JP2005282014A - Handrail device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handrail device safely and comfortably usable, reducing the number of part items, and having a simple structure, by bringing down a handrail quickly at first and slowly at the end, when used by bringing down the handrail. <P>SOLUTION: In this handrail device, a base shaft part 3 for journaling a handrail bar 4 has a center block 21 connected to the handrail bar 4, and a housing 23 for storing this block, and is constituted so that the handrail bar 4 and the center block 21 are rotatably held in a predetermined range to the housing 23 fixed to a base 2. An energizing means having a torsion coil spring 45 engages with one end of the center block 21, and applies the rotation moment in the springing-up direction to the handrail bar 4 in the whole rotational range of the handrail bar 4. A braking means having a rotary damper 54 engages with the other end of the center block 21, and acts so as to reduce a speed of bringing-down of the handrail bar 4 in a using position vicinal range of the handrail bar 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a handrail device that is installed on the wall of a toilet or bathroom, for example, and is used by elderly people and physically handicapped persons. More specifically, the handrail device falls down horizontally when used, and stands upward when not used. The present invention relates to a so-called flip-up storage type handrail device that can be stored along a wall surface.

  Patent Documents 1 to 3 are known as handrail devices of a type in which a handrail is moved up and stored like a circuit breaker when not in use and tilted to a horizontal position when in use. In both cases, when the handrail in the standing state is tilted, the handrail falls on its support shaft to prevent the handrail from falling rapidly due to its own weight and causing an unexpected danger. The urging means that resists is incorporated to reduce the impact at the time of falling, and the urging force is used to reduce the load when the handrail is flipped up.

  In the inventions described in the above documents, there is a difference in the configuration of the biasing means, and the handrail device described in Patent Document 1 uses a spiral spring as a biasing means that resists the falling moment of the handrail and rotates the support shaft. A disc damper is attached to brake the moving speed so that the handrail does not move rapidly both when the handrail is lowered and when it is lifted.

  Moreover, the handrail apparatus described in Patent Document 2 employs a combination of two coil springs or torsion bars as the same urging means, and one urging member is in an upright state since the handrail is in a horizontal state. The other urging member is configured to operate in a part of the range.

In addition, the handrail device described in Patent Document 3 uses a spiral spring as a biasing means that resists the falling moment of the handrail as a similar biasing means, and a shaft portion for braking the rotation speed of the support shaft. Further, a damper is attached to the shaft, and a brake device is built in the shaft portion, so that a free stop can be made in a range from a state where the handrail is in a standing state to a state where the handrail is in a standing state.
Japanese Patent Laid-Open No. 2001-220876 JP 2000-257233 A JP-A-10-245958

  As the voice of the user who uses this type of handrail, the applicant is frustrated when the handrail in the standing state is in a horizontal state and the rotation speed is too slow. The company requested that it should fall quickly at a speed close to free fall, and then stop safely at a position close to the horizontal state with a slow speed. Therefore, when the structure of the above-described conventional handrail device is reviewed in order to meet such a demand, it is difficult to meet the user's demand as described above, for example, in the structures as described in Patent Documents 1 and 2. It was determined that there was room for improvement.

  In addition, this type of handrail device should be widely installed in many facilities for the convenience of the user, so that it is required that the structure be simple and inexpensive. From this point of view, if the structure of the conventional handrail device is reviewed, especially in the structure as described in Patent Document 3, the number of parts is very large and the shape of each part is complicated, resulting in high manufacturing costs. As a result, I got the point that the improvement was necessary.

  The present invention has been made in view of the circumstances as described above, and when a handrail in an upright state is placed in a horizontal state, the handrail should be quickly lowered at the beginning and slowly used at the end to be used safely and comfortably. It is an object of the present invention to realize a handrail device that can be used with a simple structure with as few parts as possible.

  In order to achieve the above object, the handrail device of the present invention is a housing in which a handrail bar is pivotally supported by a base shaft portion provided on a base for fixing a wall surface, and stands along the wall surface from a use position where the handrail bar is in a substantially horizontal state. A handrail device that is rotatably held to a position, the base shaft portion having a substantially cylindrical center block that is arranged on a horizontal rotation shaft, and a substantially cylindrical housing that houses the center block And a guide hole for guiding the rotation of the handrail bar is formed on the peripheral surface of the housing, and a base end portion of the handrail bar inserted through the guide hole is connected to a center block in the housing. And the center block is held so as to be rotatable within a predetermined range with respect to the housing fixed to the base, and an urging means having a torsion coil spring is provided at one end of the housing. The biasing means engages with one end of the center block, and applies a turning moment in the storage position direction to the handrail bar within the entire range from the storage position of the handrail bar to the use position. The other end of the housing is provided with a braking means having a rotary damper, and this braking means engages with the other end of the center block, so that the handrail bar can be lowered in the vicinity of the use position of the handrail bar. It is characterized by acting to decelerate.

  According to the present invention, the handrail bar is pivotally supported by a simple mechanism, and a rotation moment is always applied to the handrail bar in the storing direction. Since the braking means for decelerating the action acts, the handrail bar can be brought down to the middle quickly and slowly in the latter half, and the response when the handrail bar is flipped up is lightened.

  In the above invention, it is preferable that the rotational moment in the storage position direction given to the handrail bar by the urging means increases in proportion to the angle at which the handrail bar is retracted from the storage position. Thereby, the impact when the handrail bar is lowered is further alleviated, and the response when jumping up is further lightened.

  In the above invention, it is preferable that the operating range of the braking means is set within an angle range of 45 ° on the handrail bar use position side. Thereby, the fall of the handrail bar is controlled to an appropriate speed without being too fast or too slow, and a good feeling of use can be obtained.

  Further, according to the present invention, as a detailed structure, a cylindrical peripheral surface cover that is divided into a central part and left and right side parts is externally provided on the outer side of the housing, and the peripheral surface cover of the central part is provided on the peripheral surface. While the base end of the handrail bar is inserted into the formed hole, the handrail bar and the center block are attached to rotate the outer peripheral surface of the housing, while the left and right peripheral surface covers are attached together with the housing. A substantially disc-shaped spring retainer plate is attached to the outer end face of one of the peripheral covers on both the left and right sides, and is twisted on a shaft pin inserted through the center of the center block. A coil spring is inserted and held between the spring retainer plate and the center block, and both ends of the torsion coil spring are placed on the end surface of the center block and the inner surface of the spring retainer plate. An urging means is configured by being hooked by a spring latch pin that protrudes from each other, and a substantially disc-shaped damper presser plate is formed on the outer end surface of the other peripheral cover of the peripheral covers on the left and right sides. Is attached, and a rotary damper is inserted through the center of the center block, and is held in a state of being engaged with both the damper pressing plate and the center block, thereby constituting a braking means.

  Thereby, it is possible to realize a simple and rational base shaft structure, and it is possible to reduce the machining cost and assembly cost of the parts.

  In the handrail device of the present invention, the handrail bar is pivotally supported by a simple mechanism, and a rotation moment in the storage direction is always given to the handrail bar, and the handrail bar falls down in the vicinity of the use position of the handrail bar. Since the braking means for reducing the speed acts, when the handrail bar is lowered to the use position, it can be safely lowered at the beginning and slowly at the end. On the contrary, when the handrail bar is flipped up to the storage position, the handrail bar can be lifted with a light force with the assistance of the urging means.

  In addition, by adopting the structure of the present invention, most of the component parts become a substantially cylindrical shape that can be easily processed to reduce the processing cost, and the number of component parts can be reduced, thereby reducing the manufacturing cost. Become.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG.1 and FIG.2 has shown the whole shape of the handrail apparatus 1 which concerns on embodiment of this invention. A base shaft portion 3 having a horizontal rotation axis is attached to the base 2 for fixing the wall surface, and a base end portion of a handrail bar 4 is pivotally supported on the base shaft portion 3 so that the handrail bar 4 is used in a substantially horizontal state. It is hold | maintained so that it can rotate to an up-down direction from the position to the storage position which stood up along the wall surface. The handrail bar 4 is folded back in a semicircular shape when viewed from the side and extends to the wall surface side, and the cushion rubber 5 attached to the tip of the handrail bar hits the lower part of the base 2 so that the handrail bar 4 falls below the use position. It is configured to be a stopper for not lowering, and at the same time, the shock when the handrail bar 4 is tilted is absorbed by the elasticity of the cushion rubber 5.

  As shown in FIGS. 3 to 4, the base 2 is fixed to the wall surface via a base fixing bracket 6. The base fixing bracket 6 is a cross-sectional groove-shaped member having protrusions 7 on both left and right sides, and the bottom surface portion 8 is fixed to the wall surface with a tapping screw 9 or the like. The base 2 is open on the back side, and the fixing screw 10 is attached to the projecting piece 7 of the base fixing bracket 6 from the side of the base 2 with the opening surface being covered with the base fixing bracket 6. It is fixed by screwing. The base 2 has an upper half protruding forward, and side-view arcuate recesses 11 are formed on both left and right sides thereof. A screw member 12 against which the cushion rubber 5 of the handrail bar 4 is abutted is attached to the lower half of the base 2. The screw member 12 is attached so that the front end surface thereof can protrude from the base 2 so that the horizontal state of the handrail bar 4 at the use position can be adjusted.

  FIGS. 4-6 shows the structure of the base shaft part 3 which makes the principal part of this invention. The base shaft portion 3 has a substantially cylindrical outer shape, and is attached to a recess 11 that protrudes forward of the base 2 with its axis centered horizontally.

  A center block 21 having a substantially cylindrical outer shape is incorporated in the central portion of the base shaft portion 3 while being connected to the base end portion of the handrail bar 4. The center block 21 and the handrail bar 4 are connected by a shaft pin 22 inserted through the center of the center block 21.

  The center block 21 is housed in a substantially cylindrical housing 23. The housing 23 is formed with a cylindrical hole portion 24 that matches the outer diameter of the center block 21, and this cylindrical hole portion 24 opens at one end face of the housing 23. 21 is inserted and held in rotation. The housing 23 has a long hole-shaped guide hole 25 for guiding the rotation of the handrail bar 4 on the peripheral surface of the center portion thereof, and the base end portion of the handrail bar 4 is inserted into the guide hole so that the handrail is inserted. The bar 4 and the center block 21 are restrained so as to be able to rotate only within the range of the guide hole 25. In the exemplary embodiment, as shown in FIG. 1, the rotation angle is set to about 95 °.

  On the outer peripheral surface of the housing 23, cylindrical peripheral surface covers 26, 27, and 28 divided into a central portion and left and right side portions are inserted. A circular hole portion 29 into which the handrail bar 4 can be inserted is formed in the peripheral surface cover 27 at the center portion, and is connected to the center block 21 in a state where the base end portion of the handrail bar 4 is inserted into the hole portion 29. Has been.

  Screw holes 30 for fixing the peripheral surface covers 26, 28 to the base 2 are formed in the peripheral surface covers 26, 28 on the left and right sides, respectively, and a back plate 31 is overlapped and inserted from the back side of the base 2. The distal ends of the fixing screws 32 are screwed into the screw holes 30 of the peripheral surface covers 26 and 28. A screw hole 33 for inserting the tip of the fixing screw 32 is also formed in the housing 23 so as to match the position of each fixing screw 32.

  With these configurations, the peripheral covers 26 and 28 on both the left and right sides and the housing 23 are fixed to the base 2, and the peripheral cover 27 and the center block 21 at the center are interlocked with the vertical movement of the handrail bar 4. It is held so as to rotate.

  A disc-shaped spring retainer plate 41 is fixed to one end surface of the housing 23 by a plurality of screws 43 together with a disc-shaped side cover 42 which is overlapped on the outer side. In a space formed between the spring pressing plate 41 and the center block 21, an urging unit that applies a rotational force in a direction in which the handrail bar 4 jumps up to the center block 21 is provided.

  The urging means includes a torsion coil spring 45 inserted through an extension of the shaft pin 22 inserted through the center of the center block 21 via a cylindrical collar 44, an end surface of the center block 21, and a spring press plate. On the inner side surface of 41, spring latch pins 46 and 47 are provided, which are respectively projected outwardly from the axis of the base shaft portion 3.

  FIG. 7 is a view showing a cross section of each portion of the base shaft portion 3 for explaining the rotation operation of the base shaft portion 3.

  The torsion coil spring 45 is hooked on both spring latch pins 46 and 47 in a state where the torsion coil spring 45 is slightly stretched in the direction opposite to the winding direction. Due to the restoring force of the torsion coil spring 45, a rotational moment in the direction in which the handrail bar 4 is flipped up always acts on the center block 21.

  In the storage position of the handrail bar 4 shown in the right figure of (c), a minute rotational moment acts on the torsion coil spring 45, and the handrail bar 4 is pulled toward the wall surface side with a weak force. When the handrail bar 4 is tilted from this state, the extension load of the torsion coil spring 45 increases in proportion to the fall angle, and is maximized at the use position of the handrail bar 4 shown in the left figure of (c). This maximum value is set to be slightly smaller than the falling moment due to the weight of the handrail bar 4.

  A disk-shaped damper plate 51 is fixed to the other end surface of the housing 23 by a plurality of screws 53 together with a disk-shaped side cover 52 stacked on the outside. A braking means for reducing the rotational speed of the center block 21 is provided at the shaft center of the housing 23 located on the damper plate 51 side.

  The braking means in the handrail device 1 of the present invention is constituted by a rotary damper 54 that is inserted through the axis of the housing 23 and engages both the damper plate 51 and the center block 21. As such a rotary damper 54, the braking torque is exhibited only for rotation in the forward direction (downward direction of the handrail), and almost no braking torque is generated for rotation in the reverse direction (handrail raising direction). A one-way type damper is preferable, and for example, a rotary damper 54 such as a TD series manufactured by Tok Bearing Co., Ltd. can be suitably used.

  The illustrated rotary damper 54 includes a cylindrical casing 55 and a rotating member 56 that is partly accommodated in the casing 55 and protrudes in the same direction as the casing 55, such as silicon oil filled in the casing 55. Due to the resistance of the viscous fluid, braking torque is exhibited only within a certain range of forward rotation. A non-circular protruding portion 57 is provided on the end surface of the casing 55, and the protruding portion 57 is inserted into a non-circular hole 58 formed in the damper plate 51, so that the rotation of the casing 55 is restricted. Further, a non-circular protruding portion 59 is also provided on the end surface of the rotating member 56, and this protruding portion 59 is inserted into a non-circular hole 60 formed on the end surface of the center block 21, and together with the center block 21. Rotate.

  In the present invention, the braking torque of the rotary damper 54 is set so as to be exerted in a certain range (range of the symbol X shown in FIG. 1) on the use position side in the downward direction of the handrail bar 4. This braking range is preferably about 30 ° to 50 °, and about 45 ° experimentally provides the best feeling of use. With this configuration, the turning operation of the handrail bar 4 is as follows.

  That is, when the handrail bar 4 is tilted from the storage position to the use position, first, the handrail bar 4 starts to be tilted against the weak restoring force of the torsion coil spring 45, and the handrail is tilted by about 10 ° with a light force. The fall moment due to the weight of the bar 4 is torsionally overcomes the restoring force of the coil spring 45, falls naturally and quickly, and from the position of about 45 ° where the braking torque of the rotary damper 54 starts to work to the use position, Decelerate slowly and fall safely. Even in the range close to the use position, the restoring force of the torsion coil spring 45 acts in proportion to the fall angle, so that the fall impact can be kept very small.

  Further, when the handrail bar 4 is desired to be leveled quickly, if the handrail bar 4 is pushed down by hand, braking by the rotary damper 54 is not effective, and the handrail bar 4 is quickly lowered to the use position. This is because the rotary damper 54 utilizes the fact that the braking torque disappears due to its structure when a certain load or more is applied to the rotary damper 54. When the handrail bar 4 falls down by its own weight, the braking torque is used. Is set so that the braking torque is stably exhibited. Even when the handrail bar 4 is forcibly tilted in this way, the cushion rubber 5 attached to the folded end of the handrail bar 4 absorbs the final impact, so that there is almost no risky impact or intense collision noise.

  On the contrary, when the handrail bar 4 is flipped up from the use position, since the braking torque of the rotary damper 54 does not act, the force of the handrail bar 4 is sufficiently lighter than its own weight with the help of the restoring force of the torsion coil spring 45. Can be lifted with. When the raised handrail bar 4 approaches an upright state, the restoring force of the torsion coil spring 45 exceeds the falling moment due to the weight of the handrail bar 4, and the handrail bar 4 is pulled toward the wall surface with a weak force.

  Thus, an urging means for applying a rotational moment in the flip-up direction to the handrail bar 4 within the entire range from the storage position of the handrail bar 4 to the use position, and the handrail bar 4 within the range near the use position of the handrail bar 4. By combining with the braking means for decelerating the fall, the handrail bar 4 can be quickly lowered at the beginning, slowly lowered at the end, and jumped up with a light force.

  And by adopting the structure of each part as shown in the said Example, the number of components can be reduced and manufacturing cost can be reduced. Since most of the component parts shown in the above-described embodiments have a simple shape close to a substantially cylindrical shape, the processing cost of each component part can be kept low.

It is a side view of the handrail device concerning the embodiment of the present invention. Similarly, it is a top view. It is a disassembled perspective view which shows the structure of the base of the handrail apparatus shown in FIG. Similarly, it is a longitudinal cross-sectional view which shows the structure of a base and a base shaft part. Similarly, it is a disassembled perspective view which shows the structure of a base shaft part. Similarly, it is an axial sectional view of the base shaft portion. It is sectional drawing which cut | disconnected the base axis part in each code | symbol position in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Handrail apparatus 2 Base 3 Base shaft part 4 Handrail bar 21 Center block 22 Shaft pin 23 Housing 25 Guide hole 26 Side surface cover 27 Center surface cover 28 Side surface cover 29 Hole 41 Spring press plate 45 Torsion coil spring 46 Spring retaining pin 47 Spring retaining pin 51 Damper plate 54 Rotary damper

Claims (4)

A handrail device, in which a handrail bar is pivotally supported by a base shaft portion provided on a base for fixing a wall surface, and is rotatably held from a use position in a substantially horizontal state to a storage position standing along the wall surface. ,
The base shaft portion has a substantially cylindrical center block arranged on a horizontal rotation shaft and a substantially cylindrical housing for housing the center block, and the handrail bar rotates on the peripheral surface of the housing. The handrail bar inserted through the guide hole is connected to the center block in the housing, and the handrail bar and the center block are fixed to the housing fixed to the base. While being held so that it can rotate within the range,
One end of the housing is provided with an urging means having a torsion coil spring, and the urging means engages with one end of the center block within the entire range from the storage position of the handrail bar to the use position. , Give the handrail bar a turning moment in the storage position direction,
The other end of the housing is provided with a braking means having a rotary damper, and this braking means engages with the other end of the center block, so that the handrail bar can be lowered in the vicinity of the use position of the handrail bar. A handrail device that acts to decelerate.   2. The turning moment in the storage position direction applied to the handrail bar by the urging means is set so as to increase in proportion to a fall angle from the storage position of the handrail bar. Handrail device.   The handrail device according to claim 1, wherein the operating range of the braking means is set within an angle range of 45 ° on the handrail bar use position side. A cylindrical peripheral surface cover that is divided into a center part and left and right side parts is externally mounted on the outside of the housing, and the central surface cover has a base end of a handrail bar in a hole formed in the peripheral surface. In the state where the part is inserted, it is attached so as to rotate the outer peripheral surface of the housing together with the handrail bar and the center block, while the peripheral surface covers on the left and right side portions are fixed to the base together with the housing,
A substantially disc-shaped spring retainer plate is attached to the outer end face of one of the peripheral covers on the left and right sides, and a torsion coil spring is inserted into the shaft pin inserted through the center of the center block. The both ends of the torsion coil spring are held between the spring retainer plate and the center block, and are hooked by spring retaining pins respectively protruding from the end surface of the center block and the inner surface of the spring retainer plate. The biasing means is configured,
A substantially disc-shaped damper presser plate is attached to the outer end surface of the other peripheral cover of the left and right side surface covers, and a rotary damper is inserted through the center of the center block so that the damper presser plate and the center block The handrail device according to claim 1, wherein braking means is configured by being held in a state of being engaged with both.

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