Moving spring assembly and relay

Abstract

The application relates to a moving spring assembly and a relay. The moving spring assembly comprises a conductive and compression spring part, and the conductive sheet is provided with a moving contact. The compression spring part is arranged on the side of the conductive sheet away from the moving contact, and the compression spring part comprises at least two pressure sections, the at least two pressure sections are arranged to be inclined relative to the conductive sheet, part of the pressure sections is in contact with the conductive sheet, or all the pressure sections have a gap with the conductive sheet, so as to facilitate the relay to be attracted under small power consumption, and meanwhile the moving contact and the static contact can be stably contacted. When the moving contact and the static contact are in an overstroke state, all the pressure sections are in abutment with the conductive sheet to increase the pressure of the compression spring part on the conductive sheet, so that the pressure of the compression spring part on the conductive sheet can be increased, the reliability of the contact between the moving contact and the static contact is ensured, the contact resistance is reduced, and the problem of heat generation of the relay is solved.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a moving spring assembly and a relay. Background Technology

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits, where it plays a role in automatic adjustment, safety protection, and circuit switching.

[0003] A typical relay includes a magnetic circuit system, a contact system, and a drive component. The moving iron core of the magnetic circuit system connects to the drive component. The contact system includes a stationary spring assembly and a moving spring assembly. The conductive plate of the moving spring assembly is located on the drive component. The moving iron core moves under the magnetic force generated by the coil, causing the drive component to move the conductive plate, thereby making or separating the moving contact on the conductive plate from the stationary contact on the stationary spring plate. These relays typically use a compression spring to apply preload to the conductive plate to achieve contact overtravel. To address the overheating problem of high-current relays, the pressure of the compression spring on the contact side can be increased to reduce the contact resistance between the stationary and moving contacts. Traditional relays increase the thickness or angle of the compression spring, which requires increasing the attraction force of the magnetic circuit. Increasing the attraction force requires increasing the coil power consumption or the number of turns, resulting in an increase in the size of the magnetically conductive parts. Utility Model Content

[0004] Therefore, it is necessary to provide a moving spring assembly and a relay that can be activated with low power consumption, while also solving the heat generation problem of high-current relays.

[0005] In a first aspect, this application provides a movable spring assembly, comprising:

[0006] A conductive sheet, wherein the conductive sheet is provided with a movable contact, the movable contact being used to contact or separate from a stationary contact; and

[0007] A compression spring component is provided on the side of the conductive sheet away from the stationary contact. The compression spring component includes at least two pressure sections, which are inclined relative to the conductive sheet. All pressure sections are in clearance fit with the conductive sheet, or some pressure sections are in contact with the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, all pressure sections abut against the conductive sheet to increase the pressure of the compression spring component on the conductive sheet.

[0008] In one embodiment, the compression spring component is bifurcated to form a first pressure segment and a second pressure segment, both of which have gaps with the conductive sheet, or the first pressure segment is in contact with the conductive sheet and the second pressure segment has gaps with the conductive sheet; when the moving contact and the stationary contact are in an overtravel state, both the first pressure segment and the second pressure segment abut against the conductive sheet.

[0009] In one embodiment, the first pressure segment has a first end and a second end opposite to each other, the first end being used to connect to a pushing member, the first pressure segment being inclined toward the conductive sheet in the direction from the first end to the second end, and the second end contacting the conductive sheet; or, the second end having a gap with the conductive sheet, and contacting the conductive sheet when the moving contact and the stationary contact are in an overtravel state.

[0010] In one embodiment, the second end is provided with a first arc-shaped segment, which bends away from the conductive sheet and is used to contact the conductive sheet.

[0011] In one embodiment, the second pressure segment has a third end and a fourth end opposite to each other. The third end is used to connect with the pushing member. In the direction from the third end to the fourth end, the second pressure segment is inclined toward the conductive sheet. There is a gap between the fourth end and the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, the fourth end contacts the conductive sheet.

[0012] In one embodiment, the fourth end is provided with a second arc segment, which bends away from the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, the second arc segment contacts the conductive sheet.

[0013] In one embodiment, the pressure of the first pressure segment is less than the pressure of the second pressure segment; and / or, the length of the first pressure segment is greater than the length of the second pressure segment.

[0014] In one embodiment, at least one second pressure segment is provided on both sides of the length direction of the first pressure segment.

[0015] In one embodiment, there are two movable contacts, which are respectively located at both ends of the conductive sheet along its length. The compression spring component is located between the two movable contacts along the length of the conductive sheet, and both ends of the compression spring component along its length are bifurcated to form a first pressure segment and a second pressure segment.

[0016] In one embodiment, the compression spring component includes at least a first compression spring sheet and a second compression spring sheet. The first compression spring sheet includes a third pressure segment, and the second compression spring sheet includes a fourth pressure segment. Both the third and fourth pressure segments have gaps with the conductive sheet. Alternatively, the third pressure segment is in contact with the conductive sheet, and the fourth pressure segment has a gap with the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, both the third and fourth pressure segments abut against the conductive sheet.

[0017] In one embodiment, the third pressure segment has opposing fifth and sixth ends, the fifth end being for connection to a pushing member, the third pressure segment being inclined toward the conductive sheet in the direction from the fifth end to the sixth end, and the sixth end contacting the conductive sheet; or, the sixth end having a gap with the conductive sheet, and contacting the conductive sheet when the moving contact and the stationary contact are in an overtravel state; and / or, the fourth pressure segment has opposing seventh and eighth ends, the seventh end being for connection to a pushing member, the fourth pressure segment being inclined toward the conductive sheet in the direction from the seventh end to the eighth end, the eighth end having a gap with the conductive sheet, and contacting the conductive sheet when the moving contact and the stationary contact are in an overtravel state.

[0018] In one embodiment, the length of the third pressure segment is greater than the length of the fourth pressure segment; and / or, the pressure of the third pressure segment is less than the pressure of the fourth pressure segment.

[0019] In one embodiment, there are two moving contacts, each located at opposite ends of the conductive sheet. The first and second pressure springs are both positioned between the two moving contacts. The first pressure spring further includes a second connecting section for connection to a pushing component. At least one third pressure section is provided between the second connecting section and one of the moving contacts, and at least one third pressure section is provided between the second connecting section and the other moving contact. The second pressure spring also includes a third connecting section for connection to a pushing component. At least one fourth pressure section is provided between the third connecting section and one of the moving contacts, and at least one fourth pressure section is provided between the third connecting section and the other moving contact.

[0020] Secondly, this application also provides a relay, comprising:

[0021] Propulsion components;

[0022] A stationary spring assembly, comprising a stationary spring sheet having a stationary contact; and

[0023] In the aforementioned moving spring assembly, the conductive sheet is disposed on the pushing component, the compression spring component is connected to the pushing component, and the pushing component is used to drive the conductive sheet to move toward or away from the stationary spring assembly, so that the moving contact and the stationary contact come into contact or separate.

[0024] In one embodiment, the pushing component includes a base, a limiting member, and a cover plate. The base is connected to the limiting member, the limiting member has a limiting groove, the conductive sheet is disposed in the limiting groove, the cover plate is disposed on the side of the limiting member opposite to the base and is connected to the limiting member, and the compression spring component is disposed between the conductive sheet and the cover plate and is connected to the cover plate.

[0025] In one embodiment, at least two stationary spring assemblies and at least two moving spring assemblies are provided, and the moving contacts of all the moving spring assemblies are arranged in a one-to-one correspondence with the stationary contacts of all the stationary spring assemblies.

[0026] In the aforementioned relay, when the moving contact and stationary contact initially make contact—that is, when they just touch—part of the pressure section abuts against the conductive plate. This partial pressure section acts as a limit on the conductive plate, improving the stability of the conductive plate installation and ensuring stable contact between the moving and stationary contacts. It also facilitates the relay's activation with lower power consumption. Of course, during the initial contact phase, there is a gap between all the pressure sections and the conductive plate, which further helps the relay activate with even lower power consumption. As the actuating component continues to move with the moving iron core, and when the moving and stationary contacts are at the end of the contact phase—that is, in an overtravel state—all the pressure sections abut against the conductive plate. This increases the pressure of the spring component on the conductive plate, ensuring reliable contact between the moving and stationary contacts and reducing contact resistance. According to Joule's law, reducing contact resistance lowers the heat generation power, thus solving the heat generation problem without changing the relay's size. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a relay according to an embodiment of this application.

[0028] Figure 2 for Figure 1 The diagram shows the structure of the moving spring assembly of the relay.

[0029] Figure 3 for Figure 2 The diagram shows the structure of the spring component of the relay.

[0030] Figure 4 This is a schematic diagram of the structure of a relay according to another embodiment of this application.

[0031] Figure 5 for Figure 4 The diagram shows the structure of the moving spring assembly of the relay.

[0032] Figure 6 for Figure 4 The image shows a cross-sectional view of the relay.

[0033] Explanation of icon numbers:

[0034] 10. Base; 20. Pushing component; 21. Cover plate; 22. Pushing body; 221. Base; 222. Limiting component; 2221. Limiting groove; 30. Contact part; 31. Static spring assembly; 311. Static spring sheet; 3111. Static contact; 32. Moving spring assembly; 321. Conductive sheet; 3211. Moving contact; 322. Compression spring assembly; 3221. Pressure section; 32211. First pressure section; 32212. Second pressure section; 3221 3. First arc segment; 32214. Second arc segment; 3222. First connecting segment; 3223. First compression spring; 32231. Third pressure segment; 32232. Third arc segment; 32233. Second connecting segment; 3224. Second compression spring; 32241. Fourth pressure segment; 32242. Fourth arc segment; 32243. Third connecting segment; 40. Magnetic circuit part; 41. Moving iron core; 42. Stationary iron core; 43. Elastic reset component. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] See Figure 1 and Figure 4 The relay provided in one embodiment of this application includes a base 10, a pushing member 20, a contact portion 30, and a magnetic circuit portion 40.

[0037] The magnetic circuit section 40 is located on the base 10. The magnetic circuit section 40 includes a coil assembly, a stationary iron core 42, and a moving iron core 41. A portion of the moving iron core 41 is located in the coil assembly and is connected to the pushing member 20.

[0038] See Figure 1 , Figure 2 , Figure 4 and Figure 5The contact portion 30 includes a stationary spring assembly 31 and a movable spring assembly 32. The stationary spring assembly 31 includes a stationary spring sheet 311, which is disposed on the base 10 and has a stationary contact 3111. The movable spring assembly 32 includes a conductive sheet 321, which has a movable contact 3211. The conductive sheet 321 is disposed on a pushing member 20, which can drive the conductive sheet 321 to move towards or away from the stationary spring assembly 31, so that the movable contact 3211 contacts or separates from the stationary contact 3111. (See reference...) Figure 1 The relay has at least two stationary spring assemblies 31 and at least two moving spring assemblies 32. The stationary contacts 3111 of all stationary spring assemblies 31 and the moving contacts 3211 of all moving spring assemblies 32 are arranged in a one-to-one correspondence. When the relay is in operation, the coil assembly is energized. Under the action of electromagnetic attraction, the moving iron core 41 moves towards the stationary iron core 42. The moving iron core 41 drives the pushing component 20 to move synchronously, which in turn drives all the moving spring assemblies 32 towards the stationary spring assemblies 31, so that all the moving contacts 3211 and all the stationary contacts 3111 make contact one-to-one to form a parallel circuit, thus reducing the temperature rise of the relay.

[0039] In one embodiment, the pushing component 20 includes a pushing body 22 and a cover plate 21. The cover plate 21 is disposed on the side of the pushing body 22 away from the stationary spring assembly 31, and the conductive sheet 321 is movably disposed between the pushing body 22 and the cover plate 21.

[0040] Specifically, see Figure 4 and Figure 6 The pushing body 22 includes a base 221 and a limiting member 222. Optionally, the base 221 is an insulating base, and the limiting member 222 is a metal sheet, with the insulating base and the metal sheet insert being injection molded. The limiting member 222 has a limiting groove 2221, and a conductive sheet 321 is disposed within the limiting groove 2221. A cover plate 21 is disposed on the side of the limiting member 222 away from the base 221 and is connected to the limiting member 222. In this way, the groove wall of the limiting groove 2221 and the cover plate 21 can limit the conductive sheet 321, ensuring the reliability of the conductive sheet 321's installation on the pushing component 20.

[0041] In this embodiment, two limiting members 222 are provided, and the two limiting members 222 are arranged side by side in the length direction of the conductive sheet 321.

[0042] Further, see Figure 2 and Figure 5The moving spring assembly 32 also includes a compression spring component 322, which is disposed between the conductive sheet 321 and the cover plate 21 and connected to the cover plate 21. The compression spring component 322 includes at least two pressure sections 3221, which are inclined relative to the conductive sheet 321. Before the moving contact 3211 and the stationary contact 3111 are in an overtravel state, all pressure sections 3221 have gaps with the conductive sheet 321, or some pressure sections 3221 are in contact with the conductive sheet 321. When the moving contact 3211 and the stationary contact 3111 are in an overtravel state, all pressure sections 3221 abut against the conductive sheet 321 to increase the pressure of the compression spring component 322 on the conductive sheet 321.

[0043] When the relay is working, the coil assembly is energized. Under the action of electromagnetic attraction, the moving iron core 41 moves towards the stationary iron core 42. The moving iron core 41 drives the pushing component 20 to move synchronously, which in turn drives the conductive plate 321 to move towards the stationary spring assembly 31. When the moving contact 3211 initially contacts the stationary contact 3111, that is, when the moving contact 3211 and the stationary contact 3111 are just in contact, part of the pressure section 3221 abuts against the conductive plate 321. In this way, the part of the pressure section 3221 acts as a limit for the conductive plate 321, improving the stability of the installation of the conductive plate 321 and ensuring stable contact between the moving contact 3211 and the stationary contact 3111. At the same time, it is also beneficial for the relay to be activated with lower power consumption. Of course, when the moving contact 3211 and the stationary contact 3111 are initially in contact, there is a gap between all the pressure sections 3221 and the conductive plate 321. This is beneficial for the relay to be activated with lower power consumption.

[0044] As the pushing component 20 continues to move with the moving iron core 41, when the moving contact 3211 and the stationary contact 3111 are at the end of their contact period, that is, when the moving contact 3211 and the stationary contact 3111 are in an overtravel state, all the pressure sections 3221 abut against the conductive sheet 321. This increases the pressure of the spring component 322 on the conductive sheet 321, ensuring the reliability of the contact between the moving contact 3211 and the stationary contact 3111, and reducing the contact resistance between the moving contact 3211 and the stationary contact 3111. According to Joule's law, when the contact resistance is reduced, the heating power can be reduced. In this way, the heating problem can be solved without changing the size of the relay.

[0045] Furthermore, when the coil loses its excitation, the combined action of the reverse thrust of the compression spring component 322 and the elastic restoring force of the elastic reset component 43 of the magnetic circuit portion 40 can increase the speed of the return motion of the pushing component 20 and the conductive sheet 321, thereby shortening the separation time between the moving contact 3211 and the stationary contact 3111, reducing the arcing between the moving contact 3211 and the stationary contact 3111, and further reducing the burning of the moving contact 3211 and the stationary contact 3111, thereby extending the service life of the relay.

[0046] In one embodiment, the compression spring component 322 is flexible. During initial assembly, if the height of the conductive sheets 321 is inconsistent or tilted, the flexible compression spring component 322 can adaptively deform to correct production errors, ensuring that all moving contacts 3211 can smoothly contact all stationary contacts 3111 in a one-to-one correspondence. In one embodiment, see [reference needed]. Figure 2 and Figure 3 The compression spring component 322 is bifurcated to form a first pressure section 32211 and a second pressure section 32212.

[0047] Before the moving contact 3211 and the stationary contact 3111 are in an overtravel state, the first pressure section 32211 contacts the conductive sheet 321, and there is a gap between the second pressure section 32212 and the conductive sheet 321. Thus, the first pressure section 32211 abuts against the conductive sheet 321, and the first pressure section 32211 can limit the movement of the conductive sheet 321, ensuring that the conductive sheet 321 is stably and reliably positioned on the pushing member 20. Simultaneously, because there is a gap between the second pressure section 32212 and the conductive sheet 321, the relay can be activated with relatively low power consumption.

[0048] Of course, in other embodiments, there is a gap between the first pressure segment 32211 and the conductive sheet 321, and a gap between the second pressure segment 32212 and the conductive sheet 321. In this way, the relay can be activated with less power consumption.

[0049] When the moving contact 3211 and the stationary contact 3111 are in an overtravel state, both the first pressure section 32211 and the second pressure section 32212 abut against the conductive sheet 321. As the pushing member 20 continues to move with the moving iron core 41, both the first pressure section 32211 and the second pressure section 32212 abut against the conductive sheet 321. This increases the pressure of the compression spring member 322 on the conductive sheet 321, improves the reliability of the contact between the moving contact 3211 and the stationary contact 3111, reduces the contact resistance between the moving contact 3211 and the stationary contact 3111, and thus reduces heat generation. In one embodiment, the first pressure section 32211 has a first end and a second end opposite to each other, the first end being used to connect with the cover plate 21. See also Figure 2 In the direction from the first end to the second end, the first pressure segment 32211 is inclined toward the conductive sheet 321. The inclined first pressure segment 32211 can better adjust the direction of the contact force, while increasing the normal component force, improving the friction force, reducing the tendency of the first pressure segment 32211 to slide between the conductive sheet 321, and further improving the stability of the contact force.

[0050] When the moving contact 3211 and the stationary contact 3111 are in initial contact, the second end contacts the conductive sheet 321. Thus, the second end abuts against the conductive sheet 321, allowing the first pressure section 32211 to limit the conductive sheet 321, ensuring that the conductive sheet 321 is stably and reliably positioned on the pushing member 20. This also improves the reliability of the moving contact 3211 and the stationary contact 3111 during the initial contact.

[0051] Of course, in other embodiments, there is a gap between the second end and the conductive sheet 321, and the second end contacts the conductive sheet 321 when the moving contact 3211 and the stationary contact 3111 are in an overtravel state. This allows the relay to be activated with lower power consumption.

[0052] In one embodiment, the second pressure section 32212 has opposing third and fourth ends, the third end being connected to the cover plate 21. See also... Figure 2 In the direction from the third end to the fourth end, the second pressure segment 32212 is inclined toward the conductive sheet 321. The inclined second pressure segment 32212 can better adjust the direction of the contact force, while increasing the normal component force, improving the friction force, reducing the tendency of the second pressure segment 32212 to slide between the conductive sheet 321, and further improving the stability of the contact force.

[0053] When the moving contact 3211 and the stationary contact 3111 are initially in contact, there is a gap between the fourth end and the conductive plate 321, allowing the relay to operate with relatively low power consumption. When the moving contact 3211 and the stationary contact 3111 are in contact at the end of the contact process, the fourth end contacts the conductive plate 321. This increases the pressure of the spring component 322 on the conductive plate 321, ensuring reliable contact between the moving contact 3211 and the stationary contact 3111 and reducing the contact resistance. According to Joule quantification, reducing the contact resistance reduces the heat generation power, thus solving the heat generation problem without changing the relay's size.

[0054] In one embodiment, see Figure 2 and Figure 3 The length of the first pressure segment 32211 is greater than the length of the second pressure segment 32212. This arrangement ensures that the first pressure segment 32211 is in contact with the conductive sheet 321 before the coil assembly is energized, and that there is a gap between the second pressure segment 32212 and the conductive sheet 321.

[0055] In one embodiment, the pressure of the first pressure segment 32211 is less than the pressure of the second pressure segment 32212. Taking advantage of the low attraction force in the initial stage of the magnetic circuit section 40, the pressure of the first pressure segment 32211 is set to be relatively low, which helps the relay to activate with lower power consumption. Taking advantage of the high attraction force in the later stage of the magnetic circuit section 40, the pressure of the second pressure segment 32212 is increased, which increases the dynamic contact pressure between the moving contact 3211 and the stationary contact 3111, thereby reducing the contact resistance between the moving contact 3211 and the stationary contact 3111.

[0056] Optionally, see Figure 3 The width of the first pressure segment 32211 is smaller than the width of the second pressure segment 32212. Here, W1 represents the width of the first pressure segment 32211, and W2 represents the width of the second pressure segment 32212. This allows the pressure in the first pressure segment 32211 to be less than the pressure in the second pressure segment 32212.

[0057] Optionally, the thickness of the first pressure segment 32211 is less than the thickness of the second pressure segment 32212. This allows the pressure of the first pressure segment 32211 to be less than the pressure of the second pressure segment 32212.

[0058] Optionally, the tilt angle of the first pressure segment 32211 relative to the conductive sheet 321 is smaller than the tilt angle of the second pressure segment 32212 relative to the conductive sheet 321. In this way, the pressure of the first pressure segment 32211 is less than the pressure of the second pressure segment 32212.

[0059] In one embodiment, see Figure 2 and Figure 3 The second end has a first arc-shaped segment 32213, which bends away from the conductive sheet 321. The fourth end has a second arc-shaped segment 32214, which also bends away from the conductive sheet 321. The first and second arc-shaped segments 32213 and 32214 are used to contact the conductive sheet 321. When the first and second arc-shaped segments 32213 and 32214 contact the conductive sheet 321, they can disperse the contact pressure to a certain extent, reduce the pressure per unit area, thereby reducing the wear rate of the first pressure segment 32211 and the second pressure segment 32212, and extending their service life.

[0060] In one embodiment, see Figure 3 The first pressure section 32211 has at least one second pressure section 32212 on each of its opposite sides along its length. This further increases the pressure of the spring component 322 on the conductive sheet 321, improves the reliability of the contact between the moving contact 3211 and the stationary contact 3111, and reduces the contact resistance between the moving contact 3211 and the stationary contact 3111.

[0061] In this embodiment, a second pressure section 32212 is provided on each of the opposite sides of the first pressure section 32211.

[0062] In one embodiment, see Figure 2 There are two moving contacts 3211, which are respectively located at the two ends of the conductive sheet 321 along its length.

[0063] Furthermore, there are two stationary contacts 3111, which are arranged one-to-one with the two moving contacts 3211.

[0064] In one embodiment, see Figure 2 The compression spring component 322 is disposed between the two moving contacts 3211 along the length direction of the conductive sheet 321. Both ends of the compression spring component 322 along its length direction are bifurcated to form a first pressure section 32211 and a second pressure section 32212. It can be understood that the compression spring component 322 also includes a first connecting section 3222, which is connected to the cover plate 21. The first pressure section 32211 and the second pressure section 32212 are provided on opposite sides of the first connecting section 3222. Thus, the first pressure section 32211 and the second pressure section 32212 on one side of the first connecting section 3222 are positioned close to one of the moving contacts 3211, and the first pressure section 32211 and the second pressure section 32212 on the other side of the first connecting section 3222 are positioned close to the other moving contact 3211. In this way, under the action of the compression spring component 322, the reliability of the one-to-one contact between the two moving contacts 3211 and the two stationary contacts 3111 can be improved, and the contact resistance between the moving contacts 3211 and the stationary contacts 3111 can be reduced.

[0065] In another embodiment, see [reference] Figure 4 and Figure 5 The compression spring component 322 includes at least a first compression spring sheet 3223 and a second compression spring sheet 3224. The first compression spring sheet 3223 and the second compression spring sheet 3224 are both disposed on the side of the conductive sheet 321 away from the stationary spring assembly 31 and are connected to the pushing component 20.

[0066] See Figure 5The first pressure spring 3223 includes a third pressure section 32231, and the second pressure spring 3224 includes a fourth pressure section 32241. When the moving contact 3211 and the stationary contact 3111 are initially in contact, i.e., before the moving contact 3211 and the stationary contact 3111 are in an overtravel state, the third pressure section 32231 contacts the conductive sheet 321, and there is a gap between the fourth pressure section 32241 and the conductive sheet 321. Thus, the third pressure section 32231 abuts against the conductive sheet 321, and the third pressure section 32231 can limit the movement of the conductive sheet 321, ensuring that the conductive sheet 321 is stably and reliably positioned on the pushing member 20. Simultaneously, because there is a gap between the fourth pressure section 32241 and the conductive sheet 321, the relay can be activated with relatively low power consumption.

[0067] Of course, in other embodiments of this invention, there is a gap between the third pressure segment 32231 and the conductive sheet 321, and a gap between the fourth pressure segment 32241 and the conductive sheet 321. In this way, the relay can be activated with less power consumption.

[0068] As the moving iron core 41 continues to move, the moving contact 3211 and the stationary contact 3111, at the end of their contact phase (i.e., when they are in an overtravel state), both the third pressure section 32231 and the fourth pressure section 32241 abut against the conductive sheet 321. This increases the pressure of the spring component 322 on the conductive sheet 321, improving the reliability of the contact between the moving contact 3211 and the stationary contact 3111, reducing the contact resistance, and thus reducing heat generation. In one embodiment, the third pressure section 32231 has opposing fifth and sixth ends, the fifth end being used for connection with the cover plate 21. Further, see [reference needed]. Figure 5 In the direction from the fifth end to the sixth end, the third pressure segment 32231 is inclined toward the conductive sheet 321. In this way, the inclined third pressure segment 32231 can better adjust the direction of the abutment force, while increasing the normal component force, improving the friction force, reducing the tendency of the first pressure spring 3223 and the conductive sheet 321 to slide, and further improving the stability of the abutment force.

[0069] When the moving contact 3211 and the stationary contact 3111 are initially in contact, the sixth end contacts the conductive sheet 321. In this way, the sixth end limits the conductive sheet 321, so that the conductive sheet 321 is stably and reliably placed on the pushing component 20, thereby improving the reliability of the contact between the moving contact 3211 and the stationary contact 3111.

[0070] Of course, during the initial contact phase between the moving contact 3211 and the stationary contact 3111, there is a gap between the sixth terminal and the conductive plate 321, allowing the relay to operate with relatively low power consumption. During the final contact phase between the moving contact 3211 and the stationary contact 3111, the sixth terminal comes into contact with the conductive plate 321.

[0071] In one embodiment, the fourth pressure section 32241 has opposing seventh and eighth ends, the seventh end being used for connection with the cover plate 21. Further, see... Figure 5 In the direction from the seventh end to the eighth end, the fourth pressure segment 32241 is inclined toward the conductive sheet 321. In this way, the inclined fourth pressure segment 32241 can better adjust the direction of the abutment force, while increasing the normal component force, improving the friction force, reducing the tendency of the second pressure spring 3224 and the conductive sheet 321 to slide, and further improving the stability of the abutment force.

[0072] During the initial contact phase between the moving contact 3211 and the stationary contact 3111, there is a gap between the eighth terminal and the conductive plate 321, allowing the relay to operate with relatively low power consumption. During the final contact phase, the eighth terminal of the moving contact 3111 and the stationary contact 3211 comes into contact with the conductive plate 321. This increases the pressure of the spring component 322 on the conductive plate 321, ensuring reliable contact between the moving contact 3211 and the stationary contact 3111 and reducing the contact resistance. According to Joule quantification, reducing contact resistance reduces heat generation power, thus solving the heat generation problem without changing the relay's size.

[0073] In one embodiment, see Figure 5 The length of the third pressure segment 32231 is greater than the length of the fourth pressure segment 32241. This arrangement ensures that the third pressure segment 32231 is in contact with the conductive sheet 321 before the coil assembly is energized, and that there is a gap between the fourth pressure segment 32241 and the conductive sheet 321.

[0074] In one embodiment, the pressure of the third pressure segment 32231 is less than the pressure of the fourth pressure segment 32241. Taking advantage of the low attraction force in the initial stage of the magnetic circuit section 40, the pressure of the third pressure segment 32231 is set to be relatively low, which helps the relay to activate with lower power consumption. Taking advantage of the high attraction force in the later stage of the magnetic circuit section 40, the pressure of the fourth pressure segment 32241 is increased, which increases the dynamic contact pressure between the moving contact 3211 and the stationary contact 3111, thereby reducing the contact resistance between the moving contact 3211 and the stationary contact 3111.

[0075] Optionally, the width of the third pressure segment 32231 is smaller than the width of the fourth pressure segment 32241. This ensures that the pressure in the third pressure segment 32231 is less than the pressure in the fourth pressure segment 32241.

[0076] Optionally, the thickness of the third pressure section 32231 is less than the thickness of the fourth pressure section 32241. This ensures that the pressure in the third pressure section 32231 is less than the pressure in the fourth pressure section 32241.

[0077] Optionally, the tilt angle of the third pressure segment 32231 relative to the conductive sheet 321 is smaller than the tilt angle of the fourth pressure segment 32241 relative to the conductive sheet 321. This ensures that the pressure of the third pressure segment 32231 is less than the pressure of the fourth pressure segment 32241.

[0078] In one embodiment, see Figure 5 The sixth end has a third arc-shaped segment 32232, which bends away from the conductive sheet 321. The eighth end has a fourth arc-shaped segment 32242, which also bends away from the conductive sheet 321. The third and fourth arc-shaped segments 32232 and 32242 are used to contact the conductive sheet 321. Thus, when the third and fourth arc-shaped segments 32232 and 32242 contact the conductive sheet 321, they can disperse the contact pressure to a certain extent, reducing the pressure per unit area, thereby reducing the wear rate of the third and fourth pressure segments 32231 and extending their service life.

[0079] In one embodiment, see Figure 5 The first compression spring 3223 is located between the two moving contacts 3211.

[0080] Further, see Figure 5 The first pressure spring 3223 also includes a second connecting section 32233, which is connected to the cover plate 21. At least one third pressure section 32231 is provided between the second connecting section 32233 and one of the moving contacts 3211, and at least one third pressure section 32231 is provided between the second connecting section 32233 and the other moving contact 3211. Optionally, the third pressure sections 32231 on both sides of the second connecting section 32233 are symmetrically arranged. With this arrangement, under the action of the first pressure spring 3223, stable contact can be ensured that the two moving contacts 3211 and the two stationary contacts 3111 are in one-to-one correspondence.

[0081] In one embodiment, see Figure 5 The second pressure spring 3224 is located between the two moving contacts 3211.

[0082] Furthermore, the second pressure spring 3224 also includes a third connecting section 32243, which is connected to the cover plate 21. At least one fourth pressure section 32241 is provided between the third connecting section 32243 and one of the moving contacts 3211, and at least one fourth pressure section 32241 is provided between the third connecting section 32243 and the other moving contact 3211. Optionally, the fourth pressure sections 32241 on both sides of the third connecting section 32243 are symmetrically arranged. Thus, under the action of the second pressure spring 3224, the reliability of the one-to-one contact between the two moving contacts 3211 and the two stationary contacts 3111 can be improved, and the contact resistance between the moving contacts 3211 and the stationary contacts 3111 can be reduced.

[0083] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0084] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0085] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0086] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0087] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0088] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A movable spring assembly, characterized in that, include: A conductive sheet, wherein the conductive sheet is provided with a movable contact, the movable contact being used to contact or separate from a stationary contact; as well as A compression spring component is provided on the side of the conductive sheet away from the stationary contact. The compression spring component includes at least two pressure sections, which are inclined relative to the conductive sheet. All pressure sections are in clearance fit with the conductive sheet, or some pressure sections are in contact with the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, all pressure sections abut against the conductive sheet to increase the pressure of the compression spring component on the conductive sheet.

2. The moving spring assembly according to claim 1, characterized in that, The compression spring component is bifurcated to form a first pressure section and a second pressure section, both of which have gaps with the conductive sheet; or the first pressure section is in contact with the conductive sheet, and the second pressure section has gaps with the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, both the first pressure segment and the second pressure segment abut against the conductive sheet.

3. The moving spring assembly according to claim 2, characterized in that, The first pressure segment has a first end and a second end opposite to each other. The first end is used to connect with the pushing component. In the direction from the first end to the second end, the first pressure segment is inclined toward the conductive sheet. The second end contacts the conductive sheet. Alternatively, there is a gap between the second end and the conductive sheet, and the second end contacts the conductive sheet when the moving contact and the stationary contact are in an overtravel state.

4. The moving spring assembly according to claim 3, characterized in that, The second end is provided with a first arc-shaped segment, which bends away from the conductive sheet and is used to contact the conductive sheet.

5. The moving spring assembly according to claim 2, characterized in that, The second pressure section has a third end and a fourth end opposite to each other. The third end is used to connect with the pushing component. In the direction from the third end to the fourth end, the second pressure section is inclined toward the conductive sheet. There is a gap between the fourth end and the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, the fourth end contacts the conductive sheet.

6. The moving spring assembly according to claim 5, characterized in that, The fourth end is provided with a second arc segment, which bends away from the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, the second arc segment contacts the conductive sheet.

7. The moving spring assembly according to claim 2, characterized in that, The pressure in the first pressure section is lower than the pressure in the second pressure section; And / or, the length of the first pressure segment is greater than the length of the second pressure segment.

8. The moving spring assembly according to any one of claims 2 to 7, characterized in that, At least one second pressure section is provided on both sides of the first pressure section along its length.

9. The moving spring assembly according to any one of claims 2 to 7, characterized in that, The moving contact is provided in two parts, and the two moving contacts are respectively located at both ends of the conductive sheet in the length direction; The compression spring component is disposed between the two moving contacts along the length direction of the conductive sheet, and both ends of the compression spring component along the length direction are bifurcated to form the first pressure section and the second pressure section.

10. The moving spring assembly according to claim 1, characterized in that, The compression spring component includes at least a first compression spring sheet and a second compression spring sheet. The first compression spring sheet includes a third pressure segment, and the second compression spring sheet includes a fourth pressure segment. Both the third pressure segment and the fourth pressure segment have gaps with the conductive sheet; or, the third pressure segment is in contact with the conductive sheet, and the fourth pressure segment has a gap with the conductive sheet. When the moving contact and the stationary contact are in an overtravel state, both the third pressure section and the fourth pressure section abut against the conductive sheet.

11. The moving spring assembly according to claim 10, characterized in that, The third pressure section has a fifth end and a sixth end, the fifth end being used to connect with the pushing component. In the direction from the fifth end to the sixth end, the third pressure section is inclined toward the conductive sheet, and the sixth end is in contact with the conductive sheet; or, there is a gap between the sixth end and the conductive sheet, and the sixth end is in contact with the conductive sheet when the moving contact and the stationary contact are in an overtravel state. And / or, the fourth pressure segment has a seventh end and an eighth end opposite to each other, the seventh end being used to connect with the pushing component, the fourth pressure segment being inclined toward the conductive sheet in the direction from the seventh end to the eighth end, the eighth end having a gap with the conductive sheet, and the eighth end contacting the conductive sheet when the moving contact and the stationary contact are in an overtravel state.

12. The moving spring assembly according to claim 10, characterized in that, The length of the third pressure segment is greater than the length of the fourth pressure segment; And / or, the pressure of the third pressure segment is less than the pressure of the fourth pressure segment.

13. The moving spring assembly according to any one of claims 10 to 12, characterized in that, The moving contact is provided in two parts, which are respectively located at opposite ends of the conductive sheet. The first compression spring and the second compression spring are both located between the two moving contacts. The first compression spring also includes a second connecting section for connecting with the pushing component. At least one third pressure section is provided between the second connecting section and one of the moving contacts, and at least one third pressure section is provided between the second connecting section and the other moving contact. The second pressure spring also includes a third connecting section for connecting with the pushing component. At least one fourth pressure section is provided between the third connecting section and one of the moving contacts, and at least one fourth pressure section is provided between the third connecting section and the other moving contact.

14. A relay, characterized in that, include: Propulsion components; A stationary spring assembly, the stationary spring assembly including a stationary spring sheet, the stationary spring sheet being provided with a stationary contact; as well as The moving spring assembly as described in any one of claims 1 to 13, wherein the conductive sheet is disposed on the pushing member, the compression spring member is connected to the pushing member, and the pushing member is used to drive the conductive sheet to move toward or away from the stationary spring assembly, so that the moving contact contacts or separates from the stationary contact.

15. The relay according to claim 14, characterized in that, The pushing component includes a base, a limiting member, and a cover plate. The base is connected to the limiting member, the limiting member has a limiting groove, the conductive sheet is disposed in the limiting groove, the cover plate is disposed on the side of the limiting member away from the base and is connected to the limiting member, and the compression spring component is disposed between the conductive sheet and the cover plate and is connected to the cover plate.

16. The relay according to claim 14, characterized in that, The stationary spring assembly has at least two components, and the moving spring assembly has at least two components. The moving contacts of all the moving spring assemblies are arranged in a one-to-one correspondence with the stationary contacts of all the stationary spring assemblies.

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