CN108022797A - A kind of rotary AC contactor yoke, coil fixing structure - Google Patents

Abstract

The invention belongs to electrical equipment, and in particular to a kind of rotary AC contactor yoke, coil fixing structure, existing such fixed structure is complicated, is not easy to installation safeguards for solving, or by property it is poor, running parameter is unstable the problem of.The structure includes base, U-shaped clamp spring, yoke, shaft, coil, bearing, bolster.Yoke bottom is socketed with shaft, and shaft both ends are socketed on the rubber bumper in two bearing grooves, and yoke is fixed and is supported, and can slightly be rotated around the shaft.Coil is sitting on bearing through yoke center pillar, and upper surface is fixed by the U-shaped card spring pressing buckled at base both ends.The structure has good buffering, damping effect, simple in structure, and dismounting is easy to maintain, firmly installs, stable and reliable in work.

Description

A kind of rotary AC contactor yoke, coil fixing structure

Technical field

The invention belongs to electrical equipment, and in particular to a kind of rotary AC contactor yoke, coil fixing structure.

Background technology

The yoke of rotary AC contactor, coil are required for being fixedly mounted in assembling.Existing rotary type ac contactor Fixed structure of the yoke and coil of device on bottom plate or base mainly has two kinds of forms：One kind is first fixed on bottom plate with bolt Two symmetrical metallic supports；The lower part of yoke piece one circular hole of punching in the middle part of the bottom surface, piece tinertoy is into can form after yoke Cylindrical mounting hole；Punching has upper and lower holes in the middle part of bottom plate, is respectively provided with two spring compressors and compression spring；First will when yoke is fixed Yoke is placed between two stands, and compresses spring, and the cylindrical hole on two stands and yoke, then the both ends by axis are passed through with an axis pin Fixed with split pin, just fix yoke.The fixation of coil is：Yoke center pillar is inserted in, is sitting in the top of the two stands bending shape Into plane on, with four screws through the hole on four angles of coil rack lower plane, be fixed in the plane of stent.It is this solid The advantages of determining structure be：Yoke has buffering because of spring.Shortcoming is：Required precision to the key dimension of two stands is higher, no Tilt phenomenon is just had after then yoke is loaded onto, and in long-term actuation and disconnection, axis can produce larger abrasion, and influence magnetic The parameter of system, its structure are also relative complex.Another fixed structure is one piece of iron plate of welding on yoke bottom surface, then iron plate It is fixed on bottom plate.Although this fixed structure is simple, when assembling, needs dedicated welding equipment, and when welding can cause to install Frame damaged surfaces, while exist and unstable hidden danger is installed, and inconvenience is replaced after damage, and yoke is at work also without slow Punching, coil is directly sleeved in yoke, and when work influences each other, mutually heat transfer.

In conclusion the fixation of the yoke, coil of existing rotary AC contactor magnetic system, or structure is more multiple It is miscellaneous, it is not easy to install and safeguards, or poor reliability, running parameter is unstable.

The content of the invention

To solve the deficiency of above-mentioned technology, present invention offer one kind is simple in structure, firmly installs, is easy to maintain, shock resistance Good, rotary AC contactor yoke stable and reliable in work, coil fixing structure.

Technical solution：

A kind of rotary AC contactor yoke, coil fixing structure, including bend to the sheet base 5 of U-shaped, bend to Bar shaped clamp spring 8, chevron yoke 4, shaft 3, coil 7, bearing 1, the bolster 2 of U-shaped.Yoke 4 is equipped with hole close to the centre of bottom, Shaft 3 is socketed with the hole, which stretches out 4 left and right side of yoke.7 endoporus of coil is socketed in downwards 4 center pillar of yoke On.8 one end of clamp spring is buckled in the hook groove of 5 front top of base, other end clinching in the hook groove at the top of 5 rear end of base, wherein Between downward bent part by elasticity coil 7 is compressed downwards.Bearing 1 is equipped with 2, is fixed on screw 6 on base 5, left and right symmetrical cloth Put, its middle part is equipped with groove 1a.Groove 1a or so is arranged in opposite directions, is respectively socketed with a bolster 2 in groove, its size is big It is small to be adapted with groove 1a.The middle part of bolster 2 position on the lower side is equipped with the circular hole 2a being adapted with 3 diameter of axle of shaft, 3 both ends of shaft point Other noose supports yoke 4 in the circular hole 2a of left and right two bolsters 2.Between having between 4 bottom of yoke and base 5 Gap, can be such that yoke 43 can rotates on a small quantity around the shaft.Bearing 1 can use thermosetting plastics to make, and bolster 2 uses flexible rubber Glue material, when work, can play shock absorbing effect.

In the above-mentioned technical solutions, for hold-down support 1 screw 6 top in circular groove 1c, after screwing on screw 6 Upper surface 1d of its top without departing from bearing 1.7 bottom surface of coil is sitting on bearing 1, the bearing 1 at 7 bottom four corners position of coil Right angle protrusion 1b is equipped with, the medial surface of right angle protrusion is in contact with 7 bottom four corners of coil, does not occur for limiting coil 7 Move horizontally.

Bolster 2 in above-mentioned technical proposal is square or cylindrical, and the groove 1a on corresponding bearing 1 is also phase therewith The same shape adapted to.Bolster 2 is socketed on groove 1a and should be tightly combined, interstitial vibration during reducing work.

Beneficial effect：

Above-mentioned fixed structure is socketed yoke rotation shaft supporting structure by bearing, rubber bumper, has good buffering, subtracts Effect is shaken, and the abrasion of shaft is very small, and yoke can be rotated slightly in shaft, and when being attracted, armature and the pole-face of yoke can Automatic capturing, contact is good, is not likely to produce noise.Coil is sitting on bearing through yoke center pillar, is compressed by elastic circlip solid It is fixed.Coil bottom surface and interior lateral surface are not all contacted with yoke, are avoided and are influenced each other and mutually conduct heat.Plastic seating and rubber at the same time Glue bolster is processed using mould, and dimensional accuracy easily ensures.Whole fixed structure is simple, and dismounting is easy to maintain, firmly installs Reliably, problem present in existing fixed structure is efficiently solved.

Brief description of the drawings

The present invention is further described with reference to the accompanying drawings and detailed description.

Fig. 1 is three-dimensional structure diagram of the present invention.

Fig. 2 is stereochemical structure exploded view of the present invention.

Fig. 3 is 1 three-dimensional structure diagram of bearing.

Fig. 4 is 2 three-dimensional structure diagram of bolster.

Embodiment

As shown in Figures 1 to 4, the present invention includes bending to the sheet base 5 of U-shaped, the bar shaped clamp spring 8 for bending to U-shaped, mountain Shape yoke 4, shaft 3, coil 7, bearing 1, bolster 2.Yoke 4 is equipped with hole close to the centre of bottom, and shaft is socketed with the hole 3, which stretches out 4 left and right side of yoke.7 endoporus of coil is socketed in downwards on 4 center pillar of yoke.8 one end of clamp spring is buckled in In the hook groove of 5 front top of base, in the hook groove at the top of 5 rear end of base, in-between downward bent part will by elasticity for other end clinching Coil 7 compresses downwards.Bearing 1 is equipped with 2, is fixed on screw 6 on base 5, left and right to be arranged symmetrically, its middle part is equipped with recessed Groove 1a.Groove 1a or so is arranged in opposite directions, is respectively socketed with a bolster 2 in groove, its size is adapted with groove 1a. The middle part of bolster 2 position on the lower side is equipped with the circular hole 2a being adapted with 3 diameter of axle of shaft, and noose is distinguished at left and right two in 3 both ends of shaft In the circular hole 2a of bolster 2, yoke 4 is supported.There is gap between 4 bottom of yoke and base 5, yoke 4 around the shaft 3 can be made It can rotate on a small quantity.Bearing 1 can use thermosetting plastics to make, and bolster 2 uses flexible elastomeric material, and when work can play Shock absorbing effect.

In the above-described embodiment, for hold-down support 1 screw 6 top in circular groove 1c, after screwing on screw 6 Upper surface 1d of its top without departing from bearing 1.7 bottom surface of coil is sitting on bearing 1, the bearing 1 at 7 bottom four corners position of coil Right angle protrusion 1b is equipped with, the medial surface of right angle protrusion is in contact with 7 bottom four corners of coil, does not occur for limiting coil 7 Move horizontally.

Bolster 2 in the above embodiment is square or cylindrical, and the groove 1a on corresponding bearing 1 is also phase therewith The same shape adapted to.Bolster 2 is socketed on groove 1a and should be tightly combined, interstitial vibration during reducing work.

Claims (4)

1. a kind of rotary AC contactor yoke, coil fixing structure, including bend to the sheet base (5) of U-shaped, bend to Bar shaped clamp spring (8), chevron yoke (4), shaft (3) and the coil (7) of U-shaped；The yoke (4) is equipped with close to the centre of bottom Hole, is socketed with shaft (3) in the hole, which stretches out yoke (4) left and right side；Coil (7) endoporus is downward It is socketed on yoke (4) center pillar；Described clamp spring (8) one end is buckled in the hook groove of base (5) front top, and other end clinching is the bottom of at In hook groove at the top of seat (5) rear end, in-between downward bent part compresses downwards coil (7) by elasticity；It is characterized in that：Further include use Two left and right bearings (1) being arranged symmetrically that screw (6) is fixed on base (5), and two bearings (1) are socketed in respectively Two bolsters (2) in central slot (1a)；The left and right opposite arrangement of groove (1a) of described two bearings (1)；It is described two Bolster (2) size and the groove (1a) of bearing (1) are adapted, its middle part position on the lower side is equipped with and shaft (3) diameter of axle phase The circular hole (2a) of adaptation；Shaft (3) the both ends difference noose is in the circular hole (2a) of left and right two bolsters (2), by yoke (4) support, and have gap between yoke (4) bottom and base (5), making yoke (4), (3) can rotate on a small quantity around the shaft.

2. a kind of rotary AC contactor yoke according to claim 1, coil fixing structure, it is characterised in that：Institute The top of the screw (6) for hold-down support (1) is stated in the circular groove (1c), screw on screw (6) afterwards its top without departing from branch The upper surface (1d) of seat (1)；Coil (7) bottom surface is sitting on bearing (1), the bearing at coil (7) bottom four corners position (1) right angle protrusion (1b) is equipped with, the medial surface of right angle protrusion (1b) is in contact with coil (7) bottom four corners, for limiting Occurred level does not move coil (7).

3. a kind of rotary AC contactor yoke according to claim 1, coil fixing structure, it is characterised in that：Institute Bolster (2) is stated to be square, the groove (1a) on bearing (1) being accordingly socketed therewith is also square.

4. a kind of rotary AC contactor yoke according to claim 1, coil fixing structure, it is characterised in that：Institute Bolster (2) is stated to be cylindrical, the groove (1a) on bearing (1) being accordingly socketed therewith is also cylinder.