Spring assembly with adjustable hardness and spring mattress

Abstract

The utility model discloses a hardness adjustable spring assembly and spring mattress, including barrel and inner barrel: the outer wall of barrel is provided with first groove, the inner barrel is provided with second groove, the inner barrel is installed inside the barrel in sliding mode, the convex surface of the first groove is attached to the concave surface of the second groove, the convex surface of the first groove is attached to the concave surface of the second groove, and the concave surface of the second groove is attached to the convex surface of the first 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 enables an adjusting spring to be compressed by pressing a cover plate downwards, the hardness of the 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] This utility model relates to the field of spring mattress technology, specifically to an adjustable spring assembly and a spring mattress. Background Technology

[0002] Modern lifestyles, such as prolonged driving and office work, often lead to discomfort in the lower back and neck, which can accumulate over time and cause conditions like hunchback and herniated discs. During long-term use, mattresses require frequent adjustments to the height of the springs corresponding to the lumbar region, ensuring the mattress is between flat and raised (allowing the springs corresponding to the lumbar region to protrude). This keeps the lower back in the body's natural physiological curvature and in a state of reverse spinal stretch, thus preventing and correcting hunchback, and also repairing the damage to the spine caused by hidden sagging.

[0003] Traditional mattress designs force the body to adapt to a mattress with a firmness mismatched to its weight by adjusting sleeping positions, thus achieving comfort by conforming to the body's natural physiological curvature. When lying flat, different weights and heights require varying levels of support and elasticity for the lumbar region. Furthermore, existing spring mattresses generally suffer from issues such as non-adjustable firmness and inability to precisely control localized height, preventing users from personalizing adjustments according to their body shape or comfort needs, resulting in poor comfort and adaptability. Additionally, some adjustable mattresses have complex designs, inconvenient operation, and lack stable and effective limiting and positioning mechanisms, easily leading to mattress structural loosening or malfunction. Therefore, there is an urgent need for a mattress spring assembly with a reasonable structure, flexible adjustment, and the ability to adjust both overall firmness and localized height control. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable spring assembly and spring mattress to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable spring assembly, comprising a cylindrical body and an inner cylinder:

[0006] 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 installed inside the cylinder, and the convex surface of the first groove is in contact with the concave surface of the second groove. An adjusting spring is provided inside the inner cylinder, and a movable plate is provided at the top of the inner cylinder. The inner cylinder is fixed to the cylinder through the movable plate.

[0007] The bottom end of the adjusting spring is connected to a fixed plate, and a pull rope is installed on the top of the fixed plate. The inner cylinder and the center of the top of the movable plate are provided with through holes. The top end of the pull rope has two through holes respectively, and the outer wall of the pull rope is provided with several equidistant limit knots.

[0008] The cylindrical body, the inner cylinder, and the movable plate constitute a pressing adjustment mechanism for adjusting the protrusion height of the adjusting spring in the mattress. The cylindrical body, the inner cylinder, the pull cord, and the fixed plate constitute a pulling adjustment mechanism for adjusting the firmness of the adjusting spring in the mattress.

[0009] Preferably, the pressing adjustment mechanism further includes at least one sliding groove on the top of the inner cylinder, with an insert block slidably installed inside the sliding groove. The top of the movable plate is provided with at least one guide groove and an arc-shaped groove, both of which are arranged in a circular array around the geometric center of the inner cylinder. The top of the insert block is provided with a protrusion, which is located inside the guide groove. The outer wall of the cylinder 1 is symmetrically provided with at least one set of equally spaced insertion holes 8.

[0010] Preferably, at least one flat-headed rod is symmetrically fixedly connected to the top of the inner cylinder. One top end of the flat-headed rod passes through the arc-shaped groove at 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.

[0011] Preferably, the inner walls of the through holes on the movable plate are symmetrically provided with two rectangular grooves.

[0012] Preferably, a C-shaped limiting buckle is rotatably mounted on the top of the movable plate, and the inner diameter of the opening of the C-shaped limiting buckle matches the outer diameter of the pull rope.

[0013] Preferably, at least one hanging lug is symmetrically fixedly connected to the outer wall of the cylinder.

[0014] 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 through hole on the movable plate and the inner cylinder.

[0015] Preferably, both the movable plate and the outer diameter of the movable plate are smaller than the outer diameter of the inner cylinder.

[0016] Preferably, the length of the guide groove matches the length of the insert block.

[0017] This utility model also provides a spring mattress, which includes any of the preferred spring assemblies described above.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: The spring assembly provided by this utility model includes a pressing adjustment mechanism and a pulling adjustment mechanism. When in use, the pressing adjustment mechanism and the pulling adjustment mechanism compress the adjusting spring by pressing down the movable plate and tightening the rope of the fixed plate. At the same time, the rotating movable plate drives the insert block to be inserted into the insertion hole to fix the current mattress firmness and protrusion degree, thereby realizing the 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. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the adjustable stiffness spring assembly according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the adjustable stiffness spring assembly from another perspective, according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the structure of the adjustable stiffness spring assembly, including the cylinder, inner cylinder, and spring, according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the inner cylinder and movable plate in the adjustable spring assembly according to an embodiment of the present invention;

[0023] Figure 5 This is an exploded view of the adjustable stiffness spring assembly according to an embodiment of the present invention.

[0024] Figure 6 This is an embodiment of the present utility model. Figure 5 A magnified structural diagram of part A in the middle;

[0025] Figure 7 This is a cross-sectional structural diagram of the inner cylinder and the middle cylinder of the adjustable stiffness spring assembly according to an embodiment of the present utility model.

[0026] Figure 8 This is a schematic diagram of the structure of the spring mattress and the adjustable spring assembly according to an embodiment of the present invention.

[0027] In the diagram: 1. Cylinder body; 3. Hanging lug; 4. Pull rope; 5. Rectangular groove; 6. Arc groove; 7. Flat-head rod; 8. Insertion hole; 9. First groove; 10. C-shaped limit buckle; 11. Adjusting spring; 12. Fixing plate; 13. Inner cylinder; 14. Movable plate; 15. Guide groove; 16. Insertion block; 17. Limiting knot; 18. Second groove; 20. Extension tube; 21. Protrusion block; 22. Sliding groove; 23. Through hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the embodiments of this application, the direction in which the front of the spring mattress faces when it is laid flat is described as "down" and the opposite direction as "up," that is, the spring assembly's cylinder 1 and inner cylinder 13 are arranged in the direction in which the back of the mattress faces.

[0030] Please see Figures 1-5 The present invention provides an adjustable spring assembly and spring mattress, comprising: a core 1 and an inner core 13.

[0031] 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 is in contact with 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.

[0032] The first groove 9 on the outer wall of the cylinder 1 fits into the second groove 18 on the inner cylinder 13 to ensure the stability of the inner cylinder 13 when it moves up and down inside the cylinder 1. An adjusting spring 11 is installed inside the inner cylinder 13 to provide elastic support and a soft and bouncy feel inside the spring bed.

[0033] like Figures 1-7 As shown, a pulling adjustment mechanism is installed on the adjusting spring 11. The pulling adjustment mechanism includes a fixed plate 12, which is fixedly connected to one bottom end of the adjusting spring 11. 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. One top end of the pull rope 4 passes through two through holes 23 respectively. A number of limiting knots 17 are arranged at equal intervals on the outer wall of the pull rope 4.

[0034] According to an embodiment of this application, when the adjustment mechanism is operated, the bottom of the adjustment spring 11 is fixed by the fixing plate 12, the pull rope 4 is connected to the fixing plate 12 and passes upward through the through hole 23, and 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.

[0035] like Figures 1-5 As shown, the inner cylinder 1 is equipped with a pressing adjustment mechanism, which includes three symmetrically arranged sliding grooves 22 on the top of the inner cylinder 13. Insert blocks 16 are slidably installed inside the sliding grooves 22. The top of the movable plate 14 is symmetrically provided with three guide grooves 15 and three arc-shaped grooves 6. The top of each movable plate 14 is also symmetrically provided with three arc-shaped grooves 6. The guide grooves 15 and arc-shaped grooves 6 are arranged in a circular array around the geometric center of the inner cylinder 13. The top of the insert block 16 is provided with a protrusion 21, which is located inside the guide groove 15. The outer wall of the cylinder 1 is symmetrically provided with at least one set of equidistantly arranged insertion holes 8.

[0036] According to the embodiments of this application, when the pressing adjustment mechanism is operated, the rotating movable plate 14 is rotated, thereby driving the insert 16 to move outward along the slide groove 22 towards the inner cylinder 13, so that the insert 16 moves outward and inserts into the insertion hole 8, locking the current position of the inner cylinder 13. In addition, three flat-head rods 7 are symmetrically fixedly connected to the top of the inner cylinder 13. One end of the top of the flat-head 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-head rod 7 is larger than the inner diameter of the arc groove 6. The three flat-head rods 7 at the top of the inner cylinder 13 passing through the arc groove 6 can limit the rotation angle of the movable plate 14, while preventing the movable plate 14 from detaching from the top of the inner cylinder 13.

[0037] Reference Figure 6 To facilitate the rotation of the movable plate 14, two rectangular slots 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 matching shape to the rectangular slot 5 to insert into the through hole 23 and the rectangular slot 5 and rotate it counterclockwise or clockwise, so as to quickly rotate the movable plate 14 to move the insert block 16.

[0038] 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 cylinder 13. The extension tube 20 can increase the stability when the movable plate 14 and the inner cylinder 13 are nested together and reduce shaking.

[0039] 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 rotate to allow the pull rope 4 to enter its opening, and the position is restricted by the limit knot 17 on the pull rope 4 after the softness and hardness are adjusted.

[0040] like Figures 1-3 As shown, two hooks 3 are symmetrically fixed to the outer wall of the cylinder 1. The outer coil of the spring in a conventional spring mattress can pass through the hooks 3, thereby installing the spring assembly in a part of the spring mattress.

[0041] 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 can rotate on the inner cylinder 13 without being affected by the first groove 9.

[0042] In this embodiment, the number of each set of insertion holes 8 is no less than three. The number of limiting knots 17 matches the number of insertion holes 8 and the spacing between them. After pressing the inner cylinder 13 to compress the adjusting spring 11, the position of the insertion hole 8 into which the insertion block 16 is inserted represents the compression level of the adjusting spring 11. After the compression level of the adjusting spring 11 is determined, the number and spacing of the insertion holes 8 under that level are compared with the number and spacing of the pull rope 4 to make the number and spacing of the limiting knots 17 match the number and spacing of the insertion holes 8. This causes the protruding part of the mattress to drop and become flat. At this time, the C-shaped limiting buckle 10 is fastened into the pull rope 4 to block the limiting knot 17, thus completing the fixation after leveling.

[0043] Reference Figure 8 The present invention also provides a spring mattress, which includes the spring assembly in any of the above embodiments.

[0044] In summary, the spring assembly provided by this utility model includes a cylindrical body 1 and an inner cylinder 13 slidably installed inside it. The first groove 9 on the outer wall of the cylindrical body 1 fits into the second groove 18 on the inner cylinder 13 to ensure the stability of the inner cylinder 13 when it moves up and down inside the cylindrical body 1. An adjusting spring 11 is installed inside the inner cylinder 13 to provide elastic support and a soft and bouncy feel inside the spring bed. The top of the inner cylinder 13 is provided with a movable plate 14, and a through hole 23 is provided at the center of the top of the three components to facilitate the passage of the pull rope 4.

[0045] The principle of leveling a spring mattress is as follows: when a part of the spring mattress is uneven, the spring assembly located in that part is adjusted. By pressing the movable plate 14 and the inner core 13, the adjustment spring 11 is raised, raising 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 insert hole 8, thereby locking the current position of the inner core 13 and completing the mattress leveling operation.

[0046] The principle of adjusting the firmness of a spring mattress is as follows: By pressing the movable plate 14 and the inner cylinder 13, the appropriate protrusion height of the adjusting spring 11 in the spring mattress is raised, and the movable plate 14 is rotated to lock the insert 16 and the insert hole 8 together. At this time, pulling the pull rope 4 will retract one end of the adjusting spring 11 to be flush with the surface of the spring mattress, thereby changing the firmness of the spring assembly at the installation part of the spring mattress;

[0047] The principle of adjusting the spring mattress is as follows: by pressing the movable plate 14 and the inner cylinder 13, the adjusting spring 11 is raised, making it protrude in the spring mattress. The movable plate 14 is rotated to lock the insert 16 with the insert hole 8, adjusting the height of the spring assembly at the installation part of the spring mattress. At the same time, combined with the pulling of the pull rope 4, the height of the adjusting spring 11 is finely adjusted to determine the firmness of the protruding part.

[0048] The spring assembly provided in this embodiment can adjust the flatness, firmness, and protrusion 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.

[0049] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spring assembly with adjustable stiffness, characterized in that, It includes a cylindrical body (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 installed inside the cylinder (1), and the convex surface of the first groove (9) is in contact with 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). The bottom end of the adjusting spring (11) is connected to a fixing plate (12), and a pull rope (4) is installed on the top of the fixing plate (12). The inner cylinder (13) and the movable plate (14) are provided with through holes (23) at the top center. The top end of the pull rope (4) has two through holes (23) respectively. The outer wall of the pull rope (4) is provided with several equidistant limit knots (17). The cylinder (1), the inner cylinder (13), and the movable plate (14) constitute a pressing adjustment mechanism for adjusting the protrusion height of the adjusting spring (11) in the mattress. The cylinder (1), the inner cylinder (13), the pull rope (4), and the fixed plate (12) constitute a pulling adjustment mechanism for adjusting the firmness of the adjusting spring (11) in the mattress.

2. The spring assembly according to claim 1, characterized in that: The pressing adjustment mechanism also includes at least one slide groove (22) on the top of the inner cylinder (13). A plug (16) is slidably installed inside the slide groove (22). At least one guide groove (15) and arc groove (6) are provided on the top of the movable plate (14). The guide groove (15) and arc groove (6) are arranged in a ring array around the geometric center of the inner cylinder (13). A protrusion (21) is provided on the top of the plug (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 set of equally spaced insertion holes (8).

3. The spring assembly according to claim 2, characterized in that: At least one flat-head rod (7) is symmetrically fixedly connected to the top of the inner cylinder (13). One end of the top of the flat-head 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-head rod (7) is larger than the inner diameter of the arc groove (6).

4. The spring assembly according to claim 2, characterized in that: The inner wall of the through hole (23) on the movable plate (14) is symmetrically provided with two rectangular grooves (5).

5. The spring assembly according to claim 1, characterized in that: 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, characterized in that: At least one hanging lug (3) is symmetrically fixedly connected to the outer wall of the cylinder (1).

7. The spring assembly according to claim 2, characterized in that: 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 movable plate (14) and the inner cylinder (13).

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

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

10. A spring mattress, characterized in that, Includes the spring assembly as described in any one of claims 1-9.

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