Relay

Abstract

The invention discloses a relay which comprises a movable part and a shell, and the movable part moves relative to the shell and at least has a component in the Z-axis direction. The movable part comprises an armature, a movable contact part and an insulator, the armature and the movable contact part are fixedly connected to the insulator and are arranged at intervals in the Y-axis direction, a groove is formed in the side, close to the movable contact part, of the armature in the Y-axis direction, and the groove is filled with the insulator; the shell is provided with an insulating wall, and the insulating wall extends into the interval; on a projection plane perpendicular to the Y-axis direction, the part, not covered by the projection of the insulating wall, of the projection of the movable contact part is located in the projection of the insulator, the projection of the insulator and the projection of the insulating wall are at least partially overlapped, and the overlapped part is located in the projection of the groove. The relay is good in insulativity and small in size.

Description

Technical Field

[0001] The present invention relates to the field of relays, and in particular to a relay. Background Art

[0002] Some small relays in the prior art generally include a movable part and a fixed part. The movable part includes an armature, a moving contact and an insulator. The armature and the moving contact are fixed to the insulator and arranged at intervals along the width direction of the armature. The fixed part includes a housing, a coil assembly fixed to the housing and a static contact assembly fixed to the housing. The static contact assembly includes a static contact corresponding to the moving contact. The two ends of the armature cooperate with the iron core of the coil assembly in the form of a seesaw.

[0003] In order to improve the insulation between the armature and the moving contact part in the prior art, a partition wall is usually set between the armature and the moving contact part. The partition wall includes an insulating wall formed on the shell and a partition part formed on the insulator and located at the edge of the armature. In order to prevent the insulating wall and the partition part from interfering with each other during installation, there is a gap between the insulating wall and the partition part in the prior art one, so that the partition wall forms a notch at the gap between the insulating wall and the partition part. The arc of the moving contact part will reach the armature through the gap, and the insulation performance is poor; in the prior art two, the insulating wall is Z-shaped, so that the projections of the insulating wall and the insulator at least partially overlap on the projection plane perpendicular to the width direction of the armature, and the gap between the insulating wall and the partition part is blocked by the extended insulating wall. However, after such a setting, in order to avoid the insulating wall, the space of the relay in the width direction of the armature will be increased, and the relay will be larger in size. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned defects or problems existing in the background technology and provide a relay which has better insulation than the prior art one and smaller size than the prior art two.

[0005] To achieve the above objectives, the present invention and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0006] Technical solution one and its related embodiments provide a relay, comprising a movable part and a shell, wherein the movable part moves relative to the shell and has at least a motion component in the Z-axis direction; the movable part comprises an armature, a moving contact part and an insulator, wherein the armature and the moving contact part are fixed to the insulator and arranged at intervals along the Y-axis direction, and a groove is provided on one side of the armature close to the moving contact part along the Y-axis direction, and the insulator fills the groove; the shell is provided with an insulating wall, and the insulating wall extends into the gap between the armature and the insulating part; on a projection plane perpendicular to the Y-axis direction, the parts of the projection of the moving contact part that are not covered by the projection of the insulating wall are all located in the projection of the insulator, and the projection of the insulator at least partially overlaps with the projection of the insulating wall, and the overlapping parts are all located in the projection of the groove.

[0007] Based on technical solution one, technical solution two is also provided. In technical solution two and its related embodiments, the insulator is provided with a mating part and a partitioning part which are connected as one body. The mating part fills the groove, and the partitioning part separates the armature and the moving contact part along the Y-axis direction and is provided at the edge of the armature; a gap is formed between the insulating wall and the partitioning part, and the projections on the projection plane perpendicular to the length direction of the armature at least partially overlap.

[0008] Based on technical solution one or two, there is also provided a technical solution three. In technical solution three and its related embodiments, on the projection surface perpendicular to the Y-axis direction, the area of ​​the groove mouth is larger than the area of ​​the groove bottom.

[0009] Based on Technical Solution 2, Technical Solution 4 is also provided. Technical Solution 4 and its related embodiments further include a coil assembly; the width direction of the armature is the Y-axis direction; the armature is provided with a suction part, a connecting part and a suction part in sequence along its length direction, each suction part is provided with the groove, the connecting part is injection molded with the insulator, the number of the moving contact parts and the number of the insulating walls correspond to the suction part, and the moving contact part and the corresponding suction part are arranged at intervals along the Y-axis direction; the coil assembly is fixed relative to the shell and is provided with two magnetic pole parts arranged along the X-axis direction, respectively corresponding to the two suction parts.

[0010] Based on technical solution four, technical solution five is also provided. In technical solution five and its related embodiments, a first surface and a second surface facing away from each other are respectively provided on both sides of the thickness direction of the attraction portion; the first surface is suitable for being attracted to or away from the corresponding magnetic pole portion; and the groove only passes through the second surface.

[0011] Based on technical solution four, technical solution six is ​​also provided. In technical solution six and its related embodiments, a first surface and a second surface facing away from each other are respectively provided on both sides of the thickness direction of the attraction portion; the first surface is suitable for being attracted to or away from the corresponding magnetic pole portion; and the groove runs through the first surface and the second surface.

[0012] Based on technical solution five or six, technical solution seven is also provided. In technical solution seven and its related embodiments, the shell includes a base and an outer shell, and the base and the outer shell are fixedly connected to form a cavity suitable for accommodating the movable part. The outer shell is provided with a top wall perpendicular to the Z-axis direction, and each insulating wall is abutted or fixedly connected to the top wall.

[0013] Based on Technical Solution Seven, Technical Solution Eight is also provided. In Technical Solution Eight and its related embodiments, when the insulating walls are arranged on the base, each insulating wall abuts against the top wall; when the insulating walls are arranged on the outer shell, each insulating wall is fixedly connected to the top wall.

[0014] Based on Technical Solution Seven, Technical Solution Nine is also provided. Technical Solution Nine and its related embodiments further include a static contact group and two moving lead-out terminals; the number of the moving contact parts is four, and two moving contact parts are respectively arranged on both sides of each suction part along the Y-axis direction, and the moving contact part is provided with a moving contact point. The two moving lead-out terminals are respectively located on both sides of the connecting part along the Y-axis direction, and the two moving contact parts and the moving lead-out terminals are electrically connected on the same side of the armature along the Y-axis direction; the static contact group includes static contacts corresponding to each moving contact part, each static contact part is provided with a static lead-out terminal and a static contact point corresponding to the moving contact point of the corresponding moving contact part, and each static lead-out terminal and the two moving lead-out terminals are injection molded with the base.

[0015] Based on technical solution one, technical solution ten is also provided. In technical solution ten and its related embodiments, the width direction of the moving contact part is the Y-axis direction; the moving contact part is provided with a first section, a second section and a third section in sequence along its length direction, and the third section is provided with a moving contact point; the first section is fixedly connected to the insulator, the width of the third section is greater than the width of the second section, and the width of the second section gradually increases in the direction approaching the third section.

[0016] Based on technical solution ten, technical solution eleven is also provided. In technical solution eleven and its related embodiments, on the projection plane perpendicular to the Y-axis direction, the projection of the third segment is covered by the projection of the insulating wall.

[0017] From the above description of the present invention and its preferred embodiments, it can be seen that, compared with the prior art, the technical solution of the present invention and its preferred embodiments have the following beneficial effects due to the adoption of the following technical means:

[0018] In technical solution one and its preferred embodiment, since on the projection plane perpendicular to the Y-axis direction, the parts of the projection of the moving contact part that are not covered by the projection of the insulating wall are all located in the projection of the insulator, therefore, compared with the prior art one, the present application increases the shortest distance between the moving contact part and the armature through the cooperation of the insulating wall and the insulator, increases the electrical gap between the moving contact part and the armature, increases the insulation between the moving contact part and the armature, and realizes the isolation between the strong current part (moving contact part) and the weak current part (armature); since the projection of the insulator at least partially overlaps with the projection of the insulating wall and the overlapping parts are all located in the projection of the groove, the setting of the groove makes the space occupied by the insulator in the interval between the armature and the moving contact part along the Y-axis direction small, and makes it possible to increase the electrical gap between the moving contact part and the armature without improving the structure of the insulating wall, thereby making the overall space occupied by the relay in the Y-axis direction small. Therefore, compared with the prior art two, the size of the relay in the Y-axis direction of the present application is smaller.

[0019] In the second technical solution and its preferred embodiment, the insulator is provided with a matching portion and a partitioning portion connected as one body, the matching portion is filled with a groove, the partitioning portion separates the armature and the moving contact portion along the Y-axis direction and is arranged at the edge of the armature, compared with the solution in which the partitioning portion and the matching portion are filled with the groove at the same time, a larger groove is required on the armature to accommodate the partitioning portion and the matching portion at the same time, and the groove in this solution is longer along the length direction of the armature, and the insulator occupies more part on the armature. Compared with the present solution, when the armature has the same size and volume, the magnetic material portion is less in this solution, so the size of the armature is smaller than that of the present solution. When the dimensions and volumes are the same, the magnetic conductivity of the armature is worse, while the magnetic conductivity of the armature in this scheme is better; a gap is formed between the insulating wall and the partition, and the projections on the projection plane perpendicular to the length direction of the armature at least partially overlap, which can avoid interference between the movable part and the insulating wall when the movable part moves, and on the other hand, compared with the scheme in which the projections of the insulating wall and the partition on the projection plane perpendicular to the length direction of the armature are staggered along the Y-axis direction, the insulating wall and the insulator occupy a small space in the gap between the armature and the moving contact part along the Y-axis direction, thereby further reducing the space occupied by the relay as a whole in the Y-axis direction.

[0020] In technical solution three and its preferred embodiment, on the projection plane perpendicular to the Y-axis direction, the area of ​​the groove mouth is larger than the area of ​​the groove bottom. Compared with the solution in which the area of ​​the groove mouth is less than or equal to the area of ​​the groove bottom, the insulating wall and the partition portion can be formed with a smaller volume of the groove, and the projections on the projection plane perpendicular to the length direction of the armature at least partially overlap. The smaller volume of the groove also minimizes the influence of the matching part on the magnetic conductivity of the armature. Among them, the area of ​​the groove mouth is larger than the area of ​​the groove bottom, which makes the matching part more concentrated on the edge of the armature, thereby minimizing the influence on the middle part of the armature, and further reducing the influence on the magnetic conductivity of the armature. Therefore, the technical solution can increase the insulation between the armature and the moving contact part while minimizing the influence on the magnetic conductivity of the armature.

[0021] Technical solution 4 and its preferred embodiment are preferred implementations of the relay of the present application, wherein the connecting portion of the armature and the insulator are injection molded, and the combined injection molding combines the armature and the insulator into a whole, ensuring the reliability of the operation of the entire movable part. At the same time, because the combined injection molding process is adopted, the insulation can be improved by simply improving the armature without increasing the process and parts.

[0022] In technical solution five and its preferred embodiment, a first surface and a second surface facing away from each other are respectively provided on both sides of the thickness direction of the suction part; the first surface is suitable for fitting with the magnetic pole part; the groove only runs through the second surface, which ensures that the part of the projection of the moving contact part that is not covered by the projection of the insulating wall is located in the projection of the insulator, and the shortest electrical gap between the moving contact part and the armature is changed from the straight-line distance between the moving contact part and the armature to the shortest distance between the moving contact part and the end of the matching part close to the first surface of the armature, thereby increasing the electrical gap. On the other hand, since the closer the armature is to the magnetic pole part, the denser the magnetic induction lines are when the coil is excited, and the groove is only opened on the second surface, that is, only opened on the side of the armature away from the magnetic pole part, it is not easy to affect the suction of the magnetic pole part to the armature, thereby ensuring the reliability of the relay operation.

[0023] In technical solution six and its preferred embodiment, a first surface and a second surface facing away from each other are respectively provided on both sides of the thickness direction of the attraction portion; the first surface is suitable for being attracted to or away from the corresponding magnetic pole portion; the groove runs through the first surface and the second surface, so the shortest electrical gap between the moving contact portion and the armature is longer, further improving the insulation.

[0024] In technical solution seven and its preferred embodiments, the shell includes a base and an outer shell, the base and the outer shell are fixedly connected to form a cavity suitable for accommodating the movable part, the outer shell is provided with a top wall perpendicular to the Z-axis direction, and each insulating wall is abutted or fixed to the top wall. The insulating wall can be used as a limiting structure in the Z-axis direction between the base and the outer shell, and the insulating wall can also increase the insulation between the armature and the moving contact part, and can also omit the design of other Z-axis direction limiting structures on the outer shell, and the structure is simpler.

[0025] In technical solution eight and its preferred embodiment, when the insulating wall is arranged on the base, each insulating wall is in contact with the top wall. During assembly, the movable part is installed on the base, and the insulating wall and the movable part are allowed to avoid each other. Then, the outer shell and the base are fixedly connected. Therefore, during assembly, the insulating wall and the movable part are allowed to avoid each other within the visual range, and the avoidance is controllable. The assembly precision requirement is lower, which is conducive to reducing the risk of interference between the insulating wall and the movable part, reducing the size of the assembly gap, and is conducive to miniaturization of the relay volume. When the insulating wall is arranged on the outer shell, each insulating wall is fixedly connected to the top wall. The outer shell can form a limit in the X, Y, and Z axis directions between the insulating wall and the base, so there is no need to set other limit structures between the base and the outer shell. The processing of the shell is simpler, and it is conducive to strengthening the shell strength and preventing the deformation problem when the relay is welded on the circuit board.

[0026] Technical solution nine and its preferred embodiment are preferred implementation modes of the relay of the present application, wherein each static lead-out terminal and each dynamic lead-out terminal are injection molded with the base, which is conducive to the miniaturization of the relay.

[0027] In technical solution ten and its preferred embodiments, the structural design of the moving contact part increases the area of ​​the moving reed, wherein the increase in the width of the third section increases the welding area of ​​the moving contact, thereby facilitating increasing the volume of the moving contact and improving the load capacity of the relay; the width of the second section gradually increases in the direction approaching the third section, thereby ensuring a balanced strength transition of the moving contact part.

[0028] In technical solution eleven and its preferred embodiment, on the projection plane perpendicular to the Y-axis direction, the projection of the third section is covered by the projection of the insulating wall, ensuring a larger electrical gap between the moving contact and the armature. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic diagram of a relay according to Embodiment 1 of the present application;

[0031] Figure 2 This is a schematic diagram of the fixed part of Example 1 of the present application;

[0032] Figure 3 is a schematic diagram of the movable part of Example 1 of the present application;

[0033] Figure 4 A schematic diagram of an armature according to Example 1 of the present application;

[0034] Figure 5 A top view of the housing of Example 1 of the present application;

[0035] Figure 6 for Figure 5 Section view in AA direction;

[0036] Figure 7 A schematic diagram of an armature according to Embodiment 2 of the present application;

[0037] Figure 8 A cross-sectional view of Example 2 of the present application;

[0038] Fig. 9 This is a schematic diagram of the shell of Example 3 of the present application.

[0039] Description of main reference numerals:

[0040] Fixed part 100; coil assembly 10; magnetic pole part 11; signal terminal 12; static contact 20; static lead-out terminal 21; static contact 22; shell 30; base 31; mounting groove 311; shell 32; top wall 321; insulating wall 33; movable lead-out terminal 70; first positioning portion 71; movable part 200; armature 40; suction part 41; groove 411; first surface 412; second surface 413; connecting part 42; movable contact part 50; first section 51; second section 52; third section 53; movable contact 54; second positioning portion 55; insulator 60; insulating part 61; matching part 62; partition part 63; movable lead-out terminal 70; first positioning portion 71. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are preferred embodiments of the present invention and should not be regarded as excluding other embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the claims and the specification except for the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the feature with one of the above directions is perpendicular to the feature with another direction, and do not require that they must be implemented according to the "X-axis direction", "Y-axis direction" and "Z-axis direction" described in the embodiments. In the embodiments, the X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Among them, the X-axis direction can be divided into left and right, the Y-axis direction can be divided into front and back, and the Z-axis direction can be divided into top and bottom.

[0043] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0044] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0045] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0046] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0047] Example 1

[0048] See also Figure 1 , Figure 1 A relay is shown, comprising a fixed part 100 and a movable part 200 .

[0049] See also Figure 1-2 The fixed part 100 includes a coil assembly 10 , a static contact assembly, two moving lead-out terminals 70 and a housing 30 .

[0050] The coil assembly 10 belongs to the prior art. The coil assembly 10 includes a coil frame, a U-shaped iron core and an enameled wire. The coil frame includes a winding shaft extending along the X-axis direction and retaining walls respectively arranged at both ends of the winding shaft. The coil frame is also provided with a signal terminal 12. The U-shaped iron core penetrates the coil frame and two retaining walls are respectively extended at both ends thereof along the Z-axis direction. The part of the U-shaped iron core extending out of the retaining wall forms a magnetic pole portion 11, so that the coil assembly 10 is provided with two magnetic pole portions 11 arranged along the X-axis direction.

[0051] The static contact group includes four static contacts 20 , and each static contact 20 is provided with a static lead-out terminal 21 and a static contact point 22 .

[0052] The movable lead-out terminal 70 is provided with a first positioning portion 71 .

[0053] See also Figure 1 The housing 30 includes a base 31 and a shell 32. The base 31 is in a rectangular shape as a whole, with its length direction being the X-axis direction, its width direction being the Y-axis direction, and its height direction being the Z-axis direction. Figure 2The base 31, the coil assembly 10, the four static lead-out terminals 21 and the two dynamic lead-out terminals 70 are injection molded, and the four static contacts 22 are arranged near the four corners of the top surface of the base 31, so that the coil assembly 10 is fixed relative to the housing 30, wherein the two first positioning portions 71 are respectively located in the middle of the top surface of the base 31 along the X-axis direction, and the two first positioning portions 71 are arranged along the Y-axis direction, and the two magnetic pole portions 11 are respectively located at the two ends of the base 31 along the X-axis direction, the signal terminal 12, the dynamic lead-out terminal 70 and the static lead-out terminal 21 all extend out of the bottom surface of the base 31, and each magnetic pole portion 11 is also located in the middle of the two static contacts 22 on the corresponding side. The base 31 is also provided with an insulating wall 33, that is, the housing 30 is provided with an insulating wall 33. In this embodiment, two insulating walls 33 extending along the X-axis direction and perpendicular to the Y-axis direction are arranged on both sides of each magnetic pole portion 11 along the Y-axis direction. The insulating wall 33 can separate the static contact 22 and the magnetic pole portion 11 along the Y-axis direction, and the insulating wall 33 extends to the edge of the base 31. The base 31 is provided with an upwardly opening mounting groove 311 between the two magnetic pole portions 11.

[0054] The housing 32 and the base 31 are fixedly connected to form a cavity suitable for accommodating the movable part 200 . The housing 32 is provided with a top wall 321 perpendicular to the Z-axis direction, and each insulating wall 33 is suitable for abutting against the top wall 321 .

[0055] The movable portion 200 moves relative to the housing 30 and has at least a component of motion in the Z-axis direction; see Figure 3 The movable part 200 includes an armature 40, a movable contact part 50 and an insulator 60. The armature 40 and the movable contact part 50 are fixed to the insulator 60 and arranged at intervals along the Y-axis direction. A groove 411 is provided on one side of the armature 40 close to the movable contact part 50 along the Y-axis direction, and the insulator 60 fills the groove 411.

[0056] Specifically, see Figure 4 , the width direction of the armature 40 is the Y-axis direction; the armature 40 is provided with a suction part 41, a connecting part 42 and a suction part 41 in sequence along its length direction, and each suction part 41 is provided with grooves 411 with openings facing away from each other on both sides along the Y-axis direction; in this embodiment, the suction part 41 is provided with a first surface 412 and a second surface 413 facing away from each other on both sides in the thickness direction; the first surface 412 is suitable for fitting with the magnetic pole part 11; the groove 411 only passes through the second surface 413. On the projection plane perpendicular to the Y-axis direction, the area of ​​the notch of the groove 411 is larger than the area of ​​the groove bottom, and the shape of the groove 411 can be arc-shaped, trapezoidal or other shapes.

[0057] See also Figure 3The number of the moving contact parts 50 is four, that is, the number of the moving contact parts 50 and the number of the insulating walls 33 correspond to the suction parts 41, and two moving contact parts 50 are arranged on both sides of each suction part 41 along the Y-axis direction, that is, the moving contact parts 50 and the corresponding suction parts 41 are arranged at intervals along the Y-axis direction, and the width direction of the moving contact part 50 is the Y-axis direction; the moving contact part 50 is sequentially provided with a first section 51, a second section 52 and a third section 53 along its length direction, and the third section 53 is provided with a moving contact point 54, also That is, the moving contact portion 50 is provided with a moving contact 54, which can be closed or disconnected with the corresponding static contact 22 mentioned above; the first section 51 is fixedly connected to the insulator 60, and in this embodiment, the first sections 51 of the two moving contact portions 50 located on the same side of the suction portion 41 along the Y-axis direction are connected as a whole to form a second positioning portion 55 suitable for matching with the first positioning portion 71, the width of the third section 53 is greater than the width of the second section 52, and the width of the second section 52 gradually increases in the direction close to the third section 53. Each moving contact 54 corresponds to each static contact 22 one by one.

[0058] See also Figure 3 The insulator 60 is fixedly connected to each moving contact part 50 and the armature 40. In this embodiment, the insulator 60 is provided with an insulating part 61 which is injection molded with the connecting part 42 and the first section 51 of each moving contact part 50 at one end away from the third section 53. The second positioning part 55 extends out of the insulating part 61 to be fixedly connected to the first positioning part 71. The insulator 60 is also provided with a matching part 62 and a partitioning part 63 which are connected as one body. The matching part 62 fills the groove 411. The partitioning part 63 connects the matching part 62 and the insulating part 61. The partitioning part 63 separates the armature 40 and the moving contact part 50 along the Y-axis direction and is provided at the edge of the armature 40. The partitioning part 63 extends along the X-axis direction, and the partitioning part 63 extends to the middle of the matching part 62 along the X-axis direction at one end close to the matching part 62.

[0059] See also Figure 1-2 and Figure 5-6 The middle part of the movable part 200 along the X-axis direction is suitable for being accommodated in the mounting groove 311, the two movable lead-out terminals 70 are respectively located on both sides of the connecting part 42 along the Y-axis direction, and the two movable contact parts 50 located on the same side of the armature 40 along the Y-axis direction are electrically connected to the movable lead-out terminals 70, and the insulating wall 33 can be inserted into the gap between the corresponding movable contact parts 50 and the suction parts 41, and the two suction parts 41 correspond to the two magnetic pole parts 11 respectively; on the projection plane perpendicular to the Y-axis direction, the projection of the movable contact part 50 is not insulated. The portions covered by the projection of the edge wall 33 are all located in the projection of the insulator 60, and the projection of the insulator 60 at least partially overlaps with the projection of the insulating wall 33, and the overlapping portions are all located in the projection of the groove 411, and the projection of the third section 53 of the moving contact portion 50 is covered by the projection of the insulating wall 33; wherein a gap is formed between the insulating wall 33 and the partition portion 63, and the projections of the projection plane perpendicular to the length direction of the armature 40 at least partially overlap, and the end of the groove 411 close to the first surface 412 is lower than the moving contact portion 50.

[0060] In this embodiment, since the parts of the projection of the moving contact part 50 that are not covered by the projection of the insulating wall 33 are all located in the projection of the insulator 60 on the projection plane perpendicular to the Y-axis direction, the present application increases the shortest distance between the moving contact part 50 and the armature 40 through the cooperation of the insulating wall 33 and the insulator 60, increases the electrical gap between the moving contact part 50 and the armature 40, increases the insulation between the moving contact part 50 and the armature 40, and realizes the isolation between the strong current part (moving contact part 50) and the weak current part (armature 40). Since the projection of the insulator 60 at least partially overlaps with the projection of the insulating wall 33 and the overlapping parts are all located in the projection of the groove 411, the setting of the groove 411 makes the insulator 60 occupy a small space along the Y-axis direction in the interval between the armature 40 and the moving contact part 50, and makes it possible to increase the electrical gap between the moving contact part 50 and the armature 40 without improving the structure of the insulating wall 33, thereby making the overall space occupied by the relay in the Y-axis direction small. Therefore, compared with the second prior art, the size of the relay in the Y-axis direction is smaller in the present application.

[0061] In this embodiment, the insulator 60 is provided with a mating portion 62 and a partitioning portion 63 which are connected as one body, the mating portion 62 fills the groove 411, the partitioning portion 63 separates the armature 40 and the moving contact portion 50 along the Y-axis direction and is arranged at the edge of the armature 40, compared with the scheme in which the partitioning portion 63 and the mating portion 62 simultaneously fill the groove 411, a larger groove needs to be provided on the armature 40 to accommodate the partitioning portion 63 and the mating portion 62 simultaneously, in this scheme, the length of the groove 411 along the length direction of the armature 40 is longer, the insulator 60 occupies a larger part on the armature 40, and compared with this scheme, when the armature 40 has the same size and volume, the magnetic material portion is less in this scheme, so compared with this scheme, the armature 40 has a smaller magnetic material portion. When the size and volume of 40 are the same, the magnetic conductivity of the armature 40 is worse, and the magnetic conductivity of the armature 40 in this scheme is better; a gap is formed between the insulating wall 33 and the partition 63, and the projections on the projection plane perpendicular to the length direction of the armature 40 at least partially overlap, on the one hand, it can avoid interference between the movable part 200 and the insulating wall 33 when it moves, on the other hand, compared with the scheme in which the projections of the insulating wall 33 and the partition 63 on the projection plane perpendicular to the length direction of the armature 40 are staggered along the Y-axis direction, the insulating wall 33 and the insulator 60 in the gap between the armature 40 and the moving contact part 50 along the Y-axis direction Occupies a small space, thereby further making the overall space occupied by the relay in the Y-axis direction small.

[0062] In the present embodiment, on the projection plane perpendicular to the Y-axis direction, the area of ​​the notch of the groove 411 is larger than the area of ​​the bottom of the groove. Compared with the solution in which the area of ​​the notch of the groove 411 is less than or equal to the area of ​​the bottom of the groove, the insulating wall 33 and the partition 63 can be spaced apart while the volume of the groove 411 is smaller, and the projections on the projection plane perpendicular to the length direction of the armature 40 at least partially overlap. The smaller volume of the groove 411 also minimizes the effect of the mating portion 62 on the magnetic conductivity of the armature 40. Among them, the area of ​​the notch of the groove 411 is larger than the area of ​​the bottom of the groove, which also makes the mating portion 62 more concentrated on the edge of the armature 40, thereby minimizing the effect on the middle part of the armature 40 and further reducing the effect on the magnetic conductivity of the armature 40. Therefore, the present technical solution can increase the insulation between the armature 40 and the moving contact portion 50 while minimizing the effect on the magnetic conductivity of the armature 40.

[0063] In this embodiment, the connecting portion 42 of the armature 40 and the insulator 60 are injection molded, and the armature 40 and the insulator 60 are combined into a whole by combined injection molding, thereby ensuring the reliability of the entire movable part. At the same time, because the combined injection molding process is adopted, the insulation performance can be improved by simply improving the armature 40, without increasing the process and components.

[0064] In this embodiment, a first surface 412 and a second surface 413 facing away from each other are respectively provided on both sides of the suction portion 41 in the thickness direction; the first surface 412 is suitable for fitting with the magnetic pole portion 11; the groove 411 only passes through the second surface 413, on the one hand, it is ensured that the part of the projection of the moving contact portion 50 that is not covered by the projection of the insulating wall 33 is located in the projection of the insulator 60, and the shortest electrical gap between the moving contact portion 50 and the armature 40 is changed from the straight-line distance between the moving contact portion 50 and the armature 40 to the shortest distance between the moving contact portion 50 and the end of the matching portion 62 close to the first surface 412 of the armature 40, and the electrical gap is increased. On the other hand, since the closer the armature 40 is to the magnetic pole portion 11, the denser the magnetic induction lines are when the coil is excited, the groove 411 is only opened on the second surface 413, that is, it is only opened on the side of the armature 40 away from the magnetic pole portion 11, which is not easy to affect the suction of the magnetic pole portion 11 on the armature 40, thereby ensuring the reliability of the relay operation.

[0065] In this embodiment, the shell 30 includes a base 31 and an outer shell 32. The base 31 and the outer shell 32 are fixedly connected to form a cavity suitable for accommodating the movable part 200. The outer shell 32 is provided with a top wall 321 perpendicular to the Z-axis direction. Each insulating wall 33 is abutted or fixed to the top wall 321. The insulating wall 33 can be used as a limiting structure in the Z-axis direction between the base 31 and the outer shell 32, and the insulating wall 33 can also increase the insulation between the armature 40 and the moving contact part 50, and can also omit the design of other Z-axis direction limiting structures on the outer shell 32, and the structure is simpler.

[0066] In this embodiment, each static lead-out terminal 21 and each dynamic lead-out terminal 70 are injection-molded with the base 31, which is beneficial to miniaturization of the relay.

[0067] In this embodiment, when the insulating walls 33 are arranged on the base 31, each insulating wall 33 is in contact with the top wall 321. During assembly, the movable part 200 is installed on the base 31, and the insulating walls 33 and the movable part 200 are allowed to avoid each other. Then, the outer shell 32 and the base 31 are fixedly connected. Therefore, during assembly, the avoidance of the insulating walls 33 and the movable part 200 is within the visual range, and the avoidance is controllable. The assembly accuracy requirements are lower, which is beneficial to reducing the risk of interference between the insulating walls 33 and the movable part 200, reducing the size of the assembly gap, and facilitating the miniaturization of the relay.

[0068] In this embodiment, the structural design of the moving contact part 50 increases the area of ​​the moving spring piece, wherein the increase in the width of the third section 53 increases the welding area of ​​the moving contact 54, thereby facilitating an increase in the volume of the moving contact 54 and improving the load capacity of the relay; the width of the second section 52 gradually increases in the direction approaching the third section 53, thereby ensuring a balanced strength transition of the moving contact part 50.

[0069] In this embodiment, on the projection plane perpendicular to the Y-axis direction, the projection of the third section 53 is covered by the projection of the insulating wall 33 , thereby ensuring a larger electrical gap between the moving contact 54 and the armature 40 .

[0070] Example 2

[0071] The structure of Example 2 is basically the same as that of Example 1, except that Figure 7-8 , the groove 411 in Example 2 runs through the first surface 412 and the second surface 413 .

[0072] In this embodiment, a first surface 412 and a second surface 413 facing away from each other are respectively provided on both sides of the attraction portion 41 in the thickness direction; the first surface 412 is suitable for being attracted to or away from the corresponding magnetic pole portion 11; the groove 411 runs through the first surface 412 and the second surface 413, so the shortest electrical gap between the moving contact portion 50 and the armature 40 is longer, further improving the insulation.

[0073] Example 3

[0074] The structure of Example 3 is basically the same as that of Example 1, except that Fig. 9 The insulating walls 33 are disposed on the outer shell 32 , and each insulating wall 33 is fixedly connected to the top wall 321 .

[0075] In this embodiment, when the insulating walls 33 are arranged on the outer shell 32, each insulating wall 33 is fixedly connected to the top wall 321, so that the outer shell 32 can form limits in the X, Y, and Z axis directions between the insulating walls 33 and the base 31, thereby eliminating the need to set other limit structures between the base 31 and the outer shell 32. The processing of the shell 30 is simpler, and it is beneficial to strengthen the strength of the outer shell 32 and prevent deformation problems when the relay is welded on the circuit board.

[0076] The description of the above specification and embodiments is used to explain the protection scope of the present invention, but does not constitute a limitation on the protection scope of the present invention. Through the enlightenment of the present invention or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent substitutions or other improvements to the embodiments of the present invention or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the present invention.

Claims

1. A relay, characterized in that: The invention comprises a movable part (200) and a housing (30), wherein the movable part (200) moves relative to the housing (30) and has at least a component of movement in the Z-axis direction; the movable part (200) comprises an armature (40), a movable contact part (50) and an insulator (60), wherein the armature (40) and the movable contact part (50) are fixedly connected to the insulator (60) and arranged at intervals along the Y-axis direction; a groove (411) is provided on one side of the armature (40) close to the movable contact part (50) along the Y-axis direction, and the insulator (60) fills the groove (411); The housing (30) is provided with an insulating wall (33), and the insulating wall (33) extends into the gap between the armature (40) and the movable contact part (50); On a projection plane perpendicular to the Y-axis direction, the portions of the projection of the moving contact portion (50) that are not covered by the projection of the insulating wall (33) are all located in the projection of the insulator (60), and the projection of the insulator (60) at least partially overlaps with the projection of the insulating wall (33), and the overlapping portions are all located in the projection of the groove (411).

2. A relay as claimed in claim 1, characterized in that: The insulator (60) is provided with a matching portion (62) and a partition portion (63) which are connected as one body, the matching portion (62) fills the groove (411), the partition portion (63) separates the armature (40) and the movable contact portion (50) along the Y-axis direction and is provided at the edge of the armature (40); a gap is formed between the insulating wall (33) and the partition portion (63), and the projections on the projection plane perpendicular to the length direction of the armature (40) at least partially overlap.

3. A relay as claimed in claim 1 or 2, characterized in that: On a projection plane perpendicular to the Y-axis direction, the area of ​​the notch of the groove (411) is larger than the area of ​​the groove bottom.

4. A relay as claimed in claim 2, characterized in that: It also includes a coil assembly (10); the width direction of the armature (40) is the Y-axis direction; the armature (40) is provided with a suction portion (41), a connecting portion (42) and a suction portion (41) in sequence along its length direction; each suction portion (41) is provided with the groove (411); the connecting portion (42) and the insulator (60) are injection molded; the number of the moving contact portions (50) and the number of the insulating walls (33) are both corresponding to the suction portion (41); the moving contact portions (50) and the corresponding suction portions (41) are arranged at intervals along the Y-axis direction; the coil assembly (10) is fixed relative to the housing (30) and is provided with two magnetic pole portions (11) arranged along the X-axis direction and corresponding to the two suction portions (41) respectively.

5. A relay as claimed in claim 4, characterized in that: A first surface (412) and a second surface (413) that are opposite to each other are respectively provided on both sides of the attraction portion (41) in the thickness direction; the first surface (412) is suitable for being attracted to or away from the corresponding magnetic pole portion (11); and the groove (411) only passes through the second surface (413).

6. A relay as claimed in claim 4, characterized in that: A first surface (412) and a second surface (413) that are opposite to each other are respectively provided on both sides of the attraction portion (41) in the thickness direction; the first surface (412) is suitable for being attracted to or away from the corresponding magnetic pole portion (11); and the groove (411) passes through the first surface (412) and the second surface (413).

7. A relay as claimed in claim 5 or 6, characterized in that: The housing (30) comprises a base (31) and an outer shell (32); the base (31) and the outer shell (32) are fixedly connected to form a cavity suitable for accommodating the movable part (200); the outer shell (32) is provided with a top wall (321) perpendicular to the Z-axis direction; and each insulating wall (33) is abutted against or fixedly connected to the top wall (321).

8. A relay as claimed in claim 7, characterized in that: When the insulating walls (33) are arranged on the base (31), each insulating wall (33) abuts against the top wall (321); when the insulating walls (33) are arranged on the outer shell (32), each insulating wall (33) is fixedly connected to the top wall (321).

9. A relay as claimed in claim 7, characterized in that: The invention also comprises a static contact member group and two movable lead-out terminals (70); the number of the movable contact parts (50) is four, two movable contact parts (50) are arranged on both sides of each suction part (41) along the Y-axis direction, the movable contact part (50) is provided with a movable contact point (54), the two movable lead-out terminals (70) are respectively located on both sides of the connecting part (42) along the Y-axis direction, and the two movable contact parts (50) and the movable lead-out terminals (70) located on the same side of the armature (40) along the Y-axis direction are electrically connected; the static contact member group comprises static contact members (20) respectively corresponding to each movable contact member (50), each static contact member (20) is provided with a static lead-out terminal (21) and a static contact point (22) corresponding to the movable contact point (54) of the corresponding movable contact member (50), and each static lead-out terminal (21) and the two movable lead-out terminals (70) are injection molded with the base (31).

10. A relay as claimed in claim 1, characterized in that: The width direction of the moving contact portion (50) is the Y-axis direction; the moving contact portion (50) is provided with a first section (51), a second section (52) and a third section (53) in sequence along its length direction, and the third section (53) is provided with a moving contact point (54); the first section (51) is fixedly connected to the insulator (60), the width of the third section (53) is greater than the width of the second section (52), and the width of the second section (52) gradually increases in a direction approaching the third section (53).

11. A relay as claimed in claim 10, characterized in that: On a projection plane perpendicular to the Y-axis direction, the projection of the third segment (53) is covered by the projection of the insulating wall (33).

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