CN2420154Y

CN2420154Y - Castor for case

Info

Publication number: CN2420154Y
Application number: CN 00236511
Authority: CN
Inventors: 马圣爵
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-30
Filing date: 2000-05-30
Publication date: 2001-02-21
Anticipated expiration: 2010-05-30

Abstract

The utility model relates to a castor for a case, which comprises a position seat which is arranged on the case, a wheel seat which is pivoted on the bottom surface of the position seat and can rotate corresponding to the position seat, a rolling wheel which is pivoted on the wheel seat and a rolling ball table which is arranged between the position seat and the wheel seat to reduce the frictional force of the both in corresponding rotation. The rolling ball table forms a flat annular shape, and a plurality of perforations are arranged on the rolling ball table with preset intervals to make rolling balls with an equal number contained in the perforations. At least one ball-shaped salient point is arranged between each perforation and each perforation. Thereby, when the wheel seat rotates corresponding to the position seat, the noise can be reduced greatly, and simultaneously, the integral manufacturing cost can be reduced.

Description

The casing caster wheel

The utility model is relevant with the casing of suitcase etc., is meant a kind of casing caster wheel especially, and noise was extremely low and cheap for manufacturing cost when it used.

Press, commercially available general casing caster wheel 1 is as shown in Figure 1, includes a positioning seat 2, one ball tables 3, one wheel seat 6, and a roller 7 are when the user is dilatory when the casing of weight is housed, castor 1 often sends the great sound, causes the user unhappy, even causes other people's sidelong glance.

The source of studying carefully its sound mainly contains two, the friction sound that one when being roller 7 rotation and axle center is 8, when another then is this wheel seat 6 with respect to these positioning seat 2 rotations, be positioned at the two ball table 3 and the two sound that rubs and sent, though the effect of ball table 3 is to reduce the friction force of 2 of wheel seat 6 and positioning seats, so during its ball 4 rotations and the friction of 3 of bodies become the topmost arch-criminal that makes a noise.

Because above-mentioned disappearance, main purpose of the present utility model is promptly providing a kind of casing caster wheel, and its noise that is sent when using is extremely low.

Another purpose of the present utility model is to provide a kind of casing caster wheel, and its manufacturing cost is very cheap.

Edge is to take off purpose for before reaching, and it is to include a positioning seat to be located on this casing that the utility model provides the casing caster wheel; One wheel seat is hubbed at this positioning seat bottom surface and this positioning seat rotation relatively; One roller is hubbed on this wheel seat; And one ball table be located between this positioning seat and this wheel seat, friction force when rotating relatively in order to reduce the two, this ball table is to be flat ring-type, is provided with some perforation on it at interval preset distance, use for the ball that waits number to be installed with, respectively then be provided with at least one salient point that is pearl between this perforation; By this, when this wheel seat rotated with respect to this positioning seat, its noise can significantly reduce, and the single-piece manufacturing cost can reduce simultaneously.

Wherein this wheel seat has a top, and this positioning seat bottom surface then is concaved with a tank, supplies the top of this ball table and this wheel seat to be installed with.

Wherein these positioning seat tank central authorities are provided with a through hole, and this wheel seat top is provided with a through hole to through hole that should positioning seat, and an articulated part wears and this positioning seat and this wheel seat are articulated.

Wherein this wheel seat has two alar parts and is extended downwards by these top two ends, is pivoted for this roller.

Wherein the diameter of this salient point is the diameter that is not more than these balls.

Wherein the number of this ball table salient point and the number of perforation be so that the amount of being all is good mutually, and each salient point is to be located at respectively respectively between this perforation.

Wherein this ball table is by plastics one ejection formation.

In order more to understand characteristics of the present utility model place, lift with next preferred embodiment now and cooperate graphic being described as follows, wherein:

Fig. 1 is the three-dimensional exploded view of known casing with castor.

Fig. 2 is the block diagram of the utility model one preferred embodiment.

Fig. 3 is the three-dimensional exploded view of the utility model one preferred embodiment.

Fig. 4 is the cutaway view of Fig. 1 along the 4-4 direction.

Fig. 5 is the three-dimensional exploded view of the utility model one preferred embodiment ball table.

See also Fig. 2 to Fig. 4, the utility model one casing that preferred embodiment provides is to be located on the casing with caster wheel 10, and this castor 10 includes a positioning seat 20, one wheel seats 30, one rollers 40, and a ball table 30.

This positioning seat 20 is to be located on this casing, and its bottom surface is concaved with the tank 22 of a circle, and these tank 22 central authorities then are provided with a through hole 24.

This wheel seat 30 is to include a back-shaped top 32 to be located in the tank 22 of this positioning seat 20, and two alar parts 36 are extended downwards by these top 32 relative two ends; Wherein, these 32 tops, top are concaved with the groove 33 of a ring-type, and are central then be provided with the through hole 24 that 34 pairs of through holes should positioning seat 20, wear and cooperate a pad 38 that this positioning seat 20 is articulated with this wheel seat 30 and can rotate relatively in order to mat one articulated part 35; Respectively 36 of this alar parts are respectively equipped with a perforation 37.

These roller 40 central authorities have an axis hole 42, are arranged in this axis hole 42 and this perforation 37 in order to mat one articulated part 44 this roller 40 is articulated with this wheel seat 30.

This ball table 50 is to be located in the groove 33 of this wheel seat 30, and is located in the tank 22 of this positioning seat 20 together with the top 32 of this wheel seat 30, uses the friction force when reducing these wheel seat 30 relative these positioning seats 20 and rotating; Wherein, this ball table 50 is to be flat ring-type, as shown in Figure 5, be by plastics one injection molding, be provided with to same distance six perforation 52 on it at interval, use for six balls 54 to be installed with, respectively then be provided with six salient points 56 that are pearl between this perforation 52, the diameter of these salient points 56 is the diameters that are slightly smaller than these balls 54.

By this, when these wheel seat 30 relative these positioning seats 20 rotate, this ball table 50 can not only reduce the friction force of the two, and because the more known person of the number of ball reduces, also significantly reduction of the sound that is sent with ball table 50 frictions when so ball 54 rolls, and because the auxiliary of these salient points 56 holds the friction force in the time of also effectively reducing this wheel seat 30 with these positioning seat 20 relative rotations; In addition, the minimizing of ball quantity can not only make the ball table stack-mounted speed up, and more can reduce the cost of element, thereby reaches the purpose of this utility model.

Claims

1. a casing caster wheel is to be located on the casing, it is characterized in that, includes:

One positioning seat is to be located on this casing;

One wheel seat is to be hubbed at this positioning seat bottom surface and this positioning seat rotation relatively;

One roller is to be hubbed on this wheel seat; And

One ball table is to be located between this positioning seat and this wheel seat, and this ball table is to be flat ring-type, is provided with at interval the perforation that some balls that number such as supply are installed with on it preset distance, respectively then is provided with at least one salient point that is pearl between this perforation.

2. according to the described casing caster wheel of claim 1, it is characterized in that wherein this wheel seat has a top, this positioning seat bottom surface then is concaved with a tank, supplies the top of this ball table and this wheel seat to be installed with.

3. according to the described casing caster wheel of claim 2, it is characterized in that wherein these positioning seat tank central authorities are provided with a through hole, this wheel seat top is provided with a through hole to through hole that should positioning seat, and an articulated part wears and this positioning seat and this wheel seat are articulated.

4. according to the described casing caster wheel of claim 2, it is characterized in that wherein this wheel seat has two alar parts and extended by these top two ends downwards, be pivoted for this roller.

5. according to the described casing caster wheel of claim 1, it is characterized in that wherein the diameter of this salient point is the diameter that is not more than these balls.

6. according to the described casing caster wheel of claim 1, it is characterized in that wherein the number of this ball table salient point and the number of perforation be so that the amount of being all is good mutually, and each salient point is to be located at respectively respectively between this perforation.

7. according to the described casing caster wheel of claim 1, it is characterized in that wherein this ball table is by plastics one ejection formation.