CN219873324U - Relay - Google Patents

Abstract

The utility model relates to the technical field of electronic control devices, and provides a relay which comprises a coil module and a relay base, wherein a pin is arranged at the bottom of the coil module, the relay base comprises a base body and at least one fixing unit, the top surface of the base body is provided with an inserting port, and the base body is provided with a first side and a second side which are opposite; the fixing unit comprises a fixing belt and a fastening assembly, wherein the fixing belt is provided with a first end and a second end which are opposite, the first end of the fixing belt is connected with the first side of the base body, and the second end of the fixing belt extends to the second side of the base body after bypassing the top surface of the base body. According to the utility model, the coil module inserted onto the base body is fixed by additionally arranging the fixing unit consisting of the fixing belt and the fastening component, so that the stability of the coil module after being inserted onto the base body can be effectively improved, and the risk of loosening and even separating the coil module from the base body in the working process of the relay is reduced.

Description

Relay

Technical Field

The utility model relates to the technical field of electronic control devices, in particular to a relay.

Background

A relay is an electronically controlled device that is used in an automatic control circuit, and is essentially an "automatic switch" that can control a larger current or voltage with a smaller current or voltage. In general, relays can be classified into automatic relays and non-automatic relays according to different control modes, wherein the automatic relays are represented by electromagnetic relays, and the relays rely on a control electromagnetic principle to switch internal contacts between opening and closing, thereby realizing a switching function.

The existing electromagnetic relay is generally composed of a relay base for connection with an external load through a wire, and a coil module for generating a magnetic force in an energized state to open or close contacts inside thereof. Under normal conditions, corresponding pins are arranged on the coil module, plug interfaces matched with the pins of the coil module are arranged on the relay base, and when the relay base is actually assembled, the coil module and the relay base can be plugged and fixed by inserting the pins on the coil module into the corresponding plug interfaces on the relay base.

However, with the conventional electromagnetic relay, after the coil module is inserted into the corresponding plug-in port on the relay base through the pin, no corresponding fixing measure is available to further fix the coil module, so that when the working environment where the relay is located vibrates greatly and the mounting surface of the relay is a vertical plane, the situation that the coil module loosens or even separates from the relay base is easily caused, thereby affecting the reliability of the relay in actual working.

Disclosure of Invention

The utility model aims to provide a relay, which at least solves the technical problem that a coil module of the traditional electromagnetic relay cannot be further fixed after being inserted into a relay base.

The aim of the utility model is achieved by the following technical scheme:

the relay comprises a coil module and a relay base, wherein pins are arranged at the bottom of the coil module, the relay base comprises a base body and at least one fixing unit, the top surface of the base body is provided with a plug-in port matched with the pins at the bottom of the coil module, and the base body is provided with a first side and a second side which are opposite;

the fixing unit comprises a fixing belt and a fastening assembly, wherein the fixing belt is provided with a first end and a second end which are opposite, the first end of the fixing belt is connected with the first side of the base body, the second end of the fixing belt extends to the second side of the base body after bypassing the top surface of the base body, the second end of the fixing belt and the second side of the base body are fixed through the fastening assembly, and an installation space is formed between the fixing belt and the top surface of the base body;

when the pins of the coil module are inserted into the insertion ports on the top surface of the base body, the coil module is located in the installation space.

In some possible embodiments, the fastening assembly includes a fastening slot, a limit, and at least one first fastener;

the fastening groove is formed in the second side of the base body, the limiting part is arranged in the fastening groove, a gap for the fixing belt to pass through is reserved between the inner side of the limiting part and the inner wall of the fastening groove, the fastening groove on the upper side and the lower side of the gap is of an opening structure, and the first fastening piece is arranged on the limiting part;

when the fixing strap passes through the gap, the first fastener can prop the fixing strap against the fastening groove.

In some possible embodiments, the outer wall of the fixing band is provided with anti-slip patterns, the width of the fixing band is 2-4cm, and the fixing band is made of flexible insulating materials.

In some possible embodiments, the first end of the fixing strap is provided with a fixing hole, and the first side of the base body is provided with a connecting hole matched with the fixing hole;

the fixing unit further comprises a second fastener which can pass through the fixing hole and be inserted into the connecting hole, and the second fastener is in threaded connection with the connecting hole.

In some possible embodiments, the coil module comprises a base, a coil assembly and a housing arranged on the base, wherein the coil assembly is arranged on the base and is positioned in the housing, and pins are arranged at the bottom of the coil assembly and vertically penetrate through the base;

plug-in units are arranged on the front side and the rear side of the housing; the plug-in unit comprises a plug-in groove and a plug-in piece, the plug-in groove is arranged on the top surface of the base, and the plug-in piece is arranged on the outer wall of the housing and can be inserted into the plug-in groove;

the bottom of the plug connector is provided with two plug connectors capable of moving along the horizontal direction, each plug connector comprises a plug part extending along the horizontal direction, and the plug parts of the two plug connectors extend towards opposite directions; limiting grooves which are in one-to-one correspondence with the plugging parts are formed in the inner walls of the plugging grooves;

after the plug connector is inserted into the plug groove, the plug parts of the two plug blocks can be inserted into the corresponding limit grooves.

In some possible embodiments, the plugging unit further comprises driving members in one-to-one correspondence with the plugging blocks; the driving piece is used for driving the inserting part of the inserting block to be inserted into the corresponding limiting groove after the inserting piece is inserted into the inserting groove.

In some possible embodiments, the plug connector is internally provided with movable cavities corresponding to the plug connector one by one, the plug connector further comprises a connecting part, one end of the connecting part is connected with the plug connector, and the other end of the connecting part extends into the movable cavities;

the driving piece comprises a pressing rod and a spring, one end of the pressing rod is connected with one side of the connecting part, the other end of the pressing rod horizontally extends to the outside of the plug connector, and the pressing rod is connected with the plug connector in a sliding manner;

the spring is horizontally arranged in the movable cavity, one end of the spring is connected with one side, away from the compression bar, of the connecting portion, and the other end of the spring is connected with the inner wall, away from the compression bar, of the movable cavity.

In some possible embodiments, an avoidance port is formed at the bottom of the movable cavity, the connection portion passes through the avoidance port and then extends into the movable cavity, and the connection portion is slidably connected with the avoidance port;

the driving piece further comprises a pressure head, and one end of the pressure rod extending to the outside of the plug connector is connected with the pressure head.

In some possible embodiments, the outer wall of the housing is provided with a plurality of heat dissipation grooves, and the plurality of heat dissipation grooves are sequentially arranged along the height direction of the housing;

the plurality of heat dissipation grooves are closed after extending along the circumferential direction of the housing.

In some possible embodiments, the top surface of the housing is provided with connecting grooves corresponding to the fixing units one by one, and the connecting grooves are matched with the fixing bands of the fixing units.

The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:

1. according to the relay provided by the utility model, the coil module inserted onto the base body is fixed by additionally arranging the fixing unit consisting of the fixing belt and the fastening assembly, so that the stability of the coil module after being inserted onto the base body can be effectively improved, and the risk that the coil module is loose or even separated from the base body in the working process of the relay is reduced. Meanwhile, the fixing strap is used as a fixing piece, so that the fixing process of the coil module can be effectively simplified, and the coil module can be quickly fixed without the need of corresponding professional ability of related operators, so that the operation is simple and convenient.

2. According to the utility model, the connection mode between the housing and the base forming the relay housing is improved, specifically, the housing and the base are connected by additionally arranging the plug-in units on the front side and the rear side of the housing, the housing can be disassembled and assembled without additional auxiliary tools on the basis of realizing reliable connection of the housing and the base, the whole process is simple and convenient, and the disassembly and assembly process of the housing are simplified, so that the disassembly and assembly efficiency of the housing is improved.

Drawings

Fig. 1 is a schematic structural diagram of a relay provided by the present utility model.

Fig. 2 is a schematic structural diagram of a relay base provided by the utility model;

FIG. 3 is a schematic view of the relay mount shown in FIG. 2 from another perspective;

FIG. 4 is a schematic structural view of a fastening strap according to the present utility model;

FIG. 5 is an enlarged view of FIG. 3 at A;

FIG. 6 is a schematic view of a base body according to the present utility model;

fig. 7 is a schematic structural diagram of a coil module according to the present utility model;

FIG. 8 is a schematic view of a partial exploded construction of the coil module shown in FIG. 7;

FIG. 9 is an enlarged view at B in FIG. 8;

FIG. 10 is a schematic view of the internal structure of the plug connector according to the present utility model;

FIG. 11 is a schematic view of a housing provided by the present utility model;

FIG. 12 is a partial cross-sectional view of the plug inserted into the socket and the plug portion of the plug block not inserted into the limit slot;

fig. 13 is a partial structural cross-sectional view of the plug inserted into the plug slot and the plug portion of the plug inserted into the limit slot.

Icon: 100-coil module, 200-relay base, 10-base body, 10 a-first side, 10 b-second side, 10 c-connecting hole, 20-fixing unit, 21-fixing band, 21 a-first end, 21 b-second end, 21 c-fixing hole, 22-fastening component, 221-fastening groove, 222-limit part, 223-first fastener, 23-second fastener, 30-base, 30 a-seal groove, 30 b-seal ring, 40-housing, 40 a-heat dissipation groove, 40 b-seal part, 40 c-connecting groove, 50-plug unit, 51-plug groove, 511-limit groove, 52-plug member, 52 a-movable cavity, 52 b-avoiding port, 53-plug block, 531-plug part, 532-connecting part, 54-driving member, 541-compression bar, 542-spring, 543-compression head, 60-coil component.

Detailed Description

Example 1

Referring to fig. 1 to 6, the present embodiment provides a relay to at least overcome the technical problem that the coil module 100 of the existing electromagnetic relay cannot be further fixed after being plugged onto a base, specifically, the relay includes a coil module 100 and a relay base 200, wherein pins are disposed at the bottom of the coil module 100, the relay base 200 includes a base body 10, and a top surface of the base body 10 is provided with a plug interface adapted to the pins at the bottom of the coil module 100, when the pins at the bottom of the coil module 100 are plugged into the corresponding plug interfaces at the bottom surface of the base body 10, the base body 10 and the coil module 100 are combined together to form the relay, and at this time, the left and right sides of the base body 10 are further provided with wire plugging ports for connecting wires, screws for locking the wires, and the like.

In addition, as shown in fig. 2 and 3, the base body 10 further has a first side 10a and a second side 10b opposite to each other, and it should be noted that, for understanding the technical solution provided in the present embodiment, the front side of the base body 10 is defined as the first side 10a, and correspondingly, the rear side of the base body 10 is defined as the second side 10b.

On this basis, in order to realize further fixation of the coil module 100 after the coil module 100 is inserted into the socket on the top surface of the base body 10 through its own pins, the relay base 200 provided in this embodiment further includes at least one fixing unit 20 for fixing the coil module 100.

Specifically, the fixing unit 20 includes a fixing strap 21 and a fastening assembly 22, wherein, as shown in fig. 4, the fixing strap 21 has opposite first and second ends 21a and 21b, at this time, as shown in fig. 2, the first end 21a of the fixing strap 21 is connected with the first side 10a of the base body 10, the second end 21b of the fixing strap 21 extends to the second side 10b of the base body 10 after bypassing the top surface of the base body 10, and, as shown in fig. 3, the second end 21b of the fixing strap 21 is fixed with the second side 10b of the base body 10 by the fastening assembly 22, and when the fixing strap 21 bypasses the top surface of the base body 10, an installation space adapted to the coil module 100 is formed between the fixing strap 21 and the top surface of the base body 10.

Specifically, when the relay is assembled, the fastening component 22 at the second end 21b of the fixing strap 21 is first removed to remove the fixing strap 21, at this time, the plugging port on the top surface of the base body 10 is completely exposed, and then the coil module 100 can be inserted into the plugging port corresponding to the top surface of the base body 10 through its own pins, so as to realize plugging and installation between the coil module 100 and the base body 10.

After the coil module 100 is installed in place, i.e. when the pins of the coil module 100 are inserted into the corresponding sockets on the top surface of the base body 10, the second end 21b of the fixing strap 21 is wound around the top surface of the base body 10 and extends to the second side 10b of the base body 10 again, in this process, a certain pressure can be applied to the coil module 100 by using the fixing strap 21 by tightening the fixing strap 21, at this time, the coil module 100 is located in the installation space formed by the fixing strap 21 and the top surface of the base body 10, so that the coil module 100 is pressed on the base body 10 by using the fixing strap 21, and then the second end 21b of the fixing strap 21 can be fixedly connected with the base body 10 by using the fastening assembly 22, so that effective fixing of the coil module 100 is achieved, and the structure at this time is shown in fig. 1.

Therefore, the coil module 100 inserted onto the base body 10 is fixed by adding the fixing unit 20 composed of the fixing belt 21 and the fastening assembly 22, so that the stability of the coil module 100 inserted onto the base body 10 can be effectively improved, and the risk of loosening and even separating the coil module 100 from the base body 10 in the working process of the relay is reduced. Meanwhile, the fixing strap 21 is used as a fixing piece, so that the fixing process of the coil module 100 can be effectively simplified, and the coil module 100 can be quickly fixed without the need of a related operator to have corresponding professional capability, so that the operation is simple and convenient.

It can be appreciated that, in order to further improve the reliability of the coil module 100 after being fixed, with continued reference to fig. 2 or 3, the relay base 200 provided in this embodiment is provided with two fixing units 20, and the two fixing units 20 are symmetrically arranged along the length direction of the base body 10, so as to realize that the coil module 100 is fixed by using the two fixing units 20 at the same time. Meanwhile, in order to increase the area of the fixing band 21 when it contacts the coil module 100 as much as possible and reduce the cost as much as possible, the width of the fixing band 21 in this embodiment is preferably 2-4cm, and the fixing band 21 is made of a flexible insulating material, so that the fixing band 21 has a certain stretch deformation capability, which is helpful to make the fixing band 21 apply a certain pressure to the coil module 100 by pulling and improve the safety after the fixing band 21 fixes the coil module 100.

In order to achieve the connection of the fixing strap 21 with the base body 10 after the second end 21b of the fixing strap 21 passes around the top surface of the base body 10 and extends to the second side 10b of the base body 10, the present embodiment provides a fastening assembly 22 with simple structure and good fixing effect, and specifically, the fastening assembly 22 includes a fastening slot 221, a limiting portion 222 and at least one first fastening member 223.

As shown in fig. 3 and 5, the fastening groove 221 is formed on the second side 10b of the base body 10, the limiting portion 222 is disposed in the fastening groove 221, at this time, a gap for the fixing strap 21 to pass through is reserved between the inner side of the limiting portion 222 and the inner wall of the fastening groove 221, and the fastening grooves 221 on the upper and lower sides of the gap are both in an open structure, so that the fixing strap 21 passes through the gap between the limiting portion 222 and the fastening groove 221, at the same time, the first fastening member 223 is disposed on the limiting portion 222, and when the fixing strap 21 passes through the gap between the limiting portion 222 and the fastening groove 221, the first fastening member 223 can abut the fixing strap 21 in the fastening groove 221, and it is understood that the first fastening member 223 may be, but is not limited to, a screw, and the screw is in threaded connection with the limiting portion 222.

Specifically, in actual use, when the coil module 100 is plugged onto the base body 10, and the second end 21b of the fixing strap 21 bypasses the top surface of the base body 10 to wrap the coil module 100, the second end 21b of the fixing strap 21 is first inserted into the gap between the limiting portion 222 and the fastening slot 221 from the opening on the upper side of the fastening slot 221, then the second end 21b of the fixing strap 21 is extended from the opening on the lower side of the fastening slot 221, after that, the fixing strap 21 can be tightened to compress the coil module 100 onto the base body 10 by the fixing strap 21, and finally the fixing strap 21 located in the gap between the limiting portion 222 and the fastening slot 221 is abutted by screwing the first fastener 223, so as to fix the fixing strap 21.

It can be appreciated that, in order to further improve the fixing effect when the fixing band 21 fixes the coil module 100, the outer wall of the fixing band 21 is provided with anti-slip patterns, so that the coil module 100 can be prevented from being easily slid when being compressed by the fixing band 21, the fixing effect of the coil module 100 is affected, and the fixing band 21 in the gap between the limiting portion 222 and the fastening groove 221 can be prevented from being easily slid after being fixed by the first fastener 223.

On this basis, the fastening groove 221 may be configured to have an inward concave arc structure, so as to increase the contact area between the fixing strap 21 and the inner wall of the fastening groove 221 when passing through the fastening groove 221, and at the same time, two first fasteners 223 symmetrically disposed may be disposed on the limiting portion 222, so that the fixing strap 21 located in the gap between the limiting portion 222 and the fastening groove 221 is simultaneously abutted by the two first fasteners 223, thereby improving the fixing effect on the fixing strap 21.

On the other hand, in order to avoid the necessity of further fixing the coil module 100 even in practical use, the fixing strap 21 is preferably provided in a detachable structure so as to remove the fixing strap 21 when further fixing of the coil module 100 is not necessary, in order to avoid the occupation of a part of the space by the fixing strap 21.

In order to achieve the detachment of the fixing strap 21, as shown in fig. 4, the first end 21a of the fixing strap 21 is provided with a fixing hole 21c, and correspondingly, as shown in fig. 6, the first side 10a of the base body 10 is provided with a connecting hole 10c adapted to the fixing hole 21c, at this time, in combination with the content shown in fig. 2, the fixing unit 20 further includes a second fastening member 23, which can pass through the fixing hole 21c and be inserted into the connecting hole 10c, preferably, the connecting hole 10c provided on the first side 10a of the base body 10 is a threaded hole, and the second fastening member 23 can be, but not limited to, a screw, and after the second fastening member 23 is inserted into the connecting hole 10c, the second fastening member 23 is in threaded connection with the connecting hole 10c, thereby helping to simplify the detachment process of the fixing strap 21.

That is, when further fixing of the coil module 100 is required, the first end 21a of the fixing strap 21 is connected to the first side 10a of the base body 10 by the second fastener 23, and then further fixing of the coil module 100 by the fixing strap 21 is performed by the aforementioned method. On the contrary, the fixing belt 21 can be taken away only by detaching the second fastening piece 23, and the operation is simple and convenient.

Example 2

On the basis of embodiment 1, in consideration of the fact that, as shown in fig. 7 and 8, the coil module 100 of the conventional electromagnetic relay is generally composed of the base 30, the coil assembly 60 and the cover 40 disposed on the base 30, the coil assembly 60 is disposed on the base 30 and is located inside the cover 40, at this time, the bottom of the coil assembly 60 is provided with pins, and the pins vertically penetrate through the base 30, so that the pins can be inserted into corresponding insertion ports on the top surface of the base body 10, and the base 30 and the cover 40 together form a relay housing of the electromagnetic relay, and during assembly, the cover 40 and the base 30 in the relay housing of the conventional electromagnetic relay are mostly connected by using screws as fasteners, so that such connection is often unfavorable for rapid disassembly of the cover 40 when needed.

Therefore, the present embodiment also provides a relay housing, which aims to simplify the assembly and disassembly process of the housing 40 by improving the connection manner between the base 30 and the housing 40, and is beneficial to the quick assembly and disassembly of the housing 40 when needed (for example, when the related electrical components inside the housing 40 need to be overhauled).

In this embodiment, as shown in fig. 7 or 8, the housing 40 has a substantially rectangular structure, and at this time, the plugging units 50 are disposed on both front and rear sides of the housing 40, so that the housing 40 and the base 30 can be quickly connected by two plugging units 50 disposed on both front and rear sides of the housing 40, however, in actual implementation, the plugging units 50 may be disposed on both left and right sides of the housing 40 as required, which is not limited herein.

In order to achieve the quick connection between the housing 40 and the base 30, the plug-in unit 50 of the present embodiment provided on both front and rear sides of the housing 40 includes a plug-in groove 51 and a plug-in piece 52.

As shown in fig. 8, the plugging slot 51 is disposed on the top surface of the base 30, and the plugging element 52 is disposed on the outer wall of the housing 40 and is matched with the plugging slot 51 disposed on the top surface of the base 30, so that when the housing 40 is carried on the top surface of the base 30, the plugging element 52 disposed on the outer wall of the housing 40 can be inserted into the corresponding plugging slot 51, and preferably, when the plugging element 52 is inserted into the corresponding plugging slot 51, the plugging element 52 and the plugging slot 51 are in interference fit, so as to further improve the stability of the housing 40 after being mounted and fixed.

Meanwhile, in connection with the content shown in fig. 10, two plugging blocks 53 capable of moving along the horizontal direction are disposed at the bottom of the plugging element 52, that is, the two plugging blocks 53 can move along the horizontal direction to approach or separate from each other, at this time, the plugging blocks 53 include plugging portions 531 extending along the horizontal direction, the plugging portions 531 of the two plugging blocks 53 extend in opposite directions, and correspondingly, as shown in fig. 9, limiting grooves 511 corresponding to the plugging portions 531 one by one and adapted to the inner walls of the plugging grooves 51 are provided.

With the above arrangement, when it is necessary to mount the housing 40 to the base 30, the plug units 50 provided on the front and rear sides of the housing 40 are operated at the same time, and based on the same operation for both plug units 50, an example of the operation of one of the plug units 50 will be described below.

Specifically, when the housing 40 needs to be installed, the two plugging blocks 53 at the bottom of the plugging element 52 in the plugging unit 50 are moved in opposite directions (i.e. the two plugging blocks 53 are close to each other) until the plugging portions 531 of the two plugging blocks 53 are hidden at the bottom of the plugging element 52 (i.e. the plugging portions 531 do not protrude from the plugging element 52), then the plugging element 52 is aligned with the corresponding plugging grooves 51 on the base 30, and after the plugging element 52 is aligned with the corresponding plugging grooves 51, the housing 40 is vertically placed on the base 30, at this time, as shown in fig. 12, the plugging element 52 is inserted into the corresponding plugging grooves 51.

After the plug-in pieces 52 are inserted into the corresponding plug-in grooves 51 on the base 30, the bottoms of the plug-in pieces 53 are contacted with the inner bottom surfaces of the plug-in grooves 51, the housing 40 is completely supported on the base 30, and at this time, the plug-in portions 531 of the two plug-in pieces 53 at the bottoms of the plug-in pieces 52 are just aligned with the corresponding limit grooves 511 in the plug-in grooves 51, then, as shown in fig. 13, the two plug-in pieces 53 move in opposite directions along the horizontal direction (i.e. the two plug-in pieces 53 are far away from each other), in this process, the plug-in portions 531 of the two plug-in pieces 53 are inserted into the corresponding limit grooves 511 in the plug-in grooves 51, so that the position of the housing 40 in the horizontal and vertical directions is limited by the cooperation of the plug-in portions 531 and the limit grooves 511, and thus the mounting and fixing of the housing 40 are realized. On the contrary, when the cover 40 needs to be removed, the cover 40 can be lifted upwards and removed only by first enabling the plugging portions 531 of the two plugging blocks 53 at the bottom of the plugging piece 52 to withdraw from the corresponding limiting grooves 511 in the plugging grooves 51, and the operation is simple and convenient.

Therefore, in this embodiment, the plugging units 50 are additionally arranged on the front side and the rear side of the housing 40 to connect the housing 40 with the base 30, so that the housing 40 can be disassembled and assembled without using additional auxiliary tools on the basis of reliably connecting the housing 40 with the base 30, and the whole process is simple and convenient, which is helpful for simplifying the disassembly and assembly process of the housing 40, thereby improving the disassembly and assembly efficiency of the housing 40.

On this basis, the specific structure of the plugging unit 50 is further defined in this embodiment, specifically, in combination with the content shown in fig. 10, the plugging unit 50 further includes a driving member 54 corresponding to the plugging blocks 53 one by one, that is, one driving member 54 is used in cooperation with one plugging block 53, where the driving member 54 is used to drive, after the plugging member 52 is inserted into the plugging slot 51, the plugging portion 531 of the corresponding plugging block 53 to be inserted into the corresponding limiting slot 511, that is, by further adding the driving member 54 corresponding to the plugging block 53 one by one, the manual auxiliary operation can be further simplified, so as to further simplify the disassembling and assembling process of the housing 40.

Specifically, as shown in fig. 10, the driving member 54 includes a compression bar 541 and a spring 542, at this time, a movable cavity 52a corresponding to the plug 53 is disposed in the plug 52, and the plug 53 further includes a connection portion 532, where one end of the connection portion 532 is connected to the plug portion 531, and the other end of the connection portion 532 extends into the movable cavity 52 a.

At this time, one end of the compression bar 541 is connected to one side of the connection portion 532, and the other end of the compression bar 541 extends horizontally to the outside of the plug 52, and the compression bar 541 is slidably connected to the plug 52, so that the compression bar 541 can drive the connection portion 532 to slide freely along the horizontal direction. Meanwhile, the spring 542 is horizontally disposed in the movable chamber 52a, one end of the spring 542 is connected to a side of the connection portion 532 remote from the pressure lever 541, and the other end of the spring 542 is connected to an inner wall of the movable chamber 52a remote from the pressure lever 541.

So configured, normally, for a single plug unit 50, the springs 542 of the driving member 54, which are in one-to-one correspondence with the two plug blocks 53 at the bottom of the plug 52, are in a natural extended state. When the cover 40 needs to be mounted on the base 30, in combination with the foregoing, the pressing rods 541 of the driving members 54 corresponding to the plug-in blocks 53 are pressed to make the pressing rods 541 move towards the inside of the movable cavity 52a along the horizontal direction, and then the connecting portions 532 and 531 of the plug-in blocks 53 are driven to move synchronously by the pressing rods 541 until the plug-in portions 531 of the plug-in blocks 53 are hidden at the bottom of the plug-in blocks 52, and in this process, the springs 542 will contract to pre-store an elastic force.

During the insertion of the plug 52 into the socket 51, as shown in fig. 12, the socket 531 based on the plug 53 is restricted by the socket 51, and thus the spring 542 cannot release the pre-stored elastic force. As the plug 52 continues to be inserted into the socket 51, after the plug portion 531 of the plug 53 is aligned with the corresponding limit slot 511 in the socket 51, the spring 542 of the driving member 54 corresponding to the plug 53 releases the pre-stored elastic force, and at this time, as shown in fig. 13, the plug portion 531 is inserted into the corresponding limit slot 511 in the socket 51 under the elastic force of the spring 542.

Conversely, the plugging portion 531 of the plugging block 53 may be withdrawn from the corresponding limiting groove 511 by pressing the corresponding pressing rod 541, so as to facilitate the detachment of the housing 40 from the base 30. It can be seen that, by adopting the driving member 54 composed of the pressing rod 541 and the spring 542 to realize the insertion of the insertion portion 531 of the driving insertion block 53 into the corresponding limiting slot 511, only the pressing rod 541 is manually pressed during the actual operation, so as to further simplify the manual auxiliary operation, thereby helping to further simplify the disassembly and assembly process of the housing 40.

Meanwhile, in actual implementation, with continued reference to fig. 10, an avoidance port 52b extending along a movement path of the connection portion 532 may be further provided at the bottom of the movable cavity 52a, and the connection portion 532 of the plug-in block 53 may extend into the movable cavity 52a after passing through the avoidance port 52b, so as to avoid interference between the connection portion 532 and the plug-in element 52 when moving, and the connection portion 532 is slidably connected with the avoidance port 52b, so as to further improve stability of the connection portion 532 when moving in the movable cavity 52 a. Meanwhile, in order to facilitate manual pressing of the corresponding pressing rod 541, the driving member 54 further includes a pressing head 543, and one end of the pressing rod 541 extending to the outside of the plug 52 is connected with the pressing head 543, and when the corresponding pressing rod 541 needs to be pressed, only the corresponding pressing head 543 needs to be pressed.

In addition, considering that the coil assembly 60 constituting the coil module 100 is normally located inside the case 40, as the electric components in the coil assembly 60 are operated for a long time, a certain amount of heat is generated inside the case 40, and thus the heat dissipation problem of the case 40 is also of concern.

However, the conventional electromagnetic relay adopts a structure in which the housing 40 is mostly rectangular and the side wall is planar, and the contact area of the air in the external environment with the outer wall of the housing 40 is small, so that the heat dissipation area of the housing 40 is small and the heat dissipation effect is poor, and therefore, the structure of the housing 40 is further improved in this embodiment.

Specifically, as shown in fig. 11, the outer wall of the casing 40 is provided with a plurality of heat dissipation grooves 40a, and the plurality of heat dissipation grooves 40a are sequentially and uniformly arranged along the height direction of the casing 40, and further, the plurality of heat dissipation grooves 40a are all closed after extending along the circumferential direction of the casing 40, that is, each heat dissipation groove 40a is in an annular closed structure.

It can be appreciated that, in this embodiment, by providing the outer wall of the housing 40 with the plurality of heat dissipation grooves 40a with annular closed structures, the contact area between the air in the external environment and the outer wall of the housing 40 can be effectively increased, so as to increase the heat dissipation area, and further effectively improve the heat dissipation effect of the housing 40, so that the coil assembly 60 inside the housing 40 can reliably operate in a long-time working state.

On the other hand, the present embodiment adds a sealing structure between the cover 40 and the base 30, considering that the sealing performance between the cover 40 and the base 30 is also important when the cover 40 is mounted on the base 30.

Specifically, as shown in fig. 8, the top surface of the base 30 is provided with a sealing groove 30a, and the sealing groove 30a is closed after extending along the circumferential direction of the base 30, at this time, a sealing ring 30b is provided in the sealing groove 30a, and the sealing ring 30b is a rubber sealing ring, and correspondingly, as shown in fig. 11, a sealing portion 40b adapted to the sealing groove 30a is provided at the bottom of the casing 40.

So arranged, when the cover 40 is installed, when the cover 40 is fully carried on the base 30, the sealing part 40b at the bottom of the cover 40 is inserted into the sealing groove 30a on the base 30, and when the cover 40 is installed and fixed, the sealing part 40b at the bottom of the cover 40 can press the sealing ring 30b in the sealing groove 30a, so that reliable sealing between the cover 40 and the base 30 is realized.

On this basis, in order to further improve the stability of the coil module 100 after being plugged onto the relay base 200 in combination with the technical solution shown in embodiment 1, as shown in fig. 8, the top surface of the housing 40 is provided with connecting slots 40c corresponding to the fixing units 20 one by one, and the connecting slots 40c are adapted to the fixing strips 21 of the fixing units 20, so that the fixing strips 21 can pass through the connecting slots 40c corresponding to the top surface of the housing 40.

Specifically, when the coil module 100 needs to be further fixed by using the fixing strap 21, as shown in fig. 1, after the pins of the coil assembly 60 are inserted into the corresponding inserting ports on the top surface of the base body 10, the second end 21b of the fixing strap 21 first passes through the corresponding connecting slot 40c on the top surface of the housing 40 and then extends to the second side 10b of the base body 10, and after the fixing strap 21 is tensioned and fixed by the fastening assembly 22, the coil module 100 is fixed, at this time, under the limiting action of the connecting slot 40c, the coil module 100 cannot move laterally (i.e. move towards the left and right sides of the base body 10), thereby further improving the stability of the coil module 100 after being fixed by the fixing strap 21.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The relay comprises a coil module and a relay base, wherein pins are arranged at the bottom of the coil module;

the fixing unit comprises a fixing belt and a fastening assembly, wherein the fixing belt is provided with a first end and a second end which are opposite, the first end of the fixing belt is connected with the first side of the base body, the second end of the fixing belt extends to the second side of the base body after bypassing the top surface of the base body, the second end of the fixing belt and the second side of the base body are fixed through the fastening assembly, and an installation space is formed between the fixing belt and the top surface of the base body;

when the pins of the coil module are inserted into the insertion ports on the top surface of the base body, the coil module is located in the installation space.

2. The relay of claim 1, wherein the fastening assembly comprises a fastening slot, a limit, and at least one first fastener;

the fastening groove is formed in the second side of the base body, the limiting part is arranged in the fastening groove, a gap for the fixing belt to pass through is reserved between the inner side of the limiting part and the inner wall of the fastening groove, the fastening groove on the upper side and the lower side of the gap is of an opening structure, and the first fastening piece is arranged on the limiting part;

when the fixing strap passes through the gap, the first fastener can prop the fixing strap against the fastening groove.

3. Relay according to claim 1 or 2, characterized in that the outer wall of the fixation band is provided with anti-slip threads, the fixation band has a width of 2-4cm, and the fixation band is made of flexible insulating material.

4. The relay according to claim 1, wherein the first end of the fixing band is provided with a fixing hole, and the first side of the base body is provided with a connecting hole adapted to the fixing hole;

the fixing unit further comprises a second fastener which can pass through the fixing hole and be inserted into the connecting hole, and the second fastener is in threaded connection with the connecting hole.

5. The relay of claim 1, wherein the coil module comprises a base, a coil assembly and a housing disposed on the base, the coil assembly being disposed on the base and within the housing, a bottom of the coil assembly being provided with pins that vertically extend through the base;

plug-in units are arranged on the front side and the rear side of the housing; the plug-in unit comprises a plug-in groove and a plug-in piece, the plug-in groove is arranged on the top surface of the base, and the plug-in piece is arranged on the outer wall of the housing and can be inserted into the plug-in groove;

the bottom of the plug connector is provided with two plug connectors capable of moving along the horizontal direction, each plug connector comprises a plug part extending along the horizontal direction, and the plug parts of the two plug connectors extend towards opposite directions; limiting grooves which are in one-to-one correspondence with the plugging parts are formed in the inner walls of the plugging grooves;

after the plug connector is inserted into the plug groove, the plug parts of the two plug blocks can be inserted into the corresponding limit grooves.

6. The relay according to claim 5, wherein the plug unit further includes driving members in one-to-one correspondence with the plug blocks; the driving piece is used for driving the inserting part of the inserting block to be inserted into the corresponding limiting groove after the inserting piece is inserted into the inserting groove.

7. The relay according to claim 6, wherein the plug connector is internally provided with movable cavities corresponding to the plug connector one by one, the plug connector further comprises a connecting part, one end of the connecting part is connected with the plug connector, and the other end of the connecting part extends into the movable cavities;

the driving piece comprises a pressing rod and a spring, one end of the pressing rod is connected with one side of the connecting part, the other end of the pressing rod horizontally extends to the outside of the plug connector, and the pressing rod is connected with the plug connector in a sliding manner;

the spring is horizontally arranged in the movable cavity, one end of the spring is connected with one side, away from the compression bar, of the connecting portion, and the other end of the spring is connected with the inner wall, away from the compression bar, of the movable cavity.

8. The relay according to claim 7, wherein an avoidance port is formed in the bottom of the movable cavity, the connecting portion penetrates through the avoidance port and then extends into the movable cavity, and the connecting portion is in sliding connection with the avoidance port;

the driving piece further comprises a pressure head, and one end of the pressure rod extending to the outside of the plug connector is connected with the pressure head.

9. The relay according to claim 5, wherein a plurality of heat dissipation grooves are formed in the outer wall of the housing, and the plurality of heat dissipation grooves are sequentially formed in the height direction of the housing;

the plurality of heat dissipation grooves are closed after extending along the circumferential direction of the housing.

10. The relay according to claim 5, wherein the top surface of the housing is provided with connection grooves corresponding to the fixing units one by one, the connection grooves being adapted to the fixing bands of the fixing units.