Amorphous wire fixing device, amorphous wire assembly and amorphous wire GSI mechanical sensor

Abstract

The present invention discloses an amorphous wire fixing device, which relates to the technical field of amorphous wire GSI mechanical sensors, and includes an elastic support plate, on which a first electrical connection point and a second electrical connection point are provided, the first electrical connection point being capable of being electrically connected to one end of the amorphous wire, and the second electrical connection point being capable of being electrically connected to the other end of the amorphous wire; a first fixing device and a second fixing device are also provided on the elastic support plate, the first fixing device and the second fixing device being used to fix the amorphous wire, and the first fixing device being arranged close to the first electrical connection point, and the second fixing device being arranged close to the second electrical connection point. The present invention also discloses an amorphous wire assembly, comprising an amorphous wire and the above-mentioned amorphous wire fixing device. The present invention also discloses an amorphous wire GSI mechanical sensor, comprising the above-mentioned amorphous wire assembly. The present invention can ensure reliable electrical connection while ensuring reliable fixation of the amorphous wire.

Description

Technical Field

[0001] The present invention relates to the technical field of amorphous wire GSI mechanical sensors, and in particular to an amorphous wire fixing device, an amorphous wire component and an amorphous wire GSI mechanical sensor. Background Art

[0002] In amorphous wire GSI (Giant Stress-Impedance) force sensor products, soldering, spot welding, ultrasonic pressure welding, and other fixing methods are currently commonly used to fix the two ends of the amorphous wire and achieve electrical connection of the amorphous wire. However, these fixing methods have the following main disadvantages:

[0003] Tin soldering cannot achieve reliable electrical connection because the lead-tin alloy cannot completely penetrate the cobalt and iron in the amorphous wire. When the amorphous wire is under tension, the amorphous wire is easily pulled out from the pad, causing the zero point of the originally calibrated sensor to drift irreversibly, affecting the measurement accuracy of the sensor and even causing the sensor to fail.

[0004] Although spot welding can achieve reliable electrical connection of amorphous wires, the local heating temperature of the amorphous wires during spot welding far exceeds the maximum temperature that the amorphous wires can withstand to remain amorphous, causing the amorphous wires to locally crystallize at the spot welding points, increasing their mechanical stiffness and becoming brittle. When subjected to mechanical force, they are very likely to break, causing the sensor to fail.

[0005] Although ultrasonic welding has a low temperature and will not destroy the amorphous alloy structure of the amorphous wire, the amorphous wire cannot be firmly welded to the copper substrate. Although the amorphous wire can be clamped by two pieces of copper for ultrasonic welding, so that the two pieces of copper press the amorphous wire to achieve electrical connection, it still cannot solve the problem that the amorphous wire is easily pulled out from the copper pad when the amorphous wire is under stress.

[0006] In summary, in current amorphous wire GSI mechanical sensor products, the fixation and electrical connection of the amorphous wire are usually achieved only through welding, which makes it difficult to ensure the reliability of the fixation and electrical connection. Summary of the Invention

[0007] The purpose of the present invention is to provide an amorphous wire fixing device, an amorphous wire assembly and an amorphous wire GSI mechanical sensor to solve the problems existing in the above-mentioned prior art, and to ensure reliable electrical connection while ensuring reliable fixation of the amorphous wire.

[0008] To achieve the above object, the present invention provides the following solutions:

[0009] The present invention provides an amorphous wire fixing device, including an elastic support plate, on which a first electrical connection point and a second electrical connection point are provided, the first electrical connection point can be electrically connected to one end of the amorphous wire, and the second electrical connection point can be electrically connected to the other end of the amorphous wire; the elastic support plate is also provided with a first fixing device and a second fixing device, the first fixing device and the second fixing device are used to fix the amorphous wire, and the first fixing device and the second fixing device are both located between the first electrical connection point and the second electrical connection point, the first fixing device is arranged close to the first electrical connection point, and the second fixing device is arranged close to the second electrical connection point.

[0010] Preferably, the first fixing device and / or the second fixing device are connected to an adjusting device, and the adjusting device can drive the first fixing device and / or the second fixing device to move to tension the part of the amorphous wire located between the first fixing device and the second fixing device.

[0011] Preferably, the first electrical connection point and the second electrical connection point are both welding points.

[0012] Preferably, the welding point is a low-temperature welding point, and the amorphous wire can be soldered at the low-temperature welding point at a low temperature.

[0013] Preferably, the amorphous wire fixing device further includes a support plate fixing device, and one end of the elastic support plate is fixed on the support plate fixing device.

[0014] Preferably, the amorphous wire fixing device also includes a sensor force connection device, which is arranged on one end of the elastic support plate away from the support plate fixing device, and the elastic support plate can bend and deform under the force of the sensor force connection device.

[0015] The present invention also provides an amorphous wire assembly, comprising an amorphous wire and the amorphous wire fixing device as described above, wherein a first fixing device fixes the amorphous wire, and makes the length of the amorphous wire reserved between the first fixing device and the first electrical connection point greater than the distance between the first fixing device and the first electrical connection point; a second fixing device fixes the amorphous wire, and the length of the amorphous wire reserved between the second fixing device and the second electrical connection point is greater than the distance between the second fixing device and the second electrical connection point; the amorphous wire between the first fixing device and the second fixing device is in a pre-tightened state.

[0016] The present invention also provides an amorphous wire assembly, comprising an amorphous wire and the amorphous wire fixing device as described above, wherein one end of the amorphous wire is low-temperature soldered to the first electrical connection point, and the other end of the amorphous wire is low-temperature soldered to the second electrical connection point, and both ends of the amorphous wire are plated with a welding coating to facilitate low-temperature soldering.

[0017] Preferably, the solder coating is a copper coating, a gold coating, a silver coating, a tin coating, a lead coating or an alloy coating;

[0018] The welding coating is a coating formed on the amorphous wire by electroplating, evaporation or sputtering.

[0019] The present invention also provides an amorphous wire GSI mechanical sensor, comprising the amorphous wire component as described above.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The present invention arranges a first fixing device and a second fixing device between the first electrical connection point and the second electrical connection point, which are used to fix the amorphous wire, separate the fixation and electrical connection of the amorphous wire, and make the length of the amorphous wire reserved between the first fixing device and the first electrical connection point greater than the distance between the first fixing device and the first electrical connection point, and be in a bent state, and make the length of the amorphous wire reserved between the second fixing device and the second electrical connection point greater than the distance between the second fixing device and the second electrical connection point, and be in a bent state, that is, only the amorphous wire segment located between the first fixing device and the second fixing device is subjected to force, and the amorphous wire segment located between the first fixing device and the first electrical connection point and between the second fixing device and the second electrical connection point is not subjected to force. While ensuring that the amorphous wire is reliably fixed, the first electrical connection point and the second electrical connection point are not affected by external forces, thereby ensuring reliable electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the structure of the amorphous wire fixing device in an embodiment of the present invention.

[0024] In the figure: 1-amorphous wire; 2-first electrical connection point; 3-first fixing device; 4-second fixing device; 5-second electrical connection point; 6-elastic support plate; 7-support plate fixing device; 8-sensor force connection device. DETAILED DESCRIPTION

[0025] 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.

[0026] The purpose of the present invention is to provide an amorphous wire fixing device, an amorphous wire assembly and an amorphous wire GSI mechanical sensor to solve the problems existing in the above-mentioned prior art, and to ensure reliable electrical connection while ensuring reliable fixation of the amorphous wire.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment provides an amorphous wire fixing device, including an elastic support plate 6, on which a first electrical connection point 2 and a second electrical connection point 5 are provided, the first electrical connection point 2 can be electrically connected to one end of the amorphous wire 1, and the second electrical connection point 5 can be electrically connected to the other end of the amorphous wire 1; the elastic support plate 6 is also provided with a first fixing device 3 and a second fixing device 4, the first fixing device 3 and the second fixing device 4 are used to fix the amorphous wire 1, and the first fixing device 3 and the second fixing device 4 are both located between the first electrical connection point 2 and the second electrical connection point 5, the first fixing device 3 is arranged close to the first electrical connection point 2, and the second fixing device 4 is arranged close to the second electrical connection point 5, one end of the amorphous wire 1 passes through the first fixing device 3 to be electrically connected to the first electrical connection point 2, and the other end passes through the second fixing device 4 to be electrically connected to the second electrical connection point 5.

[0030] Among them, the length of the amorphous wire 1 reserved between the first fixing device 3 and the first electrical connection point 2 is greater than the distance between the first fixing device 3 and the first electrical connection point 2, and is in a larger bending state; and the length of the amorphous wire 1 reserved between the second fixing device 4 and the second electrical connection point 5 is greater than the distance between the second fixing device 4 and the second electrical connection point 5, and is in a larger bending state; and the amorphous wire 1 between the first fixing device 3 and the second fixing device 4 is in a pre-tightened state; so that in the process of the elastic support plate 6 being bent under force, only the amorphous wire segment between the first fixing device 3 and the second fixing device 4 is subjected to force, and the amorphous wire segment between the first fixing device 3 and the first electrical connection point 2 and between the second fixing device 4 and the second electrical connection point 5 is not subjected to force. While ensuring that the amorphous wire 1 is reliably fixed, the first electrical connection point 2 and the second electrical connection point 5 are not affected by external forces, thereby ensuring reliable electrical connection.

[0031] In this embodiment, the first fixing device 3 and / or the second fixing device 4 may also be connected to an adjusting device, which can drive the first fixing device 3 and / or the second fixing device 4 to move, so as to tension the part of the amorphous wire 1 located between the first fixing device 3 and the second fixing device 4, thereby realizing pre-tensioning of the amorphous wire 1.

[0032] As a preferred embodiment, in this embodiment, the first fixing device 3 is fixed on the elastic support plate 6, and the second fixing device 4 is connected to an adjusting device, which drives the second fixing device 4 to move through the adjusting device, and can adjust the distance between the second fixing device 4 and the first fixing device 3 to achieve pre-tensioning of the amorphous wire 1; wherein, the adjusting device can be selected according to specific work needs, such as selecting a linear motor or a screw nut structure.

[0033] In this embodiment, the first fixing device 3 and the second fixing device 4 can also be selected according to specific work needs. For example, the first fixing device 3 and the second fixing device 4 can both include a fixing block, which is provided with a through hole for the amorphous wire 1 to pass through, and a locking bolt is installed on the fixing block, and the amorphous wire 1 is fixed by tightening the locking bolt.

[0034] In this embodiment, the first electrical connection point 2 and the second electrical connection point 5 can both be welding points, or a combination of welding points and copper sheets, preferably welding points; more preferably, the welding points are low-temperature welding points, and the amorphous wire 1 can be soldered at the low-temperature welding points at low temperature.

[0035] In this embodiment, the amorphous wire fixing device also includes a support plate fixing device 7, and one end of the elastic support plate 6 is fixed on the support plate fixing device 7; further, the amorphous wire fixing device also includes a sensor force connection device 8, and the sensor force connection device 8 is arranged on the elastic support plate 6 away from one end of the support plate fixing device 7, and can withstand external force. The elastic support plate 6 can bend and deform under the force of the sensor force connection device 8.

[0036] In this embodiment, sufficient length is left at both ends of the amorphous wire 1 to ensure that low-temperature soldering can be performed. After the amorphous wire 1 is fixed to the elastic support plate 6 by the first fixing device 3 and the second fixing device 4, the amorphous wire 1 is tightened to achieve pre-tensioning by adjusting the position of the second fixing device 4, and then the reserved two ends of the amorphous wire 1 are welded to the elastic support plate 6 by low-temperature soldering to form the first electrical connection point 2 and the second electrical connection point 5, ensuring that the amorphous wire 1 between the first fixing device 3 and the first electrical connection point 2 and between the second fixing device 4 and the second electrical connection point 5 has a large bend, and the first electrical connection point 2 and the second electrical connection point 5 will not be tightened due to the bending of the elastic support plate 6, causing stress on the first electrical connection point 2 and the second electrical connection point 5;

[0037] When the sensor force-bearing connection device 8 is pressed or pulled, the elastic support plate 6 is bent due to the fixation of the support plate fixing device 7 and the force of the sensor force-bearing connection device 8. The first fixing device 3 and the second fixing device 4 produce relative displacement following the bending deformation of the elastic support plate 6, thereby changing the tension of the amorphous wire 1. The amorphous wire GSI effect signal is output from the first electrical connection point 2 and the second electrical connection point 5, thereby realizing the collection of the mechanical signal of the amorphous wire GSI mechanical sensor.

[0038] In this embodiment, it should be noted that the elastic support plate 6, the support plate fixing device 7 and the sensor force connection device 8 are all mature existing technologies in this field and can be selected as needed, so they will not be described in detail in this embodiment.

[0039] This embodiment also provides an amorphous wire assembly, including an amorphous wire 1 and the amorphous wire fixing device as described above; wherein, one end of the amorphous wire 1 is low-temperature soldered to the first electrical connection point 2, and the other end of the amorphous wire 1 is low-temperature soldered to the second electrical connection point 5, and both ends of the amorphous wire 1 are plated with a welding coating to facilitate low-temperature soldering.

[0040] In this embodiment, the welding coating can be a copper coating, a gold coating, a silver coating, a tin coating, a lead coating, etc., or can be an alloy coating such as a tin alloy coating, preferably a copper coating; the welding coating can be a coating provided on the amorphous wire 1 by electroplating, evaporation or sputtering, preferably an electroplating coating.

[0041] This embodiment also provides an amorphous wire GSI mechanical sensor, including the amorphous wire component as described above.

[0042] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. An amorphous wire fixing device, comprising an elastic support plate, wherein a first electrical connection point and a second electrical connection point are provided on the elastic support plate, wherein the first electrical connection point can be electrically connected to one end of the amorphous wire, and the second electrical connection point can be electrically connected to the other end of the amorphous wire; characterized in that: A first fixing device and a second fixing device are also provided on the elastic support plate, and the first fixing device and the second fixing device are used to fix the amorphous wire, and the first fixing device and the second fixing device are both located between the first electrical connection point and the second electrical connection point, the first fixing device is arranged close to the first electrical connection point, and the second fixing device is arranged close to the second electrical connection point, one end of the amorphous wire passes through the first fixing device and is electrically connected to the first electrical connection point, and the other end passes through the second fixing device and is electrically connected to the second electrical connection point; and the length of the amorphous wire reserved between the first fixing device and the first electrical connection point is greater than the distance between the first fixing device and the first electrical connection point; the length of the amorphous wire reserved between the second fixing device and the second electrical connection point is greater than the distance between the second fixing device and the second electrical connection point; the amorphous wire between the first fixing device and the second fixing device is in a pre-tightened state.

2. The amorphous wire fixing device according to claim 1, characterized in that: The first fixing device and / or the second fixing device are connected to an adjusting device, and the adjusting device can drive the first fixing device and / or the second fixing device to move to tension the portion of the amorphous wire located between the first fixing device and the second fixing device.

3. The amorphous wire fixing device according to claim 1, characterized in that: The first electrical connection point and the second electrical connection point are both welding points.

4. The amorphous wire fixing device according to claim 3, characterized in that: The welding point is a low-temperature welding point, and the amorphous wire can be soldered at the low-temperature welding point at a low temperature.

5. The amorphous wire fixing device according to claim 1, characterized in that: The amorphous wire fixing device further comprises a support plate fixing device, and one end of the elastic support plate is fixed on the support plate fixing device.

6. The amorphous wire fixing device according to claim 5, characterized in that: The amorphous wire fixing device also includes a sensor force connection device, which is arranged on one end of the elastic support plate away from the support plate fixing device. The elastic support plate can bend and deform under the force of the sensor force connection device.

7. An amorphous wire assembly, characterized in that: comprising an amorphous wire and the amorphous wire fixing device according to any one of claims 1 to 6, wherein a first fixing device fixes the amorphous wire, and a length of the amorphous wire reserved between the first fixing device and the first electrical connection point is greater than a distance between the first fixing device and the first electrical connection point; The second fixing device fixes the amorphous wire, and the length of the amorphous wire reserved between the second fixing device and the second electrical connection point is greater than the distance between the second fixing device and the second electrical connection point; the amorphous wire between the first fixing device and the second fixing device is in a pre-tightened state.

8. An amorphous wire assembly, characterized in that: It includes an amorphous wire and an amorphous wire fixing device as described in claim 4, one end of the amorphous wire is low-temperature soldered to the first electrical connection point, the other end of the amorphous wire is low-temperature soldered to the second electrical connection point, and both ends of the amorphous wire are plated with a welding coating to facilitate low-temperature soldering.

9. The amorphous wire assembly according to claim 8, characterized in that: The soldering coating is a copper coating, a gold coating, a silver coating, a tin coating, a lead coating or an alloy coating; The welding coating is a coating formed on the amorphous wire by electroplating, evaporation or sputtering.

10. An amorphous wire GSI mechanical sensor, characterized by: Comprising the amorphous wire component as described in any one of claims 7-9.

Images