Relay

Abstract

The utility model 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 utility model relates to the field of relay, concretely relates to a relay. BACKGROUND

[0002] Some small relays of prior art generally include movable part and fixed part, movable part includes armature, movable contact part and insulator, armature and movable contact part are fixedly connected to insulator and are arranged at intervals along the width direction of armature.

[0003] In order to improve the insulation between armature and movable contact part in prior art, generally, partition wall is arranged between armature and movable contact part, partition wall includes insulating wall formed on shell and partition part formed on insulator and located at the edge of armature, in order to avoid interference between insulating wall and partition part during installation, there is gap between insulating wall and partition part in prior art one, so that partition wall forms gap at the gap between insulating wall and partition part, and the arc of movable contact part reaches armature through the gap, and the insulation performance is poor, in prior art two, insulating wall is Z-shaped, so that the projection of insulating wall and insulator on the projection plane perpendicular to the width direction of armature at least partially overlaps, and the gap between insulating wall and partition part is blocked by the extended insulating wall, but after such arrangement, in order to avoid the insulating wall, the space of relay in the width direction of armature is increased, and the volume of relay is large. SUMMARY

[0004] The utility model aims at overcoming the above-mentioned defects or problems in the background art, providing a kind of, it is better than prior art one, its compared to prior art two, the volume of relay is small.

[0005] To achieve the above object, the utility model and its preferred embodiment adopt the following technical solutions, but the embodiment is not limited to the following scheme:

[0006] The technical solution one and related embodiments thereof provide a relay, which comprises a movable part and a shell, the movable part moves relative to the shell and has at least a movement 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 fixed to the insulator and are arranged at intervals along the Y-axis direction, a recess is arranged on the side of the armature close to the movable contact part along the Y-axis direction, and the recess is filled with the insulator; the shell is provided with an insulating wall, the insulating wall extends into the interval between the armature and the insulator; in the projection plane perpendicular to the Y-axis direction, the part of the projection of the movable contact part not covered by the projection of the insulating wall is 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 part is located in the projection of the recess.

[0007] Based on the technical solution one, the technical solution two is also provided, in the technical solution two and related embodiments thereof, the insulator is provided with a cooperation part and a separation part which are integrated, the cooperation part fills the recess, and the separation part separates the armature and the movable contact part along the Y-axis direction and is arranged at the edge of the armature; the insulating wall and the separation part form an interval and the projection in the projection plane perpendicular to the length direction of the armature at least partially overlaps.

[0008] Based on the technical solution one or two, the technical solution three is also provided, in the technical solution three and related embodiments thereof, in the projection plane perpendicular to the Y-axis direction, the area of the slot opening of the recess is greater than the area of the slot bottom.

[0009] Based on the technical solution two, the technical solution four is also provided, in the technical solution four and related embodiments thereof, further comprising a coil assembly; the width direction of the armature is the Y-axis direction; the armature is sequentially provided with an attraction part, a connecting part and an attraction part along the length direction thereof, each attraction part is provided with the recess, the connecting part is injection molded with the insulator, the number of the movable contact parts and the number of the insulating walls correspond to the number of the attraction parts, the movable contact part and the corresponding attraction 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 and corresponding to the two attraction parts.

[0010] Based on the technical solution four, the technical solution five is also provided, in the technical solution five and related embodiments thereof, the two sides of the thickness direction of the attraction part are respectively provided with a first face and a second face which are away from each other; the first face is suitable for being attracted to or away from the corresponding magnetic pole part; and the recess only penetrates the second face.

[0011] Based on the technical solution four, the technical solution six is also provided, in the technical solution six and related embodiments thereof, the two sides of the thickness direction of the attraction part are respectively provided with a first face and a second face which are away from each other; the first face is suitable for being attracted to or away from the corresponding magnetic pole part; and the recess penetrates the first face and the second face.

[0012] Based on the technical scheme five or six, there is also a technical scheme seven, in the technical scheme seven and related embodiments, the shell comprises a base and a housing, the base and the housing are fixedly connected to form a cavity suitable for accommodating the movable part, the housing is provided with a top wall perpendicular to the Z-axis direction, and each insulating wall abuts or is fixedly connected with the top wall.

[0013] Based on the technical scheme seven, there is also a technical scheme eight, in the technical scheme eight and related embodiments, when the insulating wall is arranged on the base, each insulating wall abuts the top wall; when the insulating wall is arranged on the housing, each insulating wall is fixedly connected with the top wall.

[0014] Based on the technical scheme seven, there is also a technical scheme nine, in the technical scheme nine and related embodiments, it further comprises a static contact group and two dynamic lead-out ends; the number of the dynamic contact parts is four, two dynamic contact parts are arranged on each side of the suction part along the Y-axis direction, the dynamic contact part is provided with a dynamic contact point, the two dynamic lead-out ends are respectively located on the two sides of the connecting part along the Y-axis direction, and the two dynamic contact parts and the dynamic lead-out end located on the same side of the armature are electrically connected; the static contact group comprises a static contact corresponding to each dynamic contact part, each static contact is provided with a static lead-out end and a static contact point corresponding to the dynamic contact point of the corresponding dynamic contact part, and each static lead-out end and the two dynamic lead-out ends are integrally formed with the base.

[0015] Based on the technical scheme one, there is also a technical scheme ten, in the technical scheme ten and related embodiments, the width direction of the dynamic contact part is the Y-axis direction; the dynamic contact part is sequentially provided with a first section, a second section and a third section along the length direction thereof, the third section is provided with a dynamic contact point; the first section is fixedly connected with the insulating body, the width of the third section is greater than the width of the second section, and the width of the second section gradually increases along the direction close to the third section.

[0016] Based on the technical scheme ten, there is also a technical scheme eleven, in the technical scheme eleven and related embodiments, in the projection plane perpendicular to the Y-axis direction, the projection of the third section is covered by the projection of the insulating wall.

[0017] From the above description of the utility model and its preferred embodiments, compared with the prior art, the technical scheme and the preferred embodiments of the utility model have the following beneficial effects due to the following technical means:

[0018] In the technical solution one and the preferred embodiments thereof, since in the projection plane perpendicular to the Y-axis direction, the part of the projection of the movable contact portion not covered by the projection of the insulating wall is located in the projection of the insulator, compared with the prior art one, the shortest distance between the movable contact portion and the armature, the electrical gap between the movable contact portion and the armature, and the insulation between the movable contact portion and the armature are increased by the cooperation of the insulating wall and the insulator, and the isolation between the strong electric part (movable contact portion) and the weak electric part (armature) is realized; since the projection of the insulator at least partially overlaps the projection of the insulating wall and the overlapping part is located in the projection of the groove, the groove is arranged to make the insulator occupy a small space in the interval between the armature and the movable contact portion along the Y-axis direction, and to increase the electrical gap between the movable contact portion and the armature without improving the structure of the insulating wall, so that the relay occupies a small space in the Y-axis direction, and therefore, compared with the prior art two, the relay has a smaller size in the Y-axis direction.

[0019] In the technical solution two and the preferred embodiments thereof, the insulator is provided with a cooperation portion and a separation portion connected as a whole, the cooperation portion fills the groove, and the separation portion separates the armature and the movable contact portion along the Y-axis direction and is arranged at the edge of the armature; compared with the scheme in which the separation portion and the cooperation portion simultaneously fill the groove, a larger groove needs to be arranged on the armature to simultaneously accommodate the separation portion and the cooperation portion, the length of the groove along the length direction of the armature is longer, and the insulator occupies a larger part on the armature, so that the scheme has a smaller magnetic material part than the present scheme when the size of the armature is the same and the volume is the same, and therefore, the armature has a poorer magnetic conductive performance than the present scheme when the size of the armature is the same and the volume is the same, and the armature of the present scheme has a better magnetic conductive performance; the interval is formed between the insulating wall and the separation portion, and the projection in the projection plane perpendicular to the length direction of the armature at least partially overlaps, which can avoid the 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 projection of the insulating wall and the projection of the separation portion in 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 interval between the armature and the movable contact portion along the Y-axis direction, so that the relay as a whole occupies a small space in the Y-axis direction.

[0020] In the third aspect and the preferred embodiments, the area of the groove opening is greater than the area of the groove bottom in the projection plane perpendicular to the Y-axis direction, compared with the case where the area of the groove opening is less than or equal to the area of the groove bottom, the volume of the groove is smaller, and the gap between the insulating wall and the partition is formed, and the projection of the projection plane perpendicular to the length direction of the armature at least partially overlaps. The volume of the groove is smaller, and the influence of the matching portion on the magnetic conductivity of the armature is minimized. In addition, the area of the groove opening being greater than the area of the groove bottom also makes the matching portion 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 present technical solution can increase the insulation between the armature and the movable contact portion while minimizing the influence on the magnetic conductivity of the armature.

[0021] The fourth aspect and the preferred embodiments are the preferred embodiments of the relay of the present application. The connecting portion of the armature is injection molded with the insulator, and the armature and the insulator are combined into one whole through combined injection molding, thereby ensuring the action reliability of the whole movable part. At the same time, the combined injection molding process can improve the insulation by simply improving the armature, without increasing the process and the number of components.

[0022] In the fifth aspect and the preferred embodiments, the two sides of the attracting portion in the thickness direction are respectively provided with the first face and the second face which are away from each other. The first face is suitable for being attached to the magnetic pole portion. The groove only penetrates the second face. On the one hand, the part of the projection of the movable contact portion which 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 movable contact portion and the armature is changed from the straight-line distance between the movable contact portion and the armature to the shortest distance between the movable contact portion and the end of the matching portion close to the first face of the armature, thereby increasing the electrical gap. On the other hand, the closer the armature is to the magnetic pole portion, the higher the density of the magnetic induction lines is when the coil is energized. The groove is only opened on the second face, i.e., only on the side of the armature away from the magnetic pole portion, and is not easy to affect the attracting force of the magnetic pole portion on the armature, thereby ensuring the action reliability of the relay.

[0023] In the sixth aspect and the preferred embodiments, the two sides of the attracting portion in the thickness direction are respectively provided with the first face and the second face which are away from each other. The first face is suitable for being attracted to or away from the corresponding magnetic pole portion. The groove penetrates the first face and the second face. Therefore, the shortest electrical gap between the movable contact portion and the armature is longer, thereby further improving the insulation.

[0024] In the seventh aspect and the preferred embodiments, the housing includes a base and a shell. The base and the shell are fixedly connected to form a cavity suitable for accommodating the movable part. The shell is provided with a top wall perpendicular to the Z-axis direction. Each insulating wall abuts or is fixedly connected to the top wall. The insulating wall can be used as a limiting structure in the Z-axis direction between the base and the shell. In addition, the insulating wall can increase the insulation between the armature and the movable contact portion, and can also omit the design of other limiting structures in the Z-axis direction on the shell, thereby simplifying the structure.

[0025] In the eighth aspect and the preferred embodiments thereof, when the insulating walls are arranged on the base, each insulating wall abuts against the top wall, the movable part is arranged on the base during assembly, and the insulating walls are kept away from the movable part, and then the shell is fixed to the base, so that the keeping away of the insulating walls from the movable part is within the visual range during assembly, and the keeping away is controllable, the requirement for assembly precision is lower, the risk of interference between the insulating walls and the movable part is reduced, the size of the assembly gap is reduced, and the relay is facilitated to be miniaturized. When the insulating walls are arranged on the shell, each insulating wall is fixed to the top wall, and the shell is limited in the X, Y and Z axial directions by the insulating walls and the base, so that no other limiting structure is arranged between the base and the shell, the shell is simpler to process, and the strength of the shell is facilitated to be improved to prevent deformation of the relay during welding on the circuit board.

[0026] The ninth aspect and the preferred embodiments thereof are preferred embodiments of the relay of the present application, in which each static lead-out end and each dynamic lead-out end are injection molded with the base, and the relay is facilitated to be miniaturized.

[0027] In the tenth aspect and the preferred embodiments thereof, the structure of the dynamic contact part increases the area of the dynamic spring, and the increase in the width of the third section increases the welding area of the dynamic contact, so that the volume of the dynamic contact is increased, and the load capacity of the relay is improved; and the gradual increase in the width of the second section in the direction close to the third section ensures the strength balance transition of the dynamic contact part.

[0028] In the eleventh aspect and the preferred embodiments thereof, in the projection plane perpendicular to the Y axis direction, the projection of the third section is covered by the projection of the insulating wall, so that a larger electrical gap is ensured between the dynamic contact and the armature. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 FIG. 1 is a schematic view of the relay of Embodiment 1 of the present application;

[0031] Figure 2 FIG. 2 is a schematic view of the fixed part of Embodiment 1 of the present application;

[0032] Figure 3 FIG. 3 is a schematic view of the movable part of Embodiment 1 of the present application;

[0033] Figure 4 FIG. 4 is a schematic view of the armature of Embodiment 1 of the present application;

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

[0035] Figure 6 A top view of the housing for the embodiment 1 of the present application; Figure 5 A sectional view in the A-A direction;

[0036] Figure 7 A schematic view of the armature for the embodiment 2 of the present application;

[0037] Figure 8 A sectional view for the embodiment 2 of the present application;

[0038] Figure 9 A schematic view of the housing for the embodiment 3 of the present application.

[0039] Explanation of the main reference numerals:

[0040] Fixed portion 100; Coil assembly 10; Pole portion 11; Signal terminal 12; Static contact 20; Static lead-out terminal 21; Static contact point 22; Housing 30; Base 31; Mounting groove 311; Housing 32; Top wall 321; Insulating wall 33; Moving lead-out terminal 70; First positioning portion 71; Movable portion 200; Armature 40; Attraction portion 41; Groove 411; First face 412; Second face 413; Connecting portion 42; Moving contact portion 50; First section 51; Second section 52; Third section 53; Moving contact point 54; Second positioning portion 55; Insulator 60; Insulating portion 61; Cooperating portion 62; Partition portion 63; Moving lead-out terminal 70; First positioning portion 71. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are preferred embodiments of the present application, and should not be regarded as exclusion of other embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] In the claims and the description of the embodiments other than the embodiments, the terms "X-axis direction", "Y-axis direction" and "Z-axis direction" only mean that the features with one of the above directions are perpendicular to the features 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" introduced 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 up and down.

[0043] In the claims, the specification, and the drawings of the present application, terms such as "first", "second", and "third" are used merely to distinguish one object or implementation from another, and do not imply a particular order or sequence except where expressly recited based on claims or specification language specifically utilized to describe the order or sequence. Except where otherwise expressly indicated, all numerical quantities in this description are assumed to "approximate values" that can vary between about 0.1% and 10%, and, sometimes, between about 1% and about 5%.

[0044] In the claims, the specification, and the drawings of the present application, terms such as "first", "second", and "third" are used merely to distinguish one object or implementation from another, and do not imply a particular order or sequence except where expressly recited based on claims or specification language specifically utilized to describe the order or sequence. Except where otherwise expressly indicated, all numerical quantities in this description are assumed to "approximate values" that can vary between about 0.1% and 10%, and, sometimes, between about 1% and about 5%.

[0045] In the claims, the specification, and the drawings of the present application, terms such as "first", "second", and "third" are used merely to distinguish one object or implementation from another, and do not imply a particular order or sequence except where expressly recited based on claims or specification language specifically utilized to describe the order or sequence. Except where otherwise expressly indicated, all numerical quantities in this description are assumed to "approximate values" that can vary between about 0.1% and 10%, and, sometimes, between about 1% and about 5%.

[0046] In the claims, the specification, and the drawings of the present application, terms such as "first", "second", and "third" are used merely to distinguish one object or implementation from another, and do not imply a particular order or sequence except where expressly recited based on claims or specification language specifically utilized to describe the order or sequence. Except where otherwise expressly indicated, all numerical quantities in this description are assumed to "approximate values" that can vary between about 0.1% and 10%, and, sometimes, between about 1% and about 5%.

[0047] Example 1

[0048] Referring to Figure 1 , Figure 1 A relay is shown, which includes a fixed portion 100 and a movable portion 200.

[0049] Referring to Figures 1-2 , the fixed portion 100 includes a coil assembly 10, a static contactor group, two dynamic lead-out ends 70 and a housing 30.

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

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

[0052] The moving lead-out end 70 is provided with a first positioning part 71.

[0053] Referring to Figure 1 The shell 30 comprises a base 31 and a housing 32. The base 31 is cuboid in shape, with the length direction being the X-axis direction, the width direction being the Y-axis direction, and the height direction being the Z-axis direction. Referring to Figure 2 The base 31 is injection molded with the coil assembly 10 and the four static lead-out ends 21 and the two moving lead-out ends 70, and the four static contacts 22 are arranged close to the four corners of the top surface of the base 31, so that the coil assembly 10 is fixed relative to the shell 30. In this embodiment, the two first positioning parts 71 are located in the middle of the top surface of the base 31 along the X-axis direction, and the two first positioning parts 71 are arranged along the Y-axis direction. The two magnetic pole parts 11 are located at the two ends of the base 31 along the X-axis direction. The signal terminal 12, the moving lead-out end 70, and the static lead-out end 21 all extend out of the bottom surface of the base 31. Each magnetic pole part 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 shell 30 is provided with an insulating wall 33. In this embodiment, each magnetic pole part 11 is provided with two insulating walls 33 extending along the X-axis direction and perpendicular to the Y-axis direction on both sides along the Y-axis direction. The insulating walls 33 can separate the static contacts 22 and the magnetic pole parts 11 along the Y-axis direction. The insulating walls 33 extend to the edges of the base 31. The base 31 is provided with a mounting groove 311 opening upward between the two magnetic pole parts 11.

[0054] The housing 32 is fixedly connected with the base 31 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 adapted to abut against the top wall 321.

[0055] The movable part 200 moves relative to the shell 30 and has at least a movement component in the Z-axis direction. Referring to Figure 3 The movable part 200 comprises an armature 40, a moving contact part 50, and an insulating body 60. The armature 40 and the moving contact part 50 are fixedly connected to the insulating body 60 and are spaced apart along the Y-axis direction. The armature 40 is provided with a groove 411 on the side close to the moving contact part 50 along the Y-axis direction, and the insulating body 60 fills the groove 411.

[0056] Specifically, referring to Figure 4, the width direction of the armature 40 is the Y-axis direction; the armature 40 is sequentially provided with an attracting portion 41, a connecting portion 42 and an attracting portion 41 along the length direction thereof, each attracting portion 41 is respectively provided with a groove 411 with openings facing away from each other on both sides along the Y-axis direction; in the embodiment, the attracting portion 41 is respectively provided with a first face 412 and a second face 413 facing away from each other on both sides along the thickness direction thereof; the first face 412 is suitable for being attached to the magnetic pole portion 11; the groove 411 only penetrates the second face 413. On the projection plane perpendicular to the Y-axis direction, the area of the groove mouth of the groove 411 is greater than the area of the groove bottom, and the shape of the groove 411 can be arc-shaped, trapezoidal or other shapes.

[0057] Referring to Figure 3 , the number of the moving contact portions 50 is four, that is, the number of the moving contact portions 50 and the number of the insulating walls 33 correspond to the attracting portions 41, each attracting portion 41 is respectively provided with two moving contact portions 50 on both sides along the Y-axis direction, that is, the moving contact portions 50 are spaced apart from the corresponding attracting portions 41 along the Y-axis direction, the width direction of the moving contact portion 50 is the Y-axis direction; the moving contact portion 50 is sequentially provided with a first segment 51, a second segment 52 and a third segment 53 along the length direction thereof, the third segment 53 is provided with a moving contact point 54, that is, the moving contact portion 50 is provided with the moving contact point 54, the moving contact point 54 can be closed or disconnected with the corresponding stationary contact point 22; the first segment 51 is fixedly connected with the insulator 60, in the embodiment, the first segments 51 of the two moving contact portions 50 located on the same side of the attracting portion 41 along the Y-axis direction are integrated and form a second positioning portion 55 suitable for being matched with the first positioning portion 71, the width of the third segment 53 is greater than the width of the second segment 52, and the width of the second segment 52 gradually increases along the direction close to the third segment 53. Each moving contact point 54 corresponds to each stationary contact point 22.

[0058] Referring to Figure 3 , the insulator 60 is fixedly connected with each moving contact portion 50 and the armature 40, in the embodiment, the insulator 60 is provided with an insulating portion 61 injection molded away from the connecting portion 42 and the one end of the first segment 51 of each moving contact portion 50 away from the third segment 53, the second positioning portion 55 extends out of the insulating portion 61 to be fixedly connected with the first positioning portion 71, the insulator 60 is further provided with a matching portion 62 and a separation portion 63 integrated, the matching portion 62 fills the groove 411, the separation portion 63 connects the matching portion 62 and the insulating portion 61, the separation portion 63 separates the armature 40 and the moving contact portion 50 along the Y-axis direction and is located at the edge of the armature 40, the separation portion 63 extends along the X-axis direction, and the one end of the separation portion 63 close to the matching portion 62 extends to the middle of the matching portion 62 along the X-axis direction.

[0059] Referring to Figures 1-2 and Figures 5-6The middle part of the movable part 200 along the X-axis direction is adapted to be accommodated in the mounting groove 311, the two dynamic leading ends 70 are respectively located on both sides of the connecting part 42 along the Y-axis direction, and the two dynamic contact parts 50 and the dynamic leading ends 70 located on the same side of the armature 40 along the Y-axis direction are electrically connected, the insulating wall 33 can be inserted into the interval between the corresponding dynamic contact part 50 and the attraction part 41, and the two attraction parts 41 correspond to the two magnetic pole parts 11 respectively; in the projection plane perpendicular to the Y-axis direction, the part of the projection of the dynamic contact part 50 not covered by the projection of the insulating wall 33 is located in the projection of the insulator 60, and the projection of the insulator 60 at least partially overlaps the projection of the insulating wall 33, and the overlapping part is located in the projection of the groove 411, the projection of the third section 53 of the dynamic contact part 50 is covered by the projection of the insulating wall 33; wherein the interval is formed between the insulating wall 33 and the partition part 63, and the projection in the projection plane perpendicular to the length direction of the armature 40 at least partially overlaps, and one end of the groove 411 close to the first surface 412 is lower than the dynamic contact part 50.

[0060] In the embodiment, since in the projection plane perpendicular to the Y-axis direction, the part of the projection of the dynamic contact part 50 not covered by the projection of the insulating wall 33 is located in the projection of the insulator 60, compared with the prior art one, the shortest distance between the dynamic contact part 50 and the armature 40 is increased by the cooperation of the insulating wall 33 and the insulator 60, the electrical gap between the dynamic contact part 50 and the armature 40 is increased, the insulation between the dynamic contact part 50 and the armature 40 is increased, and the isolation between the strong electric part (dynamic contact part 50) and the weak electric part (armature 40) is realized; since the projection of the insulator 60 at least partially overlaps the projection of the insulating wall 33, and the overlapping part is located in the projection of the groove 411, the setting of the groove 411 makes the space occupied by the insulator 60 in the interval between the armature 40 and the dynamic contact part 50 along the Y-axis direction small, and makes it possible to increase the electrical gap between the dynamic contact part 50 and the armature 40 without improving the structure of the insulating wall 33, so that the overall relay occupies small space along the Y-axis direction, therefore, compared with the prior art two, the relay has smaller size along the Y-axis direction.

[0061] In this embodiment, the insulator 60 is provided with a matching portion 62 and a separation portion 63 which are integrated, the matching portion 62 fills the groove 411, and the separation portion 63 separates the armature 40 and the movable 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 separation portion 63 and the matching portion 62 simultaneously fill the groove 411, a larger groove needs to be arranged on the armature 40 to simultaneously accommodate the separation portion 63 and the matching portion 62, the length of the groove 411 along the length direction of the armature 40 is longer in this scheme, the insulator 60 occupies more part on the armature 40, and the magnetic material part is less when the size of the armature 40 is the same and the volume is the same in this scheme compared with the present scheme, so the magnetic conductive performance of the armature 40 is worse in this scheme compared with the present scheme when the size of the armature 40 is the same and the volume is the same, and the magnetic conductive performance of the armature 40 is better in the present scheme. The interval is formed between the insulating wall 33 and the separation portion 63, and the projection on the projection plane perpendicular to the length direction of the armature 40 at least partially overlaps, which can avoid interference between the movable portion 200 and the insulating wall 33 when the movable portion 200 moves, and on the other hand, compared with the scheme in which the projection of the insulating wall 33 and the separation portion 63 on the projection plane perpendicular to the length direction of the armature 40 is staggered along the Y-axis direction, the insulating wall 33 and the insulator 60 occupy less space along the Y-axis direction in the interval between the armature 40 and the movable contact portion 50, so as to further make the relay whole occupy less space along the Y-axis direction.

[0062] In this embodiment, on the projection plane perpendicular to the Y-axis direction, the area of the slot opening of the groove 411 is greater than the area of the groove bottom, compared with the scheme in which the area of the slot opening of the groove 411 is less than or equal to the area of the groove bottom, the volume of the groove 411 is smaller, and the interval is formed between the insulating wall 33 and the separation portion 63, and the projection on the projection plane perpendicular to the length direction of the armature 40 at least partially overlaps, and the volume of the groove 411 is smaller, which minimizes the influence of the matching portion 62 on the magnetic conductive performance of the armature 40, and the area of the slot opening of the groove 411 is greater than the area of the groove bottom, which makes the matching portion 62 more concentrated on the edge of the armature 40, so as to minimize the influence on the middle part of the armature 40 and further reduce the influence on the magnetic conductive performance of the armature 40, therefore, the present technical scheme can increase the insulation between the armature 40 and the movable contact portion 50 under the premise of minimizing the influence on the magnetic conductive performance of the armature 40.

[0063] In this embodiment, the connecting portion 42 of the armature 40 is injection molded with the insulator 60, the armature 40 and the insulator 60 are combined into one whole through combined injection molding, and the movement reliability of the whole movable portion is ensured. At the same time, because the combined injection molding process is adopted, the insulation can be improved through simple improvement of the armature 40, without increasing the process and the parts.

[0064] In the embodiment, the two sides of the thickness direction of the suction part 41 are respectively provided with the first surface 412 and the second surface 413 which are away from each other; the first surface 412 is suitable for being attached to the magnetic pole part 11; the groove 411 only penetrates the second surface 413, on the one hand, it ensures that the part of the projection of the moving contact part 50 which is not covered by the projection of the insulation wall 33 is located in the projection of the insulator 60, the shortest electrical gap between the moving contact part 50 and the armature 40 is changed from the straight line distance between the moving contact part 50 and the armature 40 to the shortest distance between the moving contact part 50 and the end of the fitting part 62 which is close to the first surface 412 of the armature 40, the electrical gap is increased, on the other hand, since the armature 40 is closer to the position of the magnetic pole part 11, the density of the magnetic induction lines is higher when the coil is excited, the groove 411 only opens on the second surface 413, that is, only opens on the side of the armature 40 which is away from the magnetic pole part 11, and it is not easy to affect the suction force of the magnetic pole part 11 on the armature 40, thereby ensuring the reliability of the relay action.

[0065] In the embodiment, the shell 30 includes the base 31 and the 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 which is perpendicular to the Z-axis direction, each insulation wall 33 abuts or is fixedly connected to the top wall 321, the insulation wall 33 can be used as a limiting structure in the Z-axis direction between the base 31 and the outer shell 32, and also makes the insulation wall 33 not only increase the insulation between the armature 40 and the moving contact part 50, but also omit the design of other limiting structures in the Z-axis direction on the outer shell 32, thereby simplifying the structure.

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

[0067] In the embodiment, when the insulation wall 33 is arranged on the base 31, each insulation wall 33 abuts the top wall 321, during assembly, the movable part 200 is mounted on the base 31, and the insulation wall 33 is avoided from the movable part 200, then the outer shell 32 is fixedly connected with the base 31, so that during assembly, the avoidance of the insulation wall 33 from the movable part 200 is in the visual range, the avoidance is controllable, the assembly precision requirement is lower, the risk of interference between the insulation wall 33 and the movable part 200 is reduced, the assembly gap size is reduced, and the miniaturization of the relay is facilitated.

[0068] In the embodiment, the structural design of the moving contact part 50 increases the area of the moving spring sheet, the increase of the width of the third section 53 increases the welding area of the moving contact point 54, thereby facilitating the increase of the volume of the moving contact point 54 and the improvement of the load capacity of the relay; the gradual increase of the width of the second section 52 in the direction close to the third section 53 ensures the strength balance transition of the moving contact part 50.

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

[0070] Embodiment 2

[0071] Embodiment 2 is basically the same as Embodiment 1, except that, referring to Figures 7-8 , the groove 411 in Embodiment 2 penetrates the first face 412 and the second face 413.

[0072] In the embodiment, the two sides of the attraction part 41 in the thickness direction are respectively provided with the first face 412 and the second face 413 which are away from each other; the first face 412 is suitable for being attracted to or away from the corresponding magnetic pole part 11; the groove 411 penetrates the first face 412 and the second face 413, so that the shortest electrical gap between the movable contact part 50 and the armature 40 is longer, and the insulation is further improved.

[0073] Embodiment 3

[0074] Embodiment 3 is basically the same as Embodiment 1, except that, referring to Figure 9 , the insulating wall 33 is arranged on the shell 32, and each insulating wall 33 is fixedly connected with the top wall 321.

[0075] In the embodiment, when the insulating wall 33 is arranged on the shell 32, each insulating wall 33 is fixedly connected with the top wall 321, so that the shell 32 can be limited in the X, Y and Z axis directions between the insulating wall 33 and the base 31, thereby eliminating the need to arrange other limiting structures between the base 31 and the shell 32, the shell 30 is simpler to process, and is beneficial to strengthen the strength of the shell 32 and prevent the deformation of the relay when it is welded on the circuit board.

[0076] The above description and embodiment are used to explain the protection scope of the utility model, but do not constitute the limitation of the protection scope of the utility model. Through the inspiration of the utility model or the above embodiment, the modification, equivalent replacement or other improvement of the utility model embodiment or part of the technical features can be obtained by the ordinary skilled in the art combining with the common knowledge, the ordinary technical knowledge and / or the prior art in the field through logical analysis, reasoning or limited test, and should be included in the protection scope of the utility model.

Claims

1. A relay characterized by, The application relates to a magnetic component, which comprises a movable part (200) and a shell (30), the movable part (200) moving relative to the shell (30) and having at least a movement component in the Z-axis direction; the movable part (200) comprises an armature (40), a movable contact (50) and an insulator (60), the armature (40) and the movable contact (50) being fixed to the insulator (60) and being spaced apart along the Y-axis direction, the armature (40) being provided with a groove (411) on the side close to the movable contact (50) along the Y-axis direction, and the groove (411) being filled with the insulator (60). The shell (30) is provided with an insulating wall (33) extending into the space between the armature (40) and the movable contact (50). In the projection plane perpendicular to the Y-axis direction, the part of the projection of the movable contact (50) not covered by the projection of the insulating wall (33) is located in the projection of the insulator (60), and the projection of the insulator (60) at least partially overlaps the projection of the insulating wall (33), and the overlapping part is located in the projection of the groove (411).

2. A relay according to claim 1, characterised in that The insulator (60) is provided with a matching part (62) and a separation part (63) connected as a whole, the matching part (62) fills the groove (411), the separation part (63) separates the armature (40) and the movable contact (50) along the Y-axis direction and is arranged on the edge of the armature (40); the insulating wall (33) and the separation part (63) form a space and the projection in the projection plane perpendicular to the length direction of the armature (40) at least partially overlaps.

3. A relay according to claim 1 or 2, characterised in that In the projection plane perpendicular to the Y-axis direction, the area of the slot opening of the groove (411) is greater than the area of the groove bottom.

4. A relay according to claim 2, wherein the magnetic field generated by the coil is substantially uniform across the gap. The application further comprises a coil assembly (10); the width direction of the armature (40) is the Y-axis direction; the armature (40) is sequentially provided with an attracting part (41), a connecting part (42) and an attracting part (41) along the length direction thereof, each attracting part (41) is provided with the groove (411), the connecting part (42) is injection molded with the insulator (60), the number of the movable contacts (50) and the number of the insulating walls (33) correspond to the number of the attracting parts (41), the movable contact (50) and the corresponding attracting part (41) are spaced apart along the Y-axis direction; the coil assembly (10) is fixed relative to the shell (30) and is provided with two magnetic pole parts (11) corresponding to the two attracting parts (41) and arranged along the X-axis direction.

5. A relay according to claim 4, wherein the magnetic circuit is formed by a plurality of magnetic bodies, and the magnetic bodies are arranged in a ring shape. The two sides of the thickness direction of the attracting part (41) are respectively provided with the first face (412) and the second face (413) facing away from each other; the first face (412) is adapted to attract or move away from the corresponding magnetic pole part (11); and the groove (411) only penetrates the second face (413).

6. A relay according to claim 4, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The two sides of the thickness direction of the attracting part (41) are respectively provided with the first face (412) and the second face (413) facing away from each other; the first face (412) is adapted to attract or move away from the corresponding magnetic pole part (11); and the groove (411) penetrates the first face (412) and the second face (413).

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

8. A relay according to claim 7, wherein the relay is a latching relay. When the insulating wall (33) is arranged on the base (31), each insulating wall (33) is in abutment with the top wall (321); when the insulating wall (33) is arranged on the housing (32), each insulating wall (33) is in fixed connection with the top wall (321).

9. A relay according to claim 7, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). Further comprising a static contact group and two dynamic lead-out terminals (70); the number of the dynamic contact portions (50) is four, two dynamic contact portions (50) are arranged on each side of the suction portion (41) along the Y-axis direction, the dynamic contact portion (50) is provided with a dynamic contact point (54), the two dynamic lead-out terminals (70) are respectively located on the two sides of the connecting portion (42) along the Y-axis direction, and the two dynamic contact portions (50) and the dynamic lead-out terminals (70) located on the same side of the armature (40) along the Y-axis direction are electrically connected; the static contact group comprises a static contact (20) corresponding to each dynamic contact portion (50), each static contact (20) is provided with a static lead-out terminal (21) and a static contact point (22) corresponding to the dynamic contact point (54) of the corresponding dynamic contact portion (50), and each static lead-out terminal (21) and the two dynamic lead-out terminals (70) are injection molded with the base (31).

10. A relay according to claim 1, wherein The width direction of the dynamic contact portion (50) is the Y-axis direction; the dynamic contact portion (50) is sequentially provided with a first section (51), a second section (52) and a third section (53) along the length direction, the third section (53) is provided with a dynamic contact point (54); the first section (51) is fixedly connected with the insulating body (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 along the direction close to the third section (53).

11. A relay according to claim 10, wherein the relay is a latching relay. In 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).

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