A reclining chair with a reclining assembly preventing the user from leaning back in a lying position

Abstract

This utility model discloses an anti-reclining extension component and a chair using the same component. The anti-reclining extension component includes a leg mechanism, a seat mechanism, and a backrest mechanism. The seat mechanism includes a mounting frame. A front swing member is pivotally connected to the front side of the mounting frame, and a rear swing member is pivotally connected to the rear side of the mounting frame. The top of the front swing member is pivotally connected to the mounting frame, and a side connecting rod is pivotally connected to the bottom end of the front swing member. A front rotating member is pivotally connected to the front part of the side connecting rod, and the front end of the front rotating member is pivotally connected to the side connecting rod. The rear end of the front rotating member has an elongated hole for connecting the backrest mechanism. The backrest mechanism has a shaft that slides within the elongated hole. A seat frame mounting plate is pivotally connected to the middle of the front rotating member, and a second shaft is provided in the middle of the seat frame mounting plate. The front rotating member has an arc-shaped hole for the second shaft to slide through. When the second shaft slides to the bottom of the arc-shaped hole, it prevents the first shaft from sliding to the rear end of the elongated hole. This utility model solves the safety hazards of existing technologies.

Description

Technical Field

[0001] This utility model relates to the field of home furnishing manufacturing, and in particular to an extension component for preventing backward tilting when lying down and a chair using the extension component. Background Technology

[0002] A Chinese invention patent with publication number CN113142861B, entitled "Mechanical Extension Device and Seat Unit for Movable Seat Unit," describes in its specific embodiment that "a pin 44 is provided at the front end of the horizontal section 41 of the backrest support, and an elongated hole 28 is provided at the rear end of the pull rod 25. The pin 44 is movably fitted into the elongated hole 28, thereby allowing the backrest support and the pull rod to pivotally connect with a certain degree of freedom in the longitudinal direction." Specifically, the elongated hole is used to allow the backrest support and the pull rod to pivotally connect with a certain degree of freedom in the longitudinal direction when switching between a sitting posture and a TV posture (relaxation posture). When switching from a TV posture to a reclining posture, it is used to limit the rotation angle of the backrest support. Therefore, the length of the elongated hole affects the rotation angle of the backrest support; that is, increasing the length of the elongated hole increases the rotation angle of the backrest support, and shortening the length of the elongated hole decreases the rotation angle of the backrest support. Currently, the length of the long hole is just enough to meet the movement needs of the seat unit when switching between sitting and TV positions, but it is easy for the seat unit to tip over when entering the reclining position due to the excessive backward tilting angle of the backrest. Therefore, the seat unit has certain safety hazards. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an extension component that can eliminate safety hazards and prevent backward tilting when lying down.

[0004] To achieve the above objectives, the technical solution adopted by the anti-lying backward extension component of this utility model is as follows:

[0005] An extension assembly for preventing backward tilting in a reclining position includes a leg mechanism, a seat mechanism, and a backrest mechanism. The seat mechanism includes a mounting frame, a front swing member pivotally connected to the front side of the mounting frame, a rear swing member pivotally connected to the rear side of the mounting frame, the top of the front swing member pivotally connected to the mounting frame, a side link 1 pivotally connected to the bottom end of the front swing member, a front rotating member pivotally connected to the front part of the side link 1, the front end of the front rotating member pivotally connected to the side link 1, and an elongated hole 1 for connecting the backrest mechanism being provided at the rear end of the front rotating member. The backrest mechanism has a shaft 1 that slides within the elongated hole 1. A seat frame mounting plate is pivotally connected to the middle of the front rotating member, and a shaft 2 is provided in the middle of the seat frame mounting plate. The front rotating member has an arc-shaped hole for the shaft 2 to slide through. When the shaft 2 slides to the bottom of the arc-shaped hole, it prevents the shaft 1 from sliding to the rear end of the elongated hole 1.

[0006] Preferably, the seat mechanism further includes a seat plate limiting member pivotally connected to the side link one. The front end of the seat plate limiting member is pivotally connected to the middle of the side link one, and the rear end of the seat plate limiting member is pivotally connected to a rear rotating member. The front end of the rear rotating member is pivotally connected to the seat plate limiting member, and the rear end of the rear rotating member is pivotally connected to a side link two. The front end of the side link two is connected to the leg mechanism, and the rear end of the side link two is connected to the backrest mechanism.

[0007] Preferably, the backrest mechanism includes a backrest mounting plate, a shaft one mounted on the front end of the backrest mounting plate, the front middle part of the backrest mounting plate pivotally connected to the rear end of the seat frame mounting plate, a backrest connecting rod one and a backrest connecting rod two pivotally connected in the middle of the backrest mounting plate, a backrest connecting rod three pivotally connected to the upper part of the backrest connecting rod one, the top end of the backrest connecting rod three pivotally connected to the backrest connecting rod one, the bottom end of the backrest connecting rod three pivotally connected to the rear end of the side connecting rod one, the lower part of the backrest connecting rod one pivotally connected to the rear end of the side connecting rod two via the shaft three, and the backrest connecting rod two has an elongated hole three for sliding the shaft three.

[0008] Preferably, the leg mechanism includes a large foot plate, on which leg link one and leg link two are pivotally connected. The front end of leg link one is pivotally connected to the foot plate, and the rear end of leg link one is pivotally connected to leg link three. The front end of leg link three is pivotally connected to leg link one, and the rear end of leg link three is pivotally connected to the front side of the seat frame mounting plate. The rear part of leg link three is pivotally connected to the front end of side link two, and the front end of leg link two is pivotally connected to the foot plate. The rear end of leg link two is pivotally connected to leg link four, and the front end of leg link four is pivotally connected to leg link two. The rear end of leg link four is pivotally connected to the front side of the seat frame mounting plate, and the front part of leg link four is pivotally connected to the rear part of leg link one. A small foot plate is provided between leg link one and leg link two, with the bottom end of the small foot plate pivotally connected to leg link two and the middle part of the small foot plate pivotally connected to leg link one.

[0009] To achieve the above objectives, the technical solution adopted by the present invention for a rocking chair with an anti-tilting extension component when reclining is as follows:

[0010] A rocking chair with an extension component that prevents reclining posture includes a base, with the extension component mounted on both sides of the base.

[0011] Preferably, the base includes a base frame, a turntable is provided on the top of the base frame, and a plurality of square tubes for installing extension components are provided on the top of the turntable.

[0012] Compared with the prior art, this utility model has the following advantages:

[0013] Without altering the original features of shaft one and long hole one, that is, ensuring the necessary movement of the extension component when switching between sitting and TV positions, shaft two is added to the seat mounting plate, and an arc-shaped hole is added to the front rotating component. By cooperating with shaft two and the arc-shaped hole, the backward tilting angle of the backrest mechanism is reduced, preventing the chair from tipping over and thus eliminating safety hazards. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the extension component for preventing backward tilting when lying down, which is a utility model.

[0015] Figure 2 This is a front view of the anti-backward tilting extension component of this utility model in a lying position.

[0016] Figure 3 This is a rear view of the anti-lying backward extension component of this utility model in a lying position.

[0017] Figure 4 This is a front view of the TV posture state of the extension component for preventing backward tilting when lying down according to this utility model.

[0018] Figure 5 This is a front view of the anti-lying extension component of this utility model in a sitting position.

[0019] Figure 6 This is a structural diagram of a rocking chair that incorporates an extension component to prevent backward tilting when reclining.

[0020] Figure 7 This is a structural diagram of the base.

[0021] The components include: 1. Extension assembly; 11. Leg mechanism; 111. Footplate; 112. Leg link 1; 113. Leg link 2; 114. Leg link 3; 115. Leg link 4; 116. Small footplate; 12. Seat mechanism; 121. Mounting bracket; 122. Front swing component; 123. Rear swing component; 124. Side link 1; 125. Front rotating component; 1251. Long hole 1; 1252. Arc hole; 126. Seat frame mounting plate; 127. Seat plate limiting component; 128. Rear rotating component; 129. Side link 2; 13. Backrest mechanism; 131. Backrest mounting plate; 132. Backrest link 1; 133. Backrest link 2; 1331. Long hole 3; 134. Backrest link 3; 2. Base; 21. Base frame; 22. Turntable; 23. Square tube. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0023] like Figure 1-5As shown, an extension assembly 1 for preventing backward tilting in a reclining position includes a leg mechanism 11, a seat mechanism 12, and a backrest mechanism 13. The seat mechanism includes a mounting frame 121, with a front swing member 122 pivotally connected to the front side of the mounting frame and a rear swing member 123 pivotally connected to the rear side of the mounting frame. The top of the front swing member is pivotally connected to the mounting frame, and the bottom end of the front swing member is pivotally connected to a side link 124. The front part of the side link 1 is pivotally connected to a front rotating member 125, and the front end of the front rotating member is pivotally connected to the side link 1. The middle part of the front rotating member is pivotally connected to a seat frame mounting plate 126, and the middle part of the side link 1 is pivotally connected to a seat plate limiting member 127. The front end of the seat plate limiting member is pivotally connected to the side link 1. In the middle, the rear end of the seat plate limiting member is pivotally connected to the rear rotating member 128, the front end of the rear rotating member is pivotally connected to the seat plate limiting member, the rear end of the rear rotating member is pivotally connected to the second side link 129, the front end of the second side link is connected to the leg mechanism, the leg mechanism includes a large foot plate 111, the large foot plate is pivotally connected to the first leg link 112 and the second leg link 113, the front end of the first leg link is pivotally connected to the foot plate, the rear end of the first leg link is pivotally connected to the third leg link 114, the front end of the third leg link is pivotally connected to the first leg link, the rear end of the third leg link is pivotally connected to the front side of the seat frame mounting plate, the rear part of the third leg link is pivotally connected to the front end of the second side link, and the front end of the second leg link is connected to the foot plate. The rear end of leg link two is pivotally connected to leg link four 115. The front end of leg link four is pivotally connected to leg link two. The rear end of leg link four is pivotally connected to the front side of the seat frame mounting plate. The front part of leg link four is pivotally connected to the rear part of leg link one. A small foot plate 116 is installed between leg link one and leg link two. The bottom end of the small foot plate is pivotally connected to leg link two. The middle part of the small foot plate is pivotally connected to leg link one. The rear end of side link two is connected to the backrest mechanism. The backrest mechanism includes a backrest mounting plate 131. The front middle part of the backrest mounting plate is pivotally connected to the rear end of the seat frame mounting plate. The middle part of the backrest mounting plate is pivotally connected to backrest link one 132. Backrest link 2 133, backrest link 1 is pivotally connected to backrest link 3 134 at the top, backrest link 3 is pivotally connected to backrest link 1 at the top, backrest link 3 is pivotally connected to the rear end of side link 1 at the bottom, backrest link 1 is pivotally connected to the rear end of side link 2 at the bottom via shaft 3, backrest link 2 is provided with a long hole 3 1331 for sliding shaft 3, shaft 1 is installed at the front end of backrest mounting plate, shaft 1 is provided with a long hole 1251 for sliding shaft 1 at the rear end of front rotating part, shaft 2 is installed in the middle of seat frame mounting plate, front rotating part is provided with an arc-shaped hole 1252 for sliding shaft 2, when shaft 2 slides to the bottom of arc-shaped hole, it prevents shaft 1 from sliding to the rear end of long hole 1.

[0024] The specific working process and principle of the anti-reclining extension component of this utility model are as follows: During the transition from a seated to a reclining position, when the backrest mounting frame flips backward, it drives the front rotating component to rotate around its pivot axis with the seat frame mounting plate. When the second shaft moves relative to the bottom of the arc-shaped hole, it prevents the first shaft from moving relative to the rear end of the first long hole, thus reducing the sliding distance of the first shaft within the first long hole. This reduces the angle at which the backrest mounting frame flips backward, preventing backward tilting. This utility model retains the original feature of the first shaft and the first long hole cooperating, ensuring that the extension component can move as needed when transitioning between a seated and seated position. A second shaft is added to the seat mounting plate, and an arc-shaped hole is added to the front rotating component. Through the cooperation of the second shaft and the arc-shaped hole, the backward tilting angle of the backrest mechanism is reduced, preventing the chair from tipping over and eliminating safety hazards.

[0025] like Figure 6-7 As shown, a rocking chair with an extension component that prevents reclining posture includes a base 2, the base includes a base frame 21, a turntable 22 is mounted on the top of the base frame, two square tubes 23 are mounted on the top of the turntable, the extension component is mounted on both sides of the two square tubes, and the two square tubes and two mounting brackets form a frame structure.

Claims

1. An extension assembly for preventing backward tilting in a reclining position, comprising a leg mechanism, a seat mechanism, and a backrest mechanism, wherein the seat mechanism includes a mounting frame, a front swing member pivotally connected to the front side of the mounting frame, a rear swing member pivotally connected to the rear side of the mounting frame, the top end of the front swing member pivotally connected to the mounting frame, a side connecting rod pivotally connected to the bottom end of the front swing member, a front rotating member pivotally connected to the front part of the side connecting rod, the front end of the front rotating member pivotally connected to the side connecting rod, an elongated hole for connecting the backrest mechanism being provided at the rear end of the front rotating member, the backrest mechanism having a shaft sliding within the elongated hole, and a seat frame mounting plate pivotally connected to the middle part of the front rotating member, characterized in that: A second shaft is provided in the middle of the mounting plate of the seat frame. The front rotating part has an arc-shaped hole for the second shaft to slide. When the second shaft slides to the bottom of the arc-shaped hole, it prevents the first shaft from sliding to the rear end of the long hole.

2. The extension component for preventing backward tilting in a lying position according to claim 1, characterized in that: The seat mechanism also includes a seat plate limiting member pivotally connected to a side link one. The front end of the seat plate limiting member is pivotally connected to the middle of the side link one, and the rear end of the seat plate limiting member is pivotally connected to a rear rotating member. The front end of the rear rotating member is pivotally connected to the seat plate limiting member, and the rear end of the rear rotating member is pivotally connected to a side link two. The front end of the side link two is connected to the leg mechanism, and the rear end of the side link two is connected to the backrest mechanism.

3. The extension component for preventing backward tilting in a lying position according to claim 2, characterized in that: The backrest mechanism includes a backrest mounting plate, a shaft one mounted on the front end of the backrest mounting plate, a front-middle part of the backrest mounting plate pivotally connected to the rear end of the seat frame mounting plate, a backrest connecting rod one and a backrest connecting rod two pivotally connected in the middle of the backrest mounting plate, a backrest connecting rod three pivotally connected to the upper part of the backrest connecting rod one, the top end of the backrest connecting rod three pivotally connected to the backrest connecting rod one, the bottom end of the backrest connecting rod three pivotally connected to the rear end of the side connecting rod one, the lower part of the backrest connecting rod one pivotally connected to the rear end of the side connecting rod two via the shaft three, and the backrest connecting rod two has an elongated hole three for sliding the shaft three.

4. The extension component for preventing backward tilting in a lying position according to claim 2, characterized in that: The leg mechanism includes a large foot plate, to which leg link one and leg link two are pivotally connected. The front end of leg link one is pivotally connected to the foot plate, and the rear end of leg link one is pivotally connected to leg link three. The front end of leg link three is pivotally connected to leg link one, and the rear end of leg link three is pivotally connected to the front side of the seat frame mounting plate. The rear part of leg link three is pivotally connected to the front end of side link two, and the front end of leg link two is pivotally connected to the foot plate. The rear end of leg link two is pivotally connected to leg link four, and the front end of leg link four is pivotally connected to leg link two. The rear end of leg link four is pivotally connected to the front side of the seat frame mounting plate, and the front part of leg link four is pivotally connected to the rear part of leg link one. A small foot plate is provided between leg link one and leg link two. The bottom end of the small foot plate is pivotally connected to leg link two, and the middle part of the small foot plate is pivotally connected to leg link one.

5. A rocking chair employing the extension component as described in any one of claims 1-4, characterized in that: Includes a base, with extension components mounted on both sides of the base.

6. The chair according to claim 5, characterized in that: The base includes a base frame, a turntable is provided on the top of the base frame, and a number of square tubes for installing extension components are provided on the top of the turntable.

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