Relay with retaining wall

Abstract

The utility model discloses a relay with a retaining wall, which comprises a base provided with a plug-in groove; the shell is arranged outside the base in a covering mode, a retaining wall is arranged on the inner wall of the shell, and the retaining wall is inserted into the inserting groove; the magnetic circuit driving part is mounted on the base and is used for generating electromagnetic force; the contact part comprises a plurality of movable contacts and a plurality of fixed contacts, and one movable contact and one fixed contact are closed or opened in a one-to-one correspondence manner; wherein the plurality of movable contacts and the plurality of static contacts are respectively arranged on two sides of the retaining wall by taking the retaining wall as a symmetry axis. According to the relay with the retaining wall, through the arrangement of the retaining wall, an independent space is formed between each movable contact and each static contact which are closed, when the movable contacts and the static contacts are closed or disconnected to generate splashes, the flowing space of the splashes is reduced, the splashes are easier to settle, the possibility that the splashes form a loop is reduced, and the service life of the relay is prolonged. And the voltage endurance capability between the movable contact and the static contact is improved.

Description

Technical Field

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

[0002] An electromagnetic relay is an electrical device that uses electromagnetic force to drive mechanical components to move relative to each other to produce a predetermined response. It generally consists of a magnetic circuit part, a moving spring part, and a static spring part. The magnetic circuit part includes an iron core, a skeleton, a coil, an armature, and a yoke. When an electric current passes through the coil, an electromagnetic force is generated, and the armature is attracted to contact the pole face at one end of the iron core, thereby driving the moving contact of the moving spring part to close with the static contact of the static spring part; when the current in the coil disappears, the electromagnetic force also disappears, and the armature resets and separates from the pole face at one end of the iron core, so that the moving contact of the moving spring part separates from the static contact of the static spring part. In this way, by the contact or separation of the moving contact and the static contact, the on-off of the external load circuit is achieved.

[0003] In a small relay with multiple sets of contacts, due to the existence of multiple sets of moving contacts and multiple sets of static contacts, after repeated closing or opening between the moving contacts and the static contacts, the contacts will age, and splashes will be generated during subsequent closing or opening. Since the splashes deposit on the housing or the base and conduct electricity, the withstand voltage between the contacts is poor. Summary of the Utility Model

[0004] To solve at least one of the problems existing in the above-mentioned prior art, according to one aspect of the present utility model, there is provided a relay with a retaining wall, including: a base, on which a plug-in slot is provided; a housing, covering the outside of the base, a retaining wall is provided on the inner wall of the housing, and the retaining wall is inserted into the plug-in slot; a magnetic circuit driving part, installed on the base for generating electromagnetic force; a contact part, including a plurality of moving contacts and a plurality of static contacts, one moving contact and one static contact are closed or opened correspondingly; wherein, along the X direction, the plurality of moving contacts and the plurality of static contacts are evenly arranged on both sides of the retaining wall with the retaining wall as the axis of symmetry.

[0005] In some embodiments, along the Z direction, the retaining wall includes a first section and a second section, along the X direction, the width of the first section is smaller than the width of the second section, and the first section is used for being inserted into the plug-in slot.

[0006] In some embodiments, along the Z direction, the height of the first section is smaller than the height of the second section.

[0007] In some embodiments, the height of the first section is 1 / 4 - 1 / 3 of the height of the second section.

[0008] In some embodiments, the width of the retaining wall in the X direction ranges from 0.3 mm to 0.6 mm.

[0009] In some embodiments, the retaining wall and the inner wall of the insertion slot are in clearance fit.

[0010] In some embodiments, a baffle is provided on the base, the baffle is provided at the end of the insertion slot, and is located laterally of the baffle in the X direction.

[0011] In some embodiments, baffles are provided on both sides of the retaining wall in the X direction.

[0012] In some embodiments, the contact portion further includes a moving spring piece for mounting the moving contact, a groove is provided on the base, the moving spring piece is mounted on the groove wall, and in the Y direction, the width of the groove ranges from 2.0 mm to 3.0 mm.

[0013] In some embodiments, reinforcing ribs are provided on the groove wall of the groove, and the reinforcing ribs and the moving spring piece are arranged oppositely.

[0014] In summary, the relay with a retaining wall provided by the present utility model has the following technical effects:

[0015] By providing a retaining wall on the inner wall of the housing and correspondingly providing an insertion slot on the base, when the relay is installed, the retaining wall is inserted into the insertion slot, and a plurality of moving contacts and a plurality of static contacts can be separated on both sides of the retaining wall, so that an independent space is formed between each closed moving contact and static contact. When the moving contact and the static contact are closed or disconnected to generate splashes, the flow space of the splashes is reduced, and it is easier to settle, reducing the possibility of the splashes forming a circuit and improving the withstand voltage ability between the moving contact and the static contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a relay with a retaining wall according to an embodiment of the present utility model;

[0017] Figure 2 is Figure 1 a top view of the relay with a retaining wall in

[0018] Figure 3 is Figure 2 a schematic cross-sectional view taken along the A-A direction in

[0019] Figure 4 is Figure 1 an exploded view of the relay with a retaining wall in

[0020] Figure 5 is Figure 1Schematic diagram of the structure of the outer shell in

[0021] Figure 6 is Figure 1 Schematic diagram of a perspective view after hiding the outer shell of the relay with a retaining wall in

[0022] Figure 7 is Figure 1 Schematic diagram of another perspective view after hiding the outer shell of the relay with a retaining wall in

[0023] Accompanying drawings: 100 - Relay with a retaining wall, 10 - Base, 11 - Insertion slot, 12 - Receiving frame, 121 - Side wall, 13 - Baffle, 14 - Groove, 141 - Groove wall, 142 - Reinforcing rib, 20 - Outer shell, 21 - Retaining wall, 211 - First section, 212 - Second section, 30 - Magnetic circuit driving part, 31 - Skeleton, 32 - Coil, 33 - Iron core, 34 - Yoke, 35 - Armature, 36 - Push rod, 40 - Contact part, 41 - Moving contact, 42 - Static contact, 43 - Moving reed, 44 - Static reed. Detailed implementation manners

[0024] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is 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 should not be construed as a limitation to the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

[0027] The present invention will be further described in detail below with reference to the accompanying drawings.

[0028] Please refer to Figures 1 to 7 , a relay 100 with a retaining wall provided by an embodiment of the present invention, including a base 10, an outer shell 20, a magnetic circuit driving part 30, and a contact part 40.

[0029] Among them, please refer to Figures 1 to 4, a socket groove 11 is provided on the base 10; the outer shell 20 covers the outside of the base 10, a retaining wall 21 is provided on the inner wall of the outer shell 20, and the retaining wall 21 is inserted into the socket groove 11; the magnetic circuit driving part 30 is installed on the base 10 and is used for generating electromagnetic force; the contact part 40 includes a plurality of moving contacts 41 and a plurality of static contacts 42, one moving contact 41 and one static contact 42 are correspondingly closed or disconnected, wherein, along the X direction, the plurality of moving contacts 41 and the plurality of static contacts 41 are evenly arranged on both sides of the retaining wall 21 with the retaining wall 21 as the axis of symmetry.

[0030] For the relay 100 with the retaining wall mentioned above, by providing the retaining wall 21 on the inner wall of the outer shell 20 and correspondingly providing the socket groove 11 on the base 10, when the relay is installed, the retaining wall 21 is inserted into the socket groove 11, and the plurality of moving contacts 412 and the plurality of static contacts 422 can be separated on both sides of the retaining wall 21, so that an independent space is formed between each closed moving contact 412 and static contact 422. When the moving contact 412 and the static contact 422 are closed or disconnected to generate splashes, the flowing space of the splashes is reduced, and it is easier to settle, reducing the possibility of the splashes forming a loop and improving the withstand voltage ability between the moving contact 412 and the static contact 422.

[0031] Among them, the relay in this embodiment includes a set of normally open static contact groups and a set of normally closed static contact groups. The set of normally open static contact groups and the set of normally closed static contact groups both include two static contacts 42. The two static contacts 42 in each static contact group are arranged on both sides of the retaining wall 21 with the retaining wall 21 as the axis of symmetry; the relay includes two sets of moving contact groups. Each moving contact group includes two moving contacts 41. The two moving contacts 41 in each set of moving contact groups are arranged on both sides of the retaining wall 21 with the retaining wall 21 as the axis of symmetry, and one moving contact 41 corresponds to and is closed or disconnected from one static contact 42.

[0032] It can be understood that the contact part in this embodiment further includes a moving reed 43 and a static reed 44. Specifically, it includes two moving reeds 43 and four static reeds 44. One moving contact 41 is provided on each of the opposite side surfaces of each moving reed 43, and one static contact 42 is provided on each static reed 44. Thus, the installation of 4 moving contacts 41 and four static contacts 42 is realized.

[0033] Among them, in this embodiment, a push-rod type relay is taken as an example for illustration. The magnetic circuit driving part 30 includes a bobbin 31, a coil 32, an iron core 33, a yoke 34, an armature 35 and a push rod 36. The coil 32 is wound outside the bobbin 31, the iron core 33 is inserted into the bobbin 31, the armature 35 is swingably arranged relative to the yoke 34 and is used for installing the push rod 36 so as to be attracted or disconnected from the iron core 33, thereby driving the closing or opening between the moving contact 41 and the static contact 42 on the moving reed 43 installed on the push rod 36. When the terminals of the coil 32 are energized, under the action of the magnetic attraction force generated between the armature 35 and the iron core 33, the armature 35 rotates and contacts the iron core 33, and the moving contact 41 is closed with the normally open static contact 42, or the moving contact 41 is disconnected from the normally closed static contact 42.

[0034] Among them, please refer to Figure 5 , when the retaining wall 21 of this embodiment is set, in order to be adapted to the space where the insertion slot 11 is arranged on the base 10, along the Z direction, the retaining wall 21 includes a first section 211 and a second section 212. Along the X direction, the width of the first section 211 is smaller than the width of the second section 212. The first section 211 is used for being inserted into the insertion slot 11. In this way, by setting the first section 211 with a smaller width, it can be adapted to the space size where the insertion slot 11 can be arranged on the base 10. At the same time, by setting the second section 212 with a larger width, the structural strength of the retaining wall 21 is ensured.

[0035] Furthermore, in order to be adapted to the height dimension where the insertion slot 11 can be arranged on the base 10, along the Z direction, the height of the first section 211 is smaller than the height of the second section 212, so that the first section 211 can be just inserted into the insertion slot 11. At the same time, by setting the second section 212 with a higher height, since the height of the second section 212 is longer, the structural strength of the retaining wall 21 is further ensured.

[0036] Even further, the height of the first section 211 is 1 / 4 - 1 / 3 of the height of the second section 212. For example, the height of the first section 211 can be 1 / 4 of the height of the second section 212, or can be 1 / 3 of the second section 212, to ensure the structural strength of the retaining wall 21.

[0037] It can be understood that the height of the first section 211 can be higher than the opening height of the insertion slot 11, or just equal to the opening height of the insertion slot 11. Specifically, the height of the first section 211 in this embodiment is just equal to the opening height of the insertion slot 11.

[0038] Among them, since the retaining wall 21 needs to be inserted into the insertion slot 11, and at the same time, due to the relatively thin thickness of the retaining wall 21, in order to avoid the fracture or deformation of the retaining wall 21 when the outer shell 20 is covered on the base 10, the retaining wall 21 and the inner wall of the insertion slot 11 are in clearance fit, avoiding the situation that the retaining wall 21 is deformed or fractured due to friction between the retaining wall 21 and the inner wall of the insertion slot 11 when the outer shell 20 is covered on the base 10.

[0039] Among them, the width range of the retaining wall 21 in the X direction is 0.3 mm - 0.6 mm, so as to be adapted to the size of the insertion slot 11 that can be opened on the base 10. For example, when the width of the first section 211 is set to 0.3 mm, the width of the second section 212 can be set to 0.4 mm; when the width of the first section 211 is set to 0.4 mm, the width of the second section 212 can be set to 0.5 mm.

[0040] Please refer to Figure 6 , in an embodiment of the present utility model, a receiving frame 12 is provided on the base 10. The receiving frame 12 is used to receive the skeleton 31, the coil 32, the iron core 33, and the yoke 34. The push rod 36 is slidably arranged on the top of the receiving frame 12. Since it is necessary to avoid the fracture or deformation of the retaining wall 21 when it is inserted into the insertion slot 11, the retaining wall 21 and the inner wall of the insertion slot 11 and the side wall 121 of the receiving frame 12 are in clearance fit. However, due to the gap between the retaining wall 21 and the side wall 121 of the receiving frame 12, when the moving contact 41 and the static contact 42 are disconnected, an arc will be generated. In order to increase the creepage distance, a baffle 13 is provided on the base 10. The baffle 13 is arranged at the end of the insertion slot 11 and is arranged on the side of the baffle 13 in the X direction, that is, the baffle 13 is provided on the side wall 121 of the receiving frame 12. Through the setting of the baffle 13, when the moving contact 41 and the static contact 42 are disconnected and an arc is generated, the arc will travel along the wall surface of the baffle 13, increasing the creepage distance of the arc, thereby achieving the effect of arc extinguishing and increasing the use safety of the relay.

[0041] Furthermore, in order to improve the use safety of the relay, baffles 13 are provided on both sides of the retaining wall 21 in the X direction. Thus, through the setting of the two baffles 13, the creepage distance of the arc is further increased, and the use safety of the relay is further increased.

[0042] Among them, please refer to Figure 7, a groove 14 for installing the moving reed 43 is provided on the base 10. The moving reed 43 is installed on one groove wall 141 of the groove 14. The thickness range of the moving reed 43 is approximately set to 0.5 mm. In the prior art, along the Y direction, the width range of the groove 14 is approximately set to 0.7 mm, which is slightly wider than the moving reed 43. In this application, in order to improve the withstand voltage ability between the contacts, in this embodiment, along the Y direction, the width range of the groove 14 is 2.0 - 3.0 mm, that is, along the Y direction, the width of the groove 14 is much larger than the thickness of the moving reed 43. By setting a wider groove 14, the sedimentation space for the splashes is increased. When splashes are generated between the contacts, more splashes can be deposited into the groove 14, effectively increasing the sedimentation amount of the splashes, reducing the circulation of the splashes inside, improving the withstand voltage ability of the product, and enhancing the stability of the high life of the contacts.

[0043] Furthermore, since it is necessary to form a groove 14 on the base 10, in order to ensure the structural strength of the groove wall 141 of the groove 14, reinforcing ribs 142 are provided on the groove wall 141 of the groove 14. The reinforcing ribs 142 extend in the Z direction and are arranged opposite to the moving reed 43. Thus, through the arrangement of the reinforcing ribs 142, the structural strength of the groove wall 141 of the groove 14 is ensured, so as to ensure the structural strength of the base 10.

[0044] For the above relay 100 with a retaining wall, by providing a retaining wall 21 inside the housing 20, it can block the splashes between the paired contacts, separating the circulation of the splashes between the contacts; reducing the activity space of the splashes, effectively increasing the withstand voltage between the two sets of contacts, and improving the electrical life of the product; by widening the width of the groove 14 for installing the moving reed 43 on the base 10 along the Y direction, the sedimentation space for the splashes can be increased, reducing the circulation of the splashes inside, and further improving the withstand voltage ability of the product.

[0045] The technical means disclosed in the solution of the present utility model are not limited to the technical means disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present utility model.

Claims

1. A relay (100) having a retaining wall, characterized in that, Comprising: A base (10) provided with a socket (11) thereon; A housing (20) covering the outside of the base (10), with a retaining wall (21) provided on the inner wall of the housing (20), and the retaining wall (21) being inserted into the socket (11); A magnetic circuit driving part (30) installed on the base (10) for generating electromagnetic force; A contact part (40) including a plurality of moving contacts (41) and a plurality of static contacts (42), with one of the moving contacts (41) and one of the static contacts (42) closing or disconnecting in one-to-one correspondence; Wherein, along the X direction, the plurality of moving contacts (41) and the plurality of static contacts (42) are evenly arranged on both sides of the retaining wall (21) with the retaining wall (21) as the axis of symmetry.

2. The relay (100) with a retaining wall according to claim 1, characterized in that, Along the Z direction, the retaining wall (21) includes a first section (211) and a second section (212). Along the X direction, the width of the first section (211) is smaller than the width of the second section (212), and the first section (211) is used for being inserted into the socket (11).

3. The relay (100) with a retaining wall according to claim 2, characterized in that, Along the Z direction, the height of the first section (211) is smaller than the height of the second section (212).

4. The relay (100) with a retaining wall according to claim 3, characterized in that, The height of the first section (211) is 1 / 4 - 1 / 3 of the height of the second section (212).

5. The relay (100) with a retaining wall according to any one of claims 1-4, characterized in that, The width of the retaining wall (21) along the X direction ranges from 0.3 mm to 0.6 mm.

6. The relay (100) with a retaining wall according to any one of claims 1-4, characterized in that, The retaining wall (21) and the inner wall of the socket (11) are in clearance fit.

7. The relay (100) with a retaining wall according to any one of claims 1-4, characterized in that, A baffle (13) is provided on the base (10), the baffle (13) is arranged at the end of the socket (11), and along the X direction, it is arranged on the side of the baffle (13).

8. The relay (100) with a retaining wall according to claim 7, characterized in that, Along the X direction, the baffle (13) is provided on both sides of the retaining wall (21).

9. The relay (100) with a retaining wall according to any one of claims 1-4, characterized in that, The contact part (40) further includes a moving reed (43) for installing the moving contact (41). A groove (14) is provided on the base (10), and the moving reed (43) is installed on the groove wall (141) of the groove (14). Along the Y direction, the width of the groove (14) ranges from 2.0 mm to 3.0 mm.

10. The relay (100) with a retaining wall according to claim 9, characterized in that, Reinforcing ribs (142) are provided on the groove wall (141) of the groove (14), and the reinforcing ribs (142) are arranged opposite to the moving reed (43).

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