CN208184826U - A kind of rear muffler - Google Patents

Abstract

The utility model provides a kind of rear muffler, for reducing the exhaust noise of vehicle, comprising: shell, it is column structure, noise reduction is carried out for circulated gases and to gas, shell includes a side and two end faces, and the length direction of side and the crossbeam of vehicle are parallel, and two end faces are class ellipse；Wherein, shell inclination is set to the bottom of the boot-lid panel of vehicle, so that the end of the close rear of vehicle of end face is higher than the end of the close vehicle front of end face at a distance from horizontal plane at a distance from horizontal plane.The rear muffler of the utility model solve the problems, such as to disappear after the prior art structural modeling on the basis of expand its volume and cause the exsertion part of rear muffler more.

Description

A kind of rear muffler

Technical field

The utility model relates to vehicle component fields, more particularly to a kind of rear muffler.

Background technique

Currently, the structure that disappears after existing vehicle is generally ellipse, since the later period needs the exhaust by experiment to vehicle Noiseproof feature is verified, and therefore, it is necessary to increase the volume of rear muffler.And if the basis for the structural modeling that disappears after existing Upper its volume of expansion, then the exsertion part that will lead to rear muffler is more, to influence the beauty at vehicle rear；If disappeared to after The exsertion part of structure paints, then will lead to the increased costs for the structure that disappears after single-piece；If by the way that rear bumper arm is downward Extending then will lead to the rear guarantor of vehicle with the exsertion part for the structure that disappears after blocking and seems heavy and influence the moulded wind of vehicle Lattice.

Utility model content

One purpose of the utility model is to provide for a kind of rear muffler, and to solve to disappear after the prior art, structure is made Expand the problem that its volume causes the exsertion part of rear muffler more on the basis of type.

The utility model one is further objective is that reduce the cost that the exsertion part of structure that disappears to after paints.

Another purpose of the utility model is the moulded aesthetics of vehicle to be improved.

Particularly, the utility model provides a kind of rear muffler, for reducing the exhaust noise of vehicle comprising:

Shell is column structure, carries out noise reduction for circulated gases and to the gas, the shell includes a side Face and two end faces, the length direction of the side is parallel with the crossbeam of the vehicle, and two end faces are class ellipse Shape；

Wherein, the shell inclination is set to the bottom of the boot-lid panel of the vehicle, so that the end face is close The end of the rear of vehicle is higher than end and the horizontal plane of the close vehicle front of the end face at a distance from horizontal plane Distance.

Further, two end faces of the shell are the oval with big end and small end, the end face Small end is close to the rear bumper, the multi-link lever suspension fork of the big end of the end face close to the vehicle, and the end face Small end is tilted to the direction of the boot-lid panel, so that the small end and the vertical range of horizontal plane are big higher than described The vertical range of end and the horizontal plane.

Further, the oval has long axis, the length direction composition of the ovate long axis and the vehicle One predetermined angle, and the range difference of first distance and second distance is made to be a pre-determined distance；

Wherein, the first distance is the ovate minimum point at a distance from the horizontal plane；The second distance For the rear bumper minimum point at a distance from the horizontal plane；

The predetermined angle is 10-20 degree；

The pre-determined distance is 24-25mm.

Further, the side of the shell is equipped with air inlet port, is connected with the engine exhaust port of the vehicle, uses In the exhaust gas of the engine exhaust system discharge for the vehicle that circulates；

Two end faces of the shell are equipped with exhaust port, flow through in the shell for being discharged by processing of eliminating the noise Exhaust gas；

Wherein, the exhaust port is configured to match with the bottom end of the rear bumper, and the exhaust port is most Low spot is higher than the first distance at a distance from the horizontal plane.

Further, spare tyre mounting base, and the spare tyre mounting base and the shell are equipped with positioned at the top of the shell The long axis of end face is parallel, so that the spare tyre being placed at the spare tyre mounting base can be equal with the long axis of the end face Row.

Further, the bottom of the boot-lid panel is equipped with mixed dynamic battery, and be located at the spare tyre front end of the vehicle Top；

Wherein, the front end of the spare tyre is the end of the spare tyre close to the shell air inlet port.

Further, two end faces of the shell are equipped with fixing piece, to pass through the fixing piece and the vehicle Stringer is fixedly connected.

Further, the fixing piece is rubber lifting lug, and the stringer of the vehicle is equipped with welding hook, the welding hook It is fixedly connected with the rubber lifting lug, so that the stringer of the shell and the vehicle is fixed together.

Further, the distance between the highest point of the shell and the spare tyre mounting base are not less than 35mm；

The shortest distance of the side of the shell and the multi-link lever suspension fork is 25-26mm；

The vertical range of the highest point of the side of the shell and the rear bumper is not less than 50mm.

Further, the volume of the shell is 30-32L.

The utility model has the following beneficial effects:

Firstly, since at bottom of the rear muffler by the boot-lid panel that shell is inclined to vehicle, and So that the end of the close rear of vehicle of the end face of the rule-like ellipse of shell is close higher than end face at a distance from horizontal plane The end of vehicle front is at a distance from horizontal plane.So set, making the rule-like of shell oval by the slant setting of shell The end of the close rear of vehicle of the end face of shape is higher than end and the level of the close vehicle front of end face at a distance from horizontal plane The distance in face, so that the exposed parts of shell do not exceed the part of preset length, i.e., when the volume of rear muffler becomes larger When, expand it on the basis of by the way that the slant setting of rear muffler shell to be able to solve after the prior art and disappear structural modeling Volume and the problem for causing the exsertion part of rear muffler more.

Secondly as the shell of rear muffler exposed parts control in a reasonable range (such as it is ovate most The range difference that low spot is at a distance from horizontal plane and the minimum point of rear bumper is at a distance from horizontal plane is no more than 24-25mm), thus Without because painting more than the exposed parts of rear muffler to exposed parts, with the cost of reduction spray painting；More it is able to solve In the prior art due to accordingly extending downwardly rear bumper more than the exposed parts of rear muffler to block the outer of rear muffler Reveal part, the tail portion for finally resulting in vehicle becomes heavy problem.

Furthermore since the exhaust port of shell and the bottom end of rear bumper match, and the minimum point and water of exhaust port The distance of plane is higher than first distance (ovate minimum point is at a distance from horizontal plane), that is, illustrates in terms of the tail portion of vehicle backward Silencer, not can be appreciated that the exhaust port of rear muffler, to will not influence the beauty of vehicle modeling.

Further, since the temperature at rear muffler is relatively high, when by the way that the shell of rear muffler is inclined at At the bottom of boot-lid panel, and make end and the horizontal plane of the close rear of vehicle of the end face of the rule-like ellipse of shell Distance be higher than end face close vehicle front end at a distance from horizontal plane after, rear muffler can be made separate and vehicle After protect, to limit the temperature field of Bao Chu after vehicle, that is, the rear guarantor of vehicle may make to obtain certain protection.

According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more Add the above-mentioned and other purposes, advantages and features of clear the utility model.

Detailed description of the invention

Some specific realities of the utility model are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter Apply example.Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that The drawings are not necessarily drawn to scale.In attached drawing:

Fig. 1 is the schematic assembly structure figure of rear muffler and vehicle in the prior art；

Fig. 2 is the schematic assembly structure figure according to a kind of rear muffler and vehicle of the utility model one embodiment；

Fig. 3 is the schematic assembling structure according to a kind of rear muffler and vehicle of the utility model another embodiment Figure；

Fig. 4 is the schematic assembling structure according to a kind of rear muffler and vehicle of the utility model third embodiment Figure.

Specific embodiment

Fig. 1 is the schematic assembly structure figure of rear muffler and vehicle in the prior art, and rear muffler therein is set as Main structure, and the shape of its end face 10 is generally set to the ellipse of rule, volume is generally 25L or so, vertical with vehicle Beam is fixedly connected.And in order to further decrease the exhaust noise of vehicle, need correspondingly to increase the volume of rear muffler, according to figure The shape of 1 rear muffler and its assembling structure can be in the basic into one of original noise reduction when its volume is increased to 31L Step reduce 3db, but as shown in Figure 1, increase rear muffler volume after, bottom distance A between vehicle rear bumper bottom end It is then increased to about 39.53mm, and in order to keep the beauty of vehicle modeling, allow rear muffler bottom and vehicle rear bumper bottom end Between distance A at 25mm or so (exposed parts of rear muffler), therefore, distance A shown in FIG. 1 be 39.53mm, considerably beyond Allowed band value.

In order to solve the above-mentioned technical problem, the utility model proposes a kind of rear mufflers, as shown in Fig. 2, for reducing The exhaust noise of vehicle, rear muffler can include: shell 1 is column structure, is dropped for circulated gases and to gas It makes an uproar, shell 1 includes a side 12 and two end faces 11, and the length direction of side 12 and the crossbeam of vehicle are parallel, two ends Face 11 can be class ellipse；Wherein, the inclination of shell 1 is set to the bottom (as shown in Figure 4) of the boot-lid panel 6 of vehicle, so that End face 11 close rear of vehicle end at a distance from horizontal plane be higher than end face close vehicle front end and water The distance of plane.At bottom of the rear muffler by the boot-lid panel that shell 1 is inclined to vehicle, and make shell Before the end of the close rear of vehicle of the end face of the rule-like ellipse of body is higher than the close vehicle of end face at a distance from horizontal plane The end of side is at a distance from horizontal plane.So set, making the end of the rule-like ellipse of shell by the slant setting of shell The end of the close rear of vehicle in face at a distance from horizontal plane higher than end face close vehicle front end and horizontal plane away from From so that the exposed parts of shell do not exceed the part of preset length, i.e., when the volume of rear muffler becomes larger, passing through Expand its volume on the basis of can solve by the slant setting of rear muffler shell and disappear structural modeling after the prior art and The problem for causing the exsertion part of rear muffler more.

Further, since the temperature at rear muffler is generally relatively high, and the rear guarantor of vehicle compares at a distance from rear muffler It is short, therefore, the influence that will receive rear muffler high temperature is protected after vehicle, certain damage is caused to rear guarantor.And in the present embodiment, lead to It crosses and the shell of rear muffler is inclined at the bottom of boot-lid panel, and make the end face of the rule-like ellipse of shell The end of close rear of vehicle is higher than the end of the close vehicle front of end face at a distance from horizontal plane at a distance from horizontal plane, such as This, the rear guarantor that rear muffler can be made separate with vehicle, so that the temperature field of Bao Chu after vehicle is limited, so that after vehicle Guarantor has obtained certain protection.

As shown in Figure 3 and Figure 4, two end faces 11 of shell can be the oval with big end and small end, end face 11 small end (it is outstanding to show multi link close to the multi-link lever suspension fork 4 of vehicle close to rear bumper 2, the big end of end face in Fig. 3 The location of frame), and the small end of end face is tilted to the direction of boot-lid panel 6, so that small end and horizontal plane hang down Straight distance is higher than the vertical range of big end and horizontal plane.The oval has long axis, the length of ovate long axis and vehicle Direction constitutes a predetermined angle θ, and makes the range difference B of first distance and second distance that can be a pre-determined distance；Wherein, first Distance can be ovate minimum point at a distance from horizontal plane；Second distance can for rear bumper minimum point and horizontal plane away from From.

Wherein, for the concept of oval from the ovum (egg) of poultry and oviparous animal, entire ovum (egg) is known as ossphere body, vertical to cut The shape in face is traditionally known as oval.

Further, it is illustrated in conjunction with Fig. 3 and Fig. 4, presetting tangent line ab, (default tangent line ab can be for apart from vehicle tail one The straight line that the periphery for the end face 11 that eyeball and eyeball at measured length position visually arrive is constituted, and the periphery phase of the straight line and end face Cut, and parallel with ovate long axis) a predetermined angle θ is constituted with level ground, so that after default tangent line ab and vehicle The distance B (i.e. the range difference of first distance and second distance) of 2 bottom end of bumper is no more than a pre-determined distance.Due to rear muffler At bottom by the boot-lid panel 6 that shell 1 is inclined to vehicle, and make shell ovate end face it is default Tangent line ab and the long axis of end face constitute a predetermined angle, and default tangent line ab is no more than at a distance from the rear bumper bottom end of vehicle One preset length (pre-determined distance).So set, the irregular ellipse of shell can be made by the slant setting of shell The default tangent line ab of end face 11 and horizontal bottom constitute a predetermined angle θ so that the exposed parts of shell do not exceed it is pre- If the part of length, i.e., when the volume of rear muffler becomes larger, by being cut so that presetting by the slant setting of rear muffler shell Line is no more than the scheme of a preset length at a distance from the rear bumper bottom end of vehicle, can solve the knot that disappears after the prior art The problem for expanding its volume on the basis of structure type and causing the exsertion part of rear muffler more.

In the above-described embodiments, default tangent line may be eyeball at the position apart from vehicle tail 10m and eyeball can With the straight line that the periphery of the end face for the shell seen is constituted, and the straight line and the periphery of end face are tangent.Predetermined angle θ can be 10-20 degree, optionally, predetermined angle θ can be 15 degree；Pre-determined distance can be 24-25mm, and optionally, pre-determined distance B can be 24.718mm.Wherein, visual angle observed by eyeball can be for the eyeball visual angle of the terrain clearance of the eyeball 1568 of percentile human body.

Since the exposed parts of the shell of rear muffler control in a reasonable range (as preset tangent line and vehicle The distance of rear bumper bottom end be no more than 24-25mm), because without because rear muffler exposed parts more than due to exposed parts It paints, to reduce the cost of spray painting；It more can solve in the prior art due to corresponding more than the exposed parts of rear muffler Rear bumper is extended downwardly to block the exposed parts of rear muffler, the tail portion for finally resulting in vehicle becomes heavy problem.

It in above-mentioned further embodiment, is illustrated in conjunction with Fig. 2 to Fig. 4, pacifies positioned at the top of shell 1 equipped with spare tyre Seat 3 is filled, and spare tyre mounting base 3 is parallel with the long axis of shell end face 11, so that the spare tyre 31 being placed at spare tyre mounting base 3 It can be parallel with the long axis of end face 11.The bottom of boot-lid panel 6 is equipped with mixed dynamic battery 7, and before the spare tyre 31 of vehicle The top at end；Wherein, the front end of spare tyre 31 is the end of the spare tyre close to 1 air inlet port of shell.The side 12 of shell be equipped with into Gas port 14 is connected with the engine exhaust port of vehicle, the exhaust gas that the engine exhaust system for the vehicle that circulates is discharged；Shell Two end faces 11 of body are equipped with exhaust port 13, flow through in shell 1 for being discharged by the exhaust gas for processing of eliminating the noise；Wherein, it arranges Gas port 13 is configured to match with the bottom end of rear bumper 2, and the minimum point of exhaust port 13 is higher than at a distance from horizontal plane First distance, the i.e. minimum point of exhaust port 13 can be located on default tangent line ab.

It is illustrated in conjunction with Fig. 3 and Fig. 4, due to being leaned in front of the big end of the close front of the car of the end face 11 of rear muffler The multi-link lever suspension fork 4 of nearly vehicle, and close to the mixed dynamic 7 (BSG of battery of vehicle above the big end of the close front of the car of end face 11 Battery), the spare tyre mounting base 3 of vehicle is located at the top of rear muffler shell, when taking spare tyre, first pulls open in spare tyre mounting base 3 The boot-lid panel 6 of side, then upper lift spare tyre 31, different location state when spare tyre 31 ' is upper lift spare tyre 31.At this point, existing skill In art can due to the volume of rear muffler increases and the front end of spare tyre and the mixed battery that moves closely are arranged, when upper lift spare tyre, must It so will drive and lifted on mixed dynamic battery, and since mixed dynamic battery is set to the lower section of boot-lid panel, mix same when being lifted on dynamic battery It will drive and lifted on boot-lid panel, to affect the volume of luggage case.And in the assembly knot of the rear muffler of the utility model In structure, as shown in figure 4, the setting parallel with the long axis of shell end face 11 of spare tyre mounting base 3, can be placed on spare tyre installation Spare tyre 31 at seat 3 is parallel with the long axis of end face 11, that is to say, that is placed on spare tyre 31 at spare tyre mounting base 3 and also inclines at this time It is tiltedly set to the bottom of boot-lid panel 6, and spare tyre 31 is tilted close to the end of rear bumper 2 to 6 direction of boot-lid panel, is being taken When spare tyre 31, it is only necessary to boot-lid panel 6 is above lifted, and along the mobile spare tyre of winding thread of two-maing ladle on spare tyre 31 ', it finally can be constant Spare tyre 31 is taken away in the case where dynamic mixed dynamic battery 7, so as to not influence the volume of luggage case.

Further, since the exhaust port 13 of shell and the bottom end of rear bumper 2 match, and the minimum point of exhaust port 13 On default tangent line ab, i.e., to rear muffler in terms of direction of the explanation from the tail portion of vehicle along default tangent line, after not can be appreciated that The exhaust port of silencer, to will not influence the beauty of vehicle modeling.

In above-mentioned some embodiments, two end faces 11 of shell can be equipped with fixing piece 5, to pass through fixing piece 5 and vehicle Stringer 8 be fixedly connected.Fixing piece 5 can be rubber lifting lug, and welding hook, welding hook and rubber can be equipped at the stringer of vehicle Glue lifting lug can be fixedly connected, so that the stringer of shell and vehicle is fixed together.Since rubber lifting lug uses rubber material Matter is made, and therefore, when the engine work of vehicle, can further absorb the vibration of engine exhaust system.

In other above-mentioned embodiments, it is contemplated that after disappear the temperature field of exhaust and the heat shield of vehicle design it is empty Between, the distance between the highest point of shell 1 and spare tyre mounting base D are typically no less than 35mm；The side 12 of shell and multi link are outstanding The shortest distance C of frame 4 can be 25-26mm；The side of shell and the shortest distance E of rear bumper 2 are not less than 50mm.

In some embodiments of any of the above-described, compared with the volume of rear muffler in the prior art, the utility model The volume of rear muffler can increase to 30-32L, so as to further decrease the noise about 3db of engine exhaust system.

So far, although those skilled in the art will appreciate that the more of the utility model have been shown and described in detail herein A exemplary embodiment still, still can be according to the utility model public affairs in the case where not departing from the spirit and scope of the utility model The content opened directly determines or derives many other variations or modifications for meeting the utility model principle.Therefore, this is practical new The range of type is understood that and regards as to cover all such other variations or modifications.

Claims (10)

1. a kind of rear muffler, for reducing the exhaust noise of vehicle characterized by comprising

Shell is column structure, carries out noise reduction for circulated gases and to the gas, the shell include side and Two end faces, the length direction of the side is parallel with the crossbeam of the vehicle, and two end faces are class ellipse；

Wherein, the shell inclination is set to the bottom of the boot-lid panel of the vehicle, so that the end face is close described The end of rear of vehicle at a distance from horizontal plane higher than the end face close to the vehicle front end and horizontal plane away from From.

2. rear muffler according to claim 1, which is characterized in that

Two end faces of the shell are the oval with big end and small end, and the small end of the end face is close to described The rear bumper of vehicle, the big end of the end face close to the vehicle multi-link lever suspension fork, and the small end of the end face to The direction of the boot-lid panel tilts, so that the small end and the vertical range of horizontal plane are higher than the big end and institute State the vertical range of horizontal plane.

3. rear muffler according to claim 2, which is characterized in that the oval has long axis, described ovate The length direction of long axis and the vehicle constitutes a predetermined angle, and the range difference of first distance and second distance is made to be one pre- If distance；

Wherein, the first distance is the ovate minimum point at a distance from the horizontal plane；The second distance is institute The minimum point of rear bumper is stated at a distance from the horizontal plane；

The predetermined angle is 10-20 degree；

The pre-determined distance is 24-25mm.

4. rear muffler according to claim 3, which is characterized in that

The side of the shell is equipped with air inlet port, is connected with the engine exhaust port of the vehicle, for the vehicle that circulates Engine exhaust system discharge exhaust gas；

Two end faces of the shell are equipped with exhaust port, flow through in the shell for being discharged by the useless of processing of eliminating the noise Gas；

Wherein, the exhaust port is configured to match with the bottom end of the rear bumper, and the minimum point of the exhaust port With at a distance from the horizontal plane be higher than the first distance.

5. rear muffler according to claim 4, which is characterized in that

It is equipped with spare tyre mounting base positioned at the top of the shell, and the spare tyre mounting base is equal with the long axis of the shell end face Row, so that the spare tyre being placed at the spare tyre mounting base can be parallel with the long axis of the end face.

6. rear muffler according to claim 5, which is characterized in that the bottom of the boot-lid panel is equipped with mixed dynamic electricity Pond, and it is located at the top of the spare tyre front end of the vehicle；

Wherein, the front end of the spare tyre is the end of the spare tyre close to the shell air inlet port.

7. rear muffler according to claim 6, which is characterized in that two end faces of the shell are equipped with fixing piece, To be fixedly connected by the fixing piece with the stringer of the vehicle.

8. rear muffler according to claim 7, which is characterized in that the fixing piece is rubber lifting lug, the vehicle Stringer is equipped with welding hook, and the welding hook is fixedly connected with the rubber lifting lug, thus by the shell and the vehicle Stringer be fixed together.

9. rear muffler according to claim 8, which is characterized in that

The distance between the highest point of the shell and the spare tyre mounting base are not less than 35mm；

The shortest distance of the side of the shell and the multi-link lever suspension fork is 25-26mm；

The vertical range of the highest point of the side of the shell and the rear bumper is not less than 50mm.

10. -9 described in any item rear mufflers according to claim 1, which is characterized in that

The volume of the shell is 30-32L.