JP5376471B2 - Undulating handrail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily lock a handrail body in an inclined posture without a lever operation. <P>SOLUTION: For an erectable type handrail, a turning base part 13 of a handrail body 11 is supported freely turnably in a vertical direction through a horizontal shaft part 14 by a housing 12 fixed to a wall surface 10 and the handrail body 11 can be locked in first and second inclined postures B and C between a roughly upright withdrawn posture D and a roughly horizontal using posture A. The housing 12 includes a stopper block 20 for regulating the downward turning of the handrail body 11 from the using posture A, and a handrail locking mechanism 21 for making the handrail body 11 turnably in a fall-down direction from the withdrawn posture D to the using posture A and regulating the downward turning in the first and second inclined postures B and C when it is turned in an erection direction from the using posture A to the withdrawn posture D. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to an undulating handrail installed in a toilet or the like.

  2. Description of the Related Art Conventionally, handrails that are installed in a toilet or the like and assist a user such as an elderly person, a sick person, or a physically handicapped person have a relief type that can stand along a wall surface when not in use. As described in Patent Document 1, this undulating handrail is such that the handrail main body is retracted along the wall surface in an upright posture when not in use, and the handrail main body is tilted to a horizontal use posture during use. By the way, the action of raising the body by placing a hand on the handrail varies depending on the degree of inconvenience of the user's body. Therefore, there is a case where the force cannot be applied only by the horizontal use posture and the body cannot be raised. For this reason, for example, as disclosed in Patent Document 1, a undulating handrail that can be locked in an inclined posture has been proposed.

JP 2009-82617 A

  However, in Patent Document 1, the base end portion of the handrail main body is supported by the support member attached to the wall surface so as to be rotatable in the vertical direction via the horizontal axis. Is provided with a locking pin that holds the pin in a horizontal position or an inclined position, and the locking pin is inserted into and removed from the pin hole of the support member, thereby fixing the handrail body at a predetermined position where the pin hole is formed. For this reason, when changing the posture of the handrail main body, it has been necessary to perform the disengagement operation of the locking pin by the operation lever. By the way, there is a problem that it is difficult to raise and lower the handrail in such a case because it is difficult for the user to operate the operation lever when raising and lowering the handrail body due to the degree of inconvenience of the user's body.

  An object of the present invention is to solve the above-mentioned problems and to provide a undulating handrail capable of raising and lowering a handrail main body without a lever operation and locking the handrail main body in an inclined posture.

The invention described in claim 1
A rotating base portion formed at the base end portion is supported on a housing fixed to the wall surface so that the handrail main body can be rotated in the vertical direction via a horizontal axis, and the handrail main body is generally referred to as a retracted posture in a substantially upright state. A undulating handrail that can be locked in a predetermined inclined posture between the horizontal use posture,
A stopper for restricting the downward movement of the handrail main body from the use posture to the housing, and the handrail main body to be rotatable in the lying down direction from the retracted posture to the use posture, and from the use posture to the retracted posture in the standing direction. A handrail locking mechanism that regulates downward rotation with a predetermined tilting posture when
The handrail locking mechanism is
Energized in the direction in which the locking claw is engaged with the locking groove formed in the rotating base, and the locking claw is engaged in the locking groove, so that only in the direction of the fall of the handrail body. A locking lever that regulates rotation;
A regulating swinging arm that regulates swinging of the locking lever in a direction in which the locking claw is engaged with the locking groove by a regulating operation portion provided in the rotation base in a retracted posture;
And a release lever that releases the restriction of the locking lever by operating the restriction swing arm by a release portion provided in the rotation base in a use posture.

The invention according to claim 2 is the configuration according to claim 1,
The locking lever, the regulating swing arm and the release lever are supported so as to be swingable around the axis parallel to the horizontal axis in the housing,
A restricting claw that engages a restricting portion provided on the locking lever and restricts the swinging of the locking lever only in a direction in which the locking claw is engaged with the locking groove. Provided,
The release lever is provided with a passive hook that can be swung by a release portion, and a release hook that can swing a restriction swing arm and detach the restriction claw from the restriction portion.

The invention described in claim 3 is the configuration described in claim 2,
Between the locking lever and the regulating swing arm, the latching lever is oscillated and biased in the direction in which the latching claw is engaged with the locking groove, and the regulation claw is engaged in the direction in which the regulating claw is engaged with the regulating portion. A coil spring that swings and biases the swing arm is interposed.

The invention according to claim 4 is the configuration according to any one of claims 1 to 3,
The housing is composed of a housing body whose one side surface is open, and a cover body that closes one side surface of the housing body with a fixing screw,
A disc spring is interposed between the rotating base and the housing body or / and the cover body at the outer periphery of the horizontal shaft,
It is possible to adjust the turn-up / down dynamic resistance of the handrail body by tightening the fixing screw.

  According to the first aspect of the present invention, the handrail locking mechanism causes the handrail main body to be in a substantially upright retracted posture, and the locking lever is operated by the restriction operating portion of the rotation base to By engaging the restricting claw of the restricting swing arm, the locking lever is restricted from rotating in the direction in which the locking claw is engaged with the locking groove, thereby allowing the handrail body to fall freely. When a handrail is used, the handrail body is laid down from the retracted posture to obtain a substantially horizontal use posture. In this use posture, the restriction swing arm is operated by the release portion provided on the rotation base to retract the restriction claw from the restriction portion of the release lever, and the restriction of the locking lever is released. Further, when the handrail body is rotated in the standing direction, the locking claw of the locking lever is engaged with the locking groove in a predetermined tilting posture to restrict the downward rotation of the rotating base, and the handrail is tilted. The body can be locked.

  Therefore, the handrail main body can be locked in the inclined posture only by lifting the handrail main body from the use posture in the standing direction without operating the operation lever or the like. Moreover, when returning to a use attitude | position, after rotating to a retracted attitude | position once in a standing direction, it only has to lie down to a use attitude | position.

  According to the second aspect of the present invention, the engagement lever, the restriction swing arm, and the release lever are swingably supported around the horizontal axis, respectively, and the restriction swing arm restricts the restricting portion of the locking lever. Since the restricting claw that engages with the release lever and the passive hook and the release hook are provided on the release lever, the handrail locking mechanism can have a simple structure.

  According to the configuration of the third aspect, the locking lever is oscillated and biased in the direction in which the locking claw is engaged with the locking groove, and the regulation swing arm is moved in the direction in which the regulation claw is engaged with the regulation portion. Since the coil spring for swinging and biasing is interposed, the locking lever and the restricting swing arm can be biased with a small number of parts, and the cost can be reduced.

  According to claim 4, by adjusting the tightening state of the fixing screw, the handrail main body that matches the user's force using the frictional resistance force generated between the housing and the rotating base via the disc spring It can be easily adjusted to increase / decrease resistance.

It is a side view which shows the Example of the raising / lowering type handrail which concerns on this invention. It is a disassembled perspective view which shows a handrail latching mechanism. (A)-(c) is a perspective view of the structural member of a handrail latching mechanism, (a) is a latch lever, (b) is a control rocking arm, (c) is a release lever. It is a cross-sectional view showing a horizontal axis part. It is a side view of the housing which shows the handrail latching mechanism before this which becomes a use posture from a retreat posture, and deleted a cover body. It is the side view of the housing which showed the cover body detached state which shows the handrail latching mechanism of use posture, and deleted the cover body. It is the side view of the housing which showed the handrail locking mechanism of the 1st inclination posture, and deleted the cover body. It is the side view of the housing which showed the handrail locking mechanism of the 2nd inclination posture, and deleted the cover body. It is a side view of the housing which showed the handrail latching mechanism of a retracted attitude, and deleted the cover body.

[Example 1]
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a undulating handrail according to the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the handrail body 11 has a rod portion 11A connected and fixed to a base end mounting portion 11B via a connecting tool such as a screw or a rivet, and a base 12 attached to a housing 12 fixed to a wall surface 10 such as a toilet. A rotation base portion 13 provided in the end mounting portion 11B is supported so as to be rotatable in the vertical direction via horizontal shaft portions (horizontal shafts) 14 and 14. The handrail body 11 has a use posture A that is inclined upward by a use angle θA (1 ° in the drawing) selected from a substantially horizontal direction, that is, a range of 0 ° to 10 °, and a range of about 85 ° to 95 °. 1 is selected from a range of approximately 35 ° to 50 ° upward from the tip end side. A first inclination posture B inclined at an inclination angle θB (43 ° in the figure), and a second inclination angle θC (76 ° in the figure) selected from the range of about 70 ° to 80 ° above the tip side. The two inclined postures C can be locked.

  As shown in FIGS. 2 and 3, the housing 12 is attached by fitting a mounting bolt 19 into the wall surface 10 through the through holes of the upper rear bracket and the lower rear bracket, and one side surface is opened. And a cover body 12B that covers one side surface of the housing main body 12A. Horizontal shaft portions 14 and 14 projecting from both sides at the center of the rotating base 13 are fitted into shaft holes 18A and 18B formed in bottoms on the inner side surfaces of the housing body 12A and the cover body 12B. The rod body 11 is supported between the retracted posture D and the use posture A so as to be rotatable in the vertical direction. The base end attachment portion 11B connected to the rotation base portion 13 protrudes outward from a guide port 15 formed in the housing main body 12A, and the rod portion 11A is supported. A stopper block (stopper) 20 that restricts the downward rotation of the base end attachment portion 11B in the use posture A is provided below the guide port 15 of the housing body 12A. Further, as shown in FIG. 1, the handrail main body 11 includes a support leg 17 that is integrally formed from the base end attachment portion 11 </ b> B and extends below the housing 12, and the lower end portion of the support leg 17 is placed on the wall surface 10 in the use posture A. It can contact | abut and can support the load which concerns on the handrail main body 11. FIG.

  The housing 12 supports the handrail main body 11 so that the handrail main body 11 can be raised and lowered between the retracted posture D and the use posture A, and the handrail main body 11 can be moved between the first inclined posture B and the second inclined posture C without operation of a lever or the like. The handrail locking mechanism 21 that can be locked at each is incorporated. The handrail locking mechanism 21 raises the handrail main body 11 from the use posture A, thereby restricting the downward movement of the handrail main body 11 in the first inclined posture B and the second inclined posture C. The load concerning can be supported. Further, by rotating the handrail main body 11 to the retracted posture D, the handrail locking mechanism 21 can be released, the handrail main body 11 can be released, and the handrail main body 11 can be lowered to the use posture A.

  That is, the handrail locking mechanism 21 includes a first locking groove (locking groove) 31B and a second locking groove (locking groove) 31C formed on the outer periphery of the rotation base 13 of the base end portion of the handrail main body 11. A locking lever 23 supported in a swinging manner around the support shaft portion 23b in the housing 12 so that the locking claw 23a engages with the first and second locking grooves 31B and 31C, and a regulating claw 24a. Engage with the restriction groove (regulation part) 23c of the locking lever 23, and the swinging of the locking lever 23 to the side where the locking claw 23a engages with the first and second locking grooves 31B and 31C is restricted. A regulating rocking arm 24 to be engaged, and a side where the latching claw 23a is engaged with the first and second latching grooves 31B and 31C interposed between the latching lever 23 and the regulating rocking arm 24. And swinging the restricting swing arm 24 to the side where the restricting claw 24a engages with the restricting groove 23c. The restricting swing arm 24 is actuated by the coil spring 22 to be energized and the release pin (release part) 32 provided on the rotation base 13 to release the restricting claw 24a from the restricting groove 23c, and the locking lever 23 is swung. And a release lever 25 for biasing. Further, the release pins 32 projecting from the rotation base 13 are arranged on the left and right side surfaces in the vicinity of the detachment recess 31 </ b> A formed on the outer periphery of the rotation base 13. These release pins 32 allow the release lever 25 to be actuated when the handrail body 11 is in the use posture A, thereby releasing the restriction of the locking lever 23 by the restriction swing arm 24. Further, when the handrail body 11 is in the retracted position D on the pivot base 13, the locking lever 23 is swung in the backward direction, and the rocking lever 23 is swung to the boss 13 side by the regulating rocking arm 24. A regulation convex part (regulation actuating part) 33 for regulation is formed. The first and second locking grooves 31 </ b> B and 31 </ b> C are formed at predetermined angular positions on the outer peripheral portion between the release pin 32 and the restriction convex portion 33.

  The locking claws 23a and the first and second locking grooves 31B and 31C are so-called ratchet claws and ratchet root grooves that allow the handrail body 11 to rotate in the upright direction and restrict rotation in the lying down direction. Is configured. Further, the locking claw 24 a and the regulation groove 23 c regulate the swinging in the forward direction in which the locking lever 23 approaches the rotation base 13, and in the backward direction in which the locking lever 23 is separated from the rotation base 13. The shape of the restricting groove 23c and the engaging claw 24a and the engaging angle are set so that the engaging claw 24a can be separated from the restricting groove 23c when it is swung.

Further, details of the housing 12 and the handrail locking mechanism 21 will be described.
The housing body 12A has screw holes 41A formed on the side surface of the stopper block 20, and screw holes 41B formed on the upper and lower sides of the side surface on the wall surface 10 side, and fixed screws 42A and 42B are formed on the cover body 12B. The cover body 12B is mounted on the open side surface of the housing body 12A by mounting the screw holes 41A and 41B through the holes 12g and 12h, respectively. As shown in FIG. 4, the horizontal shaft portions 14 and 14 of the housing main body 12 </ b> A are rotatably fitted in the shaft holes 18 </ b> A and 18 </ b> B via the cylindrical bush 43. Further, small diameter step portions 14a are formed on both end surfaces of the horizontal shaft portions 14 and 14, respectively, and disc springs 44 and 44 are respectively fitted on the step portions. Further, a pressure ring (washer) 49A that can be externally fitted to the stepped portion 14a and pressurize the disc spring 44 is disposed in the shaft hole 18B of the cover body 12B, and the pressure is applied to the shaft hole 18A of the housing body 12A. A bushing 50 and a pressurizing ring (washer) 49B that can be externally fitted to the stepped portion 14a and pressurize the disc spring 44 are disposed. Further, an adjusting screw shaft 48 having a knurled head is screwed into a female screw hole 18a formed at the bottom axial center position of the shaft hole 18A of the housing body 12A. Therefore, the adjusting screw shaft 48 compresses the disc springs 44 and 44 through the pressure bush 50 and the pressure rings 49A and 49B, thereby reducing the frictional resistance of the horizontal shaft portions 14 and 14 in the shaft holes 18A and 18B. The resistance of raising and lowering the handrail main body 11 can be adjusted. Reference numeral 48 a denotes a lock nut of the adjusting screw shaft 48.

  A pair of left and right release pins 32 projecting at predetermined positions on both sides on the outer peripheral side of the rotating base 13 are arcuate inner surfaces that guide the left and right release pins 32 to the opposing surfaces of the housing body 12A and the cover body 12B, respectively. Guide grooves 45A and 45B are respectively formed.

  As shown in FIGS. 2 and 3 (a), the locking lever 23 is bent into a square shape whose upper surface has a narrow angle when viewed from the side, and a pair of left and right support shafts projecting from the proximal end portion of the rear surface. 23b is fitted into support shaft holes 12a and 12b formed in the inner surfaces of the housing main body 12A and the cover body 12B, and is supported so as to be swingable within a predetermined range. 23a protrudes. Further, a regulation groove 23c is formed near the front side support shaft portion of the locking claw 23a. Further, a pair of left and right locking guide pins 23d that are respectively guided by locking guide holes 46A and 46B formed in the housing main body 12A and the cover body 12B project from the left and right side surfaces of the bent portion. Furthermore, a spring locking convex portion 23e into which the upper end portion of the coil spring 22 is fitted is provided on the back side of the bent portion. 23f is a resin soundproof cover attached from the locking claw 23a along the rear base end side, and a plurality of claw portions 23g protruding from the inner surface of the soundproof cover 23f are connected to the back of the locking lever 23. It can be fitted and attached to the stop hole 23h, and it is possible to reduce a high-pitched metal sound when the locking claw 23a is engaged with the first and second locking grooves 31B and 31C. The restriction groove 23c can be replaced by a protrusion or a recess that can be engaged with the restriction claw 24a.

  As shown in FIGS. 2 and 3B, the regulating swing arm 24 is formed in an L shape having a passive end 24b at one end and a biasing end 24c at the other end in a side view. The support shaft portion 24d protruding from the left and right side surfaces at the central corner is fitted into the support shaft holes 12c and 12d formed on the inner surfaces of the housing main body 12A and the cover body 12B, and can swing within a predetermined range. It is supported. A pair of left and right passive guide pins 24e guided respectively by regulation guide holes 47A and 47B formed in the housing main body 12A and the cover body 12B project from the left and right side surfaces of the passive end 24b of the regulation swing arm 24, and A restricting claw 24 a projects from the upper end side rear surface so as to face the restricting groove 23 c of the locking lever 23. Further, on the upper surface of the urging end, a spring locking convex portion 24f is projected so as to face the spring locking convex portion 23e and into which the lower end portion of the coil spring 22 is fitted.

  As shown in FIGS. 2 and 3 (c), the release lever 25 includes a support shaft portion 25b projecting from the left and right side surfaces of the connecting shaft portion 25a parallel to the horizontal shaft portions 14 and 14 at the center. And are supported in a predetermined range so as to be swingable by being fitted into support shaft holes 12e and 12f formed on the inner surface of the cover body 12B. A pair of L-shaped left and right passive hooks 25c that are projected to the outside of the left and right side surfaces of the rotation base 13 and are operated by the release pin 32 are provided at both left and right ends of the connecting shaft portion 25a, and the passive hooks 25c are symmetrical. A pair of left and right release hooks 25d are provided that protrude outwardly from the left and right side surfaces of the restriction swing arm 24 in the direction (approximately 180 °), abut against the passive guide pin 24e, and swing the restriction swing arm 24. .

The release pin 32 may be a protrusion or other constituent member as long as it can be engaged with the passive hook 25c.
(Description of operation)
The operation of the handrail locking mechanism 21 will be described with reference to FIGS.

  In the retracted posture D shown in FIG. 9, the restricting convex portion 33 provided on the rotation base portion 13 swings in the clockwise direction J that retracts the locking lever 23 against the coil spring 22, and the action of the coil spring 22 The restricting swing arm 24 is swung counterclockwise K, and the restricting claw 24 a is engaged with the restricting groove 23 c of the locking lever 23. Thereby, the rocking | fluctuation of the latching lever 23 to the side which the latching claw 23a engages with the 1st, 2nd latching grooves 31B and 31C is controlled, and the handrail main body 11 can fall down freely. In this retracted posture D, the handrail main body 11 is held on the wall surface 10 by a handrail holder (not shown).

  When the handrail is used, when the handrail holder is released and the handrail main body 11 is laid down and approached to the use posture A, the release pin 32 provided on the rotation base 13 is moved to the release lever 25 as shown in FIG. The release lever 25 is swung counterclockwise G by pushing the passive hook 25c. Accordingly, the release hook 25d pushes the passive guide pin 24e to swing the restriction swing arm 24 in the clockwise direction H, and the restriction claw 24a is detached from the restriction groove 23c. Then, the locking lever 23 is swung in the counterclockwise direction I, and the locking claw 23a is brought into contact with the detaching recess 31A of the rotation base 13 so that the use posture A shown in FIG.

  In this use posture A, the base end mounting portion 11B of the handrail main body 11 is supported by the stopper block 20, and the support legs 17 are brought into contact with the wall surface 10, so that the load on the lower side of the handrail main body 11 is affected by the housing 12 and the wall surface. 10 is supported.

  When the handrail is used in the first inclined posture B, when the handrail main body 11 is lifted from the use posture A in the standing direction and rotated, the locking claw 23a is released from the recess 31A by the rotation of the rotation base 13. The locking lever 23 is swung in the backward direction along the clockwise direction J. Then, by the action of the coil spring 22, the locking lever 23 is oscillated and biased counterclockwise I, and the locking claw 23 a is slid on the outer peripheral surface of the rotating base 13.

  When the first inclined posture B shown in FIG. 7 is reached, the locking lever 23 is swung in the counterclockwise direction I, and the locking claw 23a is engaged with the first locking groove 31B. Thereby, the handrail main body 11 is latched by the 1st inclination attitude | position B, and the downward rotation is controlled.

  Further, when the handrail main body 11 is used as the second inclined posture C, the handrail main body 11 is further rotated in the standing direction from the first inclined posture B. When the rotation base 13 is rotated, as shown in FIG. 8, after the locking claw 23a is detached from the first locking groove 31B, it is engaged with the next second locking groove 31B, and the handrail main body is engaged. 11 is locked in the second inclined posture C.

  Further, when the handrail main body 11 is not used, when the handrail main body 11 is pressed from the second inclined posture C toward the wall surface 10 and rotated, as shown in FIG. 9, the retracted posture D along the wall surface 10 is obtained. 11 is held by a handrail holding tool. At this time, when the locking lever 23 is rotated in the clockwise direction J by the restricting convex portion 33 and retracted and the restricting groove 23c is lowered to the position facing the restricting claw 24a, the restricting swing arm is counterclockwise by the action of the coil spring 22. The restricting claw 24a is fitted in the restricting groove 23c by being rotated in the direction K, thereby restricting the locking lever 23 from swinging toward the turning base 13 side.

(Effect of Example)
According to the above embodiment, the handrail locking mechanism 21 swings the locking lever 23 in the retreating direction by the restricting convex portion 33 of the rotation base 13 by setting the handrail main body 11 to the retracted posture D in the substantially upright state. The restriction claw 24a is engaged with the restriction groove 23c, thereby restricting the swing of the locking lever 23 to the side where the locking claw 23a engages the first and second locking grooves 31B and 31C. Thus, the handrail main body 11 is rotatable in the lying down direction.

  Next, when the handrail main body 11 is lowered from the retracted posture D to the use posture A in a substantially horizontal state, the release lever 25 is swung through the passive hook 25c by the release pin 32, and further, the regulating swing arm by the release hook 25d. By swinging 24 in the backward direction, the restricting claw 24a is detached from the restricting groove 23c of the locking lever 23, and the restriction of the locking lever 23 is released. When the handrail body 11 is further rotated in the standing direction, the locking claws 23a of the locking lever 23 are sequentially engaged with the locking grooves 31B and 31C of the rotating base 13 in the first inclined posture B and the second inclined posture C. Thus, the handrail body 11 can be locked in the first and second inclined postures B and C, respectively.

  Therefore, the handrail main body 11 can be easily locked in the first and second inclined postures B and C simply by lifting the handrail main body 11 in the use posture A from the handrail main body 11 in the upright direction and turning it without lever operation. Further, when returning to the use posture A, after rotating in the standing direction to the retracted posture D, it may be laid down to the use posture A.

  Further, the locking lever 23, the restricting swing arm 24 and the release lever 25 are supported in the housing 1 so as to be swingable around the horizontal support shaft portions 23b, 24d and 25b, respectively. Since the restricting claw 24a that engages with the restricting groove 23c of the stop lever 23 is provided and the passive hook 25c and the release hook 25d are provided on the release lever 25, the handrail locking mechanism 21 can have a simple structure.

  Further, the locking lever 23 is oscillated and biased in the direction in which the locking claw 23a engages the first and second locking grooves 31B and 31C, and the regulating claw arm 24a is moved to the regulating groove 23c. Since the coil spring 22 that oscillates and urges in the engaging direction is interposed, the locking lever 13 and the restricting oscillating arm 24 can be oscillated and energized with a small number of parts, thereby reducing costs. it can. Of course, instead of the coil spring 22, a coil spring fitted to the support shaft portion 23 b of the locking lever 23 or the support shaft portion 24 d of the regulating swing arm 24 may be used.

  Furthermore, since the disc springs 44A and 44B fitted to the horizontal shaft portions 14 and 14 are provided between the housing main body 12A and the rotation base 13 and / or between the cover body 12B and the rotation base 13, the fixing screws By simply adjusting 42A, the frictional resistance for raising and lowering the handrail body 11 can be increased or decreased, and the turning resistance of the handrail body 11 can be adjusted according to the user's force.

A Use posture B First tilt posture C Second tilt posture D Retraction posture 11 Handrail main body 12 Housing 12A Housing main body 12B Cover body 13 Rotating base 14 Horizontal shaft portion (horizontal shaft)
17 Support legs 18A, 18B Shaft hole 20 Stopper block (stopper)
21 Handrail Locking Mechanism 22 Coil Spring 23 Locking Lever 23a Locking Claw 23b Support Shaft 23c Restricting Groove 23d Locking Guide Pin 23e Spring Locking Protrusion 24 Regulating Swing Arm 24a Regulating Claw 24b Passive End 24c Energizing End 24d Support shaft portion 24e Passive guide pin 25 Release lever 25a Connection shaft portion 25b Support shaft portion 25c Passive hook 25d Release hook 31A Detachment recess 31B First locking groove 31C Second locking groove 32 Release pin (release portion)
33 Restriction convex part (regulation action part)
41A, 41B Screw holes 42A, 42B Fixed screws 43A, 43B Bearing bushes 44A, 44B Belleville springs 45A, 45B Inner surface guide grooves 46A, 46B Locking guide holes 47A, 47B Restriction guide holes

Claims (4)

A rotating base portion formed at the base end portion is supported on a housing fixed to the wall surface so that the handrail main body can be rotated in the vertical direction via a horizontal axis, and the handrail main body is generally referred to as a retracted posture in a substantially upright state. An undulating handrail that can be locked in an inclined posture between the horizontal use posture,
A stopper for restricting the downward movement of the handrail main body from the use posture to the housing, and the handrail main body to be rotatable in the lying down direction from the retracted posture to the use posture, and from the use posture to the retracted posture in the standing direction. A handrail locking mechanism that regulates downward rotation with a predetermined tilting posture when
The handrail locking mechanism is
Energized in the direction in which the locking claw is engaged with the locking groove formed in the rotating base, and the locking claw is engaged in the locking groove, so that only in the direction of the fall of the handrail body. A locking lever that regulates rotation;
A regulating swinging arm that regulates swinging of the locking lever in a direction in which the locking claw is engaged with the locking groove by a regulating operation portion provided in the rotation base in a retracted posture;
A undulating handrail, comprising: a release lever that releases the restriction of the locking lever by operating the restriction swing arm by a release part provided in the rotation base in a use posture. The locking lever, the regulating swing arm and the release lever are supported so as to be swingable around the axis parallel to the horizontal axis in the housing,
A restricting claw that engages a restricting portion provided on the locking lever and restricts the swinging of the locking lever only in a direction in which the locking claw is engaged with the locking groove. Provided,
2. The release lever is provided with a passive hook that can be swung by a releasing portion, and a release hook that can swing a restricting swing arm and detach the restricting claw from the restricting portion. The undulating handrail described. Between the locking lever and the regulating swing arm, the latching lever is oscillated and biased in the direction in which the latching claw is engaged with the locking groove, and the regulation claw is engaged in the direction in which the regulating claw is engaged with the regulating portion. The undulating handrail according to claim 2, wherein a coil spring for swinging and energizing the swing arm is interposed. The housing is composed of a housing body whose one side surface is open, and a cover body that closes one side surface of the housing body with a fixing screw,
A disc spring is interposed between the rotating base and the housing body or / and the cover body at the outer periphery of the horizontal shaft,
The undulating handrail according to claim 1 or 2, wherein the turning resistance of the handrail main body can be adjusted by tightening a fixing screw.

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