Magnetic latching relay

Abstract

Provided in the present disclosure is a magnetic latching relay, comprising a housing, and a magnetic circuit portion and a fixing frame which are arranged in the housing, wherein the magnetic circuit portion comprises an armature assembly and yokes located on two sides of the armature assembly; the fixing frame comprises a main body and two clamping sets, each clamping set comprising two clamping posts spaced apart from each other, the two clamping sets respectively corresponding to the yokes on the two sides, and the two clamping posts clamping the corresponding yoke to form an interference fit; the armature assembly is rotatably mounted between the housing and the main body of the fixing frame; and in one clamping set, a reinforcing portion is provided on at least the side of one of the clamping posts facing the other clamping post, and the reinforcing portion is arranged at the connection between the clamping post and a first surface of the main body. The magnetic latching relay can effectively enhance the strength of each clamping post and the clamping strength of the clamping posts on the yokes, thereby enhancing the stability of clamping the yokes by means of the clamping sets.

Description

A magnetic latching relay

[0001] The present disclosure claims priority to Chinese Patent Application No. 202410642984.7, filed on May 22, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the field of magnetic latching relays, and in particular to a magnetic latching relay with a fixed frame. BACKGROUND

[0003] A magnetic latching relay is an automatic switch that plays a role in turning on and off the circuit. The magnetic latching relay generally includes a shell and a magnetic circuit part and a contact part arranged in the shell. The magnetic circuit part includes a coil, a yoke and an armature assembly, etc. The armature assembly is rotatably arranged and connected to the moving spring of the contact part through a push card. The coil generates a magnetic field after being energized. The armature assembly rotates under the action of the magnetic field, and then drives the moving spring to act through the push card, thereby realizing the closing or opening of the contact part.

[0004] In the prior art, the armature assembly is generally rotatably assembled between the base of the shell and a fixed frame. The fixed frame is fixed by being inserted into the base and clamped on the yoke. With the fixation of the fixed frame, the position of the fixed frame relative to the yoke can be fixed, and at the same time, the rotation axis for the rotation installation of the armature assembly is also determined, so that the armature assembly can stably rotate after installation. In addition, the armature assembly can be closed with the two yokes at the same time when it rotates to two positions.

[0005] Among them, the fixed frame clamps the yoke through two clamping columns. When clamping, the clamping column is in interference fit with the yoke, and the root is under great stress, which is prone to cracks or fractures that affect the strength. Due to the limited space inside the relay, it is difficult to increase the volume of the clamping column to improve the strength. In addition, when the clamping column is in interference fit with the yoke, the clamping column needs to have a certain deformation ability, and rigidity and deformation ability are a pair of contradictory relations. If the volume of the clamping column is simply increased to improve the structural strength, the deformation ability of the clamping column will be weakened, and it will be difficult to assemble with the yoke. Therefore, how to make the clamping column meet the requirements of high strength and deformation ability at the same time is a problem to be solved. SUMMARY

[0006] The present disclosure provides a magnetic latching relay to effectively enhance the strength of the clamping column itself and the clamping strength of the clamping column on the yoke, and enhance the stability of the clamping group clamping the yoke.

[0007] To achieve the above-mentioned purpose, the technical scheme provided by the embodiments of the present disclosure is as follows:

[0008] The magnetic latching relay of the present disclosure comprises a housing, a magnetic circuit part and a fixing frame arranged in the housing, the magnetic circuit part has an armature assembly and yoke irons on both sides of the armature assembly, the fixing frame comprises a main body and two sets of clamping groups protruding from a first surface of the main body, each set of the clamping groups comprises two clamping columns arranged at intervals, and the two sets of the clamping groups correspond to the yoke irons on both sides respectively and clamp the corresponding yoke irons through the two clamping columns to form an interference fit; the armature assembly is rotatably assembled between the housing and the main body of the fixing frame; characterized in that: in the same clamping group, the clamping column is provided with a reinforcing portion at least on the side facing the other clamping column in the same group, and the reinforcing portion is arranged at the connection between the clamping column and the first surface of the main body.

[0009] According to some embodiments of the present disclosure, the yoke iron has a first yoke iron surface facing the main body, and the closest distance between the first yoke iron surface and the reinforcing portion in the direction perpendicular to the first surface is greater than or equal to 0 mm.

[0010] According to some embodiments of the present disclosure, the magnetic latching relay further comprises a limiting structure, and the first yoke iron surface abuts against the limiting structure to make the closest distance between the first yoke iron surface and the reinforcing portion greater than or equal to 0 mm.

[0011] According to some embodiments of the present disclosure, the limiting structure comprises an abutting boss arranged on the first surface of the main body, the abutting boss protrudes from the first surface by a height H1, the reinforcing portion protrudes from the first surface by a maximum height H2, and H1 and H2 satisfy: H1-H2≥0 mm.

[0012] The first yoke iron surface abuts against the abutting boss.

[0013] According to some embodiments of the present disclosure, the abutting boss is arranged in two, and the two abutting bosses correspond to the two sets of clamping groups respectively, and the two abutting bosses are arranged at the same height to be abutted by the two yoke irons respectively.

[0014] According to some embodiments of the present disclosure, the abutting boss is arranged on the side of the clamping group close to the center line of the main body, and the two ends of the abutting boss are connected to the two clamping columns in the same clamping group.

[0015] According to some embodiments of the present disclosure, the abutting boss is in a strip-shaped structure, and the extension direction of the abutting boss is the same as the arrangement direction of the two clamping columns in the same clamping group.

[0016] In the direction perpendicular to the first surface, the abutting boss has an abutting surface, and the abutting surface is in contact with the first yoke iron surface.

[0017] According to some embodiments of the present disclosure, the first surface of the main body and the surface formed by the shell are in surface-to-surface contact in a direction perpendicular to the first surface.

[0018] According to some embodiments of the present disclosure, the magnetic latching relay further comprises a relief structure disposed on the yoke, the relief structure being disposed corresponding to the reinforcing portion to avoid the reinforcing portion.

[0019] According to some embodiments of the present disclosure, the relief structure is a relief chamfer.

[0020] According to some embodiments of the present disclosure, the reinforcing portion is provided at all positions where the clamping columns and the first surface of the main body abut each other.

[0021] According to some embodiments of the present disclosure, the reinforcing portion is an R-angle reinforcing portion.

[0022] According to some embodiments of the present disclosure, the side walls of the two clamping columns of the same clamping group that are opposite to each other are both provided with clamping ribs, and the two clamping columns form an interference fit with the yoke through the two clamping ribs.

[0023] According to some embodiments of the present disclosure, the clamping ribs extend in a direction perpendicular to the first surface.

[0024] According to some embodiments of the present disclosure, the clamping ribs are provided with reinforcing portions at the connection with the first surface.

[0025] According to some embodiments of the present disclosure, the two clamping columns in the same clamping group are both provided with inclined guide surfaces, the inclined guide surfaces being disposed at the end of the clamping columns away from the main body, and the two inclined guide surfaces in the same clamping group are opposite to each other to form a guide opening.

[0026] According to some embodiments of the present disclosure, in a direction perpendicular to the first surface, the armature assembly has opposite first and second sides, the first and second sides of the armature assembly are respectively provided with shaft columns, and the armature assembly is rotatably connected with the fixed frame and the shell through the shaft columns.

[0027] The shaft column located at the first side of the armature assembly and the shaft column located at the second side of the armature assembly are coaxially arranged and have different diameters.

[0028] According to some embodiments of the present disclosure, the main body is provided with a visible window for showing the attraction contact surface of the yoke and the armature assembly.

[0029] According to some embodiments of the present disclosure, the shell is further provided with a socket, and the fixed frame further comprises a plug column perpendicularly connected to the first surface, the plug column being inserted into the socket.

[0030] According to some embodiments of the present disclosure, the insertion of the insertion post into the insertion hole enables the fixing frame to be limited in position with the base in a direction perpendicular to the arrangement direction of the two clamping posts of the clamping group.

[0031] According to some embodiments of the present disclosure, the fixing frame is an integrally injection molded structure.

[0032] The technical scheme provided by the embodiments of the present disclosure has the following beneficial effects:

[0033] 1. The clamping post is provided with a reinforcing portion on at least one side thereof facing the other clamping post in the same group, and the reinforcing portion connects the clamping post and the first surface of the main body. When the clamping post is subjected to the top resistance of the yoke, the reinforcing portion can effectively disperse the stress between the clamping post and the first surface, so as to avoid the stress from being concentrated at the root of the side of the clamping post facing the other clamping post, thereby effectively enhancing the strength of the clamping post and the clamping force of the clamping post on the yoke. In addition, when the clamping post is subjected to the top resistance of the yoke, the reinforcing portion can also enable the clamping post to absorb and buffer external force, absorb more energy, thereby allowing the clamping post to deform in a larger range, so that the clamping post is not damaged, and at the same time, the shock absorption performance of the clamping post during transportation and use can be improved, so that the performance of each clamping group clamping the yoke is more stable.

[0034] 2. After the yoke is installed in the clamping group, the yoke can be kept at a distance from the reinforcing portion by the limiting structure, or the yoke is kept at a distance from the reinforcing portion by the giving structure, that is, when the yoke is inserted into position in the corresponding clamping group, the closest distance between the yoke and the reinforcing portion in the direction perpendicular to the first surface is greater than or equal to 0, so as to avoid the yoke being completely supported by the reinforcing portion; therefore, when there is a structural difference between the two reinforcing portions corresponding to the two clamping posts in the same group, the yoke can avoid the asymmetric abutting positions on the two reinforcing portions, so as to avoid the deflection of the fixing frame and the failure of the armature assembly to be assembled with the fixing frame.

[0035] 3. The limiting structure is an abutting boss protruding from the first surface of the main body, and the height of the abutting boss protruding from the first surface is higher than or flush with the maximum height of the reinforcing portion protruding from the first surface; the yoke is abutted on the abutting boss to keep a distance from the reinforcing portion. The abutting boss is used to achieve the limiting, which is simple in structure and easy to implement.

[0036] 4. The abutting boss is a long strip structure, and the extension direction of the abutting boss is the same as the arrangement direction of the two clamping posts in the same clamping group. In the direction perpendicular to the first surface, the abutting boss has an abutting surface, and the abutting surface is in contact with the first yoke surface. In this way, the abutting area of the yoke and the abutting boss is increased, so that after the yoke is inserted into position in the corresponding two clamping posts, the fixing frame forms a rotation-stopping cooperation with the yoke, so as to prevent the fixing frame from being deflected, and thus ensure the assembly accuracy of the fixing frame.

[0037] 5. The yoke is spaced apart from the reinforcing portion by a clearance structure; the clearance structure is a clearance chamfer provided on the yoke, the clearance chamfer, the clamping column and the first surface of the main body form a clearance space, and the reinforcing portion is located in the clearance space and is spaced apart from the yoke. By providing the clearance chamfer, the yoke is spaced apart from the reinforcing portion, without the need for additional structures, making the structure simpler.

[0038] 6. The reinforcing portion is an R-angle reinforcing portion, that is, the clamping column and the first surface are connected by a circular corner surface, the R-angle reinforcing portion is compared with other shapes of reinforcing portion, which helps to distribute the stress on a larger surface, thereby more conducive to prevent the clamping column from cracking or breaking, in addition, the circular chamfer can also improve the elastic deformation ability of the clamping column, because the circular structure is easier to restore when stressed, reducing the possibility of plastic deformation.

[0039] 7. The side walls of the two clamping columns of the same clamping group are convexly provided with clamping ribs, and the two clamping columns form an interference fit with the yoke through the clamping ribs. In this way, the yoke and the clamping group are inserted and fitted. Specifically, the clamping rib has a small volume, and its toughness and deformation ability are better than that of the large volume clamping column. In this way, when the yoke is squeezed into the two clamping columns of the same group, the toughness and deformation ability of the clamping rib make it easy for the yoke to be squeezed into the two clamping columns, facilitating the installation of the fixing frame. At the same time, the clamping rib can also prevent the clamping column from deforming itself, ensuring the strength of the clamping column and improving the installation stability of the fixing frame.

[0040] 8. The two clamping columns in the same clamping group are provided with inclined guide surfaces, and the inclined guide surfaces are provided at the end of the clamping column away from the main body. The two inclined guide surfaces in the same clamping group are opposite to each other to form a guide opening for inserting the yoke. In this way, when the yoke is inserted between the two clamping columns, the inclined guide surfaces can guide the yoke, making it easier to insert the yoke into the clamping cavity.

[0041] 9. The armature assembly is provided with coaxial shaft columns with different diameters on both sides perpendicular to the first surface, and the armature assembly is rotatably assembled with the main body of the fixing frame and the inner wall of the shell through the shaft columns on both sides. Preventing the armature assembly from being installed in reverse affects the normal operation of the armature assembly, and also improves the installation efficiency.

[0042] 10. The main body is provided with a viewing window, and the viewing window is used to show the attraction contact surface of the yoke and the armature assembly, so that the operator can intuitively judge the attraction state of the yoke and the armature assembly.

[0043] 11. The shell is further provided with a socket, the fixing frame further comprises a plug column connected to the first surface vertically, the plug column is inserted into the socket of the shell, and the fixing frame is fixed in the shell through the clamping cooperation of the clamping group and the yoke and the insertion cooperation of the plug column and the socket. Realize the stable assembly of the fixing frame.

[0044] 12. After the clamping group clamps the yoke, the freedom of the fixing frame is limited in the clamping direction (i.e. the arrangement direction of the two clamping columns of the same clamping group); the insertion cooperation of the plug column and the socket makes the fixing frame and the base limited in the direction perpendicular to the line connecting the two clamping columns of the clamping group. That is, in this scheme, the clamping cooperation of the clamping group and the yoke and the insertion cooperation of the plug column and the socket respectively limit the fixing frame in two directions, which can reduce the machining precision of the fixing frame compared with the related art, while ensuring the accurate positioning and installation of the fixing frame. BRIEF DESCRIPTION OF DRAWINGS

[0045] Fig. 1 shows a schematic diagram of the fixing frame in the embodiment;

[0046] Fig. 2 shows a schematic diagram of the fixing frame in the embodiment;

[0047] Fig. 3 shows a sectional view of the fixing frame in the embodiment;

[0048] Fig. 4 shows a side view of the fixing frame in the embodiment;

[0049] Fig. 5 shows a schematic diagram of the appearance of the magnetic latching relay in the embodiment;

[0050] Fig. 6 shows a schematic diagram of the structure of the magnetic latching relay in the embodiment after hiding the cover plate;

[0051] Fig. 7 shows a schematic diagram of the partial structure of the magnetic latching relay in the embodiment;

[0052] Fig. 8 shows a sectional view of the magnetic latching relay in the embodiment along its length direction;

[0053] Fig. 9 shows an enlarged schematic diagram of area A in Fig. 8;

[0054] Fig. 10 shows a schematic diagram of the structure of the base of the shell in the embodiment;

[0055] Fig. 11 shows an enlarged schematic diagram of area B in Fig. 6;

[0056] Fig. 12 shows a sectional view of the magnetic latching relay in the embodiment along its width direction. DETAILED DESCRIPTION

[0057] For further illustration of the embodiments, the disclosure is provided with the accompanying drawings. These drawings are part of the disclosure, which mainly serve to illustrate the embodiments, and can be used to explain the operation principle of the embodiments in conjunction with the related description of the specification. Those of ordinary skill in the art should understand other possible implementations and advantages of the disclosure in conjunction with these. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0058] In the description of the disclosure, the terms "upper", "lower", "left", "right", "front", "back" and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the disclosure.

[0059] The disclosure will be further illustrated in conjunction with the drawings and specific embodiments.

[0060] Embodiment one

[0061] Referring to FIGS. 1-12, the embodiments of the disclosure provide a magnetic latching relay, which includes a shell 20 (shown in FIG. 5) and a magnetic circuit part 30, a contact part 40 and a fixing frame 10 (shown in FIG. 7) arranged in the shell 20.

[0062] Specifically, as shown in FIGS. 6-8, the magnetic circuit part 30 is of a conventional structure, which includes a coil 31, yokes 32 and an armature assembly 33, etc. The yokes 32 are two and are respectively located on both sides of the armature assembly 33. The armature assembly 33 is rotatably assembled in the shell 20 through a rotating shaft (specifically, the shaft columns 34 on both sides described below). When the coil is energized, a magnetic field is generated, which drives the armature assembly 33 to rotate under the magnetic conduction of the yokes 32. The armature assembly 33 pushes the moving spring of the contact part 40 to realize the closing or opening of the contact part 40.

[0063] Referring to FIGS. 1 and 2, the fixing frame 10 includes a main body 11 and two groups of clamping groups 12 protruding from a first surface 101 of the main body 11. Specifically, the main body 10 is of a rectangular structure, having two surfaces arranged oppositely, which are a first surface 101 and a second surface 102, and the clamping groups 12 protrude from the first surface 101 of the main body 11.

[0064] Each clamping group 12 includes two clamping posts 121 arranged at intervals, and two clamping groups 12 correspond to the yokes 32 on both sides of the armature assembly 33 respectively and clamp the corresponding yokes 32 through the two clamping posts 121. Specifically, the two clamping groups 12 are distributed on both sides of the length direction (referring to the X direction in FIG. 1) of the main body 10, and the two clamping posts 121 of each clamping group 12 are distributed along the width direction (referring to the Y direction in FIG. 1) of the main body 10, the width direction of the main body 10 is perpendicular to the length direction, and the two clamping posts 121 of the same clamping group 12 define a clamping cavity 17, the yoke 32 is accommodated in the clamping cavity 17 and is clamped by the two clamping posts 121 and forms an interference fit.

[0065] The armature assembly 33 is rotatably assembled between the shell 20 and the main body 11 of the fixed frame 10. Specifically, the main body 11 of the fixed frame 10 covers the armature assembly 33 along the height direction (referring to the Z direction in FIG. 1) of the magnetic latching relay, so that the armature assembly 33 is rotatably arranged between the fixed frame 10 and the inner wall of the shell 20. Specifically, the fixed frame 10 and the inner wall of the shell 20 are both provided with corresponding hinge shaft holes. As shown in FIG. 10, the hinge shaft hole (defined as the first hinge shaft hole 212) provided in the inner wall of the shell 20 is a blind hole, as shown in FIGS. 2 and 3, the hinge shaft hole (defined as the second hinge shaft hole 15) provided in the fixed frame 10 is a through hole, and the first hinge shaft hole 212 and the second hinge shaft hole 15 both extend along the Z direction. As shown in FIG. 8, the shaft column 34 of the armature assembly 33 is fitted into the first hinge shaft hole 212 and the second hinge shaft hole 15 respectively to realize rotatable assembly.

[0066] In the same group of two clamping columns 121, as shown in FIGS. 1-3, the clamping column 121 is provided with a reinforcing portion at least on the side facing the other clamping column 121 in the same group, and the reinforcing portion is arranged at the junction of the clamping column 121 and the first surface 101 of the main body 11. As in the present embodiment, reinforcing portions are provided at all positions where the clamping column 121 and the first surface 101 of the main body 11 are in contact with each other, to maximize the strength of the clamping column 121. The reinforcing portion is equivalent to a widening treatment of the clamping column 121 at the junction with the first surface 101 of the main body 11, and its shape is not limited, so that the width of the junction is greater than that of other positions of the clamping column 121, and the widened portion forms the reinforcing portion, increasing the mechanical strength of the clamping column 121, so that the two clamping columns 121 will not crack or break due to stress concentration under the interference clamping yoke 32, and will not fatigue fracture under long-term interference fit, thereby ensuring the stability of the fixing frame 10, and further ensuring that the armature assembly can always reliably rotate based on accurate position, and ensuring that the relay has reliable electrical performance. In addition, when the clamping column 121 is subjected to the abutment of the yoke 32, the reinforcing portion can also allow the clamping column 121 to absorb and buffer external force, absorb more energy, so that the clamping column 121 can deform in a larger range, so that the clamping column 121 is not damaged, and at the same time, the shock absorption performance of the clamping column 121 during transportation and use can be improved, so that the performance of each clamping group 12 clamping the yoke 32 is more stable.

[0067] In other embodiments, the reinforcing portion can also be provided only on the side of the clamping column 121 facing the other clamping column 121 in the same group.

[0068] In the present embodiment, the reinforcing portion is specifically an R-angle reinforcing portion 123, which is equivalent to a rounded corner structure filled between the clamping column 121 and the first surface 101 of the main body 11, i.e., the clamping column 121 and the first surface 101 are connected by a rounded corner surface. Compared with other shapes of reinforcing portions, the R-angle reinforcing portion helps to distribute stress over a larger surface, thereby more effectively preventing the clamping column 121 from cracking or breaking. In addition, the rounded corner structure can also improve the elastic deformation capability of the clamping column 121, because the rounded corner surface is more likely to recover its original shape when stressed, reducing the possibility of plastic deformation.

[0069] In other embodiments, the reinforcing portion can also be other shapes of chamfer structures, such as bevel chamfers or special-shaped chamfers.

[0070] Meanwhile, the yoke 32 is spaced apart from the reinforcing portion when being inserted into position between the corresponding two clamping columns 121. That is, the yoke 32 has a first yoke surface 321 facing the main body 11 and a second yoke surface 322 facing away from the main body 11, and the closest distance between the first yoke surface 321 and the reinforcing portion is greater than or equal to 0 mm in a direction perpendicular to the first surface (Z direction in FIG. 1).

[0071] Further, the magnetic latching relay further comprises a limiting structure, and the first yoke surface 321 abuts against the limiting structure so that the closest distance between the first yoke surface 321 and the reinforcing portion is greater than or equal to 0 mm. That is, when the yoke 32 is inserted into position in the corresponding clamping group 12, the closest distance between the yoke 32 and the reinforcing portion is greater than or equal to 0 in the direction perpendicular to the first surface (Z direction), so as to avoid that the yoke 32 is completely supported by the reinforcing portion.

[0072] Specifically, the yoke 32 is spaced apart from the R-angle reinforcing portion 123 by the limiting structure, so as to avoid that the yoke 32 directly contacts the R-angle reinforcing portion 123. In this way, in the case that the R-angle reinforcing portions 123 of the two clamping columns 121 in the same group are not symmetrical due to production errors, the fixed frame 10 will not be deflected relative to the horizontal plane because the yoke 32 abuts against the two asymmetrical R-angle reinforcing portions 123, so as to ensure that the position of the second hinge hole 15 on the fixed frame 10 is determined and not deviated, and further so as to enable the fixed frame 10 to be reliably limited on the yoke 32, so as to facilitate the installation of the armature assembly 33 and reliably support the rotation of the armature assembly 33.

[0073] Further, in the embodiment, the limiting structure is an abutting boss 13 protruding from the first surface 101 of the main body 11, the height of the abutting boss protruding from the first surface is H1, the maximum height of the reinforcing portion protruding from the first surface is H2, and H1 and H2 satisfy H1-H2≥0 mm. That is, the height H1 of the abutting boss 13 protruding from the first surface 101 is higher than or flush with the maximum height H2 of the R-angle reinforcing portion 123 protruding from the first surface 101. For example, the value of H1 can be greater than the value of H2 to ensure that the first yoke surface 321 of the yoke 32 abuts on the abutting boss 13 while maintaining a distance from all the R-angle reinforcing portions 123. Since the two clamping columns 121 in the same clamping group 12 are in an interference fit with the yoke 32, when the yoke 32 is inserted between the two clamping columns 121 of the same clamping group 12, the two clamping columns 121 will be deformed to some extent by the yoke 32, and at least one of the two clamping columns 121 in the same clamping group 12 will be tilted, causing the two clamping columns 121 in the same group to lose parallelism. This further causes the two magnetic pole surfaces of the yoke 32 to be difficult to closely fit with the two clamping columns 121, and causes the fixing frame 10 to easily swing relative to the yoke 32 in a plane perpendicular to the X direction, making it difficult to determine the position of the fixing frame 10. Therefore, as shown in FIG. 1, in the embodiment, the abutting boss 13 has a strip-shaped structure, the extension direction of the abutting boss 13 is the same as the arrangement direction (Y direction) of the two clamping columns 121 in the same clamping group 12, and in a direction (Z direction) perpendicular to the first surface 101, the abutting boss 13 has an abutting surface 131 that is in contact with the first yoke surface 321. That is, the surface of the abutting boss 13 is in close contact with the surface of the yoke 32 to form a surface contact, thereby increasing the abutting area of the yoke 32 and the abutting boss 13 and preventing the fixing frame 10 from swinging in a plane perpendicular to the X direction.

[0074] It should be emphasized that the "contacting fit" here can be that the abutting surface 131 is just in close contact with the first yoke surface 321, or that the abutting surface 131 is in tight contact with the first yoke surface 321.

[0075] More specifically, in a direction perpendicular to the first surface 101, the first surface 101 of the main body 11 also forms a surface-to-surface contact with the shell 20 (specifically the base 21), as shown in the close contact position a in FIG. 12. This arrangement increases the contact area of the fixing frame 10 and the shell 20, making the fixing frame 10 more stable and less likely to be deflected after installation, and making the structure more robust.

[0076] Further, the abutting boss 13 is also provided with two, two abutting bosses 13 correspond to two groups of clamping groups 12 respectively, specifically, correspond to the clamping cavity 17 of two groups of clamping groups 12 respectively;The yoke 32 is provided with two, one yoke 32 is clamped in each clamping cavity 17. In addition, the two abutting bosses 13 are arranged at the same height, so that the yokes 32 on both sides abut, so that when the abutting boss 13 on the fixing frame 10 abuts on the yoke 32, accurate positioning is realized, and the two abutting bosses 13 are arranged at the same height, which can prevent the two ends of the fixing frame 10 from deflecting due to instability in the X direction, ensure the accurate installation of the fixing frame 10, and better stability.

[0077] The abutting boss 13 is arranged on one side of the clamping group 12, specifically, as shown in FIG. 1 and FIG. 3, along the X direction, the abutting boss 13 is located on the side of the clamping group 12 close to the center line of the main body 11, so that the abutting boss 13 does not occupy the space outside the main body 11, avoiding increasing the volume. At the same time, the two ends of the abutting boss 13 are respectively connected to the two clamping columns 121 in the same clamping group 12, which has the effect of further improving the stability of the clamping column 121.

[0078] Of course, in other embodiments, the limiting structure is not limited to the abutting boss 13 structure described above, such as a connecting bridge arranged at the middle segment position (a position higher than the R angle reinforcing part 123) of the two clamping columns 121 in the same clamping group 12, which abuts on the yoke 32 through the connecting bridge, but it is worth noting that the connecting bridge should allow the corresponding two clamping columns 121 to deform in the Y direction.

[0079] Further, as shown in FIG. 1, the opposite side walls of the two clamping columns 121 in the same clamping group 12 are respectively provided with clamping ribs 122, and the two clamping columns 121 in the clamping group 12 are in interference fit with the yoke 32 through the two clamping ribs 122, realizing more stable clamping. The setting of the clamping rib 122 can make the yoke 32 easily insert and fit with the corresponding clamping group 12, specifically, the volume of the clamping rib 122 is small, and its toughness and deformation ability are better than those of the large-volume clamping column 121, so that when the yoke 32 is squeezed into the two clamping columns 12 in the same group, the toughness and deformation ability of the clamping rib 122 can make the yoke 32 easily squeeze into the two clamping columns 12, facilitating the installation of the fixing frame 10, and also can avoid the deformation of the clamping column 121 itself as much as possible, ensuring the strength of the clamping column 121 and improving the installation stability of the fixing frame 10.

[0080] In the embodiment, the clamping rib 122 extends in the direction (Z direction) perpendicular to the first surface, so as to further improve the connection strength between the clamping column 121 and the main body 11, and the R angle reinforcing part 123 is also connected between the clamping rib 122 and the first surface 101 of the main body 11.

[0081] In other embodiments, the clamping ribs 122 can also extend in other directions, such as directions inclined to the first surface.

[0082] Since the yoke 32 is in interference fit with the two clamping posts 121 of the same clamping group 12, that is, in the Y direction, the thickness dimension of the yoke 32 is slightly larger than the spacing of the two clamping posts 121, in order to facilitate the insertion fit of the yoke 21 with the two clamping posts 121 in the same clamping group 12, as shown in FIG. 1, in the present embodiment, the two clamping posts 121 in the same clamping group 12 are both provided with inclined guide surfaces 124, which are arranged at the end of the clamping post 121 away from the main body 11. The two inclined guide surfaces 124 in the same clamping group are opposite to each other to form a guide opening for inserting the yoke 32, so that the yoke 32 is more easily inserted into the clamping cavity 17.

[0083] Further, as shown in FIGS. 6 and 11, the main body 11 is also provided with a visual window 14 for showing the attraction contact surface of the yoke 32 and the armature assembly 33, so that the operator can intuitively judge the attraction state of the yoke 32 and the armature assembly 33.

[0084] Specifically, as shown in FIG. 1, two visual windows 14 are provided, and the two visual windows 14 are arranged at intervals in the length (X direction) direction of the main body 11. It should be noted that the shell 20 includes a base 21 with a receiving groove 211 and a cover plate 22 covering the opening of the base 21. The magnetic circuit part 30, the contact part 40 and the fixing frame 10 are all assembled in the receiving groove 211 of the base 21 in advance, and then the cover plate 22 is covered after the assembly is completed.

[0085] Further, as shown in FIG. 8, in the direction (Z direction) perpendicular to the first surface 101, the armature assembly 33 has opposite first and second sides, and the first and second sides of the armature assembly 33 are respectively provided with shaft columns 34, and the armature assembly 33 is respectively rotatably connected with the fixing frame 10 and the shell 20 through the shaft columns 34.

[0086] For example, the shaft column 34 located at the first side of the armature assembly 33 is fitted in the second hinge shaft hole 15 of the fixing frame 10, and the shaft column 34 located at the second side of the armature assembly 33 is fitted in the first hinge shaft hole 212 (specifically, the inner wall of the base 21) of the inner wall of the shell 20, so as to realize the rotatable assembly of the armature assembly 33 with the fixing frame 10 and the inner wall of the shell 20.

[0087] Specifically, as shown in FIG. 8, the shaft column 34 on the first side of the armature assembly 33 is coaxially arranged with the shaft column 34 on the second side of the armature assembly 33 and has a different diameter. Correspondingly, the hole diameters of the first and second hinge shaft holes 212 and 215 are also different, so as to ensure that the shaft columns 34 on both sides of the armature assembly 33 are respectively fitted in the first and second hinge shaft holes 212 and 215. In this way, it can be prevented that the first and second sides of the armature assembly 33 are installed reversely and affect the normal work of the armature assembly 33, and the installation efficiency can be improved.

[0088] As shown in FIG. 10, the housing 20 (specifically, the base 21) is further provided with a plug hole 213. As shown in FIGS. 1 and 2, the fixing frame 10 further includes a plug column 16 connected with the main body 11 and vertically connected with the first surface 101.

[0089] Specifically, as shown in FIGS. 1 and 2, the plug column 16 has the same extension direction as the clamping column 121, and the plug column 16 and the clamping column 121 both extend along the Z direction; that is, the plug column 16 is parallel to the clamping column 121. The number of the plug column 16 is two, and the two plug columns 16 are respectively arranged at the two ends of the main body 11 along the X direction. The number of the plug hole 213 is also two, and the two plug holes 213 respectively correspond to the two plug columns 16.

[0090] Further, the two plug columns 16 and the two clamping groups 12 are distributed at the four corners of the main body 10, and the two plug columns 16 are distributed at the two ends of the main body 11 along the X direction, and the two clamping groups 12 are distributed at the two ends of the main body 11 along the X direction. The plug column 16 is inserted into the plug hole 213 of the base 21. It should be emphasized that the fixing frame 10 is fixed in the housing 20 through the clamping cooperation of the clamping group 12 and the armature 32 and the insertion cooperation of the plug column 16 and the plug hole 213. The insertion cooperation of the plug column 16 and the plug hole 213 enables the fixing frame 10 and the base 21 to be limited in the direction perpendicular to the arrangement direction of the two clamping columns 16 of the clamping group 12, that is, the clamping direction of the two clamping columns 16 and the armature 32.

[0091] Specifically, in the embodiment, the cooperation of the clamping group 12 and the yoke 32 realizes the limiting in the Y direction, the cooperation of the insertion column 16 and the insertion hole 213 realizes the limiting in the X direction, and in the Z direction perpendicular to the X axis and the Y axis, the yoke 32 and the cover plate 22 are used for limiting; after assembly, the stable fixing of the fixing frame 10 is realized. Among them, the cooperation of the clamping group 12 and the yoke 32 limits the freedom of the fixing frame 10 in the Y direction, and the cooperation of the insertion column 16 and the insertion hole 213 limits the freedom of the fixing frame 10 in the X direction. Compared with the form of limiting the freedom of the fixing frame 10 in the X direction and the Y direction at the same time through the same limiting structure in the related art, the above limiting cooperation mode can reduce the machining precision of the fixing frame 10, and ensure the accurate positioning and installation of the fixing frame 10, so that the armature assembly 33 can form accurate and reliable magnetic attraction with the yoke 32 based on the positioning of the fixing frame 10. Of course, in other embodiments, the assembly structure of the fixing frame 10 is not limited to this.

[0092] It should be further pointed out that the fixing frame 10 is an integral injection molding structure, so it can be prepared simply by mold injection integral molding.

[0093] Embodiment two

[0094] The magnetic latching relay provided in the embodiment is different from the magnetic latching relay provided in the embodiment one in that: in the embodiment, a giving structure is further arranged in the magnetic latching relay, and the giving structure is arranged corresponding to the reinforcing part to avoid the reinforcing part. That is to say, the yoke 32 avoids the R-angle reinforcing part 123 through the giving structure.

[0095] Exemplarily, the giving structure can be a giving chamfer arranged on the yoke 32. The giving chamfer, the clamping column 121 and the first surface 101 of the main body 11 can enclose a giving space, and the R-angle reinforcing part 123 is located in the giving space and keeps a distance from the yoke 32. The yoke 32 keeps a distance from the R-angle reinforcing part 123 through the arrangement of the giving chamfer, without the need of additional structure, so that the structure is simpler.

[0096] Although the present disclosure is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made in form and details without departing from the spirit and scope of the present disclosure defined in the appended claims, and all such changes are within the protection scope of the present disclosure.

Claims

1. A magnetic latching relay comprising a housing and a magnetic circuit portion and a holder arranged in the housing, the magnetic circuit portion having an armature assembly and yokes located on both sides of the armature assembly, the holder comprising a main body and two sets of clamping groups protruding from a first surface of the main body, each set of the clamping groups comprising two clamping posts arranged at intervals, the two sets of the clamping groups respectively corresponding to the yokes on both sides and clamping the corresponding yokes through the two clamping posts to form an interference fit; the armature assembly is rotatably assembled between the housing and the main body of the holder; characterized in that: The clamping column is provided with a reinforcing portion on at least one side facing the other clamping column in the same group.

2. A magnetic latching relay according to claim 1, characterized in that: The yoke iron has a first yoke iron surface facing the main body, and the closest distance between the first yoke iron surface and the reinforcing portion in the direction perpendicular to the first surface is greater than or equal to 0 mm.

3. The magnetic latching relay of claim 2, wherein: The magnetic latching relay further comprises a limiting structure, and the first yoke iron surface abuts against the limiting structure to make the closest distance between the first yoke iron surface and the reinforcing portion greater than or equal to 0 mm.

4. The magnetic latching relay of claim 3, wherein: The limiting structure comprises an abutting boss provided on the first surface of the main body, the height of the abutting boss protruding relative to the first surface is H1, the maximum height of the reinforcing portion protruding relative to the first surface is H2, and H1 and H2 satisfy H1-H2≥0 mm. The first yoke iron surface abuts against the abutting boss.

5. The magnetic latching relay of claim 4, wherein: The abutting boss is provided in two, and the two abutting bosses correspond to two groups of clamping groups respectively, and the two abutting bosses are provided at the same height to be abutted by the two yoke irons respectively.

6. The magnetic latching relay of claim 5, wherein: The abutting boss is provided on the side of the clamping group close to the center line of the main body, and the two ends of the abutting boss are connected to the two clamping columns in the same clamping group.

7. The magnetic latching relay of claim 5 or 6, wherein: The abutting boss is in a strip shape, and the extension direction of the abutting boss is the same as the arrangement direction of the two clamping columns in the same clamping group. In the direction perpendicular to the first surface, the abutting boss has an abutting surface, and the abutting surface is in contact with the first yoke iron surface.

8. The magnetic latching relay of claim 7, wherein: In the direction perpendicular to the first surface, the first surface of the main body and the shell forming surface are in surface contact.

9. The magnetic latching relay of claim 2, wherein: The magnetic latching relay further comprises a giving structure provided on the yoke iron, and the giving structure is provided corresponding to the reinforcing portion to avoid the reinforcing portion.

10. The magnetic latching relay of claim 9, wherein: The giving structure is a giving chamfer.

11. A magnetic latching relay according to claim 1, characterized in that: All positions where the clamping column and the first surface of the main body are connected to each other are provided with the reinforcing portion.

12. The magnetic latching relay of claim 1 or 11, wherein: The reinforcing portion is an R-angle reinforcing portion.

13. The magnetic latching relay of claim 1, wherein: The side walls of the two clamping columns in the same clamping group that are opposite to each other are provided with clamping ribs, and the two clamping columns form an interference fit with the yoke iron through the two clamping ribs.

14. The magnetic latching relay of claim 13, wherein: The clamping rib extends in the direction perpendicular to the first surface.

15. The magnetic latching relay of claim 13, wherein: The connection between the clamping rib and the first surface is provided with a reinforcing portion.

16. The magnetic latching relay of claim 1, wherein: The two clamping columns in the same clamping group are provided with inclined guide surfaces, the inclined guide surfaces are provided on the ends of the clamping columns away from the main body, and the two inclined guide surfaces in the same clamping group are opposite to each other to form a guide opening.

17. The magnetic latching relay of claim 1, wherein: In the direction perpendicular to the first surface, the armature assembly has opposite first and second sides, the first and second sides of the armature assembly are respectively provided with shaft columns, and the armature assembly is rotatably connected to the fixed frame and the shell through the shaft columns respectively. The shaft column on the first side of the armature assembly and the shaft column on the second side of the armature assembly are coaxially arranged and have different diameters.

18. The magnetic latching relay of claim 1, wherein: The main body is provided with a visible window for showing the attraction contact surface of the yoke iron and the armature assembly.

19. The magnetic latching relay of claim 1, wherein: The shell is also provided with a socket, and the fixing frame further comprises a plug column vertically connected to the first surface and inserted into the socket.

20. The magnetic latching relay of claim 19, wherein: The insertion and cooperation of the plug column and the socket enable the fixing frame and the base to be limited in a direction perpendicular to the arrangement direction of the two clamping columns of the clamping group.

21. The magnetic latching relay of claim 1, wherein: The fixing frame is an integrally injection molded structure.

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