CN210264879U

CN210264879U - Exhaust tail pipe of muffler for vehicle

Info

Publication number: CN210264879U
Application number: CN201921126588.XU
Authority: CN
Inventors: 赵岩; 刘波; 陈子默; 胡文杰; 张耀
Original assignee: Dongfeng Motor Corp
Current assignee: Dongfeng Motor Corp
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-04-07
Anticipated expiration: 2029-07-18

Abstract

The utility model relates to the technical field of vehicle exhaust systems, and discloses a muffler tail pipe for a vehicle, wherein the rear end of the tail pipe of the muffler is provided with a rainproof device for stopping rainwater from entering the tail pipe, and the rainproof device is arranged at the rear periphery of a vehicle body; the rainproof device comprises a turnover plate and a turnover plate, wherein the turnover plate and the turnover plate are arranged inside the enclosing pipe behind the automobile body and are impacted by exhaust tail pipe exhaust airflow to wind a rotating turnover shaft, the size of the turnover plate is matched with the inner diameter of the enclosing pipe behind the automobile body, the turnover shaft is arranged along the axis higher than the diameter of the turnover plate in the horizontal direction and is arranged on the enclosing pipe behind the automobile body, and a preset distance is arranged between the turnover shaft and the opening at the rear end of the enclosing pipe behind the automobile body in the axis direction of the enclosing pipe behind the automobile body. The utility model discloses a silencer tail pipe for vehicle both can effectively prevent the rainwater to get into tail pipe, and the returning face plate can not change exhaust airflow direction on being in horizontal position under the open mode moreover.

Description

Exhaust tail pipe of muffler for vehicle

Technical Field

The utility model relates to a vehicle exhaust system technical field, concretely relates to silencer tail pipe for vehicle.

Background

On special vehicles, a rear engine layout is often adopted. Because special vehicles have wading requirements, the exhaust system muffler is fixed at a higher position in an engine compartment, a water leakage hole structure on a muffler body is cancelled, and the exhaust tail pipe discharges exhaust gas into the atmosphere through an opening on the rear periphery of the vehicle body.

Currently, most muffler tail pipes are free of rain guards on special vehicles with such exhaust system arrangements. When the vehicle runs in rainy days, the tail pipe continuously discharges high-speed waste gas, so that rainwater cannot enter the tail pipe; when the vehicle is not started in a stationary state in rainy days, no waste gas is discharged from the exhaust tail pipe, rainwater can enter the interior of the silencer through the exhaust tail pipe, the interior of the silencer is corroded due to long-time water accumulation, and in a more serious case, water carries with impurity particles and flows back into the engine through the exhaust pipeline, so that serious risks such as corrosion and abrasion of the cylinder and the piston are caused.

In addition, some vehicles add an upturned outer fender structure at the rear vehicle body periphery 6, as shown in fig. 6. The turnover shaft 8 is arranged above the vehicle body rear surrounding pipe 7, so that the outer baffle 9 can open or close the opening of the vehicle body rear surrounding pipe 7. When the vehicle is not started, the outer baffle 9 closes the tail pipe by gravity; when the vehicle starts, the outer baffle 9 rotates upwards around the turnover shaft 8 under the action of the impact force of the waste gas and is opened downwards, so that the waste gas can be smoothly discharged into the atmosphere. However, the exhaust gas of such a structure collides against the inner side surface of the outer barrier 9 and is reflected to the outer side of the surrounding vehicle body (the exhaust gas flows as shown by the arrow in fig. 6), and after a long time, the outer surface of the surrounding vehicle body is blackened by the exhaust gas, thereby affecting the aesthetic appearance of the vehicle body.

Disclosure of Invention

An object of the utility model is to provide a silencer tail pipe for vehicle convenient to installation can effectively prevent the rainwater to get into tail pipe, can avoid again to disturb and cause harmful effects to tail pipe's volleyball air current.

In order to achieve the purpose, the utility model relates to a muffler tail pipe for a vehicle, the rear end of the tail pipe of the muffler is provided with a rain-proof device which can prevent rainwater from entering the tail pipe, and the rain-proof device is arranged at the rear periphery of the vehicle body; rain insensitive device reaches including setting up the inside returning face plate of taking over behind the automobile body the returning face plate receives tail pipe exhaust air current strikes around its pivoted trip shaft, the size of the returning face plate with the internal diameter phase-match of taking over is taken over to the automobile body back, the trip shaft is along being higher than the axis setting of diameter is installed behind the automobile body on the taking over is taken over to the returning face plate horizontal direction, the trip shaft with between the rear end opening of taking over is taken over behind the automobile body the axis direction of taking over has the distance of predetermineeing behind the automobile body.

As a preferred scheme, a turnover plate shaft hole for the turnover shaft to penetrate through is arranged in the horizontal direction at the position above the middle part of the turnover plate, and the size of the turnover plate shaft hole is matched with the outer diameter of the turnover shaft.

Preferably, the turning plate is in a shape that the left side and the right side of a circle are cut off by a straight line in the vertical direction.

As a preferred scheme, the turnover plate is formed by welding two metal baffle plates with welding surfaces as symmetrical surfaces, and a semicircular groove is punched and formed in the upper middle position of each metal baffle plate.

As a preferred scheme, the left side and the right side of the automobile body rear surrounding connection pipe are respectively provided with a connection pipe shaft hole for the turnover shaft to pass through, and the length of the turnover shaft is larger than the size of the automobile body rear surrounding connection pipe at the installation position of the turnover shaft.

Preferably, the turning shaft includes a bolt passing through the pipe connection shaft hole and a lock nut screwed to an end of the bolt.

Preferably, the part of the shank of the bolt, which is screwed with the locking nut at the tail end, is provided with an external thread, and the rest part of the shank of the bolt is a polished rod.

Preferably, the turning shaft comprises a pin shaft penetrating through the shaft hole of the connecting pipe and a cotter pin fixed at the tail end of the pin shaft.

The utility model has the advantages that: the utility model discloses a silencer tail pipe for vehicle adopts built-in the interior returning face plate of enclosing behind the automobile body and connects the pipe to rotate around the axis that is higher than the returning face plate horizontal direction upper diameter and realize opening and closing of rain insensitive device, both can effectively prevent the rainwater to get into tail pipe, and the returning face plate is in horizontal position under the open mode in addition, can not change the exhaust air flow direction, consequently the phenomenon of the surface impression of automobile body around the influence of exhaust's waste gas can not appear, can keep the clean and tidy of automobile body around.

Drawings

Fig. 1 is an axial sectional view of a muffler tail pipe for a vehicle according to a preferred embodiment of the present invention in a state where a rain guard is closed.

Fig. 2 is a right side view of the tail pipe of the muffler for a special vehicle in fig. 1 in a state where the rain guard is closed.

Fig. 3 is an enlarged view of the flipping panel of fig. 2.

Fig. 4 is an axial sectional view of the tail pipe of the vehicular muffler in fig. 1 in a state where the rain guard is opened.

Fig. 5 is a right side view of the muffler tail pipe for a vehicle in fig. 1 in a state where the defense device is opened.

Fig. 6 is a sectional view of a prior art rain protection device in a partially opened state.

The components in the figures are numbered as follows: the automobile tail pipe comprises a turnover plate 1 (wherein, a turnover plate shaft hole 1.1), a bolt 2, a lock nut 3, a silencer 4, a tail pipe 5, an automobile body rear wall 6 and an automobile body rear wall connecting pipe 7 (wherein, a connecting pipe shaft hole 7.1); a turnover shaft 8 and an outer baffle 9.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

Referring to fig. 1 to 4, in the muffler tail pipe for a vehicle according to the preferred embodiment of the present invention, a rain-proof device is used to prevent rainwater from entering the tail pipe 5 of the muffler 4. The rainproof device is arranged behind an exhaust tail pipe 5 at the rear end of the silencer 4, is arranged on the vehicle body rear wall 6 and is arranged in the vehicle body rear wall connecting pipe 7. The rainproof device for the exhaust tail pipe of the muffler for the vehicle comprises a turnover plate 1, a bolt 2 and a locking nut 3, wherein the size of the turnover plate 1 is matched with the inner diameter of a rear enclosing pipe 7 of the vehicle body (namely the outer diameter of the turnover plate 1 is slightly smaller than the inner diameter of the rear enclosing pipe 7 of the vehicle body), and the bolt 2 and the locking nut 3 form a turnover shaft which fixes the turnover plate 1 on the rear enclosing pipe 7 of the vehicle body and forms the turnover plate 1.

The middle part of returning face plate 1 is equipped with the returning face plate shaft hole 1.1 of horizontal direction, and the external diameter phase-match of returning face plate shaft hole 1.1 internal diameter and trip shaft (promptly the internal diameter of returning face plate shaft hole 1.1 and the screw rod part external diameter phase-match of bolt 2) makes the trip shaft pass in can following returning face plate shaft hole 1.1 to form returning face plate 1 around horizontal direction pivoted trip shaft. For make things convenient for returning to the closed condition after the returning of returning to board 1 upset is opened, board shaft hole 1.1's axis sets up and is located the first half of board 1 (being higher than the diameter on the horizontal direction of board 1) along the horizontal direction, so when board 1 need return to the closed condition from the open condition, the focus of board 1 is located the part (being picture 1, the second half of board 1 in the figure 2, the left side of board 1 in the figure 3) that the axis around board shaft hole 1.1 was turned up on board 1, therefore can return to the closed condition automatically under the effect of gravity. Because the roll-over shaft of the roll-over plate 1 is not in the diameter position, in order to ensure smooth roll-over and avoid interference with the pipe wall of the rear enclosing pipe 7 of the vehicle body during roll-over, the roll-over plate 1 is in a non-regular circle shape, and the left side and the right side of the roll-over plate are in straight line edge cutting in the vertical direction (as shown in figure 2).

In order to ensure the service life of the turnover plate 1, the turnover plate 1 is preferably made of metal. Considering further the shaping of the roll-over panel 1, as shown in fig. 3, the roll-over panel 1 in the embodiment shown is formed by joining two metal flaps 1.2 with a weld plane as a symmetry plane by spot welding. The middle part of each metal baffle sheet 1.2 is punched into a semicircular groove 1.3 at the upward eccentric part, so that the shaft holes 1.1 of the turnover plate are formed in a butt joint mode. Each metal baffle plate 1.2 is in a circular shape, two sides of each metal baffle plate are in vertical directions, and linear cutting is carried out so as to avoid interference of the turnover plate 1 with the rear enclosing pipe 7 of the vehicle body during movement.

The bolt 2 is the main body part of the turnover shaft of the turnover plate 1, the length of the bolt is larger than the size of the rear surrounding pipe 7 of the vehicle body, so that the rod body part of the bolt 2 can completely penetrate through the rear surrounding pipe 7 of the vehicle body and is provided with an end part for screwing the locking nut 3. The outer diameter of the rod body part of the bolt 2 is smaller than the inner diameter of the shaft hole 1.1 of the turnover plate, so that the turnover plate 1 can freely turn over around the bolt 2. The bolt 2 is a non-standard part, the part of the rod body part (the part penetrating into the shaft hole 1.1 of the turnover plate) is a polished rod except the part of the tail end screwed with the locking nut 3 and is provided with external threads, so that the matching resistance with the shaft hole 1.1 of the turnover plate is reduced, and the turnover is smoother.

The internal thread of the locking nut 3 is matched with the external thread at the end part of the screw rod of the bolt 2, and the bolt 2 (the turnover plate 1 which is sleeved on the screw rod part of the bolt 2 along with the bolt) is locked on the rear enclosing pipe 7 of the vehicle body from the end part.

In order to be matched with the installation of a rainproof device, the two sides of the enclosing pipe 7 behind the vehicle body are respectively provided with a pipe connecting shaft hole 7.1 matched with the diameter of the screw rod of the bolt 2. In the cross section direction, the position of the connecting pipe shaft hole 7.1 corresponds to the position of the roll-over plate shaft hole 1.1, and is also positioned at the upper half part of the vehicle body rear surrounding connecting pipe 7 (i.e. the diameter of the connecting pipe 7 in the horizontal direction is higher than the diameter of the vehicle body rear surrounding connecting pipe 7). In the axial direction, the nozzle shaft opening 7.1 is located at a distance from the rear end opening of the vehicle body rear connector 7, so that the flap 1 is partially or completely arranged inside the vehicle body rear connector 7 in the open state and in the closed state.

During assembly, the turnover plate is placed in the rear enclosing pipe 7 of the automobile body to be in place, the shaft hole 1.1 of the turnover plate is aligned with the shaft holes 7.1 of the connecting pipes on two sides, and after the bolt 2 sequentially penetrates through the shaft hole 7.1 of the connecting pipe on one side, the shaft hole 1.1 of the turnover plate 1 of the turnover plate and the shaft hole 7.1 of the connecting pipe on the other side, the end of the bolt 2 is locked by adopting two locking nuts 3 to install the turnover plate 1 on the rear enclosing pipe 7 of the automobile body. After the installation is finished, the turnover plate 1 can freely rotate around the axis of the middle bolt 2.

As shown in fig. 1 and 2, when the vehicle is stationary and the engine is in a closed state, the tail pipe 5 is not exhausted, and the roll-over plate 1 rotates around the eccentric rotating shaft bolt 2 to a vertical position under the action of gravity, so that the outlet of the tail pipe 5 is closed, and rainwater cannot enter the tail pipe 5.

As shown in fig. 4 and 5, when the vehicle starts the engine and is in a starting state, the exhaust tail pipe 5 continuously discharges the exhaust gas outwards, the turnover plate 1 rotates around the bolt 2 to a horizontal (or nearly horizontal) position under the action of the impact force of the exhaust gas, the outlet of the exhaust tail pipe 5 is opened, the exhaust gas can be smoothly discharged into the atmosphere through the rear surrounding pipe 7 of the vehicle body, and the direction of the exhaust gas flow is not changed, so that the interference of the turnover plate 1 on the exhaust gas flow is reduced or even avoided, and the phenomenon that the influence of the exhaust gas on the appearance of the surrounding vehicle body is avoided.

It should be noted that, in the above embodiment, the turning shaft of the turning plate 1 is implemented by the bolt 2, and the mounting and fixing are implemented by the lock nut 3 in cooperation with the bolt 2. In other preferred embodiments, the tilting axis of the tilting plate 1 can also be implemented by a pin, the mounting and fixing of which is realized by a cotter pin mounted at the end of the pin.

The utility model provides a silencer tail pipe for vehicle simple structure, installation and dismantlement are convenient, can effectually prevent the rainwater to get into tail pipe, compare current tail pipe rain insensitive device advantage and lie in not changing exhaust air flow direction, the phenomenon that the surface of automobile body was looked and felt around the influence of waste gas can not appear, keeps the clean and tidy of automobile body around.

The above-mentioned embodiments of the present invention only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not limited thereto. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A muffler tail pipe for a vehicle, the rear end of a tail pipe (5) of a muffler (4) is provided with a rain-proof device for stopping rainwater from entering the tail pipe (5), and the rain-proof device is arranged on a rear wall (6) of a vehicle body, and is characterized in that: rain insensitive device reaches including setting up returning face plate (1) of taking over (7) inside behind the automobile body returning face plate (1) receives tail pipe (5) exhaust air current strikes around its pivoted trip shaft, the size of returning face plate (1) with the internal diameter phase-match of taking over (7) is taken over behind the automobile body, the trip shaft is along being higher than the axis setting of diameter is in returning face plate (1) horizontal direction encloses and installs behind the automobile body on taking over (7), the trip shaft with enclose behind the automobile body between the rear end opening of taking over (7) have the distance of predetermineeing on the axis direction of taking over (7) behind the automobile body.

2. A muffler tail pipe for a vehicle according to claim 1, characterized in that: the middle part of the turnover plate (1) is provided with a turnover plate shaft hole (1.1) for the turnover shaft to pass through along the horizontal direction, and the size of the turnover plate shaft hole (1.1) is matched with the outer diameter of the turnover shaft.

3. A muffler tail pipe for a vehicle according to claim 2, characterized in that: the turnover plate (1) is in a shape that the left side and the right side of a circle are cut off by straight lines in the vertical direction.

4. A muffler tail pipe for a vehicle according to claim 2, characterized in that: the turnover plate (1) is formed by welding two metal separation blades (1.2) taking a welding surface as a symmetrical surface, and each metal separation blade (1.2) is punched and formed into a semicircular groove (1.3) in the middle upper position.

5. The vehicular muffler tail pipe according to any one of claims 1 to 4, characterized in that: the left side and the right side of the automobile body rear surrounding connection pipe (7) are respectively provided with a connection pipe shaft hole (7.1) for the turnover shaft to pass through, and the length of the turnover shaft is larger than the size of the automobile body rear surrounding connection pipe (7) at the installation position of the turnover shaft.

6. The vehicular muffler tail pipe according to claim 5, characterized in that: the turnover shaft comprises a bolt (2) penetrating through the connecting pipe shaft hole (7.1) and a locking nut (3) screwed on the end part of the bolt (2).

7. The vehicular muffler tail pipe according to claim 6, characterized in that: the rod body of the bolt (2) is provided with an external thread except for the part screwed with the locking nut (3) at the tail end, and the rest part is a polished rod.

8. The vehicular muffler tail pipe according to claim 5, characterized in that: the turnover shaft comprises a pin shaft penetrating through the shaft hole (7.1) of the connecting pipe and a cotter pin fixed at the tail end of the pin shaft.