CN112103143A - Energy storage type quick on-off magnetic latching relay - Google Patents

Abstract

The invention discloses an energy storage type fast on-off magnetic latching relay, comprising a base, a wiring assembly, a moving contact assembly, a linkage assembly and a driving assembly mounted on the base, wherein the moving contact assembly is slidably arranged On the base; wherein the moving contact assembly includes a support, a contact bridge plate and a moving contact, the base includes a guide structure disposed thereon, and the support is along the base. The guide structure is in tangential contact with the support member, the present invention drives the linkage rod to move through the drive assembly to achieve super-large stroke; the support member in the movable contact assembly is in linear contact with the base, and friction The force is small, and the magnetic steel is located at the end of the coil skeleton, and the magnetic steel exerts an additional external force on the iron core in the coil drive assembly, which can speed up the contact between the moving contact and the static contact, and shorten the time for the relay to turn on.

Description

An energy storage type fast on-off magnetic latching relay

technical field

The invention relates to the technical field of circuit control, in particular to an energy storage type fast on-off magnetic latching relay.

Background technique

Magnetic latching relay is a new type of relay developed in recent years, and it is also an automatic switch. Like other electromagnetic relays, it can automatically connect and cut off the circuit. The difference is that the magnetic latching relay is a bistable relay that still maintains the state of excitation after the excitation is removed.

The existing magnetic latching relay has a small stroke when in use. In order to achieve a large stroke, the lever principle is used to achieve the purpose of overtravel. Secondly, when the coil is excited, only the magnetic field generated by the coil is used to drive the iron core to move. , can not realize fast turn-on and turn-off, in order to solve the problem of being able to achieve large stroke and fast turn-on at the same time, an energy storage type fast on-off magnetic latching relay is proposed.

SUMMARY OF THE INVENTION

The present invention will solve the above-mentioned technical problems and provide an energy storage type fast on-off magnetic latching relay.

The technical scheme provided by the present invention is as follows:

An energy storage type fast on-off magnetic latching relay, comprising a base and a wiring assembly, a moving contact assembly, a linkage assembly and a driving assembly mounted on the base, the moving contact assembly is slidably arranged on the base. On the seat, the linkage assembly is driven by the drive assembly to drive the movable contact assembly to slide, so that the movable contact assembly contacts or separates from the static contact on the wiring assembly;

Wherein, the moving contact assembly includes a support member, a contact bridge plate and a moving contact, a guide structure is provided on the base, the support member slides along the guide structure on the base, and the The guide structure is in tangential contact with the support;

The magnetic steel in the drive assembly is located close to one end of the coil bobbin.

In this technical solution, by arranging a magnetic steel at one end of the coil skeleton, the magnetic steel has an attractive force on the iron core. Under the action of the coil excitation, the moving iron core will move faster, thereby driving the linkage assembly to drive the moving contact assembly. Rapid movement to achieve rapid contact between the moving contact and the static contact.

Preferably, the linkage assembly includes a linkage rod, a connecting piece and a shaft, the shaft is disposed on the base, the linkage rod is rotatably disposed on the shaft, and the connecting piece is used to connect the moving contact The head assembly is connected to one end of the linkage rod, and the other end of the linkage rod is connected to the drive assembly; wherein, the force arm of the drive assembly to drive the linkage rod is smaller than that of the movable contact assembly to the drive assembly. The moment arm of the linkage rod.

In this technical solution, a lever is formed by rotating the linkage rod on the base, and one end of the linkage rod is driven to move by the drive assembly, and the other end of the linkage rod drives the movable contact assembly to move. In this scheme, the drive assembly The force arm acting on the linkage rod is smaller than the force arm acting on the linkage rod by the moving contact assembly, so as to realize overtravel.

Preferably, the connecting member is a U-shaped link, one end of the U-shaped mouth of the U-shaped link is connected to the linkage rod, and the other end of the U-shaped mouth of the U-shaped link is connected to the support member.

In this technical solution, on the one hand, the U-shaped link is convenient for connecting the linkage rod and the moving contact assembly, and on the other hand, it is convenient for the linkage rod to drive the moving contact assembly.

Preferably, the linkage rod is connected to the iron core of the driving assembly through a push-pull rod.

Preferably, the drive assembly includes a coil bobbin, an electromagnetic coil, a magnetic yoke, a magnetic conductive plate, a magnetic steel, an iron core placed in the coil skeleton, and a magnetic steel bracket for placing the magnetic steel, and the coil is wound around the On the coil bobbin, the magnetic yoke and the magnetic conducting plate are arranged around the circumference of the bobbin to form a surrounding frame, the magnetic steel bracket is arranged on the side wall of one end of the bobbin near the drive assembly, and the The magnet is placed in the magnet holder.

Preferably, it also includes a limit cover, the limit cover is provided with limit holes for restricting the movement of the two static contacts, and the limit cover is provided with a movable hole communicated with the limit holes, And the movable hole is used to limit the movable contact assembly.

In this technical solution, the pressing of the limit cover enables the support member in the movable contact assembly to slide along the movable hole when the driving assembly drives the movable contact assembly to move, and at the same time the movable contact assembly in the movable contact assembly slides along the movable hole. When the head is in contact with the static contact, in order to release the static closing pressure, the shunt reed on the static contact begins to deform. The side wall of the limit hole close to the positioning block is used to limit the maximum deformation of the shunt reed, while the limit hole is far away One side of the positioning block is used to prevent the static contact from rebounding excessively and acts as a limit.

Preferably, the limiting cover is provided with a first fixing hole for positioning and two symmetrical second fixing holes.

In this technical solution, the first fixing hole and the second fixing hole are used to snap and fix the limiting cover.

Preferably, the base is provided with two engaging posts matched with the second fixing holes, and the two engaging posts are axially symmetrical with respect to the guide block.

Preferably, a calibration hole for calibrating the guide block is further opened on the limit cover, and the end of the guide block away from the base is located in the calibration hole.

In this technical solution, a correction hole is designed on the limit cover to prevent the guide block from being skewed when the base is formed by the mold, which will affect the sliding of the support. In order to eliminate this situation, the correction hole is used In order to correct the guide block, limit the guide block to ensure that the guide block is always in a vertical state.

Preferably, a pressing hole for locking the shaft is also opened on the limiting cover.

In this technical solution, the pressing hole and the shaft are gap-fitted, and when the limit cover is closed, the limit cover limits the end of the shaft away from the base, so as to ensure that when the driving component drives the linkage rod to move, the linkage rod will move. There will be no slippage, and it is also conducive to the installation and removal of the linkage rod.

Compared with the prior art, the energy storage type fast on-off magnetic latching relay provided by the present invention has the following beneficial effects:

1. The present invention drives the movement of the linkage rod through the drive assembly, thereby driving the moving contact assembly to move, and drives the large arm with a small force arm to achieve a super large stroke; the support in the moving contact assembly is in linear contact with the base, and friction The force is small, so that when the coil is excited, the moving contact can quickly contact the static contact, and the magnetic steel is located at the end of the coil bobbin, and the magnetic steel exerts an additional external force on the iron core in the coil drive assembly. , so that the contact between the moving contact and the static contact can be accelerated, and the time for the relay to be turned on is shortened.

2. By adding a limit cover in the present invention, on the one hand, the deformation of the casing can be prevented, and the position of the internal structural components changes, which affects the use and has a protective effect; at the same time, the limit cover can also attract and rebound the static contacts. Play a limit to prevent excessive movement of the static contact.

3. The limit cover in the present invention can also correct the guide block to prevent the guide block from being skewed when the mold is reversed. Secondly, the guide block can also limit the shaft to prevent the drive assembly from driving. , the linkage rod is separated from the shaft.

Description of drawings

The preferred embodiments will be described below in a clear and easy-to-understand manner with reference to the accompanying drawings, and further description will be given of the above-mentioned characteristics, technical features, advantages and implementation methods of an energy storage type fast on-off magnetic latching relay.

1 is a schematic structural diagram of an energy storage type fast on-off magnetic latching relay of the present invention;

Fig. 2 is the structural schematic diagram of the limiting cover of the present invention;

Fig. 3 is the structural schematic diagram of the utility model after installing the limit cover;

Figure 4 is a schematic structural diagram of a moving contact assembly;

FIG. 5 is a schematic view of the structure of the base.

Description of reference numbers:

terminal block 100;

Static contact 200;

A moving contact assembly 300, a support 301, a spring 302, a contact bridge 303, and a moving contact 304;

linkage assembly 400, linkage rod 401, connecting piece 402, shaft 403;

Drive assembly 500, coil bobbin 501, coil 502, magnetic yoke 503, magnetic conducting plate 504, push-pull rod 505, magnetic steel 506, magnetic steel bracket 507;

The base 600, the outer frame 601, the partition plate 602, the first installation area 603, the second installation area 604, the guide block 605, the limit part 605-1, the arc part 605-2, the limit ball 605-3, a positioning block 606, a positioning post 606-1, a positioning portion 606-2, a limit slot 606-3, a guide slot 606-4, an engaging slot 607, an engaging post 608, a mounting hole 609, and a third mounting area 610;

Limiting cover 700 , limiting hole 701 , movable hole 702 , calibration hole 703 , first fixing hole 704 , second fixing hole 705 , pressing hole 706 .

Detailed ways

In order to more clearly describe the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative efforts, and obtain other implementations.

For the sake of brevity of the drawings, only the parts relevant to the invention are schematically shown in each drawing, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is marked. As used herein, "one" not only means "only one", but also "more than one".

According to an embodiment provided by the present invention, as shown in FIG. 1 , an energy storage type fast on-off magnetic latching relay includes a base 600 , a wiring assembly mounted on the base 600 , a moving contact assembly 300 , and a linkage The assembly 400 and the drive assembly 500, the movable contact assembly 300 is slidably arranged on the base 600, and the linkage assembly 400 is driven by the drive assembly 500 to drive the movable contact assembly 300 to slide, so as to achieve the static contact between the movable contact assembly 300 and the wiring assembly In the specific implementation, the wiring assembly is formed by installing the static contact 200 on the wiring board 100, wherein the movable contact assembly 300 includes a support member 301, a contact bridge plate 303 and a movable contact 304. The seat 600 is provided with a guide structure, the support member 301 slides along the guide structure on the base 600, and the guide structure is in tangential contact with the support member 601. In the specific implementation, the guide structure is the guide block 605, and includes the base The guide groove 606-4 opened on the base 600, the support member 301 slides along the guide block 605 and the guide groove 606-4 on the base 600, and the guide block 605 is in tangential contact with the support member 301; The position of the steel 506 is close to one end of the coil bobbin 501. In the specific implementation, the guide structure can be directly provided with a sliding groove on the base 600. The support is provided with a protrusion, and the protrusion slides in the sliding groove (not shown) , and will not be described too much in this embodiment.

As shown in FIG. 5 , in the specific implementation, a guide block 605 and a positioning block 606 are provided on the base 600, wherein the positioning block 606 is installed in the outer frame 601, and the outer frame 601 is provided with two engaging grooves for To install the wiring board 100 in the wiring assembly, the positioning block 606 is provided with a vertical limit groove 606-3 and a horizontal guide groove 606-4 on the positioning column 606-1, and the vertical limit groove 606-3 is used for In order to prevent the support 301 from sliding, that is, the maximum stroke of the relay, and the inner wall of the limit slot 606-3 is an arc structure, the shape of the limit slot 606-3 and the sliding block 301-6 match each other; The guide groove 606-4 opened on the 606 is used for the sliding of the sliding block 301-6, which directly guides and limits the sliding block 301-6, so as to achieve the indirect limit for the support 301. The installation on the base 600 The upper end of the hole 609 is used for fixing the positioning post 606-1 of the outer cover of the relay as the positioning part 606-2, which matches with the first fixing hole 704 described below;

The guide block 605 is provided with two symmetrical arc parts 605-2 and a limit ball 605-3. The limit ball 605-3 is located at the end of the guide block 605 away from the limit groove 606-3, and the two arcs When the shaped portion 605-2 is close to one end of the positioning block 606, the two arc-shaped portions 605-2 form a side wall of an arc surface, and the arc-shaped portion 605-2 is tangent to the inner wall of the support member 301 to ensure tangential contact, which is relatively The inner side wall of the limiting ball 605-3 is in tangential contact due to the small friction force during sliding; there is a certain distance between the arc-shaped part 605-2 and the limiting ball 605-3 to achieve better limiting effect, and at the same time the guide block There is also a limiting portion 605-1 on the 605, which matches with the calibration hole 703 described below.

As shown in FIG. 4 , the movable contact assembly 300 is mounted on the support member 301 with the contact bridge plate 303 , and the contact bridge plate 303 slides on the support member 301 in parallel with the hole in the inner bottom wall of the base. A guide block 605 on the base 600 is inserted into the hole perpendicular to the inner bottom wall of the base, and the outer wall of the guide block 605 is tangent to the longitudinal hole on the support. Contact, the other side of the contact bridge plate is connected to the support 301 through two springs 302. When the support 301 moves to the movable contact 304 and the stationary contact 204, at this time, driven by the drive assembly 500, the linkage rod 401 will continue to drive the support member 301 to move. At this time, the contact bridge plate 303 and the support member 301 slide relative to each other, and the spring 302 is compressed to achieve the effect of energy storage.

The base 600 divides the inner space of the outer frame 601 into two parallel first installation areas 603 and second installation areas 604 through the partition plate 602 , and a lateral second installation area perpendicular to the first installation area and the second installation area 604 . There are three installation areas 610 , the first installation area 603 is used to install the drive assembly 500 , the second installation area 604 is used to install the wiring assembly and the movable contact assembly 300 , and the third installation area 610 is used to install the linkage assembly 400 .

Referring again to FIG. 1 , in another embodiment of the present invention, the linkage assembly 400 includes a linkage rod 401 , a connecting piece 402 and a shaft 403 . The frame 601 is integrally formed, the linkage rod 401 is rotatably disposed on the shaft 403 , the connecting piece 402 connects the movable contact assembly 300 and one end of the linkage rod 401 , and the other end of the linkage rod 401 is connected to the drive assembly 500 . In a specific implementation, the connecting member 402 is a U-shaped link, one end of the U-shaped port of the U-shaped link is connected to the linkage rod 401 , and the other end of the U-shaped port of the U-shaped link is connected to the support member 301 . The other end of the linkage rod 401 is connected to the iron core of the drive assembly 500 through the push-pull rod 505 , wherein the force arm of the linkage rod 401 in the linkage assembly 400 subjected to the force of the drive assembly 500 is smaller than the force of the moving contact assembly 300 to the linkage rod 401 . Action arm for extra large travel.

Referring to FIG. 1 again, in another embodiment of the present invention, the drive assembly 500 includes a coil bobbin 501, a coil 502, a magnetic yoke 503, a magnetic conducting plate 504, a magnetic steel 506, an iron core placed in the bobbin, and The magnetic steel support 507 for placing the magnetic steel 506; the coil 502 is wound on the coil bobbin 501, and the magnetic yoke 503 and the magnetic conducting plate 504 are arranged around the coil bobbin 501 to form a surrounding frame.

As shown in FIG. 2 , in another embodiment of the present invention, a limit cover 700 is further included. Limit holes 701 for limiting the movement of the two static contacts 200 are opened on the limit cover 700 . The limit cover 700 There is a movable hole 702 communicated with the limiting hole 701 , and the movable hole 702 is used for limiting the movable contact assembly 300 .

Specifically, the limiting cover 700 is provided with a first fixing hole 704 for positioning and two symmetrical second fixing holes 705 to facilitate fixing the limiting cover 700 on the base 600; the base 600 is provided with two There are two engaging posts 608 matched with the second fixing holes 705 , and the two engaging posts 608 are symmetrical about the axis 403 with respect to the guide block 605 .

As shown in FIG. 2 and FIG. 3 , a calibration hole 703 for calibrating the guide block 605 is also opened on the limit cover 700, and the end of the guide block 605 away from the base 600 is located in the calibration hole 703 for calibrating the guide block 605, The guide block 605 is prevented from being inclined outwardly when the mold is reversed, so that the correction hole 703 can play a good role in correction. The limiting cover 700 is also provided with a pressing hole 706 for locking the shaft 403 to prevent the linkage rod 401 from being separated from the shaft 403 when the linkage rod 401 moves.

Based on the above embodiment, in actual use, when the coil 502 in the drive assembly 500 is excited, the iron core in the coil bobbin 501 starts to slide, and the magnetic steel 506 also generates suction to the iron core, so that When the iron core slides, it will be faster. When the iron core moves rapidly, one end of the linkage rod 401 in the linkage assembly 400 is driven to move, so as to drive the support 301 of the movable contact assembly 300 to slide. The bases 600 slide between the bases 600 and the support 301 is in linear contact with the guide block 605 on the base 600 to reduce friction, so that the movable contact 304 in the movable contact assembly 300 can quickly connect with the static contact in the wiring assembly When the static contact 200 is in contact with the moving contact 304, the static contact 200 and the moving contact 304 move together. At this time, the spring 302 begins to compress until the two are stationary, and the spring 302 compresses to realize the storage. to ensure that the moving contact 304 and the static contact on the static contact 200 are always in contact, so as to prevent the moving contact 304 and the static contact on the static contact 200 from being lost without contact, and the spring 302 can also ensure that the two are in contact with each other. Quick disconnect without coil 502 energization.

It should be noted that the above embodiments can be freely combined as required. The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a quick break-make magnetic latching relay of energy storage type which characterized in that: the movable contact component is arranged on the base in a sliding mode, and the driving component drives the linkage component to drive the movable contact component to slide so as to enable the movable contact component to be in contact with or separated from a fixed contact on the wiring component;

the movable contact assembly comprises a supporting piece, a contact bridge plate and a movable contact, wherein a guide structure is arranged on the base, the supporting piece slides along the guide structure on the base, and the guide structure is in tangential contact with the supporting piece;

and the magnetic steel in the driving assembly is close to one end of the coil framework.

2. The energy storage type rapid on-off magnetic latching relay according to claim 1, characterized in that: the linkage assembly comprises a linkage rod, a connecting piece and a shaft, the shaft is arranged on the base, the linkage rod is rotatably arranged on the shaft, the connecting piece is used for connecting the moving contact assembly with one end of the linkage rod, and the other end of the linkage rod is connected to the driving assembly;

the acting force arm of the driving component for driving the linkage rod is smaller than that of the moving contact component for the linkage rod.

3. The energy storage type rapid on-off magnetic latching relay according to claim 2, characterized in that: the connecting piece is a U-shaped link rod, one end of a U-shaped opening of the U-shaped link rod is connected to the linkage rod, and the other end of the U-shaped opening of the U-shaped link rod is connected to the supporting piece.

4. The energy storage type rapid on-off magnetic latching relay according to claim 2, characterized in that: the linkage rod is connected to the iron core of the driving assembly through a push-pull rod.

5. The energy storage type rapid on-off magnetic latching relay according to claim 1, characterized in that: drive assembly includes coil skeleton, solenoid, yoke, magnetic conductive plate, magnet steel, lays the iron core in coil skeleton and is used for laying the magnet steel support of magnet steel the coil is around establishing on the coil skeleton, the yoke with the magnetic conductive plate encloses to be established coil skeleton week side forms encloses the frame, the magnet steel support sets up on the one end lateral wall that is close to drive assembly on the coil skeleton, just the magnet steel is placed in the magnet steel support.

6. The energy storage type rapid on-off magnetic latching relay according to claim 1, characterized in that: the movable contact assembly is characterized by further comprising a limiting cover, wherein a limiting hole used for limiting the movement of the two fixed contacts is formed in the limiting cover, a movable hole communicated with the limiting hole is formed in the limiting cover, and the movable hole is used for limiting the movable contact assembly.

7. The energy storage type rapid on-off magnetic latching relay according to claim 6, characterized in that: the limiting cover is provided with a first fixing hole for positioning and two symmetrical second fixing holes.

8. The energy storage type rapid on-off magnetic latching relay according to claim 7, characterized in that: two clamping columns matched with the second fixing holes are arranged on the base, and the two clamping columns are axially symmetrical relative to the guide block.

9. The energy storage type rapid on-off magnetic latching relay according to claim 1, characterized in that: the limiting cover is further provided with a correcting hole for correcting the guide block, and one end, far away from the base, of the guide block is located in the correcting hole.

10. The energy storage type rapid on-off magnetic latching relay according to claim 1, characterized in that: the limiting cover is also provided with a pressing hole for locking the shaft.

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