Relay for preventing false contact of auxiliary contact
By introducing a limit structure and push rod coordination into the electromagnetic relay, the problem of miscontact of auxiliary contacts is solved, ensuring the stability and reliability of the relay, and avoiding misjudgment of signals.
Patent Information
- Application Number
- CN202422169648.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-04
AI Technical Summary
In miniaturized electromagnetic relays, auxiliary contact components are prone to miscontact due to space limitations and mechanical life requirements, resulting in miscalculation of signals.
The limiting structure is used to limit the swing of the auxiliary moving reed, including the limiting recess of the armature part and the limiting convex part of the auxiliary moving reed, and cooperate with the push rod structure to prevent the misconception of the auxiliary moving contact and the auxiliary static contact.
Ensure the stability and reliability of the auxiliary contact assembly, avoid signal misjudgment, and improve the working reliability of the relay.
Smart Images
Figure CN223079040U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of relays, in particular to a relay for preventing miscontact of auxiliary contacts. Background Art
[0002] An electromagnetic relay is an electronic control device. It is usually applied to an automatic control circuit. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit.
[0003] In an electromagnetic relay, in order to monitor the working state of the main contacts and provide intuitive signal feedback to the operator or the control system, the relay usually adds a set of auxiliary contact components. The auxiliary contact components usually include a mutually cooperating auxiliary moving reed and an auxiliary static reed. An auxiliary moving contact is arranged on the auxiliary moving reed, and an auxiliary static contact is arranged on the auxiliary static reed. In miniaturized relay products, since the products themselves are miniaturized and micro-miniaturized products, the space occupied by their auxiliary contact components is relatively small. In order to meet the mechanical life requirements, the flexibility of the auxiliary moving reed is usually made large. Therefore, the auxiliary moving reed is prone to swing when subjected to external force impact, resulting in miscontact between the auxiliary moving contact and the auxiliary static contact, thereby causing signal misjudgment and affecting the effective operation of the electrical system. Summary of the Utility Model
[0004] The utility model aims at the technical problems existing in the prior art and provides a relay for preventing miscontact of auxiliary contacts.
[0005] The technical solution adopted by the utility model to solve its technical problems is as follows: A relay for preventing miscontact of auxiliary contacts includes an armature part, an auxiliary moving reed part, and an auxiliary static reed part. The auxiliary moving reed part includes an auxiliary moving reed and an auxiliary moving contact arranged on the auxiliary moving reed. The auxiliary static reed part includes an auxiliary static reed and an auxiliary static contact arranged on the auxiliary static reed. The armature part is rotatably arranged, and the auxiliary moving reed is driven by the armature part to close the auxiliary moving contact and the auxiliary static contact; a limiting structure is provided in cooperation between the armature part and the auxiliary moving reed, and the limiting structure restricts the auxiliary moving reed from swinging towards the side of the auxiliary static reed when not driven by the armature part.
[0006] Further, the limiting structure includes a limiting concave part arranged on the armature part and a limiting convex part arranged on the auxiliary moving reed. The limiting convex part extends into the limiting concave part and is blocked by the side wall of the limiting concave part.
[0007] Further, the limiting concave part is formed by a counterbore arranged at the edge position of the armature part. The limiting convex part is integrally formed with the auxiliary moving reed and is located on the side of the auxiliary moving reed facing the armature part in the width direction.
[0008] Further, a driving structure is provided on the armature part, so that the armature part pushes the auxiliary moving reed to swing towards one side of the auxiliary static reed through the driving structure.
[0009] Further, the driving structure includes a push rod, which is fitted on the side of the auxiliary moving reed facing away from the auxiliary static reed for pushing the auxiliary moving reed to swing towards one side of the auxiliary static reed.
[0010] Further, a mating convex part is provided on the side of the auxiliary moving reed facing the push rod. The mating convex part is used for contact and cooperation with the push rod, and the part where the mating convex part contacts the push rod has a smooth surface.
[0011] Further, the armature part includes an insulating driving body and an armature assembly arranged on the driving body. The armature assembly is in an I shape and is composed of two parallel armatures and a permanent magnet clamped between the two armatures. The four ends of the armature assembly respectively extend out of the driving body. The driving body is rotatably arranged, and the driving structure is provided on the driving body, and a limiting structure is provided in cooperation with the auxiliary moving reed.
[0012] Further, a base is further included. The armature part is rotatably connected to the base. The auxiliary moving reed part further includes an auxiliary moving reed lead-out piece connected to the auxiliary moving reed. The auxiliary moving reed lead-out piece and the auxiliary static reed are respectively inserted into the base.
[0013] Further, the base includes a bottom plate and two surrounding walls protruding upward from the edge of the bottom plate. The two surrounding walls are arranged opposite to each other. The armature part is rotatably connected between the two surrounding walls by a rotating shaft. The auxiliary moving reed lead-out piece and the auxiliary static reed are respectively inserted laterally into two side slots provided correspondingly on the bottom plate. An accommodating groove penetrating through the inside and outside is provided on one of the surrounding walls corresponding to the auxiliary moving reed part and the auxiliary static reed part.
[0014] Further, a push card is further included, as well as a moving reed part and a static reed part inserted into the base and cooperating with each other. The armature part is connected to the moving reed part through the push card.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. Since the armature part of the present utility model is provided with a limiting structure in cooperation with the auxiliary moving reed, the limiting structure restricts the auxiliary moving reed from swinging to one side of the auxiliary static reed without being driven by the armature part, thereby avoiding accidental swinging of the auxiliary moving reed when it is impacted by an external force, which may cause miscontact between the auxiliary moving contact and the auxiliary static contact. Furthermore, it can ensure the stability and reliability of the operation of the auxiliary contact assembly of the present utility model and avoid signal misjudgment.
[0017] 2. The limiting structure preferably includes a limiting recess provided on the armature part and a limiting protrusion provided on the auxiliary moving reed. The limiting protrusion extends into the limiting recess, making the limiting structure easier to process and form.
[0018] 3. The provision of the mating protrusion can prevent the push rod of the armature part from contacting the burrs on the edge of the auxiliary moving reed, thus avoiding easy friction and chipping, and preventing plastic chips from entering the auxiliary contact surface and causing the auxiliary contact to fail to conduct.
[0019] The following further elaborates on the present utility model in detail with reference to the drawings and embodiments; however, a relay for preventing miscontact of auxiliary contacts of the present utility model is not limited to the embodiments. Description of the Drawings
[0020] Figure 1 is a three-dimensional structure schematic diagram of the present utility model (excluding the housing);
[0021] Figure 2 is a three-dimensional structure schematic diagram of the armature part of the present utility model;
[0022] Figure 3 is an exploded view of the armature part of the present utility model;
[0023] Figure 4 is a three-dimensional structure schematic diagram of the auxiliary moving reed part of the present utility model;
[0024] Figure 5 is a side view of the auxiliary moving reed part of the present utility model;
[0025] Figure 6 is a structure schematic diagram of the base of the present utility model;
[0026] Figure 7 is a schematic diagram of the cooperation between the magnetic circuit part and the auxiliary contact assembly of the present utility model Figure 1 ;
[0027] Figure 8 is a schematic diagram of the cooperation between the magnetic circuit part and the auxiliary contact assembly of the present utility model Figure 2 ;
[0028] Figure 9Schematic diagram of the cooperation between the magnetic circuit part and the auxiliary contact assembly of the present utility model Figure 3 ;
[0029] Figure 10 Is a cross-sectional view of the present utility model;
[0030] In the figure, 1 is the moving spring part, 11 is the moving spring lead piece, 12 is the moving spring piece, 13 is the moving contact, 2 is the pushing card, 3 is the base, 31 is the bottom plate, 311 is the side slot, 32 is the surrounding wall, 322 is the accommodating groove, 4 is the armature part, 41 is the driving body, 411 is the limiting recess, 412 is the push rod, 413 / 321 is the shaft hole, 42 is the armature, 43 is the permanent magnet, 5 is the rotating shaft, 6 is the coil part, 61 is the coil holder, 62 is the enameled wire, 63 is the iron core, 64 is the yoke iron, 7 is the static spring part, 71 is the static spring piece, 72 is the static contact, 8 is the auxiliary moving spring part, 81 is the auxiliary moving spring piece, 811 is the limiting convex part, 812 is the mating convex part, 82 is the auxiliary moving contact, 83 is the auxiliary moving spring lead piece, 9 is the auxiliary static spring part, 91 is the auxiliary static spring piece, 92 is the auxiliary static contact, and 10 is the housing. Specific implementation manner
[0031] Please refer to Figures 1 - 10 As shown, a relay for preventing accidental contact of auxiliary contacts of the present utility model includes an armature part 4, an auxiliary moving spring part 8, and an auxiliary static spring part 9. The auxiliary moving spring part 8 includes an auxiliary moving spring piece 81 and an auxiliary moving contact 82 provided on the auxiliary moving spring piece 81. The auxiliary static spring part 9 includes an auxiliary static spring piece 91 and an auxiliary static contact 92 provided on the auxiliary static spring piece 91. The armature part 4 is rotatably arranged. The auxiliary moving spring piece 81 is driven by the armature part 4 to close its auxiliary moving contact 82 with the auxiliary static contact 92. The armature part 4 and the auxiliary moving spring piece 81 are provided with a limiting structure, which restricts the auxiliary moving spring piece 81 from swinging to one side of the auxiliary static spring piece 91 when not driven by the armature part 4, so as to avoid accidental swinging of the auxiliary moving spring piece 81 when it is impacted by an external force, resulting in accidental contact between the auxiliary moving contact 82 and the auxiliary static contact 92.
[0032] As a preferred structure, the limiting structure includes a limiting recess 411 provided on the armature part 4 and a limiting protrusion 811 provided on the auxiliary movable spring piece 81, the limiting protrusion 811 extends into the limiting recess 411 and is blocked by the side wall of the limiting recess 411. Specifically, the limiting recess 411 is formed by a sink groove provided at the edge of the armature part 4, the limiting protrusion 811 is integrally formed with the auxiliary movable spring piece 81, and is located on the side of the auxiliary movable spring piece 81 facing the armature part 4 in the width direction, and the limiting protrusion 811 is in the shape of a sheet. In this way, the limiting structure is easier to process and will not occupy the space between the auxiliary movable spring piece 81 and the auxiliary static spring piece 91. In other embodiments, the limiting structure includes a limiting protrusion provided on the armature part, and the limiting protrusion is matched with the side of the auxiliary movable spring piece facing the auxiliary static spring piece.
[0033] In this embodiment, the armature part 4 is provided with a driving structure, so that the armature part 4 can push the auxiliary movable spring piece 81 to swing toward one side of the auxiliary static spring piece 91 through the driving structure. Specifically, the driving structure includes a cylindrical push rod 412, which extends along the width direction of the auxiliary movable spring piece 81 and cooperates with the side of the auxiliary movable spring piece 81 facing away from the auxiliary static spring piece 91 to push the auxiliary movable spring piece 81 to swing toward the side of the auxiliary static spring piece 91, and at the same time, the push rod 412 can be used to limit the auxiliary movable spring piece 81 from swinging toward the side away from the auxiliary static spring piece 91. As a preferred structure, Figure 4 , Figure 5 As shown, the auxiliary movable spring 81 is provided with a mating protrusion 812 on the side facing the push rod 412, and the mating protrusion 812 is used to contact and mate with the push rod 412, and the part where the mating protrusion 812 contacts the push rod 412 has a smooth surface, so that the part where the mating protrusion 812 contacts the push rod 412 has no burrs, and will not scratch the push rod 412, thereby preventing the push rod 412 from being rubbed by the metal burrs and producing chips. The mating protrusion 812 is specifically formed by stamping the corresponding part of the auxiliary movable spring 81 from one side facing the auxiliary static spring 91 to the other side of the auxiliary movable spring 81, but is not limited thereto.
[0034] like Figure 3 As shown, the armature part 4 includes an insulated driving body 41 and an armature assembly disposed on the driving body 41. The armature assembly is in an I-shape and consists of two parallel armatures 42 and a permanent magnet 43 clamped between the two armatures 42. The four ends of the armature assembly extend out of the driving body 41. The driving body 41 is rotatably disposed, and the driving body 41 is provided with the driving structure, and the limiting structure is matched with the auxiliary moving spring 81, that is, the limiting recess 411 and the push rod 412 are provided on the driving body 41. Therefore, the relay of the utility model is a magnetic latching relay, but is not limited thereto.
[0035] The utility model further comprises a base 3, an armature part 4 is rotatably connected to the base 3, and the auxiliary dynamic spring part 8 further comprises an auxiliary dynamic spring lead-out piece 83 connected to the auxiliary dynamic spring piece 81. Specifically, an auxiliary dynamic contact 82 is arranged at the upper end of the auxiliary dynamic spring piece 81, and the lower end of the auxiliary dynamic spring piece 81 is connected to the auxiliary dynamic spring lead-out piece 83. The auxiliary dynamic spring lead-out piece 83 and the auxiliary static spring piece 91 are respectively inserted into the base 3 and are located on one side of the armature part 4 in the direction of its rotation axis.
[0036] In this embodiment, the base 3 includes a bottom plate 31 and two surrounding walls 32 protruding upward from the edge of the bottom plate 31. The two surrounding walls 32 are arranged opposite to each other, and the armature part 4 (specifically, the driving body 41 of the armature part 4) is rotatably connected between the two surrounding walls 32 by a rotating shaft 5. Therefore, the driving body 41 and the two surrounding walls of the base 3 are respectively provided with shaft holes 413 / 321 that cooperate with the rotating shaft 5. The auxiliary dynamic spring lead-out piece 83 and the auxiliary static spring piece 91 are respectively inserted laterally into the two side slots 311 correspondingly arranged on the bottom plate 31, and one of the surrounding walls of the base 3 is provided with an accommodation groove 322 that passes through inside and outside, corresponding to the auxiliary dynamic spring part 8 and the auxiliary static spring part 9, as shown in FIG. Figure 6 shown.
[0037] The utility model also includes a push card 2, and a movable spring part 1 and a static spring part 7 inserted in the base 3 and matched with each other, and the armature part 4 is connected to the movable spring part 1 through the push card 2. The movable spring part 1 specifically includes a movable spring lead-out piece 11, a movable contact 13 and a movable spring piece 12 capable of elastic deformation, the movable contact 13 is arranged on the movable spring piece 12, one end of the movable spring lead-out piece 11 is connected to one end of the movable spring piece 12, and the movable spring lead-out piece 11 is located on the side of the movable spring piece 12 in the thickness direction and away from the movable contact 13, so that the direction of the current flowing through the movable spring lead-out piece 11 is opposite to the direction of the current flowing through the movable spring piece 12. The static spring part 7 includes a static spring piece 71 and a static contact 72 arranged on the static spring piece 71, the static spring piece 71 and the movable spring lead-out piece 11 are respectively inserted in the base 33, and the static contact 72 matches the movable contact 13.
[0038] The utility model further includes a coil part 6, which includes a coil frame 61, an enameled wire 62 wound on the coil frame 61, two yokes 64 and an iron core 63. The iron core 63 is inserted into the coil frame 61. The two yokes 64 are L-shaped, and one side of the two yokes 64 is riveted and fixed to the two ends of the iron core 63. The free ends of the two yokes 64 are respectively matched with the recesses on both sides of the armature part 44, that is, the other side of one yoke 64 is matched between the upper ends of the two armatures 42, and the other side of the other yoke 64 is matched between the lower ends of the two armatures 42. The above-mentioned coil part 6 and the armature part 4 cooperate with each other to form the magnetic circuit part of the relay of the utility model.
[0039] The present utility model further includes a housing 10, the bottom end of the housing 10 is connected to a base 3, and the static spring part 7, the moving spring part 1, the pushing card 2, the armature part 4, the coil part 6, the auxiliary moving spring part 8, the auxiliary static spring part 9, etc. are accommodated in its housing cavity.
[0040] For a relay with anti-miscontact of auxiliary contacts of the present utility model, when it is impacted by an external force, the auxiliary moving spring piece 81 swings due to inertia. When the auxiliary moving spring piece 81 swings to the side away from the auxiliary static spring piece 91, it will be blocked by the push rod 412 on the armature part 4 and stop swinging. When the auxiliary moving spring piece 81 swings to the side of the auxiliary static spring piece 91, since the armature part 4 and the two yokes 64 are attracted and kept in a relatively static state, the limiting convex part 811 of the auxiliary moving spring piece 81 will be blocked by the side wall of the limiting concave part 411 on the driving body 41, as Figures 7 - 9 shown. Therefore, the auxiliary moving spring piece 81 will not swing more to the side of the auxiliary static spring piece 91, thus avoiding the miscontact between the auxiliary moving contact 82 and the auxiliary static contact 92, and further ensuring the stability and reliability of the operation of the auxiliary contact assembly (the auxiliary moving spring part 8 and the auxiliary static spring part 9 cooperate with each other to form the auxiliary contact assembly) of the present utility model, and avoiding the situation of signal misjudgment.
[0041] For a relay with anti-miscontact of auxiliary contacts of the present utility model, the parts not involved are the same as or can be implemented by the prior art.
[0042] The above embodiments are only used to further illustrate a relay with anti-miscontact of auxiliary contacts of the present utility model, but the present utility model is not limited to the embodiments. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the technical solution of the present utility model.
Claims
1. A relay for preventing miscontact of auxiliary contacts, comprising an armature part, an auxiliary moving spring part and an auxiliary static spring part. The auxiliary moving spring part includes an auxiliary moving spring piece and an auxiliary moving contact arranged on the auxiliary moving spring piece. The auxiliary static spring part includes an auxiliary static spring piece and an auxiliary static contact arranged on the auxiliary static spring piece. The armature part is rotatably arranged, and the auxiliary moving spring piece is driven by the armature part to close its auxiliary moving contact with the auxiliary static contact; characterized in that: The armature part and the auxiliary moving reed are cooperated with a limiting structure, and the limiting structure restricts the auxiliary moving reed from swinging towards one side of the auxiliary static reed without being driven by the armature part.
2. The relay for preventing miscontact of auxiliary contacts according to claim 1, wherein: The limiting structure includes a limiting recess provided on the armature part and a limiting protrusion provided on the auxiliary moving reed. The limiting protrusion extends into the limiting recess and is blocked by the side wall of the limiting recess.
3. The relay for preventing miscontact of auxiliary contacts according to claim 2, characterized in that: The limiting recess is formed by a sunk groove provided at the edge position of the armature part. The limiting protrusion is integrally formed with the auxiliary moving reed and is located on one side of the auxiliary moving reed facing the armature part in the width direction.
4. The relay for preventing miscontact of auxiliary contacts according to any one of claims 1-3, characterized in that: The armature part is provided with a driving structure so that the armature part can push the auxiliary moving reed to swing towards one side of the auxiliary static reed through the driving structure.
5. The relay for preventing miscontact of auxiliary contacts according to claim 4, characterized in that: The driving structure includes a push rod, and the push rod is cooperated with the side of the auxiliary moving reed facing away from the auxiliary static reed to be used for pushing the auxiliary moving reed to swing towards one side of the auxiliary static reed.
6. The relay for preventing miscontact of auxiliary contacts according to claim 5, characterized in that: The auxiliary moving reed is provided with a cooperating protrusion corresponding to the push rod. The cooperating protrusion is used for contact cooperation with the push rod, and the part of the cooperating protrusion in contact with the push rod has a smooth surface.
7. The relay for preventing miscontact of auxiliary contacts according to claim 4, characterized in that: The armature part includes an insulating driving body and an armature assembly provided on the driving body. The armature assembly is in an I shape and is composed of two parallel armatures and a permanent magnet clamped between the two armatures. The four ends of the armature assembly respectively extend out of the driving body. The driving body is rotatably arranged, and the driving body is provided with the driving structure and is cooperated with the auxiliary moving reed with the limiting structure.
8. The relay for preventing miscontact of auxiliary contacts according to claim 1, wherein: It further includes a base. The armature part is rotatably connected to the base. The auxiliary moving reed part further includes an auxiliary moving reed lead-out piece connected to the auxiliary moving reed. The auxiliary moving reed lead-out piece and the auxiliary static reed are respectively inserted into the base.
9. The relay for preventing miscontact of auxiliary contacts according to claim 8, characterized in that: The base includes a bottom plate and two surrounding walls protruding upward from the edge of the bottom plate. The two surrounding walls are arranged oppositely. The armature part is rotatably connected between the two surrounding walls by a rotating shaft. The auxiliary moving reed lead-out piece and the auxiliary static reed are respectively inserted laterally into two side slots correspondingly provided on the bottom plate. One of the surrounding walls is provided with a through accommodating groove corresponding to the auxiliary moving reed part and the auxiliary static reed part.
10. The relay for preventing miscontact of auxiliary contacts according to claim 8, characterized in that: It further includes a pushing card, and a moving reed part and a static reed part which are inserted into the base and cooperate with each other. The armature part is connected to the moving reed part through the pushing card.