JP3378754B2 - Kasagi part joint structure - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The invention of this application relates to a joint structure of a head section. More specifically, the present invention relates to a joint structure of a head section that is useful for handrails, fences, etc. installed on stairs and exteriors of houses and the like.

[0002]

2. Description of the Related Art Conventionally, a plurality of handrails, fences, and the like are often installed on stairs or an exterior of a house, etc., with each head part connected in the longitudinal direction through a joint. As joints for connecting such handrails and fences and the like, for example, those shown in FIGS. 7 and 8 are known. FIG. 7 shows an example of a conventional joint (a), and FIG. 8 is an enlarged exploded view showing the structural parts of the joint (a) shown in FIG. 7 in an enlarged manner.

As illustrated in FIGS. 7 and 8, the conventional joint (a) is, for example, a fitting portion (ki) fitted to an end portion of a heading portion (a) such as a handrail or a fence body. And a movable part (f) fitted in the fitting part (ki), and the movable part (f) is further provided with a shaft screw (h) for adjusting the bending angle. There is. In such a conventional joint (a), the fitting portion (ki) is bent at a desired angle with the shaft screw (h) of the moving portion (k) as an axis, and the fitting portion (ki) and the fitting portion (ki) are bent. As shown in FIG. 9, the handrails are supported by the support columns (c) by changing the direction of the joint (a) with respect to the head part (a) around the joint part (b) of FIG. The part (a) is connected in the longitudinal direction by adjusting the arrangement angle according to the inclination angle formed by the horizontal part (e) of the corridor and the stair part (d).

[0004]

However, in the case of such a conventional joint (a), as is apparent from FIGS. 7 and 8, the shaft screw is used to arbitrarily change the bending angle and the bending direction. There are problems that two axes of (H) and the joint (K) are required, the number of parts is large, and the cost is high.

Further, every time the bending angle is adjusted, a very troublesome work such as loosening and re-tightening the shaft screw (H) of the movable part (F) is required, and the angle can be easily adjusted. could not. Furthermore, the conventional joint (a) has a problem that it is difficult to form a shape having a feeling of unity such as a handrail or a fence body, and many of them are unfavorable in appearance.

Therefore, the invention of this application has been made in view of the circumstances as described above, and has a small number of parts and is inexpensive, and the bending angle and the bending direction can be easily and arbitrarily adjusted. The purpose is to provide a new joint structure for the part.

[0007]

Means for Solving the Problems The invention of the present application is, in order to solve the above-mentioned problems, a structure of a joint for connecting a plurality of head portions at arbitrary angles in the longitudinal direction, and at the end portion of the head portion. It has an end cap to be mounted, a bendable shaft member connecting the headstock part through the end cap, and a joint member into which the shaft member is inserted. The joint member has an insertion hole for the shaft member and this insertion hole. And a groove portion connected to each other is formed, the groove portion has a plane angle at which the shaft member is bent at a predetermined angle, both ends of the shaft member are fixed to the end caps, and the joint member and the end cap are in contact with each other. A joint structure for a head section is provided.

Further, the invention of this application is characterized in that, in the above joint structure, the joint member is a substantially spherical body, and the joint member has a groove formed on the circumferential surface of the groove portion plane. That the groove portion of the joint member has a substantially ¼ fan-shaped cross section, and that the groove portion of the joint member has a substantially semicircular cross section, The preferred embodiment is that the material is made of stainless steel, and the shaft material is Sungiri bolt.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in more detail with reference to the accompanying drawings.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1, 2 and 3 exemplify a joint structure of a head section which is an embodiment of the present invention. FIG. 1 is a perspective view of essential parts, FIG. 2 is a front view and FIG. 3 is a plan view.
In the joint structure of the head section of the present invention illustrated in FIGS. 1, 2, and 3, the end cap (2) made of aluminum die-cast or resin has the fixture (21) and the fixing screw (22). Is attached to the end of the headstock part (1) such as a handrail or a fence body, and the shaft material (3) is connected to the headboard part (1) via the end cap (2).
Is fixed to the end cap (2), and the joint member (4) through which the shaft member (3) is inserted is in contact with the end cap (2).

To further explain, the shaft member (3) is a bendable stainless steel Sungiri bolt, and both ends thereof are fixed to the end cap (2) by screws (31). Of course, as the shaft member (3), for example, a stainless steel shaft may be used, and in the case of the stainless steel shaft, it is fixed by being caulked to the end cap (3) by a caulking tool or the like.

Further, FIGS. 4A, 4B and 4C respectively show
It is the horizontal sectional view, front view, and side view which illustrated the structure of the joint member (4). This FIG. 4 (a) (b)
As shown in (c), the joint member (4) is formed with an insertion hole (41) through which the shaft member (3) as described above is inserted at a substantially radial position thereof.
A groove portion (42) having a substantially 1/4 fan-shaped cross section which is connected to the end portion of 1) is formed.

The groove portion (42) has a plane angle at which the shaft member (3) is bent at a predetermined angle, that is, approximately 1/4 in this case.
It has a fan-shaped central angle of about 90 degrees, and as shown in FIG. 3, bends the shaft member (3) at a predetermined angle limited by the plane angle of about 90 degrees of this groove (42). Thus, each head part (1) can be connected at its predetermined angle. In addition, due to the approximately 1/4 fan-shaped cross section,
It becomes difficult to see the shaft member (3) from the front direction.

Further, the shape of the joint member (4) is preferably substantially spherical, and since the joint member (4) has a spherical shape, the shaft member (3) is provided with a groove (42) as shown in FIG. 3, for example. ), The distance between the contact points of the joint member (4) and the end cap (2) and the center of the joint member (4) is always kept at a constant length when bent at a plane angle of , In what position Kasaki part (1)
Even if they are connected together, no gap is created between the joint member (4) and the end cap (2), which is preferable in terms of appearance and the risk of pinching a finger or the like is also prevented.

Further, the joint member (4) includes
A groove (43) is formed on the peripheral surface of the plane where the groove (42) exists, and the groove (43) causes the contact point between the joint member (4) and the end cap (2) to be 2 instead of 1. The two-point contact increases the strength of the joint structure. Of course, the shape of the joint member (4) does not have to be a perfect sphere, for example, the head part (1).
It may be a substantially spherical body having an elliptical cross-section corresponding to the above shape.

The insertion hole (41) and the groove portion (42) formed in the joint member (4) can also have various shapes corresponding to the desired bending angle of the headstock portion (1), for example. The shapes illustrated in FIGS. 5A, 5B, and 5C are also one preferable shape. This Figure 5
The groove portion (42) shown in (a), (b) and (c) is an insertion hole (41) formed at a substantially radial position of the joint member (4).
Since the groove portion (42) having such a shape has a wider plane angle, the range of the bending angle of the shaft member (3) is It becomes very large, and the bending angle of each head part (1) can be adjusted more freely and easily and connected at a predetermined angle.

In the case of connecting a plurality of headstock parts (1) with such a joint structure of the present invention, as shown in FIG. 6, first, the joint member (4) is connected in the direction of connecting the headboard parts (1), In other words, according to the bending direction of the shaft material (3),
The shaft member (41) is rotated, and then the shaft member (41) is bent according to the bending angle at which the head part (1) is connected. Therefore, in the joint structure of the present invention, only the shaft member (3) inserted through the joint member (4) functions as a shaft for changing the bending direction and the bending angle, and therefore, as shown in FIG. Compared with the conventional joint (a) that requires two shafts, the joint structure of the present invention, which requires only one shaft, has a smaller number of parts, and can reduce the investment for manufacturing and construction. It is possible to secure higher strength than the strength of a small shaft screw (K) as in the past.

Of course, the present invention is not limited to the above examples, and it goes without saying that various details can be made.

[0019]

As described in detail above, according to the present invention, a head part having a shape that is preferable in appearance, a small number of parts, and a low cost, and a bending angle and a bending direction can be easily and arbitrarily adjusted. A new joint structure is provided.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part illustrating a joint structure of a head part according to an embodiment of the present invention.

FIG. 2 is a side view illustrating the joint structure illustrated in FIG.

FIG. 3 is a plan view illustrating the joint structure illustrated in FIG. 1.

4A, 4B, and 4C are a cross-sectional view, a front view, and a side view showing an example of a joint member, respectively.

5A, 5B, and 5C are a sectional view, a front view, and a side view, respectively, showing another example of the joint member.

FIG. 6 is a perspective view showing an example of a joint structure of a head section of the present invention.

FIG. 7 is an exploded perspective view illustrating a conventional joint structure.

FIG. 8 is an exploded plan view illustrating a conventional joint structure.

9 is a front view showing an example of a handrail for stairs using the conventional joint structure of FIG. 7. FIG.

[Explanation of symbols]

1 Kasaki part 2 End cap 21 Fixture 22 fixing screw 3 shaft material 31 screws 4 joint members 41 insertion hole 42 groove 43 groove

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeyuki Ueda 1048, Kadoma, Kadoma City, Osaka Prefecture, Matsushita Electric Works, Ltd. (72) Tomio Kobayashi, 1048, Kadoma, Kadoma City, Osaka, Matsushita Electric Works, Ltd. ( 72) Inventor Hiroki Fujisaku 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works, Ltd. (58) Fields investigated (Int.Cl. ⁷ , DB name) E04F 11/18

Claims (7)

(57) [Claims] 1. A structure of a joint for connecting a plurality of headstocks at arbitrary angles in the longitudinal direction, wherein an end cap attached to an end of the headwear and a bendable body for connecting the headstocks via the end caps. It has a shaft member and a joint member through which the shaft member is inserted, and the joint member is formed with an insertion hole for the shaft member and a groove portion connected to the insertion hole, and the shaft member is bent at a predetermined angle in the groove portion. The joint structure of the head section is characterized in that both ends of the shaft member are fixed to the end caps, and the joint member and the end caps are in contact with each other. 2. The joint structure of a head section according to claim 1, wherein the joint member is a substantially spherical body. 3. The joint structure of a head section according to claim 1, wherein the joint member has a groove formed on the peripheral surface of the groove plane. 4. The groove of the joint member has a cross section of approximately 1/4.
The joint structure of the head section according to any one of claims 1 to 3, which has a fan shape. 5. The joint structure for a head section according to claim 1, wherein the groove portion of the joint member has a substantially semicircular cross section. 6. The joint structure for the head section according to claim 1, wherein the shaft member is made of stainless steel. 7. The joint structure of the head section according to claim 6, wherein the shaft member is a Sungiri bolt.