TWI847898B - A back support piece - Google Patents

Abstract

A back support piece is used to solve the problem that the conventional chair back or cushion cannot provide good support. Includes: a resisting body, which has a load deformation amount. When the resisting body is loaded with a load of 15kg to 30kg, the load deformation amount is 1.0 to 7.0 mm.

Description

Back protector

The present invention relates to a back protector for supporting or supporting the back of a user, in particular a back protector made of a material with a predetermined load deformation amount.

In daily life, people usually sit in a sitting position, such as when they are on public transportation or resting, especially when they need to sit on a chair for a long time to work. Therefore, it can be said that people sit for nearly half of the day. The most important thing for people who sit is the support and comfort of the back. For example, people nowadays will choose a chair with a soft backrest, or place a soft cushion between the back and the chair back to improve the comfort of the backrest. However, the above-mentioned backrest or cushion cannot provide good support, which will cause the user to have a bad sitting posture or muscle soreness in the long run.

In order to solve the above problems, the purpose of the present invention is to provide a back protector with better back support.

The directions or similar terms described in the present invention, such as "front", "rear", "left", "right", "upper", "lower", "inner", "outer", "side", etc., are mainly for reference to the directions of the attached drawings. Each direction or similar terms are only used to assist in the description and understanding of the various embodiments of the present invention, and are not used to limit the present invention.

The quantifiers "one" or "a" used in the components and parts described in the present invention are only for the convenience of use and to provide a general meaning of the scope of the present invention; they should be interpreted in the present invention as including one or at least one, and the single concept also includes the plural case, unless it is obvious that it means otherwise.

The similar terms such as "combination", "assembly" or "assembly" mentioned in the present invention mainly include the connection that can be separated without damaging the components, or the connection that makes the components inseparable, which can be selected by those with ordinary knowledge in the field according to the materials of the components to be connected or the assembly requirements.

The back protector of the present invention comprises: a supporting body, the supporting body has a load deformation, when the supporting body is loaded with 15kg~30kg, the load deformation is 1.0~7.0mm, the supporting body has a first opposite side edge in a first direction and a second opposite side edge in a second direction, the first direction and the second direction are perpendicular to each other, the maximum vertical distance between the first opposite side edges is 200~450mm, and the maximum vertical distance between the second opposite side edges is 100~300mm.

Accordingly, the back protector of the present invention can make the supporting body have both supporting comfort and back support through the predetermined load deformation, so that the user can maintain a correct sitting posture and relieve muscle discomfort when sitting for a long time, thereby improving the quality of life. In addition, the supporting body can have an appropriate area and provide the function of supporting the user's back.

Among them, the load deformation is 1.4~5.3mm. In this way, the abutment body has a better back support effect.

Among them, the load deformation is 1.5~4.9mm. In this way, the abutment body has a better back support effect.

The weight of the abutment body is 25~825g. Thus, the abutment body has an appropriate weight and is convenient for users to hold.

The average thickness of the abutment body can be 0.8-2.5 mm. In this way, the abutment body can have better strength and is not easily damaged by dents and folds.

The abutment body may have an abutment surface, which is a concave arc surface. In this way, the abutment surface can roughly conform to the back curve of the user, so that the abutment surface has a better back support effect.

The abutment surface has a curvature radius of 150~400mm.

The material of the abutment body is selected from the group consisting of polymer-based carbon fiber composites, aluminum alloys, titanium alloys, magnesium alloys, stainless steel, advanced high-strength steel, and polymer-based glass fiber composites. Thus, the abutment body can form the effect of the predetermined load deformation through the material.

The abutment body may include a first layer and a second layer, the first layer is made of aluminum, and the second layer is made of glass fiber or carbon fiber. Thus, the abutment body formed by the composite material has a better effect than the abutment body formed by a single material.

The back protector of the present invention may further include a cushion body, the abutment body having a relative coupling surface and a abutment surface, and the cushion body is coupled to the coupling surface. In this way, the abutment body has the effect of being able to lean against the chair back more stably.

1: Abutment

1a: First layer

1b: Second layer

11: First relative side edge

12: Second opposite side edge

13: Abutment surface

14: Bonding surface

D1: First direction

D2: Second direction

T: Pad

H: Distance

[Figure 1] A three-dimensional diagram of an embodiment of the present invention.

[Figure 2] Sectional view along line A-A of Figure 1.

[Figure 3] An enlarged view of the local structure of B as shown in Figure 2.

[Figure 4] Schematic diagram of load deformation as shown in Figure 2.

[Figure 5] Load deformation variation diagram of an embodiment.

[Figure 6] Load deformation variation diagram of another embodiment.

[Figure 7] The variation of load deformation with different curvature radii.

[Figure 8] The variation of load deformation at different thicknesses.

In order to make the above and other purposes, features and advantages of the present invention more clearly understood, the following specifically cites the preferred embodiments of the present invention and provides a detailed description in conjunction with the attached drawings; in addition, the same symbols in different drawings are considered the same and their descriptions will be omitted.

Please refer to Figure 1, which is the first embodiment of the back protector of the present invention, and includes a support body 1, which has a predetermined specific rigidity so that the support body 1 has a load deformation amount.

The abutment body 1 is used for the user's back to abut against and support the user's back. The abutment body 1 can be a plate. The abutment body 1 can have a plane of any geometric shape such as a circle, a rectangle or a triangle, and the present invention is not limited thereto. The average thickness of the abutment body 1 can be 0.5-2.5 mm, so that the abutment body 1 can have better strength and is not easily damaged by dents. The weight of the abutment body 1 can be 25-825 g, so that the abutment body 1 can be conveniently held by the user, so as to have better convenience of use. In this embodiment, the abutment body 1 is a rectangular plate, and the abutment body 1 has a first opposite side edge 11 in a first direction D1 and a second opposite side edge 12 in a second direction D2. The first direction D1 and the second direction D2 are perpendicular to each other. The maximum vertical distance between the first opposite side edges 11 can be 200~450mm (that is, the length of the second opposite side edge 12 is 200~450mm); the maximum vertical distance between the second opposite side edges 12 can be 100~300mm (that is, the length of the first opposite side edge 11 is 100~300mm). In this way, the abutment body 1 can have an appropriate area for supporting the user's back.

Please refer to the first and second figures, the abutting body 1 has an abutting surface 13, which can be used for the back of the user to contact and abut. The abutting surface 13 can be roughly a flat surface, that is, the abutting surface 13 will not form a large height difference. When the back of the user abuts against the abutting surface 13, the user will not feel discomfort in the back due to the large height difference. It has a better abutting comfort. In another embodiment, the abutting surface 13 can be a concave arc surface on the cross section of the abutting body 1 in the first direction D1, so that the abutting surface 13 can have a curvature radius of 150~400mm, which can roughly conform to the back curve of the user, so that the abutting surface 13 has better back support. In this way, the abutting body 1 can be placed on, for example, the back of a chair for the user to abut. Alternatively, the abutment body 1 may have a relative abutment surface 13 and a bonding surface 14, and the bonding surface 14 may be bonded to a cushion body T by, for example, gluing, Velcro or tying, and the cushion body T may be, for example, silicone, nylon filler, cotton filler, etc., so that the abutment body 1 can be more stably placed against the chair back.

The abutment body 1 can be formed of a single predetermined material or a plurality of predetermined materials, and therefore, the abutment body 1 can have a predetermined specific rigidity, for example. The predetermined specific rigidity refers to the ratio of the rigidity (also known as tensile modulus or bending modulus, GPa) of the single predetermined material to the density (g/cm ³ ) of the single predetermined material, or the ratio of the overall rigidity of the combination of the plurality of predetermined materials to the density of the plurality of predetermined materials. For example, the material of the abutment body 1 can be selected from the group consisting of polymer-based carbon fiber composites (i.e., carbon fiber bonded to polymer resin), aluminum alloys, titanium alloys, magnesium alloys, stainless steel, advanced high strength steel (Advanced High Strength Steel) and polymer-based glass fiber composites (i.e., glass fiber bonded to polymer resin).

As shown in FIG. 3 , when the abutment body 1 is formed of several predetermined materials, the several predetermined materials can be laminated into a composite material by bonding them with a polymer material such as polypropylene, polymethyl methacrylate, polyamide, polyacetal, polycarbonate, polyether ketone, phenolic resin, epoxy resin, etc. For example, the several predetermined materials of the abutment body 1 can be a composite material formed of aluminum and glass fiber, or a composite material formed of aluminum and carbon fiber. In this embodiment, the abutment body 1 is formed by two first layers 1a and a second layer 1b. The second layer 1b is located between the two first layers 1a. The material of the first layer 1a can be aluminum, and the material of the second layer 1b can be glass fiber or carbon fiber. In this way, the abutment body 1 can have better strength and lightness, and the aluminum can make the abutment body 1 have better corrosion resistance, that is, the properties of the abutment body 1 formed by the composite material are better than those of the abutment body 1 formed by a single material. Accordingly, by the above-mentioned material and the predetermined specific rigidity, the abutment body 1 can have the load deformation amount.

Please refer to FIG. 4 . Specifically, the load deformation can be defined as the degree to which the abutting body 1 is deformed in the force direction P after a force is applied to the abutting body 1 in the force direction P. More specifically, the force can be applied to the geometric center of the abutting body 1 in the force direction P. For example, after the first opposite side edge 11 or the second opposite side edge 12 of the abutting body 1 is fixed, a force is applied to the geometric center of the abutting body 1. When the geometric center is not subjected to force, it will be deformed in the force direction P and displaced by a distance H. The distance H is the load deformation. As shown in Figure 5, in one embodiment, the first relative side edge 11 is fixed to 250mm, and the abutting body 1 with different lengths of the second relative side edge 12 is subjected to different load deformations. In addition, Table 1 shows the load deformations in Figure 5 after 15kg and 30kg of force are applied. It can be seen that the load deformation of 15kg is 1.0~3.5, and the load deformation of 30kg is 2.1~7.0.

As shown in FIG. 6, in another embodiment, the second opposite side edge 12 is fixed to 380 mm, and the abutting body 1 with different lengths of the first opposite side edge 11 is subjected to different load deformations after different applied forces. Table 2 shows the load deformations after 15 kg and 30 kg of applied forces in FIG. 6. It can be seen that the load deformation of 15 kg is 2.2~3.0, and the load deformation of 30 kg is 4.1~4.7.

As shown in FIG. 7, in another embodiment, the abutting body 1 with the first opposite side edge 11 of 250 mm and the second opposite side edge 12 of 380 mm is formed with different curvature radii (cross sections in the first direction D1) and the load deformation after different applied forces. In addition, Table 3 shows the load deformation after 15 kg and 30 kg applied forces in FIG. 7. It can be seen that the load deformation of 15 kg is 1.7~2.6, and the load deformation of 30 kg is 3.0~4.3.

As shown in FIG. 8, in another embodiment, the abutment body 1 with the first relative side edge 11 being 250 mm and the second relative side edge 12 being 380 mm is formed with different thicknesses, and the load deformation after different applied forces. In addition, Table 4 shows the load deformation after 15 kg and 30 kg applied forces in FIG. 8. It can be seen that the load deformation of 15 kg is 2.4~3.1, and the load deformation of 30 kg is 4.2~5.3.

In order to prove that the back protector of the present invention has good comfort and back support, the back protectors made of aluminum/carbon fiber and carbon fiber (groups 1 to 4) were placed on the back of the seat for the user to lean against. The results are shown in Table 5 below, compared with the back protectors without back protectors (group 5), that is, the user directly leans against the back of the seat.

According to the above test results, when the user leans against the back guard of the present invention (Groups 1 to 4), compared with not using the back guard (Group 5), there is a smaller average backrest pressure, that is, the back guard of the present invention has good back support and has a pressure reduction effect. In addition, when the user leans against the back guard of the present invention (Groups 1 to 4), compared with not using the back guard (Group 5), there is a smaller static seat pressure distribution value, that is, when the user leans against the back of the seat without using the back guard, in order to form a better leaning comfort, the position of the back against the back of the seat is easily moved more frequently. Therefore, taking the area of the entire back of the chair as 100%, the user will press a relatively large area of the back of the chair when leaning against the back of the chair. In contrast, when the user leans against the back protector of the present invention, the user does not need to move the back too much to achieve a better leaning comfort. Therefore, the user only needs to press a relatively small area of the chair back during leaning to form a comfortable sitting posture, which has a good leaning comfort effect.

In summary, the back protector of the present invention can achieve both comfort and back support through the predetermined load deformation, so that the user can maintain a correct sitting posture and relieve muscle discomfort when sitting for a long time, thereby improving the quality of life.

Although the present invention has been disclosed using the above preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art may make various changes and modifications to the above embodiments within the spirit and scope of the present invention, and the changes and modifications are still within the technical scope protected by the present invention. Therefore, the protection scope of the present invention shall include all changes within the meaning and equivalent scope recorded in the attached patent application scope.

1: Abutment

11: First relative side edge

12: Second opposite side edge

13: Abutment surface

14: Bonding surface

D1: First direction

D2: Second direction

T: Pad

Claims (10)

A back protector comprises: a supporting body, the supporting body having a load deformation, when the supporting body is loaded with 15kg-30kg, the load deformation is 1.0-7.0mm, the supporting body having a first opposite side edge in a first direction and a second opposite side edge in a second direction, the first direction and the second direction are perpendicular to each other, the maximum vertical distance between the first opposite side edges is 200-450mm, and the maximum vertical distance between the second opposite side edges is 100-300mm. For example, the back protector of claim 1, wherein the load deformation is 1.4~5.3mm. For example, the back protector of claim 2, wherein the load deformation is 1.5~4.9mm. As in claim 1, the back protector has a weight of 25-825g. As in claim 1, the back protector has an average thickness of 0.8-2.5 mm. As in claim 1, the back protector, wherein the abutment body has a abutment surface, and the abutment surface is a concave arc surface. As in claim 6, the back protector, wherein the abutment surface has a curvature radius of 150-400 mm. As in claim 1, the back protector, wherein the material of the abutment body is selected from the group consisting of polymer-based carbon fiber composites, aluminum alloys, titanium alloys, magnesium alloys, stainless steel, advanced high-strength steel, and polymer-based glass fiber composites. As in claim 1, the back protector has a first layer and a second layer, the first layer is made of aluminum, and the second layer is made of glass fiber or carbon fiber. The back protector of claim 1 further comprises a pad, the abutment body having a bonding surface and an abutment surface opposite to each other, and the pad is bonded to the bonding surface.

Images