A double-coil relay for vehicle

Abstract

This utility model relates to a dual-coil automotive relay. Two concave yokes are arranged side-by-side on a base. A coil frame with an iron core is vertically installed within the groove of each concave yoke. Two first isolation grooves are arranged side-by-side on the base. A first conductive sheet is installed within each first isolation groove. A through hole is opened at the bottom of the first isolation groove to expose the first conductive sheet. The end of the iron core passes through the groove of the concave yoke and is fitted with a double-ended insert. The double-ended insert includes two inserts and a horizontal plate connecting the two inserts. The horizontal plate is placed between the first conductive sheet and the concave yoke. The base has insert slots for the inserts of the double-ended insert to pass through. The end of the iron core passes sequentially through the concave yoke, the first conductive sheet, and the first isolation groove before being riveted to the first conductive sheet. The beneficial effects of this utility model are: improving the strength and stability of the connection between the base and the electrical components.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically a dual-coil automotive relay. Background Technology

[0002] As a core control and protection component in automotive electrical systems, automotive relays play a crucial role in circuit switching, load management, and fault isolation. If a relay fails during vehicle operation, it can easily cause an accident. Therefore, the stability of automotive relays is extremely important.

[0003] Patent application CN201410439159.3 discloses a dual-coil automotive relay and its assembly method, including a base, a coil frame 1 with an iron core, and a coil frame 2 with an iron core. The coil frame 1 and the coil frame 2 are riveted to the base. A metal sheet is riveted to the top of one end of each of the concave yokes 1 and 2. A movable contact is provided on the bottom surface of the movable end of the metal sheet. A concave yoke 3 is provided below the movable end of the metal sheet. The common ground pin of the two coils is led out from the contact surface between the concave yoke 3 and the base. The concave yokes 1, 2, 3, the coil frame 1 with an iron core, and the coil frame 2 with an iron core are riveted to the base. The patent document does not elaborate on the specific riveting structure of the coil frame 1, the coil frame 2, and the concave yoke 3. Considering common riveting methods on the market, such as the electromagnetic relay described in patent application CN202111572978.1, the electromagnetic system also includes an iron core, which is inserted into the coil frame from top to bottom and riveted to the transverse part of the yoke, thereby fixing the base and the coil frame. In this document, the coil frame is fixed by the iron core directly passing through the yoke and riveting it to it. When this coil frame fixing method is applied to document CN201410439159.3, the riveting structure of coil frame one and coil frame two on the base is as follows: the iron core is inserted into the coil frame from top to bottom, passes through the concave yoke and is riveted to the base; the riveting structure of concave yoke three on the base is as follows: the connecting post of the common ground pin passes through the base from bottom to top and is inserted into concave yoke three, and the end of the connecting post is riveted to concave yoke three. However, such a riveting structure has the following problems in actual use: the base is made of plastic, while the iron core and connecting post are made of metal. When the relay is working, the iron core and connecting post will heat up, causing the part of the base directly riveted to the iron core and the part of the base in contact with the concave yoke to soften due to heat, reducing the connection strength between the parts and thus resulting in product quality defects.

[0004] Patent application CN201410439159.3 also includes a slot on the base for leading out relay pins. The pins pass through the slot from the bottom of the base and press tightly against the leads of the resistor and LED on the base, ensuring close contact between the pins and the resistor and LED. While this method of mounting the resistor and LED leads involves pressing them firmly onto the base with the pins, improper installation can cause the resistor and LED leads to become loose and difficult to detect, thus affecting the normal operation of the automotive relay. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a dual-coil automotive relay that improves the strength and stability of the connection between the base and electrical components, in order to address the shortcomings of the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-coil automotive relay, comprising a base and a housing mounted on the base. Two concave yokes are arranged side-by-side on the base. A coil frame with an iron core is vertically arranged within the groove of each concave yoke. Metal sheets are riveted to the top of each of the two concave yokes. A second concave yoke is located below the movable end of each metal sheet. A common ground pin for leading out the two coils is connected to the second concave yoke. Two first isolation slots are arranged side-by-side on the base. A first conductive sheet is installed in the first isolation groove. A through hole is opened at the bottom of the first isolation groove to expose the first conductive sheet. The end of the iron core passes through the groove of the concave yoke and is fitted with a double-ended insert. The double-ended insert includes two inserts and a horizontal plate connecting the two inserts. The horizontal plate is placed between the first conductive sheet and the concave yoke. The base is provided with insert slots for the inserts of the double-ended insert to pass through. The end of the iron core passes through the concave yoke, the first conductive sheet, and the first isolation groove in sequence and is riveted to the first conductive sheet.

[0007] The present invention, which has the above-mentioned features, provides a first isolation groove in the base for placing the first conductive sheet. The iron core is riveted to the first conductive sheet, and the riveting stress and the heat generated by the working of the iron core are conducted to the first conductive sheet instead of acting directly on the plastic base. This avoids brittle fracture and heat softening caused by the direct riveting of the base to the iron core, and improves the connection strength between the coil frame and the base.

[0008] A further feature of this invention is that the base is provided with a second isolation groove, a second conductive sheet is installed in the second isolation groove, a through hole is opened at the bottom of the second isolation groove to expose the second conductive sheet, the bottom of the groove of the second concave yoke is placed in the second isolation groove and is in contact with the second conductive sheet, and the connecting post in the common ground pin passes through the through hole, the second conductive sheet, and the bottom of the groove of the second concave yoke and is riveted to the second concave yoke.

[0009] The present invention, which has the above-mentioned features, separates the base from the concave yoke by setting a second isolation groove in the base for placing the second conductive sheet, thereby preventing the base from softening due to the heat generated by the concave yoke and extending the service life of the base.

[0010] A further feature of this invention is that: two first mounting grooves are arranged side by side on the upper surface of the base, and two insert slots are correspondingly arranged on the inner sidewall of the first mounting grooves. The first isolation groove is located between the two insert slots on the inner sidewall of the first mounting groove, and its two ends in the length direction extend toward the interior of the base to form a first isolation cavity inside the base. The two ends of the first conductive sheet are placed in the first isolation cavity, and its upper and lower end faces are in contact with the upper and lower cavity walls of the first isolation cavity. A first limiting post is erected in the first isolation cavity. The two ends of the first conductive sheet in the length direction are provided with a first semi-circular groove adapted to the first limiting post. The horizontal plate of the double-ended insert is placed in the first mounting groove, and the horizontal plate is at the same level as the upper surface of the base.

[0011] The present invention, having the above-mentioned features, has the following: both ends of the first conductive sheet are placed in the first isolation cavity, the first isolation cavity restricts the movement of the first conductive sheet in the vertical direction, the first semi-circular groove of the first conductive sheet is engaged with the first limiting post, the first limiting post restricts the movement of the first conductive sheet in the horizontal direction, and by setting the first isolation cavity and the first limiting post to limit the first conductive sheet, the first conductive sheet is prevented from moving in the first isolation groove without the aid of other tools, making installation convenient; the double-ended insert plate is flush with the upper surface of the base, improving the installation stability of the concave yoke.

[0012] A further feature of this invention is that: a rectangular frame is provided on the upper surface of the base, the second isolation groove is located below the rectangular frame, the two ends of the second isolation groove extend toward the interior of the base in the length direction and form a second isolation cavity inside the base, the two ends of the second conductive sheet are placed in the second isolation cavity, and its upper and lower end faces are in contact with the upper and lower cavity walls of the second isolation cavity, a second limiting post is erected in the second isolation cavity, and the two ends of the second conductive sheet in the length direction are provided with a second semi-circular groove adapted to the second limiting post.

[0013] The present invention, which has the above-mentioned features, limits the second conductive sheet by setting a second isolation cavity and a second limiting post, thereby preventing the second conductive sheet from moving in the second isolation groove without the aid of other tools, and making installation convenient.

[0014] A further feature of this invention is that the first conductive sheet has clearance grooves at both ends in the width direction.

[0015] The present invention, which has the above-mentioned features, provides clearance space for the insert slot, making the installation of the first conductive sheet more stable.

[0016] A further feature of this invention is that: blocks are provided on both sides of the second isolation groove in the width direction, and slots are provided at both ends of the second conductive sheet in the width direction.

[0017] The present invention, which has the above-mentioned features, further restricts the installation position of the second conductive sheet by cooperating with the stop block and the slot.

[0018] A further feature of this invention is that: the upper surface of the base is symmetrically provided with two protruding mounting strips, and the mounting strips are symmetrically provided with two pin slots arranged along their length direction. A pin piece is inserted into the pin slot, and the pin piece has a vertically upward-arriving connecting strip. A resistor and a light-emitting diode are provided between the two connecting strips, and the pins of the resistor and the light-emitting diode are welded to the connecting strips.

[0019] The present invention, which has the above-mentioned features, replaces the pressing in the prior art with welding, avoiding poor contact caused by insufficient installation pressure or positional deviation; the quality of welding can be inspected by instruments, preventing defects such as incomplete welding and false welding from entering the production line and reducing the after-sales failure rate.

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the base in an embodiment of the present utility model.

[0023] Figure 3 This is a first cross-sectional view of the base of an embodiment of the present utility model.

[0024] Figure 4 This is a second cross-sectional view of the base of an embodiment of the present utility model.

[0025] Figure 5 This is a cross-sectional view of the base and the concave yoke of an embodiment of the present invention.

[0026] Figure 6 This is a cross-sectional view of the base and concave yoke of an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the concave yoke and coil frame in an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the metal sheet in an embodiment of the present invention. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings: like Figure 1-8 The illustrated dual-coil automotive relay includes a base 1 and a housing 23 mounted on the base. Two concave yokes 2 are arranged side-by-side on the base 1. A coil frame 4 with an iron core 3 is vertically mounted within the groove of each concave yoke 2. Metal plates 22 are riveted to the top of each end of the two concave yokes 2. A second concave yoke 20 is located below the movable end of each metal plate 22. A common ground pin 21 for leading out the two coils is connected to the second concave yoke 20. Two first isolation slots 11 are arranged side-by-side on the base 1, and a coil is installed within each first isolation slot 11. There is a conductive sheet 5. The bottom of the first isolation groove 11 has a through hole that exposes the conductive sheet 5. The end of the iron core 3 passes through the groove of the concave yoke 2 and is fitted with a double-headed insert 6. The double-headed insert 6 includes two inserts 61 and a horizontal plate 62 connecting the two inserts 61. The horizontal plate 62 is placed between the conductive sheet 5 and the concave yoke 2. The base 1 is provided with an insert groove 12 for the inserts 61 of the double-headed insert 6 to pass through. The end of the iron core 3 passes through the concave yoke 2, the conductive sheet 5 and the first isolation groove 11 in sequence and is riveted to the conductive sheet 5.

[0030] Two first mounting grooves 13 are arranged side by side on the upper surface of the base 1. Two insert slots 12 are correspondingly arranged on the inner sidewall of the first mounting groove 13. The first isolation groove 11 is located between the two insert slots 12 on the inner sidewall of the first mounting groove 13. Its two ends in the length direction extend into the base 1 and form a first isolation cavity 14 inside the base 1. The two ends of the conductive sheet 5 are placed in the first isolation cavity 14, and its upper and lower end faces are in contact with the upper and lower cavity walls of the first isolation cavity 14. A first limiting post 141 is erected in the first isolation cavity 14. The two ends of the conductive sheet 5 in the length direction are provided with semi-circular grooves 51 that are adapted to the first limiting post 141. The horizontal plate 62 of the double-ended insert 6 is placed in the first mounting groove 13. The horizontal plate 62 is at the same level as the upper surface of the base 1. The two ends of the conductive sheet 5 in the width direction are provided with relief grooves 52.

[0031] The base 1 is also provided with a second isolation groove 16, and a conductive sheet 5 is installed in the second isolation groove 16. A through hole is opened at the bottom of the second isolation groove 16 to expose the conductive sheet 5. The bottom of the groove of the concave yoke 20 is placed in the second isolation groove 16 and is in contact with the conductive sheet 5. The connecting post 211 in the ground pin 21 passes through the through hole, the conductive sheet 5, and the bottom of the groove of the concave yoke 20 and is riveted to the concave yoke 20.

[0032] A rectangular frame 17 is provided on the upper surface of the base 1. The second isolation groove 16 is located below the rectangular frame 17. The two ends of the second isolation groove 16 extend into the base 1 in the length direction and form a second isolation cavity 18 inside the base 1. The two ends of the conductive sheet 5 are placed in the second isolation cavity 18, and its upper and lower end faces are in contact with the upper and lower cavity walls of the second isolation cavity 18. A second limiting post 19 is erected in the second isolation cavity 18. The two ends of the conductive sheet 5 in the length direction are provided with semi-circular grooves 51 that are adapted to the second limiting post 19. The two sides of the second isolation groove 16 in the width direction are provided with blocks 161. The two ends of the conductive sheet 5 in the width direction are provided with relief grooves 52 that are adapted to the blocks 161.

[0033] The upper surface of the base 1 is symmetrically provided with two protruding mounting strips 15. The mounting strips 15 are symmetrically provided with two pin slots 151 arranged along their length. Pin pieces 7 are inserted into the pin slots 151. The pin pieces 7 have vertically upward connecting strips 71. A resistor 8 and a light-emitting diode 9 are provided between the two connecting strips 71. The pins of the resistor 8 and the light-emitting diode 9 are welded to the connecting strips 71.

[0034] Other structures of the dual-coil automotive relay in this application are not elaborated in this article. The unelaborated parts are consistent with the structure in the patent document "A Dual-Coil Automotive Relay and Its Assembly Method" with patent application number CN201410439159.3, and will not be described again.

Claims

1. A dual-coil automotive relay, comprising a base and a housing mounted on the base, wherein two concave yokes are arranged side-by-side on the base, and a coil frame with an iron core is vertically arranged in the groove of each concave yoke. Metal sheets are riveted to the top of each of the two concave yokes, and a second concave yoke is located below the movable end of each metal sheet. A common ground pin for leading out the two coils is connected to the second concave yoke, characterized in that: The base has two first isolation grooves arranged side by side. A first conductive sheet is installed in the first isolation groove. A through hole is opened at the bottom of the first isolation groove to expose the first conductive sheet. The end of the iron core passes through the groove of the concave yoke and is fitted with a double-ended insert. The double-ended insert includes two inserts and a horizontal plate connecting the two inserts. The horizontal plate is placed between the first conductive sheet and the concave yoke. The base has insert grooves for the inserts of the double-ended insert to pass through. The end of the iron core passes through the concave yoke, the first conductive sheet, and the first isolation groove in sequence and is riveted to the first conductive sheet.

2. The dual-coil automotive relay according to claim 1, characterized in that: The base is also provided with a second isolation groove, in which a second conductive sheet is installed. A through hole is opened at the bottom of the second isolation groove to expose the second conductive sheet. The bottom of the groove of the second concave yoke is placed in the second isolation groove and is in contact with the second conductive sheet. The connecting post in the common ground pin passes through the through hole, the second conductive sheet, and the bottom of the groove of the second concave yoke and is riveted to the second concave yoke.

3. A dual-coil automotive relay according to claim 1, characterized in that: The upper surface of the base is provided with two first mounting grooves arranged side by side. Two insert slots are correspondingly arranged on the inner sidewall of the first mounting groove. The first isolation groove is located between the two insert slots on the inner sidewall of the first mounting groove. Its two ends in the length direction extend into the base and form a first isolation cavity inside the base. The two ends of the first conductive sheet are placed in the first isolation cavity, and its upper and lower end faces are in contact with the upper and lower cavity walls of the first isolation cavity. A first limiting post is erected in the first isolation cavity. The two ends of the first conductive sheet in the length direction are provided with a first semi-circular groove adapted to the first limiting post. The horizontal plate of the double-ended insert is placed in the first mounting groove. The horizontal plate is at the same level as the upper surface of the base.

4. A dual-coil automotive relay according to claim 2, characterized in that: The upper surface of the base is provided with a rectangular frame, the second isolation groove is located below the rectangular frame, the two ends of the second isolation groove extend toward the interior of the base in the length direction and form a second isolation cavity inside the base, the two ends of the second conductive sheet are placed in the second isolation cavity, and its upper and lower end faces are in contact with the upper and lower cavity walls of the second isolation cavity, a second limiting post is erected in the second isolation cavity, and the two ends of the second conductive sheet in the length direction are provided with a second semi-circular groove adapted to the second limiting post.

5. A dual-coil automotive relay according to claim 3, characterized in that: The first conductive sheet has clearance grooves at both ends in the width direction.

6. A dual-coil automotive relay according to claim 4, characterized in that: The second isolation groove has blocks on both sides in the width direction, and the second conductive sheet has corresponding slots at both ends in the width direction.

7. A dual-coil automotive relay according to any one of claims 1-6, characterized in that: The upper surface of the base is symmetrically provided with two raised mounting strips. The mounting strips are symmetrically provided with two pin slots arranged along their length. Pin plates are inserted into the pin slots. The pin plates have vertically upward connecting strips. A resistor and a light-emitting diode are provided between the two connecting strips. The pins of the resistor and the light-emitting diode are welded to the connecting strips.

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