CN209822570U - Energy-saving single-coil driven direct-current relay - Google Patents

Abstract

The utility model discloses an energy-saving single coil driven direct current relay, including contact system, motion, metal-back, magnetic conductive ring, U type yoke and coil pack, the contact system baseplane has yoke plate, and the motion is installed in the middle part of the contact system through, and the motion bottom is fixed with the drive iron plate, and U type yoke top is connected with the contact system and is fixed, and U type yoke internal center installs the magnetic conductive ring, and the magnetic conductive ring outside installs the coil pack who arranges in U type yoke; a metal shell is arranged in the magnetic conductive ring, the driving iron block is arranged in the metal shell in a lifting sliding fit manner, a permanent magnet and a yoke sheet are arranged outside the top end of the metal shell, and the permanent magnet and the yoke sheet are arranged in an up-and-down overlapping manner; the motion mechanism is provided with a step matched with the top of the contact system. The utility model discloses still install the permanent magnet between metal-back and coil pack, the permanent magnet can assist relay's lift action and position to keep, can effectively reduce coil pack's consumption.

Description

Energy-saving single-coil driven direct-current relay

Technical Field

The utility model relates to a single coil driven direct current relay technical field especially relates to an energy-saving single coil driven direct current relay.

Background

The direct current relay has higher requirement along with the improvement of the load capacity, the single coil structure with low power consumption can not drive the relay to work, and the temperature rise of the single coil structure with high power consumption is too high and energy-saving. The current common solution in the market is to use an energy-saving driving circuit board, so that the power consumption is high when the relay is started, the power consumption is reduced after the relay acts, and the working state of the relay is maintained with low power consumption. Energy-saving driving circuit boards generally fall into two forms: one is double-coil driving, when the relay is started, the inner winding and the outer winding work simultaneously, the relay is driven to act by high power consumption, the high-power winding coil stops working after a short time (about 100-200 milliseconds), and only the low-power winding coil is used for continuously working, so that the relay is in a working state; the other type is single-coil PWM driving, when the relay is started, the relay is driven to act by full-power work, the energy-saving circuit board carries out PWM modulation after a short time, power is supplied in a pulse mode to reduce power consumption, and meanwhile the relay is guaranteed to keep a working state. The energy-saving driving circuit board has two disadvantages: firstly, the cost of the circuit board is high, and the product cost is greatly increased; secondly, the circuit board has more components, and circuit faults are easy to occur to bring extra failure risks to products.

SUMMERY OF THE UTILITY MODEL

The weak point that exists to prior art, the utility model aims at providing an energy-saving single coil driven direct current relay is provided with the magnetic ring at U type yoke middle part, lets coil pack install in the magnetic ring outside, is equipped with the metal-back in the magnetic ring is inside, with moving mechanism's drive iron plate slidable mounting inside the metal-back, still install the permanent magnet between metal-back and coil pack, the permanent magnet can assist the lift action and the position maintenance of relay, can effectively reduce coil pack's consumption.

The purpose of the utility model is realized through the following technical scheme:

an energy-saving single-coil-driven direct-current relay comprises a contact system, a movement mechanism, a metal shell, a magnetic conduction ring, a U-shaped yoke and a coil assembly, wherein a yoke iron plate is arranged on the bottom plane of the contact system, the movement mechanism is installed in the middle of the contact system in a penetrating mode, a driving iron block corresponding to the yoke iron plate of the contact system is fixedly installed at the bottom of the movement mechanism, the top of the U-shaped yoke is fixedly connected with the contact system, the magnetic conduction ring is installed at the center inside the U-shaped yoke, and the coil assembly arranged inside the U-shaped yoke is installed outside the magnetic conduction ring; a metal shell is arranged in the magnetic conductive ring, the driving iron block is arranged in the metal shell in a lifting sliding fit manner, a permanent magnet and a yoke sheet are arranged outside the top end of the metal shell, and the permanent magnet and the yoke sheet are arranged in an up-and-down overlapping manner; and the motion mechanism is provided with a step matched with the top of the contact system.

In order to better realize the utility model discloses, the drive iron plate is opened there is the spring recess, install the spring in the spring recess of drive iron plate, the spring top is held with contact system bottom cooperation top.

Preferably, the cross section of the U-shaped yoke is in a U shape, a magnetic ring mounting hole groove is formed in the center of the bottom of the U-shaped yoke, and the bottom of the magnetic conductive ring is fixedly mounted in the magnetic ring mounting hole groove of the U-shaped yoke.

Compared with the prior art, the utility model, have following advantage and beneficial effect:

(1) the utility model discloses be provided with U type yoke, be provided with the magnetic ring at U type yoke middle part, let coil pack install in the magnetic ring outside, at the inside metal casing that is equipped with of magnetic ring, with motion's drive iron plate slidable mounting inside the metal casing, still install the permanent magnet between metal casing and coil pack, the permanent magnet can assist the lift action and the position of relay and keep, can effectively reduce coil pack's consumption.

(2) The utility model discloses be applied to on the single coil driven direct current relay, have advantages such as low-power consumption energy-conservation, operation stability, can solve traditional single coil direct current relay's circuit board inefficacy risk.

Drawings

Fig. 1 is a schematic sectional structure of the present invention;

fig. 2 is an assembly diagram of the present invention.

Wherein, the names corresponding to the reference numbers in the drawings are:

1-contact system, 2-permanent magnet, 3-yoke iron sheet, 4-metal shell, 5-magnetic conductive ring, 6-coil component, 7-U-shaped yoke iron, 8-motion mechanism, 9-driving iron block and 10-spring.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

as shown in fig. 1 and fig. 2, an energy-saving single-coil driven dc relay, including the dc relay body, the dc relay body has two contact heads and motion 8, and motion 8 top have with two contact head complex contact plates, 8 elevating movement of motion, the produced magnetic field of coil pack 6 and 8 rising movements of drive motion, magnetic field force for increasing motion 8 and rise, the utility model discloses the increase is provided with permanent magnet 2, and permanent magnet 2 can increase 8 magnetic field forces that rise of motion, also can keep 8 holding power of motion to summit position department of motion. Compare in current direct current relay, the utility model discloses still include contact system 1, motion 8, metal casing 4, magnetic ring 5, U type yoke 7 and coil pack 6, 1 baseplanes of contact system has yoke board, 1 middle part of contact system runs through and installs motion 8, 8 bottom fixed mounting of motion have with contact system 1's yoke board corresponding drive iron piece 9, 7 tops of U type yoke are connected fixedly with contact system 1, magnetic ring 5 is installed at 7 inside centers of U type yoke, magnetic ring 5 externally mounted arranges the inside coil pack 6 of U type yoke 7 in. The metal shell 4 is installed inside the magnetic conductive ring 5, the driving iron block 9 is installed in the metal shell 4 in a lifting sliding fit mode, the permanent magnet 2 and the yoke piece 3 are installed on the outer portion of the top end of the metal shell 4, and the permanent magnet 2 and the yoke piece 3 are arranged in an up-and-down overlapping mode. The moving mechanism 8 is provided with a step which is matched with the top of the contact system 1.

As shown in fig. 1, a spring groove is formed in the driving iron block 9, a spring 10 is installed in the spring groove of the driving iron block 9, the top end of the spring 10 is matched with and supported by the bottom of the contact system 1, and the bottom end of the spring 10 is supported and installed in the spring groove of the driving iron block 9, so that the spring 10 is matched and installed between the driving iron block 9 and the contact system 1, and the function of assisting the reset motion of the driving iron block 9 is achieved.

As shown in fig. 1 and 2, the cross section of the U-shaped yoke 7 is U-shaped, a magnetic ring mounting hole slot is formed in the center of the bottom of the U-shaped yoke 7, and the bottom of the magnetic ring 5 is fixedly mounted in the magnetic ring mounting hole slot of the U-shaped yoke 7.

The working principle of the utility model is as follows:

when the direct current relay works, the coil assembly 6 is electrified to generate a solenoid magnetic field, so that the driving iron block 9 of the motion mechanism 8 is magnetized under the action of the magnetic field, the driving iron block 9 is attracted to the yoke plate at the bottom of the contact system 1, the strength of the magnetic field can be greatly improved by the permanent magnet 2, and along with the approach between the motion mechanism 8 and the yoke plate of the contact system 1, the acting force of the magnetic field can be continuously enhanced until the end, the motion mechanism 8 is attached to the yoke plate of the contact system 1, and the contact plate of the motion mechanism 8 is attached to two contact heads. Under the condition that the size and the number of the coil assemblies 6 are not increased, the permanent magnet 2 not only increases the magnetic field driving force of the ascending motion of the motion mechanism 8, but also can provide continuous magnetic field force maintaining action after a contact plate of the motion mechanism 8 is attached to two contact heads; the utility model discloses can effectively reduce direct current relay and start required consumption, guarantee that direct current relay's 6 low-power consumptions of coil pack can keep at operating condition. After the coil assembly 6 is powered off, the spring 10 drives the moving mechanism 8 to move downwards, and the magnetic field of the permanent magnet 2 enables the moving mechanism 8 to move downwards more smoothly, so that the moving mechanism 8 is prevented from being damaged.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (3)

1. An energy-saving single-coil driven direct-current relay is characterized in that: the magnetic conduction coil comprises a contact system (1), a moving mechanism (8), a metal shell (4), magnetic conduction rings (5), a U-shaped yoke (7) and a coil assembly (6), wherein a yoke plate is arranged on the bottom plane of the contact system (1), the moving mechanism (8) is installed in the middle of the contact system (1) in a penetrating mode, a driving iron block (9) corresponding to the yoke plate of the contact system (1) is fixedly installed at the bottom of the moving mechanism (8), the top of the U-shaped yoke (7) is fixedly connected with the contact system (1), the magnetic conduction rings (5) are installed at the center inside of the U-shaped yoke (7), and the coil assembly (6) arranged inside the U-shaped yoke (7) is installed outside the magnetic conduction rings (5); a metal shell (4) is arranged in the magnetic conductive ring (5), the driving iron block (9) is installed in the metal shell (4) in a lifting sliding fit mode, a permanent magnet (2) and a yoke piece (3) are installed outside the top end of the metal shell (4), and the permanent magnet (2) and the yoke piece (3) are arranged in an up-and-down overlapping mode; the movement mechanism (8) is provided with a step matched with the top of the contact system (1).

2. An energy efficient single coil driven dc relay according to claim 1, wherein: the spring-loaded type touch screen is characterized in that a spring groove is formed in the driving iron block (9), a spring (10) is installed in the spring groove of the driving iron block (9), and the top end of the spring (10) is matched with and supported by the bottom of the contact system (1).

3. An energy efficient single coil driven dc relay according to claim 1, wherein: the cross section of the U-shaped yoke (7) is U-shaped, a magnetic ring mounting hole groove is formed in the center of the bottom of the U-shaped yoke (7), and the bottom of the magnetic conductive ring (5) is fixedly mounted in the magnetic ring mounting hole groove of the U-shaped yoke (7).