CN2217526Y

CN2217526Y - Caster wheel

Info

Publication number: CN2217526Y
Application number: CN 94247517
Authority: CN
Inventors: 杨素华
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-03
Filing date: 1994-12-03
Publication date: 1996-01-17
Anticipated expiration: 2004-12-03

Abstract

The utility model relates to a caster wheel which comprises a main body, a transverse shaft, two wheel members and an elastic element. The utility model is characterized in that an arc block is respectively formed on two end surfaces of a pivot hole of the main body; a first braking part is arranged on a concave arc surface below each arc block. A second braking part is arranged on the peripheral surface of a shaft pipe part of each wheel member; the second braking part can be contacted with the first braking part to generate friction force for preventing the wheel members from rotating when the main body is pressed down.

Description

Castor

The utility model is relevant with castor, specifically, is to relate to a kind of furniture caster wheeles such as baby carrier or child safety chair that can be applicable to.

Be provided with a castor at bottom four corners of commonly using baby carrier, give allocation so that baby carrier passed.Yet if when the ground of being put is uneven, perambulator regular meeting moves toward lower voluntarily, if when the baby is put in the baby carrier the inside, it is surprised promptly can to allow this baby be subjected to, even the accident of causing danger.

The purpose of this utility model is to provide a kind of castor, can be installed on the bottom of baby carrier, so that can at random move or promote during empty bed, and in the baby is placed in this baby carrier the time, castor promptly forms stationary state and can not roll, make baby carrier remain on the location, reason ground is uneven or be subjected to the collision of external force and slippage arbitrarily:

A kind of castor provided by the utility model, include: a main body, the one side is pivoted with a jack-post, and the central authorities of bottom then up offer a downward opening room, offer a pivot hole again in the bottom center top, the truncation surface in this pivot hole is to be the ellipse garden of vertical long shape; One transverse axis, its stage casing are hubbed in the pivot hole of this main body; Two-wheeled spare is hubbed on this transverse axis two ends respectively, and its medial surface forms a central siphon portion; One pushes up the part of pulling, and is located at the top, stage casing of this transverse axis, and it has a dish portion, and the bottom surface of dish portion forms an arc groove, and end face up extends a cylinder, and this groove fits like a glove and is attached to transverse axis stage casing end face; And an elastic element, being placed in the room of main body, its top holds at the room roof, the bottom then withstands in the dish portion of the part of pulling, this cylinder inserts intersegmental part under elastic element, and utilize its elasticity with this transverse axis toward pressing down, make this transverse axis stage casing move down into pivot hole hypomere end position; The both ends of the surface top in the pivot hole of this main body respectively forms an arc piece, and the cancave cambered surface of this arc piece below is provided with one first stopper portion; This is taken turns on the outer peripheral face of central siphon portion of part and then is provided with the second stopper portion, can be when main body be pressed down and this first stopper portion form wipe contact.

One preferred embodiment below is provided and structural attitude of the present utility model and effect is explained in detail in conjunction with some accompanying drawings.In the accompanying drawing:

Fig. 1 is an exploded perspective view of the present utility model.

Fig. 2 is the side plan view of main body of the present utility model.

Fig. 3 is the flat sheet of the bottom view of main body of the present utility model.

Fig. 4 is the cross section view of the utility model combination back according to the long axis direction of transverse axis.

Fig. 5 is the cross section view of the utility model combination back according to the radial direction of transverse axis.

The similar Fig. 4 of Fig. 6, the action situation after demonstration the utility model is stressed.

The similar Fig. 5 of Fig. 7, the action situation after demonstration the utility model is stressed.

Fig. 8 is the structural representation of second kind of embodiment of the utility model.

Fig. 9 is the structural representation of the third embodiment of the utility model.

Please referring to shown in the accompanying drawing 1 to 7, castor provided by the utility model comprises: main body 10, transverse axis 20, two-wheeled spare 30, top supporting part 40, elastic element 50 and gag 60, wherein:

This main body 10 is injection molding with plastic material.The one side is pivoted with a jack-post 11 that is erectility, so that the utility model is hubbed on baby carrier bottom four corners.Up offer a downward opening garden tubular room 13 from the central authorities of the bottom 12 of main body 10.12 central upper types are offered a pivot hole 14 in the bottom, and the truncation surface in this pivot hole 14 is to be major axis to be in perpendicular to ground-surface ellipse garden.Respectively form an arc piece 15 in the both ends of the surface top in this pivot hole 14 in addition, the cancave cambered surface of these arc piece 15 belows is provided with the first stopper portion 151, and this first stopper portion 151 adopts the brake cladding to be attached on it.

The stage casing of this transverse axis 20 is hubbed in the pivot hole 14 of this body 10.

This two-wheeled spare 30 is hubbed on this transverse axis 20 two ends respectively, and its medial surface forms central siphon portion 31.Outer section side face of this central siphon portion 31 is provided with the second stopper portion 32, and this second stopper portion 32 adopts the brake cladding mode that is sticked.

This top part 40 of pulling is located at the stage casing top of this transverse axis 20, and it has a dish portion 41.The bottom surface of dish portion 41 forms an arc groove 42, and end face up extends a cylinder 43, and this groove 42 just coincide and is attached on these transverse axis 20 stage casing end faces.

This elastic element 50 is to adopt compression spring, is placed in the room 13 of this main body 10, and it is held in the roof of room 13, and the bottom then withstands on dish portion 41 end faces of the part 40 of pulling.Make its location firm by this column piece 43, and with its elasticity indirectly with this transverse axis 20 toward pressing down, make these transverse axis 20 stage casings be positioned at the hypomere in pivot hole 14.

This gag 60 is to be located in room 13 lower opening of main body 10 with suitable tightness plug.

Under normal condition, this takes turns second portion of stopper portion 32 of part 30 and the first stopper portion, the 151 separated attitudes of main body 10, so this two-wheeled spare 30 is the slip rolling condition, the user can be pushed to desired location arbitrarily with baby carrier.When the user that waits is put into the baby carrier the inside to child (baby), baby's weight W promptly can overcome the expansion force of this elastic element 30, entire body 10 is forced decline by weight W, elastic element 50 is compressed, because of transverse axis 20 and two-wheeled spare 30 motionless in position, so the first stopper portion 151 of this main body 10 will be contacted with the second stopper portion 32 of wheel part 30, make this two-wheeled spare 30 not rotate again, then baby carrier also is positioned and can not be pushed or slippage again.

When child taken in one's arms leave baby carrier after, this elastic element 50 promptly up pushes up back original position by its expansion force with main body 10, the second stopper portion 32 is promptly left by this first stopper portion 151, baby carrier promptly reverts to the state of can passing.

The utility model caster wheel still can be applicable on the child safety seat; that is: in the chair bottom that children sit usefulness the predetermined number caster wheel is set; so; when children one sit on this chair; children's body weight can allow castor be can not rotary state; protect children's safety whereby, must be after children leave seat, chair just can revert to the slip state.

Fig. 8 is the structural representation of second embodiment of the present utility model, the difference of itself and above-mentioned first kind of embodiment is: on the concave arc of arc piece 15 belows of this main body 10 embossing is set, as the first stopper portion 151, section side face then also is provided with embossing relatively as the second stopper portion 32 outside this takes turns the central siphon portion 31 of part 30, and the friction force when utilizing this two embossing to be in contact with one another makes wheel part 30 form can not mobile status.

Fig. 9 is the third new embodiment of this practicality, it is in arc piece bottom surface and central siphon portion 31 outer peripheral faces respectively form triangular shape pointed tooth portion respectively as the first stopper portion 151 and the second stopper portion 32, and this first and

second stopper portion

151,32 can be meshing with each other and make wheel part 30 no longer mobile.

Claims

1. castor includes:

One main body, the one side is pivoted with a jack-post, and the central authorities of bottom then up offer a downward opening room, offer a pivot hole again in the bottom center top, and the truncation surface in this pivot hole is to be the ellipse garden of vertical long shape;

One transverse axis, its stage casing are hubbed in the pivot hole of this main body;

Two-wheeled spare is hubbed on this transverse axis two ends respectively, and its medial surface forms a central siphon portion;

One pushes up the part of pulling, and is located at the top, stage casing of transverse axis, and it has a dish portion, and the bottom surface of dish portion forms an arc groove, and end face up extends a cylinder, and this groove fits like a glove and is attached to transverse axis stage casing end face; And

One elastic element is placed in the room of main body, and its top holds at the room roof, the bottom then withstands in the dish portion of the part of pulling, this cylinder inserts intersegmental part under elastic element, and utilize its elasticity with this transverse axis toward pressing down, make this transverse axis stage casing be displaced downwardly to pivot hole hypomere end position;

It is characterized in that:

The both ends of the surface top in the pivot hole of this main body respectively forms an arc piece, and the cancave cambered surface of this arc piece below is provided with one first stopper portion;

This is taken turns on the outer peripheral face of central siphon portion of part and then is provided with the second stopper portion, can be when main body be pressed down and this first stopper portion form wipe contact.

2. castor as claimed in claim 1 is characterized in that: this first and second stopper portion adopts the brake cladding.

3. castor as claimed in claim 1 is characterized in that: this first and second stopper portion evenly is embossing.

4. castor as claimed in claim 1 is characterized in that: this first and second stopper portion is some pointed tooth portions that generally are triangular shape.