CN218482164U - Lead wire connection structure and relay - Google Patents

Abstract

The utility model discloses a pin connection structure and relay belongs to relay technical field. The utility model discloses a lead wire connection structure and relay, lead wire connection structure are used for corresponding the connection with the binding post that is connected with the signal line with the coil pin-out, and lead wire connection structure includes the insulator, is provided with connection structure on the insulator, and connection structure includes mounting groove and installation through-hole, and binding post is used for pegging graft in the mounting groove; the installation through hole is communicated with the installation groove, and the coil leading-out pin can penetrate through the installation through hole and is inserted into the wiring terminal. In the relay assembling process, the signal wire and the wiring terminal can be fixedly connected, the wiring terminal is inserted into the mounting groove of the insulating base to form a whole, the whole is assembled with the coil leading-out pin after the relay is installed in the base, the coil leading-out pin is inserted into the corresponding wiring terminal through the corresponding mounting through hole, the overlong of the signal wire can be avoided, the assembly of other structures of the relay is interfered, and the relay assembling efficiency is improved.

Description

Lead wire connection structure and relay

Technical Field

The utility model relates to a relay technical field especially relates to a pin connection structure and relay.

Background

Relays, which have a control system (also called an input loop) and a controlled system (also called an output loop), are typically used in automatic control circuits, which are actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit has the functions of automatic regulation, safety protection, circuit conversion and the like. The high-voltage direct-current relay has the capability of processing high power, still has the characteristics of incomparable reliability and long service life and the like of the conventional relay under the harsh conditions of high voltage, large current and the like, and is widely applied to various fields, such as the field of new energy automobiles and the like.

With the continuous development of new energy technology, the development trend of new energy automobiles is small in size and high in performance, so that the duplex scheme is an important direction for future development. Based on the limitation of the structure of the product, the leading-out mode is different, and the common leading-out mode comprises connector leading-out and signal wire leading-out, but the connector occupies space, is not beneficial to the installation of the product and limits the installation space; the mode of using the signal wire to draw out can effectively utilize space, optimize the mode of drawing out.

In the prior art, the head of the signal wire is usually peeled and coated with tin, and then the signal wire is soldered with the lead-out pin of the coil by an electric soldering iron, and the connection mode has the following problems:

1) The signal wire core and the coil lead-out pin are directly soldered, so that the strength is insufficient, and the signal wire core and the coil lead-out pin are easy to fall off due to factors such as vibration and the like;

2) Foreign matters are easy to generate, and the interference relay works normally;

3) The tin head formed by welding has an irregular shape, is easy to scratch, needs to be protected by a heat-shrinkable tube, and is complex to operate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pin connection structure and relay has improved the connection stability of signal line and coil pin-out to relay assembly efficiency has been improved.

In order to realize the purpose, the following technical scheme is provided:

on the one hand, a pin connection structure is provided for lead wire connection structure for lead out the foot with the binding post that is connected with the signal line and correspond and be connected, pin connection structure includes insulating seat, be provided with connection structure on the insulating seat, connection structure includes:

the connecting terminal is used for being inserted into the mounting groove, and a solder groove for containing solder can be formed between the top surface of the connecting terminal and the side wall of the mounting groove;

and the coil leading-out pin can penetrate through the mounting through hole and is spliced with the wiring terminal.

As an alternative of the lead connection structure, a separation-preventing structure is arranged in the mounting groove and can prevent the wiring terminal from separating from the mounting groove.

As the optional scheme of the lead connection structure, the anti-disengaging structure comprises a plurality of anti-disengaging ribs protruding on the side wall of the mounting groove, and the anti-disengaging ribs can tightly support the wiring terminal.

As an alternative of the lead connecting structure, one end of the anti-falling rib close to the notch of the mounting groove is provided with a guide section;

along the depth direction of mounting groove, the protruding height of guide section for the mounting groove lateral wall increases gradually.

As the optional scheme of the lead connection structure, the tank bottom wall of the mounting groove is provided with a yielding groove correspondingly arranged with the mounting through hole, and the yielding groove is used for yielding the coil leading-out pin.

As an alternative to the lead wire connection structure, the mounting groove has an outlet from which the signal wire connected to the connection terminal can protrude out of the mounting groove.

As an alternative to the lead wire connection structure, the insulating base includes two mounting grooves, the two mounting grooves being respectively located at opposite ends of the insulating base;

the two wire outlets are respectively positioned at one end of the two mounting grooves which are deviated from each other.

As an alternative to the lead connection structure, the connection terminal has a first end and a second end opposite to each other, the first end is used for being plugged with the coil lead-out pin, the second end is used for being connected with the signal wire, and the width of the first end is larger than that of the second end;

the mounting groove comprises a positioning groove section located in the middle of the mounting groove, and the width of the positioning groove section is smaller than that of the first end.

As an alternative to the lead wire connection structure, a solder groove for accommodating solder can be formed between the top surface of the connection terminal and the side wall of the mounting groove.

On the other hand, a relay is provided, the relay includes a relay unit, the relay unit includes a relay body, a signal line and a wiring terminal, the signal line is connected with the wiring terminal, the relay body includes a coil, the coil includes a coil leading-out pin, and the coil leading-out pin is connected with the wiring terminal through the lead connecting structure as described in any one of the above.

As an alternative to the relay, the relay includes two relay units, and the lead wire connection structure is located between the relay bodies of the two relay units.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a pin connection structure and relay, in relay assembling process, can be earlier with signal line and binding post fixed connection, form a whole in inserting binding post's the mounting groove of insulator again, pack into the base at the relay after, again with this whole and coil pin-out assembly, make the coil pin-out pass the installation through-hole that corresponds and the binding post that corresponds pegs graft, can avoid the signal line overlength, interfere the assembly of other structures of relay, improve relay assembly efficiency.

Drawings

FIG. 1 is a schematic view of a signal line winding method according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a relay in an embodiment of the present invention;

FIG. 3 is a schematic view of the fitting relationship between the signal line and the rib according to the embodiment of the present invention;

fig. 4 is a first schematic structural diagram of the first housing according to the embodiment of the present invention;

fig. 5 is a second schematic structural diagram of the first housing according to the embodiment of the present invention;

FIG. 6 is a first schematic view illustrating a winding method of a signal wire when the signal wire is welded to a coil terminal according to an embodiment of the present invention;

FIG. 7 is a second schematic view illustrating a winding method of a signal wire when the signal wire is welded to a coil terminal according to an embodiment of the present invention;

FIG. 8 is a schematic view of the connection relationship between the coil and the pad in the embodiment of the present invention;

FIG. 9 is an exploded view of a coil and a spacer in an embodiment of the present invention;

FIG. 10 is a schematic view of a cushion block according to an embodiment of the present invention;

fig. 11 is a first schematic view illustrating a winding manner of a signal wire when the signal wire is connected to the coil terminal through the connection terminal and the lead connection structure according to an embodiment of the present invention;

fig. 12 is a second schematic view illustrating a winding manner of the signal wire when the signal wire is connected to the coil outlet through the connection terminal and the lead connection structure according to an embodiment of the present invention;

fig. 13 is a third schematic view illustrating a winding manner of the signal wire when the signal wire is connected to the coil terminal through the connection terminal and the lead connection structure according to the embodiment of the present invention;

fig. 14 is an exploded view of the signal line and the connection terminal, the lead connection structure, and the coil terminal according to the embodiment of the present invention;

fig. 15 is a schematic view of the connection relationship between the signal line and the connection terminal and the lead connection structure in the embodiment of the present invention;

FIG. 16 is an enlarged view of portion A of FIG. 15;

fig. 17 is a first schematic structural view of a lead connection structure according to an embodiment of the present invention;

fig. 18 is a second schematic structural diagram of the lead connection structure in the embodiment of the present invention.

Reference numerals:

1. a housing; 11. an installation space; 12. a first housing; 121. a rib is protruded; 1211. a stopper; 1212. a limiting groove; 122. an outlet groove; 123. a bearing structure; 13. a second housing; 131. a line pressing structure; 2. a relay body; 21. a coil; 211. a coil lead-out pin; 3. a signal line; 4. a wiring terminal; 51. an insulating base; 511. mounting grooves; 5111. an outlet; 5112. positioning the groove section; 512. mounting a through hole; 513. a solder bath; 5141. a first rib; 5142. a second rib; 5143. a guide section; 515. a yielding groove; 6. a cushion block; 61. and a conductive member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when used, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another, and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the prior art, signal lines are stacked in a relay shell in a disordered manner, and the signal lines are prone to shifting, shifting and the like, so that the performance of the relay is affected.

In order to solve the above-mentioned problems, as shown in fig. 1 to 18, the present embodiment provides a relay including a housing 1 and a relay unit, the housing 1 including a first case 12 and a second case 13, the second case 13 being detachably connected to the first case 12, a mounting space 11 being formed between the second case 13 and the first case 12; the relay unit comprises a relay body 2 and a signal wire 3, the relay body 2 is arranged in the installation space 11, the signal wire 3 is wound on the outer side of the relay body 2, the relay body 2 comprises a coil 21, the coil 21 comprises a coil leading-out pin 211, one end of the signal wire 3 is fixedly connected with the coil leading-out pin 211, the other end of the signal wire 3 is clamped between the first shell 12 and the second shell 13 and extends out of the installation space 11, and the signal wire 3 clamped between the first shell 12 and the second shell 13 is in a Z shape.

The signal wire 3 is wound on the outer side of the relay body 2, so that the signal wire 3 is orderly arranged in the installation space 11, the signal wire 3 is clamped through the first shell 12 and the second shell 13, the signal wire 3 clamped between the first shell 12 and the second shell 13 is in a Z shape, the signal wire 3 is effectively fixed, the problems of play, displacement and the like of the signal wire 3 can be avoided, and the stable performance of the relay is ensured.

It should be noted that the relay includes at least one relay unit, for example, the relay may include one relay unit, or may include two relay units, that is, a dual relay, and this embodiment is described by taking the dual relay as an example.

In this embodiment, the duplex relay includes two relay units and a plurality of signal lines 3, and the coil 21 of the relay unit includes a plurality of coil pins 211 corresponding to the plurality of signal lines 3; the coil lead-out pins 211 of both relay units are located between the relay bodies 2 of both relay units. All the coil leading-out pins 211 are intensively arranged between the relay bodies 2 of the two relay units, so that the distances between the coil leading-out pins 211 and the corresponding coils 21 are equal, the coil leading-out pins 211 and the corresponding coils 21 are conveniently connected with the corresponding signal lines 3, and the layout of the duplex relay is optimized.

For the dual relay, for convenience of description, two relay units are respectively referred to as a first relay unit and a second relay unit. Further, the plurality of signal lines 3 include a plurality of first signal lines and a plurality of second signal lines, in other words, the first relay unit includes a first relay body and a plurality of first signal lines, the second relay unit includes a second relay body and a plurality of second signal lines, the plurality of first signal lines and the plurality of second signal lines are all wound on the outer side of the same relay body (the first relay body or the second relay body), and the winding directions of the plurality of first signal lines and the plurality of second signal lines are opposite. The 3 wire winding directions of signal line of two relay units are different, not only are convenient for lay wire, but also can distinguish first signal line and second signal line, first relay body and second relay body through the wire winding direction fast.

Optionally, the lateral wall of first casing 12 is equipped with a plurality of protruding muscle 121, and signal line 3 can lean on the top in protruding muscle 121 to play limiting displacement to signal line 3, avoid signal line 3 to drop downwards, be favorable to improving signal line 3 position uniformity, avoid signal line 3 drunkenness, influence relay performance.

Optionally, a stopper 1211 is disposed at the top end of the rib 121, a limiting groove 1212 is formed between the stopper 1211 and the sidewall of the first housing 12, and the signal line 3 is located in the limiting groove 1212, so as to limit the signal line 3 and prevent the signal line 3 from moving in the installation space 11.

Optionally, an outlet groove 122 is disposed on an end surface of the open end of the first housing 12, a supporting structure 123 corresponding to the outlet groove 122 is disposed on an outer side wall of the first housing 12, the second housing 13 is disposed with a wire pressing structure 131, a first end of the wire pressing structure 131 is connected to the second housing 13, a second end of the wire pressing structure 131 can support the signal line 3 to the supporting structure 123, and along a depth direction of the outlet groove 122, the first end of the wire pressing structure 131 and the second end of the wire pressing structure 131 are respectively located on upper and lower sides of the outlet groove 122. So set up, can make the signal line 3 of pressing from both sides between first casing 12 and the second casing 13 and locating be the zigzag, simultaneously, play direction and fixed action to signal line 3 through outlet groove 122, can avoid signal line 3 drunkenness when first casing 12 assembles with second casing 13, the assembly of being convenient for.

Preferably, the plurality of wire outlet grooves 122 are provided, the plurality of wire outlet grooves 122 are arranged in one-to-one correspondence with the plurality of signal wires 3, and the signal wires 3 can be clamped in the corresponding wire outlet grooves 122, so that the signal wires 3 can be distinguished conveniently, and the fixing effect on the signal wires 3 can be improved.

Optionally, the signal line 3 and the coil lead-out pin 211 may be fixedly connected by welding, in order to raise the height of the coil lead-out pin 211, so that the signal line 3 is welded to the coil lead-out pin 211, the relay further includes a spacer 6 disposed in the installation space 11, a conductive piece 61 is disposed on the spacer 6, one end of the conductive piece 61 is fixedly connected to the coil lead-out pin 211, and the other end is located at the opening of the first housing 12 and connected to the signal line 3, so as to raise the coil lead-out pin 211 by the spacer 6 and the conductive piece 61, thereby facilitating welding. Meanwhile, the cushion block 6 can also play a role in positioning the coil leading-out pin 211, so that the coil leading-out pin 211 is prevented from being bent.

In addition, in the prior art, the signal wire head is usually peeled and coated with tin, and then the signal wire head is soldered with the coil lead-out pin by an electric soldering iron, and the connection mode has the following problems: 1) The signal wire core and the coil lead-out pin are directly soldered, so that the strength is insufficient, and the signal wire core and the coil lead-out pin are easy to fall off due to factors such as vibration and the like; 2) Foreign matters are easy to generate, and the interference relay works normally; 3) The tin head formed by welding has an irregular shape, is easy to scratch, needs to be protected by a heat-shrinkable tube, and is complex to operate.

In order to solve the above problem, optionally, the relay unit further includes a connection terminal 4 and a lead connection structure, the signal line 3 is fixedly connected to the connection terminal 4, and the connection terminal 4 is connected to the coil lead-out pin 211 through the lead connection structure. The lead connecting structure comprises an insulating seat 51, a connecting structure is arranged on the insulating seat 51, the connecting structure comprises a mounting groove 511 and a mounting through hole 512, and the wiring terminal 4 is inserted into the mounting groove 511; the mounting through hole 512 is communicated with the mounting groove 511, and the coil lead-out pin 211 can penetrate through the mounting through hole 512 and is inserted into the terminal 4.

In the relay assembling process, the signal wire 3 and the wiring terminal 4 can be fixedly connected, the wiring terminal 4 is inserted into the mounting groove 511 of the insulating base 51 to form a whole, after the relay is installed in the base, the whole and the coil leading-out pin 211 are assembled, the coil leading-out pin 211 penetrates through the corresponding mounting through hole 512 to be inserted into the corresponding wiring terminal 4, the signal wire 3 can be prevented from being overlong, the assembly of other structures of the relay is interfered, and the relay assembling efficiency is improved.

Further, a solder groove 513 for accommodating solder can be formed between the top surface of the wiring terminal 4 and the side wall of the mounting groove 511, so that the solder can be prevented from flowing, and the insulating glue for fixing the wiring terminal 4 and the insulating base 51 can be covered after the soldering is completed, thereby not only further performing insulation and isolation, but also preventing insufficient soldering, and improving the connection stability between the signal wire 3 and the coil lead-out pin 211.

Alternatively, the mounting groove 511 has an outlet 5111, and the signal wire 3 connected to the connection terminal 4 can be protruded out of the mounting groove 511 from the outlet 5111. Compare in making signal line 3 upwards stretch out mounting groove 511 from the notch of mounting groove 511, so set up, can avoid signal line 3 to produce bending deformation, reduce the risk that signal line 3 drops from binding post 4.

Optionally, the insulating base 51 includes two mounting grooves 511 and mounting through holes 512 disposed in one-to-one correspondence to the two mounting grooves 511, and the two mounting grooves 511 are respectively located at two opposite ends of the insulating base 51; the two wire outlets 5111 are respectively located at the ends of the two mounting grooves 511 that are away from each other, so as to facilitate the arrangement of the signal wires 3 and prevent the two signal wires 3 connected to the same insulating base 51 from interfering with each other.

Furthermore, the connecting terminal 4 has a first end and a second end opposite to each other, the first end is used for being inserted into the coil lead-out pin 211, the second end is used for being connected with the signal wire 3, and the width of the first end is larger than that of the second end; the mounting groove 511 includes a positioning groove section 5112 at a middle portion thereof, and a width of the positioning groove section 5112 is smaller than a width of the first end. So set up, can let the effort between binding post 4 and the mounting groove 511 be used for the positioning groove section 5112, and then avoid the power to act on coil pin 211, play the guard action to coil pin 211. Meanwhile, the wiring terminal 4 can be prevented from sliding out of the outlet 5111 along the mounting groove 511.

Optionally, a slip-off prevention structure is arranged in the mounting groove 511, and the slip-off prevention structure can prevent the wiring terminal 4 from slipping off from the notch of the mounting groove 511, so that the mounting stability of the wiring terminal 4 and the insulating base 51 is ensured.

Optionally, the anti-slip structure includes a plurality of anti-slip ribs protruding from the side wall of the mounting groove 511, and the plurality of anti-slip ribs can abut against the connecting terminal 4. Specifically, a plurality of ribs that stop taking off include a plurality of first ribs 5141, and a plurality of first ribs 5141 locate the lateral wall of mounting groove 511 along the circumference interval of installation through-hole 512, and when binding post 4 inserted the mounting groove 511, first rib 5141 can support the first end of tight binding post 4, avoids binding post 4 to deviate from the notch of mounting groove 511. Further, a plurality of anti-disengaging structures still include a plurality of second ribs 5142 protruding the lateral wall of positioning groove section 5112, specifically, positioning groove section 5112 has two relative lateral walls, all is equipped with second rib 5142 on two lateral walls, and second rib 5142 also can support the middle part of tight binding post 4, also has the effect of avoiding binding post 4 to deviate from the notch of mounting groove 511. Optionally, the second ribs 5142 on the two opposite side walls of the positioning groove section 5112 are arranged oppositely, so that the wiring terminal 4 can be prevented from moving left and right in the mounting groove 511, and the connection stability between the wiring terminal 4 and the coil lead-out pin 211 is improved.

Optionally, one end of the anti-slip rib close to the notch of the mounting groove 511 is provided with a guide section 5143, in other words, one end of the first rib 5141 close to the notch of the mounting groove 511 and one end of the second rib 5142 close to the notch of the mounting groove 511 are both provided with a guide section 5143; the height of the guide section 5143 protruding relative to the side wall of the mounting groove 511 is gradually increased along the depth direction of the mounting groove 511, and in the process of inserting the wiring terminal 4 into the mounting groove 511 of the insulating base 51, the guide section 5143 can guide the wiring terminal 4, and the rapid insertion of the wiring terminal 4 into the mounting groove 511 is promoted.

Optionally, a yielding groove 515 corresponding to the mounting through hole 512 is disposed on the bottom wall of the mounting groove 511, and the yielding groove 515 is used for yielding the coil leading-out pin 211, so that the coil leading-out pin 211 can smoothly pass through the mounting through hole 512 to be plugged into the corresponding terminal 4. In this embodiment, the avoiding groove 515 is a U-shaped groove, and an open end of the U-shaped groove is communicated with the mounting through hole 512, so as to better avoid the coil leading-out pin 211.

For the dual relay, two lead connection structures are needed, the two lead connection structures are arranged corresponding to the coil leading-out pins 211 of the two relay units, and the lead connection structures are also located between the relay bodies 2 of the two relay units, so that the installation space 11 is not excessively occupied. It should be noted that, two relay units are arranged in a row along a first direction, and in order to reduce the length of the relay along the first direction, two lead connecting structures are arranged between the two relay units along a second direction, and the second direction is perpendicular to the first direction.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (11)

1. Lead wire connection structure for lead pin and the binding post that is connected with the signal line correspond and be connected, its characterized in that, lead wire connection structure includes insulating seat, be provided with connection structure on the insulating seat, connection structure includes:

the wiring terminal is used for being inserted into the mounting groove;

and the coil leading-out pin can penetrate through the mounting through hole and is spliced with the wiring terminal.

2. A lead connecting structure as set forth in claim 1, wherein a separation preventing structure is provided in said mounting groove, said separation preventing structure preventing said terminal from being separated from said mounting groove.

3. The lead connection structure of claim 2, wherein the anti-slip structure comprises a plurality of anti-slip ribs protruding from the side wall of the mounting groove, and the plurality of anti-slip ribs can tightly abut against the terminal.

4. The lead connection structure of claim 3, wherein a guide section is provided at one end of the anti-slip rib near the notch of the mounting groove;

along the depth direction of mounting groove, the protruding height of guide section for the mounting groove lateral wall increases gradually.

5. The lead connection structure of claim 2, wherein a yielding groove corresponding to the mounting through hole is formed in a bottom wall of the mounting groove, and the yielding groove is used for yielding the coil leading-out pin.

6. The lead connection structure according to claim 1, wherein the mounting groove has an outlet from which the signal wire connected to the connection terminal can be extended out of the mounting groove.

7. The lead connection structure according to claim 6, wherein the insulative housing includes two mounting grooves, the two mounting grooves being respectively located at opposite ends of the insulative housing;

the two wire outlets are respectively positioned at one end of the two mounting grooves which are deviated from each other.

8. The lead connection structure of claim 7, wherein the connection terminal has first and second opposite ends, the first end being adapted to be plugged with the coil lead-out pin, the second end being adapted to be connected with the signal line, the first end having a width greater than a width of the second end;

the mounting groove comprises a positioning groove section located in the middle of the mounting groove, and the width of the positioning groove section is smaller than that of the first end.

9. A lead connection structure as set forth in claim 1, wherein a solder groove for accommodating solder is formable between the top surface of the connection terminal and the side wall of the mounting groove.

10. A relay, characterized in that the relay includes a relay unit including a relay body, a signal line, and a connection terminal, the signal line being connected to the connection terminal, the relay body including a coil, the coil including a coil lead-out pin, the coil lead-out pin being connected to the connection terminal through a lead connection structure according to any one of claims 1 to 9.

11. The relay according to claim 10, wherein said relay comprises two of said relay units, said lead connection structure being located between said relay bodies of said two relay units.

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