CN211294780U

CN211294780U - Double-coil electromagnet for engine switch

Info

Publication number: CN211294780U
Application number: CN201922348393.6U
Authority: CN
Inventors: 吴东
Original assignee: Wuxi Chuxin Hydraulic Wholeset Equipment Co ltd
Current assignee: Wuxi Chuxin Hydraulic Wholeset Equipment Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-08-18
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to an engine switch is with twin coil electro-magnet. Including mounting panel and shell, there is quiet iron core in the shell one end, has the shrouding in the other end, has the skeleton between shrouding and quiet iron core. The framework is provided with a coil. The inner side of the static iron core is provided with an axial boss which extends into the adjacent end of the framework. The closing plate is provided with a rod hole, and a movable iron core is arranged in the rod hole. The movable iron core is a round rod, the inner end of the movable iron core extends into the framework in a sliding manner, and the outer end of the movable iron core extends out of the sealing plate. The outer section of the movable iron core is provided with a spring. The method is characterized in that: the axial of the movable iron core is provided with a central hole, a limiting rod is arranged in the central hole, one end of the limiting rod is provided with a stop head, and the other end of the limiting rod penetrates through the inner section of the limiting rod in a sliding manner and then is connected with the static iron core. The coil comprises an inner coil and an outer coil, the power of the inner coil is larger than that of the outer coil, and an insulating isolation layer is arranged between the inner coil and the outer coil. Adopt the utility model discloses, can reduce energy consumption and running cost.

Description

Double-coil electromagnet for engine switch

Technical Field

The utility model relates to an electromagnet. Specifically, the double-coil electromagnet for the engine switch is characterized in that a movable iron core and a static iron core are instantly attracted by using large current. It is especially suitable for automobile engine switch.

Background

As known in the engine switch production industry, the power connection of an automobile engine switch means the attraction of a movable iron core and a static iron core. To keep the engine in the running state all the time, the power supply needs to be in the on state all the time, that is, the movable iron core and the static iron core need to be in the attraction state all the time. And the coil is required to supply power to the movable iron core and the static iron core all the time when the movable iron core and the static iron core are kept in the attraction state all the time. After the movable iron core and the static iron core are attracted, a large holding force can be obtained only by a small current. At present, only one coil is used on an electromagnet for an engine switch, and one coil is used for realizing attraction of a movable iron core and a static iron core and retention force after attraction. Because the power of the coil is required to be large when the moving iron core and the static iron core are combined, the current required for maintaining the holding force after attracting is very small. If only one coil is used, the power of the coil is required to be large. As soon as the coil power is large, the heat productivity is high, and the energy loss is large. Therefore, the electromagnet for the engine switch using only one coil has large energy loss and high operation cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide an engine is twin coil electro-magnet for switch. Adopt the utility model discloses, can reduce energy loss and running cost.

The utility model discloses the above-mentioned problem that solves is realized by following technical scheme:

the utility model discloses an engine switch is with twin coil electro-magnet, including mounting panel and shell, the shell is the pipe, has quiet iron core in its one end, has the shrouding in the other end, has the skeleton between shrouding and quiet iron core. The skeleton contains the pipe, and its both ends circumference all has radial arch, has the coil on the pipe between radial arch. The static iron core contains the disk with shell internal diameter adaptation, and disk medial surface center has the axial boss, and the axial boss stretches into in the adjacent end of skeleton. The closing plate is provided with a rod hole, and a movable iron core is arranged in the rod hole. The movable iron core is a round rod, the inner end of the movable iron core extends into the framework in a sliding mode, and the outer end of the movable iron core extends out of the sealing plate. The outer section of the movable iron core is provided with a spring, one end of the spring is abutted against the sealing plate, and the other end of the spring is connected with the outer end of the movable iron core. Under the non-compression state of the spring, a space is reserved between the inner end of the movable iron core and the static iron core. The method is characterized in that: the movable iron core has axial central hole and longitudinal middle step to make the inner section diameter smaller than the outer section diameter. A limiting rod is arranged in the central hole, one end of the limiting rod is provided with a stop head, and the other end of the limiting rod penetrates through the inner section of the limiting rod and then is connected with the static iron core. The coil comprises an inner coil and an outer coil, the power of the inner coil is larger than that of the outer coil, and an insulating isolation layer is arranged between the inner coil and the outer coil.

The outer end of the central hole is internally provided with threads and is provided with a pressing bolt. A flexible pipe is arranged at the extending end of the movable iron core, and a space is reserved between the inner diameter of the flexible pipe and the spring; the inner end of the flexible pipe is connected with the outer side face of the seal plate, a radial inner convex edge is arranged at the periphery of the outer end of the flexible pipe, and the radial inner convex edge is pressed on the outer end of the movable iron core by means of a pressing sheet and a bolt.

The inner side surface of the axial boss and the inner end of the movable iron core are respectively provided with a conical pit and a conical head, the conical pits and the conical heads have the same taper, and when the movable iron core and the static iron core are combined, the conical heads extend into the conical pits.

According to the scheme, the coil comprises the inner coil and the outer coil, the power of the inner coil is larger than that of the outer coil, and the insulating isolation layer is arranged between the inner coil and the outer coil. The inner coil is used for realizing instant attraction of the movable iron core and the static iron core through large current, and the outer coil is used for realizing retention force of long-time attraction of the movable iron core and the static iron core through small current. The attraction and the maintenance of the movable iron core and the static iron core respectively adopt a high-power coil and a low-power coil to provide power, so that the energy consumption is reduced, and the operation cost is also reduced.

Drawings

Fig. 1 is a schematic diagram of a double-coil electromagnet for an engine switch according to the present invention.

Detailed Description

As shown in fig. 1, the utility model discloses a twin coil electro-magnet for engine switch includes mounting panel 8 and shell 6, shell 6 is the pipe, has quiet iron core in its one end, has shrouding 20 in the other end, is provided with the skeleton between shrouding 20 and quiet iron core. The skeleton contains pipe 22, and pipe 22 both ends circumference all processes radial protrusion 21, and it has the coil to wind on the pipe 22 between radial protrusion 21. The static iron core comprises a wafer 3 matched with the inner diameter of the shell 6, an axial boss 4 is machined in the center of the inner side face of the wafer 3, and the axial boss 4 extends into a circular tube 22 at the adjacent end of the framework. A rod hole is processed on the sealing plate 20, and a movable iron core 11 is installed in the rod hole. The movable iron core 11 is a round rod, the inner end of which is inserted into the framework in a sliding manner, and the outer end of which is extended out of the sealing plate 20. The outer section of the movable iron core 11 is sleeved with a spring 12, one end of the spring 12 is abutted against the sealing plate 20, and the other end is connected with the outer end of the movable iron core 11. And in the non-compressed state of the spring 12, a distance is reserved between the inner end of the movable iron core 11 and the static iron core. The movable iron core 11 is axially provided with a central hole 17, and the longitudinal middle of the central hole 17 is provided with a step 19 which enables the diameter of the inner section to be smaller than that of the outer section. A limiting rod 10 is arranged in the central hole 17, one end of the limiting rod 10 is provided with a stop 18, and the other end of the limiting rod passes through the inner section of the limiting rod and then is connected with the static iron core. The outer end of the central hole 17 is internally threaded and provided with a hold-down bolt 13. The extending end of the movable iron core 11 is sleeved with a flexible pipe 16. The flexible tube 16 is a rubber tube, and a space is left between the inner diameter of the flexible tube and the spring 12. The inner end of the flexible tube 16 is connected to the outer side of the closure plate 20. Wherein, the outer end of the flexible tube 16 is processed with a radial inner flange 15 in the circumferential direction, and the radial inner flange is pressed on the outer end of the movable iron core 11 by the pressing sheet 14 and the bolt 13. The coil comprises an inner coil 9 and an outer coil 5, the power of the inner coil 9 is larger than that of the outer coil 5, and an insulating layer 7 is arranged between the inner coil and the outer coil.

The inner side surface of the axial boss 4 and the inner end of the movable iron core 11 are respectively provided with a conical pit 2 and a conical head 1, the conical degrees of the conical pit 2 and the conical head 1 are the same, and when the movable iron core and the static iron core are sucked, the conical head 1 extends into the conical pit 2.

In the mounted state, both the inner coil 9 and the outer coil 5 are connected to a power supply 23 via a controller 24 and a wire 25.

Claims

1. The double-coil electromagnet for the engine switch comprises an installation plate and a shell, wherein the shell is a round pipe, a static iron core is arranged in one end of the shell, a sealing plate is arranged in the other end of the shell, and a framework is arranged between the sealing plate and the static iron core; the framework comprises circular tubes, radial bulges are arranged at the circumferential directions of two ends of each circular tube, and a coil is arranged on the circular tube between the radial bulges; the static iron core comprises a circular sheet matched with the inner diameter of the shell, an axial boss is arranged in the center of the inner side surface of the circular sheet and extends into the adjacent end of the framework; the seal plate is provided with a rod hole, and a movable iron core is arranged in the rod hole; the movable iron core is a round rod, the inner end of the movable iron core extends into the framework in a sliding manner, and the outer end of the movable iron core extends out of the sealing plate; a spring is arranged on the outer section of the movable iron core, one end of the spring is abutted against the sealing plate, and the other end of the spring is connected with the outer end of the movable iron core; under the non-compression state of the spring, a space is reserved between the inner end of the movable iron core and the static iron core; the method is characterized in that: the axial of the movable iron core is provided with a central hole, and the longitudinal middle of the central hole is provided with a step which enables the diameter of the inner section of the central hole to be smaller than that of the outer section of the central hole; a limiting rod is arranged in the central hole, one end of the limiting rod is provided with a stop head, and the other end of the limiting rod penetrates through the inner section of the limiting rod and is connected with the static iron core; the coil comprises an inner coil and an outer coil, the power of the inner coil is larger than that of the outer coil, and an insulating isolation layer is arranged between the inner coil and the outer coil.

2. A dual coil electromagnet for engine switches as defined in claim 1, wherein: the outer end of the central hole is internally provided with a thread and is provided with a pressing bolt; a flexible pipe is arranged at the extending end of the movable iron core, and a space is reserved between the inner diameter of the flexible pipe and the spring; the inner end of the flexible pipe is connected with the outer side face of the seal plate, a radial inner convex edge is arranged at the periphery of the outer end of the flexible pipe, and the radial inner convex edge is pressed on the outer end of the movable iron core by means of a pressing sheet and a bolt.

3. A dual coil electromagnet for engine switches as defined in claim 1, wherein: the inner side surface of the axial boss and the inner end of the movable iron core are respectively provided with a conical pit and a conical head, the conical pits and the conical heads have the same taper, and when the movable iron core and the static iron core are combined, the conical heads extend into the conical pits.