CN215527584U - Relay - Google Patents

Abstract

The application discloses relay relates to the switch electrical technology field. The relay comprises a shell and a circuit board arranged in the shell, wherein a wiring terminal is further arranged in the shell and comprises a contact plate and a first pin arranged on the contact plate, the first pin is inserted into the circuit board and welded with the circuit board, and a supporting platform which is supported by the contact plate is correspondingly arranged in the shell. The stability of the electrical connection can be improved.

Description

Relay

Technical Field

The application relates to the technical field of switch electricity, in particular to a relay.

Background

A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount meets a predetermined requirement. It has an interactive relationship between the control system and the controlled system. Generally, a relay is applied to an automatic control circuit, is an automatic switch element having an isolation function, is widely applied to remote control, remote measurement, communication, automatic control, mechatronics and power electronic equipment, and is one of the most important control elements.

In the prior art, a circuit board of the relay is usually connected with a wiring terminal through a soft connecting wire, and due to the adoption of a multi-stage wiring form, the stability of electric connection at a joint is poor due to the limitation of factors such as a space structure during wiring, and the long-time stable operation of the relay is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a relay, can promote the stability of electricity connection.

The embodiment of the application is realized as follows:

the embodiment of the application provides a relay, including the casing, and set up circuit board in the casing, still be provided with binding post in the casing, binding post includes the contact plate and sets up first pin on the contact plate, first pin is inserted and is located in the circuit board, and with the circuit board welding, correspond in the casing be provided with the contact plate supports supporting of holding and holds the platform.

Optionally, a threaded hole is formed in the contact plate, and a fastening piece in threaded connection with the threaded hole is further arranged on the contact plate.

Optionally, the relay further includes a plug terminal disposed in the housing, the plug terminal includes a second pin connected to the circuit board and a wire insertion hole for wiring, and a conductive member connected to the second pin is disposed in the wire insertion hole.

Optionally, the first pins and the plane where the contact plate is located have a preset included angle, the number of the first pins is at least two, and a connector is arranged between every two adjacent first pins.

Optionally, the casing includes base and upper cover of mutual lock, be provided with a plurality of protruding muscle on the base, be provided with first buckle on the protruding muscle, the correspondence is provided with the notch on the upper cover, so that first buckle block in the notch.

Optionally, a second buckle is further arranged on the convex rib, the first buckle and the second buckle are respectively located on two opposite sides of the convex rib, and a notch corresponding to the convex rib is formed in the circuit board, so that the convex rib is clamped in the notch, and the second buckle abuts against one side face of the circuit board.

Optionally, a boss is arranged on the bottom surface of the base, one side surface of the circuit board, which is away from the second buckle, abuts against the boss, so that a gap is formed between the bottom surface and the circuit board, and a plurality of first heat dissipation holes are further arranged on the bottom surface.

Optionally, be provided with on the upper cover and be used for the protection binding post's protection casing, the protection casing includes the lid, and sets up linking arm on the lid, the protection casing passes through the linking arm with the upper cover is rotated and is connected.

Optionally, a protrusion is arranged on the connecting arm, a groove is correspondingly arranged on the upper cover, and when the protective cover and the upper cover are closed, the protrusion is clamped in the groove.

Optionally, the supporting table is of a hollow structure, and the upper cover is provided with a plurality of second heat dissipation holes.

The beneficial effects of the embodiment of the application include:

the relay that this application embodiment provided, through the casing to and the circuit board of setting in the casing, be favorable to simplifying the wiring form, and the stability when promoting the connection. Through set up binding post in the casing to be connected electrically between binding post and the circuit board, thereby insert the required circuit with the relay. Binding post includes the contact plate and sets up the first pin on the contact plate for the contact plate is connected through being connected between first pin and the direct circuit board, has avoided the trouble of extra wiring between binding post and the circuit board, simultaneously, through with first pin and circuit board welding, when guaranteeing wiring stability, can play spacing effect to the contact plate, prevents that the contact plate from rocking at will. In addition, through the abutting table which is arranged in the shell and abutted by the contact plate, when the contact plate is connected with a wire in the access circuit, the effect of stably supporting the contact plate can be achieved, and meanwhile, the effect of further limiting the supporting plate can be achieved, so that the stability of the connecting part is ensured. By adopting the mode, the stability of electric connection can be improved, and the safety in use is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a relay provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a base and a circuit board provided in the embodiment of the present application;

fig. 3 is a schematic structural diagram of a connection terminal provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a plug terminal provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of a base according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of an upper cover according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a circuit board according to an embodiment of the present disclosure;

fig. 8 is a second schematic structural diagram of a relay according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a protective cover according to an embodiment of the present application;

fig. 10 is a partial enlarged view of a portion a in fig. 9.

Icon: 100-a relay; 110-a housing; 112-a base; 1122-holding stage; 1124-convex ribs; 1124 a-first clasp; 1124 b-a second clasp; 1126-bottom surface; 1126 a-first louvre; 1128-boss; 114-an upper cover; 1142-notch; 1144-grooves; 1146-a second heat dissipation hole; 120-a circuit board; 122 — first weld hole; 124-notch; 126-second weld hole; 130-a connection terminal; 132-a contact plate; 1322-threaded holes; 134-first pin; 136-a connector; 138-a fastener; 140-a plug terminal; 142-a second pin; 144-a wire insertion hole; 150-a protective cover; 152-a cover; 1522-via holes; 1524-shielding sheet; 154-connecting arm; 1542-a rotating shaft; 1544-bump.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, 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, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The soft connecting wires are connected with the circuit board and the wiring terminals respectively and then connected with incoming wires or outgoing wires through the wiring terminals. Because of the adoption of a multi-stage wiring form and the limitation of factors such as a space structure and the like during wiring, the stability of electric connection at a joint is poor, and the long-time stable operation of the relay is influenced. In view of the above problems, the present application proposes the following scheme to improve the stability of the electrical connection of the relay.

Referring to fig. 1, fig. 2 and fig. 3, the present embodiment provides a relay 100, which includes a housing 110 and a circuit board 120 disposed in the housing 110, wherein a connection terminal 130 is further disposed in the housing 110, the connection terminal 130 includes a contact plate 132 and a first pin 134 disposed on the contact plate 132, the first pin 134 is inserted into the circuit board 120 and welded to the circuit board 120, and a supporting platform 1122 supporting against the contact plate 132 is correspondingly disposed in the housing 110.

Specifically, the contact plate 132 of the terminal 130 is connected to the circuit board 120 through the first pin 134 by the circuit board 120 and the terminal 130 disposed in the housing 110, so as to connect the relay 100 to a desired circuit. For example, as shown in fig. 6, a first welding hole 122 is formed in the circuit board 120, and the first pin 134 can be inserted into the first welding hole 122, so that the first pin 134 is welded to the circuit board 120, connection by a flexible connecting wire is avoided, and connection stability is improved. When it is desired to connect the relay 100 into a circuit, the wires in the circuit need only be electrically connected to the contact plate 132.

In addition, a supporting platform 1122 supporting the contact plate 132 is further disposed in the housing 110, so that the contact plate 132 can be clamped at the supporting platform 1122 to ensure the stability of the position of the contact plate 132, and prevent the contact plate 132 from shaking randomly, which is beneficial to improving the stability of the connection between the wire and the contact plate 132 and improving the reliability during use.

The relay 100 provided by the embodiment of the application is beneficial to simplifying the wiring form and improving the stability during connection through the shell 110 and the circuit board 120 arranged in the shell 110. The relay 100 is connected to a desired circuit by providing the terminal 130 in the housing 110 to facilitate electrical connection between the terminal 130 and the circuit board 120. The wiring terminal 130 comprises a contact plate 132 and a first pin 134 arranged on the contact plate 132, so that the contact plate 132 is connected with the direct circuit board 120 through the first pin 134, the trouble of extra wiring between the wiring terminal 130 and the circuit board 120 is avoided, meanwhile, the first pin 134 is welded with the circuit board 120, the wiring stability is guaranteed, meanwhile, the limiting effect can be achieved on the contact plate 132, and the contact plate 132 is prevented from shaking randomly. In addition, by providing the abutting table 1122 abutted by the contact plate 132 in the housing 110, when the contact plate 132 is connected to the wire connected to the circuit, the contact plate 132 can be stably supported, and the supporting plate can be further limited, so as to ensure the stability of the connection. By adopting the mode, the stability of electric connection can be improved, and the safety in use is ensured.

As shown in fig. 2 and 3, a threaded hole 1322 is formed in the contact plate 132, and a fastening member 138 threadedly coupled to the threaded hole 1322 is further formed in the contact plate 132.

Specifically, when it is desired to connect the circuit breaker to an electrical circuit, the wires in the circuit can be compressed between the fastener 138 and the contact plate 132 to form the desired electrical connection. In alternative embodiments of the present application, the fastening member 138 may be a screw integrally formed with the gasket, or a screw and gasket cooperating with each other to ensure the stability of the connection.

As shown in fig. 1 and 4, the relay 100 further includes a plug terminal 140 disposed in the housing 110, the plug terminal 140 including a second pin 142 connected to the circuit board 120, and a wire insertion hole 144 for wire connection, a conductive member connected to the second pin 142 being disposed in the wire insertion hole 144.

Illustratively, the plug terminal 140 passes through the second pin 142 connected to the circuit board 120, so as to be soldered and fixed to the circuit board 120 through the second soldering hole 126 on the circuit board 120, thereby ensuring the stability of the connection. In addition, the plug terminal 140 may be a flip-chip type plug terminal or a combination type plug terminal. When the elastic sheet type plug terminal is used, the conductive member connected to the second pin 142 and disposed in the plug hole 144 may be an elastic sheet, so as to ensure a desired point connection relationship by the elastic supporting force of the elastic sheet. When a combination type socket terminal is used, the conductive member connected to the second pin 142 and disposed in the socket hole 144 may be a conductive sleeve so that a pin mated therewith can be inserted to achieve a desired point connection relationship. Therefore, the wiring process can be faster and more efficient, the wiring speed can be improved, and the operation difficulty can be reduced.

As shown in fig. 3, the first pins 134 have a predetermined included angle with the plane of the contact plate 132, at least two first pins 134 are provided, and a connecting member 136 is disposed between adjacent first pins 134.

Specifically, the preset included angle between the first pin 134 and the plane where the contact plate 132 is located is between 80 ° and 120 °, for example, the preset included angle may be set to values of 80 °, 90 °, 100 °, or 120 ° according to the arrangement form of the holding stage 1122 and the arrangement position of the first welding hole 122 on the circuit board 120. In addition, in order to ensure the structural strength between the first pins 134 and the circuit board 120, two or three first pins 134 may be provided, and adjacent pins are connected by the connector 136, so as to enhance the structural strength of the first pins 134 and prevent deformation under stress. In addition, when the first pin 134 is connected and positioned with the circuit board 120, the connecting member 136 can be attached to the circuit board 120, so that the first pin 134 and the circuit board 120 can be conveniently welded and positioned.

As shown in fig. 1, 5 and 6, the housing 110 includes a base 112 and an upper cover 114 that are fastened to each other, the base 112 is provided with a plurality of ribs 1124, the ribs 1124 are provided with a first fastener 1124a, and the upper cover 114 is correspondingly provided with a notch 1142, so that the first fastener 1124a is fastened in the notch 1142.

Specifically, through set up a plurality of ribs 1124 on base 112, so that rib 1124 extends to upper cover 114 place region, and first buckle 1124a that sets up on rib 1124 is located upper cover 114 place region department, when the lock between base 112 and upper cover 114, elastic deformation takes place for rib 1124 atress, after upper cover 114 lock targetting in place, correspond between first buckle 1124a and notch 1142, and rib 1124 resumes elastic deformation, so that first buckle 1124a block is in notch 1142, thereby guarantee that stable lock is fixed between base 112 and the upper cover 114.

It should be noted that, in the embodiment of the present application, the number of the ribs 1124 is not specifically limited, and for example, three or four ribs 1124 may be provided, as long as the connection stability can be ensured.

As shown in fig. 5 and 7, the rib 1124 is further provided with a second buckle 1124b, the first buckle 1124a and the second buckle 1124b are respectively located at two opposite sides of the rib 1124, the circuit board 120 is provided with a notch 124 corresponding to the rib 1124, so that the rib 1124 is clamped in the notch 124, and the second buckle 1124b abuts against a side surface of the circuit board 120.

Specifically, the first buckle 1124a and the second buckle 1124b are respectively located at two opposite sides of the rib 1124, so that the first buckle 1124a is matched with the upper cover 114, and the second buckle 1124b is matched with the circuit board 120. Illustratively, the first catch 1124a faces the outer side of the relay 100, and the second catch 1124b faces the inner side of the relay 100, when the cover 114 and the base 112 are engaged, so that the catches engage with the notches 1142 of the cover 114. The second hook 1124b faces the inside of the relay 100, and facilitates the alignment of the circuit board 120 mounted in the base 112.

Through set up the breach 124 that corresponds with protruding muscle 1124 on circuit board 120, when loading circuit board 120 in base 112, make breach 124 and protruding muscle 1124 cooperate to play limiting displacement to the mounting plane of circuit board 120, prevent that circuit board 120 from rocking about. In addition, by arranging the second buckle 1124b on the rib 1124, when the circuit board 120 is loaded in place, the second buckle 1124b abuts against a side surface of the circuit board 120 to prevent the circuit board 120 from moving up and down, so that the circuit board 120 is limited in all directions to ensure the stability of the installation position of the circuit board 120.

As shown in fig. 5, a boss 1128 is disposed on the bottom surface 1126 of the base 112, a side surface of the circuit board 120 facing away from the second buckle 1124b abuts against the boss 1128, so that a gap is formed between the bottom surface 1126 and the circuit board 120, and a plurality of first heat dissipating holes 1126a are further disposed on the bottom surface 1126.

Specifically, a plurality of bosses 1128 are dispersedly disposed on the bottom surface 1126 of the base 112, and when the circuit board 120 is loaded in the base 112, a side surface of the circuit board 120 away from the second buckle 1124b abuts against the bosses 1128, so that the circuit board 120 is stably placed at a specific position. Moreover, due to the supporting function of the boss 1128, a gap is formed between the bottom surface 1126 and the circuit board 120, so that heat generated by the circuit board 120 can be dissipated in time. In addition, the plurality of first heat radiation holes 1126a are formed in the bottom face 1126, so that heat dissipated to the gap is exchanged through the first heat radiation holes 1126a, and the stability of the temperature in the relay 100 in the use process is ensured.

As shown in fig. 8 and 9, a protective cover 150 for protecting the connection terminal 130 is disposed on the upper cover 114, the protective cover 150 includes a cover body 152, and a connection arm 154 disposed on the cover body 152, and the protective cover 150 is rotatably connected to the upper cover 114 through the connection arm 154.

Specifically, in the use state, the protective cover 150 covers the upper cover 114 to protect the connection terminal 130 and prevent the connection position of the connection terminal 130 from being interfered by the external environment. Meanwhile, the potential safety hazard caused by mistaken touch of related personnel can be prevented, and by adopting the mode, the connection stability and the use safety can be guaranteed. The shield 150 is rotatably connected to the upper cover 114 by a connecting arm 154, and when it is necessary to determine the connection relationship at the connection terminal 130, the shield 150 can be rotated to expose the connection terminal 130, so as to confirm the connection relationship.

As shown in fig. 6 and 10, the connecting arm 154 is provided with a protrusion 1544, the upper cover 114 is correspondingly provided with a groove 1144, and when the shield 150 and the upper cover 114 are covered, the protrusion 1544 is engaged with the groove 1144.

Specifically, by providing the protrusion 1544 on the connecting arm 154, when the connecting arm 154 rotates relative to the upper cover 114, a certain abutting force is provided between the connecting arm 154 and the upper cover 114 through the protrusion 1544, because when the protecting cover 150 rotates, the protecting cover 150 can maintain the stability of the current position without being subjected to an external force, and thus, the protecting cover 150 is prevented from rotating randomly. When the protection cover 150 and the upper cover 114 are closed, the protrusion 1544 is clamped in the groove 1144 to ensure the stability of the relative position between the protection cover 150 and the upper cover 114, avoid relative rotation caused by external factors such as vibration and the like, and ensure the safety and stability in use. In addition, a rotating shaft 1542 is disposed on the connecting arm 154 to facilitate the connecting arm 154 to be rotatably connected to the upper cover 114 via the rotating shaft 1542.

As shown in fig. 9, the cover 152 is provided with through holes 1522, and the through holes 1522 correspond to the contact plates 132; the cover body 152 is further provided with a shielding sheet 1524, and the shielding sheet 1524 is located on one side of the contact plate 132.

In the above manner, the fastener 138 is rotated by a screwdriver, so that the connection state between the wire and the contact plate 132 is adjusted by the fastener 138. Meanwhile, due to the fact that the through hole 1522 and the fastener 138 are arranged at a certain depth, potential safety hazards caused by the fact that relevant personnel touch the conductive portion by mistake can be prevented. In addition, the shielding piece 1524 is disposed on the cover body 152, so that the protective cover 150 has a space for passing a wire, and the finger can be prevented from touching the wiring terminal 130 by mistake, thereby ensuring the safety in use.

As shown in fig. 5 and 6, the holding base 1122 has a hollow structure, and the upper cover 114 is provided with a plurality of second heat dissipation holes 1146. By adopting the above manner, when the contact plate 132 is matched with the holding platform 1122, on the premise of ensuring the structural strength of the holding platform 1122, the heat dissipation effect at the contact plate 132 is improved, and the temperature at the wiring position is prevented from being too high. In addition, by providing the second heat dissipation hole 1146 on the upper cover 114, the heat generated in the relay 100 can exchange heat with the outside better through the second heat dissipation hole 1146, so as to ensure the safety and stability of the breaker during use, prevent the temperature from being too high, and prolong the service life of the breaker.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The relay is characterized by comprising a shell and a circuit board arranged in the shell, wherein a wiring terminal is further arranged in the shell and comprises a contact plate and a first pin arranged on the contact plate, the first pin is inserted into the circuit board and welded with the circuit board, and a supporting platform which is supported by the contact plate is correspondingly arranged in the shell.

2. The relay according to claim 1, wherein the contact plate is provided with a threaded hole, and the contact plate is further provided with a fastener screwed with the threaded hole.

3. The relay according to claim 1 or 2, further comprising a plug terminal disposed in the housing, the plug terminal including a second pin connected to the circuit board, and a wire insertion hole for wiring, a conductive member connected to the second pin being disposed in the wire insertion hole.

4. The relay according to claim 1 or 2, wherein the first pins and the plane of the contact plate have a preset included angle, the number of the first pins is at least two, and a connecting piece is arranged between the adjacent first pins.

5. The relay according to claim 1, wherein the housing includes a base and an upper cover that are fastened to each other, the base is provided with a plurality of ribs, the ribs are provided with first fasteners, and the upper cover is correspondingly provided with notches, so that the first fasteners are fastened in the notches.

6. The relay according to claim 5, wherein the rib is further provided with a second buckle, the first buckle and the second buckle are respectively located at two opposite sides of the rib, the circuit board is provided with a notch corresponding to the rib, so that the rib is clamped in the notch, and the second buckle abuts against one side surface of the circuit board.

7. The relay according to claim 6, wherein a boss is disposed on a bottom surface of the base, a side surface of the circuit board away from the second clip abuts against the boss, so that a gap is formed between the bottom surface and the circuit board, and a plurality of first heat dissipation holes are disposed on the bottom surface.

8. The relay according to any one of claims 5 to 7, wherein a protective cover for protecting the terminal is provided on the upper cover, the protective cover includes a cover body, and a connecting arm provided on the cover body, and the protective cover is rotatably connected to the upper cover through the connecting arm.

9. The relay according to claim 8, wherein the connecting arm is provided with a protrusion, the upper cover is correspondingly provided with a groove, and when the protective cover and the upper cover are closed, the protrusion is clamped in the groove.

10. The relay according to any one of claims 5 to 7, wherein the holding table is a hollow structure, and the upper cover is provided with a plurality of second heat dissipation holes.

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