Electromagnetic relay

Abstract

The utility model provides an electromagnetic relay, which comprises a bottom plate, a framework, an iron core, a yoke, an armature, a static contact piece, a movable contact piece, a coil pin, a shell and a baffle plate I. The baffle plate I isolates a coil from the yoke, so that the withstand voltage value of the relay can be effectively increased, and the working stability is improved; a support I and a support II are arranged at the two ends of the framework respectively, two pin grooves which are symmetrically distributed relative to the coil columns are formed in the support I, and the coil pins are inserted into the pin grooves. For the normally open relay, the baffle plate II can limit the movable contact piece when the input circuit is powered off, so that the situation that the movable contact piece cannot be in contact with the static contact piece after the input circuit is powered on due to the fact that the movable contact piece is too far away from the static contact piece can be effectively avoided; the baffle plate I and the baffle plate II are integrally designed with the bottom plate, so that the manufacturing cost is low, the installation is convenient, the support can be fixed, the installation of parts in the relay is more stable, and the failure of the relay caused by the displacement of the parts in the use process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control devices, in particular to an electromagnetic relay. Background Art

[0002] Electromagnetic relay is an electronic control device that controls the system (also known as the input circuit) and the controlled system (also known as the output circuit). It is usually used in automatic control circuits to achieve an "automatic switch" that uses weak current and low voltage to control strong current and high voltage. It plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit. The strength of the insulation performance between the coil and the yoke in the electromagnetic relay determines the size of its withstand voltage. When the voltage increases, the distance between the coil and the yoke is too small, causing the two to conduct, the relay to fail, and the stability is poor. Utility Model Content

[0003] In view of the defects of the existing electromagnetic relays, the technical problem to be solved by the utility model is to provide an electromagnetic relay with good stability, low manufacturing cost and easy installation.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, the utility model is realized by the following technical measures: an electromagnetic relay, including a base plate, a frame, a yoke, an armature, a static contact piece, a moving contact piece, a coil pin, and a shell, wherein one side of the top of the base plate extends upward to form a baffle I, and the frame and the yoke are respectively arranged on both sides of the baffle I, a coil column is provided in the middle of the frame, an iron core is inserted in the coil column, and a bracket I and a bracket II are respectively provided at both ends of the frame, and one side of the bracket II is provided with two internally connected static contact piece grooves; one end of the yoke is connected to the bracket I, and the other end is connected to the armature through the moving contact piece; the moving contact piece is inserted in the middle of the two static contact piece grooves, and one end of the moving contact piece extends downward to form a pin II; the static contact piece is inserted in the static contact piece groove, and a static contact point and a pin III are provided on the static contact piece.

[0005] Furthermore, a yoke groove is provided on the bracket I, the yoke is "L"-shaped, and one end of the yoke is inserted into the yoke groove of the bracket I.

[0006] Furthermore, the bottom plate is provided with a pin hole, a moving contact hole and a stationary contact hole, the coil pin is led out from the pin hole of the bottom plate, the pin II is led out from the moving contact hole of the bottom plate, and the pin III is led out from the stationary contact hole of the bottom plate.

[0007] Furthermore, the bracket I is provided with two pin grooves which are symmetrically distributed relative to the coil column, and the coil pins are inserted into the pin grooves.

[0008] Furthermore, the electromagnetic relay is a switching relay, the number of the static contacts is two, the static contacts are divided into normally open static contacts and normally closed static contacts, and the static contacts are symmetrically distributed relative to the moving contacts.

[0009] Furthermore, the electromagnetic relay is a normally open relay, the number of the static contact piece is one, the static contact piece is a normally open static contact piece, a baffle II is provided on the bottom plate, and the normally open static contact piece and baffle II are respectively inserted in the static contact piece slot.

[0010] Furthermore, the baffle II is formed by extending upward from one side of the top of the bottom plate, and the baffle II is integrated with the bottom plate.

[0011] Compared with the prior art, the advantages of the utility model are: in this electromagnetic relay, baffle I isolates the coil from the yoke iron, which can effectively increase the withstand voltage value of the relay and improve the stability during operation; for the normally open relay, baffle II can limit the moving contact piece when the input circuit is powered off, which can effectively avoid the situation where the moving contact piece is too far away from the static contact piece, resulting in the moving contact piece being unable to contact the static contact piece after the input circuit is powered on; the integrated design of baffle I and baffle II with the base plate has low manufacturing cost and is easy to install. At the same time, it can play the role of a fixed bracket, making the installation of components in the relay more stable and avoiding the failure of the relay caused by the displacement of parts during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0013] Figure 1 It is a schematic diagram of the overall structure of an electromagnetic relay described in the utility model;

[0014] Figure 2 This is a schematic diagram of the explosion structure of an electromagnetic relay described in the utility model;

[0015] Figure 3 It is a structural schematic diagram of the skeleton described in the utility model;

[0016] Figure 4 It is a structural schematic diagram of the iron core described in the utility model;

[0017] Figure 5 It is a structural schematic diagram of the bottom plate described in the utility model.

[0018] Explanation of the reference numerals: 1. bottom plate; 101. baffle plate I; 102. pin hole; 103. static contact hole; 104. baffle plate II; 105. moving contact hole; 2. frame; 201. coil column; 202. bracket I; 203. bracket II; 204. yoke iron slot; 205. static contact slot; 206. iron core; 207. pin slot; 3. yoke; 4. armature; 5. static contact; 501. static contact; 502. pin III; 503. normally open static contact; 504. normally closed static contact; 6. moving contact; 601. pin II; 7. coil pin; 8. housing. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0020] In the description of the present utility innovation, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "bottom", "top", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility innovation and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility innovation. Example

[0021] Please refer to Figure 1-Figure 4The electromagnetic relay provided in this embodiment is a switching relay, including a base plate 1, a frame 2, a yoke 3, an armature 4, a static contact piece 5, a moving contact piece 6, a coil pin 7 and a housing 8. The base plate 1 is provided with a pin hole 102, a moving contact piece hole 105 and a static contact piece hole 103. One side of the top of the base plate 1 extends upward to form a baffle Ⅰ101. The frame 2 and the yoke 3 are respectively arranged on both sides of the baffle Ⅰ101; the middle part of the frame 2 is a coil column 201, one end is a bracket Ⅰ202, and the other end is a bracket Ⅱ203. An iron core 206 is inserted in the coil column 201, and a yoke groove 204 is provided at the outer end of the bracket Ⅰ202, and two pin grooves 207 are provided inside. The pin grooves 207 are symmetrically distributed relative to the coil column 201. The coil pin 7 is inserted in the pin groove 207 and is led out from the pin hole 102 at the bottom of the base plate 1. The bracket Two internally connected static contact slots 205 are provided on one side of Ⅱ203; the yoke 3 is "L"-shaped, one end of which is inserted into the yoke slot 204 of the bracket Ⅰ202, and the other end is connected to the armature 4 through the moving contact piece 6; the moving contact piece 6 is inserted between the two static contact slots 205, and one end of the moving contact piece 6 extends downward to form a pin Ⅱ601, and the pin Ⅱ601 of the moving contact piece 6 is led out from the moving contact piece hole 105 at the bottom of the bottom plate 1; there are two static contacts 5, which are divided into a normally open static contact piece 503 and a normally closed static contact piece 504. The two static contacts 5 are inserted in the static contact slots 205, and a static contact point 501 is provided on one side of the upper part of the static contact piece 5, and a pin III502 is provided on the lower part. The static contacts 501 are symmetrically distributed relative to the moving contact piece 6, and the pin III502 of the static contact piece 5 passes through the static contact slot 205 and is led out from the static contact piece hole 103 at the bottom of the bottom plate 1.

[0022] The electromagnetic relay provided in this embodiment has a coil sleeved on the coil column 201 of the frame 2 when in use, the two ends of the coil are respectively connected to one end of the two coil pins 7, the other ends of the two coil pins 7 are connected to the input circuit, the pin II 601 and the pin III 502 of the normally closed static contact piece 504 are connected to the output circuit I, the pin II 601 and the pin III 502 of the normally open static contact piece 503 are connected to the output circuit II, when the input circuit is powered off, the moving contact piece 6 is in a natural state, and there is a gap between the armature 4 and the iron core 206 of the frame 2 The gap is formed, the moving contact piece 6 contacts the static contact 501 of the normally closed static contact piece 504. At this time, the pin II 601 is connected with the pin III 502 of the normally closed static contact piece 504, and the output circuit I is energized; when the input circuit is energized, the coil is energized, the iron core 206 and the coil form an electromagnet to generate an electromagnetic field, the armature 4 is attracted by the coil and fits with the iron core 206 of the skeleton 2, the moving contact piece 6 contacts the static contact 501 of the normally open static contact piece 503, at this time, the pin II 601 is connected with the pin III 502 of the normally open static contact piece 503, and the output circuit II is energized.

[0023] In an electromagnetic relay provided in this embodiment, a baffle Ⅰ101 isolates the coil from the yoke 3, which can effectively increase the withstand voltage of the relay and improve its stability during operation; the integrated design of the baffle Ⅰ101 and the base plate 1 has low manufacturing cost and is easy to install. At the same time, it can also serve as a fixed bracket, making the installation of components in the relay more stable and avoiding failure of the relay due to displacement of parts during use. Example

[0024] Please refer to Figure 5 The electromagnetic relay provided in this embodiment is a normally open relay. Compared with the technical solution of Example 1, the differences compared with the embodiment are as follows: there is one static contact piece 5, and the normally open static contact piece 5 and the baffle II 104 are respectively inserted into the static contact piece slot 205 of the skeleton 2. The baffle II 104 is an integral part of the base plate 1. When installing, the baffle II 104 is inserted into the static contact piece hole 103 from the bottom of the skeleton 2.

[0025] The electromagnetic relay provided in this embodiment, when in use, a coil is sleeved on the coil column 201 of the skeleton 2, and the two ends of the coil are respectively connected to one end of the two coil pins 7, and the other ends of the two coil pins 7 are connected to the input circuit, and the pin II 601 and the pin III 502 of the normally open static contact piece 503 are connected to the output circuit. When the input circuit is powered off, the moving contact piece 6 is in a natural state, there is a gap between the armature 4 and the iron core 206 of the skeleton 2, the moving contact piece 6 is in contact with the baffle II 104, and the output circuit is powered off; when the input circuit is powered on, the coil is powered on, the iron core 206 and the coil form an electromagnet to generate an electromagnetic field, the armature 4 is attracted by the coil and fits with the iron core 206 of the skeleton 2, the moving contact piece 6 is in contact with the static contact 501 of the normally open static contact piece 503, and at this time, the pin II 601 is connected with the pin III 502 of the normally open static contact piece 503, and the output circuit is powered on.

[0026] In an electromagnetic relay provided by the present embodiment, baffle I101 isolates the coil from the yoke 3, which can effectively increase the withstand voltage value of the relay and improve its stability during operation; baffle II104 can limit the moving contact piece 6 when the input circuit is powered off, which can effectively prevent the moving contact piece 6 from being too far away from the static contact piece 5, resulting in the moving contact piece 6 being unable to contact the static contact piece 5 after the input circuit is powered on; the integrated design of baffle I101 and baffle II104 and the base plate 1 has low manufacturing cost and is easy to install. At the same time, it can play the role of a fixed bracket, making the installation of components in the relay more stable and avoiding the failure of the relay caused by the displacement of parts during use.

[0027] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An electromagnetic relay, comprising a base plate, a frame, a yoke, an armature, a stationary contact piece, a moving contact piece, an iron core, a coil pin, and a housing, characterized in that: One side of the top of the bottom plate extends upward to form a baffle I, the frame and the yoke are respectively arranged on both sides of the baffle I, a coil column is provided in the middle of the frame, an iron core is inserted in the coil column, and brackets I and II are respectively provided at both ends of the frame, and one side of the bracket II is provided with two internally connected static contact piece grooves; one end of the yoke is connected to the bracket I, and the other end is connected to the armature through the moving contact piece; the moving contact piece is inserted in the middle of the two static contact piece grooves, and one end of the moving contact piece extends downward to form a pin II; the static contact piece is inserted in the static contact piece groove, and a static contact point and a pin III are provided on the static contact piece.

2. The electromagnetic relay according to claim 1, characterized in that: The bracket I is provided with a yoke groove, the yoke is "L" shaped, and one end of the yoke is inserted into the yoke groove of the bracket I.

3. The electromagnetic relay according to claim 1, characterized in that: The bottom plate is provided with a pin hole, a moving contact hole and a stationary contact hole. The coil pin is led out from the pin hole of the bottom plate, the pin II is led out from the moving contact hole of the bottom plate, and the pin III is led out from the stationary contact hole of the bottom plate.

4. The electromagnetic relay according to claim 3, characterized in that: The bracket I is provided with two pin grooves which are symmetrically distributed relative to the coil column, and the coil pins are inserted into the pin grooves.

5. The electromagnetic relay according to claim 1, characterized in that: The electromagnetic relay is a switching relay, the number of the static contacts is two, the static contacts are divided into normally open static contacts and normally closed static contacts, and the static contacts are symmetrically distributed relative to the moving contacts.

6. The electromagnetic relay according to claim 1, characterized in that: The electromagnetic relay is a normally open relay, the number of the static contact piece is one, the static contact piece is a normally open static contact piece, a baffle II is provided on the bottom plate, and the normally open static contact piece and the baffle II are respectively inserted into the static contact piece slot.

7. The electromagnetic relay according to claim 6, characterized in that: The baffle II is formed by extending upward from one side of the top of the bottom plate, and the baffle II is integrated with the bottom plate.

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