Automobile vacuum pump drainage mechanism and automobile

Abstract

The present invention discloses a drainage mechanism for an automobile vacuum pump and an automobile. The drainage mechanism for an automobile vacuum pump includes a vacuum pump, a drainer, a connecting pipe, and a push rod. The two ends of the connecting pipe are respectively connected to the air outlet of the vacuum pump and the air inlet of the drainer. The vacuum pump includes a housing, a rotor, and a driving component. The rotor and the driving component are both disposed within the housing, and the driving component is used to drive the rotor to rotate relative to the housing. A guide rod is provided at one end of the push rod, and a first spiral groove, a first groove, and a second groove are provided on the inner side wall of the rotor. The rotation of the rotor can link the guide rod to move between the first spiral groove and the first groove and the second groove, thereby linking the push rod to move in the axial direction of the rotor relative to the housing. A seal is provided at the other end of the push rod and is disposed within the cavity of the drainer. The seal is adapted to the air outlet of the drainer. The drainage mechanism for an automobile vacuum pump can effectively prevent the problem of vacuum pump failure caused by water ingress.

Description

Technical Field

[0001] The present invention relates to the field of automobiles, and in particular to an automobile vacuum pump drainage mechanism and an automobile. Background Art

[0002] The vacuum brake booster (hereafter referred to as the booster) in traditional automotive braking systems utilizes vacuum from the engine's intake system to assist braking. With the development of new energy vehicles, the intake system has been gradually eliminated, rendering the booster inoperable. Consequently, electric vacuum pumps (hereafter referred to as vacuum pumps) have emerged to provide the vacuum source for the booster. Vacuum pumps are also increasingly being used in traditional vehicles.

[0003] The lower half of a common vacuum pump structure is the motor, and the upper half is the impeller. The motor drives the impeller to rotate. When the vacuum pump is working, the gas extracted from the booster needs to be discharged from the pump body through the vacuum pump outlet. However, when the vacuum pump is not working, if the vehicle is wading through water, water may flow back into the pump through the vacuum pump outlet. In order to improve the wading ability, some vehicles will install a one-way valve 10 on the vacuum pump outlet or outlet pipe, such as Figure 1 However, after installing this one-way valve 10, the vacuum in the vacuum pump will remain for a long time. Moreover, the one-way valve 10 has a closing delay. At the moment the one-way valve 10 closes, the vacuum in the pump will still cause water to be absorbed into the pump. In addition, the long-term pressure difference between the two sides of the one-way valve 10 may cause the seal to fail. If the vehicle wades for a long distance, the pump may still absorb water through the air outlet. In addition, if the outside of the one-way valve 10 is soaked in dirty water, it may become stuck or not close tightly.

[0004] Therefore, the vacuum pump in the prior art has the problem of being unable to effectively prevent water from entering the vacuum pump, and further unable to effectively avoid the vacuum pump from malfunctioning due to water entering. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the vacuum pump cannot effectively prevent water from entering the vacuum pump, and thus cannot effectively avoid the vacuum pump from malfunctioning due to water entering.

[0006] To address the aforementioned issues, one embodiment of the present invention provides a drainage mechanism for an automotive vacuum pump, comprising a vacuum pump including a housing having a cavity formed therein, the housing being provided with an air inlet and an air outlet communicating with the cavity. The drainage mechanism also includes a drainer, a connecting pipe, and a push rod. The drainer has a cavity formed therein, and the drainer is provided with an air inlet and an air outlet communicating with the cavity within the drainer. The connecting pipe has two ends that communicate with the vacuum pump's air outlet and the drainer's air inlet, respectively.

[0007] The vacuum pump also includes a rotor and a driving component, both of which are arranged in the cavity of the shell, and the driving component is used to drive the rotor to rotate relative to the shell. A guide rod is provided at one end of the push rod, and extends through one end of the push rod to the inside of the rotor. A first spiral groove is provided on the inner side wall of the rotor, and a first groove and a second groove are respectively provided at positions corresponding to the two ends of the first spiral groove on the inner side wall of the rotor, and the two ends of the first spiral groove are respectively transitionally connected with one end of the first groove and one end of the second groove. The rotation of the rotor can link the guide rod to move between the first groove and the second groove through the first spiral groove, so as to link the push rod to move in the axial direction of the rotor relative to the shell.

[0008] The other end of the push rod is provided with a seal, which is positioned within the drainer cavity and is adapted to fit within the drainer's air outlet. Furthermore, when the guide rod is positioned within the first groove, the seal is separated from the drainer's air outlet, allowing the drainer cavity to communicate with the drainer's exterior through the air outlet. When the guide rod is positioned within the second groove, the seal is sealed against the drainer's air outlet, blocking the drainer cavity from the exterior through the air outlet.

[0009] Using the above technical solution, the vacuum pump's air outlet of the automotive vacuum pump drainage mechanism is connected to the drainer's air inlet via a connecting pipe. This allows exhaust gas from the vacuum pump to enter the drainer through the drainer's air inlet and be discharged through the drainer's air outlet. When the vehicle is wading through water, water must first enter the drainer's exhaust port, then into the drainer's cavity, and then through the drainer's air inlet before entering the vacuum pump's air outlet. Therefore, compared to prior art automotive vacuum pumps that lack a drainer and allow water to enter the vacuum pump's air outlet directly, the automotive vacuum pump drainage mechanism of the present invention offers enhanced water-resistance during wading. Furthermore, a guide rod at one end of the push rod can be moved between a first groove and a second groove via a first spiral groove on the inner sidewall of the rotor, thereby coordinating the push rod's movement relative to the housing in the direction of the rotor's axis, allowing the seal at the other end of the push rod to switch between being separated and sealed from the drainer's air outlet. Therefore, when the vehicle is wading through water, the rotor rotates, driving the guide rod to move from the first groove to the second groove through the first spiral groove. This seals the seal at the other end of the push rod and the drain outlet, preventing water from entering through the drain outlet. Therefore, this automotive vacuum pump drainage mechanism effectively prevents water from entering the vacuum pump, thereby effectively preventing malfunctions caused by water ingress.

[0010] Another embodiment of the present invention provides a drainage mechanism for an automotive vacuum pump, wherein a driving device is capable of driving the vacuum pump to operate and the rotor to rotate. A gas channel is provided within the push rod, with one end of the gas channel extending to one end of the push rod, and the other end of the gas channel extending to the other end of the push rod. A first guide channel is provided at one end of the gas channel, perpendicular to and connected to the one end of the gas channel, and a guide rod is provided within the first guide channel. A first elastic member is provided within each of the first and second grooves, and the guide rod can extend or retract relative to the first guide channel.

[0011] When the guide rod extends relative to the first guide channel, the rotor rotates to link the guide rod to move between the first groove and the second groove through the first spiral groove. When the guide rod retracts relative to the first guide channel, the rotor rotates to stop linking the guide rod to move.

[0012] The drainer has a protrusion on its inner sidewall, on which a first drainer air passage is disposed. One end of the first drainer air passage communicates with the other end of the gas channel, and the other end of the first drainer air passage communicates with the drainer's air outlet. A partition assembly is also disposed within the first drainer air passage, and the partition assembly is movable along the first drainer air passage.

[0013] When the guide rod is located in the first groove and the pressure at the other end of the first drainer air channel is greater than the pressure at one end of the first drainer air channel, the partition assembly moves toward one end of the first drainer air channel, so that the pressure in the gas channel increases, the guide rod extends relative to the first guide channel, and the first guide channel is connected to the cavity of the vacuum pump.

[0014] When the guide rod is located in the first spiral groove or the second groove, the first guide channel is not communicated with the cavity of the vacuum pump.

[0015] When the push rod moves relative to the housing to cause the sealing member to move toward the air outlet of the drain, the partition assembly moves toward the other end of the air passage of the first drain.

[0016] With the above technical solution, the first guide channel is configured so that the guide rod passes through one end of the push rod and extends into the rotor, engaging with the first spiral groove on the rotor's inner sidewall. A gas channel within the push rod connects the first drainer air channel and the first guide channel. A first elastic member provides a restoring force to the guide rod. When the vehicle wades through water, water enters the other end of the first drainer air channel through the drainer's air outlet. The water pressure causes the barrier assembly to move toward one end of the first drainer air channel, increasing the pressure within the air channel. The guide rod, under the influence of the pressure within the air channel, extends relative to the first guide channel. At this point, the first guide channel is connected to the vacuum pump cavity, reducing the vacuum level within the vacuum pump and triggering the vacuum pump to operate. Because the drive device that drives the vacuum pump and the rotor is the same, the rotor rotates during vacuum pump operation. The rotor, in conjunction with the guide rod extending relative to the first guide channel, seals the seal at the other end of the push rod with the drainer's air outlet, thereby preventing water from entering through the drainer's air outlet. Compared to other devices, the drainage mechanism of this automotive vacuum pump is simpler in structure. Furthermore, because the air pressure that propels the guide rod out of the first guide channel is provided by the water pressure generated by water in the drainer, the vehicle vacuum pump's drainage mechanism is more sensitive than a structure that requires detecting water ingress in the drainer before controlling the guide rod's extension from the first guide channel. Consequently, this arrangement further reduces the likelihood of water ingress into the vehicle vacuum pump's drainage mechanism, thereby further reducing the likelihood of malfunction due to water ingress.

[0017] Another embodiment of the present invention provides a drain mechanism for an automotive vacuum pump. The seal comprises a base and an extension. One side of the base connects to the other end of the push rod and communicates with the other end of the gas channel. The extension comprises a first portion and a second portion. One end of the first portion connects to one end of the base, and the other end extends perpendicularly to the base toward the drain outlet and connects to one end of the second portion. The second portion is adapted to the drain outlet. An air chamber is formed between the other side of the base, one side of the first portion, the end surface of the protrusion on which one end of the first drain air channel is located, and the inner sidewall of the drain. The first drain air channel communicates with the other end of the gas channel through the air chamber.

[0018] By adopting the above technical solution, the air chamber can be used to store a portion of gas, thereby ensuring a certain air pressure in the air chamber.

[0019] Another embodiment of the present invention provides a drainage mechanism for an automobile vacuum pump, wherein a shell air duct is provided on the shell, and one end of the shell air duct is connected to the air outlet of the vacuum pump, and the other end of the shell air duct and one end of the gas channel can be switched between blocking and connecting.

[0020] By adopting the above technical solution, when one end of the gas channel is in communication with the cavity of the vacuum pump, the setting of the shell air channel can directly connect one end of the gas channel and the air outlet of the vacuum pump, thereby accelerating the flow of gas.

[0021] Another embodiment of the present invention provides a drainage mechanism for an automobile vacuum pump, wherein a second guide channel perpendicular to and connected to one end of the gas channel is further provided at one end of the gas channel, and the second guide channel is further away from the end face of one end of the push rod than the first guide channel.

[0022] A first connecting channel and a second connecting channel are provided between the inner and outer walls of the rotor. A flow guide channel is provided inside the guide rod. The flow guide channel is L-shaped, and one end of the flow guide channel extends to the end of the guide rod near the gas channel, so that one end of the flow guide channel is connected to one end of the gas channel. The other end of the flow guide channel extends to the side wall of the guide rod, and,

[0023] When the guide rod is located in the first groove, the other end of the guide channel is communicated with one end of the first connecting channel, and the other end of the first connecting channel is communicated with the other end of the housing air channel.

[0024] When the guide rod is located in the second groove, one end of the second connecting channel is communicated with the second guide channel, and the other end of the second connecting channel is communicated with the other end of the housing air channel.

[0025] Using the above technical solution, when the guide rod is located in the first groove, the first guide channel communicates with one end of the first connecting channel on the rotor through the guide channel provided within the guide rod, while the other end of the first connecting channel communicates with the other end of the housing air channel. This allows one end of the gas channel to communicate with the vacuum pump's air outlet, thereby triggering the vacuum pump to operate. When the vehicle is driven in water for an extended period and the vacuum pump is not required, the seal at the other end of the push rod and the drainer's air outlet are sealed. At this point, the guide rod at one end of the push rod is located in the second groove, one end of the second connecting channel communicates with the second guide channel, and the other end of the second connecting channel communicates with the other end of the housing air channel. Because water is present outside the vehicle's vacuum pump drainage mechanism, the external pressure is greater than the internal pressure, potentially causing minor sealing failures in certain locations within the mechanism. At this point, the gas within the air chamber of the vehicle vacuum pump drainage mechanism can flow through the gas passage, the second guide passage, the second connecting passage, and the housing air passage to the vacuum pump's air outlet, and then through the vacuum pump's air outlet to the vacuum pump and drainer, thereby reducing or even eliminating the pressure difference between the exterior and interior of the vehicle vacuum pump drainage mechanism. This prevents water from entering the drainage mechanism when the vehicle is driven in water for extended periods of time and when the vacuum pump is not in operation. Therefore, this arrangement further reduces the possibility of water ingress into the drainage mechanism, thereby further reducing the possibility of the drainage mechanism malfunctioning due to water ingress.

[0026] Another embodiment of the present invention provides a drainage mechanism for an automotive vacuum pump. A second spiral groove is further provided on the inner sidewall of the rotor. The second spiral groove is disposed opposite the first spiral groove and comprises a first groove portion and a second groove portion. One end of the first groove portion transitions with the other end of the second groove portion, the other end of the first groove portion spirally ascends and transitions with one end of the second groove portion, and the other end of the second groove portion spirally descends and transitions with the other end of the first groove portion.

[0027] A second drainer air channel is also provided on the protrusion of the drainer. One end of the second drainer air channel communicates with the other end of the air channel via an air chamber. The other end of the second drainer air channel communicates with the drainer's air outlet. The other end of the second drainer air channel is closer to the push rod than the other end of the first drainer air channel, and the seal is closer to the push rod than the other end of the second drainer air channel. A switch is also provided in the second drainer air channel to switch between blocking and connecting the other end of the air channel and the drainer's air outlet.

[0028] Using the above technical solution, when a vehicle is traveling in deep water, to prevent water ingress, the vehicle vacuum pump drainage mechanism seals the seal at the other end of the push rod with the drain outlet. A guide rod at one end of the push rod is positioned within the second groove, one end of the second connecting channel communicates with the second guide channel, and the other end of the second connecting channel communicates with the other end of the housing air passage. At this point, if the vehicle needs to brake, the vacuum pump is activated. Gas generated by the vacuum pump flows from the vacuum pump outlet into the housing air passage, the second connecting channel, the second guide channel, the gas passage, the air chamber, and the second drain air passage, causing the switch to open, thereby connecting the second drain air passage with the drain outlet. Gas generated by the vacuum pump can then be discharged through the second drain air passage to the drain outlet. As the density of the air discharged to the drain outlet increases, the air pressure at the drain outlet increases, thereby draining water entering the drain outlet out of the drain. After the water is cleared from the drainer's air outlet, the gas pressure within the air chamber decreases, causing the switch element to return to its original closed state. Gas generated by the vacuum pump enters the housing air passage, the second connecting passage, the second guide passage, and one end of the gas passage from the vacuum pump outlet, pushing the guide rod out relative to the first guide passage. The extended guide rod is capable of engaging with the rotating rotor and the second spiral groove on the inner side wall of the rotor, causing the guide rod to first spirally ascend from the second groove along the first groove portion of the second spiral groove, driving the push rod upward, separating the seal at the other end of the push rod from the drainer's air outlet, thereby facilitating the discharge of gas generated by the vacuum pump from the drainer's air outlet. As the push rod rises, the volume of the air chamber increases, thereby reducing the air pressure within the air chamber, causing the switch element to open, allowing gas to enter the air chamber from the drainer's air outlet through the second drainer air passage. When the guide rod reaches the highest point of the first groove portion of the second spiral groove, it enters the second groove portion of the second spiral groove and engages with the second groove portion of the second spiral groove, causing the guide rod to spiral downward along the second groove portion of the second spiral groove, driving the push rod downward. This downward movement of the push rod reduces the volume of the air chamber, and the compressed gas in the air chamber enters the first drainer airway and the second drainer airway, restoring the switch to its original closed state. This automotive vacuum pump drainage mechanism utilizes air and water pressure to remove water from the drainer outlet before the seal separates from the drainer outlet. This not only meets the brake exhaust requirements of the automotive vacuum pump drainage mechanism but also avoids the problem of water ingress into the drainer. This problem can be solved by simply adding several gas channels within the automotive vacuum pump drainage mechanism. Therefore, this automotive vacuum pump drainage mechanism not only has the advantage of preventing water ingress into the automotive vacuum pump drainage mechanism, but also has the advantage of a simple structure.

[0029] Another embodiment of the present invention provides a drain mechanism for an automotive vacuum pump, wherein a second drainer air passage comprises a first air segment, a second air segment, and a third air segment. One end of the first air segment communicates with the air chamber and the other end communicates with the sidewall of the second air segment. One end of the second air segment communicates with the sidewall of the first drainer air passage and the other end communicates with one end of the third air segment. The other end of the third air segment communicates with the drainer's air outlet. A switch is disposed within the second air segment.

[0030] By adopting the above technical solution, one end of the second air section is connected to the side wall of the first drainer air channel, so that the gas in the first drainer air channel can enter the second air section.

[0031] Another embodiment of the present invention provides a drainage mechanism for an automobile vacuum pump, wherein the switch member includes a first piston and a second elastic member, and the first piston is capable of sliding along the second air segment. The first piston is provided with a first hole portion, a second hole portion, and a third hole portion, wherein the first hole portion is provided on the end surface of the first piston close to the third air segment, and the second hole portion and the third hole portion are provided on the side wall of the first piston with a gap. A first air guide channel and a second air guide channel are provided in the first piston, and the first air guide channel connects the first hole portion and the second hole portion, and the second air guide channel connects the first hole portion and the third hole portion. The second elastic member is provided in the second air segment, and the two ends of the second elastic member are respectively connected to the end surface of the first piston provided with the first hole portion and the other end of the second air segment.

[0032] By adopting the above technical solution, compared with setting other switch components such as a valve body, setting the switch component as the first piston and the second elastic component can make the structure of the automobile vacuum pump drainage mechanism simpler.

[0033] Another embodiment of the present invention provides a drain mechanism for an automotive vacuum pump. The barrier assembly is located near the other end of a first drain passage, and a stopper is provided at the other end of the first drain passage. The barrier assembly includes a second piston, a barrier member, and a third piston. The two ends of the barrier member abut against opposing end surfaces of the second and third pistons, respectively.

[0034] By adopting the above technical solution, compared with other structures, the partition assembly is configured as the second piston, the isolation member and the third piston, which can make the structure of the automobile vacuum pump drainage mechanism simpler.

[0035] An embodiment of the present invention further provides an automobile, comprising any one of the above-mentioned automobile vacuum pump drainage mechanisms.

[0036] By adopting the above technical solution, the drainage mechanism of the automobile vacuum pump can effectively prevent water from entering the vacuum pump, thereby effectively avoiding the problem of malfunction of the vacuum pump caused by water ingress.

[0037] The beneficial effects of the present invention are:

[0038] The present invention provides a vehicle vacuum pump drainage mechanism comprising a vacuum pump, a drainer, a connecting pipe, and a push rod. The vacuum pump comprises a rotor and a driving component, both of which are disposed within a cavity of a housing. The driving component is configured to drive the rotor to rotate relative to the housing. A guide rod is disposed at one end of the push rod. Rotation of the rotor can cause the guide rod to move between a first groove and a second groove via a first spiral groove, thereby causing the push rod to move axially relative to the housing. A seal is disposed at the other end of the push rod and is disposed within the cavity of the drainer. The seal mates with the drainer's air outlet. The vacuum pump's air outlet of the vehicle vacuum pump drainage mechanism is connected to the drainer's air inlet via a connecting pipe. Gas discharged from the vacuum pump during operation enters the drainer through the drainer's air inlet and is discharged through the drainer's air outlet. When a vehicle wades through water, water enters the drainer's exhaust port before entering the vacuum pump, then into the drainer's cavity, and then through the drainer's air inlet before entering the vacuum pump's air outlet. Therefore, compared to prior art automotive vacuum pumps that lack a drainer and allow water to enter the vacuum pump outlet directly, the automotive vacuum pump drainage mechanism of the present invention offers enhanced water resistance when the vehicle is wading through water. Furthermore, because the guide rod at one end of the push rod can move between the first and second grooves via the first spiral groove on the inner sidewall of the rotor, the push rod is linked to move in the axial direction of the rotor relative to the housing, allowing the seal at the other end of the push rod and the drain outlet to switch between being separated and sealed. Therefore, when the vehicle is wading through water, the rotor rotates, driving the guide rod from the first groove to the second groove via the first spiral groove, sealing the seal at the other end of the push rod and the drain outlet, thereby preventing water from entering through the drain outlet. Therefore, the automotive vacuum pump drainage mechanism can effectively prevent water from entering the vacuum pump, thereby effectively avoiding malfunctions of the vacuum pump due to water ingress.

[0039] Other features and corresponding beneficial effects of the present invention are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the description in the specification of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural diagram of an automobile vacuum pump in the prior art;

[0041] Figure 2 A schematic diagram of the three-dimensional structure of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0042] Figure 3 A schematic side view of the drainage mechanism of a vacuum pump for an automobile provided by an embodiment of the present invention;

[0043] Figure 4 for Figure 3A schematic diagram of the structure of the sealing member of the drainage mechanism of the automobile vacuum pump in a separated state relative to the air outlet of the drainer, viewed along the AA direction;

[0044] Figure 5a A schematic structural diagram of a first spiral groove on a rotor of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0045] Figure 5b A schematic top view of the rotor of the drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0046] Figure 5c for Figure 5b A schematic diagram of the structure of the rotor along the BB direction;

[0047] Figure 6 A schematic diagram of the partial structure of a push rod of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0048] Figure 7 A schematic structural diagram of a guide rod of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention in a state in which the guide rod is extended relative to the first guide channel;

[0049] Figure 8 for Figure 7 A partial enlarged view of the mating part between one end of the middle push rod and the rotor;

[0050] Figure 9 A schematic structural diagram of a guide rod of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention in a retracted state relative to a first guide channel;

[0051] Figure 10 for Figure 3 A schematic structural diagram of a seal of a drain mechanism of an automobile vacuum pump in a closed state relative to an air outlet of the drainer, viewed along the AA direction;

[0052] Figure 11 for Figure 10 A partial enlarged view of the first drainer air duct and the second drainer air duct;

[0053] Figure 12a A schematic diagram of the three-dimensional structure of a push rod of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0054] Figure 12b A schematic top view of the push rod of the drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0055] Figure 12c for Figure 12b Schematic diagram of the structure along the CC direction;

[0056] Figure 13aA schematic diagram of the three-dimensional structure of a housing of a vacuum pump of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0057] Figure 13b A top view of a housing of a vacuum pump of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0058] Figure 13c for Figure 13b Schematic diagram of the structure along the DD direction;

[0059] Figure 14a A schematic diagram of the internal structure of a rotor of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention from a front view;

[0060] Figure 14b A schematic diagram of the internal structure of a rotor of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention, viewed from above;

[0061] Figure 15a for Figure 14b Schematic diagram of the structure along the EE direction;

[0062] Figure 15b for Figure 15a A partial enlarged view of part F in FIG;

[0063] Figure 16a A schematic diagram of the three-dimensional structure of a guide rod of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0064] Figure 16b for Figure 16a Schematic diagram of the main structure;

[0065] Figure 16c for Figure 16a Schematic diagram of the left view structure;

[0066] Figure 16d for Figure 16a Schematic diagram of the right view structure;

[0067] Figure 16e for Figure 16a Schematic diagram of the structure viewed from above;

[0068] Figure 16f for Figure 16a Schematic diagram of the top view structure;

[0069] Figure 16g for Figure 16a Schematic diagram of the cross-sectional structure;

[0070] Figure 17a A schematic diagram of the three-dimensional internal structure of a rotor of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0071] Figure 17b for Figure 17a Schematic diagram of the structure viewed from above;

[0072] Figure 17c for Figure 17b A schematic diagram of the structure cut along the GG direction;

[0073] Figure 17d for Figure 17b A schematic diagram of the structure viewed along the HH direction;

[0074] Figure 17e for Figure 17a A schematic diagram of the internal structure of the rotor viewed from the main direction;

[0075] Figure 17f for Figure 17a A schematic diagram of the internal structure of the rotor viewed from the other direction;

[0076] Figure 18a A schematic structural diagram of a second spiral groove on a rotor of a drainage mechanism of an automobile vacuum pump provided by an embodiment of the present invention;

[0077] Figure 18b for Figure 18a A schematic diagram of the structure of the main view;

[0078] Figure 18c for Figure 18a A schematic diagram of the structure from a top view;

[0079] Figure 19a A schematic structural diagram of a vehicle vacuum pump drainage mechanism according to an embodiment of the present invention, wherein the third hole portion of the first piston and the first gas section are in a connected state;

[0080] Figure 19b for Figure 19a A partial enlarged view of part I;

[0081] Figure 20a A schematic structural diagram of a vehicle vacuum pump drainage mechanism according to an embodiment of the present invention showing a state in which the second hole portion of the first piston and the first gas section are in communication;

[0082] Figure 20b for Figure 20a A partial enlarged view of the J part.

[0083] Description of reference numerals:

[0084] 10: One-way valve;

[0085] 20: Vacuum pump;

[0086] 210: housing; 211: air inlet; 212: air outlet; 213: housing airway;

[0087] 220: rotor; 221: first spiral groove; 222: first groove; 223: second groove; 224: first connecting channel; 225: second connecting channel; 226: second spiral groove; 2261: first groove portion; 2262: second groove portion;

[0088] 230: driving components;

[0089] 240: first elastic member;

[0090] 250: impeller;

[0091] 260: transmission shaft;

[0092] 30: Drain;

[0093] 310: air intake;

[0094] 320: air outlet;

[0095] 330: protrusion; 331: first drainer air passage; 3311: second piston; 3312: isolation member; 3313: third piston; 332: second drainer air passage; 3321: first air section; 3322: second air section; 3323: third air section; 3324: first piston; 3324a: first hole; 3324b: second hole; 3324c: third hole; 3325: second elastic member;

[0096] 40: Putting;

[0097] 410: guide rod; 411: diversion channel;

[0098] 420: sealing member; 421: base; 422: extension;

[0099] 430: gas channel;

[0100] 440: first guide channel;

[0101] 450: second guide channel;

[0102] 50: connecting pipe;

[0103] 60: air chamber;

[0104] L: The axis direction of the rotor. DETAILED DESCRIPTION

[0105] The following is an explanation of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0106] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0107] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0108] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0109] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "disposed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0110] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0111] This embodiment provides a vehicle vacuum pump drainage mechanism, such as Figure 2-5cAs shown, the vacuum pump 20 includes a housing 210 with a cavity formed therein. The housing 210 is provided with an air inlet 211 and an air outlet 212 communicating with the cavity. The automotive vacuum pump drainage mechanism also includes a drainer 30, a connecting pipe 50, and a push rod 40. The drainer 30 has a cavity formed therein and is provided with an air inlet 310 and an air outlet 320 communicating with the cavity within the drainer 30. The connecting pipe 50 has two ends that communicate with the air outlet 212 of the vacuum pump 20 and the air inlet 310 of the drainer 30, respectively.

[0112] The vacuum pump 20 also includes a rotor 220 and a drive component 230. Both are disposed within the cavity of the housing 210, with the drive component 230 being configured to drive the rotor 220 to rotate relative to the housing 210. A guide rod 410 is disposed at one end of the push rod 40 and extends through one end of the push rod 40 into the interior of the rotor 220. A first spiral groove 221 is disposed on the inner sidewall of the rotor 220. A first groove 222 and a second groove 223 are disposed on the inner sidewall of the rotor 220 at positions corresponding to the ends of the first spiral groove 221. The ends of the first spiral groove 221 transitionally connect with one end of the first groove 222 and one end of the second groove 223, respectively. Rotation of the rotor 220 can cause the guide rod 410 to move between the first groove 222 and the second groove 223 via the first spiral groove 221, thereby causing the push rod 40 to move relative to the housing 210 in the axial direction L of the rotor 220.

[0113] The other end of the push rod 40 is provided with a seal 420, which is disposed within the cavity of the drainer 30. The seal 420 mates with the air outlet 320 of the drainer 30. Furthermore, when the guide rod 410 is located within the first groove 222, the seal 420 is separated from the air outlet 320 of the drainer 30, allowing the cavity of the drainer 30 to communicate with the exterior of the drainer 30 through the air outlet 320. When the guide rod 410 is located within the second groove 223, the seal 420 is sealed against the air outlet 320 of the drainer 30, blocking the cavity of the drainer 30 from the exterior of the drainer 30 through the air outlet 320.

[0114] Specifically, the connecting tube 50 can be made of either a hard material or a soft material. Preferably, for ease of installation, the connecting tube 50 in this embodiment is made of a soft material. The soft material connecting tube 50 can be made of rubber, plastic, or the like. The specific material can be determined based on actual design and usage requirements, and is not specifically limited in this embodiment.

[0115] More specifically, the driving component that drives the rotor 220 to rotate and the driving component that drives the vacuum pump 20 to work can be set to be the same or separately. Preferably, in order to make the structure of the automobile vacuum pump drainage mechanism simpler, in this embodiment, the driving component 230 that drives the rotor 220 to rotate and the driving component 230 that drives the vacuum pump 20 to work are set to be the same.

[0116] More specifically, the driving component 230 can be configured as an electric motor, etc., which can be specifically set according to actual design and usage requirements, and this embodiment does not make any specific limitations on this.

[0117] More specifically, if Figure 4 As shown, the vacuum pump 20 completes its working process by driving the impeller 250 to rotate through the driving component 230. A transmission shaft 260 is further provided between the output shaft of the driving component 230 and the rotor 220 for transmitting the power of the driving component 230 to the rotor 220. In addition, a speed regulating component and a clutch may be further provided between the driving component 230 and the rotor 220 to prevent the rotor 220 and the impeller 250 from rotating at the same speed. The specific setting of the speed regulating component and the clutch can be determined according to the actual design and use requirements, and is not specifically limited in this embodiment.

[0118] More specifically, the seal 420 can be made of either a hard material or a soft material. When the seal 420 is made of a hard material, a sealing ring can be provided on one end of the seal 420 near the air outlet 320 of the drainer 30 to ensure a seal between the seal 420 and the air outlet 320 of the drainer 30. When the seal 420 is made of a soft material, an interference fit is formed between the seal 420 and the air outlet 320 of the drainer 30 to ensure a seal between the seal 420 and the air outlet 320 of the drainer 30. While ensuring the lightweight requirements of the automotive vacuum pump drainage mechanism, the specific design can be determined based on actual design and usage requirements, and this embodiment does not impose any specific limitations on this.

[0119] More specifically, the spiral height of the first spiral groove 221 , that is, the height between the first groove 222 and the second groove 223 , is the maximum distance that the seal 420 can be separated from the air outlet 320 of the drain 30 .

[0120] More specifically, only the first spiral groove 221 can be set on the inner wall of the rotor 220. When the seal 420 switches from a separated state to a sealed state relative to the air outlet 320 of the drainer 30, the guide rod 410 can move from the first groove 222 to the second groove 223 through the first spiral groove 221; when the seal 420 switches from a sealed state back to a separated state relative to the air outlet 320 of the drainer 30, the guide rod 410 can move from the second groove 223 back to the first groove 222 through the first spiral groove 221. Other spiral grooves may also be provided on the inner sidewall of the rotor 220. When the seal 420 switches from a separated state to a sealed state relative to the outlet 320 of the drainer 30, the guide rod 410 can be moved from the first groove 222 to the second groove 223 via the first spiral groove 221. When the seal 420 switches from a sealed state to a separated state relative to the outlet 320 of the drainer 30, the guide rod 410 can be moved from the second groove 223 back to the first groove 222 via the other spiral grooves. The specific configuration can be determined based on actual design and usage requirements and is not specifically limited in this embodiment.

[0121] More specifically, if Figure 4 As shown, a trapezoidal plug is provided at the air outlet 212 of the vacuum pump 20, so that the gas can only be discharged from the air outlet 212 of the vacuum pump 20 to the air inlet 310 of the drainer 30 through the connecting pipe 50, and cannot be discharged from the air inlet 310 of the drainer 30 to the air outlet 212 of the vacuum pump 20 through the connecting pipe 50.

[0122] It should be noted that the air outlet 212 of the vacuum pump 20 of the automotive vacuum pump drainage mechanism is connected to the air inlet 310 of the drainer 30 via a connecting pipe 50. This allows the gas exhausted by the vacuum pump 20 during operation to enter the drainer 30 through the air inlet 310 of the drainer 30 and be discharged through the exhaust port of the drainer 30. When the vehicle is wading through water, water must first enter the exhaust port of the drainer 30, then enter the cavity of the drainer 30, and then pass through the air inlet 310 of the drainer 30 before entering the air outlet 212 of the vacuum pump 20. Therefore, compared to prior art automotive vacuum pumps that lack a drainer 30 and allow water to enter the vacuum pump outlet directly, the automotive vacuum pump drainage mechanism of the present invention provides a stronger waterproof capability when the vehicle is wading through water. Furthermore, because the guide rod 410 at one end of the push rod 40 can move between the first groove 222 and the second groove 223 via the first spiral groove 221 on the inner sidewall of the rotor 220, the push rod 40 can be moved relative to the housing 210 in the axial direction L of the rotor 220. This allows the seal 420 at the other end of the push rod 40 to switch between being separated and sealed from the outlet 320 of the drain 30. Therefore, when the vehicle is wading through water, the rotor 220 rotates, driving the guide rod 410 from the first groove 222 to the second groove 223 via the first spiral groove 221. This seals the seal 420 at the other end of the push rod 40 and the outlet 320 of the drain 30, thereby preventing water from entering the outlet 320 of the drain 30. Therefore, this automotive vacuum pump drainage mechanism effectively prevents water from entering the vacuum pump 20, thereby effectively preventing malfunctions caused by water ingress.

[0123] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figure 3-Figure 6 As shown, the driving device can drive the vacuum pump 20 to work and can drive the rotor 220 to rotate. A gas channel 430 is provided inside the push rod 40, and one end of the gas channel 430 extends to one end of the push rod 40, and the other end of the gas channel 430 extends to the other end of the push rod 40. One end of the gas channel 430 is provided with a first guide channel 440 perpendicular to and connected to one end of the gas channel 430, as shown in FIG. Figure 6 As shown, the guide rod 410 is disposed in the first guide channel 440 . The first elastic member 240 is disposed in both the first groove 222 and the second groove 223 , and the guide rod 410 can extend or retract relative to the first guide channel 440 .

[0124] When the guide rod 410 extends relative to the first guide channel 440, the rotation of the rotor 220 can link the guide rod 410 to move between the first groove 222 and the second groove 223 through the first spiral groove 221. When the guide rod 410 retracts relative to the first guide channel 440, the rotation of the rotor 220 cannot link the guide rod 410 to move.

[0125] A protrusion 330 is provided on the inner sidewall of the drain 30. A first drain air channel 331 is provided on the protrusion 330. One end of the first drain air channel 331 communicates with the other end of the gas channel 430, and the other end of the first drain air channel 331 communicates with the air outlet 320 of the drain 30. A partition assembly is also provided within the first drain air channel 331 and is movable along the first drain air channel 331.

[0126] When the guide rod 410 is located in the first groove 222 and the pressure at the other end of the first drainer air channel 331 is greater than the pressure at one end of the first drainer air channel 331, the partition assembly moves toward one end of the first drainer air channel 331, so that the pressure in the gas channel 430 increases, the guide rod 410 extends relative to the first guide channel 440, and the first guide channel 440 is connected to the cavity of the vacuum pump 20.

[0127] When the guide rod 410 is located in the first spiral groove 221 or the second groove 223 , the first guide channel 440 is not connected to the cavity of the vacuum pump 20 .

[0128] When the push rod 40 moves relative to the housing 210 so that the sealing member 420 moves toward the air outlet 320 of the drain 30 , the partition assembly moves toward the other end of the first drain air passage 331 .

[0129] Specifically, the first elastic member 240 can be configured as a spring, a spring sheet or other elastic components. Preferably, in order to make the first elastic member 240 have better recovery performance and occupy less space, the first elastic member 240 in this embodiment is configured as a spring.

[0130] More specifically, the partition assembly is used to seal the first drainer air passage 331 .

[0131] More specifically, when the guide rod 410 extends relative to the first guide channel 440, as shown in FIG. Figure 7 and Figure 8 As shown, the guide rod 410 is in contact with the inner wall of the rotor 220, so the guide rod 410 can move between the first groove 222 and the second groove 223 along the first spiral groove 221. When the guide rod 410 is retracted relative to the first guide channel 440, as shown in FIG. Figure 9 As shown, the guide rod 410 is located in the first guide channel 440 , so that the guide rod 410 does not contact the inner wall of the rotor 220 , so the rotation of the rotor 220 cannot be linked to the movement of the guide rod 410 .

[0132] More specifically, when the guide rod 410 is extended relative to the first guide channel 440, since the vacuum pump 20 needs to work, the first guide channel 440 is connected to the cavity of the vacuum pump 20, and the partition assembly can be moved toward one end of the first drainer air channel 331. The squeezed gas is discharged into the cavity of the vacuum pump 20 through the gas channel 430, reducing the vacuum degree in the vacuum pump 20, and then triggering the vacuum pump 20 to work.

[0133] When the guide rod 410 is located in the first spiral groove 221 or the second groove 223, the vacuum pump 20 is already working, and a large amount of gas generated by the vacuum pump 20 cannot be discharged from the first drainer air channel 331 sealed by the partition component through the cavity of the vacuum pump 20, the first guide channel 440 and the gas channel 430. Therefore, at this time, the first guide channel 440 is not connected to the cavity of the vacuum pump 20.

[0134] It should be noted that the setting of the first guide channel 440 allows the guide rod 410 to pass through one end of the push rod 40 and extend to the inside of the rotor 220 to cooperate with the first spiral groove 221 on the inner wall of the rotor 220. The gas channel 430 provided inside the push rod 40 connects the first drainer air channel 331 and the first guide channel 440. The first elastic member 240 is used to provide a restoring force to the guide rod 410. When the car is wading, water will enter the other end of the first drainer air channel 331 through the air outlet 320 of the drainer 30. The water pressure is greater than the air pressure inside the drainage mechanism of the automobile vacuum pump, causing the partition assembly to move toward one end of the first drainer air channel 331, as shown in FIG. Figure 7 As shown, the gas pressure in the gas channel 430 increases, and the guide rod 410 is extended relative to the first guide channel 440 by the gas pressure in the gas channel 430, as shown in FIG. Figure 7 and Figure 8 As shown. At this time, the first guide channel 440 is in a connected state with the cavity of the vacuum pump 20, and the partition assembly can be moved toward one end of the first drainer air channel 331. The squeezed gas is discharged into the cavity of the vacuum pump 20 through the gas channel 430, resulting in a decrease in the vacuum degree in the vacuum pump 20, triggering the vacuum pump 20 to work. Because the driving device that drives the vacuum pump 20 to work and the driving device that drives the rotor 220 to rotate are the same driving device, the rotor 220 will also rotate when the vacuum pump 20 is working, and the rotor 220 cooperates with the guide rod 410 extending relative to the first guide channel 440, as shown Figure 5a-5c As shown, the guide rod 410 spirally descends from the first groove 222 to the second groove 223 through the first spiral groove 221, driving the push rod 40 to spirally descend, so that the seal 420 at the other end of the push rod 40 and the air outlet 320 of the drain 30 are in a sealed state, as shown in FIG. Figure 10 and Figure 11As shown, this prevents water from entering through the air outlet 320 of the drain 30. Compared to other devices, this automotive vacuum pump drainage mechanism has a simpler structure. Furthermore, because the air pressure that pushes the guide rod 410 to extend relative to the first guide channel 440 is provided by the water pressure when water enters the drain 30, this automotive vacuum pump drainage mechanism is more sensitive than structures that require detecting water ingress into the drain 30 and then controlling the extension of the guide rod 410 relative to the first guide channel 440. Therefore, this arrangement further reduces the possibility of water ingress into the automotive vacuum pump drainage mechanism, thereby further reducing the possibility of the drainage mechanism malfunctioning due to water ingress.

[0135] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figure 10-12c As shown, the seal 420 includes a base 421 and an extension 422. One side of the base 421 connects to the other end of the push rod 40 and communicates with the other end of the gas channel 430. The extension 422 includes a first portion and a second portion. One end of the first portion connects to one end of the base 421, while the other end extends perpendicularly to the base 421 toward the gas outlet 320 of the drainer 30 and connects to one end of the second portion. The second portion is adapted to fit within the gas outlet 320 of the drainer 30. An air chamber 60 is formed between the other side of the base 421, one side of the first portion, the end surface of the protrusion 330 where one end of the first drainer gas channel 331 is located, and the inner sidewall of the drainer 30. The first drainer gas channel 331 communicates with the other end of the gas channel 430 through the air chamber 60.

[0136] Specifically, the volume of the air chamber 60 corresponding to the maximum distance that the seal 420 can be separated from the air outlet 320 of the drainer 30 is the maximum volume of the air chamber 60, and the maximum volume of the air chamber 60 is the air pressure in the vacuum pump drainage mechanism of the automobile when the automobile is driving normally (not wading through water).

[0137] More specifically, a spring may or may not be provided between one side of the base 421 above the air chamber 60 and the inner wall end surface of the drain 30. This specific setting can be determined based on actual design and usage requirements and is not specifically limited in this embodiment. Furthermore, when the spring is not provided and the vehicle is operating normally, the force generated by the air pressure within the vehicle's vacuum pump drain mechanism is sufficient to offset the weight of the seal 420. When the spring is provided and the vehicle is operating normally, the force generated by the air pressure within the vehicle's vacuum pump drain mechanism is less than the weight of the seal 420.

[0138] It should be noted that the air chamber 60 can be used to store a portion of gas, thereby ensuring a certain air pressure in the air chamber 60 .

[0139] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figure 10 、 Figure 13a 、 Figure 13b as well as Figure 13c As shown, a shell air channel 213 is provided on the shell 210, and one end of the shell air channel 213 is connected to the gas outlet 212 of the vacuum pump 20, and the other end of the shell air channel 213 and one end of the gas channel 430 can be switched between blocking and connecting.

[0140] It should be noted that when one end of the gas channel 430 is in communication with the cavity of the vacuum pump 20, the setting of the shell air channel 213 can directly connect one end of the gas channel 430 and the gas outlet 212 of the vacuum pump 20, thereby accelerating the flow of gas.

[0141] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figure 4 、 Figure 7 and Figure 14a-Figure 16g As shown, a second guide channel 450 perpendicular to and connected to one end of the gas channel 430 is further provided at one end of the gas channel 430 , and the second guide channel 450 is further away from the end surface of one end of the push rod 40 than the first guide channel 440 .

[0142] A first connecting channel 224 and a second connecting channel 225 are provided between the inner wall and the outer wall of the rotor 220. A guide channel 411 is provided inside the guide rod 410. The guide channel 411 is in an "L" shape. Figure 16g As shown, one end of the guide channel 411 extends to the end of the guide rod 410 near the gas channel 430, so that one end of the guide channel 411 is connected to one end of the gas channel 430. The other end of the guide channel 411 extends to the side wall of the guide rod 410, and,

[0143] When the guide rod 410 is located in the first groove 222 , the other end of the guide channel 411 is communicated with one end of the first connecting channel 224 , and the other end of the first connecting channel 224 is communicated with the other end of the housing air channel 213 .

[0144] When the guide rod 410 is located in the second groove 223 , one end of the second connecting channel 225 is communicated with the second guide channel 450 , and the other end of the second connecting channel 225 is communicated with the other end of the housing air passage 213 .

[0145] Specifically, when the guide rod 410 is located in the first groove 222, one end of the guide channel 411 is connected to the gas channel 430, and the other end is connected to one end of the first connecting channel 224, and the other end of the first connecting channel 224 is connected to the other end of the shell air channel 213, so that the first guide channel 440 is connected to the cavity of the vacuum pump 20.

[0146] When the guide rod 410 is located in the second groove 223, one end of the second connecting channel 225 communicates with the second guide channel 450, and the other end of the second connecting channel 225 communicates with the other end of the housing air passage 213. At this point, the vacuum pump 20 has stopped operating. The second guide channel 450 and the second connecting channel 225 are configured such that, when the guide rod 410 is located in the second groove 223, gas within the air chamber 60 can enter the vacuum pump 20 through the gas passage 430, the second guide channel 450, the second connecting channel 225, and the housing air passage 213, and then enter the drainer 30 through the air outlet 212 of the vacuum pump 20. This increases the air pressure within the vacuum pump 20 and the drainer 30, thereby reducing or even eliminating the pressure differential between the inside and outside of the drainage mechanism of the automotive vacuum pump, thereby preventing seal failure at locations within the drainage mechanism of the automotive vacuum pump, such as between the air outlet 320 of the drainer 30 and the seal 420, and between the push rod 40, the vacuum pump 20, and the drainer 30.

[0147] It should be noted that when the guide rod 410 is located in the first groove 222, the first guide channel 440 is connected to one end of the first connecting channel 224 on the rotor 220 through the guide channel 411 set inside the guide rod 410, and the other end of the first connecting channel 224 is connected to the other end of the shell air channel 213, so that one end of the gas channel 430 is connected to the air outlet 212 of the vacuum pump 20, and then the partition assembly can be moved toward one end of the first drainer air channel 331 to discharge the squeezed gas into the cavity of the vacuum pump 20, thereby reducing the vacuum degree in the vacuum pump 20 to trigger the vacuum pump 20 to work. When the vehicle is submerged in water for an extended period without the vacuum pump 20 in operation, the seal 420 at the other end of the push rod 40 and the air outlet 320 of the drain 30 are sealed. At this point, the guide rod 410 at one end of the push rod 40 is located within the second groove 223. One end of the second connecting channel 225 communicates with the second guide channel 450, and the other end of the second connecting channel 225 communicates with the other end of the housing air passage 213. Because water is present outside the vehicle's vacuum pump drain mechanism, the external pressure is greater than the internal pressure, potentially causing minor seal failures in certain locations within the mechanism. At this time, the gas in the air chamber 60 of the automobile vacuum pump drainage mechanism can flow through the gas channel 430, the second guide channel 450, the second connecting channel 225, and the housing air channel 213 to the air outlet 212 of the vacuum pump 20, and then flow through the air outlet 212 of the vacuum pump 20 to the vacuum pump 20 and the drainer 30, thereby reducing or even eliminating the pressure difference between the outside and inside of the automobile vacuum pump drainage mechanism, thereby preventing the automobile from driving in water for a long time and preventing water from entering the automobile vacuum pump drainage mechanism when the vacuum pump 20 is not in operation. Therefore, this arrangement further reduces the possibility of water ingress into the automobile vacuum pump drainage mechanism, and further reduces the possibility of the automobile vacuum pump drainage mechanism malfunctioning due to water ingress.

[0148] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figure 10 and Figures 17a-18c As shown, a second spiral groove 226 is further provided on the inner side wall of the rotor 220. The second spiral groove 226 is arranged opposite to the first spiral groove 221 and includes a first groove portion 2261 and a second groove portion 2262. One end of the first groove portion 2261 transitions with the other end of the second groove 223, the other end of the first groove portion 2261 spirally rises and transitions with one end of the second groove portion 2262, and the other end of the second groove portion 2262 spirally descends and transitions with the other end of the first groove 222.

[0149] A second drain air channel 332 is also provided on the protrusion 330 of the drain 30. One end of the second drain air channel 332 communicates with the other end of the gas channel 430 via the air chamber 60. The other end of the second drain air channel 332 communicates with the gas outlet 320 of the drain 30. The other end of the second drain air channel 332 is closer to the push rod 40 than the other end of the first drain air channel 331, and the seal 420 is closer to the push rod 40 than the other end of the second drain air channel 332. A switch is also provided within the second drain air channel 332 to switch between blocking and connecting the other end of the gas channel 430 to the gas outlet 320 of the drain 30.

[0150] Specifically, the rotor 220 rotates 180° so that the guide rod 410 moves from the first groove 222 to the second groove 223 through the first spiral groove 221, thereby switching the seal 420 from the separated state to the sealed state relative to the air outlet 320 of the drainer 30; the rotor 220 rotates another 180° so that the guide rod 410 moves from the second groove 223 back to the first groove 222 through the second spiral groove 226, thereby switching the seal 420 from the sealed state to the separated state relative to the air outlet 320 of the drainer 30.

[0151] More specifically, the switch element can be set as a pressure control valve with a pressure threshold set within a certain range, or it can be set as a piston that can slide along the second drainer air channel 332 and has a channel inside. Preferably, in order to make the structure of the automobile vacuum pump drainage mechanism simpler, the switch element in this embodiment is set as a piston. Its specific structure is described in detail later and will not be repeated here.

[0152] More specifically, since the other end of the first drainer air channel 331 needs to use water pressure to push the partition assembly to move, it needs to contact water, and the other end of the second drainer air channel 332 needs to use air pressure to clear the water at the air outlet 320 of the drainer 30 before the seal 420 is separated from the air outlet 320 of the drainer 30, the other end of the second drainer air channel 332 is closer to the push rod 40 than the other end of the first drainer air channel 331, and the seal 420 is closer to the push rod 40 than the other end of the second drainer air channel 332.

[0153] It should be noted that when the car is driving in deep water, in order to prevent water from entering, the car vacuum pump drainage mechanism makes the seal 420 at the other end of the push rod 40 and the air outlet 320 of the drain 30 in a sealed state, such as Figure 10As shown, the guide rod 410 at one end of the push rod 40 is located in the second groove 223 , one end of the second connecting channel 225 is connected to the second guide channel 450 , and the other end of the second connecting channel 225 is connected to the other end of the housing air channel 213 . At this time, if the car needs to brake, the vacuum pump 20 will be activated, and the gas generated by the vacuum pump 20 will enter the shell air channel 213, the second connecting channel 225, the second guide channel 450, the gas channel 430, the air chamber 60 and the second drainer air channel 332 from the air outlet 212 of the vacuum pump 20, so that the switch is in the open state, thereby making the second drainer air channel 332 connected to the air outlet 320 of the drainer 30, and then the gas generated by the vacuum pump 20 can be discharged to the air outlet 320 of the drainer 30 through the second drainer air channel 332. As the density of the air discharged to the air outlet 320 of the drainer 30 increases, the air pressure at the air outlet 320 of the drainer 30 increases, and the water entering from the air outlet 320 of the drainer 30 is discharged to the outside of the drainer 30. After the water at the air outlet 320 of the drainer 30 is cleared, the gas pressure inside the air chamber 60 drops, causing the switch to return to its original closed state. The gas generated by the vacuum pump 20 enters the shell air channel 213, the second connecting channel 225, the second guide channel 450 and one end of the gas channel 430 from the air outlet 212 of the vacuum pump 20, pushing the guide rod 410 to extend relative to the first guide channel 440, and the extended guide rod 410 can cooperate with the rotating rotor 220 and the second spiral groove 226 on the inner side wall of the rotor 220, so that the guide rod 410 first spirally rises from the second groove 223 along the first groove portion 2261 of the second spiral groove 226, driving the push rod 40 to rise, so that the seal 420 at the other end of the push rod 40 is in a separated state from the air outlet 320 of the drainer 30, so that the gas generated by the vacuum pump 20 can be discharged from the air outlet 320 of the drainer 30. As the push rod 40 rises, the volume of the air chamber 60 increases, thereby reducing the air pressure within the air chamber 60. This opens the switch element, allowing gas to enter the air chamber 60 from the outlet 320 of the drainer 30 through the second drainer air passage 332. When the guide rod 410 reaches the highest point of the first groove portion 2261 of the second spiral groove 226, it enters the second groove portion 2262 of the second spiral groove 226 and engages with the second groove portion 2262 of the second spiral groove 226, causing the guide rod 410 to spiral downward along the second groove portion 2262 of the second spiral groove 226, driving the push rod 40 downward. This downward movement of the push rod 40 reduces the volume of the air chamber 60, allowing the compressed gas within the air chamber 60 to enter the first drainer air passage 331 and the second drainer air passage 332, returning the switch element to its original closed state.This automotive vacuum pump drainage mechanism utilizes air and water pressure to remove water from the drain outlet 320 before the seal 420 separates from the drain outlet 320. This not only meets the brake venting requirements of the automotive vacuum pump drainage mechanism but also prevents water from entering the drain outlet 30. Furthermore, this problem can be solved by simply adding several air passages 430 within the automotive vacuum pump drainage mechanism. Therefore, this automotive vacuum pump drainage mechanism not only prevents water from entering the mechanism but also has the advantage of a simple structure.

[0154] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figures 19a-20b As shown, the second drainer air passage 332 includes a first air segment 3321, a second air segment 3322, and a third air segment 3323. One end of the first air segment 3321 communicates with the air chamber 60, and the other end communicates with the sidewall of the second air segment 3322. One end of the second air segment 3322 communicates with the sidewall of the first drainer air passage 331, and the other end communicates with one end of the third air segment 3323. The other end of the third air segment 3323 communicates with the air outlet 320 of the drainer 30. A switch is disposed within the second air segment 3322.

[0155] It should be noted that one end of the second gas segment 3322 is in communication with the side wall of the first drainer air channel 331 , so that the gas in the first drainer air channel 331 can enter the second gas segment 3322 .

[0156] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figures 19a-20b As shown, the switch element includes a first piston 3324 and a second elastic member 3325. The first piston 3324 is capable of sliding along the second air section 3322. The first piston 3324 is provided with a first hole portion 3324a, a second hole portion 3324b, and a third hole portion 3324c. The first hole portion 3324a is provided on the end surface of the first piston 3324 near the third air section 3323, and the second hole portion 3324b and the third hole portion 3324L are provided on the side wall of the first piston 3324 with a gap. The first piston 3324 is provided with a first air-guiding channel and a second air-guiding channel. The first air-guiding channel connects the first hole portion 3324a with the second hole portion 3324b, and the second air-guiding channel connects the first hole portion 3324a with the third hole portion 3324c. The second elastic member 3325 is disposed in the second gas segment 3322 , and two ends of the second elastic member 3325 are respectively connected to the end surface of the first piston 3324 where the first hole 3324 a is disposed and the other end of the second gas segment 3322 .

[0157] Specifically, when the car needs to brake in deep water, the vacuum pump 20 is activated, and the gas generated by the vacuum pump 20 enters the housing air passage 213, the second connecting passage 225, the second guide passage 450, the gas passage 430, the air chamber 60, and the second drainer air passage 332 from the air outlet 212 of the vacuum pump 20, pushing the first piston 3324 to move. The second elastic member 3325 is compressed, so that the third hole portion 3324c of the first piston 3324 is connected to the first gas section 3321, as shown in FIG. Figure 19a and Figure 19b As shown, the other end of the gas channel 430 is connected to the gas outlet 320 of the drain 30 through the second drainer gas channel 332. The gas generated by the vacuum pump 20 can then be discharged to the gas outlet 320 of the drain 30 through the second drainer gas channel 332. As the density of the air discharged to the gas outlet 320 of the drain 30 increases, the air pressure at the gas outlet 320 of the drain 30 increases, thereby draining the water entering the gas outlet 320 of the drain 30 to the outside of the drain 30.

[0158] After the water in the outlet 320 of the drainer 30 is cleared, the gas pressure inside the air chamber 60 decreases, the compressive force on the second elastic member 3325 disappears, and the second elastic member 3325 returns to its original position, so that the first piston 3324 blocks the first gas section 3321 and the second gas section 3322. In turn, the other end of the gas channel 430 is blocked from the outlet 320 of the drainer 30. The gas generated by the vacuum pump 20 enters the housing air passage 213, the second connecting channel 225, and the second guide channel 450 from the outlet 212 of the vacuum pump 20. One end of the gas channel 430 pushes the guide rod 410 to extend relative to the first guide channel 440, and the extended guide rod 410 can cooperate with the rotating rotor 220 and the second spiral groove 226 on the inner wall of the rotor 220, so that the guide rod 410 first spirally rises from the second groove 223 along the first groove portion 2261 of the second spiral groove 226, driving the push rod 40 to rise, so that the seal 420 at the other end of the push rod 40 is separated from the gas outlet 320 of the drainer 30, so that the gas generated by the vacuum pump 20 can be discharged from the gas outlet 320 of the drainer 30. As the push rod 40 rises, the volume of the air chamber 60 increases, thereby reducing the air pressure in the air chamber 60. The air pressure outside the drainer 30 is greater than the air pressure in the air chamber 60, pushing the first piston 3324 to move, and the second elastic member 3325 is stretched, so that the second hole portion 3324b of the first piston 3324 is connected to the first gas section 3321, as shown in FIG. Figure 20a and Figure 20bAs shown, the other end of the gas channel 430 is connected to the gas outlet 320 of the drainer 30 through the second drainer air channel 332, so that the gas enters the air chamber 60 from the gas outlet 320 of the drainer 30 through the second drainer air channel 332 to eliminate the air pressure difference between the outside of the drainer 30 and the inside of the air chamber 60.

[0159] When the guide rod 410 reaches the highest point of the first groove 2261 of the second spiral groove 226, it enters the second groove 2262 of the second spiral groove 226 and engages with the second groove 2262 of the second spiral groove 226, causing the guide rod 410 to spiral downward along the second groove 2262 of the second spiral groove 226, driving the push rod 40 downward. This decreases the volume of the air chamber 60, causing the compressed gas in the air chamber 60 to enter the second drainer air passage 332. The tensile force on the second elastic member 3325 disappears, causing the second elastic member 3325 to return to its original position, blocking the first piston 3324 from the first and second air sections 3321 and 3322. This in turn blocks the other end of the gas passage 430 from the outlet 320 of the drainer 30. Furthermore, the compressed gas in the air chamber 60 also enters the first drainer air passage 331, pushing the partition assembly back to its original position.

[0160] More specifically, the second elastic member 3325 can be configured as a spring, a spring sheet, or other elastic component. Preferably, to ensure that the second elastic member 3325 has better recovery performance and occupies less space, the second elastic member 3325 in this embodiment is configured as a spring. Furthermore, the ends of the spring can be connected to the first piston 3324 and the second gas section 3322 via a fixed connection method such as a snap connection, a screw connection, or a weld. The specific connection method can be determined based on actual design and usage requirements and is not specifically limited in this embodiment.

[0161] It should be noted that, compared with setting other switch components such as a valve body, setting the switch components as the first piston 3324 and the second elastic component 3325 can make the structure of the automobile vacuum pump drainage mechanism simpler.

[0162] This embodiment also provides a vehicle vacuum pump drainage mechanism, such as Figures 19a-20b As shown, the barrier assembly is located near the other end of the first drainer air passage 331, and a stopper is provided at the other end of the first drainer air passage 331. The barrier assembly includes a second piston 3311, a barrier 3312, and a third piston 3313. The two ends of the barrier 3312 abut against the opposing end surfaces of the second and third pistons 3311 and 3313, respectively.

[0163] Specifically, the stopper can prevent the partition assembly from sliding out from the other end of the first drain air passage 331 .

[0164] More specifically, the isolation member 3312 can be set to a high-density, incompressible and flowable object such as mercury or fine sand. The specific setting can be based on actual design and usage requirements, and this embodiment does not make any specific limitations on this.

[0165] It should be noted that, compared with other structures, the partition assembly is configured as the second piston 3311, the isolation member 3312 and the third piston 3313, which can make the structure of the automobile vacuum pump drainage mechanism simpler.

[0166] This embodiment provides an automobile, comprising any one of the above-mentioned automobile vacuum pump drainage mechanisms.

[0167] Specifically, the air inlet 211 of the vacuum pump 20 of the automobile vacuum pump drainage mechanism is communicated with the vacuum brake booster of the automobile, so that the vacuum brake booster can be in a certain vacuum degree.

[0168] It should be noted that the automobile vacuum pump drainage mechanism of the automobile can effectively prevent water from entering the vacuum pump 20, thereby effectively preventing the vacuum pump 20 from malfunctioning due to water entering.

[0169] Although the present invention has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by those skilled in the art that the above description is provided as a further detailed description of the present invention in conjunction with specific embodiments thereof, and that the specific implementation of the present invention is not limited to these descriptions. Those skilled in the art may make various changes in form and details, including simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A vehicle vacuum pump drainage mechanism, comprising a vacuum pump, wherein the vacuum pump comprises a housing with a cavity formed therein, and the housing is provided with an air inlet and an air outlet communicating with the cavity; characterized in that: The automobile vacuum pump drainage mechanism also includes a drainer, a connecting pipe and a push rod; wherein, The drainer is provided with a cavity, and the drainer is provided with an air inlet and an air outlet communicating with the cavity in the drainer, and the two ends of the connecting pipe are respectively communicated with the air outlet of the vacuum pump and the air inlet of the drainer; The vacuum pump further includes a rotor and a driving component, wherein the rotor and the driving component are both disposed in the cavity of the housing, and the driving component is used to drive the rotor to rotate relative to the housing; A guide rod is provided at one end of the push rod and extends through the one end of the push rod to the inside of the rotor; a first spiral groove is provided on the inner side wall of the rotor, and a first groove and a second groove are respectively provided at positions corresponding to the two ends of the first spiral groove on the inner side wall of the rotor, and the two ends of the first spiral groove are transitionally connected to one end of the first groove and one end of the second groove respectively; the rotation of the rotor can link the guide rod to move between the first groove and the second groove through the first spiral groove, so as to link the push rod to move relative to the housing in the axial direction of the rotor; The other end of the push rod is provided with a seal, and is provided in the cavity of the drainer, and the seal is adapted to the air outlet of the drainer; and when the guide rod is located in the first groove, the seal is separated from the air outlet of the drainer, so that the cavity of the drainer is connected with the outside of the drainer through the air outlet; when the guide rod is located in the second groove, the seal is sealed with the air outlet of the drainer, so that the cavity of the drainer is blocked from the outside of the drainer through the air outlet.

2. The automobile vacuum pump drainage mechanism according to claim 1, characterized in that: The driving component is capable of driving the vacuum pump to work and driving the rotor to rotate; A gas channel is provided inside the push rod, and one end of the gas channel extends to the one end of the push rod, and the other end of the gas channel extends to the other end of the push rod; A first guide channel is provided at one end of the gas channel, which is perpendicular to and connected to the one end of the gas channel; the guide rod is provided in the first guide channel, and a first elastic member is provided in each of the first groove and the second groove, and the guide rod can be extended or retracted relative to the first guide channel; When the guide rod is extended relative to the first guide channel, the rotation of the rotor can link the guide rod to move between the first groove and the second groove through the first spiral groove; when the guide rod is retracted relative to the first guide channel, the rotation of the rotor cannot link the guide rod to move; A protrusion is provided on the inner side wall of the drainer, and a first drainer air channel is provided on the protrusion. One end of the first drainer air channel is connected to the other end of the gas channel, and the other end of the first drainer air channel is connected to the air outlet of the drainer. A partition assembly is also provided in the first drainer air channel, and the partition assembly is capable of moving along the first drainer air channel. When the guide rod is located in the first groove and the pressure at the other end of the first drainer air channel is greater than the pressure at the one end of the first drainer air channel, the partition assembly moves toward the one end of the first drainer air channel, so that the pressure in the air channel increases, the guide rod extends relative to the first guide channel, and the first guide channel is communicated with the cavity of the vacuum pump; When the guide rod is located in the first spiral groove or the second groove, the first guide channel is not connected to the cavity of the vacuum pump; When the push rod moves relative to the housing to cause the sealing member to move toward the air outlet of the drain, the partition assembly moves toward the other end of the first drain air passage.

3. The automobile vacuum pump drainage mechanism according to claim 2, characterized in that: The sealing member includes a base and an extension portion, one side of the base portion is connected to the other end of the push rod and is in communication with the other end of the gas channel; the extension portion includes a first portion and a second portion, and one end of the first portion is connected to one end of the base portion, and the other end extends toward the gas outlet of the drainer in a direction perpendicular to the base portion and is connected to one end of the second portion, and the second portion is adapted to the gas outlet of the drainer; An air chamber is formed between the other side of the base, one side of the first part, the end surface of the protrusion on which the first drainer air channel is provided, and the inner side wall of the drainer, and the first drainer air channel is connected to the other end of the gas channel through the air chamber.

4. The automobile vacuum pump drainage mechanism according to claim 2 or 3, characterized in that: The shell is provided with a shell air passage, and one end of the shell air passage is communicated with the gas outlet of the vacuum pump, and the other end of the shell air passage and the one end of the gas channel can be switched between blocking and communicating.

5. The automobile vacuum pump drainage mechanism according to claim 4, characterized in that: The one end of the gas channel is further provided with a second guide channel perpendicular to and connected to the one end of the gas channel, and the second guide channel is further away from the end surface of the one end of the push rod than the first guide channel; A first connecting channel and a second connecting channel are provided between the inner side wall and the outer side wall of the rotor; a flow guide channel is provided inside the guide rod, the flow guide channel is L-shaped, and one end of the flow guide channel extends to an end of the guide rod close to the gas channel, so that the one end of the flow guide channel is connected to the one end of the gas channel; the other end of the flow guide channel extends to the side wall of the guide rod, and, When the guide rod is located in the first groove, the other end of the guide channel is communicated with one end of the first connecting channel, and the other end of the first connecting channel is communicated with the other end of the housing air channel; When the guide rod is located in the second groove, one end of the second connecting channel is communicated with the second guide channel, and the other end of the second connecting channel is communicated with the other end of the housing air channel.

6. The automobile vacuum pump drainage mechanism according to claim 5, characterized in that: A second spiral groove is further provided on the inner side wall of the rotor. The second spiral groove is arranged opposite to the first spiral groove and includes a first groove portion and a second groove portion. One end of the first groove portion transitionally connects with the other end of the second groove portion, the other end of the first groove portion spirally rises and transitionally connects with one end of the second groove portion, and the other end of the second groove portion spirally descends and transitionally connects with the other end of the first groove. A second drainer air channel is further provided on the protrusion of the drainer, and one end of the second drainer air channel is communicated with the other end of the gas channel via an air chamber, and the other end of the second drainer air channel is communicated with the gas outlet of the drainer, and the other end of the second drainer air channel is closer to the push rod than the other end of the first drainer air channel; the sealing member is closer to the push rod than the other end of the second drainer air channel; A switch is further provided in the air passage of the second drainer, so that the other end of the gas passage and the air outlet of the drainer are switched between being blocked and being connected.

7. The automobile vacuum pump drainage mechanism according to claim 6, characterized in that: The second drainer air duct includes a first air segment, a second air segment and a third air segment, wherein one end of the first air segment is connected to the air chamber, and the other end is connected to the side wall of the second air segment, one end of the second air segment is connected to the side wall of the first drainer air duct, and the other end is connected to one end of the third air segment, and the other end of the third air segment is connected to the air outlet of the drainer; and the switch is arranged in the second air segment.

8. The automobile vacuum pump drainage mechanism according to claim 7, characterized in that: The switch member includes a first piston and a second elastic member, and the first piston is capable of sliding along the second air segment; The first piston is provided with a first hole portion, a second hole portion, and a third hole portion, wherein the first hole portion is provided on the end surface of the first piston close to the third gas section, and the second hole portion and the third hole portion are provided on the side wall of the first piston with a gap therebetween; a first air guiding channel and a second air guiding channel are provided in the first piston, and the first air guiding channel is connected to the first hole portion and the second hole portion, and the second air guiding channel is connected to the first hole portion and the third hole portion; The second elastic member is disposed in the second air segment, and two ends of the second elastic member are respectively connected to the end surface of the first piston where the first hole is disposed and the other end of the second air segment.

9. The automobile vacuum pump drainage mechanism according to any one of claims 5 to 8, characterized in that: The partition assembly is located near the other end of the first drainer air passage, and a stopper is provided at the other end of the first drainer air passage; The partition assembly includes a second piston, an isolation member, and a third piston, and both ends of the isolation member are respectively in contact with opposite end surfaces of the second piston and the third piston.

10. An automobile, characterized in that: It comprises the automobile vacuum pump drainage mechanism as described in any one of claims 1-9.

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