gravity sofa according to a second embodiment;

FIG. 5 is a schematic view of the fully expanded configuration of FIG. 4;

fig. 6 is a schematic view of a contracted state structure of an expanding device of a zero gravity sofa in a third embodiment;

Fig. 7 is a schematic view of the fully expanded structure of fig. 6.

Reference numerals illustrate: 1. a first frame; 11. a first guide part; 12. a second guide part; 2. a second frame; 21. a first connection portion; 22. a second connecting portion; 23. a cross bar; 3. a pedal mechanism; 31. a seventh link; 32. an eighth link; 33. a pedal assembly; 4. a backrest mechanism; 41. a fourth link; 42. a fifth link; 43. a sixth link; 44. a backrest assembly; 5. a linkage assembly; 51. a first link; 52. a second link; 53. a third link; 54. a support; 6. a first driving source; 7. a second driving source; 8. a synchronizing bar.

Detailed Description

The application is described in further detail below with reference to fig. 1-7.

The embodiment of the application discloses an extension device of a zero gravity sofa, and particularly discloses the following embodiments:

Example 1

As shown in fig. 1 to 3, the stretching device of the sofa comprises a first frame 1, a second frame 2, a pedal mechanism 3, a backrest mechanism 4 and a first driving source 6, wherein the second frame 2 is connected with the first frame 1 in a sliding fit manner, the pedal mechanism 3 is arranged on the second frame 2, the backrest mechanism 4 is connected between the first frame 1 and the second frame 2, the first driving source 6 is used for driving the second frame 2 to move relative to the first frame 1, the backrest mechanism 4 can be stretched in the process of driving the second frame 2 by the first driving source 6 to move relative to the first frame 1, so that a user can adjust the position of the user from a sitting position to a lying position, the second frame 2 can also turn over, the pedal mechanism 3 is lifted upwards, the foot of the user is adjusted to a zero gravity lying position, the comfort and the experience of the user are improved, manual adjustment of the user is not needed, and the labor is saved.

Specifically, the first frame 1 has a first guiding portion 11 and a second guiding portion 12, the second frame 2 has a first connecting portion 21 and a second connecting portion 22, the first connecting portion 21 is slidably matched with the first guiding portion 11, the second connecting portion 22 is slidably matched with the second guiding portion 12, and along the direction of the side projection, the extension line of the sliding track of the first connecting portion 21 relative to the first guiding portion 11 and the extension line of the sliding track of the second connecting portion 22 relative to the second guiding portion 12 intersect.

In this embodiment, the guide portion and the connecting portion are slidably matched by adopting a connection manner of a bolt and a chute, the pedal mechanism 3 is mounted on the second frame 2 at a position close to the right in the middle, and the backrest mechanism 4 is connected between the position close to the left in the middle of the second frame 2 and the left end of the first frame 1. The first frame 1 and the second frame 2 are square frames, the second frame 2 slides in the left-right direction relative to the first frame 1, and the front end and the rear end of the first frame 1 and the front end and the rear end of the second frame 2 are connected in a sliding fit manner in a bolt-chute connection mode.

The projection direction is further described as follows: in actual use, the first frame 1 is placed on the ground, and the above-mentioned lateral projection direction refers to a lateral projection in the front-rear direction of the first frame 1. Namely: the sliding track of the first connecting portion 21 along the first guiding portion 11 and the sliding track of the second connecting portion 22 along the second guiding portion 12 may be staggered in the front-rear direction.

Taking the bolt-chute connection mode at the front side as an example: the first guide part 11 and the second guide part 12 are both linear sliding grooves, and the first guide part 11 is positioned at the left side of the second guide part 12; the first connecting portion 21 and the second connecting portion 22 are both pins, and the first connecting portion 21 is located at the left side of the second connecting portion 22. The first guiding part 11 is arranged obliquely downwards to the right, the second guiding part 12 is arranged obliquely upwards to the right, the right end of the second frame 2 is tilted upwards and the left end of the second frame 2 is sunk downwards in the rightward moving process of the second frame 2 relative to the first frame 1, meanwhile, the backrest mechanism 4 is unfolded along with the movement of the second frame 2, the pedal mechanism 3 is moved upwards along with the second frame 2, the buttocks are sunken, the legs are tilted upwards and the back is tilted backwards when a user sits on the sofa, and the user is in a zero gravity lying state after the sofa stretching device is completely unfolded.

In the present embodiment, the first guide portion 11 and the second guide portion 12, which are the slide grooves, penetrate the first frame 1 in the front-rear direction, and the sliding tracks of the first connection portion 21 and the second connection portion 22 are in the same plane in the front-rear direction. In other embodiments, the first guide portion 11 and the second guide portion 12 may be staggered in the front-rear direction, for example, the first guide portion 11 is opened inside the first frame 1, and the second guide portion 12 is opened outside the first frame 1, so that the first connection portion 21 and the second connection portion 22 are staggered in the front-rear direction, and the sliding track of the first connection portion 21 and the second connection portion 22 is staggered.

In other embodiments, the inclination direction and inclination angle of the first guide portion 11 and the second guide portion 12 may be customized according to the actual situation. Specifically, in the rightward movement of the second frame 2 relative to the first frame 1, the second connecting portion 22 needs to move upward relative to the first connecting portion 21 in the vertical direction.

In other embodiments, the arrangement of the latch and the chute can be exchanged, that is: the first guide portion 11 and the second guide portion 12 are pins fixed to the first frame 1, and the first connecting portion 21 and the second connecting portion 22 are sliding grooves formed in the second frame 2.

In other embodiments, the connection mode is not limited to the connection mode of the bolt-chute, and other connection modes with guiding function such as a slide block-guide rail can be adopted.

For the pedal mechanism 3, including the seventh link 31 hinged to the second frame 2, the eighth link 32 hinged to the second frame 2, and the pedal assembly 33 hinged between the seventh link 31 and the eighth link 32, the second frame 2, the seventh link 31, the eighth link 32, and the pedal assembly 33 are a four-bar mechanism. In this embodiment, the seventh link 31 and the eighth link 32 are used as power input ends of the pedal mechanism 3, and by rotating the seventh link 31 or the eighth link 32, the pedal assembly 33 can be stretched rightward to allow a user to rest on a foot in a lying state, and when the user does not need to rest on a foot, the pedal assembly 33 can be contracted leftward below the second frame 2 to be stored, wherein a frame selection part in fig. 3 is the pedal assembly 33, and the pedal assembly 33 can be a conventional link pedal and will not be described herein.

For the backrest mechanism 4, it includes a fourth link 41 hinged to the first frame 1, a fifth link 42 hinged to the first frame 1, and a backrest assembly 44 hinged between the fourth link 41 and the fifth link 42, where the first frame 1, the fourth link 41, the backrest assembly 44, and the fifth link 42 form a four-bar mechanism, and a sixth link 43 is hinged between the fifth link 42 and the second frame 2. In the process of sliding the second frame 2 rightward relative to the first frame 1, the sixth link 43 drives the fourth link 41 and the fifth link 42 to swing, so that the backrest assembly 44 tilts and switches to the lying state, and in this embodiment, the sixth link 43 serves as a power input end of the backrest mechanism 4.

In this embodiment, a linkage assembly 5 is connected between the power input end of the pedal mechanism 3 and the first frame 1, specifically, the linkage assembly 5 includes a first link 51, a second link 52 and a third link 53, wherein one end of the first link 51 is hinged to the first frame 1, one end far away from the first frame 1 is hinged to the second link 52, one end of the second link 52 far away from the first link 51 is hinged to the third link 53, and one end of the third link 53 far away from the second link 52 is hinged to the seventh link 31 in the pedal mechanism 3. The expansion and contraction of the pedal mechanism 3 and the sliding of the second frame 2 relative to the first frame 1 are synchronously performed through the linkage assembly 5, namely: the second frame 2 slides and expands rightwards relative to the first frame 1, so that the pedal mechanism 3 synchronously stretches rightwards to be used for supporting feet of a user in the process of adjusting the stretching device from a sitting posture state to a lying posture state, the synchronism and the linkage of the structure are improved, the user does not need to independently stretch the pedal mechanism 3, and the device is convenient and quick.

In addition, a support member 54 is fixedly arranged on the second frame 2, and the middle part of the second connecting rod 52 is hinged with the support member 54, so that the degree of freedom of the linkage assembly 5 is limited, and the structural stability is improved.

In this embodiment, the pedal mechanisms 3 are provided with two groups, and the power input ends in the two groups of pedal mechanisms 3 are fixedly connected with the synchronizing rod 8, so that the supporting effect on the feet of the user is improved, the synchronism between the two groups of pedal mechanisms 3 is ensured, and in particular, the synchronizing rod 8 is fixedly connected between the eighth connecting rods 32 in the pedal mechanisms 3.

For the first drive source 6, an electric push rod capable of linear drive is employed, which is installed between the second frame 2 and the power input end of the pedal mechanism 3. Specifically, a cross rod 23 is fixedly arranged on the second frame 2 and used for hinging and installing the first driving source 6, the other end of the first driving source 6 is hinged with the synchronizing rod 8, the synchronizing rod 8 drives the two eighth connecting rods 32 to swing rightwards through driving of the first driving source 6, so that the pedal mechanism 3 is unfolded, and meanwhile, the second frame 2 is finally moved rightwards relative to the first frame 1 through the linkage assembly 5.

In addition, in the present embodiment, the linkage assembly 5 and the backrest mechanism 4 are both provided with two groups, so that structural symmetry of the stretching device is enhanced.

In other embodiments, the first driving source 6 may also adopt a driving mode capable of realizing linear movement, such as a feed screw, a linear cylinder/oil cylinder, a crank block, and the like.

The stretching device of the zero gravity sofa in the first embodiment is implemented according to the following principle: the first driving source 6 drives the synchronizing rod 8 to slide rightwards relative to the cross rod 23, the synchronizing rod 8 drives the eighth connecting rod 32 in the two groups of pedal mechanisms 3 to swing, so that the pedal assembly 33 stretches rightwards, and meanwhile, the seventh connecting rod 31 enables the second frame 2 to slide rightwards relative to the first frame 1 through the linkage assembly 5, so that the pedal mechanisms 3 tilt upwards rightwards; the second frame 2 slides and the backrest mechanism 4 is unfolded at the same time, so that the stretching device is adjusted from a sitting posture state to a lying posture state, and the tilting of the pedal mechanism 3 is matched to realize the zero-gravity lying posture state.

Example two

With reference to fig. 4 and 5, the difference from the first embodiment is that: the first driving source 6 is installed between the second frame 2 and the first frame 1. Specifically, the first driving source 6 is hinged to the first frame 1 at one end and to the cross bar 23 at the other end.

The implementation principle of the stretching device of the zero gravity sofa in the second embodiment is as follows: the first driving source 6 directly drives the second frame 2 to slide rightwards relative to the first frame 1, so that the pedal mechanism 3 is tilted rightwards and upwards, the backrest mechanism 4 is unfolded, the pedal mechanism 3 is unfolded through the linkage assembly 5 in the unfolding process, and the pedal assembly 33 is stretched out for the user to take a foot.

Example III

With reference to fig. 6 and 7, the difference from the second embodiment is that: a second driving source 7 is arranged between the second frame 2 and the power input end of the pedal mechanism 3, and a linkage mechanism between the pedal mechanism 3 and the first frame 1 is omitted, so that the pedal mechanism 3 is independently driven by the second driving source 7, and the pedal mechanism 3 can be extended according to the actual use requirement. Specifically, the second driving source 7 is also an electric push rod driven by a straight line, one end of which is hinged to the cross bar 23, and the other end of which is hinged to the synchronizing bar 8.

The implementation principle of the stretching device of the zero gravity sofa in the third embodiment is as follows: the first driving source 6 directly drives the second frame 2 to slide rightwards relative to the first frame 1, so that the pedal mechanism 3 is tilted rightwards and upwards and the backrest mechanism 4 is unfolded, and the second driving source 7 can drive and run at any time and extend the pedal mechanism 3 in the unfolding process so that the pedal assembly 33 extends rightwards; the second driving source 7 may not be driven to operate, and the contracted state of the pedal mechanism 3 may be maintained.

In other embodiments (not shown), the first driving source 6 may also be installed between the power input end of the backrest mechanism 4 and the first frame 1 to actively drive the backrest mechanism 4 to be unfolded, and finally achieve the effect of moving the second frame 2 relative to the first frame 1 through the linkage of the backrest mechanism 4 and the second frame 2.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. An extension device for a zero gravity sofa, comprising: a first frame (1), wherein a first guide part (11) and a second guide part (12) are arranged on the first frame (1); a second frame (2), wherein a first connecting part (21) and a second connecting part (22) are arranged on the second frame (2), the first connecting part (21) is in sliding fit with the first guiding part (11), and the second connecting part (22) is in sliding fit with the second guiding part (12); a first drive source (6) for driving the second frame (2) to move relative to the first frame (1); wherein, along the side projection direction, the extension line of the sliding track of the first connecting part (21) relative to the first guiding part (11) is intersected with the extension line of the sliding track of the second connecting part (22) relative to the second guiding part (12).

2. The stretching apparatus of a zero gravity sofa according to claim 1, further comprising a foot rest mechanism (3) and a backrest mechanism (4), said foot rest mechanism (3) being mounted on said second frame (2), said backrest mechanism (4) being connected between said first frame (1) and said second frame (2).

3. The stretching apparatus of a zero gravity sofa according to claim 2, characterized in that the first driving source (6) is mounted between the second frame (2) and the first frame (1) or the first driving source (6) is mounted between the power input end of the backrest mechanism (4) and the first frame (1).

4. A stretching apparatus for a zero gravity sofa according to claim 3, further comprising a second driving source (7), said second driving source (7) being mounted between said second frame (2) and the power input of said footrest mechanism (3).

5. A stretching apparatus of a zero gravity sofa according to claim 2 or 3, characterized in that a linkage assembly (5) is connected between the power input end of the pedal mechanism (3) and the first frame (1).

6. The stretching apparatus of a zero gravity sofa according to claim 5, characterized in that said first driving source (6) is mounted between said second frame (2) and the power input of said pedal mechanism (3).

7. The stretching device of a zero gravity sofa according to claim 5, wherein the linkage assembly (5) comprises a first connecting rod (51) hinged on the first frame (1), a second connecting rod (52) hinged on one end of the first connecting rod (51) far away from the first frame (1), and a third connecting rod (53) hinged on one end of the second connecting rod (52) far away from the first connecting rod (51), and one end of the third connecting rod (53) far away from the second connecting rod (52) is hinged with the power input end of the pedal mechanism (3).

8. The stretching apparatus of the zero gravity sofa according to claim 7, wherein a supporting member (54) is fixedly arranged on the second frame (2), and the middle part of the second connecting rod (52) is hinged with the supporting member (54).

9. The stretcher of a zero gravity sofa according to claim 2, characterized in that the backrest mechanism (4) comprises a fourth link (41) hinged on the first frame (1), a fifth link (42) hinged on the first frame (1) and a backrest assembly (44) hinged between the fourth link (41) and the fifth link (42), the first frame (1), the fourth link (41), the backrest assembly (44) and the fifth link (42) being a four bar mechanism, a sixth link (43) being hinged between the fifth link (42) and the second frame (2).

10. The stretching apparatus of a zero gravity sofa according to claim 2, wherein said pedal mechanism (3) comprises a seventh link (31) hinged on said second frame (2), an eighth link (32) hinged on said second frame (2) and a pedal assembly (33) hinged between said seventh link (31) and said eighth link (32), said second frame (2), said seventh link (31), said eighth link (32) and said pedal assembly (33) being a four bar mechanism.