CN107546068B - Protective relay - Google Patents
Protective relay Download PDFInfo
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- CN107546068B CN107546068B CN201710884674.6A CN201710884674A CN107546068B CN 107546068 B CN107546068 B CN 107546068B CN 201710884674 A CN201710884674 A CN 201710884674A CN 107546068 B CN107546068 B CN 107546068B
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- protective relay
- clamping
- bottom shell
- armature
- yoke
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Abstract
The invention relates to the technical field of relays, in particular to a protective relay which comprises a bottom shell, two power terminals and a protective resistor, wherein the two power terminals are inserted into the bottom shell, the protective resistor is connected between the two power terminals, the bottom shell is provided with a mounting groove used for accommodating the protective resistor, each power terminal is provided with a clamping part, the clamping part is provided with a clamping groove, two ends of the protective resistor are respectively arranged in the two clamping grooves, and the clamping part is accommodated in the mounting groove. According to the protective relay, the power terminal is provided with the clamping part for clamping the protective resistor, the clamping part is provided with the clamping groove for clamping the protective resistor, the bottom shell is provided with the mounting groove for accommodating the clamping part, so that the protective resistor is clamped in the clamping groove and mounted in the mounting groove, and the protective resistor is firm in mounting, stable in structure and good in protection.
Description
Technical Field
The invention relates to the technical field of relays, in particular to a protective relay.
Background
A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement. It has an interactive relationship between a control system (also called an input loop) and a controlled system (also called an output loop). It is commonly used in automated control circuits, which are actually a "recloser" that uses low current to control high current operation. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.
At present, relays in the market have an interactive relationship between a control system (also called an input loop) and a controlled system (also called an output loop), but have a problem that the relay is easily damaged when the control system is in a power-on state for a long time, and a protection resistor needs to be added, but the protection resistor is installed in the relay insecurely and is easily in poor contact, so that the relay is damaged by overlarge current.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a protective relay, wherein a power terminal is provided with a clamping part for clamping a protective resistor, the clamping part is provided with a clamping groove for clamping the protective resistor, a bottom shell is provided with a mounting groove for accommodating the clamping part, so that the protective resistor is clamped in the clamping groove and mounted in the mounting groove, and the protective resistor is firmly mounted, stable in structure and good in protection.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a protective relay, includes the drain pan, inserts two power terminals of locating the drain pan and connects the protective resistor between two power terminals, the drain pan is equipped with the mounting groove that is used for holding protective resistor, and every power terminal all is equipped with the clamping part, and the clamping part is equipped with the centre gripping groove, and protective resistor's both ends are installed respectively in two centre gripping inslot, and the mounting groove is located to the clamping part holding.
The protective relay further comprises an electromagnetic device, the two power terminals are used for supplying power to the electromagnetic device, the electromagnetic device is provided with a clamping groove clamped with the power terminals, the power terminals are provided with bending parts, the bending parts and the clamping and supporting parts are arranged in a crossed mode, and the bending parts penetrate through the clamping groove.
The protective relay further comprises a linking device, the linking device comprises a yoke, an armature and a movable reed, the yoke is connected with the bottom shell in a clamped mode, one end of the movable reed is arranged on the yoke, the other end of the movable reed is connected with the armature, and the electromagnetic device is provided with a fixed connecting end used for connecting the yoke and a working end used for attracting the armature.
Wherein, the movable spring is provided with two lugs extending out of the armature, and the two lugs are provided with movable contacts.
The protective relay further comprises two output terminals inserted in the bottom shell, the two output terminals are provided with static contacts, and the two movable contacts are respectively used for conducting or disconnecting the static contacts of the two output terminals.
One end of the armature iron butts against the yoke iron, the lug protrudes out of the other end of the armature iron, the moving contact is located at one end of the lug protruding out of the armature iron, and the static contacts of the two output terminals are located in the same plane.
The bottom shell is further provided with a side plate for blocking the movable contact, and the movable contact is located between the fixed contact and the side plate.
The yoke is provided with three fixing feet which are respectively positioned at one end, the middle part and the other end of the yoke, and the fixing feet are arranged in the bottom shell.
The protective relay further comprises a shell covering the outer side of the bottom shell, and the shell is provided with a side groove for installation.
The shell is further provided with a mounting plate, one end of the mounting plate is contained in the side groove, and the other end of the mounting plate protrudes out of the shell.
The invention has the beneficial effects that: according to the protective relay, the power terminal is provided with the clamping part for clamping the protective resistor, the clamping part is provided with the clamping groove for clamping the protective resistor, the bottom shell is provided with the mounting groove for accommodating the clamping part, so that the protective resistor is clamped in the clamping groove and mounted in the mounting groove, and the protective resistor is firm in mounting, stable in structure and good in protection.
Drawings
The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived on the basis of the following drawings without inventive effort.
Fig. 1 is a schematic structural view of a bottom case, a power terminal and a protection resistor of the present invention.
Fig. 2 is a schematic structural diagram of the invention after the housing is hidden.
Fig. 3 is a schematic structural diagram of the power supply terminal, the electromagnetic device and the engaging device of the present invention.
Fig. 4 is an exploded view of the present invention.
The reference numerals include:
1-bottom shell; 11-mounting groove; 12-side plate;
2-power supply terminal; 21-a clamping part; 22-fold; 211-clamping groove;
3-protective resistor;
4-an electromagnetic device; 41-clamping groove; 42-fixed connection end; 43-working end;
5-engagement means; 51-yoke iron; 511-fixed foot; 52-armature; 53-movable reed; 531 — moving contact;
6-output terminal; 61-stationary contact;
7-a housing; 71-side groove; 72-mounting plate.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings.
As shown in fig. 1 to 4, a protective relay includes a bottom case 1, two power terminals 2 inserted in the bottom case 1, and a protective resistor 3 connected between the two power terminals 2, wherein the bottom case 1 is provided with a mounting groove 11 for accommodating the protective resistor 3, each power terminal 2 is provided with a clamping portion 21, the clamping portion 21 is provided with a clamping groove 211, two ends of the protective resistor 3 are respectively installed in the two clamping grooves 211, and the clamping portion 21 is accommodated in the mounting groove 11. The utility model provides a protective relay, power supply terminal 2 are equipped with the clamping part 21 that is used for centre gripping protective resistor 3, and clamping part 21 is equipped with the centre gripping groove 211 that is used for centre gripping protective resistor 3, and drain pan 1 is equipped with and is used for holding the mounting groove 11 of establishing clamping part 21, makes protective resistor 3 card locate in centre gripping groove 211 and locate mounting groove 11, and protective resistor 3 installs firmly, stable in structure, and the protectiveness is good.
The protective relay further comprises an electromagnetic device 4, the two power terminals 2 are used for supplying power to the electromagnetic device 4, the electromagnetic device 4 is provided with a clamping groove 41 clamped with the power terminals 2, the power terminals 2 are provided with bending parts 22, the bending parts 22 and the clamping and supporting parts are arranged in a crossed mode, and the bending parts 22 penetrate through the clamping groove 41. The power supply terminal 2 is vertically inserted into the bottom case 1, the bending part 22 is horizontally arranged, so that the electromagnetic device 4 is connected with the power supply terminal 2 into a whole, the connecting end which is conductive to the electromagnetic device 4 is arranged in the clamping groove 41, the power supply terminal 2 is electrically connected with the connecting end, the power supply terminal 2 is electrically connected with the electromagnetic device 4, when the electromagnetic device is used, the power supply terminal 2 is inserted into the control circuit, the electromagnetic device 4 works to generate magnetism, and therefore the disconnection and the closing of the working circuit are controlled.
The protective relay further comprises a connecting device 5, wherein the connecting device 5 comprises a yoke 51, an armature 52 and a movable spring piece 53, the yoke 51 is clamped with the bottom shell 1, one end of the movable spring piece 53 is arranged on the yoke 51, the other end of the movable spring piece 53 is connected with the armature 52, and the electromagnetic device 4 is provided with a fixed connecting end 42 used for connecting the yoke 51 and a working end 43 used for attracting the armature 52. The yoke 51 is L-shaped, the fixed connection end 42 of the electromagnetic device 4 is connected with one end of the yoke 51, the working end 43 of the electromagnetic device 4 is arranged opposite to the movable spring 53, and after the electromagnetic device 4 works, the armature 52 is attracted to approach the working end 43 of the electromagnetic device 4 and drives the movable spring 53 to approach the working end 43 of the electromagnetic device 4.
The movable spring 53 of the present invention is provided with two tabs protruding from the armature 52, both tabs being provided with a movable contact 531. The movable spring piece 53 can generate mechanical fatigue after long-term use, so that the contact sensitivity is not strong, and the movable contact 531 is provided with a lug, so that the sensitivity can be increased, and the control is more sensitive.
The protective relay of the invention also comprises two output terminals 6 inserted in the bottom shell 1, wherein both output terminals 6 are provided with static contacts 61, and the two movable contacts 531 are respectively used for conducting or disconnecting the static contacts 61 of the two output terminals 6. The output terminal 6 is used for connecting a control circuit, and when the two movable contacts 531 on the movable spring piece 53 are in contact conduction with the two fixed contacts 61, the control circuit works. Specifically, the two output terminals 6 of the present invention are located on one plane, the two movable contacts 531 of the movable spring pieces 53 are located on the other plane, and under the attraction of the electromagnetic device 4, the two movable spring pieces 53 are respectively in contact with the two output terminals 6, so that the control circuit operates.
One end of the armature 52 of the present invention abuts against the yoke 51, the tab projects from the other end of the armature 52, the movable contact 531 is located at the end of the tab projecting from the armature 52, and the stationary contacts 61 of the two output terminals 6 are located in the same plane. The yoke 51 is L-shaped, one end of the armature 52 is abutted against the yoke 51, the moving contact 531 is positioned at one end of the lug which protrudes out of the armature 52, when the electromagnetic device 4 works, the moving contact 531 is connected with the working end 43 to form a closed magnetic circuit, magnetic force lines generated by the electromagnetic coil are sealed inside, the magnetic energy is fully utilized, and the efficiency of the electromagnet is highest.
The bottom case 1 of the present invention further has a side plate 12 for blocking the moving contact 531, and the moving contact 531 is located between the fixed contact 61 and the side plate 12. When the electromagnetic device 4 works, the movable elastic end is close to the electromagnetic device 4 under the action of magnetic force, when the electromagnetic device 4 does not work, the movable elastic end recovers to a natural state and rebounds away from the electromagnetic device 4, and in the rebounding process, the movable elastic end easily rebounds to collide with the shell 7 excessively, so that the movable elastic end is damaged.
As shown in fig. 2 and 3, the shield relay of the present invention further includes a housing 7 connected to the bottom case 1, the housing 7 being provided with a side groove 71 for mounting. The housing 7 is further provided with a mounting plate 72, one end of the mounting plate 72 is accommodated in the side groove 71, and the other end of the mounting plate 72 protrudes out of the housing 7. The mounting plate 72 is mounted on the side groove 71, so that the protective relay can be tightly attached to a mounting surface, and the mounting and the use are convenient.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A protective relay, characterized in that: the bottom shell comprises a bottom shell (1), two power terminals (2) inserted in the bottom shell (1) and a protection resistor (3) connected between the two power terminals (2), wherein the bottom shell (1) is provided with a mounting groove (11) for accommodating the protection resistor (3), each power terminal (2) is provided with a clamping part (21), each clamping part (21) is provided with a clamping groove (211), two ends of the protection resistor (3) are respectively arranged in the two clamping grooves (211), and the clamping parts (21) are accommodated in the mounting groove (11);
wherein, the protective relay also comprises an electromagnetic device (4), the two power terminals (2) are used for supplying power to the electromagnetic device (4), the electromagnetic device (4) is provided with a clamping groove (41) clamped with the power terminals (2), the power terminals (2) are provided with bending parts (22), the bending parts (22) and the clamping parts (21) are arranged in a crossed way, the bending parts (22) are arranged in the clamping groove (41) in a penetrating way,
the power supply terminal (2) is vertically inserted into the bottom shell, and the bent part (22) is horizontally arranged;
wherein, the opening direction of the clamping groove (211) is the direction departing from the bending part (22);
the protective relay further comprises a connecting device (5), the connecting device (5) comprises a yoke (51), an armature (52) and a movable spring (53), the yoke (51) is connected with the bottom shell (1) in a clamping mode, one end of the movable spring (53) is installed on the yoke (51), the other end of the movable spring (53) is connected with the armature (52), and the electromagnetic device (4) is provided with a fixed connecting end (42) used for being connected with the yoke (51) and a working end (43) used for attracting the armature (52).
2. A protective relay according to claim 1, characterized in that: the movable spring (53) protrudes out of the armature (52) and is provided with two protruding sheets, and the two protruding sheets are both provided with movable contacts (531).
3. A protective relay according to claim 2, characterized in that: the protective relay further comprises two output terminals (6) inserted in the bottom shell (1), the two output terminals (6) are respectively provided with a static contact (61), and the two movable contacts (531) are respectively used for conducting or disconnecting the static contacts (61) of the two output terminals (6).
4. A protective relay according to claim 2, characterized in that: one end of the armature (52) is abutted against the yoke iron (51), the lug protrudes out of the other end of the armature (52), the movable contact (531) is positioned at one end of the lug protruding out of the armature (52), and the fixed contacts (61) of the two output terminals (6) are positioned in the same plane.
5. A protective relay according to claim 4, characterized in that: the bottom shell (1) is further provided with a side plate (12) used for blocking the movable contact (531), and the movable contact (531) is located between the fixed contact (61) and the side plate (12).
6. A protective relay according to claim 1, characterized in that: the yoke (51) is provided with three fixing feet (511), the three fixing feet (511) are respectively positioned at one end, the middle part and the other end of the yoke (51), and the fixing feet (511) are arranged in the bottom shell (1).
7. A protective relay according to claim 3, wherein: the protective relay further comprises a shell (7) covering the outer side of the bottom shell (1), and the shell (7) is provided with a side groove (71) for installation.
8. A protective relay according to claim 7, wherein: the shell (7) is further provided with a mounting plate (72), one end of the mounting plate (72) is accommodated in the side groove (71), and the other end of the mounting plate (72) protrudes out of the shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884674.6A CN107546068B (en) | 2017-09-26 | 2017-09-26 | Protective relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884674.6A CN107546068B (en) | 2017-09-26 | 2017-09-26 | Protective relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107546068A CN107546068A (en) | 2018-01-05 |
| CN107546068B true CN107546068B (en) | 2020-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710884674.6A Active CN107546068B (en) | 2017-09-26 | 2017-09-26 | Protective relay |
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| Country | Link |
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| CN (1) | CN107546068B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7120275B2 (en) * | 2020-07-07 | 2022-08-17 | 株式会社デンソーエレクトロニクス | electromagnetic relay |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007165140A (en) * | 2005-12-14 | 2007-06-28 | Nec Tokin Corp | Electromagnetic relay |
| CN201667320U (en) * | 2010-04-12 | 2010-12-08 | 宁波天波港联电子有限公司 | Relay with simple assembly of shunt resistance |
| CN201725741U (en) * | 2010-07-07 | 2011-01-26 | 厦门普利得汽车电子有限公司 | Novel assembly structure of relay resistor |
| CN204720397U (en) * | 2015-05-08 | 2015-10-21 | 信赖科技（上海）有限公司 | A kind of improved electric magnetic relay |
| CN205069520U (en) * | 2015-10-22 | 2016-03-02 | 广州汽车集团股份有限公司 | Permanent seal cooling relay |
| CN205789744U (en) * | 2016-05-25 | 2016-12-07 | 海拉（厦门）电气有限公司 | A kind of attachment structure of relay resistance or diode and terminal |
| CN207282405U (en) * | 2017-09-26 | 2018-04-27 | 三友联众集团股份有限公司 | A kind of guard relay |
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2017
- 2017-09-26 CN CN201710884674.6A patent/CN107546068B/en active Active
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| Publication number | Publication date |
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| CN107546068A (en) | 2018-01-05 |
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