TWI868838B - Movable leg cushion - Google Patents

Abstract

The present invention relates to a movable leg cushion, which is installed on a supporting leg of a bearing seat, and includes a housing, a movable inner sleeve, an elastic part and a roller. A connector is fixedly connected on the outer side of the housing, an abutting portion is provided on the inner side of the housing, and the housing is also provided a housing accommodating space. The movable inner sleeve is slidably arranged in the housing accommodating space of the housing, and can slide relative to the housing, so that the movable inner sleeve can slide to an active position or a braking position. The elastic part is disposed between the housing and the movable inner sleeve, and the roller is pivotally arranged on the movable inner sleeve. Wherein, when the movable inner sleeve is at the active position, the roller is separated from the abutting portion by a moving distance, and when the movable inner sleeve is at the braking position, the roller is abutted against the abutting portion. As such, the bearing seat can easily move back and forth when there is no specific weight, and the bearing seat will automatically brake and fix when there is a specific weight. Therefore, the bearing seat can be moved more easily without noise, especially in places that require quietness, which reveals the importance of the movable leg cushion of the present invention.

Description

Removable foot pad

The present invention relates to a movable foot pad, in particular a movable foot pad suitable for a supporting base.

Chairs or stools are the most frequently used products in daily life. Usually there is no problem. However, in quiet meeting rooms, cafes, and important public places, the noise generated by the movement of chairs or stools can cause distress, irritation, and embarrassment to people, thus affecting their mood.

Therefore, in order to make chairs or stools easy to move without making noise, several types of assembled foot pads have appeared on the market. For example, soft rubber cover type foot pads can have a silent effect but are inconvenient to move. Or, for example, hard rubber fixed type foot pads can slide but require greater force and are not completely silent. Therefore, the above two types of foot pads have a poor user experience and cannot take into account both silent and convenient movement.

Because of this, the inventor, with the spirit of active invention, was eager to think of a movable foot pad that could solve the above problems. After several years of research and experiments, he finally completed this invention.

The main purpose of the present invention is to provide a movable foot pad. By installing the movable foot pad of the present invention on the supporting foot of the support base, the support base can be easily moved forward and backward when there is no specific weight, and the support base will automatically brake and fix when there is a specific weight, so that the support base can be moved more conveniently and without noise, especially in places that require quietness, which can better reflect the importance of the movable foot pad of the present invention.

To achieve the above-mentioned purpose, the movable foot pad of the present invention is installed on a supporting foot of a bearing seat, and includes an outer shell, an active inner sleeve, an elastic member and a roller. The outer shell is fixedly provided with a fixed connecting member on the outer side, and has a supporting portion and an outer shell accommodating space on the inner side. The active inner sleeve is slidably arranged in the outer shell accommodating space and can slide relative to the outer shell so that the active inner sleeve slides to an active position or a braking position. The elastic member is sandwiched between the outer shell and the active inner sleeve, and the roller is pivotally arranged on the active inner sleeve. When the movable inner sleeve is at the movable position, the roller and the abutment portion are separated by an movable distance, and when the movable inner sleeve is at the braking position, the roller abuts against the abutment portion.

The above-mentioned abutment portion can be an arc-shaped structure to correspond to the outer contour of the roller, so that it can fit completely when in contact to achieve a braking effect.

The above activity distance can be 1 mm.

Another movable foot pad of the present invention is installed on a supporting foot of a supporting seat, including an outer shell, a movable inner sleeve, an elastic member and a roller. A fixed connecting member is fixedly provided on the outer side of the outer shell, and an outer shell accommodating space is opened on the inner side. The movable inner sleeve is slidably arranged in the outer shell accommodating space, and can slide relative to the outer shell so that the movable inner sleeve slides to an active position or a receiving position. The elastic member is sandwiched between the outer shell and the movable inner sleeve, and the roller is pivotally arranged on the movable inner sleeve. When the movable inner sleeve is in the active position, the roller protrudes from the lower edge of the outer shell, and when the movable inner sleeve is in the receiving position, the roller does not protrude from the lower edge of the outer shell and is accommodated in the outer shell accommodating space.

The above-mentioned movable footrest may further include a set of appearance parts arranged on the outer shell.

The movable foot pad may further include a locking nut threaded on the fixed connecting member, the locking nut being located between the appearance member and the supporting foot to ensure that the movable foot pad is securely locked on the supporting foot.

The above-mentioned fixed connector can be a fixing screw for locking the movable foot pad on the supporting foot.

The above overview and the following detailed description are exemplary in nature and are intended to further illustrate the scope of the patent application of the present invention. Other purposes and advantages of the present invention will be explained in the subsequent description and illustrations.

1a,1b: Removable foot pad

10: Carrier seat

101: Support your feet

2,2’: Shell

20,20’: Shell storage space

21:Fixed connector

22: Abutment

3,3’: Movable inner sleeve

31: Axis

4,4’: Elastic parts

5: Scroll wheel

6,6’: Appearance parts

7: Tighten the nut

D: Activity distance

Figure 1 is a three-dimensional diagram of a support base equipped with a movable foot pad according to the first embodiment of the present invention.

Figure 2 is a three-dimensional diagram of the movable foot pad of the first embodiment of the present invention.

Figure 3 is a disassembled diagram of the movable foot pad of the first embodiment of the present invention.

FIG4A is a cross-sectional view of the movable foot pad of the first embodiment of the present invention in an active state.

FIG4B is a cross-sectional view of the braking state of the movable foot pad of the first embodiment of the present invention.

Figure 5A is a cross-sectional view of the movable foot pad of the second embodiment of the present invention in an active state.

Figure 5B is a cross-sectional view of the removable foot pad in the second embodiment of the present invention in the storage state.

Please refer to Figure 1, which is a three-dimensional diagram of a support base equipped with a movable foot pad in the first embodiment of the present invention. As shown in the figure, the movable foot pad 1a of the present invention is installed on each support leg 101 of a support base 10. In this embodiment, the support base 10 is a chair or stool for people to sit on, but it is not limited to this. It can also be any vehicle that can carry heavy objects, so that the support base 10 can be easily moved forward and backward when there is no specific weight, and the support base 10 will automatically brake and fix when there is a specific weight, so that the support base 10 can be moved more easily and without noise, especially in places that require quietness, which can better reflect the importance of the movable foot pad 1a of the present invention.

Please refer to Figures 2 and 3, which are respectively a three-dimensional view and an exploded view of the movable foot pad of the first embodiment of the present invention. The figure shows a movable foot pad 1a, including an outer shell 2, a movable inner sleeve 3, an elastic member 4, two rollers 5, an appearance member 6 and a locking nut 7.

In this embodiment, the outer shell 2 is made of plastic material, and a fixed connector 21 is fixedly provided on the outer side of the outer shell 2. The fixed connector 21 of this embodiment is a fixing screw, which is used to lock the movable foot pad 1a to the supporting foot 101, and the inner side of the outer shell 2 has a supporting portion 22 (as shown in FIG. 4A) and a shell accommodating space 20 is opened. The supporting portion 22 of this embodiment is an arc-shaped structure, which can correspond to the outer contour of the roller 5, and can be completely fitted when in contact to achieve a braking effect. The movable inner sleeve 3 is slidably disposed in the shell accommodating space 20, and can slide relative to the outer shell 2, so that the movable inner sleeve 3 slides to an active position or a braking position. The elastic member 4 is sandwiched between the outer shell 2 and the movable inner sleeve 3 to provide the movable inner sleeve 3 with elastic restoring force to restore it from the braking position to the active position. The two rollers 5 are pivoted to the movable inner sleeve 3 by a pivot 31, so that the movable foot pad 1a can move along the rolling direction of the rollers 5. The appearance member 6 of this embodiment is made of aluminum material and is sleeved on the outer shell 2 to improve the structural rigidity and visual beauty. In addition, the locking nut 7 is screwed on the fixed connecting member 21 and is located between the appearance member 6 and the supporting foot 101. Thus, after the user has initially locked the fixed connector 21 to the supporting foot 101 by hand, he can then use a wrench or other locking tools to turn the locking nut 7 to ensure that the movable foot pad 1a is firmly locked on the supporting foot 101.

Please refer to FIG. 4A and FIG. 4B, which are cross-sectional views of the movable foot pad of the first embodiment of the present invention in the active state and the braking state, respectively. As shown in FIG. 4A, when the bearing seat 10 does not bear a specific weight, the elastic member 4 has not been compressed, so that the movable inner sleeve 3 can be located in the active position. At this time, the roller 5 and the abutment portion 22 are separated by an active distance D. The active distance D of this embodiment is 1 mm, but it is not limited to this and can also be other values. Therefore, the two rollers 5 are not restricted by the abutment portion 22 and can move forward and backward easily. In contrast, as shown in FIG. 4B , when the bearing seat 10 carries a certain weight, the elastic member 4 is compressed, so that the movable inner sleeve 3 can be located at the braking position. At this time, the roller 5 abuts against the abutment portion 22 without a movable distance D, so that the two rollers 5 and the arc-shaped structure of the abutment portion 22 fit each other and cannot move forward and backward. Among them, the floating load of each roller 5 is about 5 to 6 kilograms, so when each roller 5 exceeds this weight, the movable inner sleeve 3 will be located at the braking position and cannot move forward and backward. In addition, the total load of each roller 5 is about 50 kilograms, and there is a possibility of damage if it exceeds this weight.

Please refer to Figures 5A and 5B, which are cross-sectional views of the movable foot pad of the second embodiment of the present invention in the active state and the accommodated state, respectively. The figure shows another movable foot pad 1b, whose basic structure is the same as that of the first embodiment, but the difference is mainly that the braking method is slightly different from that of the first embodiment. In this embodiment, the shell 2' is made of plastic material, and a fixed connector 21 is fixedly provided on the outer side of the shell 2'. The fixed connector 21 of this embodiment is a fixing screw, which is used to lock the movable foot pad 1b to the supporting foot 101, and a shell accommodating space 20' is opened on the inner side of the shell 2', and this embodiment does not have a supporting portion, and it is notified. The movable inner sleeve 3' is slidably disposed in the housing space 20' of the outer shell, and can slide relative to the outer shell 2', so that the movable inner sleeve 3' slides to an active position or a receiving position. The elastic member 4' is sandwiched between the outer shell 2' and the movable inner sleeve 3' to provide the movable inner sleeve 3' with an elastic restoring force to restore it from the receiving position to the active position. The two rollers 5 are pivotally disposed on the movable inner sleeve 3', so that the movable foot pad 1b can move along the rolling direction of the rollers 5. The appearance member 6' of this embodiment is made of aluminum material and is sleeved on the outer shell 2' to improve the structural rigidity and visual beauty. Among them, since the present embodiment needs to accommodate the two rollers 5 in the housing space 20', both the movable inner sleeve 3' and the appearance member 6' have a higher structural design compared with the first embodiment to increase the accommodation space. In addition, the locking nut 7 is screwed on the fixed connecting member 21, located between the appearance member 6' and the supporting foot 101. Thereby, after the user manually locks the fixed connecting member 21 to the supporting foot 101, the locking nut 7 can be turned by a wrench or other locking tools to ensure that the movable foot pad 1b is firmly locked on the supporting foot 101.

As shown in FIG5A , when the bearing seat 10 does not bear a specific weight, the elastic member 4 'is not yet compressed, so that the movable inner sleeve 3 'can be located at the movable position, and the roller 5 protrudes from the lower edge of the outer shell 2 ', so it can move forward and backward easily. In contrast, as shown in FIG5B , when the bearing seat 10 bears a specific weight, the elastic member 4 'is compressed, so that the movable inner sleeve 3 'is located at the receiving position, and the roller 5 does not protrude from the lower edge of the outer shell 2 'and is accommodated in the outer shell accommodation space 20 ', so the outer shell 2 'is mainly used to bear the weight and cannot move forward and backward. The floating load of each roller 5 is about 5-6 kg. Therefore, when the weight of each roller 5 exceeds this, the roller 5 will be retracted into the outer housing space 20' of the outer housing 2', and the outer housing 2' will touch the ground and cannot move forward or backward. In addition, the total load of each roller 5 is about 50 kg. If the weight exceeds this, it may be damaged.

The above embodiments are only given for the convenience of explanation. The scope of rights claimed by the present invention shall be subject to the scope of the patent application, and shall not be limited to the above embodiments.

1a: Removable foot pad

2: Shell

21:Fixed connector

3: Movable inner sleeve

31: Axis

4: Elastic parts

5: Scroll wheel

6: Appearance parts

7: Tighten the nut

Claims (7)

A movable foot pad is installed on a supporting foot of a bearing seat, comprising: an outer shell, with a fixed connecting member fixed on the outer side, a supporting portion on the inner side and an outer shell accommodating space; a movable inner sleeve, slidably arranged in the outer shell accommodating space, and can slide relative to the outer shell so that the movable inner sleeve slides to an active position or a braking position; an elastic member, clamped between the outer shell and the movable inner sleeve; and a roller, pivotally arranged on the movable inner sleeve; wherein, when the movable inner sleeve is located at the active position, the roller and the supporting portion are spaced apart by an active distance, and when the movable inner sleeve is located at the braking position, the roller abuts against the supporting portion. A movable foot pad as described in claim 1, wherein the supporting portion is an arc-shaped structure. A movable foot pad as described in claim 1, wherein the movable distance is 1 mm. The movable foot pad as described in claim 1 further includes a set of external components disposed on the housing. The movable footrest as described in claim 4 further includes a locking nut threaded on the fixed connecting member, and the locking nut is located between the appearance member and the supporting foot. A movable foot pad as described in claim 1, wherein the fixed connection member is a fixing screw. A movable footrest as described in claim 1, wherein the support base is a chair or a stool.

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