Patent Application
20230320485
This application claims priority benefit of Chinese Utility Model Application No. 202220804403.1, filed on Apr. 8, 2022, and the entire contents of which are incorporated herein by reference.
The present application relates to daily necessities, and in particular, to a protective sleeve for a furniture foot.
As a furniture foot such as a chair foot is in contact with a floor, when the chair is moved on the floor, the chair foot nibs against the floor, making the floor worn.
Some of existing chair feet are provided with plastic or nylon protective sleeves. When a chair is moved, a protective sleeve rubs against the floor. When the chair is moved, a friction force between the protective sleeve and the floor is so large that the protective sleeve falls off easily. In order to reduce the friction force between the protective sleeve and the floor, bottom surfaces of some existing protective sleeves are provided with anti-skid layers, and the anti-skid layers are bonded to the bottom surfaces of the protective sleeves via glue. Because a protective sleeve is usually made of a flexible material, it is inconvenient to support the protective sleeve during application of glue. As a result, it is highly possible that the glue is applied unevenly, so that the bonding strength may vary across the anti-skid layer. Portions of the anti-skid layer with a small glue thickness are prone to peel off during moving of the chair, causing portions of the anti-skid layer to warp and further making the anti-skid layer peel off. Then, the flexible material of the protective sleeve is in direct contact with the floor, causing the protective sleeve to fall off due to increased friction force.
A main objective of the present application is to provide a protective sleeve for a furniture foot, and aims to resolve the problem that an existing protective sleeve for a furniture foot is easy to fall off because a friction force against the floor is too great.
In order to achieve the above objective, the protective sleeve for a furniture foot provided in the present application includes a sleeve body and a felt pad, wherein
In some examples, the felt pad is provided with a first via hole.
In some examples, the first via, hole is provided at the center of the felt pad.
In some examples, the bottom wall is provided with at least one second via hole.
In some examples, there are a plurality of the second via holes disposed on the bottom wall in a scattered manner.
In some examples. an edge of the felt pad extends to a surface of the lateral wall to form a wrapping edge, and the wrapping edge is in a hot-melt connection with the lateral wall.
In some examples, a plurality of convex ribs are circumferentially disposed on an inner surface of the lateral wall.
In some examples, the lateral wall includes a first lateral wall section, a second lateral wall section, and a third lateral wall section that are sequentially connected from bottom to top, the first lateral wall section being connected to the bottom wall; when the lateral wall is in a naturally extended state, the second lateral wall section gradually contracts from bottom to top, and the third lateral wall section gradually expands from bottom to top; and the convex rib is strip-shaped from bottom to top and extends from the second lateral wall section to the third lateral wall section.
In some examples, an inner surface of the bottom wall is provided with at least one convex block.
In some examples, there are a plurality of the convex blocks disposed on the bottom wall in a scattered manner; and/or, a top surface of the convex block is a convex surface.
According to the present application, the felt pad is disposed on a bottom surface of the sleeve body. As the friction coefficient of the felt pad is smaller than the friction coefficient of the sleeve body, a friction force on the felt pad is smaller when a chair foot is moved against a floor, so that the protective sleeve for a furniture foot is prevented from falling off. Owing to the hot-melt connection between the felt pad and the bottom wall of the sleeve body, the material of the sleeve body can be partially infiltrated into the felt pad, so that the felt pad is firmly bonded to the bottom wall and is prevented from peeling off.
In order to more clearly explain the technical schemes of the embodiments of the present application, the drawings needed in the description of the embodiments are briefly set forth below, and apparently, the accompanying drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be derived on the basis of these drawings without any inventive effort.
The technical schemes in the embodiments of the present, application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only some of the embodiments of the present application and are not all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without inventive effort are within the scope of the present application.
Embodiments of the present application disclose a protective sleeve for a furniture foot, in particular, used on a chair foot. When used, the protective sleeve sheathes a bottom end of the chair foot. A shape of the protective sleeve may conform to a shape of the chair foot. For example, when the chair foot has a circular cross section, the protective sleeve is provided with a cylindrical cavity; and when the chair foot has a rectangular cross section, the protective sleeve is provided with a cavity having a rectangular cross section.
Referring to
The sleeve body 100 is of a cylindrical structure, and includes a bottom wall 120 and a lateral wall 110 connected to the bottom wall 120. The bottom wall 120 and the lateral wall 110 enclose and define an inner cavity. An opening providing access to the inner cavity is formed in one end of the sleeve body 100. The lateral wall 110 has a lower end and an upper end that are disposed axially, wherein the lower end of the lateral wall 110 is connected to the bottom, wall 120, and the upper end of the lateral wall 110 forms the opening. The chair foot extends into the inner cavity through the opening. A bottom surface of the chair foot can be attached to an inner surface of the bottom wall 120. The lateral wall 110 encloses a circumferential periphery of the chair foot. In some examples, the bottom wall 120 is integrally formed with the lateral wall 110. During manufacture of the sleeve body 100, the bottom, wall 120 and the lateral wall 110 may be integrally formed via a hot-melt process, to make the bottom wall 120 more firmly connected to the lateral wall 110. In some examples, the sleeve body 100 is made of a flexible material, so that the sleeve body 100 can be mounted to a chair foot conveniently. The hot-melt process is one of existing injection molding processes. In this process, a molten material is poured into a mold through a sprue, and a target shape is formed after the molten material is solidified and shaped in the mold. The sleeve body 100 may be made of a thermo-plastic-rubber material (TPR), a thermoplastic elastomer (TPE), rubber, silicone, or another material.
In some examples, the felt pad 200 is consistent with a shape of an outer surface of the bottom wall 120, so that the felt pad 200 can completely cover the outer surface of the bottom wall 120. The felt pad 200 is made of an integral piece of a felt material, and has a friction coefficient smaller than the friction coefficient, of the sleeve body 100.
The bottom wall 120 of the sleeve body 100 directly faces the floor. Therefore, with the felt pad 200 disposed on the outer surface of the bottom wall 120, when the chair is moved, a friction force between the bottom wall 120 of the sleeve body 100 and the floor is relatively decreased, thereby effectively resolving the problem that a protective sleeve falls off due to too great a friction force on a bottom surface of the protective sleeve.
In some examples, an edge of the felt, pad 200 extends to a surface of the lateral wall 110 to form a wrapping edge 210. The wrapping edge 210 has a first end and a second end that are axially disposed on the lateral wall 110. The first end of the wrapping edge 210 is connected to an outer peripheral edge of the felt pad 200. The second end of the wrapping edge 210 extends to the outer surface of the lateral wall 110, thereby forming an annular structure at an end, close to the bottom wall 120, of the outer surface of the lateral wall 110. The wrapping edge 210 covers a surface at one end, close to the bottom wall 120, of the lateral wall 110, thereby forming an anti-skid layer on the surface at the end, close to the bottom wall 120, of the lateral wall 110. In the case of a heavy chair, a force on the chair foot is great, causing a bottom surface of the protective sleeve to be tightly pressed on the floor. When the chair foot is moved in this case, the protective sleeve may deform to some extent. A friction coefficient of the wrapping edge 210 is smaller than the friction coefficient of the sleeve body 100, so that a friction force between the wrapping edge 210 and the floor is smaller. Therefore, the protective sleeve can be prevented from falling off the chair foot by the wrapping edge 210 formed on the lateral wall 110.
In some examples, the felt pad 200 is in a hot-melt connection with the bottom wall 120. For example, the sleeve body 100 is made of a silicone material. The felt pad 200 is placed at a preset position in the mold. When molten silicone is poured into the mold, the molten silicone is integrated with the felt pad 200 to form an integral protective sleeve. Because the felt pad 200 has a rough surface, and the surface has a great quantity of fibers, when the molten silicone is in contact with the felt pad 200, the molten silicone can be fused with the fibers on the surface of the felt pad 200. Because gaps among the fibers of the felt pad 200 are very large, when the molten silicone gets in contact with the surface of the felt pad 200, a part of the molten silicone is infiltrated into the gaps among the fibers of the felt pad 200. In addition, because some of the fibers on the surface of the felt pad 200 extend to the bottom wall 120, strength of connection between the bottom wall 120 and the felt pad 200 becomes greater when the sleeve body 100 is solidified and shaped. The felt pad 200 and the sleeve body 100 are connected and fixed to each other via the hot-melt process. During shaping of the sleeve body 100, connected portions of the sleeve body 100 and the felt pad 200 are infiltrated into each other, so that thicknesses of the connected portions are equal to each other, and the bonding strength is the same across the felt pad 200. This can resolve the problem that the felt pad 200 warps or peels off due to a connection failure at a portion of the felt pad 200. When a force exerted on the bottom surface of the protective sleeve is great, the felt pad 200 is not prone to peel off from the bottom wall 120 because the material of the bottom wall 120 is infiltrated into the felt pad 200 during hot-melt connection between the bottom wall 120 and the felt pad 200. Further, because the friction coefficient of the felt pad 200 is smaller than the friction coefficient of the sleeve body 100, when the chair is moved against the floor, the protective sleeve has relatively higher movability and is not prone to fall off.
In some examples, the wrapping edge 210 is in a hot-melt connection with the lateral wall 110, so that the molten silicone can be infiltrated into gaps between fibers in the wrapping, edge 210. This can increase strength of connection between, the wrapping edge 210 and the lateral wall 110, and prevent the wrapping edge 210 from peeling off from the lateral wall 110. The felt pad 200 on the bottom wall 120 is connected and fixed to the lateral wall 110 through the wrapping edge 210 by performing hot-melt connection between the wrapping edge 210 and the lateral wall 110. This can prevent an edge, on the bottom wall 120, of the felt pad 200 from warping or peeling off, thereby making the felt pad 200 more firmly bonded.
Referring to
Referring to
In some examples, the first via hole 220 is provided at the center of the felt pad 200, so that the first via hole 220 corresponds to a central position of the bottom wall 120. Therefore, when the molten silicone enters the, mold through the first via hole 220, the molten silicone can be dispensed in the mold more uniformly, and be distributed on the surface, facing the bottom wall 120, of the felt pad 200 uniformly. This can effectively improve uniformity of material distribution, and resolve the problem that a portion of the felt pad 200 warps or peels off due to lack of the molten silicone at the portion, thereby making the felt pad 200 more stably sand firmly bonded.
Referring to
During shaping of the sleeve body 100, more of fibers at a portion, corresponding to the second via hole 131, of the felt pad 200 can be mutually infiltrated into the molten silicone, thereby increasing strength of connection between the sleeve body 100 and the felt pad 200. In some examples, there are a plurality of the second via hole 131 disposed on the bottom wall 120 in a scattered manner, to increase the strength of the connection between the felt pad 200 and the bottom wall 120 at a plurality of positions. Owing to the second via holes 131 disposed, in a scattered manner, uniformity of the molten silicone can be improved. Therefore, the molten silicone is distributed in the mold more uniformly. With the second via holes 131 distributed in a scattered manner, the molten silicone around the second via holes 131 can better dissipate heat to the felt pad 200 during shaping of the molten silicone, thereby making the structure of the sleeve body 100 more stable after shaping. In addition, the molten silicone can, be better infiltrated into the felt pad 200 during a heat dissipation process. In some examples, the second via hole 131 is a blind hole formed in the bottom wall 120 and extends from the outer surface of the bottom wall 120 in a direction away from the felt pad 200. In some examples, the second via holes 131 are distributed annularly with an axis of the bottom wall 120 as a center, so that the second via holes 131 are distributed at equal intervals. This further improves uniformity of the material of the bottom wall 120 of the sleeve body 100 and making the bottom wall 120 more firmly connected, to the sleeve body 100 and the felt pad 200. In some examples, the second via holes 131 are spaced apart from the first via hole 220. The first via hole 220 is disposed at the center of the felt pad 200. The second via holes 131 are annularly disposed around the first via hole 220. Fibers at portions, corresponding to the first via hole 220 and the second via hole 131, of the felt pad 200 can extend into the material of the bottom wall 120, to form connection-reinforcing positions which take the axis of the bottom wall 120 as a center. Therefore, the strength of the connection between the felt pad 200 and the bottom wall 120 is increased.
Referring to
In some examples, the inner surface of the bottom wall 120 is provided with, a convex block 132. The convex block 132 is used as a retaining structure on the bottom wall 120. When the bottom surface of the chair foot is in contact with the bottom wall 120, the convex block 132 can prevent the bottom surface of the chair foot from slipping relative to the bottom wall 120. When the chair foot is of a hollow structure, the convex block 132 can be retained inside the surface of the chair foot, to prevent displacement of the chair foot. When the chair foot is of a solid structure, the convex block 132 may be abutted on a side surface of the bottom of the chair foot. In some examples, there are a plurality of the convex blocks 132 disposed on the bottom wall 120 in a scattered manner. When the chair foot, is of a hollow structure, the plurality of convex blocks 132 may be embedded in the chair foot or distributed on an inner side and an outer side of the chair foot, thereby retaining the chair foot. When the chair foot is of a solid structure, the plurality of convex blocks 132 may be all abutted against the bottom surface of the chair foot. In some examples, the convex block 132 may be a hemispherical structure protruding from a surface of the bottom wall 120, and the convex block 132 has an arc-shaped outer surface. Alternatively, the convex block 132 may be of another shape, such as a conical shape or a columnar shape.
In some examples, the inner surface of the lateral wall 110 is provided with at least one convex rib 160. The at least one convex rib 160 is used as a retaining structure on the lateral wall 110, and is configured to press against the lateral wall 110 of the chair foot and prevent the sleeve body 100 from rotating relative to the chair foot. The convex rib 160 may be a strip-shaped structure disposed on the lateral wall 110. There may be a plurality of convex ribs 160 disposed at intervals on the lateral wall 110. Distances between adjacent convex, ribs 160 may be the same or different. Heights and/or lengths of adjacent convex ribs 160 may be the same or different.
In some examples, when the lateral wall 110 includes the first lateral wall section 130, the second lateral wall section 140, and the third lateral wall section 150 that are sequentially connected, the convex rib 160 may be disposed at the joint between the second lateral wall section 140 and the third lateral wall section 150. The convex rib 160 may extend from the second lateral wall section 140 to the third lateral wall section 150. Because the second lateral wall section 140 gradually contracts from bottom to top, the second lateral wall section 140 and the third lateral wall section 150 are tightly attached to an outer surface of the chair foot when the chair foot is sheathed in the sleeve body 100. Therefore, the convex rib 160 can increase friction forces between the second lateral wall section 140 and the outer surface of the chair foot and between the third lateral wall section 150 and the outer surface of the chair foot, thereby preventing the sleeve body 100 from rotating relative to the chair foot and preventing the sleeve body 100 from falling off.
The protective sleeve described in the above examples of the present application can be used on a chair. In some examples, the chair is provided with a chair foot. The sleeve body 100 sheathes the chair foot. The chair foot is inserted into the sleeve body 100 through an opening of the sleeve body 100. The chair foot is provided with the protective sleeve, and the sleeve body 100 is in a hot-melt connection with the felt pad 200, so that the felt pad 200 and the bottom wall of the sleeve body 100 are mutually infiltrated, thereby preventing the felt pad 200 from falling off. Owing to the smaller friction coefficient of the felt pad 200, when the chair is moved, the friction force between the felt pad 200 and the floor is smaller, thereby resolving the problem that a protective sleeve falls off due to too large a friction force.
Finally, it should be noted that the above embodiments are only used to illustrate the technical schemes of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that modifications can be made to the technical schemes described in the aforementioned embodiments, or equivalent replacements can be made to some of the technical features in the embodiments; and these modifications or replacements do not make the essence of the corresponding technical schemes deviate from the principle and scope of the technical schemes of the embodiments of the present application.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202220804403.1 | Apr 2022 | CN | national |
