A relay

Abstract

The utility model discloses a relay, include: casing, magnetic drive part is located in the casing, including skeleton, coil, yoke and armature, contact part is located in the casing, including the dynamic contact group and static contact group who can be opened or attracted each other along X direction, push part is used to install dynamic contact group, can move along X direction under the drive of magnetic drive part, guide portion is located in the casing, including a plurality of guide structure, at least two guide structures are established on the one side of push part along Y direction, and at least 1 guide structure is established on the other side of push part, wherein, guide structure and push part are rolling contact, the relay in the utility model, through setting the mode of limiting push part by at least three guide structures, avoids the phenomenon that push part is offset.

Description

Technical Field

[0001] This utility model belongs to the field of relay technology, and specifically relates to a relay. Background Technology

[0002] A relay is an automatic switching element that uses electromagnetic force to drive mechanical parts. It generally includes a magnetic circuit, a driving part, a moving contact group, and a stationary contact group.

[0003] The magnetic circuit includes a coil winding, a yoke, an armature, and an iron core. The iron core is placed inside the coil winding. Two yokes are fixed to both ends of the iron core, and the ends of the two yokes away from the iron core form two magnetic drive ends. The separation or attraction of the corresponding ends of the two armatures and the two yokes drives the pushing part to make linear motion, thereby realizing the closing or opening between the moving contact group installed on the pushing part and the stationary contact group installed on the housing.

[0004] In related technologies, a guide member is provided on the housing to guide the linear motion of the pushing part. However, only one guide member is provided on each side perpendicular to the direction of motion of the pushing part. Due to processing errors, assembly gaps, and deformation under force, the guiding system composed of the two guide members is unstable and is prone to jamming or slight shaking, which affects the accuracy of the connection and disconnection between the moving contact and the stationary contact. Utility Model Content

[0005] The purpose of this invention is to disclose a relay that solves the problem that the driving part of the relay in the prior art may deviate during the movement process.

[0006] To achieve the above objectives, this utility model discloses a relay, comprising: case; The magnetic drive section, located within the housing, includes a frame, a coil, a yoke, and an armature. The contact portion, located within the housing, includes a group of moving contacts and a group of stationary contacts that can be disconnected or attracted to each other along the X direction. The pushing part is used to mount the moving contact group and can move along the X direction under the drive of the magnetic driving part; The guide portion, located within the housing, includes multiple guide structures. At least two of the guide structures are provided on one side of the push portion along the Y direction, and at least one of the guide structures is provided on the other side of the push portion. The guide structure has an arcuate surface, and the arcuate surface and the push portion are in sliding fit.

[0007] As an optional implementation, the guide structure includes a mounting block and a column that is rolled on the mounting block, the column extending in the Z direction and slidingly engaging with the pushing part.

[0008] As an optional implementation, the mounting block is provided with a mounting groove, the mounting groove having an opening on the side facing the pusher, the column being mounted in the opening, and a portion of the column being exposed from the opening.

[0009] As an alternative implementation, the diameter of the column is larger than the size of the opening.

[0010] As an optional implementation, the mounting block includes a connecting portion and at least one first reinforcing rib connected to the connecting portion, wherein the connecting portion mounts the column.

[0011] As an optional implementation, the column is a metal component.

[0012] As an optional implementation, the guide structure is an integral structure and is integrally formed with the housing.

[0013] As an optional implementation, the pushing part includes a pushing part and a mounting part arranged perpendicularly to each other, the pushing part is provided with the guide structure on its side, and the mounting part is used to mount the moving contact group; The relay also includes a reinforcing plate, which is connected between the pushing part and the mounting part, and is disposed on one side of the pushing part and the mounting part along the Z direction.

[0014] As an optional implementation, the pushing part is provided with a protrusion, the reinforcing plate is provided with a groove, and the locking structure is inserted into the groove.

[0015] As an optional implementation, the protrusion includes a positioning post and a second reinforcing rib connected together, wherein the height of the second reinforcing rib along the Z direction is less than the height of the positioning post along the Z direction and less than the height of the groove along the Z direction.

[0016] Compared with the prior art, the beneficial effects of the relay of this utility model are as follows: The relay of this invention has at least two guide structures on one side and at least one guide structure on the other side of the pushing part along the Y direction, that is, at least three guide structures on both sides of the pushing part. Thus, the pushing part has at least three guide points. Since at least three points define a plane, the excessive rotational freedom of the pushing part can be reliably restricted, thereby limiting the pushing part to make stable linear motion along the X direction and avoiding deviation. At the same time, by providing an arc-shaped surface for the guide structure, and the arc-shaped surface slidingly engaging with the pushing part, the contact area between the guide structure and the pushing part is reduced, resulting in less friction between the guide structure and the pushing part, improving the smoothness of the linear motion of the pushing part along the X direction, that is, improving the sensitivity of closing and opening between the moving contact group and the stationary contact group. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the relay of this utility model; Figure 2 yes Figure 1 A structural diagram of the relay hidden under the cover, taken from one perspective. Figure 3 yes Figure 2 An exploded view of the relay with its cover concealed. Figure 4 yes Figure 2 A structural diagram of the relay hidden under the cover from another perspective; Figure 5 yes Figure 4 Enlarged view of point I in the middle; Figure 6 yes Figure 2 A schematic diagram of the bottom shell structure; Figure 7 yes Figure 6 Enlarged schematic diagram at point II; Figure 8 yes Figure 3 A schematic diagram of the structure of the pushing part and the reinforcing plate in the middle; Figure 9 yes Figure 8 Enlarged schematic diagram at point III; Figure 10 yes Figure 8 An exploded view of the propulsion section and the reinforcing plate.

[0019] Explanation of key figure labels: 100-Relay, 10-Housing, 11-Bottom Case, 12-Top Cover, 13-Mounting Space, 20-Magnetic Drive Part, 21-Frame, 22-Coil, 23-Yoke, 24-Armature, 25-Core, 30-Contact Part, 31-Moving Contact Group, 32-Stationary Contact Group, 321-Load Terminal, 40-Pushing Part, 41-Pushing Section, 42-Mounting Section, 43-Protrusion, 431-Positioning Post, 432-Second Reinforcing Rib, 50-Guide Part, 51-Guide Structure, 511-Mounting Block, 5111-Opening, 5112-Connecting Part, 5113-First Reinforcing Rib, 5114-Mounting Slot, 512-Column, 513-Arc Surface, 60-Reinforcing Plate, 61-Groove, 70-Guide Rod, 80-Energy Storage Spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0022] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0023] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0024] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0025] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0026] Please see Figures 1 to 10 This application provides a relay 100, including a housing 10, a magnetic drive portion 20, a contact portion 30, a push portion 40, and a guide portion 50.

[0027] Please refer to Figures 1 to 5 The housing 10 forms the mounting space 13. The magnetic drive part 20 is located within the mounting space 13 of the housing 10 and includes a frame 21, a coil 22, a yoke 23, and an armature 24. The contact part 30 is located within the mounting space 13 of the housing 10 and includes a moving contact group 31 and a stationary contact group 32 that can be disconnected or attracted to each other along the X direction. The push part 40 is used to mount the moving contact group 31 and can move along the X direction under the drive of the magnetic drive part 20. The guide part 50 is located within the housing 10 and includes multiple guide structures 51. At least two guide structures 51 are provided on one side of the push part 40 along the Y direction, and at least one guide structure 51 is provided on the other side of the push part 40. The guide structure 51 has an arcuate surface 513, and the arcuate surface 513 and the push part 40 are in sliding fit.

[0028] The aforementioned relay 100 has at least two guide structures 51 on one side and at least one guide structure 51 on the other side of the push part 40 along the Y direction. That is, at least three guide structures 51 are provided on both sides of the push part 40. Thus, the push part 40 has at least three guide points. Since at least three points define a plane, the excessive rotational freedom of the push part 40 can be reliably restricted, thereby limiting the push part 40 to make stable linear motion along the X direction and avoiding deviation. At the same time, by providing an arc-shaped surface 513 on the guide structure 51, the arc-shaped surface 513 and the push part 40 slide in contact, reducing the contact area between the guide structure 51 and the push part 40, so that the friction between the guide structure 51 and the push part 40 is smaller, improving the smoothness of the linear motion of the push part 40 along the X direction, that is, improving the sensitivity of closing and opening between the moving contact group 31 and the stationary contact group 32.

[0029] In this embodiment, the pushing part 40 can be equipped with multiple moving contact groups 31. Therefore, the pushing part 40 can include a pushing part 41 and a mounting part 42 arranged perpendicularly. The pushing part 41 is connected to the armature 24, and the mounting part 42 is equipped with the moving contact groups 31. The mounting part 42 extends along the Y direction, and the pushing part 41 extends along the X direction.

[0030] Please refer to Figures 1 to 3 The housing 10 of this embodiment includes a detachably connected bottom shell 11 and a top cover 12. The bottom shell 11 is equipped with a magnetic drive part 20, a contact part 30 and a push part 40. The top cover 12 is disposed along the Z direction at the opening of the bottom shell 11 to seal the installation space 13 inside the bottom shell 11.

[0031] Please refer to Figure 3 The magnetic drive section 20 includes a frame 21, a coil 22 wound around the frame 21, an iron core 25 inserted into the frame 21, and two yokes 23 disposed at opposite ends of the iron core 25. Each yoke 23 is fixed to the iron core 25 and protrudes relative to the coil 22 to have a drive end. A permanent magnet is connected between two armatures 24. Each armature 24 is U-shaped, and one armature 24 surrounds the other armature 24. When the coil 22 is energized and de-energized, the two armatures 24 and the two yokes 23 alternately open or close, realizing the opening or closing of the moving contact group 31 and the stationary contact group 32.

[0032] Please refer to Figures 4 to 7 Since the bottom shell 11 of this embodiment is equipped with the magnetic drive part 20, the contact part 30 and the push part 40, when the guide part 50 is provided, the guide part 50 is provided on the bottom shell 11, so that the setting position of the guide part 50 can be determined according to the installation position of the push part 41; in other embodiments, the guide part 50 can also be provided on the top cover 12 and extend toward the bottom shell 11, which can also achieve the limiting effect of the push part 40.

[0033] In one embodiment, the arc surface 513 can be a surface with varying curvature or a surface with uniform curvature. That is, when the curvature of the arc surface 513 varies uniformly, the arc surface 153 is part of a cylinder, so that the guide structure 51 and the pushing part 40 are in line-surface contact, with a small contact area between them, reducing the magnitude of the friction between them.

[0034] Specifically, please refer to Figure 5 and Figure 7In this embodiment, the guide structure 51 includes a mounting block 511 and a column 512 disposed on the mounting block 511. The column 512 and the pushing part 41 are in line-surface contact. Thus, compared to the method of only setting a single column 512 connected to the bottom shell 11, the mounting block 511 can also achieve positioning and reinforcement functions, ensuring the stability of the entire guide structure 51 in limiting the movement of the pushing part 41. At the same time, the guide structure 51 is configured to include two structures, which can respectively set the materials of the mounting block 511 and the column 512.

[0035] Further, please refer to Figure 7 In this embodiment, the mounting block 511 has a mounting groove 5114 on the side facing the pushing part 41, and the mounting groove 5114 has an opening 5111 on the side facing the pushing part 40. The column 512 is installed in the mounting groove 5114, and part of the column 512 is exposed from the opening 5111. That is, the curvature of the groove wall of the mounting groove 5114 and the curvature of the column 512 are matched and have the same curvature, which makes it easy for the column 512 to be inserted into the mounting groove 5114 along the Z direction. At the same time, by directly providing the mounting groove 5114 on the mounting block 511 to install the column 512, the structure of the entire guide structure 51 is simple and easy to install.

[0036] Specifically, in this embodiment, the column 512 is columnar and extends in the Z direction, so that the column 512 has a certain length and makes line contact with the side of the pushing part 41 along the Z direction, while also enabling the column 512 to have a certain structural strength.

[0037] Furthermore, in this embodiment, the diameter of the column 512 is larger than the size of the opening 5111, that is, the diameter of the column 512 is located within the mounting groove 5114, so that after the main body 512 is inserted into the mounting groove 5114 along the Z direction, it will not fall out of the opening 5111 along the Y direction.

[0038] Further, please refer to Figure 7 To ensure the structural strength of the mounting block 511, the mounting block 511 includes a connecting portion 5112 and at least one first reinforcing rib 5113 connected to the connecting portion 5112. The connecting portion 5112 is used to mount the column 512 and is connected to the bottom shell 11. Thus, the structural strength of the entire mounting block 511 is increased by the arrangement of the first reinforcing rib 5113. For example, one first reinforcing rib 5113, two first reinforcing ribs 5113, or more first reinforcing ribs 5113 can be provided, and there is no limitation here.

[0039] The mounting block 511 can be integrally injection molded with the bottom shell 11, thereby avoiding the need for subsequent reconnection of the two and improving the assembly efficiency of the entire relay 100.

[0040] Specifically, in this embodiment, when setting the guide structure 51, two guide structures 51 are provided on one side of the pushing part 41 and one guide structure 51 is provided on the other side. By setting the three guide structures 51, not only is a more accurate positioning effect achieved, but the installation space 13 inside the bottom shell 11 is also reasonably utilized, which also facilitates the molding of the bottom shell 11.

[0041] Furthermore, since the pushing part 40 is a plastic part, the column 512 in this embodiment is set as a metal part, which not only ensures the structural strength of the column 512, but also reduces the sliding friction between the metal and the plastic part, making it easier for the pushing part 40 to slide in the X direction.

[0042] In another embodiment, the guide structure 51 can be configured as an integral structure and integrally formed with the housing 10, thereby simplifying the assembly process between the entire housing 10 and the guide structure 51 and improving installation efficiency.

[0043] Please see Figures 8 to 10 In one embodiment of this utility model, since the pushing part 40 is a plastic part and the mounting part 42 has a certain length along the Y direction, the mounting part 42 may deform or warp during long-term use. In order to ensure the structural strength of the entire pushing part 40, the relay 100 also includes a reinforcing plate 60. The reinforcing plate 60 is connected between the pushing part 41 and the mounting part 42 and is provided on one side of the pushing part 41 and the mounting part 42 along the Z direction. Specifically, it is provided on the side of the pushing part 41 and the mounting part 42 facing the upper cover 12. For example, a metal reinforcing plate 60 can be provided, which has a certain hardness to limit the deformation of the pushing part 41 and the mounting part 42. At the same time, since the reinforcing plate 60 is connected between the pushing part 41 and the mounting part 42, the connection strength between the connection point of the mounting part 42 and the pushing part 41 is guaranteed.

[0044] Specifically, the reinforcing plate 60 extends gradually from the length of the mounting portion 42 to the pushing portion 41, so that the reinforcing plate 60 extends along the surfaces of the mounting portion 42 and the pushing portion 41, thus avoiding occupying other mounting space on the bottom shell 11 when it is tilted and connected to the mounting portion 42 and the pushing portion 41.

[0045] Please see Figures 8 to 10 When installing the reinforcing plate 60, both the pushing part 41 and the mounting part 42 are provided with protrusions 43, and the reinforcing plate 60 is provided with a groove 61. The protrusions 43 are inserted into the grooves 61. That is, after the pushing part 40 and the armature 24 are formed, the reinforcing plate 60 is then installed on the pushing part 40. By providing the protrusions 43, the reinforcing plate 60 can be detachably installed. In this case, the reinforcing plate 60 and the pushing part 40 are two independent structures. In other embodiments, the reinforcing plate 60 and the pushing part 40 can also be integrally injection molded.

[0046] Specifically, the protrusion 43 in this embodiment includes a positioning post 431 and a second reinforcing rib 432 connected together. The height of the second reinforcing rib 432 along the Z direction is less than the height of the positioning post 431 along the Z direction and less than the height of the groove 61 along the Z direction. Thus, the positioning post 431 achieves the positioning and installation function of the reinforcing plate 60. The connection between the second reinforcing rib 432 and the positioning post 431 achieves the effect of stronger overall protrusion 43. At the same time, since the height of the second reinforcing rib 432 along the Z direction is less than the height of the positioning post 431 along the Z direction and less than the height of the groove 61 along the Z direction, glue can be applied in the groove 61 to achieve a fixed connection between the reinforcing plate 60 and the pushing part 40. Due to the setting of the second reinforcing rib 432, it extends into the groove 61 along the bottom of the groove 61, avoiding the glue from overflowing from the bottom of the groove 61.

[0047] In this embodiment, when the mounting part 42 installs the moving contact group 31, it can be done by mounting the moving contact group 31 on a snap-fit ​​member. The mounting part 42 is provided with a snap-fit ​​groove, and the snap-fit ​​member is provided with a snap-fit ​​groove, so that the moving contact group 31 can be installed on the pushing part 40 through the snap-fit ​​member.

[0048] Please refer to Figure 3 and Figure 4 Since multiple moving contact groups 31 are installed on the mounting part 42 of the pushing part 40, the mounting part 42 has a certain extension length in the Y direction. In order to further ensure the stability when the moving contact group 31 moves in the X direction, guide rods 70 are provided at both ends of the mounting part 42 in the Y direction. The guide rods 70 are used to guide the movement of the mounting part 42 in the X direction. An energy storage spring 80 is also provided in the bottom shell 11. The energy storage spring 80 abuts against the side of the mounting part 42 away from the moving contact group 31. The moving contact group 31 is compressed when it moves away from the stationary contact group 32, and undergoes elastic deformation to store energy. It can also recover its deformation and release energy when the moving contact group 31 moves towards the stationary contact group 32.

[0049] Specifically, the mounting part 42 is provided with a through hole for the guide rod 70 to pass through.

[0050] In this embodiment, the pushing part 40 is provided with three moving contact groups 31 and three stationary contact groups 32. In other embodiments, one, two, or other numbers of moving contact groups 31 may be provided as needed. The stationary contact group 32 has a load terminal 321 extending outside the housing 10.

[0051] The aforementioned relay 100, by setting the guide structure 51 that guides the push part 40 to include a mounting block 511 and a column 512, allows for sliding friction between the push part 40 and the column 512, resulting in a smaller contact area and lower friction between the push part 40 and the main body 512, thus improving the smoothness of the push part 40's movement in the X direction. Simultaneously, at least two guide structures 51 are provided on one side of the push part 40, and at least one guide structure 51 is provided on the other side, i.e., at least three guide structures 51 are provided, limiting the degree of freedom of the push part 40 in the X direction and preventing deviation, thereby improving the synchronicity of the closing or opening of the moving contact group 31 and the stationary contact group 32. Furthermore, by providing a reinforcing plate 60, the structural strength of the entire push part 40 is increased, preventing deformation of the push part 40 after long-term use.

[0052] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A relay, characterized in that, include: case; The magnetic drive section, located within the housing, includes a frame, a coil, a yoke, and an armature. The contact portion, located within the housing, includes a group of moving contacts and a group of stationary contacts that can be disconnected or attracted to each other along the X direction. The pushing part is used to mount the moving contact group and can move along the X direction under the drive of the magnetic driving part; The guide portion, located within the housing, includes multiple guide structures. At least two of the guide structures are provided on one side of the push portion along the Y direction, and at least one of the guide structures is provided on the other side of the push portion. The guide structure has an arc-shaped surface, and the arc-shaped surface and the push portion are in sliding fit.

2. The relay according to claim 1, characterized in that, The guide structure includes a mounting block and a column disposed on the mounting block. The column extends along the Z direction and slides in cooperation with the pushing part.

3. The relay according to claim 2, characterized in that, The mounting block is provided with a mounting groove, and the mounting groove has an opening on the side facing the pushing part. The column is mounted in the opening, and part of the column is exposed from the opening.

4. The relay according to claim 3, characterized in that, The diameter of the column is larger than the size of the opening.

5. The relay according to any one of claims 2-4, characterized in that, The mounting block includes a connecting portion and at least one first reinforcing rib connected to the connecting portion, wherein the connecting portion mounts the column.

6. The relay according to any one of claims 2-4, characterized in that, The column is a metal component.

7. The relay according to claim 1, characterized in that, The guide structure is an integral structure and is integrally formed with the shell.

8. The relay according to any one of claims 1-3, characterized in that, The pushing part includes a pushing part and a mounting part arranged perpendicularly to each other. The pushing part is provided with the guide structure on its side, and the mounting part is used to mount the moving contact group. The relay also includes a reinforcing plate, which is connected between the pushing part and the mounting part, and is disposed on one side of the pushing part and the mounting part along the Z direction.

9. The relay according to claim 8, characterized in that, The pushing part has a protrusion, and the reinforcing plate has a groove, with the protrusion inserted into the groove.

10. The relay according to claim 9, characterized in that, The protrusion includes a positioning post and a second reinforcing rib connected together. The height of the second reinforcing rib along the Z direction is less than the height of the positioning post along the Z direction and less than the height of the groove along the Z direction.

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