Memory alloy fastening ring

Abstract

The utility model discloses a memory alloy fastening ring which comprises a memory alloy wire, a connector arranged at one end of the memory alloy wire and a connecting cap rotationally arranged at the other end of the memory alloy wire, internal threads are arranged on the inner wall of the connecting cap, external threads matched with the internal threads are arranged on the outer wall of the connector, and the memory alloy wire is connected with the connecting cap. And a limiting part is fixedly arranged on the side surface of the connecting cap. Compared with the prior art, the memory alloy fastening ring has the advantages that the memory alloy fastening ring is provided, the limiting part is additionally arranged on the side face of the connecting cap, and the problem that the fastening ring is loosened due to rotation of the connecting cap is effectively solved; in addition, the limiting part and the connecting cap are connected through the AB glue structural layer capable of being heated and melted, and the dismounting process is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of fastening rings, in particular to a memory alloy fastening ring. Background Art

[0002] The core of the memory alloy fastening ring lies in its high-performance shape memory alloy material. This material can automatically return to its preset shape and size under specific temperature or external force, thus achieving precise fastening. This property makes the memory alloy fastening ring have broad application prospects in aviation, aerospace, automotive, electronics and other fields.

[0003] After searching, the Chinese invention patent application with application number 202110083478.5 involves such a shape memory alloy fastening ring. It is mainly composed of a memory alloy wire, a connecting cap and a connector, wherein the connecting cap and the connector are respectively arranged at both ends of the memory alloy wire, and can achieve matching and fixed connection. However, there is a potential problem in the design of the fastening ring: a step hole is provided on the connecting cap, one end of the memory alloy wire is interference fit with the step hole, and the connector and the connecting cap are connected by threading. During installation, it is necessary to insert the connector into one end of the connecting cap, and rotate the connecting cap so that the thread on its inner wall is connected to the thread on the outer wall of the connector. However, although the memory alloy wire can be tightened when heated, due to the lack of a limiting structure in the connecting cap, relative rotation between the connecting cap and the connector is easy to occur during use, resulting in the entire fastening ring composed of memory alloy wire loosening.

[0004] Furthermore, the existing technology also presents some problems when removing the fastening ring. Typically, the fastening ring is heated to within its memory recovery temperature to soften it, and then removed using tools such as pliers and wrenches. This method of removal is relatively cumbersome.

[0005] In summary, how to further optimize the design of the memory alloy fastening ring to improve the stability and durability of the fastening ring and simplify the disassembly process remains an important direction of current research and development work. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a memory alloy fastening ring to solve the above problem.

[0007] To achieve the above-mentioned purpose, the utility model provides a memory alloy fastening ring, comprising a memory alloy wire, a connecting head arranged at one end of the memory alloy wire, and a connecting cap rotatably arranged at the other end of the memory alloy wire, the inner wall of the connecting cap is provided with an internal thread, the outer wall of the connecting head is provided with an external thread matching the internal thread, and a limiting portion is fixedly provided on the side of the connecting cap.

[0008] Preferably, a T-shaped rotating boss is welded and fixed to the connecting end of the memory alloy wire and the connecting cap, and the connecting cap is rotatably mounted on the outside of the T-shaped rotating boss.

[0009] Preferably, a color code is provided on the surface of the memory alloy wire.

[0010] Preferably, the memory alloy wire is a TiNiNb alloy structure.

[0011] Preferably, an adhesive layer is provided between the limiting portion and the connecting cap.

[0012] Preferably, the adhesive layer is an AB adhesive structure layer.

[0013] Compared with the prior art, the present invention has the following advantages: the present invention provides a memory alloy fastening ring, which effectively prevents the fastening ring from loosening due to the rotation of the connecting cap by adding a limiting portion on the side of the connecting cap, thereby significantly improving the stability and durability of the fastening ring. In addition, the limiting portion and the connecting cap are connected by an AB glue structure layer that can be heated and melted, which simplifies the disassembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model.

[0016] Figure 2 It is a side structural diagram of the utility model.

[0017] Figure 3 This is a schematic diagram of the installation structure of the utility model.

[0018] In the figure: 10, memory alloy wire; 20, connector; 30, connecting cap; 40, limiter; 50, color code; 60, corrugated sleeve; 70, electrical connector; 80, adhesive layer. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1-3 The specific implementation methods of the present utility model are further described in detail.

[0020] like Figure 1-3As shown, the utility model is a memory alloy fastening ring, comprising a memory alloy wire 10, a connector 20 arranged at one end of the memory alloy wire 10 and a connecting cap 30 rotatably arranged at the other end of the memory alloy wire 10, the inner wall of the connecting cap 30 is provided with an internal thread, and the outer wall of the connecting head 20 is provided with an external thread matching the internal thread. Through the arrangement of the internal thread and the external thread, the connecting head 20 can be connected to the connecting cap 30, so that the memory alloy wire 10 forms a closed fastening ring structure. The above is the prior art and will not be elaborated here. It can be understood that since the connecting cap 30 is rotatably matched with one end of the memory alloy wire 10, the fastening ring is prone to loosening due to the rotation of the connecting cap 30 after installation.

[0021] What is different from the prior art is that a limiting portion 40 is fixedly provided on the side of the connecting cap 30. Through the setting of the limiting portion 40, when in use, the corrugated sleeve 60 is first put on the tail of the electrical connector 70, and then the memory alloy wire 10 is surrounded by the corrugated sleeve 60 and the outside of the electrical connector 70, and then the connecting head 20 is inserted into the connecting cap 30. By rotating the connecting cap 30, the outer wall of the connecting head 20 is threadedly connected to the inner wall of the connecting cap 30, and then the memory alloy wire 10 is heated using a hot air gun. After heating, the memory alloy wire 10 automatically shrinks and is fastened to the surface of the corrugated sleeve 60, and the limiting portion 40 will be in close contact with the surface of the corrugated sleeve 60. Through the setting of the limiting portion 40, the rotation of the connecting cap 30 can be limited, thereby effectively preventing the fastening ring from loosening during use.

[0022] In some embodiments, a T-shaped rotating boss 11 is welded and fixed to the connecting end of the memory alloy wire 10 and the connecting cap 30 , and the connecting cap 30 is rotatably mounted on the outside of the T-shaped rotating boss 11 .

[0023] In some embodiments, a color code 50 is provided on the surface of the memory alloy wire 10. The color code 50 is a high-temperature color-changing label. Through the setting of the color code 50, the color of the color code 50 can be observed during the process of heating the fastening ring with a hot air gun. When the color code 50 changes color, heating is stopped.

[0024] In some embodiments, the memory alloy wire 10 is a TiNiNb alloy structure, the TiNiNb alloy has a heating recovery temperature between 165°C and 175°C, and a shrinkage rate of ≥6%.

[0025] It is worth mentioning that in the prior art, when the fastening ring is disassembled, the fastening ring is usually heated within the memory recovery temperature of the fastening ring to soften it by heating, and then it is disassembled using tools such as pliers and wrenches, which is rather troublesome. In order to solve this problem, an adhesive layer 80 is provided between the limiting portion 40 and the connecting cap 30. In some embodiments, the adhesive layer 80 is an AB glue structure layer. When disassembling the fastening ring, a hot air gun can be used to heat the adhesive layer 80. The heated AB glue structure layer will melt. After the adhesive layer 80 melts, a larger gap is created between the fastening ring and the corrugated sleeve 60 and the electrical connector 70, so that the limiting portion 40 can be easily disassembled. After the limiting portion 40 is disassembled, the fastening ring can be removed by rotating the connecting cap 30 and loosening the connecting cap 30 and the connecting head 20, which is convenient for operation.

[0026] In summary, the present invention aims to provide a memory alloy fastening ring, which effectively prevents the fastening ring 40 from loosening due to the rotation of the connecting cap 30 during use by setting a limiting portion 40 on the side of the connecting cap 30 and connecting it with a heat-meltable adhesive layer 80. At the same time, it is easy to disassemble, thereby improving the stability and durability of the fastening ring and simplifying the disassembly process.

[0027] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A memory alloy fastening ring, comprising a memory alloy wire (10), a connector (20) arranged at one end of the memory alloy wire (10), and a connecting cap (30) rotatably arranged at the other end of the memory alloy wire (10), wherein the inner wall of the connecting cap (30) is provided with an internal thread, and the outer wall of the connector (20) is provided with an external thread matching the internal thread, characterized in that: A limiting portion (40) is fixedly provided on the side surface of the connecting cap (30).

2. The memory alloy fastening ring according to claim 1, characterized in that: A T-shaped rotating boss (11) is welded and fixed to the connection end of the memory alloy wire (10) and the connection cap (30), and the connection cap (30) is rotatably mounted on the outside of the T-shaped rotating boss (11).

3. The memory alloy fastening ring according to claim 1, characterized in that: A color mark (50) is provided on the surface of the memory alloy wire (10).

4. The memory alloy fastening ring according to claim 1, characterized in that: The memory alloy wire (10) is a TiNiNb alloy structure.

5. The memory alloy fastening ring according to claim 4, characterized in that: An adhesive layer (80) is provided between the limiting portion (40) and the connecting cap (30).

6. The memory alloy fastening ring according to claim 5, characterized in that: The adhesive layer (80) is an AB adhesive structure layer.

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