Spring assembly with adjustable hardness and spring mattress

Abstract

The invention discloses a hardness-adjustable spring assembly which comprises a barrel and an inner barrel, a first groove is formed in the outer wall of the barrel, a second groove is formed in the inner barrel, the inner barrel is installed in the barrel in a sliding mode, the convex face of the first groove is attached to the concave face of the second groove, and the convex face of the first groove is attached to the concave face of the second groove. An adjusting spring is arranged in the inner cylinder; the spring assembly comprises a pressing adjusting mechanism and a pulling adjusting mechanism, the pressing adjusting mechanism compresses an adjusting spring by pressing a cover plate downwards, the hardness of a mattress is changed, meanwhile, the cover plate is rotated to drive an inserting block to be inserted into an inserting hole to fix the current hardness of the mattress, the pulling adjusting mechanism is connected with the spring through a fixing plate, and a pulling rope is pulled to adjust the hardness of the mattress. The end parts of the adjusting springs at the local raised parts of the mattress are shrunk, so that the surface of the mattress is kept flat, and therefore, the stretching height of the adjusting springs can be adjusted and controlled by pulling the adjusting mechanism, and the fine adjustment of the local height of the mattress is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of spring mattresses, and in particular to a spring assembly with adjustable softness and hardness and a spring mattress. Background Art

[0002] Modern lifestyles, such as long hours driving and working, often lead to discomfort in the lumbar and cervical spine. Over time, this can lead to kyphosis, lumbar disc herniation, and other conditions. During long-term mattress use, the height of the springs corresponding to the lumbar area must be regularly adjusted to ensure the mattress is positioned between flatness and convexity (allowing the springs corresponding to the lumbar area to convex). This allows the lumbar area to maintain its natural curvature and reverse spinal extension, preventing and correcting kyphosis while also correcting the damage to the spine caused by invisible collapse.

[0003] The design of traditional mattresses causes people to adjust their sleeping positions when falling asleep, forcing the body to adapt to a mattress whose hardness and softness do not match their weight, in order to obtain the comfort of the body's natural physiological curvature. When a person lies flat on their back, the weight and height are different, and the corresponding supporting elastic force required for the waist is also different. In addition, existing spring mattress structures generally have problems such as unadjustable support hardness and inability to precisely control local height, resulting in users being unable to make personalized adjustments based on body shape or comfort needs, and poor comfort and adaptability. At the same time, some structures with adjustment functions are complex in design, inconvenient to adjust, and lack a stable and effective limit and positioning mechanism, which can easily cause the mattress structure to loosen or fail to function. Therefore, there is an urgent need for a mattress spring assembly with a reasonable structure and flexible adjustment that can adjust the overall hardness and achieve local height control. Summary of the Invention

[0004] The object of the present invention is to provide a spring assembly and a spring mattress with adjustable softness and hardness to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a spring assembly with adjustable softness and hardness, comprising a cylinder and an inner cylinder: The outer wall of the cylinder is provided with a first groove, and the inner cylinder is provided with a second groove. The inner cylinder is slidably mounted inside the cylinder, and the convex surface of the first groove fits in contact with the concave surface of the second groove. An adjustment spring is provided inside the inner cylinder, and a movable plate is provided on the top of the inner cylinder. The inner cylinder is fixed to the cylinder through the movable plate. One end of the bottom of the adjustment spring is connected to a fixed plate, a pull rope is installed on the top of the fixed plate, through holes are provided at the center of the inner cylinder and the top of the movable plate, two through holes are provided at one end of the top of the pull rope, and a plurality of limit knots are arranged at equal distances on the outer wall of the pull rope; The cylinder, the inner cylinder, and the movable plate constitute a pressing adjustment mechanism for adjusting the protruding height of the adjustment spring in the mattress. The cylinder, the inner cylinder, the pull rope, and the fixed plate constitute a pulling adjustment mechanism for adjusting the softness or hardness of the adjustment spring in the mattress.

[0006] Preferably, the press adjustment mechanism also includes at least one slide groove provided on the top of the inner cylinder, an insert block is slidably installed inside the slide groove, and the top of the movable plate is provided with at least one guide groove and arc groove, and the guide groove and arc groove are both arranged in a circular array with the geometric center of the inner cylinder, and a protrusion block is provided on the top of the insert block, and the protrusion block is located inside the guide groove, and the outer wall of the cylinder body 1 is symmetrically provided with at least one group of equidistantly arranged sockets 8.

[0007] Preferably, at least one flat-headed rod is symmetrically fixedly connected to the top of the inner cylinder, one end of the top of the flat-headed rod passes through the arc-shaped groove on the top of the movable plate, and the outer diameter of the top end of the flat-headed rod is larger than the inner diameter of the arc-shaped groove.

[0008] Preferably, two rectangular grooves are symmetrically provided on the inner wall of the through hole on the movable plate.

[0009] Preferably, a C-shaped limit buckle is rotatably mounted on the top of the movable plate, and the inner diameter of the opening of the C-shaped limit buckle matches the outer diameter of the pull rope.

[0010] Preferably, at least one hanging ear is symmetrically fixedly connected to the outer wall of the cylinder.

[0011] Preferably, an extension tube is fixedly connected to the inner wall of the through hole on the movable plate, and the extension tube is used to pass through the movable plate and the through hole on the inner cylinder.

[0012] Preferably, the outer diameter of the movable plate and the movable plate are both smaller than the outer diameter of the inner cylinder.

[0013] Preferably, the length of the guide groove matches the length of the insert block.

[0014] The present invention also provides a spring mattress comprising any one of the above preferred spring assemblies.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the spring assembly provided by the present invention includes a pressing adjustment mechanism and a pulling adjustment mechanism. When the pressing adjustment mechanism and the pulling adjustment mechanism are in use, the adjustment spring is compressed by pressing down the movable plate and tightening the rope of the fixed plate. At the same time, the movable plate is rotated to drive the plug block to be inserted into the socket to fix the current mattress hardness and protrusion, thereby realizing fine adjustment of the local height of the mattress. Its overall structural design is reasonable, the adjustment is flexible, and it is convenient for personalized use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a spring assembly with adjustable hardness and softness according to an embodiment of the present invention; Figure 2 This is a schematic structural diagram of the adjustable hardness spring assembly from another perspective according to an embodiment of the present invention; Figure 3 This is a schematic structural diagram of the cylinder, inner cylinder and spring in the spring assembly with adjustable hardness and softness according to an embodiment of the present invention; Figure 4 This is a schematic structural diagram of an inner cylinder and a movable plate in a spring assembly with adjustable hardness and softness according to an embodiment of the present invention; Figure 5 An exploded view of the structure of a spring assembly with adjustable hardness and softness according to an embodiment of the present invention; Figure 6 For the embodiment of the present invention Figure 5 Schematic diagram of the enlarged structure of part A; Figure 7 Schematic diagram of the cross-sectional structure of the cylinder and inner cylinder in the spring assembly with adjustable hardness and softness according to an embodiment of the present invention; Figure 8 This is a schematic structural diagram of a spring mattress and an adjustable spring assembly according to an embodiment of the present invention.

[0017] In the figure: 1. Cylinder body; 3. Hanging ear; 4. Pull rope; 5. Rectangular groove; 6. Arc groove; 7. Flat-head rod; 8. Socket; 9. First groove; 10. C-shaped limit buckle; 11. Adjustment spring; 12. Fixed plate; 13. Inner cylinder; 14. Movable plate; 15. Guide groove; 16. Insert block; 17. Limit knot; 18. Second groove; 20. Extension tube; 21. Raised block; 22. Slide groove; 23. Through hole. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the embodiment of the present application, the front side of the spring mattress when laid flat is set as the bottom, and the reverse side is set as the top, that is, the cylinder 1 and the inner cylinder 13 of the spring assembly are set in the back side of the mattress.

[0020] See also Figure 1-Figure 5 An embodiment of the present invention provides a spring assembly and a spring mattress with adjustable softness and hardness, including: a cylinder 1 and an inner cylinder 13.

[0021] Among them, such as Figure 1 、 Figure 2 and Figure 5 As shown, the outer wall of the cylinder 1 is provided with a first groove 9, and the inner cylinder 13 is provided with a second groove 18. The inner cylinder 13 is slidably installed inside the cylinder 1, and the convex surface of the first groove 9 fits into the concave surface of the second groove 18. An adjusting spring 11 is provided inside the inner cylinder 13, and a movable plate 14 is provided on the top of the inner cylinder 13.

[0022] The first groove 9 on the outer wall of the cylinder 1 fits with the second groove 18 on the inner cylinder 13 to ensure the stability of the inner cylinder 13 when it moves up and down in the cylinder 1. An adjustment spring 11 is installed inside the inner cylinder 13 to provide elastic support and a soft and elastic feeling in the spring net bed.

[0023] like Figure 1-Figure 7 As shown, a pulling adjustment mechanism is installed on the adjusting spring 11, and the pulling adjustment mechanism includes a fixed plate 12, which is fixedly connected to the bottom end of the adjusting spring 11, and a pull rope 4 is installed on the top of the fixed plate 12. A through hole 23 is provided at the center of the top of the inner tube 13 and the movable plate 14. The top end of the pull rope 4 passes through two through holes 23 respectively, and the outer wall of the pull rope 4 is provided with a number of limit knots 17 arranged at equal distances.

[0024] According to an embodiment of the present application, when the adjustment mechanism is pulled to operate, the pull rope 4 is fixed to the bottom of the adjustment spring 11 through the fixing plate 12, and is connected to the fixing plate 12 and passes upward through the through hole 23. The outer wall of the pull rope 4 is provided with multiple limiting knots 17. By pulling the pull rope 4, one end of the adjustment spring 11 can be retracted upward.

[0025] like Figure 1-Figure 5 As shown, a press-adjusting mechanism is provided inside the cylinder 1, which includes three slide grooves 22 symmetrically opened on the top of the inner cylinder 13. An insert block 16 is slidably installed inside the slide groove 22. Three guide grooves 15 and three arc grooves 6 are symmetrically provided on the top of the movable plate 14. Three arc grooves 6 are symmetrically provided on the top of each movable plate 14. The guide grooves 15 and the arc grooves 6 are arranged in a ring array with the geometric center of the inner cylinder 13. A protrusion 21 is provided on the top of the insert block 16, and the protrusion 21 is located inside the guide groove 15. The outer wall of the cylinder 1 is symmetrically provided with at least one group of equally spaced jacks 8. According to the embodiment of the present application, when the adjustment mechanism is pressed, the movable plate 14 is rotated, thereby driving the plug block 16 to move along the slide groove 22 to the outside of the inner cylinder 13, so that the plug block 16 moves outward and is inserted into the inside of the socket 8, locking the current position of the inner cylinder 13. In addition, three flat-headed rods 7 are symmetrically fixedly connected to the top of the inner cylinder 13, and the top end of the flat-headed rod 7 passes through the arc groove 6 at the top of the movable plate 14, and the outer diameter of the top end of the flat-headed rod 7 is larger than the inner diameter of the arc groove 6. The three flat-headed rods 7 at the top of the inner cylinder 13 pass through the arc groove 6 to limit the rotation angle of the movable plate 14 and prevent the movable plate 14 from detaching from the top of the inner cylinder 13.

[0026] Reference Figure 6 In order to facilitate the rotation of the movable plate 14, two rectangular grooves 5 are symmetrically provided on the inner wall of the through hole 23 on the movable plate 14. The operator can use a hollow key with a shape matching the rectangular groove 5 to insert it into the through hole 23 and the rectangular groove 5 and rotate it counterclockwise or clockwise, so as to quickly rotate the movable plate 14 and move the insert block 16.

[0027] Specifically, an extension tube 20 is fixedly connected to the inner wall of the through hole 23 on the movable plate 14. The extension tube 20 is used to pass through the through hole 23 on the inner tube 13. The extension tube 20 can increase the stability of the nesting between the movable plate 14 and the inner tube 13 and reduce shaking.

[0028] Furthermore, a C-shaped limit buckle 10 is rotatably installed on the top of the movable plate 14. The inner diameter of the opening of the C-shaped limit buckle 10 matches the outer diameter of the pull rope 4. The C-shaped limit buckle 10 can allow the pull rope 4 to enter its opening by rotation, and use the limit knot 17 on the pull rope 4 to limit the position after soft and hard adjustment.

[0029] like Figure 1-Figure 3 As shown, the outer wall of the cylinder 1 is symmetrically fixedly connected to two hanging ears 3, and the outer ring of the spring in the conventional spring mattress can pass through the hanging ears 3, so that the spring assembly is installed in a part of the spring mattress.

[0030] It should be noted that the outer diameter of the movable plate 14 is smaller than the outer diameter of the inner cylinder 13 , so that the movable plate 14 is not affected by the first groove 9 when rotating on the inner cylinder 13 .

[0031] In this embodiment, the number of each group of holes 8 is not less than three, and the number of limiting knots 17 matches the number and arrangement spacing of a group of holes 8. After pressing the inner tube 13 to compress the adjustment spring 11, the position of the hole 8 where the insert block 16 is inserted represents the compression degree gear of the adjustment spring 11. When the compression degree gear of the adjustment spring 11 is determined, the drawstring 4 is stretched by comparing the number and spacing of the holes 8 under this gear, so that the number and spacing of the limiting knots 17 match the number and spacing of the holes 8, so that the protruding part of the mattress is lowered and leveled. At this time, the C-shaped limiting buckle 10 is buckled into the drawstring 4 to resist the limiting knot 17, completing the fixation after leveling.

[0032] Reference Figure 8 The present invention also provides a spring mattress, which includes the spring assembly in any of the above embodiments.

[0033] In summary, the spring assembly provided by the present invention includes a cylinder 1 and an inner cylinder 13 slidably installed inside the cylinder 1. The first groove 9 on the outer wall of the cylinder 1 fits together with the second groove 18 on the inner cylinder 13 to ensure the stability of the inner cylinder 13 when it moves up and down in the cylinder 1. An adjustment spring 11 is installed inside the inner cylinder 13 to provide elastic support and a soft and elastic feel in the spring net bed. A movable plate 14 is provided on the top of the inner cylinder 13, and a through hole 23 is provided in the center of the top of the three to facilitate the passage of the pull rope 4.

[0034] The principle of leveling the spring mattress is as follows: when the spring mattress is partially uneven, the spring assembly at that location is adjusted, and the adjustment spring 11 is raised by pressing the movable plate 14 and the inner cylinder 13 to raise the height of the uneven part of the spring mattress. After the spring mattress is leveled as a whole, the movable plate 14 is rotated to lock the insert 16 with the socket 8, thereby locking the current position of the inner cylinder 13 and completing the mattress leveling operation. The principle of adjusting the spring mattress firmness is as follows: by pressing the movable plate 14 and the inner tube 13, the spring 11 is raised to the appropriate protrusion height in the spring mattress, and the movable plate 14 is rotated to lock the insert 16 with the socket 8. At this time, the pull cord 4 is pulled to retract one end of the spring 11 until it is flush with the spring mattress surface, thereby changing the firmness of the spring assembly at the spring mattress installation site. The principle of adjusting the convexity of the spring mattress is as follows: by pressing the movable plate 14 and the inner tube 13, the spring 11 is raised and adjusted so that it bulges in the spring mattress, and the movable plate 14 is rotated to lock the insert block 16 with the socket 8, thereby adjusting the bulge height of the spring assembly at the spring mattress installation site. At the same time, combined with the pulling of the pull cord 4, the height of the spring 11 is fine-tuned to determine the hardness of the bulge.

[0035] The spring assembly provided in this embodiment can adjust the flatness, hardness and convexity of the mattress, thereby achieving fine adjustment of the local height of the mattress. Its overall structural design is reasonable, the adjustment is flexible, and it is convenient for personalized use.

[0036] Parts not described in the present invention are the same as those in the prior art or can be implemented using the prior art. Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spring assembly with adjustable hardness, characterized in that: It comprises a cylinder (1) and an inner cylinder (13), The outer wall of the cylinder (1) is provided with a first groove (9), and the inner cylinder (13) is provided with a second groove (18). The inner cylinder (13) is slidably mounted inside the cylinder (1), and the convex surface of the first groove (9) fits the concave surface of the second groove (18). An adjusting spring (11) is provided inside the inner cylinder (13), and a movable plate (14) is provided on the top of the inner cylinder (13). The inner cylinder (13) is fixed to the cylinder (1) through the movable plate (14). One end of the bottom of the regulating spring (11) is connected to a fixed plate (12), a pull rope (4) is installed on the top of the fixed plate (12), a through hole (23) is provided at the center of the top of the inner cylinder (13) and the movable plate (14), two through holes (23) are provided at one end of the top of the pull rope (4), and a plurality of limit knots (17) arranged at equal intervals are provided on the outer wall of the pull rope (4); The cylinder (1), the inner cylinder (13), and the movable plate (14) constitute a pressing adjustment mechanism for adjusting the protruding height of the adjustment spring (11) in the mattress, and the cylinder (1), the inner cylinder (13), the pull rope (4), and the fixed plate (12) constitute a pulling adjustment mechanism for adjusting the softness or hardness of the adjustment spring (11) in the mattress.

2. The spring assembly according to claim 1, wherein: The pressing adjustment mechanism also includes at least one slide groove (22) provided on the top of the inner cylinder (13), an insert block (16) is slidably installed inside the slide groove (22), and the top of the movable plate (14) is provided with at least one guide groove (15) and an arc groove (6), and the guide groove (15) and the arc groove (6) are both arranged in a ring array with the geometric center of the inner cylinder (13). A protrusion block (21) is provided on the top of the insert block (16), and the protrusion block (21) is located inside the guide groove (15). The outer wall of the cylinder (1) is symmetrically provided with at least one group of equidistantly arranged sockets (8).

3. The spring assembly according to claim 2, wherein: At least one flat-headed rod (7) is symmetrically fixedly connected to the top of the inner cylinder (13), and one end of the top of the flat-headed rod (7) passes through the arc-shaped groove (6) at the top of the movable plate (14), and the outer diameter of the top end of the flat-headed rod (7) is larger than the inner diameter of the arc-shaped groove (6).

4. The spring assembly according to claim 2, wherein: Two rectangular grooves (5) are symmetrically provided on the inner wall of the through hole (23) on the movable plate (14).

5. The spring assembly according to claim 1, wherein: A C-shaped limit buckle (10) is rotatably mounted on the top of the movable plate (14), and the inner diameter of the opening of the C-shaped limit buckle (10) matches the outer diameter of the pull rope (4).

6. The spring assembly according to claim 1, wherein: At least one hanging ear (3) is symmetrically fixedly connected to the outer wall of the cylinder (1).

7. The spring assembly according to claim 2, wherein: An extension tube (20) is fixedly connected to the inner wall of the through hole (23) on the movable plate (14), and the extension tube (20) is used to penetrate the movable plate (14) and the through hole (23) on the inner cylinder (13).

8. The spring assembly according to claim 1, wherein: The movable plate (14) and the outer diameter of the movable plate (14) are both smaller than the outer diameter of the inner cylinder (13).

9. The spring assembly according to claim 2, wherein: The length of the guide groove (15) matches the length of the insert block (16).

10. A spring mattress, characterized in that: The invention comprises a spring assembly according to any one of claims 1 to 9.

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