A sofa capable of automatic rocking

Abstract

This utility model discloses an automatically rocking sofa, relating to the field of furniture technology, comprising a base and a sofa body. The sofa body is swayably connected to the base via a support shaft. The base contains a drive motor and a guide mechanism. The output end of the drive motor is connected to a transmission mechanism that converts rotational motion into rocking motion. When the motor is started, its output shaft drives a first connecting rod to rotate, which in turn pulls or pushes a second connecting rod, which in turn drives a moving rod to move. Because the two ends of the moving rod are restricted within the arc-shaped groove of the limiting ring, it cannot move freely and can only slide along the preset trajectory of the arc-shaped groove. This constrained motion is converted into a reciprocating swing with a specific angle and amplitude by a rocker arm, thereby driving the support shaft to reciprocate in both directions. Finally, the sofa body, which is fixedly connected to the support shaft, begins to perform a stable and smooth back-and-forth rocking motion.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a sofa that can automatically rock. Background Technology

[0002] Rocking sofas or rocking chairs are a common type of leisure furniture, widely popular because their gentle rocking motion helps users relax and relieve stress.

[0003] However, existing automatic rocking sofas typically use motor drives, but their transmission and guiding mechanisms often have some shortcomings: some employ complex gear transmissions or linkage mechanisms, resulting in high manufacturing costs, loud operating noise, and inconvenient maintenance; others use simple rocking mechanisms but lack effective mechanical limits, making the rocking amplitude unstable and potentially leading to overshoot or tipping risks under varying loads, thus requiring improved safety. Furthermore, some products using program-controlled solenoid valves or pneumatic devices are expensive and rely on complex control systems, resulting in a relatively high failure rate.

[0004] Therefore, there is an urgent need in this field for an automatic rocking sofa solution that is simple and reasonable in structure, operates smoothly and quietly, has a fixed swing amplitude, is safe and reliable, and has easily controllable costs. Utility Model Content

[0005] The purpose of this invention is to provide a sofa that can automatically rock, which solves the problems of mechanical complexity, instability, high cost and failure rate in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatically rocking sofa, comprising a base and a sofa body:

[0007] The sofa body is swayably connected to the base via a support shaft;

[0008] The base is equipped with a drive motor and a guide mechanism;

[0009] The output end of the drive motor is connected to a transmission mechanism that converts rotational motion into oscillating motion;

[0010] A rocker arm is fixedly connected to the output end of the transmission mechanism, and the upper end of the rocker arm is fixedly connected to the support shaft.

[0011] The guiding mechanism has a constrained arc-shaped motion path, and the transmission mechanism slides with the guiding mechanism, so that when the transmission mechanism drives the rocker arm to swing, its motion trajectory is restricted by the guiding mechanism.

[0012] Preferably, the transmission mechanism includes:

[0013] The first connecting rod is connected to the output end of the drive motor;

[0014] A second connecting rod that is rotatably connected to the first connecting rod;

[0015] And a movable rod rotatably connected to the second connecting rod;

[0016] The movable rod is fixedly connected to the lower end of the rocker arm and forms the output end of the transmission mechanism.

[0017] Preferably, the guiding mechanism includes a positioning rod and a limiting ring. The positioning rod is fixed inside the base, and the limiting ring is fixed to the upper end of the positioning rod. The limiting ring has an arc-shaped motion path inside, and both ends of the moving rod extend into the arc-shaped motion path and can slide along it.

[0018] Preferably, the curvature of the arc-shaped motion path is configured to limit the swaying amplitude of the sofa body.

[0019] Preferably, the drive motor is a dual-axis motor.

[0020] Preferably, the support shaft passes through the sofa body and is fixedly connected to it, and its two ends are rotatably connected to the base through bearings.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] When the motor is started, its output shaft drives the first connecting rod to rotate. The first connecting rod pulls or pushes the second connecting rod, which in turn drives the moving rod to move. Because the two ends of the moving rod are restricted within the arc-shaped groove of the limiting ring, it cannot move freely and can only slide along the preset trajectory of the arc-shaped groove. This constrained motion is converted into a reciprocating oscillation with a specific angle and amplitude by the rocker arm, thereby driving the support shaft to reciprocate in both directions. Finally, the sofa body, which is fixedly connected to the support shaft, begins to perform a stable and smooth back-and-forth rocking motion. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the product of this utility model;

[0024] Figure 2 This is a schematic diagram of the overall front view of the product of this utility model;

[0025] Figure 3 This is a schematic diagram of the connection structure between the drive mechanism and the guide mechanism of the present invention.

[0026] In the diagram: 1. Base; 2. Sofa body; 3. Support shaft; 41. Drive motor; 42. First connecting rod; 43. Second connecting rod; 44. Moving rod; 45. Rocker arm; 5. Guide mechanism; 51. Positioning rod; 52. Limiting ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] This utility model relates to a sofa that can automatically rock, such as Figure 1-3 As shown, it includes a base 1, a sofa body 2, a support shaft 3, a drive mechanism 4, and a guide mechanism 5;

[0029] The base 1 is a hollow box structure used to house and support all internal mechanical components. The sofa body 2 is located above the base 1 and is the part where the user sits.

[0030] The support shaft 3 passes through the bottom frame of the sofa body 2 and is fixedly connected to it by fasteners (e.g., bolts) or welding. Both ends of the support shaft 3 extend to the sides of the sofa body 2 and are rotatably connected to the side walls of the base 1 via bearings 31. This allows the sofa body 2 to sway back and forth relative to the base 1 with the support shaft 3 as its axis.

[0031] Both the drive mechanism 4 and the guide mechanism 5 are located inside the base 1;

[0032] The drive mechanism 4 includes a motor 41, a first connecting rod 42, a second connecting rod 43, a moving rod 44, and a rocker arm 45. In this embodiment, the motor 41 is preferably a dual-shaft motor, fixedly mounted on the bottom surface of the base 1. The output end of the motor 41 is directly connected to one end of the first connecting rod 42, thus forming a crank structure. The other end of the first connecting rod 42 is rotatably connected to one end of the second connecting rod 43 via a first rotating shaft. The other end of the second connecting rod 43 is rotatably connected to the middle of the moving rod 44 via a second rotating shaft.

[0033] The lower end of the rocker arm 45 is fixedly sleeved on the outer wall of the middle part of the moving rod 44 (e.g., through an interference fit or key connection), and its upper end is fixedly sleeved on the outer wall of the support shaft 3. Therefore, the swinging of the rocker arm 45 will be directly converted into the rotation of the support shaft 3;

[0034] The guiding mechanism 5 is used to constrain the motion trajectory of the drive mechanism, and includes a positioning rod 51 and a limiting ring 52. The positioning rod 51 is vertically fixed to the inner bottom surface of the base 1. The bottom of the limiting ring 52 is fixedly connected to the upper end of the positioning rod 51, so that it is stably suspended in the base 1. An arc-shaped groove 53 is formed inside the limiting ring 52, which constitutes a constrained arc-shaped motion path;

[0035] Crucially, both ends of the moving rod 44 (i.e. the parts extending out from both sides of the rocker arm 45) extend into the arc-shaped groove 53 of the limiting ring 52, and can slide freely in an arc within the groove;

[0036] The curvature of the arc groove 53 of the limiting ring 52 directly determines and limits the sliding range of the moving rod 44, thereby precisely controlling the swing angle of the rocker arm 45 and the final swing amplitude of the sofa body 2.

[0037] In practical use: When the motor 41 is started, its output shaft drives the first connecting rod 42 to rotate. The first connecting rod 42 pulls or pushes the second connecting rod 43, which in turn drives the moving rod 44 to move. Since the two ends of the moving rod 44 are restricted within the arc groove 53 of the limiting ring 52, it cannot move freely and can only slide along the preset trajectory of the arc groove 53. This constrained movement is converted into a reciprocating swing with a specific angle and amplitude by the rocker arm 45, thereby driving the support shaft 3 to reciprocate in both directions. Finally, the sofa body 2, which is fixedly connected to the support shaft 3, begins to perform a stable and smooth back-and-forth rocking motion.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sofa that can automatically rock, comprising a base (1) and a sofa body (2), characterized in that: The sofa body (2) is swayably connected to the base (1) via a support shaft (3); The base (1) is equipped with a drive motor (41) and a guide mechanism (5). The output end of the drive motor (41) is connected to a transmission mechanism that converts rotational motion into oscillating motion. The transmission mechanism includes: a first connecting rod (42) connected to the output end of the drive motor (41); a second connecting rod (43) rotatably connected to the first connecting rod (42); and a moving rod (44) rotatably connected to the second connecting rod (43). The output end of the transmission mechanism is fixedly connected to a rocker arm (45), the upper end of the rocker arm (45) is fixedly connected to the support shaft (3), and the moving rod (44) is fixedly connected to the lower end of the rocker arm (45), thus forming the output end of the transmission mechanism; The guide mechanism (5) includes a positioning rod (51) and a limiting ring (52). The positioning rod (51) is fixed inside the base (1), and the limiting ring (52) is fixed to the upper end of the positioning rod (51). A constrained arc-shaped motion path is opened inside the limiting ring (52). The two ends of the moving rod (44) extend into the arc-shaped motion path and can slide along it, so that when the transmission mechanism drives the rocker arm (45) to shake, its motion trajectory is restricted by the guide mechanism (5).

2. The automatically rocking sofa according to claim 1, characterized in that: The curvature of the arc-shaped motion path is configured to limit the swaying amplitude of the sofa body (2).

3. The automatically rocking sofa according to claim 1, characterized in that: The drive motor (41) is a dual-axis motor.

4. The automatically rocking sofa according to claim 1, characterized in that: The support shaft (3) passes through the sofa body (2) and is fixedly connected to it. Its two ends are rotatably connected to the base (1) through bearings.

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