Handrail floor type simple iron stand

Abstract

The utility model 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 utility model solves the problem of high production cost in the prior art.

Description

Technical Field

[0001] The utility model relates to the field of household manufacturing, in particular to a simple iron frame with armrests landing on the ground. Background Art

[0002] There is a Chinese utility model patent with the publication number of CN221129375U and the name of "A Light Electric Drive Sofa Mechanical Extension Device". The disclosed light electric drive sofa mechanical extension device includes a base. Symmetrical extension components are arranged on the left and right sides of the base. The base includes two symmetrical outer mounting plates. A front bottom rod and a rear bottom rod are welded between the two outer mounting plates. Inner mounting plates for mounting the extension components are fixedly connected to the top sides of the front and rear bottom rods. Among them, the function of the outer mounting plate is to mount the extension component on the sofa seat. However, the outer mounting plate uses more materials, resulting in high production costs. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a simple iron frame with armrests landing on the ground that can reduce production costs.

[0004] To achieve the above purpose, the technical solution adopted by the simple iron frame with armrests landing on the ground of the utility model is as follows:

[0005] A simple iron frame with armrests landing on the ground includes a base. The base includes a rear connecting rod. Side mounting plates for connecting with the sofa armrests are arranged at both ends of the rear connecting rod. An extension component is arranged inside the side mounting plate. A driving mechanism is arranged on the rear connecting rod. The driving mechanism 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. A telescopic rod of the push rod motor is hinged to a driving rod. Driving connecting rods I are arranged at both ends of the driving rod. One end of the driving connecting rod I is pivotally connected to the side mounting plate, and the other end is pivotally connected to a driving connecting rod II connected with the extension component.

[0007] Preferably, a first limit pin is arranged on one side of the driving connecting rod I adjacent to the driving connecting rod II. The driving connecting rod II is provided with a first limit surface cooperating with the first limit pin.

[0008] Preferably, the stretching assembly 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. The driving link three is pivotally connected to the front side of the seat frame mounting plate. A rear support rod is pivotally connected to the rear side of the seat frame mounting plate. The top end of the rear support rod is pivotally connected to the seat frame mounting plate. A limiting rod is pivotally connected to the middle of the rear support rod. The rear end of the limiting rod is pivotally connected to the rear support rod. A chute is provided at the front end of the limiting rod. A pin shaft inserted into the chute is provided on the front side of the side mounting plate. An elevating rod is pivotally connected to the middle of the limiting rod. The front end of the elevating rod is pivotally connected to the driving link three. The rear end of the elevating rod is pivotally connected to the rear side of the side mounting plate. The leg mechanism includes a leg link one and a leg link two pivotally connected to the front side of the seat frame mounting plate. The rear end of the leg link one is pivotally connected to the front side of the seat frame mounting plate. The front end of the leg link one 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 rear side of the leg link two is pivotally connected to the front end of the elevating rod. The middle 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 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 of the leg link five is pivotally connected to the middle 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 simultaneously pivotally connected to a footrest. 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. The bottom end of the backrest support rod is pivotally connected to the rear end of the side mounting plate.

[0009] Preferably, a second limit pin, a third limit pin, and a fourth limit pin are sequentially arranged from back to front on the inner side of the side mounting plate. The rear support rod is provided with a second limit surface that cooperates with the second limit pin. The limiting rod is provided with a third limit surface that cooperates with the third limit pin. The elevating rod is provided with a fourth limit surface that cooperates with the fourth limit pin.

[0010] Preferably, a fifth limit pin is provided on the rear side of the seat frame mounting plate. The rear support rod is provided with a fifth limit surface that cooperates with the fifth limit pin.

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

[0012] The stretching assembly is installed on the inner side of the side mounting plate, enabling the side mounting plate to be directly connected to the sofa armrest, eliminating the outer mounting plate, thereby reducing the production cost and making the entire iron frame lighter. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the simple iron frame with an armrest landing of the present invention.

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

[0015] Figure 3 It is a schematic inner side view of the stretching component of the present utility model in the sitting posture state.

[0016] Figure 4 It is a schematic outer side view of the stretching component of the present utility model in the sitting posture state.

[0017] Figure 5 It is a schematic inner side view of the stretching component of the present utility model in the TV posture state.

[0018] Figure 6 It is a schematic outer side view of the stretching component of the present utility model in the TV posture state.

[0019] Figure 7 It is a schematic inner side view of the stretching component of the present utility model in the lying posture state.

[0020] Figure 8 It is a schematic outer side view of the stretching component of the present utility model in the lying posture state.

[0021] Figure 9 It is a schematic structural view of the driving mechanism of the present utility model.

[0022] Wherein, 1 is the base, 11 is the rear connecting rod, 12 is the first bending member, 13 is the side mounting plate, 131 is the second limit pin, 132 is the third limit pin, 133 is the fourth limit pin, 2 is the stretching component, 21 is the leg mechanism, 211 is the first leg connecting rod, 212 is the second leg connecting rod, 213 is the third leg connecting rod, 214 is the fourth leg connecting rod, 215 is the fifth leg connecting rod, 216 is the sixth leg connecting rod, 217 is the footrest, 22 is the seat mechanism, 221 is the seat frame mounting plate, 2211 is the fifth limit pin, 222 is the rear support rod, 2221 is the second limit surface, 2222 is the fifth limit surface, 223 is the limit rod, 2231 is the chute, 2232 is the third limit surface, 224 is the elevation rod, 2241 is the fourth limit surface, 23 is the backrest mechanism, 231 is the backrest mounting plate, 232 is the backrest support rod, 3 is the driving mechanism, 31 is the push rod motor, 32 is the driving rod, 33 is the second bending member, 34 is the first driving connecting rod, 341 is the first limit pin, 35 is the second driving connecting rod, 351 is the first limit surface. Specific embodiments

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

[0024] As Figures 1-9As shown in the figure, a simple iron frame with an armrest landing includes a base 1. The base includes a rear connecting rod 11. Both ends of the rear connecting rod are fixedly connected to side mounting plates connected to the sofa armrest through first bending members 12. An extension assembly 2 is installed inside the side mounting plates. 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 includes a push rod motor 31 hinged to the rear connecting rod. The 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 first driving link 34 through second bending members 33. The rear end of the first driving link is pivotally connected to the side mounting plate. The front end of the first driving link is pivotally connected to a second driving link 35 connected to the extension assembly. A first limit pin 341 is installed on the side of the first driving link adjacent to the second driving link. The second driving link is provided with a first limit surface 351 that cooperates with the first limit pin. The extension assembly 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. A third driving link 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 a 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 a limit rod 223. The rear end of the limit rod is pivotally connected to the rear support rod. A chute 2231 is provided at the front end of the limit rod. A pin shaft inserted into the chute is installed on the front side of the side mounting plate. The middle part of the limit rod is pivotally connected to a lifting rod 224. The front end of the lifting rod is pivotally connected to the third driving link. The rear end of the lifting rod is pivotally connected to the rear side of the side mounting plate. The leg mechanism includes a first leg link 211 and a second leg link 212 pivotally connected to the front side of the seat frame mounting plate. The rear end of the first leg link is pivotally connected to the front side of the seat frame mounting plate. The front end of the first leg link is pivotally connected to a third leg link 213. The rear end of the second leg link is pivotally connected to the front side of the seat frame mounting plate. The middle and rear side of the second leg link is pivotally connected to the front end of the lifting rod. The middle and front side of the second leg link is pivotally connected to the top end of the second driving link. The front end of the second leg link is pivotally connected to a fourth leg link 214. The middle part of the fourth leg link is pivotally connected to the first leg link. The front end of the fourth leg link is pivotally connected to a fifth leg link 215. The middle part of the fifth leg link is pivotally connected to the middle part of the third leg link. The front end of the fifth leg link is pivotally connected to a sixth leg link 216. The front ends of the sixth leg link and the third leg link are simultaneously pivotally connected to a footrest 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. A second limit pin 131, a third limit pin 132, and a fourth limit pin 133 are sequentially arranged from the rear to the front on the inner side of the side mounting plate. The rear support rod is provided with a second limit surface 2221 that cooperates with the second limit pin. The limit rod is provided with a third limit surface 2232 that cooperates with the third limit pin. The lifting rod is provided with a fourth limit surface 2241 that cooperates with the fourth limit pin. A fifth limit pin 2211 is installed on the rear side of the seat frame mounting plate. The rear support rod is provided with a fifth limit surface 2222 that cooperates with the fifth limit pin.

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

[0026] When in the sitting position, the stretching assembly is in the retracted state. The first limit pin abuts against the first limit surface, preventing the second driving link from rotating inwards, and the second driving link tightens the leg mechanism to ensure that the leg mechanism is in the tightened state. The second limit pin abuts against the upper side of the second limit surface, preventing one side of the rear support rod and the seat frame mounting plate from rotating downwards. The third limit pin abuts against the third limit surface, preventing the limit rod from rotating downwards. The fourth limit pin abuts against the fourth limit surface, preventing the front side of the lifting rod from rotating downwards. The settings of the second, third, and fourth limit pins are all to improve the stability of the seat frame mounting plate and prevent the seat frame mounting plate from sinking in the 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 sinking further.

[0027] When switching from the sitting position to the TV position, the push rod motor is started. The telescopic rod of the push rod motor extends out, and the driving rod drives the first driving link to rotate counterclockwise around its pivot axis with the side mounting plate. While the second driving link rotates with the first driving link, the leg mechanism unfolds. After the leg mechanism unfolds, the second driving link provides a supporting force for the leg mechanism to ensure the stability of the leg mechanism after unfolding. While the leg mechanism unfolds, the second leg link will drive the seat frame mounting plate. When the seat frame mounting plate tilts backwards, it drives the rear support rod to rotate. The second limit surface disengages from the second limit pin until the fifth limit surface abuts against the fifth limit pin, preventing the rear support rod from rotating and ensuring the stability of the seat frame mounting plate.

[0028] When switching from the TV position to the lying position, the push rod motor is started again. The telescopic rod of the push rod motor continues to extend out. The first driving link rotates counterclockwise to the limit position. The second driving link drives the seat frame mounting plate and the lifting rod to tilt upwards through the second leg link. The third limit surface disengages from the third limit pin, and the fourth limit surface disengages from the fourth limit pin. The seat frame mounting plate drives the limit rod through the rear support rod, and the rear end of the limit rod is lifted. The backrest mounting plate rotates backwards until the lower side of the second limit surface abuts against the second limit pin, preventing the rear support rod from rotating and ensuring the stability of the seat frame mounting plate.

[0029] The present utility model simplifies the base structure, installs the stretching assembly inside the side mounting plate, eliminates the outer mounting plate in the prior art, reduces the production cost, and also makes the whole iron frame lighter. In addition, through the optimization of the driving mechanism, the second driving link provides a tightening force when the leg mechanism contracts to prevent the leg mechanism from loosening. When the leg mechanism unfolds, it directly supports the middle of the second leg link, providing a more stable supporting force for the leg mechanism and ensuring the stability of the leg mechanism when it unfolds. Through the setting of the second limit pin, it can prevent the seat frame mounting plate from sinking in the sitting position and prevent the rear support rod from rotating in the lying position, improving the stability of the seat frame mounting plate.

Claims

1. A simple iron frame with an armrest landing, including a base, characterized in that: The base includes a rear connecting rod. Side mounting plates for connecting with the sofa armrests are provided at both ends of the rear connecting rod. An extension assembly is provided inside the side mounting plates. A driving mechanism is provided on the rear connecting rod, and the driving mechanism drives the extension assembly to switch between a sitting position, a TV position, and a lying position.

2. The simple iron stand with handrail landing according to claim 1, characterized in that: The driving mechanism includes a push rod motor hinged to the rear connecting rod. A driving rod is hinged to the telescopic rod of the push rod motor. Driving link one is provided at both ends of the driving rod. One end of the driving link one is pivotally connected to the side mounting plate, and the other end is pivotally connected to a driving link two connected to the extension assembly.

3. The simple iron frame with the handrail landing according to claim 2, characterized in that: A first limit pin is provided on the side of the driving link one adjacent to the driving link two. The driving link two is provided with a first limit surface that cooperates with the first limit pin.

4. The simple iron frame with the handrail landing according to claim 2, wherein: The extension assembly 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 three is pivotally connected to the front side of the seat frame mounting plate. A rear support rod is pivotally connected to the rear side of the seat frame mounting plate. The top end of the rear support rod is pivotally connected to the seat frame mounting plate. A limit rod is pivotally connected to the middle of the rear support rod. The rear end of the limit rod is pivotally connected to the rear support rod. A chute is provided at the front end of the limit rod. A pin shaft inserted into the chute is provided on the front side of the side mounting plate. A lifting rod is pivotally connected to the middle of the limit rod. The front end of the lifting rod is pivotally connected to the driving link 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 one and a leg link two pivotally connected to the front side of the seat frame mounting plate. The rear end of the leg link one is pivotally connected to the front side of the seat frame mounting plate. The front end of the leg link one 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 rear side of the leg link two is pivotally connected to the front end of the lifting rod. The middle 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 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 of the leg link five is pivotally connected to the middle of the leg link three. The front end of the leg link five is pivotally connected to a leg link six. A footrest is pivotally connected to the front ends of both the leg link six and the leg link three at the same time. The backrest mechanism includes a backrest mounting plate pivotally connected to the rear end of the seat frame mounting plate. A backrest support rod is pivotally connected to the backrest mounting plate. 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.

5. The simple iron stand with armrest landing according to claim 4, characterized in that: A second limit pin, a third limit pin, and a fourth limit pin are sequentially provided from back to front on the inner side of the side mounting plate. The rear support rod is provided with a second limit surface that cooperates with the second limit pin. The limit rod is provided with a third limit surface that cooperates with the third limit pin. The lifting rod is provided with a fourth limit surface that cooperates with the fourth limit pin.

6. The simple iron stand with the handrail landing according to claim 5, characterized in that: A fifth limit pin is provided on the rear side of the seat frame mounting plate. The rear support rod is provided with a fifth limit surface that cooperates with the fifth limit pin.

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