Contactor

Abstract

The utility model provides a contactor, and relates to the technical field of electrical equipment. The contactor provided by the utility model comprises a base, a coil framework and a first iron core. An air gap is formed in one side of the first iron core, an installation cavity is formed in the base, the first iron core is arranged on the coil framework in a sleeving mode, and in the first direction, the projection of the first iron core provided with the air gap partially coincides with the projection of the coil framework. The installation cavity is further provided with a cavity wall intersecting with the first direction, a first clamping structure is arranged on the cavity wall, a second clamping structure is arranged on the coil framework, and the first clamping structure is connected with the second clamping structure in a clamped mode. Wherein the first direction is the direction from the cavity opening of the mounting cavity to the cavity bottom of the mounting cavity. Therefore, the arrangement of the first clamping structure and the second clamping structure and the possibility of interference of clamping on the first iron core can be reduced, and the installation of the coil framework in the base is more reasonable.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and more particularly to a contactor. Background Technology

[0002] A contactor is a switching device that connects or disconnects the main circuit. It controls the opening and closing of contacts by controlling the opening and closing state of the coil current, thereby realizing the connection and disconnection of the main circuit.

[0003] The electromagnetic system is a crucial component of a contactor, comprising elements such as the iron core, coil, and coil frame. The iron core consists of a stationary core and a moving core. Specifically, the coil is wound around the coil frame, the stationary core is fitted into the coil frame and fixed within the contactor via the coil frame, and the moving core slides relative to the stationary core. When the coil is energized or de-energized, the moving core can perform different actions to close or open the contactor's contacts.

[0004] However, the coil frame configuration in the relevant technology is not reasonable enough and may interfere with the installation of the stationary iron core. Utility Model Content

[0005] This application provides a contactor that allows for a more reasonable arrangement of the coil frame, reducing the possibility of interference between the coil frame arrangement and the installation of the iron core.

[0006] In a first aspect, this application provides a contactor, including a base, a coil frame, and a first iron core. One side of the first iron core has an air gap, and the base has a mounting cavity. The first iron core is sleeved on the coil frame, and in a first direction, the projection of a portion of the first iron core with the air gap coincides with the projection of the coil frame. The mounting cavity also has a cavity wall intersecting the first direction, and a first snap-fit ​​structure is provided on the cavity wall. A second snap-fit ​​structure is provided on the coil frame, and the first snap-fit ​​structure and the second snap-fit ​​structure snap together. The first direction is the direction from the opening of the mounting cavity to the bottom of the mounting cavity.

[0007] In this embodiment, the cavity wall of the mounting cavity, which has a first snap-fit ​​structure, intersects with the first direction, and the second snap-fit ​​structure snaps into the first snap-fit ​​structure. Therefore, the positions of both the first and second snap-fit ​​structures are offset from the surface of the coil frame in the first direction. This reduces the possibility of interference between the first and second snap-fit ​​structures and the snap-fit ​​structure on the first iron core, making the installation of the coil frame in the base more reasonable.

[0008] Optionally, the contactor also has a second direction, with the first iron core sleeved on the coil frame along the second direction. In the second direction, the coil frame has opposing first and second sides, with the first and / or second sides of the coil frame provided with a second snap-fit ​​structure.

[0009] Thus, the second snap-fit ​​structure can be specifically set on the upper surface of the coil frame in the second direction. In this way, the snap-fit ​​direction between the second and first snap-fit ​​structures is parallel to the installation direction of the first core. During the installation of the first core, interference between the first core and the second snap-fit ​​structure can be reduced, potentially preventing the first core from passing over the second snap-fit ​​structure and being properly inserted into the coil frame.

[0010] Optionally, the first snap-fit ​​structure is one of a snap-fit ​​boss and a snap-fit ​​hole, and the second snap-fit ​​structure is the other of a snap-fit ​​boss and a snap-fit ​​hole. The snap-fit ​​boss is embedded in the snap-fit ​​hole.

[0011] This configuration allows for different setup methods for both the first and second snap-fit ​​structures, making their configurations more flexible.

[0012] Optionally, when the first snap-fit ​​structure is a snap-fit ​​boss, a first guide structure is provided on the side of the snap-fit ​​boss that faces away from the bottom of the mounting cavity. When the second snap-fit ​​structure is a snap-fit ​​boss, a second guide structure is provided on the side of the snap-fit ​​boss that faces the bottom of the mounting cavity.

[0013] The first and second guide structures can guide the installation of the coil frame and facilitate the snap-fit ​​between the snap-fit ​​boss and the snap-fit ​​hole.

[0014] Optionally, the snap-fit ​​boss has opposing first and second sidewalls, the distribution directions of which intersect with the first direction. In the case of a snap-fit ​​boss as the first snap-fit ​​structure, a first reinforcing rib is connected to the first and / or second sidewalls, and the first reinforcing rib is also connected to the cavity wall. In the case of a snap-fit ​​boss as the second snap-fit ​​structure, a second reinforcing rib is connected to the first and / or second sidewalls, and the second reinforcing rib is also connected to the coil frame.

[0015] The first and second reinforcing ribs strengthen the connection between the snap-fit ​​bosses, making the snap-fit ​​boss installation more reliable. This reduces the possibility of damage to the snap-fit ​​boss coil frame during installation.

[0016] Optionally, when the second snap-fit ​​structure is a snap-fit ​​boss, a guide groove extending along the first direction is provided on the cavity wall, and the snap-fit ​​hole and the guide groove are distributed along the first direction. During the installation of the coil bobbin on the base, the guide groove can guide the snap-fit ​​boss so that the snap-fit ​​boss snaps into the snap-fit ​​hole.

[0017] Thus, on the one hand, the guide groove allows for a smaller base size, facilitating deformation of the base during coil frame installation and making it easier for the locking boss to engage with the locking hole. On the other hand, the guide groove also guides the locking boss, reducing the possibility of misalignment of the coil frame during installation, which could prevent the locking boss from engaging with the locking hole.

[0018] Optionally, the coil frame is provided with a locking platform, and the bottom of the mounting cavity is provided with a locking post. A locking hook is connected to the side of the locking post opposite to the bottom of the mounting cavity, and the locking hook protrudes towards the coil frame. The locking hook engages with the locking platform.

[0019] Thus, in addition to the snap-fit ​​between the first and second snap-fit ​​structures, the base can also fix the coil frame using hooks. This multiple connection between the coil frame and the base improves the stability of the coil frame within the mounting cavity, helps maintain the correct mounting position of the coil frame and the first iron core, and consequently makes the contactor's operation more reliable.

[0020] Optionally, the bottom of the mounting cavity is provided with a clearance through hole, and in the first direction, the projection of the hook coincides with the projection of the hole wall of the clearance through hole.

[0021] Therefore, when making the base, the portion of the mold between the hook and the clearance hole can be pulled out from the bottom of the base first. This allows the remaining mold to separate normally from the base for demolding, reducing the possibility that the base may not be able to demold properly due to the hook.

[0022] Optionally, the latch has a first surface facing away from the bottom of the mounting cavity and a second surface facing the coil bobbin, the connection between the first surface and the second surface being at least one of an arc structure and a slope structure. And / or, the latch has a third surface facing the bottom of the mounting cavity and a fourth surface facing the latch, the connection between the third surface and the fourth surface being at least one of an arc structure and a slope structure.

[0023] This reduces the possibility of damage to the hooks and / or mounting platforms during the installation of the coil frame, and facilitates the installation and fixation of the coil frame in the base.

[0024] Optionally, the connection between the snap-fit ​​post and the bottom of the mounting cavity has an arc-shaped structure.

[0025] This allows for a smooth transition between the snap-fit ​​post and the bottom of the mounting cavity. This smooth transition reduces the possibility of stress concentration between the snap-fit ​​post and the bottom of the mounting cavity. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a contactor according to an embodiment of this application.

[0027] Figure 2 This is a schematic diagram of a contactor with its top cover removed according to an embodiment of this application.

[0028] Figure 3 This is a schematic diagram of a base according to an embodiment of this application.

[0029] Figure 4 This is a schematic diagram of the installation of a first iron core and a coil frame according to an embodiment of this application.

[0030] Figure 5 This is a schematic diagram of the installation of a first iron core and coil frame according to an embodiment of this application from another perspective.

[0031] Figure 6 This is a cross-sectional view of a coil frame and a first iron core installed in a base according to an embodiment of this application.

[0032] Figure 7 for Figure 6 A magnified view of a portion of point A in the middle.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100: Contactor; 10: Base; 11: Mounting cavity; 111: Cavity wall; 112: Cavity opening; 113: Cavity bottom; 12: First snap-fit ​​structure; 121: Snap-fit ​​hole; 13: Snap-fit ​​post; 14: Hook; 15: Clearance through hole; 141: First surface; 142: Second surface; 16: Guide groove; 20: Coil frame; 21: Second snap-fit ​​structure; 211: Snap-fit ​​boss; 212: Second guide structure; 213: Second reinforcing rib; 22: Snap-fit ​​platform; 221: Third surface; 222: Fourth surface; 30: First iron core; 31: Air gap; 40: Arc structure; 50: Top cover; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0037] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In this article, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0041] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0042] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is connected; it can also refer to the internal connection of two elements. A signal connection can refer not only to a signal connection through a circuit but also to a signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0044] The contactor 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0045] Reference Figure 1 , Figure 2 and Figure 3 As shown, this application provides a contactor 100, including a base 10, a coil frame 20, and a first iron core 30. The first iron core 30 has an air gap 31 on one side. The base 10 has a mounting cavity 11 inside. The first iron core 30 is sleeved on the coil frame 20. In the first direction X, the projection of the side of the first iron core 30 with the air gap 31 coincides with the projection of the coil frame 20. The mounting cavity 11 also has a cavity wall 111 intersecting the first direction X. A first snap-fit ​​structure 12 is provided on the cavity wall 111, and a second snap-fit ​​structure 21 is provided on the coil frame 20. The first snap-fit ​​structure 12 and the second snap-fit ​​structure 21 snap together. The first direction X is the direction from the cavity opening 112 to the cavity bottom 113 of the mounting cavity 11.

[0046] In this embodiment, the base 10 of the contactor 100 has a mounting cavity 11 inside, through which the coil frame 20 and the first iron core 30 can be mounted. Thus, the base 10 provides mounting space for the coil frame 20 and the first iron core 30 through the mounting cavity 11, and the base 10 also provides mechanical support for the coil frame 20 and the first iron core 30, enabling them to function normally.

[0047] The mounting cavity 11 has a first snap-fit ​​structure 12 on its cavity wall 111, and a second snap-fit ​​structure 21 on its coil frame 20. The first snap-fit ​​structure 12 can engage with the second snap-fit ​​structure 21, thus allowing the coil frame 20 to be mounted on the base 10, giving the coil frame 20 a defined position relative to the base 10. The first iron core 30 is fitted onto the coil frame 20, and the base 10 can also support and fix the first iron core 30 through the coil frame 20.

[0048] The contactor 100 has a first direction X, which is the direction from the opening 112 of the mounting cavity 11 to the bottom 113 of the mounting cavity 11. Therefore, the coil frame 20 and the first iron core 30 can be assembled along the first direction X to enter the mounting cavity 11 from the opening 112 of the mounting cavity 11, and are fixed by the snap-fit ​​of the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21.

[0049] In this application, in the first direction X, the projection of the side of the first core 30 where the air gap 31 is provided partially overlaps with the projection of the coil frame 20. Therefore, on the side of the first core 30 where the air gap 31 is provided, the first core 30 extends inward and faces the first core 30. Thus, the surface of the coil frame 20 in the first direction X mates with the first core 30.

[0050] In this embodiment, the cavity wall 111 of the mounting cavity 11, where the first snap-fit ​​structure 12 is located, intersects with the first direction X. The second snap-fit ​​structure 21 snaps into the first snap-fit ​​structure 12. Therefore, the positions of both the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21 are offset from the surface of the coil frame 20 in the first direction X. This reduces the possibility of interference between the placement of the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21 and the snap-fit ​​mechanism on the first iron core 30, making the installation of the coil frame 20 in the base 10 more reasonable.

[0051] In this embodiment, the contactor 100 may further include a second iron core and a coil, with the coil disposed on the coil frame 20. The first iron core 30 may serve as a stationary iron core, and the second iron core may serve as a moving iron core. The cooperation between the first iron core 30 and the second iron core enables the contactor 100 to operate normally.

[0052] Specifically, the second iron core is movably installed in the contactor 100, and the second iron core is opposite to the air gap 31. Thus, when the coil is energized or de-energized, the first iron core 30 can generate a magnetic field under the action of the coil, attracting the second iron core, or the magnetic field disappears, canceling the attraction to the second iron core. The movement of the second iron core can cause the contacts in the contactor 100 to close or open, so as to realize the normal operation of the contactor 100.

[0053] To make the solution and beneficial effects of this application clearer, this application will be described in detail in conjunction with relevant technologies.

[0054] For ease of description, base 10 is... Figure 2 and Figure 3 The following explanation uses the orientation shown as an example. The side of the bottom 113 of the mounting cavity 11 is called the lower side of the base 10, and the side of the opening 112 of the mounting cavity 11 is called the upper side of the base 10. The orientation of the coil frame 20 and other components in the mounting cavity 11 is consistent with the orientation of the base 10. For example, the side of the coil frame 20 facing the bottom 113 of the mounting cavity 11 is called the lower side of the coil frame 20, and the side of the coil frame 20 facing the opening 112 of the mounting cavity 11 is called the upper side of the coil frame 20.

[0055] In related technologies, the stationary iron core is generally an "E"-shaped iron core. An "E"-shaped iron core consists of one horizontal section and three vertical sections, with the three vertical sections spaced apart and connected to the horizontal section, forming an "E"-like shape. During installation, the "E"-shaped iron core is inserted into the coil frame from the bottom, and then the "E"-shaped iron core and coil frame are installed as a whole into the base. The coil frame and base are then locked from the top using threaded fasteners, completing the installation.

[0056] In this configuration of the related technology, there is no opposing portion between the vertical part of the stationary iron core and the coil frame. Therefore, there is no mating between the stationary iron core and the coil frame on the upper side. Consequently, when fixing the coil frame, a threaded fitting can be used from the top. However, this configuration is only suitable for coil frames with an "E" type iron core. For coil frames with other types of stationary iron cores, interference will occur when fixing the coil frame.

[0057] In this application, a mating portion exists between the first iron core 30 and the coil frame 20 on the upper side. Therefore, the first iron core 30 cannot be installed using the bottom-mounted method found in related technologies; instead, it must be inserted through the side of the coil frame 20. Under this specific installation method, if the coil frame 20 is still fixed via its upper side, it will inevitably affect the placement of the first iron core 30 or damage it.

[0058] Based on this, this application provides a first snap-fit ​​structure 12 on the cavity wall 111 of the mounting cavity 11 and a second snap-fit ​​structure 21 on the coil frame 20. In this way, the snap-fit ​​structure 12 and the second snap-fit ​​structure 21 can fix the coil frame 20 from the side, thereby reducing the impact on the first iron core 30.

[0059] It should be noted that, in this embodiment, the first iron core 30 can specifically be a "U"-shaped iron core, which may include a first post, a second post, and a yoke, with both the first and second posts connected to the yoke. The first post has a portion extending towards the second post, and the second post has a portion extending towards the first post. An air gap 31 can be formed between the first and second posts on the side away from the yoke. This allows for a smaller air gap 31, resulting in lower magnetic leakage at the first iron core 30. Compared to an "E"-shaped iron core, the "U"-shaped iron core has a larger magnetic pole area, leading to lower start-up and holding power consumption for the contactor 100 with the "U"-shaped iron core, resulting in significant energy savings.

[0060] Of course, the first iron core 30 in this application can also be other types of iron cores, such as an "F"-shaped iron core extending inward at the air gap 31, etc. The specific type of the first iron core 30 is not specifically limited in this embodiment.

[0061] In some embodiments, such as Figure 1 , Figure 2 As shown, the contactor 100 also has a second direction Y, and the first iron core 30 can be sleeved on the coil frame 20 along the second direction Y. In this way, when installing the first iron core 30, the obstruction of the coil frame 20 to the first iron core 30 can be reduced, so that the first iron core 30 can be installed normally.

[0062] It should be noted that, as Figure 4 and Figure 5 As shown, the first iron core 30 may specifically include multiple stacked magnetic sheets, which may be distributed along the second direction Y.

[0063] Wherein, the first direction X intersects with the second direction Y, and there may be an angle between the first direction X and the second direction Y. In the embodiments of this application, the angle between the first direction X and the second direction Y may be 90°, 70°, 78°, 85°, or 99°, etc.

[0064] In this application, in the second direction Y, the coil frame 20 has a first side and a second side, and the first side and / or the second side of the coil frame 20 are provided with a second snap-fit ​​structure 21.

[0065] Thus, the second snap-fit ​​structure 21 can be specifically disposed on the upper surface of the coil frame 20 in the second direction Y. In this way, the snap-fit ​​direction of the second snap-fit ​​structure 21 and the first snap-fit ​​structure 12 is parallel to the installation direction of the first iron core 30. During the installation of the first iron core 30, interference between the first iron core 30 and the second snap-fit ​​structure 21 can be reduced, making it possible for the first iron core 30 to be unable to pass over the second snap-fit ​​structure 21 and be properly inserted into the coil frame 20.

[0066] It should be noted that, in the embodiments of this application, the second snap-fit ​​structure 21 has different configurations. For example, the second snap-fit ​​structure 21 may be configured only on the first side of the coil frame 20, or the second snap-fit ​​structure 21 may be configured only on the second side of the coil frame 20.

[0067] Alternatively, there can be multiple second snap-fit ​​structures 21. Some of these second snap-fit ​​structures 21 can be located on the first side of the coil frame 20, while others can be located on the second side. In this way, there are more snap-fit ​​points between the coil frame 20 and the base 10, which can improve the fixing effect of the coil frame 20 in the base 10.

[0068] On the same side of the coil frame 20, there can be multiple second snap-fit ​​structures 21. For example, on the first side of the coil frame 20, two, three, or other numbers of second snap-fit ​​structures 21 can be provided. This can also improve the fixing effect of the coil frame 20.

[0069] It should also be noted that placing the second snap-fit ​​structure 21 on the first side and / or the second side of the coil frame 20 is a preferred method, which can better reduce the interference of the second snap-fit ​​structure 21 on the installation of the first iron core 30.

[0070] In addition to the methods described above, the second snap-fit ​​structure 21 can also be located in other positions. Specifically, the contactor 100 can also have a third direction Z, and the first post and the second post can be distributed along the third direction Z. When the size of the first core 30 in the second direction Y is small, the second snap-fit ​​structure 21 can be located on the surface of the coil frame 20 in the third direction Z.

[0071] At this point, in order to ensure that the first iron core 30 can be properly installed, the position of the second snap-fit ​​structure 21 can be set according to the installation direction of the first iron core 30. For example, when installing the first iron core 30, it can be installed into the coil frame 20 from the first side to the second side. In this case, the second snap-fit ​​structure 21 can be set close to the second side and spaced apart from the first iron core 30.

[0072] In the following description, the second snap-fit ​​structure 21 is specifically described as being provided on the first side and / or the second side of the coil frame 20.

[0073] In some embodiments, such as Figures 3 to 5 As shown, the first snap-fit ​​structure 12 can be one of the snap-fit ​​boss 211 and the snap-fit ​​hole 121, and the second snap-fit ​​structure 21 can be the other of the snap-fit ​​boss 211 and the snap-fit ​​hole 121. The snap-fit ​​boss 211 is embedded in the snap-fit ​​hole 121. Thus, the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21 can be arranged in different ways to realize the connection between the coil frame 20 and the base 10.

[0074] The base 10, as part of the housing of the contactor 100, is generally made of plastic, which provides insulation. The plastic base 10 has a certain degree of elasticity, which facilitates the engagement between the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21.

[0075] Specifically, the connection between the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21 will be explained in detail using the following two methods as examples.

[0076] In one method, the first snap-fit ​​structure 12 can be a snap-fit ​​boss 211, and the second snap-fit ​​structure 21 can be a snap-fit ​​hole 121. That is, the cavity wall 111 of the mounting cavity 11 is provided with a snap-fit ​​boss 211, and the coil frame 20 is provided with a snap-fit ​​hole 121. In this way, when the first iron core 30 is installed into the coil frame 20, the coil frame 20 can move along the first direction X, so that the coil frame 20 can approach the snap-fit ​​boss 211.

[0077] During this process, the coil frame 20 can squeeze the snap-fit ​​boss 211, causing the snap-fit ​​boss 211 to deform. When the snap-fit ​​boss 211 is in a position opposite to the snap-fit ​​hole 121, the snap-fit ​​boss 211 can be embedded in the snap-fit ​​hole 121 and restore its deformation, thereby realizing the installation of the coil frame 20.

[0078] In this configuration of Method 1, the coil frame 20 is installed along the first direction X, moving from the opening 112 of the mounting cavity 11 to the bottom 113 of the mounting cavity 11. During this process, the side of the engaging boss 211 facing away from the bottom 113 of the mounting cavity 11 abuts against the coil frame 20 and is subjected to pressure from the coil frame 20. In other words, the coil frame 20 exerts force on the engaging boss 211 from above; therefore, the side of the engaging boss 211 facing away from the bottom 113 of the mounting cavity 11 will, to some extent, hinder the installation of the coil frame 20.

[0079] In this embodiment, a first guide structure may be provided on the side of the snap-fit ​​boss 211 facing away from the bottom 113 of the mounting cavity 11. Thus, during the installation of the coil frame 20, the coil frame 20 can compress the first guide structure, facilitating deformation of the snap-fit ​​boss 211 and the base 10. Simultaneously, the first guide structure on the side of the snap-fit ​​boss 211 facing away from the bottom 113 of the mounting cavity 11 can also guide the coil frame 20, guiding its movement during installation.

[0080] It should be noted that the first guide structure can have different structures. For example, a rounded corner can be provided on the side of the snap-fit ​​boss 211 facing away from the bottom 113 of the mounting cavity 11. The rounded corner can form the first guide structure, reducing the friction between the snap-fit ​​boss 211 and the coil frame 20 during the installation of the coil frame 20, making the assembly of the coil frame 20 smoother. Furthermore, the rounded corner also facilitates the deformation of the snap-fit ​​boss 211 under the pressure of the coil frame 20, making it easier for the coil frame 20 to move along the rounded corner, thus providing a guiding function for the installation of the coil frame 20.

[0081] Alternatively, an angle can be provided on the side of the snap-fit ​​boss 211 facing away from the bottom 113 of the mounting cavity 11, and the angle can also form a first guide structure. In this way, the snap-fit ​​boss 211 can guide the movement of the coil frame 20 through the angle, so that the coil frame 20 can move along the angle and press against the snap-fit ​​boss 211 through the angle. In this way, it is also convenient to install the coil frame 20.

[0082] Method 2, such as Figure 2 , Figure 3 and Figure 5 As shown, the first snap-fit ​​structure 12 can be a snap-fit ​​hole 121, and the second snap-fit ​​structure 21 can be a snap-fit ​​boss 211. That is, the cavity wall 111 of the mounting cavity 11 is provided with a snap-fit ​​hole 121, and the coil frame 20 is provided with a snap-fit ​​boss 211. In this way, when the first iron core 30 is installed into the coil frame 20, the coil frame 20 can move along the first direction X, so that the coil frame 20 can approach the snap-fit ​​hole 121.

[0083] When the snap-fit ​​boss 211 is opposite to the cavity wall 111 of the mounting cavity 11, the coil frame 20 can be pressed against the cavity wall 111 of the mounting cavity 11 by the snap-fit ​​boss 211, causing the base 10 to deform and avoid the coil frame 20. When the snap-fit ​​boss 211 is in the position opposite to the snap-fit ​​hole 121, the snap-fit ​​boss 211 can be embedded in the snap-fit ​​hole 121 and restore its deformation, thereby realizing the installation of the coil frame 20.

[0084] In this configuration of Method Two, the coil frame 20 is installed along the first direction X, moving from the opening 112 of the mounting cavity 11 to the bottom 113 of the mounting cavity 11. During this process, the side of the snap-fit ​​boss 211 facing the bottom 113 of the mounting cavity 11 will abut against the base 10, and the coil frame 20 can press against the base 10 through the snap-fit ​​boss 211, allowing the base 10 to deform and avoid the impact.

[0085] In this embodiment, a second guide structure 212 may be provided on the side of the snap-fit ​​boss 211 facing the cavity bottom 113 of the mounting cavity 11, such as... Figure 2 , Figure 3 and Figure 5 As shown. Thus, during the installation of the coil frame 20, the coil frame 20 can be pressed against the base 10 by the second guide structure 212. At this time, the side of the snap-fit ​​boss 211 facing the bottom 113 of the mounting cavity 11 can move along the cavity wall 111 of the mounting cavity 11. During this process, the second snap-fit ​​structure 21 provided on the snap-fit ​​boss 211 can guide the relative movement between the coil frame 20 and the base 10, and can guide the movement of the coil frame 20 during the installation process.

[0086] It should be noted that the second guide structure 212 can also have different structures. For example, the second guide structure 212 can be rounded or beveled, etc. The specific structure of the second guide structure 212 will not be described in detail in this embodiment of the application. Please refer to the above description of the first guide structure.

[0087] It should also be noted that, in Method 1, the arrangement of the first guide structure allows for a larger size of the locking boss 211 in the first direction X. Similarly, in Method 2, the arrangement of the second guide structure 212 also allows for a larger size of the locking boss 211 in the first direction X. This increases the size of the locking boss 211, thereby increasing its strength and reducing the possibility of damage.

[0088] Furthermore, when the first and second guide structures are angled, the angled design allows the first and second guide structures 212 to form a wedge shape as a whole. This provides better mutual support between the surfaces of the engaging boss 211, effectively reinforcing the engaging boss 211.

[0089] In some embodiments, the snap-fit ​​boss 211 may have opposing first sidewalls and second sidewalls, the distribution directions of the first sidewalls and the second sidewalls intersecting the first direction X. The snap-fit ​​boss 211 is disposed on the surface of the coil frame 20 in the second direction Y, or on the cavity wall 111 of the mounting cavity 11 in the second direction Y; therefore, the first sidewalls and the second sidewalls may be distributed along the third direction Z.

[0090] In the case where the first snap-fit ​​structure 12 is a snap-fit ​​boss 211 (mode 1), a first reinforcing rib is connected to the first sidewall and / or the second sidewall, and the first reinforcing rib is also connected to the cavity wall 111.

[0091] Thus, a first reinforcing rib can be connected to the first sidewall and the second sidewall. This allows the two sides of the snap-fit ​​boss 211 to be connected to the cavity wall 111 via the first reinforcing rib, improving the connection strength between the snap-fit ​​boss 211 and the cavity wall 111. This reduces the possibility that excessive force on the snap-fit ​​boss 211 could cause it to break when the coil frame 20 presses against it, thereby reducing the stability of the coil frame 20 on the base 10, or even preventing the coil frame 20 from being properly fixed.

[0092] Of course, the snap-fit ​​boss 211 may also have a first reinforcing rib on only one side, that is, the first reinforcing rib may be set only on the first side wall or the second side wall, which can also improve the connection strength between the snap-fit ​​boss 211 and the base 10.

[0093] In the case where the second snap-fit ​​structure 21 is a snap-fit ​​boss 211 (method two), a second reinforcing rib 213 is connected to the first sidewall and / or the second sidewall. The second reinforcing rib 213 is also connected to the coil frame 20, such as... Figure 2 and Figure 5 As shown.

[0094] Thus, second reinforcing ribs 213 can be connected to the first and second sidewalls. This allows the two sides of the snap-fit ​​boss 211 to be connected to the coil frame 20 via the second reinforcing ribs 213, improving the connection strength between the snap-fit ​​boss 211 and the coil frame 20. The second reinforcing ribs 213 also reduce the risk of the snap-fit ​​boss 211 breaking due to excessive force when the coil frame 20 presses against the base 10. This would reduce the stability of the coil frame 20 on the base 10, and could even prevent the coil frame 20 from being properly secured.

[0095] Of course, the snap-fit ​​boss 211 may also have a second reinforcing rib 213 on only one side, that is, the second reinforcing rib 213 may be set only on the first side wall or the second side wall, which can also improve the connection strength between the snap-fit ​​boss 211 and the coil frame 20.

[0096] It should be noted that, as a preferred embodiment, the first snap-fit ​​structure 12 can be a snap-fit ​​hole 121, which facilitates the formation of the first snap-fit ​​structure 12 on the cavity wall 111 of the mounting cavity 11. Specifically, the base 10 is generally manufactured by injection molding. In this molding method, forming the snap-fit ​​hole 121 on the cavity wall 111 of the mounting cavity 11 is relatively convenient. A protrusion can be provided at the corresponding position in the mold to form the snap-fit ​​hole 121 on the base 10, which facilitates molding and demolding. Alternatively, the snap-fit ​​hole 121 can be formed on the cavity wall 111 of the mounting cavity 11 after the base 10 is formed, by cutting or other methods.

[0097] In some embodiments, such as Figures 2 to 4 As shown, when the second snap-fit ​​structure 21 is a snap-fit ​​boss 211, a guide groove 16 extending along the first direction X can be provided on the cavity wall 111, and the snap-fit ​​hole 121 and the guide groove 16 are distributed along the first direction X. During the process of installing the coil frame 20 on the base 10, the guide groove 16 can guide the snap-fit ​​boss 211 so that the snap-fit ​​boss 211 snaps into the snap-fit ​​hole 121.

[0098] Thus, on the one hand, the guide groove 16 allows the base 10 to be smaller in size. Therefore, during the installation of the coil frame 20, when the coil frame 20 presses against the base 10, it facilitates the deformation of the base 10, thereby allowing the snap-fit ​​boss 211 to move in the mounting cavity 11 so that the snap-fit ​​boss 211 can snap into the snap-fit ​​hole 121.

[0099] On the other hand, the guide groove 16 can also guide the snap-fit ​​boss 211. During the installation of the coil frame 20, the snap-fit ​​boss 211 can move along the guide groove 16, which makes it easier for the snap-fit ​​boss 211 to snap into the snap-fit ​​hole 121. This can reduce the possibility that the coil frame 20 will be misaligned during the installation process, making it difficult for the snap-fit ​​boss 211 to snap into the snap-fit ​​hole 121.

[0100] To improve the guiding effect of the guide groove 16 on the snap-fit ​​boss 211, the bottom of the guide groove 16 can be inclined. For ease of description, the cavity wall 111 of the mounting cavity 11 in the second direction Y is referred to as the first sub-wall and the second sub-wall. The guide groove 16 can be provided on the first sub-wall and / or the second sub-wall.

[0101] Regarding the guide groove 16 on the first sub-wall, the side of the bottom of the guide groove 16 that is away from the bottom of the mounting cavity 11 is relatively far away from the second sub-wall, and the side of the bottom of the guide groove 16 that faces the bottom of the mounting cavity 11 is relatively close to the second sub-wall.

[0102] Regarding the guide groove 16 on the second sub-wall, the side of the bottom of the guide groove 16 that is away from the bottom of the mounting cavity 11 is relatively far away from the first sub-wall, and the side of the bottom of the guide groove 16 that faces the bottom of the mounting cavity 11 is relatively close to the first sub-wall.

[0103] This allows the bottom of the guide groove 16 to be inclined. This improves the guiding effect of the guide groove 16 on the snap-fit ​​boss 211, making it easier for the snap-fit ​​boss 211 to be embedded in the snap-fit ​​hole 121.

[0104] In some embodiments, such as Figures 2 to 4 ,as well as Figure 6 As shown, a locking platform 22 can be provided on the coil frame 20, and a locking post 13 is provided on the bottom 113 of the mounting cavity 11. A locking hook 14 is connected to the side of the locking post 13 away from the bottom 113 of the mounting cavity 11, and the locking hook 14 protrudes towards the coil frame 20. The locking hook 14 engages with the locking platform 22.

[0105] Thus, in addition to the snap-fit ​​between the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21, the base 10 can also fix the coil frame 20 by the hook 14. This increases the number of connections between the coil frame 20 and the base 10, improving the stability of the coil frame 20 in the mounting cavity 11. This helps maintain the correct mounting position of the coil frame 20 and the first iron core 30 in the mounting cavity 11, thereby making the contactor 100 work more reliably.

[0106] Specifically, a hook 14 is connected to the side of the locking post 13 facing away from the bottom 113 of the mounting cavity 11. The hook 14 protrudes towards the coil frame 20. Therefore, compared to the locking post 13, the hook 14 extends towards the coil frame 20. Thus, the locking post 13 can engage with the locking platform 22 on the coil frame 20 via the hook 14, thereby also securing the coil frame 20.

[0107] Furthermore, contactor 100 undergoes mechanical life verification at the factory, during which it vibrates at a certain frequency. However, at the customer's end, the usage scenarios for contactor 100 may be unstable. For example, the installation location of contactor 100 may experience vibration, or the contactor 100 may not be adequately secured. These conditions will cause mechanical vibration of contactor 100 during operation. In contactor 100, the coil frame 20 also needs to be mechanically and electrically connected to other components to ensure the normal operation of contactor 100.

[0108] In this application, the coil frame 20 is fixed by the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21, and by the snap-fit ​​hook 14 and the snap-fit ​​platform 22. This can reduce the possibility of the coil frame 20 becoming loose when the contactor 100 vibrates, thereby reducing the vibration at the coil frame 20. This can reduce the wear between the coil frame 20 and other parts that need to be mechanically or electrically connected, making the operation of the contactor 100 more reliable.

[0109] In this application, the base 10 can be formed by injection molding. During the molding process, molten plastic is injected into the mold, and the molten plastic is cooled and solidified to obtain the base 10. Since the base 10 is provided with a locking post 13 and a locking hook 14, and the locking hook 14 protrudes relative to the locking post 13, the base 10 and the mold will be relatively locked at the locking hook 14, making demolding difficult.

[0110] To facilitate demolding, such as Figure 2 and Figure 6 As shown, the bottom 113 of the mounting cavity 11 can be provided with a clearance through hole 15. In the first direction X, the projection of the hook 14 coincides with the projection of the hole wall of the clearance through hole 15. Thus, during demolding, the portion of the mold between the hook 14 and the clearance through hole 15 can be pulled out from the bottom of the base 10 first. In this way, the remaining mold can be normally separated from the base 10 to achieve demolding. To facilitate the extraction of the portion of the mold between the hook 14 and the clearance through hole 15 during demolding, the portion between the hook 14 and the clearance through hole 15 can be a movable core puller within the mold.

[0111] Furthermore, the connection between the snap-fit ​​post 13 and the bottom 113 of the mounting cavity 11 can be an arc structure 40. This allows for a smooth transition between the snap-fit ​​post 13 and the bottom 113 of the mounting cavity 11. This smooth transition reduces the possibility of stress concentration between the snap-fit ​​post 13 and the bottom 113 of the mounting cavity 11.

[0112] During the installation of the coil frame 20, the clamping platform 22 can press the hook 14 to deform the hook 14 and the locking post 13 until the clamping platform 22 and the hook 14 are engaged. The arc structure 40 between the locking post 13 and the bottom 113 of the mounting cavity 11 can reduce the possibility of the locking post 13 breaking during the installation of the coil frame 20.

[0113] In this embodiment, the side of the snap-fit ​​post 13 that is away from the avoidance through hole 15 can smoothly transition with the bottom 113 of the mounting cavity 11.

[0114] To facilitate the engagement between the card holder 22 and the card hook 14, the following improvements have been made to the card holder 22 and the card hook 14 in this application.

[0115] For hook 14, such as Figure 2 and Figure 7 As shown, the hook 14 may have a first surface 141 facing away from the bottom 113 of the mounting cavity 11 and a second surface 142 facing the coil frame 20. The connection between the first surface 141 and the second surface 142 is at least one of an arc structure 40 and a slope structure.

[0116] When installing the coil frame 20, the clamping platform 22 can press the connection between the first surface 141 and the second surface 142 on the hook 14. In this application, the first surface 141 and the second surface 142 are transitioned by at least one of an arc structure 40 and a slope structure. On the one hand, this can reduce stress concentration between the first surface 141 and the second surface 142, and reduce the possibility of damage to the hook 14 when the clamping platform 22 presses the hook 14 during the installation of the coil frame 20. On the other hand, the arc structure 40 and / or the slope structure at the connection between the first surface 141 and the second surface 142 can also guide the installation of the coil frame 20, making it easier for the coil frame 20 to be installed into the mounting cavity 11 along the first direction X.

[0117] Specifically, the transition between the first surface 141 and the second surface 142 can be achieved through an arc structure 40. Alternatively, the transition between the first surface 141 and the second surface 142 can also be achieved through a slope structure. Or, the transition between the first surface 141 and the second surface 142 can also be achieved through a combination of the arc structure 40 and the slope structure.

[0118] To clarify the solution of this application, the method of transition between the first surface 141 and the second surface 142 through a combination of arc structure 40 and bevel structure will be described in detail here. At the hook 14, the connecting portion of the first surface 141 and the second surface 142 can be beveled to form a bevel structure. Then, at the connection between the bevel structure and the first surface 141, and / or the connection between the bevel structure and the second surface 142, round the corners to form an arc structure 40. With this arrangement, the edges of the first surface 141 and the second surface 142 can be smoother, which can improve the guiding effect between the hook 14 and the mounting base 22.

[0119] Of course, the arc structure 40 and the inclined structure can also be combined in other ways to achieve the transition between the first surface 141 and the second surface 142. In this regard, the embodiments of this application do not make specific limitations.

[0120] For Card 22, such as Figure 2 , Figure 4 and Figure 7As shown, the mounting plate 22 has a third surface 221 facing the bottom 113 of the mounting cavity 11 and a fourth surface 222 facing the hook 14. The connection between the third surface 221 and the fourth surface 222 is at least one of an arc structure 40 and a slope structure.

[0121] When installing the coil frame 20, the clamping platform 22 can press the hook 14 through the connection between the third surface 221 and the fourth surface 222. In this application, the third surface 221 and the fourth surface 222 are also transitioned by at least one of the arc structure 40 and the inclined structure. On the one hand, this can reduce the stress concentration between the third surface 221 and the fourth surface 222, and reduce the possibility of damage to the clamping platform 22 when installing the coil frame 20. On the other hand, the arc structure 40 and / or the inclined structure at the connection between the third surface 221 and the fourth surface 222 can also guide the installation of the coil frame 20, making it easier for the coil frame 20 to be installed into the mounting cavity 11 along the first direction X.

[0122] Specifically, the transition between the third surface 221 and the fourth surface 222 can be achieved through an arc structure 40. Alternatively, the transition between the third surface 221 and the fourth surface 222 can also be achieved through a slope structure. Furthermore, the transition between the third surface 221 and the fourth surface 222 can also be achieved through a combination of the arc structure 40 and the slope structure. For details on this, please refer to the foregoing description of the transition between the first surface 141 and the second surface 142; further elaboration is not required here.

[0123] It should be noted that in the embodiments of this application, only the card holder 22 may be improved as described above, or only the card hook 14 may be improved as described above. Of course, both the card holder 22 and the card hook 14 may be improved as described above.

[0124] Additionally, in this application, such as Figure 1 and Figure 2 As shown, the contactor 100 may also include a top cover 50, which cooperates with the base 10 to seal the opening 112 of the mounting cavity 11. In this way, the top cover 50 and the base 10 can form the outer shell of the contactor 100, which can protect components such as the coil frame 20 and the first iron core 30.

[0125] In this embodiment, the cavity wall 111 of the mounting cavity 11, where the first snap-fit ​​structure 12 is provided, intersects with the first direction X. The second snap-fit ​​structure 21 snaps into the first snap-fit ​​structure 12. Therefore, the positions of both the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21 are offset from the surface of the coil frame 20 in the first direction X. This reduces the possibility of interference between the placement of the first snap-fit ​​structure 12 and the second snap-fit ​​structure 21 and the snap-fit ​​mechanism on the first iron core 30, making the installation method of the coil frame 20 in the base 10 more reasonable.

[0126] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A contactor, characterized in that, Includes the base, coil frame, and first iron core: The first iron core has an air gap on one side, and the base has an installation cavity inside. The first iron core is sleeved on the coil frame. In a first direction, the projection of the side of the first iron core with the air gap coincides with the projection of the coil frame. The mounting cavity also has a cavity wall intersecting the first direction, a first snap-fit ​​structure is provided on the cavity wall, and a second snap-fit ​​structure is provided on the coil frame, wherein the first snap-fit ​​structure and the second snap-fit ​​structure snap-fit ​​together. Wherein, the first direction is the direction from the opening of the mounting cavity to the bottom of the mounting cavity.

2. The contactor of claim 1, wherein The contactor also has a second direction, with the first iron core sleeved on the coil frame along the second direction; In the second direction, the coil frame has opposing first and second sides, and the first side and / or the second side of the coil frame are provided with the second snap-fit ​​structure.

3. The contactor of claim 1, wherein, The first snap-fit ​​structure is one of a snap-fit ​​boss and a snap-fit ​​hole, and the second snap-fit ​​structure is the other of a snap-fit ​​boss and a snap-fit ​​hole. The snap-fit ​​boss is embedded in the snap-fit ​​hole.

4. The contactor of claim 3, wherein When the first snap-fit ​​structure is a snap-fit ​​boss, a first guide structure is provided on the side of the snap-fit ​​boss that is away from the bottom of the mounting cavity; When the second snap-fit ​​structure is a snap-fit ​​boss, a second guide structure is provided on the side of the snap-fit ​​boss facing the bottom of the mounting cavity.

5. The contactor of claim 3, wherein The snap-fit ​​boss has a first sidewall and a second sidewall, and the distribution directions of the first sidewall and the second sidewall intersect with the first direction; When the first snap-fit ​​structure is a snap-fit ​​boss, a first reinforcing rib is connected to the first sidewall and / or the second sidewall, and the first reinforcing rib is also connected to the cavity wall. When the second snap-fit ​​structure is a snap-fit ​​boss, a second reinforcing rib is connected to the first sidewall and / or the second sidewall, and the second reinforcing rib is also connected to the coil frame.

6. The contactor of claim 3, wherein When the second snap-fit ​​structure is a snap-fit ​​boss, a guide groove extending along the first direction is provided on the cavity wall, and the snap-fit ​​hole and the guide groove are distributed along the first direction; During the installation of the coil frame onto the base, the guide groove can guide the snap-fit ​​boss so that the snap-fit ​​boss snaps into the snap-fit ​​hole.

7. The contactor of claim 1, wherein The coil frame is provided with a locking platform, and the bottom of the mounting cavity is provided with a locking post. A locking hook is connected to the side of the locking post away from the bottom of the mounting cavity, and the locking hook protrudes towards the coil frame. The hook engages with the card platform.

8. The contactor of claim 7, wherein, The bottom of the mounting cavity is provided with a clearance through hole, and in the first direction, the projection of the hook coincides with the projection of the hole wall of the clearance through hole.

9. The contactor of claim 7, wherein, The hook has a first surface facing away from the bottom of the mounting cavity and a second surface facing the coil frame. The connection between the first surface and the second surface is at least one of an arc structure and a slope structure. And / or, the card table has a third surface facing the cavity bottom of the installation cavity, and a fourth surface facing the card hook, and the connection between the third surface and the fourth surface is at least one of a circular arc structure and an inclined surface structure.

10. The contactor of claim 7, wherein, The connection between the card connecting column and the cavity bottom of the installation cavity is a circular arc structure.

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