Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to a relay which comprises an installation structure and an auxiliary static spring, the auxiliary static spring is installed on the installation structure, the installation structure is provided with a limiting part, the auxiliary static spring is provided with a limiting matching part, and the limiting matching part is matched with the limiting part. The auxiliary static spring is limited to move relative to the installation structure, and then stable installation of the auxiliary static spring is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control devices, in particular to a relay. Background Art

[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), and is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. In order to meet the detection or monitoring functions in the control circuit, the relay is usually provided with an auxiliary contact structure. In the related art, the auxiliary contact structure usually includes an auxiliary moving spring and an auxiliary static spring. The installation of the auxiliary static spring is unstable. During the multiple engagement of the auxiliary moving spring and the auxiliary static spring, the position of the auxiliary static spring is easily offset, resulting in poor contact. Utility Model Content

[0003] The embodiment of the utility model provides a relay to enhance the installation stability of the auxiliary static spring and ensure good contact performance.

[0004] The relay provided by the embodiment of the present invention includes a mounting structure and an auxiliary static spring, the auxiliary static spring is installed on the mounting structure, the mounting structure is provided with a limiting portion, and the auxiliary static spring is provided with a limiting matching portion, and the limiting matching portion cooperates with the limiting portion to limit the movement of the auxiliary static spring relative to the mounting structure.

[0005] According to some embodiments of the present invention, the limiting portion includes a guide groove, and in a direction from the groove bottom to the groove mouth of the guide groove, the guide groove includes a first groove portion and a second groove portion, the first groove portion is connected to the second groove portion, and the width of the first groove portion is greater than the width of the second groove portion;

[0006] The auxiliary static spring includes a first rod segment, the first rod segment is inserted into the first slot portion, and along the width direction of the guide slot, the width of the first rod segment is greater than the width of the second slot portion.

[0007] According to some embodiments of the present invention, the relay further comprises an insulating seat and an auxiliary dynamic spring; the mounting structure is fixedly connected to the insulating seat;

[0008] The auxiliary static spring also includes a second rod segment, which is connected to the first rod segment and can contact the auxiliary dynamic spring; the second rod segment includes a rod portion and a thinning portion, and along the width direction of the guide groove, the width of the thinning portion is smaller than the width of the first rod segment, and the width of the thinning portion is adapted to the width of the second groove portion so that the thinning portion can move along the extension direction of the second groove portion.

[0009] According to some embodiments of the present invention, the limiting portion further includes a limiting groove, which is connected to the guide groove; a portion of the second rod segment is limited within the limiting groove, and the portion of the rod portion located outside the limiting groove can contact the auxiliary dynamic spring.

[0010] According to some embodiments of the present utility model, the relay further includes an insulating cover, the insulating cover is connected to the insulating seat, a fixing hole is provided on the top of the insulating cover, and a positioning structure is provided on the surface of the top of the insulating cover facing the insulating seat;

[0011] The auxiliary static spring also includes a third rod segment, and the third rod segment includes a transverse segment and a vertical segment. One end of the transverse segment is connected to the first rod segment, and the other end of the transverse segment is connected to the vertical segment. The vertical segment is passed through the fixing hole, and the positioning structure abuts against the transverse segment to press and fix the second rod segment in the limiting groove.

[0012] According to some embodiments of the present invention, the positioning structure includes a protrusion, and the protrusion abuts against the transverse section.

[0013] According to some embodiments of the present invention, the relay further comprises a static contact, wherein the static contact is mounted on the top of the insulating cover;

[0014] A vertical distance between a free end of the vertical segment and a center line of the static contact is greater than a vertical distance between an end of the first rod segment connected to the second rod segment and the center line of the static contact.

[0015] According to some embodiments of the present invention, the relay further comprises a push rod, and the auxiliary dynamic spring is mounted on the push rod;

[0016] The auxiliary static spring also includes an avoidance section, which is connected between the first rod section and the transverse section; the auxiliary dynamic spring has a width direction, and along the width direction of the auxiliary dynamic spring, the avoidance section extends from the first rod section toward away from the push rod, so that the vertical distance between the transverse section and the axis of the push rod is greater than the distance between the second rod section and the axis of the push rod.

[0017] According to some embodiments of the present invention, the relay further includes an insulating cover and an auxiliary dynamic spring, and the mounting structure is integrally formed with the insulating cover;

[0018] The auxiliary static spring further includes a second rod segment, the second rod segment is connected to the first rod segment, and the second rod segment can contact the auxiliary dynamic spring.

[0019] According to some embodiments of the present invention, a fixing hole is provided on the top of the insulating cover; the auxiliary static spring also includes a third rod segment, the third rod segment includes a transverse segment and a vertical segment, one end of the transverse segment is connected to the first rod segment, and the other end of the transverse segment is connected to the vertical segment, and the vertical segment is passed through the fixing hole.

[0020] According to some embodiments of the present invention, the limiting portion further includes a limiting groove, one end of the limiting groove is connected to the guide groove, the other end of the limiting groove is connected to the fixing hole, and the transverse section is limited to the limiting groove.

[0021] According to some embodiments of the present invention, the auxiliary dynamic spring is located on one side of the second rod segment close to the top of the insulating cover, so that the auxiliary dynamic spring and the auxiliary static spring form a normally closed auxiliary contact assembly.

[0022] According to some embodiments of the present invention, the relay also includes an insulating seat, and the mounting structure is fixedly connected to the insulating seat; the limiting portion includes a first stop surface and a second stop surface, and the auxiliary static spring is limited and fixed between the first stop surface and the second stop surface, wherein the surface of the auxiliary static spring abutting the first stop surface and the second stop surface forms the limiting fitting portion.

[0023] According to some embodiments of the present invention, the relay also includes an insulating cover, the mounting structure is fixedly connected to the insulating cover, the insulating cover is provided with a fixing hole, and the auxiliary static spring is limited and fixed between the hole wall of the fixing hole and the side wall of the insulating cover, wherein the hole wall of the fixing hole and the side wall of the insulating cover together form the limiting portion, and the surface of the auxiliary static spring abutting against the hole wall of the fixing hole and the side wall of the insulating cover forms the limiting fitting portion.

[0024] According to some embodiments of the present invention,

[0025] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0026] (1) The relay provided in the embodiment of the present invention is provided with a mounting structure, a limiting portion is provided on the mounting structure, and a limiting matching portion is provided on the auxiliary static spring. The matching between the limiting matching portion and the limiting portion is utilized to limit the movement of the auxiliary static spring relative to the mounting structure, thereby achieving stable installation of the auxiliary static spring.

[0027] (2) The relay provided by the embodiment of the present invention has a mounting structure that can be fixedly connected to the insulating seat. The limiting portion includes a guide groove, and the guide groove includes a first groove portion and a second groove portion in the direction from the groove bottom to the groove mouth of the guide groove. The first groove portion is connected to the second groove portion, and the width of the first groove portion is greater than the width of the second groove portion; the auxiliary static spring includes a first rod segment and a second rod segment, the second rod segment is connected to the first rod segment, and the second rod segment can contact the auxiliary dynamic spring; the first rod segment is inserted into the first groove portion, and along the width direction of the guide groove, the width of the first rod segment is greater than the width of the second groove portion. The second rod segment includes a rod portion and a thinning portion, and along the width direction of the guide groove, the width of the thinning portion is smaller than the width of the first rod segment, and the width of the thinning portion is adapted to the width of the second groove portion so that the thinning portion can move along the extension direction of the second groove portion. Insert the first rod segment into the first groove portion and move along the first groove portion. After assembly, the surface of the first rod segment facing the second groove portion serves as part of the position-limiting mating portion, mating with the groove wall of the second groove portion. The end of the second groove portion connected to the first groove wall can stop the first rod segment within the first groove portion, preventing the first rod segment from escaping from the second groove portion along the X-axis. Simultaneously, the sidewall of the thinned portion serves as another part of the position-limiting mating portion, mating with the groove wall of the second groove portion, thereby limiting the movement of the first rod segment along the Y-axis.

[0028] (3) The relay provided by the embodiment of the present invention ensures that the second rod section can be stably fixed in the limiting groove when in contact with the auxiliary dynamic spring by limiting a part of the fixed section in the limiting groove, and is not prone to shaking and displacement, thereby ensuring that the auxiliary dynamic spring and the rod section can still be reliably in contact after multiple engagements.

[0029] (4) In the relay provided by the embodiment of the present invention, the setting of the avoidance section in the auxiliary static spring makes the projection of the side of the auxiliary dynamic spring away from the push rod in the set plane be located on the side of the projection of the second connecting section in the set plane close to the push rod, thereby ensuring that the auxiliary dynamic spring does not interfere with the second connecting section during assembly.

[0030] (5) The relay provided in the embodiment of the present invention can also have a mounting structure that is integrally formed with the insulating cover. The auxiliary static spring is fixed between the hole wall of the fixing hole and the side wall of the insulating cover, wherein the hole wall of the fixing hole and the side wall of the insulating cover together form a limiting portion, and the surface of the auxiliary static spring that abuts against the hole wall of the fixing hole and the side wall of the insulating cover forms a limiting fitting portion. In this case, the guide groove can be a straight groove. The top plate of the insulating cover is provided with an extension portion, which extends from the hole wall of the fixing hole away from the guide groove toward the direction close to the insulating seat to increase the contact area between the hole wall and the vertical section, thereby further enhancing the installation stability of the auxiliary static spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is an exploded view of the mounting structure and auxiliary static spring in the relay provided by an embodiment of the present utility model;

[0032] Figure 2 Shown is Figure 1 Shown is a schematic diagram of a portion of the first connecting section of the auxiliary static spring being inserted into the guide groove;

[0033] Figure 3 The figure shows a schematic structural diagram of an auxiliary static spring in a relay provided by an embodiment of the present utility model;

[0034] Figure 4 Shown is a schematic diagram of the relay structure provided by an embodiment of the present utility model;

[0035] Figure 5 Shown is an exploded view of a relay provided by an embodiment of the present utility model;

[0036] Figure 6 Shown is a top view of a relay provided by an embodiment of the present utility model (the insulating cover and the sealing adhesive layer are not shown).

[0037] Figure 7 Shown is a top view of the internal structure of a relay provided by an embodiment of the present utility model;

[0038] Figure 8 Shown is Figure 7 A partial enlarged view of point Ⅰ in the middle;

[0039] Figure 9 The figure shows a schematic diagram of the structure of the push rod and the auxiliary dynamic spring in the relay provided by the embodiment of the present utility model;

[0040] Figure 10 Shown is an exploded view of another mounting structure and auxiliary static spring provided by an embodiment of the present utility model;

[0041] Figure 11 Shown is Figure 10 A partial enlarged view of point A in the middle;

[0042] Figure 12 Shown is an exploded view of another mounting structure and auxiliary static spring provided by an embodiment of the present utility model from another perspective;

[0043] Figure 13 Shown is another structural schematic diagram of a relay provided in an embodiment of the present utility model.

[0044] The following are the descriptions of the reference numerals:

[0045] 1-installation structure; 11, 11'-guide groove; 111-first groove portion; 112-second groove portion; 12, 12'-limiting groove; 13'-extension portion; 2-auxiliary static spring; 21, 21'-second rod section; 211-rod portion; 212-thinning portion; 221, 221'-first rod section; 222, 222'-transverse section; 223, 223'-vertical section; 224-avoidance section; 2a-first auxiliary static spring; 2b-second auxiliary static spring; 3-auxiliary dynamic spring; 4-insulating seat; 41-bottom plate; 5-static contact; 6-active spring; 7-yoke iron plate; 8-push rod; 81-fixing portion; 9-housing; 10-iron cup; 20-insulating cover; 201-raised portion; 30-sealing adhesive layer. DETAILED DESCRIPTION

[0046] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0047] See also Figures 1 to 13 As shown, this embodiment provides a relay, including a mounting structure 1 and an auxiliary static spring 2, the auxiliary static spring 2 is installed on the mounting structure 1, the mounting structure 1 is provided with a limiting portion, and the auxiliary static spring 2 is provided with a limiting matching portion, and the limiting matching portion cooperates with the limiting portion to limit the movement of the auxiliary static spring relative to the mounting structure 1.

[0048] The relay provided in this embodiment is provided with a mounting structure 1, a limiting portion is provided on the mounting structure 1, and a limiting matching portion is provided on the auxiliary static spring. The matching between the limiting matching portion and the limiting portion is utilized to limit the movement of the auxiliary static spring relative to the mounting structure 1, thereby achieving stable installation of the auxiliary static spring.

[0049] In one embodiment, the relay further includes an insulating cover 20, an insulating seat 4, and an auxiliary dynamic spring 3. The insulating cover 20 is connected to the insulating seat 4. The bottom of the insulating cover 20 is an open end, and a portion of the insulating seat 4 is fixedly mounted within the open end. A seal is provided between the insulating cover 20 and the insulating seat 4. The auxiliary dynamic spring 3 is located in the space formed by the insulating cover and the insulating seat, and is configured to contact or separate from the auxiliary static spring 2.

[0050] In one embodiment, the relay further includes a static contact 5 and an active spring 6 , and the static contact 5 is mounted on the top of the insulating cover 20 .

[0051] Exemplarily, there are two static contacts 5, one of which serves as a terminal for current inflow and the other serves as a terminal for current outflow. The static contacts 5 are provided with a main static contact; an active contact can be provided on the active spring 6, and the active contact can contact or separate with the main static contact.

[0052] The relay also includes a yoke plate 7, a push rod 8, a moving iron core and a static iron core. The insulating seat 4 is installed on the yoke plate 7. The insulating seat 4 and the yoke plate 7 are provided with a through hole for the push rod 8 to pass through. One end of the push rod 8 is connected to the moving iron core, and the other end of the push rod 8 is connected to the active spring 6. The auxiliary dynamic spring 3 is installed on the push rod 8, and the auxiliary dynamic spring 3 moves with the active spring 6.

[0053] For example, see Figure 9 As shown, the push rod 8 is integrally formed with a fixing portion 81, and the auxiliary dynamic spring 3 and the fixing portion 81 can be installed together by injection molding. When the push rod 8 drives the active spring 6 to move, the auxiliary dynamic spring 3 moves with the active spring 6.

[0054] In a possible design, the mounting structure 1 is fixedly connected to the insulating seat 4 .

[0055] See also Figure 4 As shown, the insulating seat 4 includes a bottom plate 41, and the mounting structure 1 is fixedly connected to the bottom plate 41 of the insulating seat 4. Exemplarily, the mounting structure 1 and the insulating seat 4 are integrally formed.

[0056] See also Figure 1 As shown, the limiting portion includes a guide groove 11. From the bottom of the guide groove 11 to the groove mouth, the guide groove includes a first groove portion 111 and a second groove portion 112. The first groove portion 111 is connected to the second groove portion 112, and the width of the first groove portion 111 is greater than the width of the second groove portion 112; the auxiliary static spring includes a first rod segment 221 and a second rod segment 21. The second rod segment is connected to the first rod segment, and the second rod segment 21 can contact the auxiliary dynamic spring 3; the first rod segment 221 is inserted into the first groove portion 111, and along the width direction of the guide groove 11, the width of the first rod segment 221 is greater than the width of the second groove portion 112.

[0057] The second rod segment 21 includes a rod portion 211 and a thinning portion 212. Along the width direction of the guide groove, the width of the thinning portion is smaller than the width of the first rod segment. The width of the thinning portion is adapted to the width of the second groove portion so that the thinning portion can move along the extension direction of the second groove portion.

[0058] For example, during assembly, Figure 1 Install the auxiliary static spring 2 on the mounting structure 1 from top to bottom in the direction of arrow F. Specifically, insert the first rod section into the first groove 111 and move along the first groove 111. Figure 8 As shown, after assembly, the surface of the first rod segment 221 facing the second groove portion 112 serves as part of the position-limiting mating portion, mating with the groove wall of the second groove portion 112. The end of the second groove portion 112 connected to the first groove wall can stop the first rod segment 221 within the first groove portion 111, preventing the first rod segment from escaping from the second groove portion 112 along the X-axis. At the same time, the side wall of the thinned portion 212 serves as another part of the position-limiting mating portion, mating with the groove wall of the second groove portion 112, and the groove wall of the second groove portion 112 can limit the movement of the first rod segment along the Y-axis.

[0059] In this possible design, the limiting portion also includes a limiting groove 12, which is connected to the guide groove 11; a portion of the second rod segment 21 is limited in the limiting groove 12, and the portion of the rod portion 211 outside the limiting groove can contact the auxiliary dynamic spring.

[0060] By limiting and fixing a part of the second rod segment in the limiting groove 12, it is ensured that the second rod segment can be stably in the limiting groove 12 when in contact with the auxiliary dynamic spring 3, and is not prone to shaking and displacement, thereby ensuring that the auxiliary dynamic spring 3 and the rod portion 211 can still be in reliable contact after multiple engagements.

[0061] In this embodiment, the auxiliary static spring is a rod-shaped structure; the cross-section of the rod portion 211 is circular, and the circumferential surface of the rod portion 211 can contact the auxiliary dynamic spring 3. In other words, the arc surface of the rod portion 211 outside the limiting groove 12 can contact the auxiliary dynamic spring 3. When the auxiliary dynamic spring 3 tilts during movement, it can still maintain good contact with the arc surface of the rod portion 211.

[0062] It should be understood that the cross-section of the first rod segment may be circular or rectangular.

[0063] In this embodiment, the first rod segment and the second rod segment are integrally formed, and the cross-sections of the two are identical in shape. Except for the thinned portion 212 , the cross-sections are substantially the same in size.

[0064] In this embodiment, the auxiliary static spring is an integrally formed structure, which is not only easy to process but also can improve the overall structural strength of the auxiliary static spring and reduce the risk of breakage.

[0065] In one embodiment, the extending direction of the limiting groove 12 is perpendicular to the extending direction of the guide groove 11, which is convenient for processing and assembly. Of course, in other embodiments, the extending direction of the limiting groove 12 may not be perpendicular to the extending direction of the guide groove 11.

[0066] In one embodiment, a fixing hole is provided at the top of the insulating cover 20, and a positioning structure is provided on the surface of the top of the insulating cover facing the insulating seat. The auxiliary static spring further includes a third rod segment, which includes a transverse segment 222 and a vertical segment 223. One end of the transverse segment 222 is connected to the first rod segment 221, and the other end of the transverse segment 222 is connected to the vertical segment 223. The vertical segment 223 is inserted into the fixing hole, and the free end of the vertical segment 223 is located outside the insulating cover 20. This allows signal detection to be achieved, and the second rod segment 21 is pressed and fixed in the limiting groove.

[0067] The vertical section 223 of the auxiliary static spring is passed through the fixing hole, and the second rod section 21 is installed in the limiting groove 12. After the insulating cover 20 is installed on the insulating seat 4, the positioning structure can abut against the horizontal section, thereby pressing and fixing the second rod section in the limiting groove, further realizing the stable installation of the auxiliary static spring.

[0068] In some embodiments, see Figure 4 As shown, the positioning structure includes a protrusion 201 , and the protrusion 201 abuts against the transverse section 222 .

[0069] Exemplarily, there are multiple protrusions 201. After the insulating cover 20 is installed on the insulating seat 4, the multiple protrusions 201 are spaced apart along the extension direction of the transverse section 222, so that pressure can be applied to the transverse section 222 more evenly, further improving the installation stability.

[0070] In one embodiment, see Figure 6 As shown, the vertical distance d1 between the free end of the vertical segment 223 and the center line of the static contact 5 is greater than the vertical distance d2 between the end where the first rod segment 221 is connected to the second rod segment 21 and the center line of the static contact 5. In this way, the free end of the vertical segment can be kept away from the main static contact, increasing the safety distance and thus improving the strong and weak electrical insulation performance.

[0071] The center line of the static contact 5 refers to the axis of the cylindrical static contact 5 .

[0072] Exemplarily, the transverse section 222 is parallel to the second rod section 21, and both the transverse section and the vertical section are located on the same side of the first connecting section 221. The end of the transverse section 222 connected to the vertical section is located below the fixing hole, ensuring that the vertical section 223 is inserted into the fixing hole in a direction parallel to the centerline of the static contact 5. This ensures that the free end of the vertical section is away from the main static contact, improving strong and weak electrical insulation performance; at the same time, it also facilitates assembly and improves installation stability.

[0073] It should be understood that if the first rod segment is directly led vertically upward to the outside of the insulating cover 20, the vertical distance between the lead-out end of the auxiliary static spring and the center line of the static contact 5 is equal to d2. Compared with the solution of setting the horizontal segment 222 so that the vertical segment 223 is passed through the fixing hole in a direction parallel to the center line of the static contact 5, it is closer to the main static contact and the safety distance may not be guaranteed.

[0074] In one embodiment, the auxiliary dynamic spring 3 is located on one side of the second rod segment near the top of the insulating cover 20, so that the auxiliary dynamic spring 3 and the auxiliary static spring form a normally closed auxiliary contact assembly. Specifically, the auxiliary dynamic spring 3 is located between the second rod segment and the transverse segment 222.

[0075] When the relay is not powered on, the moving iron core and the static iron core are separated, and the active contact and the main static contact are disconnected. At this time, the auxiliary moving spring is in contact with the auxiliary static spring; when the relay is powered on, the moving iron core and the static iron core are attracted, and the active contact and the main static contact are closed. At this time, the auxiliary moving spring and the auxiliary static spring are separated.

[0076] In other embodiments, the auxiliary movable spring 3 and the auxiliary static spring can also form a normally open contact assembly. When the relay is de-energized, the movable and static iron cores are separated, the active contact is disconnected from the main static contact, and the auxiliary movable spring and the auxiliary static spring are separated. When the relay is energized, the movable and static iron cores are attracted, the active contact and the main static contact are closed, and the auxiliary movable spring and the auxiliary static spring are in contact.

[0077] In this possible design, the auxiliary static spring also includes an avoidance section 224, which is connected between the first rod section 221 and the transverse section 222; the auxiliary dynamic spring 3 has a width direction, and along the width direction of the auxiliary dynamic spring, the avoidance section 224 extends from the first rod section 221 toward away from the push rod, so that the vertical distance between the transverse section 222 and the axis of the push rod 8 is greater than the distance between the second rod section 21 and the axis of the push rod 8.

[0078] For example, the width direction of the auxiliary dynamic spring 3 is perpendicular to the second rod segment 21. During assembly, the auxiliary static spring 3 is typically installed first, followed by the push rod 8 with the auxiliary dynamic spring 3. When installing the push rod 8, to prevent interference between the auxiliary dynamic spring 3 and the transverse segment 222, a relief segment 224 is formed at the end of the first rod segment 221 away from the second rod segment. This relief segment 224 extends from the first rod segment 221 away from the push rod 8 along the width direction of the auxiliary dynamic spring 3, ensuring that the vertical distance between the transverse segment 222 and the axis of the push rod 8 is greater than the distance between the second rod segment and the axis of the push rod 8. This ensures that the auxiliary dynamic spring 3 can move with the push rod 8 below the transverse segment 222.

[0079] In one embodiment, the projection of one side of the auxiliary dynamic spring 3 away from the push rod 8 in the setting plane is located on the side of the projection of the transverse section 222 in the setting plane close to the push rod 8, wherein the setting plane is perpendicular to the axis of the push rod 8.

[0080] Because push rod 8 reciprocates under the drive of the moving iron core, a certain clearance exists between the circumferential surface of push rod 8 and the walls of the through-holes in insulating seat 4 and yoke plate 7, but this clearance should not be too large. Push rod 8 is tilted slightly before downward assembly to ensure that the auxiliary dynamic spring 3 does not interfere with the second connecting section 222. Regardless of whether push rod 8 is tilted, as long as the projection of the side of the auxiliary dynamic spring 3 away from the push rod 8 in the set plane is located on the side of the projection of the transverse section 222 in the set plane that is closer to the push rod 8, the auxiliary dynamic spring 3 is guaranteed not to interfere with the transverse section 222 during assembly.

[0081] In one embodiment, see Figure 2 and Figure 4 As shown, there are two auxiliary static springs, designated as the first auxiliary static spring 2a and the second auxiliary static spring 2b. There are also two mounting structures 1, one of which is mounted with the first auxiliary static spring 2a, and the other with the second auxiliary static spring 2b. One end of the auxiliary dynamic spring 3 contacts or separates with the second segment of the first auxiliary static spring 2a, while the other end of the auxiliary dynamic spring 3 contacts or separates with the second segment of the second auxiliary static spring 2b. This creates a bridge-type auxiliary contact structure. Specifically, when the relay is not powered on, the moving iron core and the static iron core are separated, and the active contact and the main static contact are disconnected. At this time, one end of the auxiliary dynamic spring 3 is in contact with the first auxiliary static spring 2a, and the other end of the auxiliary dynamic spring 3 is in contact with the second auxiliary static spring 2b; when the relay is powered on, the moving iron core and the static iron core are attracted, and the moving iron core drives the push rod 8 to move, and the push rod 8 drives the active spring 6 to move, so that the active contact and the main static contact are closed; at the same time, the push rod 8 can also drive the auxiliary dynamic spring 3 to move, so that one end of the auxiliary dynamic spring 3 is separated from the first auxiliary static spring 2a, and the other end of the auxiliary dynamic spring 3 is separated from the second auxiliary static spring 2b.

[0082] In a second possible design, when the mounting structure is fixedly connected to the insulating seat, the limiting portion can also adopt other forms. For example, the limiting portion includes a first stop surface and a second stop surface, and the auxiliary static spring is limited and fixed between the first stop surface and the second stop surface, wherein the surface where the auxiliary static spring abuts the first stop surface and the second stop surface forms a limiting fitting portion.

[0083] Specifically, the limiting portion includes a guide groove 11 and a limiting groove 12. The limiting groove 12 is connected to the guide groove 11. At this time, the guide groove can be a straight groove, and the bottom of the guide groove forms a first stop surface. The limiting groove can be perpendicular to the guide groove, and the second stop surface is formed at the end of the limiting groove 12 away from the guide groove 11. After the auxiliary static spring 2 is installed on the mounting structure, the first rod segment 221 abuts against the first stop surface, and the end face of the free end of the second rod segment 21 abuts against the second stop surface.

[0084] In a third possible design, the mounting structure and the insulating cover are integrally formed.

[0085] See also Figures 10 to 13 As shown, the limiting portion includes a guide groove 11' formed on the inner wall of the insulating cover 20. From the bottom of the guide groove to the groove opening, the guide groove includes a first groove portion and a second groove portion. The first groove portion is connected to the second groove portion, and the width of the first groove portion is greater than the width of the second groove portion. The auxiliary static spring 2 includes a first rod segment 221', which is inserted into the first groove portion. Along the width direction of the guide groove, the width of the first rod segment is greater than the width of the second groove portion.

[0086] In the third possible design, the auxiliary static spring further includes a second rod segment 21 ′, the second rod segment 21 ′ is connected to the first rod segment 221 ′, and the second rod segment 21 ′ can contact the auxiliary dynamic spring 3 .

[0087] Exemplarily, the second rod segment is perpendicular to the first rod segment, and a portion of the second rod segment for contacting the auxiliary dynamic spring is located outside the guide groove.

[0088] In some embodiments, the length of the guide groove 11 ′ is smaller than the length of the first rod segment 221 ′. In this case, the portion of the second rod segment close to the first rod segment does not need to be flattened, and the first rod segment can be inserted into the first groove.

[0089] In other embodiments, the length of the guide groove 11' is greater than the length of the first rod segment 221'. In this case, the second rod segment 21' may also include a rod portion and a thinning portion. Along the width direction of the guide groove, the width of the thinning portion is smaller than the width of the first rod segment, and the width of the thinning portion is adapted to the width of the second groove portion so that the thinning portion can move along the extension direction of the second groove portion.

[0090] In this third possible design, the auxiliary static spring also includes a third rod segment, which includes a transverse segment 222' and a vertical segment 223'. One end of the transverse segment 222' is connected to the first rod segment 221', and the other end of the transverse segment 222' is connected to the vertical segment 223'. The vertical segment 223' is passed through a fixing hole at the top of the insulating cover.

[0091] The limiting portion further includes a limiting groove 12' formed in the top plate of the insulating cover 20. One end of the limiting groove 12' communicates with the guide groove 11', and the other end of the limiting groove 12' communicates with the fixing hole. The transverse section is limited to the limiting groove. For example, the transverse section and the limiting groove can have an interference fit to reduce the risk of the transverse section being dislodged from the limiting groove.

[0092] In order to further enhance the installation stability of the auxiliary static spring, glue can be applied between the transverse section and the groove wall of the limiting groove to achieve bonding and fixation.

[0093] In the third possible design, the auxiliary dynamic spring 3 is located on one side of the second rod segment 21 ′ close to the top of the insulating cover 20 , so that the auxiliary dynamic spring and the auxiliary static spring form a normally closed auxiliary contact assembly.

[0094] In a fourth possible design, when the mounting structure and the insulating cover are integrally formed, the auxiliary static spring 2 is limited and fixed between the hole wall of the fixing hole and the side wall of the insulating cover, wherein the hole wall of the fixing hole and the side wall of the insulating cover together form a limiting portion, and the surface where the auxiliary static spring abuts against the hole wall of the fixing hole and the side wall of the insulating cover forms a limiting fitting portion.

[0095] In this case, the guide groove 11' can be a straight groove. The top plate of the insulating cover is provided with an extension portion 13', which extends from the hole wall of the fixing hole away from the guide groove 11' toward the insulating seat to increase the contact area between the hole wall and the vertical section 223', thereby further enhancing the installation stability of the auxiliary static spring.

[0096] Of course, the side wall of the insulating cover 20 may not be provided with a guide groove.

[0097] In one embodiment, the relay provided in this embodiment may be a high voltage DC relay. Figure 4 As shown, the high-voltage DC relay also includes a shell 9 and an iron cup 10. The iron cup 10 is installed inside the shell 9. The insulating cover 20 and the insulating seat 4 are installed in the iron cup 10. A sealant layer 30 is provided between the shell 9 and the iron cup 10 and between the shell 9 and the insulating cover 20.

[0098] The insulating cover 20 is close to the opening of the iron cup 10, and the insulating seat 4 is close to the bottom of the iron cup 10. In this embodiment, the fixing hole is set at the top of the insulating cover 20, and there is no need to punch the side wall of the iron cup 10. The lead-out end of the auxiliary static spring can be directly led out from the top of the insulating cover 20, which is convenient for filling sealant for sealing.

[0099] For example, the sealant layer 30 may be cured epoxy glue.

[0100] For example, the insulating cover 20 may be made of ceramic, and the insulating seat 4 may be made of plastic.

[0101] It should be noted that when ceramic brazing sealing is adopted, the high voltage DC relay may not be provided with the iron cup 10 . In this case, the fixing hole may be provided on the side wall of the insulating cover 20 , and the auxiliary static spring may pass through the side wall of the insulating cover 20 .

[0102] In other embodiments, the relay is not limited to a high-voltage DC relay, but may also be other types of relays provided with an auxiliary contact structure.

[0103] Finally, it should be noted that the various embodiments / implementations provided by the present invention can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0104] In the embodiments of the utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. For those skilled in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0105] In the description of the utility model embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, it cannot be understood as a limitation on the utility model embodiments.

[0106] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0107] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Those skilled in the art will readily appreciate that various modifications and variations of the utility model embodiments are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the utility model embodiments shall be included within the scope of protection of the utility model embodiments.

Claims

1. A relay, characterized in that: It includes a mounting structure and an auxiliary static spring, the auxiliary static spring is installed on the mounting structure, the mounting structure is provided with a limiting portion, the auxiliary static spring is provided with a limiting matching portion, the limiting matching portion cooperates with the limiting portion to limit the movement of the auxiliary static spring relative to the mounting structure.

2. The relay according to claim 1, wherein: The limiting portion includes a guide groove, and in a direction from the groove bottom to the groove opening of the guide groove, the guide groove includes a first groove portion and a second groove portion, the first groove portion is connected to the second groove portion, and the width of the first groove portion is greater than the width of the second groove portion; The auxiliary static spring includes a first rod segment, the first rod segment is inserted into the first slot portion, and along the width direction of the guide slot, the width of the first rod segment is greater than the width of the second slot portion.

3. The relay according to claim 2, characterized in that The relay further comprises an insulating seat and an auxiliary dynamic spring; the mounting structure is fixedly connected to the insulating seat; The auxiliary static spring also includes a second rod segment, which is connected to the first rod segment and can contact the auxiliary dynamic spring; the second rod segment includes a rod portion and a thinning portion, and along the width direction of the guide groove, the width of the thinning portion is smaller than the width of the first rod segment, and the width of the thinning portion is adapted to the width of the second groove portion so that the thinning portion can move along the extension direction of the second groove portion.

4. The relay according to claim 3, characterized in that The limiting portion further includes a limiting groove, which is communicated with the guide groove; a portion of the second rod segment is limited in the limiting groove, and a portion of the rod portion located outside the limiting groove can contact the auxiliary dynamic spring.

5. The relay according to claim 4, characterized in that The relay further includes an insulating cover connected to the insulating seat, a fixing hole is provided on the top of the insulating cover, and a positioning structure is provided on the surface of the top of the insulating cover facing the insulating seat; The auxiliary static spring also includes a third rod segment, and the third rod segment includes a transverse segment and a vertical segment. One end of the transverse segment is connected to the first rod segment, and the other end of the transverse segment is connected to the vertical segment. The vertical segment is passed through the fixing hole, and the positioning structure abuts against the transverse segment to press and fix the second rod segment in the limiting groove.

6. The relay according to claim 5, characterized in that The positioning structure includes a protrusion that abuts against the transverse section.

7. The relay according to claim 5, characterized in that The relay further comprises a static contact, wherein the static contact is mounted on the top of the insulating cover; A vertical distance between a free end of the vertical segment and a center line of the static contact is greater than a vertical distance between an end of the first rod segment connected to the second rod segment and the center line of the static contact.

8. The relay according to claim 5, characterized in that The relay further comprises a push rod, and the auxiliary dynamic spring is mounted on the push rod; The auxiliary static spring also includes an avoidance section, which is connected between the first rod section and the transverse section; the auxiliary dynamic spring has a width direction, and along the width direction of the auxiliary dynamic spring, the avoidance section extends from the first rod section toward away from the push rod, so that the vertical distance between the transverse section and the axis of the push rod is greater than the distance between the second rod section and the axis of the push rod.

9. The relay according to claim 2, wherein: The relay further comprises an insulating cover and an auxiliary dynamic spring, and the mounting structure is integrally formed with the insulating cover; The auxiliary static spring further includes a second rod segment, the second rod segment is connected to the first rod segment, and the second rod segment can contact the auxiliary dynamic spring.

10. The relay according to claim 9, characterized in that A fixing hole is provided at the top of the insulating cover; the auxiliary static spring also includes a third rod segment, the third rod segment includes a transverse segment and a vertical segment, one end of the transverse segment is connected to the first rod segment, the other end of the transverse segment is connected to the vertical segment, and the vertical segment is passed through the fixing hole.

11. The relay according to claim 10, characterized in that The limiting portion further includes a limiting groove, one end of which is communicated with the guide groove, and the other end of which is communicated with the fixing hole, and the transverse section is limited in the limiting groove.

12. The relay according to any one of claims 5 to 11, characterized in that: The auxiliary dynamic spring is located on one side of the second rod segment close to the top of the insulating cover, so that the auxiliary dynamic spring and the auxiliary static spring form a normally closed auxiliary contact assembly.

13. The relay according to claim 1, wherein: The relay also includes an insulating seat, and the mounting structure is fixedly connected to the insulating seat; the limiting portion includes a first stop surface and a second stop surface, and the auxiliary static spring is limited and fixed between the first stop surface and the second stop surface, wherein the surface of the auxiliary static spring abutting against the first stop surface and the second stop surface forms the limiting fitting portion.

14. The relay according to claim 1, wherein: The relay also includes an insulating cover, the mounting structure is fixedly connected to the insulating cover, the insulating cover is provided with a fixing hole, and the auxiliary static spring is limited and fixed between the hole wall of the fixing hole and the side wall of the insulating cover, wherein the hole wall of the fixing hole and the side wall of the insulating cover together form the limiting portion, and the surface of the auxiliary static spring abutting against the hole wall of the fixing hole and the side wall of the insulating cover forms the limiting fitting portion.

Images