High-strength electromagnetic relay
By using a combination of sealed and fixed shell, cladding shell and iron core in the relay, combined with the return spring, the problems of unstable suction force and poor waterproofness are solved, and the stability and waterproof performance of high-strength electromagnetic relays are improved.
Patent Information
- Application Number
- CN202420887460.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-26
AI Technical Summary
Existing relays have problems such as unstable suction, small connection adaptation range, poor waterproofness and easy corrosion of metal inserts.
A high-strength electromagnetic relay is designed, using a sealed and fixed upper and lower shells, with multiple terminals and movable armatures, and the circumference of the coil is fixed by a cladding shell, combining the iron core and return spring to improve suction stability. and waterproof.
It realizes a high-strength electromagnetic relay with simple structure, reliable use, stable suction and certain waterproof performance, extends service life and improves connection adaptability.
Smart Images
Figure CN222168257U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of relays, in particular to a high-strength electromagnetic relay. Background Art
[0002] A relay is an electrical control device that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity reaches the specified requirement. It is usually used in automated control circuits and plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.
[0003] Existing relays mainly include a housing, contacts, armatures, coils and iron cores. The magnetic field is generated by turning the coil on and off to attract the armature to make the contacts turn on and off, thereby making the circuit connected to the relay turn on or off. However, in actual use, existing relays have unstable suction and a small connection adaptation range. At the same time, the coil lead wires of existing relays are mostly metal plug structures. There is a certain gap between the metal plug and the housing due to processing errors, which can easily lead to water stains entering and poor waterproof performance. After long-term use, the metal plug is prone to corrosion, resulting in an increase in the gap. In order to solve the above problems, a high-strength electromagnetic relay is proposed. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a high-strength electromagnetic relay with simple structure, reliable use, stable suction and certain waterproof performance.
[0005] In order to solve the above technical problems, the utility model is solved by the following technical solutions: a high-intensity electromagnetic relay, including a shell, the shell includes a sealed and fixed upper shell and a lower shell, an electromagnet is arranged in the lower shell, the shell is provided with a plurality of terminals, the terminals are provided with a first contact located inside the shell, an armature corresponding to the electromagnet is also movably arranged inside the shell, the armature is provided with a second contact, the electromagnet includes an iron core, a coil and a mounting shell for wrapping the coil, the mounting shell includes an upper cover plate, a lower cover plate and a covering shell, the covering shell is fixedly arranged between the upper cover plate and the lower cover plate, the shape of the covering shell matches the coil and is covered on the peripheral side of the coil, the upper cover plate is provided with a movable hole, the lower cover plate is provided with a magnetic conductive hole, the iron core is located between the upper cover plate and the lower cover plate, the armature includes a movable rod, the movable rod can be movably inserted into the movable hole, the coil is connected with a covered wire, the covered wire is sealed with the shell and passes through the shell.
[0006] Preferably, two groups of coils are arranged between the upper cover plate and the lower cover plate, the outer sides of the coils are covered with a covering shell, the middle part of the coils is penetrated by a corresponding iron core, and the outer shell is provided with an armature corresponding to the iron core one by one; the advantage is that the use function and wiring of the relay can be enriched by setting two groups of coils, and the corresponding iron core and armature.
[0007] Preferably, the armature also includes a movable plate, the movable rod is fixedly arranged in the middle of the movable plate, second contacts are arranged at both ends of the movable plate, a first return spring is arranged on the upper side of the movable plate, and a second return spring is arranged on the lower side of the movable plate; the advantage is that the stability of the movable plate and the reliability of the return can be guaranteed by the cooperation of the first return spring and the second return spring.
[0008] Furthermore, the upper shell is provided with an auxiliary hole, one end of the first return spring is embedded in the auxiliary hole, the other end of the first return spring is against the movable plate, the second return spring is sleeved on the outside of the movable rod, and the two ends of the second return spring are respectively against the movable plate and the upper cover plate; the advantage is that the auxiliary hole can ensure the stability of the first return spring to avoid deviation during the extension and retraction process, and at the same time, sleeveing the second return spring on the outside of the movable rod can ensure the extension and retraction reliability of the second return spring to avoid shaking and deviation.
[0009] Preferably, the terminal is sealed and fixedly matched with the upper shell, the lower part of the terminal extends into the outer shell and is provided with a connecting piece that matches the armature, and the first contact is arranged on the corresponding connecting piece; the advantage is that the sealing cooperation between the terminal and the upper shell can effectively improve the waterproof and dustproof performance of the electromagnetic relay.
[0010] Preferably, a separator is provided between the coil and the iron core, the separator is sleeved on the outside of the iron core, an upper retaining ring located above the coil is provided at the upper end of the separator, and a lower retaining ring located below the coil is provided at the lower end of the separator, and the upper cover plate and the lower cover plate press the separator tightly; the advantage is that the coil and the iron core can be separated by the provided separator to ensure the reliability of the coil and improve its service life; at the same time, the cooperation of the upper retaining ring and the lower retaining ring can improve the stability of the coil.
[0011] Furthermore, the separator is provided with a receiving hole for accommodating the iron core, the iron core is inserted into the receiving hole, an annular limiting ring is provided in the receiving hole, an annular boss is coaxially provided at the upper end of the iron core, and the annular boss can be axially movably arranged between the limiting ring and the upper cover plate; the advantage is that the limiting boss can be axially limited by the cooperation of the limiting ring and the upper cover plate, thereby limiting the moving stroke of the iron core, ensuring that the movable rod has a reliable moving stroke when attracting the armature while ensuring that the iron core will not slip.
[0012] Furthermore, a bushing is fixed at the lower part of the accommodating hole and abuts against the lower edge of the limiting ring. A limiting platform is provided at the lower end of the bushing, and the limiting platform abuts against the lower cover plate. The advantage is that the stability of the bushing can be ensured by cooperating with the limiting platform and the limiting ring, while reducing the wear of the partition and increasing its service life.
[0013] Furthermore, an annular liner is fixed to the upper part of the accommodating hole, and the annular liner is aligned with the annular boss; the advantage is that the wear resistance of the upper part of the separator can be increased by setting the annular liner, that is, the wear of the annular boss on the separator is reduced.
[0014] Furthermore, the upper end of the annular liner is provided with an outer edge extending outward, the upper side surface of the separator is provided with a groove, the outer edge is embedded in the groove, and the upper cover is pressed on the upper side surface of the outer edge; the advantage is that the upper cover can be reliably pressed against the outer edge through the cooperation of the provided groove, the outer edge and the upper cover, thereby achieving fixation of the annular liner and facilitating subsequent replacement and use.
[0015] Compared with the prior art, the utility model has the following beneficial effects: the waterproof and dustproof performance of the electromagnetic relay can be effectively improved by setting the sealed and fixed upper shell and lower shell, and the sealed cooperation between the coated wire and the outer shell; at the same time, the coating shell is fixedly arranged between the upper cover plate and the lower cover plate, and is covered on the peripheral side of the coil; the cooperation with the iron core can ensure that the magnetic field is concentrated through the iron core, reduce magnetic leakage, and thus improve the adsorption force on the armature. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 This is one of the overall structural diagrams of the utility model;
[0018] Figure 2 This is the second schematic diagram of the overall structure of the utility model;
[0019] Figure 3 This is a schematic diagram of the setting position of the armature of the utility model;
[0020] Figure 4 This is a schematic diagram of the coordination between the armature and the electromagnet of the utility model;
[0021] Figure 5 It is a structural schematic diagram of the electromagnet of the utility model;
[0022] Figure 6 for Figure 5 Schematic diagram of the cross-sectional structure along the core axis;
[0023] Figure 7 It is a schematic diagram of the positions of the upper cover plate, the lower cover plate and the iron core of the utility model;
[0024] Figure 8 It is a schematic diagram of the assembly of the iron core of the utility model;
[0025] Fig. 9 It is a structural schematic diagram of the iron core of the utility model;
[0026] Fig.10 It is a schematic diagram of the interior of the upper shell of the utility model. DETAILED DESCRIPTION
[0027] The utility model is described in further detail below in conjunction with the accompanying drawings.
[0028] The following description is used to disclose the utility model so that those skilled in the art can implement the utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be used for other implementation schemes, variations, improvements, equivalent schemes, and other technical solutions that do not deviate from the spirit and scope of the utility model.
[0029] Those skilled in the art should understand that, in the disclosure of the present invention, the directions or positions indicated by the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the accompanying drawings, which are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.
[0030] As attached Figure 1-9A high-intensity electromagnetic relay shown includes a shell 1, which includes a sealed and fixed upper shell 1.1 and a lower shell 1.2. An electromagnet 4 is arranged in the lower shell 1.2, and the shell is provided with four terminals 1.3. The lower ends of the terminals 1.3 are provided with first contacts 1.31 located inside the shell 1. An armature 2 corresponding to the electromagnet 4 is also movably arranged inside the shell 1, and the armature 2 is provided with a second contact. The above-mentioned electromagnet 4 includes an iron core 4.1, a coil 4.2 and a mounting shell 4.3 for wrapping the coil 4.2. The mounting shell 4.3 includes an upper cover plate 4.31, a lower cover plate 4.33 and a covering shell 4.32. The covering shell 4.32 is fixedly arranged between the upper cover plate 4.31 and the lower cover plate 4.33. The shape of the covering shell 4.32 matches the coil 4.2 and is covered on the peripheral side of the coil 4.2. The upper cover plate 4.31 is provided with a movable hole 4.34, and the lower cover plate 4.33 is provided with a magnetic conductive hole 4.35. The iron core 4.1 is located between the upper cover plate 4.31 and the lower cover plate 4.33. The armature 2 includes a movable rod 2.1, and the movable rod 2.1 can be movably inserted into the movable hole 4.34. The coil 4.2 is connected with a covering wire 6, and the covering wire 6 is sealed with the shell 1 and passes through the shell 1. The armature 2 is adsorbed by turning the coil 4.2 on and off, thereby realizing the contact or disconnection between the first contact 1.31 and the corresponding second contact. The sealed and fixed upper shell 1.1 and lower shell 1.2, as well as the sealed cooperation between the coated wire 6 and the outer shell 1, can effectively improve the waterproof and dustproof performance of the electromagnetic relay, and the coated shell 4.32 is fixedly arranged between the upper cover plate 4.31 and the lower cover plate 4.33, and is covered on the peripheral side of the coil 4.2. The cooperation with the iron core 4.1 can ensure that the magnetic field is concentrated through the iron core 4.1, reduce the leakage of magnetic flux, and thus improve the adsorption force on the armature 2. The ends of the above-mentioned coated wire 6 can be connected to various styles of connectors to improve the connection adaptability of the relay.
[0031] On the basis of the above, in order to enrich and expand the performance of the relay, two groups of coils 4.2 are arranged between the upper cover plate 4.31 and the lower cover plate 4.33, the outer sides of the coils 4.2 are covered with a covering shell 4.32, the middle of the coils 4.2 are penetrated with a corresponding iron core 4.1, and the housing 1 is provided with an armature 2 corresponding to the iron core 4.1. The two groups of coils 4.2 can be controlled to be on and off by the covering wire 6, thereby realizing the control of the first contacts 1.31 of multiple terminals and the second contacts on the armature 2.
[0032] The armature 2 of the utility model also includes a movable plate 2.2, a movable rod 2.1 is fixedly arranged in the middle of the movable plate 2.2, second contacts are arranged at both ends of the movable plate 2.2, a first return spring 4.4 is arranged on the upper side of the movable plate 2.2, and a second return spring 4.5 is arranged on the lower side of the movable plate 2.2. The cooperation between the first return spring 4.4 and the second return spring 4.5 can ensure the stability of the movable plate 2.2 and the reliability of the return.
[0033] On the basis of the above, in order to ensure the stability of the first return spring 4.4 and the second return spring 4.5, the upper shell 1.1 is provided with an auxiliary hole 1.11, one end of the first return spring 4.4 is embedded in the auxiliary hole 1.11, and the other end of the first return spring 4.4 is against the movable plate 2.2. The second return spring 4.5 is sleeved on the outside of the movable rod 2.1, and the two ends of the second return spring 4.5 are respectively against the movable plate 2.2 and the upper cover plate 4.31.
[0034] It is worth mentioning that the terminal 1.3 is sealed and fixedly matched with the upper shell 1.1, the lower part of the terminal 1.3 extends into the shell 1 and is provided with a connector that matches the armature 2, and the first contact 1.31 is provided on the corresponding connector. The sealing match between the terminal 1.3 and the upper shell 1.1 can effectively improve the waterproof and dustproof performance of the electromagnetic relay. The upper side of the lower shell 1.2 is provided with a sealing platform 1.21 that extends into the upper shell 1.1, and the upper shell 1.1 is provided with a wire hole 1.12 that is sealed and matched with the covered wire 6.
[0035] The utility model has a separator 5 between the coil 4.2 and the iron core 4.1, the separator 5 is sleeved on the outside of the iron core 4.1, the upper end of the separator 5 is provided with an upper retaining ring 5.1 located above the coil 4.2, the lower end of the separator 5 is provided with a lower retaining ring 5.2 located below the coil 4.2, and the upper cover plate 4.31 and the lower cover plate 4.33 press the separator 5. The separator 5 can separate the coil 4.2 from the iron core 4.1 to ensure the reliability of the coil 4.2 and improve its service life; at the same time, the cooperation of the upper retaining ring 5.1 and the lower retaining ring 5.2 can improve the stability of the coil 4.2. Specifically, the separator 5 is provided with a receiving hole 5.3 for accommodating the iron core 4.1. The iron core 4.1 is inserted into the receiving hole 5.3. An annular limiting ring 5.4 is provided in the receiving hole 5.3. An annular boss 4.11 is coaxially provided at the upper end of the iron core 4.1. The annular boss is axially movably provided between the limiting ring 5.4 and the upper cover plate 4.31. The limiting boss can be axially limited by the cooperation of the limiting ring 5.4 and the upper cover plate 4.31, thereby limiting the moving stroke of the iron core 4.1. When the armature 2 is attracted, it is ensured that the movable rod 2.1 has a reliable moving stroke while ensuring that the iron core 4.1 will not slip.
[0036] On the basis of the above, a bushing 5.5 is fixed at the lower part of the accommodating hole 5.3, which is abutted against the lower edge of the limiting ring 5.4. A limiting platform 5.51 is provided at the lower end of the bushing 5.5. The limiting platform 5.51 abuts against the lower cover plate 4.33. The cooperation between the limiting platform 5.51 and the limiting ring 5.4 can ensure the stability of the bushing 5.5, while reducing the wear of the partition 5 and increasing its service life.
[0037] It is worth mentioning that an annular liner 5.6 is fixed to the upper part of the receiving hole 5.3, and the annular liner 5.6 is aligned with the annular boss 4.11; the annular liner 5.6 can increase the wear resistance of the upper part of the separator 5, that is, reduce the wear of the annular boss 4.11 on the separator 5. The upper end of the annular liner 5.6 is provided with an outer edge 5.61 extending outward, and a groove 5.11 is provided on the upper side of the separator 5. The outer edge 5.61 is embedded in the groove 5.11, and the upper cover plate 4.31 is pressed on the upper side of the outer edge 5.61; the cooperation of the groove 5.11, the outer edge 5.61 and the upper cover plate 4.31 can make the upper cover plate 4.31 reliably press the outer edge 5.61, thereby realizing the fixation of the annular liner 5.6, which is convenient for subsequent replacement and use.
[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed or modified in any way.
Claims
1. A high-intensity electromagnetic relay, comprising a housing, the housing comprising a sealed upper housing and a lower housing, an electromagnet is arranged in the lower housing, the housing is provided with a plurality of terminals, the terminals are provided with a first contact located inside the housing, an armature corresponding to the electromagnet is movably arranged inside the housing, the armature is provided with a second contact, characterized in that: The electromagnet comprises an iron core, a coil and a mounting shell for wrapping the coil, the mounting shell comprises an upper cover plate, a lower cover plate and a covering shell, the covering shell is fixedly arranged between the upper cover plate and the lower cover plate, the shape of the covering shell matches the coil and is covered on the circumference of the coil, the upper cover plate is provided with a movable hole, the lower cover plate is provided with a magnetic conductive hole, the iron core is located between the upper cover plate and the lower cover plate, the armature comprises a movable rod, the movable rod can be movably inserted into the movable hole, the coil is connected with a covering wire, the covering wire is sealed with the shell and passes through the shell.
2. A high strength electromagnetic relay according to claim 1, characterized in that: Two groups of coils are arranged between the upper cover plate and the lower cover plate, the outer sides of the coils are covered with a covering shell, the middle of the coils are penetrated by an iron core, and the outer shell is provided with an armature corresponding to the iron core one by one.
3. A high strength electromagnetic relay according to claim 1, characterized in that: The armature also includes a movable plate, the movable rod is fixedly arranged in the middle of the movable plate, second contacts are arranged at both ends of the movable plate, a first return spring is arranged on the upper side of the movable plate, and a second return spring is arranged on the lower side of the movable plate.
4. A high strength electromagnetic relay according to claim 3, characterized in that: The upper shell is provided with an auxiliary hole, one end of the first return spring is embedded in the auxiliary hole, the other end of the first return spring is against the movable plate, the second return spring is sleeved on the outside of the movable rod, and the two ends of the second return spring are respectively against the movable plate and the upper cover plate.
5. A high strength electromagnetic relay according to claim 1, characterized in that: The terminal is sealed and fixedly matched with the upper shell, the lower part of the terminal extends into the shell and is provided with a connecting piece matched with the armature, and the first contact is arranged on the corresponding connecting piece.
6. A high strength electromagnetic relay according to claim 1, characterized in that: A separator is arranged between the coil and the iron core, the separator is sleeved on the outside of the iron core, an upper retaining ring located above the coil is arranged at the upper end of the separator, and a lower retaining ring located below the coil is arranged at the lower end of the separator, and the upper cover plate and the lower cover plate press the separator tightly.
7. A high strength electromagnetic relay according to claim 6, characterized in that: The separator is provided with a receiving hole for accommodating an iron core, the iron core is inserted into the receiving hole, an annular limiting ring is provided in the receiving hole, an annular boss is coaxially provided at the upper end of the iron core, and the annular boss is axially movably provided between the limiting ring and the upper cover plate.
8. A high strength electromagnetic relay according to claim 7, characterized in that: A bushing abutting against the lower edge of the limiting ring is fixed at the lower part of the accommodating hole, and a limiting platform is arranged at the lower end of the bushing, and the limiting platform abuts against the lower cover plate.
9. A high strength electromagnetic relay according to claim 7, characterized in that: An annular liner is fixed on the upper part of the accommodating hole, and the annular liner is aligned with the annular boss.
10. A high strength electromagnetic relay according to claim 9, characterized in that: The upper end of the annular liner is provided with an outer edge extending outward, the upper side of the separator is provided with a groove, the outer edge is embedded in the groove, and the upper cover plate is pressed on the upper side of the outer edge.