JP6534978B2 - Telescopic handrail - Google Patents

Description

  The present invention relates to a telescopic handrail for constituting a handrail.

  2. Description of the Related Art Conventionally, as a handrail for nursing care mainly for people with disabilities and elderly people, a telescopic handrail configured using a telescopic member including, for example, a large diameter pipe and a small diameter pipe has been known. For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2001-107530), in a handrail configured from a telescopic handrail main body, the telescopic handrail main body is provided with the detachable function tool 6 at one end of the telescopic handrail main body. An invention is disclosed that prevents the rapid contraction of the Further, according to Patent Document 2 (Japanese Patent Application Laid-Open No. 2007-111429), in the handrail for a bathtub, the small diameter pipe 9 is locked to the large diameter pipe 7 so as not to be able to move up and down. An arrangement with a locking device 13 is disclosed.

  By constructing a handrail by combining such telescopic handrails in the longitudinal direction and the lateral direction, the handrail can be installed without leaving a trace of installation in a building etc., and it flexibly supports installation places of various sizes. can do.

Patent document 1: JP-A-2001-107530 JP 2007-111429

  By the way, when assembling such a handrail, it is necessary to extend and contract an extension handrail and to fix the length, after adjusting the length appropriately. However, at the time of such length adjustment operation, since the expansion and contraction member can be freely expanded and contracted, the adjustment operation is difficult, and there is also a possibility that the small diameter pipe may be dropped from the large diameter pipe constituting the expansion and contraction member. Moreover, if the lock tool 13 as described in Patent Document 2 is provided, the resistance to the connecting handrail becomes too large (at the time of insertion), and there is also a problem of deterioration of the frictional force due to deterioration and wear.

  The present invention has been made in consideration of the above circumstances, and an object thereof is to provide a telescopic handrail capable of stably and safely performing a length adjustment operation.

The present invention comprises a large diameter handrail member having a hollow portion, a small diameter handrail member slidably inserted into the hollow portion of the large diameter handrail member from one end, and the small diameter handrail. A telescopic handrail comprising a damper member provided at the one end of the member, wherein the damper member is a large diameter portion abutting on the inner peripheral surface of the large diameter handrail member, and the small diameter hand A small diameter portion disposed in the sliding member; a damper member side locking portion provided in the small diameter portion and locked to the handrail member side locking portion provided in the small diameter handrail member; e Bei and a biasing means for biasing the large diameter portion toward the inner circumferential surface of the thick径手sliding member,
The damper member includes a plurality of division members divided along the longitudinal direction of the telescopic handrail, and the biasing unit is disposed between the plurality of division members to mutually divide the plurality of division members. The small diameter handrail member includes a locking hole as the handrail member side locking portion, and the damper member is engaged with the damper member side on the outward surface of the divided member. A protrusion is provided as a stop, and the large diameter portion of the plurality of divided members is pressed against the inner circumferential surface of the large handrail member by the biasing force of the biasing means. The projection is adapted to be locked in the locking hole.

According to the present invention, the damper member (for example, the damper member 20) is provided between the large diameter handrail member (for example, the large diameter handrail member 11) and the small diameter handrail member (for example, the small diameter handrail member 12) The damper member is engaged with the small-diameter handrail member by locking the damper member side locking portion (for example, the projection 28 and the spring pin 32) and the handrail member side locking portion (for example, the locking hole 15 and the locking hole 33). In the stopped state, the large diameter portion (for example, the large diameter portion 26) of the damper member is biased against the inner peripheral surface (for example, the inner peripheral surface 11C) of the large diameter handrail member (for example, coil spring 25) Therefore, when the small diameter handrail member slides against the large diameter handrail member (the expansion and contraction of the expansion and contraction handrail), the contact portion of the damper member and the large diameter hand Moderately due to the friction caused by the contact of the inner circumferential surface of the sliding member Resistance is given. In this case, the resistance to sliding (expansion and contraction) can be appropriately set by adjusting the biasing force of the biasing means. Therefore, expansion and contraction (length adjustment) of the expansion and contraction handrail can be performed stably, and during the adjustment operation, the unintended rapid expansion and contraction of the expansion and contraction handrail, and the large diameter handrail member 11 of the small diameter handrail member Can be properly prevented from falling off, and the safety of work can be ensured.

  In addition, even if there is a slight dimensional error between the size of the hollow portion of the large diameter handrail member and the outer diameter size of the small diameter handrail member (the outer diameter size of the small diameter handrail member is too small), The dimensional error is absorbed by the presence of the damper member, and the small diameter handrail member can be stably held relative to the large diameter handrail member. That is, even if the inner diameter of the large diameter handrail member or the size of the dividing member (for example, the large diameter portion 26 of the dividing member 21) varies, the biasing means spreads the dividing member, so that the dimensional error is absorbed. In addition, the necessary frictional force can be obtained even if the divided member wears.

Further, the damper member is composed of a plurality of divided members (for example, a pair of split members 21), at the time of insertion into the top径手sliding member of the damper member, approach each other against the biasing force a plurality of divided members Since the outer diameter of the insertion portion of the damper member is reduced, the damper member can be easily inserted into the small diameter handrail member. Further, the contact portion of each divided member can be pressed by an urging means against the inner peripheral surface of the large diameter handrail member with a simple urging force.

Further, the protruding portion as a damper-side locking portion includes a (e.g. protrusions 28) is provided with a locking hole (e.g. the locking hole 15) as a handrail member side locking portion, the damper member is engaging protrusions Since the small diameter handrail member is securely fixed by the locking to the stop hole, it is possible to securely prevent the detachment with a small number of parts.

BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows the whole structure of the assembly structure comprised using the expansion-contraction handrail in 1st Embodiment of this invention. Sectional drawing which shows the whole structure of expansion-contraction handrail. Sectional drawing which shows a part of expansion-contraction handrail. The top view which shows the edge part of a damper member and a small diameter handrail member. The side view which shows the end part of a damper member and a small diameter handrail member. Sectional drawing which shows a part of expansion-contraction handrail in the reference example of this invention.

  Hereinafter, an embodiment of the present invention will be described based on the attached drawings.

  In FIG. 1, the whole structure of the assembly structure 1 comprised using the expansion-contraction handrail 10 for connection in embodiment of this invention is shown. As illustrated, the assembly structure 1 includes a plurality of telescopic handrails 2 for columns, which are a plurality of longitudinal rail members, and a telescopic handrails 10 for connection, which is a plurality of lateral rail members. In the present embodiment, the telescopic handrail 10 for connection and the telescopic handrail 2 for support are configured by the telescopic handrail of the present invention.

  The support telescopic handrail 2 is a rod-like member extending in the vertical direction. The support telescopic handrail 2 includes a large diameter handrail member 2B having a hollow portion, a small diameter handrail member 2A slidably inserted from the lower end into the hollow portion of the large diameter handrail member 2B, and a small diameter. It includes a damper member (not shown) provided at the lower end of the handrail member 2A, and a fixing member 2C for fixing the small diameter handrail member 2A with an appropriate length. The upper and lower ends of the telescopic handrail 2 for a column are fixed to the ceiling 4 via the upper fixing tool 3 and to the floor 6 via the lower fixing tool 5 respectively, thereby the building ceiling 4 and the floor It is installed in a state of tension between six. A damper member is attached to the opening of the lower end portion of the small-diameter handrail member 2A.

  The connection telescopic handrail 10 (horizontal direction rail member) extends horizontally in a state where the length (the amount of expansion and contraction) is adjusted between the adjacent telescopic handrails 2 for columns. Both ends of the connection telescopic handrail 10 are attached to the support telescopic handrail 2 via a joint 7. As a result, the adjacent support telescopic handrails 2 are connected by the connecting telescopic handrails 10.

  As shown in FIG. 2, the connection telescopic handrail 10 includes a large-diameter handrail member 11 in the shape of a pipe (cylinder) and a small-diameter handrail member 12 in the shape of a pipe (cylinder) as well. The outer diameter of the small diameter handrail member 12 is slightly smaller than the inner diameter of the large diameter handrail member 11. The small diameter handrail member 12 is introduced from the front end portion 12A to the opening of the rear end portion 11A of the large diameter handrail member 11, and is slidably inserted into the hollow portion 11B of the large diameter handrail member 11. . With such a configuration, by changing the insertion amount of the small diameter handrail member 12 with respect to the large diameter handrail member 11, it is possible to adjust the overall length of the connecting telescopic handrail 10.

  In addition, the length (the insertion position of the small diameter handrail member 12 with respect to the large diameter handrail member 11) of the adjusted telescopic handrail 10 for connection is reliably fixed by fixing means (not shown) such as a screw. You may do so.

  A joint portion 13 is provided on the front end side of the large diameter handrail member 11, and a joint portion 14 is provided on the rear end side of the small diameter handrail member 12. Thereby, the telescopic handrail 10 for connection is attached with respect to the joint 7 in the joint parts 13 and 14 of both sides.

  A damper member 20 is attached to the opening 12 B of the front end 12 A of the small diameter handrail member 12. As will be described later in detail, this function acts to give an appropriate resistance (squeezing) to the sliding of the small diameter handrail member 12 with respect to the large diameter handrail member 11 (the expansion and contraction of the connecting telescopic handrail 10).

  As shown in detail in FIGS. 3 to 5, the damper member 20 is configured by connecting a pair of divided members 21 via a flexible connecting portion 22. The pair of dividing members 21 is a member having the same size and the same shape, and is disposed with the inward surfaces 23 facing each other.

  The inward surface 12 of each divided member 21 is provided with a spring seat 24 which is a circular recess, and both side ends of a coil spring 25 which is a compression spring are attached to these spring seats 24. There is. Thus, the coil spring 25 acts as biasing means for biasing the pair of split members 21 apart from each other.

  A substantially semi-cylindrical large-diameter portion 26 and a substantially semi-cylindrical small-diameter portion 27 are provided on the outward surface of each divided member 21. The large diameter portion 26 and the small diameter portion 27 have dimensions corresponding to the inner diameters of the large diameter handrail member 11 and the small diameter handrail member 12, respectively, and the division member 21 is biased by the coil spring 25. The inner circumferential surface 11C of the large diameter handrail member 11 and the inner circumferential surface 12C of the small diameter handrail member 12 are in contact with each other in a state of being pressed.

  A substantially cylindrical protrusion 28 is provided on the outward surface of each divided member 21. On the other hand, near the front end portion 12A of the small diameter handrail member 12, a pair of locking holes 15 are formed at positions corresponding to the protrusions 28 of the dividing member 21, and the inner periphery of the small diameter handrail member 12 is formed. It penetrates from the surface to the outer peripheral surface. The locking hole 15 is a hole to which the projection 28 of the dividing member 21 is locked. When the dividing member 21 is biased by the coil spring 25, the projection 28 is engaged with the small diameter handrail member 12. It is held in the state of being locked in the stop hole 15. Thus, the dividing member 21 is securely fixed to the small diameter handrail member 12.

  When the damper member 20 is mounted on the small diameter handrail member 12, the rear end portion of the large diameter portion 26 abuts on the front end portion 12A of the small diameter handrail member 12. Therefore, the damper member 20 is entirely thin. It does not enter into the handrail 12.

  With such a configuration, the damper member 20 is fixed to the small diameter handrail member 12 by the locking of the projection 28 in the locking hole 15, while the large diameter portion 26 of the large diameter handrail member 11 It abuts on the inner circumferential surface 11C in a state of being biased by the coil spring 25. Thereby, with respect to the sliding of the small diameter handrail member 12 with respect to the large diameter handrail member 11, the friction between the large diameter portion 26 of the damper member 20 and the inner circumferential surface 11C of the large diameter handrail member 11 Moderate resistance is given. In this case, the resistance to sliding (expansion and contraction) can be appropriately set by adjusting the spring force of the coil spring 25. Therefore, the expansion and contraction (length adjustment) of the expansion and contraction handrail 10 for connection can be performed stably, and unintended rapid expansion and contraction of the expansion and contraction handrail 10 for connection and the small diameter handrail member 12 can be performed during the adjustment operation. Falling from the thick handrail member 11 can be appropriately prevented, and the safety of the operation can be ensured.

  Moreover, even if there is a slight dimensional error between the inner diameter of the large diameter handrail member 11 and the outer diameter of the small diameter handrail member 12 (the outer diameter of the small diameter handrail member 12 is too small), this dimensional error is A secondary effect is also obtained that the small diameter handrail member 12 is stably held with respect to the large diameter handrail member 11 by being absorbed by the presence of the damper member 20. That is, even if there is variation in the inner diameter of the large diameter handrail member 11 or the size of the divided member 21 (large diameter portion 26), the coil spring 25 spreads the divided member 21 so that dimensional error is absorbed, and Even when the dividing member 21 (large diameter portion 26) is worn, the necessary frictional force can be obtained.

In FIG. 6, a part of expansion-contraction handrail in the reference example of this invention is shown. In the present reference example , only a part of the first embodiment is changed, and therefore, the members common to the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As illustrated, in the present reference example , a damper member 30 is used instead of the damper member 20 in the first embodiment. Each divided member 21 of the damper member 30 has a pin hole 31 penetrating at a position where the protrusion 28 is provided in the damper member 20 instead of having the protrusion 28 in the damper member 20, Spring pins 32 are inserted through the pin holes 31. Further, instead of the locking hole 15 in the first embodiment, a locking hole 33 of a size corresponding to the diameter of the spring pin 32 is formed in the small diameter handrail member 12. Both ends are inserted into the locking holes 33 and locked.

  With such a configuration, the damper member 30 is attached to the small diameter handrail member 12 so as not to drop off. Thus, the locking of the damper member 30 to the small-diameter handrail member 12 may be performed by a pin, or alternatively, at least one of the locking holes 33 may be screwed. .

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment, In the range described in the claim, an appropriate | suitable change is possible. For example, in the above embodiment, the coil spring 25 which is a compression spring is used as the urging means, but in the form of the urging means, the contact portion (large diameter portion 26) of the damper member It will not be limited in particular, as long as it is biased toward the inner circumferential surface 11C. For example, as a biasing means, a spring of a form other than a coil spring such as a leaf spring may be used, or an elastic body such as rubber may be used.

In the above embodiment, the projection 28 is used as the damper member side locking portion, and the locking hole 15 is used as the handrail member side locking portion. However, the damper member side locking portion and the handrail member side locking portion The present invention is not limited to such a form, and any form can be deviated as long as the damper member 20 and the small-diameter handrail member 12 are locked. For example, a locking hole (a recess formed in the inner peripheral surface 12C of the small-diameter handrail member 12) other than a through hole may be used as the handrail member side locking portion .

  Moreover, in the said embodiment, although the damper member 20 was comprised from a pair of division member 21, this invention is not limited to such a form, A damper member may also be comprised from three or more division members It is possible.

  Moreover, in the said embodiment, although the small diameter handrail member 12 was made into the pipe-shaped member, this invention is not limited to such a form, The small diameter handrail member is mounted | worn with the damper member 20 For example, a solid rod shape may be used as long as the opening 12C is provided.

  The present invention can be used for handrails attached to various buildings and the like.

DESCRIPTION OF SYMBOLS 1 Assembled structure 2 Telescopic handrail for pillars 3 Upper fixing member 4 Ceiling 5 Lower fixing member 6 Floor 7 Joint 10 Telescopic handrail 11 for connection Large diameter handrail member 11A Rear end 11B Hollow portion 11C Inner circumferential surface 12 Thin Diameter handrail member 12A Tip portion 12B Opening 12C Inner circumferential surface 13 Joint portion 14 Joint portion 15 Locking hole 20 Damper member 21 Division member 22 Connection member 23 Inward surface 24 Spring seat 25 Coil spring 26 Large diameter portion 27 Small diameter Part 28 Protrusion part 30 Damper member 31 Pin hole 32 Spring pin 33 Locking hole

Claims (1)

A large diameter handrail member having a hollow portion, a small diameter handrail member slidably inserted into the hollow portion of the large diameter handrail member from one end thereof, and the one side of the small diameter handrail member A telescopic handrail provided with a damper member provided at the end of the
The damper member is provided on the large diameter portion in contact with the inner circumferential surface of the large diameter handrail member, the small diameter portion disposed in the small diameter handrail member, and the small diameter portion, and the small diameter handrail A damper member side locking portion locked to a handrail member side locking portion provided to a member, and an urging means biasing the large diameter portion toward the inner peripheral surface of the large diameter handrail member for example Bei the door,
The damper member includes a plurality of divided members divided along the longitudinal direction of the telescopic handrail,
The biasing means is disposed between the plurality of dividing members to bias the plurality of dividing members in a direction away from each other.
The small diameter handrail member includes a locking hole as the handrail member side locking portion,
The damper member has a protrusion on the outward surface of the dividing member, which is engaged with the engagement hole as the damper member-side engagement part.
The large diameter portions of the plurality of divided members are pressed against the inner peripheral surface of the large diameter handrail member by the biasing force of the biasing means, and the projection is locked in the locking hole. and that expansion and contraction handrail.

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