CN207989699U - Gear box casing - Google Patents
Gear box casing Download PDFInfo
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- CN207989699U CN207989699U CN201820431306.6U CN201820431306U CN207989699U CN 207989699 U CN207989699 U CN 207989699U CN 201820431306 U CN201820431306 U CN 201820431306U CN 207989699 U CN207989699 U CN 207989699U
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- oil leak
- leak hole
- venting channels
- gear box
- box casing
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Abstract
The utility model provides a kind of gear box casing, side wall and bottom wall including surrounding accommodating chamber, it further include the ventilation device being arranged on the side wall, the ventilation device includes the first oil leak hole, second oil leak hole and venting channels, one end of first oil leak hole and one end of second oil leak hole are connected to accommodating chamber inside, the other end of first oil leak hole and the other end of second oil leak hole are connected to the venting channels, it is connected to outside the venting channels and the accommodating chamber, the lubricating oil entered in the venting channels by first oil leak hole is flowed back into via second oil leak hole inside the accommodating chamber.The volume of gearbox described in the utility model reduces, and occupied space is smaller, and simple in structure, and manufacture and processing are simple, at low cost.
Description
Technical field
The utility model is related to technical field of vehicle, more particularly to a kind of gear box casing.
Background technology
As shown in Figure 1, currently, venthole 5 is usually provided on gear box casing in the market, so that in transmission housing body
Portion is connected to outside atmosphere.When the high-speed gear operating in gearbox, which generates high temperature, makes pressure rise in entire gearbox, become
Pressure inside fast case can be connected to by venthole 5 with outside atmosphere, realize internal and external pressure balance.In addition, in gearbox
By the way of lubricating oil splash lubrication, lubricating oil may be leaked gear by venthole 5.Therefore, as shown in Figure 1, becoming
The recessed portion 6 being recessed outward is formed on fast tank shell, venthole 5 is generally arranged at the bottom of recessed portion 6, and in recessed portion
6 top is equipped with the oil baffle 7 that shape matches, and to cover the open top of recessed portion 6, lubricating oil is blocked in realization
Function.But in order to realize the ventilatory function of venthole 5, certain gap is reserved between oil baffle 7 and shell, it is most of
Lubricating oil kept off outside recessed portion 6 by oil baffle 7, even if there is partial lubrication fluid to enter recessed portion 6 by gap, but moisten
The splashing speed of lubricating oil liquid can also substantially reduce, and can flow back to transmission internal again by gap along the wall of recessed portion 6,
To realize the function of oil-leakage-prevention.Wherein, oil baffle 7 is fastened to by bolt 8 on gear box casing.
Above-mentioned gear box casing can be protruded outward in the position of recessed portion 6 due to the presence of recessed portion 6, be led to gearbox
Volume is larger and complicated, can occupy extra assembly space, be unfavorable for miniaturization and lightweight.In addition, increasing in gearbox
Add 8 two parts of oil baffle 7 and bolt, increases exploitation and manufacturing cost, while also needing to process spiral shell on gear box casing
Pit 9 increases manufacturing procedure.
Utility model content
In view of this, the utility model is directed to a kind of gear box casing, so that the volume of gearbox reduces, occupy empty
Between it is smaller and simple in structure, manufacture and processing are simple, at low cost.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of gear box casing, including surround the side wall and bottom wall of accommodating chamber, further include be arranged on the side wall it is logical
Depressed structure, the ventilation device include the first oil leak hole, the second oil leak hole and venting channels, one end of first oil leak hole and
One end of second oil leak hole is connected to accommodating chamber inside, and the other end of first oil leak hole and described second is let out
The other end of oilhole is connected to the venting channels, is connected to outside the venting channels and the accommodating chamber, by described first
The lubricating oil that oil leak hole enters in the venting channels is flowed back into via second oil leak hole inside the accommodating chamber.
Further, the central axis of the venting channels and central axis of second oil leak hole is coaxial and substantially edge
Vertical direction extends, and second oil leak hole is located at the lower section of the venting channels.
Further, the central axis upright of the central axis and the venting channels of first oil leak hole.
Further, sprocket drive spindle mounting hole, the central axis of the venting channels and described the are formed on the bottom wall
The axis vertical take-off of the central axis of two oil leak holes and the gear shaft mounting hole, the central axis of first oil leak hole with it is described
The axis of gear shaft mounting hole is parallel.
Further, the aperture of first oil leak hole and the aperture of second oil leak hole are respectively less than the venting channels
Diameter.
Further, the aperture of first oil leak hole and the aperture of second oil leak hole are 5~8mm, the ventilation
A diameter of 10~15mm in channel.
Further, the external port of the venting channels is provided with breather plug.
Further, the ventilation device is casting and forming.
Further, first oil leak hole is tapered towards the venting channels along center axis, second draining
Hole is along center axis towards the venting channels flaring, and the venting channels are along center axis towards outside the accommodating chamber
Flaring.
Compared with the existing technology, gear box casing described in the utility model has the advantage that：
Transmission internal space is by the first oil leak hole of ventilation device described in the utility model, the second oil leak hole and leads to
Gas channel is connected to outside, when the high-speed gear operating in gearbox, which generates high temperature, makes pressure rise in entire gearbox, is become
Pressure inside fast case can be connected to by ventilation device with outside atmosphere, realize internal and external pressure balance, realize ventilatory function.Separately
Outside, it is splashed to the lubricating oil in venting channels by the first oil leak hole to be flowed back into inside accommodating chamber by the second oil leak hole, prevent
Stop lubricating oil to leak, realizes anti-leak function.The ventilation device small volume of the utility model, occupies little space, and
Recessed portion need not be set on gear box casing so that the volume of gearbox entirety reduces, and is conducive to vehicle space carrying.Together
When, the structure of gear box casing is simple, and parts are few, and manufacture and processing are simple, at low cost.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.
In attached drawing：
Fig. 1 is the stereogram of the gear box casing described in the prior art；
Fig. 2 is the stereogram of the gear box casing described in the utility model embodiment；
Fig. 3 is the partial sectional view of Fig. 2.
Reference sign：
1- ventilation devices, the first oil leak holes of 11-, the second oil leak holes of 12-, 13- venting channels, 2- side walls, 3- bottom walls, 31-
Gear shaft mounting hole, 4- accommodating chambers, 5- ventholes, 6- recessed portions, 7- oil baffles, 8- bolts, 9- threaded holes.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In addition, " vertical direction " that is previously mentioned in the embodiments of the present invention, refers under gearbox installation condition
The short transverse of vehicle.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figures 2 and 3, specific embodiment of the present utility model provides a kind of gear box casing, including surrounds appearance
Receive the side wall 2 and bottom wall 3 of chamber 4, further include the ventilation device 1 of setting on the side wall 2, ventilation device 1 include the first oil leak hole 11,
One end of second oil leak hole 12 and venting channels 13, one end of the first oil leak hole 11 and the second oil leak hole 12 in accommodating chamber 4
Portion is connected to, and the other end of the other end of the first oil leak hole 11 and the second oil leak hole 12 is connected to venting channels 13, venting channels
13 are connected to 4 outside of accommodating chamber, enter the lubricating oil in venting channels 13 via the second oil leak hole 12 by the first oil leak hole 11
It flows back into inside accommodating chamber 4.
First oil leak hole 11 of the transmission internal space by the ventilation device 1 of the utility model, 12 and of the second oil leak hole
Venting channels 13 are connected to outside, make pressure rise in entire gearbox when the high-speed gear operating in gearbox generates high temperature
When, the pressure of transmission internal can be connected to by ventilation device 1 with outside atmosphere, realize internal and external pressure balance, realize ventilation
Function.In addition, the lubricating oil being splashed in venting channels 13 by the first oil leak hole 11 can be flowed back by the second oil leak hole 12
Inside accommodating chamber 4, it is therefore prevented that lubricating oil leaks, and realizes anti-leak function.The ventilation device small volume of the utility model, accounts for
It is small with space, and recessed portion need not be set on gear box casing so that the volume of gearbox entirety reduces, and is conducive to vehicle
Space carrying.Meanwhile the structure of gear box casing is simple, parts are few, and manufacture and processing are simple, at low cost.
As shown in figure 3, further, the central axis of the central axis of venting channels 13 and the second oil leak hole 12 it is coaxial and
It extends substantially in the vertical direction, the second oil leak hole 12 is located at the lower section of venting channels 13.Under gearbox installation condition, ventilation is logical
Road 13 and the second oil leak hole 12 are in the state extended vertically, and the lubricating oil energy of venting channels 13 is entered by the first oil leak hole 11
It is enough to be slid back in accommodating chamber 4 downwards along the second oil leak hole 12, further prevent lubricating oil to leak.
As shown in figure 3, further, the central axis upright of the central axis and venting channels 13 of the first oil leak hole 11,
The lubricating oil being then splashed in venting channels 13 by the first oil leak hole 11 can bump against on the side wall of venting channels 13, so that it flies
It splashes speed to substantially reduce, and then lubricating oil can flow back to accommodating chamber 4 from the second oil leak hole 12, further increases anti-leak effect
Fruit.
As shown in Figures 2 and 3, further, sprocket drive spindle mounting hole 31, the gear shaft in gearbox are formed on bottom wall 3
In gear shaft mounting hole 31, and gear is mounted on gear shaft and circumferentially rotates, therefore the basic edge of lubricating oil
The tangential direction of gear flies out.The central axis of first oil leak hole 11 is parallel with the axis of gear shaft mounting hole 31 so that lubrication
Fluid is not easy to be splashed in venting channels 13, greatly reduces into the lubricating oil in ventilation device 1.In venting channels 13
The axis vertical take-off of mandrel line and the central axis and gear shaft mounting hole 31 of the second oil leak hole 12 so that returned by the second oil leak hole 12
The lubricating oil of stream can be fallen back on gear, and again serve to lubricating action.
As shown in figure 3, further, the aperture of the aperture of the first oil leak hole 11 and the second oil leak hole 12, which is respectively less than to ventilate, to be led to
The diameter in road 13 can let out the aperture of the first oil leak hole 11 and second under the premise of ensureing the ventilatory effect of ventilation device 1
The aperture of oilhole 12 is set as small as possible, to reduce the lubricating oil entered in ventilation device 1 to the greatest extent, and can also reduce entrance
The speed of lubricating oil in ventilation device 1.Be arranged two oil leak holes and by the diameter of venting channels 13 be set as slightly compared with
Greatly, it is ensured that preferable ventilatory effect.As a kind of specific implementation mode of the utility model, further, the first draining
The aperture in hole 11 and the aperture of the second oil leak hole 12 are 5~8mm, a diameter of 10~15mm of venting channels 13.
Further, the external port of venting channels 13 is provided with breather plug, and breather plug can be labyrinth type, both ensure in this way
Ventilatory effect, moreover it is possible to further increase oil-leakage-prevention effect.
Further, ventilation device 1 is casting and forming, and ventilation device 1 can be integrally formed with side wall 2 and bottom wall 3,
I.e. entire gear box casing integrally casting shaping so that manufacture and processing are simple, and manufacturing process is less, cost-effective.
As shown in figure 3, further, the first oil leak hole 11 is tapered towards venting channels 13 along center axis, and second lets out
Oilhole 12 along center axis towards 13 flaring of venting channels, venting channels 13 along center axis towards outside accommodating chamber 4 gradually
Expand.Since ventilation device 1 uses casting and forming, type may be used in the first oil leak hole 11, the second oil leak hole 12 and venting channels 13
Core stripping forming is demoulded using the structure of general conical, when can be in order to cast.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (9)
1. a kind of gear box casing, including surround the side wall (2) and bottom wall (3) of accommodating chamber (4), which is characterized in that further include setting
The ventilation device (1) on the side wall (2) is set, the ventilation device (1) includes the first oil leak hole (11), the second oil leak hole
(12) and venting channels (13), one end of first oil leak hole (11) and one end of second oil leak hole (12) with it is described
Connection inside accommodating chamber (4), the other end of first oil leak hole (11) and the other end of second oil leak hole (12) with
The venting channels (13) are connected to, and are connected to outside the venting channels (13) and the accommodating chamber (4), by first oil leak hole
(11) into the lubricating oil in the venting channels (13) accommodating chamber (4) is flowed back into via second oil leak hole (12)
It is internal.
2. gear box casing according to claim 1, which is characterized in that the central axis of the venting channels (13) and institute
The central axis for stating the second oil leak hole (12) is coaxial and extend substantially in the vertical direction, and second oil leak hole (12) is located at described
The lower section of venting channels (13).
3. gear box casing according to claim 2, which is characterized in that the central axis of first oil leak hole (11) with
The central axis upright of the venting channels (13).
4. gear box casing according to claim 3, which is characterized in that form sprocket drive spindle installation on the bottom wall (3)
Hole (31), the central axis of the venting channels (13) and the central axis of second oil leak hole (12) are pacified with the gear shaft
The axis vertical take-off of hole (31) is filled, the central axis of first oil leak hole (11) and the axis of the gear shaft mounting hole (31) are flat
Row.
5. gear box casing according to claim 1, which is characterized in that the aperture of first oil leak hole (11) and described
The aperture of second oil leak hole (12) is respectively less than the diameter of the venting channels (13).
6. gear box casing according to claim 5, which is characterized in that the aperture of first oil leak hole (11) and described
The aperture of second oil leak hole (12) is 5~8mm, a diameter of 10~15mm of the venting channels (13).
7. gear box casing according to claim 6, which is characterized in that the external port of the venting channels (13) is provided with
Breather plug.
8. gear box casing according to claim 1, which is characterized in that the ventilation device (1) is casting and forming.
9. gear box casing according to claim 8, which is characterized in that first oil leak hole (11) is along center axis
It is tapered towards the venting channels (13), second oil leak hole (12) along center axis towards the venting channels (13) gradually
Expand, the venting channels (13) are along center axis towards the external flaring of the accommodating chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820431306.6U CN207989699U (en) | 2018-03-28 | 2018-03-28 | Gear box casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820431306.6U CN207989699U (en) | 2018-03-28 | 2018-03-28 | Gear box casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207989699U true CN207989699U (en) | 2018-10-19 |
Family
ID=63829402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820431306.6U Active CN207989699U (en) | 2018-03-28 | 2018-03-28 | Gear box casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207989699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062968A (en) * | 2021-03-17 | 2021-07-02 | 东风商用车有限公司 | Universal integrated air passage arrangement structure of automatic gearbox and application method thereof |
-
2018
- 2018-03-28 CN CN201820431306.6U patent/CN207989699U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113062968A (en) * | 2021-03-17 | 2021-07-02 | 东风商用车有限公司 | Universal integrated air passage arrangement structure of automatic gearbox and application method thereof |
| CN113062968B (en) * | 2021-03-17 | 2022-08-12 | 东风商用车有限公司 | Universal integrated air passage arrangement structure of automatic gearbox and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191121 Address after: 071000 No.75, Dongsheng Road, Lianchi District, Baoding City, Hebei Province Patentee after: Beehive transmission technology Hebei Co., Ltd Address before: 071000 No. 2266 Chaoyang South Street, Hebei, Baoding Patentee before: Changcheng Automobile Co., Ltd. |
|
| TR01 | Transfer of patent right |