Floater assembly, valve, fuel pump and vehicle

Abstract

The invention relates to a floater assembly, a valve, a fuel pump and a vehicle, the floater assembly comprises a floater and a sealing piece, one end of the sealing piece is fixed to the floater, and the other end of the sealing piece is movably connected to the floater to be away from or close to the floater and suitable for moving along with the floater; the other end of the sealing piece is movably connected with the floater, so that the movement range of the sealing piece is limited, the sealing piece can only move in the thickness direction of the valve, and the situation that the sealing piece is pulled out or excessively deformed after multiple times of work is avoided.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a float assembly, a valve, a fuel pump, and a vehicle. Background Art

[0002] In the related art, one end of the seal is fixed to the float, and the other end is not connected to the float and moves freely, so that the seal is at risk of being pulled off after multiple operations, or there is a risk of excessive deformation that affects the sealing effect.

[0003] Combined with the characteristics of related technologies, it is deduced that the sealing components in the prior art have technical problems such as being pulled off or deformed too much, which affects the sealing effect. Summary of the invention

[0004] The embodiments of the present application provide a float assembly, a valve, a fuel pump, and a vehicle, wherein one end of a seal of the float assembly is fixed to the float and the other end is movably connected to the float, so as to at least partially solve the above technical problems.

[0005] In order to achieve the above object, according to a first aspect of the present application, a float assembly is provided, comprising:

[0006] Float; and

[0007] A sealing member, one end of which is fixed to the float;

[0008] The other end of the sealing member is movably connected to the float so as to move away from or close to the float, and is suitable for following the movement of the float.

[0009] Optionally, the sealing member is provided with a first mounting member, wherein the first mounting member is used for movably mounting the other end of the sealing member and is suitable for driving the other end of the sealing member to follow the movement of the float.

[0010] Optionally, the first mounting member is provided with a limiting portion, wherein the limiting portion is provided for movably mounting the other end of the seal and is suitable for limiting the other end of the seal to drive the other end of the seal to follow the movement of the float.

[0011] Optionally, along the height direction of the float, the limiting portion includes a first limiting portion and a second limiting portion located on both sides of the sealing member, and the one end of the sealing member is sleeved between the first limiting portion and the second limiting portion.

[0012] Optionally, the first mounting member further includes a first connecting portion, the first connecting portion is connected between the first limiting portion and the second limiting portion, and the other end of the sealing member can move along the first connecting portion in the height direction of the float.

[0013] Optionally, a second mounting member is provided on the float, and the second mounting member is suitable for fixedly mounting the one end of the sealing member.

[0014] Optionally, along the height direction of the float, the second mounting member includes a third limiting portion and a fourth limiting portion located on both sides of the sealing member, and the one end of the sealing member is sleeved between the third limiting portion and the fourth limiting portion.

[0015] Optionally, the second mounting member further includes a second connecting portion, and the second connecting portion is connected between the third limiting portion and the fourth limiting portion, so that the third limiting portion and the fourth limiting portion clamp the one end of the sealing member.

[0016] Optionally, the sealing element is elastic.

[0017] According to a second aspect of the present application, a valve is further provided, comprising a float assembly as described in any of the above embodiments.

[0018] Optionally, it further comprises a valve core assembly, the valve core assembly comprises an inner shell, the inner shell is formed with a discharge port; the float assembly is movably mounted on the inner shell to drive the sealing element to seal or open the discharge port.

[0019] Optionally, the pressure of the sealing member on the discharge port when the valve is closed is smaller than the buoyancy of the float when the valve is open.

[0020] Optionally, when the seal is in a natural state, a distance between a top surface of the seal and a top surface of the first mounting member is D, and a length of the discharge port along a thickness direction of the valve is d, wherein d / 2<D<d.

[0021] Optionally, the sealing member comprises a sealing portion adapted to seal the discharge port, and when the sealing member seals the discharge port, the sealing portion is in a straight state.

[0022] Optionally, the height of the one end of the seal is the same as the height of the other end of the seal.

[0023] Optionally, the sealing member comprises a sealing portion adapted to seal the discharge port, and when the sealing member opens the discharge port, the sealing portion is in a bent state to form a pressure relief channel.

[0024] Optionally, a height of the one end of the seal is different from a height of the other end of the seal.

[0025] According to a third aspect of the present application, a fuel pump is further provided, comprising a float assembly as described in any of the above embodiments, or a valve as described in any of the above embodiments.

[0026] According to a fourth aspect of the present application, a vehicle is further provided, comprising a float assembly as described in any one of the above embodiments, or a valve as described in any one of the above embodiments, or a fuel pump as described in any one of the above embodiments.

[0027] In the float assembly of the embodiment of the present application, one end of the seal of the float assembly is fixed to the float, and the other end is movably connected to the float; the movable range of the seal is limited by the movably connected other end to the float, so that the seal can only move along the thickness direction of the valve, thereby preventing the seal from being pulled off or deformed too much after multiple operations, thereby avoiding the failure of the sealing effect of the seal.

[0028] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0030] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0031] Figure 1 is a first cross-sectional schematic diagram of a float assembly provided in an exemplary embodiment of the present disclosure;

[0032] Figure 2 is a second cross-sectional schematic diagram of a float assembly provided in an exemplary embodiment of the present disclosure;

[0033] Figure 3 is a schematic structural diagram of a first mounting member in a float assembly provided in an exemplary embodiment of the present disclosure;

[0034] Figure 4 is a schematic structural diagram of a second mounting member in a float assembly provided in an exemplary embodiment of the present disclosure;

[0035] Figure 5 is a schematic structural diagram of a seal in a float assembly provided in an exemplary embodiment of the present disclosure;

[0036] Figure 6 is a first cross-sectional schematic diagram of a valve provided in an exemplary embodiment of the present disclosure;

[0037] Figure 7is a schematic diagram of the structure of a valve in a specific area provided in an exemplary embodiment of the present disclosure;

[0038] Figure 8 2 is a second cross-sectional schematic diagram of a valve provided in an exemplary embodiment of the present disclosure.

[0039] Description of reference numerals:

[0040] 1. Float assembly; 10. Float;

[0041] 20, sealing member; 201, one end; 202, the other end; 203, sealing portion;

[0042] 30, first mounting member; 301, first limiting portion; 302, second limiting portion; 303, first connecting portion;

[0043] 40, second mounting member; 401, third limiting portion; 402, fourth limiting portion; 403, second connecting portion;

[0044] 5. valve; 51. upper cover; 52. head valve; 53. base assembly;

[0045] 6. Valve core assembly; 61. Inner housing; 62. Discharge port;

[0046] 7. Pressure relief channel; 8. Specific area. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0048] According to the first aspect of this application, see Figure 1 and Figure 2 The float assembly 1 provided by the present disclosure includes a float 10 and a seal 20, wherein one end 201 of the seal 20 is fixed to the float 10, wherein the other end 202 of the seal 20 is movably connected to the float 10 to move away from or close to the float 10, and is suitable for following the movement of the float 10.

[0049] It is understandable that the other end 202 of the seal 20 is movably connected to the float 10 and moves with the float 10, so that the other end 202 of the seal 20 is not easily pulled off or greatly deformed.

[0050] In this embodiment, one end 201 of the two ends of the seal 20 of the float assembly 1 is fixed to the float 10, and the other end 202 is movably connected to the float 10; the movable range of the seal 20 is limited by the movably connected other end 202 to the float 10, so that the seal 20 can only move along the thickness direction of the valve 5, thereby alleviating the problem of poor sealing effect caused by the seal 20 being pulled off or deformed too much after multiple operations.

[0051] In one embodiment, see Figure 1 and Figure 2 The seal 20 is provided with a first mounting member 30 , wherein the first mounting member 30 is provided for movably mounting the other end 202 of the seal 20 and is suitable for driving the other end 202 of the seal 20 to move with the float 10 .

[0052] The first mounting member 30 may be a first buckle, and the first mounting member 30 is used to mount the other end 202 of the seal 20 on the float 10 , and the float 10 may drive the other end 202 of the seal 20 to move up and down along the height direction of the first mounting member 30 .

[0053] It can be understood that by providing the first mounting member 30, the movable installation between the seal 20 and the float 10 is achieved, and at the same time, the seal 20 is prevented from moving in a horizontal direction perpendicular to the buoyancy direction of the float 10, thereby preventing the seal 20 from being pulled off or deformed excessively after multiple operations, thereby preventing the seal 20 from failing.

[0054] In one embodiment, see Figure 3 The first mounting member 30 is provided with a limiting portion, wherein the limiting portion is provided for the other end 202 of the seal 20 to be movably mounted, and is suitable for limiting the other end 202 of the seal 20 to drive the other end 202 of the seal 20 to move with the float 10.

[0055] It can be understood that the limiting portion is used to abut against the sealing member 20 to drive the sealing member 20 to move along the height direction of the float 10, so that the sealing member 20 can be switched between sealing and opening.

[0056] In one embodiment, see Figure 3 Along the height direction of the float 10 , the limiting portion includes a first limiting portion 301 and a second limiting portion 302 located on both sides of the sealing member 20 , and one end 201 of the sealing member 20 is sleeved between the first limiting portion 301 and the second limiting portion 302 .

[0057] The first limiting portion 301 is located at an end 201 of the sealing member 20 close to the float 10 , and the first limiting portion 301 is fixedly connected to the float 10 .

[0058] The second limiting portion 302 is located at an end 201 of the sealing member 20 away from the float 10 .

[0059] It can be understood that, through the first limiting portion 301 and the second limiting portion 302 located on both sides of the seal 20 along the height direction of the float 10, when the seal 20 naturally falls to the bottom of the first mounting member 30, the other end 202 of the seal 20 is in contact with the first limiting portion 301, and when the float 10 floats up, the float 10 drives the first mounting member 30 to move upward, and the first limiting portion 301 drives the other end 202 of the seal 20 to move upward. At this time, one end 201 of the seal 20 is flush with the other end 202, so that the seal 20 moves upward as a whole in a planar state; so as to enhance the sealing effect of the seal 20.

[0060] In one embodiment, see Figure 3 The first mounting member 30 further includes a first connecting portion 303 , which is connected between the first limiting portion 301 and the second limiting portion 302 . In the height direction of the float 10 , the other end 202 of the sealing member 20 can move along the first connecting portion 303 .

[0061] It can be understood that the other end 202 of the seal 20 moves along the first connecting portion 303 of the first mounting member 30. When the seal 20 is sealing, the other end 202 of the seal 20 abuts against the first limiting portion 301. The first limiting portion 301 gives the seal 20 an upward force to achieve sealing. When the seal 20 needs to be separated from the portion to be sealed 203, the float 10 moves downward, driving the seal 20 downward. Since there is a distance between the other end 202 of the seal 20 and the second limiting portion 302 located at the top of the first mounting member 30, the second limiting portion 302 first moves downward with the float 10 until the second limiting portion 302 contacts the other end 202 of the seal 20, and then drives the other end 202 of the seal 20 to move downward together, thereby releasing the sealing effect of the seal 20.

[0062] In one embodiment, see Figure 1 and Figure 4 A second mounting member 40 is disposed on the float 10 , and the second mounting member 40 is suitable for fixing and mounting one end 201 of the sealing member 20 .

[0063] The second mounting member 40 may be a second buckle, and the sealing member 20 is fixed to the float 10 via the second buckle.

[0064] It can be understood that the second mounting member 40 is used to fix the first end 201 of the sealing member 20 to the float 10 , thereby enhancing the mounting stability between the first end 201 of the sealing member 20 and the float 10 .

[0065] In one embodiment, see Figure 4 and Figure 5 Along the height direction of the float 10 , the second mounting member 40 includes a third limiting portion 401 and a fourth limiting portion 402 located on both sides of the sealing member 20 , and one end 201 of the sealing member 20 is sleeved between the third limiting portion 401 and the fourth limiting portion 402 .

[0066] It can be understood that the second mounting member 40 is fixedly connected to the float 10 through the third limiting portion 401 located at one end 201 of the seal 20 close to the side of the float 10; at the same time, the third limiting portion 401 and the fourth limiting portion 402 are respectively engaged with the two side surfaces of the one end 201 of the seal 20 to fix the one end 201 of the seal 20, thereby improving the fixing effect of the second mounting member 40 on the seal 20.

[0067] In one embodiment, see Figure 4 and Figure 5 The second mounting member 40 further includes a second connecting portion 403 , which is connected between the third limiting portion 401 and the fourth limiting portion 402 , so that the third limiting portion 401 and the fourth limiting portion 402 clamp one end 201 of the sealing member 20 .

[0068] The length of the second connection portion 403 along the height direction of the float 10 is equal to the thickness of the one end 201 of the sealing member 20 .

[0069] It can be understood that the third limiting portion 401 and the fourth limiting portion 402 are used to clamp the one end 201 of the sealing member 20 , so as to enhance the limiting and fixing effect of the second mounting member 40 on the one end 201 of the sealing member 20 .

[0070] In one embodiment, see Figure 5 , the sealing member 20 is elastic.

[0071] It is understandable that the sealing member 20 is made elastic so as to have a better sealing effect during sealing.

[0072] According to the second aspect of the present disclosure, see Figure 6 , Figure 7 , Figure 8 , a valve 5 is provided, which includes the float assembly 1 of any of the above-mentioned embodiments.

[0073] in, Figure 7 for Figure 6 An enlarged schematic diagram of a specific area 8 in FIG.

[0074] The valve 5 further includes an upper cover 51 , a head valve 52 , and a base assembly 53 .

[0075] In one embodiment, see Figure 6 and Figure 7 , and also includes a valve core assembly 6, which includes an inner shell 61, and the inner shell 61 is formed with a discharge port 62; the float assembly 1 is movably installed on the inner shell 61 to drive the seal 20 to seal or open the discharge port 62.

[0076] The discharge port 62 is used for discharging the medium in the valve 5 .

[0077] The medium may be oil.

[0078] It can be understood that when the valve 5 is in the process of switching from opening to closing, the float 10 moves toward the side close to the discharge port 62, driving the seal 20 to move upward as a whole, so that the seal 20 is in a flat and sealed fit with the discharge port 62, thereby preventing the medium from being discharged from the discharge port 62; when the valve 5 is in the process of switching from closing to opening, the float 10 moves toward the side away from the discharge port 62, and one end 201 of the seal 20 is driven by the second mounting member 40 to move toward the side away from the discharge port 62, while the other end 202 of the seal 20 does not move, thereby causing deformation between one end 201 and the other end 202 of the seal 20, thereby forming a pressure relief channel 7 at the contact position between the seal 20 and the discharge port 62, so as to realize the opening of the valve 5.

[0079] It should be noted that when the valve 5 is opened from closed, only one end 201 of the seal 20 moves downward due to the action of the fourth limiting portion 402, and the other end 202 of the seal 20 is not squeezed by the second limiting portion 302. Therefore, the other end 202 of the seal 20 does not move.

[0080] It should be noted that when the valve 5 is opened from closed, the other end 202 of the seal 20 will naturally fall along the first connecting portion 303 due to its own gravity, and the other end 202 of the seal 20 falls until it abuts against the first limiting portion 301; thereby restoring the open state of the valve 5. At this time, one end 201 of the seal 20 is flush with the other end 202, and the seal 20 is in a straight state.

[0081] In one embodiment, the pressure of the seal 20 on the exhaust port 62 when the valve 5 is closed is smaller than the buoyancy of the float 10 when the valve 5 is open.

[0082] Among them, when the valve 5 is closed, the pressure inside the valve 5 is greater than the pressure outside the valve 5, so that the seal 20 is pressed against the discharge port 62 by the pressure inside the valve 5 and is fitted tightly. Therefore, the pressure of the seal 20 on the discharge port 62 when the valve 5 is closed refers to: the extrusion force between the seal 20 and the discharge port 62.

[0083] The buoyancy exerted on the float 10 when the valve 5 is opened refers to the buoyancy exerted on the float 10 by the oil in the valve 5 when the valve 5 is opened.

[0084] It is understandable that the pressure of the seal 20 on the discharge port 62 when the valve 5 is closed is smaller than the buoyancy of the float 10 when the valve 5 is opened, so that the valve 5 can be reopened from the closed state to the open state.

[0085] In one embodiment, see Figure 6 When the sealing member 20 is in a natural state, the distance between the top surface of the sealing member 20 and the top surface of the first mounting member 30 is D, and the length of the discharge port 62 along the thickness direction of the valve 5 is d, wherein d / 2<D<d.

[0086] Among them, the natural state refers to: when the valve 5 is opened, the other end 202 of the seal 20 naturally falls to the bottom of the first mounting member 30 due to its own gravity, and the other end 202 of the seal 20 abuts against the first limiting portion 301. At this time, the seal 20 is flatly arranged, and one end 201 is flush with the other end 202.

[0087] It can be understood that when D is less than d / 2, the reopening sensitivity of the valve 5 will be affected, resulting in a lower reopening sensitivity of the valve 5; when D is greater than d, when the float assembly 1 moves in the height direction of the valve 5, the first mounting member 30 is likely to collide with the inner shell 61, which is not only easily damaged by the collision, but also the first mounting member 30 is abutted by the inner shell 61, which limits the movement of the first mounting member 30 and the float 10 in the height direction of the valve 5, so that the seal 20 cannot seal the discharge port 62 well.

[0088] In this embodiment, by limiting the distance between the top surface of the sealing member 20 and the top surface of the first mounting member 30 to D, the length of the discharge port 62 along the thickness direction of the valve 5 is d, d / 2<D<d; so that the sealing member 20 can well seal the discharge port 62, and at the same time, improve the sensitivity of the valve 5 to reopening.

[0089] In one embodiment, the sealing member 20 includes a sealing portion 203 adapted to seal the discharge port 62 , and when the sealing member 20 seals the discharge port 62 , the sealing portion 203 is in a straight state.

[0090] The sealing portion 203 is used to fit in contact with the discharge port 62 to achieve sealing of the discharge port 62 .

[0091] It is understandable that when the seal 20 seals the discharge port 62 , the sealing portion 203 is in a straight state and fits with the discharge port 62 , thereby avoiding the formation of a gap between the discharge port 62 and the sealing portion 203 , and improving the sealing effect of the seal 20 on the discharge port 62 .

[0092] In one embodiment, the height of one end 201 of the sealing member 20 is the same as the height of the other end 202 of the sealing member 20 .

[0093] The one end 201 of the sealing member 20 and the other end 202 of the sealing member 20 are at the same height, so that the sealing member 20 is in a straight state.

[0094] It can be understood that when the valve 5 is opened, the other end 202 of the seal 20 naturally falls along the first connecting portion 303 and is at the same height as one end 201 of the seal 20; when the valve 5 is closed, one end 201 of the seal 20 and the other end 202 of the seal 20 are in a straight state and fit with the discharge port 62. By making one end 201 of the seal 20 and the other end 202 of the seal 20 at the same height, the sealing effect of the seal 20 on the discharge port 62 is improved.

[0095] In one embodiment, see Figure 7 The sealing member 20 includes a sealing portion 203 adapted to seal the discharge port 62 . When the sealing member 20 opens the discharge port 62 , the sealing portion 203 is in a bent state to form a pressure relief channel 7 .

[0096] It can be understood that when the valve 5 changes from closed to open, one end 201 of the seal 20 moves relative to the other end 202 of the seal 20 toward the side away from the exhaust port 62, so that deformation is formed between the one end 201 of the seal 20 and the other end 202 of the seal 20, so that the sealing portion 203 changes from a straight state to a bent state, and a pressure relief channel 7 is formed between the sealing portion 203 in the bent state and the exhaust port 62 to achieve the reopening of the valve 5.

[0097] In one embodiment, the height of one end 201 of the sealing member 20 is different from the height of the other end 202 of the sealing member 20 .

[0098] It can be understood that when the valve 5 changes from closed to open, one end 201 of the seal 20 moves relative to the other end 202 of the seal 20 toward the side away from the exhaust port 62, so that the height of one end 201 of the seal 20 is different from the height of the other end 202 of the seal 20, thereby causing the seal 20 to deform between the one end 201 and the other end 202, so that the valve 5 changes from a closed state to an open state.

[0099] In one embodiment, when the oil level drops rapidly during oil shaking, the float 10 will no longer be affected by the buoyancy provided by the oil. At this time, the float 10 will pull the seal 20 downward. At the same time, the seal 20 is subjected to pressure toward the discharge port 62. Since one end 201 of the seal 20 is fixedly connected and the other end 202 is movably connected, the downward pulling force of the float 10 will easily cause the seal 20 to deform.

[0100] It can be understood that, due to the fixing method in which one end 201 of the seal 20 is fixedly connected and the other end 202 is movably connected, the pulling torque of the float 10 pulling the seal 20 downward is increased, thereby increasing the pulling force value on the seal 20 near the one end 201 in the direction away from the discharge port 62, making it easier for the discharge port 62 to form a pressure relief channel 7 at this position, and the pressure relief channel 7 is used to exhaust and relieve pressure, thereby achieving rapid opening of the valve 5.

[0101] The working principle of the valve 5 provided in the present application is as follows: when the vehicle is on a bumpy road or rolls over, the valve 5 is closed to prevent the oil from flowing out of the drain port 62; when the vehicle is on a flat road, the valve 5 is opened and the oil can flow out of the drain port 62.

[0102] At the moment when the valve 5 is opened from closed, the oil pressure on the seal 20 is so strong that it is difficult for the seal 20 to detach from the discharge port 62. In the present application, one end 201 of the seal 20 is fixed to the float 10, and the other end 202 is movably connected to the float 10, so that at the moment when the valve 5 is opened from closed, one end 201 and the other end 202 of the seal 20 are relatively displaced, so that the seal 20 itself is deformed at a position corresponding to the discharge port 62. The deformation weakens the sealing effect of the seal 20 on the discharge port 62, so that the inside and outside of the valve 5 are connected, the oil pressure on the seal 20 is reduced, and the seal 20 is easily detached from the discharge port 62, so that the valve 5 is changed from a closed state to an open state, so as to realize the reopening of the valve 5.

[0103] The present application also flexibly connects the other end 202 of the seal 20 with the float 10 so that the other end 202 can move with the float 10. The flexibly connected other end 202 of the seal 20 can avoid the seal 20 from being pulled off or deformed too much, thereby avoiding failure of the seal 20 caused by the seal 20 being pulled off or deformed too much.

[0104] The working principle of valve 5 double opening is as follows:

[0105] When the float 10 floats up, it drives the seal 20 to float up synchronously, and the seal 20 contacts the discharge port 62 to perform a plane seal; when the float 10 floats down, the float 10 pulls the seal 20 down, and since one end 201 of the seal 20 is fixedly connected and the other end 202 is movably connected, the seal 20 is deformed, and a pressure relief channel 7 for exhaust is formed between the one end 201 of the seal 20 and the discharge port 62.

[0106] In the embodiment of the present application, the seal 20 is equivalent to fixing the float 10, and there is no risk of pulling off during operation. In addition, due to the installation method in which one end 201 is fixed and the other end 201 is movable, the purpose of rapid opening can be achieved by opening the air leakage hole on one side after the float 10 floats down.

[0107] According to a third aspect of the present application, a fuel pump is further provided. The fuel pump comprises the float assembly 1 according to any one of the above embodiments, or the valve 5 according to any one of the above embodiments.

[0108] According to a fourth aspect of the present disclosure, a vehicle is provided, the vehicle comprising the float assembly 1 of any of the above embodiments, or the valve 5 of any of the above embodiments, or the fuel pump of any of the above embodiments, the vehicle having all the beneficial effects of the float assembly 1 or the valve 5 of any of the embodiments, which will not be described in detail in the present disclosure.

[0109] The vehicle may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc., and the present disclosure does not make any specific limitation on this.

[0110] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0111] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0112] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0113] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A float assembly (1), characterized in that: include: Float (10); as well as A sealing member (20), one end (201) of the sealing member (20) being fixed to the float (10); The other end (202) of the sealing element (20) is movably connected to the float (10) so as to move away from or close to the float (10), and is suitable for following the movement of the float (10).

2. The float assembly (1) according to claim 1, characterized in that: The sealing member (20) is provided with a first mounting member (30), wherein the first mounting member (30) is provided for movably mounting the other end (202) of the sealing member (20) and is suitable for driving the other end (202) of the sealing member (20) to move following the movement of the float (10).

3. The float assembly (1) according to claim 2, characterized in that: The first mounting member (30) is provided with a limiting portion, wherein the limiting portion is provided for movably mounting the other end (202) of the sealing member (20) and is suitable for limiting the other end (202) of the sealing member (20) so as to drive the other end (202) of the sealing member (20) to move with the float (10).

4. The float assembly (1) according to claim 3, characterized in that: Along the height direction of the float (10), the limiting portion comprises a first limiting portion (301) and a second limiting portion (302) located on both sides of the sealing member (20), and the one end (201) of the sealing member (20) is sleeved between the first limiting portion (301) and the second limiting portion (302).

5. The float assembly (1) according to claim 4, characterized in that The first mounting member (30) further comprises a first connecting portion (303), wherein the first connecting portion (303) is connected between the first limiting portion (301) and the second limiting portion (302), and the other end (202) of the sealing member (20) can move along the first connecting portion (303) in the height direction of the float (10).

6. The float assembly (1) according to claim 1, characterized in that The float (10) is provided with a second mounting member (40), and the second mounting member (40) is suitable for fixedly mounting the one end (201) of the sealing member (20).

7. The float assembly (1) according to claim 6, characterized in that Along the height direction of the float (10), the second mounting member (40) comprises a third limiting portion (401) and a fourth limiting portion (402) located on both sides of the sealing member (20), and the one end (201) of the sealing member (20) is sleeved between the third limiting portion (401) and the fourth limiting portion (402).

8. The float assembly (1) according to claim 7, characterized in that The second mounting member (40) further comprises a second connecting portion (403), wherein the second connecting portion (403) is connected between the third limiting portion (401) and the fourth limiting portion (402), so that the third limiting portion (401) and the fourth limiting portion (402) clamp the one end (201) of the sealing member (20).

9. The float assembly (1) according to claim 1, characterized in that The sealing element (20) is elastic.

10. A valve (5), characterized in that: Comprising a float assembly (1) as claimed in any one of claims 1 to 9.

11. The valve (5) according to claim 10, characterized in that It also comprises a valve core assembly (6), the valve core assembly (6) comprising an inner shell (61), the inner shell (61) being formed with a discharge port (62); the float assembly (1) is movably mounted on the inner shell (61) to drive the sealing element (20) to seal or open the discharge port (62).

12. The valve (5) according to claim 11, characterized in that The pressure of the sealing member (20) on the discharge port (62) when the valve (5) is closed is smaller than the buoyancy of the float (10) when the valve (5) is open.

13. The valve (5) according to claim 11, characterized in that When the sealing member (20) is in a natural state, the distance between the top surface of the sealing member (20) and the top surface of the first mounting member (30) is D, and the length of the discharge port (62) along the thickness direction of the valve (5) is d, wherein d / 2<D<d.

14. The valve (5) according to claim 13, characterized in that The sealing member (20) comprises a sealing portion (203) adapted to seal the discharge port (62); when the sealing member (20) seals the discharge port (62), the sealing portion (203) is in a straight state.

15. The valve (5) according to claim 14, characterized in that The height of the one end (201) of the sealing member (20) is the same as the height of the other end (202) of the sealing member (20).

16. The valve (5) according to claim 11, characterized in that The sealing member (20) comprises a sealing portion (203) suitable for sealing the discharge port (62); when the sealing member (20) opens the discharge port (62), the sealing portion (203) is in a bent state to form a pressure relief channel (7).

17. The valve (5) according to claim 16, characterized in that The height of the one end (201) of the sealing member (20) is different from the height of the other end (202) of the sealing member (20).

18. A fuel pump, characterized in that: It comprises the float assembly (1) according to any one of claims 1 to 9, or the valve (5) according to any one of claims 10 to 17.

19. A vehicle, characterized in that: It comprises the float assembly (1) according to any one of claims 1 to 9, or the valve (5) according to any one of claims 10 to 17, or the fuel pump according to claim 18.

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