Solenoid valve structure for improving noise and vehicle equipped with same

Abstract

The utility model relates to an electromagnetic valve structure used for reducing noise and a vehicle equipped with the same, the electromagnetic valve structure used for reducing noise comprises a valve body provided with a first accommodating cavity; the plunger is arranged in the first containing cavity, and a first gap exists between the plunger and the valve body; the magnetic core is located at the first end of the plunger; the cover body covers the magnetic core; the at least one containing groove is formed in the inner surface of the first containing cavity of the valve body; the at least one sealing ring is arranged on the peripheral surface of the plunger and is embedded into the corresponding accommodating groove so as to seal the first gap; and in the moving process of the plunger, at least one sealing ring is kept in the state of being embedded into the corresponding containing groove through deformation. According to the electromagnetic valve structure for improving noise, the first gap is sealed, so that brake fluid cannot enter the second gap through the first gap, coexistence of residual air in the second gap and the brake fluid is avoided, and noise is avoided.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a solenoid valve structure for improving noise and a vehicle equipped with the structure. Background Art

[0002] The ESC (Electronic Stability Control) module on existing vehicles usually contains several solenoid valves, which are important components of the ESC system actuator and are used to accurately and quickly control the vehicle's braking system to ensure the stability of the vehicle's driving.

[0003] like Figure 1 As shown, the solenoid valve generally includes a valve body 100, a plunger 200, a base 400, a magnetic core 501 and a coil 502. The plunger 200 is arranged in the first accommodating cavity 101 of the valve body 100, and the base 400 is arranged in the second accommodating cavity 104 of the valve body 100. The plunger 200 can move along its own length direction in the first accommodating cavity 101 under the drive of the magnetic core 501 to block or open the base 400, thereby controlling the entry of brake fluid.

[0004] However, there is a first gap 210 between the plunger 200 and the valve body 100. The brake fluid flowing in from the base 400 will pass through the first gap 210 and enter the second gap 503 between the magnetic core 501 and the cover body 600. Since there is residual air in the second gap 503, the residual air in the second gap 503 will coexist with the brake fluid entering the second gap 503, and they will squeeze each other during the movement of the plunger 200, thereby generating noise. This noise can be transmitted to the interior of the vehicle, seriously affecting the driver and passenger experience.

[0005] Therefore, there is a need for further improvement of the existing solenoid valve.

[0006] The information disclosed in the background part of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0007] The utility model aims to provide a solenoid valve structure for improving noise and a vehicle equipped with the structure. The solenoid valve structure for improving noise is provided with a receiving groove on the inner surface of a first receiving chamber of a valve body, and a sealing ring is embedded in the receiving groove to seal a first gap, so that brake fluid cannot enter the second gap through the first gap, thereby avoiding the coexistence of residual air and brake fluid in the second gap, thereby avoiding the generation of noise.

[0008] According to a first aspect of the utility model, a solenoid valve structure for improving noise is provided, comprising: a valve body having a first accommodating cavity; a plunger arranged in the first accommodating cavity, with a first gap between the plunger and the valve body; a magnetic core located at a first end of the plunger; a cover body covering the magnetic core; at least one accommodating groove arranged on the inner surface of the first accommodating cavity of the valve body; and at least one sealing ring arranged on the outer peripheral surface of the plunger and embedded in the corresponding accommodating groove to seal the first gap; wherein, during the movement of the plunger, the at least one sealing ring maintains a state of being embedded in the corresponding accommodating groove by deformation.

[0009] Preferably, the first side of the accommodating groove has a first inclined surface to form a repulsion angle, and the length of the projection of the first inclined surface in the length direction of the first accommodating cavity ranges from 0.2 to 0.5 mm.

[0010] Preferably, the second side of the accommodating groove has a second inclined surface to form a rollback angle, and the length of the projection of the second inclined surface in the length direction of the first accommodating cavity ranges from 0.3 to 1.0 mm.

[0011] Preferably, the length of the projection of the second inclined surface in the length direction of the first accommodating cavity is not equal to the length of the projection of the first inclined surface in the length direction of the first accommodating cavity.

[0012] Preferably, the length of the projection of the second inclined surface in the length direction of the first accommodating cavity is greater than the length of the projection of the first inclined surface in the length direction of the first accommodating cavity.

[0013] Preferably, the cover has air holes.

[0014] Preferably, the valve body further has a second accommodating chamber, and the second accommodating chamber is connected to the first accommodating chamber through a through hole. The solenoid valve structure for improving noise further includes: a base, which is arranged in the second accommodating chamber and fixedly connected to the valve body.

[0015] Preferably, the solenoid valve structure for improving noise further comprises: a coil electrically connected to the on-board computer, wherein the coil can generate a magnetic field under the control of the on-board computer, and the magnetic field can drive the magnetic core to move toward the base.

[0016] Preferably, the solenoid valve structure for improving noise further comprises: a valve core, which is arranged at the second end of the plunger.

[0017] Preferably, the solenoid valve structure for improving noise further comprises: an elastic member installed in the first accommodating chamber, the elastic member can provide a rebound force to the plunger, and the rebound force causes the plunger to move along the first direction.

[0018] According to a second aspect of the present utility model, a vehicle is provided, which is equipped with the solenoid valve structure for improving noise as described in the first aspect.

[0019] The utility model discloses a solenoid valve structure for improving noise, wherein a receiving groove is arranged on the inner surface of a first receiving chamber of a valve body, and a sealing ring is embedded in the receiving groove to seal a first gap, so that brake fluid cannot enter the second gap through the first gap, thereby preventing residual air in the second gap from coexisting with the brake fluid, thereby preventing the generation of noise.

[0020] The device of the present invention has other characteristics and advantages, which will be obvious from the drawings and subsequent embodiments incorporated in this document, or will be described in detail in the drawings and subsequent embodiments incorporated in this document, which are used together to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the solenoid valve structure of the prior art;

[0022] Figure 2 It is a structural schematic diagram of a solenoid valve structure for improving noise according to an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the matching of the receiving groove and the sealing ring;

[0024] Figure 4 is a cross-sectional view of the cover;

[0025] Figure 5 is an enlarged view of the receiving tank;

[0026] Fig. 6A It is a schematic diagram of the sealing ring after deformation;

[0027] Figure 6B This is a schematic diagram of the sealing ring without deformation.

[0028] Description of reference numerals:

[0029] 100: valve body 101: first accommodating chamber

[0030] 102: Liquid inlet 103: Liquid outlet

[0031] 104: second accommodating cavity 105: through hole

[0032] 106: Indentation 107: Passage

[0033] 108: Elastic member

[0034] 200: plunger 210: first gap

[0035] 201: plunger body 202: first boss portion

[0036] 203: Second boss part

[0037] 300: valve core 400: base

[0038] 501: Magnetic core 502: Coil

[0039] 503: Second gap

[0040] 600: Cover 601: Ventilation hole

[0041] 700: Accommodation groove 701: Rollback angle

[0042] 702: Knockback angle 703: Second slope

[0043] 704: First slope

[0044] 800: Sealing ring.

[0045] It should be understood that the drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the basic principles of the present invention. The specific design features disclosed in the present invention (including, for example, specific dimensions, directions, positions, and shapes) will be determined in part by the specific intended application and use environment.

[0046] In the figures, like reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0047] Reference will be made in detail to various embodiments of the present invention, examples of which are presented in the accompanying drawings and described below. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modified forms, equivalent forms and other embodiments that may be included in the spirit of the present invention and within the scope defined by the appended claims.

[0048] Herein, the first direction refers to a direction in which the valve body 100 approaches the cover body 600 , and the second direction refers to a direction in which the valve body 100 moves away from the cover body 600 .

[0049] Herein, the first end of the plunger 200 refers to the end close to the cover 600, and the second end of the plunger 200 refers to the end (lower end) away from the cover 600. The first end of the plunger body 201 is the first end of the plunger 200, and the second end of the plunger body 201 is the second end of the plunger 200.

[0050] In this document, the first end of the valve body 100 refers to an end close to the cover body 600 , and the second end of the valve body 100 refers to an end away from the cover body 600 .

[0051] Herein, the first side of the receiving groove 700 refers to a side close to the cover body 600 , and the second side of the receiving groove 700 refers to a side away from the cover body 600 .

[0052] Figure 2 It is a structural schematic diagram of a solenoid valve structure for improving noise according to an embodiment of the utility model; Figure 3 It is a schematic diagram of the matching of the receiving groove and the sealing ring; Figure 4 is a cross-sectional view of the cover; Figure 5 is an enlarged view of the receiving tank; Fig. 6A It is a schematic diagram of the sealing ring after deformation; Figure 6B This is a schematic diagram of the sealing ring without deformation.

[0053] Combine the following Figures 2 to 6B , the solenoid valve structure for improving noise according to the implementation scheme of the utility model is described.

[0054] like Figure 2 and Figure 3 As shown, the electromagnetic valve structure for improving noise according to the embodiment of the utility model comprises: a valve body 100 , a plunger 200 , a magnetic core 501 , a cover body 600 , at least one receiving groove 700 and at least one sealing ring 800 .

[0055] The first end of the valve body 100 has a first accommodating cavity 101, the plunger 200 is arranged in the first accommodating cavity 101, the first end of the plunger 200 passes through the first accommodating cavity 101 (that is, passes through the first end of the valve body 100), and there is a first gap 210 between the plunger 200 and the valve body 100.

[0056] The magnetic core 501 is located at the first end of the plunger 200. The magnetic core 501 contacts the first end of the plunger 200 and is connected to the first end of the plunger 200. The cover 600 covers the magnetic core 501, and a second gap 503 exists between the cover 600 and the magnetic core 501.

[0057] At least one receiving groove 700 is disposed on the inner surface of the first receiving chamber 101 of the valve body 100 . At least one sealing ring 800 is disposed on the outer circumferential surface of the plunger 200 and is embedded in the corresponding receiving groove 700 to seal the first gap 210 .

[0058] In the process of the plunger 200 moving, at least one sealing ring 800 remains embedded in the corresponding receiving groove 700 by deformation.

[0059] In the embodiment of the utility model, a receiving groove 700 is provided on the inner surface of the first receiving chamber 101 of the valve body 100, and a sealing ring 800 is embedded in the receiving groove 700 to seal the first gap 210, so that the brake fluid cannot enter the second gap 503 through the first gap 210, thereby avoiding the coexistence of residual air and brake fluid in the second gap 503, thereby avoiding the generation of noise.

[0060] In an exemplary embodiment, Figure 2 As shown, the valve body 100 has a second accommodating chamber 104, which is connected to the first accommodating chamber 101 through a through hole 105, and the through hole 105 has a retracted portion 106. The second end of the plunger 200 extends into the second accommodating chamber 104 after passing through the through hole 105. The second end of the valve body 100 has a channel 107 and a liquid inlet 102, and the liquid inlet 102 is connected to the second accommodating chamber 104 through the channel 107. The outer peripheral surface of the second end of the valve body 100 has a liquid outlet 103 connected to the second accommodating chamber 104. The brake fluid enters the second accommodating chamber 104 through the liquid inlet 102 and the channel 107, and the brake fluid in the second accommodating chamber 104 flows out from the liquid outlet 103.

[0061] In an exemplary embodiment, Figure 2 As shown, the plunger 200 includes a plunger body 201, a first boss portion 202, and a second boss portion 203 formed as one body, wherein the first boss portion 202 is arranged at a position close to the plunger body 201, the second boss portion 203 is arranged at the middle of the plunger body 201, and the diameter of the first boss portion 202 is greater than the diameter of the second boss portion 203, the diameter of the first boss portion 202 matches the inner diameter of the first accommodating cavity 101, and the accommodating groove 700 is arranged at a position corresponding to the first boss portion 202 on the inner surface of the first accommodating cavity 101 of the valve body 100. The second end of the plunger body 201 (i.e., the second end of the plunger 200) extends into the second accommodating cavity 104 after passing through the through hole 105.

[0062] In an exemplary embodiment, Figure 2 As shown, an elastic member 108 is also installed in the first accommodating cavity 101 , and the elastic member 108 can provide a rebound force to the plunger 200 , and the rebound force makes the plunger 200 move along the first direction (the direction close to the cover body 600 ).

[0063] Specifically, the first end of the elastic member 108 is sleeved on the second boss portion 203 and abuts against the first boss portion 202 , and the second end of the elastic member 108 abuts against the retracted portion 106 of the valve body 100 .

[0064] In an exemplary embodiment, the elastic member 108 may be a coil spring, but the type of the elastic member 108 is not limited thereto and may be any form in the prior art as long as the above functions can be achieved.

[0065] In an exemplary embodiment, Figure 2 As shown, the electromagnetic valve structure for improving noise according to the embodiment of the utility model further includes: a valve core 300, which is arranged at the second end of the plunger 200. The valve core 300 is spherical and embedded in the second end of the plunger 200. The valve core 300 is used to seal the through hole 401 of the base 400 introduced later.

[0066] In an exemplary embodiment, Figure 2 As shown, the electromagnetic valve structure for improving noise of the embodiment of the utility model further includes: a base 400, which is arranged in the second accommodating chamber 104 and fixedly connected to the valve body 100, the base 400 is located at the second end of the plunger 200 and is not connected to the second end of the plunger 200, the base 400 surrounds the end of the channel 107 away from the liquid inlet 102, and the base 400 has a through hole 401. Under the action of the rebound force provided by the elastic member 108, the plunger 200 moves along the first direction (the direction close to the cover body 600), so that the valve core 300 moves along the first direction (the direction close to the cover body 600), and then the valve core 300 does not block the through hole 401 of the base 400.

[0067] In an exemplary embodiment, Figure 4 As shown, the cover 600 has a vent hole 601 , and the cover 600 surrounds the entire magnetic core 501 and the first end of the valve body 100 .

[0068] The second gap 503 is connected to the outside through the air holes 601 to prevent negative pressure from forming in the cover 600 , thereby avoiding affecting the movement of the magnetic core 501 toward or away from the base 400 .

[0069] In an exemplary embodiment, Figure 2As shown, the solenoid valve structure for improving noise of the embodiment of the utility model further includes: a coil 502, the coil 502 is electrically connected to the on-board computer, and the coil 502 can generate a magnetic field under the control of the on-board computer, and the magnetic field can drive the magnetic core 501 to move along the second direction (away from the cover body 600), and push the plunger 200 and the valve core 300 to move along the second direction (away from the cover body 600), thereby allowing the valve core 300 to block the through hole 401 of the base 400.

[0070] In an exemplary embodiment, Figure 5 As shown, the second side of the receiving groove 700 (the side away from the magnetic core 501 ) has a second inclined surface 703 to form a rollback angle 701 .

[0071] In an exemplary embodiment, the rollback angle 701 has an angle range of 29.5 degrees to 30.5 degrees.

[0072] In an exemplary embodiment, Figure 5 As shown, the length d1 of the projection of the second inclined surface 703 of the receiving groove 700 in the length direction of the first receiving cavity 101 is in the range of 0.3 to 1.0 mm, and the tolerance range of the length d1 is ±0.05 mm.

[0073] In an exemplary embodiment, Figure 5 As shown, a first side (a side close to the magnetic core 501 ) of the receiving groove 700 has a first inclined surface 704 to form a repulsion angle 702 .

[0074] In an exemplary embodiment, the knockback angle 702 has an angle ranging from 29.5 degrees to 30.5 degrees.

[0075] In an exemplary embodiment, Figure 5 As shown, the length d2 of the projection of the first inclined surface 704 of the receiving groove 700 in the length direction of the first receiving cavity 101 is in the range of 0.2 to 0.5 mm, and the tolerance range of the length d2 is ±0.05 mm.

[0076] In an exemplary embodiment, d1 is greater than d2.

[0077] In an exemplary embodiment, Figure 5 As shown, the length d3 of the projection of the receiving groove 700 in the length direction of the first receiving cavity 101 is in the range of 1 to 3 mm, and the tolerance range of the length d3 is ±0.05 mm.

[0078] The sealing ring 800 should be one that has no leakage after running 200,000 times.

[0079] exist Figure 2In the embodiment, the sealing ring 800 is set to 1, but the number thereof can be adjusted according to the situation, for example, it can be set to any number between 1-5.

[0080] The embodiment of the utility model further provides a vehicle, which is equipped with the aforementioned electromagnetic valve structure for improving noise. Other components and functions of the vehicle of the embodiment of the utility model are known to those skilled in the art, and will not be described in detail to reduce redundancy.

[0081] The operation of the solenoid valve structure for improving noise according to the embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0082] When the coil 502 is not energized, the plunger 200 moves along the first direction (the direction close to the cover 600) under the action of the rebound force provided by the elastic member 108, so that the valve core 300 moves along the first direction (the direction close to the cover 600), and then the valve core 300 does not block the through hole 401 of the base 400. The sealing ring 800 is located in the receiving groove 700 and seals the first gap 210.

[0083] After the coil 502 is energized, the coil 502 generates a magnetic field, which can drive the magnetic core 501 to move along the second direction (away from the cover 600), and push the plunger 200 and the valve core 300 to move along the second direction (away from the cover 600), so that the valve core 300 blocks the through hole 401 of the base 400 to block the entry of the brake fluid. When the plunger 200 moves along the second direction (away from the cover 600), the plunger 200 will drive the sealing ring 800 along the second direction (away from the cover 600), but due to the existence of the rollback angle 701, the deformed part of the sealing ring 800 will be contained in the rollback angle 701 (see FIG. 2 ). Fig. 6A ) to reduce the relative displacement between the sealing ring 800 and the plunger 200, thereby ensuring the sealing performance. In addition, the deformed sealing ring 800 has an elastic restoring force, which can act on the plunger 200, thereby increasing the resilience of the plunger 200, so that the plunger 200 can return quickly (see Figure 6B ).

[0084] After the coil 502 is powered off, the coil 502 no longer generates a magnetic field. Under the action of the resilience provided by the elastic member 108, the plunger 200 moves along the first direction (the direction close to the cover 600), so that the valve core 300 moves along the first direction (the direction close to the cover 600), and then the valve core 300 no longer blocks the through hole 401 of the base 400. In the above process of the plunger 200 moving along the first direction (the direction close to the cover 600), the following situations may exist:

[0085] After the sealing ring 800 returns to its original state, the plunger 200 continues to move along the first direction and drives the sealing ring 800 along the first direction, but due to the existence of the repulsion angle 702, a part of the sealing ring 800 that has been deformed will be received in the repulsion angle 702 (not shown in the figure) to reduce the relative displacement between the sealing ring 800 and the plunger 200, thereby ensuring the sealing performance.

[0086] For convenience of interpretation and precise definition of the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upper", "lower", "upward", "downward", "front", "back", "back", "inside", "outside", "inward", "outward", "interior", "exterior", "inner", "external", "forward", and "backward" are used to describe the features of the exemplary embodiments with reference to the positions of such features as shown in the accompanying drawings.

[0087] The description presented above of the specific exemplary embodiments of the utility model is for the purpose of illustration and description. The foregoing description is not intended to be exhaustive, nor is it intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations are possible based on the above teachings. The exemplary embodiments are selected and described in order to explain the specific principles of the utility model and its practical application, so that other technicians in the field can realize and utilize the various exemplary embodiments of the utility model and its different selected forms and modified forms. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A solenoid valve structure for improving noise, characterized in that: include: A valve body having a first accommodating chamber; A plunger is disposed in the first accommodating chamber, and a first gap exists between the plunger and the valve body; a magnetic core located at a first end of the plunger; A cover body, which covers the magnetic core; at least one receiving groove, which is arranged on the inner surface of the first receiving cavity of the valve body; as well as At least one sealing ring, which is arranged on the outer peripheral surface of the plunger and embedded in the corresponding receiving groove to seal the first gap; Wherein, during the movement of the plunger, the at least one sealing ring remains embedded in the corresponding receiving groove by deformation.

2. The solenoid valve structure for improving noise according to claim 1, characterized in that: The first side of the receiving groove has a first inclined surface to form a repulsion angle, and the length of the projection of the first inclined surface in the length direction of the first receiving cavity ranges from 0.2 to 0.5 mm.

3. The solenoid valve structure for improving noise according to claim 2, characterized in that: The second side of the receiving groove has a second inclined surface to form a rollback angle, and the length of the projection of the second inclined surface in the length direction of the first receiving cavity ranges from 0.3 to 1.0 mm.

4. The solenoid valve structure for improving noise according to claim 3, characterized in that: The length of the projection of the second inclined surface in the length direction of the first accommodating cavity is not equal to the length of the projection of the first inclined surface in the length direction of the first accommodating cavity.

5. The solenoid valve structure for improving noise according to claim 3, characterized in that: The length of the projection of the second inclined surface in the length direction of the first accommodating cavity is greater than the length of the projection of the first inclined surface in the length direction of the first accommodating cavity.

6. The solenoid valve structure for improving noise according to claim 1, characterized in that: The cover body has a ventilation hole.

7. The solenoid valve structure for improving noise according to claim 1, characterized in that: The valve body further has a second accommodating chamber, and the second accommodating chamber is connected to the first accommodating chamber through a through hole. The solenoid valve structure for improving noise further includes: A base is arranged in the second accommodating cavity and fixedly connected to the valve body.

8. The solenoid valve structure for improving noise according to claim 7, characterized in that: It further includes: The coil is electrically connected to the on-board computer. The coil can generate a magnetic field under the control of the on-board computer, and the magnetic field can drive the magnetic core to move toward the base.

9. The solenoid valve structure for improving noise according to claim 1, characterized in that: It further includes: A valve core is disposed at the second end of the plunger.

10. The solenoid valve structure for improving noise according to claim 1, characterized in that: It further includes: An elastic member is installed in the first accommodating chamber, and the elastic member can provide a rebound force to the plunger, and the rebound force makes the plunger move along the first direction.

11. A vehicle, characterized in that: The invention is equipped with a solenoid valve structure for improving noise as claimed in any one of claims 1 to 10.

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