A collapsible bathtub frame

Abstract

The present invention relates to a foldable bathtub frame, which is composed of left and right decorative outer shells and a number of rotatable folding bracket assemblies. The present invention realizes folding and stretching by adopting rotatable folding bracket assemblies. The whole structure is convenient to retract and stretch. After retraction, the bathtub occupies a small area. Compared with the connection method using soft materials, the service life and anti-fatigue aging are greatly enhanced.

Description

Technical Field

[0001] The present invention relates to the field of sanitary ware, and particularly to a foldable bathtub frame. Background Art

[0002] Most of the folding adult bathtubs on the market now are circular or oblong and are folded up and down. The disadvantages of this method are: 1. After folding up and down, the entire cross-sectional area is still very large, which is not easy to store at home and increases the floor area occupied. 2. For the circular or oblong bathtubs on the market, the space is small and it is uncomfortable for adults to use. 3. Generally, most of the up-and-down folding methods use secondary injection molding with soft materials to connect the upper bathtub and the lower bathtub. This method is costly, and after the bathtub is unfolded and folded multiple times, the soft materials are prone to aging and damage. Summary of the Invention

[0003] In order to overcome the above deficiencies, the present invention aims to provide a foldable bathtub frame. The present invention realizes folding and stretching by adopting a rotatable folding link assembly. The whole structure is convenient for retracting and stretching. After retracting, the occupied area of the bathtub is small. Compared with the method of connecting with soft materials, the service life and anti-fatigue aging are greatly enhanced.

[0004] The present invention achieves the above object through the following technical solutions: A foldable bathtub frame, the frame is composed of left and right decorative outer shells and several rotatable folding link assemblies. The rotatable folding link assembly includes Link I, Connector I, and Link II; wherein: the rotating stud 1 of Link I is sleeved on the connector rotating hole 1 of Connector I, and then the upper and lower limits are fixed with fixing screws; similarly, the rotating stud of Link II is sleeved on the connector rotating hole 1 of Connector I, and then the upper and lower limits are fixed with fixing screw 7; a limit matching structure is also provided between Link I, Link II and Connector I. The several rotatable folding link assemblies are four groups. The limit matching structure includes two cantilever male fasteners provided on Connector I, a 90° sector-shaped limit platform provided on the side of the connector rotating hole 1 on Connector I, a 180° semi-circular groove provided around the rotating stud 1 of Link I, and a positioning female fastener provided on Link I; the 180° semi-circular groove provided on Link I and the 90° sector-shaped limit platform provided on Connector I are concentric and cooperate with each other. There are cantilever male fasteners on Connector I to cooperate with the positioning female fastener on Link I. When the link rotates to the specified position, the cantilever male fastener enters the positioning female fastener 8.

[0005] Preferably, a reinforcing vertical rod is provided between the upper and lower groups of the rotatable folding link assemblies. The reinforcing vertical rod and Connector I are in interference fit with an axial hole, and the reinforcing vertical rod is sleeved into the hole column at the lower end of Connector I.

[0006] The beneficial effects of the present invention are as follows: The whole structure is convenient to retract and extend. The size of the unfolded bathtub can also be controlled by adjusting the number of connecting rods; the styles and forms are diverse; in addition, this folding bathtub uses a mechanical structure to achieve folding and stretching, which greatly enhances the service life and resistance to fatigue and aging compared with the method of connecting with flexible materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is an exploded view of an expandable frame of a foldable bathtub according to the present invention;

[0008] Figure 2 is a cross-sectional schematic view of an expandable frame of a foldable bathtub according to the present invention;

[0009] Figure 3 is a schematic view of the contraction of an expandable frame of a foldable bathtub according to the present invention;

[0010] Figure 4 is an enlarged view of the joint connection of an expandable frame of a foldable bathtub according to the present invention;

[0011] Figure 5 is a top-down sectional view of the folding structure of an expandable frame of a foldable bathtub according to the present invention in the unfolded state;

[0012] Figure 6 is a top-down sectional view of the folding structure of an expandable frame of a foldable bathtub according to the present invention in the retracted state;

[0013] Figure 7 is an enlarged view of the connecting rod I in the folding structure of an expandable frame of a foldable bathtub according to the present invention;

[0014] Figure 8 is an enlarged view of the connecting rod I in the folding structure of an expandable frame of a foldable bathtub according to the present invention;

[0015] Figure 9 is a schematic view of the fully stored state of an expandable frame of a foldable bathtub according to the present utility model.

[0016] In the figure: 1 - decorative outer shell; 2 - connecting rod I; 3 - connecting piece I; 4 - reinforcing vertical rod; 5 - connecting rod II; 6 - connecting piece II; 7 - fixing screw; 8 - positioning female buckle; 9 - cantilever male buckle; 10 - fan-shaped limiting platform; 11 - semi-circular groove; 12 - rotating hole of the connecting piece; 13 - rotating stud. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto:

[0018] Embodiment: As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 ,Figure 6 , Figure 7 , Figure 8 , Figure 9 As shown, a foldable bathtub frame is composed of left and right decorative shells 1 and twelve groups of rotatable foldable connecting rods; one group of rotatable foldable connecting rods is composed of connecting rod I2, connecting member I3, and connecting rod II5; wherein: the rotating stud 13 of connecting rod I2 is sleeved on the connecting member rotating hole 12 of connecting member I3, and then the upper and lower limit positions are fixed by fixing screws 7; similarly, the rotating stud 13 of connecting rod II5 is sleeved on the connecting member rotating hole 12 of connecting member I3, and then the upper and lower limit positions are fixed by fixing screws 7; because the length of the rotating stud 13 is slightly longer than the connecting member rotating hole 12, after the fixing screw 7 is driven into the rotating stud 13, the connecting rod I2 can rotate freely around the connecting member rotating hole 12; a limiting matching structure is also provided between the connecting rod I2, the connecting rod II5 and the connecting member I3; the said limiting matching structure includes: I3 is provided with two cantilever male buckles 9, a 90° fan-shaped limit platform 10 is provided on the side of the connecting member rotating hole 12 on the connecting member I3, a 180° semicircular groove 11 is provided around the rotating stud 13 of the connecting rod I2, and a positioning female buckle 8 is provided on the connecting rod I2; the 180° semicircular groove 11 provided on the connecting rod I2 and the 90° fan-shaped limit platform 10 provided on the connecting member I3 are concentric, and the two cooperate with each other, so that the connecting rod I2 can only rotate 90° around the connecting member rotating hole 12; there is a cantilever male buckle 9 on the connecting member I3, which cooperates with the positioning female buckle 8 on the connecting rod I2. When the connecting rod is rotated to the specified position, the cantilever male buckle 9 enters the positioning female buckle 8 to achieve the effect of limiting cooperation; bending the connecting rod I2 can force the cantilever male buckle 9 to leave the positioning female buckle 8, so that the limiting cooperation at this location fails, and the connecting rod I rotates freely. The structure of other groups of rotatable foldable connecting rods is similar to the structure of the rotatable foldable connecting rod in the above example. In practical applications, the number of rotatable and foldable connecting rods can be selected as needed to achieve control of the size of the bathtub.

[0019] A reinforcing vertical rod 4 is provided between the upper and lower groups of the rotatable foldable connecting rod assembly. The reinforcing vertical rod 4 and the connecting piece I3 or the connecting piece II6 have an interference fit between the shaft hole, and the reinforcing vertical rod 4 is sleeved in the hole column 8 at the lower end of the connecting piece I3 or the connecting piece II6.

[0020] The specific usage process is as follows: Lay a PVC heat-insulating cloth inside the foldable bathtub frame to form a complete bathtub; when the bathtub needs to be used, pull it open and pull the plastic decorative outer shell 1 to both sides. At this time, the connecting rod I 2 will rotate around the connecting piece I 3. The connecting rod I 2 is sleeved on the connecting piece II 3 and fixed by the fixing screw 7. When the direction of the connecting rod I 2 is parallel to the connecting piece I 3, the buckle on the connecting piece is buckled on the connecting rod to achieve the fixing effect. Then, the connecting rod II 5 rotates around the connecting piece II 6. In the same way as the connecting rod I, when the direction of the connecting rod II 5 is parallel to the connecting piece II 6, the cantilever male buckle on the connecting piece is buckled into the positioning female buckle on the connecting rod to achieve the fixing effect. When storing, push the decorative outer shells 1 on both sides inward, and the rotatable folding connecting rod assembly will be forced to contract. When the connecting rod and the connecting rod connecting piece are perpendicular, the storage is completed.

[0021] The above are the specific embodiments of the present invention and the technical principles applied. If the changes made according to the concept of the present invention do not exceed the spirit covered by the description and the drawings in terms of their functional effects, they should still fall within the protection scope of the present invention.

Claims

1. A foldable bathtub frame, characterized in that, The frame is composed of left and right decorative outer shells (1) and several rotatable and foldable connecting rod assemblies combined; the rotatable and foldable connecting rod assembly includes connecting rod I (2), connecting piece I (3), and connecting rod II (5); wherein: the rotating stud (13) of connecting rod I (2) is sleeved on the connecting piece rotating hole (12) of connecting piece I (3), and then the upper and lower limits are fixed with fixing screws (7); similarly, the rotating stud (13) of connecting rod II (5) is sleeved on the connecting piece rotating hole (12) of connecting piece I (3), and then the upper and lower limits are fixed with fixing screws (7); a limiting and mating structure is also provided between connecting rod I (2), connecting rod II (5) and connecting piece I (3); the several rotatable and foldable connecting rod assemblies are four groups; the limiting and mating structure includes two cantilever male fasteners (9) provided on connecting piece I (3), a 90° sector-shaped limiting platform (10) provided on the edge of the connecting piece rotating hole (12) on connecting piece I (3), a 180° semi-circular groove (11) provided around the rotating stud (13) of connecting rod I (2), and a positioning female fastener (8) provided on connecting rod I (2); the 180° semi-circular groove (11) provided on connecting rod I (2) and the 90° sector-shaped limiting platform (10) provided on connecting piece I (3) are concentric and cooperate with each other. There is a cantilever male fastener (9) on connecting piece I (3), which cooperates with the positioning female fastener (8) on connecting rod I (2). When the connecting rod rotates to the specified position, the cantilever male fastener (9) enters the positioning female fastener (8).

2. The foldable bathtub frame according to claim 1, wherein: A reinforcing vertical rod (4) is provided between the upper and lower groups of the rotatable and foldable connecting rod assemblies. The reinforcing vertical rod (4) and the connecting piece I (3) are in interference fit with an axial hole, and the reinforcing vertical rod (4) is sleeved in the hole column at the lower end of the connecting piece I (3).

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