Relay

Abstract

The utility model discloses a relay, which comprises a base, a shell, a movable spring connecting terminal and a movable part, the shell sleeves the base along a first direction and is fixedly connected with the base; the movable spring connecting terminal is fixedly connected with the base and provided with a connecting part, the connecting part is exposed out of the side wall of one side of the base in the second direction and the first surface of the base in the first direction, and the movable part moves relative to the base in the direction perpendicular to the second direction and at least has a motion component in the first direction and comprises a movable spring connected with the connecting part. The housing is provided with an abdicating groove at least corresponding to the position of the connecting part exposed out of the side wall of the base. The relay is small in size and stable and reliable in operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a relay field, concretely relates to a relay. BACKGROUND

[0002] Some small relays of prior art generally include fixed part, movable part and shell, the fixed part includes base, coil assembly fixed to the base, static contact piece fixed to the base and dynamic spring connecting terminal fixed to the base, the two ends of the core of coil assembly respectively protrude from the two ends of the length direction of the upper surface of the base, the static contact piece is equipped with static contact point and static lead-out end electrically connected with static contact point, static contact point is distributed in the two ends of the length direction of the upper surface of the base, and dynamic spring connecting terminal is equipped with connecting part exposed to the upper surface of the base.The movable part includes armature, dynamic spring and insulator, the dynamic spring is located in the width direction of the armature, and the middle part of the length direction of the armature and the dynamic spring is at least partially included by the insulator to form a whole, the two ends of the length direction of the armature are matched with the core of coil assembly in the form of flip plate, the middle part of the length direction of the dynamic spring is equipped with hinge part, the hinge part is fixed to the connecting part, the two ends of the dynamic spring are respectively equipped with two dynamic contact points corresponding to static contact point, the two dynamic contact points are normally open end dynamic contact point and normally closed end dynamic contact point respectively, and the shell is sleeved on the fixed part and movable part outside.In prior art, the connecting part is completely wrapped in the plastic of the base to reduce the extrusion of the shell to the connecting part, but it is found in practice that the relay of prior art still has problems such as large size and poor running stability. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned defects or problems in the background art, and provides a relay, which has small size and stable and reliable operation.

[0004] To achieve the above-mentioned purpose, the utility model and its preferred embodiments adopt the following technical solutions, but the embodiments are not limited to the following solutions:

[0005] The first technical scheme and its related embodiments provide a relay, which includes a base, a shell, a dynamic spring connecting terminal, and a movable part; the shell is sleeved on the base along a first direction and is fixed to the base; the dynamic spring connecting terminal is fixed to the base and has a connecting part, the connecting part is exposed to a side wall of the base along a second direction perpendicular to the first direction and a first surface of the base along the first direction, the movable part moves perpendicular to the second direction relative to the base and has at least a movement component in the first direction, the movable part includes a dynamic spring connected to the connecting part, and the shell is provided with a clearance slot at least corresponding to the position where the connecting part is exposed to the side wall of the base.

[0006] Based on technical solution one, technical solution two is also provided, in technical solution two and its related embodiments, the side of the yielding slot is a closed structure; in the projection plane perpendicular to the second direction, the area of the slot opening of the yielding slot is greater than the area of the slot bottom.

[0007] Based on technical solution two, technical solution three is also provided, in technical solution three and its related embodiments, the slot side wall of the yielding slot is inclined relative to the second direction, and the yielding slot is a square slot.

[0008] Based on any one of technical solutions one to three, technical solution four is also provided, in technical solution four and its related embodiments, the movable part further includes an armature and an insulator, the width direction of the armature is the second direction, the middle part of the length direction of the armature and the moving spring is at least partially wrapped by the insulator, the first surface of the base is recessed to form a containing slot suitable for containing the movable part, and the moving spring connection terminal is located on the slot side wall on one side of the containing slot along the second direction.

[0009] Based on technical solution four, technical solution five is also provided, in technical solution five and its related embodiments, the top of the shell opposite to the first surface is further provided with an abutting portion connected with the side wall of the yielding slot near the yielding slot, and the abutting portion is further adapted to abut the end face of the slot side wall of the containing slot

[0010] Based on technical solution five, technical solution six is also provided, in technical solution six and its related embodiments, the number of abutting portions is at least two, and the at least two abutting portions are located on both sides of the shell along the second direction.

[0011] Based on technical solution four, technical solution seven is also provided, in technical solution seven and its related embodiments, a coil assembly is further included, which is fixed to the base, the coil assembly is provided with two magnetic pole portions exposed on the first surface of the base and arranged along the third direction, the third direction is perpendicular to the first direction and the second direction; the middle part of the length direction of the armature is provided with a joint portion injection molded with the insulator, and the two ends of the length direction of the armature are respectively provided with an attraction portion corresponding to the magnetic pole portion; the attraction portion and the joint portion are integrated; the top of the shell is provided with a reinforcing portion corresponding to one end of the joint portion close to each attraction portion.

[0012] Based on technical solution seven, technical solution eight is also provided, in technical solution eight and its related embodiments, the reinforcing portion extends along the second direction and connects the two side walls of the shell opposite along the second direction.

[0013] Based on technical solution seven, there is also technical solution nine, and in technical solution nine and the related embodiments thereof, the number of the moving springs and the moving spring connecting terminals is two, the two moving springs are located on the two sides of the armature along the second direction, the two moving spring connecting terminals are located on the two sides of the base along the second direction, and the two connecting parts are located on the two slot side walls opposite to each other along the second direction; the insulator is provided with an insulating part injection molded with the engaging part and the moving spring, and a separation part for separating the attraction part and the moving spring, and the top of the shell is further provided with an insulating wall protruding into the attraction part and the moving spring, and the separation part and the insulating wall are spaced apart from each other along the third direction.

[0014] Based on technical solution nine, there is also technical solution ten, and in technical solution ten and the related embodiments thereof, the projection of the separation part and the insulating wall on a projection plane perpendicular to the length direction of the armature at least partially overlaps; and the insulating wall extends to the side wall of the shell perpendicular to the third direction along the third direction.

[0015] Based on technical solution nine, there is also technical solution eleven, and in technical solution eleven and the related embodiments thereof, the moving spring is provided with a positioning part adapted to protrude from one side of the insulating part along the second direction, and the positioning part is adapted to be fixedly connected with the connecting part; and the top of the shell is provided with a protruding part fixedly connected with the side wall where the accommodation slot is located, corresponding to the positioning part.

[0016] Based on technical solution one, there is also technical solution twelve, and in technical solution twelve and the related embodiments thereof, the moving spring connecting terminal is provided with a first bending section, a second bending section, and a pin for external electrical connection, the two ends of the second bending section are integrally connected with the first bending section and the pin respectively, the first bending section forms the connecting part, the second bending section is provided with a first side surface perpendicular to the second direction and exposed on one side of the base along the second direction, and a gap is formed between the first bending section and the second bending section.

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

[0018] The applicant found through continuous observation, experiment and research that the reason for causing the technical problem of "the relay in the prior art is large in size and poor in running stability" in the prior art is that in the prior art, the connecting portion needs to be wrapped in the plastic of the base, so the width of the base is increased, which is not conducive to the miniaturization of space, and although the plastic of the base has a certain buffering and fixing effect, the shell still has a certain extrusion on the connecting portion. When the connecting portion is extruded due to thermal expansion of the shell plastic in a high-temperature environment, the dynamic spring hinge counterforce changes, the relay operating voltage and release voltage change, the dynamic spring hinge counterforce changes when the connecting portion is extruded in a high-temperature environment, which affects the operating voltage of the product in a high-temperature environment, and in an extreme case, the relay cannot operate. If the dynamic spring and the dynamic spring connecting terminal are fixed after the movable part, deformation (such as bending deformation towards the inside of the relay) of the connecting portion will cause the hinge part fixed with the connecting portion to be twisted laterally, stress concentration occurs, and in the mechanical durability test of the movable part, fatal defects such as separation of the welding point or breakage of the hinge may occur. Therefore, the position of the connecting portion not only affects the quality of the fixation of the dynamic spring and the dynamic spring connecting terminal of the movable part, but also seriously affects the consistency of the counterforce and electrical parameters of the relay, thereby causing unstable operation of the relay.

[0019] In the technical solution one and the preferred embodiment thereof, the connecting portion is exposed to the side wall of the base on one side in the second direction and the first surface of the base in the first direction, which can effectively reduce the plastic of the relay in the second direction, and is conducive to the miniaturization design of the relay. The shell is provided with a relief groove corresponding to the position where the connecting portion is exposed to the side wall of the base, which avoids the problem of extrusion and deformation of the connecting portion caused by the exposure of the outer side of the connecting portion to the shell, especially avoids the extrusion of the connecting portion caused by the assembly, glue curing and high-temperature environment of the shell, effectively guarantees the flatness of the connecting portion, avoids the inclination problem of the connecting portion caused by the extrusion of the shell, avoids the changes of the counterforce of the hinge part of the dynamic spring and the electrical parameters of the relay caused by the changes of the flatness of the connecting portion, improves the first pass rate in the product process and the stability of the relay during operation, and also avoids the lateral bending and stress concentration of the dynamic spring caused by the inclination of the connecting portion after being fixed with the dynamic spring and being extruded, thereby effectively improving the mechanical life of the product and further guaranteeing the stability of the relay during operation.

[0020] In the technical solution two and the preferred embodiment thereof, the relief groove is a closed structure, which has the least influence on the strength of the shell compared with the notch formed by pulling the side wall of the shell to the opening position of the shell. In the projection plane perpendicular to the second direction, the area of the groove opening of the relief groove is greater than the area of the groove bottom, which is convenient for demolding during mold forming, simplifies the mold structure, and realizes one-time demolding.

[0021] In the third aspect and the preferred embodiments thereof, the slot side wall of the accommodation slot is inclined relative to the second direction, and the accommodation slot is a square slot, which is more conducive to production and processing than an arc-shaped slot.

[0022] In the fourth aspect and the preferred embodiments thereof, the first surface of the base is recessed to form an accommodation groove suitable for accommodating the movable part, and the movable spring connection terminal is located on the groove side wall on one side of the accommodation groove along the second direction, which is conducive to reducing the height of the relay along the first direction.

[0023] In the fifth aspect and the preferred embodiments thereof, when the relay is subjected to high-temperature welding such as wave soldering or reflow soldering, the gas in the space of the housing will expand due to heat, which will press outward on the four sides and the top surface of the housing. At the same time, the plastic of the housing will soften to a certain extent at high temperatures, and the strength will decrease. The accommodation slot will also correspondingly reduce the strength of the housing. When the strength of the housing is insufficient, the high temperature during welding will cause the surface of the housing to bulge severely, and the housing may be cracked due to extrusion, which will seriously affect the sealing performance of the relay. In the present technical solution, the top of the housing opposite the first surface is further provided with an abutting portion connected with the side wall where the accommodation slot is located, which effectively increases the strength of the top of the housing and the side wall. The abutting portion is also suitable for abutting the end surface of the groove side wall of the accommodation groove, which not only limits the housing along the first direction without interfering with the movement of the movable part, but also effectively increases the strength of the housing. Moreover, the abutting portion is arranged on the housing, which can reduce the excess plastic on the base and effectively reduce the extrusion deformation of the plastic on the metal due to the difference in thermal expansion coefficient between the plastic and the metal at high temperatures, thereby improving the consistency of the performance of the relay.

[0024] In the sixth aspect and the preferred embodiments thereof, the number of abutting portions is at least two, and the at least two abutting portions are located on both sides of the housing along the second direction, which further ensures the reliability of the limitation of the housing and further increases the strength of the housing.

[0025] In the seventh aspect and the preferred embodiments thereof, the middle part of the armature in the length direction is provided with an engaging portion injection molded with the insulator. Due to the presence of the insulator, a step is formed between the engaging portion and the insulator. When the movable part moves, the movable space at this position will be larger due to the presence of the step. In the present solution, the top of the housing is provided with a reinforcing portion corresponding to one end of each engaging portion close to the engaging portion, which can make full use of the space above the engaging portion to effectively increase the strength of the top of the housing.

[0026] In the eighth aspect and the preferred embodiments thereof, the reinforcing portion extends along the second direction and connects the two opposite side walls of the housing along the second direction, and the two opposite side walls of the housing along the second direction are provided with accommodation slots. The above arrangement further increases the strength of the top of the housing and increases the strength of the side wall of the housing, thereby further effectively increasing the strength of the housing.

[0027] In the technical solution nine and the preferred embodiments thereof, the two movable springs and the two movable spring connection terminals are arranged, the two sides of the movable part in the second direction are more balanced, the gap between the magnetic attraction part of the armature and the movable spring is utilized, and an insulating wall is added at the top of the shell. The presence of the insulating wall can not only avoid the situation that, when the contact end breaks the load, the contact material splashes between the armature and the magnetic pole part due to the electric arc, causing the relay to fail to reliably act, but also improve the strength of the shell. In addition, the insulating wall is formed on the shell, which can reduce the excess plastic on the base compared to forming the base, effectively reduce the extrusion deformation of the plastic on the metal due to the different thermal expansion coefficients between the plastic and the metal at high temperatures, and improve the consistency of the relay performance.

[0028] In the technical solution ten and the preferred embodiments thereof, the projection of the partition part and the insulating wall on the projection plane perpendicular to the length direction of the armature at least partially overlaps, which is more conducive to reducing the occupied space of the relay in the second direction than the projection of the partition part and the insulating wall on the projection plane perpendicular to the length direction of the armature being staggered in the second direction; the insulating wall extends to the side wall of the shell perpendicular to the third direction, thereby increasing the strength of the side wall of the shell and further increasing the strength of the shell.

[0029] In the technical solution eleven and the preferred embodiments thereof, the movable spring is provided with a positioning part adapted to protrude from one side of the insulating part in the second direction, and the positioning part is adapted to be fixedly connected with the connecting part, thereby achieving the limiting of the two sides of the movable part, and also forming a step between the positioning part and the insulating part of the insulating body, so that there is a larger space above the positioning part. The shell corresponds to the positioning part and is provided with a protruding part fixedly connected with the side wall where the accommodation groove is located, thereby fully utilizing the space above the positioning part. Since the positioning part is located at the middle of the length direction of the base, the protruding part is also correspondingly arranged at the middle position of the length direction of the shell, and corresponds to the middle position of the length direction of the side wall where the accommodation groove is located after the shell is injection molded. The arrangement of the protruding part can reduce the deformation of the side wall where the accommodation groove is located and increase the strength of the side wall where the accommodation groove is located. In addition, since the protruding part is arranged at the top of the shell, the strength of the top of the shell can also be increased, thereby effectively improving the overall strength of the shell, improving the consistency of the parameters before and after the shell is sleeved, reducing the scrap cost, and ensuring the stability of the electrical parameters in a high-temperature environment.

[0030] In the technical solution twelve and the preferred embodiments thereof, the opening outward gap is formed between the first bending section and the second bending section. On the one hand, the gap can fill more plastic during injection molding, thereby increasing the connection strength of the movable spring connection terminal and the base. On the other hand, the arrangement of the gap is more conducive to adjusting the positions of the first bending section and the second bending section, so that the outer side surface of the connecting part is located outside the first side surface, and the side surface of the fixed part after being fixedly connected in the second direction is more flat. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme 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 also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0032] Figure 1 It is a schematic view of the relay of the embodiment of the present application.

[0033] Figure 2 It is a schematic view of the hidden shell of the relay of the embodiment of the present application.

[0034] Figure 3 It is a schematic view of the moving spring connecting terminal of the embodiment of the present application.

[0035] Figure 4 It is a partial sectional view of the shell of the embodiment of the present application. Figure 1

[0036] Figure 5 It is a sectional view of the shell of the embodiment of the present application. Figure 2

[0037] Figure 6 It is a top view of the relay of the embodiment of the present application.

[0038] Figure 7 It is a sectional view in A-A direction. Figure 6

[0039] Figure 8 It is an enlarged schematic view of A part of the above. Figure 7

[0040] Figure 9 It is a sectional view in B-B direction. Figure 6

[0041] Figure 10 It is a sectional view in C-C direction. Figure 6

[0042] Figure 11 It is a partial sectional view of the relay of the embodiment of the present application.

[0043] Main drawing mark explanation:

[0044] ​​​​​​Fixed part 100; Coil assembly 10; Magnetic pole part 11; Signal terminal 12; Static contact 20; Static lead-out end 21; Static contact point 22; Moving spring connecting terminal 30; First bending section 31; Connecting part 311; Second bending section 32; First side surface 321; Pin 33; Notch 34; Base 40; First surface 41; Containing groove 42; Abutting surface 43; Movable part 200; Armature 50; Joint part 51; Attraction part 52; Moving spring 60; Moving contact 61; Positioning part 62; Insulator 70; Insulating part 71; Partition part 72; Shell 80; Letting go slot 81; Abutting part 82; Reinforcing part 83; Insulating wall 84; Projecting part 85. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model, and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0046] In the claims, the description and the above drawings of the utility model, unless otherwise explicitly limited, the terms such as 'first','second' or 'third' are used to distinguish different objects, and are not used to describe a particular order.

[0047] In the claims, the description and the above drawings of the utility model, unless otherwise explicitly limited, for the orientation words, such as the terms 'center', 'transverse','vertical', 'horizontal','vertical', 'top', 'bottom', 'inner', 'outer', 'upper', 'lower', 'front', 'back', 'left', 'right', 'clockwise', 'counterclockwise' indicate the orientation or position relationship based on the orientation and position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and not to indicate or imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, so it cannot be understood as limiting the specific protection scope of the utility model.

[0048] In the claims, the description and the above drawings of the utility model, unless otherwise explicitly limited, such as the terms 'fixedly connected' or 'fixedly connected', should be understood broadly, that is, any connection mode without displacement relationship and relative rotation relationship between the two, that is, it includes non-detachable fixed connection, detachable fixed connection, integration and fixed connection through other devices or elements.

[0049] In the claims, the description and the above drawings of the utility model, such as the terms 'including', 'having' and their variants, are intended to be 'including but not limited to'.

[0050] In the claims and the specification, the terms "first direction", "second direction" and "third direction" only mean that the features having one of the above directions are perpendicular to the features having another direction, and do not require that they must be implemented according to the "first direction", "second direction" and "third direction" introduced in the embodiments. In the embodiments, the third direction is perpendicular to the second direction and also perpendicular to the first direction. Exemplarily, the first direction can be the up-down direction, the second direction can be the left-right direction, and the third direction can be the front-rear direction.

[0051] Referring to Figure 1 , Figure 1 A relay is shown, which comprises a fixed part 100, a movable part 200 and a housing 80.

[0052] Referring to Figure 2 , Figure 2 A schematic view of the fixed part 100 and the movable part 200 is shown, the fixed part 100 comprises a coil assembly 10, a static contact group, two movable spring connecting terminals 30 and a base 40.

[0053] The coil assembly 10 belongs to the prior art, the coil assembly 10 comprises a U-shaped core, an enameled wire and a coil holder, two parallel sections of the U-shaped core extend along a first direction and are arranged along a third direction, a connecting section connecting the two parallel sections of the U-shaped core extends along the third direction and is wound with the enameled wire, the coil holder comprises two barrier walls arranged at intervals along the third direction, a winding space is formed between the two barrier walls, and the two parallel sections of the U-shaped core respectively extend out of the two barrier walls; in actual application, the two barrier walls are injection molded on the two parallel sections of the U-shaped core, and the part of the U-shaped core extending out of the barrier wall forms a magnetic pole part 11, so that the coil assembly 10 is provided with two magnetic pole parts 11 arranged along the third direction, in the embodiments, the coil holder comprises a winding shaft extending along an X-axis direction and the barrier walls respectively arranged at two ends of the winding shaft, and the coil holder is further provided with a signal terminal 12.

[0054] The static contact group comprises at least two static contacts 20, in the embodiments, the static contact group comprises four static contacts 20, each static contact 20 is provided with a static lead-out end 21 and a static contact point 22.

[0055] Referring to Figure 3 , Figure 3A schematic view of the moving spring connecting terminal 30 is shown, the moving spring connecting terminal 30 is provided with a first bending section 31, a second bending section 32 and a pin 33 for external electrical connection, two ends of the second bending section 32 are respectively connected to the first bending section 31 and the pin 33, the first bending section 31 forms a connecting part 311 connected to the moving spring 60 below, exemplarily, the first bending section 31 is Z-shaped, the first bending section 31 is provided with two extension sections extending along the third direction and a bending part connecting the two extension sections, the connecting part 311 is formed on the extension section away from the second bending section 32; the second bending section 32 is provided with a first side surface 321 perpendicular to the second direction, exemplarily, the second bending section 32 is provided with a bending part connected to the first bending section 32, a bending part connected to the pin 33 and an extension section extending along the first direction, the first side surface 321 is formed on the extension section of the second bending section 32, a notch 34 opening outward is formed between the first bending section 31 and the second bending section 32, in this embodiment, the notch 34 is formed between the extension section of the first bending section 31 and the bending part of the second bending section 32. The pin 33 extends along the first direction.

[0056] Referring to Figure 2 , the base 40 is in the shape of a cuboid as a whole, the length direction thereof is the third direction, the width direction thereof is the second direction and the height direction thereof is the first direction, the base 40 is provided with a first surface 41 on one side thereof along the first direction, the first surface 41 is also the upper surface, referring to Figures 6-7 , the first surface 41 of the base 40 is recessed to form a receiving groove 42 opening upward and suitable for receiving the movable part 200, referring to Figure 2The base 40 is injection molded with the coil assembly 10 and the four static lead-out terminals 21 and the two dynamic spring connection terminals 30, wherein the two magnetic pole portions 11 are exposed on a first surface 41 of the base 40 and are arranged along a third direction, the four static contact points 22 are each exposed on the first surface 41 and are arranged close to four corners of the first surface 41 respectively, the dynamic spring connection terminals 30 are located on the groove side walls of the accommodation grooves 42 on one side along a second direction, the two dynamic spring connection terminals 30 are respectively located on two sides of the base 40 along the second direction and the two connecting portions 311 are respectively located on two groove side walls of the accommodation grooves 42 opposite along the second direction, the connecting portions 311 are exposed on a side wall of the base 40 on one side along the second direction and the first surface 41 of the base 40 along the first direction, the second bending section 32 is provided with a first side surface 321 exposed on the side wall of the base 40 on one side along the second direction, and the accommodation grooves 42 are located between the static contact points 22, the magnetic pole portions 11 and the connecting portions 311, wherein the end face of the groove side wall of the accommodation groove 42 is further provided with an abutting face 43 close to the connecting portion 311 for abutting with the abutting portion 82 in the following, the signal terminal 12, the pin 33 of the dynamic spring connection terminal 30 and the static lead-out terminal 21 each extend out of the bottom surface of the base 40, and each magnetic pole portion 11 is further located between the two static contact points 22 on the corresponding side along the second direction. Therefore, the relay includes the coil assembly 10 fixed to the base 40, the coil assembly 10 is provided with the two magnetic pole portions 11 exposed on the first surface 41 of the base 40, and the dynamic spring connection terminal 30 is fixed to the base 40 and is provided with the connecting portion 311.

[0057] Referring to Figure 2 The movable portion 200 moves relative to the base 40 perpendicularly to the second direction and has at least a movement component along the first direction; the movable portion 200 includes the armature 50, the two dynamic springs 60 and the insulator 70. The two dynamic springs 60 are respectively located on two sides of the armature 50 along the second direction, the width direction of the armature 50 is the second direction, and the middle part of the length direction of the armature 50 and the two dynamic springs 60 are at least partially wrapped by the insulator 70 and form the movable portion 200. Referring to Figure 7 The middle part of the length direction of the armature 50 is provided with the joint portion 51 injection molded with the insulator 70, referring to Figure 2, the two ends of the length direction of the armature 50 are respectively provided with the attraction parts 52 corresponding to the magnetic pole parts 11, and the attraction parts 52 are integrated with the joint parts 51; the insulator 70 is provided with the insulation parts 71 injection molded with the joint parts 51 and the moving spring 60, and the separation parts 72 for separating the attraction parts 52 and the moving spring 60, and the separation parts 72 are perpendicular to the second direction. The two ends of the length direction of the moving spring 60 are respectively provided with the moving contacts 61 corresponding to the two static contacts 22, the two moving contacts 61 are respectively the normally open end moving contact 61 and the normally closed end moving contact 61, and the middle part of the length direction of the moving spring 60 is provided with the positioning part 62 adapted to extend from the insulation part 71 to one side of the second direction, and the positioning part 62 is adapted to be connected with the connecting part 311. In the embodiment, the positioning part 62 is welded with the connecting part 311, and the positioning part 62 is also the hinge part of the moving spring 60. Therefore, the moving spring 60 is connected with the connecting part 311 and moves perpendicularly to the second direction relative to the base 40 and has at least the movement component of the first direction.

[0058] Referring to Figures 4-5 and Figures 7-11 , the shell 80 is sleeved on the base 40 along the first direction and is fixedly connected with the base 40, referring to Figures 5-8 , the shell 80 is provided with the accommodation groove 81 at least corresponding to the positions of the connecting part 311 exposed to the side wall of the base 40, the side of the accommodation groove 81 is a closed structure, the area of the groove opening of the accommodation groove 81 is greater than the area of the groove bottom in the projection plane perpendicular to the second direction, the groove side wall of the accommodation groove 81 is inclined relative to the second direction, and the accommodation groove 81 is a square groove. Because the gas in the space of the shell 80 will be heated and expanded when the relay is subjected to high-temperature welding such as wave soldering or reflow soldering, the four sides and the top surface of the shell 80 are pressed outward. At the same time, the plastic of the shell 80 will also be softened to a certain extent at high temperature, and the strength will decrease. The arrangement of the accommodation groove 81 will also correspondingly reduce the strength of the shell 80. When the strength of the shell 80 is insufficient, the high temperature during welding will cause the surface of the shell 80 to be seriously bulged, and the shell 80 may be cracked due to extrusion, which seriously affects the sealing performance of the relay. Therefore, the structure of the shell 80 is also designed to be strengthened in the embodiment.

[0059] Specifically, the top of the shell 80 opposite to the first surface 41 is also provided with the abutting parts 82 connected with the side wall where the accommodation groove 81 is located, close to the accommodation groove 81, and the abutting parts 82 are adapted to abut the end surface of the groove side wall of the accommodation groove 42. The number of the abutting parts 82 is at least two, and the at least two abutting parts 82 are located on the two sides of the shell 80 along the second direction. In the embodiment, referring to Figure 4 and Figure 9 , the number of the abutting parts 82 is two, and the two abutting parts 82 are respectively adapted to abut the two abutting surfaces 43. Referring to Figure 10 , the top of the shell 80 is provided with the reinforcing parts 83 protruding close to one end of the joint part 51 corresponding to each attraction part 52. Referring to Figure 4The reinforcing portion 83 extends along the second direction and connects two opposite side walls of the shell 80 along the second direction. Referring to Figure 11 The top of the shell 80 further protrudes an insulation wall 84 extending between the suction portion 52 and the moving spring 60, and a spacing is formed between the partition portion 72 and the insulation wall 84 along the third direction. The projection of the partition portion 72 and the insulation wall 84 on a projection plane perpendicular to the length direction of the armature 50 at least partially overlaps, and the insulation wall 84 extends along the third direction to a side wall of the shell 80 perpendicular to the third direction. Referring to Figure 4 and Figure 7 The top of the shell 80 further protrudes a protruding portion 85 corresponding to the positioning portion 62 and fixedly connected to the side wall where the accommodation groove 81 is located.

[0060] In the embodiment, the connecting portion 311 is exposed to the side wall of the base 40 along the second direction and the first surface 41 of the base 40 along the first direction, which can effectively reduce the plastic of the relay along the second direction compared with the prior art, and is beneficial to the miniaturization design of the relay. The shell 80 is provided with the accommodation groove 81 at least corresponding to the position where the connecting portion 311 is exposed to the side wall of the base 40, which avoids the problem that the connecting portion 311 is extruded and deformed by the shell 80 due to the exposure of the outer side surface of the connecting portion 311, especially avoids the extrusion of the connecting portion 311 under the conditions of assembly, glue curing and high temperature environment, effectively guarantees the flatness of the connecting portion 311, avoids the inclination problem of the connecting portion 311 caused by the extrusion of the shell 80, avoids the changes of the counterforce of the hinge portion (the positioning portion 62) of the moving spring 60 and the electrical parameters of the relay caused by the changes of the flatness of the connecting portion 311, improves the first pass rate in the product process and the stability of the relay during operation, and also avoids the problems such as lateral bending and stress concentration of the moving spring 60 caused by the inclination of the connecting portion 311 after being extruded after being fixedly connected with the moving spring 60, thereby effectively improving the mechanical life of the product and further guaranteeing the stability of the relay during operation.

[0061] In the embodiment, the accommodation groove 81 is a closed structure, which has the least influence on the strength of the shell 80 compared with the groove with an opening end of the shell 80 formed by pulling the side wall of the shell 80 to the opening position of the shell 80, and the area of the groove opening of the accommodation groove 81 is greater than the area of the groove bottom in the projection plane perpendicular to the second direction, which is convenient for demolding during mold forming, simplifies the mold structure, and realizes one-time demolding.

[0062] In the embodiment, the groove side wall of the accommodation groove 81 is inclined relative to the second direction, and the accommodation groove 81 is a square groove, which is more conducive to production and processing compared with the arc-shaped groove side wall.

[0063] In the embodiment, the first surface 41 of the base 40 is recessed to form a receiving groove 42 suitable for accommodating the movable part 200, and the movable spring connection terminal 30 is located on the groove side wall on one side of the receiving groove 42 along the second direction, which is conducive to reducing the height of the relay along the first direction.

[0064] In the embodiment, the top of the shell 80 opposite to the first surface 41 is further provided with an abutting portion 82 connected with the side wall where the accommodation slot 81 is located, which effectively increases the strength of the top and the side wall of the shell 80, and effectively offsets the adverse effect of the opening of the accommodation slot 81 on the strength of the shell. The abutting portion 82 is also suitable for abutting the end face of the groove side wall of the receiving groove 42, which not only limits the shell 80 along the first direction without interfering with the movement of the movable part 200, but also effectively increases the strength of the shell 80, effectively offsets the adverse effect of the opening of the accommodation slot on the strength of the shell. And the abutting portion 82 is arranged on the shell 80, compared with being arranged on the base 40, the excess plastic on the base 40 can be reduced, the extrusion deformation of the plastic on the metal due to the difference in thermal expansion coefficient between the plastic and the metal at high temperature can be effectively reduced, and the consistency of the performance of the relay can be improved.

[0065] In the embodiment, the number of abutting portions 82 is at least two, and at least two abutting portions 82 are located on both sides of the shell 80 along the second direction, which further ensures the reliability of the limiting of the shell 80, and further increases the strength of the shell 80.

[0066] In the embodiment, the middle part of the armature 50 in the length direction is provided with a joint portion 51 injection molded with the insulator 70. Due to the presence of the insulator 70, there will be a step between the attraction portion 52 of the armature 50 and the insulator 70. When the movable part 200 moves, the movable space at this position will be larger due to the presence of the step. In the scheme, the top of the shell 80 is provided with a reinforcing portion 83 corresponding to one end of each attraction portion 52 close to the joint portion 51, which can make full use of the space above the attraction portion 52 to effectively increase the strength of the top of the shell 80.

[0067] In the embodiment, the reinforcing portion 83 extends along the second direction and connects the two opposite side walls of the shell 80 along the second direction. The two opposite side walls of the shell 80 along the second direction are provided with the accommodation slot 81. The above arrangement further increases the strength of the top of the shell 80, and increases the strength of the side wall of the shell 80, thereby further effectively increasing the strength of the shell 80.

[0068] In the embodiment, the two movable springs 60 and the two movable spring connection terminals 30 are arranged, and the movable part 200 is more balanced on both sides in the second direction; the gap between the attraction part 52 of the armature 50 and the movable spring 60 is utilized, and the insulating wall 84 is added at the top of the shell 80. The presence of the insulating wall 84 can not only avoid the situation that when the contact end breaks the load, the contact material splashes between the armature 50 and the magnetic pole part 11 due to the electric arc, causing the relay to fail to reliably act, but also can improve the strength of the shell 80. In addition, the insulating wall 84 is formed on the shell 80, which can reduce the excess plastic on the base 40, effectively reduce the extrusion deformation of the plastic on the metal due to the difference in the thermal expansion coefficient between the plastic and the metal at high temperature, and improve the consistency of the relay performance.

[0069] In the embodiment, the projection of the partition part 72 and the insulating wall 84 on the projection plane perpendicular to the length direction of the armature 50 at least partially overlaps, which is more conducive to reducing the occupied space of the relay in the second direction than the projection of the partition part 72 and the insulating wall 84 on the projection plane perpendicular to the length direction of the armature 50 is staggered in the second direction. The insulating wall 84 extends to the side wall of the shell 80 perpendicular to the third direction, thereby increasing the strength of the side wall of the shell 80 and further increasing the strength of the shell 80.

[0070] In the embodiment, the movable spring 60 is provided with a positioning part 62 extending from the insulating part 71 on one side in the second direction, the positioning part 62 is fixedly connected with the connecting part 311, thereby limiting the movable part 200 on both sides, and also forming a step between the positioning part 62 and the insulating part 71 of the insulating body 70, so that there is a larger space above the positioning part 62. The shell 80 is provided with a protruding part 85 fixedly connected with the side wall of the shell 80 corresponding to the relief groove 81, which fully utilizes the space. Since the positioning part 62 is located at the middle of the base 40 in the length direction, the protruding part 85 is also arranged at the middle position of the shell 80 in the length direction, and the protruding part 85 is arranged at the middle position of the side wall of the shell 80 in the length direction corresponding to the relief groove 81 after the shell 80 is injection molded. The arrangement of the protruding part 85 can reduce the deformation of the side wall of the shell 80 and improve the strength of the side wall of the shell 80. In addition, the protruding part 85 is arranged at the top of the shell, which can also increase the strength of the top of the shell 80, thereby effectively improving the overall strength of the shell 80, improving the consistency of the parameters before and after the shell 80 is set, reducing the scrap cost, and ensuring the stability of the electrical parameters in the high-temperature environment.

[0071] In the preferred embodiment, the first bending section 31 and the second bending section 32 form an outwardly opening gap 34. On the one hand, the gap 34 can fill more plastic during injection molding, thereby increasing the connection strength between the moving spring connecting terminal 30 and the base 40. On the other hand, the gap 34 is more conducive to adjusting the positions of the first bending section 31 and the second bending section 32, so that the outer side of the connecting portion 311 is located outside the first side 321, thereby making the side surface of the fixing portion 100 along the second direction more flat after being fixed.

[0072] The above description and embodiment are used to explain the scope of protection of the present application, but do not constitute a limitation on the scope of protection of the present application. Through the inspiration of the present application or the above embodiment, those skilled in the art can obtain the modification, equivalent replacement or other improvement of the embodiment of the present application or one part of the technical features by combining the common knowledge, the ordinary technical knowledge in the art and / or the prior art through logical analysis, reasoning or limited test, which should be included in the protection scope of the present application.

Claims

1. A relay characterized by, The application relates to a movable part (200) of a relay, which comprises a base (40), a shell (80), a movable spring connecting terminal (30) and the movable part (200); the shell (80) is sleeved on the base (40) along a first direction and is fixedly connected with the base (40); the movable spring connecting terminal (30) is fixedly connected with the base (40) and is provided with a connecting part (311), the connecting part (311) is exposed on a side wall of the base (40) along a second direction perpendicular to the first direction and a first surface (41) of the base (40) along the first direction, the movable part (200) moves relative to the base (40) along a direction perpendicular to the second direction and has at least a movement component along the first direction, the movable part (200) comprises a movable spring (60) connected with the connecting part (311), and the shell (80) is provided with a displacement slot (81) corresponding to a position where the connecting part (311) is exposed on the side wall of the base (40).

2. A relay according to claim 1, characterised in that The side of the displacement slot (81) is a closed structure; in a projection plane perpendicular to the second direction, the area of the slot opening of the displacement slot (81) is greater than the area of the slot bottom.

3. A relay according to claim 2, wherein the magnetic field generated by the coil is arranged to be substantially uniform across the face of the armature. The slot side wall of the displacement slot (81) is inclined relative to the second direction, and the displacement slot (81) is a square slot.

4. A relay according to any one of claims 1-3, c h a r a c t e r i s e d in that The movable part (200) further comprises an armature (50) and an insulator (70), the width direction of the armature (50) is the second direction, the middle part of the length direction of the armature (50) and the movable spring (60) is at least partially wrapped by the insulator (70), the first surface (41) of the base (40) is recessed to form a containing groove (42) suitable for containing the movable part (200), and the movable spring connecting terminal (30) is located on the groove side wall on one side of the containing groove (42) along the second 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 top of the shell (80) opposite to the first surface (41) is further provided with an abutting part (82) connected with the side wall where the displacement slot (81) is located, and the abutting part (82) is also suitable for abutting the end face of the groove side wall of the containing groove (42).

6. A relay according to claim 5, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The number of the abutting parts (82) is at least two, and the at least two abutting parts (82) are located on two sides of the shell (80) along the second direction.

7. A relay according to claim 4, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The application further comprises a coil assembly (10) fixedly connected with the base (40), the coil assembly (10) is provided with two magnetic pole parts (11) arranged along a third direction and exposed on the first surface (41) of the base (40), the third direction is perpendicular to the first direction and the second direction; the middle part of the length direction of the armature (50) is provided with an engaging part (51) injection molded with the insulator (70), and the two ends of the length direction of the armature (50) are respectively provided with an attracting part (52) corresponding to the magnetic pole part (11); the attracting part (52) is integrated with the engaging part (51); and the top of the shell (80) is provided with a reinforcing part (83) protruding from one end of the engaging part (51) corresponding to each attracting part (52).

8. A relay according to claim 7, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The reinforcing part (83) extends along the second direction and connects two side walls of the shell (80) opposite along the second direction.

9. A relay according to claim 7, wherein the magnetic circuit is formed by a magnetic core (2) and a magnetic yoke (3). The number of the moving springs (60) and the moving spring connecting terminals (30) is two, two moving springs (60) are respectively located on both sides of the armature (50) along the second direction, two moving spring connecting terminals (30) are respectively located on both sides of the base (40) along the second direction, and two connecting parts (311) are respectively located on two slot side walls opposite along the second direction of the accommodating groove (42); the insulator (70) is provided with an insulating part (71) injection molded with the engaging part (51) and the moving spring (60), and a separation part (72) for separating the attraction part (52) and the moving spring (60), the top of the shell (80) is further provided with an insulating wall (84) protruding into the attraction part (52) and the moving spring (60), and the separation part (72) and the insulating wall (84) are spaced apart along the third direction.

10. A relay according to claim 9, wherein the relay is a latching relay. The projection of the separation part (72) and the insulating wall (84) on the projection plane perpendicular to the length direction of the armature (50) at least partially overlaps; the insulating wall (84) extends along the third direction to the side wall of the shell (80) perpendicular to the third direction.

11. A relay according to claim 9, wherein the relay is a latching relay. The moving spring (60) is provided with a positioning part (62) suitable for extending from the insulating part (71) along one side of the second direction, and the positioning part (62) is suitable for being fixedly connected with the connecting part (311); the top of the shell (80) is provided with a protruding part (85) fixedly connected with the side wall of the accommodation groove (81) corresponding to the positioning part (62).

12. A relay according to claim 1, wherein The moving spring connecting terminal (30) is provided with a first bending section (31), a second bending section (32) and a pin (33) for external electrical connection, two ends of the second bending section (32) are respectively connected with the first bending section (31) and the pin (33) as a whole, the first bending section (31) forms the connecting part (311), the second bending section (32) is provided with a first side surface (321) perpendicular to the second direction and exposed on one side of the base (40) along the second direction, and a gap (34) opening outward is formed between the first bending section (31) and the second bending section (32).

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