Anti-scraping leg mechanism with high foot lifting function and functional iron stand

Abstract

The utility model discloses an anti-scraping leg mechanism with a high foot lifting function and a functional iron stand. The anti-scraping leg mechanism comprises a first leg connecting rod and a second leg connecting rod, the front end of the first leg connecting rod is in pivot joint with a third leg connecting rod, the rear portion of the third leg connecting rod is in pivot joint with the front portion of the second leg connecting rod, the front end of the second leg connecting rod is in pivot joint with a fourth leg connecting rod through a first shaft, and the front side of the fourth leg connecting rod is in pivot joint with a first footrest assembly part through a second shaft. The front end of the fourth leg connecting rod is in pivot joint with a second foot rest assembly part through a third shaft, the middle of the second foot rest assembly part is in pivot joint with a first foot rest connecting rod, the front end of the first foot rest connecting rod is in pivot joint with the second foot rest assembly part, and the rear end of the first foot rest connecting rod is in pivot joint with the first foot rest assembly part. The vertical distance H1 from the axis of the second shaft to the mounting surface of the footrest assembly part I is 120-140 mm, and the minimum distance H2 between the axis of the second shaft and the axis of the third shaft is 100-120 mm. The problems that in the prior art, the requirements of some users cannot be met, and the use comfort is poor are solved.

Description

Technical Field

[0001] The utility model relates to the field of home furnishing manufacturing, in particular to a scratch-resistant floor-raising leg mechanism and a functional iron frame. Background Art

[0002] The existing announcement number is CN221931646U, and the Chinese utility model patent named "An Improved High-legged Zero-wall Iron Frame" discloses a leg mechanism including a footrest assembly plate 1, the tail of the footrest assembly plate 1 is pivotally connected to a leg link 1, the tail of the leg link 1 is pivotally connected to a leg link 3, the leg link 3 is pivotally connected to the front side of the seat frame mounting plate, the front end of the driving link is pivotally connected to the tail of the leg link 3, the middle and lower part of the footrest assembly plate 1 is pivotally connected to the leg link 2, the tail of the leg link 2 is pivotally connected to the leg link 4, the middle part of the leg link 4 is pivotally connected to the leg link 1, the tail end of the leg link 4 is pivotally connected to the front side of the seat frame mounting plate, the front part of the leg link 2 is pivotally connected to the footrest assembly plate 2, the middle part of the footrest assembly plate 2 is pivotally connected to the leg link 5, and the other end of the leg link 5 is pivotally connected to the footrest assembly plate 1. The first footrest assembly plate is used to mount the main footrest, while the second footrest assembly plate is used to mount the auxiliary footrest. The auxiliary footrest is an extension of the main footrest to accommodate those with longer legs and improve user comfort. However, when the leg structure is unfolded, the distance between the mounting surfaces of the first and second footrest assembly plates is 80mm, which still does not meet the needs of some users and reduces user comfort. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a scratch-resistant and high-lift leg mechanism that increases the extension distance of the auxiliary footrest and improves the user's comfort.

[0004] To achieve the above objectives, the technical solution adopted by the anti-scratch and high-lift leg mechanism of the present invention is:

[0005] A scratch-resistant, high-lift leg mechanism comprises a leg link 1 and a leg link 2, wherein the front end of the leg link 1 is pivotally connected to the leg link 3, the rear end of the leg link 3 is pivotally connected to the front end of the leg link 2, the front end of the leg link 2 is pivotally connected to the leg link 4 through a first axis, the front side of the leg link 4 is pivotally connected to the footrest assembly 1 through a second axis, the rear side of the footrest assembly 1 is pivotally connected to the leg link 3, and the front end of the leg link 4 is pivotally connected to the footrest assembly 1 through a third axis. Foot assembly part two, the middle part of footrest assembly part two is pivotally connected to footrest connecting rod one, the front end of footrest connecting rod one is pivotally connected to footrest assembly part two, the rear end of footrest connecting rod one is pivotally connected to footrest assembly part one, the vertical distance H1 from the axis of the second axis to the mounting surface of footrest assembly part one is 120-140mm, the minimum distance H2 between the axes of the second and third axes is 100-120mm, and the lowest point of footrest assembly part two during movement is not lower than the axis of the first axis.

[0006] Preferably, the leg connecting rod 3 is provided with a first limiting pin on one side adjacent to the footrest assembly 1, and the footrest assembly 1 is provided with a first limiting surface that cooperates with the first limiting pin.

[0007] Preferably, the leg connecting rod three is provided with a second limiting pin between the leg connecting rods one and two, and the leg connecting rod two is provided with a second limiting surface and a third limiting surface that cooperate with the second limiting pin.

[0008] Preferably, a footrest connecting rod 2 is fixedly connected to the front side of the footrest assembly part 1, and the front end of the footrest connecting rod 2 extends toward the footrest assembly part 2 and is pivotally connected to the rear end of the footrest connecting rod 1.

[0009] In order to achieve the above purpose, the technical solution adopted by the functional iron frame of the utility model is:

[0010] A functional iron frame comprises an assembly side panel, which is connected to a seat frame mounting plate through a seat linkage mechanism. The front side of the seat frame mounting plate is equipped with a scratch-resistant and high-lift leg mechanism, and the rear side of the seat frame mounting plate is provided with a backrest mechanism.

[0011] Preferably, an extension mounting plate is provided at the front end of the seat frame mounting plate, and a distance H3 between the front end face of the extension mounting plate and the front end face of the seat frame mounting plate is 50-90 mm.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. Increasing the extension distance of leg link 4 relative to footrest assembly 1 and increasing the height of the mounting surface of footrest assembly 1 to provide more space for footrest link 1. This allows footrest assembly 2 to be extended further relative to footrest assembly 1 when the leg mechanism is fully extended, thus increasing the extension distance of the auxiliary footrest and improving user comfort.

[0014] 2. After the height of the footrest assembly is increased, the height of the user's feet can also be increased when the user is lying down, allowing the user to enter a zero-gravity state when lying down, further improving comfort;

[0015] 3. Install an extension mounting plate at the front end of the seat frame mounting plate to increase the seat depth, further meet the needs of users with tall height and long legs, and improve comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram of the existing leg mechanism in a fully extended state.

[0017] Figure 2 This is a diagram of the state in which the anti-scratch and high-lift leg mechanism of the utility model is fully deployed.

[0018] Figure 3This is a diagram of the anti-scratch and high-leg leg mechanism of the utility model in a fully retracted state.

[0019] Figure 4 This is a state diagram of the footrest assembly 2 when its lowest point is closest to the ground during its movement.

[0020] Figure 5 It is a structural diagram of the functional iron frame of the utility model.

[0021] Figure 6 yes Figure 5 Enlarged view of point C.

[0022] Among them, 10 anti-scratch, high-lift leg mechanism, 101 leg link one, 102 leg link two, 1021 second limit surface, 1022 third limit surface, 103 leg link three, 1031 second limit pin, 1032 first limit pin, 104 first axis, 105 leg link four, 106 second axis, 107 footrest assembly one, 1071 first limit surface, 108 third axis, 109 footrest assembly two, 110 footrest link one, 111 footrest link two, 112 fourth axis, 20 assembly side panel, 30 seat linkage mechanism, 40 seat frame mounting plate, 401 extension mounting plate, 50 backrest mechanism, 60 push rod motor. DETAILED DESCRIPTION

[0023] The present invention is further illustrated 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, modifications of various equivalent forms of 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 2-4As shown, a scratch-resistant, high-lift leg mechanism 10 includes a leg link 101 and a leg link 2 102. The front end of the leg link 1 is pivotally connected to the leg link 3 103, and the rear part of the leg link 3 is pivotally connected to the front part of the leg link 2. The leg link 3 is located between the leg links 1 and 2 and is installed with a second limiting pin 1031. The leg link 2 is provided with a second limiting surface 1021 and a third limiting surface 1022 that cooperate with the second limiting pin. The front end of the leg link 2 is pivotally connected to the leg link 4 105 through the first axis 104, and the front side of the leg link 4 is pivotally connected to the footrest assembly 1 107 through the second axis 106. The rear side of the footrest assembly 1 is pivotally connected to the leg link 3, and the leg link 3 is installed with the first limiting pin 1032 next to the side of the footrest assembly 1. Accessory one is provided with a first limiting surface 1071 which cooperates with the first limiting pin. The front end of the leg link four is pivotally connected to the footrest assembly part two 109 through the third axis 108. The middle part of the footrest assembly part two is pivotally connected to the footrest link one 110. The front end of the footrest link one is pivotally connected to the footrest assembly part two. The front side of the footrest assembly part one is fixedly connected to the footrest link two 111. The front end of the footrest link two extends toward the footrest assembly part two and is pivotally connected to the rear end of the footrest link one. The footrest link two reduces the manufacturing difficulty of the footrest assembly part one, thereby reducing the production cost. The vertical distance H1 from the axis of the second axis to the mounting surface of the footrest assembly part one is 125 mm, and the minimum distance H2 between the axes of the second and third axes is 108 mm. The lowest point of the footrest assembly part two during movement is not lower than the axis of the first axis.

[0025] The specific working process and principle of the anti-scratch and high-lift leg mechanism of this utility model are as follows:

[0026] When converting from the fully folded state to the fully extended state, the lower ends of the leg links 1 and 2 rotate outward, driving the leg links 3 and 4 to extend outward first obliquely downward and then obliquely upward. The leg link 4 drives the footrest assembly 1 to rotate around the fourth axis 112, and the mounting surface of the footrest assembly 1 tends to be horizontal. The footrest link 2 pulls the footrest assembly 2 to rotate around the third axis through the footrest link 1. Due to the increase in the extended length of the leg link 4 relative to the footrest assembly 1 and the increase in the vertical height of the third axis relative to the first axis, the lowest point of the footrest assembly 2 can be Keep it not lower than the axis of the first axis to avoid scraping the ground, until the second limit pin conflicts with the third limit surface to prevent the leg mechanism from being over-expanded and unable to retract. At this time, the minimum distance H4 between the first and second mounting surfaces of the footrest assembly is 147mm, which is nearly 70mm longer than the existing technology, thereby further meeting the use needs of people with tall height and long legs and improving the comfort of use. At the same time, after the height of the mounting surface of the footrest assembly is increased, the height of the user's feet can also be increased when the user is lying down, allowing the user to enter a zero-gravity state when lying down, further improving comfort.

[0027] When converting from a fully expanded state to a fully collapsed state, the process is the opposite.

[0028] As shown in Figure 5-6, a functional iron frame includes two symmetrical assembly side panels 20, which are connected to the seat frame mounting plate 40 through a seat linkage mechanism 30. An extension mounting plate 401 is installed at the front end of the seat frame mounting plate. The distance H3 between the front end face of the extension mounting plate and the front end face of the seat frame mounting plate is 70 mm. An anti-scratch and high-lift leg mechanism is installed on the front side of the seat frame mounting plate, and a backrest mechanism 50 is installed on the rear side of the seat frame mounting plate. The seat linkage mechanism and the backrest mechanism are prior art (see the patent document with publication number CN221931646U).

[0029] The specific working process and principle of the functional iron frame of this utility model:

[0030] When in a sitting position, the push rod motor 60 is started, and the telescopic rod of the push rod motor extends forward to drive the anti-scratch and high-leg leg mechanisms to fully unfold, entering the TV posture state. The push rod motor is continued to be started to drive the backrest mechanism to fully unfold through the seat frame mounting plate, entering the lying position.

[0031] Because the anti-scratch, high-leg lifting mechanism of the present invention prevents scratching during exercise, the seat height of the functional iron frame can be reduced. With the increased seat depth and lowered seat height, taller users can avoid contact between their calves and the large footrest when sitting on the sofa, thereby improving comfort. Alternatively, while maintaining the same seat height, the space left by the seat frame mounting plate relative to the ground can be used to increase the thickness of the soft cushioning, also enhancing user comfort.

Claims

1. A scratch-resistant, high-lift leg mechanism, comprising a leg link 1 and a leg link 2, wherein the front end of the leg link 1 is pivotally connected to the leg link 3, the rear end of the leg link 3 is pivotally connected to the front end of the leg link 2, the front end of the leg link 2 is pivotally connected to the leg link 4 via a first axis, the front side of the leg link 4 is pivotally connected to the footrest assembly 1 via a second axis, the rear side of the footrest assembly 1 is pivotally connected to the leg link 3, the front end of the leg link 4 is pivotally connected to the footrest assembly 2 via a third axis, the middle part of the footrest assembly 2 is pivotally connected to the footrest link 1, the front end of the footrest link 1 is pivotally connected to the footrest assembly 2, and the rear end of the footrest link 1 is pivotally connected to the footrest assembly 1, characterized in that: The vertical distance H1 from the second axis to the mounting surface of the footrest assembly is 120-140 mm, the minimum distance H2 between the second and third axis is 100-120 mm, and the lowest point of the footrest assembly is not lower than the first axis during movement.

2. The anti-scratch, high-lift leg mechanism according to claim 1, characterized in that: The leg connecting rod 3 is provided with a first limiting pin on one side adjacent to the footrest assembly part 1, and the footrest assembly part 1 is provided with a first limiting surface that cooperates with the first limiting pin.

3. The anti-scratch, high-lift leg mechanism according to claim 2, characterized in that: The leg connecting rod 3 is provided with a second limiting pin between the leg connecting rods 1 and 2, and the leg connecting rod 2 is provided with a second limiting surface and a third limiting surface that cooperate with the second limiting pin.

4. The anti-scratch, high-lift leg mechanism according to claim 1, characterized in that: The front side of the footrest assembly part 1 is fixedly connected with the footrest connecting rod 2, the front end of the footrest connecting rod 2 extends toward the footrest assembly part 2 and is pivotally connected with the rear end of the footrest connecting rod 1.

5. A functional iron frame, comprising two symmetrical assembly side panels, the assembly side panels being connected to a seat frame mounting plate via a seat linkage mechanism, characterized in that: The front side of the seat frame mounting plate is installed with the anti-scratch, high-leg mechanism as described in any one of claims 1 to 4, and the rear side of the seat frame mounting plate is provided with a backrest mechanism.

6. The functional iron frame according to claim 5, characterized in that: An extension mounting plate is provided at the front end of the seat frame mounting plate, and a distance H3 between the front end face of the extension mounting plate and the front end face of the seat frame mounting plate is 50-90 mm.

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