Decorative sleeve for bent plate of chair back

Abstract

The utility model relates to a chair back bent plate decoration sleeve which comprises a sleeve body, the sleeve body is provided with a penetrating hole, the penetrating hole is in a long strip shape, a plurality of protruding points are arranged on the inner wall of the penetrating hole, and the protruding points are distributed in the circumferential direction of the inner wall of the penetrating hole at intervals. The sleeve body is provided with a buckle brim annularly arranged on the edge of an opening of the penetrating hole, an arc-shaped notch is formed in the long edge of the side, away from the buckle brim, of the sleeve body, and the arc-shaped notch extends in the length direction of the sleeve body and is communicated with the penetrating hole. According to the chair back bent plate decoration sleeve, reliable connection between the chair back bent plate decoration sleeve and a bent plate can be enhanced through friction force through the arranged penetrating hole and the protruding points distributed in the circumferential direction, the arc-shaped notch formed in one side of the chair back bent plate decoration sleeve is communicated with the penetrating hole, and therefore the whole sleeve body can be tightly attached to the bent shape of the bent plate; and the decorative and practical requirements of the backrest structure of the dental chair can be well met.

Description

Technical Field

[0001] The utility model relates to the technical field of medical device accessories, in particular to a chair back curved plate modification cover. Background Art

[0002] In the relevant technology, dental chairs are mainly used for oral surgery and examination and treatment of oral diseases. Most dental chairs on the market currently use an electric push rod structure with a fixed upper structure. The pitch mechanism of the dental chair backrest usually adopts an inner high fulcrum structure. In this structure, the pitch of the chair backrest is achieved by a bent plate and a rocker mechanism installed on both sides. One end of the bent plate is fixed to the chair back, and the other end is hinged to the rocker. The rocker rotates around the support rotation axis, thereby driving the backrest to produce a pitch movement.

[0003] Traditional bent plates are usually directly connected to the chair backrest through fasteners such as screws. This connection method exposes the screws and other fasteners, affecting the overall aesthetics. Summary of the Invention

[0004] In order to solve the above problems, the utility model provides a chair back curved plate modification cover which can achieve a firm connection with the curved plate and can closely fit the bent shape of the curved plate.

[0005] In order to achieve the above-mentioned purpose, the chair back curved plate modification cover designed by the present invention includes a cover body, the cover body has a through hole, the through hole is long and strip-shaped, and a plurality of protrusions are provided on the inner wall of the through hole, and the plurality of protrusions are arranged at intervals along the circumference of the inner wall of the through hole; the cover body has a buckle eave arranged around the edge of the opening of the through hole, and the cover body is provided with an arc-shaped notch on the long side away from the buckle eaves, and the arc-shaped notch extends along the length direction of the cover body and is connected to the through hole.

[0006] In order to improve the appearance quality of the product, the arc-shaped notch is an arc surface, which is a circular arc surface, a parabola or a curved surface formed by splicing multiple planes.

[0007] In order to make the connection position more concealed, the vertical projection position of the buckle flange on the sleeve body is located within the outer edge of the corresponding side of the sleeve body.

[0008] In order to reduce blind spots during cleaning, the outer edges of the sleeve body and the arc-shaped notch are rounded.

[0009] In order to reduce the total weight of the product, a weight-reducing groove is provided on the side of the sleeve body facing away from the arc-shaped notch.

[0010] In order to increase the friction force, the side of the protrusion facing away from the inner wall of the through hole is a flat surface, and the flat surface is a frosted surface.

[0011] In order to avoid potential weaknesses at the seams, the sleeve body, the protrusions and the buckle eaves are integrally formed silicone products.

[0012] In order to ensure good durability and wear resistance, the hardness of the sleeve body is HA55±5 degrees.

[0013] The chair back curved plate modification cover designed by the present invention can achieve a reliable connection with the curved plate by enhancing friction through the provided through-holes and the convex points distributed along the circumference, and the arc-shaped notch opened on one side is connected with the through-holes, so that the entire cover body can fit closely with the bending shape of the curved plate, which can better meet the decorative and practical requirements of the dental chair back structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present application;

[0015] Figure 2 is another three-dimensional schematic diagram of an embodiment of the present application;

[0016] Figure 3 1 is a plan view of a buckle eave in an embodiment of the present application;

[0017] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle;

[0018] Figure 5 It is an assembly diagram of an embodiment of the present application;

[0019] Among them: a sleeve body 10, a through hole 20, a protrusion 30, a buckle flange 40, an arc-shaped notch 50, and a weight-reducing groove 60. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0021] Example 1.

[0022] like Figure 1-5 As shown, the chair back bent plate modification cover described in this embodiment includes a cover body 10, the cover body 10 has a through hole 20, the through hole 20 is in the shape of an elongated strip, and a plurality of protrusions 30 are provided on the inner wall of the through hole 20, and the plurality of protrusions 30 are arranged at intervals along the circumference of the inner wall of the through hole 20; the cover body 10 has a buckle eave 40 arranged around the opening edge of the through hole 20, and the cover body 10 is provided with an arc-shaped notch 50 on the long side away from the buckle eave 40, and the arc-shaped notch 50 extends along the length direction of the cover body 10 and is connected to the through hole 20.

[0023] When using, Figure 5As shown, one end of the curved plate is first inserted into the through-hole 20 of the sleeve body 10. The friction between the inner wall of the through-hole 20 and the protrusions 30 secures the sleeve body 10 to the curved plate. Once the curved plate and backrest are securely attached, the buckle 40 engages with the corresponding structure on the backrest, while the arc-shaped notch 50 of the sleeve body 10 connects with the through-hole 20. This conforms to the curved shape of the curved plate itself, concealing the connection between the curved plate and the backrest while ensuring that the transition area between the two is free of protruding components and discordant recesses, creating a more harmonious appearance. Furthermore, the use of the sleeve body 10 reduces the possibility of foreign matter intruding into the connection between the curved plate and the backrest, preventing the accumulation of foreign matter such as dust and debris, thereby maintaining the cleanliness and hygiene of the dental chair and reducing maintenance and cleaning workload.

[0024] In this embodiment, the sleeve body 10, the protrusions 30 and the buckle eaves 40 are integrally formed of a silicone product to avoid potential weaknesses at the joints, wherein the hardness of the sleeve body 10, the protrusions 30 and the buckle eaves 40 are all HA55±5 degrees, thereby achieving good durability and wear resistance.

[0025] In some embodiments, to enhance the product's appearance, the arc-shaped notch 50 is a curved surface, such as a circular arc, a parabola, or a curved surface formed by stitching together multiple planes. In this embodiment, compared to a linear notch, the arc-shaped notch appears smoother and more harmonious with the curved shape of the backrest, enhancing the overall aesthetics.

[0026] In some embodiments, as Figure 3 and Figure 4 As shown, in order to make the connection position more concealed, the vertical projection of the buckle 40 on the cover body 10 is located within the outer edge of the corresponding side of the cover body 10. In this way, when the cover body 10 is assembled to the bent plate and the backrest, the buckle 40 itself will not be exposed. On the one hand, the good appearance and decorative effect of the entire cover body 10 are maintained. On the other hand, the buckle 40 is prevented from being accidentally bumped or interfered with during use, thereby ensuring the normal use of the cover body 10.

[0027] In some embodiments, the outer edges of the cover body 10 and the arc-shaped notch 50 are both rounded. This structural design avoids right-angled or sharp edges that easily leave dead corners during cleaning, making it difficult to completely remove stains. After the rounded corners are processed, the edges are smoothly transitioned and there are no dead corners. This eliminates the need for excessive squeezing and applying force during cleaning, resulting in better cleaning results. In addition, compared to right-angled edges, the rounded edges appear more smooth and coordinated visually, making the overall shape lines softer, which helps to enhance the decorativeness and aesthetics of the cover body 10.

[0028] In some embodiments, as Figure 2 As shown, a weight-reducing groove 60 is provided on the side of the sleeve body 10 facing away from the arc-shaped notch 50. In this embodiment, the dental chair backrest requires frequent pitching and tilting movements during use. If the sleeve body 10 is too heavy, it will increase the load on the backrest and affect the service life of the mechanism. The design of the weight-reducing groove 60 can effectively reduce the weight of the sleeve body 10, thereby reducing the load on the backrest mechanism.

[0029] In some embodiments, the side of the protrusion 30 facing away from the inner wall of the through hole 20 is a flat surface, which is a frosted surface. In this embodiment, the frosted surface has a higher coefficient of friction than a smooth surface. When the sleeve body 10 is mounted on the curved plate, the frosted surface of the protrusion 30 contacts the curved plate to generate greater friction, thereby enhancing the securement of the sleeve body 10 to the curved plate.

[0030] The chair back curved plate modification cover provided in this embodiment can achieve a reliable connection with the curved plate by enhancing friction through the set through-holes and the protrusions distributed along the circumference, and the arc-shaped notch opened on one side is connected to the through-holes, so that the entire cover can fit closely to the bending shape of the curved plate, which can better meet the decorative and practical needs of the dental chair back structure.

[0031] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A chair back curved plate modification cover, comprising a cover body, characterized in that: The sleeve body has a through hole, the through hole is in the shape of a long strip, and a plurality of protrusions are arranged on the inner wall of the through hole, and the plurality of protrusions are arranged at intervals along the circumference of the inner wall of the through hole; the sleeve body has a buckle flange arranged around the opening edge of the through hole, and the sleeve body is provided with an arc-shaped notch on the long side away from the buckle flange, and the arc-shaped notch extends along the length direction of the sleeve body and is connected to the through hole.

2. The chair back curved plate modification cover according to claim 1, characterized in that: The arc-shaped notch is an arc surface, which is a circular arc surface, a parabola, or a curved surface formed by splicing a plurality of planes.

3. The chair back curved plate modification cover according to claim 1, characterized in that: The vertical projection position of the buckle flange on the sleeve body is located within the outer edge of the corresponding side of the sleeve body.

4. The chair back curved plate modification cover according to claim 1, characterized in that: The outer edges of the sleeve body and the arc-shaped notch are rounded.

5. The chair back curved plate modification cover according to claim 1, characterized in that: A weight-reducing groove is provided on one side of the sleeve body away from the arc-shaped notch.

6. The chair back curved plate modification cover according to claim 1, characterized in that: The side of the protrusion facing away from the inner wall of the penetration hole is a plane, and the plane is a frosted surface.

7. The chair back curved plate modification cover according to claim 1 or 6, characterized in that: The sleeve body, the convex points and the buckle flange are integrally formed into a silicone product.

8. The chair back curved plate modification cover according to claim 7, characterized in that: The hardness of the sleeve body is HA55±5 degrees.

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