CN215650139U - Sofa frame and sofa - Google Patents
Sofa frame and sofa Download PDFInfo
- Publication number
- CN215650139U CN215650139U CN202122117193.7U CN202122117193U CN215650139U CN 215650139 U CN215650139 U CN 215650139U CN 202122117193 U CN202122117193 U CN 202122117193U CN 215650139 U CN215650139 U CN 215650139U
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- leg stretching
- driving
- lifting mechanism
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- sofa frame
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- 230000007246 mechanism Effects 0.000 claims abstract description 173
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000005299 abrasion Methods 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a sofa rack, which comprises a lifting mechanism, a leg stretching mechanism, an unfolding driving mechanism and a reset elastic piece, wherein the leg stretching mechanism is hinged to the lifting mechanism; when the lifting mechanism is driven to reset by the unfolding driving mechanism, the abutting part of the lifting mechanism is separated from the leg stretching mechanism, and the leg stretching mechanism is elastically driven to be folded and reset by the resetting elastic piece. According to the sofa frame, the unfolding driving mechanism drives the abutting part of the lifting mechanism to abut against the leg stretching mechanism so as to realize the unfolding of the leg stretching mechanism, so that the abrasion between the lifting mechanism and the leg stretching mechanism is reduced, and the service life of the sofa frame is prolonged; the leg stretching mechanism is driven to be elastically folded by the reset elastic piece, so that the problem that the foot support is seriously damaged in the recovery process is solved.
Description
Technical Field
The utility model relates to the technical field of furniture, in particular to a sofa frame and a sofa.
Background
In the existing functional sofa, the extension and retraction of the foot supports and the lifting and furling of the seat surface are realized by the expansion or furling of the leg stretching mechanism and the seat surface lifting mechanism respectively, and the leg stretching mechanism is hinged on the seat surface lifting mechanism, so that when the driving mechanism drives the seat surface lifting mechanism to act, the leg stretching mechanism can be driven to rigidly expand or furl.
However, the driving method has the following defects: 1. the seat face lifting mechanism and the leg stretching mechanism are rigidly hinged, and fall off easily caused by excessive abrasion after long-time use, so that the service life of the seat face lifting mechanism and the leg stretching mechanism is shortened; 2. the foot support can not stop in time when finding the conditions of leg clamping, hand clamping and the like in the recovery process, so that the injury continues, and the foot support has great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model provides a sofa frame and a sofa.
The technical scheme adopted by the utility model for solving the problems is as follows:
the utility model provides a sofa frame, includes the lifting mechanism, articulate in the shank telescopic machanism, the expansion actuating mechanism and the elastic component that resets of lifting mechanism, wherein:
the lifting mechanism is provided with a butting part which is detachably connected with the leg stretching mechanism in a transmission way;
when the unfolding driving mechanism drives the lifting mechanism to lift, the abutting part of the lifting mechanism can abut against the leg stretching mechanism and drive the leg stretching mechanism to unfold;
when the unfolding driving mechanism drives the lifting mechanism to reset, the abutting part of the lifting mechanism is separated from the leg stretching mechanism, and the elastic force of the reset elastic piece drives the leg stretching mechanism to furl and reset.
According to the sofa frame, the unfolding driving mechanism drives the abutting part of the lifting mechanism to abut against the leg stretching mechanism so as to realize the unfolding of the leg stretching mechanism, so that the abrasion between the lifting mechanism and the leg stretching mechanism is reduced, and the service life of the sofa frame is prolonged; the leg stretching mechanism is driven to elastically fold through the reset elastic piece, even if the legs accidentally clamp hands and feet of a person, if the resistance generated by the leg stretching mechanism is greater than the elastic force of the reset elastic piece, the leg stretching mechanism stops folding, the use safety of the sofa is improved, and the problem that the leg support is seriously damaged by clamping in the recovery process is solved.
Furthermore, the lifting mechanism comprises two oppositely arranged driving connecting rod groups and two supporting plates hinged to the upper ends of the two driving connecting rod groups respectively; the two leg stretching mechanisms are hinged to the front ends of the two supporting plates respectively;
the abutting part comprises an abutting column which is arranged on the driving connecting rod group and used for abutting against the leg stretching mechanism.
Furthermore, a driving rod is arranged at one end of the driving connecting rod group facing the leg stretching mechanism, one end of the driving rod is hinged to the supporting plate, and the other end of the driving rod is provided with the butting column; the leg stretching mechanism is provided with a driven rod hinged to the supporting plate, and the abutting column swings to abut against or separate from the driven rod.
Further, the hinge point of the driving rod on the support plate and the hinge point of the driven rod on the support plate are coaxially arranged. From this, take place sliding friction and rotation friction when setting up with the axle center and can avoid butt post and driven lever butt for the butt effort is concentrated more, thereby drives shank telescopic machanism expansion motion more conveniently.
Furthermore, the driven rod is provided with a butt joint groove with an opening facing downwards, and the butt joint column is in butt joint with the butt joint groove. From this, through set up the butt groove on the driven lever, can carry out spacing fixed to the butt post to avoid the butt post to take place the skew.
Furthermore, the size of the notch of the abutting groove gradually increases outwards along the opening direction of the abutting groove.
Specifically, the abutting groove is in an inverted V shape.
Furthermore, a first cross rod is connected between the driving rods of the two driving connecting rod groups, the unfolding driving mechanism is in transmission connection with the first cross rod, and the unfolding driving mechanism drives the first cross rod to swing so as to drive the abutting column to abut against or separate from the leg stretching mechanism.
The backrest comprises two support plates, and further comprises two backrest tilting mechanisms, wherein the two backrest tilting mechanisms are respectively hinged to the rear ends of the two support plates and the two driving connecting rod groups; when the unfolding driving mechanism drives the lifting mechanism to lift or fold, the backrest tilting mechanism can be driven to tilt at the same time.
In addition, the utility model also provides a sofa, which comprises the sofa frame.
In summary, the sofa frame and the sofa provided by the utility model have the following technical effects:
according to the sofa frame, the unfolding driving mechanism drives the abutting part of the lifting mechanism to abut against the leg stretching mechanism so as to realize the unfolding of the leg stretching mechanism, so that the abrasion between the lifting mechanism and the leg stretching mechanism is reduced, and the service life of the sofa frame is prolonged; the leg stretching mechanism is driven to elastically fold through the reset elastic piece, even if the legs accidentally clamp hands and feet of a person, if the resistance generated by the leg stretching mechanism is greater than the elastic force of the reset elastic piece, the leg stretching mechanism stops folding, the use safety of the sofa is improved, and the problem that the leg support is seriously damaged by clamping in the recovery process is solved.
Drawings
FIG. 1 is a schematic view of the sofa frame of the present invention in an expanded configuration;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a partial enlarged view of portion B of FIG. 1;
FIG. 4 is a bottom view of the sofa frame of the present invention in an expanded state;
FIG. 5 is a partial enlarged view of portion C of FIG. 4;
FIG. 6 is a side view of the sofa frame of the present invention in an expanded position;
FIG. 7 is a schematic view of the deployment drive mechanism in the sofa frame of the present invention;
FIG. 8 is an exploded view of the deployment drive mechanism in the sofa frame of the present invention;
fig. 9 is a schematic structural view of the sofa frame in a folded state according to the present invention;
fig. 10 is a partially enlarged view of a portion D in fig. 9.
Wherein the reference numerals have the following meanings:
1. a lifting mechanism; 11. a drive linkage; 111. a drive rod; 112. a butting post; 113. a second convex column; 12. a support plate; 13. a first cross bar; 131. a first connecting member; 14. a second cross bar; 141. a second connecting member; 2. a leg telescoping mechanism; 21. a driven lever; 211. a butt joint groove; 22. a first convex column; 3. a deployment drive mechanism; 31. a sliding push rod; 311. a first connection portion; 32. a drive device; 321. a motor; 322. a gear housing; 3221. a left housing; 3222. a right housing; 3223. a second connecting portion; 323. a gear; 331. a screw rod; 332. a feed screw nut; 34. fixing the guide rod; 35. a switch fixing strip; 36. a travel switch; 4. a restoring elastic member; 5. a backrest tilt mechanism; 6. a foot support.
Detailed Description
For better understanding and implementation, 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.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Referring to fig. 1-8, the present invention provides a sofa frame for being fixedly mounted on a sofa base (e.g., a wooden frame, an iron frame). Specifically, the sofa frame comprises a lifting mechanism 1, a leg stretching mechanism 2 hinged to the lifting mechanism 1, an unfolding driving mechanism 3 used for driving the lifting mechanism 1 to lift or furl relative to the sofa base, and a reset elastic piece 4 used for driving the leg stretching mechanism 2 to furl. The lifting mechanism 1 is used as a supporting component for supporting the sofa seat surface and is hinged on the sofa base.
Specifically, the lifting mechanism 1 comprises two oppositely arranged driving connecting rod groups 11 and two supporting plates 12 which are respectively hinged to the upper ends of the two driving connecting rod groups 11; the two leg stretching mechanisms 2 are respectively hinged at the front ends of the two supporting plates 12; the deployment drive mechanism 3 is disposed between the two drive linkages 11, and the return spring 4 is disposed between the drive linkages 11 and the leg stretching mechanism 2.
Referring to fig. 1 to 5, the lifting mechanism 1 is further provided with an abutting portion, and the abutting portion includes an abutting column 112 disposed on the driving linkage 11 and configured to abut against the leg stretching mechanism 2. Specifically, one end of the driving linkage 11 facing the leg stretching mechanism 2 is provided with a driving rod 111, the upper end of the driving rod 111 is hinged to the supporting plate 12, and the lower end of the driving rod 111 is provided with the abutting column 112 in a penetrating manner; the leg stretching mechanism 2 has a driven lever 21 hinged to the support plate 12. Thus, when the abutment post 112 is driven to swing to abut against the leg stretching mechanism 2, the leg stretching mechanism 2 is driven to expand.
In the present embodiment, the hinge point of the driving lever 111 on the support plate 12 is coaxially disposed with the hinge point of the driven lever 21 on the support plate 12. Therefore, sliding friction and rotating friction can be avoided when the abutting column 112 abuts against the driven rod 21 by the coaxial arrangement, so that abutting acting force is more concentrated, and the leg stretching mechanism 2 is more conveniently driven to unfold.
Referring to fig. 4-5, the driven rod 21 is provided with an abutting groove 211 having a downward opening and abutting and matching with the abutting post 112, and the size of the opening of the abutting groove 211 gradually increases outward along the opening direction. Thus, by providing the abutment groove 211 in the driven lever 21, the abutment post 112 can be fixed in a limited manner, and the offset of the abutment post 112 can be avoided.
In this embodiment, the abutment groove 211 has an inverted V shape.
In addition, a first cross rod 13 is connected between the driving rods 111 of the two driving linkage groups 11, and the unfolding driving mechanism 3 is in transmission connection with the first cross rod 13; a foot support 6 is connected between the two leg stretching mechanisms 2. Therefore, when the unfolding driving mechanism 3 drives the first cross rod 13 to swing to drive the abutting column 112 to abut against the leg stretching mechanism 2, the leg stretching mechanism 2 can be driven to unfold, and the foot support 6 is driven to extend.
According to the sofa frame, the unfolding driving mechanism 3 drives the abutting part of the lifting mechanism 1 to abut against the leg stretching mechanism 2 so as to realize the unfolding of the leg stretching mechanism 2, so that the abrasion between the lifting mechanism 1 and the leg stretching mechanism 2 is reduced, and the service life of the sofa frame is prolonged.
It should be noted that the specific structures of the lifting mechanism 1 and the leg stretching mechanism 2 are well known to those skilled in the art, and the specific structures thereof will not be described herein.
In addition, the sofa frame also has an anti-pinch function. Specifically, when the lifting mechanism 1 is driven to reset by the unfolding driving mechanism 3, the abutting column 112 of the lifting mechanism 1 is disengaged from the leg stretching mechanism 2, and the leg stretching mechanism 2 is elastically folded under the elastic force of the resetting elastic piece 4. When the hands and feet of a person are accidentally clamped in the furling process, the clamping force is provided by the elastic force of the reset elastic piece 4, the clamping force is small and elastic, and the foot support 6 can be easily pulled outwards or the hands and feet can be pulled out to release the clamping, so that the use safety is improved, and the problem that the foot support 6 is seriously clamped in the furling process is solved.
In this embodiment, the elastic restoring element 4 is a spring, the driving linkage 11 is provided with a first protruding column 22, the leg stretching mechanism 2 is provided with a second protruding column 113, one end of the spring is hooked on the first protruding column 22, and the other end is hooked on the second protruding column 113. Indeed, the elastic restoring element 4 may also be a rubber band or a combination of a spring and a rubber band, as long as it provides an elastic tension.
Referring to fig. 5-6, the unfolding driving mechanism 3 includes a driving device 32, a transmission mechanism connected to an output end of the driving device 32, and a sliding push rod 31. Specifically, the driving device 32 includes a motor 321, a gear housing 322 connected to the motor 321, and a gear 323 disposed in the gear housing 322 and engaged with the output shaft of the motor 321 for transmission; the transmission mechanism comprises a screw rod 331 and a screw rod nut 332 which is arranged on the screw rod 331 in a sliding manner, and the sliding push rod 31 is sleeved on the screw rod 331 in a sliding manner and is positioned at the front end of the screw rod nut 332 in threaded connection; the gear 323 is sleeved on the screw 331.
In this embodiment, the gear housing 322 is formed by splicing a left housing 3221 and a right housing 3222.
Therefore, when the output shaft of the motor 321 rotates and drives the gear 323 to rotate, the screw 331 is driven to rotate to drive the screw nut 332 to move forward or backward, and further the sliding push rod 31 is driven to move forward or backward.
In addition, the front end of the sliding push rod 31 is provided with a first connecting part 311, and the gear housing 322 is provided with a second connecting part 3223; the first cross bar 13 is provided with a first connecting member 131 hinged to the first connecting portion 311, and the second cross bar 14 is provided with a second connecting member 141 hinged to the second connecting portion 3223.
In this embodiment, the first connecting portion 311, the second connecting portion 3223, the first connecting member 131, and the second connecting member 141 are hinge eyes.
Referring to fig. 6, the unfolding driving mechanism 3 further includes a fixed guide rod 34 sleeved on the sliding push rod 31 for guiding the sliding push rod 31, and a terminal of the fixed guide rod 34 is connected to the gear housing 322. Thus, the slide rod 31 is prevented from rotating radially by guiding the slide rod 31 by the fixed guide 34. In addition, a switch fixing bar 35 is further disposed in the fixing guide bar 34, and travel switches 36 are disposed at both front and rear ends of the switch fixing bar 35 to control the extension and retraction travel of the sliding push rod 31.
Referring to fig. 1 and 4, the sofa frame further includes two backrest tilting mechanisms 5, and the two backrest tilting mechanisms 5 are respectively hinged to the rear ends of the two support plates 12 and the two driving linkage sets 11. When the unfolding driving mechanism 3 drives the lifting mechanism 1 to lift or fold, the backrest tilting mechanism 5 can be driven to tilt at the same time.
It should be noted that the specific structure of the backrest reclining mechanism 5 is well known to those skilled in the art, and the specific structure thereof will not be described herein.
In addition, the utility model also provides a sofa, which comprises the sofa frame.
In summary, the working process of the leg stretching mechanism 2 of the sofa frame of the utility model is as follows:
expansion of the leg stretching mechanism 2: the motor 321 is electrified to rotate forwards, the lead screw 331 drives the lead screw nut 332 to move towards the direction away from the motor 321, the lead screw nut 332 pushes the sliding push rod 31 forwards and drives the first cross rod 13 to swing forwards, and then the butting column 112 on the driving rod 111 is driven to butt against the butting groove 211 on the driven rod 21 and drive the leg stretching mechanism 2 to expand; when the leg stretching mechanism 2 is unfolded to a predetermined position, the motor 321 is locked to lock the leg stretching mechanism 2, and the leg of the user can be placed on the foot rest 6 at the front end of the leg stretching mechanism 2.
(II) furling the leg stretching mechanism 2: the motor 321 is electrified to rotate reversely, the lead screw 331 drives the lead screw nut 332 to move towards the direction of the motor 321, the lead screw nut 332 drives the sliding push rod 31 to move backwards and drive the first cross rod 13 to swing backwards, the abutting column 112 on the driving rod 111 is separated from the abutting groove 211 on the driven rod 21, the leg stretching mechanism 2 is pulled by the elastic force of the reset elastic piece 4 to elastically fold, when the person accidentally clamps hands and feet, if the generated resistance is greater than the elastic tension of the reset elastic piece 4, the leg stretching mechanism 2 stops folding, the foot support 6 stops moving, so that the injury is prevented from continuing, and serious clamping injury is avoided.
In conclusion, the sofa frame and the sofa of the utility model drive the abutting part of the lifting mechanism 1 to abut against the leg stretching mechanism 2 through the unfolding driving mechanism 3 so as to realize the unfolding of the leg stretching mechanism 2, reduce the abrasion between the lifting mechanism 1 and the leg stretching mechanism 2 and prolong the service life of the sofa frame; the leg stretching mechanism 2 is driven by the reset elastic piece 4 to elastically fold, even if the legs accidentally clip the hands and feet of a person, if the resistance generated by the leg stretching mechanism 2 is greater than the elastic force of the reset elastic piece 4, the leg stretching mechanism 2 stops folding, the use safety of the sofa is improved, and the problem that the foot support 6 seriously clips in the recovery process is solved.
The technical means disclosed in the utility model scheme are not limited to the technical means disclosed in the above embodiments, but also include the technical scheme formed by any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (10)
1. The utility model provides a sofa frame, its characterized in that, include the lifting mechanism, articulate in the shank telescopic machanism of lifting mechanism, expansion actuating mechanism and the elastic component that resets, wherein:
the lifting mechanism is provided with a butting part which is detachably connected with the leg stretching mechanism in a transmission way;
when the unfolding driving mechanism drives the lifting mechanism to lift, the abutting part of the lifting mechanism can abut against the leg stretching mechanism and drive the leg stretching mechanism to unfold;
when the unfolding driving mechanism drives the lifting mechanism to reset, the abutting part of the lifting mechanism is separated from the leg stretching mechanism, and the elastic force of the reset elastic piece drives the leg stretching mechanism to furl and reset.
2. The sofa frame according to claim 1, wherein the lifting mechanism comprises two oppositely disposed driving linkage sets and two supporting plates hinged to the upper ends of the two driving linkage sets respectively; the two leg stretching mechanisms are hinged to the front ends of the two supporting plates respectively;
the abutting part comprises an abutting column which is arranged on the driving connecting rod group and used for abutting against the leg stretching mechanism.
3. The sofa frame according to claim 2, wherein the driving linkage is provided with a driving rod at one end facing the leg stretching mechanism, one end of the driving rod is hinged to the supporting plate, and the other end of the driving rod is provided with the abutting column; the leg stretching mechanism is provided with a driven rod hinged to the supporting plate, and the abutting column swings to abut against or separate from the driven rod.
4. The sofa frame according to claim 3, wherein the pivot point of the driving lever on the support plate is coaxially disposed with the pivot point of the driven lever on the support plate.
5. The sofa frame according to claim 3, wherein the driven rod is provided with an abutment slot opening downwardly, the abutment post being in abutting engagement with the abutment slot.
6. The sofa frame according to claim 5, wherein the size of the slot opening of the abutting slot becomes gradually larger outwards along the opening direction.
7. The sofa frame according to claim 6, wherein the abutting channel is in the shape of an inverted V.
8. The sofa frame according to claim 3, wherein a first cross bar is connected between the driving rods of the two driving linkage sets, the unfolding driving mechanism is in transmission connection with the first cross bar, and the unfolding driving mechanism drives the first cross bar to swing so as to drive the abutting column to abut against or separate from the leg stretching mechanism.
9. The sofa frame according to any one of claims 2-8, further comprising two backrest tilting mechanisms, wherein the two backrest tilting mechanisms are hinged to the rear ends of the two support plates and the two driving linkage sets respectively; when the unfolding driving mechanism drives the lifting mechanism to lift or fold, the backrest tilting mechanism can be driven to tilt at the same time.
10. A sofa comprising the sofa frame according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122117193.7U CN215650139U (en) | 2021-09-02 | 2021-09-02 | Sofa frame and sofa |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122117193.7U CN215650139U (en) | 2021-09-02 | 2021-09-02 | Sofa frame and sofa |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215650139U true CN215650139U (en) | 2022-01-28 |
Family
ID=79959114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122117193.7U Active CN215650139U (en) | 2021-09-02 | 2021-09-02 | Sofa frame and sofa |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215650139U (en) |
-
2021
- 2021-09-02 CN CN202122117193.7U patent/CN215650139U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20240513 Address after: 215200 west side of Tongjin Avenue, Wujiang Economic Development Zone, Suzhou City, Jiangsu Province Patentee after: Ruimai Technology Co.,Ltd. Country or region after: China Address before: 516083 5th floor, 68 Longshan 1st Road, Dayawan West District, Huizhou City, Guangdong Province (R & D office building of Minhua company) Patentee before: Huizhou Ruipelin Intelligent Technology Co.,Ltd. Country or region before: China |