CN216723847U

CN216723847U - Extension frame of leisure chair

Info

Publication number: CN216723847U
Application number: CN202123364095.XU
Authority: CN
Inventors: 卢伟
Original assignee: Dongguan Weihong Smart Home Technology Co Ltd
Current assignee: Dongguan Weihong Smart Home Technology Co Ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-06-14
Anticipated expiration: 2031-12-28

Abstract

The utility model discloses a leisure chair stretching frame which comprises a bearing frame, a backrest frame, a leg supporting frame, a first driving device, a connecting rod assembly and a second driving device, wherein the bottom of the backrest frame is pivoted with the bearing frame; the leg support frame is pivoted with the bearing frame, the second driving device is arranged on the bearing frame, the connecting rod assembly is arranged at the output end of the second driving device and pivoted with the leg support frame, and the connecting rod assembly is driven by the second driving device to move and drive the leg support frame to rotate around the pivoting point of the connecting rod assembly and the bearing frame so as to unfold or fold the leg support frame. The extension frame of the leisure chair can be automatically folded and unfolded and is driven by an electric motor, and the extension frame has the advantage of simple structure.

Description

Extension frame of leisure chair

Technical Field

The utility model relates to the field of furniture, in particular to a foldable extension rack of a leisure chair.

Background

The folding chair is one of common furniture, however, the skeleton structure that present folding chair all is manual to fold up basically, but along with consumer's user demand, electronic folding chair's demand is bigger and bigger, but the skeleton overall structure of present electronic folding chair sets up very complicacy, and the cost of production is also very big, so can't satisfy present production demand.

In order to solve the above problems, there is a need for an extension frame of a leisure chair.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic folding and unfolding and electric driving leisure chair stretching frame which has the advantages of simple structure and low production cost.

In order to achieve the above object, the stretching frame of the leisure chair provided by the utility model comprises a bearing frame, a backrest frame, a leg support frame, a first driving device, a connecting rod assembly and a second driving device, wherein the bottom of the backrest frame is pivoted with the bearing frame; the leg support frame is pivoted with the bearing frame, the second driving device is installed on the bearing frame, the connecting rod assembly is installed at the output end of the second driving device and pivoted with the leg support frame, and the connecting rod assembly is driven by the second driving device to move and drive the leg support frame to rotate around the pivoting point of the leg support frame and the bearing frame so as to unfold or fold the leg support frame.

Preferably, the lower portion of the backrest frame extends towards the bearing frame to form a first connecting rod, the bottom of the backrest frame extends towards the first driving device to form a second connecting rod, the output end of the first driving device is connected with the bearing frame, the head of the first driving device is pivoted with the second connecting rod, and the first connecting rod is pivoted with the bearing frame.

Specifically, bear the frame to first drive arrangement extends and forms the mounting bracket, the mounting bracket is including installation horizontal pole and installation montant, the installation horizontal pole with the installation montant is perpendicular, the one end of installation horizontal pole with bear the frame and connect, the other end of installation horizontal pole with the one end of installation montant is connected, the other end of installation montant with bear the frame and connect, first drive arrangement's output with the installation montant is connected.

Preferably, the connecting rod assembly includes a driving cross rod and a first connecting rod, the driving cross rod is pivoted with the output end of the second driving device, one end of the first connecting rod is pivoted with the driving cross rod, the other end of the first connecting rod is pivoted with the leg support frame, and the driving cross rod moves relative to the bearing frame and drives the first connecting rod to drive the leg support frame to swing under the driving of the second driving device.

Specifically, leisure chaise longue extension frame still include the direction subassembly, the direction subassembly includes first pendulum rod, carriage release lever and second pendulum rod, the one end of first pendulum rod with bear the pivot joint, the other end of first pendulum rod with the one end pin joint of carriage release lever, the other end of carriage release lever with the one end pin joint of second pendulum rod, the other end of second pendulum rod with bear the pivot joint, first pendulum rod, carriage release lever, second pendulum rod and bear the frame and form four link mechanism jointly, the drive horizontal pole with the carriage release lever is connected, the drive horizontal pole is relative bear the frame and remove and link four link mechanism expandes or receive to close.

Specifically, two sides of the driving cross rod are connected with the four-bar mechanism.

Preferably, the leg supporting frame includes a fixed frame and a movable frame, the fixed frame is pivoted to the bearing frame, the movable frame is slidably disposed on the fixed frame, and the movable frame moves relative to the fixed frame to unfold or fold the leg supporting frame.

Specifically, the leg support frame further comprises a guide rail assembly, and the guide rail assembly is arranged between the fixed frame and the movable frame.

Specifically, the leg support frame further comprises a sliding locking mechanism, the sliding locking mechanism comprises a first pivot rod, a second pivot rod and a locking piece, one end of the first pivot rod is pivoted with the movable frame, one end of the second pivot rod is pivoted with the other end of the first pivot rod, the other end of the second pivot rod is connected with the locking piece, and the pivoting between the first pivot rod and the second pivot rod is locked by the locking piece.

Preferably, the backrest frame comprises a first frame body and a second frame body, the first frame body is pivoted with one end of the second frame body, the other end of the second frame body is pivoted with the bearing frame, and the first frame body and the second frame body are pivoted and folded relatively.

Compared with the prior art, the leisure chair stretching frame is characterized in that the bearing frame, the backrest frame, the leg support frame, the first driving device, the connecting rod assembly, the second driving device and the like are combined together, the bottom of the backrest frame is pivoted with the bearing frame, the first driving device is arranged between the bearing frame and the backrest frame, the first driving device is pivoted with the backrest frame, the backrest frame is driven to rotate around the pivoting point of the backrest frame and the bearing frame by means of the stretching of the first driving device so as to unfold or fold the backrest frame, namely, the first driving device, the backrest frame and the bearing frame jointly form a linkage structure, and the electric stretching of the first driving device enables the backrest frame to rotate around the bearing frame, so that the automatic unfolding or folding of the backrest frame is realized, the structure is simple, and the cost is low; the leg support frame is pivoted with the bearing frame, the leg support frame is unfolded or folded relative to the bearing frame through rotation of the leg support frame, the second driving device is installed on the bearing frame, the connecting rod assembly is installed at the output end of the second driving device and is pivoted with the leg support frame, the connecting rod assembly is driven by the second driving device to move and drive the leg support frame to rotate around the pivoting point of the connecting rod assembly and the bearing frame, so that the leg support frame is unfolded or folded, namely the connecting rod assembly forms a power transmission structure between the leg support frame and the second driving device, the leg support frame is enabled to pivot automatically relative to the bearing frame, and automatic unfolding or folding of the leg support frame is achieved. The extension frame of the leisure chair has the advantage of simple structure.

Drawings

Fig. 1 is a perspective view of the leisure chair extension frame of the utility model in an unfolded state.

Fig. 2 is a partial perspective view of the leisure chair extension frame of the utility model in an extended state.

Fig. 3 is a side view of the leisure chair of the utility model extending the frame and in a deployed state.

Fig. 4 is a perspective view of the leisure chair of the utility model in a folded state with the frame extended.

Fig. 5 is a side view of the leisure chair of the utility model in a folded state with the frame extended.

Detailed Description

Referring to fig. 1 to 5, a specific structure of a leisure chair stretching frame 100 of the utility model is shown, which includes a supporting frame 1, a backrest frame 2, a leg supporting frame 3, a first driving device 4, a connecting rod assembly 5 and a second driving device 6, wherein the supporting legs 10 for moving are disposed at the bottom of the supporting frame 1, the supporting frame 1 is a rectangular frame structure, the bottom of the backrest frame 2 is pivoted with the supporting frame 1, the first driving device 4 is disposed between the supporting frame 1 and the backrest frame 2, the first driving device 4 is pivoted with the backrest frame 2, the backrest frame 2 is driven to rotate around the pivoting point of the supporting frame 1 (the pivoting point is a point a in fig. 1) by the stretching of the first driving device 4, so as to unfold or fold the backrest frame 2, that is, the first driving device 4, the backrest frame 2 and the supporting frame 1 together form a linkage structure, the electric stretching of the first driving device 4 makes the backrest frame 2 rotate around the supporting frame 1, thereby realizing the automatic unfolding or folding of the backrest frame 2, and having simple structure and low cost; the leg supporting frame 3 is pivoted with the bearing frame 1 (the pivot point is a point b in fig. 2), the leg supporting frame 3 is unfolded or folded by the rotation of the leg supporting frame 3 relative to the bearing frame 1, the second driving device 6 is installed on the bearing frame 1, the connecting rod assembly 5 is installed at the output end of the second driving device 6, the connecting rod assembly 5 is pivoted with the leg supporting frame 3, the connecting rod assembly 5 is driven by the second driving device 6 to move and drive the leg supporting frame 3 to rotate around the pivot point of the connecting rod assembly and the bearing frame 1, so as to unfold or fold the leg supporting frame 3, namely, the connecting rod assembly 5 forms a power transmission assembly between the leg supporting frame 3 and the second driving device 6, so that the leg supporting frame 3 automatically pivots relative to the bearing frame 1, thereby realizing the automatic unfolding or folding of the leg supporting frame 3, and the structure is simple and the cost is low. The leisure chair extension frame 100 of the present invention has an advantage of simple structure. Preferably, the first driving device 4 and the second driving device 6 are both driving motors, and the output end of the driving motor is provided with a telescopic rod, so that the driving motor is used for realizing electric driving. More specifically, the following:

referring to fig. 1 to 2, a first connecting rod 21 extends from the lower portion of the backrest frame 2 to the supporting frame 1, a second connecting rod 22 extends from the bottom of the backrest frame 2 to the first driving device 4, the first connecting rod 21 and the second connecting rod 22 are both used for connection, the first connecting rod 21 is located above the second connecting rod 22, the output end of the first driving device 4 is connected to the supporting frame 1, the head of the first driving device 4 is pivoted to the second connecting rod 22, and the first connecting rod 21 is pivoted to the supporting frame 1. Specifically, bear frame 1 and extend to first drive arrangement 4 and form mounting bracket 11, mounting bracket 11 is including installation horizontal pole 111 and installation montant 112, installation horizontal pole 111 is perpendicular with installation montant 112, the one end of installation horizontal pole 111 is connected with bearing frame 1, the other end of installation horizontal pole 111 is connected with the one end of installation montant 112, the other end of installation montant 112 is connected with bearing frame 1, the output and the installation montant 112 of first drive arrangement 4 are connected, mounting bracket 11 can form the extension, thereby be convenient for first drive arrangement 4's connection, mounting bracket 11 encloses into miniature rectangular frame structure with bearing frame 1 jointly.

Referring to fig. 1 to 3, the connecting rod assembly 5 includes a driving cross rod 51 and a first connecting rod 52, the driving cross rod 51 is pivotally connected to an output end of the second driving device 6, one end of the first connecting rod 52 is pivotally connected to the driving cross rod 51, the other end of the first connecting rod 52 is pivotally connected to the leg supporting frame 3, and the driving cross rod 51 moves relative to the supporting frame 1 under the driving of the second driving device 6 and links the first connecting rod 52 to drive the leg supporting frame 3 to swing. Specifically, the stretching frame 100 of the leisure chair of the utility model further includes a guide assembly 7, the guide assembly 7 includes a first swing link 71, a moving rod 72 and a second swing link 73, one end of the first swing link 71 is pivoted with the bearing frame 1, the other end of the first swing link 71 is pivoted with one end of the moving rod 72, the other end of the moving rod 72 is pivoted with one end of the second swing link 73, the other end of the second swing link 73 is pivoted with the bearing frame 1, the first swing link 71, the moving rod 72, the second swing link 73 and the bearing frame 1 together form a four-bar mechanism, the driving cross bar 51 is connected with the moving rod 72, the driving cross bar 51 moves relative to the bearing frame 1 and links the four-bar mechanism to unfold or fold, and preferably, two sides of the driving cross bar 51 are connected with a four-bar mechanism. In other words, the four-bar linkage is formed to be able to form not only the connection between the carrier 1 and the driving rail 51 but also to guide the movement of the driving rail 51, thereby allowing the driving rail 51 to move more stably and smoothly with respect to the carrier 1.

Referring to fig. 1 to 2, the leg supporting frame 3 includes a fixed frame 31 and a movable frame 32, the fixed frame 31 is pivotally connected to the carrying frame 1, the movable frame 32 is slidably disposed on the fixed frame 31, and the movable frame 32 moves relative to the fixed frame 31 to unfold or fold the leg supporting frame 3. Leg support frame 3 still includes rail set spare 8, and rail set spare 8 is located between mount 31 and the removal frame 32, and rail set spare 8 includes interior rail 81 and outer rail 82, and one in interior rail 81 and the outer rail 82 is connected with mount 31, and another in interior rail 81 and the outer rail 82 is connected with the removal frame 32, and outer rail 82 is located to interior rail 81 cunningly. The leg support 3 further includes a sliding locking mechanism 9, the sliding locking mechanism 9 includes a first pivot rod 91, a second pivot rod 92 and a locking member 93, one end of the first pivot rod 91 is pivotally connected to the moving frame 32, one end of the second pivot rod 92 is pivotally connected to the other end of the first pivot rod 91, the other end of the second pivot rod 92 is connected to the locking member 93, the pivoting between the first pivot rod 91 and the second pivot rod 92 is locked by the locking member 93, and the locking member 93 is an engaging groove structure having a gear position.

Referring to fig. 1 to 4, the backrest frame 2 includes a first frame 23 and a second frame 24, the first frame 23 is pivotally connected to one end of the second frame 24, the other end of the second frame 24 is pivotally connected to the carrying frame 1, and the first frame 23 and the second frame 24 are relatively pivotally folded, so as to fold the backrest frame 2.

In summary, referring to fig. 1 to 4, the working process of the extension frame 100 of the leisure chair of the present invention will be described in detail:

the unfolded state of the leisure chair extending frame 100 is as shown in fig. 1 to 3, when it needs to be folded, the output end of the first driving device 4 extends, the pivot point of the backrest frame 2 and the bearing frame 1 is point a, the extension of the first driving device 4 drives the backrest frame 2 to rotate around the pivot point a of the backrest frame 2 and the bearing frame 1 (the rotation direction is as indicated by arrow a in fig. 1), so as to fold the backrest frame 2 to a certain angle relative to the bearing frame 1; meanwhile, the output end of the second driving device 6 is retracted, the driving cross bar 51, the first connecting rod 52, the leg support 3, the second driving device 6 and the carrier 1 together form a link mechanism, the pivot point of the leg support 3 and the carrier 1 is point B, the retraction of the second driving device 6 drives the driving cross bar 51 to move along the direction indicated by arrow C in fig. 1 and drives the first connecting rod 52 to drive the leg support 3 to rotate around the pivot point B of the leg support and the carrier 1 (the rotation direction is indicated by arrow B in fig. 2), thereby realizing the folding of the leg supporting frame 3, the folded state is as shown in fig. 4 to fig. 5, the moving frame 32 moves relative to the fixed frame 31 through the guide rail assembly 8, thereby realize that leg support frame 3 lengthens or contracts, first support body 23 and the second support body 24 of back to frame 2 also can fold up or expand according to the circumstances. When the unfolding is needed, the actions are repeated reversely.

By combining the bearing frame 1, the back rest frame 2, the leg support frame 3, the first driving device 4, the connecting rod assembly 5, the second driving device 6 and the like together, the bottom of the back rest frame 2 is pivoted with the bearing frame 1, the first driving device 4 is arranged between the bearing frame 1 and the back rest frame 2, the first driving device 4 is pivoted with the back rest frame 2, the back rest frame 2 is driven to rotate around the pivoting point of the back rest frame 2 and the bearing frame 1 by means of the stretching of the first driving device 4, so as to unfold or fold the back rest frame 2, namely, the first driving device 4, the back rest frame 2 and the bearing frame 1 jointly form a linkage structure, and the electric stretching of the first driving device 4 enables the back rest frame 2 to rotate around the bearing frame 1, so that the back rest frame 2 can be automatically unfolded or folded, and the structure is simple and low in cost; the leg support frame 3 is pivoted with the bearing frame 1, the leg support frame 3 is unfolded or folded relative to the rotation of the bearing frame 1, the second driving device 6 is installed on the bearing frame 1, the connecting rod assembly 5 is installed at the output end of the second driving device 6, the connecting rod assembly 5 is pivoted with the leg support frame 3, the connecting rod assembly 5 is driven by the second driving device 6 to move and drive the leg support frame 3 to rotate around the pivoting point of the connecting rod assembly and the bearing frame 1, so as to unfold or fold the leg support frame 3, namely, the connecting rod assembly 5 forms a power transmission structure between the leg support frame 3 and the second driving device 6, so that the leg support frame 3 is automatically pivoted relative to the bearing frame 1, thereby realizing the automatic unfolding or folding of the leg support frame 3, the structure is simple, and the cost is low. The leisure chair extension frame 100 of the present invention has an advantage of simple structure.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.

Claims

1. A leisure chair stretching frame is characterized by comprising a bearing frame, a backrest frame, a leg supporting frame, a first driving device, a connecting rod assembly and a second driving device, wherein the bottom of the backrest frame is pivoted with the bearing frame; the leg support frame is pivoted with the bearing frame, the second driving device is installed on the bearing frame, the connecting rod assembly is installed at the output end of the second driving device and pivoted with the leg support frame, and the connecting rod assembly is driven by the second driving device to move and drive the leg support frame to rotate around the pivoting point of the leg support frame and the bearing frame so as to unfold or fold the leg support frame.

2. The leisure chair spreader of claim 1, wherein the lower portion of the backrest frame extends toward the carrier frame to form a first connecting rod, the bottom portion of the backrest frame extends toward the first driving device to form a second connecting rod, the output end of the first driving device is connected to the carrier frame, the head portion of the first driving device is pivotally connected to the second connecting rod, and the first connecting rod is pivotally connected to the carrier frame.

3. The leisure chair spreader of claim 2, wherein the carrier extends toward the first driving device to form a mounting bracket, the mounting bracket comprising a mounting rail and a mounting post, the mounting rail being perpendicular to the mounting post, one end of the mounting rail being connected to the carrier, the other end of the mounting rail being connected to one end of the mounting post, the other end of the mounting post being connected to the carrier, the output of the first driving device being connected to the mounting post.

4. The leisure chair stretcher according to claim 1, wherein the linkage assembly comprises a driving cross bar and a first link, the driving cross bar is pivotally connected to the output end of the second driving device, one end of the first link is pivotally connected to the driving cross bar, the other end of the first link is pivotally connected to the leg support frame, and the driving cross bar moves relative to the carrier frame under the driving of the second driving device and links the first link to drive the leg support frame to swing.

5. The leisure chair spreader according to claim 4, further comprising a guide assembly, wherein the guide assembly comprises a first swing link, a movable rod and a second swing link, one end of the first swing link is pivotally connected to the carrier, the other end of the first swing link is pivotally connected to one end of the movable rod, the other end of the movable rod is pivotally connected to one end of the second swing link, the other end of the second swing link is pivotally connected to the carrier, the first swing link, the movable rod, the second swing link and the carrier together form a four-bar linkage, the driving cross bar is connected to the movable rod, and the driving cross bar moves relative to the carrier and links the four-bar linkage to be spread or folded.

6. The leisure chair extension frame of claim 5, wherein the four bar linkage is attached to both sides of the drive crossbar.

7. The leisure chair stretcher according to claim 1, wherein the leg support frame comprises a fixed frame and a movable frame, the fixed frame is pivotally connected to the bearing frame, the movable frame is slidably disposed on the fixed frame, and the movable frame moves relative to the fixed frame to unfold or fold the leg support frame.

8. The leisure chair extension stand of claim 7, wherein the leg support further comprises a rail assembly disposed between the fixed frame and the mobile frame.

9. The leisure chair extension frame according to claim 7, wherein the leg support frame further comprises a slip locking mechanism, the slip locking mechanism comprising a first pivot rod, a second pivot rod and a locking piece, one end of the first pivot rod is pivotally connected to the moving frame, one end of the second pivot rod is pivotally connected to the other end of the first pivot rod, the other end of the second pivot rod is connected to the locking piece, and the pivoting between the first pivot rod and the second pivot rod is locked by the locking piece.

10. The leisure chair extension frame according to claim 1, wherein the backrest frame comprises a first frame body and a second frame body, the first frame body is pivoted with one end of the second frame body, the other end of the second frame body is pivoted with the bearing frame, and the first frame body and the second frame body are relatively pivoted and folded.