Damper mechanism and shock absorber

Abstract

The damper mechanism comprises a first sleeve, a coil fixing seat and an electromagnetic valve control portion, the electromagnetic valve control portion comprises a shell, a valve deck and a valve armature, a containing cavity is formed between the shell and the valve deck, the shell is provided with a first channel, and the first channel is communicated with the valve deck. A first connecting channel is arranged between the first end face, close to the annular wall, of the shell and the coil fixing base, the coil fixing base is provided with a second channel, the first sleeve is provided with a third channel, the first end of the first channel is communicated with the containing cavity, the second end of the first channel is communicated with the first connecting channel, and the first end of the second channel is communicated with the first connecting channel. The second end of the second channel is communicated with the first end of the third channel, the second end of the third channel is communicated with the outside of the first sleeve, and the damper mechanism can effectively exhaust gas in the containing cavity, is easy to manufacture and install and has good consistency.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a damper mechanism and a shock absorber. BACKGROUND

[0002] With the rapid development of the automobile industry, people have higher and higher requirements for the comfort of automobiles. The shock absorber in the automobile suspension system can reduce the vibration of the vehicle frame and body to improve the smoothness of the automobile. For example, for a hydraulic cylinder shock absorber, when the vehicle frame and axle move relatively due to vibration, the piston rod in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly flows from one chamber to another, thereby converting the kinetic energy generated by the relative movement between the piston rod assembly and the cylinder assembly of the shock absorber into heat energy of the oil and dissipating it outward, thereby playing a damping role. In order to better adapt to different driving environments, it is crucial to improve the operating performance of the automobile shock absorber. SUMMARY

[0003] The embodiments of the present disclosure provide a damper mechanism and a shock absorber.

[0004] At least one embodiment of the present disclosure provides a damper mechanism, which comprises a first sleeve, a coil fixing seat and an electromagnetic valve control part located in the first sleeve, the first sleeve comprises a first opening and an annular wall located opposite to the first opening, the electromagnetic valve control part is located on the side of the coil fixing seat close to the first opening and comprises a shell, a valve cover and a valve armature, the shell is located on the side of the valve cover facing the annular wall, the shell and the valve cover have a containing cavity therebetween, the valve armature is arranged in the containing cavity and is configured to reciprocate in the containing cavity along a first direction, the first direction being an axial direction of the first sleeve, wherein the shell has a first channel, the first end face of the shell close to the annular wall and the coil fixing seat have a first connecting channel therebetween, the coil fixing seat has a second channel, the first sleeve has a third channel, the first end of the first channel is in communication with the containing cavity, the second end of the first channel is in communication with the first connecting channel, the first end of the second channel is in communication with the first connecting channel, the second end of the second channel is in communication with the first end of the third channel, and the second end of the third channel is in communication with the outside of the first sleeve.

[0005] For example, the damper mechanism provided by at least one embodiment of the present disclosure further comprises a second sleeve and a valve core assembly chamber, the second sleeve comprises a second opening and a third opening arranged oppositely, the second opening of the second sleeve and a part close to the second opening extend into the first sleeve through the first opening; the valve core assembly chamber is located in the second sleeve; wherein the valve armature comprises a first internal passage, the first internal passage penetrates the valve armature along the first direction, the first internal passage is in communication with the accommodating cavity, the valve cover comprises a second internal passage, the accommodating cavity is in communication with the valve core assembly chamber through the second internal passage.

[0006] For example, the damper mechanism provided by at least one embodiment of the present disclosure, the first passage is located on one side of the first connecting passage close to the valve armature in the first direction, the second passage is located on one side of the first connecting passage close to the third passage in the second direction, the first passage extends along the first direction, and the second passage and the third passage both extend along the second direction, the second direction being the radial direction of the first sleeve.

[0007] For example, the damper mechanism provided by at least one embodiment of the present disclosure, in the first direction, the first end surface of the shell and the surface of the coil fixing seat facing the first end surface have a first spacing to form the first connecting passage.

[0008] For example, the damper mechanism provided by at least one embodiment of the present disclosure, at least one of the first end surface of the shell and the surface of the coil fixing seat facing the first end surface has a first groove, and the first groove serves as the first connecting passage.

[0009] For example, the damper mechanism provided by at least one embodiment of the present disclosure, the first end surface of the shell has the first groove, and the first end surface is in contact with the surface of the coil fixing seat facing the first end surface.

[0010] For example, the damper mechanism according to at least one embodiment of the present disclosure further comprises a spool assembly located in the spool assembly chamber and connected with the electromagnetic valve control portion, the electromagnetic valve control portion further comprises a rod body penetrating the valve armature, the rod body is configured to transmit an adjusting force on the valve armature to the spool assembly, an end of the accommodating cavity away from the second sleeve is provided with a guide sleeve, at least a portion of the rod body close to the annular wall is located in the guide sleeve, wherein the accommodating cavity comprises a sub-cavity between an end of the valve armature away from the valve cover and the guide sleeve, the guide sleeve and the surface of the housing facing each other have a second connecting channel, and the sub-cavity communicates with the first channel through the second connecting channel.

[0011] For example, the damper mechanism according to at least one embodiment of the present disclosure, the second connecting channel comprises a second groove and a third groove, the second groove is located on at least one of the outer side wall of the guide sleeve and the surface of the housing facing the outer side wall, the second groove communicates with the sub-cavity, the third groove is located on at least one of the surface of the guide sleeve and the surface of the housing facing each other in the first direction, the third groove communicates with the second groove, and the third groove communicates with the first channel.

[0012] For example, the damper mechanism according to at least one embodiment of the present disclosure, at least one of the outer side wall of the guide sleeve and the surface of the housing facing the outer side wall has a second groove, the second groove communicates with the sub-cavity, and the side wall of the guide sleeve has at least one through hole communicating with the second groove.

[0013] For example, the damper mechanism according to at least one embodiment of the present disclosure, in the first direction, the surface of the guide sleeve facing the housing in the first direction is in contact with the housing.

[0014] For example, the damper mechanism according to at least one embodiment of the present disclosure, at least one of the outer side wall of the guide sleeve and the surface of the housing facing the outer side wall has a second groove, the second groove communicates with the sub-cavity, and the second end surface of the guide sleeve close to the annular wall has a second spacing with the surface of the housing facing the second end surface, so that the second groove communicates with the first channel.

[0015] For example, the damper mechanism according to at least one embodiment of the present disclosure, the center axis of the first channel coincides with the center axis of the housing.

[0016] For example, the damper mechanism provided by at least one embodiment of the present disclosure has a receiving cavity, which comprises a sub-cavity between an end of the valve armature away from the valve cover and the guide sleeve, and the first channel directly communicates with the sub-cavity.

[0017] For example, the damper mechanism provided by at least one embodiment of the present disclosure has the first channel between the central axis of the housing and the second channel in the second direction.

[0018] For example, the damper mechanism provided by at least one embodiment of the present disclosure has a first sealing ring between an outer side wall of the housing away from the valve armature and the coil fixing seat, a second sealing ring and a third sealing ring between an outer side wall of the coil fixing seat and the first sleeve, the first sealing ring, the second sealing ring and the third sealing ring all surround the central axis of the housing, and the second sealing ring and the third sealing ring are respectively located on two sides of the second channel in the first direction.

[0019] For example, the damper mechanism provided by at least one embodiment of the present disclosure has a retraction part in the channel through which the first channel, the first connecting channel, the second channel and the third channel are sequentially communicated, and any one of the flow cross-sectional area of the first channel, the flow cross-sectional area of the first connecting channel, the flow cross-sectional area of the second channel and the flow cross-sectional area of the third channel is greater than the flow cross-sectional area of the retraction part.

[0020] For example, the damper mechanism provided by at least one embodiment of the present disclosure has an inner diameter of the retraction part of 0.25mm-0.35mm.

[0021] For example, the damper mechanism provided by at least one embodiment of the present disclosure has the retraction part between the first connecting channel and the second channel, one end of the retraction part communicates with the first connecting channel, and the other end of the retraction part communicates with the first end of the second channel.

[0022] For example, the damper mechanism provided by at least one embodiment of the present disclosure has a plurality of the first channels communicating with the receiving cavity, and the ports of the plurality of the first channels are distributed on the first end surface of the housing.

[0023] At least one embodiment of the present disclosure also provides a shock absorber comprising the damper mechanism provided by any one of the above embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some of the embodiments of the present disclosure, but not limit the present disclosure.

[0025] Figure 1 A schematic view of a damper mechanism provided for at least one embodiment of the present disclosure.

[0026] Figure 2 A partial enlarged view of the damper mechanism in Figure 1

[0027] Figure 3 Another partial enlarged view of the damper mechanism in Figure 1

[0028] Another partial structure schematic view of a damper mechanism provided for at least one embodiment of the present disclosure. Figure 4

[0029] Another partial structure schematic view of a damper mechanism provided for at least one embodiment of the present disclosure. Figure 5

[0030] Another partial structure schematic view of a damper mechanism provided for at least one embodiment of the present disclosure. Figure 6 DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, but not all the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without any creative work fall within the scope of protection of the present disclosure.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood as the usual meaning understood by those of ordinary skill in the art to which the present disclosure belongs. The terms "first", "second" and the like used in the present disclosure do not represent any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and the like mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, but do not exclude other elements or objects.

[0033] Generally, in the shock absorber of the automobile, the damper mechanism can prevent the vehicle from generating excessive swing or vibration when passing through the bumpy road, which not only can improve the driving stability and comfort of the vehicle, but also can prolong the service life of the automobile.​​

[0034] In the research, the inventors of the present application found that during the operation of the shock absorber, the damping liquid in the shock absorber cavity may foam when flowing, thereby causing the uniformity of the medium in the shock absorber cavity to be poor; at the same time, the gas generated in the shock absorber cavity may cause the gas pressure in the shock absorber cavity to suddenly increase, thereby causing the operation of the shock absorber system to be unstable. In addition, due to the complex structure of the shock absorber, in order to effectively discharge the gas in the shock absorber cavity, it has certain design and installation difficulty to provide an exhaust passage in the shock absorber, and the manufacturing cost is high.

[0035] At least one embodiment of the present disclosure provides a damper mechanism and a shock absorber.

[0036] The damper mechanism provided by the embodiments of the present disclosure comprises a first sleeve, a coil fixing seat and an electromagnetic valve control part located in the first sleeve, the first sleeve comprises a first opening and an annular wall located opposite to the first opening, the electromagnetic valve control part is located on the side of the coil fixing seat close to the first opening, and comprises a shell, a valve cover and a valve armature, the shell is located on the side of the valve cover facing the annular wall, the shell and the valve cover have a containing cavity therebetween, the valve armature is arranged in the containing cavity and is configured to reciprocate in the containing cavity along a first direction, the first direction is the axial direction of the first sleeve, wherein the shell has a first channel, the first end face of the shell close to the annular wall and the coil fixing seat have a first connecting channel therebetween, the coil fixing seat has a second channel, the first sleeve has a third channel, the first end of the first channel is in communication with the containing cavity, the second end of the first channel is in communication with the first connecting channel, the first end of the second channel is in communication with the first connecting channel, the second end of the second channel is in communication with the first end of the third channel, and the second end of the third channel is in communication with the outside of the first sleeve.

[0037] The damper mechanism provided by the embodiments of the present disclosure can discharge the gas in the containing cavity and the cavity in communication with the containing cavity through the above-mentioned channels, so as to maintain the stability of the internal gas pressure of the damper mechanism and make the uniformity of the flowing medium in the damper mechanism good; at the same time, in the damper mechanism, the first end face of the shell and the coil fixing seat have the first connecting channel therebetween, and the first channel and the second channel are in communication through the first connecting channel, so that the first channel and the second channel are easy to process, thereby reducing the manufacturing difficulty, and at the same time, the alignment accuracy between the first channel and the second channel in the installation process can be reduced to facilitate installation.

[0038] The damper mechanism provided by the embodiments of the present disclosure will be described below in combination with the drawings.

[0039] Figure 1 The schematic diagram of the damper mechanism provided by at least one embodiment of the present disclosure is shown in the figure; Figure 2 The Figure 1a partial enlarged view of the damper mechanism in the first sleeve 100; Figure 3 For Figure 1 another partial enlarged view of the damper mechanism in the first sleeve 100.

[0040] As Figure 1 shown, the damper mechanism 01 includes a first sleeve 100, a coil fixing seat 103 and an electromagnetic valve control part 104 located in the first sleeve 100. The first sleeve 100 includes a first opening 101 and an annular wall 102 located opposite to the first opening 101, and the first sleeve 100 has an internal cavity in which the coil fixing seat 103 and the electromagnetic valve control part 104 are located. The coil fixing seat 103 and the annular wall 102 are in contact with each other, and the electromagnetic valve control part 104 is located on the side of the coil fixing seat 103 close to the first opening 101 and includes a shell 1041, a valve cover 1042 and a valve armature 1043. The shell 1041 is located on the side of the valve cover 1042 facing the annular wall 102, and the shell 1041 is in contact with and connected to the valve cover 1042. There is a receiving cavity 1040 between the shell 1041 and the valve cover 1042, and the valve armature 1043 is arranged in the receiving cavity 1040, and the valve armature 1043 is configured to reciprocate in the receiving cavity 1040 along a first direction X, which is the axial direction of the first sleeve 100.

[0041] For example, as Figure 1 shown, the damper mechanism 01 further includes an electromagnetic coil 1060 located between the outer side wall of the shell 1041 and the inner side wall of the first sleeve 100, and the electromagnetic coil 1060 is located between the coil fixing seat 103 and the valve cover 1042 in the first direction X, and the electromagnetic coil 1060 is configured to drive the valve armature 1043 to reciprocate in the receiving cavity 1040 along the first direction X.

[0042] As Figure 1As shown, the housing 1041 has a first channel 110, and a first end face 1046 close to the annular wall 102, the first end face 1046 has a first connecting channel 111 between the coil fixing seat 103, the coil fixing seat 103 has a second channel 120, and the first sleeve 100 has a third channel 130. The first channel 110 penetrates the housing 1041 in the first direction X, thereby enabling the accommodation cavity 1040 to communicate with the outside of the housing 1041 through the first channel 110. For example, the first connecting channel 111 can have various design forms according to design requirements (see the relevant description of the following embodiments), such as being provided with a groove on the first end face 1046 of the housing 1041, but is not limited thereto. For example, the second channel 120 penetrates the coil fixing seat 103 in the radial direction, the third channel 130 penetrates the side wall of the first sleeve 100, and the second channel 120 and the third channel 130 communicate, thereby enabling the first connecting channel 111 to communicate with the outside of the first sleeve 100.

[0043] As shown in Figure 2 , the first end 1101 of the first channel 110 communicates with the accommodation cavity 1040, the second end 1102 of the first channel 110 communicates with the first connecting channel 111, the first end 1201 of the second channel 120 communicates with the first connecting channel 111, the second end 1202 of the second channel 120 communicates with the first end 1301 of the third channel 130, and the second end 1302 of the third channel 130 communicates with the outside of the first sleeve 100. Therefore, the channels communicated in sequence by the first channel 110, the first connecting channel 111, the second channel 120, and the third channel 130 can serve as the exhaust channel 123 of the damper mechanism 01.

[0044] As shown in Figure 2 , the accommodation cavity 1040 can communicate with the outside of the first sleeve 100 through the above-mentioned exhaust channel 123 (see Figure 1 ), so as to exhaust the gas in the accommodation cavity 1040 and the cavities communicating with the accommodation cavity 1040, thereby maintaining the stability of the internal gas pressure of the damper mechanism 01 and enabling the uniformity of the flow medium in the damper mechanism 01 to be good. At the same time, the first end 1101 of the first channel 110 and the second end 1202 of the second channel 120 are indirectly connected, that is, they communicate through the first connecting channel 111, so that when the coil fixing seat 103 is installed with the housing 1041, the positional accuracy between the first end 1101 of the first channel 110 and the second end 1202 of the second channel 120 can be reduced, and the installation difficulty can be reduced. In addition, since the first channel 110 does not need to be directly matched with the second channel 120, the positions and structural forms of the first channel 110 and the second channel 120 can be flexibly selected according to manufacturing convenience, thereby reducing the manufacturing difficulty and facilitating processing.

[0045] For example, Figure 1 As shown, the damper mechanism 01 further includes a second sleeve 200 and a valve core assembly chamber 300 located within the second sleeve 200. The second sleeve 200 includes a second opening 202 and a third opening 203 that are oppositely disposed. The second opening 202 of the second sleeve 200 and a portion adjacent to the second opening 202 extend through the first opening 101 into the first sleeve 100.

[0046] For example, Figure 1 As shown, the first opening 101 can be an opening surrounded by the end of the first sleeve 100 away from the annular wall 102. For example, the annular wall 102 can be annular in plan view. For example, the first opening 101 can be circular, and the annular wall 102 can be annular in plan view. For example, the central axis of the annular wall 102 coincides with the central axis L of the housing 1041.

[0047] For example, Figure 1 As shown, the second opening 202 may be an opening surrounded by the end of the second sleeve 200 facing the annular wall 102 of the first sleeve 100 , and the third opening 203 may be an opening surrounded by the end of the second sleeve 200 away from the annular wall 102 of the first sleeve 100 .

[0048] For example, Figure 1 As shown, the inner diameter of the second opening 202 is smaller than the inner diameter of the first opening 101. For example, the second opening 202 of the second sleeve 200 can extend into the barrel cavity between the first opening 101 and the annular wall 102 of the first sleeve 100. For example, a portion of the second sleeve 200 is inserted into the barrel cavity of the first sleeve 100, while another portion of the second sleeve 200 is located outside the barrel cavity of the first sleeve 100. For example, the third opening 203 of the second sleeve 200 and the portion adjacent to the third opening 203 are located outside the first sleeve 100.

[0049] For example, Figure 1 As shown, a portion of the solenoid valve control part 104 close to the annular wall 102 is located inside the first sleeve 100 and outside the second sleeve 200, and a portion of the solenoid valve control part 104 away from the annular wall 102 (for example, the valve cover 1042) is located in the first sleeve 100 and also inside the second sleeve 200.

[0050] For example, Figure 1As shown, the valve armature 1043 includes a first internal passage 1030 that extends through the valve armature 1043 along a first direction X and communicates with the accommodating chamber 1040. For example, in the first direction X, portions of the accommodating chamber 1040 located on both sides of the valve armature 1043 communicate through the first internal passage 1030, thereby enabling communication with the exterior of the first sleeve 100 via the exhaust passage 123. For example, the valve cover 1042 includes a second internal passage 1045, through which the accommodating chamber 1040 communicates with the valve core assembly chamber 300. For example, the valve core assembly chamber 300 is located on the side of the valve cover 1042 away from the accommodating chamber 1040, and the second internal channel 1045 penetrates the valve cover 1042 in the first direction X, so that the gas in the valve core assembly chamber 300 can flow into the accommodating chamber 1040 through the second internal channel 1045, and then be discharged through the exhaust channel 123.

[0051] For example, Figure 1 As shown, the first channel 110 is located on a side of the first connecting channel 111 close to the valve armature 1043 in the first direction X, and the first channel 110 extends along the first direction X, so that the first channel 110 can be arranged on a portion of the housing 1041 close to the coil fixing seat 103, thereby reducing the difficulty of manufacturing the first channel 110, and the second end 1102 of the first channel 110 (see Figure 2 ) is easily connected to the first connecting channel 111, thereby reducing the difficulty of assembling between the shell 1041 and the coil fixing seat 103.

[0052] For example, Figure 1 As shown, the second channel 120 is located on a side of the first connecting channel 111 near the third channel 130 in the second direction Y, and both the second channel 120 and the third channel 130 extend along the second direction Y, which is the radial direction of the first sleeve 100. This arrangement allows the second channel 120 and the third channel 130 to be smaller in their respective extension directions, thereby reducing the difficulty in manufacturing the second channel 120 and the third channel 130. Furthermore, because the second channel 120 and the third channel 130 extend in the same direction, the installation of the coil holder 103 and the first sleeve 100 is simplified, facilitating assembly.

[0053] For example, Figure 1 As shown, the central axis of the first channel 110 coincides with the central axis L of the housing 1041. For example, the central axis L of the housing 1041 can serve as the central axis of symmetry of the housing 1041. The first channel 110 extends along the first direction X and is disposed in the middle of the housing 1041. Thus, the gas in the accommodating chamber 1040 can easily enter the first channel 110 and then be discharged to the outside of the first sleeve 100.

[0054] In some embodiments, referring to Figure 2 , the shell 1041 can be provided with a plurality of first channels 110 in communication with the accommodating cavity 1040, and the ports of the plurality of first channels 110 are spaced apart on the first end surface 1046 of the shell 1041. For example, the plurality of first channels 110 are arranged in a circle with the center axis L as the center, so as to improve the exhaust efficiency while ensuring that the shell 1041 has good structural strength. For example, the number of first channels 110 in the shell 1041 and the inner diameter of each first channel 110 can be set according to actual design requirements, and the embodiments of the present disclosure are not limited thereto.

[0055] In some embodiments, referring to Figure 2 , the coil fixing seat 103 can be provided with a plurality of second channels 120, and the first sleeve 100 can be provided with a plurality of third channels 130, and the plurality of second channels 120 and the plurality of third channels 130 are one-to-one corresponding, thereby further improving the exhaust efficiency, and the number of second channels 120 and third channels 130 is not limited by the embodiments of the present disclosure.

[0056] For example, as shown in Figure 2 , in the first direction X, the shell 1041 has a first end surface 1046 close to the annular wall 102, the coil fixing seat 103 has a surface 1110 facing the first end surface 1046 of the shell 1041, and the first end surface 1046 of the shell 1041 and the surface 1110 of the coil fixing seat 103 have a first spacing K1 to form a first connecting channel 111. For example, the side of the coil fixing seat 103 facing the valve armature 1043 has a receiving cavity, and the end of the shell 1041 away from the valve armature 1043 is located in the receiving cavity, and in the first direction X, the size of the end of the shell 1041 is smaller than the size of the above-mentioned receiving cavity of the coil fixing seat 103, thereby forming the first spacing K1. For example, the cavity between the first end surface 1046 of the shell 1041 and the surface 1110 of the coil fixing seat 103 serves as the first connecting channel 111, and therefore, the first connecting channel 111 has a larger capacity space, so that the flow rate of the gas flowing from the first channel 110 can be buffered to some extent, thereby facilitating the protection of the device structure.

[0057] For example, as shown in Figure 2 , in the first direction X, the first spacing K1 can be 0.8mm-1.2mm, such as 0.9mm, 1.0mm or 1.1mm, and the embodiments of the present disclosure are not limited thereto.

[0058] In some embodiments, referring to Figure 2At least one of the first end surface 1046 of the housing 1041 and the surface 1110 of the coil holder 103 has a first groove, which serves as the first connecting channel 111. For example, the first groove extends in the radial direction of the housing 1041 (i.e., the second direction Y), and the first channel 110 and the second channel 120 are respectively connected to the first groove.

[0059] In some embodiments, reference Figure 2 The first end surface 1046 of the housing 1041 can contact the surface 1110 of the coil holder 103. For example, the first groove can be provided on the first end surface 1046 of the housing 1041, and the first channel 110 can be directly connected to the first groove. In other words, the first connecting channel 111 and the first channel 110 are both formed on the housing 1041. This eliminates the need to align the first channel 110 with the first connecting channel 111 during installation, thereby simplifying the installation process.

[0060] In some embodiments, reference Figure 2 Alternatively, the first groove may be formed on the surface 1110 of the coil holder 103, with the second channel 120 directly communicating with the first groove. In other words, the first connecting channel 111 and the second channel 120 are both formed on the coil holder 103, thereby eliminating the need to align the second channel 120 with the first connecting channel 111 during installation, thereby simplifying the installation process.

[0061] For example, Figure 1 As shown, the damper mechanism 01 further includes a valve core assembly 400, which is located within the valve core assembly chamber 300 and is connected to the solenoid valve control unit 104. For example, the solenoid valve control unit 104 further includes a rod 500 that extends through the valve armature 1043. The rod 500 is configured to transmit the regulating force on the valve armature 1043 to the valve core assembly 400. For example, the damper mechanism 01 further includes a movable valve core 800 and a movable valve stopper 880. One end of the valve core assembly 400 abuts against the movable valve core 800. For example, the movable valve core 800 has a third internal passage 850. When the rod 500 moves toward a side away from the movable valve core 800, the distance between the movable valve core 800 and the movable valve stopper 880 increases, thereby allowing the third internal passage 850 to communicate with the discharge passage 900 of the second sleeve 200. This allows the damping fluid in the valve core assembly chamber 300 to be discharged to the outside of the second sleeve 200 through the third internal passage 850. For example, when the rod 500 moves toward a side closer to the movable valve core 800, the distance between the movable valve core 800 and the movable valve stopper 880 decreases, thereby reducing the flow rate of the damping fluid flowing from the third internal passage 850 to the discharge passage 900.

[0062] For example, Figure 1As shown, a guide sleeve 550 is provided at one end of the accommodating cavity 1040 away from the second sleeve 200, and at least a portion of the rod body 500 adjacent to the annular wall 102 is located in the guide sleeve 550. For example, the guide sleeve 550 can provide guidance for the movement of the rod body 500, for example, allowing it to move along the first direction X, thereby making its movement state more stable.

[0063] For example, Figure 3 As shown, the accommodating chamber 1040 includes a sub-chamber 1047, which is located between the end of the valve armature 1043 away from the valve cover 1042 and the guide sleeve 550. For example, the sub-chamber 1047 is directly connected to the first internal channel 1030, and a second connecting channel 5500 is provided between the facing surfaces of the guide sleeve 550 and the housing 1041. The sub-chamber 1047 is connected to the first channel 110 through the second connecting channel 5500. For example, Figure 1 and Figure 3 As shown, the gas in the first internal channel 1030 can flow into the sub-cavity 1047 , then enter the second connecting channel 5500 , and then be discharged to the outside of the first sleeve 100 .

[0064] For example, in some embodiments of the present disclosure, the second connecting channel between the guide sleeve and the housing may have different structural forms to adapt to different design requirements.

[0065] In some embodiments, as Figure 3 As shown, the second connecting channel 5500 includes a second groove 5502 and a third groove 5503. The second groove 5502 is located on at least one of the outer wall of the guide sleeve 550 and the surface of the housing 1041 facing the outer wall. The second groove 5502 is connected to the sub-cavity 1047. For example, the outer wall of the guide sleeve 550 is the side wall away from the rod body 500. The second groove 5502 can be provided on the outer wall of the guide sleeve 550, and the second groove 5502 extends along the first direction X. This helps to simplify the flow path of the airflow, allowing the gas in the sub-cavity 1047 to easily flow into the first channel 110.

[0066] In some embodiments, as Figure 3 As shown, the third groove 5503 is located on at least one of the surfaces of the guide sleeve 550 and the housing 1041 facing each other in the first direction X. The third groove 5503 is connected to the second groove 5502, and the third groove 5503 is connected to the first channel 110. In some examples, the guide sleeve 550 has a second end surface 5551 facing the housing 1041 in the first direction X, and the second end surface 5551 is an annular surface. The third groove 5503 is provided on this annular surface, thereby allowing the gas in the second groove 5502 to flow into the third groove 5503, then enter the first channel 110, and then be discharged.

[0067] In some embodiments, as shown in Figure 3 , the shell 1041 has a surface 1004 facing the guide sleeve 550 in the first direction X, and the second end surface 5551 of the guide sleeve 550 is in contact with the surface 1004 of the shell 1041. Thus, the shell 1041 can provide a supporting force for the guide sleeve 550 in the first direction X to reduce the risk of the guide sleeve 550 sliding in the first direction X.

[0068] For example, as shown in Figure 3 , when the second groove 5502 and the third groove 5503 are both arranged on the guide sleeve 550, the machining difficulty of the shell 1041 can be reduced, and the second groove 5502 and the third groove 5503 are easy to manufacture and have high control precision.

[0069] In some embodiments, referring to Figure 3 , the second groove 5502 can also be arranged on the surface of the shell 1041 facing the outer side wall of the guide sleeve 550, and the third groove 5503 can also be arranged on the surface of the shell 1041 facing the guide sleeve 550 in the first direction X. The embodiments of the present disclosure do not limit the positions of the second groove 5502 and the third groove 5503.

[0070] Figure 4 Another partial structure schematic diagram of a damper mechanism provided by at least one embodiment of the present disclosure.

[0071] For example, as shown in Figure 4 , compared with the damper mechanism 01 in Figure 1 , the difference between the damper mechanism 02 is that the structure of the second connecting channel 5500 is different, and the rest of the structure can be referred to the related description in the above embodiments, which will not be repeated here.

[0072] For example, as shown in Figure 4 , at least one of the outer side wall of the guide sleeve 550 and the surface of the shell 1041 facing the outer side wall has a second groove 5502, and the second groove 5502 is in communication with the sub-cavity 1047. For example, the second groove 5502 can be arranged on the outer side wall of the guide sleeve 550, or arranged on the surface of the shell 1041 facing the outer side wall of the guide sleeve 550. The embodiments of the present disclosure do not limit this, and the arrangement form of the second groove 5502 can be referred to the related description of the above embodiments about Figure 3 .

[0073] For example, as shown in Figure 4 , the side wall of the guide sleeve 550 has at least one through hole 5504, and the through hole 5504 is in communication with the second groove 5502. For example, when the rod body 500 is located Figure 4In the position shown, one end of the through hole 5504 is in communication with the second groove 5502, and the other end of the through hole 5504 is in communication with the first channel 110. For example, in the first direction X, the through hole 5504 is located on the sidewall of the middle portion of the guide sleeve 550, away from the valve armature 1043, to facilitate the flow of gas from the through hole 5504 into the first channel 110. For example, the number of through holes 5504 in the guide sleeve 550 can be 2 to 5, and this is not limited in the embodiments of the present disclosure.

[0074] like Figure 4 As shown, by setting a plurality of through holes 5504 on the side wall of the guide sleeve 550, the second end face 5551 of the guide sleeve 550 can be made smooth while meeting the exhaust requirements. When the second end face 5551 is attached to the surface 1004 of the shell 1041, it is conducive to the stable setting of the guide sleeve 550.

[0075] Figure 5 A schematic diagram of the partial structure of yet another damper mechanism provided for at least one embodiment of the present disclosure.

[0076] For example, Figure 5 As shown, Figure 1 Compared with the damper mechanism 01 in the embodiment, the difference between the damper mechanism 03 and the damper mechanism 01 is that the structure of the second connecting channel 5500 is different. For the remaining structures, please refer to the relevant description in the above embodiment and will not be repeated again.

[0077] For example, Figure 5 As shown, at least one of the outer wall of the guide sleeve 550 and the surface of the shell 1041 facing the outer wall has a second groove 5502, and the second groove 5502 is connected to the sub-cavity 1047. For example, the second groove 5502 can be set on the outer wall of the guide sleeve 550, or on the surface of the outer wall of the shell 1041 facing the guide sleeve 550. The embodiments of the present disclosure are not limited to this. For the arrangement of the second groove 5502, please refer to the above embodiment. Figure 3 Related instructions.

[0078] For example, Figure 5 As shown, the guide sleeve 550 has a shape close to the annular wall 102 (see Figure 1), the shell 1041 has a second end face 5551 facing the second end face 5551, and a second spacing K2 is provided between the second end face 5551 of the guide sleeve 550 and the surface 1004 of the shell 1041, so that the second groove 5502 is connected to the first channel 110. For example, the outer wall of the guide sleeve 550 is tightly fitted with the shell 1041, thereby reducing the risk of the guide sleeve 550 sliding in the first direction X. For example, the second spacing K2 can be 0.8mm to 1.2mm, such as 0.9mm, 1.0mm or 1.1mm, and the embodiments of the present disclosure are not limited to this. With such a configuration, the size of the guide sleeve 550 in the first direction X can be smaller while meeting the exhaust requirements, which is conducive to simplifying the structure of the guide sleeve 550.

[0079] Figure 6 A schematic diagram of the partial structure of yet another damper mechanism provided for at least one embodiment of the present disclosure.

[0080] For example, Figure 6 As shown, Figure 1 Compared with the damper mechanism 01 in the embodiment, the difference between the damper mechanism 04 and the damper mechanism 01 is that the structure of the first channel 110 is different. For the remaining structures, please refer to the relevant description in the above embodiment and will not be repeated here.

[0081] For example, Figure 6 As shown, the accommodating chamber 1040 includes a sub-cavity 1047, which is located away from the valve cover 1042 (see Figure 1 ) and the housing 1041, the first channel 110 is directly connected to the sub-cavity 1047. For example, the first channel 110 extends along the first direction X, the first end 1101 of the first channel 110 is connected to the sub-cavity 1047, and the second end 1102 of the first channel 110 is connected to the first connecting channel 111. As a result, the gas in the sub-cavity 1047 can flow into the first connecting channel 111 through the first channel 110, which is conducive to improving the exhaust efficiency and making the housing 1041 easier to manufacture.

[0082] For example, Figure 6 As shown, in the second direction Y, the first channel 110 is located between the central axis L of the housing 1041 and the second channel 120. This reduces the distance between the first channel 110 and the second channel 120, making it easier for gas to flow from the first channel 110 through the first connecting channel 111 into the second channel 120, thereby improving exhaust efficiency. In some embodiments, a plurality of first channels 110 may be provided, for example, two, but this is not limited in the present disclosure.

[0083] For example, Figure 1As shown, a first sealing ring 710 is disposed between the outer wall of the housing 1041 parallel to the first direction X and the coil holder 103. The first sealing ring 710 surrounds the central axis L of the housing 1041. For example, the outer wall of the housing 1041 parallel to the first direction X may have a first receiving groove, and the first sealing ring 710 may be disposed in the first receiving groove, but the present disclosure is not limited thereto. For example, in some examples, the first receiving groove may also be disposed on the inner wall of the coil holder 103, but this is not limited in the present disclosure.

[0084] For example, Figure 1 As shown, the first sealing ring 710 can enhance the sealing performance between the housing 1041 and the coil fixing seat 103 , thereby reducing the risk of the damping fluid flowing out of the first connecting channel 111 leaking into devices such as the electromagnetic coil 1060 .

[0085] For example, Figure 1 As shown, a second sealing ring 720 and a third sealing ring 730 are provided between the outer wall of the coil fixing seat 103 facing the first sleeve 100 and the first sleeve 100, and the second sealing ring 720 and the third sealing ring 730 both surround the central axis L of the housing 1041, and the second sealing ring 720 and the third sealing ring 730 are respectively located on both sides of the second channel 120 in the first direction X. For example, Figure 1 As shown, the outer wall of the coil holder 103 facing the first sleeve 100 may be provided with a second receiving groove and a third receiving groove. The second sealing ring 720 may be provided in the second receiving groove, and the third sealing ring 730 may be provided in the third receiving groove. For example, in some examples, the second receiving groove and the third receiving groove may also be provided on the inner wall of the first sleeve 100, but the embodiments of the present disclosure are not limited to this.

[0086] For example, Figure 1 As shown, the second sealing ring 720 and the third sealing ring 730 can enhance the sealing performance between the coil fixing seat 103 and the first sleeve 100 to reduce the risk of the damping fluid flowing out of the second channel 120 leaking into devices such as the electromagnetic coil 1060, thereby enabling the damper mechanism 01 to have good operating performance.

[0087] For example, Figure 2 As shown, the channels (i.e. Figure 1The exhaust passage 123 in the damping mechanism 100 further comprises a constriction 121, and any one of the flow cross-sectional area of the first passage 110, the flow cross-sectional area of the first connecting passage 111, the flow cross-sectional area of the second passage 120 and the flow cross-sectional area of the third passage 130 is greater than the flow cross-sectional area of the constriction 121. For example, the constriction 121 can play a throttling role to control the excessive damping liquid and excessive gas to be discharged through the exhaust passage 123, so as to reduce the risk of pressure drop in the accommodating cavity 1040.

[0088] For example, as shown in Figure 2 , the constriction 121 can be located between the first connecting passage 111 and the second passage 120, one end of the constriction 121 communicates with the first connecting passage 111, and the other end of the constriction 121 communicates with the first end 1201 of the second passage 120. For example, when more damping liquid flows into the first connecting passage 111, the flow cross-sectional area of the constriction 121 is small, so that the excessive damping liquid can be prevented from being discharged through the exhaust passage 123 (see Figure 1 ), so as to maintain the pressure in the accommodating cavity 1040 stable.

[0089] In some embodiments, referring to Figure 2 , the constriction 121 can also be arranged between the second passage 120 and the third passage 130, and the constriction 121 can be arranged near the second end 1202 of the second passage 120, so as to simplify the manufacturing process.

[0090] For example, as shown in Figure 2 , the inner diameter of the constriction 121 can be 1 / 7-1 / 4, such as 1 / 6-1 / 4, 1 / 5-1 / 4 or 1 / 4-1 / 3, of the inner diameter of any one of the first passage 110, the second passage 120 and the third passage 130, but not limited thereto. For example, the inner diameter of the constriction 121 can be 0.25mm-0.35mm, such as 0.25mm, 0.30mm or 0.35mm, and the embodiments of the present disclosure are not limited thereto. In some embodiments, a plurality of constrictions 121, such as two, can be arranged at different positions of the exhaust passage 123, so as to enhance the reliability of the damper mechanism, and the embodiments of the present disclosure are not limited to the number of constrictions 121.

[0091] In this way, the flow of the gas and the damping liquid discharged through the exhaust passage can be within a reasonable range while meeting the exhaust demand, so as to ensure that the pressure in the accommodating cavity is within a suitable range, thereby reducing the risk of pressure drop.

[0092] At least one embodiment of the present disclosure further provides a shock absorber comprising the damper mechanism in any one of the above embodiments. Therefore, the technical effects of the above damper mechanism can also be embodied in the shock absorber, which will not be described here.

[0093] The following needs to be explained:

[0094] (1) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can be referred to the general design.

[0095] (2) In the case of no conflict, the features in the same embodiment and different embodiments of the present disclosure can be combined with each other.

[0096] The above only describes the exemplary embodiments of the present disclosure, and is not used to limit the protection scope of the present disclosure, and the protection scope of the present disclosure is determined by the appended claims.

Claims

1. A damper mechanism, comprising a first sleeve, a coil fixing seat and a solenoid valve control unit located within the first sleeve, the first sleeve comprising a first opening and an annular wall disposed opposite the first opening, the solenoid valve control unit being located on a side of the coil fixing seat adjacent to the first opening and comprising a housing, a valve cover, and a valve armature, the housing being located on a side of the valve cover facing the annular wall, a housing chamber being defined between the housing and the valve cover, the valve armature being disposed in the housing chamber and configured to reciprocate in the housing chamber along a first direction, the first direction being an axial direction of the first sleeve. in, The housing has a first channel, a first connecting channel is provided between the first end surface of the housing close to the annular wall and the coil fixing seat, the coil fixing seat has a second channel, and the first sleeve has a third channel. The first end of the first channel is connected to the accommodating cavity, the second end of the first channel is connected to the first connecting channel, the first end of the second channel is connected to the first connecting channel, the second end of the second channel is connected to the first end of the third channel, and the second end of the third channel is connected to the outside of the first sleeve.

2. The damper structure according to claim 1, further comprising: a second sleeve comprising a second opening and a third opening oppositely disposed, wherein the second opening of the second sleeve and a portion adjacent to the second opening extend into the first sleeve through the first opening; as well as a valve core assembly chamber located in the second sleeve; Wherein, the valve armature includes a first internal channel, the first internal channel passes through the valve armature along the first direction, the first internal channel is connected to the accommodating chamber, and the valve cover includes a second internal channel, the accommodating chamber is connected to the valve core assembly chamber through the second internal channel.

3. The damper structure according to claim 1, wherein: The first channel is located on a side of the first connecting channel close to the valve armature in the first direction, and the second channel is located on a side of the first connecting channel close to the third channel in the second direction. The first channel extends along the first direction, and the second channel and the third channel both extend along the second direction, where the second direction is a radial direction of the first sleeve.

4. The damper structure according to any one of claims 1 to 3, wherein: In the first direction, a first distance exists between the first end surface of the housing and a surface of the coil fixing seat facing the first end surface, so as to form the first connecting channel.

5. The damper structure according to any one of claims 1 to 3, wherein: At least one of the first end surface of the housing and a surface of the coil fixing seat facing the first end surface has a first groove, and the first groove serves as the first connecting channel.

6. The damper structure according to claim 5, wherein: The first end surface of the housing has the first groove, and the first end surface contacts a surface of the coil fixing seat facing the first end surface.

7. The damper structure according to claim 2, further comprising a valve core assembly, wherein the valve core assembly is located in the valve core assembly chamber and is connected to the solenoid valve control unit, the solenoid valve control unit further comprising a rod body penetrating the valve armature, the rod body being configured to transmit the regulating force on the valve armature to the valve core assembly, a guide sleeve being provided at one end of the accommodating chamber away from the second sleeve, and at least a portion of the rod body close to the annular wall being located in the guide sleeve, in, The accommodating cavity includes a sub-cavity, and the sub-cavity is located between the end of the valve armature away from the valve cover and the guide sleeve. A second connecting channel is defined between the guide sleeve and the facing surfaces of the housing, and the sub-cavity is connected to the first channel via the second connecting channel.

8. The damper structure according to claim 7, wherein: The second connecting channel includes a second groove and a third groove, the second groove is located on at least one of the outer wall of the guide sleeve and the surface of the shell facing the outer wall, and the second groove is communicated with the sub-cavity. The third groove is located on at least one of surfaces of the guide sleeve and the housing facing each other in the first direction, the third groove is communicated with the second groove, and the third groove is communicated with the first channel.

9. The damper structure according to claim 7, wherein: At least one of the outer wall of the guide sleeve and the surface of the housing facing the outer wall has a second groove, and the second groove is communicated with the sub-cavity. The side wall of the guide sleeve has at least one through hole, and the through hole is communicated with the second groove.

10. The damper structure according to claim 8 or 9, wherein: In the first direction, a surface of the guide sleeve facing the housing in the first direction is in contact with the housing.

11. The damper structure according to claim 7, wherein: At least one of the outer wall of the guide sleeve and the surface of the housing facing the outer wall has a second groove, and the second groove is communicated with the sub-cavity. A second distance is provided between a second end surface of the guide sleeve close to the annular wall and a surface of the housing facing the second end surface, so that the second groove is communicated with the first channel.

12. The damper structure according to any one of claims 1 to 3, wherein: The central axis of the first channel coincides with the central axis of the housing.

13. The damper structure according to claim 3, wherein: The accommodating cavity includes a sub-cavity, and the sub-cavity is located between the end of the valve armature away from the valve cover and the guide sleeve. The first channel is directly connected to the sub-cavity.

14. The damper structure according to claim 13, wherein: In the second direction, the first channel is located between the central axis of the housing and the second channel.

15. The damper structure according to claim 1-3, wherein: A first sealing ring is provided between the outer side wall of the housing away from the valve armature and the coil fixing seat, and a second sealing ring and a third sealing ring are provided between the outer side wall of the coil fixing seat and the first sleeve. The first sealing ring, the second sealing ring and the third sealing ring all surround the central axis of the housing, and the second sealing ring and the third sealing ring are respectively located on both sides of the second channel in the first direction.

16. The damper structure according to claim 1-3, wherein: The channels connected in sequence by the first channel, the first connecting channel, the second channel and the third channel further include a retraction portion. Any one of the flow cross-sectional area of ​​the first channel, the flow cross-sectional area of ​​the first connecting channel, the flow cross-sectional area of ​​the second channel, and the flow cross-sectional area of ​​the third channel is larger than the flow cross-sectional area of ​​the retraction portion.

17. The damper structure according to claim 16, wherein: The inner diameter of the retraction portion is 0.25 mm to 0.35 mm.

18. The damper structure according to claim 16, wherein: The retraction portion is located between the first connecting channel and the second channel, one end of the retraction portion is communicated with the first connecting channel, and the other end of the retraction portion is communicated with the first end of the second channel.

19. The damper structure according to any one of claims 1 to 3, wherein the shell is provided with a plurality of first channels communicating with the accommodating cavity, and ports of the plurality of first channels are distributed at intervals on the first end surface of the shell.

20. A shock absorber comprising the damper mechanism according to any one of claims 1 to 19.

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