Electromagnetic valve structure of high-pressure oil pump

Abstract

The utility model provides an electromagnetic valve structure of a high-pressure oil pump, which is characterized in that the electromagnetic valve structure comprises a movable iron core shaft, and the tail part of the movable iron core shaft is provided with a plug; the oil passing hole seat is arranged at the plug of the movable iron core shaft in a sleeving manner; one end of the iron core seat is connected with one end of the oil passing hole seat in a sleeving manner, and the iron core seat is arranged on the movable iron core shaft in a sleeving manner; an armature is sleeved on the movable iron core shaft at the other end of the iron core seat, an iron core seat upper sleeve is sleeved on the armature, a guide sleeve which is sleeved on the end part of the movable iron core shaft is arranged at the inner top end of the iron core seat upper sleeve, and the iron core seat is combined with the oil passing hole seat to form an inner cavity; an abutting structure is arranged on the movable iron core shaft in the inner cavity and enables the armature and the iron core base to be separated from each other. Through the arrangement of the abutting structure, the armature and the iron core base are not in contact or collided, deformation is prevented, and the service life of the electromagnetic valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high pressure oil pump solenoid valve structure. BACKGROUND

[0002] The high pressure fuel pump has a plunger slidingly fitted in a working cylinder, and the plunger reciprocates in a pressurizing chamber to compress and pressurize fuel introduced into the pressurizing chamber from a suction valve mechanism and discharge the fuel from a discharge valve mechanism.

[0003] The high pressure oil pump with normally closed valve structure, the armature and the core seat in the solenoid valve have abutting end faces, and the setting will cause the parts on both sides of the abutting end faces to impact and deform, affecting the service life of the solenoid valve. SUMMARY

[0004] The utility model discloses a kind of high pressure oil pump solenoid valve structures, which is provided with abutting structure, so that the armature and the core seat are not contacted and impacted, deformation is prevented, and the service life of the solenoid valve is guaranteed.

[0005] The utility model discloses a kind of high pressure oil pump solenoid valve structures, characterized by,

[0006] The moving core shaft has a plug at the tail portion;

[0007] The oil passage hole seat is sleeved on the plug of the moving core shaft;

[0008] The core seat is sleeved on one end of the oil passage hole seat and the moving core shaft;

[0009] The armature is sleeved on the moving core shaft at the other end of the core seat, and the core seat is sleeved on the armature.

[0010] Further, a plurality of first oil passage holes are formed in the oil passage hole seat, and a second oil passage hole, which is in communication with the inner cavity, is also formed in the oil passage hole seat.

[0011] Further, one end of the oil passage hole seat is sleeved on one end of the core seat and abuts against each other.

[0012] Further, the spring seat is sleeved on the moving core shaft in the inner cavity, and the solenoid valve spring is sleeved on the spring seat.

[0013] Further, one end of the solenoid valve spring abuts against the oil passage hole seat, and the other end of the solenoid valve spring abuts against the spring seat.

[0014] Further, a plurality of third oil passing holes are formed in the spring seat.

[0015] Further, the abutting structure is a welding seat, which is sleeved on the moving iron core shaft in the inner cavity and the connecting surface is fixed by laser welding.

[0016] Further, one end of the welding seat can abut against the end surface of the oil passing hole seat, so that the armature and the iron core seat end surface are always separated from each other to form an oil passing gap, and the size of the gap is 0.1-0.2mm.

[0017] Further, there is a certain gap between the iron core seat upper sleeve and the armature.

[0018] Further, a magnetic isolation ring is sleeved between one end of the iron core seat and the iron core seat upper sleeve.

[0019] Compared with the prior art, the advantages of the present application are that the abutting structure is arranged to prevent the armature and the iron core seat from contacting and colliding, prevent deformation, and ensure the service life of the electromagnetic valve. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 is a schematic view of an electromagnetic valve;

[0021] Fig. 2 is a schematic view of an electromagnetic valve in cross section;

[0022] In the figure, 1 is an iron core seat upper sleeve; 11 is a magnetic isolation ring; 2 is an iron core seat; 21 is an electromagnetic valve spring; 22 is a welding seat; 23 is a spring seat; 24 is a third oil passing hole; 3 is an oil passing hole seat; 31 is a first oil passing hole; 32 is a second oil passing hole; 4 is a plug; 41 is a moving iron core shaft; and 5 is a guide sleeve. DETAILED DESCRIPTION

[0023] The following is a specific embodiment of the present application and further describes the technical solution of the present application in combination with the drawings.

[0024] As shown in the drawings, Figs. 1-2 a high-pressure oil pump electromagnetic valve structure, characterized in that,

[0025] a moving iron core shaft 41, the tail of the moving iron core shaft 41 has a plug 4;

[0026] an oil passing hole seat 3, which is sleeved at the plug 4 of the moving iron core shaft 41;

[0027] an iron core seat 2, one end of which is sleeved with one end of the oil passing hole seat 3, and the iron core seat 2 is sleeved on the moving iron core shaft 41;

[0028] The moving iron core shaft 41 on the other end of the iron core seat 2 is sleeved with an armature, the armature is sleeved with an iron core seat upper sleeve 1, and the inner top end of the iron core seat upper sleeve 1 is sleeved with a guide sleeve 5 on the end of the moving iron core shaft 41, the iron core seat 2 and the oil passage seat 3 are combined to form an inner cavity, the moving iron core shaft 41 in the inner cavity is provided with an abutting structure and separates the armature and the iron core seat 2 from each other.

[0029] The movement trajectory of the moving iron core shaft 41 is reciprocating movement, when the abutting structure abuts against the oil passage seat 3 during movement, the armature is infinitely close to the iron core seat 2 at this time, but due to the existence of the abutting structure, the armature and the iron core seat 2 maintain a small gap, so that oil can pass through, and at the same time, the setting avoids the armature from contacting the iron core seat 2, prevents impact deformation, and increases the service life.

[0030] Further, a plurality of first oil passage holes 31 are formed in the oil passage seat 3, and a second oil passage hole 32 communicating with the inner cavity is also formed in the oil passage seat 3.

[0031] Further, one end of the oil passage seat 3 is sleeved with one end of the iron core seat 2 and abuts against each other.

[0032] Further, the moving iron core shaft 41 in the inner cavity is sleeved with a spring seat 23, and the spring seat 23 is sleeved with an electromagnetic valve spring 21.

[0033] Further, one end of the electromagnetic valve spring 21 abuts against the oil passage seat 3, and the other end of the electromagnetic valve spring 21 abuts against the spring seat 23. The elastic force of the electromagnetic valve spring 21 controls the opening and closing time of the electromagnetic valve.

[0034] Further, a plurality of third oil passage holes 24 are formed in the spring seat 23.

[0035] Further, the abutting structure is a welding seat 22, which is sleeved on the moving iron core shaft 41 in the inner cavity and the connecting surface is fixed by laser welding. The welding seat 22 plays a limiting role, adds a collision position, and makes the armature not contact the iron core seat 2, and at the same time, the oil passage seat 3 and the welding part are both heat-treated parts, the impact surface has better strength, and the impact deformation of the soft material armature is avoided.

[0036] Further, one end of the welding seat 22 can abut against the end face of the oil passage seat 3, so that the end faces of the armature and the iron core seat 2 are always separated from each other to form an oil passing gap, and the size of the gap is 0.1-0.2mm. Fig. 2 As shown, the gap at A when the valve is opened will be reduced to 0.1-0.2.

[0037] Further, there is a gap between the iron core seat upper sleeve 1 and the armature. The oil passing of the electromagnetic valve is through the gap between the armature and the iron core seat 2 and the gap between the iron core seat upper sleeve 1 and the armature (as Fig. 2The core seat 2 is provided with a magnetic shielding ring 11 between the other end and the upper sleeve 1.

[0038] Further, the core seat 2 is provided with the magnetic shielding ring 11 between the other end and the upper sleeve 1.

[0039] The above technical scheme of the utility model provides a solution significantly different from the prior art, and the parts not involved in the technical scheme of the application are the same as or can be realized by using the prior art, and thus will not be described herein.

[0040] The technical scheme in the above embodiments has clearly and completely described the content of the utility model, and obviously, the described embodiments are only some of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

Claims

1. A high-pressure oil pump solenoid valve structure, characterized in that, A movable iron core shaft, wherein the tail end of the movable iron core shaft has a plug; Oil passage seat, wherein the oil passage seat is sleeved on the plug of the moving iron core shaft; Iron core seat, one end of which is sleeved with one end of oil passage seat and the iron core seat is sleeved on the moving iron core shaft; An armature is fitted onto the moving iron core shaft at the other end of the iron core seat. An upper sleeve of the iron core seat is fitted onto the armature, and the top of the upper sleeve of the iron core seat has a guide sleeve fitted onto the end of the moving iron core shaft. The iron core seat and the oil passage seat are combined to form an inner cavity. The moving iron core shaft in the inner cavity is provided with an abutment structure that separates the armature from the iron core seat.

2. The high-pressure oil pump solenoid valve structure according to claim 1, characterized in that: The oil passage seat is provided with a plurality of first oil passage holes, and the oil passage seat is also provided with a second oil passage hole that communicates with the inner cavity.

3. The high-pressure oil pump solenoid valve structure according to claim 1, characterized in that: One end of the oil passage seat is sleeved with one end of the iron core seat and abuts against each other.

4. The high-pressure oil pump solenoid valve structure according to claim 1, characterized in that: A spring seat is fitted on the moving iron core shaft inside the cavity, and a solenoid valve spring is fitted on the spring seat.

5. The high-pressure oil pump solenoid valve structure according to claim 4, characterized in that, One end of the solenoid valve spring abuts against the oil passage seat, and the other end of the solenoid valve spring abuts against the spring seat.

6. The high-pressure oil pump solenoid valve structure according to claim 5, characterized in that, The spring seat is provided with several third oil passage holes.

7. The high-pressure oil pump solenoid valve structure according to claim 4, characterized in that, The abutment structure is a welding seat, which is sleeved on the moving iron core shaft in the inner cavity and the connecting surface is fixed by laser welding.

8. The high-pressure oil pump solenoid valve structure according to claim 7, characterized in that, One end of the welding seat can abut against the end face of the oil passage seat so that the armature and the end face of the iron core seat are always separated from each other to form an oil passage gap, the size of which is 0.1-0.2mm.

9. The structure of a high-pressure oil pump solenoid valve according to claim 8, characterized in that, There is a certain gap between the upper sleeve of the iron core seat and the armature.

10. The structure of a high-pressure oil pump solenoid valve according to claim 1, characterized in that, A magnetic shielding ring is fitted between one end of the iron core base and the upper sleeve of the iron core base.

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