JPH0516339Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to an improvement of a connection device between a cap and a round pipe in a handrail.

(Prior Art) Conventionally, in a connection device for connecting a round pipe with a circular cross section such as a column and a support that is removably engaged with a marukasa tree to form a handrail hat, a capacitor is used as shown in FIG. 5 of the drawing. The curved end surface of the round pipe 4a is brought into contact with the required part of the outer peripheral surface of the Marukasa wooden receiver 3a of 1a, and the screw 8a is inserted into the bis pocket 5a of the round pipe 4a through the screw insertion hole 7a provided in the Marukasa wooden receiver 3a. It is connected by connecting.

(Problem that the invention attempts to solve) However, in this conventional connection device, the screw insertion hole 7
The screw 8a is inserted into the screw pocket 5a of the round pipe 4a through the screw insertion hole 7a and is screwed into the screw pocket 5a of the round pipe 4a. The screw tightening is extremely unstable, and the fixing and setting work is time-consuming, resulting in poor workability and inefficiency, and a reliable, strong, and stable connection cannot be expected.

(Means for Solving the Problems) This invention was made to solve the above problems, and is constructed as follows.

That is, the connecting device of this invention is a connection device between a round pipe having a circular cross section and a round pipe that is removably engaged with a round box, and which is removably engaged with a round box. A stepped part consisting of a stepped upper surface having an insertion hole is provided respectively, and the curved end surface of the round pipe is brought into contact with the required part of the outer periphery of the Marukasa tree receiver, and a screw is screwed into the bis pocket of the round pipe through the screw insertion hole of the stepped part. It is something that has to be tightened.

Next, embodiments of this inventive connecting device will be described below with reference to the drawings.

〔Example〕

First, reference numeral 1 is a hollow cap with a circular cross section, which is made of aluminum alloy or the like and is divided into a marukasagi 2 and a marukasagi receiver 3, which are detachably engaged with each other in a separable manner. Reference numeral 4 denotes a hollow round pipe with a circular cross section, such as a support, made of aluminum alloy, etc. On the inner surface of the round pipe 4, four (plural) bis pockets 5 with circular arc grooves in the axial direction are formed at equal intervals. The distal end surface of this round pipe 4 is a curved end surface 10 corresponding to the outer circumferential surface of the marukasagi holder 3 of the Kasagi 1.

Therefore, in this invention, two parallel left and right axially stepped portions 6, 6 are provided on the inner surfaces of the left and right sides of the bottom of the Marukasa wooden support 3, respectively. ing. On each step upper surface 6a of the two left and right stepped portions 6, 6,
Screw insertion holes 7 are formed at four locations, two at positions corresponding to each of the four screw pockets 5 of the round pipe 4. Reference numeral 9 denotes a through hole drilled in the center bottom of the Marukasa wooden receiver 3 at a position corresponding to the connecting portion of the round pipe 4. However, in this device, the curved end surface 10 of the round pipe 4 is brought into contact with the corresponding outer circumferential portion of the Marukasagi support 3, and the screw insertion holes 7 of the left and right stepped portions 6 are inserted into the respective screw pockets 5 of the round pipe 4. Screw 8
The Marukasagi holder 3 and the round pipe 4 are connected and connected by screwing them into each other.

(Effects of the invention) This invented device has stepped portions each consisting of a raised surface and a stepped upper surface having a screw insertion hole on the inner surface of the left and right sides of the bottom of the Marukasa wooden holder, and the curved end surface of the round pipe is connected to the outer circumference of the Marukasa wooden holder. Since the screw is screwed into the screw pocket of the round pipe through the screw insertion hole of the stepped part, the screw insertion hole of the Marukasa wooden receiver is provided as a long stable through hole in the thick part. This has outstanding effects such as screwing in and tightening screws in the stepped portion can be performed extremely smoothly and stably, and connection and fixing can be performed reliably, strongly, and efficiently with good workability.

In addition, the stepped parts on the left and right serve as rib beads that reinforce the Marukasa wood holder of each screw threaded part, which not only increases the strength of the Kasagi itself, but also provides a stable connection between the Marukasa wood holder and the round pipe. It has excellent effects such as significantly contributing to improving strength, robustness, and durability.

[Brief explanation of the drawing]

The drawings show an embodiment of this devised connection device, in which Fig. 1 is a longitudinal sectional front view of the main part, Fig. 2 is a plan view with the round cap removed, and Fig. 3 is a cross-sectional plane of the round pipe. FIG. 4 is an external perspective view showing a handrail installed on a balcony, and FIG. 5 is a vertical cross-sectional view of the main part of a conventional connection. 1, 1a... Kasagi, 2... Marukasagi, 3, 3a...
...Marukasagi Uke, 4,4a...Round pipe, 5,5a...
... Bis pocket, 6 ... Stepped part, 6a ... Step top surface, 6b ... Raise, 7, 7a ... Screw insertion hole,
8, 8a...screw, 9...through hole, 10...curved end surface.

Claims (1)

[Scope of utility model registration request] In a connection device between a round pipe with a circular cross section and a round pipe that is removably engaged with a marukasa wood to form a cap, the bottom of the marukasa wood support consists of a stepped upper surface with raised and screw insertion holes on both left and right inner surfaces. Each pipe has a stepped part, the curved end surface of the round pipe contacts the required part of the outer periphery of the Marukasa wood support, and a screw is screwed into the bis pocket of the round pipe through the screw insertion hole of the stepped part. A connection device between the cap and the round pipe in the handrail.