CN102619630A

CN102619630A - Stepping motor type idle speed control valve

Info

Publication number: CN102619630A
Application number: CN2012100923012A
Authority: CN
Inventors: 李友丹
Original assignee: CHANGZHOU MEITE PRECISION MOTOR Co Ltd
Current assignee: CHANGZHOU MEITE PRECISION MOTOR Co Ltd
Priority date: 2012-03-30
Filing date: 2012-03-30
Publication date: 2012-08-01

Abstract

The invention relates to a stepping motor type idle speed control valve. The valve comprises an engine base shell, a wiring base and a machine shell, wherein the front end and the rear end of the machine shell are respectively provided with a guide frame and a bearing bracket; the guide frame passes through a hole; the bearing bracket is embedded on the wiring base; a magnetic steel component is arranged on the bearing bracket and comprises a rotation core, a magnetic steel, a core shaft, a bearing and a fixing ring; the magnetic steel wraps on the outer surface of the rotation core; the core shaft penetrates through the rotation core; the bearing is sleeved on the end part of the rotation core; the fixing ring is used for preventing the bearing from axially sliding; the bearing is clamped on the inner wall of the bearing bracket; the end part of the core shaft is connected with an adjusting screw rod; the adjusting screw rod penetrates through the guide frame and abuts against the inner wall of a conical head; and a convex point matched with an L-shaped groove is arranged on the end part of the rotation core sleeved with the bearing and is embedded in the L-shaped groove of the fixing ring. The stepping motor type idle speed control valve adopts the magnetic steel component, so the slippage of the bearing and the ageing of the rotation core can be avoided; and due to the connection in the way of a circuit board, pseudo soldering between a coil and a pin can be avoided.

Description

A kind of step motor type IAC

Technical field

The present invention relates to the field of IAC, especially a kind of step motor type IAC.

Background technique

The step motor type IAC is to use maximum a kind of idle speed controllers in the world at present.The aperture that is used for automobile electronic fuel oil jet system bypath air passage, thus bypass tolerance regulated, make the transmitter rotating speed reach desired desired value; The rotor that its structure mainly is made up of permanent magnetism; The stator that field coil constitutes and convert straight-line feed screw and valve etc. to rotatablely moving and partly forms, it utilizes the stairstep signal of system's supply to carry out conversion and control, and rotor can just be changeed; Also can reverse; Thereby spool (leading screw) carries out fore and aft motion reaching the purpose of regulating cross section, bypath air road, thus stable idle, and reach desirable idling speed.

The commentaries on classics core that uses in the IAC that uses is at present gone out in order to prevent the bearing axial slip with after bearing combines, need on the end edge of commentaries on classics core, utilize electric welding iron to heat the edge; Make its edge spreading form a beading, such mode causes easily changes the aging of core, thereby causes changeing in the core process; The slippage of bearing, influence is used, and what between the support shell of the IAC that uses and wiring base, all adopt is plug in construction; Its poor sealing, in addition, the coil in the IAC of some use and the Placement of pin are direct welding; Because coil is that copper wire is processed, when connecting four pins four terminations, need be with carrying out insulation processing between the copper wire; If deal with the phenomenon that causes coil short and rosin joint easily improperly, its this problem is difficult to solve.

Summary of the invention

The technical problem that the present invention will solve is: in order to overcome the above-mentioned middle problem that exists, a kind of step motor type IAC is provided, its project organization is reasonable, using effect good and good airproof performance.

The technical solution adopted for the present invention to solve the technical problems is: a kind of step motor type IAC; Comprise support shell and the wiring base that matches with the support shell and be arranged on the casing between support shell and the wiring base, offer through hole on the described support shell, the front-end and back-end of described casing are respectively arranged with the leading truck that passes through hole and are embedded in the bearing bracket on the wiring base; The leading truck outer installment has sheath; The other end of sheath is connected with conehead, is provided with spring between conehead and the sheath, in the described casing pole plate is installed; Be equipped with first coil rack and second coil rack on the pole plate respectively; All be wound with coil on first coil rack and second coil rack, pin is installed on the wiring base, coil is connected with pin; Described bearing bracket is provided with the magnet steel assembly; Described magnet steel assembly comprises changes core, be coated on the magnet steel that changes on the core outer surface, be set in the mandrel that changes in-core and be nested with and changeing bearing on the core end and the retainer ring that prevents the bearing axial slip, and bearing is fastened on the bearing bracket inwall, and the end of mandrel is connected with adjusting screw rod; Adjusting screw rod passes leading truck and peaks on the inwall of conehead; Laterally offer at least one L type groove on the described retainer ring inner side surface, the end that is equipped with the commentaries on classics core of bearing is provided with the salient point that matches with L type groove, and the salient point of described commentaries on classics core is embedded in the L type groove of retainer ring.

In order to make retainer ring and to change combine between the core more firm, be provided with glue between described retainer ring and the commentaries on classics core.

The quantity of described L type groove is two.

In order to make better tightness between wiring base and the support shell; Described wiring base offers annular groove with being connected of support shell on the end face; Be equipped with rubber ring in the annular groove; Be respectively arranged with step on the support shell madial wall and annular is provided with at least one convex tendon, convex tendon is arranged on the top of step, described support shell and wiring base through the convex tendon inlay card on rubber ring.

The quantity of described convex tendon is two.

In order in use to avoid contacting between coil and the coil, cause the phenomenon of short circuit, be connected with circuit board between described coil and the pin, coil is welded on a side of circuit board, and the circuit board another side is connected through lead with pin.

The invention has the beneficial effects as follows: a kind of step motor type IAC of the present invention, adopt this kind magnet steel assembly, making changes combining of core and retainer ring, the slippage that can avoid bearing with change wearing out of core; Combining of convex tendon and wiring base is set on the support shell, can effectively improves sealability; The pin of coil and wiring base is connected through the mode of circuit board, can avoid coil directly to contact with coil effectively, causes the phenomenon of short circuit, can avoid the rosin joint between coil and the pin simultaneously.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the present invention is further specified.

Fig. 1 is the overall structure schematic representation of a kind of step motor type IAC of the present invention;

Fig. 2 is the half sectional view of a kind of step motor type IAC of Fig. 1;

Fig. 3 is the structural representation of retainer ring among Fig. 2;

Fig. 4 is the sectional view of Fig. 3;

Fig. 5 is the structural representation of Fig. 2 transfer core and magnet steel;

Fig. 6 is the structural representation of support shell among Fig. 1;

Fig. 7 is the half sectional view of Fig. 6;

Fig. 8 is the enlarged diagram at A place among Fig. 7;

Fig. 9 is the internal structure schematic representation of Fig. 1.

1. support shells among the figure, 2. wiring base, 3. casing, 4. through hole, 5. leading truck, 6. bearing bracket, 7. sheath; 8. conehead, 9. spring, 10. pole plate, 11. first coil racks, 12. second coil racks, 13. coils, 14. change cores; 15. magnet steel, 16. mandrels, 17. bearings, 18. retainer rings, 19. adjusting screw rods, 20.L type groove, 21. salient points; 22. annular groove, 23. rubber rings, 24. steps, 25. convex tendons, 26. circuit boards, 27. pins.

Embodiment

Combine accompanying drawing that the present invention is done further detailed explanation now.These accompanying drawings are the schematic representation of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.

A kind of step motor type IAC as shown in Figure 1 comprises support casing 1 and the wiring base 2 that matches with support shell 1, is connected with sheath 7 at support casing 1 front end, and sheath 7 is provided with conehead 8, and four pins 26 are installed on wiring base 2.

Like Fig. 2, Fig. 3, Fig. 4 and a kind of step motor type IAC shown in Figure 5, comprise support shell 1 and the wiring base 2 that matches with support shell 1 and be arranged on support shell 1 and wiring base 2 between casing 3, offer through hole 4 on the support shell 1; The front-end and back-end of casing 3 are respectively arranged with the leading truck 5 that passes through hole 4 and are embedded in the bearing bracket 6 on the wiring base 2, and leading truck 5 outer installment have sheath 7, and the other end of sheath 7 is connected with conehead 8; Be provided with spring 9 between conehead 8 and the sheath 7, pole plate 10 is installed in the casing 3, be equipped with first coil rack 11 and second coil rack 12 on the pole plate 10 respectively; All be wound with coil 13 on first coil rack 11 and second coil rack 12, pin 27 is installed on the wiring base 2, coil 13 is connected with pin 27; Bearing bracket 6 is provided with the magnet steel assembly; The magnet steel assembly comprises changes core 14, be coated on the magnet steel 15 that changes on core 14 outer surfaces, be set in to change the mandrel 16 in the core 14 and be nested with and changeing bearing 17 on core 14 ends and the retainer ring 18 that prevents bearing 17 axial slips, and bearing 17 is fastened on bearing bracket 6 inwalls, and magnet steel 15 is to be magnetized by 6 pairs of utmost points; Table magnetic 1200GS; Can in-40 ℃～-130 ℃ environment, normally use, also carry out antirust processing on the surface of magnet steel 15, the end of mandrel 16 is connected with adjusting screw rod 19; Adjusting screw rod 19 passes leading truck 5 and peaks on the inwall of conehead 8; Laterally offer two L type grooves 20 on retainer ring 18 inner side surfaces, the end that is equipped with the commentaries on classics core 14 of bearing 17 is provided with the salient point 21 that matches with L type groove 20, and the salient point that changes core 14 is embedded in the L type groove 20 of retainer ring 18; Be provided with glue between retainer ring 18 and the commentaries on classics core 14; Offer annular groove 22 on the end face in wiring base 2 and being connected of support shell 1, be equipped with rubber ring 23 in the annular groove 22, can play the effect of sealing.

Like Fig. 6, Fig. 7 and a kind of step motor type IAC shown in Figure 8; Be respectively arranged with step 24 on support shell 1 madial wall and be provided with two convex tendons 25 with annular; Convex tendon 25 is arranged on the top of step 24, and described support shell 1 passes through convex tendon 25 inlay cards on rubber ring 23 with wiring base 2.

A kind of step motor type IAC as shown in Figure 9 is connected with circuit board 26 between coil 13 and the pin 27, and circuit board 26 is embedded in the middle of the casing 3, and coil 13 is welded on a side of circuit board 26, and circuit board 26 another sides and pin 27 are connected through lead.

The working principle of a kind of step motor type IAC of the present invention: the rotor that stepping motor type IAC is made up of permanent magnetism; The stator that field coil constitutes and convert straight-line feed screw and valve etc. to rotatablely moving and partly form; The stairstep signal that it utilizes system to supply with carries out conversion and control; Rotor can just be changeed, also can reverse, thereby spool (leading screw) carries out fore and aft motion to reach the purpose of regulating cross section, bypath air road; Thereby stable idle, and reach desirable idling speed.

With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm its technical scope according to the claim scope.

Claims

1. step motor type IAC; It is characterized in that: comprise support shell (1) and the wiring base (2) that matches with support shell (1) and be arranged on support shell (1) and wiring base (2) between casing (3); Offer through hole (4) on the described support shell (1); The front-end and back-end of described casing (3) are respectively arranged with the leading truck (5) that passes through hole (4) and are embedded in the bearing bracket (6) on the wiring base (2); Leading truck (5) outer installment has sheath (7); The other end of sheath (7) is connected with conehead (8), is provided with spring (9) between conehead (8) and the sheath (7), and pole plate (10) is installed in the described casing (3); Be equipped with first coil rack (11) and second coil rack (12) on the pole plate (10) respectively; All be wound with coil (13) on first coil rack (11) and second coil rack (12), pin (27) is installed on the wiring base (2), coil (13) is connected with pin (27); Described bearing bracket (6) is provided with the magnet steel assembly; Described magnet steel assembly comprises changes core (14), be coated on the magnet steel (15) that changes on core (14) outer surface, be set in the mandrel (16) that changes in the core (14) and be nested with bearing (17) on commentaries on classics core (14) end and the retainer ring (18) that prevents bearing (17) axial slip, and bearing (17) is fastened on bearing bracket (6) inwall, and the end of mandrel (16) is connected with adjusting screw rod (19); Adjusting screw rod (19) passes leading truck (5) and peaks on the inwall of conehead (8); Laterally offer at least one L type groove (20) on described retainer ring (18) inner side surface, the end that is equipped with the commentaries on classics core (14) of bearing (17) is provided with the salient point (21) that matches with L type groove (20), and the salient point (21) of described commentaries on classics core (14) is embedded in the L type groove (20) of retainer ring (18).

2. a kind of step motor type IAC according to claim 1 is characterized in that: be provided with glue between described retainer ring (18) and the commentaries on classics core (14).

3. a kind of step motor type IAC according to claim 1 is characterized in that: the quantity of described L type groove (20) is two.

4. a kind of step motor type IAC according to claim 1; It is characterized in that: described wiring base (2) offers annular groove (22) with being connected of support shell (1) on the end face; Be equipped with rubber ring (23) in the annular groove (22); Be respectively arranged with step (24) on support shell (1) madial wall and annular is provided with at least one convex tendon (25); Convex tendon (25) is arranged on the top of step (24), and described support shell (1) and wiring base (2) pass through convex tendon (25) inlay card on rubber ring (23).

5. a kind of step motor type IAC according to claim 4 is characterized in that: the quantity of described convex tendon (25) is two.

6. a kind of step motor type IAC according to claim 1; It is characterized in that: be connected with circuit board (26) between described coil (13) and the pin (27); Coil (13) is welded on a side of circuit board (26), and circuit board (26) another side is connected through lead with pin (27).