Direct-current high-load electromagnetic relay

Abstract

The utility model provides a direct-current high-load electromagnetic relay, which comprises an insulating framework, a double reed and a magnet, the bottom of the insulating framework is provided with an accommodating groove, one end of the accommodating groove is provided with a movable lead-out pin, the other end of the accommodating groove is provided with a static lead-out pin, and the movable lead-out pin and the static lead-out pin both extend to the outside of the insulating framework; the double-reed is arranged in the accommodating groove, one end of the double-reed is connected with the movable lead-out pin, the other end of the double-reed corresponds to the static lead-out pin and is provided with a movable contact, and the static lead-out pin is provided with a static contact corresponding to the movable contact; a contact area is formed between the movable contact and the static contact, a magnet is arranged on the outer wall of the insulating framework at a position corresponding to the contact area, and the magnet is used for carrying out arc extinguishing on the contact area; the DC high-load electromagnetic relay provided by the utility model overcomes the defects of low load capacity and short service life of the existing electromagnetic relay.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic relays, in particular to a DC high-load electromagnetic relay. Background Art

[0002] An electromagnetic relay is a relay that uses electromagnetic force to drive the relative movement of mechanical parts to produce a predetermined response. It is generally composed of an iron core, a coil, an armature, a yoke, and moving and static springs with contacts. When current passes through the coil, an electromagnetic force is generated, and the armature is attracted, so that the moving contact of the moving spring contacts the static contact of the static spring; when the current in the coil disappears, the electromagnetic force disappears, and the armature resets, so that the moving contact of the moving spring separates from the static contact of the static spring. The purpose of conducting or cutting off the circuit is achieved through the attraction or separation of the moving contact and the static contact.

[0003] The moving reed is an important component of the electromagnetic relay. The structure of the moving reed determines the load capacity of the relay. The existing moving reeds all adopt a single-layer structure, which has a weak load capacity and low practicality. When the existing moving contact and the static contact come into contact, an arc spark will be generated, and the arc spark will burn the contact surface, and even cause the contact to fail in severe cases, which will not only affect the load capacity of the relay, but also affect the service life of the relay. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The problem to be solved by the utility model is to provide a DC high-load electromagnetic relay to overcome the defects of low load capacity and short service life of the existing electromagnetic relays.

[0006] (II) Technical solution

[0007] In order to solve the technical problem, the utility model provides a DC high-load electromagnetic relay, including an insulating frame, a double reed and a magnet, wherein a receiving groove is provided at the bottom of the insulating frame, a moving lead pin is installed at one end of the receiving groove, and a static lead pin is installed at the other end thereof, and the moving lead pin and the static lead pin are both extended to the outside of the insulating frame; the double reed is placed in the receiving groove, one end of the double reed is connected to the moving lead pin, and the other end of the double reed corresponds to the static lead pin and is provided with a moving contact, and a static contact corresponding to the moving contact is provided on the static lead pin; a contact area is formed between the moving contact and the static contact, and the magnet is installed on the outer wall of the insulating frame at a position corresponding to the contact area, and the magnet is used to extinguish the arc in the contact area.

[0008] In some embodiments, the double reed includes a first moving reed and a second moving reed of similar shape, wherein the second moving reed is stacked on the first moving reed; one end of the two moving reeds is fixedly connected through the moving contact, and the other end of the two moving reeds is connected to the moving lead pin.

[0009] In some embodiments, a mounting groove matching the outer contour of the magnet is formed inwardly on the outer wall of the insulating skeleton, and the magnet is embedded in the mounting groove, and the magnet is a permanent magnet.

[0010] In some embodiments, the movable lead pin is symmetrically provided with a first connecting column, and the first movable spring piece and the second movable spring piece are both provided with a first connecting hole adapted to the first connecting column. The first movable spring piece and the second movable spring piece each include a first connecting portion, an inclined portion, a driving portion, and a second connecting portion connected in sequence, the movable contact is mounted at the first connecting portion, the second connecting portion is connected to the movable lead pin, and the inclined angle of the inclined portion is 40 to 45 degrees.

[0011] In some embodiments, an electromagnetic assembly is installed at the upper end of the insulating frame, and the electromagnetic assembly includes an armature and a push card connected to the armature, and the push card is used to push the double spring to make the moving contact and the static contact contact; the push card is provided with a push block extending toward the double spring, and the push block is in contact with the driving part. The electromagnetic assembly also includes a coil frame arranged at the upper end of the insulating frame, and an iron core is inserted into the coil frame, and a yoke is installed at one end of the coil frame, and the armature corresponding to the iron core is installed at the other end thereof.

[0012] In some embodiments, the push card is symmetrically provided with a second connecting column, the end of the armature is sleeved in the push card, and the armature is provided with a second connecting hole matching the second connecting column; the push card is symmetrically provided with a pressure column for pressing the yoke. A compression spring is installed at the bottom of the yoke, and the compression spring is used to press the armature.

[0013] (III) Beneficial effects

[0014] The utility model provides a DC high-load electromagnetic relay, which has the following advantages compared with the prior art:

[0015] 1) The double-layer reed structure and the increased reed angle design enable it to achieve high load while also having a good contact gap, which can better meet customers' requirements for large load switching capacity, high contact gap and contact withstand voltage;

[0016] 2) By adding a magnet structure, the arc sparks generated when the moving and static contacts touch will be attracted by the magnet, thereby achieving the arc extinguishing effect. It can effectively reduce the damage caused by the arc sparks to electric shock, so that it can achieve a higher DC load switching capacity without changing the structural size, and can also extend the service life of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is a three-dimensional diagram of a DC high-load electromagnetic relay of the utility model;

[0019] Figure 2 This is an exploded diagram of a DC high-load electromagnetic relay of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a DC high-load electromagnetic relay of the utility model after removing the shell;

[0021] Figure 4 This is an exploded view of a DC high-load electromagnetic relay magnet of the utility model;

[0022] Figure 5 It is a three-dimensional diagram of a double reed of a DC high-load electromagnetic relay of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of an electromagnetic assembly of a DC high-load electromagnetic relay of the utility model;

[0024] Figure 7 It is a stereoscopic diagram of the electromagnetic assembly of a DC high-load electromagnetic relay of the utility model from another perspective;

[0025] Figure 8 This is a three-dimensional diagram of the connection between the armature and the push card of a DC high-load electromagnetic relay of the utility model;

[0026] Fig. 9 This is a three-dimensional diagram of the connection between a compression spring and a yoke iron of a DC high-load electromagnetic relay of the utility model;

[0027] The names of the components corresponding to the various figure marks in the figure are: 1. Insulating frame; 101. Receiving groove; 102. Contact area; 103. Mounting groove; 2. Double spring; 21. Moving contact; 22. First moving spring; 23. Second moving spring; 201. First connecting hole; 202. First connecting part; 203. Inclined part; 204. Driving part; 205. Second connecting part; 3. Magnet; 4. Moving lead-out pin; 401. First connecting column; 5. Static lead-out pin; 501. Static contact; 6. Electromagnetic assembly; 61. Armature; 62. Push card; 63. Coil frame; 64. Iron core; 65. Yoke; 66. Compression spring; 611. Second connecting hole; 621. Push block; 622. Second connecting column; 623. Compression column; 7. Shell. DETAILED DESCRIPTION

[0028] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0030] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0031] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0032] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0033] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0034] See also Figures 1 to 9 The utility model provides a DC high-load electromagnetic relay, comprising a housing 7, an insulating frame 1, a double reed 2 and a magnet 3, wherein the housing 7 is covered on the insulating frame 1. A receiving groove 101 is provided at the bottom of the insulating frame 1, and the receiving groove 101 is used to receive components such as the double reed 2, a moving lead pin 4 and a static lead pin 5. A moving lead pin 4 is installed at one end of the receiving groove 101, and a static lead pin 5 is installed at the other end of the receiving groove 101. Both the moving lead pin 4 and the static lead pin 5 extend to the outside of the insulating frame 1, and the extended parts of the moving lead pin 4 and the static lead pin 5 are widened, which is conducive to increasing the load. The double reed 2 is placed in the receiving groove 101, one end of the double reed 2 is connected to the moving lead pin 4, and the other end of the double reed 2 corresponds to the static lead pin 5 and is provided with a moving contact 21, and a static contact 501 corresponding to the moving contact 21 is provided on the static lead pin 5, and the moving contact 21 can be in contact and communication with the static contact 501. A contact area 102 is formed between the moving contact 21 and the stationary contact 501 . A magnet 3 is installed on the outer wall of the insulating frame 1 at a position corresponding to the contact area 102 . The magnet 3 is used to extinguish the arc in the contact area 102 .

[0035] In some embodiments, Figure 3 and Figure 5As shown, the double spring 2 includes a first moving spring 22 and a second moving spring 23 of similar shape, and the second moving spring 23 is stacked on the first moving spring 22. One end of the two moving springs is fixedly connected through the moving contact 21, and the other end of the two moving springs is connected to the moving lead pin 4. The first connecting column 401 is symmetrically arranged on the moving lead pin 4, and the first moving spring 22 and the second moving spring 23 are both provided with a first connecting hole 201 adapted to the first connecting column 401, which is convenient for connection. The first moving spring 22 and the second moving spring 23 each include a first connecting portion 202, an inclined portion 203, a driving portion 204 and a second connecting portion 205 connected in sequence, the moving contact 21 is installed at the first connecting portion 202, the second connecting portion 205 is connected to the moving lead pin 4, and the inclined angle of the inclined portion 203 is 40 degrees to 45 degrees. The double-layer reed structure and increased reed angle design enable it to achieve high load while also having a good contact gap, which can better meet customers' requirements for large load switching capacity, high contact gap and contact pressure resistance.

[0036] In some embodiments, Figure 3 and Figure 4 As shown, the outer wall of the insulating frame 1 is concavely formed with a mounting groove 103 matching the outer contour of the magnet 3, and the magnet 3 is embedded in the mounting groove 103. The magnet 3 can be fixed in the mounting groove 103 by gluing, and the magnet 3 can be rectangular and is a permanent magnet. By adding a magnet structure, the arc spark generated when the moving and static contacts are in contact will be attracted by the magnet, thereby achieving an arc extinguishing effect, which can effectively reduce the damage caused by the arc spark to the electric shock, is conducive to improving the load capacity of the relay, and can also extend the service life of the relay.

[0037] In one example, if Figure 6 and Figure 7 As shown, the upper end of the insulating frame 1 is equipped with an electromagnetic assembly 6, which includes an armature 61 and a push card 62 connected to the armature 61, and the push card 62 is used to push the double spring 2 to make the moving contact 21 and the static contact 501 contact. The push card 62 is extended toward the double spring 2 and is provided with a push block 621, and the push block 621 is in contact with the driving part 204. The electromagnetic assembly 6 also includes a coil frame 63 arranged at the upper end of the insulating frame 1, and a coil (not shown in the figure) is installed on the outer wall of the coil frame 63. An iron core 64 is inserted into the coil frame 63, and a yoke 65 is installed at one end of the coil frame 63, and an armature 61 corresponding to the iron core 64 is installed at the other end of the coil frame 63.

[0038] In one example, if Figure 6 , Figure 8 and Fig. 9As shown, the push card 62 is symmetrically provided with a second connecting column 622, the end of the armature 61 is sleeved in the push card 62, and the armature 61 is provided with a second connecting hole 611 matching the second connecting column 622; the push card 62 is symmetrically provided with a pressing column 623 for pressing the yoke 65. A compression spring 66 is installed at the bottom of the yoke 65, and the compression spring 66 is used to press the armature 61.

[0039] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0040] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A DC high-load electromagnetic relay, characterized in that: The invention comprises an insulating frame (1), a double spring (2) and a magnet (3); the bottom of the insulating frame (1) is provided with a receiving groove (101); one end of the receiving groove (101) is provided with a moving lead pin (4), and the other end thereof is provided with a static lead pin (5); the moving lead pin (4) and the static lead pin (5) both extend to the outside of the insulating frame (1); the double spring (2) is placed in the receiving groove (101), one end of the double spring (2) is connected to the moving lead pin (4), and the other end thereof is provided with a static lead pin (5); the moving lead pin (4) and the static lead pin (5) both extend to the outside of the insulating frame (1); The end of the insulating frame (1) corresponds to the static lead-out pin (5) and is provided with a moving contact (21); the static lead-out pin (5) is provided with a static contact (501) corresponding to the moving contact (21); a contact area (102) is formed between the moving contact (21) and the static contact (501); the magnet (3) is installed on the outer wall of the insulating frame (1) at a position corresponding to the contact area (102); the magnet (3) is used to extinguish the arc in the contact area (102).

2. The DC high-load electromagnetic relay according to claim 1, characterized in that: The double reed (2) comprises a first moving reed (22) and a second moving reed (23) of similar shape, wherein the second moving reed (23) is stacked on the first moving reed (22); one end of the two moving reeds is fixedly connected via the moving contact (21), and the other ends of the two moving reeds are connected to the moving lead pin (4).

3. The DC high-load electromagnetic relay according to claim 1, characterized in that: An installation groove (103) matching the outer contour of the magnet (3) is formed inwardly on the outer wall of the insulating frame (1), and the magnet (3) is embedded in the installation groove (103).

4. The DC high-load electromagnetic relay according to claim 1, characterized in that: The magnet (3) is a permanent magnet.

5. The DC high-load electromagnetic relay according to claim 2, characterized in that: The movable lead-out pin (4) is symmetrically provided with a first connecting column (401), and the first movable spring piece (22) and the second movable spring piece (23) are both provided with a first connecting hole (201) adapted to the first connecting column (401).

6. The DC high-load electromagnetic relay according to claim 2, characterized in that: The first movable spring piece (22) and the second movable spring piece (23) both comprise a first connecting portion (202), an inclined portion (203), a driving portion (204) and a second connecting portion (205) which are connected in sequence; the movable contact (21) is mounted on the first connecting portion (202); the second connecting portion (205) is connected to the movable lead-out pin (4); and the inclined angle of the inclined portion (203) is 40 to 45 degrees.

7. The DC high-load electromagnetic relay according to claim 6, characterized in that: An electromagnetic assembly (6) is installed at the upper end of the insulating frame (1), and the electromagnetic assembly (6) comprises an armature (61) and a push card (62) connected to the armature (61), and the push card (62) is used to push the double spring (2) so that the moving contact (21) and the static contact (501) are in contact; the push card (62) is provided with a push block (621) extending toward the double spring (2), and the push block (621) is in abutment contact with the driving part (204).

8. The DC high-load electromagnetic relay according to claim 7, characterized in that: The electromagnetic assembly (6) further comprises a coil frame (63) arranged at the upper end of the insulating frame (1), an iron core (64) being inserted into the coil frame (63), a yoke (65) being installed at one end of the coil frame (63), and an armature (61) corresponding to the iron core (64) being installed at the other end thereof.

9. The DC high-load electromagnetic relay according to claim 8, characterized in that: The push card (62) is symmetrically provided with a second connecting column (622), the end of the armature (61) is sleeved in the push card (62), and the armature (61) is provided with a second connecting hole (611) matching the second connecting column (622); the push card (62) is symmetrically provided with a pressing column (623) for pressing the yoke (65).

10. The DC high-load electromagnetic relay according to claim 8, characterized in that: A compression spring (66) is installed at the bottom of the yoke (65), and the compression spring (66) is used to press the armature (61).

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