Auxiliary reed pushing structure and relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to an auxiliary reed pushing structure and a relay. The auxiliary reed pushing structure comprises a frame and a push rod, the frame is provided with a mounting position for mounting an auxiliary movable reed, the frame is provided with a containing groove, the groove bottom of the containing groove is provided with a through hole, and the groove wall of the containing groove is provided with a positioning part; the push rod is movably installed in the through hole to push the auxiliary movable reed, the circumferential surface of the push rod is provided with a protruding part, the protruding part is located at the groove bottom of the containing groove, the protruding part is provided with a positioning matching part, and the positioning matching part is matched with the positioning part so that the circumferential side wall of the protruding part and the groove wall of the containing groove can be arranged in a clearance mode. Therefore, the contact area and friction force between the circumferential side wall of the protruding part and the groove wall of the containing groove are reduced, chippings are not prone to being generated in the movement process of the push rod, meanwhile, resistance in the movement process of the push rod is reduced, and smoothness and stability when the push rod pushes the auxiliary movable contact spring are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control devices, in particular to an auxiliary spring pushing structure and 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). It 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 regulation, safety protection, and circuit conversion in the circuit.

[0003] In the related art, for high-voltage DC relays, an auxiliary contact structure is usually provided to meet the detection or monitoring function in the control circuit. The lead-out form of the auxiliary contact structure is generally to weld the auxiliary lead-out terminal on the insulating cover, and then insert the auxiliary lead-out terminal into the matching hole of the plastic frame, and connect it with the auxiliary spring by interference fit; the plastic frame is provided with a mounting hole, and a push rod is provided in the mounting hole. When the auxiliary contact structure is working, the up and down movement of the push rod drives the auxiliary moving spring to contact or separate with the auxiliary static spring. However, during the up and down movement of the push rod, rotation or shaking will occur. Especially in high-vibration application scenarios, the contact area between the circumferential side wall of the push rod and the hole wall of the mounting hole is large, the friction force is large, and debris is easily generated. Utility Model Content

[0004] The embodiment of the utility model provides an auxiliary spring pushing structure and a relay to reduce the contact area between the circumference of the push rod and the frame, and reduce the resistance during the movement of the push rod.

[0005] The auxiliary spring pushing structure provided by the embodiment of the utility model includes a frame and a push rod, the frame is provided with a mounting position for installing an auxiliary movable spring, the frame is provided with a receiving groove, the groove bottom of the receiving groove is provided with a through hole, and the groove wall of the receiving groove is provided with a positioning portion; the push rod is movably installed in the through hole to push the auxiliary movable spring, the circumferential surface of the push rod is provided with a protrusion, the protrusion is located on the groove bottom of the receiving groove, the protrusion is provided with a positioning matching portion, the positioning matching portion cooperates with the positioning portion to set a gap between the circumferential side wall of the protrusion and the groove wall of the receiving groove.

[0006] According to some embodiments of the present utility model, one of the positioning portion and the positioning matching portion is a protrusion, and the other is a groove.

[0007] According to some embodiments of the present utility model, the positioning portion is an arc-shaped protrusion, and the positioning matching portion is an arc-shaped groove.

[0008] According to some embodiments of the utility model, the number of the positioning portion and the number of the positioning matching portions are both two, the two positioning portions are arranged opposite to each other along the radial direction of the through hole, and the two positioning matching portions are arranged opposite to each other along the radial direction of the push rod.

[0009] According to some embodiments of the utility model, the circumferential side wall of the protrusion includes a first side wall and a second side wall, the first side wall and the second side wall are respectively located on both sides of the two positioning matching parts, and the projections of the first side wall and the second side wall in a set plane have different shapes, wherein the set plane is perpendicular to the axis of the push rod.

[0010] According to some embodiments of the present invention, the projection of the first side wall in the set plane is a straight line segment, and the projection of the second side wall in the set plane is a curved line segment.

[0011] According to some embodiments of the present invention, the areas of two end surfaces of the push rod that are opposite to each other along its axial direction are both smaller than the cross-sectional area between the two ends of the push rod.

[0012] According to some embodiments of the utility model, the frame includes a support frame and a support plate, the support frame is fixedly connected to the support plate, the mounting position and the accommodating groove are both arranged on the support plate, and a guide portion is provided on the surface of the support plate facing away from the support frame, and the guide portion is configured to cooperate with the protrusion to limit the rotation of the push rod around its own axis when the push rod moves toward the auxiliary movable spring.

[0013] According to some embodiments of the present invention, a projection of at least a portion of the guide portion on the support plate coincides with a projection of the positioning portion on the support plate.

[0014] The relay provided by the embodiment of the utility model includes an auxiliary moving reed, an auxiliary static reed and the auxiliary reed pushing structure, the auxiliary moving reed is installed at the installation position, the auxiliary static reed is installed on the frame, and the push rod can drive the auxiliary moving reed to move so that the auxiliary moving reed contacts or separates from the auxiliary static reed.

[0015] According to some embodiments of the utility model, the mounting position is a mounting groove, the bottom of the mounting groove is provided with a first rivet hole, the auxiliary movable spring is provided with a second rivet hole, and the auxiliary movable spring is installed in the mounting groove by rivets; the auxiliary movable spring is provided with a positioning structure, and the groove wall of the mounting groove is provided with a positioning matching structure, and the positioning matching structure cooperates with the positioning structure to align the second rivet hole with the first rivet hole.

[0016] According to some embodiments of the utility model, the auxiliary static reed includes an auxiliary normally open reed and an auxiliary normally closed reed, and the auxiliary normally open reed and the auxiliary normally closed reed are respectively located on both sides of the auxiliary movable reed, and the auxiliary movable reed can contact the auxiliary normally open reed, or the auxiliary movable reed can contact the auxiliary normally closed reed.

[0017] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0018] (1) The auxiliary spring pushing structure provided by the embodiment of the utility model, when in use, the auxiliary moving spring is installed in the installation position, and the push rod moves in the through hole, thereby driving the auxiliary moving spring to move. Since the circumferential surface of the push rod is provided with a protrusion, and the protrusion is located on the groove bottom of the accommodating groove, when the push rod is not subjected to external force, the push rod can fall under the action of its own gravity until the protrusion is located at the groove bottom of the accommodating groove and stops moving; since the groove wall of the accommodating groove is provided with a positioning portion, and the protrusion is provided with a positioning matching portion, the positioning matching portion cooperates with the positioning portion, so that even in high-vibration application scenarios, the gap between the circumferential side wall of the protrusion and the groove wall of the accommodating groove can be ensured, thereby reducing the contact area and friction between the circumferential side wall of the protrusion and the groove wall of the accommodating groove, and it is not easy to generate debris during the movement of the push rod. At the same time, the resistance during the movement of the push rod is reduced, ensuring the smoothness and stability of the push rod when pushing the auxiliary moving spring.

[0019] (2) The auxiliary spring pushing structure provided in the embodiment of the utility model has a guide portion provided on the surface of the support plate away from the support frame. When the push rod moves toward the auxiliary moving spring, the guide portion cooperates with the protruding portion, thereby limiting the push rod from rotating around its own axis. At the same time, the risk of the push rod being stuck and unable to return to its original position due to tilting can be reduced, thereby ensuring that the push rod can move stably.

[0020] (3) The circumferential side wall of the protrusion in the embodiment of the utility model includes a first side wall and a second side wall, and the first side wall and the second side wall are respectively located on both sides of the two positioning matching parts, and the projection shapes of the first side wall and the second side wall in the set plane are different, wherein the set plane is perpendicular to the axis of the push rod, thereby preventing the push rod from being installed incorrectly and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure shows a schematic diagram of the structure of the auxiliary spring push structure provided by the embodiment of the utility model;

[0022] Figure 2 It is shown that Figure 1 A cross-sectional view along line AA;

[0023] Figure 3The structure diagram of the frame in the auxiliary spring pushing structure provided by the embodiment of the utility model is shown;

[0024] Figure 4 Shown is a top view of a frame in an embodiment of the utility model;

[0025] Figure 5 It is shown that Figure 4 A cross-sectional view along line BB;

[0026] Figure 6 The figure shows a schematic diagram of the structure of a push rod in the auxiliary spring pushing structure provided by an embodiment of the utility model;

[0027] Figure 7 Shown is a top view of a push rod in an embodiment of the utility model;

[0028] Figure 8 The figure shows a schematic diagram of the structure of the auxiliary spring push structure and the auxiliary spring provided by the embodiment of the utility model;

[0029] Fig. 9 It is shown that Figure 8 A top view of

[0030] Fig.10 It is shown that Fig. 9 A cross-sectional view along line CC;

[0031] Fig.11 Shown is a top view of a relay provided by an embodiment of the utility model;

[0032] Fig.12 It is shown that Fig.11 Cross-sectional view along line DD.

[0033] The following are the descriptions of the reference numerals:

[0034] 1-frame; 11-support plate; 111-first mounting position; 1111-first rivet hole; 1112-arc-shaped depression; 112-second mounting position; 113-third mounting position; 114-accommodating groove; 1141-through hole; 1142-positioning portion; 115-guide portion; 1151-protruding extension portion; 1152-groove wall extension portion; 12-support frame; 2-push rod; 21-protruding portion; 211-positioning Matching part; 212-first side wall; 213-second side wall; 214-transition side wall; 31-auxiliary moving spring; 311-arc-shaped protrusion; 32-auxiliary normally open spring; 33-auxiliary normally closed spring; 41-insulating cover; 42-insulating seat; 43-sealing member; 44-yoke iron plate; 45-frame plate; 5-static contact; 6-static iron core; 71-moving iron core; 72-pushing rod; 73-active spring; 74-U-shaped bracket. DETAILED DESCRIPTION

[0035] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0036] See also Figures 1 to 12 As shown, this embodiment provides an auxiliary spring pushing structure, including a frame 1 and a push rod 2, the frame 1 is provided with a mounting position for installing an auxiliary moving spring 31, the frame 1 is provided with a receiving groove 114, the bottom of the receiving groove 114 is provided with a through hole 1141, and the groove wall of the receiving groove 114 is provided with a positioning portion 1142; the push rod 2 is movably installed in the through hole 1141 to push the auxiliary moving spring 31, the circumferential surface of the push rod 2 is provided with a protrusion 21, the protrusion 21 is located on the groove bottom of the receiving groove 114, the protrusion 21 is provided with a positioning matching portion 211, the positioning matching portion 211 cooperates with the positioning portion 1142, so that a gap is set between the circumferential side wall of the protrusion 21 and the groove wall of the receiving groove 114.

[0037] The auxiliary spring pushing structure provided in this embodiment, when in use, installs the auxiliary moving spring 31 at the installation position, and the push rod 2 moves in the through hole 1141, so as to drive the auxiliary moving spring 31 to move. Since the circumferential surface of the push rod 2 is provided with a protrusion 21, and the protrusion 21 is located on the bottom of the receiving groove 114, when the push rod 2 is not subjected to external force, the push rod 2 can fall under the action of its own gravity until the protrusion 21 is located at the bottom of the receiving groove 114 and stops moving; since the groove wall of the receiving groove 114 is provided with a positioning portion 1142, The protrusion 21 is provided with a positioning matching portion 211, and the positioning matching portion 211 cooperates with the positioning portion 1142. Even in high-vibration application scenarios, the gap between the circumferential side wall of the protrusion 21 and the groove wall of the accommodating groove 114 can be ensured, thereby reducing the contact area and friction between the circumferential side wall of the protrusion 21 and the groove wall of the accommodating groove 114, making it difficult to generate debris during the movement of the push rod 2. At the same time, the resistance during the movement of the push rod 2 is reduced, ensuring the smoothness and stability of the push rod 2 when pushing the auxiliary dynamic spring 31.

[0038] It should be understood that in order to ensure that the push rod 2 can move smoothly along its own axis, the positioning matching portion 211 and the positioning portion 1142 are not completely in contact, and most of the area between the two still has a certain gap. Only through the local contact between the two, the gap between the circumferential side wall of the protrusion 21 and the groove wall of the accommodating groove 114 is ensured. Due to the certain gap between the two, a certain elastic buffer space can be provided, thereby absorbing vibration and impact force. This helps to reduce the vibration impact on the relay during transportation or use, and improve its stability and reliability.

[0039] In one embodiment, see Figure 2 As shown, the frame 1 includes a support frame 12 and a support plate 11 , the support frame 12 is fixedly connected to the support plate 11 , and the mounting position and the receiving groove 114 are both arranged on the support plate 11 .

[0040] Exemplarily, the support plate 11 is generally rectangular in shape, the mounting position is arranged near one end of the support plate 11 in the length direction, the accommodating groove 114 is arranged approximately in the middle position of the support plate 11, and the support frame 12 includes two vertical plates, which are arranged at intervals along the length direction of the support plate 11. When in use, the frame 1 is installed in the insulating cover 41, wherein the support frame 12 is fixed on the insulating seat 42, and the support plate 11 is close to the top of the insulating cover 41.

[0041] In this embodiment, the support frame 12 and the support plate 11 are integrally formed. Exemplarily, the frame 1 is made of plastic, and the support frame 12 and the support plate 11 are integrally formed by injection molding.

[0042] In this embodiment, a mounting position for mounting an auxiliary static spring piece is further provided on the support plate 11 , wherein the mounting position for mounting the auxiliary static spring piece is provided close to the other end of the support plate 11 in the length direction.

[0043] In some embodiments, see Figures 3 to 7 As shown, the positioning portion 1142 is a protrusion, and the positioning matching portion 211 is a groove. The protrusion is limited in the groove, which can not only limit the push rod 2 from rotating around its own axis, but also limit the push rod 2 from shaking, ensuring that the gap between the circumferential side wall of the protrusion 21 and the groove wall of the receiving groove 114 is set. When vibration occurs, only partial contact between the protrusion and the groove wall of the groove will occur, and the circumferential side wall of the protrusion 21 and the groove wall of the receiving groove 114 will still not contact each other, thereby reducing the friction between the circumferential side wall of the protrusion 21 and the groove wall of the receiving groove 114, making it difficult to generate debris during the movement of the push rod 2. At the same time, the resistance during the movement of the push rod 2 is reduced, ensuring the smoothness and stability of the push rod 2 when pushing the auxiliary dynamic spring 31.

[0044] For example, the positioning portion 1142 is an arc-shaped protrusion, and the positioning matching portion 211 is an arc-shaped groove. This arc-shaped curved surface matching mode can reduce wear and resistance, and at the same time can provide a good positioning effect, ensure the accurate alignment of the positioning portion 1142 and the positioning matching portion 211, and prevent relative rotation, thereby improving assembly stability, reliability and service life.

[0045] In other embodiments, the positioning portion 1142 may also be a groove, and correspondingly, the positioning matching portion 211 is a protrusion.

[0046] In order to save costs and space, the thickness of the support plate 11 is limited, and therefore, the depth of the receiving groove 114 is also limited. For example, the depth of the receiving groove 114 is substantially equal to the thickness of the protrusion 21. When the push rod 2 moves toward the auxiliary moving spring 31, the protrusion 21 will gradually break away from the receiving groove 114. In order to ensure that the push rod 2 can move stably, a guide portion 115 is provided on the surface of the support plate 11 away from the support frame 12. When the push rod 2 moves toward the auxiliary moving spring 31, the guide portion 115 cooperates with the protrusion 21, thereby limiting the rotation of the push rod 2 around its own axis. At the same time, it can also reduce the risk of the push rod 2 being stuck and unable to return to its original position due to tilting.

[0047] Exemplarily, the guide portion 115 is integrally formed with the support plate 11 .

[0048] In one embodiment, a projection of at least a portion of the guide portion 115 on the support plate 11 coincides with a projection of the positioning portion 1142 on the support plate 11 .

[0049] For example, see Figure 1 As shown, the guide portion 115 includes a protruding extension portion 1151 and a groove wall extension portion 1152, the protruding extension portion 1151 and the groove wall extension portion 1152 are integrally formed, and the projection of the protruding extension portion 1151 on the support plate 11 coincides with the projection of the positioning portion 1142 on the support plate 11. This facilitates production and processing, simplifies the structure of the push rod 2, and enhances the guiding and anti-rotation effects.

[0050] In one embodiment, see Figure 5 and Figure 7 As shown, there are two positioning parts 1142 and two positioning matching parts 211, and the two positioning parts 1142 are arranged opposite to each other along the radial direction of the through hole 1141, and the two positioning matching parts 211 are arranged opposite to each other along the radial direction of the push rod 2. In this way, a more precise positioning effect can be achieved, ensuring that the positioning parts 1142 and the positioning matching parts 211 are accurately aligned in the radial direction, minimizing relative movement or deviation as much as possible, thereby ensuring the stability of the push rod 2 during movement.

[0051] See also Figure 1As shown, the number of the guide portions 115 is also two, and the two guide portions 115 are arranged opposite to each other along the radial direction of the through hole 1141 .

[0052] In one embodiment, the circumferential side wall of the protrusion 21 includes a first side wall 212 and a second side wall 213, which are respectively located on both sides of the two positioning matching portions 211, and the projection shapes of the first side wall 212 and the second side wall 213 in the set plane are different.

[0053] For example, see Figure 7 As shown, the two positioning matching parts 211 are both arc-shaped grooves, and the two arc-shaped grooves have a first end and a second end. The first ends of the two arc-shaped grooves are close to each other, and the second ends of the two arc-shaped grooves are close to each other, wherein the first side wall 212 is located between the first ends of the two arc-shaped grooves, and the second side wall 213 is located between the second ends of the two arc-shaped grooves. The projection shapes of the first side wall 212 and the second side wall 213 in the set plane are different, wherein the set plane is perpendicular to the axis of the push rod 2, so that the push rod 2 can be prevented from being installed incorrectly and the assembly efficiency is improved.

[0054] In some embodiments, see Figure 7 As shown, the circumferential side wall of the protrusion 21 further includes a transition side wall 214 , and the transition side wall 214 is located between the first side wall 212 and the first end of the arc-shaped groove.

[0055] In one embodiment, see Figure 7 As shown, the projection of the first side wall 212 in the set plane is a straight line segment, and the projection of the second side wall 213 in the set plane is a curved line segment. Exemplarily, the curved line segment is an arc segment.

[0056] Correspondingly, the groove wall of the accommodating groove 114 has a straight groove wall adapted to the first side wall 212 and an arc-shaped groove wall adapted to the second side wall 213 .

[0057] In this embodiment, the areas of the two end faces of the push rod 2 opposite to each other along its axial direction are smaller than the cross-sectional area between the two ends of the push rod 2, so that the contact area between the push rod 2 and the U-shaped bracket and the auxiliary dynamic spring 31 can be reduced, thereby reducing friction and heat conduction.

[0058] This embodiment also provides a relay, including an auxiliary moving reed 31, an auxiliary static reed and an auxiliary reed pushing structure provided in this embodiment, the auxiliary moving reed 31 is installed in the installation position, the auxiliary static reed is installed on the frame 1, and the push rod 2 can drive the auxiliary moving reed 31 to move so that the auxiliary moving reed 31 contacts or separates from the auxiliary static reed.

[0059] The relay provided in this embodiment uses the auxiliary spring pushing structure provided in this embodiment. When the push rod 2 moves in the through hole 1141, it can drive the auxiliary moving spring 31 to move, so that the auxiliary moving spring 31 contacts or separates from the auxiliary static spring. Since the circumferential surface of the push rod 2 is provided with a protrusion 21, and the protrusion 21 is located on the bottom of the accommodating groove 114, when the push rod 2 is not subjected to external force, the push rod 2 can fall under the action of its own gravity until the protrusion 21 is located at the bottom of the accommodating groove 114 and stops moving; since the groove wall of the accommodating groove 114 is provided with a positioning portion 1142, and the protrusion 21 is provided with a positioning matching portion 211, through the cooperation between the positioning matching portion 211 and the positioning portion 1142, even in high-vibration application scenarios, the gap between the circumferential side wall of the protrusion 21 and the groove wall of the accommodating groove 114 can be ensured, thereby reducing the contact area and friction between the circumferential side wall of the protrusion 21 and the groove wall of the accommodating groove 114, and it is not easy to generate debris during the movement of the push rod 2. At the same time, the resistance during the movement of the push rod 2 is reduced, ensuring the smoothness and stability of the push rod 2 when pushing the auxiliary dynamic spring 31.

[0060] In one embodiment, see Figures 8 to 10 As shown, the auxiliary static reed includes an auxiliary normally open reed 32 and an auxiliary normally closed reed 33, and the auxiliary normally open reed 32 and the auxiliary normally closed reed 33 are respectively located on both sides of the auxiliary movable reed 31, and the auxiliary movable reed 31 can contact the auxiliary normally open reed 32, or the auxiliary movable reed 31 can contact the auxiliary normally closed reed 33.

[0061] In this embodiment, the support plate 11 is further provided with mounting positions for mounting the auxiliary normally-open reed 32 and the auxiliary normally-closed reed 33 .

[0062] See also Figure 1 As shown, in order to clearly describe the technical solution of this embodiment, the installation position for installing the auxiliary dynamic spring 31 is named the first installation position 111, the installation position for installing the auxiliary normally open spring 32 is named the second installation position 112, and the installation position for installing the auxiliary normally closed spring 33 is named the third installation position 113.

[0063] The first mounting position 111 is disposed near one end of the support plate 11 in the length direction, and the second mounting position 112 and the third mounting position 113 are disposed near the other end of the support plate 11 in the length direction. The portion of the auxiliary normally open spring 32 for contacting the auxiliary movable spring 31 is located above the auxiliary movable spring 31, and the portion of the auxiliary normally closed spring 33 for contacting the auxiliary movable spring 31 is located below the auxiliary movable spring 31.

[0064] In one embodiment, see Figure 1As shown, the first mounting position 111 is a mounting groove, a first rivet hole 1111 is provided at the bottom of the mounting groove, a second rivet hole is provided at the auxiliary movable spring 31, and the auxiliary movable spring 31 is installed in the mounting groove by rivets; the auxiliary movable spring 31 is provided with a positioning structure, and a positioning matching structure is provided at the groove wall of the mounting groove, and the positioning matching structure cooperates with the positioning structure to align the second rivet hole with the first rivet hole 1111.

[0065] For example, see Figure 1 and Fig. 9 As shown, the positioning structure is an arc-shaped protrusion 311 , and the positioning matching structure is an arc-shaped recess 1112 .

[0066] Exemplarily, two ribs are arranged on the support plate 11 in parallel and at intervals, and the two ribs and the upper surface of the support plate 11 together form a mounting groove, and the distance between the two ribs is adapted to the width of the auxiliary movable spring 31, which can prevent the auxiliary movable spring 31 from rotating around the axis of the rivet; the arc-shaped recess 1112 is provided with a rib close to the surface of another rib.

[0067] In this embodiment, there are two positioning structures, and the two positioning structures are relatively arranged along the width direction of the auxiliary movable spring 31; there are two positioning matching structures, that is, each convex rib is provided with a positioning matching structure, and the two positioning matching structures are respectively matched with the two positioning structures to ensure that the second rivet hole is aligned with the first rivet hole 1111 to facilitate riveting, thereby improving assembly efficiency.

[0068] It should be noted that the structures of the second installation position 112 and the third installation position 113 are similar to the structure of the first installation position 111 , and will not be described in detail herein.

[0069] In one embodiment, see Fig.11 and Fig.12 As shown, the relay also includes an insulating cover 41, an insulating seat 42 and a sealing member 43. The insulating cover 41 has a first end and a second end that are axially opposite to each other. Two stationary contacts 5 are installed at the first end, wherein one stationary contact 5 serves as a terminal for current inflow, and the other stationary contact 5 serves as a terminal for current outflow. The second end of the insulating cover 41 is an open end, and a part of the insulating seat 42 is fixedly installed in the open end. The sealing member 43 is located between the insulating cover 41 and the insulating seat 42.

[0070] The relay also includes a yoke plate 44 and a frame plate 45, the yoke plate 44 is sealed and connected to the second end of the insulating cover 41 through the frame plate 45 to enclose a first vacuum chamber; a metal shell is connected to the side of the yoke plate 44 away from the insulating cover 41 to form a second vacuum chamber; the yoke plate 44 is provided with a through hole 1141 for connecting the first vacuum chamber and the second vacuum chamber; the relay also includes a static iron core 6, a moving iron core 71, a push rod 72, an active spring 73 and a U-shaped bracket 74, the static iron core 6 is fixedly connected to the hole wall of the through hole 1141; the moving iron core 71 is located in the second vacuum chamber, the active spring 73 is located in the first vacuum chamber, one end of the push rod 72 is connected to the moving iron core 71, and the other end of the push rod 72 is connected to the active spring 73; the U-shaped bracket 74 is arranged on the active spring 73 and moves with the active spring 73; the moving iron core 71 can be attracted or separated from the static iron core 6, so that the moving contact on the active spring 73 is in contact with or disconnected from the static contact on the static contact 5.

[0071] Exemplarily, when the moving iron core 71 is attracted to the stationary iron core 6, the moving contact on the active spring 73 contacts the stationary contact on the stationary contact 5. At the same time, the U-shaped bracket 74 pushes the push rod 2 to move, so that the push rod 2 drives the auxiliary moving spring 31 to move, thereby making the auxiliary moving spring 31 contact the auxiliary normally open spring 32.

[0072] When the moving iron core 71 is separated from the static iron core 6, the moving contact on the active spring 73 is disconnected from the static contact on the static contact 5. At the same time, the U-shaped bracket 74 moves away from the push rod 2. The push rod 2 falls back under the action of its own gravity and separates from the auxiliary moving spring piece 31, so that the auxiliary moving spring piece 31 is separated from the auxiliary normally open spring piece 32 and contacts with the auxiliary normally closed spring piece 33.

[0073] It should be noted that the working principle of the relay and its auxiliary contact structure should be understandable to those skilled in the art, and is well known and easy to implement for those skilled in the art, so it will not be described in detail in this embodiment.

[0074] In one embodiment, the relay further comprises a housing (not shown in the figure), and structures such as an insulating cover and a frame are arranged in the housing, and one end of the static contact away from the insulating cover passes through a mounting hole arranged in the housing.

[0075] In one embodiment, the insulating cover may be made of ceramic.

[0076] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided by the present utility model can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0077] In the embodiments of the utility model, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill 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.

[0078] In the description of the utility model embodiments, it needs to be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" 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 orientation, and therefore, cannot be understood as a limitation on the utility model embodiments.

[0079] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0080] The above are only preferred embodiments of the utility model embodiments, and are not intended to limit the utility model embodiments. For those skilled in the art, the utility model embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model embodiments shall be included in the protection scope of the utility model embodiments.

Claims

1. An auxiliary spring pushing structure, characterized in that: It includes a frame and a push rod, the frame is provided with a mounting position for installing an auxiliary movable spring, the frame is provided with a receiving groove, the groove bottom of the receiving groove is provided with a through hole, and the groove wall of the receiving groove is provided with a positioning portion; the push rod is movably installed in the through hole to push the auxiliary movable spring, the circumferential surface of the push rod is provided with a protrusion, the protrusion is located on the groove bottom of the receiving groove, the protrusion is provided with a positioning matching portion, the positioning matching portion cooperates with the positioning portion to set a gap between the circumferential side wall of the protrusion and the groove wall of the receiving groove.

2. The auxiliary spring pushing structure according to claim 1, characterized in that: One of the positioning portion and the positioning matching portion is a protrusion, and the other is a groove.

3. The auxiliary spring pushing structure according to claim 2, characterized in that: The positioning portion is an arc-shaped protrusion, and the positioning matching portion is an arc-shaped groove.

4. The auxiliary spring pushing structure according to any one of claims 1 to 3, characterized in that: The number of the positioning parts and the number of the positioning matching parts are both two, the two positioning parts are arranged opposite to each other along the radial direction of the through hole, and the two positioning matching parts are arranged opposite to each other along the radial direction of the push rod.

5. The auxiliary spring pushing structure according to claim 4, characterized in that: The circumferential side wall of the protrusion includes a first side wall and a second side wall, wherein the first side wall and the second side wall are respectively located on both sides of the two positioning matching parts, and the projections of the first side wall and the second side wall in a set plane have different shapes, wherein the set plane is perpendicular to the axis of the push rod.

6. The auxiliary spring pushing structure according to claim 5, characterized in that: The projection of the first side wall in the setting plane is a straight line segment, and the projection of the second side wall in the setting plane is a curved line segment.

7. The auxiliary spring pushing structure according to any one of claims 1 to 3, characterized in that: The areas of the two end surfaces of the push rod that are opposite to each other along the axial direction are both smaller than the cross-sectional area between the two ends of the push rod.

8. The auxiliary spring pushing structure according to any one of claims 1 to 3, characterized in that: The frame includes a support frame and a support plate, the support frame is fixedly connected to the support plate, the mounting position and the accommodating groove are both arranged on the support plate, and a guide portion is arranged on the surface of the support plate facing away from the support frame, and the guide portion is configured to cooperate with the protrusion when the push rod moves toward the auxiliary movable spring to limit the push rod from rotating around its own axis.

9. The auxiliary spring pushing structure according to claim 8, characterized in that: The projection of at least a portion of the guide portion on the support plate coincides with the projection of the positioning portion on the support plate.

10. A relay, characterized in that: It includes an auxiliary moving reed, an auxiliary static reed and an auxiliary reed pushing structure according to any one of claims 1 to 9, wherein the auxiliary moving reed is installed at the installation position, the auxiliary static reed is installed on the frame, and the push rod can drive the auxiliary moving reed to move so that the auxiliary moving reed contacts or separates from the auxiliary static reed.

11. The relay according to claim 10, characterized in that: The mounting position is a mounting groove, a first rivet hole is provided at the bottom of the mounting groove, a second rivet hole is provided at the auxiliary movable spring, and the auxiliary movable spring is mounted on the mounting groove by rivets; the auxiliary movable spring is provided with a positioning structure, a positioning matching structure is provided at the groove wall of the mounting groove, and the positioning matching structure cooperates with the positioning structure to align the second rivet hole with the first rivet hole.

12. The relay according to claim 10 or 11, characterized in that: The auxiliary static reed includes an auxiliary normally open reed and an auxiliary normally closed reed, and the auxiliary normally open reed and the auxiliary normally closed reed are respectively located on both sides of the auxiliary movable reed, and the auxiliary movable reed can contact the auxiliary normally open reed, or the auxiliary movable reed can contact the auxiliary normally closed reed.

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