CN201302000Y

CN201302000Y - Normally-open high-frequency electromagnetic switching valve for automatic gear-box

Info

Publication number: CN201302000Y
Application number: CNU2008201687162U
Authority: CN
Inventors: 袁林杰
Original assignee: Wanxiang Group Corp
Current assignee: Wanxiang Group Corp
Priority date: 2008-12-01
Filing date: 2008-12-01
Publication date: 2009-09-02
Anticipated expiration: 2018-12-01

Abstract

The utility model relates to a normally-open high-frequency electromagnetic switching valve for an automatic gear-box. A limiting block is closely matched on the inner wall of a casing body, a valve core component comprises a large-diameter part, a middle part, a small-diameter part and a steel ball, wherein, the large-diameter part is connected with a precompression spring in a supporting seat, the middle part passes through the limiting block, the small-diameter part passes through an axial channel of a valve seat, and a valve core convex surface is formed between the middle part and the small-diameter part; the spherical surface of the steel ball and the conical surface at one end of the valve seat form a throttling opening, and the valve core convex surface and the conical surface at the other end of the valve seat form a throttling opening; a working oil port II is connected with a rear cavity, an oil inlet opening is connected with a front cavity, a working oil port I, the front cavity and the rear cavity form a channel through the valve seat, and the channel is provided with two throttling openings; a coil is arranged at the periphery of a supporting seat, and a coil cover installed outside the coil is respectively connected with the supporting seat and the casing body. The utility model has the advantages that the screw plug is only required to be unscrewed when the filter element is blocked, the filter element is taken out and replaced, and the entire switching valve can be continued to be used, therefore, the maintenance cost is reduced.

Description

Automatic transmission case is with high-frequency electromagnetic switch valve open in usual

Technical field

The utility model relates to a kind of electromagnetic switch valve, and especially a kind of automatic transmission case is with high-frequency electromagnetic switch valve open in usual.

Background technique

Present domestic this specification product that still do not have carries out technology control abroad always to this, import price is too high, can't bear.And original switch valve housing is an integral form, and after filter core was blocked, whole valve body can't be taken apart, can only integral body scrap processing, and maintenance cost is higher.

Summary of the invention

The utility model will solve the shortcoming of above-mentioned prior art, provide a kind of can autonomous production and the low automatic transmission case of maintenance cost with high-frequency electromagnetic switch valve open in usual.

The utility model solves the technological scheme that its technical problem adopts: this automatic transmission case is with high-frequency electromagnetic switch valve open in usual, the inner walls drive fit has limiting stopper, mangetic core assembly is by being combined into integral body before and after major diameter part, intermediate portion, small diameter portion and the steel ball, major diameter part is connected with pretensioned spring in the bearing, intermediate portion passes through limiting stopper, small diameter portion wherein has a spool convex surface by the axial passage of valve seat between intermediate portion and small diameter portion; The conical surface of the sphere of steel ball and valve seat one end forms a restriction, and the conical surface of the spool convex surface and the valve seat the other end forms another restriction; Actuator port two is connected with back cavity, and filler opening is connected with ante-chamber, and actuator port one forms a path, and contains two restrictions by valve seat and ante-chamber, back cavity; Be provided with high-precision filter core in the ante-chamber; There is coil the bearing periphery, and the coils overwraps of the outer dress of coil is connected with housing with bearing respectively; Coils overwraps is provided with wiring pile.

The housing front end has opening, and is communicated with ante-chamber, and opening is tightly filled in by plug screw, and plug screw is provided with thread locking adhesive.The housing front end is equipped with some groups of seal rings.

The beneficial effects of the utility model are: one, after filter core stops up, only need turn on plug screw, take out also more renew cartridge, just can greatly reduce maintenance cost so that whole switch valve continues to use; Two, can autonomous production, saved high price to external import.

Description of drawings

Fig. 1 is a cross-sectional view of the present utility model;

Description of reference numerals: pretensioned spring 1, mangetic core assembly 2, steel ball 3, high-precision filter core 4, seal ring 5, plug screw 6, housing 7, limiting stopper 8, wiring pile 9, coil 10, thread locking adhesive 11, filler opening 12, actuator port 1, actuator port 2 14, valve seat 15, bearing 16, coils overwraps 17, major diameter part 18, intermediate portion 19, small diameter portion 20, back cavity 21, ante-chamber 22, spool convex surface 23.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

With reference to accompanying drawing: the inwall drive fit of limiting stopper 8 and housing 7 in the utility model; There is coil 10 bearing 16 peripheries, and the coils overwraps 17 of coil 10 outer dresses is connected with housing 7 with bearing 16 respectively, and coils overwraps 17 is provided with wiring pile 9; Mangetic core assembly 2 is combined into integral body by major diameter part 18, intermediate portion 19, small diameter portion 20 and steel ball 3, pretensioned spring 1 in major diameter part 18 and the bearing 16 is connected, intermediate portion 19 is spacing by limiting stopper 8, small diameter portion 20 is by the axial passage of valve seat 15, and wherein 20 of intermediate portion 19 and small diameter portion have a spool convex surface 23; The conical surface of the sphere of steel ball 3 and valve seat 15 1 ends forms a restriction, and spool convex surface 23 forms another restriction with the conical surface of valve seat 15 the other ends; Actuator port 2 14 is connected with back cavity 21, and filler opening 12 is connected with ante-chamber 22, and actuator port 1 forms a path, and contains two restrictions by valve seat 15 and ante-chamber 22, back cavity 21.Be provided with high-precision filter core 4 in the ante-chamber 22, play the effect of oil strain.

As shown be not "on" position, pretensioned spring 1 acts on the mangetic core assembly 2, makes the spool convex surface 23 and the restriction of the conical surface formation of valve seat 15 1 ends close, and filler opening 12 and actuator port 1 communicate.When coil 10 energisings, core valve assembly 2 is under the effect of electromagnetic coil, toward moving left, this moment, steel ball 3 propped up the conical surface of valve seat 15 the other ends, closed this restriction, so the passage closure of filler opening 12 and actuator port 1, another restriction is opened simultaneously, the passage of actuator port 1 and actuator port 2 14 is connected, and has played the effect of commutation.

Housing 7 front ends have opening, and are communicated with ante-chamber 22, and opening is tightly filled in by plug screw 6.Envelope has thread locking adhesive 11 on the plug screw 6, has played the effect that prevents plug screw 6 leakage of oils.After high-precision filter core 4 stops up, as long as turn on plug screw 6, take out and change high-precision filter core 4, tighten plug screw 6 again, whole switch valve just can continue to have used.The some groups of seal rings 5 that housing 7 front ends are equipped with also are to play the effect that sealing prevents leakage of oil.

In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1, a kind of automatic transmission case is with high-frequency electromagnetic switch valve open in usual, it is characterized in that: housing (7) inwall drive fit has limiting stopper (8), mangetic core assembly (2) is by being combined into integral body before and after major diameter part (18), intermediate portion (19), small diameter portion (20) and the steel ball (3), the interior pretensioned spring (1) of major diameter part (18) and bearing (16) is connected, intermediate portion (19) is by limiting stopper (8), small diameter portion (20) wherein has a spool convex surface (23) by the axial passage of valve seat (15) between intermediate portion (19) and small diameter portion (20); The conical surface of the sphere of steel ball (3) and valve seat (15) one ends forms a restriction, and spool convex surface (23) forms another restriction with the conical surface of valve seat (15) the other end; Actuator port two (14) is connected with back cavity (21), and filler opening is connected with ante-chamber (22), and actuator port one (13) forms a path, and contains two restrictions by valve seat (15) and ante-chamber (22), back cavity (21); Be provided with high-precision filter core (4) in the ante-chamber (22); There is coil (10) bearing (16) periphery, and the coils overwraps (17) of the outer dress of coil (10) is connected with housing (7) with bearing (16) respectively; Coils overwraps (17) is provided with wiring pile (9).

2, automatic transmission case according to claim 1 is with high-frequency electromagnetic switch valve open in usual, and it is characterized in that: housing (7) front end has opening, and is communicated with ante-chamber (22), and opening tightly is plugged with plug screw (6).

3, automatic transmission case according to claim 2 is with high-frequency electromagnetic switch valve open in usual, and it is characterized in that: plug screw (6) is provided with thread locking adhesive (11).

4, automatic transmission case according to claim 1 is with high-frequency electromagnetic switch valve open in usual, and it is characterized in that: housing (7) front end is equipped with some groups of seal rings (5).