Protective relay

Abstract

The utility model discloses a protective relay, which comprises a relay body and a coil mounting assembly, the relay body comprises a shell and a mounting seat, one end of the shell is provided with an opening, and the mounting seat is detachably mounted at the opening of the shell; the coil mounting assembly comprises a coil body and a coil seat, the coil body is mounted on the coil seat, a pair of connecting blocks is fixedly connected to the mounting seat, sliding grooves are formed in the connecting blocks, sliding blocks are slidably connected to the interiors of the sliding grooves, and the upper ends of the sliding blocks are fixedly connected to the bottom of the coil seat. According to the utility model, the coil mounting assembly is arranged, so that the coil is mounted on the mounting seat through the coil seat in a sliding connection manner, the coil in the relay is convenient to disassemble and assemble, the coil is convenient to replace when being burnt out, and meanwhile, the coil is convenient to replace, so that the relay can be repeatedly used after the coil is replaced; and resource waste is reduced while the use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of relays, and in particular relates to a protection relay. Background Art

[0002] The main function of the protection relay is to detect faults in the power system and cut off the circuit when a fault is detected to prevent equipment damage or accidents. The mechanically adjustable pull-in voltage protection relay is a type of protection relay and has a wide range of use value.

[0003] When the protective relay is protecting the equipment, the coil is easily burned out in the case of overvoltage or overcurrent. After the coil is burned out, it is usually necessary to replace the entire relay because the coil is not convenient to replace, making the relay unable to be reused, increasing the cost of use and causing waste of resources.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a protection relay, which can solve the problem that the coil in the protection relay is inconvenient to replace, so the whole relay needs to be replaced after the coil is burned out.

[0006] In order to achieve the above purpose, the technical solution provided by a specific embodiment of the utility model is as follows:

[0007] A protection relay, comprising:

[0008] The relay body includes a shell and a mounting seat. One end of the shell is set to be an opening. The mounting seat is detachably mounted at the opening of the shell. The mounting seat is used to install electrical components in the relay. The electrical components installed on the mounting seat are protected by the shell.

[0009] The coil installation assembly includes a coil body and a coil seat, wherein the coil body is installed on the coil seat, and the coil seat is used to install the coil body to ensure that the coil body is stable after installation. A pair of connecting blocks are fixedly connected to the mounting seat, and a slide groove is provided in each of the connecting blocks. A slider is slidably connected in the slide groove, so that the slider can slide in the connecting block through the slide groove. The upper end of the slider is fixedly connected to the bottom of the coil seat, so that when the slider slides in the connecting block, the coil seat can be driven to move, so that the coil seat is installed on the mounting seat by sliding, and then the coil body is installed on the mounting seat by sliding under the drive of the coil seat. A limiting assembly is installed at the front end of the slide groove, and the limiting assembly is used to limit the sliding of the slider in the slide groove. Since the coil body needs to be installed on the mounting seat to ensure stability, when the slider is installed in the connecting block by sliding, a limiting assembly needs to be set to limit the sliding of the slider, so as to ensure the stability of the slider, so that the coil body can be stable after installation. At the same time, since the coil body is installed by sliding, it can be convenient to disassemble and replace the coil body when it is burned.

[0010] In one or more embodiments of the present invention, the housing is provided with a plurality of connection pins, and the plurality of connection pins are connected to electrical components inside the relay.

[0011] In one or more embodiments of the present invention, a base and a mounting plate are integrally formed on the mounting seat, a conducting sheet is mounted on the base, and a contact spring sheet is disposed on one side wall of the conducting sheet.

[0012] In one or more embodiments of the present invention, a pair of conductive columns are installed on the front and rear end wall plates of the base, the two ends of the contact spring are respectively installed on the pair of conductive columns, and a cover plate is detachably installed on the mounting plate.

[0013] In one or more embodiments of the utility model, the rear end of the connection block is set as a closed end, and the front end of the connection block is set as an open end, through which the slider can be slidably connected to the connection block through the slide groove, and the closed end is used to limit the movement of the slider after installation. The limit assembly is installed at the open end of the connection block, so that the slider is stable when it is slidably connected to the connection block under the restriction of the closed end and the open end limit assembly.

[0014] In one or more embodiments of the present invention, a limiting groove is provided on a side wall of the open end of the connecting block, and the limiting assembly is arranged in the limiting groove.

[0015] In one or more embodiments of the utility model, the limit assembly includes a limit plate, one end of which is movably sleeved in the limit slot so that the limit plate can be pulled out when installed in the limit slot, and the other end is placed at the front end of the slider to limit the sliding of the slider. A side wall of the open end of the connecting block is provided with an installation slot at the position where the limit slot is provided.

[0016] In one or more embodiments of the utility model, a connecting shaft is movably sleeved in the installation groove, so that the connecting shaft can be pulled out of the installation groove. One end of the connecting shaft is hingedly mounted on the limit plate, so that the limit plate can rotate on the connecting shaft. One end of the connecting shaft hinged on the limit plate is fixedly connected to the limit block, so that when the limit plate is pulled out of the limit groove, the connecting shaft can be driven to move.

[0017] In one or more embodiments of the present invention, a compression spring is installed in the installation groove, and the compression spring is sleeved on the connecting shaft, so that when the connecting shaft moves in the installation groove, the compression spring is compressed, so that the compression spring has a pulling force on the connecting shaft.

[0018] In one or more embodiments of the present invention, one end of the compression spring close to the limit plate is fixedly connected to the inner wall of the mounting groove, and one end of the compression spring away from the limit plate is fixedly connected to the side wall of the end of the connecting shaft away from the limit block, so that when the connecting shaft is pulled out of the mounting groove, the compression spring can be compressed, so that the compression spring has a pulling force on the connecting shaft.

[0019] Compared with the prior art, the utility model is provided with a coil mounting assembly, so that the coil is mounted on the mounting seat by means of a coil seat in a sliding connection, thereby facilitating the disassembly and assembly of the coil in the relay, and further facilitating the replacement of the coil when it burns out. At the same time, the easy replacement of the coil allows the relay to be reused after the coil is replaced, thereby reducing the use cost and the waste of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a three-dimensional diagram of a protection relay in one embodiment of the utility model;

[0022] Figure 2The internal diagram of a protection relay in one embodiment of the utility model is shown in FIG. Figure 1 ;

[0023] Figure 3 The internal diagram of a protection relay in one embodiment of the utility model is shown in FIG. Figure 2 ;

[0024] Figure 4 The internal diagram of a protection relay in one embodiment of the utility model is shown in FIG. Figure 3 ;

[0025] Figure 5 It is a cross-sectional view of a protection relay in one embodiment of the utility model;

[0026] Figure 6 In one embodiment of the utility model Figure 2 The enlarged view of point A in the middle;

[0027] Figure 7 The figure is a schematic diagram of the installation of the limit assembly in one embodiment of the utility model.

[0028] Description of main reference numerals:

[0029] 1-relay body, 11-housing, 12-connecting pin, 13-mounting seat, 14-base, 15-mounting plate, 16-conducting piece, 17-contact spring, 18-conductive column, 19-cover, 2-coil mounting assembly, 21-coil body, 22-mounting seat, 23-connecting block, 24-slide, 25-slider, 26-limiting groove, 27-limiting assembly, 2701-limiting plate, 2702-connecting shaft, 2703-mounting groove, 2704-compression spring, 2705-limiting block. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] like Figure 1~Figure 5 As shown, a protection relay in an embodiment of the utility model includes a relay body 1 and a coil mounting assembly 2.

[0032] like Figure 1 and Figure 5As shown, the relay body 1 includes a shell 11 and a mounting seat 13. One end of the shell 11 is set to be open. The mounting seat 13 is installed at the opening of the shell 11 in a detachable manner. The mounting seat 13 is used for installing electrical components in the relay. The electrical components installed on the mounting seat 13 are protected by the shell 11.

[0033] like Figure 1 and Figure 5 As shown, the housing 11 is provided with a plurality of connection pins 12, and the plurality of connection pins 12 are connected to the electrical components inside the relay.

[0034] like Figure 2~Figure 4 As shown, a base 14 and a mounting plate 15 are integrally formed on the mounting seat 13 , a conducting piece 16 is mounted on the base 14 , and a contact spring piece 17 is disposed on one side wall of the conducting piece 16 .

[0035] like Figure 2~Figure 4 As shown, a pair of conductive posts 18 are installed on the front and rear end wall plates of the base 14, the two ends of the contact spring 17 are respectively installed on the pair of conductive posts 18, and a cover plate 19 is detachably installed on the mounting plate 15.

[0036] like Figure 2~Figure 5 As shown, the coil mounting assembly 2 includes a coil body 21 and a coil seat 22, wherein the coil body 21 is mounted on the coil seat 22, and the coil seat 22 is used to mount the coil body 21 to ensure that the coil body 21 is stable after installation. A pair of connecting blocks 23 are fixedly connected to the mounting seat 13, and a slide groove 24 is provided in each of the pair of connecting blocks 23, and a slider 25 is slidably connected in the slide groove 24, so that the slider 25 can slide in the connecting block 23 through the slide groove 24. The upper end of the slider 25 is fixedly connected to the bottom of the coil seat 22, so that when the slider 25 slides in the connecting block 23, it can drive the coil seat 22 to move, so that the coil seat 22 is mounted on the mounting seat 13 by sliding, and then the coil body 21 is mounted on the mounting seat 13 by sliding under the drive of the coil seat 22. A limit assembly 27 is installed at the front end of the slide groove 24. The limit assembly 27 is used to limit the sliding of the slider 25 in the slide groove 24. Since the coil body 21 needs to be stable when installed on the mounting seat 13, when the slider 25 is installed in the connecting block 23 by sliding, the limit assembly 27 needs to be set to limit the sliding of the slider 25, so as to ensure the stability of the slider 25, so that the coil body 21 can be stable after installation. At the same time, since the coil body 21 is installed by sliding, it can be convenient to disassemble and replace the coil body 21 when it is burned.

[0037] Optionally, the coil body 21 and the coil seat 22 can be arranged in an integrated manner, or can be arranged to facilitate disassembly and assembly between the coil body 21 and the coil seat 22, so that when the coil body 21 is damaged, the coil body 21 can be removed through the coil seat 22, and the coil body 21 and the coil seat 22 can be replaced as a whole, or the coil body 21 can be disassembled and replaced.

[0038] like Figure 6 As shown, the rear end of the connection block 23 is set as a closed end, and the front end of the connection block 23 is set as an open end. The open end allows the slider 25 to be slidably connected to the connection block 23 through the slide groove 24, and the closed end is used to limit the movement of the slider 25 after installation. The limit assembly 27 is installed at the open end of the connection block 23, so that the slider 25 is stable when it is slidably connected to the connection block 23 under the restriction of the closed end and the open end limit assembly 27.

[0039] like Figure 6 As shown, a limiting groove 26 is provided on one side wall of the open end of the connecting block 23 , and a limiting assembly 27 is disposed in the limiting groove 26 .

[0040] like Figure 6 and Figure 7 As shown, the limiting assembly 27 includes a limiting plate 2701, one end of which is movably sleeved in the limiting groove 26, so that the limiting plate 2701 can be pulled out when installed in the limiting groove 26, and the other end of 2601 is placed at the front end of the slider 25, so as to limit the sliding of the slider 25. A side wall of the open end of the connecting block 23 is provided with an installation groove 2703 at the position where the limiting groove 26 is set.

[0041] like Figure 7 As shown, a connecting shaft 2702 is movably sleeved in the installation slot 2703, so that the connecting shaft 2702 can be pulled out from the installation slot 2703. One end of the connecting shaft 2702 is hingedly mounted on the limiting plate 2701, so that the limiting plate 2701 can rotate on the connecting shaft 2702. One end of the connecting shaft 2702 hinged on the limiting plate 2701 is fixedly connected to the limiting block 2705, so that when the limiting plate 2701 is pulled out from the limiting slot 26, the connecting shaft 2702 can be driven to move.

[0042] like Figure 7 As shown, a compression spring 2704 is installed in the installation groove 2703, and the compression spring 2704 is sleeved on the connecting shaft 2702, so that when the connecting shaft 2702 moves in the installation groove 2703, the compression spring 2704 will be compressed, so that the compression spring 2704 has a pulling force on the connecting shaft 2702.

[0043] like Figure 7As shown, one end of the compression spring 2704 close to the limit plate 2701 is fixedly connected to the inner wall of the mounting groove 2703, and the end of the compression spring 2704 away from the limit plate 2701 is fixedly connected to the side wall of the end of the connecting shaft 2702 away from the limit block 2705, so that when the connecting shaft 2702 is pulled out of the mounting groove 2703, the compression spring 2704 can be compressed, so that the compression spring 2704 has a pulling force on the connecting shaft 2702.

[0044] Preferably, the limit assembly 27 is used to ensure that the slider 25 is stable when it is slidably connected to the connecting block 23, so as to ensure the stability of the coil body 21 when it is installed on the mounting seat 13. In order to facilitate the disassembly and assembly of the coil body 21, the limit assembly 27 needs to be easy to disassemble and assemble. After installation, since the limit plate 2701 is clamped in the limit groove 26, one end of the limit plate 2701 is located at the front side of the slider 25, the movement of the slider 25 can be limited by the limit plate 2701, and at the same time, the compression spring 2704 has a pulling force on the connecting shaft 2702, so that the limit plate 2701 can be stably clamped in the limit groove 26 by pulling the connecting shaft 2702, thereby making the coil body 21 stable after installation; when the coil body 21 needs to be removed, by pulling the limit plate 2701, the limit plate 2701 will drive the connecting shaft 2702 to move, and when the limit plate 2701 slides out of the limit groove 26, the limit plate 2701 can be rotated so that the limit plate 2701 is not on the front side of the slider 25, so as to slide the slider 25 out of the connecting block 23.

[0045] It should be noted that the technical problem solved by the present application is the problem of the inconvenience of disassembly and assembly of the coil, and does not involve changes to the electrical circuits between the electrical components inside the relay. Because the wiring methods of the electrical components involved in the document are all existing technologies, the wiring methods between the electrical components are not shown in the description.

[0046] During use, when the coil body 21 in the relay is burned out, the shell 11 is removed from the mounting seat 13, and then the connecting wires at the wiring terminals of the coil body 21 are removed to ensure that all wiring between the coil body 21 and the electrical components in the relay is disconnected, and then the coil body 21 can be disassembled; during disassembly, the limiting plate 2701 is pulled out of the limiting groove 26 by pulling the limiting plate 2701, and then the limiting plate 2701 is rotated to separate the limiting plate 2701 and the front end of the slider 25, so that the slider 25 can be slid out of the connecting block 23 , so that the coil seat 22 can drive the coil body 21 to be removed from the mounting seat 13, and then the coil body 21 can be replaced. After the coil body 21 is replaced, the coil seat 22 is driven by the slider 25 to slide into the connecting block 23, and then the limit plate 2701 is pulled. By rotating, the limit plate 2701 is placed on the front side of the slider 25 and is sleeved in the limit groove 26. Under the pullback of the compression spring 2704, the limit plate 2701 can be pulled by the connecting shaft 2702 to be clamped in the limit groove 26, so that the coil body 21 is stable after installation.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A protection relay, It is characterized in that include: The relay body comprises a housing and a mounting seat, one end of the housing is set to be an opening, and the mounting seat is detachably mounted at the opening of the housing; The coil mounting assembly includes a coil body and a coil seat, wherein the coil body is mounted on the coil seat, a pair of connecting blocks are fixedly connected to the mounting seat, a slide groove is provided in each of the connecting blocks, a slider is slidably connected in the slide groove, the upper end of the slider is fixedly connected to the bottom of the coil seat, a limiting assembly is installed at the front end of the slide groove, and the limiting assembly is used to limit the sliding of the slider in the slide groove.

2. A protection relay according to claim 1, It is characterized in that The housing is provided with a plurality of connection pins, and the plurality of connection pins are connected with the electrical components inside the relay.

3. A protection relay according to claim 1, It is characterized in that A base and a mounting plate are integrally formed on the mounting seat, a conducting sheet is mounted on the base, and a contact spring sheet is arranged on one side wall of the conducting sheet.

4. A protection relay according to claim 3, It is characterized in that A pair of conductive posts are installed on the front and rear end wall plates of the base, the two ends of the contact spring are respectively installed on the pair of conductive posts, and a cover plate is detachably installed on the installation plate.

5. A protection relay according to claim 1, It is characterized in that The rear end of the connection block is set as a closed end, the front end of the connection block is set as an open end, and the limiting component is installed on the open end of the connection block.

6. A protection relay according to claim 1, It is characterized in that A limiting groove is provided on one side wall of the opening end of the connecting block, and the limiting assembly is arranged in the limiting groove.

7. A protection relay according to claim 6, It is characterized in that The limiting assembly comprises a limiting plate, one end of which is movably sleeved in the limiting groove, and a side wall of the open end of the connecting block is provided with a mounting groove at the position where the limiting groove is set.

8. A protection relay according to claim 7, It is characterized in that A connecting shaft is movably sleeved in the installation groove, one end of the connecting shaft is hingedly installed on the limit plate, and one end of the connecting shaft hinged on the limit plate is fixedly connected to the limit block.

9. A protection relay according to claim 8, It is characterized in that A compression spring is installed in the installation groove, and the compression spring is sleeved on the connecting shaft.

10. A protection relay according to claim 9, It is characterized in that One end of the compression spring close to the limiting plate is fixedly connected to the inner side wall of the mounting groove, and one end of the compression spring away from the limiting plate is fixedly connected to the side wall of one end of the connecting shaft away from the limiting block.

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