An insulator split type electromagnetic relay

Abstract

The present invention relates to the field of relay technology, and in particular discloses an insulator split-type electromagnetic relay, comprising a first body, an electromagnet and a moving terminal arranged on the first body, a second body matched with the first body, and a static terminal arranged on the second body; a protective shell is provided with a receiving cavity; the second body has a supporting portion and a bearing portion, the first body is pressed on the supporting portion, and the first body and the bearing portion are plugged and matched; the protective shell has a plurality of glue grooves penetrating the inner cavity wall of the receiving cavity, and the plurality of glue grooves are arranged around the supporting portion; glue is injected into the plurality of glue grooves, and the supporting portion and the protective shell are firmly bonded together by the glue in the glue grooves, so as to avoid the protective shell from being separated from the body and causing poor use of the relay. The first body and the second body are plugged and assembled together, which avoids interference and collision during the assembly process compared to assembling the electromagnet, the moving terminal, and the static terminal on the same body, thereby improving the assembly efficiency and assembly yield of the relay.

Description

Technical Field

[0001] The invention relates to the technical field of relays, and in particular discloses an insulator split-type electromagnetic relay. Background Art

[0002] Relay is one of the commonly used accessories of various mechanical equipment. Relay is an automatic switch that uses a small current to control the on and off of a large current. There are many types of relays, and electromagnetic relay is one of them. Electromagnetic relay includes an insulating body and multiple parts installed on the insulating body. In the prior art, multiple parts need to be assembled on the same insulating body. Multiple parts will interfere and collide during the assembly process, resulting in poor deformation of parts and poor assembly of relays. In the prior art, the housing needs to be installed outside the body of the relay with the help of fasteners such as screws, and the installation structure is complicated and inconvenient to use. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide an insulator-split electromagnetic relay, in which the supporting portion and the protective shell are firmly bonded together by the glue in the glue-containing groove to avoid the protective shell from being separated from the body and causing poor use of the relay; the first body and the second body are plugged and assembled together, which avoids interference and collision during the assembly process compared to assembling the electromagnet, the moving terminal, and the static terminal on the same body, thereby improving the assembly efficiency and assembly yield of the relay.

[0004] To achieve the above-mentioned purpose, the present invention provides an insulator split-type electromagnetic relay, comprising a first body, an electromagnet arranged on the first body, a moving terminal arranged on the first body or the electromagnet, a second body plugged into and matched with the first body, and a static terminal arranged on the second body, the electromagnet being used to drive the moving terminal to turn on or off the static terminal; and also comprising a protective shell, the protective shell being provided with a receiving cavity for accommodating the first body, the electromagnet, the moving terminal, the second body and the static terminal; the second body being provided with a supporting portion and a bearing portion cross-arranged with the supporting portion, the first body being pressed on the supporting portion, and the first body being plugged into and matched with the bearing portion; the protective shell being provided with a plurality of glue-containing grooves penetrating the inner cavity wall of the receiving cavity, the plurality of glue-containing grooves being provided around the supporting portion, and the glue contained in the glue-containing grooves being used to bond the protective shell and the supporting portion.

[0005] Preferably, the top wall of the protective shell is provided with an air hole connected to the accommodating cavity, and an air gap connected to the accommodating cavity is provided between the inner cavity wall of the accommodating cavity and the supporting portion, and external air enters the accommodating cavity through the air gap.

[0006] Preferably, the glue containing groove passes through the bottom surface of the protective shell, and the protective shell is provided with a stopping surface extending into the glue containing groove, and the stopping surface is located between the bottom surface of the supporting portion and the top surface of the supporting portion.

[0007] Preferably, the upper and lower ends of the bearing part are respectively provided with a first card slot and a second card slot, the upper end of the first body is provided with a first card portion inserted into the first card slot, and the lower end of the first body or the lower end of the electromagnet is provided with a second card portion inserted into the second card slot.

[0008] Preferably, the first clamping portion includes a first plate body and a second plate body intersecting the first plate body, the first clamping slot includes a first slot body and a second slot body intersecting the first slot body, and the first plate body and the second plate body are respectively installed in the first slot body and the second slot body.

[0009] Preferably, the bearing part is provided with a third card slot, the first card slot and the second card slot are both recessed from the side of the bearing part close to the electromagnet, and the third card slot is recessed from the side of the bearing part away from the electromagnet; the static terminal is arranged on the bearing part, and the static terminal is provided with a card plate part inserted into the third card slot.

[0010] Preferably, the bearing portion is provided with an isolation strip, and the number of third card slots is multiple, and the multiple third card slots are respectively located on both sides of the isolation strip; the number of static terminals is two, and the two static terminals are respectively located on both sides of the isolation strip, and the card plate parts of the two static terminals are respectively installed in the second card slots on both sides of the isolation strip.

[0011] Preferably, the first body is provided with two connecting terminals for conducting the electromagnet, the connecting terminals include a welding foot passing through the supporting portion, a fixing portion arranged on the first body, and a connecting portion protruding from the first body; the second body is provided with two making way grooves, the two making way grooves are recessed from two sides of the second body away from each other, and the connecting portions of the two connecting terminals are respectively located in the two making way grooves.

[0012] Preferably, the supporting portion is provided with two sliding holes, and the connecting parts of the two connecting terminals respectively penetrate the supporting portion via the two sliding holes. The sliding holes are extended along the length direction of the supporting portion, and the sliding holes penetrate the supporting portion along the thickness direction of the supporting portion. The welding feet move in the sliding holes so that the first clamping portion and the second clamping portion are respectively inserted into the first clamping slot and the second clamping slot.

[0013] Preferably, the first body is provided with a groove, which is recessed from the bottom surface of the first body. The electromagnet has a yoke, which is accommodated in the groove. The yoke protrudes out of the first body to form a second clamping part; the supporting part covers the opening of the groove so as to encapsulate the yoke in the groove.

[0014] The beneficial effects of the present invention are as follows: glue is injected into a plurality of glue grooves, and the supporting part and the protective shell are firmly bonded together by the glue in the glue grooves, so as to avoid the protective shell and the body being separated and causing the relay to be used improperly. The first body and the second body are plugged together and assembled together, which avoids interference and collision during the assembly process, and improves the assembly efficiency and assembly yield of the relay, compared with the electromagnet, the moving terminal and the static terminal being assembled on the same body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0017] Figure 3 It is a schematic diagram of the decomposition structure of the present invention;

[0018] Figure 4 A schematic diagram of the decomposed structure of another perspective of the present invention;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the protective shell of the present invention;

[0020] Figure 6 for Figure 5 Schematic diagram of the local enlarged structure of part A.

[0021] Reference numerals include:

[0022] 1—first body 2—electromagnet 3—moving terminal

[0023] 4—Second body 5—Static terminal 6—Protective shell

[0024] 7—accommodating cavity 8—supporting portion 9—carrying portion

[0025] 11—Glue storage groove 12—Ventilation hole 13—Air gap

[0026] 14—stop surface 15—first card slot 16—second card slot

[0027] 17—first clamping part 18—second clamping part 19—first plate

[0028] 21—second plate 22—first tank 23—second tank

[0029] 24—third card slot 25—isolation strip 26—card plate part

[0030] 27—Terminal 28—Welding foot 29—Fixed part

[0031] 31 - connection part 32 - clearance groove 33 - sliding hole

[0032] 34 - groove 35 - yoke 36 - recessed hole. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0034] See also Figures 1 to 6 As shown, an insulator split electromagnetic relay of the present invention comprises a first body 1, an electromagnet 2 mounted on the first body 1, a moving terminal 3 mounted on the first body 1 or on the electromagnet 2, a second body 4 plugged with the first body 1, and a static terminal 5 mounted on the second body 4. The electromagnet 2 is used to drive the moving terminal 3 to move, and the moving moving terminal 3 connects or disconnects the static terminal 5. The first body 1 and the second body 4 are both made of insulating plastic.

[0035] It also includes a protective shell 6, which is made of insulating plastic. The protective shell 6 is provided with a receiving cavity 7 for accommodating the first body 1, the electromagnet 2, the moving terminal 3, the second body 4 and the static terminal 5. The receiving cavity 7 is concavely formed from the bottom surface of the protective shell 6. The protective shell 6 is roughly in the shape of a hollow rectangular parallelepiped.

[0036] The second body 4 has a supporting portion 8 and a bearing portion 9 arranged crosswise with the supporting portion 8. The second body 4 is an integrated structure. Preferably, the second body 4 is L-shaped. The supporting portion 8 and the bearing portion 9 are perpendicular to each other. The bearing portion 9 is formed by protruding from the top surface of the supporting portion 8. The first body 1 is pressed on the supporting portion 8 under the action of gravity. The first body 1 is plugged and matched with the bearing portion 9. The static terminal 5 is installed on the bearing portion 9.

[0037] The protective shell 6 has a plurality of glue containing grooves 11 penetrating the inner wall of the accommodating cavity 7 . The plurality of glue containing grooves 11 are arranged around the supporting portion 8 . The glue contained in the glue containing grooves 11 is used to bond the protective shell 6 and the supporting portion 8 .

[0038] When assembling the relay, glue is injected into the multiple glue grooves 11, and the supporting portion 8 and the protective shell 6 are firmly bonded together by the glue in the glue grooves 11 to prevent the protective shell 6 from being separated from the body and causing the relay to be used improperly. The first body 1 and the second body 4 are plugged together and assembled together. Compared with the electromagnet 2, the moving terminal 3, and the static terminal 5 being assembled on the same body, the interference and collision of the relay components during the assembly process are avoided to cause damage, thereby improving the assembly efficiency and assembly yield of the relay.

[0039] The top wall of the protective shell 6 is provided with an air hole 12 connected to the accommodating chamber 7, and an air gap 13 connected to the accommodating chamber 7 is provided between the inner wall of the accommodating chamber 7 and the supporting portion 8, and the outside air enters the accommodating chamber 7 through the air gap 13. During the use of the relay, the relay generates heat, which increases the temperature of the air in the accommodating chamber 7. Under the action of air thermal convection, the hot air in the accommodating chamber 7 escapes through the air hole 12, and the outside cold air enters the accommodating chamber 7 through the air gap 13, so as to achieve rapid heat dissipation and cooling of the relay, and avoid malfunction of the relay due to temperature increase.

[0040] Preferably, the air hole 12 is located on the top wall of the protective shell 6 close to the side wall of the protective shell 6, that is, the air hole 12 is located at the corner of the top wall of the protective shell 6, which prevents the top wall of the protective shell 6 from being damaged due to low strength compared to the air hole 12 being located in the center of the top wall of the protective shell 6.

[0041] The glue groove 11 passes through the bottom surface of the protective shell 6. The protective shell 6 is provided with a stop surface 14 extending into the glue groove 11. The stop surface 14 is located between the bottom surface of the supporting portion 8 and the top surface of the supporting portion 8. Through the setting of the stop surface 14, after the glue is injected into the glue groove 11, the stop surface 14 blocks the glue in the glue groove 11, increases the amount of glue in the glue groove 11, and improves the bonding force between the protective shell 6 and the supporting portion 8, ensuring that the two are firmly bonded together. In addition, through the position setting of the stop surface 14, it is prevented that the glue in the glue groove 11 passes over the supporting portion 8 and enters the accommodating cavity 7 to damage the accessories of the relay.

[0042] The upper and lower ends of the bearing portion 9 are respectively provided with a first card slot 15 and a second card slot 16, the upper end of the first body 1 is provided with a first card portion 17 inserted into the first card slot 15, and the lower end of the first body 1 or the lower end of the electromagnet 2 is provided with a second card portion 18 inserted into the second card slot 16. Through the cooperation of the card portion and the card slot, the first body 1 and the second body 4 are ensured to be quickly plugged and assembled together, without the need to use fasteners such as screws to fix the two bodies together, thereby improving the assembly efficiency of the two bodies.

[0043] The first clamping part 17 includes a first plate 19 and a second plate 21 intersecting the first plate 19. Preferably, the first plate 19 and the second plate 21 are vertically arranged. The first slot 15 includes a first slot 22 and a second slot 23 intersecting the first slot 22. The first plate 19 and the second plate 21 are respectively inserted into the first slot 22 and the second slot 23. Through the insertion and matching of the first clamping part 17 and the first slot 15, the inner slot wall of the first slot 15 blocks and contacts the first clamping part 17, so as to prevent the first body 1 from moving up and down relative to the second body 4, and prevent the first body 1 from moving left and right relative to the second body 4.

[0044] The bearing part 9 is provided with a third card slot 24, the first card slot 15 and the second card slot 16 are both recessed from the side of the bearing part 9 close to the electromagnet 2, and the third card slot 24 is recessed from the side of the bearing part 9 away from the electromagnet 2, that is, the first card slot 15 and the third card slot 24 are recessed from the left and right sides of the bearing part 9 away from each other, during the plug-in assembly process of the first body 1 and the second body 4, the static terminal 5 is prevented from interfering with and colliding with the first card portion 17, the second card portion 18 and the electromagnet 2, thereby improving the assembly yield of the relay. The static terminal 5 is installed on the bearing part 9, and the static terminal 5 is provided with a card plate portion 26 inserted into the third card slot 24.

[0045] The load-bearing portion 9 is provided with an isolation strip 25, which is extended along the length direction of the load-bearing portion 9. There are multiple third card slots 24, which are respectively located on the left and right sides of the isolation strip 25. There are two static terminals 5, which are respectively located on the left and right sides of the isolation strip 25. The card plate portions 26 of the two static terminals 5 are respectively installed in the second card slots 16 on both sides of the isolation strip 25.

[0046] The two static terminals 5 are separated by the isolation strip 25 to prevent interference and collision between the two static terminals 5 during assembly to the load-bearing portion 9, thereby improving the assembly yield of the two static terminals 5. At the same time, the two static terminals 5 are prevented from contacting each other during use, thereby improving the performance of the relay. The moving terminal 3 is used to conduct and contact one static terminal 5. When the electromagnet 2 is energized, the electromagnet 2 drives the moving terminal 3 to conduct the first static terminal 5; when the electromagnet 2 is de-energized, the moving terminal 3 is reset under the action of the elastic force and then conducts the second static terminal 5.

[0047] The first body 1 is provided with two connecting terminals 27 for conducting the electromagnet 2, and the connecting terminals 27 include welding feet 28 penetrating the supporting portion 8, a fixing portion 29 installed on the first body 1, and a connecting portion 31 protruding from the first body 1; the second body 4 is provided with two clearance grooves 32, which are formed by recessing from two sides of the second body 4 away from each other, and the connecting portions 31 of the two connecting terminals 27 are respectively located in the two clearance grooves 32. In actual use, the two ends of the coil of the electromagnet 2 are respectively welded to the connecting portion 31 in the clearance groove 32, so that the electromagnet 2 is conducted with the connecting terminals 27, and the groove wall of the clearance groove 32 is used to protect the welding part of the connecting portion 31 and the coil of the electromagnet 2 to prevent it from being touched and damaged.

[0048] The supporting portion 8 is provided with two sliding holes 33, and the connection portions 31 of the two connection terminals 27 pass through the supporting portion 8 respectively through the two sliding holes 33. The free ends of the soldering feet 28 are used for soldering on an external circuit main board. The sliding holes 33 are extended along the length direction of the supporting portion 8, and the sliding holes 33 pass through the supporting portion 8 along the thickness direction of the supporting portion 8. The soldering feet 28 move in the sliding holes 33 so that the first clamping portion 17 and the second clamping portion 18 are respectively inserted into the first clamping slot 15 and the second clamping slot 16.

[0049] In actual use, the welding foot 28 is first aligned with the sliding hole 33, and then the first body 1 is pressed on the supporting portion 8, and then the first body 1 and the second body 4 are assembled in a direction close to each other. At this time, the welding foot 28 moves in the sliding hole 33 until the first clamping portion 17 is inserted into the first clamping groove 15 and the second clamping portion 18 is inserted into the second clamping groove 16, thereby realizing the quick plug-in assembly of the first body 1 and the second body 4.

[0050] The first body 1 is provided with a groove 34, which is formed by being recessed from the bottom surface of the first body 1. The electromagnet 2 has a yoke 35, which is accommodated in the groove 34. The yoke 35 protrudes out of the first body 1 to form a second clamping portion 18, that is, the lower end of the yoke 35 protrudes out of the first body 1 and is inserted into the second clamping groove 16; the supporting portion 8 covers the opening of the groove 34 so as to encapsulate the yoke 35 in the groove 34. Through the provision of the groove 34, the yoke 35 does not need to be inserted into the first body 1 by sliding along the thickness direction of the first body 1, so as to prevent dust generated by the sliding of the yoke 35 and the first body 1 from falling into the relay and interfering with the normal use of the relay.

[0051] In this embodiment, the iron core of the electromagnet 2 protrudes into the groove 34, and a portion of the yoke 35 located in the groove 34 has a recessed hole 36 for accommodating the iron core. The iron core in the groove 34 is used to block the inner hole wall of the recessed hole 36 of the yoke 35 to prevent the yoke 35 from withdrawing from the first body 1 and the second body 4, thereby ensuring that the yoke 35 is firmly assembled with the first body 1 and the second body 4.

[0052] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. An insulator split type electromagnetic relay, characterized in that: It includes a first body, an electromagnet arranged on the first body, a moving terminal arranged on the first body or the electromagnet, a second body plugged with the first body, and a static terminal arranged on the second body, the electromagnet is used to drive the moving terminal to turn on or off the static terminal; it also includes a protective shell, the protective shell is provided with a accommodating cavity for accommodating the first body, the electromagnet, the moving terminal, the second body and the static terminal; the second body has a supporting portion and a bearing portion arranged crosswise with the supporting portion, the first body is pressed on the supporting portion, and the first body is plugged with the bearing portion; the protective shell has a plurality of glue-containing grooves penetrating the inner cavity wall of the accommodating cavity, the plurality of glue-containing grooves are arranged around the supporting portion, and the glue contained in the glue-containing grooves is used to bond the protective shell and the supporting portion; the upper and lower ends of the bearing portion are respectively provided with a first card slot and a second card slot. Two card slots, the upper end of the first body is provided with a first card part which is loaded into the first card slot, and the lower end of the first body or the lower end of the electromagnet is provided with a second card part which is loaded into the second card slot; the bearing part is provided with a third card slot, the first card slot and the second card slot are both recessed from the side of the bearing part close to the electromagnet, and the third card slot is recessed from the side of the bearing part away from the electromagnet; the static terminal is arranged on the bearing part, and the static terminal is provided with a card plate part which is loaded into the third card slot; the bearing part is provided with an isolation strip, and the number of the third card slots is multiple, and the multiple third card slots are respectively located on both sides of the isolation strip; the number of the static terminals is two, and the two static terminals are respectively located on both sides of the isolation strip, and the card plate parts of the two static terminals are respectively loaded into the second card slots on both sides of the isolation strip; the first body is made of insulating plastic.

2. The insulator split type electromagnetic relay according to claim 1, characterized in that: The top wall of the protective shell is provided with an air hole connected with the accommodating cavity, and an air gap connected with the accommodating cavity is provided between the inner cavity wall of the accommodating cavity and the supporting portion, and external air enters the accommodating cavity through the air gap.

3. The insulator split type electromagnetic relay according to claim 1, characterized in that: The glue containing groove passes through the bottom surface of the protective shell, and the protective shell is provided with a stopping surface extending into the glue containing groove, and the stopping surface is located between the bottom surface of the supporting part and the top surface of the supporting part.

4. The insulator split type electromagnetic relay according to claim 1, characterized in that: The first clamping part includes a first plate body and a second plate body intersecting the first plate body, the first clamping slot includes a first slot body and a second slot body intersecting the first slot body, and the first plate body and the second plate body are respectively installed in the first slot body and the second slot body.

5. The insulator split type electromagnetic relay according to claim 1, characterized in that: The first body is provided with two connecting terminals for conducting the electromagnet, and the connecting terminals include a welding foot penetrating the supporting part, a fixing part arranged on the first body, and a connecting part protruding from the first body; the second body is provided with two making way grooves, and the two making way grooves are recessed from two sides of the second body away from each other, and the connecting parts of the two connecting terminals are respectively located in the two making way grooves.

6. The insulator split type electromagnetic relay according to claim 1, characterized in that: The supporting portion is provided with two sliding holes, and the connecting parts of the two connecting terminals respectively penetrate the supporting portion through the two sliding holes. The sliding holes are extended along the length direction of the supporting portion, and the sliding holes penetrate the supporting portion along the thickness direction of the supporting portion. The welding feet move in the sliding holes so that the first clamping portion and the second clamping portion are respectively inserted into the first clamping slot and the second clamping slot.

7. The insulator split type electromagnetic relay according to claim 1, characterized in that: The first body is provided with a groove, which is concavely formed from the bottom surface of the first body. The electromagnet has a yoke piece, which is accommodated in the groove. The yoke piece protrudes out of the first body to form a second clamping part; the supporting part covers the opening of the groove to encapsulate the yoke piece in the groove.

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