A kind of handrail turning device
Technical field
The present invention relates to a kind of armrest, particularly relate to a kind of handrail turning device being applied to footbath chair.
Background technology
Seat-assembly for footbath chair is typically provided with handrail, and handrail is fixedly connected on seat support usually, or can rotate between use location and stowed position relative to seat support.In use location, handrail is basically perpendicular to backrest and can supports the arm of user.In stowed position, handrail is basically parallel to backrest and enters to allow user or leave seat.Fixing handrail seat is not easy to user and enters or leave, and particularly for this seat being also provided with other devices above of footbath chair, turnover handrail particular importance is popular to people.And the turnover seat of current handrail exists that handrail turning device part is more, complex structure and awkward problem.
Summary of the invention
The present invention is intended to solve above-mentioned mentioned technical problem, provides the handrail turning device that a kind of part is few, structure is simple, easy to use.
The present invention is realized by following technical scheme:
A kind of handrail turning device, comprise seat support and handrail, seat support is connected by clutch shaft bearing rotationally with handrail, what described clutch shaft bearing comprised be bolted is fixed on the clutch shaft bearing lid on seat support and is bolted the second bearing cap be fixed on handrail, and the ball collar be arranged between clutch shaft bearing lid and the second bearing cap, described ball collar is arranged by several balls and forms, described clutch shaft bearing lid and/or the second bearing cap are provided with the ring raceway of accommodating described ball collar, and clutch shaft bearing lid is connected by connecting axle rotationally with the second bearing cap; Second bearing cap is provided with fixed leg on the end face towards clutch shaft bearing lid, and clutch shaft bearing covers to be provided with and carries out spacing limited post to fixed leg.
Further, described handrail is provided with the first groove of accommodating second bearing cap.
Further, described connecting axle comprises supporting clutch shaft bearing lid and the support of the second bearing cap, the first threaded portion being separately positioned on support two ends and the second threaded portion, is arranged on compressed part between the first threaded portion and support, described compressed part is crimped on the outer surface of clutch shaft bearing lid, the threaded fastener coordinated with the second threaded portion is crimped on the outer surface of the second bearing cap, and the first threaded portion is fixed on seat support by round nut.
Further, described clutch shaft bearing covers the second groove of accommodating compressed part.
Further, described compressed part and clutch shaft bearing lid are welded and fixed.
Further, between described second bearing cap and threaded fastener, be also provided with the second bearing, handrail be provided with the 3rd groove with the second bearing close-fitting.
Further, described second threaded portion and threaded fastener are welded and fixed.
Further, the quantity of described limited post is 3, and limited post is threaded connection and is fixed on seat support.
Further, the quantity of described fixed leg is 3, and fixed leg is threaded connection and is fixed on handrail, and clutch shaft bearing covers and be provided with the through hole allowing fixed leg to enter on the position of each fixed leg corresponding.
Further, described 3 limited posts and 3 fixed leg all circumferentially uniform settings, each through hole described is arranged on the centre of two limited posts.
Beneficial effect is: a kind of handrail turning device connects seat support and handrail by rotating clutch shaft bearing, and the limited post that cooperatively interacts and fixed leg are set in clutch shaft bearing to control the angle of handrail upset, compared with prior art, part is few, structure is simple, easy to use.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of clutch shaft bearing of the present invention.
Detailed description of the invention
As Figure 1-Figure 2, a kind of handrail turning device, comprise seat support 1 and handrail 2, seat support 1 is connected by clutch shaft bearing 3 rotationally with handrail 2, what described clutch shaft bearing 3 comprised be bolted is fixed on the clutch shaft bearing lid 31 on seat support 1 and is bolted the second bearing cap 32 be fixed on handrail 2, and the ball collar 37 be arranged between clutch shaft bearing lid 31 and the second bearing cap 32, described ball collar 37 is arranged by several balls and forms, described clutch shaft bearing lid 31 and/or the second bearing cap 32 are provided with the ring raceway of accommodating described ball collar 37, clutch shaft bearing lid 31 is connected by connecting axle rotationally with the second bearing cap 32, second bearing cap 32 is provided with fixed leg 35 on the end face towards clutch shaft bearing lid 31, and clutch shaft bearing lid 31 is provided with and carries out spacing limited post 34 to fixed leg 35.Limited post 34 maintains static, and fixed leg 35 is followed the rotation of handrail 2 and rotates, and connecting axle is arranged on the center of clutch shaft bearing lid 31 and the second bearing cap 32.When arranging the line of limited post 34 with connecting axle and being basically perpendicular to backrest, fixed leg 35 is circumferentially crimped on this limited post 34, and handrail 2 is basically perpendicular to backrest and can supports the arm of user.When arranging the line of limited post 34 with connecting axle and being basically parallel to backrest, fixed leg 35 is circumferentially crimped on this limited post 34, and handrail 2 is basically parallel to backrest and enters to allow user or leave seat.
In order to reduce resistance when handrail 2 rotates, handrail 2 is provided with the first groove of accommodating second bearing cap 32.
Connecting axle comprises supporting clutch shaft bearing lid 31 and the support 331 of the second bearing cap 32, the first threaded portion 332 being separately positioned on support 331 two ends and the second threaded portion 333, is arranged on compressed part 334 between the first threaded portion 332 and support 331, described compressed part 334 is crimped on the outer surface of clutch shaft bearing lid 31, the threaded fastener coordinated with the second threaded portion 333 is crimped on the outer surface of the second bearing cap 32, and the first threaded portion 332 is fixed on seat support 1 by round nut.
Clutch shaft bearing lid 31 there is the second groove of accommodating compressed part 334.Compressed part 334 and clutch shaft bearing lid 31 are welded and fixed.Also be provided with the second bearing 36 between second bearing cap 32 and threaded fastener, handrail 2 be provided with the 3rd groove with the second bearing 36 close-fitting.Second threaded portion 333 is welded and fixed with threaded fastener.The two ends of connecting axle are weldingly fixed on clutch shaft bearing 3, effectively can prevent the parts slippage of clutch shaft bearing 3, improve the reliability of clutch shaft bearing 3.Second bearing 36, for supporting handrail 2, reduces the stressed of the threaded connector be connected with handrail 2, improves bonding strength.
In the present embodiment, the quantity of limited post 34 is 3, and limited post 34 is threaded connection and is fixed on seat support 1.The quantity of fixed leg 35 is 3, and fixed leg 35 is threaded connection and is fixed on handrail 2, and clutch shaft bearing lid 31 is provided with the through hole 311 allowing fixed leg 35 to enter on the position of each fixed leg 35 corresponding.3 limited posts 34 and 3 fixed leg 35 all circumferentially uniform settings, each through hole 311 described is arranged on the centre of two limited posts 34.Above-mentionedly also can be understood as, 3 limited posts 34 and 3 fixed legs 35 are hexagon socket head cap screw, two groups of 6 hexagon socket head cap screw average marks, two groups of hexagon socket head cap screws towards the opposite.Two groups of hexagon socket head cap screws are fixedly connected with seat support 1, handrail 2 after being each passed through clutch shaft bearing lid 31, second bearing cap 32, the head of two groups of hexagon socket head cap screws is all between clutch shaft bearing lid 31 and the second bearing cap 32, undertaken spacing by the mutual crimping between the head of two groups of hexagon socket head cap screws, control the position of handrail 2.
Installation method is: be contained in advance by 3 limited posts 34 in mounted clutch shaft bearing 3, and 3 fixed legs 35 are fastened on handrail 2 through through hole 311 rear thread, and then 3 limited posts 34 and the first threaded portion 332 are fixed on seat support 1 by round nut.
Above embodiment is only not limited in order to technical scheme of the present invention to be described, all do not depart from spirit and scope of the invention any amendment or equivalently to replace, it all should be encompassed in the scope of technical solution of the present invention.