JP2659682B2 - Handrail connection member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handrail connecting member for adding a handrail of a predetermined length or shape to a long handrail.

[0002]

2. Description of the Related Art A handrail connecting member as shown in FIGS. 8 and 9 is conventionally known. The handrail connecting member 10 includes a first connecting member 20 fixed to an end surface S of one handrail T facing the other handrail T by screwing, and the other handrail T
, And an operation disk 40 having a slightly larger diameter than both connecting the first connection member 20 and the second connection member 30 to each other.

At the center of the surface of the first connecting member 20, a screw shaft 201 having a male screw is protruded, and at the center of the second connecting member 30, the screw shaft 201 is screwed. An annular screw member 301 having a female screw to be screwed is provided.

[0004] The screw member 301 is connected to the second connecting member 30.
Since the screw shaft 201 is provided so as to be rotatable around the axis and not to fall off from the main body, the screw member 201 is fixed to the screw hole of the screw member 301 in a state where the screw shaft 201 is opposed to the screw hole. When the screw shaft 201 is rotated in the direction, the screw shaft 201 enters the screw hole of the screw member 301 so that one handrail T and the other handrail T can be connected to each other.

A member for rotating the screwing member 301 is the operation disk 40, which is provided with an insertion hole 401 at the center thereof for inserting the screw shaft 201 and an inner periphery of the insertion hole 401. A plurality of locking recesses 402 are radially formed in a part of the surface. On the other hand, the surface portion of the screwing member 301 is formed so as to protrude from the surface of the second connecting member 30, and the surface of the screwing member 301 corresponds to the locking concave portion 402 of the insertion hole 401 of the operation disk 40. Recess 402
Is provided with a locking projection 302 that fits into the projection.

[0006] Then, the engaging concave portion 402 of the insertion hole 401 of the operating disk 40 is fitted to the engaging convex portion 302 of the screwing member 301 to operate the second connecting member 30 and the operating disk 40 in close contact. When the disk 40 is rotated around the axis, the screw member 301 also rotates around the axis. Therefore, in the above-mentioned close contact state between the second connection member 30 and the operation disk 40, the screw shaft 201
When the operation disk 40 is rotated about the axis in a predetermined direction, the screw member 301 rotates, and the screw shaft 201 enters the screw hole of the screw member 301 with this rotation. Finally, as shown in FIG.
0, the operation disk 40 and the first connection member 20 are brought into close contact with each other, and the left and right handrails T are connected.

[0007]

By the way, in the conventional handrail connecting member 10 as described above, the screw shaft 201 is lengthened to improve the connection between the left and right handrails T, and the left and right handrails are connected. In a state where T is connected, the second connecting member 3
The distal end of the screw shaft 201 is fitted into a locking hole T1 formed in the center of the handrail T on the side where 0 is attached.

Therefore, when connecting the left and right handrails T by applying the conventional handrail connecting member 10, a locking hole T1 must be formed in the opposite end surface S of one handrail T in advance. Such drilling is often performed, for example, at a construction site where it is usually necessary to connect a handrail T, and is an extremely troublesome operation on a busy site. For example, when handrails T need to be perforated, a lot of manpower and time are consumed, and this has been a bottleneck in making the on-site work proceed smoothly.

[0009] In some cases, a locking hole T1 is drilled in advance at the opposing end surface S of the handrail T at the factory. In this case, the number of manufacturing steps for the handrail T increases by one and the manufacturing cost increases. Contributed to the increase.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and there is no need to form a locking hole in the end surface of the handrail, and therefore, the connection operation of the handrail can be easily performed. It is another object of the present invention to provide a handrail connecting member that can reduce the manufacturing cost at the time of manufacturing a handrail.

[0011]

A handrail connecting member according to a first aspect of the present invention comprises a first connecting member fixed to one opposing end face of two handrails to be connected and a handrail connecting member fixed to the other opposing end face. A handrail connection member comprising a second connection member fixed to the handrail connection member, wherein the first connection member rotates around an axis around the disc-shaped fixing piece fixed to one of the opposed end faces; And an annular operating member having a diameter larger than that of the disk-shaped fixing piece, and a threaded recess in which a female screw is screwed is formed on an inner peripheral surface of the annular operating member. The two connection members are characterized in that a disk-shaped base fixed to the other facing end surface and a screwing projection in which a male screw screwed into the screwing recess is screwed are formed on the disk-shaped base. It is assumed that.

A handrail connecting member according to a second aspect of the present invention is the handrail connecting member according to the first aspect, wherein the disc-shaped fixing piece has a first connection to one opposed end face of the two handrails. An insertion hole for locking means for mounting a member is formed, and an insertion hole for locking means for mounting a second connection member is formed on the other opposed end surface of the disc-shaped base. It is characterized by having.

A handrail connecting member according to a third aspect of the present invention is the handrail connecting member according to the second aspect, wherein an annular protrusion protruding toward the center is provided at a base end side of the threaded concave portion of the annular operating member. An edge portion is provided, and a presser disc that slidably holds the annular convex edge portion relative to the disc-shaped fixing piece is fixed to the disc-shaped fixed piece, and the presser disc has the disc-shaped fixed piece. An insertion hole corresponding to the insertion hole is provided.

A handrail connecting member according to a fourth aspect of the present invention is the handrail connecting member according to the second aspect, wherein a base end of the threaded concave portion of the annular operating member is integrally formed with the annular operating member. A wall is formed, and the base end wall and the disc-shaped fixing piece are connected to each other via a central axis so as to be relatively rotatable around an axis, and the base end wall is locked to the insertion hole of the disc-shaped fixing piece. An insertion hole through which the head of the means can pass is formed.

A handrail connecting member according to a fifth aspect of the present invention is the handrail connecting member according to any one of the first to fourth aspects, wherein one or both of the first connecting member and the second connecting member are provided. Is made of metal or synthetic resin.

[0016]

According to the handrail connecting member of the first aspect,
By fixing the disc-shaped fixing piece to one of the opposite end faces of the two handrails to be connected, the first connection member is attached to the one handrail in a state where the annular operating member is rotatable around the axis, By fixing the disc-shaped base to the opposite end face of the other handrail, the second connecting member is in a state of being attached to the other handrail. Then, in a state where the first connection member is attached to one of the handrails, the annular operation member is rotatable around the axis, so that the screwing protrusion of the second connection member is screwed into the first connection member. The screwing between the screwing convex portion and the screwing concave portion proceeds by rotating the annular operation member around the axis, facing the mating concave portion, and finally the screwing of both is completed, and the two handrails are It is in a state of being securely connected to each other.

According to the handrail connecting member of the second aspect, since the disc-shaped fixing piece and the disc-shaped base are provided with insertion holes for locking means, the disc-shaped fixing piece and the disc-shaped base are provided. The disc-shaped fixing piece and the disc-shaped base can be easily handrailed by inserting a locking means such as a wood screw into the insertion hole and performing a fastening operation in a state where each of the disc-shaped fixing pieces is brought into contact with the facing end face for connection of the handrail. Can be fixed to the opposite end surfaces of the first and second members.

According to the handrail connecting member of the third aspect, an annular convex edge protruding toward the center is provided on the base end side of the threaded concave portion of the annular operating member. A holding disc that is slidably held between the disc-shaped fixing piece and the disc-shaped fixing piece is fixed to the disc-shaped fixing piece, and the holding disc has an insertion hole corresponding to the insertion hole of the disc-shaped fixing piece. If the first connecting member is fixed to the end face of the handrail by inserting a retaining means such as a wood screw into the insertion hole of the holding disc and the disc-shaped fixing piece, the annular convex edge portion becomes the holding disc and the disc-shaped fixing piece. It is slidable in the circumferential direction while being sandwiched. Therefore, the annular operation member can be rotated around the axis by pinching and operating the outer peripheral surface of the annular operation member with a finger.

According to the handrail connecting member of the fourth aspect, a base end wall is formed integrally with the annular operating member on the base end side of the threaded concave portion of the annular operating member, and the base end wall and the disk are formed. An insertion hole through which the head of the locking means corresponding to the insertion hole of the disk-shaped fixing piece can pass is formed in the base end wall so as to be able to pass through the center fixing shaft. Since it is provided, a locking means such as a wood screw is inserted into the insertion hole of the base end wall to pass through the head thereof, and further, the locking means is inserted into the insertion hole of the disc-shaped fixing piece so that the handrail is inserted. With the first connecting member fastened to the end face, the annular operating member is rotatable around the central axis.

According to the handrail connecting member according to the fifth aspect, since one or both of the first connecting member and the second connecting member are made of metal or synthetic resin, the handrail connecting member is made of a material. The two handrails can be reliably connected to each other.

[0021]

FIG. 1 is an exploded perspective view showing an example of a handrail connecting member according to the present invention, and FIG. 2 shows a state in which the handrail connecting member of FIG. 1 is assembled and attached to a handrail. It is a perspective view. FIG. 3 is a perspective view showing a state in which the left and right handrails are connected by a connection member. As shown in these figures, the handrail connecting member 1 is an end surface S of one (right side in the figure) of two handrails T to be connected.
, And a second connection member 3 attached to the end surface S of the other handrail T (left side in the figure).

The first connecting member 2 is provided with an end surface S of a handrail T.
Fixed piece 21 fixed to the disk and fixed piece 2
1 comprises an annular operating member 22 having a diameter larger than that of the disk-shaped fixing piece 21 rotatably mounted around the axis, and a holding disk 26 supporting the annular operating member 22.
A circular protruding surface portion 210 protruding toward the annular operating member 22 is formed on the disc-shaped fixing piece 21, and the first connection member 2 is fixed to the end surface S of the right handrail T on the protruding surface portion 210. Are formed at equal intervals in the circumferential direction. A plurality of caulking protrusions 21b for caulking the presser disk 26 are provided on the protruding surface 210 at equal intervals in the circumferential direction.

On the inner peripheral surface of the annular operating member 22, a threaded concave portion 24 in which a female screw 23 is screwed is formed. An annular convex edge 25 protruding toward the center is provided at a base end (right side in the drawing) of the screwing concave portion 24. The presser disc 26 is set to be slightly smaller than the inner diameter of the threaded recess 24, and is set to be larger than the inner diameter of the annular ridge 25. Accordingly, if the presser disc 26 is fitted into the threaded recess 24 from the distal end side (left side in the drawing), the presser disc 26 is formed from the base end side (right side in the drawing) of the screwed recess 24 by the annular convex edge 25. It is designed to prevent escape.

The presser disc 26 has the disc-shaped fixed piece 2
An insertion hole 26a corresponding to the first insertion hole 21a is formed, and a caulking hole 26 for fixing the presser disk 26 to the disc-shaped fixing piece 21 through the caulking protrusion 21b.
b is provided. In a state where the swaging protrusion 21b is fitted into the swaging hole 26b and the holding disc 26 is swaged to the disc-shaped fixing piece 21, the insertion hole 26a of the holding disc 26 and the insertion hole 21a of the disc-shaped fixing piece 21 correspond to each other. The position is set as follows.

The diameter of the protruding surface 210 of the disc-shaped fixing piece 21 is set slightly smaller than the inner diameter of the annular protruding edge 25 of the annular operating member 22. The dimension is set slightly larger than the thickness of the edge 25 in the axial direction. Therefore, in a state where the presser disc 26 is fitted into the screwing concave portion 24, the presser disc 26
Of the disc-shaped fixing piece 21 into the insertion hole 26a
Is inserted and caulked, so that the annular convex edge portion 25 is sandwiched between the edge portion of the holding disk 26 and the edge portion of the disk-shaped fixing piece 21, and is inserted into the annular locking groove 21 c formed therebetween. The annular operation member 22 and the disk-shaped fixing piece 21 are relatively rotatable around the axis, in a state of being slidably fitted in the circumferential direction.

As shown in FIGS. 2 and 4, the first connecting member 2 is connected to one handrail T (right side in the drawing) with a wood screw 4 as a locking means through insertion holes 26a and 21a. Attached to the end surface S of

On the other hand, the second connecting member 3 has a disk-shaped base portion 31 on the base end side (left side in the drawing) and a cylindrical screwing projection 33 protruding from the front end surface of the disk-shaped base portion 31. It is composed of On the outer peripheral surface of the screwing convex portion 33, a male screw 32 screwed with the female screw 23 screwed into the screwing concave portion 24 of the annular operating member 22 is screwed. The second connecting member 3 is provided with an insertion hole 31a that penetrates the disc-shaped base 31 and the screwing projection 33. The insertion hole 31a has a wood screw 4
And screwed into the end surface S of the other handrail T (left side in the drawing), the second connecting member 3 is fixed to the end surface S of the left handrail T as shown in FIGS. .

Therefore, the first connecting member 2 is provided on one end face S.
Is attached, and the other end surface S is provided with the second connecting member 3.
When connecting the two handrails T to which is fixed, the screwing convex portion 33 of the second connecting member 3 is pressed against the opening of the screwing concave portion 24 of the first connecting member 2, and the annular operating member 22 is moved. By rotating in a predetermined direction, the male screw 32 screwed on the outer peripheral surface of the screwing convex portion 33 is screwed with the female screw 23 screwed on the inner peripheral surface of the screwing concave portion 24 to form the screwing convex portion. 33 is a threaded recess 24
3 and FIG. 5 at the time when
As shown in (2), the two handrails T are connected to each other.

In the present embodiment, the first connecting member 2 and the second connecting member 3 are all made of metal, but the handrail connecting member 1 of the present invention comprises the first connecting member 2 and the second connecting member 3. It is not limited that the components are all made of metal, and some or all of these components may be made of synthetic resin.

In this embodiment, as shown in FIGS. 4, 5 and 7, the disc-shaped fixing piece 21 of the first metal fitting 2 is used.
A concave portion is formed on each back surface of the disc-shaped base portion 31 of the second metal fitting 3, and an end of the handrail T is fitted into the concave portion with its outer peripheral edge cut off. The concave portions are not limited to being formed on the back surfaces of the disc-shaped fixing piece 21 and the disc-shaped base 31. The back surfaces of the disc-shaped fixing piece 21 and the disc-shaped base 31 may be flat. Further, even if the disk-shaped fixing piece 2
Even if a concave portion is formed on the back surface of the disk-shaped base portion 1 and the disk-shaped base portion 31, it is not essential to cut off the end of the handrail T at the outer peripheral edge in order to fit into the concave portion. It is possible to fix the connection fitting 1 to the handrail T even if it is flat.

In the handrail connection fitting 1 shown in FIGS. 1 to 4, the holding disc 26 is fixed in a disc shape via the annular operation fitting 22 in advance to prevent loss and to reduce the number of parts to be assembled on site. The presser disc 26 is caulked to the piece 21, but the present invention is not limited to the presser disc 26 being caulked. In particular, the presser disc 26 is
In this connection, the wooden screw 4 is inserted into the insertion holes 26a and 21a and the holding disk 26 is fixed to the end face of the handrail T via the disk-shaped fixing piece 21 when the handrail is connected. It is possible.

FIG. 6 is an exploded perspective view showing a handrail connecting member according to another embodiment of the present invention, and FIG. 7 is a sectional view showing a state where the handrail to which the connecting member of FIG. 6 is applied is connected. It is.
As shown in these figures, the handrail connecting member 1a of this example
In the case of (1), a base end wall 25a is provided in the threaded concave portion 24 of the annular operation member 22 instead of the annular convex edge portion 25. A central hole 25 is formed at the center of the base end wall 25a.
b is provided.

On the other hand, a center hole 25 of the base end wall 25a is formed in the center of the disc-shaped fixing piece 21 toward the annular operating member 22.
A central shaft 21d that fits into the projection b is protruded. A screw hole 21e is screwed into the axis of the center shaft 21d. In addition, the same insertion hole 21a as the previous example is formed in the surface of the disc-shaped fixing piece 21, but the caulking projection 21b is not provided.

Accordingly, by inserting the center shaft 21d of the disc-shaped fixing piece 21 into the center hole 25b of the base end wall 25a, the annular operating member 22 becomes rotatable around the disc-shaped fixing piece 21. With the center shaft 21d fitted in the center hole 25b, a retaining screw 26a having a head having an outer diameter larger than the inner diameter of the center hole 25b is screwed into the screw hole 21e of the center shaft 21d.

Further, the disc-shaped fixing piece 2 is provided on the base end wall 25a.
1 is provided with an insertion hole 25c corresponding to the insertion hole 21a. The diameter of the insertion hole 25c is set to be larger than the diameter of the head of the wood screw 4. Therefore, the wood screw 4 is inserted into the insertion hole 25c formed in the base end wall 25a of the annular operation member 22 and the insertion hole 21a formed in the disc-shaped fixing piece 21 and screwed into the end face S of the handrail T. For example, as shown in FIG. 7, the disk-shaped fixing piece 21 is fixed to the handrail T while the head of the wood screw 4 passes through the insertion hole 25c and reaches the surface of the disk-shaped fixing piece 21. Disc-shaped fixing piece 2
1 is rotatable around the central axis 21d without being interfered by the wood screw 4.

In this example, the connection operation of the two handrails T is the same as in the previous example.

[0037]

As described above, in the handrail connecting member according to the first aspect of the present invention, the first connecting member has a disc-shaped fixing piece fixed to one of the opposed end faces, and the disc-shaped fixing piece has An annular operating member that is attached rotatably around the axis and has a diameter larger than the disc-shaped fixing piece, and a female thread is screwed into an inner peripheral surface of the annular operating member. The second connection member is formed, and a disk-shaped base fixed to the other facing end surface, and a screwing protrusion in which a male screw screwed into the screwing recess is formed in the disk-shaped base. It becomes.

Accordingly, by fixing the disc-shaped fixing piece to one of the two handrails to be connected to one of the opposite end faces, the first connecting member can be rotated by the first connecting member while the annular operating member is rotatable around the axis. The second connecting member is attached to the other handrail by fixing the disc-shaped base to the opposite end face of the other handrail.

In the state where the first connecting member is attached to one of the handrails, the annular operating member is rotatable around the axis. The screwing of the screwing convex portion and the screwing concave portion progresses by rotating the annular operating member about the axial center so as to face the screwing concave portion of the member, and finally the screwing of both is completed, and the two The handrails are securely connected to each other.

As described above, according to the handrail connecting member of the first aspect, the screwing convex portion is screwed into the screwing concave portion of the annular operating member rotatable around the axis, thereby connecting the first connecting member to the first connecting member. Since the second connection member can be connected to the first connection member, the first connection member and the second connection member can be connected without performing a complicated process such as forming a relief hole for a bolt on the opposite end surface of the handrail as in the related art. Can be attached to the opposite end faces of each of the two handrails, and the labor and time required for drilling the bolt relief hole can be reduced, which is extremely effective in reducing the construction cost. .

According to the handrail connecting member of the second aspect of the present invention, since the disc-shaped fixing piece and the disc-shaped base are provided with the insertion holes for the locking means, the disc-shaped fixing piece and the disc are formed. The disc-shaped fixing piece and the disc-shaped base can be easily formed by inserting a locking means such as a wood screw into the insertion hole and performing a fastening operation in a state where the bases are in contact with the facing end faces for connection of the handrail, respectively. It can be fixed to the opposite end face of the handrail.

According to the handrail connecting member of the third aspect of the present invention, an annular convex edge protruding toward the center is provided at the base end side of the threaded concave portion of the annular operating member. A presser disc that slidably holds the portion between the disc-shaped fixed piece and the disc-shaped fixed piece is fixed to the disc-shaped fixed piece, and the presser disc has an insertion hole corresponding to the insertion hole of the disc-shaped fixed piece. Therefore, if the first connecting member is fixed to the end surface of the handrail by inserting a retaining means such as a wood screw into the insertion hole of the holding disc and the disc-shaped fixing piece, the annular convex edge portion becomes the holding disc and the disc-shaped fixing piece. And can be slid in the circumferential direction in a state of being sandwiched between them. Therefore,
By operating the outer peripheral surface of the annular operating member by pinching it with a finger, the annular operating member can be rotated around the axis.

According to the handrail connecting member according to the fourth aspect of the present invention, a base end wall is formed integrally with the annular operation member on the base end side of the threaded concave portion of the annular operation member. The disc-shaped fixing piece is rotatably connected to the disc-shaped fixing piece via a central axis about an axis, and an insertion hole through which the head of the locking means corresponding to the insertion hole of the disc-shaped fixing piece can pass through the base end wall. The locking means, such as a wood screw, is inserted through the insertion hole in the base end wall to pass through the head, and the locking means is inserted through the insertion hole in the disc-shaped fixing piece. With the first connecting member fastened to the end surface of the slide, the annular operating member is rotatable around the central axis.

According to the handrail connecting member of the present invention, one or both of the first connecting member and the second connecting member are made of metal or synthetic resin. The material can be made extremely durable, and the two handrails can be reliably connected.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an example of a handrail connecting member according to the present invention.

FIG. 2 is a perspective view showing a state in which the handrail connecting member of FIG. 1 is assembled and attached to the handrail.

FIG. 3 is a perspective view showing a state where left and right handrails are connected by a connection member.

FIG. 4 is a sectional view taken along line AA of FIG. 2;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is an exploded perspective view showing another example of the handrail connecting member according to the present invention.

7 is a cross-sectional view showing a state in which left and right handrails are connected by another example of a handrail connecting member shown in FIG. 6;

FIG. 8 is an exploded cross-sectional view illustrating a conventional handrail connection fitting.

9 is a cross-sectional view illustrating a state where the handrail connection fitting of FIG. 8 is assembled and left and right handrails are connected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Handrail connection member 2, 2a First connection member 21 Disc-shaped fixing piece 210 Projecting surface portion 21a, 26a, 31a Insertion hole 21b Caulking projection 21c Locking groove 21d Central shaft 22 Ring operating member 23 Female screw 24 Screw recess Reference Signs List 25 annular convex edge 25a base end wall 26 holding disk 26a retaining screw 26b caulking hole 3 second connecting member 31 disk-shaped base 32 male screw 33 screwing convex 4 wood screw T handrail S end face

Claims (5)

(57) [Claims] 1. A handrail connecting member comprising a first connecting member fixed to one opposing end face of two handrails to be connected and a second connecting member fixed to the other opposing end face,
The first connection member has a disc-shaped fixing piece fixed to one of the opposed end faces, and is attached to the disc-shaped fixing piece so as to be rotatable around its axis, and has an annular shape larger in diameter than the disc-shaped fixing piece. A screw-in recess formed by screwing a female screw on the inner peripheral surface of the annular operation member, and the second connection member is fixed to the other opposing end surface;
A handrail connecting member, wherein a screwing convex portion provided with a male screw screwed into the screwing concave portion is formed on the disc-shaped base portion. 2. The disc-shaped fixing piece is provided with an insertion hole for locking means for attaching a first connecting member to one of the opposite end faces of the two handrails and the disc-shaped fixing piece. 2. The handrail connecting member according to claim 1, wherein an insertion hole for locking means for attaching the second connecting member is formed in the other end face of the base. 3. An annular convex edge protruding toward the center is provided on the base end side of the threaded concave portion of the annular operating member, and the annular convex edge is relatively slid between the annular convex edge and the disc-shaped fixing piece. 3. The hand according to claim 2, wherein the presser disc movably clamped is fixed to the disc-shaped fixing piece, and the presser disc has an insertion hole corresponding to the insertion hole of the disc-shaped fixing piece. Slide connection member. 4. A base end wall is formed integrally with the annular operation member at a base end side of the threaded concave portion of the annular operation member, and the base end wall and the disc-shaped fixing piece are pivoted through a central axis. An insertion hole which is rotatably coupled around the center and through which a head of the locking means corresponding to the insertion hole of the disc-shaped fixing piece can pass is formed in the base end wall. 2. The handrail connection member according to 2. 5. The handrail connection member according to claim 1, wherein one or both of the first connection member and the second connection member are made of metal or synthetic resin. .