Electromagnetic head structure and shock absorber

Abstract

The embodiment of the utility model discloses an electromagnetic head structure and a shock absorber, and relates to the technical field of automobile parts. The electromagnetic head structure comprises a sleeve, an armature and a push rod. The sleeve is provided with a guide channel and a containing cavity which are communicated. The armature is arranged in the containing cavity in a sliding mode. The push rod is slidably arranged in the guide channel and is connected with the armature; wherein a step part is arranged in the guide channel so as to at least limit the guide channel to form a first channel and a second channel which are different in aperture, and a first gap between the first channel and the push rod is larger than a second gap between the second channel and the push rod. According to the electromagnetic head structure, the first gap between the first channel and the push rod is large, oil liquid can enter the electromagnetic head structure normally, the second gap between the second channel and the push rod is narrow, resistance of high-pressure oil liquid in the guide channel can be increased, oil liquid leakage is reduced, meanwhile, the electromagnetic head structure does not need to be additionally provided with a sealing gasket, and therefore the risk of sealing failure does not exist.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an electromagnetic head structure and a shock absorber. Background Technology

[0002] Current shock absorber control valves require the introduction of high-pressure hydraulic fluid into the solenoid head to increase the movement damping of the moving parts, reduce friction, and minimize the area of ​​the pilot feedback surface. However, introducing high-pressure hydraulic fluid into the solenoid head introduces new leakage problems, such as… Figure 1 As shown, conventional designs in related technologies often use a thin sheet inside the electromagnetic head to reduce leakage through end-face sealing. However, this design has poor anti-contamination capabilities. During the oil flushing process, the sealing gasket will leave the sealing end face, causing contaminant particles in the oil to adhere to the sealing end face, thereby causing the electromagnetic head to lose its high-pressure sealing capability.

[0003] Therefore, there is an urgent need for a new electromagnetic head structure and shock absorber. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an electromagnetic head structure and a shock absorber. The electromagnetic head structure can limit the guide channel to form a first channel and a second channel with different apertures by setting a step in the guide channel. The first gap between the first channel and the push rod is larger, which can ensure the normal entry of oil, while the second gap between the second channel and the push rod is narrower, which can increase the resistance of high pressure oil in the guide channel, thereby reducing oil leakage. At the same time, this structure does not require additional sealing gaskets, so there is no risk of sealing failure.

[0005] This utility model discloses an electromagnetic head structure, including:

[0006] The sleeve has a connecting guide channel and a receiving chamber;

[0007] An armature, slidably disposed within a receiving cavity; and

[0008] The push rod is slidably positioned in the guide channel and connected to the armature;

[0009] The guide channel is provided with a stepped section, which can at least limit the guide channel to form a first channel and a second channel with different apertures. The channel on the oil inlet side is defined as the first channel, and the channel on the other side is defined as the second channel. The first gap between the first channel and the push rod is greater than the second gap between the second channel and the push rod.

[0010] Furthermore, the step section has a ring-shaped structure, and the outer wall of the step section is integrally formed with the guide channel, while the inner wall of the step section itself cooperates to form a second channel.

[0011] Furthermore, an annular groove is provided at the center of the stepped portion to balance the oil pressure.

[0012] Furthermore, the armature has an annular groove at its center to balance the oil pressure.

[0013] Furthermore, the cross-section of the annular groove can be arc-shaped, square, or triangular.

[0014] Furthermore, the axial length of the first channel is a first length, and the axial length of the second channel is a second length, the second length being greater than the first length.

[0015] Furthermore, the push rod includes a main body section and a limiting section. The main body section is located in the guide channel. One end of the limiting section is connected to the main body section, and the other end is connected to the armature. The diameter of the limiting section is larger than the diameter of the main body section. The first gap is the gap between the main body section and the first channel, and the second gap is the gap between the main body section and the second channel.

[0016] Furthermore, the armature includes an armature body and a supporting part, one end of which is connected to the armature body and the other end of which abuts against the limiting section.

[0017] Furthermore, it also includes a housing and a coil, with the sleeve located inside the housing and the coil arranged between the housing and the sleeve.

[0018] This utility model embodiment also discloses a shock absorber, including the electromagnetic head structure as described above.

[0019] The electromagnetic head structure and shock absorber provided by this utility model have the following beneficial effects, including but not limited to:

[0020] 1) This electromagnetic head structure, by setting a step in the guide channel, can limit the guide channel to form a first channel and a second channel with different apertures. The first channel has a larger gap with the push rod, which can ensure the normal entry of oil, while the second channel has a narrower gap with the push rod, which can increase the resistance of high pressure oil in the guide channel, thereby reducing oil leakage. At the same time, this structure does not require additional sealing gaskets, so there is no risk of sealing failure.

[0021] 2) Compared with related technologies, this electromagnetic head structure eliminates the sealing gasket, reduces the number of sub-parts, improves assembly efficiency, and reduces costs. At the same time, it reduces the impact of the leakage under high pressure on the fitting clearance, thereby reducing the machining accuracy requirements of the sub-parts.

[0022] 3) By setting a longer second gap, this electromagnetic head structure can effectively reduce the wear of the push rod and sealing elements, and improve the service life of the electromagnetic head. Attached Figure Description

[0023] This specification will be further described by way of exemplary embodiments, which will be described in detail with reference to the accompanying drawings. These embodiments are not limiting; in these embodiments, the same reference numerals denote the same structures, wherein:

[0024] Figure 1 A structural diagram of the electromagnetic head structure provided for related technologies.

[0025] Figure 2 This is a schematic diagram of the electromagnetic head structure provided in one embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional view of an electromagnetic head structure provided in one embodiment of the present invention;

[0027] Figure 4 for Figure 3 A magnified view of a portion of the image;

[0028] Figure 5 for Figure 4 A schematic diagram of the flow of the medium-sized oil fluid;

[0029] Figure 6 A cross-sectional view of the guide channel provided in another embodiment of this utility model.

[0030] Icons: 100-Electromagnetic head structure; 10-Sleeve; 101-Guide channel; 1011-First channel; 1012-Second channel; 1014-Step section; 1041-Annular groove; 102-Accommodating chamber; 11-Armature; 111-Armature body; 112-Supporting part; 12-Push rod; 121-Main body section; 122-Limiting section; 13-Housing shell. Detailed Implementation

[0031] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0032] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the illustrations only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0033] Please refer to Figures 2-6 , Figure 2 This is a schematic diagram of the electromagnetic head structure 100 provided in one embodiment of the present invention; Figure 3 A cross-sectional view of an electromagnetic head structure 100 provided in one embodiment of the present invention; Figure 4 for Figure 3 A magnified view of a portion of the image; Figure 5 for Figure 4 A schematic diagram of the flow of the medium-sized oil fluid; Figure 6 This is a cross-sectional view of the guide channel provided in another embodiment of the present invention. The present invention provides an electromagnetic head structure 100, including a sleeve 10, an armature 11, and a push rod 12. The sleeve 10 has a guide channel 101 and a receiving chamber 102 that are connected. The armature 11 is slidably disposed in the receiving chamber 102. The push rod 12 is slidably disposed in the guide channel 101 and connected to the armature 11; wherein, the guide channel 101 is provided with a stepped portion, so as to at least define the guide channel 101 to form a first channel 1011 and a second channel 1012 with different apertures, defining the channel on the oil inlet side as the first channel 1011 and the channel on the other side as the second channel 1012, and the first gap between the first channel 1011 and the push rod 12 is greater than the second gap between the second channel 1012 and the push rod 12.

[0034] It is worth noting that the electromagnetic head structure 100, by setting a stepped portion in the guide channel 101, can limit the guide channel 101 to form a first channel 1011 and a second channel 1012 with different apertures. The first gap between the first channel 1011 and the push rod 12 is larger, which can ensure the normal entry of oil. The second gap between the second channel 1012 and the push rod 12 is narrower, which can increase the resistance of high-pressure oil in the guide channel 101, thereby reducing oil leakage. At the same time, this structure does not require additional sealing gaskets, so there is no risk of seal failure.

[0035] It should be understood that the side of the oil inlet mentioned in this embodiment is... Figure 3 The side marked in the diagram is the inlet area where the high-pressure oil enters the channel. Specifically, the oil flow direction is as follows: Figure 5 As shown.

[0036] Please refer to this again. Figure 3 and Figure 4 The step section has a ring-shaped structure, and the outer wall of the step section is integrally formed with the guide channel 101. The inner wall of the step section itself cooperates to form the second channel 1012.

[0037] It is worth noting that the stepped portion adopts a ring-shaped structure, and its outer wall is integrally formed with the guide channel 101. This enhances the connection strength between the stepped portion and the guide channel 101, simplifies the processing technology, reduces assembly steps, and improves production efficiency. Simultaneously, it avoids performance inconsistencies that may arise due to fitting errors during assembly. Depending on the specific implementation environment, the stepped portion can also be a wedge-shaped structure with a certain slope, as long as it ensures that the high-pressure oil has a side with a smaller gap during flow. This embodiment does not constitute a limitation on the specific structural type of the stepped portion.

[0038] Please refer to this again. Figure 3 and Figure 4 The axial length of the first channel 1011 is a first length, and the axial length of the second channel 1012 is a second length, the second length being greater than the first length. It can be understood that the axial length in this embodiment refers to... Figure 4 The length in the axial direction shown.

[0039] It is worth noting that by setting a longer second gap, the electromagnetic head structure 100 can effectively reduce the wear of the push rod 12 and the sealing element, thereby improving the service life of the electromagnetic head.

[0040] Please refer to this again. Figure 3 The push rod 12 includes a main body section 121 and a limiting section 122. The main body section 121 is located in the guide channel 101. One end of the limiting section 122 is connected to the main body section 121, and the other end is connected to the armature 11. The diameter of the limiting section 122 is larger than the diameter of the main body section 121. The first gap is the gap between the main body section 121 and the first channel 1011, and the second gap is the gap between the main body section 121 and the second channel 1012.

[0041] In this embodiment, the armature 11 includes an armature body 111 and a supporting portion 112. One end of the supporting portion 112 is connected to the armature body 111, and the other end abuts against the limiting section 122.

[0042] It is worth noting that, due to the setting of the abutment part 112, the connection between the armature 11 and the push rod 12 has an arc-shaped protrusion, which can ensure that the pushing direction of the armature 11 is always unique, and avoid the phenomenon of the push rod 12 deviating and colliding during the pushing process.

[0043] Please refer to this again. Figure 2 The electromagnetic head structure 100 also includes a housing 13 and a coil (not shown in the figure), with a sleeve 10 located inside the housing 13 and the coil arranged between the housing 13 and the sleeve 10.

[0044] Please refer to Figure 4 and Figure 6In different embodiments of this example, an annular groove 1014 is provided at the center of the stepped portion or the center of the push rod to balance the oil pressure. It is understood that the center of the stepped portion here refers to the exact center of the second channel 1012, which provides better oil pressure balancing. Depending on the specific implementation environment, it can also be set slightly to the left or right to adapt to different push rod 12 structures. Meanwhile, in another embodiment, an annular groove 1014 can be provided in the center of the push rod. Compared to providing an annular groove in the center of the stepped portion, this has the technical advantage of being easier to process, having lower manufacturing costs, and being more conducive to industrial application.

[0045] It is also worth noting that when the push rod 12 moves within the guide channel 101, especially when entering the second channel 1012 from the first channel 1011, the oil is compressed or flows rapidly, which can lead to a local pressure increase. The annular groove 1014 provides additional volume to accommodate excess oil, thereby alleviating the pressure increase and balancing the pressure. Furthermore, the annular groove improves the flow characteristics of the oil near the step, allowing the oil to flow more smoothly between the groove and the channel, preventing pressure accumulation caused by poor oil flow.

[0046] Please refer to this again. Figure 5 The cross-section of the annular groove 1014 may be arc-shaped, square, or triangular.

[0047] Understandably, an arc-shaped cross-section can guide the flow of high-pressure oil more naturally, reducing the formation of turbulence and eddies, thereby lowering hydraulic resistance. Simultaneously, the arc-shaped surface can distribute the oil pressure more evenly, avoiding localized high-pressure points that might be caused by sharp corners or right angles. Depending on the specific implementation environment, square, triangular, or other shaped annular grooves can be used.

[0048] This embodiment also provides a shock absorber having the above-described electromagnetic head structure 100 and having all of its beneficial effects.

[0049] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

[0050] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

[0051] Throughout this specification, references to "an embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present invention, but not necessarily in all embodiments. Therefore, the various representations of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic of any specific embodiment of the present invention can be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention shown herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0052] It should also be understood that one or more of the elements shown in the figures may be implemented in a more separate or more integrated manner, or may even be removed because they are inoperable in certain circumstances or provided because they may be useful for a particular application.

[0053] Furthermore, unless otherwise expressly stated, any arrows in the accompanying drawings should be considered illustrative only and not limiting. Additionally, unless otherwise stated, the term "or" as used herein is generally intended to mean "and / or". Where a term is anticipated to provide a separation or combination capability that is unclear, a combination of components or steps will also be considered as indicated.

[0054] As used herein and throughout the claims below, unless otherwise specified, “a” and “the” include the plural references. Similarly, as used herein and throughout the claims below, unless otherwise specified, “in” means “in” and “on”.

[0055] The above description of the embodiments shown in this utility model (including the content in the abstract of the specification) is not intended to be an exhaustive enumeration or to limit the utility model to the precise forms disclosed herein. Although specific embodiments and examples of the utility model have been described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the utility model, as will be recognized and understood by those skilled in the art. As indicated, these modifications can be made to the utility model in accordance with the above description of the embodiments of the utility model, and such modifications will be within the spirit and scope of the utility model.

[0056] This document has generally described the systems and methods in detail to aid in understanding the present invention. Furthermore, various specific details have been set forth to provide a general understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention can be practiced without one or more specific details, or using other devices, systems, accessories, methods, components, materials, parts, etc. In other instances, well-known structures, materials, and / or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. An electromagnetic head structure, characterized by comprising: include: The sleeve has a connecting guide channel and a receiving chamber; An armature is slidably disposed within the accommodating cavity; as well as The push rod is slidably disposed in the guide channel and connected to the armature; The guide channel is provided with a stepped portion, which can at least define the guide channel to form a first channel and a second channel with different apertures. The channel on the oil inlet side is defined as the first channel, and the channel on the other side is defined as the second channel. The first gap between the first channel and the push rod is greater than the second gap between the second channel and the push rod.

2. The head structure according to claim 1, wherein The step portion has a ring-shaped structure, and the outer wall surface of the step portion is integrally formed with the guide channel, while the inner wall surface of the step portion itself cooperates to form the second channel.

3. The head structure according to claim 2, wherein An annular groove is provided in the middle of the stepped section to balance the oil pressure.

4. The head structure according to claim 2, wherein The armature has an annular groove in the middle to balance the oil pressure.

5. The head structure according to claim 3 or 4, characterized in that The cross-section of the annular groove can be arc-shaped, square, or triangular.

6. The head structure of claim 1, wherein The axial length of the first channel is a first length, and the axial length of the second channel is a second length, the second length being greater than the first length.

7. The head structure of claim 1 wherein, The push rod includes a main body section and a limiting section. The main body section is located in the guide channel. One end of the limiting section is connected to the main body section, and the other end is connected to the armature. The diameter of the limiting section is larger than the diameter of the main body section. The first gap is the gap between the main body section and the first channel, and the second gap is the gap between the main body section and the second channel.

8. The head structure according to claim 7, wherein The armature includes an armature body and a supporting part, one end of which is connected to the armature body and the other end of which abuts against the limiting section.

9. The head structure of claim 1 wherein, It also includes a housing and a coil, with the sleeve located inside the housing and the coil arranged between the housing and the sleeve.

10. A shock absorber characterized by Including the electromagnetic head structure as described in any one of claims 1-9.

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