Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to a relay, which comprises an insulating cover and a frame, the insulating cover is provided with two static contacts, the frame is mounted inside the insulating cover and positioned between the two static contacts, an auxiliary contact component is arranged on the frame, the frame and the top of the insulating cover are arranged in a sealed manner, and the insulating cover is provided with an auxiliary contact component. Therefore, the auxiliary contact assembly is isolated from the static contact. The auxiliary contact assembly is arranged between the two static contacts, and the frame and the top of the insulating cover are arranged in a sealed manner, so that the auxiliary contact assembly is located in a closed space, the auxiliary contact assembly is isolated from the static contacts, and the auxiliary contact assembly is prevented from being polluted by main contact splashes generated in the working process of the relay; the auxiliary contact assembly is protected from being broken down by high voltage, and the service life of the relay is prolonged.

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). 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, relays are usually provided with auxiliary contact components to meet the detection or monitoring functions in the control circuit. Since the auxiliary contact circuit is installed close to the main circuit, it is easily affected by the arc generated when the main contact is actuated during the operation of the relay. The splash of the main contact will contaminate the auxiliary contact, causing the auxiliary contact to be broken down by high voltage. Utility Model Content

[0004] The embodiment of the utility model provides a relay to protect auxiliary contacts and increase the service life of the relay.

[0005] The relay provided by the embodiment of the utility model includes a relay, characterized in that it includes an insulating cover and a frame, the insulating cover is provided with two static contacts, the frame is installed inside the insulating cover, and the frame is located between the two static contacts, an auxiliary contact assembly is provided on the frame, and a seal is provided between the frame and the top of the insulating cover to isolate the auxiliary contact assembly from the static contacts.

[0006] According to some embodiments of the present invention, the frame is provided with a sealing member, and the sealing member is in close contact with the lower surface of the top of the insulating cover.

[0007] According to some embodiments of the utility model, the frame is provided with a mounting plate, a side of the mounting plate close to the insulating cover is provided with a frame, and the sealing member is provided on the periphery of the frame.

[0008] According to some embodiments of the utility model, a limiting convex strip is provided on a side of the mounting plate close to the insulating cover, and the limiting convex strip is located on a side of the sealing member away from the frame.

[0009] According to some embodiments of the present invention, the mounting plate has two opposite length sides and two opposite width sides, and both of the two length sides are provided with a first avoidance notch for avoiding the static contact.

[0010] According to some embodiments of the utility model, the side wall of the insulating cover is provided with an inner recess, and the inner recess is provided with a magnetic steel; the mounting plate is provided with a second avoidance notch adapted to the inner recess.

[0011] According to some embodiments of the utility model, the relay further includes a housing and a yoke clamp, the yoke clamp and the insulating cover are both installed inside the housing, and the yoke clamp is used to fix the magnetic steel to the inner recess.

[0012] According to some embodiments of the utility model, the outer shell includes a first shell and a second shell, the first shell is a cylindrical structure, and the second shell is connected to the first shell; the inner surface of the second shell is provided with a positioning groove, and the yoke clamp is provided with a positioning protrusion, and the positioning protrusion is limited to the positioning groove.

[0013] According to some embodiments of the utility model, the auxiliary contact assembly includes an auxiliary moving reed and an auxiliary static reed, the auxiliary moving reed is installed at one end of the frame in the length direction, and the auxiliary static reed is installed at the other end of the frame in the length direction; the moving contact of the auxiliary moving reed can contact or separate with the static contact of the auxiliary static reed.

[0014] According to some embodiments of the utility model, the auxiliary movable spring has a first end and a second end opposite to each other, the first end of the auxiliary movable spring is used to contact the static contact of the auxiliary static spring, and the second end of the auxiliary movable spring is installed with a first auxiliary lead-out end; the portion between the first end and the second end of the auxiliary movable spring is connected to the frame through a rivet, and the distance between the rivet and the first end is greater than the distance between the rivet and the second end;

[0015] The relay further comprises a stop gasket, which is fixed to the side of the auxiliary moving spring away from the frame through the rivet, and the stop gasket can be elastically deformed to apply pressure to a set position of the auxiliary moving spring, wherein the set position is located between the rivet and the first end.

[0016] According to some embodiments of the utility model, the stop gasket includes a first plate portion and a second plate portion, the first plate portion is connected to the second plate portion, the length of the first plate portion is greater than the length of the second plate portion, the first plate portion is provided with a through hole for the rivet to pass through, and the first plate portion can undergo elastic deformation so that the end face of the free end of the second plate portion is in surface contact with the auxiliary dynamic spring.

[0017] According to some embodiments of the utility model, the auxiliary movable reed includes a first reed, a second reed and a third reed connected in sequence, the free end of the first reed is the first end of the auxiliary movable reed, the second reed is arranged at an obtuse angle to the first reed and the third reed, the end of the third reed away from the second reed is provided with a clamping portion, and the first auxiliary lead-out end is clamped and fixed to the clamping portion;

[0018] An end surface of the free end of the second plate portion abuts against a position of the third reed close to the second reed.

[0019] According to some embodiments of the utility model, the frame is provided with 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 through the rivet; the auxiliary movable spring is provided with a positioning structure, 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.

[0020] 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 arranged at intervals along the width direction of the frame; the contact of the auxiliary normally open reed and the contact of the auxiliary normally closed reed are respectively located on both sides of the auxiliary movable reed; the side of the auxiliary movable reed close to the auxiliary normally open reed is provided with a first movable contact, and the side of the auxiliary movable reed close to the auxiliary normally closed reed is provided with a second movable contact;

[0021] The auxiliary moving reed is configured to switch between a first station and a second station, wherein, in the first station, the first moving contact is separated from the static contact of the auxiliary normally open reed, and the second moving contact is in contact with the static contact of the auxiliary normally closed reed, and in the second station, the first moving contact is in contact with the static contact of the auxiliary normally open reed, and the second moving contact is separated from the static contact of the auxiliary normally closed reed.

[0022] According to some embodiments of the utility model, the relay further comprises a push rod; 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 so that the auxiliary moving spring is switched between the first station and the second station;

[0023] The circumferential surface of the push rod is provided with a protrusion, which is located on the bottom of the accommodating groove. The protrusion is provided with a positioning matching portion, which cooperates with the positioning portion to set a gap between the circumferential side wall of the protrusion and the groove wall of the accommodating groove.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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 positioning matching portion, 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.

[0028] 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.

[0029] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0030] The relay provided by the embodiment of the utility model arranges the auxiliary contact assembly between two stationary contacts. Due to the sealing arrangement between the frame and the top of the insulating cover, the auxiliary contact assembly is located in a closed space, thereby ensuring that the auxiliary contact assembly is isolated from the stationary contacts, preventing the main contact splashes generated during the operation of the relay from contaminating the auxiliary contact assembly, protecting the auxiliary contact assembly from being broken down by high voltage, and improving the service life of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is a top view of a relay provided by an embodiment of the utility model;

[0032] Figure 2 It is shown that Figure 1 A cross-sectional view along line AA;

[0033] Figure 3 It is shown that Figure 2 A partial enlarged view of point Ⅰ in the middle;

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

[0035] Figure 5What is shown is a schematic diagram of the structure of the insulating cover in the relay provided by the embodiment of the utility model;

[0036] Figure 6 Shown is a top view of an insulating cover in a relay provided by an embodiment of the utility model;

[0037] Figure 7 The figure shows a schematic diagram of the structure of a first yoke iron clamp in a relay provided by an embodiment of the utility model;

[0038] Figure 8 Shown is a bottom view of the second housing in the relay provided by the embodiment of the utility model;

[0039] Fig. 9 The figure shows a schematic diagram of the structure of the insulating cover, the magnetic steel and the yoke iron clamp in the embodiment of the utility model;

[0040] Fig.10 The figure shows a top view of the insulating cover, the magnetic steel and the yoke iron clamp in the embodiment of the utility model;

[0041] Fig.11 The figure shows a schematic diagram of the structure of the frame, the seal and the auxiliary contact assembly in the embodiment of the utility model;

[0042] Fig.12 Shown is a top view of the frame, seal and auxiliary contact assembly in the embodiment of the utility model;

[0043] Fig.13 It is shown that Fig.12 A cross-sectional view along line CC;

[0044] Fig.14 It is shown that Fig.13 A partial enlarged view of the middle II;

[0045] Fig.15 Shown is a top view of the frame and the push rod in the embodiment of the utility model;

[0046] Fig.16 What is shown is a schematic diagram of the structure of the push rod in the embodiment of the utility model;

[0047] Fig.17 Shown is a top view of a push rod in an embodiment of the utility model;

[0048] Fig.18 What is shown is a schematic structural diagram of a frame in an embodiment of the utility model.

[0049] The following are the descriptions of the reference numerals:

[0050] 1-insulating cover; 11-first inner recess; 12-second inner recess; 13-third inner recess; 14-fourth inner recess; 15-top plate; 2-frame; 21-mounting plate; 211-frame; 212-first convex strip; 213-second convex strip; 214-first avoidance gap; 215-second avoidance gap; 216-convex rib; 2161-arc-shaped depression; 217-accommodating groove; 2171-positioning part; 22-support frame; 3-static contact; 4-push rod; 41-protruding part; 411-positioning matching part; 412-first side wall; 413-second side wall; 414-transition side wall; 5-seal; 6-insulating seat; 71-first yoke iron clamp; 711-positioning protrusion; 72-second yoke iron clamp; 81-first magnetic steel; 82-second magnetic steel; 8 3-third magnetic steel; 84-fourth magnetic steel; 91-auxiliary moving spring; 911-first spring; 9111-first moving contact; 9112-second moving contact; 912-second spring; 913-third spring; 9131-clamping portion; 9132-arc-shaped protrusion; 92-auxiliary normally open spring; 93-auxiliary normally closed spring; 94-first auxiliary lead-out terminal; 95-second auxiliary lead-out terminal; 96-third auxiliary lead-out terminal; 10-stop gasket; 101-first plate portion; 102-second plate portion; 201-yoke iron plate; 202-frame plate; 203-static iron core; 204-moving iron core; 205-push rod; 206-active spring; 207-U-shaped bracket; 301-first shell; 302-second shell; 3021-positioning groove; 40-rivet. DETAILED DESCRIPTION

[0051] 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.

[0052] See also Figures 1 to 18 As shown, this embodiment provides a relay, including an insulating cover 1 and a frame 2, the insulating cover 1 is provided with two static contacts 3, the frame 2 is installed inside the insulating cover 1, and the frame 2 is located between the two static contacts 3, an auxiliary contact assembly is provided on the frame 2, and a seal is provided between the frame 2 and the top of the insulating cover 1 to isolate the auxiliary contact assembly from the static contacts 3.

[0053] In this embodiment, an active spring 206 is further provided inside the insulating cover 1. During the operation of the relay, the main contact on the active spring 206 contacts or disconnects with the main contact on the static contact 3 for many times, which will produce main contact splashes.

[0054] The relay provided in this embodiment arranges the auxiliary contact assembly between the two stationary contacts 3. Due to the sealing arrangement between the frame 2 and the top of the insulating cover 1, the auxiliary contact assembly is located in a closed space, thereby ensuring that the auxiliary contact assembly is isolated from the stationary contact 3, preventing the main contact splashes generated during the operation of the relay from contaminating the auxiliary contact assembly, protecting the auxiliary contact assembly from being broken down by high voltage, and improving the service life of the relay.

[0055] In this embodiment, the insulating cover may be a ceramic cover.

[0056] In one embodiment, the frame 2 is provided with a seal 5 , which is in close contact with the lower surface of the top of the insulation cover 1 .

[0057] For example, see Figure 3 and Figure 5 As shown, the insulating cover 1 includes a top plate 15 and a circumferential side wall, the top plate 15 and the circumferential side wall are integrally formed, and the top plate 15 is provided with two mounting holes, respectively used to mount two stationary contacts 3. The frame 2, the seal 5 and the top plate 15 of the insulating cover 1 together form a closed space, the auxiliary contact assembly is located in the closed space, and the two stationary contacts 3 are located outside the closed space, thereby ensuring that the auxiliary contact assembly is isolated from the stationary contacts 3, preventing the main contact splashes generated during the operation of the relay from contaminating the auxiliary contact assembly, protecting the auxiliary contact assembly from being broken down by high voltage, and improving the service life of the relay.

[0058] In one embodiment, the frame 2 is provided with a mounting plate 21 , a side of the mounting plate 21 close to the insulating cover 1 is provided with a frame 211 , and the sealing member 5 is provided on the outer periphery of the frame 211 .

[0059] For example, see Figure 3 and Fig.11 As shown, the frame 211 is generally a rectangular frame, and the seal 5 can be a sealing ring, which is sleeved on the outer periphery of the frame 211. The height of the seal 5 in the direction perpendicular to the mounting plate 21 is greater than the height of the frame 211, that is, the upper surface of the seal 5 exceeds the upper surface of the frame 211. After assembly, it is ensured that the seal 5 can contact the top plate 15 of the insulating cover 1 and produce a certain amount of deformation, thereby achieving a sealing and insulating effect.

[0060] In one embodiment, a limiting convex strip is provided on one side of the mounting plate 21 close to the insulating cover 1, and the limiting convex strip is located on the side of the sealing member 5 away from the frame 211. In other words, a groove for installing the sealing member 5 is formed between the limiting convex strip and the frame 211, so that the sealing member 5 can be prevented from expanding and collapsing outwards during the contact process with the top plate 15 of the insulating cover 1, thereby ensuring a good sealing and insulating effect between the insulating cover 1 and the frame 2.

[0061] In addition, by providing the limiting convex strip, the creepage distance between the auxiliary contact assembly and the static contact can be increased, thereby further improving the insulation performance and extending the service life of the relay.

[0062] For example, see Figure 3 and Fig.11 As shown, the limiting ridges include a first ridge 212 and two second ridges 213 . The first ridge 212 is arranged on the outside of a short side of the frame 211 , and the two second ridges 213 are arranged on the outside of two long sides of the frame 211 .

[0063] In one embodiment, see Figure 2 As shown, the relay further comprises an insulating seat 6 , which is connected to the insulating cover 1 , and a sealing ring is arranged between the insulating seat 6 and the insulating cover 1 .

[0064] See also Fig.11 As shown, the frame 2 further includes a support frame 22, which is fixedly connected to the mounting plate 21. Exemplarily, the support frame 22 is integrally formed and arranged on the surface of the mounting plate 21 away from the seal 5. The support frame 22 is located on the insulating seat 6. After the insulating cover 1 and the insulating seat 6 are assembled, the frame 2 can be fixed on the insulating seat 6.

[0065] In one embodiment, the mounting plate 21 has two opposite length sides and two opposite width sides, and both length sides are provided with a first avoidance notch 214 for avoiding the stationary contact 3 .

[0066] See also Figure 4 and Fig.12 As shown, the first avoidance notch 214 is an arc-shaped notch, and the gap between the arc-shaped notch and the second convex strip 213 is small, so that the distance between the two static contacts 3 can be reduced as much as possible, thereby reducing the size of the insulating cover 1, and then reducing the overall size of the relay, which is conducive to miniaturization of the product.

[0067] In one embodiment, the circumferential side wall of the insulating cover 1 is provided with an inner concave portion, and the inner concave portion is provided with a magnetic steel; the mounting plate 21 is provided with a second avoidance notch 215 matched with the inner concave portion.

[0068] By providing an inner recess on the side wall of the insulating cover 1, a larger placement space is reserved for the magnetic steel, and the volume of the magnetic steel is increased as much as possible to enhance the arc extinguishing capability.

[0069] In order to make the insulating cover 1 concave inward, the mounting plate 21 forms a second avoidance notch 215 at a position corresponding to the inner concave portion. The second avoidance notch 215 is spaced apart from the first avoidance notch 214 to ensure the structural strength of the mounting plate 21.

[0070] In this embodiment, the relay also includes a shell and a yoke clamp, the shell includes a first shell 301 and a second shell 302, the first shell 301 is a cylindrical structure, and the second shell 302 is connected to the first shell 301; the yoke clamp is installed between the first shell 301 and the insulating cover 1, and the magnet is fixed in the inner recess by the yoke clamp to ensure that the magnet does not protrude from the outside of the insulating cover 1, thereby not affecting the external dimensions of the relay.

[0071] The yoke iron clamp and the insulating cover 1 are both installed inside the shell, and the yoke iron clamp is used to fix the magnetic steel in the inner recess.

[0072] See also Figure 8 As shown, the inner surface of the second housing 302 is provided with a positioning groove 3021, and the yoke clamp is provided with a positioning protrusion 711, and the positioning protrusion 711 is limited to the positioning groove 3021. Exemplarily, the number of the yoke clamps is two, and the two yoke clamps are named as the first yoke clamp 71 and the second yoke clamp 72 respectively.

[0073] For example, see Figure 6 As shown, there are four recessed portions, which are respectively named as the first recessed portion 11, the second recessed portion 12, the third recessed portion 13 and the fourth recessed portion 14, wherein the first recessed portion 11 and the third recessed portion 13 are respectively located on both sides of one stationary contact 3, and the second recessed portion 12 and the fourth recessed portion 14 are respectively located on both sides of another stationary contact 3.

[0074] It should be noted that the number of the inner recesses is not limited to four, but may also be one, two or three.

[0075] In one embodiment, see Figure 6 and Fig.10 As shown, the magnetic steel includes a first magnetic steel 81 and a second magnetic steel 82. The first magnetic steel 81 is located in the first inner recess 11, and the second magnetic steel 82 is located in the third inner recess 13. The polarities of the ends of the first magnetic steel 81 and the second magnetic steel 82 that are close to each other are opposite.

[0076] In this embodiment, the magnetic steel also includes a third magnetic steel 83 and a fourth magnetic steel 84, the third magnetic steel 83 is located in the second recessed portion 12, and the fourth magnetic steel 84 is located in the fourth recessed portion 14, and the polarities of the ends of the third magnetic steel 83 and the fourth magnetic steel 84 that are close to each other are opposite, wherein the third magnetic steel 83 has the same polarity as the end of the first magnetic steel 81 that is close to the insulating cover 1, and the fourth magnetic steel 84 has the same polarity as the end of the second magnetic steel 82 that is close to the insulating cover 1.

[0077] See also Fig.10As shown, the first yoke clamp 71 is used to fix the first magnetic steel 81 and the second magnetic steel 82 to the first inner recess 11 and the third inner recess 13 respectively, and the second yoke clamp 72 is used to fix the third magnetic steel 83 and the fourth magnetic steel 84 to the second inner recess 12 and the fourth inner recess 14 respectively.

[0078] In one embodiment, the auxiliary contact assembly includes an auxiliary moving spring 91 and an auxiliary static spring. The auxiliary moving spring 91 is installed at one end of the frame 2 in the length direction, and the auxiliary static spring is installed at the other end of the frame 2 in the length direction. The moving contact of the auxiliary moving spring 91 can contact or separate with the static contact of the auxiliary static spring to reflect the contact or disconnection state of the main contact.

[0079] In this embodiment, the auxiliary movable spring 91 has a first end and a second end opposite to each other. The first end of the auxiliary movable spring 91 is used to contact the static contact of the auxiliary static spring. The second end of the auxiliary movable spring 91 is installed with a first auxiliary lead-out terminal 94. One end of the first auxiliary lead-out terminal 94 is installed on the second end of the auxiliary movable spring 91. The other end of the first auxiliary lead-out terminal 94 passes through the top plate 15 of the insulating cover 1 to be welded with the signal line of the first auxiliary lead-out terminal 94. Fig.11 As shown, the portion between the first end and the second end of the auxiliary movable spring 91 is connected to the mounting plate 21 of the frame 2 via a rivet 40, and the distance between the rivet 40 and the first end is greater than the distance between the rivet 40 and the second end, thereby reducing the risk of fatigue fracture of the auxiliary movable spring 91 during multiple actions.

[0080] Since the auxiliary moving spring 91 is connected to the frame 2 by rivets, the force points are concentrated at the rivets. After the auxiliary moving spring 91 moves multiple times, the auxiliary moving spring 91 repeatedly rubs against the expanded part of the rivet, causing the rivet to loosen, which in turn causes the auxiliary moving spring 91 to move unstably and fail to reliably contact the static contact of the auxiliary static spring.

[0081] In order to prevent the rivet from loosening, in this embodiment, see Fig.13 and Fig.14 As shown, the relay further includes a stop washer 10, which is fixed to the side of the auxiliary moving spring 91 away from the frame 2 by a rivet 40, and the stop washer 10 can be elastically deformed to apply pressure to the set position of the auxiliary moving spring 91, and the set position is located between the rivet and the first end. In this way, the force point can be moved to the set position in the direction close to the first end. At this time, the rivet is basically not subjected to force, reducing the friction between the auxiliary moving spring 91 and the expansion part of the rivet, thereby preventing the rivet from loosening and shaking, and protecting the rivet.

[0082] In this embodiment, see Fig.14As shown, the stop gasket 10 includes a first plate portion 101 and a second plate portion 102, the first plate portion 101 is connected to the second plate portion 102, the length of the first plate portion 101 is greater than the length of the second plate portion 102, the first plate portion 101 is provided with a through hole for the rivet to pass through, and the first plate portion 101 can undergo elastic deformation so that the end face of the free end of the second plate portion 102 is in surface contact with the auxiliary dynamic spring 91.

[0083] Exemplarily, the first plate portion 101 and the second plate portion 102 are integrally formed, and there is a smooth transition between the first plate portion 101 and the second plate portion 102. The stop gasket 10 is placed on the auxiliary movable spring 91, wherein the free end of the second plate portion 102 faces the auxiliary movable spring 91, and then the first plate portion 101, the auxiliary movable spring 91 and the mounting plate 21 of the frame 2 are riveted together by rivets. After riveting, the first plate portion 101 undergoes elastic deformation to ensure that the end face of the free end of the second plate portion 102 is in surface contact with the auxiliary movable spring 91. When the auxiliary movable spring 91 is in motion, the stress-bending part of the auxiliary movable spring 91 is the position corresponding to the free end of the second plate portion 102.

[0084] In this embodiment, the rigidity of the stop washer 10 is greater than the rigidity of the auxiliary dynamic spring 91. Exemplarily, the material of the stop washer 10 can be stainless steel, and the material of the auxiliary dynamic spring 91 can be copper or copper alloy.

[0085] In this embodiment, see Fig.13 As shown, the auxiliary movable spring 91 includes a first spring 911, a second spring 912 and a third spring 913 connected in sequence, the free end of the first spring 911 is the first end of the auxiliary movable spring 91, the second spring 912 is arranged at an obtuse angle to the first spring 911 and the third spring 913, the end of the third spring 913 away from the second spring 912 is provided with a clamping portion 9131, and the first auxiliary lead-out end 94 is clamped and fixed to the clamping portion 9131; the end surface of the free end of the second plate portion 102 abuts against the position of the third spring 913 close to the second spring 912.

[0086] Exemplarily, the first reed 911, the second reed 912 and the third reed 913 are integrally formed, the first reed 911 and the third reed 913 are substantially parallel, the second reed 912 is arranged at an obtuse angle to the first reed 911 and the third reed 913, so that when the moving contact of the auxiliary moving reed 91 contacts the static contact of the auxiliary static reed below it, it can be more reliable.

[0087] The clamping portion 9131 includes two elastic arms that are integrally formed, and an insertion space is formed between the two elastic arms. The first auxiliary lead-out end 94 is inserted into the insertion space and clamped and fixed between the two elastic arms.

[0088] In this embodiment, the frame 2 is provided with a mounting groove, the bottom of the mounting groove is provided with a first rivet hole, the third spring leaf 913 is provided with a second rivet hole, and the third spring leaf 913 is installed in the mounting groove through a rivet 40; the third spring leaf 913 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.

[0089] For example, see Fig.12 and Fig.15 As shown, the positioning structure is an arc-shaped protrusion 9132 , and the positioning matching structure is an arc-shaped recess 2161 .

[0090] For example, see Fig.11 and Fig.12 As shown, two convex ribs 216 are arranged on the mounting plate 21 in parallel and at intervals. The two convex ribs 216 and the upper surface of the mounting plate 21 together form a mounting groove. The distance between the two convex ribs 216 is adapted to the width of the auxiliary movable spring 91, which can prevent the auxiliary movable spring 91 from rotating around the axis of the rivet; an arc-shaped recess 2161 is arranged on the surface of one convex rib 216 close to the other convex rib 216.

[0091] 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 91; there are two positioning matching structures, that is, each rib 216 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 to facilitate riveting, thereby improving assembly efficiency.

[0092] In one embodiment, see Fig.12 As shown, the auxiliary static spring includes an auxiliary normally open spring 92 and an auxiliary normally closed spring 93. In this embodiment, the mounting plate 21 of the frame 2 is also provided with a first mounting position for mounting the auxiliary normally open spring 92 and a second mounting position for mounting the auxiliary normally closed spring 93. The first mounting position and the second mounting position are arranged at intervals along the width direction of the mounting plate 21, so that the auxiliary normally open spring 92 and the auxiliary normally closed spring 93 are arranged at intervals along the width direction of the frame 2. It should be noted that the structures of the first mounting position and the second mounting position are similar to those of the mounting slot, and will not be repeated here.

[0093] An auxiliary static contact is provided at one end of the auxiliary normally open reed 92 and the auxiliary normally closed reed 93 close to the auxiliary moving reed 91, and the ends of the auxiliary normally open reed 92 and the auxiliary normally closed reed 93 away from the auxiliary moving reed 91 also have a clamping portion. The auxiliary contact assembly also includes a second auxiliary lead-out terminal 95 and a third auxiliary lead-out terminal 96. The second auxiliary lead-out terminal 95 is clamped and fixed in the clamping portion of the auxiliary normally open reed 92, and the third auxiliary lead-out terminal 96 is clamped and fixed in the clamping portion of the auxiliary normally closed reed 93.

[0094] See also Figures 11 to 13 As shown, the contacts of the auxiliary normally open reed 92 and the contacts of the auxiliary normally closed reed 93 are respectively located on both sides of the auxiliary movable reed 91; a first movable contact 9111 is provided on the side of the auxiliary movable reed 91 close to the auxiliary normally open reed 92, and a second movable contact 9112 is provided on the side of the auxiliary movable reed 91 close to the auxiliary normally closed reed 93; both the first movable contact 9111 and the second movable contact 9112 have contact surfaces, and the auxiliary movable reed 91 is configured to switch between a first station and a second station, wherein, in the first station, the contact surface of the first movable contact 9111 is separated from the static contact of the auxiliary normally open reed 92, and the contact surface of the second movable contact 9112 is in contact with the static contact of the auxiliary normally closed reed 93, and in the second station, the contact surface of the first movable contact 9111 is in contact with the static contact of the auxiliary normally open reed 92, and the contact surface of the second movable contact 9112 is separated from the static contact of the auxiliary normally closed reed 93.

[0095] In one embodiment, see Figure 2 and Figure 3 As shown, the relay also includes a yoke plate 201 and a frame sheet 202. The yoke plate 201 is sealed and connected to the bottom of the insulating cover 1 through the frame sheet 202 to enclose a first vacuum chamber; a metal shell is connected to the side of the yoke plate 201 away from the insulating cover 1 to form a second vacuum chamber; the yoke plate 201 is provided with a fixing hole for connecting the first vacuum chamber and the second vacuum chamber; the relay also includes a static iron core 203, a moving iron core 204, a push rod 205, an active spring 206 and a U-shaped bracket 207. The core 203 is fixedly connected to the hole wall of the fixed hole; the moving iron core 204 is located in the second vacuum chamber, the active spring 206 is located in the first vacuum chamber, one end of the push rod 205 is connected to the moving iron core 204, and the other end of the push rod 205 is connected to the active spring 206; the U-shaped bracket 207 is arranged on the active spring 206 and moves with the active spring 206; the moving iron core 204 can be attracted or separated from the static iron core 203, so that the moving contact on the active spring 206 is in contact with or disconnected from the static contact on the static contact 3.

[0096] Exemplarily, when the moving iron core 204 is separated from the static iron core 203, the moving contact on the active spring 206 is disconnected from the static contact on the static contact 3, the auxiliary moving spring piece 91 is in the first working position, and the push rod 4 is separated from the auxiliary moving spring piece 91. At this time, the first moving contact 9111 of the auxiliary moving spring piece 91 is in contact with the auxiliary normally closed spring piece 93, and the second moving contact 9112 of the auxiliary moving spring piece 91 is separated from the auxiliary normally open spring piece 92.

[0097] When the moving iron core 204 and the static iron core 203 are attracted, the moving contact on the active spring 206 contacts the static contact on the static contact 3. At the same time, the U-shaped bracket 207 pushes the push rod 4 to move, so that the push rod 4 drives the auxiliary moving spring piece 91 to move to the second working position, and then the first moving contact 9111 of the auxiliary moving spring piece 91 contacts the auxiliary normally open spring piece 92, and the second moving contact 9112 of the auxiliary moving spring piece 91 separates from the auxiliary normally closed spring piece 93.

[0098] In one embodiment, see Figures 15 to 17 As shown, the relay also includes a push rod 4; the frame 2 is provided with a receiving groove 217, the bottom of the receiving groove 217 is provided with a through hole, and the groove wall of the receiving groove 217 is provided with a positioning portion 2171; the push rod 4 is movably installed in the through hole so that the auxiliary movable spring 91 can switch between the first position and the second position; the circumferential surface of the push rod 4 is provided with a protrusion 41, the protrusion 41 is located on the groove bottom of the receiving groove 217, and the protrusion 41 is provided with a positioning matching portion 411, and the positioning matching portion 411 cooperates with the positioning portion 2171 so that a gap is set between the circumferential side wall of the protrusion 41 and the groove wall of the receiving groove 217.

[0099] The push rod 4 moves in the through hole, so as to drive the auxiliary moving spring 91 to move. Since the circumferential surface of the push rod 4 is provided with a protrusion 41, and the protrusion 41 is located on the bottom of the accommodating groove 217, when the push rod 4 is not subjected to external force, the push rod 4 can fall under the action of its own gravity until the protrusion 41 is located at the bottom of the accommodating groove 217 and stops moving; since the groove wall of the accommodating groove 217 is provided with a positioning portion 2171, and the protrusion 41 is provided with a positioning matching portion 411, the positioning matching portion 411 cooperates with the positioning portion 2171, so that even in high-vibration application scenarios, the gap between the circumferential side wall of the protrusion 41 and the groove wall of the accommodating groove 217 can be ensured, thereby reducing the contact area and friction between the circumferential side wall of the protrusion 41 and the groove wall of the accommodating groove 217, and it is not easy to generate debris during the movement of the push rod 4. At the same time, the resistance during the movement of the push rod 4 is reduced, ensuring the smoothness and stability of the push rod 4 when pushing the auxiliary moving spring 91.

[0100] It should be understood that, in order to ensure that the push rod 4 can move smoothly along its own axis, the positioning matching portion 411 and the positioning portion 2171 are not completely in contact, and most of the area between the two still has a certain gap, and only through the local contact between the two to ensure the gap setting between the circumferential side wall of the protrusion 41 and the groove wall of the accommodating groove 217. Due to the certain gap between the two, a certain elastic buffer space can be provided, thereby absorbing vibration and impact force, which helps to reduce the vibration impact on the relay during transportation or use, and improve its stability and reliability.

[0101] In some embodiments, see Fig.15 and Fig.16 As shown, the positioning portion 2171 is a protrusion, and the positioning matching portion 411 is a groove. The protrusion is limited in the groove, which can not only limit the rotation of the push rod 4 around its own axis, but also limit the shaking of the push rod 4, ensuring the clearance between the circumferential side wall of the protrusion 41 and the groove wall of the receiving groove 217. 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 41 and the groove wall of the receiving groove 217 will still not contact each other, thereby reducing the friction between the circumferential side wall of the protrusion 41 and the groove wall of the receiving groove 217, making it difficult to generate debris during the movement of the push rod 4. At the same time, the resistance during the movement of the push rod 4 is reduced, ensuring the smoothness and stability of the push rod 4 when pushing the auxiliary moving spring 91.

[0102] For example, the positioning portion 2171 is an arc-shaped protrusion, and the positioning matching portion 411 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 2171 and the positioning matching portion 411, and prevent relative rotation, thereby improving assembly stability, reliability and service life.

[0103] In other embodiments, the positioning portion 2171 may also be a groove, and correspondingly, the positioning matching portion 411 is a protrusion.

[0104] In one embodiment, the number of the positioning parts 2171 and the positioning matching parts 411 are both two, and the two positioning parts 2171 are arranged opposite to each other along the radial direction of the through hole, and the two positioning matching parts 411 are arranged opposite to each other along the radial direction of the push rod 4. In this way, a more precise positioning effect can be achieved, ensuring that the positioning parts 2171 and the positioning matching parts 411 are accurately aligned in the radial direction, minimizing relative movement or deviation as much as possible, thereby ensuring the stability of the movement process of the push rod 4.

[0105] In one embodiment, see Fig.17 As shown, the circumferential side wall of the protrusion 41 includes a first side wall 412 and a second side wall 413, and the first side wall 412 and the second side wall 413 are respectively located on both sides of the positioning matching portion 411, and the projection shapes of the first side wall 412 and the second side wall 413 in the set plane are different, wherein the set plane is perpendicular to the axis of the push rod 4.

[0106] For example, see Fig.17 As shown, the two positioning matching parts 411 are arc-shaped grooves, and the two arc-shaped grooves have a first end and a second end. The first side wall 412 is located between the first ends of the two arc-shaped grooves, and the second side wall 413 is located between the second ends of the two arc-shaped grooves. The projection shapes of the first side wall 412 and the second side wall 413 in the set plane are different, wherein the set plane is perpendicular to the axis of the push rod 4, so that the push rod 4 can be prevented from being installed incorrectly and the assembly efficiency is improved.

[0107] In some embodiments, see Fig.17 As shown, the circumferential side wall of the protrusion 41 further includes a transition side wall 414 , and the transition side wall 414 is located between the first side wall 412 and the first end of the arc-shaped groove.

[0108] In one embodiment, see Fig.17 As shown, the projection of the first side wall 412 in the set plane is a straight line segment, and the projection of the second side wall 413 in the set plane is a curved line segment. Exemplarily, the curved line segment is an arc segment.

[0109] Accordingly, see Fig.15 and Fig.18 As shown, the groove wall of the accommodating groove 217 has a straight groove wall adapted to the first side wall 412 and an arc-shaped groove wall adapted to the second side wall 413 .

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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. A relay, characterized in that: It includes an insulating cover and a frame, wherein the insulating cover is provided with two static contacts, the frame is installed inside the insulating cover and located between the two static contacts, an auxiliary contact assembly is provided on the frame, and a seal is provided between the frame and the top of the insulating cover to isolate the auxiliary contact assembly from the static contacts.

2. The relay according to claim 1, characterized in that: The frame is provided with a sealing member which is in close contact with a lower surface of the top of the insulating cover.

3. The relay according to claim 2, characterized in that: The frame is provided with a mounting plate, a side of the mounting plate close to the insulating cover is provided with a frame, and the sealing member is provided on the outer periphery of the frame.

4. The relay according to claim 3, characterized in that: A limiting convex strip is arranged on a side of the mounting plate close to the insulating cover, and the limiting convex strip is located on a side of the sealing member away from the frame.

5. The relay according to claim 3, characterized in that: The mounting plate has two opposite length sides and two opposite width sides, and both of the two length sides are provided with a first avoidance notch for avoiding the static contact.

6. The relay according to claim 3, characterized in that: The side wall of the insulating cover is provided with an inner concave portion, and the inner concave portion is provided with a magnetic steel; the mounting plate is provided with a second avoidance notch matched with the inner concave portion.

7. The relay according to claim 6, characterized in that: It also includes a shell and a yoke clamp, wherein the yoke clamp and the insulating cover are both installed inside the shell, and the yoke clamp is used to fix the magnetic steel to the inner recess.

8. The relay according to claim 7, characterized in that: The housing includes a first shell and a second shell, the first shell is a cylindrical structure, and the second shell is connected to the first shell; the inner surface of the second shell is provided with a positioning groove, and the yoke iron clamp is provided with a positioning protrusion, and the positioning protrusion is limited to the positioning groove.

9. The relay according to any one of claims 1 to 8, characterized in that: The auxiliary contact assembly includes an auxiliary moving spring and an auxiliary static spring. The auxiliary moving spring is installed at one end of the frame in the length direction, and the auxiliary static spring is installed at the other end of the frame in the length direction. The moving contact of the auxiliary moving spring can contact or separate with the static contact of the auxiliary static spring.

10. The relay according to claim 9, characterized in that: The auxiliary movable spring has a first end and a second end opposite to each other, the first end of the auxiliary movable spring is used to contact the static contact of the auxiliary static spring, and the second end of the auxiliary movable spring is installed with a first auxiliary lead-out terminal; the portion between the first end and the second end of the auxiliary movable spring is connected to the frame through a rivet, and the distance between the rivet and the first end is greater than the distance between the rivet and the second end; The relay further comprises a stop gasket, which is fixed to the side of the auxiliary moving spring away from the frame through the rivet, and the stop gasket can be elastically deformed to apply pressure to a set position of the auxiliary moving spring, wherein the set position is located between the rivet and the first end.

11. The relay according to claim 10, characterized in that: The stop gasket includes a first plate portion and a second plate portion, the first plate portion is connected to the second plate portion, the length of the first plate portion is greater than the length of the second plate portion, the first plate portion is provided with a through hole for the rivet to pass through, and the first plate portion can undergo elastic deformation so that the end face of the free end of the second plate portion is in surface contact with the auxiliary dynamic spring.

12. The relay according to claim 11, characterized in that: The auxiliary movable spring comprises a first spring, a second spring and a third spring connected in sequence, the free end of the first spring is the first end of the auxiliary movable spring, the second spring is arranged at an obtuse angle to the first spring and the third spring, the end of the third spring away from the second spring is provided with a clamping portion, and the first auxiliary lead-out end is clamped and fixed to the clamping portion; An end surface of the free end of the second plate portion abuts against a position of the third reed close to the second reed.

13. The relay according to claim 10, characterized in that: The frame is provided with a mounting groove, a first rivet hole is provided at the bottom of the mounting groove, the auxiliary movable spring is provided with a second rivet hole, and the auxiliary movable spring is installed in the mounting groove through the rivet; the auxiliary movable spring is provided with a positioning structure, and a positioning matching structure is provided on 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.

14. The relay according to claim 9, 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 arranged at intervals along the width direction of the frame; the contact of the auxiliary normally open reed and the contact of the auxiliary normally closed reed are respectively located on both sides of the auxiliary movable reed; a first movable contact is arranged on a side of the auxiliary movable reed close to the auxiliary normally open reed, and a second movable contact is arranged on a side of the auxiliary movable reed close to the auxiliary normally closed reed; The auxiliary moving reed is configured to switch between a first station and a second station, wherein, in the first station, the first moving contact is separated from the static contact of the auxiliary normally open reed, and the second moving contact is in contact with the static contact of the auxiliary normally closed reed, and in the second station, the first moving contact is in contact with the static contact of the auxiliary normally open reed, and the second moving contact is separated from the static contact of the auxiliary normally closed reed.

15. The relay according to claim 14, characterized in that: It also includes a push rod; 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 so that the auxiliary moving spring is switched between the first position and the second position; The circumferential surface of the push rod is provided with a protrusion, which is located on the bottom of the accommodating groove. The protrusion is provided with a positioning matching portion, which cooperates with the positioning portion to set a gap between the circumferential side wall of the protrusion and the groove wall of the accommodating groove.

16. The relay according to claim 15, characterized in that One of the positioning portion and the positioning matching portion is a protrusion, and the other is a groove.

17. The relay according to claim 16, characterized in that: The positioning portion is an arc-shaped protrusion, and the positioning matching portion is an arc-shaped groove.

18. The relay according to claim 15, 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.

19. The relay according to claim 18, 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 positioning matching portion, 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.

20. The relay according to claim 19, 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.

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