CN210317957U - Vehicle electromagnetic valve with buffer structure - Google Patents

Abstract

A vehicle electromagnetic valve with a buffer structure comprises a first iron core and a second iron core. The first iron core is provided with a butting surface, a containing hole and a buffer sealing element, and the containing hole is formed in the first iron core in a sunken mode through the butting surface; the buffer sealing element is arranged in the accommodating hole. The second iron core is provided with a hollow shell, a sealing barrel, an elastic component and a rear end cover. The sealing barrel piece is movably accommodated in the outer shell and exposed out of one end of the outer shell, the rear end cover is fixed at the other end of the outer shell, the elastic assembly is accommodated in the outer shell, two ends of the elastic assembly are respectively abutted against the sealing barrel piece and the rear end cover, the outer diameter of the exposed part of the sealing barrel piece is smaller than the inner diameter of an inlet of the accommodating hole, and when the first iron core and the second iron core are close to each other, the outer end face of the sealing barrel piece is abutted against the buffering sealing piece.

Description

Vehicle electromagnetic valve with buffer structure

Technical Field

The utility model relates to an automobile-used solenoid valve with buffer structure, in particular to a prevent deadlock braking system's solenoid valve structure for car.

Background

With the development of automobile manufacturing technology, automobiles are generally equipped with an Anti-lock braking system (ABS) to prevent the vehicle from being out of control and improve the safety of the vehicle. Even anti-deadlock braking systems are applied to braking systems of locomotives. The deadlock-proof brake system is provided with an electromagnetic valve or a vehicle electromagnetic valve on a brake pipeline, when the wheel brake oil pressure is sensed to be too large or deadlock, the electromagnetic valve is electrified to start the vehicle electromagnetic valve to control the brake pipeline, and the pressure in the brake cylinder is reduced to continue rising. The wheels do not lock and slip.

Because the magnetic force of the vehicle electromagnetic valve is increased after the vehicle electromagnetic valve is electrified, when the two iron cores are abutted, a great collision force is generated, and the impact and uncomfortable noise of the assembly are caused. How to reduce the impact of the component to prolong the service life of the component; on the other hand, how to reduce the noise of the electromagnetic valve for vehicle to provide better driving feeling is a subject to be improved.

SUMMERY OF THE UTILITY MODEL

An embodiment of the present invention provides a vehicular solenoid valve with a buffering structure, which solves the above-mentioned problem.

In order to solve the above-described problems, an embodiment of the present invention provides a vehicle solenoid valve with a buffering structure, which includes a first iron core and a second iron core. The first iron core is provided with an abutting surface, a containing hole and a buffer sealing element, and the containing hole is formed in the first iron core in a concave mode through the abutting surface; the buffer sealing piece is arranged in the accommodating hole. The second iron core is provided with a hollow outer shell, a sealing barrel part, an elastic component and a rear end cover, the sealing barrel part is movably contained in the outer shell and exposed at one end of the outer shell, the rear end cover is fixed at the other end of the outer shell, the elastic component is contained in the outer shell, two ends of the elastic component are respectively abutted against the sealing barrel part and the rear end cover, the outer diameter of the exposed part of the sealing barrel part is smaller than the inner diameter of an inlet of the containing hole, and when the first iron core and the second iron core are close to each other, the outer end face of the sealing barrel part is abutted against the buffer sealing part.

Preferably, according to the present invention, in an embodiment of the present invention, the first iron core is movable, the second iron core is stationary, the sealing barrel has an outer end surface and a stopping protruding ring, the stopping protruding ring protrudes from the outer end surface toward the first iron core, and when the first iron core moves toward the second iron core, the stopping protruding ring of the sealing barrel abuts against the buffering sealing member.

Preferably, according to the utility model provides an in one of them embodiment provide an automobile-used solenoid valve with buffer structure, still include an outer seal circle, the second iron core the shell body has an annular holding portion orientation first iron core is outstanding, the outer seal circle accept in annular holding portion, the outer seal circle outstanding in annular holding portion, the center footpath of outer seal circle is greater than the holding hole, works as first iron core with the second iron core is close to the back mutually, the outer seal circle butt in the butt face of first iron core.

Preferably, according to an embodiment of the present invention, the accommodating hole has an outer hole portion and an inner hole portion, an inner diameter of the inner hole portion is smaller than an inner diameter of the outer hole portion, a part of the cushion sealing member is disposed in the inner hole portion, and another part of the cushion sealing member is disposed in the outer hole portion.

Preferably, according to the utility model discloses a vehicle solenoid valve with buffer structure that one of them embodiment provided, sealed bobbin spare has a preceding stack shell and a back stack shell, back stack shell connect in preceding stack shell, the external diameter of back stack shell is greater than the external diameter of preceding stack shell.

Preferably, according to the utility model provides a vehicle solenoid valve with buffer structure that one of them embodiment provided, the second iron core still has an inner sealing circle, the inner sealing circle cover is located the periphery of preceding stack shell is and border on the back stack shell, inner sealing circle butt in the inside wall face of shell body.

Preferably, according to the utility model provides a vehicle solenoid valve with buffer structure that one of them embodiment provided, the sealed barrel spare the external diameter of preceding barrel is less than the internal diameter of the outer hole portion of holding the hole, works as after the sealed barrel spare with the butt face mutual butt of first iron core, the periphery of preceding barrel with hold the hole the internal wall of outer hole portion has a clearance between.

Preferably, according to the utility model provides a vehicle solenoid valve with buffer structure that one of them embodiment provided, the sealed barrel still includes an evagination alar part, the evagination alar part along being on a parallel with the direction of butt face by the outer terminal surface of sealed barrel is outstanding, the external diameter of evagination alar part is less than the holding hole, work as first iron core with the second iron core is close to each other just outer terminal surface butt in behind the buffer seal spare, evagination alar part butt in the shell body of second iron core.

Preferably, according to the present invention, in an embodiment of the present invention, the second iron core further includes an inner blocking cylinder, the inner blocking cylinder is located in the outer shell and located between the sealing cylinder and the rear end cap, wherein the elastic component passes through the inner blocking cylinder.

Preferably, according to the present invention, in an embodiment of the present invention, the inner stop cylinder includes an inner lining portion and an outer edge portion, the outer edge portion is connected to one end of the inner lining portion and abuts against the outer edge of the outer housing, and the rear end cap fixes the outer edge portion to the outer housing.

Preferably, according to the utility model discloses a vehicle solenoid valve with buffer structure that one of them embodiment provided still includes a amortization piece, amortization piece is close to the rear end cap to an air current guide post has, the rear end cap has a through-hole, air current guide post passes the through-hole and extends to in the shell of second iron core.

The beneficial effects of the utility model can lie in, the embodiment of the utility model provides an in the adsorption process of first iron core and second iron core, elastic component can absorb the impulse, provides buffer function, produced collision strength and noise when reducing first iron core and second iron core butt each other. The utility model discloses a sealed barrel spare has buffer structure, can more prolong the life of buffering sealing member.

For a further understanding of the nature and technical content of the present invention, reference should be made to the following detailed description of the invention and accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Drawings

Fig. 1 is a sectional view of a first embodiment of a vehicle solenoid valve having a cushion structure according to the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a partial enlarged view of fig. 1 after energization.

Fig. 4 is a sectional view of a second embodiment of the vehicular solenoid valve having a buffer structure according to the present invention.

Fig. 5 is a partially enlarged view of fig. 4.

Fig. 6A is a partial enlarged view of fig. 4 after the energization.

Fig. 6B is a partially enlarged view of the first core continuously actuated after the energization in fig. 4.

Fig. 7 is a sectional view of a third embodiment of the vehicular solenoid valve having a cushion structure according to the present invention.

Fig. 8 is a partially enlarged view of fig. 7.

Fig. 9 is a partial enlarged view of fig. 7 after energization.

Detailed Description

[ first embodiment ]

Fig. 1 is a cross-sectional view of a first embodiment of a vehicular solenoid valve with a buffering structure according to the present invention. The utility model provides a vehicle solenoid valve 100 with buffer structure, it includes a disk seat 1 and a valve body 2. The valve body 2 is connected to the valve seat 1. The valve body 2 accommodates a first iron core 3, a second iron core 5, and a coil assembly 4 wound around the first iron core 3 and the second iron core 5. For convenience of description, the air inlet end of the vehicular solenoid valve is referred to as the head end, i.e., the left end in fig. 1, and the air outlet end is referred to as the tail end, i.e., the right end in fig. 1.

A return spring 12 is arranged in the valve seat 1, and the return spring 12 is positioned at the front end of the first iron core 3. The tail end of the first iron core 3 faces the head end of the second iron core 5, and the tail end of the second iron core 5 is provided with a silencing piece 6. In the present embodiment, the first core 3 is a movable member, or may be called an armature (armature); the second core 5 is a stationary member, or may be referred to as a stationary core (core). The first core 3 and the second core 5 are made of a magnetic material, such as magnetically permeable stainless steel.

Please refer to fig. 2 to 3. The first core 3 has a contact surface 31, a receiving hole 32 and a buffer seal 33. The abutment surface 31 faces the second core 5. The receiving hole 32 is formed in the first core 3 by the abutting surface 31. The buffer sealing member 33 is disposed in the receiving hole 32, and the buffer sealing member 33 is made of a material capable of absorbing impact and can form a seal with the second core 5.

The receiving hole 32 of the present embodiment has an outer hole portion 320 and an inner hole portion 322, wherein the inner diameter of the inner hole portion 322 is smaller than the inner diameter of the outer hole portion 320. A portion of the cushion seal 33 is disposed in the inner hole portion 322, and another portion of the cushion seal 33 is disposed in the outer hole portion 320. The top face of the cushion seal 33 is lower than the abutment face 31 of the first core 3, in other words, the cushion seal 33 does not fill the accommodation hole 32.

The second core 5 of this embodiment has a hollow outer casing 51, a sealing cylinder 52, an elastic member 53, and a rear cover 54 (see fig. 1). The outer housing 51 is a metal housing and may be made of magnetically attractable material. Both ends of the outer case 51 are open. The sealing cylinder 52 is also hollow and has two open ends. The sealing cylinder 52 is movably accommodated in the outer casing 51, and a part of the sealing cylinder 52 is exposed out of one end of the outer casing 51, namely, the end facing the first iron core 3. The rear end cap 54 is fixed to the other end of the outer housing 51, that is, the end remote from the first core 3. The elastic element 53 is accommodated in the outer housing 51, and the elastic element 53 is a compression spring in this embodiment, but is not limited thereto. The elastic member 53 abuts the sealing cylinder 52 and the rear cover 54 at both ends thereof, respectively.

The rear end cap 54 of the present embodiment may be fixed to the outer housing 51 by, for example, a magnetic attraction method, a screw locking method, a snap-fit method, or a welding method. The rear end cap 54 may be made of a magnetic material and has permanent magnetism, so as to be attached to the outer casing 51 of the second core 5 for holding the elastic element 53 in the outer casing 51. The assembly steps of this embodiment are as follows, firstly, the sealing cylinder 52 is placed into the outer shell 51 of the second iron core 5, then the elastic component 53 of the compression spring is placed into the outer shell 51 of the second iron core 5, the outer shell 51 can attract the rear end cover 54 with permanent magnetism, then, the whole second iron core 5 and the coil assembly 4 are placed into a plastic mold to form the valve body 2 in a manner of embedding and ejecting, and the rear end cover 54 is fixed at the tail end of the outer shell 51 of the second iron core 5, thus completing the assembly steps.

Referring to fig. 4, the rear cover 54 of the present embodiment includes a through hole 540, and the silencer 6 includes an outer cover 61 and an airflow guiding column 62. The airflow guiding post 62 is integrally connected to the outer cover plate 61, and the airflow guiding post 62 extends into the through hole 540 of the rear end cover 54 and into the outer housing 51 of the second core 5.

One advantage of the above structure is that the sealing cylinder 52 of the second core 5 is exposed to the outer casing 51 in a protruding manner, and is closer to the first core 3, so that the magnetic flux between the first core 3 and the second core 5 can be increased when the power is first turned on, so as to accelerate the start-up action. In addition, when the first iron core 3 and the second iron core 5 approach each other, the sealing barrel 52 of the second iron core 5 abuts against the buffer sealing member 33 of the first iron core 3, and then the elastic component 53 can absorb some impulse in the process that the first iron core 3 continuously approaches the outer shell 51 of the second iron core 5, thereby providing a buffer function. Therefore, the present embodiment can design different spring coefficients and ensure the sealing force between the buffer sealing member 33 and the sealing cylinder member 52 according to the compression length between the buffer sealing member 33 and the sealing cylinder member 52 after the first iron core 3 and the second iron core 5 are contacted. The utility model discloses a sealed barrel 52 produces buffering effect with elastic component 53 together, can more prolong the life of buffering sealing member 33. In addition, the collision force and noise generated when the first core 3 and the second core 5 abut against each other can be reduced, and the service life of the structure of the electromagnetic valve 100 for a vehicle can be further increased.

The outer diameter of the sealing cylinder 52 of the present embodiment is smaller than the inner diameter of the inlet of the accommodating hole 32, that is, the sealing cylinder 52 can enter the accommodating hole 32 and abut against the buffer seal 33. When the first core 3 and the second core 5 approach each other, the outer end surface 5210 of the sealing cylinder 52 abuts against the cushion seal 33. More specifically, the first core 3 of the present embodiment is movable, and the second core 5 is stationary fixed in the valve body 2. The sealing cylinder 52 has an outer end surface 5210 and a stop protrusion ring 5211, and the stop protrusion ring 5211 protrudes from the outer end surface 5210 toward the first iron core 3. When the first iron core 3 moves toward the second iron core 5, the stop protrusion ring 5211 of the sealing barrel 52 abuts against the buffer sealing member 33, as shown in fig. 3.

As shown in fig. 2 and 3, the vehicular solenoid valve with a buffering structure according to the present embodiment further includes an outer sealing ring 55 disposed outside the outer shell 51 of the second core 5 to enhance the sealing effect. In order to hold the outer sealing ring 55, the outer housing 51 of the second core 5 has an annular accommodating portion 515 protruding toward the first core 3, and the outer sealing ring 55 is accommodated in the annular accommodating portion 515 in a sleeved manner. The outer seal ring 55 protrudes from the annular accommodating portion 515, and the center diameter of the outer seal ring 55 is larger than the accommodating hole 32. When the first core 3 and the second core 5 approach each other, the outer seal ring 55 abuts against the abutment surface 31 of the first core 3.

The sealing cylinder 52 of this embodiment has a front cylinder 521 and a rear cylinder 522. The rear barrel 522 is integrally connected to the front barrel 521. The outer diameter of the rear barrel 522 is larger than that of the front barrel 521. The second core 5 further has an inner sealing ring 524 disposed inside the outer shell 51 of the second core 5. Specifically, the inner seal ring 524 is fitted around the outer periphery of the front barrel 521 and abuts the rear barrel 522, and the inner seal ring 524 abuts an inner wall surface of the outer housing 51. The present embodiment includes three layers of sealing contact, in which the stop protrusion ring 5211 contacts the buffer seal 33; secondly, the outer seal ring 55 abuts against the abutment surface 31 of the first core 3; third, the inner seal ring 524 abuts against the inner wall surface of the outer case 51, thereby providing excellent sealing performance.

Referring to fig. 3, another advantage of this embodiment is that the outer diameter of the front barrel 521 of the sealing barrel 52 is smaller than the inner diameter of the outer hole portion 320 of the accommodating hole 32. When the sealing cylinder 52 abuts against the cushion seal 33 of the first core 3, a gap G is formed between the outer periphery of the front cylinder 521 and the inner wall surface of the outer hole 320 of the accommodating hole 32. Therefore, in the gap G between the accommodating hole 32 and the sealing cylinder 52 of the present embodiment, after the first iron core 3 and the second iron core 5 are abutted to each other, an air space is formed between the sealing cylinder 52 of the second iron core 5 and the first iron core 3, instead of a magnetic conductive material. For example, the gap G between the outer periphery of the seal barrel 52 and the inner wall surface of the outer bore portion 320 of the present embodiment may be 0.3 mm to 1.0 mm. This is advantageous in that the magnetic flux density is reduced before the first core 3 and the second core 5 approach each other and come into contact with each other. That is, the magnetic attraction force at the time of the quick abutment between the first core 3 and the second core 5 is reduced. Therefore, the collision force and noise generated when the first iron core 3 and the second iron core 5 are abutted to each other can be reduced, and the service life of the automotive electromagnetic valve structure can be prolonged.

[ second embodiment ]

Referring to fig. 4 to 6B, the main difference between the vehicular solenoid valve 100a with a buffering structure of the present embodiment and the first embodiment is that the sealing cylinder 52a further includes an external protruding wing portion 5213, and the external protruding wing portion 5213 protrudes from the external end surface 5210 of the sealing cylinder 52a along a direction parallel to the abutting surface 31. The outward protruding wing portion 5213 of the present embodiment is annular and extends outward in a direction perpendicular to the moving direction of the second core 5. The outer diameter of the external protruding wing portion 5213 is smaller than the accommodating hole 32, when the first iron core 3 and the second iron core 5 approach each other, the stopping protruding ring 5211 abuts against the buffer sealing member 33, and then the sealing cylinder 52a pushed by the buffer sealing member 33 moves toward the rear end cover 54 until the external protruding wing portion 5213 contacts the outer shell 51, as shown in fig. 6B.

Referring to fig. 6A and 6B, the present embodiment has an advantage in that the outer protruding wing portion 5213 can increase the stopping function and the air-tight effect. When the electromagnetic valve 100a for a vehicle is energized, the first iron core 3 and the second iron core 5 are magnetically conductive, and then the first iron core 3 is displaced toward the second iron core 5 until the buffer sealing member 33 of the first iron core 3 contacts the retaining protrusion ring 5211 of the sealing cylinder 52a of the second iron core 5, and then stops until the outer protrusion portion 5213 contacts the outer housing 51.

[ third embodiment ]

Referring to fig. 7 to 9, the main difference between the vehicular solenoid valve 100b with a buffering structure of the present embodiment and the first embodiment is that the second iron core 5 further includes an inner stopping tube 57, the inner stopping tube 57 is located inside the outer housing 51 and between the sealing tube 52 and the rear end cap 54, and the elastic component 53 penetrates through the inner stopping tube 57.

In a feasible implementation of the inner stop cylinder 57 of the present embodiment, the inner stop cylinder 57 includes an inner lining portion 571 and an outer edge portion 572, the outer edge portion 572 is connected to one end of the inner lining portion 571 and abuts against the outer edge of the outer housing 51, and the rear end cover 54 fixes the outer edge portion 572 to the outer housing 51.

Referring to fig. 9, in the vehicular electromagnetic valve 100b of the present embodiment, after the first iron core 3 and the second iron core 5 are energized, and after the first iron core 3 is magnetically conducted, the inner stopping cylinder 57 has an advantage of strengthening the stopping of the sealing cylinder 52, so that the sealing cylinder 52 is reliably abutted against the buffering sealing element 33.

To sum up, the beneficial effects of the utility model can lie in, the utility model discloses an in the adsorption process of first iron core 3 and second iron core 5, elastic component 53 can absorb the impulse, provides buffer function. The utility model discloses a sealed barrel 52 produces buffering effect with elastic component 53 together, can more prolong the life of buffering sealing member 33.

The above only be the practical embodiment of preferred of the utility model, therefore not limit the utility model discloses a patent range, the event all uses the utility model discloses the equivalent technical change that specification and drawing were done all contain in the utility model discloses a within range of protection.

Claims (11)

1. A vehicle electromagnetic valve with a buffer structure comprises a valve seat, a valve body, a first iron core, a second iron core and a coil group, wherein the valve body is connected with the valve seat, the valve body accommodates the first iron core, the second iron core and the coil group, and the coil group is wound on the peripheries of the first iron core and the second iron core; the buffer sealing piece is arranged in the accommodating hole; and the second iron core is provided with a hollow outer shell, a sealing barrel part, an elastic component and a rear end cover, the sealing barrel part is movably contained in the outer shell and exposed at one end of the outer shell, the rear end cover is fixed at the other end of the outer shell, the elastic component is contained in the outer shell, two ends of the elastic component are respectively abutted against the sealing barrel part and the rear end cover, the outer diameter of the exposed part of the sealing barrel part is smaller than the inner diameter of an inlet of the containing hole, and when the first iron core and the second iron core are close to each other, the outer end face of the sealing barrel part is abutted against the buffer sealing part.

2. The vehicular solenoid valve according to claim 1, wherein the first iron core is movable, the second iron core is stationary, the sealing barrel has an outer end surface and a stop protruding ring, the stop protruding ring protrudes from the outer end surface toward the first iron core, and when the first iron core moves toward the second iron core, the stop protruding ring of the sealing barrel abuts against the buffer sealing member.

3. The vehicular solenoid valve according to claim 1, further comprising an outer sealing ring, wherein the outer housing of the second core has an annular receiving portion protruding toward the first core, the outer sealing ring is received in the annular receiving portion, the outer sealing ring protrudes from the annular receiving portion, a central diameter of the outer sealing ring is larger than the receiving hole, and when the first core and the second core are close to each other, the outer sealing ring abuts against the abutting surface of the first core.

4. The vehicular solenoid valve having a shock-absorbing structure according to claim 1, wherein said accommodation hole has an outer hole portion and an inner hole portion, an inner diameter of said inner hole portion is smaller than an inner diameter of said outer hole portion, a part of said cushion seal is disposed in said inner hole portion, and another part of said cushion seal is disposed in said outer hole portion.

5. The vehicular solenoid valve according to claim 4, wherein said seal barrel member has a front barrel and a rear barrel, said rear barrel being connected to said front barrel, said rear barrel having an outer diameter larger than that of said front barrel.

6. The vehicular solenoid valve according to claim 5, wherein the second core further comprises an inner sealing ring, the inner sealing ring is sleeved on the periphery of the front barrel and abuts against the rear barrel, and the inner sealing ring abuts against the inner side wall surface of the outer housing.

7. The vehicular electromagnetic valve having a shock-absorbing structure according to claim 5, wherein an outer diameter of the front cylindrical body of the sealed cylindrical member is smaller than an inner diameter of the outer hole portion of the housing hole, and when the contact surfaces of the sealed cylindrical member and the first core are in contact with each other, a gap is provided between an outer periphery of the front cylindrical body and an inner wall surface of the outer hole portion of the housing hole.

8. The vehicular electromagnetic valve having a shock-absorbing structure according to claim 1, wherein the seal cylinder further includes an outward-projecting wing portion that projects from the outer end surface of the seal cylinder in a direction parallel to the abutment surface, the outward-projecting wing portion having an outer diameter smaller than the receiving hole and abutting against the outer case of the second core when the first core and the second core approach each other and the outer end surface abuts against the shock-absorbing seal.

9. The vehicular solenoid valve according to claim 1, wherein said second core further comprises an inner stopper tube disposed in said outer housing and between said seal tube member and said rear end cap, wherein said elastic member passes through said inner stopper tube.

10. The vehicular solenoid valve according to claim 9, wherein the inner retainer comprises an inner portion and an outer edge portion, the outer edge portion is connected to one end of the inner portion and abuts against an outer edge of the outer housing, and the rear cover fixes the outer edge portion to the outer housing.

11. The vehicular solenoid valve according to claim 1, further comprising a noise reducing member which is adjacent to the rear end cap and has an air flow guide post, the rear end cap having a through hole, the air flow guide post passing through the through hole and extending into the outer case of the second core.

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