Synchronous bending adjusting mechanism for furniture and sofa with synchronous bending adjusting mechanism

Abstract

The utility model discloses a synchronous bending adjusting mechanism for furniture. The synchronous bending adjusting mechanism comprises a mechanism frame body, a telescopic driver, a first multi-section hinge, a second multi-section hinge, a first synchronous rod and a balancing device arranged on the first synchronous rod and the mechanism frame body. The first multi-section hinge and the second multi-section hinge are assembled on the mechanism frame body and are respectively and correspondingly provided with a balancing device, and the input ends of the first multi-section hinge and the second multi-section hinge are respectively in linkage arrangement with the corresponding balancing devices. The telescopic driver comprises a driver body and a telescopic body which slides and stretches in the driver body, one of the driver body and the telescopic body is hinged to the mechanism frame body, and the other one of the driver body and the telescopic body is hinged to the first synchronous rod. The telescopic driver drives the first multi-section hinge and the second multi-section hinge to conduct synchronous bending movement through cooperation of the first synchronous rod and the balance device, so that synchronous bending of the first multi-section hinge and the second multi-section hinge is guaranteed. In addition, the utility model further discloses a sofa.

Description

Technical Field

[0001] The utility model relates to the field of furniture, in particular to a synchronous bending adjustment mechanism for furniture and a sofa with the mechanism. Background Art

[0002] As is known to all, a sofa is a kind of furniture, which comprises a sofa body and a sofa headrest etc. In order to enable the headrest to open and retract relative to the sofa body, the use of a bending adjustment device is indispensable.

[0003] At present, in the existing bending adjustment device, it includes a device frame fixed on the sofa body, multi-section hinges respectively installed on the left and right sides of the device frame for installing the sofa headrest, and electric push rods respectively installed on the left and right sides of the device frame. The electric push rod on the same side is configured to drive the multi-section hinge to perform bending movement, so that the multi-section hinges on the left and right sides jointly drive the sofa headrest to open and retract relative to the sofa body.

[0004] However, in the existing bending adjustment device, the electric push rods on the left and right sides are needed to drive the multi-section hinges on the same side to perform bending movement. Therefore, the bending movement synchronization of the multi-section hinges on the left and right sides is poor, resulting in the sofa opening or

[0005] , and synchronization control is difficult, which involves the control coordination and consistency of the electric push rods on the left and right sides.

[0006] Therefore, there is an urgent need for a synchronous bending adjustment mechanism for furniture and a sofa having the mechanism to overcome one or more of the above-mentioned defects. Utility Model Content

[0007] One object of the utility model is to provide a synchronous bending adjustment mechanism for furniture, which has good bending motion synchronization and is easy to control.

[0008] Another object of the utility model is to provide a sofa with good bending movement synchronization and easy control.

[0009] To achieve the above-mentioned purpose, the furniture synchronous bending adjustment mechanism of the utility model comprises a mechanism frame, a telescopic driver, a first multi-section hinge, a second multi-section hinge, a first synchronous rod and a balancing device. The first multi-section hinge and the second multi-section hinge are each mounted on the mechanism frame and can perform bending motion. The first multi-section hinge and the second multi-section hinge are also arranged side by side with a gap. The first multi-section hinge and the second multi-section hinge each correspond to the balancing device. The input ends of the first multi-section hinge and the second multi-section hinge are each arranged in linkage with the corresponding balancing device. The balancing device is mounted on the first synchronous rod and the mechanism frame. The telescopic driver comprises a driver body and a telescopic body that performs sliding telescoping in the driver body. One of the driver body and the telescopic body is hinged to the mechanism frame, and the other of the driver body and the telescopic body is hinged to the first synchronous rod. The telescopic driver drives the first multi-section hinge and the second multi-section hinge to perform synchronous bending motion through the cooperation of the first synchronous rod and the balancing device.

[0010] Compared with the prior art, with the help of "a first synchronization rod and a balancing device mounted on the first synchronization rod and the mechanism frame, and the first multi-section hinge and the second multi-section hinge each have a corresponding balancing device, the input ends of the first multi-section hinge and the second multi-section hinge are respectively arranged in linkage with the corresponding balancing device, the driver body and one of the telescopic body are hinged to the mechanism frame, and the other of the driver body and the telescopic body are hinged to the first synchronization rod". The design allows the telescopic driver to drive the first multi-section hinge and the second multi-section hinge to perform synchronous bending movements through the cooperation of the first synchronization rod and the balancing device. On the one hand, it can simplify the number of telescopic drivers used and make control easier, and on the other hand, it allows the bending movements of the first multi-section hinge and the second multi-section hinge to have good synchronization.

[0011] Preferably, the balancing device includes a first connecting rod hinged to the mechanism frame, a second connecting rod hinged to the first connecting rod, and a sliding body hinged to the second connecting rod, the sliding body is slidably disposed on the mechanism frame, the sliding body is assembled and connected to the end of the first synchronization rod, and the input ends of the first multi-section hinge and the second multi-section hinge are arranged in linkage with the corresponding sliding body.

[0012] Preferably, the synchronous bending adjustment mechanism for furniture of the present invention also includes a second synchronous rod arranged parallel to the first synchronous rod, one end of the second synchronous rod is assembled and connected with the first connecting rod corresponding to the first multi-section hinge, and the other end of the second synchronous rod is assembled and connected with the first connecting rod corresponding to the second multi-section hinge.

[0013] Preferably, the first connecting rod has a first hinge position for hinged connection with the mechanism frame, a second hinge position for hinged connection with the second connecting rod, and an assembly connection position for assembly connection with the second synchronization rod, and the assembly connection position and the second hinge position are arranged on opposite sides with the first hinge position as the center.

[0014] Preferably, the first connecting rod is bent to form a bent section extending along the parallel direction of the first multi-section hinge and the second multi-section hinge, and the bent section forms the assembly connection position.

[0015] Preferably, the mechanism frame includes a first side frame, a second side frame and an intermediate connecting frame, the first side frame and the second side frame are arranged side by side and separated, the side-by-side direction of the first side frame and the second side frame is the same as the side-by-side direction of the first multi-section hinge and the second multi-section hinge, the first multi-section hinge is assembled on the head end of the first side frame, the second multi-section hinge is assembled on the head end of the second side frame, the intermediate connecting frame is assembled and connected to the tail ends of the first side frame and the second side frame respectively, the first synchronization rod and the balancing device are both located between the first side frame and the second side frame, the telescopic drive is located between the balancing devices corresponding to the first multi-section hinge and the second multi-section hinge, and the drive body or the telescopic body is hinged to the intermediate connecting frame.

[0016] Preferably, the sliding body corresponding to the first multi-section hinge is slidably disposed on the first side frame, a first cross seat arranged across the sliding body along the side-by-side direction is fixed on the first side frame, and the first connecting rod corresponding to the first multi-section hinge is hinged to the first cross seat; the sliding body corresponding to the second multi-section hinge is slidably disposed on the second side frame, a second cross seat arranged across the sliding body along the side-by-side direction is fixed on the second side frame, and the first connecting rod corresponding to the second multi-section hinge is hinged to the second cross seat; the sliding body is provided with a protruding extension section protruding from the sliding body along the side-by-side direction, and the second connecting rod is hinged to the protruding extension section.

[0017] Preferably, the balancing device and the mechanism frame together constitute a crank slider device, the first connecting rod constitutes the crank in the crank slider device, and the sliding body constitutes the slider in the crank slider device; the first multi-section hinge and the second multi-section hinge are both multi-section hinges with teeth.

[0018] Preferably, the input end of the first multi-section hinge and one of the sliding bodies corresponding to the input end are provided with a first linkage protrusion, the input end of the first multi-section hinge and the other of the sliding bodies corresponding to the input end are provided with a first linkage long hole, the first linkage protrusion is placed in the first linkage long hole and can slide in the first linkage long hole; the input end of the second multi-section hinge and one of the sliding bodies corresponding to the input end are provided with a second linkage protrusion, the input end of the second multi-section hinge and the other of the sliding bodies corresponding to the input end are provided with a second linkage long hole, the second linkage protrusion is placed in the second linkage long hole and can slide in the second linkage long hole.

[0019] To achieve the above-mentioned purpose, the sofa of the utility model comprises a sofa body, a sofa headrest and the aforementioned synchronous bending adjustment mechanism for furniture. The mechanism frame is assembled on the sofa body, and the sofa headrest is assembled on the first multi-section hinge and the second multi-section hinge. The telescopic driver drives the first multi-section hinge and the second multi-section hinge to perform synchronous bending motion through the cooperation of the first synchronous rod and the balancing device, thereby realizing the opening and retraction of the sofa headrest.

[0020] Compared with the prior art, with the help of "a first synchronization rod and a balancing device mounted on the first synchronization rod and the mechanism frame, and the first multi-section hinge and the second multi-section hinge each have a corresponding balancing device, the input ends of the first multi-section hinge and the second multi-section hinge are respectively arranged in linkage with the corresponding balancing device, the driver body and one of the telescopic body are hinged to the mechanism frame, and the other of the driver body and the telescopic body are hinged to the first synchronization rod". The telescopic driver can drive the first multi-section hinge and the second multi-section hinge to perform synchronous bending movement through the cooperation of the first synchronization rod and the balancing device. On the one hand, it can simplify the number of telescopic drivers used and make the control easier. On the other hand, it makes the bending movement of the first multi-section hinge and the second multi-section hinge have good synchronization, thereby ensuring that the sofa headrests mounted on the first multi-section hinge and the second multi-section hinge are opened and retracted synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the sofa of the present invention, which shows that the sofa headrest on the left is in an open state and the sofa headrest on the right is in a retracted state.

[0022] Figure 2 The utility model is a stereoscopic diagram of the furniture synchronous bending adjustment mechanism when the first multi-section hinge and the second multi-section hinge are synchronously bent and moved to a certain position in the direction of retracting the sofa headrest.

[0023] Figure 3 yes Figure 2 A three-dimensional image from another angle.

[0024] Figure 4yes Figure 2 A three-dimensional image from another angle.

[0025] Figure 5 yes Figure 4 3D exploded view of .

[0026] Figure 6 yes Figure 2 A three-dimensional image from another angle.

[0027] Figure 7 yes Figure 2 A plan view viewed from the direction opposite to that indicated by arrow A.

[0028] Figure 8 The utility model is a stereoscopic diagram of the furniture synchronous bending adjustment mechanism when the first multi-section hinge and the second multi-section hinge are synchronously bent and moved to a certain position in the direction of opening the sofa headrest.

[0029] Fig. 9 yes Figure 8 A plan view viewed from the direction opposite to that indicated by arrow A. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0031] See also Figure 1 The sofa 100 of the utility model comprises a furniture synchronous bending adjustment mechanism 10, a sofa body 20 and a sofa headrest 30. Optionally, Figure 1 As an example, the sofa headrests 30 are two independent and side-by-side arranged, and each sofa headrest 30 corresponds to a furniture synchronous bending adjustment mechanism 10, so that one furniture synchronous bending adjustment mechanism 10 drives the corresponding sofa headrest 30 to open and retract. Figure 1 The sofa headrest 30 on the left side of the middle can be seen in its retracted state Figure 1 The sofa headrest 30 on the right side. In addition, it should be noted that although Figure 1 The number of sofa headrests 30 is shown as two. Obviously, according to actual needs, the number of sofa headrests 30 can also be one or three. This is a flexible choice made by those skilled in the art according to actual needs. Figure 1 Limits shown.

[0032] Recombination Figures 2 to 6The synchronous bending adjustment mechanism 10 for furniture comprises a mechanism frame 11, a telescopic driver 12, a first multi-section hinge 13, a second multi-section hinge 14, a first synchronous rod 15 and a balancing device 16. The mechanism frame 11 is assembled on a sofa body 20, and the sofa body 20 provides an assembly place and a support function for the mechanism frame 11; the first multi-section hinge 13 and the second multi-section hinge 14 are respectively assembled on the mechanism frame 11, and the mechanism frame 11 provides an assembly place and a support function for the first multi-section hinge 13 and the second multi-section hinge 14; the first multi-section hinge 13 and the second multi-section hinge 14 can perform bending motion, and the first multi-section hinge 13 and the second multi-section hinge 14 are also arranged side by side at intervals and each has a corresponding balancing device 16, for example, at Figures 2 to 6 As an example, the first multi-section hinge 13 corresponds to a balancing device 16, and the second multi-section hinge 14 also corresponds to a balancing device 16, and the input ends 131 (141) of the first multi-section hinge 13 and the second multi-section hinge 14 are respectively arranged in linkage with the corresponding balancing devices 16 to meet the need that one of the two balancing devices 16 links the first multi-section hinge 13 to perform bending movement and the other links the second multi-section hinge 14 to perform bending movement; in addition, the balancing device 16 is assembled on the first synchronization rod 15 and the mechanism frame 11 to meet the need that the two balancing devices 16 are synchronously linked under the action of the first synchronization rod 15.

[0033] At the same time, the sofa headrest 30 is assembled on the first multi-section hinge 13 and the second multi-section hinge 14 to meet the need of the sofa headrest 30 being driven by the first multi-section hinge 13 and the second multi-section hinge 14 to open and retract. Optionally, as an example, one of the two opposite sides of the sofa headrest 30 is assembled and connected with the first multi-section hinge 13, and the other is assembled and connected with the second multi-section hinge 14 to meet the need of the sofa headrest 30 being driven by the two opposite sides to open and retract. In addition, a load-bearing crossbar 18 is fixed between the ends of the first multi-section hinge 13 and the second multi-section hinge 14, and the load-bearing crossbar 18 is also assembled and connected with the sofa headrest 30, so as to support the position of the sofa headrest 30 between the first multi-section hinge 13 and the second multi-section hinge 14 with the help of the load-bearing crossbar 18, thereby effectively avoiding the risk of the sofa headrest 30 being unsupported and collapsing between the first multi-section hinge 13 and the second multi-section hinge 14.

[0034] Furthermore, the telescopic actuator 12 includes an actuator body 121 and a telescopic body 122 that slides and telescopes in the actuator body 121. The actuator body 121 is hinged to the mechanism frame 11, and the telescopic body 122 is hinged to the first synchronization rod 15. Obviously, according to actual needs, the actuator body 121 can also be hinged to the first synchronization rod 15 and the telescopic body 122 can be hinged to the mechanism frame 11. Figures 2 to 6 Limits shown.

[0035] Therefore, during the operation of the telescopic driver 12, the telescopic driver 12 drives the first multi-section hinge 13 and the second multi-section hinge 14 to perform synchronous bending motions through the cooperation of the first synchronization rod 15 and the balancing device 16, thereby realizing the opening and retraction of the sofa headrest 30. Since the bending motions of the first multi-section hinge 13 and the second multi-section hinge 14 are synchronous, the sofa headrest 30 is synchronously opened and retracted.

[0036] More specifically, as follows:

[0037] like Figures 2 to 6 As shown, as an example, the mechanism frame 11 includes a first side frame 11a, a second side frame 11b and an intermediate connecting frame 11c. The first side frame 11a and the second side frame 11b are arranged side by side in a spaced-apart manner, and the side-by-side direction of the first side frame 11a and the second side frame 11b is the same as the side-by-side direction of the first multi-section hinge 13 and the second multi-section hinge 14, that is, the direction indicated by arrow A and the opposite direction. At this time, the first multi-section hinge 14 is assembled at the head end of the first side frame 11a (for example Figure 8 The second multi-section hinge 14 is mounted on the head end of the second side frame 11b (e.g. Figure 8 The middle connecting frame 11c is connected to the tail ends of the first side frame 11a and the second side frame 11b respectively (for example, Figure 8 The first synchronization rod 15 and the balancing device 16 are both located between the first side frame 11a and the second side frame 11b, the telescopic drive 12 is located between the balancing devices 16 corresponding to the first multi-section hinge 13 and the second multi-section hinge 14, and the drive body 121 is hinged to the middle connecting frame 11c. Therefore, by placing the first synchronization rod 15, the balancing device 16 and the telescopic drive 12 between the first side frame 11a and the second side frame 11b, the internal space of the mechanism frame 11 can be effectively utilized, and the first synchronization rod 15, the balancing device 16 and the telescopic drive 12 are protected by the mechanism frame 11, thereby effectively avoiding obstacles to the movement of the first synchronization rod 15, the balancing device 16 and the telescopic drive 12 from the outside, thereby ensuring the smoothness of the movement of the first synchronization rod 15, the balancing device 16 and the telescopic drive 12. Specifically, Figure 5As an example, the telescopic body 122 vertically bisects the first synchronization rod 15, so that the telescopic drive 12 applies force to the center of the first synchronization rod 15; the two balancing devices 16 are symmetrically arranged with the plane that vertically bisects the first synchronization rod 15 as the center, and the first multi-section hinge 13 and the second multi-section hinge 14 are also symmetrically arranged with the plane that vertically bisects the first synchronization rod 15 as the center, so as to ensure the uniformity of the force applied by the first synchronization rod 15 to the two balancing devices 16, and finally ensure the consistency of the force magnitude of the first multi-section hinge 13 and the second multi-section hinge 14; obviously, according to actual needs, the telescopic body 122 can also be made not to bisect the first synchronization rod 15, and similarly, the two balancing devices 16 can also be made not to be symmetrically arranged with the plane that vertically bisects the first synchronization rod 15 as the center, and the first multi-section hinge 13 and the second multi-section hinge 14 can also be made not to be symmetrically arranged with the plane that vertically bisects the first synchronization rod 15 as the center.

[0038] like Figure 4 and Figure 5 As shown, as an example, the balancing device 16 and the mechanism frame 11 together constitute a crank slider device; the balancing device 16 includes a first connecting rod 16a hinged to the mechanism frame 11, a second connecting rod 16b hinged to the first connecting rod 16a, and a sliding body 16c hinged to the second connecting rod 16b. The sliding body 16c is slidably arranged on the mechanism frame 11, and the sliding body 16c is assembled and connected with the end of the first synchronization rod 15, and the sliding body 16c constitutes a slider in the crank slider device. The first connecting rod 16a constitutes a crank in the crank slider device. At this time, the input ends 131 (141) of the first multi-section hinge 13 and the second multi-section hinge 14 are arranged in linkage with the corresponding sliding body 16c. Therefore, when the telescopic actuator 12 drives the first synchronous rod 15 to drive the sliding body 16c to slide along the mechanism frame 11, the sliding sliding body 16c not only drives the second connecting rod 16b to rotate and drives the first connecting rod 16a to rotate around the first hinge position 161 described below (see Figure 5 and Figure 8 ) swings, and at the same time drives the first multi-section hinge 13 and the second multi-section hinge 14 to bend, so that the first multi-section hinge 13 and the second multi-section hinge 14 can move Figure 2 The status shown or Figure 8 It is understandable that when the mechanism frame 11 includes the first side frame 11a, the second side frame 11b and the middle connecting frame 11c, at this time, the sliding body 16c corresponding to the first multi-section hinge 13 is slidably disposed on the first side frame 11a, and the sliding body 16c corresponding to the second multi-section hinge 14 is slidably disposed on the second side frame 11b.

[0039] like Figures 2 to 6As shown, as an example, the input end 131 of the first multi-section hinge 13 is provided with a first linkage protrusion 1311, and the sliding body 16c corresponding to the input end 131 is provided with a first linkage long hole 165, and the first linkage protrusion 1311 is placed in the first linkage long hole 165 and can slide in the first linkage long hole 165, so as to achieve the purpose of the first multi-section hinge 13 being linked by the sliding body 16c corresponding to it, thereby simplifying the linkage structure between the input end 131 of the first multi-section hinge 13 and the sliding body 16c; obviously, according to actual needs, the first linkage protrusion 1311 can be provided by the sliding body 16c corresponding to the input end 131, and correspondingly, the first linkage long hole 165 is opened by the input end 131, so it is not necessary to Figures 2 to 6 For example, the first multi-section hinge 13 is a multi-section hinge with teeth, so that when the corresponding sliding body 16c stops linking the first multi-section hinge 13, the hovering stability of the first multi-section hinge 13 can be increased. Since the specific structure and movement principle of the first multi-section hinge 13 are well known in the art, they will not be described here.

[0040] like Figures 2 to 6 As shown, as an example, the input end 141 of the second multi-section hinge 14 is provided with a second linkage protrusion 1411, and the sliding body 16c corresponding to the input end 141 is provided with a second linkage long hole 166, and the second linkage protrusion 1411 is placed in the second linkage long hole 166 and can slide in the second linkage long hole 166, so as to achieve the purpose of the second multi-section hinge 14 being linked by the sliding body 16c corresponding to it, thereby simplifying the linkage structure between the input end 141 of the second multi-section hinge 14 and the sliding body 16c; obviously, according to actual needs, the second linkage protrusion 1411 can be provided by the sliding body 16c corresponding to the input end 141, and correspondingly, the second linkage long hole 166 is opened by the input end 141, so it is not necessary to Figures 2 to 6 For example, the second multi-section hinge 14 is a multi-section hinge with teeth, so that when the sliding body 16c stops linking the second multi-section hinge 14, the hovering stability of the second multi-section hinge 14 can be increased. Since the specific structure and movement principle of the second multi-section hinge 14 are well known in the art, they will not be described here.

[0041] like Figures 2 to 6 As shown, as an example, the furniture synchronous bending adjustment mechanism 100 further includes a second synchronous rod 17 arranged in parallel with the first synchronous rod 15, and one end of the second synchronous rod 17 (for example Figure 8 The left end of the second synchronization rod 17 in the middle) is assembled and connected with the first connecting rod 16a corresponding to the first multi-section hinge 13, and the other end of the second synchronization rod 17 (for example Figure 8The right end of the second synchronous rod 17 in the middle is assembled and connected with the first connecting rod 16a corresponding to the second multi-section hinge 14. Therefore, the reliability of the synchronous linkage between the two balancing devices 16 is further ensured by the arrangement of the second synchronous rod 17. Figure 5 and Figure 8 In the embodiment, the first connecting rod 16a has a first hinge position 161 for hinged connection with the mechanism frame 11, a second hinge position 162 for hinged connection with the second connecting rod 16b, and an assembly connection position 163 for assembly connection with the second synchronization rod 17. The assembly connection position 163 and the second hinge position 162 are arranged on opposite sides with the first hinge position 161 as the center. This design enables the second synchronization rod 17 to also play the role of a counterweight. More specifically, Figure 5 and Figure 8 As an example, the first connecting rod 16a is bent to form a bending section extending in the parallel direction of the first multi-section hinge 13 and the second multi-section hinge 14, and the bending section forms an assembly connection position 163 to simplify the formation process of the assembly connection position 163.

[0042] like Figures 2 to 6 and Figure 8 As shown, as an example, a first cross seat 111 arranged along a side-by-side direction across the sliding body 16c is fixed on the first side frame 11a, and the first connecting rod 16a corresponding to the first multi-section hinge 13 is hinged to the first cross seat 111; a second cross seat 112 arranged along a side-by-side direction across the sliding body 16c is fixed on the second side frame 11b, and the first connecting rod 16a corresponding to the second multi-section hinge 14 is hinged to the second cross seat 112; the sliding body 16c is provided with a protruding extension section 164 protruding from the sliding body 16c along the side-by-side direction, and the second connecting rod 16b is hinged to the protruding extension section 164; the purpose of such design is: in the two balancing devices 16, when the two first connecting rods 16a and the two second connecting rods 16b are arranged between the two sliding bodies 16c along the side-by-side direction, an avoidance position can be provided for the sliding body 16c sliding on the first side frame 11a and the second side frame 11b.

[0043] Compared with the prior art, the invention adopts the design that “the first synchronization rod 15 and the balancing device 16 mounted on the first synchronization rod 15 and the mechanism frame 11, and the first multi-section hinge 13 and the second multi-section hinge 14 each correspond to the balancing device 16, the input ends 131 (141) of the first multi-section hinge 13 and the second multi-section hinge 14 are respectively arranged in linkage with the corresponding balancing device 16, one of the driver body 121 and the telescopic body 122 is hinged to the mechanism frame 11, and the other of the driver body 121 and the telescopic body 122 is hinged to the first synchronization rod 15”. , so that the telescopic driver 12 can drive the first multi-section hinge 13 and the second multi-section hinge 14 to perform synchronous bending motion through the cooperation of the first synchronization rod 15 and the balancing device 16. On the one hand, the number of telescopic drivers 12 used can be simplified and the control is easy. On the other hand, the bending motion of the first multi-section hinge 13 and the second multi-section hinge 14 has good synchronization, thereby ensuring that the sofa headrest 30 assembled on the first multi-section hinge 13 and the second multi-section hinge 14 is synchronously opened (i.e., synchronously during the opening process) and synchronously retracted (i.e., synchronously during the retraction process).

[0044] It is worth noting that, although the aforementioned synchronous bending adjustment mechanism 10 for furniture is used as the structure of the sofa 100 for description, it is obvious that the synchronous bending adjustment mechanism 10 for furniture can also be applied to other furniture besides the sofa 100, so it is not limited to the occasion where the synchronous bending adjustment mechanism 10 for furniture can only be applied to the sofa 100. In addition, the telescopic drive 12 is an electric push rod, so that the bending movement of both the first multi-section hinge 13 and the second multi-section hinge 14 can be suspended at any position. Obviously, according to actual needs, the telescopic drive 12 can also be other drives. In addition, the telescopic body 122 drives the sliding bodies 16c of the two balancing devices 16 to slide synchronously through the first synchronous rod 15 during the process of extending the drive body 121, so that the two sliding bodies 16c drive the corresponding first multi-section hinge 13 and the second multi-section hinge 14 to perform synchronous bending movement, and finally realizes the movement of the sofa headrest 30 being retracted by the first multi-section hinge 13 and the second multi-section hinge 14 together, as shown in the state. Figure 7 As shown, correspondingly, the telescopic body 122 finally causes the first multi-section hinge 13 and the second multi-section hinge 14 to jointly drive the sofa headrest 30 to open during the process of retracting the driver body 121, as shown in FIG. Fig. 9 As shown, but not limited to.

[0045] The above disclosure is only a preferred example of the present invention, and its role is to facilitate the technical personnel in this field to understand and implement it. Of course, it cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A synchronous bending adjustment mechanism for furniture, comprising a mechanism frame, a telescopic driver, and a first multi-section hinge and a second multi-section hinge each mounted on the mechanism frame and capable of bending movement, wherein the first multi-section hinge and the second multi-section hinge are arranged side by side and spaced apart, and the telescopic driver comprises a driver body and a telescopic body that slides and telescopes in the driver body, characterized in that: The synchronous bending adjustment mechanism for furniture also includes a first synchronous rod and a balancing device mounted on the first synchronous rod and the mechanism frame, the first multi-section hinge and the second multi-section hinge each correspond to the balancing device, the input ends of the first multi-section hinge and the second multi-section hinge are each linked to the corresponding balancing device, one of the driver body and the telescopic body is hinged to the mechanism frame, and the other of the driver body and the telescopic body is hinged to the first synchronous rod, and the telescopic driver drives the first multi-section hinge and the second multi-section hinge to perform synchronous bending movement through the cooperation of the first synchronous rod and the balancing device.

2. The synchronous bending adjustment mechanism for furniture according to claim 1, characterized in that: The balancing device includes a first connecting rod hinged to the mechanism frame, a second connecting rod hinged to the first connecting rod, and a sliding body hinged to the second connecting rod. The sliding body is slidably disposed on the mechanism frame, and the sliding body is assembled and connected to the end of the first synchronization rod. The input ends of the first multi-section hinge and the second multi-section hinge are arranged in linkage with the corresponding sliding body.

3. The synchronous bending adjustment mechanism for furniture according to claim 2, characterized in that: It also includes a second synchronization rod arranged in parallel with the first synchronization rod, one end of the second synchronization rod is assembled and connected with the first connecting rod corresponding to the first multi-section hinge, and the other end of the second synchronization rod is assembled and connected with the first connecting rod corresponding to the second multi-section hinge.

4. The synchronous bending adjustment mechanism for furniture according to claim 3, characterized in that: The first connecting rod has a first hinge position for hingedly connecting to the mechanism frame, a second hinge position for hingedly connecting to the second connecting rod, and an assembly connection position for assembling and connecting to the second synchronization rod. The assembly connection position and the second hinge position are arranged on opposite sides with the first hinge position as the center.

5. The synchronous bending adjustment mechanism for furniture according to claim 4, characterized in that: The first connecting rod is bent to form a bent section extending along the parallel direction of the first multi-section hinge and the second multi-section hinge, and the bent section forms the assembly connection position.

6. The synchronous bending adjustment mechanism for furniture according to claim 2, characterized in that: The mechanism frame includes a first side frame, a second side frame and an intermediate connecting frame. The first side frame and the second side frame are arranged side by side in a separated manner. The side-by-side direction of the first side frame and the second side frame is the same as the side-by-side direction of the first multi-section hinge and the second multi-section hinge. The first multi-section hinge is assembled on the head end of the first side frame, and the second multi-section hinge is assembled on the head end of the second side frame. The intermediate connecting frame is assembled and connected to the tail ends of the first side frame and the second side frame respectively. The first synchronization rod and the balancing device are both located between the first side frame and the second side frame. The telescopic drive is located between the balancing devices corresponding to the first multi-section hinge and the second multi-section hinge. The drive body or the telescopic body is hinged to the intermediate connecting frame.

7. The synchronous bending adjustment mechanism for furniture according to claim 6, characterized in that: The sliding body corresponding to the first multi-section hinge is slidably disposed on the first side frame, a first cross seat arranged across the sliding body along the side-by-side direction is fixed on the first side frame, and the first connecting rod corresponding to the first multi-section hinge is hinged to the first cross seat; the sliding body corresponding to the second multi-section hinge is slidably disposed on the second side frame, a second cross seat arranged across the sliding body along the side-by-side direction is fixed on the second side frame, and the first connecting rod corresponding to the second multi-section hinge is hinged to the second cross seat; the sliding body is provided with a protruding extension section protruding from the sliding body along the side-by-side direction, and the second connecting rod is hinged to the protruding extension section.

8. The synchronous bending adjustment mechanism for furniture according to claim 2, characterized in that: The balancing device and the mechanism frame together constitute a crank slider device, the first connecting rod constitutes the crank in the crank slider device, and the sliding body constitutes the slider in the crank slider device; the first multi-section hinge and the second multi-section hinge are both multi-section hinges with teeth.

9. The synchronous bending adjustment mechanism for furniture according to claim 2, characterized in that: One of the input end of the first multi-section hinge and the sliding body corresponding to the input end is provided with a first linkage protrusion, and the other of the input end of the first multi-section hinge and the sliding body corresponding to the input end is provided with a first linkage long hole, and the first linkage protrusion is placed in the first linkage long hole and can slide in the first linkage long hole; the input end of the second multi-section hinge and the sliding body corresponding to the input end are provided with a second linkage protrusion, and the input end of the second multi-section hinge and the sliding body corresponding to the input end are provided with a second linkage long hole, and the second linkage protrusion is placed in the second linkage long hole and can slide in the second linkage long hole.

10. A sofa, comprising a sofa body and a sofa headrest, characterized in that: The sofa also includes a synchronous bending adjustment mechanism for furniture according to any one of claims 1 to 9, the mechanism frame is assembled on the sofa body, the sofa headrest is assembled on the first multi-section hinge and the second multi-section hinge, and the telescopic driver drives the first multi-section hinge and the second multi-section hinge to perform synchronous bending movement through the cooperation of the first synchronization rod and the balancing device, thereby realizing the opening and retraction of the sofa headrest.

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