WO2010069092A1

WO2010069092A1 - Castor

Info

Publication number: WO2010069092A1
Application number: PCT/CN2008/002021
Authority: WO
Inventors: 陈敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-17
Filing date: 2008-12-17
Publication date: 2010-06-24
Anticipated expiration: 2011-06-17

Abstract

A castor includes a hollow frame(1) and two wheels(6,7). The hollow frame(1) has a ring-shaped inner surface(11) surrounding a cavity. The cavity is open at least at the two opposite sides. One end of each wheel is a connecting end and the other end is a contacting end which contacts the ground by friction. In the state of assembly, the connecting ends of the two wheels(6,7) are connected in such a manner that the connecting ends can be inserted into the cavity from opposite sides of the hollow frame(1) respectively and connected with each other in the cavity. There is a rotation fit between the two wheels(6,7) connected with each other and the hollow frame(1). The connecting ends of the two wheels(6,7) are located at the two sides of the hollow frame(1) respectively. The stress on the castor is uniform and the castor is durable. The castor can rotate flexibly without noise. The castor can be used on furniture to be moved such as chairs, tables and cabinets.

Description

脚轮技术领域 Casters

本发明涉及一种脚轮，尤其涉及安装在椅子、桌子等家具底部的脚轮。背景技术 The present invention relates to a caster, and more particularly to a caster mounted on the bottom of a chair, table or the like. Background technique

现有的脚轮大致有两种结构，一种包括单个滚轮，一根轴穿过该滚轮的中央，该轴的两端通过连接装置与椅脚连接。另一种包括两个滚轮，两个滚轮的中央分别安装在一根轴的两端，该轴再通过连接装置与椅脚相连接。现在，单个滚轮的应用范围很窄，而在包括两个滚轮的结构中，为了保证脚轮的外形美观且不让用户从脚轮外侧看到脚轮内侧的安装结构，每个滚轮的外侧面都是一个完整的实心平面，滚轮外侧面的中间无孔。每个滚轮都只是内侧受力，外侧不受力。由于受力不均，导致在滚轮内侧的轴安装孔的孔壁易裂，而且通常这种脚轮的外形也不美观。发明内容 The existing casters generally have two structures, one of which includes a single roller, and one shaft passes through the center of the roller, and both ends of the shaft are connected to the leg by a connecting device. The other type includes two rollers, and the centers of the two rollers are respectively mounted at two ends of a shaft, and the shaft is connected to the legs through a connecting device. Now, the application range of a single roller is very narrow. In the structure including two rollers, in order to ensure the appearance of the casters and not let the user see the mounting structure inside the casters from the outside of the casters, the outer side of each roller is a Complete solid plane with no holes in the middle of the outer side of the roller. Each roller is only stressed on the inside and the outside is not. Due to the uneven force, the hole wall of the shaft mounting hole inside the roller is easily broken, and usually the shape of the caster is not beautiful. Summary of the invention

因此，本发明的目的在于提供一种转动灵活、经久耐用且外形美观立体感强的脚轮。 Accordingly, it is an object of the present invention to provide a caster that is flexible in rotation, durable in appearance, and strong in appearance.

本发明提供一种脚轮，其包括空心骨架和两个滚轮，其中空心骨架具有一圏包围出空腔的圓环形内表面，所述空腔至少在相对两侧是敞开的，每个滚轮的一端为连接端且另一端为与地面摩擦接触的接触端，在安装状态下，两个滚轮的连接端可分别从所述两个相对侧插入该空腔内并连接在一起，相互连接的两个滚轮与空心骨架转动配合，两个滚轮的接触端分别位于空心骨架的两侧。 The present invention provides a caster comprising a hollow skeleton and two rollers, wherein the hollow skeleton has a circular inner surface surrounding the cavity, the cavity being open at least on opposite sides, one end of each roller a connecting end and a contact end in frictional contact with the ground. In the mounted state, the connecting ends of the two rollers are respectively inserted into the cavity from the opposite sides and connected together, and two connected to each other The roller is rotatably engaged with the hollow skeleton, and the contact ends of the two rollers are respectively located at two sides of the hollow skeleton.

在使用上述脚轮时，滚轮外表面接触并支承圓环形内表面的至少一部分并由此支承空心骨架。这种脚轮构造使两个滚轮的受力更均匀。 When the caster described above is used, the outer surface of the roller contacts and supports at least a portion of the inner surface of the annular shape and thereby supports the hollow skeleton. This caster construction makes the forces of the two rollers more uniform.

在上述脚轮中，在空心骨架的外表面上设有安装力臂，以便将滚轮安装到如椅子、桌子等家具的底脚上。在这里，两个滚轮的连接端通过螺紋相互连接。也可以想到采用其它任何合适的方式如过盈配合、粘接等。为使脚轮具有更好的立体感，两个滚轮可以设计成是轴向空心的。 In the caster described above, a mounting arm is provided on the outer surface of the hollow frame to mount the roller to the foot of a piece of furniture such as a chair or a table. Here, the connecting ends of the two rollers are connected to each other by means of a thread. It is also conceivable to employ any other suitable means such as interference fit, bonding, and the like. For the casters With a better three-dimensional feel, the two rollers can be designed to be axially hollow.

根据本发明的另一个实施方式，从脚轮的横断面看，圓环形内表面优选具有弧形轮廓，该弧形轮廓的弧顶与彼此相连的两个滚轮的外表面滑动摩擦接触。 According to another embodiment of the invention, the annular inner surface preferably has an arcuate profile from the cross-section of the caster, the arcuate top of the arcuate profile being in sliding frictional contact with the outer surfaces of the two rollers connected to each other.

在本发明的任何一个上述实施方式中，每个滚轮优选包括内轮和外胎，滚轮的连接端设置在内轮上，外胎穿套在内轮上并形成滚轮的接触端，两个滚轮在内轮的连接端相互连接。在这里，两个内轮的连接端优选通过螺紋相互连接，也可以通过其它合适的方式连接在一起。另外，两个外胎分别定位在空心骨架的两侧。每个内轮与穿套在该内轮上的外胎优选形成转动配合。也可以想到内轮和外胎是一体制成的结构。 In any of the above embodiments of the present invention, each of the rollers preferably includes an inner wheel and a tire casing, the connecting end of the roller is disposed on the inner wheel, and the tire casing is sleeved on the inner wheel and forms a contact end of the roller, the two rollers The connecting ends of the wheels are connected to each other. Here, the connecting ends of the two inner wheels are preferably connected to each other by threads or may be joined together by other suitable means. In addition, the two casings are positioned on either side of the hollow skeleton. Each inner wheel preferably forms a rotational fit with the outer casing that is threaded over the inner wheel. It is also conceivable that the inner wheel and the outer tube are integrally formed.

在上述脚轮中，从脚轮的横断面看，每个外胎的内侧可以具有弧形轮廓，每个内轮与外胎的弧形轮廓的弧顶滑动摩擦接触。另外，为了使脚轮具有更好的立体感，每个内轮可被设计成是轴向空心的。 In the above casters, the inner side of each of the tires may have an arcuate profile as seen from the cross section of the casters, each inner wheel being in sliding frictional contact with the arcuate top of the arcuate profile of the casing. In addition, in order to provide a better three-dimensional feel to the casters, each inner wheel can be designed to be axially hollow.

根据本发明的脚轮的结构设计合理，使两个脚轮受力均勾，保证了其能经久耐用，并且这种脚轮转动灵活且转动时无噪声。本发明的另一个优点是脚轮按照轴向空心的方式设计，可以使脚轮具有更强的立体感和更美观的外形。另外，这种脚轮使用范围广泛，椅子、桌子、拒子等需要移动的用具均可使用。附图说明 The caster according to the present invention has a reasonable structural design, so that the two casters are evenly hooked to ensure that they can be durable, and the casters are flexible and no noise when rotating. Another advantage of the present invention is that the casters are designed to be axially hollow, allowing the casters to have a stronger three-dimensional feel and a more aesthetic appearance. In addition, the casters can be used in a wide range of applications, such as chairs, tables, and refusals. DRAWINGS

以下结合附图来详细说明本发明的实施例，其中： Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, in which:

图 1为根据本发明脚轮的一个实施例的轴向分解图； Figure 1 is an axial exploded view of one embodiment of a caster in accordance with the present invention;

图 2为图 1所示脚轮的立体图； Figure 2 is a perspective view of the caster shown in Figure 1;

图 3为图 1所示脚轮的平面图； Figure 3 is a plan view of the caster shown in Figure 1;

图 4为脚轮沿图 3中的线 A-A的剖视图。具体实施方式 Figure 4 is a cross-sectional view of the caster taken along line A-A of Figure 3. detailed description

下面结合附图和实施例对本发明作进一步详述。 The invention will be further described in detail below with reference to the accompanying drawings and embodiments.

结合图 1至图 4描述本发明脚轮的一个实施例，其包括空心骨架 1和两个滚轮 6、 7, 空心骨架 1可具有圓环状外表面 10和包围出空腔的圓环状内表面 11 , 所述空腔至少在相对两侧是敞开的。如图 2所示，空心骨架 1的外表面上设有能与桌子、椅子等用具的底脚相连接的安装力臂 12, 安装力臂 12最好是沿空心骨架 1 的外表面的切线方向设置，脚轮可绕该安装力臂的轴线 13转动。也可以使用其它装置将空心骨架 1与桌子、椅子等用具的底脚相连接，只要能使空心骨架 1能绕竖直轴线旋转即可。 An embodiment of the caster of the present invention is described with reference to Figures 1 to 4, which comprises a hollow skeleton 1 and two rollers 6, 7, and the hollow skeleton 1 may have an annular outer surface 10 and a ring surrounding the cavity The inner surface 11 is open at least on opposite sides. As shown in Fig. 2, the outer surface of the hollow frame 1 is provided with a mounting force arm 12 which can be connected to the foot of a table, a chair or the like. The mounting arm 12 preferably has a tangential direction along the outer surface of the hollow frame 1. It is provided that the casters are rotatable about the axis 13 of the mounting arm. Other means may be used to connect the hollow skeleton 1 to the feet of a table, a chair or the like as long as the hollow skeleton 1 can be rotated about a vertical axis.

在本实施例中，滚轮 6包括外胎 2和内轮 4, 滚轮 7包括外胎 3和内轮 5。如图所示，两个外胎 2、 3的整体形状为环状，并且两个外胎 2、 3 分别穿套在两个内轮 4、 5上。两个内轮 4、 5是轴向空心的，两个内轮 4、 5的外端分别向外形成翻边 40、 50。在安装时，两个内轮 4、 5分别从空心骨架 1的空腔的所述相对两侧相对插入由上述空腔内并通过例如螺纹连接在一起，相互连接的内轮 4、 5与空心骨架 1 能够转动配合。当然可以想到，外胎 2、 3也可以与内轮 4、 5转动配合。在外胎 2、 3和内轮 4、 5 的另一种实施方式中，所述外胎和内轮可以是一体制成的，这时则只有滚轮 6、 7和空心骨架 1转动配合。 In the present embodiment, the roller 6 includes a tire casing 2 and an inner wheel 4, and the roller 7 includes a tire casing 3 and an inner wheel 5. As shown, the overall shape of the two tires 2, 3 is annular, and the two tires 2, 3 are respectively fitted over the two inner wheels 4, 5. The two inner wheels 4, 5 are axially hollow, and the outer ends of the two inner wheels 4, 5 respectively form flanges 40, 50 outward. When installed, the two inner wheels 4, 5 are respectively inserted from the opposite sides of the cavity of the hollow frame 1 into the inner ring 4, 5 and the hollow which are connected by the above-mentioned cavity and are connected by, for example, a screw. The skeleton 1 can be rotated and fitted. It is of course conceivable that the tires 2, 3 can also be rotated and fitted with the inner wheels 4, 5. In another embodiment of the tire casings 2, 3 and the inner wheels 4, 5, the casing and the inner wheel may be integrally formed, in which case only the rollers 6, 7 and the hollow frame 1 are rotationally fitted.

图 4示出了脚轮沿线 A-A的剖视图，如图所示，在脚轮的横断面中，外胎 2、 3在内外两侧均具有弧形轮廓，空心骨架 1 的内表面也具有弧形轮廓。在这里，一个外胎 2定位于空心骨架 1与一个内轮 4的翻边 40之间，另一个外胎 3定位于空心骨架 1与另一内轮 5的翻边 50之间，空心骨架 1的内表面 11的弧形轮廓的弧顶与内轮 5的外表面滑动摩擦接触。内轮 4与穿套在其身上的外胎 2的内侧弧形轮廓的弧顶滑动摩擦接触，内轮 5与穿套在它身上的外胎 3的内侧弧形轮廓的弧顶滑动摩擦接触。应当理解，为了增大空心骨架 1的内表面 11与内轮 4、 5的接触面积，使滚轮受力更均匀，可以将内表面 11 的弧形轮廓构造成梯形、或其它能增大接触面积并使受力均匀的任何形状。上述的具体实施例或方案。在不超出本发明的精神和范围的前提下，本领域普通技术人员可以对上述的实施例、技术方案或技术特征组合进行修改。 Fig. 4 shows a cross-sectional view of the caster along the line A-A. As shown, in the cross section of the caster, the tires 2, 3 have an arcuate profile on both the inner and outer sides, and the inner surface of the hollow frame 1 also has an arcuate profile. Here, one casing 2 is positioned between the hollow frame 1 and the flange 40 of one inner wheel 4, and the other casing 3 is positioned between the hollow frame 1 and the flange 50 of the other inner wheel 5, inside the hollow frame 1. The arcuate top of the curved profile of the surface 11 is in sliding frictional contact with the outer surface of the inner wheel 5. The inner wheel 4 is in sliding frictional contact with the arcuate top of the inner curved profile of the casing 2 worn over the body, and the inner wheel 5 is in sliding frictional contact with the arcuate top of the inner arcuate profile of the casing 3 which is placed over it. It should be understood that in order to increase the contact area of the inner surface 11 of the hollow skeleton 1 with the inner wheels 4, 5, the force of the roller is more uniform, and the curved contour of the inner surface 11 can be configured to be trapezoidal, or other contact area can be increased. And make any shape that is evenly stressed. The specific embodiment or scheme described above. Modifications to the above-described embodiments, technical solutions, or combinations of technical features may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

Rights request

A caster comprising a hollow skeleton (1) and two rollers (6, 7), characterized in that the hollow skeleton (1) has a circular inner surface (11) surrounding the cavity, Wherein the cavity is open at least on opposite sides, one end of each of the rollers is a connecting end and the other end is a contact end in frictional contact with the ground, and in the mounted state, the two rollers (6, 7) The connecting ends are respectively inserted into the cavity from the opposite sides and connected together, and the two rollers (6, 7) connected to each other are rotatably engaged with the hollow skeleton (1), the two The contact ends of the rollers (6, 7) are respectively located on both sides of the hollow skeleton (1).

2. A caster according to claim 1, characterized in that a mounting arm (12) is provided on the outer surface of the hollow skeleton (1).

3. The caster according to claim 1, wherein the annular inner surface (11) has an arcuate profile from the cross section of the caster, the arc top of the arcuate profile being interconnected The outer surfaces of the two rollers (6, 7) are in sliding frictional contact.

4. A caster according to claim 1, characterized in that the connecting ends of the two rollers (6, 7) are connected to each other by means of a thread.

The caster according to any one of claims 1 to 4, characterized in that the two rollers (6, 7) are axially hollow.

The caster according to any one of claims 1 to 4, characterized in that each of the rollers (6, 7) comprises an inner wheel (4, 5) and a tire casing (2, 3), the roller The connecting ends of (6, 7) are disposed on the inner wheels (4, 5), and each of the tires (2, 3) is sleeved on the corresponding inner wheels (4, 5) and forms the contact end In the assembled state of the casters, two of the casings (2, 3) are respectively positioned on both sides of the hollow skeleton (1).

7. A caster according to claim 6, characterized in that each of said inner wheels (4, 5) is in rotational engagement with a respective casing (2, 3) that is threaded over said inner wheel.

8. Caster according to claim 6, characterized in that the inner wheel (4, 5) and the casing (2, 3) are made in one piece.

9. A caster according to claim 6, wherein each of said casings (2, 3) has an arcuate profile on the inside as viewed in cross section of said caster, each of said inner wheels (4, 5) sliding frictional contact with the arc top of the curved profile.

10. A caster according to claim 6, characterized in that each of said inner wheels (4, 5) is axially hollow.