CN211795476U - Spring and spring core - Google Patents

Abstract

The utility model discloses a spring and spring core, the spring core includes a plurality of springs, it is a plurality of the multirow and multiseriate are arranged into to the spring, every spring has the terminal surface circle, the terminal surface circle has first limit and second limit, first limit and second limit are relative on the radial direction of spring, first limit includes along the outside convex at least one first protruding section of radial direction, the second limit includes along the outside convex at least one second protruding section of radial direction, wherein link to each other through the string spring between the first limit of one line spring and the second limit of another line spring in two adjacent lines of springs, two adjacent springs in each row of spring, the first protruding section of one spring is towards another spring protrusion and supports the internal surface that leans on the spring coil of string spring, the second protruding section of another spring is towards a spring protrusion and supports the internal surface that leans on the spring coil of string spring. The utility model discloses a spring core is difficult for rocking, has improved spring core stability, reliability and travelling comfort.

Description

Spring and spring core

Technical Field

The utility model relates to a technical field is made to the spring, more specifically relates to a spring and have spring core of this spring for mattress or sofa.

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 and columns, the springs of adjacent columns being connected by strings of springs.

However, in the related art, the spring core is easily shaken, affecting the stability of the spring core. Moreover, after a user uses a bed core or a sofa core produced by the spring core, the user sleeps on the bed core or sits on the sofa core, the spring core is pressed, and the bed core or the sofa core is easy to shake or tilt, which affects the stability, reliability and comfort of the mattress and the sofa.

SUMMERY OF THE UTILITY MODEL

The present application is based on the discovery and recognition by the inventors of the following facts and problems:

in the elasticity core, because the shape of spring, after adjacent row spring is strung up through the cluster spring, there is the space easily between the adjacent row spring, and the spring rocks easily, leads to the spring core to rock easily, influences the stability of spring core, produces into spring bed core or sofa core after, influences stability, reliability and the travelling comfort of bed core and sofa core.

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. Therefore, the utility model provides an aspect provides a spring core, and this spring core is difficult for rocking, has improved spring core stability, reliability and travelling comfort.

Another aspect of the present invention further provides a spring.

The spring core according to an embodiment of the first aspect of the present invention comprises a plurality of springs, a plurality of the springs are arranged in a plurality of rows and a plurality of columns, the rows extend in a longitudinal direction and the columns extend in a transverse direction, each of the springs has an end face coil, the end face coil has a first edge and a second edge, the first edge and the second edge are opposite in a radial direction of the springs, the first edge comprises at least one first protruding section protruding outward in the radial direction, the second edge comprises at least one second protruding section protruding outward in the radial direction, wherein the first edge of one of the two adjacent rows of springs is connected to the second edge of the other row of springs by a string spring, the two adjacent springs in each row of springs have their first protruding sections protruding toward the other spring and abutting against an inner surface of a spring ring of the string spring, and the second protruding section of the other spring protrudes toward the one spring and abuts against a spring ring of the string spring Of the inner surface of (a).

According to the utility model discloses the spring core body, two limits through the relative arrangement of the terminal surface circle of spring set up protruding section, wherein in two adjacent springs that link to each other through the cluster spring, the protruding section on one limit of a spring just supports the internal surface that leans on the spring coil of cluster spring towards another spring protrusion, the protruding section on another limit of this another spring just supports the internal surface that leans on the spring coil of cluster spring towards above-mentioned spring protrusion, so that adjacent spring coupling is reliably difficult for rocking, thereby the spring core body is difficult for rocking, spring core body stability has been improved, reliability and travelling comfort.

In some embodiments, the first projecting section of the one of the two adjacent rows of springs and the second projecting section of the other of the two adjacent rows of springs are opposite to each other in the transverse direction.

In some embodiments, the first projecting section and the second projecting section of the spring are opposed to each other in the lateral direction.

In some embodiments, the first edge further comprises a first segment and a second segment, the first projecting segment is connected between the first segment and the second segment, the second edge further comprises a third segment and a fourth segment, the second projecting segment is connected between the third segment and the fourth segment, the third segment is opposite to the first segment in the longitudinal direction, and the fourth segment is opposite to the second segment in the transverse direction.

In some embodiments, the first convex segment and the first convex segment and the second segment are in arc transition, and the second convex segment and the third segment and the second convex segment and the fourth segment are in arc transition.

In some embodiments, the first and second projecting segments are generally arcuate or V-shaped or U-shaped.

In some embodiments, the end face ring is generally rectangular.

In some embodiments, the end turns of the spring include a first end turn and a second end turn, the first end turn and the second end turn each having the first side and the second side, the first side of the first end turn and the first side of the second end turn being on the same side of the spring, the second side of the first end turn and the second side of the second end turn being on the same side of the spring.

In some embodiments, the projections of the first convex section of the first end face coil and the first convex section of the second end face coil of the spring on the cross section of the spring coincide, and the projections of the second convex section of the first end face coil and the second convex section of the second end face coil of the spring on the cross section of the spring coincide.

In some embodiments, the first edge of the first end coil of one of the adjacent rows of springs is connected to the second edge of the first end coil of the other row of springs by a first string of springs, and the first edge of the second end coil of one of the adjacent rows of springs is connected to the second edge of the second end coil of the other row of springs by a second string of springs.

In some embodiments, the spring is an open spring with an open end face coil or a knotted spring with a closed end face coil.

According to the utility model discloses the spring of the embodiment of second aspect, the spring has the terminal surface circle, the terminal surface circle has first limit and second limit, first limit with the second limit is in the radial direction of spring is relative, first limit includes the edge radial direction is outside convex at least one first protruding section, the second limit includes the edge radial direction is outside convex at least one second protruding section.

According to the utility model discloses the spring sets up the bulge section through two limits of the mutual disposition at its terminal surface circle, and every bulge section all follows the radial outside protrusion of spring, can be in the spring core body including a plurality of these springs for the connection of two adjacent springs is reliable, thereby the spring core body is difficult for rocking, has improved spring core body stability, reliability and travelling comfort.

In some embodiments, the first projecting section and the second projecting section are opposite to each other in the radial direction.

In some embodiments, the first edge further comprises a first segment and a second segment, the first projecting segment is connected between the first segment and the second segment, the second edge further comprises a third segment and a fourth segment, the second projecting segment is connected between the third segment and the fourth segment, the third segment is opposite to the first segment in the radial direction, and the fourth segment is opposite to the second segment in the radial direction.

In some embodiments, the first convex segment and the first convex segment and the second segment are in arc transition, and the second convex segment and the third segment and the second convex segment and the fourth segment are in arc transition.

In some embodiments, the first and second projecting segments are generally arcuate or V-shaped or U-shaped.

In some embodiments, the end face ring is generally rectangular.

In some embodiments, the spring is an open spring with an open end face coil or a knotted spring with an end face coil closed.

Drawings

Fig. 1 is an overall schematic view of a spring core according to the present invention.

Fig. 2 is a schematic view of a spring according to an embodiment of the invention.

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

Fig. 4 is a top view of a spring core according to the present invention.

Fig. 5 is a partially enlarged schematic view of fig. 4.

Reference numerals:

the spring comprises a spring core body 100, a spring 1, an end face coil 11, a first edge 111, a first protruding section 1111, a first section 1112, a second section 1113, a second edge 112, a second protruding section 1121, a third section 1122, a fourth section 1123, a third edge 113, a fourth edge 114 and a string 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 according to an embodiment of the present invention will be described below with reference to fig. 1 to 5.

As shown in fig. 1 and 4, a spring core 100 according to an embodiment of the present invention includes a plurality of springs arranged in a plurality of rows and a plurality of columns, wherein the rows extend in a longitudinal direction and the columns extend in a transverse direction. In other words, the plurality of springs in the same row are arranged at intervals in the longitudinal direction, and as shown in fig. 1 and 4, the plurality of springs in the same row are arranged at intervals in the left-right direction. The plurality of springs in the same column are arranged at intervals in the lateral direction, and as shown in fig. 1 and 4, the plurality of springs in the same column are arranged at intervals in the up-down direction.

Wherein the spring in the pocket spring core 100 may be a spring according to an embodiment of the present invention.

A spring according to an embodiment of the present invention is described below with reference to fig. 2 and 3.

According to the utility model discloses spring 1 has end face circle 11, and end face circle 11 has first limit 111 and second limit 112, and first limit 111 and second limit 112 are arranged relatively in the radial direction of spring 1, and first limit 111 includes along the outside convex at least one first protruding section 1111 of radial direction of spring 1, and second limit 112 includes along the outside convex at least one second protruding section 1121 of radial direction of spring 1. Here, taking the end face coil 11 of the spring 1 as an example, the position toward the center of the end face coil 11 is inward, and the position away from the center of the end face coil 11 is outward.

As shown in fig. 2 and 3, the end ring 11 of the spring 1 has a first side 111 and a second side 112 which are opposite and spaced apart, wherein the first side 111 of the end ring 11 includes a first protruding section 1111, and the first protruding section 1111 may be one or more, and the first protruding section 1111 protrudes away from the second side 112 of the end ring 11. The second edge 112 of the end ring 11 includes one or more second protruding sections 1121, and the second protruding sections 1121 protrude away from the first edge 111 of the end ring 11. Wherein the first side 111 and the second side 112 of the end face loop 11 are arranged opposite and spaced apart in the transverse direction (up-down direction in the figure), in particular the first side 111 of the end face loop 11 is located below the second side 112, in other words the first side 111 of the end face loop 11 is below and the second side 112 is above.

Specifically, every spring in the spring core 100 is the spring 1 according to the embodiment of the present invention, and the first side 111 of one row of spring 1 in two adjacent rows of springs 1 is connected with the second side 112 of another row of spring 1 through the string spring 2, two adjacent springs 1 in each row of springs 1, the first protruding section 1111 of one spring 1 protrudes toward another spring 1 and abuts against the inner surface of the spring ring of the string spring 2, and the second protruding section 1121 of another spring 1 protrudes toward one spring 1 and abuts against the inner surface of the spring ring of the string spring 2. In other words, in the cross section of the spring core, at least part of the first projecting section 1111 of one row of springs 1 is located in the end coils 11 of the other row of springs 1, at least part of the second projecting section 1121 of the other row of springs is located in the end coils 11 of the one row of springs, and at least part of the first projecting section 1111 of the one row of springs 1 and at least part of the second projecting section 1121 of the other row of springs abut against the inner surfaces of the coils of the string spring 2, respectively.

As shown in fig. 4 and 5, a plurality of springs 1 arranged at intervals in the longitudinal direction (left-right direction in the drawing) are in a row, and a plurality of springs 1 arranged at intervals in the lateral direction are in a column. The three rows of springs 1 shown in fig. 4 are, from top to bottom, a first row of springs 1, a second row of springs 1 and a third row of springs 1 in sequence, for example, the first row of springs 1 and the second row of springs 1 in two adjacent rows of springs 1, a first side 111 of the first row of springs 1 and a second side 112 of the second row of springs 1 are connected by a serial spring 2, and for example, the second row of springs 1 and the third row of springs 1, the first side 111 of the second row of springs 1 and the second side 112 of the third row of springs 1 are connected by a serial spring 2.

The four rows of springs 1 shown in fig. 4 are a first row of springs 1, a second row of springs 1, a third row of springs 1 and a fourth row of springs 1 from left to right in sequence, and each row of springs includes three springs 1, and each row of springs includes a first spring 1, a second spring 1 and a third spring 1 from top to bottom in sequence. In the adjacent springs 1 in each row of springs 1, such as the first spring 1 and the second spring 1 in the first row of springs 1, the first protruding section 1111 of the first edge 111 of the first spring 1 protrudes downward and abuts against the inner surface of the lower side of the coil ring of the string spring 2, and the second protruding section 1121 of the second edge 112 of the second spring 1 protrudes upward and abuts against the inner surface of the upper side of the string spring 2, so that the first edge 111 of the first spring 1 and the second edge 112 of the second spring 1 are strung together, and the first protruding section 1111 of the first spring 1 and the second protruding section 1121 of the second spring 1 abut against the inner surface of the coil ring respectively, so that the first spring 1 and the second spring 1 are connected more reliably and are not easy to shake.

Similarly, in the second spring 1 and the third spring 1, the first protruding section 1111 of the first side 111 of the second spring 1 protrudes downward and abuts against the inner surface of the lower side of the turns of the string spring 2, and the second protruding section 1121 of the second side 112 of the third spring 1 protrudes upward and abuts against the inner surface of the upper side of the turns of the string spring 2, thereby stringing the first side 111 of the second spring 1 and the second side 112 of the third spring 1 together.

According to the utility model discloses spring core 100, two limits through the relative arrangement of spring 1's terminal surface circle 11 set up the bulge section, wherein in two adjacent springs 1 that link to each other through string spring 2, the bulge section on one limit of one spring 1 is towards another spring 1 protrusion and support and lean on the internal surface of propping against string spring 2's spring coil, the bulge section on another limit of this another spring 1 is towards above-mentioned one spring 1 protrusion and support and lean on the internal surface of propping against string spring 2's spring coil, so that adjacent spring 1 connects reliably difficult rocking, thereby spring core 100 is difficult for rocking, spring core 100 stability has been improved, reliability and travelling comfort.

In some embodiments, first protruding section 1111 of one row of springs 1 in two adjacent rows of springs 1 and second protruding section 1121 of the other row of springs 1 are laterally opposite to each other. As shown in fig. 4, first protruding section 1111 of first row spring 1 and second protruding section 1121 of second row spring 1 are opposite to each other in the up-down direction, wherein first protruding section 1111 of first row spring 1 protrudes downward and second protruding section 1121 of second row spring 1 protrudes upward.

Wherein for spring 1, in some embodiments, first projecting segment 1111 and second projecting segment 1121 of spring 1 are laterally opposite to each other. In other words, first projecting section 1111 and second projecting section 1121 of spring 1 are opposed to each other in the radial direction of spring 1. As shown in fig. 2 and 3, first protruding section 1111 protrudes downward, second protruding section 1121 protrudes upward, and first protruding section 1111 is located right below second protruding section 1121, that is, first protruding section 1111 is opposite to and spaced apart from second protruding section 1121 in the up-down direction, and first protruding section 1111 is located downward, and second protruding section 1121 is located upward.

In some embodiments, the first edge 111 further includes a first segment 1112 and a second segment 1113, the first protruding segment 1111 is connected between the first segment 1112 and the second segment 1113, the second edge 112 further includes a third segment 1122 and a fourth segment 1123, the second protruding segment 1121 is connected between the third segment 1122 and the fourth segment 1123, the third segment 1122 is laterally opposite the first segment 1112, and the fourth segment 1123 is laterally opposite the second segment 1113.

As shown in fig. 2 and 3, the first edge 111 further includes a first segment 1112 and a second segment 1113, one end of the first protruding segment 1111 is connected to the first segment 1112, and the other end of the first protruding segment 1111 is connected to the second segment 1113, that is, the first segment 1112 and the third segment 1113 are connected by the first protruding segment 1111. The second side 112 further includes a third segment 1122 and a fourth segment 1123, one end of the second protruding segment 1121 is connected to the third segment 1122, and the other end of the second protruding segment 1121 is connected to the fourth segment 1123, i.e., the third segment 1122 and the fourth segment 1123 are connected through the second protruding segment 1121.

Specifically, the first segment 1112 of the first side 111 is vertically opposite and spaced apart from the third segment 1122 of the second side 112, and the second segment 1113 of the first side 111 is vertically opposite and spaced apart from the fourth segment 1123 of the second side 112.

The first segment 1112 of the first side 111 may be a straight segment or an arc segment recessed inward in the radial direction of the spring 1, i.e. an arc segment recessed upward as shown in fig. 2 and 3. The second segment 1113 of the first edge 111 may be a straight segment or an arc segment that is concave inward in the radial direction of the spring 1, i.e., an arc segment that is concave upward as shown in fig. 2 and 3.

The third segment 1122 of the second side 112 may be a straight segment or an arc segment recessed inward in the radial direction of the spring 1, i.e., a downward-recessed arc segment as shown in fig. 2 and 3. The fourth segment 1123 of the second edge 112 may be a straight segment or an arc segment recessed inward in the radial direction of the spring 1, i.e., a downward-recessed arc segment shown in fig. 2 and 3.

In some embodiments, an arc transition is formed between first bulge segment 1111 and first segment 1112, between first bulge segment 1111 and second segment 1113, between second bulge segment 1121 and third segment 1122, and between second bulge segment 1121 and fourth segment 1123. As shown in FIGS. 2 and 3, first lobe segment 1111 and first segment 1112 of first side 111 are connected by an arcuate transition, and first lobe segment 1111 and second segment 1113 are connected by an arcuate transition. The second protruding portion 1121 of the second edge 113 is connected to the third portion 1122 in an arc transition manner, and the second protruding portion 1121 is connected to the fourth portion 1123 in an arc transition manner.

In some particular embodiments, first projection segment 1111 and second projection segment 1121 are generally arc-shaped or V-shaped or U-shaped. As shown in FIGS. 2 and 3, first projecting segment 1111 and second projecting segment 1121 are each generally arc-shaped.

In some particular embodiments, the end ring 11 is generally rectangular. In other words, the end face ring 11 is substantially rectangular in shape as viewed in plan from the spring 1. Here, it should be noted that the "substantially rectangular" does not limit adjacent sides to be connected, and does not limit each side to be a straight side, but merely means that the shape of the end face ring 11 is approximately rectangular.

Specifically, as shown in fig. 3, the end face ring 11 further includes a third side 113 and a fourth side 114, wherein the third side 113 is connected between one end of the first side 111 and one end of the second side 112, and the fourth side 114 is connected to the other end of the second side 112.

Where fourth side 114 is shorter than third side 113, fourth side 114 may be connected to an active loop adjacent to end loop 11 to close end loop 11 to form a knotted spring, and fourth side 114 may also be suspended to open end loop 11 to form an open spring.

In other words, the spring 1 of the embodiment of the present invention can be a knotting spring, and can also be an open spring.

In some embodiments, the end turn 11 of the spring 1 comprises a first end turn and a second end turn, each having a first side 111 and a second side 112, the first side 111 of the first end turn and the first side 111 of the second end turn being located on the same side of the spring 1, and the second side 112 of the first end turn and the second side 112 of the second end turn being located on the same side of the spring 1.

As shown in fig. 2 and 3, the spring 1 includes two end coils 11 opposite to each other in the height direction of the spring 1, each end coil 11 having the above-described first side 111 and second side 112, wherein the first sides 111 of the two end coils 11 are located on one side of the spring 1, and the second sides 111 of the two end coils 11 are located on the other side of the spring 1.

In some specific embodiments, the projections of the first protruding section 1111 of the first end turn and the first protruding section 1111 of the second end turn of the spring 1 on the cross section of the spring 1 coincide, and the projections of the second protruding section 1121 of the first end turn and the second protruding section 1121 of the second end turn of the spring 1 on the cross section of the spring 1 coincide.

In other words, the first projecting sections 1111 of the two end coils 11 of the spring 1 are oppositely arranged in the height direction of the spring 1, and the first projecting sections 1111 of the two end coils 11 are the same in shape and size. The second protruding sections 1121 of the two end face coils 11 of the spring 1 are arranged oppositely in the height direction of the spring 1, and the second protruding sections 1121 of the two end face coils 11 are identical in shape and size.

It is to be understood that the present application is not limited thereto, and the first protruding sections 1111 of the two end coils 11 for the spring 1, for example, may not be arranged opposite to each other in the height direction of the spring 1. For example, the first protruding sections 1111 of the two end rings 11 are different in shape and size. In other words, the first protruding sections 1111 of the two end coils 11 of the spring 1 may be the same or different.

For example, the second protruding sections 1121 of the two end turns 11 of the spring 1 are not arranged opposite to each other in the height direction of the spring 1, and for example, the second protruding sections 1121 of the two end turns 11 are different in shape and size. In other words, the second protruding portions 1121 of the two end coils 11 of the spring 1 may be the same or different.

In some embodiments, the first edge 111 of the first end coil of one of the adjacent rows of springs 1 is connected to the second edge 112 of the first end coil of the other row of springs 1 through the first string of springs 2, and the first edge 111 of the second end coil of one of the adjacent rows of springs 1 is connected to the second edge 112 of the second end coil of the other row of springs 1 through the second string of springs 2.

A spring core in accordance with an embodiment of the present invention is described below with reference to fig. 1-5.

As shown in fig. 1 to 5, the spring core according to the embodiment of the present invention includes a plurality of springs 1, and the plurality of springs 1 are arranged in a plurality of rows arranged in the longitudinal direction and a plurality of columns arranged at intervals in the transverse direction. In other words, each row of springs 1 is arranged at intervals in the lateral direction, and each column of springs 1 is arranged in sequence in the longitudinal direction.

Each spring 1 comprises two end coils 11 arranged at intervals along the height of the spring 1, each end coil 11 having a first side 111 and a second side 112 opposite and spaced apart from each other in the transverse direction, the first side 111 comprising a first protruding section 1111, a first section 1112 and a second section 1113, the first protruding section 1111 protruding in a direction transversely away from the central position of the end coil 11, the first protruding section 1111 being substantially arc-shaped. First bulge segment 1111 is connected at one end to first segment 1112 at an arcuate transition and at the other end to second segment 1113 at an arcuate transition, i.e., first segment 1112 and third segment 1113 are connected by first bulge segment 1111.

The second edge 112 includes a second protruding section 1121, a third section 1122, and a fourth section 1123, the second protruding section 1121 protrudes in a direction laterally away from the central position of the end face ring 11, the second protruding section 1121 is substantially arc-shaped, and the second protruding section 1121 and the first protruding section 1111 of the end face ring 11 are arranged laterally opposite to each other. One end of the second protruding portion 1121 is connected to the third portion 1122 in an arc transition manner, and the other end of the second protruding portion 1121 is connected to the fourth portion 1123 in an arc transition manner, that is, the third portion 1122 and the fourth portion 1123 are connected through the second protruding portion 1121.

Specifically, the first segment 1112 of the first edge 111 is laterally opposite and spaced apart from the third segment 1122 of the second edge 112, and the second segment 1113 of the first edge 111 is laterally opposite and spaced apart from the fourth segment 1123 of the second edge 112.

The first projecting sections 1111 of the two end coils 11 of the spring 1 are oppositely arranged in the height direction of the spring 1, and the first projecting sections 1111 of the two end coils 11 are identical in shape and size. The second protruding sections 1121 of the two end face coils 11 of the spring 1 are arranged oppositely in the height direction of the spring 1, and the second protruding sections 1121 of the two end face coils 11 are identical in shape and size.

The end face ring 11 further comprises a third side 113 and a fourth side 114, wherein the third side 113 is connected between one end of the first side 111 and one end of the second side 112, and the fourth side 114 is connected to the other end of the second side 112.

Where fourth side 114 is shorter than third side 113, fourth side 114 may be connected to an active loop adjacent to end loop 11 to close end loop 11 to form a knotted spring, and fourth side 114 may also be suspended to open end loop 11 to form an open spring.

In the spring core 100, the first side 111 of one row of springs 1 in two adjacent rows of springs 1 is connected with the second side 112 of the other row of springs 1 through the string spring 2. Specifically, the first protruding section 1111 of the one row of springs 1 and the second protruding section 1121 of the other row of springs 1 are laterally opposite to each other. Specifically, the first side 111 of the one end coil 11 of the one row of springs 1 is connected to the second side 112 of the one end coil 11 of the other row of springs 1 through a first string of springs, and the first side 111 of the other end coil 11 of the one row of springs 1 is connected to the second side 112 of the other end coil 11 of the other row of springs 1 through a second string of springs.

For two adjacent springs 1 in each row of springs 1, the first protruding section 1111 of one spring 1 protrudes toward the other spring 1 and abuts against the inner surface of the coil of the string spring 2, and the second protruding section 1121 of the other spring 1 protrudes toward the one spring 1 and abuts against the inner surface of the coil of the string spring 2.

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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

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 (18)

1. A spring core comprising a plurality of springs arranged in a plurality of rows and columns, the rows extending in a longitudinal direction and the columns extending in a transverse direction, each of the springs having an end turn with a first side and a second side, the first side and the second side being opposite in a radial direction of the spring, the first side comprising at least one first projecting section projecting outwardly in the radial direction, the second side comprising at least one second projecting section projecting outwardly in the radial direction, wherein the first side of one of two adjacent rows of springs is connected to the second side of the other row of springs by a string spring, the first projecting section of one spring projecting toward the other spring and abutting against an inner surface of a turn of the string spring, and the second projecting section of the other spring projecting toward the one spring and abutting against an inner surface of a turn of the string spring.

2. The spring core of claim 1 wherein the first projecting segment of the one of the adjacent rows of springs and the second projecting segment of the other of the rows of springs are opposite one another in the transverse direction.

3. The spring core of claim 1 wherein the first and second projecting segments of the spring are opposite one another in the transverse direction.

4. The spring core of claim 1 wherein said first edge further comprises a first segment and a second segment, said first projecting segment being connected between said first segment and said second segment, said second edge further comprises a third segment and a fourth segment, said second projecting segment being connected between said third segment and said fourth segment, said third segment being opposite said first segment in said longitudinal direction, and said fourth segment being opposite said second segment in said transverse direction.

5. The spring core of claim 4 wherein the first convex segment transitions arcuately from the first segment and between the first convex segment and the second segment, and wherein the second convex segment transitions arcuately from the third segment and between the second convex segment and the fourth segment.

6. The spring core of claim 1 wherein the first and second projecting segments are generally arcuate or V-shaped or U-shaped.

7. The spring core of claim 1 wherein the end turns are generally rectangular.

8. The spring core of any one of claims 1-7 wherein the end turns of the spring comprise a first end turn and a second end turn, the first end turn and the second end turn each having the first side and the second side, the first side of the first end turn and the first side of the second end turn being on the same side of the spring, the second side of the first end turn and the second side of the second end turn being on the same side of the spring.

9. The spring core of claim 8 wherein the first convex segment of the first end turn and the first convex segment of the second end turn of the spring coincide in projection on the cross-section of the spring, and the second convex segment of the first end turn and the second convex segment of the second end turn of the spring coincide in projection on the cross-section of the spring.

10. The spring core of claim 8 wherein the first edge of the first end turn of one of the adjacent rows of springs is connected to the second edge of the first end turn of the other of the adjacent rows of springs by a first string of springs and the first edge of the second end turn of one of the adjacent rows of springs is connected to the second edge of the second end turn of the other of the adjacent rows of springs by a second string of springs.

11. A spring core according to any of claims 1-7, wherein the spring is an open spring with end turns open or a knotted spring with end turns closed.

12. A spring having an end turn with a first side and a second side, the first side and the second side being opposite in a radial direction of the spring, the first side including at least one first projecting section projecting outwardly in the radial direction, the second side including at least one second projecting section projecting outwardly in the radial direction.

13. The spring of claim 12, wherein the first projecting segment and the second projecting segment oppose each other in the radial direction.

14. The spring of claim 12, wherein the first side further includes a first segment and a second segment, the first protruding segment being connected between the first segment and the second segment, the second side further includes a third segment and a fourth segment, the second protruding segment being connected between the third segment and the fourth segment, the third segment being opposite the first segment in the radial direction, the fourth segment being opposite the second segment in the radial direction.

15. The spring of claim 14, wherein the first convex segment and the first convex segment and the second segment are in arcuate transitions, and wherein the second convex segment and the third segment and the second convex segment and the fourth segment are in arcuate transitions.

16. The spring of claim 12, wherein the first and second projecting segments are generally arcuate or V-shaped or U-shaped.

17. The spring of claim 12 wherein the end coils are generally rectangular.

18. A spring according to any one of claims 12-17, wherein the spring is an open spring with an open end turn or a knotted spring with a closed end turn.

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