CN221704270U - High-toughness spiral spring - Google Patents

Abstract

The utility model discloses a high-toughness spiral spring, which comprises an outer spring and an inner spring, wherein a sleeve is arranged in the outer spring, a telescopic pipe is arranged above the sleeve, the sleeve and the telescopic pipe are movably sleeved with the inner spring, a sliding groove is formed in the sleeve, the telescopic pipe is in sliding connection with the sleeve through the sliding groove, a clamping block is arranged below the telescopic pipe, the clamping block is movably clamped with the sleeve, a first clamping ring and a second clamping ring are arranged above the inner spring, the first clamping ring and the second clamping ring are movably clamped with the upper end of the inner spring, four groups of symmetrically distributed supporting rings are arranged in the sleeve, the inner sides of the supporting rings are attached to the inner spring, limitation on the extending directions of the outer spring and the inner spring is realized through the arrangement of the sleeve and the telescopic pipe, and the situation that when the two groups of springs are used together, the two groups of springs are relatively moved or are not concentric is avoided, and further the stress of the two groups of springs are unbalanced and inclined.

Description

A high-toughness coil spring

Technical Field

The utility model relates to the technical field of spiral springs, in particular to a high-toughness spiral spring.

Background Art

A spring is a mechanical part that uses elasticity to work. Parts made of elastic material deform under the action of external force and return to their original shape after the external force is removed. They are also called "springs" and are generally made of spring steel. There are many types of springs. According to their shape, they mainly include coil springs, scroll springs, leaf springs, and special-shaped springs.

In the prior art, in order to adapt to different usage scenarios and ensure sufficient resilience, springs with different inner diameters are sleeved together for use to control the movement of mechanical parts, alleviate impact or vibration, store energy, etc. However, the two springs are prone to relative movement and cause eccentricity, which makes the springs subjected to uneven force and prone to tilting, which not only affects the working performance of the springs, but also reduces the service life of the springs. In addition, the existing springs have poor tensile strength and can no longer provide protection for the movement of mechanical parts after the springs are over-stretched.

Utility Model Content

The purpose of the utility model is to provide a high-toughness coil spring to solve the problems raised in the above background technology.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-toughness coil spring, comprising an outer spring and an inner spring, a sleeve is provided inside the outer spring, a telescopic tube is provided above the sleeve, the sleeve and the telescopic tube are both movably connected with the inner spring, a sliding groove is provided inside the sleeve, the telescopic tube is slidably connected with the sleeve through the sliding groove, a clamping block is provided below the telescopic tube, the clamping block is movably connected with the sleeve, a first clamping ring and a second clamping ring are provided above the inner spring, the first clamping ring and the second clamping ring are both movably connected with the upper end of the inner spring, four groups of symmetrically distributed abutting rings are provided in the sleeve, and the inner side of the abutting ring is in contact with the inner spring.

As a further preferred embodiment of the present technical solution, a damping rod is provided between the butt ring and the sleeve, and the number of the damping rods is set to four groups, and the four groups of damping rods are symmetrically distributed, and the two ends of the damping rod are respectively fixedly connected to the sleeve and the butt ring, and a tension spring is sleeved on the damping rod.

As a further preferred embodiment of the present technical solution, mounting seats are provided at both ends of the sleeve and the telescopic tube, both ends of the outer spring are fixedly connected to the two groups of mounting seats respectively, the lower end of the inner spring is fixedly connected to the mounting seat, two groups of symmetrically distributed mounting frames are provided on the telescopic tube, a mounting tube is sleeved on the mounting frame, the mounting tube is rotatably connected to the mounting frame, the first clamping ring and the second clamping ring are symmetrically distributed, and the first clamping ring and the second clamping ring are both rotatably connected to the mounting tube.

As a further preferred embodiment of the present technical solution, two groups of torsion springs are sleeved on the mounting tube, and the two groups of torsion springs are respectively arranged corresponding to the first clamping ring and the second clamping ring, and the two ends of the torsion spring are respectively fixedly connected to the first clamping ring or the second clamping ring and the mounting tube.

As a further preferred embodiment of the technical solution, a threaded rod is provided on the left side of the sleeve, the threaded rod passes through the sleeve and is threadedly connected to the sleeve, a rubber block is provided below the threaded rod, and the rubber block is arranged corresponding to the clamping block.

As a further preferred embodiment of the present technical solution, a through hole is formed on the telescopic tube, the through hole is arranged corresponding to the threaded rod, and the telescopic tube is movably connected to the threaded rod through the through hole.

The utility model provides a high-toughness helical spring, which has the following beneficial effects:

(1) The utility model limits the expansion and contraction directions of the outer spring and the inner spring by providing a sleeve and a telescopic tube, thereby avoiding relative movement or eccentricity when the two groups of springs are used together, thereby causing the two groups of springs to be subjected to uneven force and tilt; the two ends of the outer spring are respectively fixedly connected to the two groups of mounting seats, the lower end of the inner spring is fixed to the mounting seat and the upper end is fixed by two groups of first clamping rings and second clamping rings, and the four groups of abutment rings are symmetrically distributed on the outer side of the inner spring, and fit with the outer side of the inner spring under the action of the damping rod and the tension spring to limit the inner spring. When the two groups of springs are subjected to downward compression force during use, they move in the vertical direction under the action of the telescopic tube and the sleeve. If a certain degree of torsion occurs, it is also twisted synchronously under the action of the sleeve and the telescopic tube. The centers of the two groups of springs always coincide, avoiding uneven force, and because of the rigidity of the sleeve and the telescopic tube, the inner spring and the outer spring will not tilt and be damaged during use.

(2) The utility model adjusts the position of the rubber block by setting a threaded rod, thereby limiting the maximum upward position to which the telescopic tube can be moved. Since the two ends of the inner and outer springs are respectively fixedly mounted on two sets of mounting seats, the position of the rubber block during the stretching process is the maximum movable position of the telescopic tube, thereby avoiding excessive stretching of the inner and outer springs, which would cause the springs to be over-stretched and thus fail to provide protection for the movement of the machine parts.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a cross-sectional view of the sleeve of the present invention;

FIG3 is an enlarged view of the structure of A in FIG2 of the present utility model;

FIG4 is a schematic structural diagram of a first clamping ring of the present invention;

In the figure: 1. outer spring; 2. inner spring; 3. sleeve; 4. telescopic tube; 5. slide groove; 6. clamping block; 7. mounting seat; 8. retaining ring; 9. damping rod; 10. tension spring; 11. first clamping ring; 12. second clamping ring; 13. mounting frame; 14. mounting tube; 15. torsion spring; 16. threaded rod; 17. rubber block; 18. through hole.

DETAILED DESCRIPTION

The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

The utility model provides a technical solution: as shown in Figures 1, 2 and 4, in this embodiment, a high-toughness coil spring comprises an outer spring 1 and an inner spring 2, a sleeve 3 is arranged in the outer spring 1, a telescopic tube 4 is arranged above the sleeve 3, the sleeve 3 and the telescopic tube 4 are both movably sleeved with the inner spring 2, a slide groove 5 is opened in the sleeve 3, the telescopic tube 4 is slidably connected with the sleeve 3 through the slide groove 5, a clamping block 6 is arranged below the telescopic tube 4, the clamping block 6 is movably clamped with the sleeve 3, a first clamping ring 11 and a second clamping ring 12 are arranged above the inner spring 2, the first clamping ring 11 and the second clamping ring 12 are both movably clamped with the upper end of the inner spring 2, four groups of symmetrically distributed abutting rings 8 are arranged in the sleeve 3, the inner side of the abutting ring 8 is fitted with the inner spring 2, a damping rod 9 is arranged between the abutting ring 8 and the sleeve 3, and the number of the damping rods 9 is set in four groups, and the four groups of damping rods 9 are symmetrically distributed. The two ends of 9 are fixedly connected with the sleeve 3 and the butt ring 8 respectively, the damping rod 9 is sleeved with a tension spring 10, the sleeve 3 and the telescopic tube 4 are provided with mounting seats 7 at both ends, the two ends of the outer spring 1 are fixedly connected with the two groups of mounting seats 7 respectively, the lower end of the inner spring 2 is fixedly connected with the mounting seat 7, the telescopic tube 4 is provided with two groups of symmetrically distributed mounting frames 13, the mounting frames 13 are sleeved with mounting tubes 14, the mounting tubes 14 are rotatably connected with the mounting frames 13, the first clamping ring 11 and the second clamping ring 12 are symmetrically distributed, the first clamping ring 11 and the second clamping ring 12 are rotatably connected with the mounting tube 14, the mounting tube 14 is sleeved with two groups of torsion springs 15, the two groups of torsion springs 15 are respectively arranged corresponding to the first clamping ring 11 and the second clamping ring 12, and the two ends of the torsion spring 15 are respectively fixedly connected with the first clamping ring 11 or the second clamping ring 12 and the mounting tube 14.

The sleeve 3 and the telescopic tube 4 are provided to limit the telescopic direction of the outer spring 1 and the inner spring 2, so as to avoid relative movement or eccentricity when the two groups of springs are used together, thereby causing the two groups of springs to be subjected to uneven force and tilt; the two ends of the outer spring 1 are respectively fixedly connected to the two groups of mounting seats 7, the lower end of the inner spring 2 is fixed to the mounting seat 7 and the upper end is fixed by two groups of first clamping rings 11 and second clamping rings 12, four groups of abutting rings 8 are symmetrically distributed on the outer side of the inner spring 2, and are fitted with the outer side of the inner spring 2 under the action of the damping rod 9 and the tension spring 10, so as to limit the inner spring 2, and the two groups of springs are subjected to downward compression force during use. Under the action of the telescopic tube 4 and the sleeve 3, the two groups of springs move in the vertical direction. If a certain degree of torsion occurs, it is also synchronously twisted under the action of the sleeve 3 and the telescopic tube 4, and the centers of the two groups of springs always coincide, so as to avoid uneven force, and because of the rigidity of the sleeve 3 and the telescopic tube 4, the inner spring 2 and the outer spring 1 will not be tilted and damaged during use.

As shown in Figures 2 and 3, a threaded rod 16 is provided on the left side of the sleeve 3, the threaded rod 16 passes through the sleeve 3 and is threadedly connected to the sleeve 3, a rubber block 17 is provided below the threaded rod 16, the rubber block 17 is arranged corresponding to the clamping block 6, a through hole 18 is opened on the telescopic tube 4, the through hole 18 is arranged corresponding to the threaded rod 16, and the telescopic tube 4 is movably clamped with the threaded rod 16 through the through hole 18.

The position of the rubber block 17 is adjusted by setting the threaded rod 16, thereby limiting the maximum upward position of the telescopic tube 4. Since the two ends of the inner and outer springs 1 are respectively fixed to the two sets of mounting seats 7, the position of the rubber block 17 during the stretching process is the maximum movable position of the telescopic tube 4, thereby avoiding excessive stretching of the inner and outer springs 1, which would cause the spring to be over-stretched and thus fail to provide protection for the movement of the machine parts.

The utility model provides a high-toughness coil spring, and the specific working principle is as follows: the two ends of the outer spring 1 are respectively fixedly connected to the two groups of mounting seats 7, the lower end of the inner spring 2 is fixed to the mounting seat 7, and the upper end is fixed by two groups of first clamping rings 11 and second clamping rings 12, four groups of abutment rings 8 are symmetrically distributed on the outer side of the inner spring 2, and are fitted with the outer side of the inner spring 2 under the action of the damping rod 9 and the tension spring 10, so as to limit the inner spring 2. When the two groups of springs are subjected to downward compression force during use, they move in the vertical direction under the action of the telescopic tube 4 and the sleeve 3. If a certain degree of torsion occurs, the sleeve 3 and the telescopic tube 4 will be The inner and outer springs 2 and 1 are also twisted synchronously, and the centers of the two groups of springs always coincide to avoid uneven force. Because of the rigidity of the sleeve 3 and the telescopic tube 4, the inner spring 2 and the outer spring 1 will not tilt and be damaged during use. The threaded rod 16 is provided to adjust the position of the rubber block 17, and then the maximum upward position of the telescopic tube 4 is limited. Since the two ends of the inner and outer springs 1 are fixedly installed with the two groups of mounting seats 7 respectively, the position of the rubber block 17 during the stretching process is the maximum movable position of the telescopic tube 4, thereby avoiding excessive stretching of the inner and outer springs 1, which causes excessive stretching of the spring and thus fails to provide protection for the movement of the machine parts.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a high toughness coil spring, includes outer spring (1) and interior spring (2), its characterized in that: be equipped with sleeve pipe (3) in outer spring (1), sleeve pipe (3) top is equipped with flexible pipe (4), sleeve pipe (3) and flexible pipe (4) all cup joint with interior spring (2) activity, spout (5) have been seted up in sleeve pipe (3), flexible pipe (4) are through spout (5) and sleeve pipe (3) sliding connection, flexible pipe (4) below is equipped with fixture block (6), fixture block (6) and sleeve pipe (3) activity joint, interior spring (2) top is equipped with first snap ring (11) and second snap ring (12), first snap ring (11) and second snap ring (12) all with interior spring (2) upper end activity joint, be equipped with four sets of symmetric distribution's support ring (8) in sleeve pipe (3), support ring (8) inboard and interior spring (2) laminating.

2. A high-toughness coil spring according to claim 1, wherein: the damping device is characterized in that damping rods (9) are arranged between the supporting rings (8) and the sleeve (3), four groups of damping rods (9) are arranged, the damping rods (9) are symmetrically distributed, two ends of each damping rod (9) are fixedly connected with the sleeve (3) and the supporting rings (8) respectively, and extension springs (10) are sleeved on the damping rods (9).

3. A high-toughness coil spring according to claim 1, wherein: the telescopic pipe is characterized in that mounting seats (7) are arranged at two ends of the sleeve (3) and the telescopic pipe (4), two ends of the outer spring (1) are fixedly connected with two groups of mounting seats (7) respectively, the lower end of the inner spring (2) is fixedly connected with the mounting seats (7), two groups of symmetrically distributed mounting frames (13) are arranged on the telescopic pipe (4), mounting pipes (14) are sleeved on the mounting frames (13), the mounting pipes (14) are rotationally connected with the mounting frames (13), the first clamping rings (11) are symmetrically distributed with the second clamping rings (12), and the first clamping rings (11) and the second clamping rings (12) are rotationally connected with the mounting pipes (14).

4. A high-toughness coil spring according to claim 3, wherein: two sets of torsion springs (15) are sleeved on the mounting pipe (14), the two sets of torsion springs (15) are respectively arranged corresponding to the first clamping ring (11) and the second clamping ring (12), and two ends of the torsion springs (15) are respectively fixedly connected with the first clamping ring (11) or the second clamping ring (12) and the mounting pipe (14).

5. A high-toughness coil spring according to claim 1, wherein: the left side of sleeve pipe (3) is equipped with threaded rod (16), threaded rod (16) run through sleeve pipe (3) and with sleeve pipe (3) threaded connection, threaded rod (16) below is equipped with rubber piece (17), rubber piece (17) correspond setting with fixture block (6).

6. A high-toughness coil spring according to claim 1, wherein: the telescopic pipe (4) is provided with a through hole (18), the through hole (18) is arranged corresponding to the threaded rod (16), and the telescopic pipe (4) is movably clamped with the threaded rod (16) through the through hole (18).