CN217644875U - Hinge four-bar mechanism, posture adjusting device and double-posture functional sofa - Google Patents

Abstract

The invention discloses a hinged four-bar mechanism, a posture adjusting device and a double-posture functional sofa, wherein the hinged four-bar mechanism comprises a mounting piece, a supporting piece, a transmission piece and a connecting piece, the supporting piece, the transmission piece and the connecting piece are stacked along a first direction, one end of the transmission piece is rotatably connected to the supporting piece, the other end of the transmission piece is rotatably connected to a first end of the mounting piece, one end of the connecting piece is rotatably connected to the supporting piece, the other end of the connecting piece is rotatably connected to a second end of the mounting piece, a limiting nail is arranged on one surface of the transmission piece, which is close to the connecting piece, a first limiting groove and a second limiting groove which are matched with the limiting nail are arranged on one side of the connecting piece, which is close to the limiting nail, and the first limiting groove is close to the mounting piece relative to the second limiting groove. The utility model discloses a change that spacing nail switched to realize two kinds of gestures in first spacing groove and second spacing groove has been solved in this application and has relied on the problem that part appearance location leads to the sofa leather sheath that easily wears out, has avoided the wearing and tearing to the sofa when being convenient for install.

Description

Hinge four-bar mechanism, posture adjusting device and double-posture functional sofa

Technical Field

The invention relates to the technical field of functional sofa mechanical stretching devices, in particular to a hinged four-bar mechanism, a posture adjusting device and a double-posture functional sofa.

Background

Modern home sofas are indispensable components, have evolved into various shapes and have more functions based on market demands, wherein adjustable sofa backrests are particularly widely used, and usually, hinges are mounted on the sofa backrests to realize the adjusting function. The existing sofa backrest turnover hinge four-bar mechanism is usually positioned by depending on the shapes of parts, has large impact sound, is easy to wear, is limited in installation position and is easy to wear a sofa leather sheath.

A hinge with a moving part is disclosed in Chinese patent literature, and is disclosed in the publication No. CN203506108U, and structurally comprises a hinge main part and a hinge auxiliary part, wherein the hinge main part and the hinge auxiliary part are mutually hinged, the hinge auxiliary part is provided with a sliding groove, a moving part connected with a sofa part is arranged in the sliding groove, and the moving part is connected with the hinge main part through a connecting rod. The utility model discloses a guaranteed that sofa or sofa accessory surface leather can thoroughly open, be difficult for producing the fold, prolonged the life of sofa and made its appearance more add pleasing to the eye, nevertheless require higher to the precision of spare part, wearing and tearing easily simultaneously, and the angle that turns over a has certain limitation.

Disclosure of Invention

The utility model aims at solving the problem that the existing backrest folding hinge four-bar mechanism relies on part appearance positioning to lead to the sofa leather sheath easy to wear, and providing a functional sofa with hinge four-bar mechanism, posture adjusting device and double postures.

In order to solve the above problem, the utility model adopts the following technical scheme:

the utility model provides a hinge four-bar linkage, includes installed part, support piece, driving medium and connecting piece, support piece the driving medium with the connecting piece is followed the range upon range of setting of first direction, the installed part the driving medium with the connecting piece is followed the range upon range of setting of first direction, driving medium one end is rotated and is connected on the support piece, the driving medium other end rotate connect in the first end of installed part, connecting piece one end is rotated and is connected on the support piece, the connecting piece other end rotate connect in the second end of installed part, the one side that the driving medium is close to the connecting piece is provided with the banking pin, one side that the connecting piece is close to the banking pin is provided with the first spacing groove of banking pin complex and second spacing groove, wherein, first spacing groove for the second spacing groove is close to the installed part.

The installed part is fixed on the sofa back as the driving link, support piece fixes and is regarded as the frame on the splint of sofa seat frame, the driving medium carries out the motion transmission, through the stop pin first spacing groove with the conversion of two positions is realized to the second spacing groove, support piece the driving medium with the connecting piece is along the range upon range of setting of first direction, the installed part the driving medium with the connecting piece is followed the range upon range of setting of first direction has guaranteed to have the gap between driving medium, connecting piece and the sofa leather sheath, has avoided the wearing and tearing of hinge to the sofa leather sheath.

In some of these embodiments, the support is disposed along a second direction that is orthogonal to the first direction; with the spacing pin in the first spacing groove, the direction of extension of the mounting member is substantially parallel to the second direction, and the second end of the mounting member is adjacent to the support member relative to the first end; under the condition that the limiting nail is positioned in the second limiting groove, the extending direction of the mounting piece is a third direction, wherein the third direction is perpendicular to the first direction and the second direction respectively.

In some embodiments, the connecting member includes a mounting member segment, a middle segment and a supporting member segment, the mounting member segment, the middle segment and the supporting member segment are fixedly connected in an arch shape bending towards the transmission member, the first limiting groove is arranged at the outer side of one end of the mounting member segment close to the middle segment, and the second limiting groove is arranged at the outer side of one end of the supporting member segment close to the middle segment; the structure enables the connecting piece to be close to the transmission piece, and the stability of the whole mechanism is ensured when the limiting nail is positioned in the first limiting groove and the second limiting groove.

In some embodiments, the mounting member includes a mounting portion and a connecting portion, one end of the connecting portion near the connecting member is provided with a first raised portion, and the connecting member is rotatably connected with the first raised portion; one end of the connecting piece, which is close to the supporting piece, is provided with a second heightening part, and the supporting piece is rotationally connected with the second heightening part; the first portion of increasing and the second portion of increasing make to have certain distance between connecting piece and the sofa leather sheath, have effectively avoided the hinge to the wearing and tearing of sofa leather sheath.

In some of these embodiments, the support is disposed in a second direction; the both ends of driving medium rotate to with under the condition in the second direction vertical plane, the extending direction of installed part with the second direction is roughly parallel, just the installed part the second end for first end is kept away from support piece has effectively avoided having the dead point of motion, leads to the dead problem of mechanism card.

In some embodiments, the side wall of the limit pin is sleeved with a bushing, and the structure reduces impact noise and avoids hinge abrasion.

An attitude adjustment apparatus comprising one or more articulated four-bar mechanisms as described in any one of the above embodiments.

In some of the embodiments, in a case where the posture adjustment device includes a plurality of four-bar linkages, at least two of the plurality of four-bar linkages are mirror-symmetrical to each other; a plurality of hinge four-bar mechanisms are used simultaneously, so that the problem of hinge deformation caused by uneven stress is avoided.

The double-posture functional sofa comprises a backrest and a seat frame, and the double-posture functional sofa further comprises the posture adjusting device in the embodiment, wherein a supporting piece of each hinge four-bar mechanism in the posture adjusting device is connected to the seat frame, and a mounting piece of each hinge four-bar mechanism is connected to the backrest.

To sum up, the utility model discloses following beneficial effect: (1) The movement dead points are avoided, and the use experience of a user is improved; (2) The use of the bushing for limiting has the advantages of low noise and good stability, avoids the abrasion to the sofa leather sheath and beautifies the appearance of the product.

Drawings

Fig. 1 is a schematic structural diagram of a four-bar hinge structure provided by the present invention.

Fig. 2 is a schematic view of a first posture structure of a posture adjustment device provided by the present invention.

Fig. 3 is a schematic diagram of a second posture structure of the posture adjustment device provided by the present invention.

Fig. 4 is a schematic diagram of the mechanism of the four-bar hinge structure according to the present invention, when the driving member 3 is located in the horizontal direction.

Description of reference numerals:

1. a mounting member; 11. an installation part; 12. a connecting portion; 121. a first elevated portion; 2. a support member; 3. a transmission member; 31. a limit pin; 32. a bushing; 4. a connecting member; 41. a mounting member segment; 411. a first limit groove; 42. a middle section; 43. a support member segment; 431. a second limit groove; 432. a second elevated portion.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1, a hinge four-bar linkage, including installed part 1, support piece 2, driving medium 3 and connecting piece 4, installed part 1 comprises installation department 11 and connecting portion 12 and becomes the L type, connecting portion 12 one end is provided with first increase portion 121, first increase portion 121 makes and has the certain distance between installed part 1 and the connecting piece 4, the wearing and tearing of connecting piece 4 to the sofa leather sheath have been avoided, first increase portion 121 also can set up the one end that is close to installed part 1 at connecting piece 4, can make and have the certain distance between installed part 1 and the connecting piece 4 equally, and then avoid the wearing and tearing of connecting piece 4 to the sofa leather sheath. The mounting portion 11 is used to fix the mounting member 1 to the sofa backrest. Support piece 2, driving medium 3 and connecting piece 4 are along the range upon range of setting of first direction, and installed part 1, driving medium 3 and connecting piece 4 are followed the range upon range of setting of first direction has guaranteed to have the gap between driving medium, connecting piece and the sofa leather sheath, has avoided the hinge to the wearing and tearing of sofa leather sheath.

The supporting piece 2 is a vertical long plate and is used for being fixed on a clamping plate of a sofa seat frame; the support member 2 is disposed along a second direction, which is perpendicular to the first direction. Transmission member 3 is the arc long slab, and 3 one ends of transmission member rotate to be connected on support piece, and the 3 other ends of transmission member rotate to be connected in the first end of installed part 1, and the one side that support piece 2 was kept away from in the middle part of transmission member 3 is provided with stop pin 31, and the lateral wall cover of stop pin 31 is equipped with bush 32, and bush 32 can less impulsive noise, has avoided the wearing and tearing between the hinge simultaneously.

Connecting piece 4 one end is rotated and is connected on support piece, and the connecting piece 4 other end is rotated and is connected the second end at installed part 1, connecting piece 4 by installed part section 41, middle section 42 and support piece section 43 constitute to the crooked bow-shaped of driving medium, the outside that installed part section 41 is close to middle section 42 one end is provided with first spacing groove 411, the outside that support piece section 43 is close to middle section 42 one end is provided with second spacing groove 431, above-mentioned structure makes connecting piece 4 can be close to driving medium 3, whole mechanism's stability when having guaranteed that stop pin 31 is arranged in first spacing groove 411 and second spacing groove 431. The one end that support piece section 43 kept away from second spacing groove 431 is provided with second increase portion 432, and second increase portion 432 makes and has certain distance between support piece 2 and the connecting piece 4, has avoided the wearing and tearing of connecting piece 4 to the sofa leather sheath, and second increase portion 431 also can set up the one end that is close to connecting piece 4 at support piece 2, can make and have certain distance between support piece 2 and the connecting piece 4 equally, and then avoids the wearing and tearing to the sofa leather sheath.

As shown in fig. 2, the posture adjusting device comprises two hinged four-bar mechanisms shown in fig. 1, the two hinged four-bar mechanisms are in mirror symmetry with each other, and the two hinged four-bar mechanisms are used simultaneously, so that the problem of deformation of the hinged four-bar mechanisms due to uneven stress is solved. With the stop pin 31 in the first stop slot 411, the extending direction of the mounting member 1 is substantially parallel to the second direction, and the second end of the mounting member 1 is close to the support member 2 relative to the first end, and at this time, the mounting member 1 is in a normal posture, and the mounting member 1 is slightly inclined backward.

As shown in fig. 3, the posture adjusting device comprises two hinged four-bar mechanisms shown in fig. 1, the two hinged four-bar mechanisms are mirror-symmetrical to each other, and the two hinged four-bar mechanisms are used simultaneously, so that the problem of deformation of the hinged four-bar mechanisms caused by uneven stress is solved. Under the condition that the limit nail 31 is located in the second limit groove 431, the extending direction of the mounting piece 1 is a third direction, wherein the third direction is respectively perpendicular to the first direction and the second direction, at this time, the mounting piece 1 is in a turning-over posture, and the mounting piece 1 is in a horizontal direction.

As shown in fig. 4, under the circumstances of the both ends of driving medium 3 rotated to in with the perpendicular plane of second direction, the extending direction of installed part 1 was roughly parallel with the second direction, just the second end of installed part is kept away from for first end support piece 2, and the sofa backrest has self gravity to play the auxiliary action this moment, has avoided having the dead point of motion, leads to the dead problem of mechanism card, has improved user's use and has experienced.

The utility model provides a two attitude's function sofa, including back and seat frame, still include the attitude adjustment device that fig. 2 shows, wherein, the installed part 1 of hinge four-bar linkage in the attitude adjustment device is fixed and is regarded as the driving link on the sofa back, the support piece 2 of hinge four-bar linkage is fixed and is regarded as the frame on the splint of sofa seat frame, transmission member 3 of hinge four-bar linkage carries out the motion transmission, only need the position of manual adjustment sofa back, make spacing nail 31 switch back and forth in first spacing groove 411 and second spacing groove 431, can make the sofa back be in normal gesture or tea table gesture, realize the 90 functions of turning over a book of sofa back.

The utility model provides an all can freely install and dismantle between essential element installed part 1, support piece 2, driving medium 3 and the connecting piece 4, change when a certain part of being convenient for damages, in addition, installed part 1 can be on the sofa back convenient installation and dismantlement, and support piece 2 can be conveniently installed and dismantle on the splint of sofa seat frame.

The present invention is obviously not limited to the details of the above-described embodiments, but includes the essential features of the present invention, and the present invention can be implemented by a variety of specific embodiments. Accordingly, the present embodiments are to be considered as illustrative and not restrictive. Any changes or modifications made by those skilled in the art to the technical solution of the present invention without departing from the scope of the claims of the present invention are all covered within the scope of the present invention.

Claims (9)

1. The utility model provides a hinge four-bar linkage, includes installed part (1), support piece (2), driving medium (3) and connecting piece (4), its characterized in that: support piece (2) driving medium (3) with connecting piece (4) are along the range upon range of setting of first direction, installed part (1) driving medium (3) with connecting piece (4) are followed the range upon range of setting of first direction, driving medium (3) one end is rotated and is connected on support piece (2), and driving medium (3) other end is rotated and is connected in the first end of installed part (1), connecting piece (4) one end is rotated and is connected on support piece (2), and connecting piece (4) other end is rotated and is connected in the second end of installed part (1), the one side that driving medium (3) are close to connecting piece (4) is provided with spacing nail (31), one side that connecting piece (4) are close to spacing nail (31) is provided with first spacing groove (411) and second spacing groove (431) with spacing nail (31) complex, wherein, first spacing groove (411) for second spacing groove (431) are close to installed part (1).

2. A four-bar linkage according to claim 1, wherein: the support (2) is arranged along a second direction, and the second direction is perpendicular to the first direction; with the spacing pin (31) in the first spacing slot (411), the direction of extension of the mounting part (1) is substantially parallel to the second direction, and the second end of the mounting part (1) is close to the support part (2) relative to the first end; under the condition that the limiting nail (31) is positioned in a second limiting groove (431), the extending direction of the mounting part (1) is a third direction, wherein the third direction is respectively perpendicular to the first direction and the second direction.

3. A four-bar linkage according to claim 1, wherein: connecting piece (4) are including installed part section (41), middle section (42) and support piece section (43), installed part section (41), middle section (42) and support piece section (43) fixed connection be for to the bow-shaped of driving medium (3) bending, first spacing groove (411) set up in installed part section (41) are close to the outside of middle section (42) one end, second spacing groove (431) set up in support piece section (43) are close to the outside of middle section (42) one end.

4. A four-bar linkage according to claim 1, wherein: the mounting piece (1) comprises a mounting part (11) and a connecting part (12), a first height increasing part (121) is arranged at one end, close to the connecting piece (4), of the connecting part (12), and the connecting piece (4) is rotatably connected with the first height increasing part (121); one end of the connecting piece (4) close to the supporting piece (2) is provided with a second heightening part (432), and the supporting piece (2) is rotatably connected with the second heightening part (432).

5. A four-bar linkage according to claim 1, wherein: the support (2) is arranged along a second direction; under the condition that the two ends of the transmission piece (3) rotate into a plane perpendicular to the second direction, the extending direction of the installation piece (1) is approximately parallel to the second direction, and the second end of the installation piece (1) is far away from the support piece (2) relative to the first end.

6. A hinged four-bar mechanism according to any one of claims 1 to 5, wherein: the side wall of the limit pin (31) is sleeved with a bushing (32).

7. An attitude adjustment device, characterized in that it comprises one or more articulated four-bar mechanisms according to any one of claims 1 to 6.

8. The attitude adjustment apparatus according to claim 7, wherein in a case where the attitude adjustment apparatus includes a plurality of articulated four-bar mechanisms, at least two of the plurality of articulated four-bar mechanisms are mirror-symmetrical to each other.

9. A bi-postured functional sofa comprising a backrest and a seat frame, characterized in that it further comprises a posture adjustment device according to claim 7 or 8, wherein the support (2) of each four-bar linkage is connected to the seat frame and the mounting (1) of each four-bar linkage is connected to the backrest.

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