Ventilation plug, transmission and vehicle
By designing the structure of the valve bonnet and valve core in the ventilation plug, and using the ball, damping groove and damping ribs to form a tortuous overflow channel, the problem of poor oil and gas condensation effect is solved, multiple condensation of oil and gas and slowing overflow is achieved, and dirt around the transmission housing is avoided.
Patent Information
- Application Number
- CN202422537477.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-07-04
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing ventilation plugs have poor condensation effect on oil and gas, causing oil and gas to condense around the transmission housing, causing dirt.
A ventilation plug is designed, including a valve cap and a valve core, and a first and second spheres are provided in the valve core. A tortuous overflow channel is formed through the damping groove and the damping ribs, and combined with the first and second air outlets, multiple condensation of oil and gas and slowing overflow are achieved.
It significantly enhances the condensation effect of oil and gas, reduces the condensation of oil and gas around the transmission housing, and avoids dirt.
Smart Images
Figure CN223063106U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of vehicles, and particularly relates to a breather plug, a transmission and a vehicle. Background Art
[0002] During the operation of a vehicle, the oil in the transmission will splash and volatilize during the process of temperature rise and gear rotation. The oil and gas will overflow through the vent hole of the breather plug of the transmission and condense around the housing of the transmission, causing dirt, which is easily regarded as oil leakage.
[0003] To solve this problem, the existing breather plug relies on a spring to press a thin sheet against the vent hole of the breather plug to achieve ventilation and condensation, but the condensation effect on the oil and gas is poor. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a breather plug, a transmission and a vehicle, aiming to solve the technical problem that the existing breather plug has a poor condensation effect on oil and gas.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0006] In a first aspect, the utility model provides a breather plug, comprising: a valve cap, which is provided with a plurality of first damping grooves and has a plurality of first damping ribs; a valve core, which is provided with a plurality of second damping grooves and has a plurality of second damping ribs, the main body of the valve core has a vent passage, and the vent passage has a first step and a second step arranged at intervals; a first sphere, which is arranged in the vent passage and is limited by the first step; and a second sphere, which is arranged in the vent passage and is limited by the second step, and the second sphere is closer to the valve cap than the first sphere in the central axis direction of the vent passage;
[0007] Wherein, the valve core has a first air outlet hole communicated with the vent passage, and the valve cap has a second air outlet hole communicated with the first air outlet hole; the first damping groove, the second damping rib, the second damping groove and the first damping rib form a zigzag overflow channel, and the overflow channel is communicated with the second air outlet hole.
[0008] In some possible implementation manners, the first air outlet hole is arranged at the second step of the valve core, and the second air outlet hole is arranged in the area of the valve cap close to the second step.
[0009] In some possible implementation manners, the first damping groove is adapted to the second damping rib and has a gap, and the second damping groove is adapted to the first damping rib and has a gap.
[0010] In some possible implementation manners, there are two sets of the first damping grooves, one set of the first damping ribs, two sets of the second damping grooves, and two sets of the second damping ribs; a first condensation cavity is formed between the main body of the valve core and the first damping rib, a second condensation cavity is formed between the first damping rib and an adjacent second damping rib, a third condensation cavity is formed between the two second damping ribs, and a fourth condensation cavity is formed between the second damping rib and the side wall of the valve cap; the first condensation cavity, the second condensation cavity, the third condensation cavity, and the fourth condensation cavity together constitute the overflow channel.
[0011] In some possible implementation manners, an overflow groove is formed at the end of the first damping rib, a side wall portion of the overflow groove is located in a region within the second damping groove, and a bottom wall of the overflow groove is located in a region outside the second damping groove.
[0012] In some possible implementation manners, the valve cap has a raised portion, and the second sphere is limited in a limiting space formed by the raised portion and the second step.
[0013] In some possible implementation manners, a water-blocking skirt is formed on the side wall of the valve cap, and the water-blocking skirt is inclined in a direction towards the valve core.
[0014] In some possible implementation manners, an inner diameter dimension of the first step is smaller than an inner diameter dimension of the second step, and an outer diameter dimension of the first sphere is smaller than an outer diameter dimension of the second sphere.
[0015] In some possible implementation manners, on a central axis of the ventilation passage, a maximum gap between the first sphere and the second sphere is smaller than a distance from a contact position of the first sphere with the first step to a lowest point on the central axis.
[0016] In some possible implementation manners, a threaded mounting portion is provided on a side of the valve core away from the second sphere, and the threaded mounting portion is configured to be adapted to a housing of a transmission.
[0017] In a second aspect, the present utility model further provides a transmission, including: a housing; and the ventilation plug according to any one of the above implementation manners, and the ventilation plug is provided on the housing.
[0018] In a third aspect, the present utility model further provides a vehicle, including the transmission according to any one of the above implementation manners.
[0019] The breather plug, transmission and vehicle provided by the present utility model have at least the following technical effects compared with the prior art: In the above breather plug, a first sphere and a second sphere are arranged in the valve core. The first sphere abuts against the first step under the action of gravity, which can block the ventilation passage, making the ventilation passage airtight. When the pressure inside the transmission is greater than the gravity of the first sphere, the first sphere is pushed away from the first step, and the ventilation passage can be ventilated. The second sphere is located at the second step and can block the oil and gas to a great extent. The space between the first sphere and the second sphere forms a condensation chamber, which can condense the oil and gas to a great extent, and slow down the overflow of the oil and gas through the relatively narrow passage formed by the first air outlet and the second air outlet. At the same time, the zigzag overflow passage formed by the first damping groove, the second damping rib, the second damping groove and the first damping rib can further slow down the overflow and multi-condense the oil and gas. The overall structure greatly enhances the condensation effect of the oil and gas, making the oil and gas not easily condense around the housing of the transmission and not easily cause dirt. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0021] Figure 1 FIG. is a three-dimensional sectional view of the breather plug provided by an embodiment of the present utility model when installed on the housing of the transmission;
[0022] Figure 2 is Figure 1 an overall top view of the breather plug shown;
[0023] Figure 3 is Figure 2 a sectional view taken along line A-A of the breather plug shown;
[0024] Figure 4 is Figure 2 a sectional view taken along line B-B of the breather plug shown.
[0025] Description of the reference numerals:
[0026] 1. Breather plug, 10. Valve cap, 11. First damping groove, 12. First damping rib, 121. Overflow groove, 13. Second air outlet hole, 14. Bulge, 15. Water retaining skirt, 20. Valve core, 21. Second damping groove, 22. Second damping rib, 23. Vent passage, 231. First step, 232. Second step, 24. First air outlet hole, 25. Threaded mounting part, 30. First sphere, 40. Second sphere, S. Overflow channel, S1. First condensation chamber, S2. Second condensation chamber, S3. Third condensation chamber, S4. Fourth condensation chamber, L. Central axis, 2. Housing. Detailed implementation manners
[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0028] It should be noted that when an element is referred to as being "fixed to", "fixed", "connected to", "connected", "disposed on", "disposed", "fixedly disposed on" another element, there may or may not be an intermediate element. When two elements are referred to as being "matched" or "adapted", the two elements may have common mechanical connection relationships such as abutting, clamping, sleeving, threaded connection, etc., which can be determined according to the conventional selection of those skilled in the art. In this article, "a plurality of" refers to two or more quantities; "several" refers to one or more quantities.
[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs.
[0030] Please refer to Figures 1 to 4 together, and the breather plug, transmission and vehicle provided by the embodiments of the present utility model will be described in detail below.
[0031] Please refer to Figures 1 to 4 , the embodiment of the present utility model provides a breather plug 1, including: a valve cap 10, which is provided with several first damping grooves 11 and has several first damping ribs 12; a valve core 20, which is provided with several second damping grooves 21 and has several second damping ribs 22, and the main body of the valve core 20 has a vent passage 23, and the vent passage 23 has a first step 231 and a second step 232 arranged at intervals; a first sphere 30, which is disposed in the vent passage 23 and is limited by the first step 231; and a second sphere 40, which is disposed in the vent passage 23 and is limited by the second step 232, and the second sphere 40 is closer to the valve cap 10 than the first sphere 30 in the direction of the central axis L of the vent passage 23.
[0032] Among them, the valve core 20 has a first air outlet hole 24 communicating with the air vent passage 23, and the valve cap 10 has a second air outlet hole 13 communicating with the first air outlet hole 24; the first damping groove 11, the second damping rib 22, the second damping groove 21, and the first damping rib 12 form a zigzag overflow passage S, and the overflow passage S communicates with the second air outlet hole 13.
[0033] Specifically, the number of the first damping grooves 11 and the second damping ribs 22 is the same, and can be one, two, three or more, and the number of the second damping grooves 21 and the first damping ribs 12 is the same, and can be one, two, three or more.
[0034] Under the action of gravity, the first sphere 30 can abut against the first step 231, at this time the air vent passage 23 is closed, so that the air vent passage 23 is not ventilated. When the pressure inside the transmission is greater than the gravity of the first sphere 30, the first sphere 30 is pushed away from the first step 231, and the oil and gas in the air vent passage 23 can flow into the space between the first sphere 30 and the second sphere 40 from the gap between the first sphere 30 and the first step 231. The space between the first sphere 30 and the second sphere 40 forms a condensation cavity, which can condense the oil and gas to a large extent, and then flow into the relatively narrow passage formed by the first air outlet hole 24 and the second air outlet hole 13 to slow down the overflow of the oil and gas, so as to further slow down the overflow from the overflow passage S.
[0035] The zigzag overflow passage S formed by the first damping groove 11, the second damping rib 22, the second damping groove 21, and the first damping rib 12 can further slow down the overflow of the oil and gas and perform multiple condensations, and a large degree of condensation effect is achieved during the overflow process.
[0036] In addition, in the area outside the second air outlet hole 13, the main bodies of the valve cap 10 and the valve core 20 are in close contact and can be connected and fixed together by plastic welding.
[0037] The vent plug 1 provided by the embodiment of the present utility model has at least the following technical effects compared with the prior art: In the above-mentioned vent plug 1, a first sphere 30 and a second sphere 40 are arranged in the valve core 20. The first sphere 30 abuts against the first step 231 under the action of gravity, and can close the vent passage 23, making the vent passage 23 airtight. When the pressure inside the transmission is greater than the gravity of the first sphere 30, the first sphere 30 is pushed away from the first step 231, and the vent passage 23 can be ventilated. The second sphere 40 is located at the second step 232 and can block the oil and gas to a large extent. The space between the first sphere 30 and the second sphere 40 forms a condensation chamber, which can condense the oil and gas to a large extent, and slow down the overflow of the oil and gas through the relatively narrow passage formed by the first air outlet 24 and the second air outlet 13. At the same time, the zigzag overflow passage S formed by the first damping groove 11, the second damping rib 22, the second damping groove 21, and the first damping rib 12 can further slow down the overflow of the oil and gas and perform multiple condensations. The overall structure greatly enhances the condensation effect of the oil and gas, making it difficult for the oil and gas to condense around the transmission housing 2 and not easily causing dirt.
[0038] The specific structures of the valve cap 10, the valve core 20, the first sphere 30, and the second sphere 40 will be exemplified below.
[0039] Please refer to Figure 1 and Figure 3 In some embodiments, the first air outlet 24 is arranged at the second step 232 of the valve core 20, and the second air outlet 13 is arranged in the area of the valve cap 10 close to the second step 232. Specifically, at the position where the second step 232 is formed on the valve core 20, a first air outlet 24 is formed which is inclined with respect to the central axis L. This position is relative to the position between the first step 232 and the second step 232. On the one hand, it can delay the overflow of the oil and gas and increase the condensation time, and on the other hand, it can also shorten the length of the first air outlet 24 and reduce the possibility of blockage.
[0040] Of course, in other embodiments, the first air outlet 24 can be selected to be arranged at a position other than the second step 232, and no limitation is imposed thereon.
[0041] Please refer to Figure 1 、 Figure 3 and Figure 4 In some embodiments, the first damping groove 11 and the second damping rib 22 are adapted and have a gap, and the second damping groove 21 and the first damping rib 12 are adapted and have a gap. Specifically, the end of the second damping rib 22 is located in the first damping groove 11 to form damping; the end of the first damping rib 12 is located in the second damping groove 21 to form damping. The above adaptation method can increase the difficulty of oil and gas overflow, thereby increasing the condensation time of the oil and gas and improving the condensation effect of the oil and gas.
[0042] Of course, in other embodiments, the end of the second damping rib 22 can be disposed close to the first damping groove 11 but not within the first damping groove 11. The second damping rib 22 can also be disposed obliquely with respect to the first damping groove 11. Similarly, the first damping rib 22 and the second damping groove 21 can also be arranged in this way, and no limitation is imposed thereon.
[0043] Please refer to Figure 1 、 Figure 3 and Figure 4 , in some embodiments, there are two sets of the first damping grooves 11, one set of the first damping ribs 12, two sets of the second damping grooves 21, and two sets of the second damping ribs 22; a first condensation cavity S1 is formed between the main body of the valve core 20 and the first damping rib 12, a second condensation cavity S2 is formed between the first damping rib 12 and an adjacent second damping rib 22, a third condensation cavity S3 is formed between the two second damping ribs 22, and a fourth condensation cavity S4 is formed between the second damping rib 22 and the side wall of the valve cap 10; the first condensation cavity S1, the second condensation cavity S2, the third condensation cavity S3, and the fourth condensation cavity S4 together constitute an overflow channel S.
[0044] In this embodiment, the valve cap 10 and the valve core 20 form four condensation cavities, which can block and condense the oil and gas to a great extent. When the oil and gas pass through the four condensation cavities, the passing speed can be greatly reduced, and a greater condensation effect can be achieved.
[0045] Of course, in other embodiments, the numbers of the first damping grooves 11, the first damping ribs 12, the second damping grooves 21, and the second damping ribs 22 can be other numbers, and no limitation is imposed thereon.
[0046] Please refer to Figure 1 and Figure 3 , in some embodiments, an overflow groove 121 is formed at the end of the first damping rib 12. The side wall of the overflow groove 121 is partially located in the area within the second damping groove 21, and the bottom wall of the overflow groove 121 is located in the area outside the second damping groove 21. It can be understood that in the Figure 3 shown direction of gravity, the bottom wall of the overflow groove 121 is higher than the side wall of the second damping groove 21. When the second damping groove 21 is filled with condensate, there is still a gap between the overflow groove 121 and the second damping groove 21, so as to ensure the overflow of the oil and gas.
[0047] Please refer to Figure 1 、 Figure 3 and Figure 4In some embodiments, the valve cap 10 has a raised portion 14, and the second sphere 40 is limited in the limited space formed by the raised portion 14 and the second step 232. Specifically, the raised portion 14 is hemispherical or spherical, and can partially surround the second sphere 40, so that the second sphere 40 is limited in the limited space between the raised portion 14 and the second step 232, and the central axis size of the valve core 20 does not need to be increased too much.
[0048] See also Figure 1 , Figure 3 and Figure 4 In some embodiments, a water retaining skirt 15 is formed on the side wall of the valve bonnet 10, and the water retaining skirt 15 is inclined toward the direction of the valve core 20. Specifically, the water retaining skirt 15 can be formed integrally with the valve bonnet 10, or can be connected and fixed together by laser welding. After the vent plug 1 is installed on the housing 2 of the transmission, the gap between the water retaining skirt 15 and the housing 2 of the transmission is small. When wading, the water flow rushes over, and most of the water flow is blocked by the valve bonnet 10. A smaller part of the water flow passes through the gap between the water retaining skirt 15 and the housing 2 of the transmission and continues to flow inside, but is then intercepted by the zigzag overflow channel S, and then flows back down, thereby preventing the water flow from passing through the vent plug 1 and entering the interior of the transmission, achieving a better water retaining effect.
[0049] See also Figure 1 , Figure 3 and Figure 4 In some embodiments, the inner diameter of the first step 231 is smaller than the inner diameter of the second step 232, and the outer diameter of the first sphere 30 is smaller than the outer diameter of the second sphere 40. In this embodiment, the outer diameter of the second sphere 40 is larger than the outer diameter of the first sphere 30, and the gravity of the second sphere 40 is greater than the gravity of the first sphere 30, so that when the first sphere 30 leaves the first step 231, the second sphere 40 can be ensured as much as possible not to leave the second step 232, and at the same time, the second sphere 40 can also be made to press against the first sphere 30, thereby ensuring a slow overflow speed.
[0050] See also Figure 1 , Figure 3 and Figure 4In some embodiments, on the central axis L of the air passage 23, the maximum gap between the first sphere 30 and the second sphere 40 is smaller than the distance between the first sphere 30 from the abutment of the first step 231 to the lowest point located on the central axis L. Specifically, the maximum gap between the first sphere 30 and the second sphere 40, that is, the gap between the first sphere 30 and the second sphere 40 when the first sphere 30 abuts the first step 231, at this time, the axial distance between the abutment of the first sphere 30 relative to the first step 231 to the lowest point of the first sphere 30 is greater than the gap between the first sphere 30 and the second sphere 40, so that when the first sphere 30 leaves the first step 231, it will not be higher than the first step 231 as a whole, but there is an overlapping portion between the first sphere 30 and the air passage 23 below the first step 231, thereby ensuring that the oil and gas have a smaller overflow speed as much as possible.
[0051] In addition, the first step 231 and the second step 232 may be in a right angle shape, a cone shape, or a curved shape, and there is no limitation to this.
[0052] See also Figure 1 , Figure 3 and Figure 4 In some embodiments, the valve core 20 has a threaded mounting portion 25 on one side away from the second sphere 40, and the threaded mounting portion 25 is configured to be adapted to the housing 2 of the transmission. In this embodiment, the threaded mounting portion 25 is specifically an external thread, which can be matched with the internal thread structure of the housing 2 of the transmission to achieve a close connection between the valve core 20 and the housing 2 of the transmission.
[0053] Of course, the vent plug 1 can also be installed on the transmission housing 2 by welding, riveting, clamping, etc., on the side of the valve core 20 away from the second sphere 40, and there is no limitation to this.
[0054] Based on the same inventive concept, the embodiment of the utility model also provides a transmission, including a housing 2; and a vent plug 1 as described in any of the above embodiments, and the vent plug 1 is arranged on the housing 2. Specifically, a boss is provided on the housing 2, and the boss can be formed integrally with the housing 2, or can be formed in a split type and then formed into a whole by connection. The vent plug 1 is specifically assembled on the boss, for example, by threaded matching, the boss has an internal thread, and the vent plug 1 has an external thread, and the vent plug 1 is locked by matching the internal thread and the external thread. Of course, the vent plug 1 can also be installed on the housing 2 by welding, riveting, clamping, etc. Since the transmission adopts the vent plug 1 as described in any of the above embodiments, it has the same technical effect as the above-mentioned vent plug 1, which will not be repeated here.
[0055] Based on the same inventive concept, an embodiment of the present utility model further provides a vehicle, which includes a transmission as described in any of the above embodiments. Of course, the vehicle may further include conventional mechanical, electronic, communication and other structures such as a vehicle body, a control unit, a power unit, etc., to form a vehicle with complete functions and achieve the normal use effect of the vehicle. Since the vehicle adopts the transmission as described in the above embodiments, and the transmission includes the breather plug 1 as described in any of the above embodiments, it has the same technical effects as the above breather plug 1, and will not be elaborated herein.
[0056] It can be understood that the various parts in the above embodiments can be freely combined or deleted to form different combined embodiments. The specific contents of each combined embodiment will not be elaborated herein. After this explanation, it can be considered that the description of the present utility model has recorded each combined embodiment and can support different combined embodiments.
[0057] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.
Claims
1. A breather plug, characterized in that, Comprising: A valve cap (10) having a plurality of first damping grooves (11) and a plurality of first damping ribs (12); A valve core (20) having a plurality of second damping grooves (21) and a plurality of second damping ribs (22), the main body of the valve core (20) having a ventilation passage (23), the ventilation passage (23) having a first step (231) and a second step (232) arranged at intervals; A first sphere (30) disposed in the ventilation passage (23) and limited by the first step (231); and A second sphere (40) disposed in the ventilation passage (23) and limited by the second step (232), the second sphere (40) being closer to the valve cap (10) than the first sphere (30) in the direction of the central axis (L) of the ventilation passage (23); Wherein, the valve core (20) has a first air outlet hole (24) communicating with the ventilation passage (23), and the valve cap (10) has a second air outlet hole (13) communicating with the first air outlet hole (24); the first damping groove (11), the second damping rib (22), the second damping groove (21), and the first damping rib (12) form a zigzag overflow channel (S), and the overflow channel (S) communicates with the second air outlet hole (13).
2. The breather plug according to claim 1, wherein The first air outlet hole (24) is disposed at the second step (232) of the valve core (20), and the second air outlet hole (13) is disposed in the area of the valve cap (10) close to the second step (232).
3. The breather plug according to claim 1, characterized in that, The first damping groove (11) is adapted to the second damping rib (22) and has a gap, and the second damping groove (21) is adapted to the first damping rib (12) and has a gap.
4. The breather plug according to claim 3, characterized in that, There are two groups of the first damping grooves (11), one group of the first damping ribs (12), two groups of the second damping grooves (21), and two groups of the second damping ribs (22); A first condensation cavity (S1) is formed between the main body of the valve core (20) and the first damping rib (12), a second condensation cavity (S2) is formed between the first damping rib (12) and an adjacent second damping rib (22), a third condensation cavity (S3) is formed between the two second damping ribs (22), and a fourth condensation cavity (S4) is formed between the second damping rib (22) and the side wall of the valve cap (10); the first condensation cavity (S1), the second condensation cavity (S2), the third condensation cavity (S3), and the fourth condensation cavity (S4) together constitute the overflow channel (S).
5. The breather plug according to any one of claims 1, 3, and 4, characterized in that, An overflow groove (121) is formed at the end of the first damping rib (12), a side wall of the overflow groove (121) is partially located in an area within the second damping groove (21), and a bottom wall of the overflow groove (121) is located in an area outside the second damping groove (21).
6. The breather plug according to claim 1, characterized in that, The valve cap (10) has a raised portion (14), and the second sphere (40) is limited in a limiting space formed by the raised portion (14) and the second step (232).
7. The breather plug according to claim 1, characterized in that, A water-blocking skirt (15) is formed on the side wall of the valve cap (10), and the water-blocking skirt (15) is inclined towards the direction of the valve core (20).
8. The breather plug according to claim 1, characterized in that, The inner diameter dimension of the first step (231) is smaller than that of the second step (232), and the outer diameter dimension of the first sphere (30) is smaller than that of the second sphere (40).
9. A transmission, characterized in that, Comprising: A housing (2); and a vent plug as described in any one of claims 1 to 8, the vent plug being provided in the housing (2).
10. A vehicle, characterized in that, Comprising a transmission as described in claim 9.