Integrated Sofa Sliding and Extending Function Frame

Abstract

The present invention provides an integrated sofa sliding and stretching function frame, which relates to the field of sofa seats and includes a chair frame base and a movable frame body. The movable frame body includes a seat cushion mounting rod, a footrest assembly, and a backrest assembly. The seat cushion mounting rod is hinged to the footrest assembly. The movable frame body is slidably assembled on the chair frame base. The movable frame body slides relative to the chair frame base to form an extended or contracted state. The beneficial effect of the present invention is that a chair frame base is provided, and a movable frame body is slidably connected to the chair frame base. The movable frame body is provided with a seat cushion mounting rod, and the seat cushion of the sofa chair is connected to the seat cushion mounting rod. Therefore, the seat cushion of the sofa chair can slide relative to the chair frame base, and the movement of the seat cushion relative to the chair frame base ensures that the lower half of the entire chair frame does not vibrate during the entire adjustment process, making the entire chair frame more durable.

Description

Technical Field

[0001] The present invention relates to the field of sofa seats, and in particular to an integrated sofa sliding and stretching function frame. Background Art

[0002] With the improvement of living standards, people have higher and higher requirements for the comfort of sofa seats. At present, in addition to meeting the basic seat functions, many sofa seats on the market have added functions such as footrests and backrests. Moreover, in order to save space, both the footrests and backrests can be retracted or extended. However, when most sofa chairs on the market unfold the footrests and backrests, the seat cushions do not slide relative to the seat bases. In fact, when a person lies on a sofa chair, as the feet are lifted and the back is lowered, the buttocks will also move accordingly. But when most seat cushions do not move, when the footrests and backrests are lowered, the people sitting on them have to adjust their postures by themselves, which is not very user-friendly to the people sitting on them.

[0003] The technical content disclosed in the Chinese patent document (Application No.: 201620126706.7, Patent Name: A Leisure Chair with a Footrest and a Seat Cushion Linked) is as follows: The present invention relates to the technical field of leisure chairs, and more specifically to a leisure chair with a footrest and a seat cushion linked. A leisure chair with a footrest and a seat cushion linked includes a backrest, a seat cushion, a bracket and a base. The bottom end of the backrest is rotatably connected to the rear end of the seat cushion. The seat cushion is arranged above the bracket, and the bracket is arranged on the base. Among them, a footrest is arranged between the seat cushion and the bracket. A seat cushion driving device is fixed on the bracket, and the seat cushion driving device is connected to the bottom end of the seat cushion. When the seat cushion driving device drives the seat cushion to move backward, the seat cushion will push the footrest to extend forward. When the seat cushion driving device drives the seat cushion to move forward, the seat cushion will drive the footrest to retract backward. The structure of the present invention is simple and easy to use. When the user adjusts the seat cushion of the leisure chair, the footrest will move in linkage with the seat cushion and does not need to be adjusted separately.

[0004] As can be seen from the above implementation, when the seat cushion of the leisure chair moves under the drive of the driving device, the footrest extends or retracts accordingly. And from the schematic diagram of this solution, it can be seen that the seat cushion is directly connected to the bracket of the chair and moves together. In this connection mode, when the seat cushion moves, the entire bracket of the chair needs to move together, which will cause a large force on the chair bracket. And this way of moving the seat cushion and the chair bracket together will also cause a large vibration of the entire chair when adjusting the angle of the chair, reducing the comfort of the human body. Summary of the Invention

[0005] The present invention provides an integrated sofa sliding and stretching function frame, which can overcome the defects of the prior art mentioned in the background art.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0007] An integrated sofa sliding and stretching functional frame, comprising a chair frame base and a moving frame body, wherein the moving frame body includes a seat cushion mounting rod, a footrest assembly and a backrest assembly;

[0008] The seat cushion mounting rod is hinged to the footrest assembly;

[0009] The moving frame body is slidably assembled on the chair frame base;

[0010] The moving frame body slides relative to the chair frame base to form an extended or contracted state.

[0011] Furthermore, side frame bodies of the chair frame base are provided on both sides of the chair frame base, and the side frame bodies on both sides of the chair frame base are connected by a base first connecting rod, a base second connecting rod and a base third connecting rod;

[0012] Guide grooves are provided on the side frame bodies of the base, and the moving frame body is slidably connected to the guide grooves;

[0013] Alternatively, a downward inclined guide groove and an upward inclined guide groove are provided on the side frame bodies of the base; the moving frame body is slidably connected to the downward inclined guide groove and the upward inclined guide groove.

[0014] Furthermore, the downward inclined guide groove is a first sliding track, and the upward inclined guide groove includes a second sliding track and a third sliding track, and the slope of the second sliding track is smaller than that of the third sliding track.

[0015] Furthermore, moving frame bodies are provided on both sides above the chair frame base, and the moving frame bodies on both sides above the chair frame base are connected by a central axis. The chair frame base is connected with a power assembly, and a push rod of the power assembly is connected to the central axis. When the central axis is pushed by the power assembly towards the footrest assembly, the footrest assembly will be driven to unfold, and when the central axis is pushed by the power assembly towards the footrest assembly, the backrest assembly will be driven to extend away from the mounting rod; a strengthening rod is connected between the mounting rods on both sides.

[0016] When the central axis is pulled back by the power assembly towards the footrest assembly, the footrest assembly will be driven to contract, and when the central axis is pulled back by the power assembly towards the footrest assembly, the backrest assembly will be driven to retract towards the mounting rod.

[0017] Further, the seat cushion mounting rod includes a sliding connection surface and a seat cushion mounting surface. A seat cushion is externally connected above the seat cushion mounting surface. The lower end of the sliding connection surface includes a backrest assembly connection hole, a first sliding hole, a second sliding hole, and a telescopic rod rotation hole. The backrest assembly connection hole is slidably connected to the first sliding track. The first sliding hole is slidably connected to the second sliding track. The second sliding hole is slidably connected to the third sliding track.

[0018] Further, one end of the side frame of the base is provided with a rotary sliding groove. A telescopic base is fixedly connected to the second link of the base. The telescopic base includes a fixing hole and a base rotation hole. The fixing hole is fixedly inserted into the second link of the base. The base rotation hole is rotatably connected to a rotary base rod.

[0019] Further, a rotation hole is provided in the middle of the rotary base rod. Base connection holes and backrest connection holes are respectively provided at both ends of the rotary base rod. A rotary sliding block is rotatably connected to the base connection hole. The rotary sliding block is slidably connected to the rotary sliding groove. The backrest connection hole is rotatably connected to a backrest assembly.

[0020] Further, the backrest assembly includes a first backrest connecting member, a second backrest connecting member, a third backrest connecting member, and a fourth backrest connecting member. The first backrest connecting member, the second backrest connecting member, the third backrest connecting member, and the fourth backrest connecting member are connected to each other to form a closed loop.

[0021] Further, the footrest assembly includes a first telescopic rod, a second telescopic rod, a third telescopic rod, a fourth telescopic rod, a fifth telescopic rod, a sixth telescopic rod, and a first footrest support rod that are alternately rotatably connected together.

[0022] Further, the seat cushion mounting rod includes a telescopic first connection hole, a telescopic second connection hole, and a spring seat mounting hole. The telescopic first connection hole is rotatably connected to one end of the third telescopic rod. The first telescopic rod includes a first telescopic rod rotation hole. The first telescopic rod rotation hole is rotatably connected to the telescopic second connection hole. One end of the first telescopic rod is connected with a first spring connection nail. The spring seat mounting hole is connected with a second spring connection nail. One end of a tension spring is connected to the first spring connection nail. The other end of the tension spring is connected to the second spring connection nail. A middle shaft connection block is connected to the middle position of the first telescopic rod. The middle shaft connection block includes a middle shaft connection surface. The middle shaft connection surface is connected to the middle shaft.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] The present invention provides an integrated sliding and stretching function frame for a sofa, which is provided with a chair frame base. A movable frame body is slidably connected to the chair frame base. The movable frame body is provided with a cushion mounting rod, and the cushion of the sofa chair is connected to the cushion mounting rod. Therefore, the cushion of the sofa chair can slide relative to the chair frame base. One end of the cushion mounting rod is connected to a footrest assembly, and the other end is connected to a backrest assembly. A spring is also connected between the footrest assembly and the cushion mounting rod. When the footrest needs to be extended, the power assembly pushes to make the footrest extend first. At this time, the cushion remains stationary due to the pressure of the human body's gravity. After the footrest extension is completed, the thrust of the power assembly 4 will cause the cushion to also move forward. This adjustment method makes it so that after the human body gets used to having the feet lifted, the buttocks start to move, which does not seem abrupt and also makes the entire adjustment process very gentle. The movement of the cushion relative to the chair frame base makes the lower half of the entire chair frame not vibrate during the entire adjustment process, making the entire chair frame more durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first overall schematic diagram of the sofa chair frame;

[0026] Figure 2 It is a second overall schematic diagram of the sofa chair frame;

[0027] Figure 3 It is an exploded schematic diagram of the sofa chair frame;

[0028] Figure 4 It is a top view of the sofa chair frame;

[0029] Figure 5 It is a contraction diagram of the first embodiment;

[0030] Figure 6 It is an expansion diagram of the first embodiment;

[0031] Figure 7 It is a contraction diagram of the second embodiment;

[0032] Figure 8 It is an expansion diagram of the second embodiment;

[0033] Figure 9 It is a schematic diagram of the movable frame body;

[0034] Figure 10 It is an exploded view of the movable frame body;

[0035] Figure 11 It is a schematic diagram of another structural form of the sofa chair frame.

[0036] In the figure: 1. Moving frame; 101. Telescopic base; 1011. Fixed hole; 1012. Base rotation hole; 102. Rotating base rod; 1021. Base connection hole; 1022. Rotation hole; 1023. Backrest connection hole; 1024. Rotating sliding block; 104. Backrest assembly; 1041. First backrest connecting piece; 10411. Backrest sliding hole; 10412. First backrest rotation hole; 10413. Second backrest rotation hole; 1042. Second backrest connecting piece; 10421. Third backrest rotation hole; 10422. Fourth backrest rotation hole; 10423. Fifth backrest rotation hole; 1043. Third backrest connecting piece; 1044. Fourth backrest connecting piece; 10441. Sixth backrest rotation hole; 10442. Seventh backrest rotation hole; 10443. Eighth backrest rotation hole; 105. Seat cushion mounting rod; 1051. Sliding connection surface; 10511. Backrest assembly connection hole; 10512. First sliding hole; 10513. Second sliding hole; 10514. Expansion rod rotation hole; 10515. First expansion connection hole; 10516. Second expansion connection hole; 10517. Spring seat mounting hole; 1052. Seat cushion mounting surface; 106. Footrest assembly; 1061. First expansion rod; 10611. First expansion rod rotation hole; 1062. Second expansion rod; 1063. Third expansion rod; 1064. Fourth expansion rod; 1065. Fifth expansion rod; 1066. Sixth expansion rod; 1067. First footrest support rod; 10671. First footrest support surface; 1068. Central axis connection block; 10681. Central axis connection surface; 1069. Second footrest support rod; 10691. Second footrest support surface; 10610. Seventh expansion rod; 107. First spring connection nail; 108. Second spring connection nail; 109. Tension spring; 1010. Reinforcing rod; 2. Chair frame base; 201. Base side frame; 2011. First sliding track; 2012. Second sliding track; 2013. Third sliding track; 2014. Rotating sliding groove; 202. First base connecting rod; 203. Second base connecting rod; 204. Third base connecting rod; 205. Guide groove; 3. Central axis; 4. Power assembly. Detailed implementation manners

[0037] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not intended to limit the present invention.

[0038] As Figures 1 to 6 、 Figure 9 、 Figure 10As shown, in the first embodiment, the integrated sofa sliding and stretching functional frame includes a chair frame base 2 and a moving frame body 1. The moving frame body 1 includes a seat cushion mounting rod 105, a footrest assembly 106, and a backrest assembly 104. The seat cushion mounting rod 105 is hinged to the footrest assembly 106. The moving frame body 1 is slidably assembled on the chair frame base 2. The moving frame body 1 slides relative to the chair frame base 2 to form an extended or contracted state. The seat cushion of the sofa chair can slide relative to the chair frame base 2. One end of the seat cushion mounting rod 105 is connected to the footrest assembly 106, and the other end is connected to the backrest assembly 104. The footrest assembly 106 and the seat cushion mounting rod 105 are also connected by a tension spring 109. When the footrest needs to be extended, the power assembly pushes to make the footrest assembly 106 extend first. At this time, the seat cushion remains stationary due to the pressure of the human body's gravity, and the tension spring 109 is stretched. After the footrest assembly 106 is fully extended, the thrust of the power assembly 4 will cause the seat cushion to also move forward. When the seat cushion moves out, the backrest assembly 104 will also be flattened, forming the first semi-reclined sitting position. This adjustment method makes it so that after the feet are lifted, the hips start to move, which does not seem abrupt and makes the entire adjustment process very gentle. When the moving frame body 1 contracts, the power assembly 4 also makes the footrest assembly 106 retract first, and then slowly moves the seat cushion back to its original position. When the seat cushion moves back, the backrest assembly 104 will also be straightened, forming the second sitting position. The movement of the seat cushion relative to the chair frame base 2 makes the lower half of the entire chair frame not vibrate during the entire adjustment process, making the entire chair frame more durable.

[0039] On both sides above the chair frame base 2, there are moving frame bodies 1. The moving frame bodies 1 on both sides above the chair frame base 2 are connected by a central axis 3. The chair frame base 2 is connected to a power assembly 4. The push rod of the power assembly 4 is connected to the central axis 3. When the central axis 3 is pushed by the power assembly 4 in the direction of the footrest assembly 106, it will drive the footrest assembly 106 to unfold. When the central axis 3 is pushed by the power assembly 4 in the direction of the footrest assembly 106, it will drive the backrest assembly 104 to extend away from the mounting rod 105. A strengthening rod 1010 is connected between the two side mounting rods 105, and the strengthening rod 1010 has the function of enhancing the structure.

[0040] When the central shaft 3 is pulled back by the power component 4 towards the pedal assembly 106, it will drive the pedal assembly 106 to contract. When the central shaft 3 is pulled back by the power component 4 towards the pedal assembly 106, it will drive the backrest assembly 104 to retract towards the mounting rod 105. On both sides of the chair frame base 2, there are base side frame bodies 201. The base side frame bodies 201 on both sides of the chair frame base 2 are connected by a base first connecting rod 202, a base second connecting rod 203, and a base third connecting rod 204. The base side frame bodies 201 are provided with a downward inclined guide groove and an upward inclined guide groove; the moving frame body 1 is slidably connected to the downward inclined guide groove and the upward inclined guide groove. The downward inclined guide groove is the first sliding track 2011, and the upward inclined guide groove includes a second sliding track 2012 and a third sliding track 2013. The slope of the second sliding track 2012 is less than that of the third sliding track 2013. The power component 4 here can be an electric cylinder or a cylinder driving component.

[0041] The seat cushion mounting rod 105 includes a sliding connection surface 1051 and a seat cushion mounting surface 1052. A seat cushion is externally connected above the seat cushion mounting surface 1052. The lower end of the sliding connection surface 1051 includes a backrest assembly connection hole 10511, a first sliding hole 10512, a second sliding hole 10513, and a telescopic rod rotation hole 10514. The backrest assembly connection hole 10511 is slidably connected to the first sliding track 2011, the first sliding hole 10512 is slidably connected to the second sliding track 2012, and the second sliding hole 10513 is slidably connected to the third sliding track 2013. Therefore, when the power component 4 pushes the central shaft 3, the seat cushion can slide relative to the entire chair frame base 2. This method makes the entire adjustment process relatively gentle, and the presence of the chair frame base 2 separates the extension and contraction movements of the moving frame body 1 above it from the entire seat frame below the seat base 2, so that the two do not affect each other and makes the entire chair more stable.

[0042] When the power component 4 pushes the chair frame base 2 away, the backrest assembly connection hole 10511 moves along the first sliding track 2011 in the downhill direction, and the second sliding hole 10513 slides along the third sliding track 2013 in the uphill direction. Then the buttocks of the person sitting on it move downward, and the legs are raised by the outer part of the chair frame base 2. Cooperating with the unfolding of the pedal assembly 106 and the backrest assembly 104 being laid flat backward, the person sitting above forms a lying posture.

[0043] When the power component 4 pulls the chair frame base 2 back, the connection hole 10511 of the backrest component moves upward along the first sliding track 2011 in the uphill direction, and the second sliding hole 10513 slides downward along the third sliding track 2013 in the downhill direction. Then the buttocks of the person sitting on it move upward, and the legs are laid flat by the outer part of the chair frame base 2. In cooperation with the retraction of the footrest component 106 and the straightening forward of the backrest component 104, the person sitting on it forms a sitting posture.

[0044] This linkage method enables the entire sofa chair frame to assist the person sitting on it when changing postures, so it is very convenient to use.

[0045] One end of the side frame 201 of the base is provided with a rotary sliding groove 2014. On the second base link 203, a telescopic base 101 is fixedly connected. The telescopic base 101 includes a fixing hole 1011 and a base rotary hole 1012. The fixing hole 1011 is fixedly inserted into the second base link 203, and the base rotary hole 1012 is rotatably connected to the rotary base rod 102.

[0046] A rotary hole 1022 is provided in the middle of the rotary base rod 102. At both ends of the rotary base rod 102, a base connection hole 1021 and a backrest connection hole 1023 are respectively provided. A rotary sliding block 1024 is rotatably connected to the base connection hole 1021. The rotary sliding block 1024 is slidably connected to the rotary sliding groove 2014, and the backrest connection hole 1023 is rotatably connected to the backrest component 104.

[0047] The backrest assembly 104 includes a first backrest connecting member 1041, a second backrest connecting member 1042, a third backrest connecting member 1043, and a fourth backrest connecting member 1044. The first backrest connecting member 1041, the second backrest connecting member 1042, the third backrest connecting member 1043, and the fourth backrest connecting member 1044 are connected to each other to form a closed loop. The first backrest connecting member 1041 includes a backrest sliding hole 10411, a first backrest rotating hole 10412, and a second backrest rotating hole 10413. The backrest sliding hole 10411 is rotatably connected to the seat cushion mounting rod 105, and the backrest sliding hole 10411 is slidably connected to the chair frame base 2. The first backrest rotating hole 10412 is rotatably connected to the fourth backrest connecting member 1044, and the second backrest rotating hole 10413 is rotatably connected to the second backrest connecting member 1042. The second backrest connecting member 1042 includes a third backrest rotating hole 10421, a fourth backrest rotating hole 10422, and a fifth backrest rotating hole 10423. The third backrest rotating hole 10421 is rotatably connected to the second backrest rotating hole 10413, and the fourth backrest rotating hole 10422 is rotatably connected to one end of the third backrest connecting member 1043. The other end of the third backrest connecting member 1043 is rotatably connected to the fourth backrest connecting member 1044. The fourth backrest connecting member 1044 includes a sixth backrest rotating hole 10441, a seventh backrest rotating hole 10442, and an eighth backrest rotating hole 10443. The seventh backrest rotating hole 10442 is provided in the middle of the fourth backrest connecting member 1044. The sixth backrest rotating hole 10441 and the eighth backrest rotating hole 10443 are respectively provided at both ends of the fourth backrest connecting member 1044. The sixth backrest rotating hole 10441 is rotatably connected to the first backrest rotating hole 10412, and the eighth backrest rotating hole 10443 is externally connected to the backrest. When the seat cushion mounting rod 105 is pushed, the first backrest connecting member 1041 connected to the seat cushion mounting rod 105 will also slide along the first sliding track 2011 like the seat cushion mounting rod 105. During the sliding process of the first backrest connecting member 1041, the fourth backrest connecting member 1044 rotatably connected thereto will also rotate accordingly. However, because the second backrest connecting member 1042 is also connected to the rotating base rod 102, the states of the backrest when the sixth backrest rotating hole 10441 slides to both ends of the first sliding track 2011 are respectively upright and flat.

[0048] The pedal assembly 106 includes a first telescopic rod 1061, a second telescopic rod 1062, a third telescopic rod 1063, a fourth telescopic rod 1064, a fifth telescopic rod 1065, a sixth telescopic rod 1066, and a first pedal support rod 1067 that are alternately rotatably connected together. The seat mounting rod 105 includes a telescopic first connection hole 10515, a telescopic second connection hole 10516, and a spring seat mounting hole 10517. The telescopic first connection hole 10515 is rotatably connected to one end of the third telescopic rod 1063. The first telescopic rod 1061 includes a first telescopic rod rotation hole 10611, and the first telescopic rod rotation hole 10611 is rotatably connected to the telescopic second connection hole 10516. One end of the first telescopic rod 1061 is connected with a first spring connection nail 107, and the spring seat mounting hole 10517 is connected with a second spring connection nail 108. One end of the tension spring 109 is connected with the first spring connection nail 107, and the other end of the tension spring 109 is connected with the second spring connection nail 108. The middle position of the first telescopic rod 1061 is connected with a middle shaft connection block 1068, and the middle shaft connection block 1068 includes a middle shaft connection surface 10681, and the middle shaft connection surface 10681 is connected with the middle shaft 3. One end of the first telescopic rod 1061 is rotatably connected to one end of the second telescopic rod 1062. The middle of the second telescopic rod 1062 is rotatably connected to the third telescopic rod 1063. The other end of the second telescopic rod 1062 is rotatably connected to the fifth telescopic rod 1065. The middle of the fifth telescopic rod 1065 is rotatably connected to the fourth telescopic rod 1064. The other end of the fifth telescopic rod 1065 is rotatably connected to the sixth telescopic rod 1066. The other end of the sixth telescopic rod 1066 is rotatably connected to the first pedal support rod 1067. The other end of the first pedal support rod 1067 is rotatably connected to the fourth telescopic rod 1064. The other end where the fourth telescopic rod 1064 is rotatably connected is rotatably connected to the third telescopic rod 1063. Therefore, a linkage relationship is formed among the first telescopic rod 1061, the second telescopic rod 1062, the third telescopic rod 1063, the fourth telescopic rod 1064, the fifth telescopic rod 1065, the sixth telescopic rod 1066, and the first pedal support rod 1067. When the middle shaft 3 is pushed, the middle shaft 3 drives the first telescopic rod 1061 to swing, and the first telescopic rod 1061 transmits the power to cause the pedal assembly to expand or contract.

[0049] Such as Figures 1 to 4 , Figures 7 to 10As shown, the difference between the second embodiment and the first embodiment is that in the second embodiment, a second footrest support rod 1069 and a seventh telescopic rod 10610 are added. One end of the seventh telescopic rod 10610 is connected to the first footrest support rod 1067, and the other end of the seventh telescopic rod 10610 is connected to the sixth telescopic rod 1066. The connecting rod endpoints on one side of the second footrest support rod 1069 are respectively rotatably connected to the first footrest support rod 1067 and the sixth telescopic rod 1066. The first footrest support rod 1067 includes a first footrest support surface 10671, and the second footrest support rod 1069 includes a second footrest support surface 10691. When the footrest assembly 106 is extended, the first footrest support surface 10671 and the second footrest support surface 10691 are in the same plane. Compared with the first embodiment, the footrest assembly 106 in the second embodiment is longer when extended, so it can support more positions of the feet, making the lying person more comfortable.

[0050] Figure 11 It is a schematic diagram of another structural form of the sofa chair frame. The difference between this structure and Figures 1 to 10 the structure described is only that a guide groove 205 is provided on the side frame 201 of the base (that is, the first sliding track 2011, the second sliding track 2012, and the third sliding track 2013 in the above structure are completely connected). The moving frame 1 is slidably connected to the guide groove 205, which simplifies the structure and is beneficial to reducing the installation difficulty.

[0051] The traditional structural method is to first make a wooden frame and then fixedly connect the sofa frame (accessories such as the chair frame base and the backrest assembly) to the wooden frame for use. However, this method will make the structure bulky and the manufacturing cost high. Currently, there is no need to use a wooden frame, and it is made into an integrated machine frame with a linkage function. The structure is light and the cost is low. The seat cushion and the backrest can be directly installed on the corresponding chair frame base and backrest assembly, realizing modular assembly production of the sofa, saving labor and having high production efficiency. Moreover, the connection between the chair frame base and the moving frame is compact, and the two move in a linkage manner, being stable and not shaking when opened.

[0052] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Integrated sofa sliding and stretching function rack, characterized in that, It includes a chair frame base (2) and a movable frame body (1), and the movable frame body (1) includes a seat cushion mounting rod (105), a footrest assembly (106), and a backrest assembly (104); The seat cushion mounting rod (105) is hinged to the footrest assembly (106); The movable frame body (1) is slidably assembled on the chair frame base (2); The movable frame body (1) slides relative to the chair frame base (2) to form an extended or contracted state; On both sides of the chair frame base (2), there are base side frame bodies (201), and the base side frame bodies (201) on both sides of the chair frame base (2) are connected by a base first connecting rod (202), a base second connecting rod (203), and a base third connecting rod (204); A guide groove (205) is provided on the base side frame body (201), and the movable frame body (1) is slidably connected to the guide groove (205); Or, a downward inclined guide groove and an upward inclined guide groove are provided on the base side frame body (201); the movable frame body (1) is slidably connected to the downward inclined guide groove and the upward inclined guide groove; The downward inclined guide groove is a first sliding track (2011), and the upward inclined guide groove includes a second sliding track (2012) and a third sliding track (2013), and the slope of the second sliding track (2012) is less than that of the third sliding track (2013); Movable frame bodies (1) are provided on both upper sides of the chair frame base (2), and the movable frame bodies (1) on both upper sides of the chair frame base (2) are connected by a central shaft (3). The chair frame base (2) is connected with a power assembly (4), and the push rod of the power assembly (4) is connected to the central shaft (3). When the central shaft (3) is pushed by the power assembly (4) towards the direction of the footrest assembly (106), it will drive the footrest assembly (106) to unfold. When the central shaft (3) is pushed by the power assembly (4) towards the direction of the footrest assembly (106), it will drive the backrest assembly (104) to extend away from the mounting rod (105); A strengthening rod (1010) is connected between the two mounting rods (105); When the central shaft (3) is pulled back by the power assembly (4) towards the direction of the footrest assembly (106), it will drive the footrest assembly (106) to contract. When the central shaft (3) is pulled back by the power assembly (4) towards the direction of the footrest assembly (106), it will drive the backrest assembly (104) to retract towards the mounting rod (105); The seat cushion mounting rod (105) includes a sliding connection surface (1051) and a seat cushion mounting surface (1052). A seat cushion is externally connected above the seat cushion mounting surface (1052). The lower end of the sliding connection surface (1051) includes a backrest assembly connection hole (10511), a first sliding hole (10512), a second sliding hole (10513), and a telescopic rod rotation hole (10514). The backrest assembly connection hole (10511) is slidably connected to the first sliding track (2011), the first sliding hole (10512) is slidably connected to the second sliding track (2012), and the second sliding hole (10513) is slidably connected to the third sliding track (2013).

2. The integrated sofa sliding and stretching function rack according to claim 1, characterized in that One end of the side frame (201) of the base is provided with a rotary sliding groove (2014). A telescopic base (101) is fixedly connected to the second base link (203). The telescopic base (101) includes a fixing hole (1011) and a base rotation hole (1012). The fixing hole (1011) is fixedly inserted into the second base link (203), and the base rotation hole (1012) is rotatably connected to the rotary base rod (102).

3. The integrated sofa sliding and stretching functional frame according to claim 2, characterized in that, A rotation hole (1022) is provided in the middle of the rotary base rod (102). Base connection holes (1021) and backrest connection holes (1023) are respectively provided at both ends of the rotary base rod (102). A rotary sliding block (1024) is rotatably connected to the base connection hole (1021). The rotary sliding block (1024) is slidably connected to the rotary sliding groove (2014), and the backrest connection hole (1023) is rotatably connected to the backrest assembly (104).

4. The integrated sofa sliding and stretching function frame according to any one of claims 1 to 3, characterized in that, The backrest assembly (104) includes a first backrest connecting member (1041), a second backrest connecting member (1042), a third backrest connecting member (1043), and a fourth backrest connecting member (1044). The first backrest connecting member (1041), the second backrest connecting member (1042), the third backrest connecting member (1043), and the fourth backrest connecting member (1044) are connected to each other to form a closed loop.

5. The integrated sofa sliding and stretching function rack according to any one of claims 1 to 3, characterized in that The footrest assembly (106) includes a first telescopic rod (1061), a second telescopic rod (1062), a third telescopic rod (1063), a fourth telescopic rod (1064), a fifth telescopic rod (1065), a sixth telescopic rod (1066), and a first footrest support rod (1067) that are alternately rotatably connected to each other.

6. The integrated sofa sliding and stretching functional frame according to claim 5, wherein The seat cushion mounting rod (105) includes a telescopic first connection hole (10515), a telescopic second connection hole (10516), and a spring seat mounting hole (10517). The telescopic first connection hole (10515) is rotatably connected to one end of the third telescopic rod (1063). The first telescopic rod (1061) includes a first telescopic rod rotation hole (10611), and the first telescopic rod rotation hole (10611) is rotatably connected to the telescopic second connection hole (10516). One end of the first telescopic rod (1061) is connected with a first spring connection nail (107), and the spring seat mounting hole (10517) is connected with a second spring connection nail (108). One end of the tension spring (109) is connected with the first spring connection nail (107), and the other end of the tension spring (109) is connected with the second spring connection nail (108). The middle position of the first telescopic rod (1061) is connected with a central axis connection block (1068). The central axis connection block (1068) includes a central axis connection surface (10681), and the central axis connection surface (10681) is connected with the central axis (3).

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