CN113700784A

CN113700784A - Pull type annular spring and assembling method

Info

Publication number: CN113700784A
Application number: CN202111098950.9A
Authority: CN
Inventors: 季乐
Original assignee: Changzhou Sanzhong Elastic Technology Co ltd
Current assignee: Nanjing Sanzhong Elastic Technology Research Institute Co.,Ltd.
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2021-11-26
Anticipated expiration: 2041-09-18
Also published as: CN113700784B

Abstract

The invention provides a pull type annular spring, which comprises: an outer ring having a double-sided inner tapered surface recessed at an obtuse angle; the inner ring is embedded in the outer ring; the inner ring is fixedly connected with the outer end of the inner ring. The invention also provides an assembling method of the pull type annular spring, which comprises the following steps: pressing the opening to reduce the diameter of the inner ring and then loading the inner ring into the outer ring; loosening the opening to recover the diameter of the inner ring to be incapable of being separated from the outer ring; and filling a filling block, and firmly connecting the filling block with the inner ring by using brazing or self-locking technology. The matched structural design of the outer ring and the inner ring realizes the application of the spring in the stretching working condition, and the design of the opening enables the assembly process of the spring to be simpler and more convenient.

Description

Pull type annular spring and assembling method

Technical Field

The invention relates to the field of springs, in particular to a pull type annular spring and an assembling method.

Background

The annular spring is generally formed by matching and overlapping an outer ring with double-side inner conical surfaces protruding to form an obtuse angle and an inner ring with similar outer conical surfaces, and is generally used as a compression spring in occasions with limited space size and strong buffering requirements. Due to the structural limitation of the ring spring, the assembly is difficult to change the directions of the conical surfaces of the outer ring and the inner ring, so that the ring spring cannot be used as the extension spring. Therefore, improving the mating structure of the outer ring and the inner ring of the ring spring and providing an assembly method are technical difficulties that a technician needs to overcome.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a pull type annular spring and an assembling method.

In order to achieve the above objects and other objects, the present invention includes the following technical solutions: the invention provides a pull type annular spring, which is characterized by comprising the following components: an outer ring having a double-sided inner tapered surface recessed at an obtuse angle; and the inner ring is embedded in the outer ring. The matched structural design of the outer ring and the inner ring realizes the application of the spring in the stretching working condition.

In one embodiment, an end of the inner ring embedded in the outer ring is an outer conical ring, an end of the outer ring sleeved in the inner ring is an inner conical ring, and a conical angle of the outer ring is equal to that of the inner ring. The angles of the conical surfaces are equal, so that the matching between the inner ring and the outer ring is ensured

In one embodiment, the angle of the conical surface is larger than the friction angle, so that the spring can automatically recover after the tensile force is removed.

In one embodiment, the spring comprises a plurality of outer rings, and two inner rings between two adjacent outer rings are fixedly connected.

In one embodiment, two inner rings between two adjacent outer rings are integrally formed.

In one embodiment, the spring further comprises a connection ring fixedly connected to the inner ring at the outermost end.

In one embodiment, the connection ring is integrally formed with the inner ring.

In one embodiment, the inner ring includes an opening, and when the opening is closed, the maximum outer diameter of the inner ring is smaller than the minimum inner diameter of the outer ring. The design of the opening enables the assembly process of the spring to be simpler and more convenient.

In one embodiment, the spring further comprises a filler block, and the filler block is located in the opening and fixedly connected with the inner ring.

The invention also provides an assembling method of the pull type annular spring, which is characterized by comprising the following steps: pressing the opening to reduce the diameter of the inner ring and then loading the inner ring into the outer ring; loosening the opening to recover the diameter of the inner ring to be incapable of being separated from the outer ring; and filling a filling block, and firmly connecting the filling block with the inner ring by using brazing or self-locking technology.

The invention has the advantages of ingenious conception, simple structure, convenient use and good use and popularization value.

Drawings

Fig. 1A shows a cross-sectional view of a first embodiment of the present invention.

Fig. 1B shows a cross-sectional view of a second embodiment of the present invention.

Figure 2 shows an isometric view of a first embodiment of the present invention.

Fig. 3 shows a flow chart of the assembling method of the pull type ring spring of the invention.

Fig. 4 shows an isometric view of the first embodiment of the present invention after filling with the filler blocks has been completed.

Detailed Description

Please refer to fig. 1 to 4. The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

As shown in fig. 1A and 1B, the invention provides a pull-type annular spring, which comprises an inner ring 1, an outer ring 2 and a connecting ring 3, wherein one end of the outer ring 2 is sleeved with one inner ring 1, the other end of the outer ring 2 is sleeved with the other inner ring 1, the two inner rings 1 between two adjacent outer rings 2 are fixedly connected, and further, the two inner rings 1 between the two adjacent outer rings 2 are integrally formed. The connecting ring 3 is fixedly connected with the inner ring 1 positioned at the outermost end, and further, the connecting ring 3 and the inner ring 1 are integrally formed. The number of the inner ring 1 and the outer ring 2 is determined according to the size of the tensile force applied to the inner ring and the outer ring and the requirement of deformation. In fig. 1, four of the outer rings 2 and eight of the inner rings 1 are connected in series. The inner ring 1, the outer ring 2 and the connecting ring 3 can be made of spring steel or high-strength aluminum alloy and other conventional metal materials.

One end of the inner ring 1 sleeved with the outer ring 2 is an outer conical ring, and one end of the outer ring 2 sleeved with the inner ring 1 is an inner conical ring. The outer ring 2 is provided with a double-sided inner conical surface which is recessed to form an obtuse angle. The conical surface angle of the outer ring 2 is equal to that of the inner ring, so that matching is guaranteed. Meanwhile, in order to realize automatic reset, the conical surface angle is required to be ensured to be larger than the friction angle.

As shown in fig. 1A, in the first embodiment, a gap is provided between two inner rings 1 sleeved by the outer ring 2, and a gap is also provided between two adjacent outer rings 2. The gap is not necessary. As shown in fig. 1B, in the second embodiment, there is no gap between two inner rings 1 sleeved by the outer ring 2, and there is no gap between two adjacent outer rings 2.

As shown in fig. 2, the inner ring 1 and the connecting ring 3 are provided with openings 11, and when the openings 11 are in a closed state, the maximum outer diameter of the inner ring 1 is slightly smaller than the minimum inner diameter of the outer ring 2, so that the inner ring 1 can be installed in the outer ring 2 by pressing the openings 11. The outer ring 2 is a closed ring (open in the figure to show the internal structure).

As shown in fig. 3, the present invention also provides an assembling method of a pull type ring spring, the assembling method comprising:

step S1: the opening 11 is pressed tightly, so that the inner ring 1 is installed in the outer ring 2 after the diameter is reduced;

step S2: loosening the opening 11 to recover the diameter of the inner ring 1 to be incapable of being separated from the outer ring 2;

step S3: and filling a filling block, and firmly connecting the filling block with the inner ring 1 by using brazing or self-locking technology.

As shown in fig. 4, the filling block (not shown) fills the opening 11, so that the inner ring 1 forms a closed loop structure. When the connecting rings 3 at the top end and the bottom end of the spring are under tension, the gap between two inner rings 1 sleeved by the outer ring 2 and the gap between two adjacent outer rings 2 are increased, and the inner ring 1 and the outer ring 2 deform. When the force is removed, the inner ring 1 and the outer ring 2 are elastically restored.

Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value. The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A pull ring spring, comprising:

an outer ring having a double-sided inner tapered surface recessed at an obtuse angle;

and the inner ring is embedded in the outer ring.

2. The pull-type ring spring according to claim 1, wherein an end of the inner ring embedded in the outer ring is an outer conical ring, an end of the outer ring sleeved in the inner ring is an inner conical ring, and a conical angle of the outer ring is equal to that of the inner ring.

3. The pull ring spring according to claim 2, wherein the taper angle is greater than the friction angle.

4. The pull ring spring according to claim 1, comprising a plurality of said outer rings, two of said inner rings between two adjacent outer rings being fixedly connected.

5. The pull ring spring according to claim 4, wherein two inner rings between two adjacent outer rings are integrally formed.

6. The pull ring spring as set forth in claim 1, further comprising a connection ring fixedly connected to the inner ring at an outermost end.

7. The pull ring spring as set forth in claim 6, wherein said connecting ring is integrally formed with said inner ring.

8. The pull ring spring according to claim 1, wherein the inner ring includes an opening, and when the opening is closed, a maximum outer diameter of the inner ring is smaller than a minimum inner diameter of the outer ring.

9. The pull ring spring according to claim 8, further comprising a filler block located within the opening in fixed connection with the inner ring.

10. A method of assembling a pull type ring spring according to claims 1 to 9, comprising the steps of:

pressing the opening to reduce the diameter of the inner ring and then loading the inner ring into the outer ring;

loosening the opening to recover the diameter of the inner ring to be incapable of being separated from the outer ring;

and filling the filling blocks, and firmly connecting the filling blocks with the inner ring by using brazing or self-locking technology and the like.