CN211820665U - Gearbox breather - Google Patents

Abstract

The utility model provides a gearbox breather belongs to gearbox technical field. It has solved the lower problem of current ventilation structure commonality. This gearbox breather, including the connector in the venthole that can imbed the gearbox, the connector includes a plurality of flexure strip, and the flexure strip homoenergetic draws close each other, has the clearance between per two adjacent flexure strips, has joint portion on the flexure strip, and the bar recess has been seted up in the outside of joint portion. This gearbox breather can improve the commonality of breather when guaranteeing breather and gearbox connection stability.

Description

Gearbox breather

Technical Field

The utility model belongs to the technical field of the gearbox, a gearbox breather is related to.

Background

In the running process of the automobile under different working environments, impurities, dust and water vapor are inevitably generated in the surrounding environment of the gearbox. The in-process that the car starts the parking, under the operating mode of difference, the temperature in the gearbox has the process of lift change, and simultaneously, the air can expand with heat and contract with cold along with the temperature variation in the gearbox, consequently can add on the gearbox and be equipped with the air vent structure or be equipped with the check valve in the gearbox box, the function of air vent structure makes the inside air of gearbox and outside air intercommunication, makes the atmospheric pressure of the former balanced with the latter.

And traditional gearbox ventilation structure only satisfies the demand of ventilating of variable speed, and when the inside temperature of gearbox dropped, inside air contraction, outside air flowed into the incasement through ventilation structure, when the vehicle travel in-process met bad stormy weather or road surface ponding, the water that very big probably tire belt was taken can get into inside the gearbox from the position of ventilating, leads to gearbox function failure, gear lubricating oil pollution and part corrosion to influence safety.

In response to the above problems, various transmissions have been developed:

for example, the chinese patent application (patent application No. 201721515057.0) discloses a novel ventilation structure for an automobile transmission, which comprises a ventilation pipe assembly, wherein the ventilation pipe assembly comprises a connector, a ventilation pipe, a ventilation plug and a buckle, the connector is used for connecting with a ventilation hole on the transmission, the connector is further connected with the ventilation pipe and the ventilation plug in sequence, and the tail end of the ventilation pipe is fixed on the whole automobile by the buckle.

The air vent of current gearbox is all seted up on the up end of gearbox, above-mentioned ventilation structure's design, can play certain waterproof dustproof effect, but the connector is in the air vent of direct embedding gearbox, because the size of the air vent of seting up on every gearbox is different, adopt above-mentioned connector to have led to this ventilation structure only to be applicable to a gearbox, lead to when the assembly, need produce not unidimensional ventilation structure according to the gearbox of different motorcycle types, the commonality of universal architecture has been reduced, and the connector does not set up guide structure, because the size and the connector size that need the air vent match, the precision design to the gearbox air vent is higher, the use convenience of connector has been reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided a gearbox breather, the utility model aims to solve the technical problem that: how to improve the universality and the use convenience of the aerator.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a gearbox breather, is including the connector in the venthole that can imbed the gearbox, its characterized in that, the connector includes a plurality of flexure strip, the flexure strip homoenergetic draws close each other, has the clearance between per two adjacent flexure strips, the joint portion has on the flexure strip, the bar recess has been seted up in the outside of joint portion.

The working principle is as follows: through the arrangement of the elastic sheet on the connecting head, when the connecting head is embedded into the vent hole, the connecting head can be rapidly embedded into the vent hole by the mutual approaching of the elastic sheets, the connecting head is telescopic at the moment, the strip-shaped groove of the clamping part can increase the elastic deformation of the elastic sheet on one hand, and on the other hand, a positioning strip in the gearbox can be embedded to play a role in positioning, so that the connecting stability of the connecting head and the gearbox is further improved, and the arrangement of the elastic sheet can improve the connecting stability of the connecting head by gradually drawing the elastic sheet into the vent hole when the vent hole of the gearbox has certain size deviation for different vehicle types, and the connecting head can be plugged into the vent hole after the elastic sheet is gradually drawn in, through the arrangement of the clamping part on the elastic sheet and the elastic sheet, the connecting head is positioned without adopting other positioning parts, and the use convenience of the connecting head is, thereby further improving the versatility of the aerator.

In foretell gearbox breather, still have the guide part on the elastic sheet, the guide part leans out the setting from the one end of keeping away from joint portion to the one end that is close to joint portion.

The setting of this structure can play the guide effect to the connector, need not manually fold all flexure strips in the installation just can will make the connector imbed the venthole of gearbox, further improvement the use convenience and the connection stability of connector.

In the transmission case breather, the guide part is provided with an inclined guide surface and a vertical abutting surface, and the abutting surface is arranged at one end close to the clamping part.

The setting of this structure, the spigot surface makes the embedding that the connector can be quick to the venthole in, and supports the setting of face, can make the flexure strip on the connector slowly resume open state, and the flexure strip also can play certain joint effect this moment to can be with the bar connected in that the more stable joint of part in the gearbox is in, further improvement the installation effectiveness of connector.

In foretell gearbox breather, this breather still includes the breather pipe, the connector still includes the connecting pipe, the protrusion is formed with a plurality of stoppers on the connecting pipe, the connecting pipe is embedded into in the one end of breather pipe and connecting pipe and breather pipe intercommunication, the stopper supports with the inside wall of breather pipe and leans on.

The breather pipe is the rubber tube, through the setting of spacing piece on the connecting pipe for be connected more firm between breather pipe and the connector, and can play the guide effect to being connected of breather pipe and connecting pipe, improved the installation effectiveness of breather pipe self, be the sealing connection of tight fit between breather pipe and the connecting pipe this moment, further improvement the leakproofness of breather ware.

In foretell gearbox breather, this breather still includes to ventilate and connects and cover establishes the shield on the joint of ventilating, the joint of ventilating includes the installation pipe of being connected with the other end of breather pipe and the dust tube that communicates with the installation pipe, installation pipe and breather pipe intercommunication, the tip of dust tube is equipped with the gas outlet, the tip setting of dust tube is in the shield, and the inner chamber and the gas outlet intercommunication of shield, the protruding dust board that forms on the dust tube, the space has between shield and the dust board, the inner chamber intercommunication of space and shield, the outside of dust tube is equipped with a plurality of dust chips that transversely crisscross the setting, the shield supports mutually with the dust chip and leans on.

The other end of joint and breather pipe ventilates is connected and is communicate through the installation union coupling, it still is provided with the dustproof pipe to ventilate to connect, the dustproof pipe can be with the air in the breather pipe through installation pipe and dustproof pipe intercommunication, the cover is equipped with the shield on the dustproof pipe, the gas outlet of dustproof pipe and the inner chamber intercommunication of shield this moment, through protruding formation dust board on the dustproof pipe, can carry out preliminary blocking to the dust, and have the space between shield and the dust board, the air inflow of dustproof pipe is to the inner chamber of shield and is discharged from the space this moment, and the outside of dustproof pipe is provided with a plurality of dustproof pieces, dustproof piece and shield this moment offset and lean on, can further support outer dust and the steam of shield, the waterproof dustproof effect of breather has been improved.

In foretell gearbox breather, the dust guard is divided into the multiunit, and every group dust guard all is located the same transverse section of dust pipe, has two at least dust guards in every group dust guard, has the ventilation duct between two adjacent dust guards of every group, and the multiunit dust guard is along dust pipe axial distribution, and every group dust guard is crisscross to be set up.

The setting that has the ventilation groove between the same transverse section's of dustproof pipe two adjacent dustproof pieces for in the air in the dustproof cover can flow into the space from the ventilation groove, the dustproof cover constitutes labyrinth design with the dustproof piece, the setting of above-mentioned structure, make setting up more even of dustproof piece, thereby can be better play waterproof dustproof effect, also made things convenient for the connection between dustproof pipe and the dustproof cover, improved the installation effectiveness of breather.

In the above transmission case breather, an opening wall of the ventilation groove is curved.

The setting of this structure can reduce the striking between air and the dustproof pipe for the circulation of air is more smooth and easy, has reduced the noise of breather when using.

In the gearbox breather, the side wall of each dustproof sheet is arc-shaped, and all the dustproof sheets are equal in size.

The setting of this structure has guaranteed the security when the installation, also can play the striking between reduction air and the dustproof piece, and further the noise that has reduced the breather when using plays noise reduction effect to the installation effectiveness of breather has been improved.

In the gearbox breather, a positioning cylinder is arranged at the bottom of the dustproof cover and embedded into the air outlet, and a chamfer is arranged at one end, close to the mounting pipe, of the dustproof cover.

The setting of a location section of thick bamboo can further play the positioning action to the shield, and the chamfer has played the guide effect, and then makes the connection of shield quick and stable more.

Compared with the prior art, this gearbox breather has the advantage: through having a plurality of flexure strips on the connector, and the flexure strip can draw close each other, when the gearbox to different motorcycle types, when the air vent of gearbox has certain size deviation, the connector accessible is filled in the air vent after drawing in the flexure strip gradually this moment, through the setting of joint portion on flexure strip and the flexure strip, can improve the stability that the connector is connected, need not adopt other setting elements to fix a position the connector, also further improvement the use convenience of connector, thereby further improvement the commonality of breather.

Drawings

Fig. 1 is a schematic structural view of the transmission breather of the present invention.

Fig. 2 is a schematic structural diagram of a connecting head in the transmission breather.

Fig. 3 is a cross-sectional view of the connection head in the transmission breather of the present invention.

Fig. 4 is a schematic structural view of a breather joint in the transmission breather.

Fig. 5 is a schematic structural view of a dust cap in the transmission breather of the present invention.

Fig. 6 is a cross-sectional view of the transmission breather with the breather fitting assembled with the dust cap.

In the figure, 1, a connector; 11. an elastic sheet; 111. a clamping part; 112. a guide portion; 113. a strip-shaped groove; 114. a guide surface; 115. an abutting surface; 12. a gap; 13. a connecting pipe; 131. a limiting block; 2. a seal ring; 3. a breather pipe; 4. a vent fitting; 41. installing a pipe; 411. positioning blocks; 42. a dust-proof pipe; 421. an air outlet; 422. a dust-proof sheet; 423. a ventilation slot; 424. a dust guard; 43. a void; 5. a dust cover; 51. a positioning cylinder; 52. and (6) chamfering.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in figure 1, the gearbox breather comprises a connector 1 which can be embedded into a vent hole of a gearbox, wherein a sealing ring 2 is sleeved on the connector 1.

Specifically, as shown in fig. 1-6, the connector 1 includes a plurality of elastic pieces 11, the elastic pieces 11 can be close to each other, a gap 12 is formed between every two adjacent elastic pieces 11, a clamping portion 111 and a guiding portion 112 are formed on each elastic piece 11, the guiding portion 112 is inclined outward from one end far away from the clamping portion 111 to one end close to the clamping portion 111, the clamping portion 111 is located between the sealing ring 2 and the guiding portion 112, and a strip-shaped groove 113 is formed in the outer side of the clamping portion 111.

The working principle is as follows: the existing vent hole of the gearbox is arranged at the upper end of the gearbox, the connector 1 is provided with the elastic sheet 11, when the connector 1 is embedded into the vent hole, the connector 1 can be quickly embedded into the vent hole by the mutual approach of the elastic sheet 11, at the moment, the connector 1 is telescopic, the sealing ring 2 is arranged, a certain sealing effect can be achieved, external dust or water vapor is prevented from directly entering the gearbox from the vent hole of the gearbox, the strip-shaped groove 113 of the clamping part 111 can increase the elastic deformation of the elastic sheet 11 on the one hand, on the other hand, the positioning strip in the gearbox can be embedded, the positioning effect is achieved, the connection stability of the connector 1 and the gearbox is further improved, and the elastic sheet 11 is arranged, when the gearbox is different in model, the vent hole of the gearbox has certain size deviation, at the moment, the connector 1 can be plugged into the vent hole after the elastic sheet 11 is gradually folded, and still have guide part 112 on the flexure strip 11, can lead to the connector 1 embedding air vent for in the quick embedding air vent of connector 1 ability, through the setting of above-mentioned guide part 112, joint portion 111 and sealing washer 2, can be when guaranteeing breather and gearbox connection stability further improvement the suitability of breather.

As shown in fig. 2 and 3, the guide portion 112 has an inclined guide surface 114 and a vertical abutting surface 115, and the abutting surface 115 is disposed at one end near the clamping portion 111.

As shown in fig. 1-3, the ventilator further comprises a ventilation pipe 3, the connector 1 further comprises a connecting pipe 13, a plurality of limiting blocks 131 are formed on the connecting pipe 13 in a protruding manner, the connecting pipe 13 is embedded into one end of the ventilation pipe 3, the connecting pipe 13 is communicated with the ventilation pipe 3, and the limiting blocks 131 are abutted to the inner side wall of the ventilation pipe 3.

As shown in fig. 1, 4, 5 and 6, the ventilator further comprises a ventilation joint 4 and a dust-proof cover 5 covering the ventilation joint 4, the ventilation joint 4 comprises a mounting pipe 41 connected with the other end of the ventilation pipe 3 and a dust-proof pipe 42 communicated with the mounting pipe 41, the mounting pipe 41 is provided with a raised positioning block 411, the positioning block 411 is abutted against the inner side wall of the ventilation pipe 3 and limits the ventilation pipe 3, the mounting pipe 41 is communicated with the ventilation pipe 3, the end part of the dust-proof pipe 42 is provided with an air outlet 421, the end part of the dust-proof pipe 42 is arranged in the dust-proof cover 5, and the inner cavity of the dust cover 5 is communicated with the air outlet 421, the dust pipe 42 is raised to form a dust baffle 424, a gap 43 is arranged between the dust cover 5 and the dust baffle 424, the gap 43 is communicated with the inner cavity of the dust cover 5, a plurality of dust-proof sheets 422 which are transversely staggered are arranged on the outer side of the dust pipe 42, and the dust cover 5 is abutted against the dust-proof sheets 422.

As shown in fig. 4, the dust-proof sheets 422 are divided into a plurality of groups, each group of dust-proof sheets 422 is located on the same transverse section of the dust-proof pipe 42, at least two dust-proof sheets 422 are arranged in each group of dust-proof sheets 422, a ventilation groove 423 is arranged between two adjacent dust-proof sheets 422 of each group, the plurality of groups of dust-proof sheets 422 are axially distributed along the dust-proof pipe 42, each group of dust-proof sheets 422 are staggered, the opening wall of the ventilation groove 423 is arc-shaped, the side wall of each dust-proof sheet 422 is arc-shaped, and.

As shown in fig. 4-6, the bottom of the dust cap 5 is provided with a positioning cylinder 51, the positioning cylinder 51 is inserted into the air outlet 421, and one end of the dust cap 5 close to the mounting tube 41 is provided with a chamfer 52.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (9)

1. The utility model provides a gearbox breather, is including connector (1) in the venthole that can imbed the gearbox, its characterized in that, connector (1) includes a plurality of flexure strip (11), flexure strip (11) homoenergetic draws close each other, has clearance (12) between per two adjacent flexure strips (11), joint portion (111) have on flexure strip (11), bar recess (113) have been seted up in the outside of joint portion (111).

2. The gearbox breather of claim 1, wherein the elastic sheet (11) further has a guide portion (112), and the guide portion (112) is inclined outward from an end far away from the clamping portion (111) to an end close to the clamping portion (111).

3. The gearbox breather of claim 2, wherein the guide portion (112) has an inclined guide surface (114) and a vertical abutment surface (115), the abutment surface (115) being disposed at an end of the guide portion (112) proximate the snap-in portion (111).

4. The gearbox breather of claim 1, 2 or 3, further comprising a breather pipe (3), wherein the connector (1) further comprises a connecting pipe (13), a plurality of limiting blocks (131) are formed on the connecting pipe (13) in a protruding manner, the connecting pipe (13) is embedded into one end of the breather pipe (3) and the connecting pipe (13) is communicated with the breather pipe (3), and the limiting blocks (131) are abutted against the inner side wall of the breather pipe (3).

5. The gearbox breather according to claim 4, further comprising a breather joint (4) and a dust cap (5) covering the breather joint (4), wherein the breather joint (4) comprises a mounting pipe (41) connected with the other end of the breather pipe (3) and a dust tube (42) communicated with the mounting pipe (41), the mounting pipe (41) is communicated with the breather pipe (3), an air outlet (421) is arranged at the end of the dust tube (42), the end of the dust tube (42) is arranged in the dust cap (5), the inner cavity of the dust cap (5) is communicated with the air outlet (421), a dust baffle plate (424) is formed by protruding the dust tube (42), a gap (43) is arranged between the dust cap (5) and the dust baffle plate (424), the gap (43) is communicated with the inner cavity of the dust cap (5), and a plurality of dust tabs (422) are transversely arranged in a staggered manner are arranged on the outer side of the dust tube (42), the dustproof cover (5) is abutted against the dustproof sheet (422).

6. The gearbox breather of claim 5, wherein the dust guard (422) is divided into a plurality of groups, each group of dust guard (422) is located on the same transverse section of the dust tube (42), at least two dust guards (422) are arranged in each group of dust guard (422), a ventilation groove (423) is formed between two adjacent dust guards (422) of each group, the plurality of groups of dust guard (422) are axially distributed along the dust tube (42), and each group of dust guard (422) is staggered.

7. The transmission breather of claim 6, wherein the vent groove (423) has an arcuate mouth wall.

8. The transmission breather of claim 5, wherein the side walls of the dust flaps (422) are arcuate, all dust flaps (422) being of equal size.

9. The gearbox breather of claim 5, wherein the bottom of the dust cover (5) is provided with a positioning cylinder (51), the positioning cylinder (51) is embedded into the air outlet (421), and one end of the dust cover (5) close to the mounting pipe (41) is provided with a chamfer (52).

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