JP4098060B2 - Handrail connecting member - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a handrail connecting member that bends and connects handrails arranged at corners of stairs and corridors at an arbitrary angle.
[0002]
[Prior art]
Conventionally, the connection of handrails arranged at the contact point between the parallel part and the inclined part in the staircase and the corner and the corner angle of the corridor is made by connecting two joints for the bent part according to the inclination angle of the staircase or the corner angle of the hallway. They were connected between the slides.
However, when using such a joint for a bent portion, it is necessary to prepare a joint having an appropriate bending angle by examining the bending state of a place to be arranged in advance, and further, having a plurality of angles for each use location. Since it was also necessary to prepare, it was difficult to carry out the installation work quickly and at low cost.
[0003]
On the other hand, in Japanese Patent Laid-Open No. 5-148968, a joint having a configuration in which two handrails as shown in FIG. ing.
This is useful in that linear handrails can be connected within a predetermined angle range with a simple configuration. However, in this universal joint, when the hemispherical concave portion in the engaging portion is covered deeper than the center of the spherical convex portion, the engagement is surely impossible to drop off, but the angle at which it can be bent becomes narrow.
[0004]
Therefore, when the bending angle is large as required at the corner of the hallway (for example, 90 degrees), the depth of the hemispherical concave portion of the engaging portion is reduced, but the engaging state is detachable. As a result, there is a risk of rocking due to handrail deflection or the like and lacking stability, and there is a risk that a gap is formed here and a finger is pinched. In addition, utility model registration No. 3070750 presents a handrail member connector that can be bent in one direction and has a spherical convex portion as shown in FIG. However, although the angle at which it can be bent is large, the engaging part is detachable, which causes a problem in safety.
[0005]
With respect to such a problem, a handrail connecting member in which the engagement state of the connection portion is not released even at a large bending angle is disclosed in JP-A-11-13244, JP-A-11-93367, and JP-A-2000-17809. It is presented in the gazette. These connecting members can increase the bending angle by arranging a spherical or bowl-shaped connecting block between two connecting tools to form two joints.
[0006]
However, it is particularly important that the handrail can be guided by an elderly person or a handicapped person without anxiety, but if a saddle-shaped or spherical connecting block as described above is arranged at the connecting corner, The smoothness and continuity of the handrail were hindered, and there was a danger of feeling uneasy or hindering safe walking when the hand was caught in this part.
In addition, since such a handrail connecting member requires a connecting block between two connecting tools, there is a problem that the structure is complicated, the appearance is not smooth and beautiful, and the installation is expensive. It was.
[0007]
[Problems to be solved by the invention]
Therefore, the present invention can connect handrails at various bending angles corresponding to the inclined part of the staircase, the corner part of the hallway, and the like with a simple configuration, and the engaging state of the engaging part is reliable, and the cost is low. It is another object of the present invention to provide a handrail connecting member that is easy to install. Another object of the present invention is to connect handrails continuously and smoothly while ensuring stability, thereby realizing a safe and beautiful handrail connection even at the bent portion.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, a handrail connecting member according to the present invention includes a convex connector having a hemispherical convex portion at a distal end portion and a handrail insertion portion at a proximal end portion, and a distal end portion. the said convex connector hemispherical protrusion of the at least a portion inserting a has a receiving portion having a circular opening and receiving connector having a handrail insertion portion to a proximal end portion slidably with each other In the handrail connecting member engaged with the hemispherical convex portion, a groove having a predetermined width and length is provided in the hemispherical convex portion of the convex connector , and the hemispherical convex portion is provided inside the opening of the receiving connector. inserted into the groove and the engaging member to the both connector engaged with one another are provided, engaging member includes a substrate to be inserted through the groove into the convex coupling within the the convex connector A locking rod that penetrates the base of the inserted portion in the width direction of the groove and whose both ends are locked in the convex connector; It comprise configured, and wherein the angle of engagement between the connector receiving the said convex connector can be freely varied within the range of the length of the groove.
[0009]
Since the handrail connecting member has a simple structure, it is easy to install at low cost and can realize bending angles corresponding to various installation locations. Further, the bent portion formed by such a connecting member has a high safety because the engagement cannot be removed and is continuous and flat, and the appearance is smooth and the appearance is excellent.
[0010]
And by the engaging member comprised including said base | substrate and a latching rod, engagement of both connection tools is reliable, and this does not drop. In addition, as a mode in which the locking rod is locked inside the convex connector, the groove penetrates to the cavity provided inside the hemispherical convex portion, and a locking rod longer than the width of the groove is formed on the inner wall of the cavity. A mode in which both ends are locked and the locking bar is slidable along the groove, or the locking bar is fixed at a predetermined position inside the convex connector, and the locking bar fixes the base A mode in which the engaging member swings around the locking rod is conceivable.
[0011]
Further, the base of the engaging member is inserted deeper than the substantially central position of the hemispherical portion of the hemispherical convex portion, and the locking rod of the engaging member penetrates the base at the substantially central position and the base If the shaft is supported as a shaft, the engagement between both the coupling members becomes more rigid, and the sliding is stable and smooth with the locking rod as the center.
[0012]
If the opening of the receiving connector has a shape notched by a surface inclined by 40 degrees or more with respect to a surface perpendicular to the central axis of the handrail insertion portion of the receiving connector, the handrail is bent. When connecting, the outer surfaces of the two couplers have a smooth curved surface due to the hemispherical convex part of the convex coupler and the outer surface of the receiver part that covers the opening of the receiver coupler that covers the convex part. become. Therefore, even if the bending angle is large, the straight handrail is further smoothly and continuously connected by the smooth curve by the connector according to the present invention.
[0013]
Further, the groove of the hemispherical convex portion is provided with a length from a substantially boundary position between the handrail insertion portion of the convex coupler and the hemispherical convex portion to a substantially vertex position of the hemispherical convex portion, If the groove is covered with the receiving portion of the receiving connector when the wire is bent at approximately 90 degrees and connected, the groove can be prevented from being exposed to the outside, and the outer surface of the bent portion even when bent greatly A beautiful appearance is maintained, and the user feels uneasy.
[0014]
A spring for urging the inserted handrail end portion from the bottom side of the handrail insertion portion toward the insertion port may be provided in both the convex connector and the receiving connector or in one handrail insertion portion. . In this case , even if the inserted handrail end is not fixed with a screw or the like, the connection with the handrail in the handrail connecting member is stable by the urging force of the spring, and the engagement between the two connecting tools is loose. Is also minimized.
[0015]
In addition, the center position of the hemisphere of the hemispherical convex portion means a point where perpendicular lines from a plurality of different positions on the curved surface (spherical surface) of the hemispherical convex portion to the inside of the hemisphere intersect. In addition, the locking rod is locked in the convex connector when the both ends of the locking rod are rotatably supported by the convex connector and when the locking rod rotates the base body. And both ends of the locking rod are fixed to the convex connector so as to be rotatable or non-rotatable .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of a handrail connecting member according to the present invention will be described in detail with reference to the drawings.
[0017]
1 and 2 show a handrail connecting member 1 according to a preferred embodiment of the present invention.
FIG. 1 shows a state in which the handrail connecting member 1 can connect two straight handrails (one-dot chain line) almost linearly. In the handrail connecting member 1, a convex connector 2 and a receiving connector 3 each having a cylindrical handrail insertion portion are slidably and non-detachably engaged.
[0018]
The convex connector 2 has a substantially cylindrical shape as a whole, has a handrail insertion portion 21 for inserting and fixing a handrail at a base end portion, and a hemispherical convex portion 22 to be inserted into the receiving connector 3 at a distal end portion. have. The hemispherical convex portion 22 has a hollow inside, and an arc-shaped groove 23 extends from the vicinity of the boundary with the cylindrical handrail insertion portion 21 to the vicinity of the convex portion vertex so as to penetrate to the hollow portion.
[0019]
The receiving coupler 3 is substantially cylindrical as a whole like the convex coupler 2, has a handrail insertion portion 31 for inserting and fixing a handrail at the base end portion, and the convex coupler 2 at the distal end portion. And the outer surface that covers and holds the curved surface of the hemispherical convex portion 22 has a curved receiving portion 32. The opening 33 has a shape cut out by a surface of about 45 degrees with respect to a surface perpendicular to the central axis of the substantially cylindrical receiving connector 3, and the internal cavity is exposed. Further, a stopper portion 34 for stopping the handrail inserted from the handrail insertion portion is provided at the bottom of the hollow portion, and the stopper portion 34 has an engaging member near the opening 33 where the receiving portion 32 is lowest. 35 protrudes.
[0020]
Engagement member 35 via, for example, a thin plate-shaped base body 35a, so as to consist of a locking bar 35b which penetrate at right angles thereto in the vicinity of its tip, the base 35 a groove 23 of the convex connector 2 When the hollow portion is inserted , both end portions of the locking bar 35 b extending in the width direction of the groove 23 are locked to the inner wall of the hemispherical convex portion 22.
[0021]
When the engagement angle of the handrail connecting member 1 in FIG. 1 is about 90 degrees, the result is as shown in FIG. In the handrail connecting member 1 , both the connecting tools 2 and 3 can be easily accommodated to bent portions having various angles because the engaging angle of the connecting members 2 and 3 can be varied within a range of about 90 degrees by the engaging member 35. . Further, the engagement member 35 can keep the bent state stably without dropping the engagement. Moreover, there is no worry that a gap is generated at the bent portion and the hand is pinched.
[0022]
Furthermore, the outer surface of the receiving part 32 of the receiving coupler 3 in the bent state and the curved surface of the hemispherical convex part 22 of the convex coupler 2 have a smooth and smooth appearance. In this state, since the groove 23 of the hemispherical convex portion 22 is covered with the receiving portion 32, the smooth aesthetic appearance is not impaired, and the touch is not disturbed.
[0023]
3 and 4 show respective states when the handrail connecting member 1 is separated into the convex connector 2 and the receiving connector 3.
FIG. 3B is a cross-sectional view taken along line XX of the convex connector 2 in FIG. 3A. As shown in this figure, the convex connector 2 has a hollow interior, A donut plate-like stopper portion 24 for stopping the handrail inserted from the slide insertion portion 21 is provided as a bottom portion .
[0024]
A spring 40 is disposed on the stopper portion 24 that faces the end surface of the inserted handrail, and biases the end surface of the inserted handrail in the direction of the insertion port. The spring 40 has a bottom side slightly larger than the inner diameter of the handrail insertion portion 21 and is in close contact with the inner wall of the handrail insertion portion 21 so as not to easily come off. Such a spring 40 is similarly provided in the handrail insertion portion 31 of the receiving connection tool 3 as shown in FIG.
[0025]
The inserted handrail end portion is biased by the spring 40 in the direction in which it is removed. However, since the inserted handrail is fixed to the wall by a fixing tool , the end portion of the handrail tends to come out from the end. The biasing force is applied to the handrail connecting member 1 through the handrail insertion portion . As a result, the inserted handrail end portion is stabilized in the handrail insertion portions 21 and 31, and the engagement between the two connecting tools that are pressed against each other can be stably prevented. It should be noted that the spring 40 is effective only by being provided on one of the convex connector 2 or the receiver connector 3, but it is more stable if provided on both.
[0026]
As shown in FIGS. 4A and 4B, in the receiving coupler 3, the engaging member 35 protrudes from the stopper portion 34 that can be seen from the opening 33. The engaging member 35 is fixed by a screw 37 from the handrail insertion portion side through a screw hole 36 of the stopper portion 34.
By the way, since the engaging member 35 has the locking rod 35b, it cannot be inserted into the groove 23 of the convex connector 2 as it is, so that the handrail insertion portion of the convex connector 2 can be used to engage both the connectors. The engaging member 35 before being fixed is inserted from the side 21, and the leg portion is protruded from the inside of the groove 23 to the outside, and the hemispherical protrusion 22 is inserted into the receiving connector 3. What is necessary is just to fix with the screw | thread 37 through the screw hole 36 from the insertion port side of the handrail insertion part 31. FIG.
[0027]
As described above, since the handrail connecting member 1 is composed only of the convex connector 2 and the receiver connector 3 each having a simple configuration, it can be easily manufactured at low cost.
[0028]
FIGS. 5A and 5B show a handrail connecting member 1B according to the second preferred embodiment of the present invention, wherein the handrail is bent within the range of the engagement angle at A and the engagement angle at B. FIG. Can be linked.
The handrail connecting member 1B has substantially the same basic configuration as the handrail connecting member 1, but the base of the engaging member 38 is deeper than the center position of the hemispherical convex portion 22 of the convex connector 2b. is extended, the latch rod 39 is rotatably supported this through the substrate at the center of the hemispherical projections 22, and are engaged with the convex coupling within 2b.
[0029]
Therefore, the engaging member 38 and the receiving connector 3b following the engaging member 38 can swing around the locking rod 39. Thus for a handrail connection member 1B the shaft position is fixed, than the connecting member 1 for the above-mentioned handrail, swinging from A of FIG. 5 around the latch rod 39 to B (bending) Becomes smooth. In addition, if a spring is provided in the handrail insertion portion in the same manner as the handrail connecting member 1, rattling of the handrail connecting member 1B can be prevented.
[0030]
Further, in the handrail connecting member 1B, the appearance of the groove 23b of the convex connector 2b is the same as that of the handrail connecting member 1, but the hollow portion inside the hemispherical convex portion 22 is not necessary, so the groove 23b. However, it is only provided in a sector shape within the convex coupling portion 22 within a range in which the engaging member 38 swings.
Further, the locking rod 39 can be expected to have the same effect whether it is fixed to the engaging member 38 or in a state where the locking rod 39 is not fixed but rotated freely, but the locking rod 39 is inserted into the hole provided in the engaging member 38. It is recommended from the viewpoint of ease of manufacturing that it is only necessary to pass through the center of the hemispherical convex portion 22 from the outside of the convex connector 2b and provide the locking rod.
[0031]
Although the best configuration for carrying out the present invention has been disclosed in the above description, the present invention is not limited to this.
[0032]
【The invention's effect】
As described above, the handrail connecting member according to the present invention can be easily used as a connecting member that can connect handrails corresponding to various bending angles such as an inclined part of a staircase or a corner part of a corridor with a simple configuration. In addition, handrails can be connected at low cost. Further, this ensures the engagement of the bent portion to ensure stability, and by connecting the handrails continuously and smoothly, safe and beautiful connection of the handrails can be realized.
[Brief description of the drawings]
FIG. 1 is a side view of a handrail connecting member according to a first preferred embodiment of the present invention.
FIG. 2 is a side view showing a state in which the handrail connecting member in FIG. 1 is changed to a different engagement angle.
3A is a front view showing a convex connector of the handrail connecting member in FIG. 1, and FIG. 3B is a sectional view taken along line XX of FIG.
4A is a front view showing a receiving connector of the handrail connecting member in FIG. 1, and FIG. 4B is a sectional view taken along the line YY.
FIG. 5A is a side view of a handrail connecting member according to a second preferred embodiment of the present invention, and FIG. 5B is a state in which the engagement angle of FIG. 5A is changed. FIG.
FIG. 6 is a side view showing a conventional example.
FIG. 7 is a side view showing a conventional example.
[Explanation of symbols]
1,1B Handrail connecting member, 2,2b Convex connector, 3,3b Receiving connector, 21,31 Handrail insertion part, 22 Hemispherical convex part, 23,23b Groove, 24, 34 stopper part, 32 Part, 33 opening part, 35, 38 engaging member, 35a base, 35b, 39 locking rod, 36 screw hole, 37 screw, 40 spring

Claims (5)

A convex connector having a hemispherical convex portion at the distal end and a handrail insertion portion at the proximal end portion, and a circular opening for inserting at least a part of the hemispherical convex portion of the convex coupler at the distal end portion In the connecting member for handrails having the receiving portion provided and the receiving connector having the handrail insertion portion at the base end portion slidably engaged with each other,
A groove having a predetermined width and length is provided in the hemispherical convex portion of the convex connector,
The opening inside of the receiving connector, and the engaging member is provided to engage each other both connector is inserted into the groove of the hemispherical protrusion,
The engaging member passes through the base inserted into the convex connector through the groove and a portion of the base inserted into the convex connector in the width direction of the groove, and has both ends in the convex connector. A locking rod to which the part is locked, and
The handrail connection member, wherein an engagement angle between the convex connection tool and the receiving connection tool is variable within a range of the length of the groove. The base of the engaging member is inserted deeper than the substantially central position of the hemispherical convex portion, and the engaging rod of the engaging member penetrates the base at the substantially central position and pivots the base. The handrail connection member according to claim 1, wherein the handrail connection member is supported. Opening of the receiving connector is claim 1 or characterized by having a notched shape by plane inclined more than 40 degrees with respect to a plane perpendicular to the central axis of the handrail insertion portion of the receiving only connector The handrail connecting member according to claim 2 . The groove of the hemispherical convex portion is provided with a length from a substantially boundary position between the handrail insertion portion of the convex connector and the hemispherical convex portion to a substantially vertex position of the hemispherical convex portion, and a handrail is provided. The handrail connection member according to any one of claims 1 to 3, wherein the groove is covered with a receiving portion of the receiving connection tool when bent and connected at approximately 90 degrees. A spring for biasing the inserted handrail end portion from the bottom side of the handrail insertion portion toward the insertion port is provided in one or both handrail insertion portions of the convex connector and the receiving connector. The connection member for handrails according to any one of claims 1 to 4, wherein the connection member is for handrails.

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