Relay with insulating cover

Abstract

The utility model provides a relay with an insulating cover. The relay comprises a housing; the coil is located in the shell; the contact assembly comprises a static contact and a moving contact; one end of the movable contact spring is connected with the static contact, the other end of the movable contact spring is provided with a first pin, and the first pin penetrates through the shell and extends to the lower end of the shell; one end of the positioning sheet is connected with the moving contact, the other end of the positioning sheet is provided with a second pin, and the second pin penetrates through the shell and extends to the lower end of the shell; and the insulating assembly comprises a first insulating plate and a second insulating plate, the first insulating plate is arranged between the coil and the movable contact spring, and the second insulating plate is arranged between the coil and the positioning sheet. The defect that enough creepage distance and air gap between the coil and the positioning sheet and between the coil and the movable contact spring cannot be guaranteed, so that breakdown voltage occurs in the working process of the relay is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a relay with an insulating cover. Background Art

[0002] A relay is an electronic control device that has a control system and a controlled system. It is usually used in automatic control circuits. It is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit. Figure 4 As shown, in the prior art, the relay includes a coil and a positioning piece and a moving spring piece arranged on both sides of the coil, a static contact is arranged at one end of the positioning piece, and a pin is arranged at the other end, a moving contact is arranged at one end of the moving spring piece, and a pin is also arranged at the other end, but due to the limited size of the overall structure of the relay in the prior art, it is impossible to ensure that there is sufficient creepage distance and space distance between the coil and the positioning piece and the moving spring piece, which will cause the relay to have a breakdown voltage during operation. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to overcome the defect that the overall structure size of the relay in the prior art is limited, and it is impossible to ensure that there is sufficient creepage distance and air gap between the coil and the positioning plate and the moving spring piece, which will lead to the defect that the relay will have a breakdown voltage during operation, thereby providing a relay with an insulating cover that can increase the spatial distance and creepage distance between the coil and the positioning plate and the moving spring piece.

[0004] To this end, the utility model provides a relay with an insulating cover, comprising: a shell; a coil, located inside the shell; a contact assembly, comprising a static contact and a moving contact; a moving spring piece, one end of which is connected to the static contact, and the other end of which is provided with a first pin, and the first pin extends through the shell to the lower end of the shell; a positioning piece, one end of which is connected to the moving contact, and the other end of which is provided with a second pin, and the second pin extends through the shell to the lower end of the shell; an insulating assembly, comprising a first insulating plate and a second insulating plate, the first insulating plate being provided between the coil and the moving spring piece, and the second insulating plate being provided between the coil and the positioning piece.

[0005] Further: the first insulating plate includes a first partition plate and a first baffle plate arranged on both sides of the first partition plate, the first partition plate and the first baffle plate are arranged to form an "I"-shaped structure, the side of the first partition plate opposite to the movable spring sheet and the first partition plate form a wrapping cavity for wrapping the movable spring sheet, the side of the first partition plate facing away from the wrapping cavity forms a positioning block, the positioning block is connected to the first baffle plate, and the positioning block is provided with a first avoidance slope for avoiding the coil.

[0006] Furthermore: a positioning assembly for positioning the coil is connected to the shell, the positioning assembly includes a positioning column, an upper connecting plate arranged above the positioning column, and a lower connecting plate arranged below the positioning column, and the first partition plate is provided with a first slot for the upper connecting plate to be inserted into.

[0007] Furthermore: the shell is provided with positioning grooves for fixing the upper and lower ends of the second insulating plate, the second insulating plate is fixed to the end of the coil facing away from the first insulating plate, the second insulating plate includes a second partition plate and a second shielding plate arranged at both ends of the second partition plate, the second partition plate and the second shielding plate are arranged to form a "["-shaped structure, and the position where the second partition plate and the second shielding plate are connected is provided with a second avoidance slope for avoiding the coil.

[0008] Further: a plurality of material saving grooves are arranged on the partition plate.

[0009] The technical solution of the utility model has the following advantages:

[0010] 1. The utility model provides a relay with an insulating cover, in which a first insulating plate and a second insulating plate are respectively arranged on both sides of the coil, and the movement of the moving reed piece controls the closing or separation of the static contact and the moving contact. The moving reed piece is provided with 220V AC power, and the coil is used to drive the movement of the relay, which is 12V DC power. (The specific voltage value will be related to the actual usage scenario, and the value here is only used for example) If there is not enough creepage distance between the two, the relay is prone to high and low voltage breakdown problems. In this embodiment, a first insulating plate is provided between the coil and the moving reed piece, and the creepage distance between the coil and the moving reed piece needs to cross the insulating plate to reach the moving reed piece, thereby increasing the creepage distance and air gap between the coil and the moving reed piece without changing the size structure of the relay. Similarly, by setting the second insulating plate, the creepage distance and air gap between the coil and the positioning plate can also be increased.

[0011] 2. The utility model provides a relay with an insulating cover, wherein the first insulating plate includes a first partition plate in an "I" shape and two first shielding plates, and the first partition plate and the two first shielding plates form a cavity (a wrapping cavity) for wrapping a moving reed and a cavity for wrapping a partial structure of the coil on the front and rear sides respectively, and the first partition plate is separated from the two cavities. The first partition plate is made of insulating material, which can fully insulate the coil and the moving reed and effectively increase the spatial distance of the creepage distance between the two. By setting the positioning block and the second avoidance slope, the coil can be effectively avoided, so that the first insulating plate is installed between the coil and the moving reed. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is the overall structural diagram of the relay;

[0014] Figure 2 This is the structural diagram of the relay from another angle;

[0015] Figure 3 It is the cross-sectional structure diagram of the relay;

[0016] Figure 4 is a schematic structural diagram of a first insulating plate;

[0017] Figure 5 is a schematic structural diagram of the first insulating plate from another angle;

[0018] Figure 6 is a schematic structural diagram of a second insulating plate;

[0019] Figure 7 This is a structural diagram of the positioning component.

[0020] Description of reference numerals:

[0021] 1. Shell; 11. Positioning groove; 2. Coil; 3. Contact assembly; 31. Stationary contact; 32. Moving contact; 4. Moving spring; 41. First pin; 5. Positioning plate; 51. Second pin; 6. Insulation assembly; 61. First insulating plate; 611. First partition plate; 612. First shielding plate; 62. Second insulating plate; 621. Second partition plate; 622. Second shielding plate; 7. Wrapping cavity; 71. Positioning block; 72. First avoidance slope; 73. Second avoidance slope; 8. Positioning assembly; 81. Positioning column; 82. Upper connecting plate; 83. Lower connecting plate; 84. First card slot; 9. Material saving slot. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] Example

[0027] The present embodiment provides a relay with an insulating cover, comprising: a housing 1; a coil 2, located inside the housing 1; a contact assembly 3, comprising a static contact 31 and a moving contact 32; a moving spring 4, one end of which is connected to the static contact 31, and the other end of which is provided with a first pin 41, and the first pin 41 extends through the housing 1 to the lower end of the housing 1; a positioning piece 5, one end of which is connected to the moving contact 32, and the other end of which is provided with a second pin 51, and the second pin 51 extends through the housing 1 to the lower end of the housing 1; an insulating assembly 6, comprising a first insulating plate 61 and a second insulating plate 62, the first insulating plate 61 is provided between the coil 2 and the moving spring 4, and the second insulating plate 62 is provided between the coil 2 and the positioning piece 5.

[0028] The above specific improvements are: Figure 1-Figure 3As shown, compared with the prior art, a first insulating plate 61 and a second insulating plate 62 are respectively provided on both sides of the coil 2, and the movement of the movable spring piece 4 controls the closing or separation of the static contact 31 and the movable contact 32. The movable spring piece 4 is provided with 220V AC power, and the coil 2 is used to drive the movement of the relay, which is 12V DC power. (The specific voltage value will be related to the actual usage scenario, and the value here is only used for example) If there is not enough creepage distance between the two, the relay is prone to high and low voltage breakdown problems. In this embodiment, a first insulating plate 61 is provided between the coil 2 and the movable spring piece 4, and the creepage distance between the coil 2 and the movable spring piece 4 needs to cross the insulating plate to reach the movable spring piece 4, so that the creepage distance and air gap between the coil 2 and the movable spring piece 4 can be increased without changing the size structure of the relay. Similarly, by setting the second insulating plate 62, the creepage distance and air gap between the coil 2 and the positioning piece 5 can also be increased.

[0029] On the basis of the above embodiment: the first insulating plate 61 includes a first partition plate 611 and a first baffle plate 612 arranged on both sides of the first partition plate 611, the first partition plate 611 and the first baffle plate 612 are arranged to form an "I"-shaped structure, the side of the first partition plate 611 opposite to the movable spring sheet 4 and the first partition plate 611 form a wrapping cavity 7 for wrapping the movable spring sheet 4, the side of the first partition plate 611 facing away from the wrapping cavity 7 forms a positioning block 71, the positioning block 71 is connected to the first baffle plate 612, and the positioning block 71 is provided with a first avoidance slope 72 for avoiding the coil 2.

[0030] The above specific improvements are: Figure 4 and Figure 5 As shown, the first insulating plate 61 includes a first partition plate 611 in an "I"-shaped design and two first baffle plates 612. The first partition plate 611 and the two first baffle plates 612 form a cavity (wrapping cavity 7) for wrapping the movable spring piece 4 and a cavity for wrapping a partial structure of the coil 2 on the front and rear sides respectively. The two cavities are separated by the first partition plate 611, which is made of insulating material and can fully insulate the coil 2 and the movable spring piece 4, effectively increasing the spatial distance of the creepage distance between the two. By setting the positioning block 71 and the second avoidance slope 73, the coil 2 can be effectively avoided, so that the first insulating plate 61 is installed between the coil 2 and the movable spring piece 4.

[0031] On the basis of the above embodiment: the shell 1 is connected to a positioning assembly 8 for positioning the coil 2, the positioning assembly 8 includes a positioning column 81, an upper connecting piece 82 arranged above the positioning column 81, and a lower connecting piece 83 arranged below the positioning column 81, and the first partition plate 611 is provided with a first card slot 84 for the upper connecting piece 82 to be inserted into.

[0032] The above specific improvements are: Figure 7 As shown, the positioning assembly 8 includes a positioning column 81, an upper connecting piece 82 arranged above the positioning column 81, and a lower connecting piece 83 arranged below the positioning column 81. During installation, the coil 2 is sleeved on the outside of the positioning column 81, and the upper connecting piece 82 and the lower connecting piece 83 fix the upper end and the lower end of the coil 2. Through the setting of the first slot 84, the position of the fixed assembly can be effectively positioned.

[0033] On the basis of the above embodiment: the shell 1 is provided with positioning grooves 11 for fixing the upper and lower ends of the second insulating plate 62, the second insulating plate 62 is fixed to the end of the coil 2 facing away from the first insulating plate 61, the second insulating plate 62 includes a second partition plate 621 and a second baffle plate 622 arranged at both ends of the second partition plate 621, the second partition plate 621 and the second baffle plate 622 are arranged to form a "["-shaped structure, and the portion where the second partition plate 621 and the second baffle plate 622 are connected is provided with a second avoidance slope 73 for avoiding the coil 2.

[0034] The above specific improvements are: Figure 1 and Figure 6 As shown, a positioning groove 11 for fixing the second insulating plate 62 can be provided. By setting the positioning groove 11, the position of the second insulating plate 62 can be effectively fixed, and by setting the second insulating plate 62, the positioning plate 5 and the coil 2 can be separated, and the creepage distance and the spatial distance between the positioning plates 5 can be extended.

[0035] On the basis of the above embodiment: a plurality of material saving slots 9 are provided on the partition plate.

[0036] The above specific improvement is: by setting the material saving groove 9, it is possible to achieve a certain degree of material saving effect without affecting the performance of the relay.

[0037] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A relay with an insulating cover, characterized in that: include: Housing (1); The coil (2) is located inside the housing (1); A contact assembly (3), comprising a stationary contact (31) and a moving contact (32); A movable spring (4), one end of which is connected to the stationary contact (31), and the other end of which is provided with a first pin (41), the first pin (41) passing through the housing (1) and extending to the lower end of the housing (1); A positioning piece (5), one end of which is connected to the moving contact (32), and the other end of which is provided with a second pin (51), wherein the second pin (51) passes through the housing (1) and extends to the lower end of the housing (1); The insulating assembly (6) comprises a first insulating plate (61) and a second insulating plate (62), wherein the first insulating plate (61) is arranged between the coil (2) and the movable spring plate (4), and the second insulating plate (62) is arranged between the coil (2) and the positioning plate (5).

2. A relay with an insulating cover according to claim 1, characterized in that: The first insulating plate (61) comprises a first partition plate (611) and first shielding plates (612) arranged on both sides of the first partition plate (611); the first partition plate (611) and the first shielding plates (612) are arranged to form an "I"-shaped structure; a side of the first partition plate (611) opposite to the movable spring sheet (4) forms a wrapping cavity (7) for wrapping the movable spring sheet (4) with the first partition plate (611); a positioning block (71) is formed on a side of the first partition plate (611) facing away from the wrapping cavity (7); the positioning block (71) is connected to the first shielding plates (612); and a first avoidance slope (72) for avoiding the coil (2) is provided on the positioning block (71).

3. A relay with an insulating cover according to claim 2, characterized in that: The housing (1) is connected to a positioning assembly (8) for positioning the coil (2), the positioning assembly (8) comprising a positioning column (81), an upper connecting piece (82) arranged above the positioning column (81), and a lower connecting piece (83) arranged below the positioning column (81), and the first partition plate (611) is provided with a first slot (84) for the upper connecting piece (82) to be inserted into.

4. A relay with an insulating cover according to any one of claims 1 to 3, characterized in that: The shell (1) is provided with positioning grooves (11) for fixing the upper and lower ends of the second insulating plate (62); the second insulating plate (62) is fixed to the end of the coil (2) facing away from the first insulating plate (61); the second insulating plate (62) comprises a second partition plate (621) and second shielding plates (622) arranged at both ends of the second partition plate (621); the second partition plate (621) and the second shielding plate (622) are arranged to form a "["-shaped structure; a second avoidance slope (73) for avoiding the coil (2) is arranged at the portion where the second partition plate (621) and the second shielding plate (622) are connected.

5. A relay with an insulating cover according to claim 4, characterized in that: A plurality of material saving slots (9) are arranged on the partition plate.

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