Handrail floor type simple iron stand

Abstract

The invention discloses a simple landing iron stand with handrails. The simple handrail landing iron stand comprises a base, the base comprises a rear connecting rod, side mounting plates connected with sofa handrails are arranged at the two ends of the rear connecting rod, stretching assemblies are arranged on the inner sides of the side mounting plates, the rear connecting rod is provided with a driving mechanism, and the driving mechanism drives the stretching assemblies to be switched among a sitting posture, a TV posture and a lying posture. The problem of high production cost in the prior art is solved.

Description

Technical Field

[0001] The invention relates to the field of home furnishing manufacturing, and in particular to a simple iron frame with a handrail on the ground. Background Art

[0002] The existing Chinese utility model patent with publication number CN221129375U and titled "A Light Electric-Driven Sofa Mechanical Extension Device". The disclosed light electric-driven sofa mechanical extension device includes a base, with symmetrical extension components arranged on the left and right sides of the base. The base includes two symmetrical outer mounting plates, a front bottom bar and a rear bottom bar are welded between the two outer mounting plates, and inner mounting plates for installing the extension components are fixed on both sides of the top of the front and rear bottom bars. Among them, the function of the outer mounting plate is to install the extension component on the sofa seat. However, the outer mounting plate uses a lot of materials, resulting in high production costs. Summary of the invention

[0003] In view of the deficiencies in the prior art, an object of the present invention is to provide a simple floor-standing iron frame for handrails which can reduce production costs.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the simple iron frame for handrails on the ground of the present invention is:

[0005] A simple iron frame with an armrest on the ground comprises a base, wherein the base comprises a rear connecting rod, both ends of the rear connecting rod are provided with side mounting plates connected with the sofa armrests, the inner sides of the side mounting plates are provided with an extension component, and the rear connecting rod is provided with a driving mechanism, which drives the extension component to switch between a sitting position, a TV position and a lying position.

[0006] Preferably, the driving mechanism includes a push rod motor hinged to the rear connecting rod, the telescopic rod of the push rod motor is hinged to the driving rod, and driving connecting rod 1 is arranged at both ends of the driving rod. One end of driving connecting rod 1 is pivotally connected to the side mounting plate, and the other end is pivotally connected to driving connecting rod 2 connected to the extension component.

[0007] Preferably, a first limiting pin is provided on a side of the driving link 1 adjacent to the driving link 2, and the driving link 2 is provided with a first limiting surface cooperating with the first limiting pin.

[0008] Preferably, the extension component includes a leg mechanism, a seat mechanism and a backrest mechanism, the seat mechanism includes a seat frame mounting plate located above the side mounting plate, a driving link rod three is pivotally connected to the front side of the seat frame mounting plate, a rear side of the seat frame mounting plate is pivotally connected to a rear support rod, the top of the rear support rod is pivotally connected to the seat frame mounting plate, the middle part of the rear support rod is pivotally connected to a limiting rod, the rear end of the limiting rod is pivotally connected to the rear support rod, a sliding groove is provided at the front end of the limiting rod, a pin shaft inserted into the sliding groove is provided on the front side of the side mounting plate, a lifting rod is pivotally connected to the middle part of the limiting rod, the front end of the lifting rod is pivotally connected to the driving link rod three, the rear end of the lifting rod is pivotally connected to the rear side of the side mounting plate, the leg mechanism includes a leg link rod one and a leg link rod two pivotally connected to the front side of the seat frame mounting plate, the rear end of the leg link rod one is pivotally connected to the front side of the seat frame mounting plate The front end is pivotally connected to a leg link three, the rear end of the leg link two is pivotally connected to the front side of the seat frame mounting plate, the middle and rear side of the leg link two is pivotally connected to the front end of the lifting rod, the middle and front side of the leg link two is pivotally connected to the top end of the driving link two, the front end of the leg link two is pivotally connected to a leg link four, the middle part of the leg link four is pivotally connected to the leg link one, the front end of the leg link four is pivotally connected to a leg link five, the middle part of the leg link five is pivotally connected to the middle part of the leg link three, the front end of the leg link five is pivotally connected to a leg link six, the front ends of the leg link six and the leg link three are pivotally connected to a footrest at the same time, the backrest mechanism includes a backrest mounting plate pivotally connected to the rear end of the seat frame mounting plate, the backrest mounting plate is pivotally connected to a backrest support rod, the top end of the backrest support rod is pivotally connected to the backrest mounting plate, and the bottom end of the backrest support rod is pivotally connected to the rear end of the side mounting plate.

[0009] Preferably, the inner side of the side mounting plate is provided with a second limit pin, a third limit pin and a fourth limit pin in sequence from back to front, the rear support rod is provided with a second limit surface cooperating with the second limit pin, the limit rod is provided with a third limit surface cooperating with the third limit pin, and the lifting rod is provided with a fourth limit surface cooperating with the fourth limit pin.

[0010] Preferably, a fifth limiting pin is provided on the rear side of the seat frame mounting plate, and the rear support rod is provided with a fifth limiting surface cooperating with the fifth limiting pin.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The extension component is installed on the inner side of the side mounting plate, so that the side mounting plate can be directly connected to the sofa armrest, eliminating the outer mounting plate, thereby reducing production costs and making the entire iron frame lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of a simple iron frame for handrails on the ground according to the present invention.

[0014] Figure 2 It is a structural schematic diagram of a base of the present invention.

[0015] Figure 3 It is a schematic diagram of the inner side surface of the extension component of the present invention in a sitting state.

[0016] Figure 4 It is a schematic diagram of the outer side surface of the extension component of the present invention in a sitting state.

[0017] Figure 5 It is a schematic diagram of the inner side surface of the extension component of the present invention in the TV posture state.

[0018] Figure 6 It is a schematic diagram of the outer side surface of the extension component of the present invention in the TV posture state.

[0019] Figure 7 It is a schematic diagram of the inner side of the extension component of the present invention in a lying state.

[0020] Figure 8 It is a schematic diagram of the outer side of the extension component of the present invention in a lying state.

[0021] Fig. 9 It is a structural schematic diagram of the driving mechanism of the present invention.

[0022] Among them, 1 base, 11 rear connecting rod, 12 first bending part, 13 side mounting plate, 131 second limit pin, 132 third limit pin, 133 fourth limit pin, 2 extension assembly, 21 leg mechanism, 211 leg connecting rod 1, 212 leg connecting rod 2, 213 leg connecting rod 3, 214 leg connecting rod 4, 215 leg connecting rod 5, 216 leg connecting rod 6, 217 footrest, 22 seat mechanism, 221 seat frame mounting plate, 2211 fifth limit pin , 222 rear support rod, 2221 second limiting surface, 2222 fifth limiting surface, 223 limiting rod, 2231 slide groove, 2232 third limiting surface, 224 lifting rod, 2241 fourth limiting surface, 23 backrest mechanism, 231 backrest mounting plate, 232 backrest support rod, 3 driving mechanism, 31 push rod motor, 32 driving rod, 33 second bending part, 34 driving connecting rod 1, 341 first limiting pin, 35 driving connecting rod 2, 351 first limiting surface. DETAILED DESCRIPTION

[0023] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0024] like Figure 1-9As shown, a simple iron frame with armrests on the ground comprises a base 1, the base comprises a rear connecting rod 11, both ends of the rear connecting rod are fixedly connected to a side mounting plate connected to a sofa armrest through a first bending piece 12, an extension assembly 2 is installed on the inner side of the side mounting plate, a driving mechanism 3 is installed on the rear connecting rod, the driving mechanism drives the extension assembly to switch between a sitting position, a TV position and a lying position, the driving mechanism comprises a push rod motor 31 hinged to the rear connecting rod, a telescopic rod of the push rod motor is hinged to a driving rod 32, both ends of the driving rod are fixedly connected to a driving link 1 34 through a second bending piece 33, a rear end of the driving link 1 is pivotally connected to the side mounting plate, a front end of the driving link 1 is pivotally connected to a driving link 2 35 connected to the extension assembly, and a first limit pin 341 is installed on one side of the driving link 1 next to the driving link 2 , the driving connecting rod 2 is provided with a first limiting surface 351 which cooperates with the first limiting pin, the extension component includes a leg mechanism 21, a seat mechanism 22 and a backrest mechanism 23, the seat mechanism includes a seat frame mounting plate 221 located above the side mounting plate, the driving connecting rod 3 is pivotally connected to the front side of the seat frame mounting plate, the rear side of the seat frame mounting plate is pivotally connected to the rear support rod 222, the top end of the rear support rod is pivotally connected to the seat frame mounting plate, the middle part of the rear support rod is pivotally connected to the limiting rod 223, the rear end of the limiting rod is pivotally connected to the rear support rod, the front end of the limiting rod is provided with a sliding groove 2231, the front side of the side mounting plate is provided with a pin shaft inserted into the sliding groove, the middle part of the limiting rod is pivotally connected to the lifting rod 224, the front end of the lifting rod is pivotally connected to the driving connecting rod 3, and the rear end of the lifting rod is pivotally connected to the rear side of the side mounting plate, the leg mechanism includes The leg connecting rod 1 211 and the leg connecting rod 2 212 are pivotally connected to the front side of the seat frame mounting plate, the rear end of the leg connecting rod 1 is pivotally connected to the front side of the seat frame mounting plate, the front end of the leg connecting rod 1 is pivotally connected to the leg connecting rod 3 213, the rear end of the leg connecting rod 2 is pivotally connected to the front side of the seat frame mounting plate, the middle rear side of the leg connecting rod 2 is pivotally connected to the front end of the lifting rod, the middle front side of the leg connecting rod 2 is pivotally connected to the top end of the driving connecting rod 2, the front end of the leg connecting rod 2 is pivotally connected to the leg connecting rod 4 214, the middle part of the leg connecting rod 4 is pivotally connected to the leg connecting rod 1, the front end of the leg connecting rod 4 is pivotally connected to the leg connecting rod 5 215, the middle part of the leg connecting rod 5 is pivotally connected to the middle part of the leg connecting rod 3, the front end of the leg connecting rod 5 is pivotally connected to the leg connecting rod 6 216, and the front ends of the leg connecting rod 6 and the leg connecting rod 3 are simultaneously pivotally connected to the footrest Plate 217, the backrest mechanism includes a backrest mounting plate 231 pivotally connected to the rear end of the seat frame mounting plate, the backrest mounting plate is pivotally connected to a backrest support rod 232, the top end of the backrest support rod is pivotally connected to the backrest mounting plate, the bottom end of the backrest support rod is pivotally connected to the rear end of the side mounting plate, the inner side of the side mounting plate is sequentially provided with a second limit pin 131, a third limit pin 132 and a fourth limit pin 133 from back to front, the rear support rod is provided with a second limit surface 2221 cooperating with the second limit pin, the limit rod is provided with a third limit surface 2232 cooperating with the third limit pin, the lifting rod is provided with a fourth limit surface 2241 cooperating with the fourth limit pin, the fifth limit pin 2211 is installed on the rear side of the seat frame mounting plate, and the rear support rod is provided with a fifth limit surface 2222 cooperating with the fifth limit pin.

[0025] The specific working process and principle of the present invention:

[0026] When in a sitting position, the extension assembly is in a folded state, and the first limit pin abuts against the first limit surface, preventing the second drive link from rotating inward, and the second drive link tightens the leg mechanism to ensure that the leg mechanism is in a tightened state. The second limit pin abuts against the upper side of the second limit surface, preventing the rear support rod and one side of the seat frame mounting plate from rotating downward, the third limit pin abuts against the third limit surface, preventing the limit rod from rotating downward, and the fourth limit pin abuts against the fourth limit surface, preventing the front side of the lifting rod from rotating downward. The second, third and fourth limit pins are all set to improve the stability of the seat frame mounting plate and prevent the seat frame mounting plate from sinking in a sitting position. When the seat frame mounting plate sinks, the second limit pin abuts against the bottom of the lifting rod, which can prevent the seat frame mounting plate from further sinking.

[0027] When the sitting posture is switched to the TV posture, the push rod motor is started, the telescopic rod of the push rod motor is extended, and the driving rod drives the driving link 1 to rotate counterclockwise around the pivot axis between it and the side mounting plate, and the driving link 2 rotates with the driving link 1 while the leg mechanism unfolds. After the leg mechanism is unfolded, the driving link 2 provides supporting force for the leg mechanism to ensure the stability of the leg mechanism after unfolding. While the leg mechanism is unfolding, the leg link 2 will drive the seat frame mounting plate, and the seat frame mounting plate will tilt backward while driving the rear support rod to rotate, and the second limit surface will disengage from the second limit pin until the fifth limit surface hits the fifth limit pin, thereby preventing the rear support rod from rotating and ensuring the stability of the seat frame mounting plate.

[0028] When the TV posture is switched to the lying posture, the push rod motor is started again, the telescopic rod of the push rod motor continues to extend, and the driving connecting rod 1 rotates counterclockwise to the limit position, and the driving connecting rod 2 drives the seat frame mounting plate and the lifting rod to tilt upward through the leg connecting rod 2, the third limit surface disengages from the third limit pin, the fourth limit surface disengages from the fourth limit pin, and the seat frame mounting plate drives the limit rod through the rear support rod, the rear end of the limit rod is lifted, and the backrest mounting plate rotates backward until the lower side of the second limit surface conflicts with the second limit pin, thereby preventing the rear support rod from rotating, thereby ensuring the stability of the seat frame mounting plate.

[0029] The present invention simplifies the base structure and installs the extension assembly on the inner side of the side mounting plate, thereby eliminating the external mounting plate in the prior art, reducing production costs, and also making the entire iron frame lighter. In addition, through the optimization of the driving mechanism, the driving connecting rod 2 provides a tensioning force when the leg mechanism contracts to prevent the leg mechanism from loosening. When the leg mechanism is unfolded, it is directly supported on the middle part of the leg connecting rod 2 to provide a more stable supporting force for the leg mechanism, ensuring the stability of the leg mechanism when it is unfolded; through the setting of the second limit pin, the seat frame mounting plate is prevented from sinking when sitting, and the rear support rod can be prevented from rotating when lying, thereby improving the stability of the seat frame mounting plate.

Claims

1. A simple iron frame for handrails, comprising a base, characterized in that: The base comprises a rear connecting rod, both ends of which are provided with side mounting plates connected to the sofa armrests, an extension component is arranged on the inner side of the side mounting plates, and the rear connecting rod is provided with a driving mechanism, which drives the extension component to switch between a sitting position, a TV position and a lying position.

2. The simple iron frame for handrails according to claim 1, characterized in that: The driving mechanism includes a push rod motor hinged to the rear connecting rod, the telescopic rod of the push rod motor is hinged to the driving rod, and driving connecting rod 1 is arranged at both ends of the driving rod. One end of the driving connecting rod 1 is pivotally connected to the side mounting plate, and the other end is pivotally connected to the driving connecting rod 2 connected to the extension component.

3. The simple iron frame for handrails according to claim 2 is characterized in that: A first limiting pin is arranged on one side of the driving connecting rod 1 adjacent to the driving connecting rod 2, and the driving connecting rod 2 is provided with a first limiting surface matched with the first limiting pin.

4. The simple iron frame for handrails according to claim 2 is characterized in that: The extension component includes a leg mechanism, a seat mechanism and a backrest mechanism. The seat mechanism includes a seat frame mounting plate located above the side mounting plate, a driving link rod three is pivotally connected to the front side of the seat frame mounting plate, a rear side of the seat frame mounting plate is pivotally connected to a rear support rod, the top of the rear support rod is pivotally connected to the seat frame mounting plate, the middle part of the rear support rod is pivotally connected to a limiting rod, the rear end of the limiting rod is pivotally connected to the rear support rod, a sliding groove is provided at the front end of the limiting rod, a pin shaft inserted into the sliding groove is provided on the front side of the side mounting plate, a lifting rod is pivotally connected to the middle part of the limiting rod, the front end of the lifting rod is pivotally connected to the driving link rod three, the rear end of the lifting rod is pivotally connected to the rear side of the side mounting plate, the leg mechanism includes a leg link rod one and a leg link rod two pivotally connected to the front side of the seat frame mounting plate, the rear end of the leg link rod one is pivotally connected to the front side of the seat frame mounting plate, and the front end of the leg link rod one The leg connecting rod 3 is pivotally connected, the rear end of the leg connecting rod 2 is pivotally connected to the front side of the seat frame mounting plate, the middle and rear side of the leg connecting rod 2 is pivotally connected to the front end of the lifting rod, the middle and front side of the leg connecting rod 2 is pivotally connected to the top end of the driving connecting rod 2, the front end of the leg connecting rod 2 is pivotally connected to the leg connecting rod 4, the middle part of the leg connecting rod 4 is pivotally connected to the leg connecting rod 1, the front end of the leg connecting rod 4 is pivotally connected to the leg connecting rod 5, the middle part of the leg connecting rod 5 is pivotally connected to the middle part of the leg connecting rod 3, the front end of the leg connecting rod 5 is pivotally connected to the leg connecting rod 6, the front ends of the leg connecting rod 6 and the leg connecting rod 3 are pivotally connected to the footrest at the same time, the backrest mechanism includes a backrest mounting plate pivotally connected to the rear end of the seat frame mounting plate, the backrest mounting plate is pivotally connected to a backrest support rod, the top end of the backrest support rod is pivotally connected to the backrest mounting plate, and the bottom end of the backrest support rod is pivotally connected to the rear end of the side mounting plate.

5. The simple iron frame for handrails according to claim 4 is characterized in that: The inner side of the side mounting plate is provided with a second limit pin, a third limit pin and a fourth limit pin in sequence from back to front, the rear support rod is provided with a second limit surface cooperating with the second limit pin, the limit rod is provided with a third limit surface cooperating with the third limit pin, and the lifting rod is provided with a fourth limit surface cooperating with the fourth limit pin.

6. The simple iron frame for handrails according to claim 5 is characterized in that: A fifth limiting pin is arranged on the rear side of the seat frame mounting plate, and a fifth limiting surface cooperating with the fifth limiting pin is formed on the rear support rod.

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