JPH11159098A - Connecting device for handrail bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect even a bent and noncircular handrail bar, and reduce an incongruous in a joint part, and improve the degree of freedom in design, and facilitate a joining process to improve workability. SOLUTION: Both the ends of a short pillar-shaped joint member 10 are formed rectangularly to an axis. A two stepped hole 12 which has large and small diameters and pierces from one end to the other end is formed on the axis. The head of a wood screw 13 inserted from the side of the large diameter hole engages with the shoulder of the small diameter hole 12a. Its tip part is protruded from the end face of the joint member 10 and made rotatable around the axis. In the large diameter hole part, a nut 15 is buried and fixed to the joint member 10 so as to be impossible in rotation and extraction. An internal thread hole of the nut 15 is formed in such a diameter as a screw-driver for twisting the wood screw 13 may be inserted. An external thread bar 18 which has a thread part 18a to be able to screw with the nut 15 in one end part and is formed into a wood screw part 18b at the other end is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a connecting member used for a wooden handrail bar.

[0002]

2. Description of the Related Art Conventionally, this type of connecting member is made of metal as shown in FIG. 5, and a connecting member of a wooden round bar is known. If the outline of the structure of this prior art is shown roughly, a joint member or a joint member is roughly divided into four members, and a pair of female screw disks 3 of mutually opposite screws to be attached to the joint end of the handrail bar B0 having a round cross section. And a handle disk 2 and a pair of externally screwed male screws 1 attached to the center portion thereof. First, the female screw disk 3 is attached to the joining end of the round bar handrail B0 to be joined with four fixed wood screws 18. Fix each, and penetrate the root of the opposite male screw 1 in the center of both sides of the handle board 2,
The handlebars 2 are screwed to each other and clamped and fixed.
Next, the round bar B0 to which the female screw disk 3 is to be connected is positioned on both sides of the handle panel with the pair of male screws 1 and the pair of male screws 1 is screwed into the female screw 5 of the female screw disk 3, There is a commercially available one in which the handle board 2 is rotated in the tightening direction to draw and tighten both round bar handrails B0 and to join the two round bar handrails B0 via a joint member.

The above-mentioned prior art is entirely made of metal, and the joint member is also a pair of female screw disk 3 and each member of the handle disk 2 exposed to the outside. Since the material is completely different from B0, these contrasts are strong and uncomfortable, and the design of this joining member places some restrictions on the design of other woody parts. Further, since the end surface of the joint member is circular, objects having a sectional shape other than the round bar handrail B0 cannot be smoothly joined.

[0004]

SUMMARY OF THE INVENTION The present invention provides a market for connecting two handrail bars, which can be easily joined without rotating the handrail bar around its axis. . In addition, the present invention mainly uses a wooden joint member, and the connection portion is less uncomfortable with other handrail bars,
This is for improving the degree of freedom in design. Another problem to be solved is that even if the processing of the end portion of the handrail bar to be connected is not accurately cut, a gap is not visible from the outside so that the joint portion is well-shaped. In addition, the connection part emits fluorescent light for a while after the light is turned off, and its existence is clarified, thereby assuring pedestrian safety.

[0005]

In order to solve the above-mentioned problems, in the present invention, both ends of a short columnar joint member are formed at right angles to an axis thereof, and extend from one end to the other end on the axis. A two-step hole with a large diameter and a small diameter is formed to penetrate, the head of the wood screw inserted from the large diameter part side engages with the shoulder of the small diameter hole part, and the tip part is from the end face of the joint member. It protrudes so as to be rotatable around the axis, and the nut is rotatable from the end face of the large-diameter hole portion and is fixedly embedded in the joint member so that it cannot be removed.The female screw hole of this nut is inserted by a screwdriver that twists the wood screw. Possible diameter,
Furthermore, it has a screw portion that can be screwed at one end with the nut,
A handrail bar connecting device is provided with a male screw bar having a wood screw portion at the other end.

According to another aspect of the present invention, a joint member of the handrail bar connecting device has an outer diameter slightly larger than that of a handrail bar to be joined, and recessed seats are formed at both end surfaces. In some cases, the recess on the nut side is deeper than the other, and the depth is 1/6 to 1/2 of the diameter.

According to another aspect of the present invention, there is provided a railing bar connecting device, wherein the joint member of the handrail bar is provided with the hollow seat at an end of the joint member having the wood screw, and the other end of the joint member having a nut. Is a plane perpendicular to the axis, the outer end surface of the nut is located more than the end surface of the joint member by the maximum cutting allowance, and one end of a ring-shaped auxiliary joint member separate from the joint member is connected to the joint. A second recess seat that can be fitted is formed outside the nut side of the member, and a third recess seat that fits with the end of the handrail to be joined is formed at the other end. It is preferable that a center hole of the auxiliary joint member is formed as the through hole of the male screw rod.

According to another aspect of the present invention, a fluorescent material is applied to at least the surface of the joint member of the handrail bar connecting device by a kind of means of application, impregnation, and kneading. In some cases.

In order to connect two handrail bars using the joining apparatus according to the first aspect of the present invention, first, a joint member is attached to the center of one end of one handrail bar by using a wood screw in the axial direction. The wood screw is attached to one end of the handrail bar, with or without drilling a pilot hole. That is, the driver is inserted through the female screw hole from the nut side, is engaged with the head of the wood screw and is screwed in, so that the end surface of the joint member and the end surface of the handrail bar are brought into close contact with each other. In this state, the joint member is rotatable around the wood screw as a rotation axis with respect to the handrail bar and the wood screw. Next, a wood screw lower hole is similarly drilled at the end of the second handrail bar to be joined, or a wooden screw portion of the male screw bar is screwed into this hole without drilling. Alternatively, a screw portion other than the wood screw portion of the male screw bar is screwed into the female screw portion of the nut, so that the wood screw portion protrudes from the end face on the nut side.

Next, the second handrail bar and the joint member are screwed together. That is, after the male screw bar is screwed into the second handrail bar in advance, the nut is screwed into the nut fixed to the joint member and the screw portion protruding from the second handrail bar, and the joint member is moved along its axis. The second handrail bar is pulled into close contact with the joint member by being rotated and screwed around. On the other hand, when the male screw rod is screwed into the joint member side in advance, the wood screw portion of the male screw rod protruding from the male screw rod is screwed into the screw hole on the axis of the second handrail bar or the second handrail bar. The joint member is similarly rotated around the axis and screwed in.

When the two handrail bars are completely connected in this way, the joint member is sandwiched between the two handrail bars,
Does not rotate unnecessarily. Normally, a woodworking adhesive is applied to the joint surface immediately before tightening, so that a particularly strong external joint is obtained.
When the outer diameter of the joint member is thicker than that of the handrail bar and is made of wood, the outer diameter of the joint member and the handrail bar may be flush with each other by grinding with a plane or a file.
In particular, if the end faces of the two handrail bars to be joined are accurately finished at right angles to the axis, even if the outer periphery of the joint member is finished flush with the outer peripheral surfaces of these handrail bars, there will be no gap between the joints. Without being connected, it is connected smoothly.

In the second aspect of the present invention, a concave seat is formed on both end surfaces of the joint member, and the concave seat on the nut side is deeper than the other, and the depth is 1/6 to 1 of the diameter.
In the case of joining two handrail bars, the joining procedure is the same as that of the first aspect of the present invention.
Since the ends of the two handrail bars are inserted into the recesses, the ends of the two handrail bars are hidden in the end even if the finishing accuracy of the ends of the two handrail bars is not high. Even if it is not visible, the workability of mounting is greatly improved. Also, even if any handrail bar is cut short by mistake, if the error is less than 1/6 to 1/2 of the diameter, even if there is a gap between the handrail bar and the end surface of the joint member. These gaps are also hidden in the hollow seats, and even if a suitable donut-shaped spacer is sandwiched in these gaps, they are also hidden, and the workability of mounting is good.

[0013] According to the third aspect of the invention, the first aspect is provided.
Prior to the installation setup described, when the dimension between the two handrail bars is narrow, if the dimensional difference is within the maximum cutting allowance dimension on the nut side of the joint member, this portion may be cut and adjusted. In addition, the shaved part will be hidden in the sub-joint member, so not much accuracy is required,
Good workability. Also, if the depth of the second concave seat to be fitted to the joint member of the sub-joint member is made deep, even when the distance between the two handrail bars is slightly wide, the gap is hidden by the sub-joint member. And in this case,
Even if a donut-shaped spacer is interposed between the joint member and the sub joint member, the appearance is improved without being seen from the outside.

The operation of the invention according to claim 4 is the same as that of claim 1,
In addition to the effects of the invention described in 2 or 3, since at least the surface layer of the joint member is coated or kneaded with a fluorescent material,
The handrail bar using this emits fluorescence for a short time after being turned off, and serves as a mark to facilitate the movement of the user to the target place even in the dark.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 and FIG. 3 show an embodiment including the first and second aspects of the present invention. In these figures, 1
Reference numeral 0 denotes a joint member, which is usually made of tough wood, and has a short column shape whose outer diameter is larger than the outer diameter of the handrail bars B1 and B2 to be joined by 1.5 to 5 mm in radius. Are formed with recessed seats 11a and 11b into which the handrail bars B1 and B2 can be fitted. The bottom surfaces of the concave seats 11a and 11b, which are the end surfaces of the joint member 10, are both formed in a plane perpendicular to the axis.
From the 1bb side to the other end, a large-diameter and two-diameter two-stage hole 12 is formed to penetrate, and the small-diameter hole portion 12a has a dimension in which the wood screw 13 can be inserted exactly and can freely rotate around the axis.
The head part 1 of the wood screw is attached to the shoulder part 12c with the large diameter part 12b.
3a is a dimension to be engaged. The shoulder portion 12c may be fitted with a metal washer 14.

Reference numeral 15 denotes a metal nut, which is embedded in the large-diameter portion 12b from the side of the recess 11b, and is attached to the joint member 10 so as not to be able to be swiveled and removed. It is. In the illustrated embodiment, the outer peripheral surface of the nut 15 is formed with a male screw (a kind of tapping screw) 16 having a discontinuous male thread (see FIG. 3), and the female screw 15a has a hexagonal end. Is formed. The diameter of the female screw 15a of the nut 15 is set so that a screwdriver (not shown) for twisting the wood screw 13 can be inserted.

The above-described recess seats 11a and 11b may be recesses having exactly the same size as each other, but in the illustrated example, the recess depth of the recess seat 11b is deep, and is 1/6 to 1 of its diameter.
/ 2, and a donut-shaped wooden spacer 17 for dimension adjustment is detachably provided in the recessed seat 11b. Reference numeral 18 denotes a male screw bar, one end of which is provided with a screw portion 18a which can be screwed with the nut 15, and the other end of which is a wood screw 13
And the second handrail bar B
It has enough length to be screwed with 2. A screwdriver 18c of + or-is formed at one end of the screw portion 18a. The dimensions of the wood screw 13 and the wood screw portion 18b are not particularly limited, but the screw thread diameter is 3 to 5 mm, and the length screwed into the first and second handrail bars B1, B2 is 25 mm.
It is sufficient if it is 35 mm or less. Wood screw 13 and screw part 1
It is preferable that the twisting directions of 8a and 18b are opposite to each other, but the same direction does not matter in practice.

Operation of Embodiment 1 First, to assemble the joining device, the washer 14 is inserted from the side of the large-diameter hole portion 12b of the two-step hole 12 and is positioned at the shoulder 12c of the two-step hole 12. Next, the wood screw 13 is similarly connected to the large diameter 12.
The wood screw 13 is inserted into the small-diameter hole portion 12a from the side b, and protrudes from the hollow seat 11a which is one end of the joint member. Next, the nut 15 is screwed into the large-diameter hole portion 12b, and the nut 15 is screwed into the large-diameter hole portion 12b using a spanner hook 15b. It is screwed into the inner peripheral surface of the radial hole portion 12b while carving a female screw,
The nut 15 is completely embedded in the joint member. In this state, the nut cannot be rotated and removed from the joint member 10 unless a wrench is used. The wood screw 13 is freely rotatable in the small-diameter hole portion 12a. Until this state, it is assembled in a factory in advance. After the nut 15 is screwed into the large diameter hole 12b of the joint member 10, the wood screw 13 does not fall out of the small diameter hole 12a.

Next, at the work site, a wood screw 13 and a screw pilot hole 20 slightly smaller than the diameter of the screw of the wood screw portion 18b of the wood screw 13 and the screw rod are provided at the center of the end faces of the handrail bars B1 and B2 to be joined. Or drill with a cone. Next, a wood screw of the joint member 10 is inserted into the prepared screw hole 20 of the first handrail bar B1, and a female screw portion 15a of the nut 15 is passed through a screwdriver to engage with the head 13a of the wood screw 13 and torsion. The end surface of the joint member 10 which is the bottom of the concave seat 11a of the member 10 is a first handrail bar B1.
Adhere to In this state, the joint member 10 can freely rotate with respect to the first handrail bar B1 about the wood screw 13 as a rotation axis.

Next, the wood screw portion 18b of the male screw rod 18 is
Screwed into the screw hole 20 of the handrail bar B2, a driver is hooked on a screwdriver hook 18c, and the wood screw portion 18b is completely screwed into the second handrail bar B2. When the spacer 17 is used, the second handrail bar B2 is inserted into the recess 11b of the joint member 10 before the male screw bar 18 is screwed into the second handrail bar B2, and the second handrail bar is used. The position of B2 is measured, and if the second handrail bar B2 is long, this dimension is cut short. If it is delicately long, the thickness of the spacer 17 is thinned with a plane or the like. The screw bar 18 is screwed into the handrail bar B1, the spacer 17 is fitted in the recess 11b, and finally the screw portion 18a of the male screw bar 18 and the nut 15 are aligned. When the joint member 10 is rotated in the screwing direction and the male screw portion 18a and the nut 15 are screwed together, and further screwed in, the second handrail bar B2 is completely recessed.
1b, is brought into close contact with its bottom surface,
And the second handrail bars B1 and B2 are completely connected.

At this time, loosening of the wood screw 13 and loosening of the connection between the first handrail bar B1 and the joint member 10 are inevitable. Are opposite to each other, even if the joint member 10 is rotated in the screwing direction of the screw portion 18a and the wood screw portion 18b, torque is applied only in the tightening direction of the wood screw 13, and the wood screw 13 is not loosened at all. In the above-described embodiment, the joint member provided with the dent seats 11a and 11b is used. Therefore, the joint between the joint member 10 and the first and second handrail bars B1 and B2 is completely formed by these dent seats. It is hidden inside 11a and 11b and becomes invisible from outside.

The aforementioned first and second handrail bars B1 and B
In the case where the end surface of the joint member 10 is accurately formed at a right angle to the axis, the outer peripheral surface of the joint member 10 protruding from the first and second handrail bars B1 and B2 is planarized or appropriately ground. In some cases, the surface may be cut or ground by means. Depression seats 11a, 11 at both ends of joint member 10
Claim 1 wherein b is both shallow or equal in depth.
It is an embodiment of the described invention.

Embodiment 2 This embodiment includes the invention described in claim 3, and is shown in FIG. The same reference numerals as those in the first embodiment denote the same constituent parts or components, and a description thereof will not be repeated. The difference from the first embodiment is that there is no hollow 11b at the end of the joint member 10 on the side where the nut 15 is buried, and the outer diameter of the half near the nut 15 is approximately the first diameter.
And the outer diameters of the second handrail bars B1 and B2. The outer end of the nut 15 is buried deeper than the end surface of the joint member 1, and the dimension from the nut 15 to the end surface of the joint member is a cutting allowance for adjusting the length of the joint member. In the embodiment, the outer diameter of the joint member at this portion is about 1/10 to 1/4, but this value is not limited. The point is that the size is the maximum cutting allowance d.

Reference numeral 21 denotes a sub-joint member, which is also made of the same material as that of the joint member 10 and whose outer diameter is substantially equal to the outer diameter of the joint member 10 on the side where the wood screw 13 projects. On both end surfaces, a second hollow seat 22 that fits about half outside the nut 15 of the joint member 10 and a third hollow seat 23 that fits with the second handrail bar B2 are formed. is there. The depth of the second recess 22 is 1/6 to 1/2 of its inner diameter, and the depth of the third recess 23 is 1.5 to 5 mm. A male screw rod through hole 24 is formed on the center axis of the sub joint member 21, and the sub joint member 21 has a ring shape as a whole. In this embodiment, the second recess 22 is replaced with the other recesses 11a and 23a.
Although the deeper one is illustrated, all the concave seats 11a,
The second recessed seat 22 and the third recessed seat 23 are also shallower embodiments of the invention according to claim 3 and claim 1.
This is also an embodiment of the described invention.

Operation of Embodiment 2 First, similarly to Embodiment 1, the joint member 10 is
To the handrail bar B1. Next, the second handrail bar B2
The sub-joint member 21 is fitted to the end of the joint member 10, the joint member 10 is fitted to this, and the entire length is measured. When the joint member 10 is slightly longer, the cutting of the joint member 10 is adjusted to be slightly shorter within the range of the maximum cutting allowance dimension d without the nut 15. If it is slightly shorter, the spacer 17 is fitted into the second recess 22 as in the first embodiment, and the thickness or the dimension d corresponding to the maximum cutting allowance is appropriately cut and the length is adjusted. The second handrail bar B2 is screwed into the end thereof, the sub-joint member 21 and the joint member 10 are sequentially inserted, and the joint member is rotated around the wood screw 13 with respect to the first and second handrail members B1 and B2. Then, the joint member and the second handrail bar B2 are firmly adhered to each other with the auxiliary joint member interposed therebetween. Also in this case, the recess 11a is provided between the first handrail member B1 and the joint member 10.
The joint between the second handrail member B2 and the auxiliary joint member 21 is located in the third recess 23, and the joint member 10
And the joint between the sub joint member 21 is hidden in the second recess 22 and is not visible from the outside. Even if the spacer 17 is used in the second recess 22, they are not visible from the outside and are assembled in a good manner. Can be Nut 15 of Embodiment 2
The outer end of the joint member 10 and the end surface of the joint member 10 are substantially flush with each other, and in this case, the sub joint member 21 is merely an additional requirement. In the first and second embodiments, the spacer 17 does not necessarily need to be provided in advance, and may be processed on site by using a piece of plywood or other plate material. Preferred above.

Third Embodiment The outer periphery of the joint member 10 according to the first or second embodiment is obtained by applying or impregnating a paint containing a fluorescent material. In this embodiment, since the light energy is stored while the electric light is on, and the light is emitted for a while after the light is turned off, the handrail bars B1 and B1 using this embodiment are used.
In 2, the handrail bar B is used even after the lights are turned off, such as in the corridor.
The positions of 1 and B2 can be determined and it is safe. In each of the above-described embodiments, the joint member 10 is made of wood. However, the use of a grindable plastic molded product is also included in the embodiments of the present invention. In the case where the joint member 10 is a plastic molded product, the fluorescent material may be kneaded before molding or may be adhered during molding, which is included in the embodiment of the present invention.

[0027]

According to the first aspect of the present invention, since the above-mentioned structure is constructed and operates as described above, the assembling is easy and the joint member can be rotated around the axis when assembled to the handrail bar to be connected. The bars can be connected without rotating them around the axis, and the handrail bars are not limited to straight lines, and can be used for joining bent handrail bars. In addition, it is not limited to a round cross-section, it can also be connected to non-circular ellipses and other irregular shapes.If the outer peripheral surface is cut off as necessary, it can be used even with the handrail bar, The degree of freedom in the design of handrail bars is improved, and the smooth joining of handrail bars is suitable for joining handrail bars in facilities for the elderly and hospital rehabilitation centers.

According to the second aspect of the present invention, since the concave seats are formed on both end surfaces of the joint member, even if the finishing accuracy of the end portion of the handrail bar to be joined is not so high,
The joints at these ends are hidden in the hollow seats, and the joining operation can be completed in a short time in a good manner, and the workability is extremely good. In particular, the depth of one of the concave seats is deep, so that the axial error of the joint can be absorbed within this depth range. It becomes a good-looking joint after joining.

[0029] According to the third aspect of the present invention, the first aspect is provided.
In addition to the effects of the invention described above, the configuration and operation as described above make it easier to adjust the length of the joining portion and easily form a joint having a good appearance.

According to the fourth aspect of the present invention, since the fluorescent material is used, light is emitted for a while even after the light is turned off, and the position of the handrail bar can be easily confirmed, which is safe.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view of a first embodiment.

FIG. 2 is an exploded partially longitudinal side view of FIG. 1;

FIG. 3 is a longitudinal side view of Embodiments 2 and 3.

FIG. 4 is a front view of a nut.

FIG. 5 is a longitudinal sectional side view of the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Joint member 11a, 11b Depression seat 12 Two-step hole 13 Wood screw 18 Male screw bar 18a Screw part 18b Wood screw part B1 First handrail bar B2 Second handrail bar

Claims (4)

[Claims] An end of a short-column-shaped joint member having the same or slightly larger diameter as a handrail bar to be used is formed at right angles to its axis. A small-diameter two-stage hole is formed to penetrate, and the head of the wood screw inserted from the large-diameter portion engages with the shoulder of the small-diameter hole portion, and its tip projects from the end surface of the joint member. By rotating the nut around the axis, the nut rotates from the end face of the large-diameter hole and is fixed to the joint member so that it cannot be removed.The female screw hole of this nut can be inserted by a screwdriver that twists the wood screw. A handrail bar connection device having a male threaded rod having a screw diameter capable of being screwed at one end with the nut and having a wood thread at the other end. 2. The outer diameter of the joint member is slightly larger than that of the handrail bar to be joined, and a concave seat is formed on both end surfaces, and the concave seat on the nut side is deeper than the other, and has a depth of one diameter. /
2. The handrail bar connecting device according to claim 1, wherein the ratio is 6 to 1/2. 3. The end of the joint member having the wood screw is provided with the recess seat, the other nut is provided with a flat surface perpendicular to the axis, and the outer end surface of the nut is provided with the end surface of the joint member. Thus, a second recess seat that is located at the back of the maximum cutting allowance dimension, and one end of a ring-shaped sub joint member separate from the joint member can be fitted to the outside of the joint member on the nut side. The third end of the handrail to be joined is formed at the other end with a third recess seat, and the center hole of the ring-shaped sub joint member is the through hole of the male screw rod. The handrail bar connecting device according to claim 1, characterized in that: 4. A handrail bar according to claim 1, wherein at least a surface of said joint member is integrated with a fluorescent material by a kind of means of application, impregnation and kneading. Connection device.