Base and sofa using same

Abstract

The base comprises a frame body, supporting legs are arranged on the frame body, first four-bar mechanisms are arranged on the left side and the right side of the front end of the frame body respectively, first idler wheels are arranged below the first four-bar mechanisms, rotating arms and second four-bar mechanisms are arranged on the left side and the right side of the tail end of the frame body respectively, and the first idler wheels are arranged below the second four-bar mechanisms. A second rolling wheel is arranged below the second four-bar mechanism, the rotating arms are located on the rear side of the second four-bar mechanism, a pedal rod is arranged between the rear sides of the rotating arms on the left side and the right side, the front ends of the rotating arms are movably connected with a connecting rod, and the front end of the connecting rod is movably connected with a transmission rod and a driving rod; the front end of the transmission rod is movably connected to the first four-bar mechanism, and the top of the driving rod is fixedly connected to the second four-bar mechanism. The base has the advantages of being good in placing stability and convenient to move.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a base and a sofa using the base. Background Art

[0002] As a necessary furniture for the home, the sofa plays an extremely important role in life. In order to ensure the comfort of its use, more wood, metal, sponge and other materials are often used, which makes the weight of the sofa heavier and heavier. After being placed, it is relatively heavy and inconvenient to move it daily. In order to solve the above problems, sofas with casters have appeared. However, the above sofas are not easy to fix. For this reason, casters with brakes have appeared. After the sofa is moved to a fixed position, the brakes are applied to prevent the casters from moving. Since the casters are loaded for a long time, the casters are easily damaged, and the brakes of the casters are at risk of failure. Especially for the elderly with inconvenient legs and feet, they want to enjoy the comfort brought by the sofa. At the same time, when they need to move, they often need to use a wheelchair, and they need to carry the elderly at the same time, which is extremely inconvenient. How to solve the above problems has become a top priority for those skilled in the art. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a base which has the characteristics of good placement stability and easy movement.

[0004] The cam is an angular movement of the rotation of the steering wheel, the rotation of the steering wheel being arranged on the left and right sides of the steering column, the cam being arranged on the right and left sides of the steering column, the cam being arranged on the left and right sides of the steering column, the cam being arranged on the right and left sides of the steering column, the cam being arranged on the right and left sides of the steering column, the cam being arranged on the right and left sides of the steering column, the cam being arranged on the

[0005] Further preferably, a front cross bar and a rear cross bar are spaced apart above the front end of the frame, the first four-bar mechanism includes a first connecting rod, the front and rear ends of the first connecting rod are respectively movably connected to a front rocker arm and a rear rocker arm, the top of the front rocker arm is movably connected to the front cross bar, the top of the rear rocker arm is movably connected to the rear cross bar, and the first roller is arranged below the first connecting rod.

[0006] Further preferably, support parts are vertically provided on the left and right sides of the rear end of the frame body, the rotating arm is arranged on the inner side of the support part, the second four-bar mechanism includes an upper rocker and a lower rocker movably connected to the inner side of the support part, the rear end of the upper rocker is movably connected to a second connecting rod, the other end of the second connecting rod is movably connected to the rear end of the lower rocker, the second roller is arranged below the second connecting rod, and the top of the driving rod is fixed on the lower rocker.

[0007] The swivel arm is further preferably provided with a swing arm rotatably arranged adjacent to the tail end of the swivel arm, a limit rod is provided on the swivel arm, the front end of the swing arm abuts against the bottom side surface of the limit rod, the swing arm and the tail end of the swivel arm are detachably fixedly connected by a fastener, and the foot rod is arranged between the tail ends of the left and right swing arms; when in use, the fastener is first removed, and then the swing arm is rotated to a vertical state by lifting the foot rod, at which time the base is in a packed state, and the small packing volume of the base is convenient for transportation; the swing arm is rotated by pulling down the foot rod until the front end of the swing arm abuts against the bottom side surface of the limit rod, and the swing arm is fixedly connected to the swivel arm by the fastener, and since the swing arm increases the size of the power arm of the swivel arm, the user can easily lift or press down the foot rod to drive the left and right swivel arms to rotate synchronously.

[0008] A sofa comprises the base.

[0009] The beneficial effects of the utility model are as follows: when working, the left and right rotating arms are driven to rotate synchronously by lifting or pressing the foot rod, and the rotating arm simultaneously drives the first four-bar mechanism and the second four-bar mechanism to move, so that the first roller and the second roller are simultaneously raised or lowered; the base includes a roller supporting state and a supporting foot supporting state, and the base can be switched between the roller supporting state and the supporting foot supporting state by lifting or pressing the foot rod; in the initial state, the supporting foot of the base is supported on the ground, and the first roller and the second roller are both in a suspended state, at which time the base is in a supporting foot supporting state and has good placement stability; the left and right rotating arms are driven to rotate synchronously by pressing the foot rod downward, and the rotating arm simultaneously drives the first four-bar mechanism and the second four-bar mechanism to move, so that the first roller and the second roller are simultaneously lowered and supported on the ground, and the supporting foot of the base enters a suspended state, at which time the base is in a roller supporting state and is easy to move; the base of the utility model has the characteristics of good placement stability and easy movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to clearly illustrate the innovative principle of the utility model and its advantages over existing bases, possible embodiments are described below by non-limiting examples of applying the principle with the aid of the accompanying drawings. In the drawings:

[0011] Figure 1It is a three-dimensional diagram of the base of the utility model when it is in a state of being supported by supporting feet;

[0012] Figure 2 for Figure 1 A partial enlarged view of point A;

[0013] Figure 3 for Figure 1 A partial enlarged view of point B;

[0014] Figure 4 for Figure 1 The main view of

[0015] Figure 5 is a three-dimensional diagram of the base in a roller-supported state;

[0016] Figure 6 for Figure 5 The main view of

[0017] Figure 7 is a schematic diagram of the base in a packed state;

[0018] Figure 8 for Figure 7 The main view of

[0019] Fig. 9 It is a schematic diagram of the sofa. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0022] It should be noted that all directional indications in the present embodiment (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example 1

[0024] like Figure 1-8 A base comprises a frame 1, wherein the bottom of the frame 1 is provided with four supporting feet 2 distributed in four corners, the left and right sides of the front end of the frame 1 are respectively provided with a first four-bar mechanism 3, a first roller 4 is provided below the first four-bar mechanism 3, a rotating arm 5 and a second four-bar mechanism 6 are respectively provided on the left and right sides of the rear end of the frame 1, a second roller 7 is provided below the second four-bar mechanism 6, the rotating arm 5 is located at the rear side of the second four-bar mechanism 6, a stepping rod 8 is provided between the rear sides of the rotating arms 5 on the left and right sides, a connecting rod 9 is movably connected to the front end of the rotating arm 5, a transmission rod 10 and a driving rod 11 are movably connected to the front end of the connecting rod 9, the front end of the transmission rod 10 is movably connected to the first four-bar mechanism 3, and the top of the driving rod 11 is fixedly connected to the second four-bar mechanism 6; when in use, the rotating arms 5 on the left and right sides are driven to rotate synchronously by lifting or pressing the stepping rod 8, and the rotating arms 5 simultaneously drive the first four-bar mechanism 3 and the second four-bar mechanism 6 to move, so that the first roller 4 and the second roller 7 rise or fall simultaneously.

[0025] A front cross bar 12 and a rear cross bar 13 are provided above the front end of the frame 1, and the first four-bar mechanism 3 includes a first connecting rod 14, the cross section of the first connecting rod 14 is groove-shaped, the left and right sides of the front end of the first connecting rod 14 are movably connected with front rocking arms 15, and the left and right sides of the tail end of the first connecting rod 14 are movably connected with rear rocking arms 16, the top of the front rocking arm 15 is movably connected to the front cross bar 12, and the top of the rear rocking arm 16 is movably connected to the rear cross bar 13, and the first roller 4 is arranged below the first connecting rod 14; preferably, the first four-bar mechanism 3 is a parallelogram mechanism, and the first four-bar mechanism 3 can also be a crank rocker mechanism or a double rocker mechanism.

[0026] Support parts 17 are vertically provided on the left and right sides of the rear end of the frame 1, respectively, the rotating arm 5 is arranged on the inner side of the support part 17, the second four-bar mechanism 6 includes an upper rocker 18 and a lower rocker 19 movably connected to the inner side of the support part 17, the rear end of the upper rocker 18 is movably connected to the second connecting rod 23, the other end of the second connecting rod 23 is movably connected to the rear end of the lower rocker 19, the second roller 7 is arranged below the second connecting rod 23, and the top of the driving rod 11 is fixed to the front end of the lower rocker 19; preferably, the second four-bar mechanism 6 is a parallelogram mechanism, and the second four-bar mechanism 6 can also be a crank rocker mechanism or a double rocker mechanism.

[0027] Preferably, a swing arm 20 is rotatably arranged adjacent to the tail end of the rotating arm 5, a limit rod 21 is arranged on the rotating arm 5, the front end of the swing arm 20 abuts against the bottom side of the limit rod 21, the swing arm 20 and the tail end of the rotating arm 5 are detachably fixedly connected by a fastener, and the stepping rod 8 is arranged between the tail ends of the left and right swing arms 20; Figure 7-8 When in use, first remove the fasteners, then lift the foot rod 8 to rotate the swing arm 20 to a vertical state. At this time, the base is in a packed state, and the small packing volume of the base is convenient for transportation; pull down the foot rod 8 to rotate the swing arm 20 until the front end of the swing arm 20 abuts against the bottom side of the limit rod 21, and fix the swing arm 20 to the rotating arm 5 through the fasteners. Since the swing arm 20 increases the power arm size of the rotating arm 5, the user can easily lift or press down the foot rod 8 to drive the left and right rotating arms 5 to rotate synchronously.

[0028] During operation, the left and right rotating arms 5 are driven to rotate synchronously by lifting or pressing the foot rod 8, and the rotating arms 5 simultaneously drive the first four-bar mechanism 3 and the second four-bar mechanism 6 to move, so that the first roller 4 and the second roller 7 are raised or lowered simultaneously; the base includes a roller support state and a support foot support state, and the base can be switched between the roller support state and the support foot support state by lifting or pressing the foot rod 8; in the initial state, Figure 1 and 4 , the support foot 2 of the base is supported on the ground, the first roller 4 and the second roller 7 are both in a suspended state, at this time the base is in a state of support by the support foot and has good placement stability; Figure 5-6 By pressing down the foot rod 8 to drive the left and right rotating arms 5 to rotate synchronously, the rotating arms 5 simultaneously drive the first four-bar mechanism 3 and the second four-bar mechanism 6 to move, so that the first roller 4 and the second roller 7 simultaneously descend and are supported on the ground, and the supporting feet 2 of the base enter a suspended state. At this time, the base is in a roller support state and is easy to move; the base of this embodiment has the characteristics of good placement stability and easy movement. Example 2

[0029] A sofa comprises the base described in Example 1.

[0030] The above is a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A base, characterized in that: The invention comprises a frame (1), wherein the frame (1) is provided with a supporting foot (2), the left and right sides of the front end of the frame (1) are respectively provided with a first four-bar mechanism (3), a first roller (4) is provided below the first four-bar mechanism (3), the left and right sides of the rear end of the frame (1) are respectively provided with a rotating arm (5) and a second four-bar mechanism (6), a second roller (7) is provided below the second four-bar mechanism (6), the rotating arm (5) is located at the rear side of the second four-bar mechanism (6), a foot pedal (8) is provided between the rear sides of the left and right rotating arms (5), and the front end of the rotating arm (5) is provided with a first four-bar mechanism (3). A connecting rod (9) is movably connected, and the front end of the connecting rod (9) is movably connected to a transmission rod (10) and a driving rod (11), the front end of the transmission rod (10) is movably connected to the first four-bar mechanism (3), and the top of the driving rod (11) is fixedly connected to the second four-bar mechanism (6); when in use, the left and right rotating arms (5) are driven to rotate synchronously by lifting or pressing the foot rod (8), and the rotating arms (5) simultaneously drive the first four-bar mechanism (3) and the second four-bar mechanism (6) to move, so that the first roller (4) and the second roller (7) are simultaneously raised or lowered.

2. The base according to claim 1, characterized in that: A front crossbar (12) and a rear crossbar (13) are provided above the front end of the frame (1), and the first four-bar mechanism (3) comprises a first connecting rod (14). The front and rear ends of the first connecting rod (14) are respectively movably connected to a front rocker (15) and a rear rocker (16). The top of the front rocker (15) is movably connected to the front crossbar (12), and the top of the rear rocker (16) is movably connected to the rear crossbar (13). The first roller (4) is provided below the first connecting rod (14).

3. The base according to claim 1, characterized in that: Support parts (17) are respectively vertically provided on the left and right sides of the rear end of the frame (1); the rotating arm (5) is arranged on the inner side of the support part (17); the second four-bar mechanism (6) comprises an upper rocker (18) and a lower rocker (19) movably connected to the inner side of the support part (17); the rear end of the upper rocker (18) is movably connected to a second connecting rod (23); the other end of the second connecting rod (23) is movably connected to the rear end of the lower rocker (19); the second roller (7) is arranged below the second connecting rod (23); and the top of the driving rod (11) is fixed to the lower rocker (19).

4. The base according to claim 1, characterized in that: A swing arm (20) is rotatably arranged adjacent to the tail end of the rotating arm (5), a limiting rod (21) is provided on the rotating arm (5), a front end of the swing arm (20) abuts against a bottom side of the limiting rod (21), the swing arm (20) and the tail end of the rotating arm (5) are detachably fixedly connected via a fastener, and the stepping rod (8) is arranged between the tail ends of the left and right swing arms (20).

5. A sofa, characterized in that: The sofa comprises the base according to any one of claims 1-4.

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