A memory alloy component driven holding relay

Abstract

The present invention discloses a latching relay driven by a memory alloy component, comprising a housing, a static contact assembly and a moving contact assembly arranged on the housing, and a contact switch connected to the moving contact assembly. One end of the contact switch is connected to the moving contact assembly, and the other end is provided with a moving contact corresponding to the static contact of the static contact assembly. A memory alloy component mechanism for driving the contact switch is also provided in the housing. The memory alloy component mechanism includes a swing arm component connected to the contact switch and a shape memory alloy component for driving the swing arm component to complete two swinging actions. The shape memory alloy component is connected to a power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and in particular to a holding relay driven by a memory alloy component. Background Art

[0002] With the continuous development of smart meter technology and its increasingly extensive functions, magnetic latching relays are widely used in many smart meters due to their low cost, good performance and high reliability, especially in the on-off control of energy meters.

[0003] Traditional magnetic latching relays used in smart energy meters have an unreasonable internal structure and pose safety risks. Therefore, how to provide a magnetic latching relay with a more reasonable structure, easier assembly, higher safety, and lower cost is a technical problem that needs to be solved.

[0004] Currently, Chinese patent authorization announcement number CN102983043B discloses a magnetic latching relay for smart meters. However, the relay still requires components such as coils and magnets, resulting in a complex structure and increased production costs. Summary of the Invention

[0005] The object of the present invention is to provide a latching relay driven by a memory alloy component to solve the above-mentioned deficiencies and defects of the prior art.

[0006] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0007] A latching relay driven by a memory alloy component comprises a housing, a static contact assembly and a moving contact assembly arranged on the housing, and a contact switch connected to the moving contact assembly, wherein one end of the contact switch is connected to the moving contact assembly, and the other end is provided with a moving contact corresponding to the static contact of the static contact assembly. The invention is characterized in that a memory alloy component mechanism for driving the contact switch is also provided in the housing, and the memory alloy component mechanism includes a swing arm component connected to the contact switch and a shape memory alloy component for driving the swing arm component to complete two swinging actions, and the shape memory alloy component is connected to a power supply.

[0008] In a preferred embodiment of the present invention, the swing arm component includes an action arm and a swing arm, one end of the action arm is connected to the contact switch, and the other end is connected to the swing arm, the swing arm is rotatably arranged in the shell, and the shape memory alloy component includes a first shape memory alloy component and a second shape memory alloy component respectively connected to the swing arm, the first shape memory alloy component and the second shape memory alloy component are respectively connected to a power supply, and the shell is also provided with a first limiting portion and a second limiting portion that cooperate with the swing arm or the action arm.

[0009] In a preferred embodiment of the present invention, the swing arm is a straight arm structure, one end of the swing arm is connected to the action arm, and the other end is connected to the first ends of the first shape memory alloy component and the second shape memory alloy component respectively, the first ends of the first shape memory alloy component and the second shape memory alloy component are also connected to one end of an electric wire, the other end of the electric wire is connected to the negative pole of the first power supply and the second power supply, the second ends of the first shape memory alloy component and the second shape memory alloy component are connected to the positive pole of the first power supply and the second power supply respectively, and the action arm is provided with a limiting boss that cooperates with the first limiting portion and the second limiting portion.

[0010] In a preferred embodiment of the present invention, the swing arm is a cross structure, the first end of the swing arm is connected to the action arm, the second end and the third end of the swing arm are respectively connected to the second end of the first shape memory alloy component and the second shape memory alloy component, and the second ends of the first shape memory alloy component and the second shape memory alloy component are respectively connected to the positive poles of the first power supply and the second power supply, the first ends of the first shape memory alloy component and the second shape memory alloy component are also connected to one end of an electric wire, the other end of the electric wire is connected to the negative poles of the first power supply and the second power supply, and the fourth end of the swing arm is provided with a limiting boss that cooperates with the first limiting portion and the second limiting portion.

[0011] In a preferred embodiment of the present invention, the swing arm is a straight arm structure, one end of the swing arm is connected to the action arm, and one end of the swing arm is respectively connected to the first end of the first shape memory alloy component and the second shape memory alloy component, the first end of the first shape memory alloy component and the second shape memory alloy component are also connected to one end of an electric wire, the other end of the electric wire is connected to the negative pole of the first power supply and the second power supply, the second end of the first shape memory alloy component and the second shape memory alloy component are respectively connected to the positive pole of the first power supply and the second power supply, and the other end of the swing arm is provided with a limiting boss that cooperates with the first limiting portion and the second limiting portion.

[0012] In a preferred embodiment of the present invention, the swing arm is a straight arm structure, one end of the swing arm is connected to the action arm, and one end of the swing arm is respectively connected to the first end of the first shape memory alloy component and the second shape memory alloy component, the first end of the first shape memory alloy component and the second shape memory alloy component are also connected to one end of an electric wire, the other end of the electric wire is connected to the negative pole of the first power supply and the second power supply, the second end of the first shape memory alloy component and the second shape memory alloy component are respectively connected to the positive pole of the first power supply and the second power supply, the other end of the swing arm is provided with a limiting boss that cooperates with the first limiting part and the second limiting part, the first limiting part and the second limiting part are respectively two contact surfaces of a movable boss that cooperate with the limiting boss, and the movable boss is floatingly arranged in the shell through an elastic reset part.

[0013] In a preferred embodiment of the present invention, the swing arm is a straight arm structure, one end of the swing arm is connected to the action arm, and the other end is connected to the first end of the first shape memory alloy component and the second shape memory alloy component respectively, the first end of the first shape memory alloy component and the second shape memory alloy component are also connected to one end of an electric wire, the other end of the electric wire is connected to the negative pole of the first power supply and the second power supply, the second end of the first shape memory alloy component and the second shape memory alloy component are connected to the positive pole of the first power supply and the second power supply respectively, and the action arm is provided with a limiting boss that cooperates with the first limiting part and the second limiting part, the first limiting part and the second limiting part are respectively two contact surfaces of a movable boss that cooperate with the limiting boss, and the movable boss is floatingly arranged in the shell through an elastic reset part.

[0014] In a preferred embodiment of the present invention, the contact switch is a metal conductive sheet with an elastic arc portion provided in the middle.

[0015] In a preferred embodiment of the present invention, the shape memory alloy component realizes steering and routing via a winding wheel arranged in the housing.

[0016] Due to the adoption of the above technical solution, the present invention utilizes a shape memory alloy component to drive the contact switch action to achieve the purpose of controlling the on-off state between the static contact assembly and the moving contact assembly. Moreover, the shape memory alloy component can enable the swing arm component to complete two actions, namely, it can always keep the static contact assembly and the moving contact assembly in a conductive state, and it can also always keep the static contact assembly and the moving contact assembly in a disconnected state. The structure is simple and the production cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 or the description of the prior art. 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.

[0018] Figure 1 It is a structural stereogram of a holding type relay driven by a memory alloy component of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in the disconnected state according to the first embodiment of the present invention.

[0020] Figure 3 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in the conductive state according to embodiment 1 of the present invention.

[0021] Figure 4 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in the disconnected state according to the second embodiment of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in embodiment 2 of the present invention in a conducting state.

[0023] Figure 6 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in the disconnected state according to the third embodiment of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in embodiment 3 of the present invention in a conducting state.

[0025] Figure 8 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in the disconnected state according to the fourth embodiment of the present invention.

[0026] Figure 9 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in embodiment 4 of the present invention in a conducting state.

[0027] Figure 10 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in the disconnected state according to embodiment 5 of the present invention.

[0028] Figure 11 It is a structural schematic diagram of the static contact assembly and the moving contact assembly in embodiment 6 of the present invention in a conducting state. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below.

[0030] Example 1

[0031] See also Figures 1 to 3 The illustrated embodiment of a latching relay driven by a memory alloy component includes a housing 100, a stationary contact assembly 200 and a moving contact assembly 300 disposed on the housing 100, and a contact switch 400 connected to the moving contact assembly 300. One end 401 of the contact switch 400 is connected to the moving contact assembly 300, and the other end 402 is provided with a moving contact 410 corresponding to the stationary contact 201 of the stationary contact assembly 200. Also disposed within the housing 100 is a memory alloy component mechanism for driving the contact switch 400. The memory alloy component mechanism includes a swing arm component 500 connected to the contact switch 400 and a shape memory alloy component for driving the swing arm component 500 to complete two swinging motions. The shape memory alloy component is connected to a power source.

[0032] The swing arm assembly 500 in this embodiment includes an operating arm 510 and a swing arm 520. One end of the operating arm 510 is connected to the contact switch 400, and the other end is connected to the swing arm 520. The swing arm 520 is rotatably disposed within the housing 100 via a pin 600. Also disposed within the housing 100 are a first limiting portion 710 and a second limiting portion 720 that cooperate with the swing arm 520 or the operating arm 510. In this embodiment, the first limiting portion 710 and the second limiting portion 720 are first limiting grooves and second limiting grooves disposed on a limiting edge 730 within the housing.

[0033] The shape memory alloy components in this embodiment include a first shape memory alloy component 810 and a second shape memory alloy component 820 respectively connected to the swing arm 520. Specifically, the swing arm 520 is a straight arm structure, one end 521 of the swing arm 520 is connected to the action arm 510, and the other end 522 is respectively connected to the first ends of the first shape memory alloy component 810 and the second shape memory alloy component 820. The first ends of the first shape memory alloy component 810 and the second shape memory alloy component 820 are also connected to one end of an electric wire 830. Specifically, the first ends of the first shape memory alloy component 810 and the second shape memory alloy component 820 and one end of the electric wire 830 are commonly connected to a conductive terminal 523. The other end of the wire 830 is connected to the negative electrodes of the first power source 910 and the second power source 920. The second ends of the first shape memory alloy component 810 and the second shape memory alloy component 820 are connected to the positive electrodes of the first power source 910 and the second power source 920, respectively. Specifically, the second ends of the first shape memory alloy component 810 and the second shape memory alloy component 820 are riveted to the copper terminal 102, respectively. The copper terminal 102 is then connected to the positive electrodes of the first power source 910 and the second power source 920. The first power source 910 and the second power source 920 are external power sources. The action arm 510 is provided with a limiting boss 511 that cooperates with the first limiting portion 710 and the second limiting portion 720. The limiting edge 730 has a slight elasticity, so that the limiting boss 511 can overcome its slight elasticity to achieve position switching during the switching process from the first limiting portion 710 to the second limiting portion 720 or from the second limiting portion 720 to the first limiting portion 710.

[0034] The contact switch 400 is a metal conductive sheet with an elastic arc portion 420 in the middle, so that the static contact 201 and the movable contact 410 can be continuously subjected to elastic force when in contact, ensuring good contact between the two.

[0035] The first shape memory alloy component 810 and the second shape memory alloy component 820 are steered and routed via the winding wheel 101 disposed within the housing 100, facilitating layout. The first shape memory alloy component 810 and the second shape memory alloy component 820 are shape memory alloy wires.

[0036] The working principle of this embodiment is as follows:

[0037] When the static contact 201 and the moving contact 410 do not need to be in contact and are conducting, the first power supply 910 and the second power supply 920 do not need to supply power to the first shape memory alloy component 810 and the second shape memory alloy component 820. At this time, the second shape memory alloy component 820 is in a normal length and tightened state, and the first shape memory alloy component 810 is in a normal length and slightly relaxed state. The limiting boss 511 is stuck on the first limiting portion 710. At this time, the state is as follows: Figure 2As shown. When the static contact 201 and the moving contact 410 need to be in contact and conductive, the second power supply 920 supplies power to the second shape memory alloy component 820, and the second shape memory alloy component 820 will be instantly heated up, so that the second shape memory alloy component 820 reaches the phase transition temperature and becomes shorter. When the second shape memory alloy component 820 is energized and shortened, it drives the swing arm 520 to rotate around the pin shaft 600, so that the action arm 510 moves upward, and then drives the other end 402 of the contact switch 400 to move in the direction close to the static contact 201, so that the static contact 201 and the moving contact 410 are in contact and conductive. At this time, the limiting boss 511 is stuck on the second limiting part 720, and the second power supply 920 is powered off. The static contact 201 and the moving contact 410 still remain conductive. After the second shape memory alloy component 820 is powered off, it is in a normal length and tightened state, and the first shape memory alloy component 810 is in a normal length and tightened state. At this time, the state is as shown Figure 3 As shown. When the static contact 201 and the moving contact 410 are connected without contact, the first power supply energizes the first shape memory alloy component 810, and the first shape memory alloy component 810 will get an instantaneous temperature increase, so that the first shape memory alloy component 810 reaches the phase change temperature and becomes shorter. When the first shape memory alloy component 810 is energized and shortened, it drives the swing arm 520 to rotate around the pin shaft 600, so that the action arm 510 moves downward, and then drives the other end 402 of the contact switch 400 to move away from the static contact 201, so that the static contact 201 and the moving contact 410 are separated. At this time, the limiting boss 511 is stuck on the first limiting part 710, and the first power supply 910 is powered off. The static contact 201 and the moving contact 410 still remain in the disconnected state. After the first shape memory alloy component 810 is powered off, it is in a slightly relaxed state at normal length, and the second shape memory alloy component 820 is in a taut state at normal length. At this time, the state is as shown in FIG. Figure 2 By using it in this way, the relay can be kept on or off.

[0038] Example 2

[0039] See also Figure 1 and Figures 4 and 5The illustrated embodiment of a latching relay driven by a memory alloy component includes a housing 100a, a stationary contact assembly 200a and a movable contact assembly 300a disposed on the housing 100a, and a contact switch 400a connected to the movable contact assembly 300a. One end 401a of the contact switch 400a is connected to the movable contact assembly 300a, and the other end 402a is provided with a movable contact 410a corresponding to the stationary contact 201a of the stationary contact assembly 200a. A memory alloy component mechanism for driving the contact switch 400a is also disposed within the housing 100a. The memory alloy component mechanism includes a swing arm component 500a connected to the contact switch 400a and a shape memory alloy component for driving the swing arm component 500a to perform two swinging motions. The shape memory alloy component is connected to a power source.

[0040] The swing arm assembly 500a in this embodiment includes an operating arm 510a and a swing arm 520a. One end of the operating arm 510a is connected to the contact switch 400a, and the other end is connected to the swing arm 520a. The swing arm 520a is rotatably disposed within the housing 100a via a pin 600a. Also disposed within the housing 100a are a first limiting portion 710a and a second limiting portion 720a that cooperate with the swing arm 520a or the operating arm 510a. In this embodiment, the first limiting portion 710a and the second limiting portion 720a are first and second limiting grooves disposed on a limiting edge 730a within the housing.

[0041] The shape memory alloy components in this embodiment include a first shape memory alloy component 810a and a second shape memory alloy component 820a, respectively connected to the swing arm 520a. Specifically, the swing arm 520a has a cross structure, and the first end 521a of the swing arm 520a is connected to the action arm 510a. The second end 524a and the third end 525a of the swing arm 520a are respectively connected to the second ends of the first shape memory alloy component 810a and the second shape memory alloy component 820a. The first ends of the first shape memory alloy component 810a and the second shape memory alloy component 820a are also connected to one end of an electric wire 830a. Specifically, the first ends of the first shape memory alloy component 810a and the second shape memory alloy component 820a and one end of the electric wire 830a are commonly connected to a conductive terminal 523a. The other end of the wire 830a is connected to the negative pole of the first power supply 910a and the second power supply 920a, and the second ends of the first shape memory alloy component 810a and the second shape memory alloy component 820a are respectively connected to the positive pole of the first power supply 910a and the second power supply 920a. Specifically, the second ends of the first shape memory alloy component 810a and the second shape memory alloy component 820a are respectively riveted to the copper terminal 102a on the swing arm 520a, and the copper terminal 102a is then connected to the positive pole of the first power supply 910a and the second power supply 920a. The first power supply 910a and the second power supply 920a are external power supplies. The fourth end 522a of the swing arm 520a is provided with a limiting boss 511a that cooperates with the first limiting portion 710a and the second limiting portion 720a. The limiting edge 730a has slight elasticity, so that the limiting boss 511a can overcome its slight elasticity to achieve position switching during the switching process from the first limiting portion 710a to the second limiting portion 720a or from the second limiting portion 720a to the first limiting portion 710a.

[0042] The contact switch 400a is a metal conductive sheet with an elastic arc portion 420a in the middle, so that the static contact 201a and the movable contact 410a can be continuously subjected to elastic force when in contact, ensuring good contact between the two.

[0043] The first shape memory alloy component 810a and the second shape memory alloy component 820a are steered and routed by a reel 101a disposed within the housing 100a, facilitating layout. The first shape memory alloy component 810a and the second shape memory alloy component 820a are shape memory alloy wires.

[0044] The working principle of this embodiment is as follows:

[0045] When the static contact 201a and the moving contact 410a do not need to be in contact and are conducting, the first power supply 910a and the second power supply 920a do not need to supply power to the first shape memory alloy component 810a and the second shape memory alloy component 820a. At this time, the first shape memory alloy component 810a is in a normal length and tightened state, and the second shape memory alloy component 820a is in a normal length and slightly relaxed state. The limiting boss 511a is stuck on the first limiting portion 710a. At this time, the state is as follows: Figure 4 When the static contact 201a and the moving contact 410a need to be in contact and conductive, the first power supply 910a energizes the first shape memory alloy component 810a, and the first shape memory alloy component 810a is instantly heated, so that the first shape memory alloy component 810a reaches the phase transition temperature and becomes shorter. When the first shape memory alloy component 810a is energized and shortened, it drives the swing arm 520a to rotate around the pin 600a, causing the action arm 510a to move upward, thereby driving the contact switch 40 0a moves toward the direction close to the static contact 201a, so that the static contact 201a and the movable contact 410a are in contact and conductive. At this time, the limiting boss 511a is stuck on the second limiting portion 720a, and the first power supply 910a is powered off. The static contact 201a and the movable contact 410a still remain conductive. After the first shape memory alloy component 810a is powered off, it is in a slightly relaxed state at normal length, and the second shape memory alloy component 820a is in a taut state at normal length. At this time, the state is as follows: Figure 5 When the static contact 201a and the movable contact 410a are connected without contact, the second power supply 920a energizes the second shape memory alloy component 820a, and the second shape memory alloy component 820a is instantly heated, so that the second shape memory alloy component 820a reaches the phase transition temperature and becomes shorter. When the second shape memory alloy component 820a is energized and shortened, it drives the swing arm 520a to rotate around the pin 600a, causing the action arm 510a to move downward, thereby driving the contact switch 40 0a moves in a direction away from the static contact 201a, so that the static contact 201a and the movable contact 410a are separated. At this time, the limiting boss 511a is stuck on the first limiting portion 710a, and the second power supply 920a is powered off. The static contact 201a and the movable contact 410a are still kept in the isolation state. After the second shape memory alloy component 820a is powered off, it is in a normal length and slightly relaxed state, and the first shape memory alloy component 810a is in a normal length and tightened state. At this time, the state is as follows: Figure 4 By using it in this way, the relay can be kept on or off.

[0046] Example 3

[0047] See also Figure 1 and Figures 6 and 7The illustrated embodiment of a latching relay driven by a memory alloy component includes a housing 100b, a stationary contact assembly 200b and a moving contact assembly 300b disposed on the housing 100b, and a contact switch 400b connected to the moving contact assembly 300b. One end 401b of the contact switch 400b is connected to the moving contact assembly 300b, and the other end 402b is provided with a moving contact 410b corresponding to the stationary contact 201b of the stationary contact assembly 200b. A memory alloy component mechanism for driving the contact switch 400b is also disposed within the housing 100b. The memory alloy component mechanism includes a swing arm 500b connected to the contact switch 400b and a shape memory alloy component for driving the swing arm 500b to perform two swinging motions. The shape memory alloy component is connected to a power source.

[0048] The swing arm assembly 500b in this embodiment includes an operating arm 510b and a swing arm 520b. One end of the operating arm 510b is connected to the contact switch 400b, and the other end is connected to the swing arm 520b. The swing arm 520b is rotatably disposed within the housing 100b via a pin 600b. Also disposed within the housing 100b are a first limiting portion 710b and a second limiting portion 720b that cooperate with the swing arm 520b or the operating arm 510b. In this embodiment, the first limiting portion 710b and the second limiting portion 720b are first and second limiting grooves disposed on a limiting edge 730b within the housing.

[0049] The shape memory alloy components in this embodiment include a first shape memory alloy component 810b and a second shape memory alloy component 820b respectively connected to the swing arm 520b. Specifically, the swing arm 520b is a straight arm structure. The first end 521b of the swing arm 520b is connected to the action arm 510b, and the first end 521b of the swing arm 520b is respectively connected to the first ends of the first shape memory alloy component 810b and the second shape memory alloy component 820b. The first ends of the first shape memory alloy component 810b and the second shape memory alloy component 820b are also connected to one end of an electric wire 830b. Specifically, the first ends of the first shape memory alloy component 810b and the second shape memory alloy component 820b and one end of the electric wire 830b are commonly connected to a conductive terminal 523b on the swing arm 520b. The other end of the wire 830b is connected to the negative pole of the first power supply 910b and the second power supply 920b, and the second ends of the first shape memory alloy component 810b and the second shape memory alloy component 820b are respectively connected to the positive pole of the first power supply 910b and the second power supply 920b. Specifically, the second ends of the first shape memory alloy component 810b and the second shape memory alloy component 820b are respectively riveted to the copper terminal 102b in the shell 100b, and the copper terminal 102b is then connected to the positive pole of the first power supply 910b and the second power supply 920b. The first power supply 910b and the second power supply 920b are external power supplies. The second end 522b of the swing arm 520b is provided with a limiting boss 511b that cooperates with the first limiting part 710b and the second limiting part 720b. The limiting edge 730b has slight elasticity, so that the limiting boss 511b can overcome its slight elasticity to achieve position switching during the switching process from the first limiting part 710b to the second limiting part 720b or from the second limiting part 720b to the first limiting part 710b.

[0050] The contact switch 400b is a metal conductive sheet with an elastic arc portion 420b in the middle, so that the static contact 201b and the moving contact 410b can be continuously subjected to elastic force when in contact, ensuring good contact between the two.

[0051] The first shape memory alloy component 810b and the second shape memory alloy component 820b are steered and routed by a reel 101b disposed within the housing 100b, facilitating layout. The first shape memory alloy component 810b and the second shape memory alloy component 820b are shape memory alloy wires.

[0052] The working principle of this embodiment is as follows:

[0053] When the static contact 201b and the moving contact 410b do not need to be in contact and are conducting, the first power supply 910b and the second power supply 920b do not need to supply power to the first shape memory alloy component 810b and the second shape memory alloy component 820b. At this time, the first shape memory alloy component 810b is in a normal length and tightened state, and the second shape memory alloy component 820b is in a normal length and slightly relaxed state. The limiting boss 511b is stuck on the first limiting portion 710b. At this time, the state is as follows: Figure 6 When the static contact 201b and the moving contact 410b need to be in contact and conductive, the first power supply 910b energizes the first shape memory alloy component 810b, and the first shape memory alloy component 810b will be instantly heated up, so that the first shape memory alloy component 810b reaches the phase transition temperature and becomes shorter. When the first shape memory alloy component 810b is energized and shortened, it drives the swing arm 520b to rotate around the pin 600b, causing the action arm 510b to move upward, thereby driving the contact switch 40 0b moves toward the direction close to the static contact 201b, so that the static contact 201b and the movable contact 410b are in contact and conductive, and at this time the limiting boss 511b is stuck on the second limiting portion 720b, the first power supply 910b is powered off, the static contact 201b and the movable contact 410b still remain conductive, the first shape memory alloy component 810b is in a normal length and slightly relaxed state after the power is turned off, and the second shape memory alloy component 820b is in a normal length and tightened state. At this time, the state is as follows: Figure 7 When the static contact 201b and the movable contact 410b are connected without contact, the second power supply 920b energizes the second shape memory alloy component 820b, and the second shape memory alloy component 820b is instantly heated, so that the second shape memory alloy component 820b reaches the phase transition temperature and becomes shorter. When the second shape memory alloy component 820b is energized and shortened, it drives the swing arm 520b to rotate around the pin 600b, causing the action arm 510b to move downward, thereby driving the contact switch 40 0b moves in a direction away from the static contact 201b, so that the static contact 201b and the movable contact 410b are separated. At this time, the limiting boss 511b is stuck on the first limiting portion 710b, and the second power supply 920b is powered off. The static contact 201b and the movable contact 410b are still kept in the isolation state. After the second shape memory alloy component 820b is powered off, it is in a normal length and slightly relaxed state, and the first shape memory alloy component 810b is in a normal length and tightened state. At this time, the state is as follows: Figure 6 By using it in this way, the relay can be kept on or off.

[0054] Example 4

[0055] See also Figure 1 and Figures 8 and 9The illustrated embodiment of a latching relay driven by a memory alloy component includes a housing 100c, a stationary contact assembly 200c and a movable contact assembly 300c disposed on the housing 100c, and a contact switch 400c connected to the movable contact assembly 300c. One end 401c of the contact switch 400c is connected to the movable contact assembly 300c, and the other end 402c is provided with a movable contact 410c corresponding to the stationary contact 201c of the stationary contact assembly 200c. Also disposed within the housing 100c is a memory alloy component mechanism for actuating the contact switch 400c. The memory alloy component mechanism includes a swing arm 500c connected to the contact switch 400c and a shape memory alloy component for driving the swing arm 500c to perform two swinging motions. The shape memory alloy component is connected to a power source.

[0056] The swing arm assembly 500c in this embodiment includes an operating arm 510c and a swing arm 520c. One end of the operating arm 510c is connected to the contact switch 400c, and the other end is connected to the swing arm 520c. The swing arm 520c is rotatably disposed within the housing 100c via a pin 600c. The housing 100c also includes a first stopper 710c and a second stopper 720c that cooperate with the swing arm 520c or the operating arm 510c.

[0057] The shape memory alloy components in this embodiment include a first shape memory alloy component 810c and a second shape memory alloy component 820c respectively connected to the swing arm 520c. Specifically, the swing arm 520c is a straight arm structure. The first end 521c of the swing arm 520c is connected to the action arm 510c, and the first end 521c of the swing arm 520c is respectively connected to the first ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c. The first ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c are also connected to one end of an electric wire 830c. Specifically, the first ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c and one end of the electric wire 830c are commonly connected to a conductive terminal 523c on the swing arm 520c. The other end of the wire 830c is connected to the negative pole of the first power supply 910c and the second power supply 920c, and the second ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c are respectively connected to the positive pole of the first power supply 910c and the second power supply 920c. Specifically, the second ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c are respectively riveted to the copper terminal 102c in the shell 100c, and the copper terminal 102c is then connected to the positive pole of the first power supply 910c and the second power supply 920c. The first power supply 910c and the second power supply 920c are external power supplies. The second end 522c of the swing arm 520c is provided with a limiting boss 511c that cooperates with the first limiting portion 710c and the second limiting portion 720c. The first limiting portion 710c and the second limiting portion 720c respectively serve as two contact surfaces for a movable boss 730c that cooperate with the limiting boss. The movable boss 730c is floatingly disposed within the housing 100c via an elastic return member 740c. Due to the floating configuration of the movable boss 730c, the limiting boss 511c can overcome its elastic force and switch positions during the switching process from the first limiting portion 710c to the second limiting portion 720c, or from the second limiting portion 720c to the first limiting portion 710c.

[0058] The contact switch 400c is a metal conductive sheet with an elastic arc portion 420c in the middle, so that the static contact 201c and the moving contact 410c can be continuously subjected to elastic force when in contact, ensuring good contact between the two.

[0059] The first shape memory alloy component 810c and the second shape memory alloy component 820c are steered and routed via a reel 101c disposed within the housing 100c, facilitating layout. The first shape memory alloy component 810c and the second shape memory alloy component 820c are shape memory alloy wires.

[0060] The working principle of this embodiment is as follows:

[0061] When the static contact 201c and the moving contact 410c are not in contact and are conducting, the first power supply 910c and the second power supply 920c do not need to supply power to the first shape memory alloy component 810c and the second shape memory alloy component 820c. At this time, the first shape memory alloy component 810c is in a normal length and tightened state, and the second shape memory alloy component 820c is in a normal length and slightly relaxed state. The limiting boss 511c is stuck on the first limiting portion 710c. At this time, the state is as follows: Figure 8 When the static contact 201c and the moving contact 410c need to be in contact and conductive, the first power supply 910c energizes the first shape memory alloy component 810c, and the first shape memory alloy component 810c is instantly heated up, so that the first shape memory alloy component 810c reaches the phase transition temperature and becomes shorter. When the first shape memory alloy component 810c is energized and shortened, it drives the swing arm 520c to rotate around the pin 600c, causing the action arm 510c to move upward, thereby driving the contact switch 40 0c moves toward the direction close to the static contact 201c, so that the static contact 201c and the movable contact 410c are in contact and conductive. At this time, the limiting boss 511c is stuck on the second limiting portion 720c, and the first power supply 910c is powered off. The static contact 201c and the movable contact 410c still remain conductive. After the first shape memory alloy component 810c is powered off, it is in a slightly relaxed state at normal length, and the second shape memory alloy component 820c is in a taut state at normal length. At this time, the state is as follows: Figure 9 When the static contact 201c and the movable contact 410c are connected without contact, the second power supply 920c energizes the second shape memory alloy component 820c, and the second shape memory alloy component 820c is instantly heated, so that the second shape memory alloy component 820c reaches the phase transition temperature and becomes shorter. When the second shape memory alloy component 820c is energized and shortened, it drives the swing arm 520c to rotate around the pin 600c, causing the action arm 510c to move downward, thereby driving the contact switch 40 0c moves in a direction away from the static contact 201c, so that the static contact 201c and the movable contact 410c are separated. At this time, the limiting boss 511c is stuck on the first limiting portion 710c, and the second power supply 920c is powered off. The static contact 201c and the movable contact 410c are still kept in the separated state. After the power is off, the second shape memory alloy component 820c is in a slightly relaxed state at normal length. The second shape memory alloy component 820c is in a taut state at normal length. At this time, the state is as follows: Figure 8 By using it in this way, the relay can be kept on or off.

[0062] Example 5

[0063] See also Figure 1 and Figures 10 and 11The illustrated embodiment of a latching relay driven by a memory alloy component includes a housing 100c, a stationary contact assembly 200c and a movable contact assembly 300c disposed on the housing 100c, and a contact switch 400c connected to the movable contact assembly 300c. One end 401c of the contact switch 400c is connected to the movable contact assembly 300c, and the other end 402c is provided with a movable contact 410c corresponding to the stationary contact 201c of the stationary contact assembly 200c. Also disposed within the housing 100c is a memory alloy component mechanism for actuating the contact switch 400c. The memory alloy component mechanism includes a swing arm 500c connected to the contact switch 400c and a shape memory alloy component for driving the swing arm 500c to perform two swinging motions. The shape memory alloy component is connected to a power source.

[0064] The swing arm assembly 500c in this embodiment includes an operating arm 510c and a swing arm 520c. One end of the operating arm 510c is connected to the contact switch 400c, and the other end is connected to the swing arm 520c. The swing arm 520c is rotatably disposed within the housing 100c via a pin 600c. The housing 100c also includes a first stopper 710c and a second stopper 720c that cooperate with the swing arm 520c or the operating arm 510c.

[0065] The shape memory alloy components in this embodiment include a first shape memory alloy component 810c and a second shape memory alloy component 820c respectively connected to the swing arm 520c. Specifically, the swing arm 520c is a straight arm structure. The first end 521c of the swing arm 520c is connected to the action arm 510c, and the first end 521c of the swing arm 520c is respectively connected to the first ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c. The first ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c are also connected to one end of an electric wire 830c. Specifically, the first ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c and one end of the electric wire 830c are commonly connected to a conductive terminal 523c on the swing arm 520c. The other end of the wire 830c is connected to the negative pole of the first power supply 910c and the second power supply 920c, and the second ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c are respectively connected to the positive pole of the first power supply 910c and the second power supply 920c. Specifically, the second ends of the first shape memory alloy component 810c and the second shape memory alloy component 820c are respectively riveted to the copper terminal 102c in the shell 100c, and the copper terminal 102c is then connected to the positive pole of the first power supply 910c and the second power supply 920c. The first power supply 910c and the second power supply 920c are external power supplies. The actuating arm 510d is provided with a limiting boss 511d that cooperates with the first limiting portion 710d and the second limiting portion 720d. The first limiting portion 710d and the second limiting portion 720d each serve as two contact surfaces of a movable boss 730d that cooperate with the limiting boss 511d. The movable boss 730d is floatingly disposed within the housing 100d via an elastic return member 740d. Due to the floating configuration of the movable boss 730c, the limiting boss 511c can overcome its elastic force and switch positions during the switching process from the first limiting portion 710c to the second limiting portion 720c, or from the second limiting portion 720c to the first limiting portion 710c.

[0066] The contact switch 400c is a metal conductive sheet with an elastic arc portion 420c in the middle, so that the static contact 201c and the moving contact 410c can be continuously subjected to elastic force when in contact, ensuring good contact between the two.

[0067] The first shape memory alloy component 810c and the second shape memory alloy component 820c are steered and routed via a reel 101c disposed within the housing 100c, facilitating layout. The first shape memory alloy component 810c and the second shape memory alloy component 820c are shape memory alloy wires.

[0068] The working principle of this embodiment is as follows:

[0069] When the static contact 201c and the moving contact 410c do not need to be in contact and are conducting, the first power supply 910c and the second power supply 920c do not need to supply power to the first shape memory alloy component 810c and the second shape memory alloy component 820c. At this time, the first shape memory alloy component 810c is in a slightly relaxed state at normal length, the second shape memory alloy component 820c is in a tightened state at normal length, and the limiting boss 511c is stuck on the first limiting portion 710c. At this time, the state is as follows: Figure 10 When the static contact 201c and the movable contact 410c need to be in contact and conductive, the second power supply 920c energizes the second shape memory alloy component 820c, and the second shape memory alloy component 820c is instantly heated, so that the second shape memory alloy component 820c reaches the phase transition temperature and becomes shorter. When the second shape memory alloy component 820c is energized and shortened, it drives the swing arm 520c to rotate around the pin 600c, causing the action arm 510c to move upward, thereby driving the contact switch 40 0c moves toward the direction close to the static contact 201c, so that the static contact 201c and the movable contact 410c are in contact and conductive. At this time, the limiting boss 511c is stuck on the second limiting portion 720c, and the second power supply 920c is powered off. The static contact 201c and the movable contact 410c still maintain conductive contact. After the first shape memory alloy component 810c is powered off, it is in a normal length and tightened state, and the second shape memory alloy component 820c is in a normal length and slightly relaxed state. At this time, the state is as follows: Figure 11 When the static contact 201c and the moving contact 410c are connected without contact, the first power supply 910c energizes the first shape memory alloy component 810c, and the first shape memory alloy component 810c is instantly heated, so that the first shape memory alloy component 810c reaches the phase transition temperature and becomes shorter. When the first shape memory alloy component 810c is energized and shortened, it drives the swing arm 520c to rotate around the pin 600c, causing the action arm 510c to move downward, thereby driving the contact switch 40 0c moves in a direction away from the static contact 201c, so that the static contact 201c and the movable contact 410c are separated. At this time, the limiting boss 511c is stuck on the first limiting portion 710c, and the first power supply 910c is powered off. The static contact 201c and the movable contact 410c are still kept in the separated state. After the power is off, the first shape memory alloy component 820c is in a normal length and slightly relaxed state, and the second shape memory alloy component 820c is in a normal length and tightened state. At this time, the state is as follows: Figure 10 By using it in this way, the relay can be kept on or off.

[0070] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A latching relay driven by a memory alloy component, comprising a housing, a stationary contact assembly and a moving contact assembly provided on the housing, and a contact switch connected to the moving contact assembly, wherein one end of the contact switch is connected to the moving contact assembly, and the other end is provided with a moving contact corresponding to the stationary contact of the stationary contact assembly, characterized in that: The housing is further provided with a memory alloy component mechanism for driving the contact switch, the memory alloy component mechanism comprising a swing arm component connected to the contact switch and a shape memory alloy component for driving the swing arm component to complete two swinging actions, the shape memory alloy component being connected to a power source; The swing arm component includes an action arm and a swing arm, one end of the action arm is connected to the contact switch, and the other end is connected to the swing arm, the swing arm is rotatably arranged in the housing, the shape memory alloy component includes a first shape memory alloy component and a second shape memory alloy component respectively connected to the swing arm, the first shape memory alloy component and the second shape memory alloy component are respectively connected to a power supply, and the housing is further provided with a first limiting portion and a second limiting portion that cooperate with the swing arm or the action arm; The swing arm is a straight arm structure, one end of the swing arm is connected to the action arm, and one end of the swing arm is respectively connected to the first end of the first shape memory alloy component and the second shape memory alloy component, the first end of the first shape memory alloy component and the second shape memory alloy component are further connected to one end of an electric wire, the other end of the electric wire is connected to the negative pole of the first power supply and the second power supply, the second end of the first shape memory alloy component and the second shape memory alloy component are respectively connected to the positive pole of the first power supply and the second power supply, the other end of the swing arm is provided with a limiting boss that cooperates with the first limiting part and the second limiting part, the first limiting part and the second limiting part are respectively two contact surfaces of a movable boss that cooperate with the limiting boss, and the movable boss is floatingly arranged in the housing by an elastic reset member; The contact switch is a metal conductive sheet with an elastic arc portion in the middle.

2. A memory alloy component driven latching relay as claimed in claim 1, characterized in that: The shape memory alloy component realizes steering and routing through a winding wheel arranged in the housing.

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