CN210121012U - Spring string and spring core - Google Patents

Abstract

The utility model discloses a spring string and a spring core body, wherein the spring string comprises a plurality of string sections which are sequentially connected along the longitudinal direction, each string section comprises a cloth bag and at least one spring, the springs are coiled into a spiral shape by metal wires, the cloth bag is provided with at least one bag chamber, the at least one spring is respectively and correspondingly arranged in the at least one bag chamber, the plurality of string sections comprise a first outermost string section, a second outermost string section and a middle string section connected between the first outermost string section and the second outermost string section, the stiffness of the springs of the first outermost string section and the stiffness of the springs of the second outermost string section are both different from the stiffness of the springs of the middle string section, the cloth bags of the first outermost string section and the second outermost string section are welded or bonded with the cloth bags of the middle string section. The utility model discloses a mattress comfort level that the spring cluster formed is high, has improved the user and has used the impression.

Description

Spring string and spring core

Technical Field

The utility model relates to a technical field is made to the spring, more specifically relates to a spring cluster and spring core.

Background

Springs are widely used for producing spring cores for mattresses and sofas, the spring core comprising a plurality of springs arranged in a plurality of rows in a longitudinal direction and in a plurality of columns in a transverse direction. In the related art, the springs in the spring core body have the same specification and size and the same direction. Therefore, the hardness of each part in the spring core body is basically the same, the spring core body can not adapt to the requirements of a human body, the comfort level is reduced, and the use feeling of a user is influenced.

Disclosure of Invention

Therefore, the utility model provides a spring cluster, the mattress comfort level that this spring cluster formed is high, has improved the user and has used the impression.

The utility model also provides a spring core.

The spring string according to the embodiment of the utility model comprises a plurality of string sections which are sequentially connected along the longitudinal direction, each string section comprises a cloth bag and at least one spring, the springs are coiled into a spiral shape by metal wires, the cloth bag is provided with at least one bag chamber, the at least one spring is respectively and correspondingly arranged in the at least one bag chamber, the plurality of string sections comprise a first outermost string section, a second outermost string section and a middle string section connected between the first outermost string section and the second outermost string section, the springs of the first outermost string section and the springs of the middle string section have different rigidities, the springs of the second outermost string section and the springs of the middle string section have different rigidities, the cloth bags of the first outermost string section and the cloth bags of the middle string section are welded or bonded with each other, and the cloth bags of the second outermost string section and the cloth bags of the middle string section are welded or bonded with each other.

According to the utility model discloses the spring cluster, through setting up along vertically consecutive first outside cluster section, middle cluster section and the second outside cluster section, and all set the rigidity of the spring of first outside cluster section and the rigidity of the spring of second outside cluster section to different with the rigidity of the spring of middle cluster section, can make the rigidity of the spring of the outside part of spring cluster be different from the rigidity of the spring of the middle part of spring cluster to the mattress comfort level of formation is high, has improved the user and has used the impression.

In some embodiments, the springs of the first outermost string are the same stiffness as the springs of the second outermost string.

In some embodiments, the cloth bags of the first outermost string are of a different color than the cloth bags of the intermediate string, and the cloth bags of the second outermost string are of a different color than the cloth bags of the intermediate string.

In some embodiments, the cloth bags of the first outermost string are of a different color than the cloth bags of the intermediate string, and the cloth bags of the second outermost string are of a different color than the cloth bags of the intermediate string.

In some embodiments, the cloth bags of the first outermost string are the same color as the cloth bags of the second outermost string.

In some embodiments, the color of the cloth bags of the first outermost string section and the color of the cloth bags of the second outermost string section are blue or red, and the color of the cloth bags of the middle string section is white.

In some embodiments, at least one of the effective number of turns of the springs of the first and second outermost string sections and the springs of the middle string section, the pitch diameter of the springs, the stiffness of the wire, and the diameter of the wire are different from each other.

In some embodiments, the springs of the first outermost string are the same number as the springs of the second outermost string and are less than the number of springs of the middle string.

In some embodiments, the cloth bags of the intermediate string section are integral bags.

In some embodiments, the stiffness of the springs of the first outermost string section is greater than the stiffness of the springs of the middle string section, and the stiffness of the springs of the second outermost string section is greater than the stiffness of the springs of the middle string section.

According to the utility model discloses the spring core of the embodiment of the second aspect includes a plurality of spring clusters, and is a plurality of the spring cluster sets up along transverse arrangement, and every spring cluster is along longitudinal extension and including sack and a plurality of spring, the spring is coiled into the heliciform by the wire, the sack has the edge a plurality of pockets independent each other of longitudinal arrangement, a plurality of springs are established respectively in a plurality of pockets, the spring core falls into a plurality of regions, and the rigidity of the spring in at least one region is different with the rigidity of the spring in the remaining region, just the colour of at least one region's sack with the colour of the sack in all the other regions is different.

According to the utility model discloses spring core body through dividing into a plurality of regions including the spring core body of a plurality of spring clusters, and the rigidity of the spring in at least one region and the colour of sack are different respectively with the colour of the spring in the remaining region and the colour of sack, can adapt to human demand, have improved the comfort level, have improved user's use impression.

In some embodiments, the at least one region is two or more, the stiffness of the springs in the at least one region is the same, the color of the cloth bag in the at least one region is the same, the stiffness of the springs in the remaining regions is the same, and the color of the cloth bag in the remaining regions is the same.

In some embodiments, the spring core comprises a middle region and a peripheral region, the peripheral region surrounding the middle region, the stiffness of the springs in the middle region being different from the stiffness of the springs in the peripheral region, and the color of the cloth bag in the middle region being different from the color of the cloth bag in the peripheral region.

In some embodiments, at least a portion of the plurality of spring strings are the spring strings of any of the embodiments described above.

In some embodiments, the plurality of spring strings include a plurality of first spring strings and a plurality of second spring strings, the plurality of second spring strings are arranged in the transverse direction, a part of the first spring strings are arranged on a first side of the plurality of second spring strings in the transverse direction, the rest of the first spring strings are arranged on a second side of the plurality of second spring strings in the transverse direction, the second spring strings are the spring strings in any one of the above embodiments, the stiffness of the springs of the first spring strings is the same as the stiffness of the springs of the first outermost string section and the second outermost string section in the second spring strings, and the cloth bags of the first spring strings are the same as the cloth bags of the first outermost string section and the second outermost string section in the second spring strings in color.

In some embodiments, the stiffness of the springs in the at least one region is greater than the stiffness of the springs in the remaining regions.

Drawings

Fig. 1 is a schematic view of a string section of a spring string according to an embodiment of the present invention.

Fig. 2 is a front view of a spring string according to an embodiment of the present invention.

Fig. 3 is a top view of a spring string according to an embodiment of the present invention.

Fig. 4 is a schematic view of a spring core according to an embodiment of the present invention.

Reference numerals:

the spring core body 200, the middle area 201, the peripheral area 202, the spring strings 100 and 210, the first outermost string section 11, the second outermost string section 12, the middle string section 13, the first spring string 211, the second spring string 212, the cloth bag 1 and the spring 2.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

A spring core and a spring string according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.

A spring core according to an embodiment of the present invention is described below.

As shown in fig. 4, the spring core 200 according to the embodiment of the present invention includes a plurality of spring strings 210, and the plurality of spring strings 210 are arranged in a transverse arrangement. Each spring string 210 extends in a longitudinal direction and includes a cloth bag 1 and a plurality of springs 2, the springs 2 being wound in a spiral shape from a metal wire, for example, the springs 1 are wound in a spiral shape from a steel wire or an aluminum wire or the like. Wherein the higher the stiffness of the spring 1, the harder the person feels when compressing the spring 1, the lower the stiffness of the spring 1, the softer the person feels when compressing the spring 1, i.e. the stiffness of the spring 1 is different, and the different the softness of the spring 1 when the person compresses the spring 1. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The cloth bag 1 has a plurality of independent bag chambers arranged in the longitudinal direction, and a plurality of springs 2 are respectively provided in the plurality of bag chambers.

The spring core 200 is divided into a plurality of regions, the rigidity of the springs 2 in at least one region is different from the rigidity of the springs 2 in the remaining regions, and the color of the cloth bag 1 in at least one region is different from the color of the cloth bag 1 in the remaining regions. In other words, as shown in fig. 4, the spring core 200 is divided into a plurality of regions, at least two regions of the plurality of regions have different rigidities of the springs 2, and the at least two regions have different colors of the cloth bags 1.

Specifically, at least one of the effective number of turns of the spring 2, the pitch diameter of the spring 2, the diameter of the wire, and the hardness of the wire in at least one region and the remaining region are different from each other. It will be appreciated that the effective number of turns of the spring 2, the pitch diameter of the spring 2, the diameter of the wire and the stiffness of the wire all affect the stiffness of the spring 1. Wherein the effective number of turns of the spring 1 is increased and the rigidity of the spring 2 is reduced; the pitch diameter of the spring 2 is increased, and the rigidity of the spring 2 is reduced; the diameter of the metal wire is increased, and the rigidity of the spring 2 is increased; the hardness of the wire increases and the stiffness of the spring 2 increases.

According to the utility model discloses spring core 200 through the spring core 200 that will include a plurality of spring strings 210 fall into a plurality of regions, and the rigidity of the spring 2 in at least one region and the colour of sack 1 are different respectively with the rigidity of the spring 2 in the remaining region and the colour of sack 1, can adapt to human demand, have improved comfort level and user's use impression.

In some embodiments, the at least one region is two or more. The rigidity of the springs 2 in at least one region is the same, the color of the cloth bag 1 in at least one region is the same, the rigidity of the springs 2 in the rest regions is the same, and the color of the cloth bag 1 in the rest regions is the same. In other words, the stiffness of the springs 2 in two or more of the regions is different from the color of the cloth bag 1, the stiffness of the springs 2 in the two or more regions is the same, the color of the cloth bag 1 is the same, and the stiffness of the springs 2 in the other regions except the two or more regions is the same, and the color of the cloth bag 1 is the same.

In some embodiments, the spring core 200 comprises a middle region 201 and a peripheral region 202, the peripheral region 202 surrounding the middle region 201, the stiffness of the springs 2 in the middle region 201 being different from the stiffness of the springs 2 in the peripheral region 202, and the color of the cloth bag 1 of the middle region 201 being different from the color of the cloth bag 1 of the peripheral region.

As shown in fig. 4, the spring core 200 includes a middle region 201 located at the center of the spring core 200 and an outer peripheral region 202 surrounding the middle region 201. Wherein the stiffness of the springs 2 in the peripheral region 201 is the same, the stiffness of the springs 2 in the intermediate region 201 is the same, and the stiffness of the springs 2 in the peripheral region 201 is different from the stiffness of the springs 2 in the intermediate region 201. The cloth bags 1 in the peripheral area 201 are same in color, the cloth bags 1 in the middle area 201 are same in color, and the cloth bags 1 in the peripheral area 201 are different in color from the cloth bags 1 in the middle area 201.

In some specific embodiments, the stiffness of the springs 2 in the central region 201 is less than the stiffness of the springs 2 in the peripheral region 202, such that the central region 201 of the spring core 200 is relatively soft and the peripheral region 202 is relatively stiff, thereby improving comfort for a user sitting in the peripheral region 202 of the spring core 200 and lying in the central region 201.

In some embodiments, at least a portion of the plurality of spring strings 210 are spring strings 100 according to embodiments of the present invention. In other words, only a part of the plurality of spring strings 210 may be the spring string 100 according to the embodiment of the present invention, and each of the plurality of spring strings 200 may also be the spring string 100 according to the embodiment of the present invention.

A spring string according to an embodiment of the present invention is described below with reference to fig. 1 to 3.

As shown in fig. 1-3, according to the utility model discloses a spring cluster 100 includes a plurality of cluster sections, a plurality of cluster sections are along vertically consecutive, every cluster section includes sack 1 and at least one spring 2, spring 2 is coiled into the heliciform by the wire, sack 1 has at least one pocket, at least one spring 2 is established respectively in at least one pocket 1 correspondingly, a plurality of cluster sections include first outside cluster section 11, second outside cluster section 12 and connect the middle cluster section 13 between first outside cluster section 11 and second outside cluster section 12, the spring 2 of first outside cluster section 11 is different with the rigidity of the spring 2 of middle cluster section 13, the spring 2 of second outside cluster section 12 is different with the rigidity of the spring 2 of middle cluster section 13.

The cloth bags 1 of the first outermost string section 11 and the cloth bags 1 of the middle string section 13 are welded or bonded with each other, and the cloth bags 1 of the second outermost string section 12 and the cloth bags 1 of the middle string section 13 are welded or bonded with each other. In other words, the cloth bags 1 of the first outermost string section 11 and the cloth bags 1 of the middle string section 13 are welded together or adhered together with glue or the like to connect the first outermost string section 11 and the middle string section 13. Similarly, the cloth bags 1 of the second outermost string section 12 and the cloth bags 1 of the middle string section 13 are welded together or bonded together by glue or the like to connect the second outermost string section 12 and the middle string section 13.

According to the utility model discloses spring cluster 100, through setting up along vertically setting gradually and through the first outside cluster section 11 that sack 1 links to each other, middle cluster section 13 and the second outside cluster section 12, and all set the rigidity of the spring 2 of the first outside cluster section 11 and the rigidity of the spring 2 of the second outside cluster section 12 and the rigidity of the spring 2 of middle cluster section 13 to different, can make the rigidity of the spring 2 of the outside part of spring cluster 100 be different from the rigidity of the spring 2 of the middle part of spring cluster 100, thereby the mattress comfort level that is formed by this spring cluster 199 is high, user use experience has been improved.

In some embodiments, the springs 2 of the first outermost string 11 are the same stiffness as the springs 2 of the second outermost string 12. In other words, the spring 2 of the string section of the spring string 100 located at both sides of the middle string section 13 has the same stiffness, and the spring 2 of the string section at both sides has a stiffness different from that of the middle string section 13.

In some embodiments, the cloth bags 1 of the first outermost string 11 are of a different colour to the cloth bags 1 of the intermediate string 3, and the cloth bags 1 of the second outermost string 12 are of a different colour to the cloth bags 1 of the intermediate string 13. In other words, the color of the cloth bags 1 of the string sections of the spring string 100 located on both sides of the middle string section 13 is different from the color of the cloth bags 1 of the middle string section 13.

In some specific embodiments, the color of the cloth bags 1 of the first outermost string 11 is the same as the color of the cloth bags 1 of the second outermost string 12.

Optionally, the color of the cloth bags 1 of the first outermost string section 11 and the color of the cloth bags 11 of the second outermost string section 12 are blue or red, and the color of the cloth bag 1 of the middle string section 13 is white.

In some embodiments, at least one of the effective turns of the springs 2 of the first and second outermost string sections 11 and 12 and the springs 2 of the middle string section 13, the pitch diameter of the springs, the stiffness of the wire, and the diameter of the wire are different from each other.

In some embodiments, the number of springs 2 of the first outermost string 11 is the same as the number of springs 2 of the second outermost string 12 and is less than the number of springs 2 of the middle string 13.

Specifically, there is at least one spring 2 in the first outer string section 11, at least one spring 2 in the second outer string section 12, and a plurality of springs 2 in the middle string section 13. For example, as shown in fig. 1 and 2, the springs 2 of the first outermost string 11 and the springs 2 of the second outermost string 12 are both two, and the number of the springs 2 of the middle string 13 is more than two.

In some embodiments, the cloth bags 1 of the intermediate string section 13 are integral bags. The utility model is not limited to this, for example, the middle string section 13 can be formed by connecting a plurality of cloth bags 1. In other words, the middle string section 1 may be a single string section, or may be formed by connecting a plurality of string sections.

In some embodiments, the stiffness of the springs 2 of the first outermost string 11 is greater than the stiffness of the springs 2 of the middle string 13, and the stiffness of the springs 2 of the second outermost string 12 is greater than the stiffness of the springs 2 of the middle string 13. In other words, the stiffness of the springs 2 in the middle portion of the spring string 100 is less than the stiffness of the springs 2 on both sides of the spring string 100, so that the middle portion of the spring string 100 is relatively soft and the two sides of the spring string 100 are relatively stiff.

Specifically, the stiffness of the springs 2 of the first outermost string section 11 is the same as that of the springs 2 of the second outermost string section 12, and the stiffness of the springs 2 of the first outermost string section 11 and the second outermost string section 12 is greater than that of the springs 2 of the middle string section 13.

In some embodiments, the plurality of spring strings 210 in the spring core 200 includes a plurality of first spring strings 211 and a plurality of second spring strings 212. The plurality of second spring strings 212 are arranged in the lateral direction, a portion of the first spring strings 211 is disposed at a first side of the plurality of second spring strings 212 in the lateral direction, and the remaining first spring strings 211 are disposed at a second side of the plurality of second spring strings 212 in the lateral direction.

The second spring string 212 is a spring string 100 according to an embodiment of the present invention. In other words, the second spring string 212 includes the first outermost string section 11, the second outermost string section 12, and the middle string section 13.

Wherein the stiffness of the springs 2 of the first spring string 211 is the same as the stiffness of the springs 2 of the first and second outermost string sections 11, 12 in the second spring string 212. In other words, the stiffness of the springs 2 of the first and second outermost string sections 11 and 12 in the second spring string 212 is the same, and the same as the stiffness of the springs 2 of the first spring string 211.

The color of the cloth bag 1 of the first spring string 211 is the same as the color of the cloth bags of the first outermost string section 11 and the second outermost string section 12 in the second spring string 212. In other words, the cloth bags of the first and second outermost string sections 11 and 12 in the second spring string 212 are the same color, and the same color as the cloth bag 1 of the first spring string 211.

In some embodiments, the stiffness of the spring 2 in at least one of the regions of the spring core 200 is greater than the stiffness of the spring 2 in the remaining regions.

A spring core in accordance with an embodiment of the present invention is described below with reference to fig. 1-4.

As shown in fig. 1-4, the spring core 200 of the present invention includes a plurality of spring strings 210, and each spring string 210 includes a plurality of spring strings 210 arranged in a transverse arrangement. Each spring string 210 extends in a longitudinal direction and comprises a cloth bag 1 and a plurality of springs 2, the springs 2 being wound from a metal wire in a spiral shape. The plurality of spring strings 210 includes a plurality of first spring strings 211 and a plurality of second spring strings 212. The plurality of second spring strings 212 are arranged in the lateral direction, a part of the plurality of first spring strings 211 is disposed at a first side of the plurality of second spring strings 212 in the lateral direction, and the remaining first spring strings 211 of the plurality of first spring strings 211 are disposed at a second side of the plurality of second spring strings 212 in the lateral direction. As shown in fig. 4, the number of the first spring strings 211 is four, two first spring strings 211 are laterally disposed on a first side of the plurality of second spring strings 212, and the remaining two first spring strings 211 are laterally disposed on a second side of the plurality of second spring strings 212, that is, the two first spring strings 211, the plurality of second spring strings 212, and the remaining two first spring strings 211 are sequentially arranged in the lateral direction.

The second spring string 212 includes a first outermost string section 11, a second outermost string section 12, and an intermediate string section 13 connected between the first outermost string section 11 and the second outermost string section 12. The cloth bags 1 of the first outermost string section 11 and the cloth bags 1 of the middle string section 13 are welded or bonded with each other to connect the first outermost string section 11 and the middle string section 13, and the cloth bags 1 of the second outermost string section 12 and the cloth bags 1 of the middle string section 13 are welded or bonded with each other to connect the second outermost string section 12 and the middle string section 13. The springs 2 of the first outermost string section 11 of the second spring string 212 have the same stiffness as the springs 2 of the second outermost string section 12, and have the same stiffness as the springs 2 of the first spring string 211. The stiffness of the springs 2 of the first outermost string 11 and the stiffness of the springs 2 of the second outermost string 12 are greater than the stiffness of the springs 2 of the middle string 13. The colors of the cloth bags 1 of the first outermost string section 11 and the second outermost string section 12 are blue or red, the cloth bags 1 of the first spring string 211 are the same in color, and the cloth bags 1 of the middle string section 13 are white in color.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature. Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (16)

1. A spring string is characterized by comprising a plurality of string sections which are sequentially connected along the longitudinal direction, each string section comprises a cloth bag and at least one spring, the springs are coiled into a spiral shape by metal wires, the cloth bag is provided with at least one bag chamber, the at least one spring is respectively and correspondingly arranged in the at least one bag chamber, the plurality of string sections comprise a first outermost string section, a second outermost string section and a middle string section connected between the first outermost string section and the second outermost string section, the springs of the first outermost string section and the springs of the middle string section have different rigidities, the springs of the second outermost string section and the springs of the middle string section have different rigidities, the cloth bags of the first outermost string section and the cloth bags of the middle string section are welded or bonded with each other, and the cloth bags of the second outermost string section and the cloth bags of the middle string section are welded or bonded with each other.

2. The spring string of claim 1 wherein the springs of the first outermost string section are the same stiffness as the springs of the second outermost string section.

3. The spring string according to claim 2, wherein the cloth bags of the first outermost string section are of a different color than the cloth bags of the intermediate string section, and the cloth bags of the second outermost string section are of a different color than the cloth bags of the intermediate string section.

4. The spring string according to claim 1, wherein the cloth bags of the first outermost string section are of a different color than the cloth bags of the intermediate string section, and the cloth bags of the second outermost string section are of a different color than the cloth bags of the intermediate string section.

5. The spring string of claim 4, wherein the cloth bags of the first outermost string section are the same color as the cloth bags of the second outermost string section.

6. The spring string according to claim 5, wherein the cloth bags of the first outermost string section and the cloth bags of the second outermost string section are blue or red in color, and the cloth bags of the middle string section are white in color.

7. The spring string according to any one of claims 1-6, wherein at least one of the effective number of turns of the springs of the first and second outermost string sections and the springs of the intermediate string section, the pitch diameter of the springs, the stiffness of the wire, and the diameter of the wire are different from each other.

8. The spring string according to any one of claims 1 to 6, wherein the number of springs of the first outermost string section is the same as the number of springs of the second outermost string section and is smaller than the number of springs of the intermediate string section.

9. The spring string according to any one of claims 1 to 6, wherein the cloth bags of the intermediate string section are integral bags.

10. The spring string according to any one of claims 1-6, wherein the stiffness of the springs of the first outermost string section is greater than the stiffness of the springs of the middle string section, and the stiffness of the springs of the second outermost string section is greater than the stiffness of the springs of the middle string section.

11. A spring core body is characterized by comprising a plurality of spring strings, wherein the spring strings are arranged in a transverse direction, each spring string extends in a longitudinal direction and comprises a cloth bag and a plurality of springs, the springs are wound into a spiral shape by metal wires, the cloth bag is provided with a plurality of mutually independent bag chambers arranged in the longitudinal direction, the springs are arranged in the bag chambers respectively, the spring core body is divided into a plurality of areas, the rigidity of the springs in at least one area is different from that of the springs in the rest areas, and the color of the cloth bag in at least one area is different from that of the cloth bags in the rest areas.

12. The spring core of claim 11 wherein said at least one region is two or more, said springs in said at least one region being of the same stiffness, said pockets in said at least one region being of the same color, said springs in said remaining regions being of the same stiffness, said pockets in said remaining regions being of the same color.

13. The spring core of claim 11 wherein said spring core comprises a middle region and a peripheral region, said peripheral region surrounding said middle region, said springs in said middle region having a different stiffness than said springs in said peripheral region, and said middle region having a cloth bag of a different color than said peripheral region.

14. The spring core of claim 11 wherein at least a portion of the plurality of spring strings are spring strings according to any one of claims 1-10.

15. The spring core of claim 14 wherein said plurality of spring strings comprises a plurality of first spring strings and a plurality of second spring strings, said plurality of second spring strings being arranged in a lateral direction, a portion of said first spring strings being disposed laterally on a first side of said plurality of second spring strings, the remaining first spring strings being disposed laterally on a second side of said plurality of second spring strings, said second spring strings being spring strings according to any of claims 1-10, said springs of said first spring strings having a stiffness equal to a stiffness of springs of first and second outermost string segments of said second spring strings, said pockets of said first spring strings having a color equal to a color of pockets of first and second outermost string segments of said second spring strings.

16. A spring core according to any of claims 11-15, wherein the stiffness of the spring in the at least one region is greater than the stiffness of the spring in the remaining regions.

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