CN214588482U - Contact seat device of control and protection switch - Google Patents

Abstract

The utility model discloses a control and protection switch's contact seat device relates to low-voltage electrical technology field, including the explosion chamber, gas outlet and base, the equidistant contact spring of installing in the intermediate position department of the inside bottom of base, and the top of contact spring transversely installs the bridge type movable contact plate, the both sides on bridge type movable contact plate top are provided with the movable contact, quiet touch panel is installed on the inside top of base of contact spring both sides, and one side of quiet touch panel bottom installs the stationary contact, the explosion chamber has been seted up to the inside equidistant of base of contact spring both sides, and the internally mounted of explosion chamber has the arc extinguishing bars piece, the explosion chamber internally mounted of arc extinguishing bars piece one side has the metal separation board, and one side equidistant mounting groove of explosion chamber top has been seted up. The utility model discloses a set up friction groove, friction lever and flexible pad, produce vibrations when avoiding the closure and break away from to lead to electric arc to produce and ablate stationary contact and movable contact, prolong its life, reduce the maintenance cost.

Description

Contact seat device of control and protection switch

Technical Field

The utility model relates to a low voltage electrical technology field specifically is control and protection switch's contact seat device.

Background

The contact is one of key parts of the switch electrical appliance, and the contact seat is usually arranged in the existing switch electrical appliance in the market for arranging the corresponding contact, the quality of the material of the contact seat determines the service life and the quality of the switch electrical appliance to a great extent, but the contact seat device of the existing control and protection switch still has certain defects.

Through the retrieval, chinese patent grant publication No. CN204230072U, announcement date 2015, 03.25 discloses a contact device for controlling and protecting a switching device, and it is proposed that "the movable bridge contact includes a contact support, a bridge contact and a contact spring abutting against the bridge contact, the middle part of the bridge contact in the length direction is inserted into a radial groove formed on the contact support, and two ends of the bridge contact are respectively provided with a movable contact for cooperating with a stationary contact on a stationary contact component, which is characterized in that: the movable bridge-shaped contact also comprises a cylindrical spring housing, the spring housing is covered on the upper part of the height direction of the contact spring, the utility model effectively prevents the electric arc from ablating the end part of the contact spring, but in the opening and closing process, the reaction force generated by the contact of the moving contact and the static contact can always generate vibration, and further the service life of the contact is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a control and protection switch's contact seat device to solve the lower problem of contact life who proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the contact seat device of the control and protection switch comprises an arc extinguish chamber, an air outlet and a base, and also comprises a protection structure for avoiding water vapor from entering to cause electric leakage, a dustproof structure for avoiding dust blockage and a friction structure for avoiding electric arc generation caused by opening, closing and vibration;

the middle position of the bottom end in the base is provided with contact springs at equal intervals, the top ends of the contact springs are transversely provided with a bridge type movable contact plate, two sides of the top end of the bridge type movable contact plate are provided with movable contacts, and the friction structures are arranged on two sides of the top end of the bridge type movable contact plate;

the top end of the interior of the base at two sides of the contact spring is provided with a static contact plate, one side of the bottom end of the static contact plate is provided with a static contact, the interior of the base at two sides of the contact spring is provided with arc extinguishing chambers at equal intervals, arc extinguishing grid pieces are arranged in the arc extinguishing chambers, metal isolation plates are arranged in the arc extinguishing chambers at one sides of the arc extinguishing grid pieces, mounting grooves are formed in one sides of the top ends of the arc extinguishing chambers at equal intervals, and the protection structure is arranged in the mounting grooves;

the gas outlet has been seted up to the lower extreme of base both sides equidistant, and the gas outlet is close to one side of metal division board and transversely installs horizontal baffle, dustproof construction sets up the inside one side of keeping away from horizontal baffle in the gas outlet.

Preferably, the friction structure includes the fixed block, the spout has been seted up to the intermediate position department of the inside upper end of fixed block, and the inside sliding connection of spout has the slider that extends to the fixed block outside, the flexible pad is installed on the fixed block top on slider surface, and the vertical friction lever of installing in top of slider, the inside bottom of stationary contact plate on one side of the arc extinguishing bars piece has been seted up with friction lever matched with friction groove.

Preferably, protective structure includes slot case, locating hole, dry piece, closing plate and locking bolt, the closing plate sets up in the inside upper end of mounting groove, and the both sides on closing plate top rotate and be connected with locking bolt, the locating hole with locking bolt matched with is seted up on the inside top of base of closing plate both sides, and the mounting groove internally mounted of closing plate bottom has the slot case, the inside sliding connection of slot case has the dry piece.

Preferably, the sealing plate is T-shaped, and the area of the cross section of the bottom end of the sealing plate is equal to the area of the cross section of the lower end in the mounting groove.

Preferably, dustproof construction includes dust screen, damping bull stick, fixed magnet, thrust plate and fixed iron plate, the thrust plate is installed in one side of the inside top of gas outlet and bottom, and the inside dust screen that is provided with of gas outlet of thrust plate one side, fixed iron plate is installed at the both ends of dust screen one side top and bottom, and the base both sides lower extreme of fixed iron plate one end rotates and is connected with the damping bull stick, fixed magnet is installed to the one end of damping bull stick one side.

Preferably, the damping rotating rods are C-shaped and are symmetrically distributed around the transverse central axis of the air outlet.

Preferably, the slider is convex in shape, and a welding integrated structure is formed between the top end of the slider and the bottom end of the friction rod.

Compared with the prior art, the utility model provides a control and protection switch's contact seat device has following beneficial effect:

1. the utility model provides a have friction groove, friction lever and flexible pad, utilize the elastic deformation of flexible pad, the impact force of stationary contact and movable contact point contact when absorbing some closures, and utilize the frictional force of block between friction groove and the friction lever, make stationary contact and movable contact point contact more closely, avoid recoil force to make movable contact can with the stationary contact laminating again after separating, improve the compactness and the stability of stationary contact and movable contact laminating when closing, avoid producing vibrations when closing and break away from and lead to electric arc to produce and ablate stationary contact and movable contact, prolong its life, reduce the maintenance cost, thereby the problem that contact life is lower has been solved;

2. the utility model provides a protective structure, utilize dry piece to adsorb the moisture of a small amount of insides of explosion chamber, avoid the moisture to influence electric leakage phenomenon or produce great electric arc, and then reduce because of the electric accident of moisture because of it, improve the security and the life of this device use, simultaneously accessible pulling closing plate drives the hole cell box and breaks away from inside the mounting groove completely, later slide dry piece take out and change it, guarantee to the dry effect of explosion chamber inside, avoid dry piece to use excessively to lead to dry adsorptivity to reduce, thereby solved the problem of avoiding electric leakage;

3. the utility model provides a dustproof construction, it is inside to utilize the dust screen to avoid outside dust to pass through gas outlet entering explosion chamber, and then avoid the dust to influence the normal work of this device, realize the dustproof effect of device, improve device safety in utilization, reduce the adverse effect that the dust caused device work, simultaneously rotatable damping bull stick, make fixed magnet break away from completely with fixed iron plate, later take out the dust screen and wash, avoid it to be blockked up by the dust, and then reduce the ventilation effect, thereby the problem of the easy ash of advancing of gas outlet has been solved.

Drawings

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic view of the partial cross-sectional structure of the present invention when closed;

FIG. 4 is a schematic view of a three-dimensional structure of the hole box of the present invention;

fig. 5 is a schematic structural view of the protective structure of the present invention;

fig. 6 is a schematic structural diagram of the dustproof structure of the present invention.

In the figure: 1. a protective structure; 101. a hole and groove box; 102. positioning holes; 103. drying the blocks; 104. a sealing plate; 105. a locking bolt; 2. arc extinguishing grid pieces; 3. a stationary contact; 4. a stationary contact plate; 5. mounting grooves; 6. an arc extinguishing chamber; 7. a dust-proof structure; 701. a dust screen; 702. a damping rotating rod; 703. a fixed magnet; 704. a thrust plate; 705. fixing the iron blocks; 8. an air outlet; 9. a base; 10. a bridge type movable touch plate; 11. a contact spring; 12. a movable contact; 13. a metal separator plate; 14. a transverse partition; 15. a friction groove; 16. a friction lever; 17. a flexible pad; 18. a slider; 19. a chute; 20. and (5) fixing blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-6, the contact base device of the control and protection switch includes an arc extinguish chamber 6, an air outlet 8 and a base 9, and further includes a protection structure 1 for preventing water vapor from entering to cause electric leakage, a dust-proof structure 7 for preventing dust from blocking, and a friction structure for preventing electric arc from generating due to opening and closing vibration;

the middle position of the bottom end in the base 9 is provided with contact springs 11 at equal intervals, the top ends of the contact springs 11 are transversely provided with a bridge type movable contact plate 10, two sides of the top end of the bridge type movable contact plate 10 are provided with movable contacts 12, and the friction structures are arranged on two sides of the top end of the bridge type movable contact plate 10;

the top ends of the insides of the bases 9 at two sides of the contact spring 11 are provided with the static contact plates 4, one sides of the bottom ends of the static contact plates 4 are provided with the static contacts 3, the insides of the bases 9 at two sides of the contact spring 11 are provided with arc extinguish chambers 6 at equal intervals, arc extinguish grids 2 are arranged inside the arc extinguish chambers 6 at one sides of the arc extinguish grids 2, metal isolation plates 13 are arranged inside the arc extinguish chambers 6 at one sides of the arc extinguish chambers 6 at equal intervals, mounting grooves 5 are formed at one sides of the top ends of the arc extinguish chambers 6, and the protection structures 1 are arranged inside the mounting grooves 5;

the lower ends of two sides of the base 9 are provided with air outlets 8 at equal intervals, one side of each air outlet 8 close to the metal partition plate 13 is transversely provided with a transverse partition plate 14, and the dustproof structure 7 is arranged on one side, far away from the transverse partition plate 14, in the air outlet 8;

referring to fig. 1-6, the contact block device of the control and protection switch further includes a friction structure, the friction structure includes a fixed block 20, a sliding groove 19 is formed in the middle position of the upper end inside the fixed block 20, a sliding block 18 extending to the outside of the fixed block 20 is connected inside the sliding groove 19 in a sliding manner, a flexible pad 17 is mounted at the top end of the fixed block 20 on the surface of the sliding block 18, a friction rod 16 is vertically mounted at the top end of the sliding block 18, and a friction groove 15 matched with the friction rod 16 is formed at the bottom end inside the stationary contact plate 4 on one side of the arc extinguishing grid piece 2;

the slide block 18 is in a convex shape, and the top end of the slide block 18 and the bottom end of the friction rod 16 are in a welding integrated structure;

specifically, as shown in fig. 1 and 3, in the closing process, the friction rod 16 is clamped into the friction groove 15 along with the movement of the bridge-type moving contact plate 10, and the friction rod 16 moves relatively to drive the slider 18 to move until the bottom end of the friction rod 16 compresses the flexible pad 17, and the elastic deformation of the flexible pad 17 is utilized to absorb a part of the impact force of the contact between the fixed contact 3 and the moving contact 12, and the frictional force of the engagement between the friction groove 15 and the friction rod 16 is utilized to make the contact between the fixed contact 3 and the moving contact 12 tighter, so that the moving contact 12 is prevented from being attached to the fixed contact 3 after being separated from the fixed contact by the recoil force, and further, the generation of vibration and detachment during closing is avoided, so that the static contact 3 and the moving contact 12 are ablated by an electric arc, and the service life of the electric arc is prolonged.

Example 2: the protective structure 1 comprises a hole groove box 101, a positioning hole 102, a drying block 103, a sealing plate 104 and a locking bolt 105, wherein the sealing plate 104 is arranged at the upper end inside the mounting groove 5, the locking bolt 105 is rotatably connected to two sides of the top end of the sealing plate 104, the positioning hole 102 matched with the locking bolt 105 is formed in the top end inside a base 9 on two sides of the sealing plate 104, the hole groove box 101 is mounted inside the mounting groove 5 at the bottom end of the sealing plate 104, and the drying block 103 is slidably connected inside the hole groove box 101;

the sealing plate 104 is T-shaped, and the area of the cross section of the bottom end of the sealing plate 104 is equal to the area of the cross section of the lower end in the mounting groove 5;

specifically, as shown in fig. 1, 4 and 5, adsorb the inside a small amount of moisture of explosion chamber 6 through dry piece 103, avoid the moisture to influence electric leakage phenomenon or produce great electric arc, improve the security and the life that this device used, accessible pulling closing plate 104 drives inside the orifice groove case 101 breaks away from mounting groove 5 completely simultaneously, later slide dry piece 103 takes out and changes it, guarantee to the inside drying effect of explosion chamber 6, avoid dry piece 103 to use excessively to lead to dry adsorptivity to reduce.

Example 3: the dustproof structure 7 comprises a dustproof net 701, a damping rotating rod 702, a fixed magnet 703, a thrust plate 704 and a fixed iron block 705, wherein the thrust plate 704 is installed at one side of the top end and the bottom end inside an air outlet 8, the dustproof net 701 is arranged inside the air outlet 8 at one side of the thrust plate 704, the fixed iron blocks 705 are installed at two ends of the top end and the bottom end at one side of the dustproof net 701, the damping rotating rod 702 is rotatably connected to the lower ends of two sides of a base 9 at one end of the fixed iron block 705, and the fixed magnet 703 is installed at one end of one side of the damping rotating rod 702;

the damping rotating rods 702 are C-shaped, and the damping rotating rods 702 are symmetrically distributed about the transverse central axis of the air outlet 8;

specifically, as shown in fig. 1, 2 and 6, through setting up dust screen 701, it is avoided that outside dust passes through gas outlet 8 and gets into inside explosion chamber 6, and then avoids dust to influence the normal work of this device, rotatable damping bull stick 702 simultaneously for fixed magnet 703 breaks away from with fixed iron plate 705 completely, later takes out and washs dust screen 701 from gas outlet 8 is inside, avoids it to be blockked up by the dust, and then reduces the ventilation effect.

The working principle is as follows: when the device is used, firstly, the base 9 is installed and fixed, when the bridge type movable contact plate 10 moves upwards to stretch the contact spring 11 under the action of external force, the fixed contact 3 and the movable contact 12 are in complete contact, the closing of a main loop can be realized, and when the external force is removed, the fixed contact 3 and the movable contact 12 are completely separated under the action of the elastic force of the contact spring 11, and the opening of the main loop is realized;

the first innovation point implementation step:

the first step is as follows: in the closing process, the friction rod 16 is clamped into the friction groove 15 along with the movement of the bridge movable contact plate 10, and the friction rod 16 moves relatively to drive the sliding block 18 to slide in the sliding groove 19 until the bottom end of the friction rod 16 compresses the flexible pad 17;

the second step is that: the elastic deformation of the flexible pad 17 is utilized to absorb a part of the impact force of the contact between the fixed contact 3 and the movable contact 12;

the third step: and the frictional force of the clamping between the friction groove 15 and the friction rod 16 is utilized to enable the contact between the fixed contact 3 and the movable contact 12 to be more tight, so that the movable contact 12 is prevented from being attached to the fixed contact 3 after being separated from the fixed contact by the recoil force, and further, the movable contact 12 is prevented from being separated from the fixed contact by vibration during closing, and the fixed contact 3 and the movable contact 12 are prevented from being ablated by electric arc.

The static contact 3, the metal isolation plate 13 and the transverse partition plate 14 are arranged to further eliminate electric arcs generated when the static contact 3 and the movable contact 12 are closed and separated, so that the use safety is improved;

the implementation step of the second innovation point:

the first step is as follows: a small amount of moisture in the arc extinguish chamber 6 is absorbed by arranging the drying block 103, so that the phenomenon of electric leakage caused by the moisture is avoided;

the second step is that: meanwhile, the locking bolt 105 can be periodically rotated to be completely separated from the positioning hole 102, and then the sealing plate 104 is pulled upwards to drive the orifice box 101 to be completely separated from the inside of the mounting groove 5;

the third step: then the drying block 103 is slid to be taken out and replaced, and the drying effect on the inner part of the arc extinguish chamber 6 is ensured.

The third innovation point implementation step:

the first step is as follows: the dust screen 701 prevents external dust from entering the arc extinguish chamber 6 through the air outlet 8, so that the dust is prevented from influencing the normal work of the device;

the second step is that: meanwhile, the damping rotating rod 702 can be rotated to completely separate the fixed magnet 703 from the fixed iron block 705, and then the dust screen 701 is taken out from the air outlet 8 and cleaned to avoid being blocked by dust, so that the ventilation effect is reduced;

the third step: and during installation, the thrust plate 704 is utilized to prevent the dust screen 701 from sliding excessively and ensure the installation stability.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. Control and protection switch's contact seat device, including explosion chamber (6), gas outlet (8) and base (9), its characterized in that: the electric arc welding device also comprises a protective structure (1) for preventing water vapor from entering to cause electric leakage, a dustproof structure (7) for preventing dust from blocking and a friction structure for preventing electric arc from generating due to opening, closing and vibration;

the middle position of the bottom end in the base (9) is provided with contact springs (11) at equal intervals, the top ends of the contact springs (11) are transversely provided with a bridge type movable contact plate (10), two sides of the top end of the bridge type movable contact plate (10) are provided with movable contacts (12), and friction structures are arranged on two sides of the top end of the bridge type movable contact plate (10);

the protection structure comprises a contact spring (11), wherein a static contact plate (4) is installed at the top end of the inner portion of a base (9) on two sides of the contact spring (11), a static contact (3) is installed on one side of the bottom end of the static contact plate (4), arc extinguishing chambers (6) are arranged in the base (9) on two sides of the contact spring (11) at equal intervals, arc extinguishing grids (2) are installed in the arc extinguishing chambers (6), metal isolation plates (13) are installed in the arc extinguishing chambers (6) on one side of the arc extinguishing grids (2), mounting grooves (5) are formed in one side of the top end of the arc extinguishing chambers (6) at equal intervals, and the protection structure (1) is arranged in the mounting grooves (5);

gas outlet (8) have been seted up to the lower extreme of base (9) both sides equidistant, and gas outlet (8) are close to one side transverse partition board (14) of transversely installing of metal division board (13), dustproof construction (7) set up in gas outlet (8) inside one side of keeping away from transverse partition board (14).

2. The contact block arrangement of a control and protection switch of claim 1, wherein: friction structure includes fixed block (20), spout (19) have been seted up to the intermediate position department of the inside upper end of fixed block (20), and spout (19) inside sliding connection has and extends to fixed block (20) outside slider (18), flexible pad (17) are installed on fixed block (20) top on slider (18) surface, and the vertical friction disc (16) of installing in top of slider (18), static touch panel (4) inside bottom on one side of arc extinguishing bars piece (2) has seted up with friction disc (16) matched with friction groove (15).

3. The contact block arrangement of a control and protection switch of claim 1, wherein: protective structure (1) includes hole groove case (101), locating hole (102), dry piece (103), closing plate (104) and locking bolt (105), closing plate (104) set up in the inside upper end of mounting groove (5), and the both sides rotation on closing plate (104) top is connected with locking bolt (105), base (9) the inside top of closing plate (104) both sides seted up with locking bolt (105) matched with locating hole (102), and mounting groove (5) internally mounted hole groove case (101) of closing plate (104) bottom, the inside sliding connection of hole groove case (101) has dry piece (103).

4. The contact block arrangement of a control and protection switch of claim 3, wherein: the sealing plate (104) is T-shaped, and the area of the cross section of the bottom end of the sealing plate (104) is equal to the area of the cross section of the lower end in the mounting groove (5).

5. The contact block arrangement of a control and protection switch of claim 1, wherein: dustproof construction (7) include dust screen (701), damping bull stick (702), fixed magnet (703), thrust plate (704) and fixed iron plate (705), one side at inside top of gas outlet (8) and bottom is installed in thrust plate (704), and inside dust screen (701) that is provided with in gas outlet (8) of thrust plate (704) one side, fixed iron plate (705) are installed at the both ends of dust screen (701) one side top and bottom, and base (9) both sides lower extreme of fixed iron plate (705) one end rotates and is connected with damping bull stick (702), fixed magnet (703) are installed to the one end of damping bull stick (702) one side.

6. The contact block arrangement of a control and protection switch of claim 5, wherein: the damping rotating rods (702) are C-shaped, and the damping rotating rods (702) are symmetrically distributed around the transverse central axis of the air outlet (8).

7. The contact block arrangement of a control and protection switch of claim 2, wherein: the slider (18) is convex, and the top end of the slider (18) and the bottom end of the friction rod (16) are of a welding integrated structure.

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