electromagnetic relay

Abstract

The present invention discloses an electromagnetic relay, comprising: a housing having a partition plate that divides the interior space of the housing into upper and lower accommodation chambers; a contact system accommodated in the upper accommodation chamber of the housing and having a static contact and a movable contact; and an electromagnetic system accommodated in the lower accommodation chamber of the housing and having a coil bobbin and a magnetic conductive plate. The electromagnetic relay also includes a plurality of threaded connectors that connect and secure the coil bobbin or the magnetic conductive plate to the partition plate, thereby securing the electromagnetic system to the housing. Therefore, the present invention can conveniently and reliably secure the electromagnetic system to the housing, improve the installation reliability of the electromagnetic system, and greatly reduce costs.

Description

Technical Field

[0001] The present invention relates to an electromagnetic relay. Background Art

[0002] An electromagnetic relay generally includes a housing, a contact system, and an electromagnetic system. A partition plate (or fixed base) is formed inside the housing, which divides the internal space of the housing into upper and lower accommodation chambers. The contact system is installed in the upper accommodation chamber of the housing. The electromagnetic system is installed in the lower accommodation chamber of the housing. The electromagnetic system is used to drive the moving contact of the contact system to move. The electromagnetic system mainly includes a coil skeleton, a magnetic conductive plate, a magnetic yoke, a coil, and an iron core. The reliability of the installation of the electromagnetic system directly affects the working stability of the electromagnetic system and directly affects the performance of the electromagnetic relay. In the prior art, the magnetic yoke of the electromagnetic system is bonded to the fixed base of the housing by dispensing glue, but this dispensing method has the disadvantages of low reliability, complex dispensing process, high cost, and environmental pollution. Summary of the Invention

[0003] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0004] According to one aspect of the present invention, an electromagnetic relay is provided, comprising: a housing having a partition plate that divides the interior space of the housing into upper and lower housing chambers; a contact system housed in the upper housing chamber of the housing and comprising a stationary contact and a movable contact; and an electromagnetic system housed in the lower housing chamber of the housing and comprising a coil bobbin and a magnetic conductive plate. The electromagnetic relay further comprises a plurality of threaded connectors that connect and secure the coil bobbin or the magnetic conductive plate to the partition plate, thereby securing the electromagnetic system to the housing.

[0005] According to an exemplary embodiment of the present invention, a plurality of threaded holes are formed on the magnetic conductive plate, and a plurality of connecting holes corresponding to the plurality of threaded holes are formed on the partition plate; the plurality of threaded connectors respectively pass through the plurality of connecting holes and are respectively threadedly connected to the plurality of threaded holes, thereby connecting and fixing the magnetic conductive plate to the partition plate.

[0006] According to another exemplary embodiment of the present invention, a downwardly extending protrusion is formed on the bottom surface of the partition plate, and the protrusion rests on the magnetic conductive plate, thereby forming an accommodating space between the partition plate and the magnetic conductive plate.

[0007] According to another exemplary embodiment of the present invention, the plurality of connection holes are respectively formed on a plurality of protrusions of the partition plate.

[0008] According to another exemplary embodiment of the present invention, a plurality of threaded holes are formed on the coil frame, and a plurality of connecting holes corresponding to the plurality of threaded holes are formed on the partition plate; the plurality of threaded connectors respectively pass through the plurality of connecting holes and are respectively threadedly connected to the plurality of threaded holes, thereby connecting and fixing the coil frame to the partition plate.

[0009] According to another exemplary embodiment of the present invention, an upwardly extending protrusion is formed on the top surface of the coil frame, and the protrusion rests on the bottom surface of the partition plate, thereby forming an accommodating space between the partition plate and the coil frame; the magnetic conductive plate is accommodated in the accommodating space between the partition plate and the coil frame, and is fixed to the coil frame.

[0010] According to another exemplary embodiment of the present invention, the plurality of threaded holes are respectively formed on a plurality of protrusions of the coil bobbin.

[0011] According to another exemplary embodiment of the present invention, the electromagnetic system further includes a magnetic yoke and a coil, the coil bobbin is installed inside the magnetic yoke, and the coil is wound on a cylindrical body of the coil bobbin.

[0012] According to another exemplary embodiment of the present invention, the electromagnetic system also includes: a lower iron core, which is accommodated in the lower part of the cylindrical body of the coil skeleton and fixed to the magnetic yoke; and an upper iron core, whose lower part is accommodated in the upper part of the cylindrical body of the coil skeleton, and the upper part passes through the magnetic conductive plate, and the upper iron core can move up and down relative to the lower iron core and rotate around the central axis of the cylindrical body of the coil skeleton.

[0013] According to another exemplary embodiment of the present invention, the electromagnetic system further includes an armature, wherein the armature is located in the accommodating space and fixed to the upper iron core.

[0014] According to another exemplary embodiment of the present invention, the electromagnetic system further includes a magnetic isolation ring, and the magnetic isolation ring is arranged between the upper iron core and the magnetic conductive plate.

[0015] According to another exemplary embodiment of the present invention, the magnetic yoke is fixed to the coil bobbin or the magnetic conductive plate.

[0016] According to another exemplary embodiment of the present invention, the electromagnetic system is an integral module and is integrally installed in the lower accommodation chamber of the housing.

[0017] According to another exemplary embodiment of the present invention, the electromagnetic system is adapted to drive the movable contact of the contact system to move between a closed position in electrical contact with the stationary contact and an open position in electrical separation from the stationary contact.

[0018] According to another exemplary embodiment of the present invention, the electromagnetic relay further includes a coil terminal and a coil external wire, the coil terminal is fixed on the coil frame, and the coil external wire extends into the upper accommodation chamber of the shell and is electrically connected to the coil terminal.

[0019] According to another exemplary embodiment of the present invention, an encapsulation structure for encapsulating the coil connection terminals and the coil external connection wires is formed on the inner wall of the shell, so that the coil connection terminals and the coil external connection wires are isolated from other components in the shell.

[0020] In the aforementioned exemplary embodiments of the present invention, threaded connectors are used to fix the coil skeleton or magnetic conductive plate of the electromagnetic system to the partition plate inside the shell, so that the electromagnetic system can be conveniently and reliably fixed to the shell, thereby improving the installation reliability of the electromagnetic system and greatly reducing costs.

[0021] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram showing an electromagnetic relay according to an exemplary embodiment of the present invention;

[0023] Figure 2 show Figure 1 A three-dimensional schematic diagram of the electromagnetic system of the electromagnetic relay shown;

[0024] Figure 3 A schematic diagram showing an electromagnetic relay according to another exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall inventive concept of the present invention and should not be construed as limiting the present invention.

[0026] In addition, in the following detailed description, for ease of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments can be practiced without these specific details. In other cases, well-known structures and devices are shown in diagrammatic form to simplify the accompanying drawings.

[0027] According to a general technical concept of the present invention, an electromagnetic relay is provided, comprising: a housing having a partition plate that divides the interior space of the housing into upper and lower accommodation chambers; a contact system housed in the upper accommodation chamber of the housing and comprising a static contact and a movable contact; and an electromagnetic system housed in the lower accommodation chamber of the housing and comprising a coil bobbin and a magnetic conductive plate. The electromagnetic relay further comprises a plurality of threaded connectors that connect and secure the coil bobbin or the magnetic conductive plate to the partition plate, thereby securing the electromagnetic system to the housing.

[0028] First embodiment

[0029] Figure 1 and Figure 2 A first embodiment of the present invention is shown, wherein Figure 1 A schematic diagram showing an electromagnetic relay according to an exemplary embodiment of the present invention; Figure 2 show Figure 1 The diagram shows a three-dimensional schematic diagram of an electromagnetic system 100 of an electromagnetic relay.

[0030] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic relay primarily comprises a housing 10, a contact system (not shown), and an electromagnetic system 100. A partition plate 11 (or fixed base) is formed within the housing 10, dividing the interior of the housing 10 into upper and lower chambers. The contact system is housed in the upper chamber of the housing 10 and comprises a stationary contact and a movable contact. The electromagnetic system 100 is housed in the lower chamber of the housing 10 and comprises a coil bobbin 121 and a magnetic conductive plate 140.

[0031] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic relay further includes a plurality of threaded connectors 160. The threaded connectors 160 can be screws or other suitable threaded connectors. The plurality of threaded connectors 160 connect and fix the coil bobbin 121 to the partition plate 11, thereby fixing the electromagnetic system 100 to the housing 10.

[0032] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, a plurality of threaded holes 121b are formed on the coil bobbin 121, and a plurality of connection holes 11b corresponding to the plurality of threaded holes 121b are formed on the partition plate 11. A plurality of threaded connectors 160 respectively pass through the plurality of connection holes 11b and are respectively threadedly connected to the plurality of threaded holes 121b, thereby connecting and fixing the coil bobbin 121 to the partition plate 11.

[0033] like Figure 1and Figure 2 As shown, in the illustrated embodiment, a plurality of upwardly extending columnar protrusions 121a are formed on the top surface of the coil bobbin 121. The protrusions 121a abut against the bottom surface of the partition plate 140, thereby forming a receiving space between the partition plate 11 and the coil bobbin 121. The magnetic conductive plate 140 is received in the receiving space between the partition plate 11 and the coil bobbin 121 and is fixed to the coil bobbin 121.

[0034] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the aforementioned plurality of threaded holes 121 b are respectively formed on the plurality of protrusions 121 a of the coil bobbin 121 .

[0035] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic system 100 further includes a yoke 110 and a coil 122 . A coil bobbin 121 is installed inside the yoke 110 , and the coil 122 is wound around a cylindrical body of the coil bobbin 121 .

[0036] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic system 100 further includes a lower core 131 and an upper core 132. The lower core 131 is accommodated in the lower portion of the cylindrical body of the coil bobbin 121 and is fixed to the yoke 110. The lower portion of the upper core 132 is accommodated in the upper portion of the cylindrical body of the coil bobbin 121, and the upper portion passes through the magnetic conductive plate 140. The lower core 131 is fixed, and the upper core 132 can move up and down relative to the lower core 131 and rotate around the central axis of the cylindrical body of the coil bobbin 121.

[0037] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic system 100 also includes an armature 150, which is located in the accommodating space between the partition plate 11 and the magnetic conductive plate 140 and is fixed to the upper iron core 132, so that the armature 150 can be driven by the upper iron core 132 to move up and down and rotate around the central axis.

[0038] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic system 100 further includes a magnetic isolation ring 170, which is disposed between the upper core 132 and the magnetic conductive plate 140. The magnetic isolation ring 170 is sleeved on the upper core 132 and accommodated in a mounting hole on the magnetic conductive plate 140 that allows the upper core 132 to pass through.

[0039] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the yoke 110 is fixed to the coil bobbin 121 or the magnetic conductive plate 140 .

[0040] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic system 100 is an integral module and is integrally installed in the lower accommodation chamber of the housing 10 .

[0041] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, the electromagnetic system 100 is suitable for driving the movable contact of the contact system to move between a closed position electrically contacting with the stationary contact and an open position electrically separated from the stationary contact through the upper iron core 132 .

[0042] like Figure 1 and Figure 2 As shown, in the embodiment shown in the figure, the electromagnetic relay further includes a coil terminal 122a and a coil external wire 122b (see Figure 3 ), the coil terminal 122a is fixed on the coil frame 121, and the coil external wire 122b extends into the upper accommodation chamber of the shell 10 and is electrically connected to the coil terminal 122a.

[0043] like Figure 1 and Figure 2 As shown, in the illustrated embodiment, an encapsulation structure 10a is formed on the inner wall of the shell 10 for encapsulating the coil terminal 122a and the coil external wire 122b, so that the coil terminal 122a and the coil external wire 122b are isolated from other components in the shell 10.

[0044] First embodiment

[0045] Figure 3 A second embodiment of the present invention is shown, wherein Figure 3 A schematic diagram showing an electromagnetic relay according to another exemplary embodiment of the present invention.

[0046] like Figure 3 As shown, in the illustrated embodiment, the electromagnetic relay primarily comprises a housing 10, a contact system (not shown), and an electromagnetic system 100. A partition plate 11 (or fixed base) is formed within the housing 10, dividing the interior of the housing 10 into upper and lower chambers. The contact system is housed in the upper chamber of the housing 10 and comprises a stationary contact and a movable contact. The electromagnetic system 100 is housed in the lower chamber of the housing 10 and comprises a coil bobbin 121 and a magnetic conductive plate 140.

[0047] like Figure 3As shown, in the illustrated embodiment, the electromagnetic relay further includes a plurality of threaded connectors 160. The threaded connectors 160 can be screws or other suitable threaded connectors. The plurality of threaded connectors 160 connect and secure the magnetic conductive plate 140 to the partition plate 11, thereby securing the electromagnetic system 100 to the housing 10.

[0048] like Figure 3 As shown, in the illustrated embodiment, a plurality of threaded holes 141 are formed on the magnetic conductive plate 140, and a plurality of connecting holes 11b are formed on the partition plate 11, corresponding to the plurality of threaded holes 141. A plurality of threaded connectors 160 respectively pass through the plurality of connecting holes 11b and are respectively threadedly connected to the plurality of threaded holes 141, thereby connecting and fixing the magnetic conductive plate 140 to the partition plate 11.

[0049] like Figure 3 As shown, in the illustrated embodiment, a plurality of columnar protrusions 11a extending downward are formed on the bottom surface of the partition plate 11, and the protrusions 11a are pressed against the top surface of the magnetic conductive plate 140, thereby forming a accommodating space between the partition plate 11 and the magnetic conductive plate 140.

[0050] like Figure 3 As shown, in the illustrated embodiment, the plurality of connection holes 11 b are respectively formed on the plurality of protrusions 11 a of the partition plate 11 .

[0051] like Figure 3 As shown, in the illustrated embodiment, the electromagnetic system 100 further includes a yoke 110 and a coil 122 . A coil bobbin 121 is installed inside the yoke 110 , and the coil 122 is wound around a cylindrical body of the coil bobbin 121 .

[0052] like Figure 3 As shown, in the illustrated embodiment, the electromagnetic system 100 further includes a lower core 131 and an upper core 132. The lower core 131 is accommodated in the lower portion of the cylindrical body of the coil bobbin 121 and is fixed to the yoke 110. The lower portion of the upper core 132 is accommodated in the upper portion of the cylindrical body of the coil bobbin 121, and the upper portion passes through the magnetic conductive plate 140. The lower core 131 is fixed, and the upper core 132 can move up and down relative to the lower core 131 and rotate around the central axis of the cylindrical body of the coil bobbin 121.

[0053] like Figure 3 As shown, in the illustrated embodiment, the electromagnetic system 100 also includes an armature 150, which is located in the accommodating space between the partition plate 11 and the magnetic conductive plate 140 and is fixed to the upper iron core 132, so that the armature 150 can be driven by the upper iron core 132 to move up and down and rotate around the central axis.

[0054] like Figure 3As shown, in the illustrated embodiment, the electromagnetic system 100 further includes a magnetic isolation ring 170, which is disposed between the upper core 132 and the magnetic conductive plate 140. The magnetic isolation ring 170 is sleeved on the upper core 132 and accommodated in a mounting hole on the magnetic conductive plate 140 that allows the upper core 132 to pass through.

[0055] like Figure 3 As shown, in the illustrated embodiment, the yoke 110 is fixed to the coil bobbin 121 or the magnetic conductive plate 140 .

[0056] like Figure 3 As shown, in the illustrated embodiment, the electromagnetic system 100 is an integral module and is integrally installed in the lower accommodation chamber of the housing 10 .

[0057] like Figure 3 As shown, in the illustrated embodiment, the electromagnetic system 100 is suitable for driving the movable contact of the contact system to move between a closed position electrically contacting with the stationary contact and an open position electrically separated from the stationary contact through the upper iron core 132 .

[0058] like Figure 3 As shown, in the embodiment shown in the figure, the electromagnetic relay further includes a coil terminal 122a (see Figure 2 ) and the coil external connection wire 122b, the coil connection terminal 122a is fixed on the coil frame 121, the coil external connection wire 122b extends into the upper accommodation chamber of the shell 10 and is electrically connected to the coil connection terminal 122a.

[0059] like Figure 3 As shown, in the illustrated embodiment, an encapsulation structure 10a is formed on the inner wall of the shell 10 for encapsulating the coil terminal 122a and the coil external wire 122b, so that the coil terminal 122a and the coil external wire 122b are isolated from other components in the shell 10.

[0060] Those skilled in the art will appreciate that the embodiments described above are exemplary and that they may be improved upon. The structures described in the various embodiments may be freely combined without causing any conflict in structure or principle.

[0061] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify the preferred embodiments of the present invention and should not be construed as limiting the present invention.

[0062] Although some embodiments of the present general inventive concept have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the present general inventive concept, the scope of which is defined in the claims and their equivalents.

[0063] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element reference in the claims should not be construed as limiting the scope of the invention.

Claims

1. An electromagnetic relay comprising: The housing (10) has a partition plate (11), wherein the partition plate (11) divides the internal space of the housing (10) into an upper and a lower receiving chamber; A contact system, housed in the upper housing chamber of the housing (10), having a stationary contact and a movable contact; and The electromagnetic system (100) is accommodated in the lower accommodation chamber of the housing (10), and comprises a coil skeleton (121) and a magnetic conductive plate (140). Its characteristics are: The electromagnetic relay further comprises a plurality of threaded connectors (160), wherein the plurality of threaded connectors (160) connect and fix the coil skeleton (121) or the magnetic conductive plate (140) to the partition plate (11), thereby fixing the electromagnetic system (100) to the housing (10). wherein, when the plurality of threaded connectors (160) connect and fix the magnetic conductive plate (140) to the partition plate (11), a plurality of columnar protrusions (11a) extending downward are formed on the bottom surface of the partition plate (11), the protrusions (11a) abut against the magnetic conductive plate (140), thereby forming an accommodating space between the partition plate (11) and the magnetic conductive plate (140), and a plurality of connection holes formed in the partition plate (11) are respectively formed in the plurality of protrusions (11a) of the partition plate (11); or When the coil frame (121) is connected and fixed to the partition plate (11) by the multiple threaded connectors (160), multiple columnar protrusions (121a) extending upward are formed on the top surface of the coil frame (121), and the protrusions (121a) are pressed against the bottom surface of the partition plate, thereby forming a accommodating space between the partition plate (11) and the coil frame (121), and multiple threaded holes (121b) formed in the coil frame (121) are respectively formed in the multiple protrusions (121a) of the coil frame (121).

2. The electromagnetic relay according to claim 1, wherein: When the plurality of threaded connectors (160) connect and fix the magnetic conductive plate (140) to the partition plate (11), a plurality of threaded holes (141) are formed on the magnetic conductive plate (140), and the plurality of connection holes (11b) formed on the partition plate (11) correspond to the plurality of threaded holes (141) respectively; The plurality of threaded connectors (160) respectively pass through the plurality of connection holes (11b) and are respectively threadedly connected to the plurality of threaded holes (141), thereby connecting and fixing the magnetic conductive plate (140) to the partition plate (11).

3. The electromagnetic relay according to claim 1, wherein: When the plurality of threaded connectors (160) connect and fix the coil bobbin (121) to the partition plate (11), a plurality of connection holes corresponding to the plurality of threaded holes (121b) are formed on the partition plate (11); The plurality of threaded connectors (160) respectively pass through the plurality of connection holes and are respectively threadedly connected to the plurality of threaded holes (121b), thereby connecting and fixing the coil frame (121) to the partition plate (11).

4. The electromagnetic relay according to claim 3, wherein: The magnetic conductive plate (140) is accommodated in the accommodation space between the partition plate (11) and the coil frame (121), and is fixed to the coil frame (121).

5. The electromagnetic relay according to claim 2 or 4, characterized in that: The electromagnetic system (100) further comprises a magnetic yoke (110) and a coil (122), wherein the coil skeleton (121) is installed inside the magnetic yoke (110), and the coil (122) is wound on a cylindrical body of the coil skeleton (121).

6. The electromagnetic relay according to claim 5, characterized in that: The electromagnetic system (100) further comprises: a lower iron core (131) housed in the lower portion of the cylindrical body of the coil bobbin (121) and fixed to the yoke (110); and The upper iron core (132) has a lower portion accommodated in the upper portion of the cylindrical body of the coil frame (121), and an upper portion passing through the magnetic conductive plate (140). The upper iron core (132) can move up and down relative to the lower iron core (131) and can rotate around the central axis of the cylindrical body of the coil frame (121).

7. The electromagnetic relay according to claim 6, wherein: The electromagnetic system (100) further includes an armature (150), wherein the armature (150) is located in the accommodating space and is fixed to the upper iron core (132).

8. The electromagnetic relay according to claim 6, wherein: The electromagnetic system (100) further comprises a magnetic isolation ring (170), wherein the magnetic isolation ring (170) is arranged between the upper iron core (132) and the magnetic conductive plate (140).

9. The electromagnetic relay according to claim 5, wherein: The magnetic yoke (110) is fixed to the coil frame (121) or the magnetic conductive plate (140).

10. The electromagnetic relay according to claim 1, wherein: The electromagnetic system (100) is an integral module and is integrally installed in the lower accommodation chamber of the housing (10).

11. The electromagnetic relay according to claim 1, wherein: The electromagnetic system (100) is suitable for driving the movable contact of the contact system to move between a closed position in electrical contact with the stationary contact and an open position in electrical separation from the stationary contact.

12. The electromagnetic relay according to claim 5, wherein: The electromagnetic relay further comprises a coil connection terminal (122a) and a coil external connection wire (122b), wherein the coil connection terminal (122a) is fixed on the coil frame (121), and the coil external connection wire (122b) extends into the upper accommodation chamber of the housing (10) and is electrically connected to the coil connection terminal (122a).

13. The electromagnetic relay according to claim 12, wherein: An encapsulation structure (10a) for encapsulating the coil connection terminal (122a) and the coil external connection wire (122b) is formed on the inner wall of the housing (10), so that the coil connection terminal (122a) and the coil external connection wire (122b) are isolated from other components in the housing (10).

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