CN112555025A - Noise reduction baffle connection structure of engine - Google Patents
Noise reduction baffle connection structure of engine Download PDFInfo
- Publication number
- CN112555025A CN112555025A CN202011519071.4A CN202011519071A CN112555025A CN 112555025 A CN112555025 A CN 112555025A CN 202011519071 A CN202011519071 A CN 202011519071A CN 112555025 A CN112555025 A CN 112555025A
- Authority
- CN
- China
- Prior art keywords
- noise reduction
- sealing
- cylinder head
- fixing
- reduction baffle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/11—Thermal or acoustic insulation
- F02B77/13—Acoustic insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
- F02F11/002—Arrangements of sealings in combustion engines involving cylinder heads
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Gasket Seals (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a noise reduction baffle connecting structure of an engine, and belongs to the technical field of engines. It has solved the current noise reduction baffle connection structure's the unstable problem of connection. This noise reduction baffle connection structure of engine, the engine includes the cylinder head and sets up the noise reduction baffle outside the cylinder head, the fixed part has in the cylinder head, form the chain chamber between fixed part and the cylinder head inner wall, this noise reduction baffle connection structure includes the mounting, the mounting hole has been seted up on the cylinder head outer wall, the noise reduction baffle is passed in proper order to the one end of mounting, mounting hole and chain chamber and with fixed part fixed connection, the other end of mounting has the fixed edge of keeping off that compresses tightly the noise reduction baffle on the cylinder head outer wall, fixed keep off be equipped with between edge and the cylinder head can be to the sealed sealing member of mounting hole. This noise reduction baffle connection structure of engine makes noise reduction baffle and cylinder head be connected more stable, further promotion noise reduction baffle connection structure's stability.
Description
Technical Field
The invention belongs to the technical field of engines, and relates to a noise reduction baffle connecting structure of an engine.
Background
With the continuous development of science and technology, people use trip tools such as automobiles and motorcycles more and more, the more important part in the automobiles or motorcycles is the engine, the automobiles or motorcycles have NVH (noise, vibration and harshness) problems when running, and the engine is the main source for generating noise, so that noise reduction optimization needs to be carried out on each system of the engine. Because the noise generated by gear transmission occupies the main part of the noise of the whole engine, the noise generated by gear transmission can be effectively reduced to be diffused outwards by adding the noise reduction device at the front end of the gear chamber, and the noise of the whole engine is effectively reduced.
In view of the above problems, various noise reduction devices for a front end gear train of an engine have been developed:
for example, the Chinese patent application (patent application No. 201520096495.2) discloses a noise reduction device at the front end of an engine, which comprises a gear chamber, a gasket and a tightening bolt, wherein the noise reduction device is arranged at the front end of the gear chamber and is a sound insulation sponge fixed through a plastic cover plate, the sound insulation sponge and the plastic cover plate are arranged outside a gear chamber cover at the front end of the gear chamber, the shapes of the sound insulation sponge and the plastic cover plate are matched with the gear chamber cover, the sound insulation sponge is tightly pressed on the gear chamber cover through the plastic cover plate and is fixed through the gasket and the tightening bolt.
Above-mentioned structure falls its and makes an uproar through being provided with plastic cover plate and sound insulation sponge, and fix it in the outside of gear chamber cap, but owing to falling the in-process of making an uproar, the gear chamber also can take place in the vibration, and because the chain chamber that can supply the gear to place has in the gear chamber cap, the thickness of gear chamber cap is thinner, it vibrates easily to have leaded to the gear chamber cap, and only it is fixed through fastening bolt with plastic cover plate, can cause fastening bolt's not hard up in long-term use process, the stability of plastic cover plate and sound insulation sponge installation has been influenced.
Disclosure of Invention
The invention aims to provide a noise reduction baffle plate connecting structure of an engine aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to solve the unstable problem of connection of current noise reduction baffle connection structure.
The purpose of the invention can be realized by the following technical scheme:
the utility model provides a noise reduction baffle connection structure of engine, the engine includes cylinder head and the noise reduction baffle of setting outside the cylinder head, the fixed part has in the cylinder head, form the chain chamber between fixed part and the cylinder head inner wall, its characterized in that, this noise reduction baffle connection structure includes the mounting, the mounting hole has been seted up on the cylinder head outer wall, the one end of mounting pass noise reduction baffle, mounting hole and chain chamber in proper order and with fixed part fixed connection, the other end of mounting has the fixed edge of keeping off that compresses tightly the noise reduction baffle on the cylinder head outer wall, be equipped with the sealing member that can seal the mounting hole between fixed edge of keeping off and the cylinder head.
The noise reduction baffle is arranged outside the cylinder head, the outer wall of the cylinder head is provided with a mounting hole, one end of a fixing piece sequentially penetrates through the noise reduction baffle, the mounting hole and a chain cavity and is fixedly connected with a fixing part in the cylinder head, the other end of the fixing piece is provided with a fixing retaining edge, the noise reduction baffle is tightly pressed on the outer wall of the cylinder head by the fixing retaining edge, a sealing piece arranged between the fixing retaining edge and the cylinder head can seal the mounting hole, so that oil in the chain cavity is prevented from flowing out, the noise reduction baffle is tightly pressed on the cylinder head by extending one end of the fixing piece into the cylinder head and fixedly connecting the fixing part, two connecting points are arranged between the fixing piece and the cylinder head, the connecting strength between the fixing piece and the cylinder head is enhanced, the sealing performance of the chain cavity can be ensured, the connecting structure of the noise reduction baffle does not influence the installation and the use of internal parts of an engine, and the noise reduction baffle can be tightly pressed by the fixed connection of one end, the cylinder head outer wall has the other end of mounting reaction force outwards to make being connected between the one end of mounting and the fixed part can further tensioning, guaranteed stable being connected between the one end of mounting and the fixed part, can keep off simultaneously along compressing tightly on the cylinder head outer wall through the fixed of mounting, thereby make noise reduction baffle and cylinder head be connected more stable, further promotion noise reduction baffle connection structure's stability.
In the above-mentioned noise reduction baffle connection structure of the engine, the fixing member is a fixing bolt, and one end of the fixing bolt is provided with a sealing shoulder abutting against the side wall of the fixing portion and a connecting portion in threaded connection with the fixing portion.
Through with connecting portion and fixed part threaded connection, fixing bolt's connection is more convenient, and the setting of sealed fender shoulder for after connecting portion put in place, the mode that leans on through sealed fender shoulder and the lateral wall counterbalance of fixed part carries on spacingly, thereby has promoted fixing bolt connection's stability.
In the noise reduction baffle connecting structure of the engine, the fixing part is provided with the columnar connecting seat, the connecting seat is provided with a threaded hole for embedding the connecting part, a yielding groove is arranged between the connecting part and the sealing retaining shoulder, the hole wall of the threaded hole shields the notch of the yielding groove, and the end face of the sealing retaining shoulder is attached to the end face of the connecting seat.
Due to the arrangement of the connecting seat, the guide area between the connecting part and the fixing part is increased, and the connection stability of the connecting part and the fixing part is improved; and the position of the abdicating groove is arranged, so that the sealing retaining shoulder can be attached to the end face of the connecting seat along with the connection of the connecting part after the connecting part is in threaded connection with the connecting seat, the influence of the fillet between the sealing retaining shoulder and the connecting part is avoided, the sealing retaining shoulder cannot be attached to the end face of the connecting seat, and the connection stability of the fixing part and the fixing part is further improved.
In the above-mentioned noise reduction baffle connection structure of the engine, the sealing stop shoulder has a guide surface, the guide surface is a conical surface, and the guide surface gradually inclines outward from one end far away from the connection portion to one end close to the connection portion.
The setting of spigot surface for the diameter that whole sealed fender was shouldered increases gradually at the spigot surface part, thereby can make the terminal surface of connecting seat set up in the sealed centre that keeps off the shoulder tip, makes sealed fender shoulder and supporting of connecting seat support more stable, further promotion the stability that mounting and fixed part are connected.
In the above connection structure of the noise reduction partition plate of the engine, an annular seal groove is formed in the outer side wall of the seal member, and the noise reduction partition plate has a seal portion embedded in the seal groove.
The arrangement of the sealing grooves ensures that oil and air in the cylinder head cannot flow out from the fixed blocking edge or the gap of the noise reduction partition plate, so that the sealing performance of the noise reduction partition plate connecting structure after assembly is improved, and the use stability of the connecting structure is further improved.
In the noise reduction baffle connecting structure of the engine, the sealing element is a sealing washer, the sealing washer is sleeved on the fixing element, a plurality of sealing bulges are arranged on the end faces of two ends of the sealing washer, the sealing bulge at one end of the sealing washer is abutted against the outer wall of the cylinder head, the sealing bulge at the other end of the sealing washer is abutted against the fixed baffle edge, and the inner side wall of the sealing element is attached to the outer side wall of the fixing element.
The sealing member is seal ring, make the installation of sealing member more convenient, and adopt sealing material to make the sealed more stable of sealing member, sealed bellied setting, it is easier for the sealing member takes place to deform when the pressurized, can increase the area of contact of sealing member and cylinder head outer wall and the area of contact of sealing member and fixed fender edge after taking place to deform, thereby further promotion connection structure's sealed effect, and then promoted the stability that connection structure used.
In the above-mentioned noise reduction baffle connection structure of the engine, the mounting hole includes a mounting counter bore, and the sealing member abuts against a step surface of the mounting counter bore.
The arrangement of the mounting counter bore enables the protruding height of the fixing piece to be reduced as much as possible after the sealing piece is mounted, the sealing piece can be placed more conveniently, a pre-positioning effect can be achieved on the sealing piece, and therefore the mounting of the connecting structure is more convenient.
In the noise reduction baffle connecting structure of the engine, the mounting hole further comprises a through hole communicated with the mounting counter bore, the fixing piece is arranged on the mounting counter bore and the through hole in a penetrating mode, and a yielding gap is formed between the outer wall of the fixing piece and the hole wall of the through hole.
Due to the arrangement of the abdicating gap, the other end of the fixing piece does not need to be abutted against the outer wall of the cylinder head when being installed, so that the friction of the fixing piece when being installed is reduced, a larger installation space is provided for one end of the fixing piece, a certain error is allowed to exist in the assembling process, and the installation of the fixing piece is facilitated; meanwhile, the influence of the cylinder head on the other end of the fixing piece can be reduced, the vibration on the other end of the fixing piece and the vibration on the noise reduction partition plate are reduced, and the stability of the connecting structure is improved.
In the noise reduction partition connecting structure of the engine, at least one fixing buckle is arranged on the inner wall of the noise reduction partition, clamping grooves which are in one-to-one correspondence with the fixing buckles are formed in the outer wall of the cylinder head, and the fixing buckles can be embedded into the corresponding clamping grooves.
Through the setting of fixed buckle and draw-in groove, can carry out prepositioning to the noise reduction baffle, also increased the tie point between noise reduction baffle and the cylinder head, increased the joint strength of mounting, and the draw-in groove is seted up on the outer wall of cylinder head, and on not running through the cylinder head outer wall to make the cylinder head need not set up the sealing member here, further promotion the convenience and the stability of noise reduction baffle installation.
In the above connecting structure for the noise reduction partition plate of the engine, the fixing buckle is arranged at the upper end of the noise reduction partition plate, and the fixing piece is positioned at the lower end of the noise reduction partition plate.
All be provided with the tie point from top to bottom through subtracting the manic baffle for subtract the stability more of being connected of manic baffle and cylinder head.
Compared with the prior art, this noise reduction baffle connection structure of engine has following advantage:
1. one end of the fixing piece extends into the cylinder head and is fixedly connected with the fixing portion, the noise reduction partition plate is tightly pressed on the cylinder head, two connection points are arranged between the fixing piece and the cylinder head, the noise reduction partition plate can be tightly pressed through the fixed connection of one end of the fixing piece, the outer wall of the cylinder head has a reaction force pushing the other end of the fixing piece outwards, so that the connection between one end of the fixing piece and the fixing portion can be further tensioned, and the stable connection between one end of the fixing piece and the fixing portion is guaranteed.
2. Through being provided with the sealing member for fixed fender is through the mode that compresses tightly the noise reduction baffle in compressing tightly the sealing member in with the seal groove, has realized the sealed to the mounting hole.
Drawings
Fig. 1 is a schematic view of the assembled structure of the noise-reduction baffle connection structure of the present engine.
Fig. 2 is a side view of the noise-reduction baffle attachment structure of the present engine after assembly.
Fig. 3 is a cross-sectional view a-a of fig. 2.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is a sectional view of B-B in fig. 2.
Fig. 6 is a schematic view of the structure of a noise-reduction baffle in the noise-reduction baffle attachment structure of the present engine.
In the figure, 1, a cylinder head; 11. a fixed part; 11a, a connecting seat; 11a1, threaded hole; 12. mounting a counter bore; 12a, a step surface; 13. a card slot; 14. a chain cavity; 15. a through hole; 2. a fixing member; 21. fixing the blocking edge; 22. sealing the blocking shoulder; 22a, a guide surface; 23. a connecting portion; 24. a yielding groove; 3. a noise reduction baffle; 31. a sealing part; 32. fixing the buckle; 4. a seal member; 41. a sealing groove; 42. sealing the protrusion; 5. a abdication gap; 6. a cylinder cover; 7. and a sprocket.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in figure 1, the noise reduction clapboard connecting structure of the engine comprises a cylinder head 1 and a noise reduction clapboard 3 arranged outside the cylinder head 1, wherein a fixing part 11 is arranged in the cylinder head 1, a chain cavity 14 is formed between the fixing part 11 and the inner wall of the cylinder head 1, a cylinder cover 6 is arranged on the cylinder head 1, and the upper end of the noise reduction clapboard 3 is positioned outside the cylinder cover 6.
Specifically, as shown in fig. 1 to 6, the noise reduction partition connecting structure includes a fixing member 2, a mounting hole is formed in an outer wall of a cylinder head 1, one end of the fixing member 2 sequentially penetrates through the noise reduction partition 3, the mounting hole and a chain cavity 14 and is fixedly connected with a fixing portion 11, the other end of the fixing member 2 is provided with a fixing blocking edge 21 for pressing the noise reduction partition 3 against the outer wall of the cylinder head 1, and a sealing member 4 capable of sealing the mounting hole is arranged between the fixing blocking edge 21 and the cylinder head 1.
Arranging a noise reduction baffle 3 outside a cylinder head 1, arranging a mounting hole on the outer wall of the cylinder head 1, sequentially penetrating one end of a fixing piece 2 through the noise reduction baffle 3, the mounting hole and a chain cavity 14 and fixedly connecting the noise reduction baffle 3 with a fixing part 11 in the cylinder head 1, wherein the other end of the fixing piece 2 is provided with a fixing baffle edge 21, the fixing baffle edge 21 tightly presses the noise reduction baffle 3 on the outer wall of the cylinder head 1, a sealing piece 4 is arranged between the fixing baffle edge 21 and the cylinder head and can seal the mounting hole, so that oil in the chain cavity 14 is prevented from flowing out, one end of the fixing piece 2 extends into the cylinder head 1 and is fixedly connected with the fixing part 11, the noise reduction baffle 3 is tightly pressed on the cylinder head 1, two connecting points are arranged between the fixing piece 2 and the cylinder head 1, the connecting strength between the fixing piece 2 and the cylinder head 1 is enhanced, the sealing performance of the chain cavity 14 can be ensured, and the connecting structure of the noise reduction baffle 3 does not influence the installation and the use of, and can realize compressing tightly noise reduction baffle 3 through the fixed connection of mounting 2 one end, cylinder head 1 outer wall has the reaction force with the other end of mounting 2 outwards pushing, thereby make the connection between one end of mounting 2 and the fixed part 11 can further tensioning, guaranteed stable connection between one end of mounting 2 and the fixed part 11, simultaneously can keep off along 21 to compress tightly on cylinder head 1 outer wall through the fixed of mounting 2, thereby make noise reduction baffle 3 more stable with being connected of cylinder head 1, further promotion noise reduction baffle connection structure's stability.
When the engine is running, the noise generated by the chain wheel 7 driving the chain is large, so the noise reduction baffle plate 3 is arranged at the outer side of the cylinder head 1 close to the chain cavity 14.
As shown in fig. 3 and 4, the sealing element 4 is a sealing washer, an annular sealing groove 41 is formed in the outer side wall of the sealing element 4, the noise reduction partition plate 3 is provided with a sealing part 31 embedded into the sealing groove 41, the sealing washer is sleeved on the fixing element 2, a plurality of sealing bulges 42 are arranged on the end faces of the two ends of the sealing washer, the sealing bulges 42 at one end of the sealing washer are abutted against the outer wall of the cylinder head 1, the sealing bulges 42 at the other end of the sealing washer are abutted against the fixed blocking edge 21, and the inner side wall of the sealing washer is attached to the outer side wall of the.
As shown in fig. 4, the mounting hole includes a mounting counterbore 12 and a through hole 15 communicated with the mounting counterbore 12, the sealing member 4 abuts against a step surface 12a of the mounting counterbore 12, the fixing member 2 is arranged on the mounting counterbore 12 and the through hole 15 in a penetrating manner, and a relief gap 5 is formed between the outer wall of the fixing member 2 and the hole wall of the through hole 15.
As shown in fig. 3 and 4, the fixing element 2 is a fixing bolt, one end of the fixing bolt has a sealing shoulder 22 abutting against the side wall of the fixing portion 11 and a connecting portion 23 screwed with the fixing portion 11, a recess 24 is provided between the connecting portion 23 and the sealing shoulder 22, the fixing portion 11 has a strip-shaped connecting seat 11a, a threaded hole 11a1 for the connecting portion 23 to be embedded into is provided on the connecting seat 11a, a notch of the recess 24 is shielded by a hole wall of the threaded hole 11a1, an end surface of the sealing shoulder 22 is attached to an end surface of the connecting seat 11a, the sealing shoulder 22 has a guiding surface 22a, the guiding surface 22a is a conical surface, and the guiding surface 22a is gradually inclined outward from one end far from the connecting portion 23 to one end near the connecting portion 23.
As shown in fig. 5 and 6, the inner wall of the noise reduction partition plate 3 is provided with at least one fixing buckle 32, the outer wall of the cylinder head 1 is provided with clamping grooves 13 which are arranged corresponding to the fixing buckles 32 one by one, the fixing buckles 32 can be embedded into the corresponding clamping grooves 13, the fixing buckles 32 are arranged at the upper end of the noise reduction partition plate 3, and the fixing member 2 is arranged at the lower end of the noise reduction partition plate 3.
Example two
The present embodiment is substantially the same as the first embodiment, except that: the fixing piece 2 is a rivet, one end of the rivet can sequentially penetrate through the noise reduction partition plate 3 and the chain cavity 14 and is fixedly connected with the fixing part 11, and the other end of the rivet presses the noise reduction partition plate 3 and the sealing piece 4 on the outer wall of the cylinder head 1.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011519071.4A CN112555025B (en) | 2020-12-21 | 2020-12-21 | A noise reduction baffle connection structure for an engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011519071.4A CN112555025B (en) | 2020-12-21 | 2020-12-21 | A noise reduction baffle connection structure for an engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112555025A true CN112555025A (en) | 2021-03-26 |
| CN112555025B CN112555025B (en) | 2024-12-31 |
Family
ID=75031136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011519071.4A Active CN112555025B (en) | 2020-12-21 | 2020-12-21 | A noise reduction baffle connection structure for an engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112555025B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0814059A (en) * | 1994-06-29 | 1996-01-16 | Suzuki Motor Corp | Soundproof structure of 4-cycle engine |
| JPH10246124A (en) * | 1997-03-05 | 1998-09-14 | Kawasaki Heavy Ind Ltd | 4 cycle engine |
| JP2000145473A (en) * | 1996-10-02 | 2000-05-26 | Kokusan Buhin Kogyo Kk | Sound insulation cover |
| CN204552946U (en) * | 2015-02-10 | 2015-08-12 | 无锡沃尔福汽车技术有限公司 | A kind of denoising device of motor head |
| CN205503292U (en) * | 2016-03-09 | 2016-08-24 | 浙江春风动力股份有限公司 | Engine, cylinder head and cylinder head damping structure thereof |
| JP2017180124A (en) * | 2016-03-28 | 2017-10-05 | 株式会社Ｓｕｂａｒｕ | cylinder head |
| US20190017435A1 (en) * | 2017-07-14 | 2019-01-17 | Honda Motor Co., Ltd. | Sound insulation structure for vehicle |
| CN213838777U (en) * | 2020-12-21 | 2021-07-30 | 浙江钱江摩托股份有限公司 | Noise reduction baffle connection structure of engine |
-
2020
- 2020-12-21 CN CN202011519071.4A patent/CN112555025B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0814059A (en) * | 1994-06-29 | 1996-01-16 | Suzuki Motor Corp | Soundproof structure of 4-cycle engine |
| JP2000145473A (en) * | 1996-10-02 | 2000-05-26 | Kokusan Buhin Kogyo Kk | Sound insulation cover |
| JPH10246124A (en) * | 1997-03-05 | 1998-09-14 | Kawasaki Heavy Ind Ltd | 4 cycle engine |
| CN204552946U (en) * | 2015-02-10 | 2015-08-12 | 无锡沃尔福汽车技术有限公司 | A kind of denoising device of motor head |
| CN205503292U (en) * | 2016-03-09 | 2016-08-24 | 浙江春风动力股份有限公司 | Engine, cylinder head and cylinder head damping structure thereof |
| JP2017180124A (en) * | 2016-03-28 | 2017-10-05 | 株式会社Ｓｕｂａｒｕ | cylinder head |
| US20190017435A1 (en) * | 2017-07-14 | 2019-01-17 | Honda Motor Co., Ltd. | Sound insulation structure for vehicle |
| CN109252958A (en) * | 2017-07-14 | 2019-01-22 | 本田技研工业株式会社 | Sound-insulating structure for vehicle |
| CN213838777U (en) * | 2020-12-21 | 2021-07-30 | 浙江钱江摩托股份有限公司 | Noise reduction baffle connection structure of engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112555025B (en) | 2024-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6896098B2 (en) | Lid for muffling noises produced by an internal combustion engine, and method for producing such lid | |
| JP5145423B2 (en) | Fuel injection device | |
| CN213838777U (en) | Noise reduction baffle connection structure of engine | |
| JP2009209985A (en) | Sealing device in bolt for fastening synthetic resin-made enclosure | |
| CN112555025A (en) | Noise reduction baffle connection structure of engine | |
| JP5002300B2 (en) | Soundproof cover and its mounting structure | |
| CN107842601B (en) | Gear chamber cover connecting device | |
| JP2008248809A5 (en) | ||
| CN213980990U (en) | A low noise diesel engine | |
| CN223358351U (en) | Oil adding pipe and cylinder cover combined device and excavator | |
| JP2004198801A (en) | Soundproof cover | |
| CN209258277U (en) | A kind of positioning component and automobile spoiler | |
| JPS6029659Y2 (en) | Cover mounting device | |
| JP2018084172A (en) | Internal combustion engine | |
| CN221033740U (en) | Pneumatic device with air source supporting vibration reduction structure | |
| CN219101589U (en) | Compressor with vibration damping and noise reduction structure | |
| CN217935282U (en) | Brushless motor with noise reduction structure | |
| CN113202360A (en) | Tolerance absorption fixing device | |
| CN217328385U (en) | Vibration-damping anti-loosening diesel engine gear chamber cover | |
| CN221482287U (en) | Promote oil tank sealing performance's oil mass sensor mounting structure | |
| CN223894715U (en) | Sealing fastener for wind power cabin | |
| CN222731968U (en) | High leakproofness methanol engine main bearing cap of easily assembling | |
| CN112983965A (en) | Slide bolt fastening gasket and mounting assembly | |
| CN219755586U (en) | High-pressure gas station through-wall pipeline noise reduction structure | |
| JPH0133814Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |