Reed drive mechanism and relay

Abstract

This application discloses a reed driving mechanism and a relay, relating to the field of relay technology. The relay includes an electromagnet and a slider. The electromagnet includes a coil and an armature. The armature is rotatably disposed within the relay housing. Magnetic conductors are provided at both ends of the coil to drive the armature. The slider is disposed within the housing, forming an abutment hole. At least a portion of the armature's structure abuts against the inner wall of the abutment hole and is capable of driving the slider to move along a first direction. A boss is provided on the upper top surface of the slider, abutting against the inner wall of the housing. In the technical solution provided by the embodiments of this application, the boss on the upper top surface of the slider abuts against the inner wall of the housing, thereby limiting the slider's movement and preventing it from tilting to either side. This ensures the slider moves along a predetermined path, guaranteeing reliable contact and disengagement between the moving and stationary reeds.

Description

Technical Field

[0001] This application relates to the field of relay technology, and in particular to a reed drive mechanism and a relay. Background Technology

[0002] A relay is an automatic switch that uses a small-current electromagnetic coil to control a large-current circuit. When the coil is energized and generates a magnetic field, it attracts the armature and drives the contacts to close or open, thereby realizing the functions of isolating, amplifying, converting and protecting weak current from strong current. It is widely used in charging piles, automobiles, home appliances and industrial automation.

[0003] Relays typically have a stationary reed and a moving reed. The moving reed can deform to contact or disengage from the stationary reed, thereby controlling the on / off state of external circuits. Generally, the moving reed drives a slider via an armature. The slider contacts the moving reed to drive its movement. Since the slider is not laterally constrained, it is prone to tilting under the push of the armature, deviating from its predetermined motion track. This may lead to unreliable contact and disengagement between the moving and stationary reeds. Utility Model Content

[0004] This application discloses a reed drive mechanism and a relay, which aims to provide a reed drive mechanism that can ensure that the slider moves in a straight line without tilting, thereby reliably driving the reed.

[0005] One embodiment of this application provides a reed drive mechanism, comprising:

[0006] An electromagnet includes a coil and an armature, the armature being rotatably disposed within the housing of a relay, and magnetic conductors being provided at both ends of the coil for driving the armature to move;

[0007] A slider is disposed in the housing, the slider forming an abutment hole, at least a portion of the armature abuts against the inner wall of the abutment hole and is capable of driving the slider to move in a first direction, and the upper top surface of the slider is provided with a boss for abutting against the inner wall of the housing.

[0008] In one embodiment, the slider includes a first plate and a second plate, the first plate and the second plate together forming a snap-fit ​​groove with one end open, a slot forming on one side of the snap-fit ​​groove, and the slot gradually expanding from the end close to the snap-fit ​​groove to the end away from the snap-fit ​​groove.

[0009] The abutment hole is located on the first plate.

[0010] In one embodiment, the slider further includes a third plate body that connects the first plate body and the second plate body, with a portion of the third plate body located above the snap-fit ​​groove.

[0011] In one embodiment, the abutment hole has a first inner wall and a second inner wall disposed opposite to each other, the first inner wall and the second inner wall being spaced apart along the first direction, and the armature abutting against the first inner wall or the second inner wall.

[0012] In one embodiment, the coil includes an iron core and a winding sleeved on the iron core, with both ends of the iron core connected to the two magnetic conductors respectively; the armature is disposed on one side of the iron core along the first direction.

[0013] In one embodiment, the magnetic conductor includes a first part and a second part, the first part and the second part are connected, the first part is disposed on the iron core and extends along the first direction, and the second part extends along the axial direction of the iron core.

[0014] In one embodiment, the armature includes:

[0015] The main body has mating grooves on both sides;

[0016] An abutting portion is provided on the main body, and at least a portion of the abutting portion abuts against the inner wall of the abutting hole;

[0017] At least a portion of the structure of each of the second parts is located within one of the mating grooves.

[0018] In one embodiment, the housing is provided with a support member that abuts against the bottom of the slider.

[0019] One embodiment of this application also provides a relay, comprising:

[0020] The shell has a accommodating cavity;

[0021] A stationary reed is disposed in the receiving cavity;

[0022] A movable spring is movably disposed in the receiving cavity and located on one side of the stationary spring;

[0023] As described above, the reed drive mechanism is located in the receiving cavity, and the slider abuts against the movable end of the moving reed.

[0024] In one embodiment, the housing forms a groove that extends along the first direction, and the slider is slidably disposed in the groove.

[0025] This application provides several embodiments of a reed drive mechanism and a relay. The reed drive mechanism includes an electromagnet and a slider. The electromagnet includes a coil and an armature. When the coil is energized, it generates a magnetic field, which drives the armature to move. One end of the slider abuts against the armature, and the slider slides to push the moving reed closer to the stationary reed until the two close. The upper top surface of the slider is provided with a boss, which abuts against the inner wall of the housing, thereby limiting the slider and preventing it from tilting to both sides. This ensures that the slider moves along a predetermined path and guarantees reliable contact and disengagement between the moving and stationary reeds. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments or prior art of this application, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the reed drive mechanism provided in this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the middle slider;

[0029] Figure 3 for Figure 2 A schematic diagram of the structure of the middle slider at another angle;

[0030] Figure 4 This is a schematic diagram of the structure of the relay provided in this application;

[0031] Figure 5 for Figure 4 A cross-sectional view of a medium-voltage relay;

[0032] Figure 6 This is a schematic diagram of the armature structure.

[0033] Explanation of icon numbers:

[0034] 100. Reed drive mechanism; 1. Electromagnet; 11. Coil; 111. Iron core; 112. Winding; 113. Magnetic conductor; 1131. First part; 1132. Second part; 114. Mounting base; 12. Armature; 121. Main body; 122. Abutting part; 12a. Mating groove; 2. Slider; 21. First plate; 22. Second plate; 23. Third plate; 24. Boss; 2a. Abutting hole; 2a1. First inner wall; 2a2. Second inner wall; 2b. Snap-fit ​​groove; 2c. Slot.

[0035] 200, housing; 210, support; 200a, slide groove; 300, stationary spring; 400, moving spring. Detailed Implementation

[0036] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of several embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0037] It should be noted that if directional indications (such as up, down, left, right, front, back, etc.) are involved in multiple embodiments of this application, the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] Furthermore, if multiple embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0039] A relay typically has a stationary reed 300 and a moving reed 400. The moving reed 400 can deform to contact or disengage from the stationary reed 300, thereby controlling the on / off state of an external circuit. Generally, the moving reed 400 drives the slider 2 via the armature 12. The slider 2 contacts the moving reed 400 to drive its movement. Since the slider 2 is not laterally constrained, it is prone to tilting under the push of the armature 12, deviating from its predetermined motion track, which may lead to unreliable contact and disengagement between the moving reed 400 and the stationary reed 300.

[0040] To address the aforementioned problems, this application proposes a reed drive mechanism 100 to solve the technical issues mentioned above.

[0041] Please see Figure 1In one embodiment of this application, the reed drive mechanism 100 includes an electromagnet 1 and a slider 2. The electromagnet 1 includes a coil 11 and an armature 12. The armature 12 is rotatably disposed within the housing 200 of the relay. The two ends of the coil 11 are provided with magnetic conductive elements 113, which are used to drive the armature 12 to move. The slider 2 is disposed in the housing 200 and forms an abutment hole 2a. At least a portion of the structure of the armature 12 abuts against the inner wall of the abutment hole 2a and can drive the slider 2 to move in a first direction. The upper top surface of the slider 2 is provided with a boss 24, which abuts against the inner wall of the housing 200.

[0042] This application provides several embodiments of a reed drive mechanism 100 and a relay. The reed drive mechanism 100 includes an electromagnet 1 and a slider 2. The electromagnet 1 includes a coil 11 and an armature 12. When the coil 11 is energized, it generates a magnetic field, thereby driving the armature 12 to move. The slider 2 abuts against one end of the armature 12, and the slider 2 slides to push the movable reed 400 closer to the stationary reed 300 until they close. A boss 24 is provided on the upper top surface of the slider 2, which abuts against the inner wall of the housing 200, thereby limiting the slider 2 and preventing it from tilting to either side. This ensures that the slider 2 moves along a predetermined path, guaranteeing reliable contact and disengagement between the movable reed 400 and the stationary reed 300. Furthermore, to ensure reliable sliding of the slider 2, a support member 210 is provided at the bottom of the housing 200 facing upwards. For further details, please refer to [link to relevant documentation]. Figure 4 The support member 210 and the housing 200 are an integral structure. The top of the support member 210 abuts against the bottom of the slider 2, thereby providing support for the slider 2. When the slider 2 pushes the moving spring 400 to move towards the stationary spring 300, the space defined by the support member 210 and the slide groove 200a can ensure that the slider 2 moves along a predetermined trajectory.

[0043] The boss 24 on the top surface of the slider 2 forms a hard stop with the inner wall of the housing 200. When the armature 12 pushes the slider 2 forward or backward, the boss 24 always maintains single-sided contact with the housing 200, generating a pair of opposing torques to counteract the lateral force applied by the armature 12. With the help of this torque, the slider 2 is constrained within a straight trajectory and cannot tilt or twist to the left or right, thereby ensuring that the abutment hole 2a and the armature 12 are always coaxial, preventing the slider 2 from tilting to the side and deviating from the movement trajectory, and realizing a reliable limiting function.

[0044] In the technical solution of this application, the armature 12 can drive the slider 2 to move along the first direction and away from the coil 11, thereby pushing the slider 2 to compress the moving spring 400. Under the pushing force of the slider 2, the moving spring 400 continues to approach the stationary spring 300 until the two contact. At this time, the external circuit is normally connected. When the current in the coil 11 disappears, the magnetic field generated by the coil 11 also disappears. The pushing force of the armature 12 becomes 0. The elastic potential energy of the compressed moving spring 400 is converted into its own kinetic energy, thereby moving towards the side away from the stationary spring 300. The moving spring 400 separates from the stationary spring 300, the slider 2 slides to the initial position, and the armature 12 also rotates to the initial position. At this time, the external circuit is disconnected. Furthermore, during the process of the armature 12 driving the slider 2 to move, the structure of the armature 12 located in the abutment hole 2a, that is, the abutment part 122, will always abut against the first inner wall 2a1 of the abutment hole 2a; during the reset process of the moving spring 400, the armature 12 will be pushed to the initial position by the slider 2 and abut against the second inner wall 2a2.

[0045] In one embodiment of this application, the slider 2 adopts an irregular shape design; for details, please refer to further details. Figure 2 and Figure 3 The slider 2 includes a first plate 21 and a second plate 22, which are spaced apart. One end of the second plate 22 is connected to the first plate 21, and the other end is a suspension structure. The first plate 21 and the second plate 22 form a locking groove 2b. The upper end of the movable spring 400 (i.e., the free end of the movable spring 400) is located in the locking groove 2b. When the slider 2 moves in the first direction, the movable spring 400 will abut against the inner wall of the locking groove 2b, thereby driving the movable spring 400 to move.

[0046] To facilitate the installation of slider 2, a slot 2c is formed on one side of the snap-fit ​​groove 2b. For details, please refer to further documentation. Figure 3 When assembling slider 2, slider 2 is inserted into housing 200 along the direction perpendicular to slot 2c. This allows the movable spring 400 to enter the slot through slot 2c without interference. Slot 2c allows slider 2 and movable spring 400 to be inserted as a whole along the direction perpendicular to slot 2c, eliminating the need to bend or assemble the spring separately. This avoids interference and deformation between the spring and slider 2, shortens assembly time, and improves production efficiency. Furthermore, in this embodiment, slot 2c is trumpet-shaped. The gradually expanding trumpet-shaped slot 2c forms a guide slope, allowing the movable spring 400 to slide into the locking slot 2b from large to small during assembly, automatically centering and reducing edge scratches. At the same time, the slope provides springback space, preventing the spring from jamming due to interference, thus improving assembly tolerance and protecting the spring plating from scratches.

[0047] In another embodiment of this application, the slider 2 further includes a third plate 23, with the first plate 21 and the second plate 22 connected to its two ends respectively. The third plate 23 connects the first and second plates 22 into one unit, serving both as a top cover of the slider 2 to block the moving spring 400 from jumping out and as a longitudinal support when the boss 24 abuts against the housing 200, enhancing overall rigidity and ensuring that the slider 2 maintains linear motion without twisting during high-frequency reciprocating motion. The first plate 21, the second plate 22, and the third plate 23 are integrally formed, which enhances the overall rigidity of the slider 2, avoids weak points caused by welding or screw connections, and thus improves its stability during high-frequency reciprocating motion. At the same time, the integral forming eliminates the cumulative error of assembling multiple parts, ensuring the accuracy and consistency of the slider 2 and guaranteeing reliable contact between the moving spring 400 and the stationary spring 300. In addition, this structure reduces the number of parts and assembly steps, lowers production costs and defect rates, simplifies the design and manufacturing process, improves production efficiency and product quality controllability, and enhances the durability and reliability of the product during long-term use.

[0048] The coil 11 of this application includes an iron core 111 and a winding 112 wound around the outer periphery of the iron core 111. The two ends of the iron core 111 are respectively connected to two mounting bases 114 and partially pass through the mounting bases 114 to connect with the magnetic conductive part. For details, please refer to further reference. Figure 5 The winding 112 is connected to the terminal block. When the terminal block is connected to an external circuit, current flows through the winding 112 and generates a magnetic field, which magnetizes the iron core 111. The iron core 111 then contacts the magnetic conductive part, which also magnetizes the magnetic conductive part, generating magnetic force to control the armature 12 to rotate around the shaft, thereby driving the moving spring 400 and the stationary spring 300 to close or open.

[0049] To ensure that the magnetic field generated by the energized coil 11 can drive the armature 12 to rotate around the shaft, magnetic conductive parts are provided at the mounting bases 114 at both ends of the coil 11. The magnetic conductive parts are L-shaped and can be led out radially along the coil 11 and act on the armature 12. Correspondingly, the armature 12 has mating parts at both ends along the first direction. For details, please refer to further reference. Figure 5 and Figure 6Both ends of the armature 12 body 121 form mating grooves 12a. Part of the magnetic conductive part is located within the mating grooves 12a. When the coil 11 is energized, the magnetic conductive parts located at both ends of the coil 11 are magnetized and generate a magnetic field. The armature 12 is attracted by the magnetic conductive part, thereby driving the armature 12 to rotate around the axis under the action of magnetic force. The magnetic conductive part is L-shaped plate. Specifically, the magnetic conductive part includes a first part 1131 and a second part 1132 connected to each other. The first part 1131 is located on the mounting base 114, and at least part of the structure of the second part 1132 is located within the mating grooves 12a. The second part 1132 is arranged along a first direction, and the first part 1131 is arranged along a second direction. The first part 1131 and the second part 1132 are arranged perpendicularly and are an integral structure. Through the L-shaped magnetic conductive part, the magnetic field generated by the coil 11 can be guided to act on the armature 12.

[0050] This application also proposes a relay comprising a housing 200, a stationary spring 300, a movable spring 400, and a spring drive mechanism 100 as described above. The housing 200 has a receiving cavity in which both the stationary spring 300 and the movable spring 400 are disposed. The spring drive mechanism 100 is disposed in the receiving cavity. A slider 2 abuts against the movable end of the movable spring 400 and is capable of driving the movable spring 400 to move. The housing 200 forms a sliding groove 200a extending along a first direction, and the slider 2 is slidably disposed in the sliding groove 200a. The specific structure of the spring drive mechanism 100 is as described in the above embodiments. Since this relay adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0051] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A reed drive mechanism characterized by, include: An electromagnet (1) includes a coil (11) and an armature (12). The armature (12) is rotatably disposed within the housing (200) of a relay. Magnetic conductors (113) are provided at both ends of the coil (11) to drive the armature (12) to move. A slider (2) is provided on the housing (200). The slider (2) forms an abutment hole (2a). At least a portion of the structure of the armature (12) abuts against the inner wall of the abutment hole (2a) and can drive the slider (2) to move in a first direction. The upper top surface of the slider (2) is provided with a boss (24), which is used to abut against the inner wall of the housing (200).

2. The reed drive mechanism of claim 1, wherein, The slider (2) includes a first plate (21) and a second plate (22). The first plate (21) and the second plate (22) are enclosed to form a snap-fit ​​groove (2b) with one end open. A slot (2c) is formed on one side of the snap-fit ​​groove (2b). The slot (2c) gradually expands from the end close to the snap-fit ​​groove (2b) to the end away from the snap-fit ​​groove (2b). The abutment hole (2a) is provided on the first plate (21).

3. The reed drive mechanism of claim 2, wherein, The slider (2) also includes a third plate (23), which connects the first plate (21) and the second plate (22), and part of the structure of the third plate (23) is located above the snap-fit ​​groove (2b).

4. The reed drive mechanism of any one of claims 1 to 3, wherein, The abutment hole (2a) has a first inner wall (2a1) and a second inner wall (2a2) arranged opposite to each other. The first inner wall (2a1) and the second inner wall (2a2) are spaced apart along the first direction. The armature (12) abuts against the first inner wall (2a1) or the second inner wall (2a2).

5. The reed drive mechanism of claim 4, wherein the reed drive mechanism further comprises a spring. The coil (11) includes an iron core (111) and a winding (112) sleeved on the iron core (111). The two ends of the iron core (111) are respectively connected to the two magnetic conductors (113); the armature (12) is disposed on one side of the iron core (111) along the first direction.

6. The reed drive mechanism of claim 5, wherein the reed drive mechanism further comprises a reed spring coupled to the reed and the reed spring is configured to bias the reed to the reed rest position. The magnetic conductor (113) includes a first part (1131) and a second part (1132), the first part (1131) and the second part (1132) are connected, the first part (1131) is disposed on the iron core (111) and extends along the first direction, and the second part (1132) extends along the axial direction of the iron core (111).

7. The reed drive mechanism of claim 6, wherein the reed drive mechanism further comprises a reed spring coupled to the reed and the reed spring is configured to bias the reed to the reed rest position. The armature (12) includes: The main body (121) has mating grooves (12a) on both sides; An abutting portion (122) is provided on the main body (121), and at least a portion of the structure of the abutting portion (122) abuts against the inner wall of the abutting hole (2a); At least a portion of the structure of each of the second portions (1132) is located within one of the mating grooves (12a).

8. A relay characterized by comprising: include; The shell (200) has a cavity. A stationary reed (300) is disposed in the accommodating cavity; A movable spring (400) is movably disposed in the receiving cavity and located on one side of the stationary spring (300); The reed driving mechanism according to any one of claims 1 to 7 is arranged in the accommodating cavity, and the slider (2) is in abutment with the movable end of the moving reed (400).

9. The relay of claim 8, wherein, The shell (200) forms a sliding groove (200a) arranged in the first direction, and the slider (2) is slidingly arranged in the sliding groove (200a).

10. The relay of claim 8, wherein The shell (200) is provided with a support member (210) in abutment with the bottom of the slider (2).

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