Stair

Abstract

To reduce and facilitate opening force of a part of stairs.SOLUTION: A stair 100 having a lower storage space 101 is provided with an upper partial stair 100a which is fixedly provided, a lower partial stair 100b which is pivotally supported at its upper part and is pivotally provided so that its lower end part can be raised, a support 140 which is suspended downward from a lower part of the upper partial stair 100a, and a biasing member 150 which is connected between a lower part of the support 140 and a part of the lower partial stair 100b which is lower than the pivotally supported part and biases the lower end part of the lower partial stair 100b in the direction of raising.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to stairs installed in a house or the like. [Background technology]

[0002] There is a known staircase for a house or the like in which the stair unit can be opened and closed like the tailgate of an automobile, and the space under the stairs can be used as a storage room (see, for example, Patent Document 1). In such a staircase, for example, stringers are fixed to wall panels, and a unit frame that integrates five staircase elements is connected to support springs fixed to the stringers, thereby forming an opening and closing mechanism. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 5-248080 Summary of the Invention [Problem to be solved by the invention]

[0004] As described above, when the stair element is connected to a support spring fixed to a stringer to form an opening and closing mechanism, the direction of extension and contraction of the support spring when the stair element is closed is almost along the stringer, so it is not easy to significantly reduce the force required to open the stair element. In addition, the wall panel to which the stringer is fixed needs to be strong to withstand the biasing force of the support spring, which tends to make construction difficult.

[0005] The present invention has been made in consideration of the above points, and aims to easily reduce the force required to open a portion of the stairs in a staircase where part of the stairs can be opened or closed, and to make construction easier. [Means for solving the problem]

[0006] To achieve the above objectives, The present invention provides A staircase with a storage space below, a fixed upper staircase; a lower partial staircase whose upper portion is pivotally supported and whose lower end portion is rotatably provided so as to be able to ascend; A support column hanging downward from the bottom of the upper staircase section; The lower portion of the staircase is connected to the lower part of the support column and the lower portion of the staircase below the pivotally supported portion, and the biasing member biases the lower end portion of the staircase in a direction to raise the lower end portion of the staircase. The present invention is characterized by the following.

[0007] As a result, by connecting a biasing member between the lower part of the support pillar hanging down from the bottom of the upper partial staircase and a predetermined position on the lower partial staircase, it is easy to efficiently apply force to lift the lower end part of the lower partial staircase, and therefore it is easy to reduce the force required to open the lower partial staircase. [Effects of the Invention]

[0008] According to the present invention, in a staircase in which a portion of the staircase can be opened or closed, the force required to open the portion of the staircase can be easily reduced and construction can be easily carried out. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a plan view showing an example of a house to which the staircase of the embodiment is applied; [Figure 2] FIG. 10 is a schematic perspective view showing a state in which the storage space is closed; [Figure 3] Schematic perspective view showing the storage space in an open state. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0011] First, an example of a house 200 to which the staircase 100 of this embodiment is applied will be described.

[0012] As shown in Fig. 1, this house 200 has three living rooms 201 on the first floor and three living rooms on the second floor (not shown). On the first floor, there is a hallway 201a for each living room 201, and separated from these hallways 201a by a wall, there is also a hallway 202a for the living rooms on the second floor. Behind these hallways 202a, there is a stairway 100 leading to the living rooms on the second floor. Below this stairway 100, as shown in Fig. 2, there is a storage space 101 for the residents of the second floor.

[0013] 2 and 3, the staircase 100 has an upper staircase section 100a that is fixed, and a lower staircase section 100b that is rotatable via hinges 130 so that the lower end can be raised. More specifically, a pair of child steps 110 (stringers) are provided on both sides of the width of the staircase 100 from the first floor to the second floor, and treads 111 and risers 112 of the upper staircase section 100a are provided across this pair of child steps 110.

[0014] A pair of inner step steps 120 are arranged inside the lower portions of the pair of inner step steps 110. The treads 121 and risers 122 of the lower partial staircase 100b are provided across the pair of inner step steps 120 to form the lower partial staircase 100b. These step steps 121 and risers 122 may be provided so as to extend the full width of the staircase 100, i.e., to the outer portions of the step steps 110, or, as in the example shown in the figure, may be provided so as to extend to the inner portions of the pair of step steps 110, with narrow, fixed step steps 121' and risers 122' provided on both sides of the step steps 110. When step steps 121' and the like are provided as described above, it is easy to avoid interference between, for example, a handrail 170 (described later) and the lower partial staircase 100b.

[0015] The lowest tread 111 of the upper partial staircase 100a and the highest tread 121 of the lower partial staircase 100b are separated in the depth direction on the same step and connected by hinges 130, allowing the lower partial staircase 100b to rotate and the lower end of the lower partial staircase 100b to rise. Note that the connection between the upper partial staircase 100a and the lower partial staircase 100b is not limited to being by hinges 130, but may be by a pivot shaft or via a link mechanism. Also, the connection between the tread 111 of the upper partial staircase 100a and the tread 121 of the lower partial staircase 100b is not limited to being ... Furthermore, the inner chick stage 120 may be rotatably connected to the chick stage 110.

[0016] A hanging support 140 is attached to the lower position of the upper partial staircase 100a of the chick rung 110. A biasing member 150 is provided between a connecting portion 140a at the bottom of the support 140 and a connecting portion 120a provided at a predetermined position below the upper pivoted portion of the lower partial staircase 100b, and biases the lower end portion of the lower partial staircase 100b in a direction to raise the lower end portion of the lower partial staircase 100b. More specifically, both ends of the biasing member 150 are rotatably attached to the connecting portion 140a of the support 140 and the connecting portion 120a of the inner chick rung 120 of the lower partial staircase 100b. The biasing member 150 may be, for example, a gas spring, a damper, or a coil spring.

[0017] It should be noted that the stairs 100 may be provided with baseboards 160 at the connection points between the treads 111 and the wall, and with handrails 170 on the wall, but this is not the main focus of the present invention and so will not be described here.

[0018] As described above, the lower staircase 100b is pivotally supported at its upper portion and pivotally configured so that its lower end can be raised. This allows for easy access to the storage space 101 below, even when the staircase 100 is surrounded by walls on both sides. Furthermore, the biasing member 150 is connected between the connecting portion 140a of the support 140 hanging downward from the bottom of the upper staircase 100a and the connecting portion 120a of the lower staircase 100b. This allows for efficient application of force to raise the lower end of the lower staircase 100b. Therefore, even when using a biasing member 150 with a relatively small biasing force, the force required to open the lower staircase 100b can be easily reduced. The lower staircase 100b can be opened and closed not only manually but also by a motor or other means. Furthermore, the biasing member 150 is attached to the support 140 hanging downward from the lower rung 110, eliminating the need for additional wall or floor construction, making installation easier. Furthermore, the force exerted on the lower staircase section 100b can be easily reduced regardless of the strength of the walls and floors. [Explanation of symbols]

[0019] 100 stairs 100a Upper partial stairs 100b Lower partial stairs 101 Storage space 110 Hinadan 111 Treadboard 112 Kickboard 120 Inner Chick Stage 120a Connection part 121 Treadboard 121' Treadboard 122 Kickboard 122' riser 130 hinges 140 Post 140a Connection part 150 biasing member 160 Baseboard 170 Handrail 200 housing 201 Room 201a Entrance 202a Entrance

Claims

1. A staircase with a storage space below, a fixed upper staircase; a lower partial staircase whose upper portion is pivotally supported and whose lower end portion is rotatably provided so as to be able to ascend; A support column hanging downward from the bottom of the upper staircase section; The lower portion of the staircase is connected to the lower part of the support column and the lower portion of the staircase below the pivotally supported portion, and the biasing member biases the lower end portion of the staircase in a direction to raise the lower end portion of the staircase. A staircase characterized by comprising:

2. The staircase of claim 1, The upper staircase is configured by providing a tread and a riser at the upper part of a pair of steps, The lower portion of the staircase is characterized in that it is configured by providing a pair of inner steps with treads and risers arranged inside the lower portions of the pair of inner steps.

3. The staircase of claim 2, The staircase is characterized in that the biasing member is connected to the inner step.

4. The staircase of claim 3, The support is attached to a lower position of the upper partial staircase of the chick staircase. A staircase characterized by:

5. The staircase of claim 2, A staircase characterized in that the treads or risers of the lower staircase section and the treads or risers of the upper staircase section are connected by hinges.

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