Fixed frame and magnetic holding relay

Abstract

To provide an improved fixing frame and an improved magnetic latching relay.SOLUTION: A fixing frame for fixing a magnetic steel includes a body, at least one longitudinal limiter, and at least one transverse limit structure. The body has a first surface and a second surface opposite to each other, and a shaft hole penetrating the first and second surfaces. A rotating shaft of the magnetic steel is installed in the shaft hole such that the rotating shaft can rotate in the shaft hole. The longitudinal limiter is distributed from one side of the body in a transverse direction to the opposite side. The longitudinal limiter includes two vertical limit columns arranged oppositely along a longitudinal direction and protruding from the first surface in a direction away from the second surface. The two vertical limit columns can clamp a yoke, and are fitted with the yoke without clearance in the longitudinal direction. The transverse limit structure is positioned on the body. The transverse limit structure is configured to be fitted with a transverse fit structure of the magnetic latching relay without clearance in the transverse direction. The transverse direction is perpendicular to the longitudinal direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the field of relay technology, and more particularly to fixed frame and magnetically held relays. [Background technology]

[0002] A magnetic hold relay is an automatic switch that turns a circuit on and off. It includes a base, magnetic steel (permanent magnet), an armature located on both sides of the magnetic steel, a fixed frame, and a yoke. The magnetic steel is attached to the base and has a rotating shaft. When a pulse voltage is applied to the magnetic hold relay, the rotating shaft of the magnetic steel rotates, causing the armature to swing and forming an overlapping connection between the armature and the yoke. The fixed frame is configured to fix the magnetic steel to the base, and has a shaft hole through which the rotating shaft can pass to allow it to rotate flexibly.

[0003] The fixed frame has a fixed post, and when fixing the magnetic steel, the fixed post of the fixed frame is inserted into a corresponding hole in the base, and the rotating shaft of the magnetic steel passes through the shaft hole in the fixed frame. However, because the structure of the base is relatively complex, the base may be injection-molded unevenly during manufacturing, and the fixed post may not be inserted perfectly perpendicular to the hole in the base, resulting in misalignment of the fixed frame, which will generate stress between the shaft hole and the rotating shaft of the magnetic steel, affecting the rotation of the rotating shaft and ultimately affecting the swing of the armature, resulting in poor lap connection between the armature and the yoke, and further affecting the electrical performance of the relay. The information disclosed in the above background section is intended only to enhance understanding of the background of the present invention and, therefore, may include information that does not constitute related art already known to those skilled in the art. Summary of the Invention

[0004] The embodiment of the present invention provides a fixed frame and a magnetic retention relay, in which the fixed frame is mounted vertically and accurately on the base, does not affect the rotation of the rotating shaft of the magnetic steel, and the overlap connection between the armature and the yoke is accurate and stable, thereby improving the electrical performance of the relay. An embodiment of the present invention provides a fixing frame for fixing at least a magnetic steel of a magnetic holding relay, the fixing frame comprising a body, at least one longitudinal limiter, and at least one lateral limit structure. The body has first and second surfaces facing each other, and further has an axial hole penetrating the first and second surfaces, the axial hole mounting the magnetic steel rotating shaft so that the rotating shaft can rotate within the axial hole, at least one longitudinal limiter distributed from one side to the other side in the lateral direction of the body, the longitudinal limiter including two longitudinal limit posts arranged opposite to each other along the longitudinal direction, the longitudinal limit post protruding from the first surface in a direction away from the second surface, the two longitudinal limit posts being arranged to be clamped by a yoke of the magnetic hold relay and non-gap-fitting with the yoke in the longitudinal direction, at least one lateral limit structure located on the body, the lateral limit structure being able to non-gap-fit ​​with the lateral fitting structure of the magnetic hold relay in the lateral direction, the lateral direction being perpendicular to the longitudinal direction.

[0005] In some embodiments of the present invention, the lateral fitting structure includes a mounting hole in the base of the magnetic holding relay, and the lateral limit structure includes a lateral limiter, the lateral limiter is located on one side of the body along the longitudinal direction, and the lateral limiter protrudes from the first surface in a direction away from the second surface, and the lateral limiter is configured to be insertable into the mounting hole and to have a non-gap fit with the mounting hole in the lateral direction.

[0006] In some embodiments of the present invention, the lateral fitting structure includes a protrusion located on the yoke of the magnetic hold relay, and when the fixed frame is attached to the magnetic hold relay, the protrusion protrudes toward the fixed frame, and the lateral limit structure includes a lateral limit hole penetrating the first surface and the second surface, the lateral limit hole being adjacent to the vertical limiter, and the lateral limit hole being configured to have a non-gap fit with the protrusion in the lateral direction. In some embodiments of the present invention, the number of the vertical limiter is one, and it is provided on one side of the body in the horizontal direction.

[0007] In some embodiments of the present invention, the number of the longitudinal limiters is two, and they are located on opposite sides distributed along the transverse direction of the main body, and the two longitudinal limiters can be clamped between the two oppositely arranged yokes of the magnetic holding relay and are configured to have a non-gap fit with the yokes in the longitudinal direction.

[0008] In some embodiments of the present invention, the number of the lateral limiters is plural, the lateral limiters are provided on one side of the main body in the vertical direction, the lateral limiters are arranged along the horizontal direction, and the number of the lateral limiters is configured to be less than or equal to the number of mounting holes in the base of the magnetic holding relay.

[0009] In some embodiments of the present invention, the lateral limiter has a dimension along the longitudinal direction that is smaller than a dimension along the longitudinal direction of the mounting hole in the base.

[0010] In some embodiments of the present invention, the body further has a lateral limit hole and an adhesive drip port penetrating the first surface and the second surface, respectively, the lateral limit hole adjacent to the vertical limiter, and the adhesive drip port adjacent to the lateral limiter.

[0011] In some embodiments of the present invention, the main body is T-shaped and includes a horizontal portion extending along the horizontal direction and a vertical portion extending along the vertical direction, the vertical portion extending along the vertical direction from a central portion of the horizontal portion, the vertical limiter being located in the horizontal portion, and the lateral limiter being located in the vertical portion.

[0012] An embodiment of the present invention also provides a magnetic holding relay, comprising: a base; a magnetic steel member attached to the base and having a rotation axis; two yokes fixedly mounted on the base and located on opposite sides of the magnetic steel member; a lateral fitting structure mounted on the yoke; and a fixed frame, wherein the fixed frame comprises a main body, at least one longitudinal limiter, and at least one lateral limit structure, the main body having a first surface and a second surface facing each other, and further comprising an axial hole passing through the first surface and the second surface, the rotation axis of the magnetic steel member drilled in the axial hole and rotating within the axial hole. The at least one longitudinal limiter is distributed across the body from one side to the other in the lateral direction, the longitudinal limiter includes two longitudinal limit posts arranged opposite to each other along the longitudinal direction, the longitudinal limit post protruding from the first surface toward the second surface, the two longitudinal limit posts sandwiching the yoke and non-gap-fitting with the yoke in the longitudinal direction, and the at least one lateral limit structure is located on the body, the lateral limit structure non-gap-fitting with the lateral fitting structure in the lateral direction, the lateral direction being perpendicular to the longitudinal direction.

[0013] In some embodiments of the present invention, the lateral fitting structure includes a mounting hole provided in the base, and the lateral limit structure includes a lateral limiter located on one side of the body along the longitudinal direction, the lateral limiter protruding from the first surface in a direction away from the second surface, the lateral limiter inserted into the mounting hole and non-gap-fitting with the mounting hole in the lateral direction.

[0014] In some embodiments of the present invention, the lateral fitting structure includes a protrusion located on the yoke, the protrusion protruding toward the fixed frame, the lateral limit structure including a lateral limit hole penetrating the first surface and the second surface, the lateral limit hole adjacent to the vertical limiter, and the lateral limit hole non-gap-fitting with the protrusion in the lateral direction.

[0015] From the above technical solutions, it can be seen that the present invention has at least one of the following advantages and positive effects:

[0016] In an embodiment of the present invention, at least one longitudinal limiter is provided, which includes two longitudinal limiting posts, which can be clamped by the yoke in the longitudinal direction and have no gap between them in the longitudinal direction, i.e., the longitudinal limiter positions the fixed frame in the longitudinal direction and has a lateral movement margin. At least one lateral limiting structure is provided, which can have no gap between the lateral engagement structure of the magnetic hold relay in the lateral direction, i.e., the lateral limiting structure positions the fixed frame in the lateral direction and has a lateral movement margin, thereby ensuring flexible adjustment and accurate positioning of the fixed frame, avoiding stress between the magnetic steel rotating shaft and the shaft hole of the fixed frame, ensuring smooth rotation of the rotating shaft to move the armature, ensuring good overlap connection between the armature and the yoke, and improving the electrical performance of the magnetic hold relay. [Brief explanation of the drawings]

[0017] These and other features and advantages of the present invention will become more apparent from the detailed description of illustrative embodiments thereof, taken in conjunction with the drawings. [Figure 1] 1 is a perspective structural schematic diagram of a fixing frame shown in some embodiments of the present invention. FIG. [Figure 2] FIG. 2 is a schematic plan view of a fixed frame shown in some embodiments of the present invention. [Figure 3]1 is a perspective structural schematic diagram of a fixing frame shown in some embodiments of the present invention. FIG. [Figure 4] FIG. 2 is a front view of a stationary frame according to some embodiments of the present invention. [Figure 5] FIG. 10 is a front view of a fixed frame according to some other embodiments of the present invention. [Figure 6] FIG. 10 is a front view of a fixed frame according to some other embodiments of the present invention. [Figure 7] 1 is a perspective structural schematic diagram of a magnetic retention relay (excluding a fixed frame) shown in some embodiments of the present invention. FIG. [Figure 8] 1 is a front view of a magnetic retention relay according to some embodiments of the present invention; [Figure 9] FIG. 9 is a cross-sectional view taken along the line AA in FIG. 8. [Figure 10] FIG. 10 is an enlarged view of a portion D in FIG. 9. [Figure 11] FIG. 9 is a cross-sectional view taken along the line BB in FIG. 8. [Figure 12] FIG. 12 is an enlarged view of a portion E in FIG. [Figure 13] FIG. 9 is a cross-sectional view taken along the line CC in FIG. 8. [Figure 14] FIG. 14 is an enlarged view of a portion F in FIG. [Figure 15] FIG. 10 is a front view of a fixed frame according to some other embodiments of the present invention. [Figure 16] 10A and 10B are schematic plan views of a fixing frame shown in some other embodiments of the present invention. [Figure 17] 5A to 5C are schematic diagrams of protrusions provided on a yoke shown in other embodiments of the present invention. [Explanation of symbols]

[0018] 100, fixed frame; 1, main body; 11, first surface; 12, second surface; 13, shaft hole; 14, horizontal limit hole; 15, adhesive drip hole; 101, horizontal portion; 102, vertical portion; 2, vertical limiter; 21, vertical limit column; 3, horizontal limiter; 31, guide groove; 200, base; 201, mounting hole; 300, magnetic steel; 301, rotating shaft; 400, yoke; 401, protrusion; 500, armature; 600, swing arm; 700, push card; 800, movable contact assembly; 900, coil assembly; 901, coil bobbin; 902, coil; X, horizontal direction; Y, vertical direction. DETAILED DESCRIPTION OF THE INVENTION

[0019] Next, exemplary embodiments will be described in more detail with reference to the drawings. However, exemplary embodiments can be implemented in various forms and should not be understood as being limited to the embodiments described herein. Rather, these embodiments are provided so that the present invention will be thorough and complete and will fully convey the concept of exemplary embodiments to those skilled in the art. Since the same reference numerals in the drawings represent the same or similar structures, detailed descriptions will be omitted.

[0020] To facilitate explanation, the structure of the magnetic hold relay will be briefly described first. Fig. 7 shows a schematic perspective view of the magnetic hold relay. The magnetic hold relay includes a base 200, a coil assembly 900 mounted on the base 200, a yoke 400, an armature 500, a magnetic steel 300 (permanent magnet), a push card 700, and a movable contact assembly 800.

[0021] Here, the coil assembly 900 includes an iron core (not shown), a coil bobbin 901, and a coil 902. The coil 902 is wound around the outer periphery of the coil bobbin 901, and the iron core is disposed within the coil bobbin 901. The yoke 400 is fixedly mounted on the base 200. There are two yokes 400, each located at either end of the coil bobbin 901 and in contact with the iron core. The magnetic steel 300 is located on one side of the coil assembly 900. The magnetic steel 300 has a rotating shaft 301. One end of the rotating shaft 301 is inserted into a shaft hole (not shown) on the base 200, and the other end is inserted into a shaft hole 13 on the fixed frame 100 (see FIG. 8), so that the rotating shaft 301 can rotate within the two shaft holes. Armatures 500 are connected to both sides of the magnetic steel 300. Swing arms 600 are also provided on both sides of the magnetic steel 300, and the swing arms 600 can be fitted with push cards 700 located on both sides.

[0022] When a forward pulse voltage is applied to coil 902, the rotating shaft 301 of magnetic steel 300 rotates, causing magnetic steel 300 to swing to one side and armature 500 to swing. This causes armature 500 to overlap with yoke 400 on one side, forming a complete magnetic field. At the same time, magnetic steel 300 swings swing arm 600, which in turn moves push card 700, which in turn pushes and moves the movable contact piece of movable contact assembly 800. As a result, the movable contact and fixed contact of movable contact assembly 800 come into contact, closing the relay and turning on the external circuit. After coil 902 is powered off, magnetic steel 300 can maintain this magnetic field, i.e., it can maintain the position of swing arm 600 and further maintain contact between the movable contact and the fixed contact.

[0023] When a reverse pulse voltage is applied to the coil 902, the rotating shaft 301 of the magnetic steel 300 rotates in the opposite direction, causing the magnetic steel 300 to swing to the other side and the armature 500 to swing to the other side. The armature 500 is separated from the yoke 400, which was originally connected to it, and then connected to the yoke 400, forming a new complete magnetic field. At the same time, the magnetic steel 300 swings the swing arm 600, which in turn moves the push card 700 in the opposite direction. This causes the push card 700 to pull the movable contact piece of the movable contactor assembly 800, separating the movable contact from the fixed contact of the movable contactor assembly 800. This separates the movable contact from the fixed contact, opening the relay and turning off the external circuit. After the power supply to the coil 902 is cut off, the magnetic steel 300 can maintain this magnetic field, i.e., it can maintain the position of the swing arm 600, and it can also maintain the separation between the movable contact and the fixed contact.

[0024] To ensure stable attachment of magnetic steel 300 to base 200, magnetic steel 300 must be fixed by fixed frame 100. Fixed frame 100 is provided with connecting posts, and base 200 is provided with mounting holes corresponding to the connecting posts. Magnetic steel 300 can be fixed simply by inserting the connecting posts of fixed frame 100 into the corresponding mounting holes. However, research has revealed that the relatively complex structure of the base 200 may result in uneven injection molding during the manufacturing process of the base 200, which may result in slight deviations in the size, shape, or position of the mounting holes on the base 200, preventing the connecting posts of the fixed frame 100 from being inserted perpendicularly and accurately into the mounting holes. This may result in misalignment of the fixed frame 100 after the connecting posts are inserted into the mounting holes. This may cause stress between the shaft hole 13 of the fixed frame 100 and the rotating shaft 301 of the magnetic steel 300, affecting the normal rotation of the rotating shaft 301 and the oscillation of the armature 500. This may result in poor or unstable lap connection between the armature 500 and the yoke 400, which may affect the formation of the magnetic field and ultimately the electrical performance of the relay. This may also affect the oscillation of the swing arm 600 of the magnetic steel 300, preventing the push card 700 from accurately pressing the movable contact, which may affect the closing and opening of the relay. Based on this, as shown in FIGS. 1 to 3, an embodiment of the present invention provides a fixed frame 100 including a main body 1, at least one vertical limiter 2, and at least one horizontal limit structure.

[0025] Here, as shown in Figures 2 and 7, the main body 1 has opposing first and second surfaces 11 and 12, and as shown in Figure 3, the main body 1 further has an axial hole 13 penetrating the first and second surfaces 11 and 12, and the axial hole 13 is arranged to mount a rotating shaft 301 of magnetic steel 300 so that the rotating shaft 301 can rotate within the axial hole 13. In some embodiments, as shown in FIG. 1 , the main body 1 is T-shaped and includes a horizontal portion 101 extending along a horizontal direction X and a vertical portion 102 (separated by a dashed line in FIG. 1 ) extending along a vertical direction Y, the vertical portion 102 extending from the center of the horizontal portion 101 along the vertical direction Y, the vertical limiter 2 being located in the horizontal portion 101, and the horizontal limiter 3 being located in the vertical portion 102.

[0026] The horizontal direction X can be understood as the extension direction of the horizontal portion of the T-shape, and the vertical direction Y can be understood as the extension direction of the vertical portion of the T-shape. The horizontal direction X is perpendicular to the vertical direction Y. Here, the terms "horizontal direction" and "vertical direction" are used simply to facilitate the explanation of the structure of the fixed frame 100 and are not limiting. Although the main body 1 is T-shaped, strictly speaking it is not T-shaped; as shown in Figures 3 to 6, it is sufficient if the outline of the main body 1 is approximately T-shaped.

[0027] 1 and 4 to 6, in some embodiments, the longitudinal limiters 2 are distributed from one side to the other in the lateral direction X of the main body 1. The longitudinal limiters 2 include two longitudinal limit posts 21 arranged opposite to each other along the longitudinal direction Y, and the longitudinal limit posts 21 protrude from the first surface 11 in a direction away from the second surface 12. The two longitudinal limit posts 21 are arranged to be clamped by the yoke 400 of the magnetic hold relay, and are in a non-gap fit with the yoke 400 in the longitudinal direction Y. In the embodiments of the present disclosure, a non-gap fit refers to an interference fit or a zero-gap fit.

[0028] In some embodiments, the number of the longitudinal limiter 2 is one, and it is provided on one side of the main body 1 in the lateral direction X. The longitudinal limiter 2 can be non-gap-fitted with the yoke 400 in the longitudinal direction Y, so that one longitudinal limiter 2 can be provided, and the longitudinal limiter 2 can be clamped to the yoke 400 of the magnetic holding relay, ensuring the positioning of the fixed frame 100 in the longitudinal direction Y.

[0029] In some embodiments, as shown in FIG. 1, the number of longitudinal limiters 2 is two, and they are located on opposite sides of the main body 1, facing each other along the transverse direction X. As shown in FIG. 9, the two longitudinal limiters 2 are configured to be clamped between two oppositely arranged yokes 400 of the magnetic holding relay, and are non-gap-fit ​​with the yokes 400 in the longitudinal direction Y.

[0030] Because the magnetic hold relay has two opposing yokes 400 located at both ends of the coil bobbin 901, the number of vertical limiters 2 can be set to two, making full use of the two yokes 400. The vertical limiters 2 are sandwiched between the yokes 400 in the vertical direction Y while maintaining a non-gap fit, allowing the fixed frame 100 to be positioned in the vertical direction Y. At the same time, the vertical limiters 2 are not directly attached to the base 200 but to the yoke 400, which avoids installation variations due to the base 200 and ensures the vertical and accurate installation of the fixed frame 100. Since there is no stress between the shaft hole 13 and the rotation axis 301 of the magnetic steel 300, the oscillation of the armature 500 becomes more uniform, and the lap connection between the armature 500 and the yoke 400 is good, improving the electrical performance of the magnetic hold relay.

[0031] In some embodiments, as shown in FIGS. 1 and 4, in each vertical limiter 2, the opposing surfaces of the two vertical limit posts 21 have arcuate convex surfaces, and the arcuate convex surface of one vertical limit post 21 protrudes toward the other vertical limit post 21, allowing the two vertical limit posts 21 to be tightly fitted with the yoke 400 when clamping the yoke 400.

[0032] In some embodiments, as shown in FIG. 5 , in each vertical limiter 2, the opposing surfaces of the two vertical limit posts 21 are flat, so that when the two vertical limit posts 21 clamp the yoke 400, they can be fitted with the yoke 400 with zero clearance or tight fit. The flat surfaces increase the contact area between the vertical limit posts 21 and the yoke 400, allowing the vertical limit posts 21 to clamp the yoke 400 more firmly.

[0033] 6, there are two vertical limiters 2. In one limiter 2, the opposing surfaces of the two vertical limit posts 21 have arcuate convex surfaces, and the arcuate convex surface of one vertical limit post 21 protrudes toward the other vertical limit post 21, allowing for an interference fit with the yoke 400 when the two vertical limit posts 21 clamp the yoke 400. In the other limiter 2, the opposing surfaces of the two vertical limit posts 21 are flat, allowing for a zero-gap fit or an interference fit with the yoke 400 when the two vertical limit posts 21 clamp the yoke 400. The flat surfaces increase the contact area between the vertical limit posts 21 and the yoke 400, allowing the vertical limit posts 21 to clamp the yoke 400 more firmly.

[0034] In some embodiments, in each vertical limiter 2, the opposing surfaces of the two vertical limit posts 21 of one vertical limit post 21 have an arc-shaped convex surface, and the surface of the other vertical limit post 21 is flat, so that the vertical limiter 2 is tightly fitted with the yoke 400, the contact area is increased, and the clamping is more stable.

[0035] In some embodiments, bumps are provided at the locations where the yoke 400 is clamped, allowing the yoke 400 to have an interference or zero-gap fit with the longitudinal limiter 2, which may be any of the above embodiments. In some embodiments, as shown in Figures 1 to 3, the lateral fitting structure may be a mounting hole 201 in the base 200 of the magnetic hold relay, and the lateral limit structure includes a lateral limiter 3 located on one side of the body 1 along the longitudinal direction Y. The lateral limiter 3 protrudes from the first surface 11 in a direction away from the second surface 12, and as shown in Figures 7 to 11, the lateral limiter 3 is positioned so that it can be inserted into the mounting hole 201 in the base 200 of the magnetic hold relay, and is non-gap-fit ​​with the mounting hole 201 in the lateral direction X. In some embodiments, the lateral limiter 3 may be a cylinder. The diameter of the cylinder is equal to or slightly larger than the dimension of the mounting hole 201 in the base 200 along the lateral direction X, thereby achieving a non-gap fit between the lateral limiter 3 and the mounting hole 201 in the lateral direction X.

[0036] In some embodiments, the number of lateral limiters 3 is one, that is, the base 200 has one mounting hole 201 corresponding to the lateral limiter 3, which can realize the positioning of the fixed frame 100 in the lateral direction X. In some embodiments, the number of lateral limiters 3 is plural, and the lateral limiters 3 are provided on one side of the main body 1 in the vertical direction Y and arranged along the horizontal direction X. The number of the lateral limiters 3 is configured to be equal to or less than the number of mounting holes 201 in the base 200 of the magnetic hold relay.

[0037] 1 may have two horizontal limiters 3, with two horizontal limiters 3 provided on one side of the main body 1 in the vertical direction Y away from the horizontal portion 101, and two horizontal limiters 3 provided on the vertical portion 102 of the main body 1. The two horizontal limiters 3 are then provided on both sides of the vertical portion 102 in the horizontal direction X. As shown in FIG. 7, the base 200 of the magnetic holding relay is provided with two mounting holes 201 corresponding to the two horizontal limiters 3, which makes the positioning of the fixed frame 100 in the vertical direction Y more stable.

[0038] In some embodiments, as shown in FIG. 10, the dimension of the lateral limiter 3 along the vertical direction Y is configured to be smaller than the dimension of the mounting hole 201 of the base 200 along the vertical direction Y.

[0039] Specifically, when the lateral limiter 3 is a cylinder, the diameter of the cylinder is smaller than the dimension of the mounting hole 201 along the longitudinal direction Y, and thus the lateral limiter 3 has room to move in the longitudinal direction Y.

[0040] In this embodiment of the present invention, the vertical limiter 2 positions the fixed frame 100 in the vertical direction Y while allowing for movement in the horizontal direction X, and the horizontal limiter 3 positions the fixed frame 100 in the horizontal direction X while allowing for movement in the vertical direction Y. Therefore, the fixed frame 100 of the present invention can be flexibly adjusted during installation and accurately positioned, avoiding installation variations caused by the base 200 and allowing the rotating shaft 301 of the magnetic hold relay to rotate smoothly. In addition, as shown in Figures 13 and 14, the vertical limiter 2 can be clamped to the yoke 400, eliminating the need to provide a corresponding mounting hole 201 or mounting fixture in the base 200, simplifying the structure of the base 200 and improving manufacturing efficiency.

[0041] In some embodiments, as shown in Figures 1 and 3, the main body 1 further has a lateral limit hole 14 and an adhesive drip port 15 penetrating the first surface 11 and the second surface 12, respectively, with the lateral limit hole 14 adjacent to the vertical limiter 2 and the adhesive drip port 15 adjacent to the lateral limiter 3.

[0042] As shown in FIG. 1 , in this embodiment, the lateral limit hole 14 does not have a limiting function and may be referred to as a shrinkage prevention hole. It is located on one side of the vertical limiter 2, which is one horizontal side of the vertical limiter 2, and the lateral limit hole 14 corresponds to the midpoint between two vertical limit posts 21. When the vertical limiter 2 is clamped by the yoke 400, the lateral limit hole 14 prevents deformation of the main body 1 of the fixing frame 100 and relieves stress caused by slight deformation of the main body 1, thereby more firmly fixing the fixing frame 100. The lateral limit hole 14 may be square or rectangular in shape.

[0043] Continuing to refer to FIG. 1, the adhesive drip port 15 is located on one side of the lateral limiter 3, and a guide groove 31 is opened in the pillar of the lateral limiter 3, one end of the guide groove 31 communicates with the adhesive drip port 15 and the guide groove 31 extends from the lower end to the upper end of the lateral limiter 3. When adhesive is dripped from the adhesive drip port 15, the adhesive is guided by the guide groove 31 and flows into the mounting hole 201 of the base 200 of the magnetic holding relay, and the lateral limiter 3 is fixed and mounted in the mounting hole 201.

[0044] 15 to 17, different from the above embodiments, the lateral fitting structure of the magnetic retention relay includes a protrusion 401 located on the yoke 400, and when the fixed frame 100 is attached to the magnetic retention relay, the protrusion 401 protrudes toward the fixed frame 100. The lateral limit structure of the fixed frame 100 includes a lateral limit hole 14 penetrating the first surface 11 and the second surface 12 of the body 1, the lateral limit hole 14 is adjacent to the vertical limiter 2, and the lateral limit hole 14 is arranged to have no gap fitting with the protrusion 401 of the yoke 400 in the lateral direction X.

[0045] Specifically, the lateral limit holes 14 may be the lateral limit holes 14 described in the above embodiments, but in this case, the lateral limit holes 14 serve to restrict the position of the fixed frame 100 in the lateral direction X. The yoke 400 has a protrusion 401, and as shown in FIGS. 8 and 17, when the fixed frame 100 is attached to the magnetic retention relay, the protrusion 401 protrudes from the yoke 400 toward the fixed frame 100 (when viewed from the perspective of FIGS. 8 and 17, it protrudes in a direction perpendicular to the paper), and corresponds to the lateral limit hole 14 of the fixed frame 100. The protrusion 401 is not gap-fitted with the lateral limit hole 14 in the lateral direction X, and the protrusion 401 has a movement margin between itself and the side wall of the lateral limit hole 14 in the vertical direction Y. As a result, the protrusion 401 and the lateral limit hole 14 only restrict the position of the fixed frame 100 in the lateral direction X.

[0046] 15 and 16, the fixed frame 100 can omit the lateral limiters 3 in the above embodiments, thereby simplifying the structure of the fixed frame 100, simplifying the manufacturing process, and saving costs. Of course, the fixed frame 100 may retain the lateral limiters 3 and insert them into the mounting holes 201 of the base 200.

[0047] In summary, the fixed frame 100 of the embodiment of the present invention is provided with at least one longitudinal limiter 2, which includes two longitudinal limit posts 21, which can be clamped by the yoke 400 in the longitudinal direction Y and have a non-gap fit with the yoke 400 in the longitudinal direction Y, i.e., the longitudinal limiter 2 positions the fixed frame 100 in the longitudinal direction Y and allows movement in the lateral direction X. At least one lateral limit structure is provided, which can include a lateral limiter 3, which can be inserted into the mounting hole 201 of the base 200 of the magnetic holding relay and can have a non-gap fit with the mounting hole 201 in the lateral direction X, and which can include a lateral limit hole 14, which can have a non-gap fit with the protrusion 401 of the yoke 400 in the lateral direction X, i.e., the lateral limiter 3 can position the fixed frame 100 in the lateral direction X. Since the fixed frame 100 is positioned and has movement margin in the vertical direction Y, flexible adjustment and accurate positioning of the fixed frame 100 can be ensured. When the fixed frame 100 is attached to the base 200 of the magnetic hold relay, stress is avoided between the rotating shaft 301 of the magnetic steel 300 and the shaft hole 13 of the fixed frame 100, ensuring that the rotating shaft 301 can rotate smoothly to move the armature 500. This ensures a good overlap connection between the armature 500 and the yoke 400, and improves the electrical performance of the magnetic hold relay.

[0048] As shown in FIGS. 7 to 14, an embodiment of the present invention further provides a magnetic retention relay including a base 200, a magnetic steel 300, two yokes 400, a lateral mating structure, and a fixed frame 100 as described in any of the above embodiments.

[0049] As shown in Figure 7, the magnetic steel 300 is attached to the base 200, and has a rotation axis 301. Two yokes 400 are fixedly mounted on the base 200 and located on opposite sides of the magnetic steel 300. A lateral engagement structure is provided on the yoke 400. The fixed frame 100 includes a main body 1, at least one longitudinal limiter 2, and at least one lateral limit structure.

[0050] Here, the main body 1 has opposing first and second surfaces 11 and 12, and further has an axial hole 13 penetrating the first and second surfaces 11 and 12, and a rotating shaft 301 of magnetic steel 300 is drilled in the axial hole 13 and is rotatable within the axial hole 13.

[0051] As shown in FIG. 1, the longitudinal limiters 2 are distributed from one side to the other side of the body 1, and the one side and the other side face each other along the transverse direction X. The longitudinal limiters 2 include two longitudinal limit posts 21 arranged opposite each other along the longitudinal direction Y, and the longitudinal limit posts 21 protrude from the first surface 11 in a direction away from the second surface 12. As shown in FIGS. 13 and 14, the two longitudinal limit posts 21 sandwich the yoke 400 and are non-gap-fit ​​with the yoke 400 in the longitudinal direction Y.

[0052] In some embodiments, as shown in FIG. 1, the number of vertical limiters 2 is two, and they are sandwiched between two oppositely arranged yokes 400, respectively, and are non-gap-fit ​​with the yokes 400 in the vertical direction Y, and the fixed frame 100 is positioned in the vertical direction Y, as shown in FIG. 14.

[0053] The lateral limit structure is provided on the main body and is non-gap-fit ​​with the lateral fitting structure of the magnetic hold relay in the lateral direction X.

[0054] Here, the lateral fitting structure includes a mounting hole 201 provided in the base 200, and the lateral limit structure includes a lateral limiter 3, which is located on one side of the body 1 in the longitudinal direction Y and protrudes from the first surface 11 away from the second surface 12. The lateral limiter 3 is inserted into the mounting hole 201 of the base 200 and is non-gap-fitted with the mounting hole 201 in the lateral direction X, thereby positioning the fixed frame 100 in the lateral direction X, as shown in Figures 11 and 12.

[0055] 9 and 10, there is a gap between the lateral limiter 3 and the mounting hole 201 in the vertical direction Y. In other words, the lateral limiter 3 has a movement margin in the vertical direction Y of the mounting hole 201.

[0056] In some other embodiments, as shown in Figures 15 to 17, the lateral fitting structure includes a protrusion 401 provided on a yoke 400, and the protrusion 401 protrudes toward the fixed frame 100. The lateral limit structure includes a lateral limit hole 14 penetrating the first surface 11 and the second surface 12, the lateral limit hole 14 is adjacent to the vertical limiter 2, and the lateral limit hole 14 is non-gap-fit ​​with the protrusion 401 in the lateral direction X.

[0057] For other specific structures of the fixed frame 100, reference can be made to the description of any embodiment of the fixed frame 100, and no further description will be given here. The magnetic retention relay may also include an armature 500, which can be injection molded integrally with the magnetic steel 300, protruding from both sides of the magnetic steel 300, moving together with the rotation axis 301 of the magnetic steel 300, and can be overlap-connected with the yoke 400. Here, the integral injection molding of the armature 500 and the magnetic steel 300 refers to assembling the armature 500 and the magnetic steel 300, and then injecting a polymer such as plastic through an injection process to firmly connect them together.

[0058] In the magnetic hold relay according to the embodiment of the present invention, the longitudinal limiter 2 of the fixed frame 100 positions the fixed frame 100 in the longitudinal direction Y, with some movement allowance in the lateral direction X. The lateral limit structure positions the fixed frame 100 in the lateral direction X, with some movement allowance in the longitudinal direction Y. This ensures flexible adjustment and accurate positioning of the fixed frame 100, avoids stress between the rotating shaft 301 of the magnetic steel 300 and the shaft hole 13 of the fixed frame 100, ensures that the rotating shaft 301 rotates smoothly and moves the armature 500, and ensures good overlap connection between the armature 500 and the yoke 400, improving the electrical performance of the relay.

[0059] It should be understood that the various examples / embodiments provided by the present invention can be combined with each other without contradiction, and examples will not be listed one by one here.

[0060] In the embodiments of the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. The term "plurality" means two or more unless otherwise limited. Terms such as "attached," "contact," "connected," and "fixed" should be understood broadly. For example, "connected" may mean a fixed connection, a detachable connection, or an integral connection. "Contacted" may mean a direct connection or an indirect connection via an intermediate medium. The specific meanings of the above terms in the embodiments of the present invention can be understood by those skilled in the art depending on the specific circumstances.

[0061] In describing the embodiments of the present invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "left," "right," "front," and "rear" are orientations or positional relationships based on the drawings and are intended merely to facilitate the description and simplification of the embodiments of the present invention, and do not indicate or imply that the indicated device or unit is required to have a particular orientation or be configured and operate in a particular orientation, and therefore should not be understood as limitations on the embodiments of the invention. In the description herein, the terms "one embodiment," "some embodiments," "particular embodiment," etc., mean that the particular feature, structure, material, or characteristic described in connection with this embodiment or example is included in at least one embodiment or example of the invention. In this specification, general references to the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0062] The above is only a preferred embodiment of the invention, and is not used to limit the invention, and those skilled in the art can make various modifications and changes to the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the invention should be included in the protection scope of the invention.

Claims

1. A fixing frame for fixing at least the magnetic steel of the magnetic holding relay, a body, at least two longitudinal limiters, and at least one lateral limit structure; the body has a first surface and a second surface facing each other, and further has a shaft hole passing through the first surface and the second surface, the shaft hole mounting the rotating shaft of the magnetic steel so that the rotating shaft can rotate within the shaft hole; At least two of the longitudinal limiters are distributed across the body from one side to the other in the lateral direction, and each of the longitudinal limiters includes two longitudinal limit posts arranged opposite to each other along the longitudinal direction, the longitudinal limit posts protruding from the first surface and spaced apart from the second surface, the two longitudinal limit posts being arranged to be clamped by a yoke of the magnetic holding relay and non-gap-fit ​​with the yoke in the longitudinal direction; At least one of the lateral limit structures is located on the body, and the lateral limit structure can be non-gap-fit ​​with a lateral fitting structure of the magnetic hold relay in the lateral direction; The horizontal direction is perpendicular to the vertical direction. A fixed frame characterized by:

2. The lateral fitting structure includes a mounting hole in a base of the magnetic holding relay, and the lateral limit structure includes a lateral limiter, the lateral limiter being located on one side along the longitudinal direction of the body, the lateral limiter protruding from the first surface and spaced apart from the second surface, and the lateral limiter being configured to be insertable into the mounting hole and to have a non-gap fit with the mounting hole in the lateral direction.

2. The stationary frame according to claim 1.

3. The lateral engagement structure includes a protrusion located on the yoke of the magnetic hold relay, and when the fixed frame is attached to the magnetic hold relay, the protrusion protrudes toward the fixed frame. The lateral limit structure includes a lateral limit hole penetrating the first surface and the second surface, the lateral limit hole being adjacent to the vertical limiter, and the lateral limit hole being configured to have a non-gap engagement with the protrusion in the lateral direction.

2. The stationary frame according to claim 1.

4. The number of the longitudinal limiters is two, and they are located on opposite sides distributed along the transverse direction of the main body. The two longitudinal limiters can be sandwiched between the two oppositely arranged yokes of the magnetic holding relay and are configured to have no gap fit with the yokes in the longitudinal direction.

2. The stationary frame according to claim 1.

5. The number of the lateral limiters is plural, the plural lateral limiters are provided on one side of the main body in the vertical direction, the plural lateral limiters are arranged along the horizontal direction, and the number of the plural lateral limiters is configured to be equal to or less than the number of the mounting holes in the base of the magnetic holding relay.

3. The stationary frame according to claim 2.

6. The dimension of the lateral limiter along the vertical direction is configured to be smaller than the dimension of the mounting hole of the base along the vertical direction.

3. The stationary frame according to claim 2.

7. The body further has a lateral limit hole and an adhesive drip port that penetrate the first surface and the second surface, respectively, the lateral limit hole adjacent to the vertical limiter, and the adhesive drip port adjacent to the lateral limiter.

3. The stationary frame according to claim 2.

8. the main body is T-shaped and includes a horizontal portion extending along the horizontal direction and a vertical portion extending along the vertical direction, the vertical portion extending along the vertical direction from a center portion of the horizontal portion; The vertical limiter is located on the horizontal portion, and the horizontal limiter is located on the vertical portion.

3. The stationary frame according to claim 2.

9. With the base, a magnetic steel member attached to the base and having a rotation axis; two yokes fixedly mounted on the base and positioned on opposite sides of the magnetic steel; A lateral interlocking structure; a fixed frame; The fixed frame comprises a body, at least two vertical limiters, and at least one lateral limit structure; the main body has a first surface and a second surface facing each other, and further has an axial hole penetrating the first surface and the second surface, the rotating shaft of the magnetic steel is drilled in the axial hole and can rotate within the axial hole; At least two of the longitudinal limiters are distributed across the body from one side to the other in the lateral direction, and each of the longitudinal limiters includes two longitudinal limit posts arranged opposite to each other along the longitudinal direction, the longitudinal limit posts protruding from the first surface and spaced apart from the second surface, the two longitudinal limit posts sandwiching the yoke and non-gap-fitting with the yoke in the longitudinal direction; at least one lateral limit structure is located on the body, the lateral limit structure being in non-gap engagement with the lateral engagement structure in the lateral direction; The horizontal direction is perpendicular to the vertical direction.

1. A magnetic holding relay.

10. The lateral fitting structure includes a mounting hole provided in the base, and the lateral limit structure includes a lateral limiter located on one side of the body along the longitudinal direction, the lateral limiter protruding from the first surface and spaced apart from the second surface, the lateral limiter inserted into the mounting hole and non-gap-fit ​​with the mounting hole in the lateral direction.

10. The magnetic holding relay according to claim 9.

11. The lateral engagement structure includes a protrusion located on the yoke, the protrusion protruding toward the fixed frame; The lateral limit structure includes a lateral limit hole penetrating the first surface and the second surface, the lateral limit hole being adjacent to the vertical limiter, and the lateral limit hole having a non-gap fit with the protrusion in the lateral direction.

10. The magnetic holding relay according to claim 9.

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