Motorcycle engine exhaust pipe

Abstract

The utility model discloses a motorcycle engine exhaust pipe, which belongs to the technical field of motorcycle engine accessories and comprises an exhaust pipe tail end, a protective plate is arranged on the outer surface of the exhaust pipe tail end, heat insulation plates are fixedly arranged at two ends of the protective plate, and two connecting rods are fixedly arranged on the inner surfaces of the two heat insulation plates respectively. A plurality of locking cylinders are symmetrically and fixedly arranged on the outer surface of the tail end of the exhaust pipe, one ends of the connecting rods are inserted into the opposite locking cylinders respectively, the outer walls of the locking cylinders are sleeved with rotating rings in a rotating mode, and two fixing blocks used for locking the connecting rods are arranged on the inner sides of the rotating rings. According to the exhaust pipe tail end protection device, direct contact between the protection plate and metal is avoided, heat transfer to the protection plate is reduced, the heat insulation and transfer effects of the protection plate are better, and the safety of the exhaust pipe tail end is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motorcycle engine accessory technology field, concretely is a motorcycle engine exhaust pipe. BACKGROUND

[0002] The main role of motorcycle engine exhaust pipe is exhaust and silencing. The exhaust pipe is responsible for not only discharging the exhaust gas generated after the engine combustion outside the motorcycle, but also reducing noise through the silencing design inside it. In addition, the exhaust pipe also has a back pressure effect, helping to promote combustion, preventing the mixture from being discharged before complete combustion, thereby improving combustion efficiency and power output.

[0003] The tail end part of the existing motorcycle exhaust pipe will be hot when discharging exhaust gas. Some exhaust pipes are provided with a baffle on the outer wall of the tail end to prevent burns caused by human contact. However, the metal-to-metal contact of the existing exhaust pipe baffle leads to heat transfer to the baffle, and the baffle blocks the exhaust pipe, affecting the heat dissipation efficiency of the exhaust pipe. SUMMARY

[0004] The utility model aims at providing a motorcycle engine exhaust pipe to at least partially solve the above technical problems.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: including exhaust pipe tail end, the outer surface of exhaust pipe tail end is provided with the protection board, both ends of protection board are fixedly provided with heat insulation board, the inner surface of two heat insulation boards is respectively fixedly provided with two connecting rods, the outer surface of exhaust pipe tail end is fixedly provided with multiple locking cylinders, one end of multiple connecting rods is respectively inserted in opposite locking cylinders, the outer wall of locking cylinder is provided with rotation ring which rotates, the inner side of rotation ring is provided with two fixed blocks for locking connecting rod, one end of fixed block is inserted in the inside of connecting rod through locking cylinder.

[0006] Preferably, the outer wall of the connecting rod is longitudinally provided with two symmetrically distributed guide grooves, the outer wall of the connecting rod is annularly provided with a fixing groove, the fixing groove is in communication with the two guide grooves, the guide grooves are opposite to the fixed blocks, and one end of the fixed block is inserted in the guide groove and can rotate into the fixing groove.

[0007] Preferably, the outer wall of the locking cylinder is provided with a restriction opening matched with the two fixed blocks, one end of the fixed block is inserted in the restriction opening, the connecting rod is inserted in the locking cylinder, and the restriction opening is opposite to the fixing groove.

[0008] Preferably, the outer surface of the exhaust pipe tail end is provided with multiple screw holes, and multiple locking cylinders are fixed on the outer surface of the exhaust pipe tail end through screws.

[0009] Preferably, the protective plate is made of stainless steel, and a plurality of heat dissipation holes are formed in the outer wall of the protective plate.

[0010] Preferably, the heat insulation plate is made of a plastic plate of polytetrafluoroethylene.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The utility model uses a plurality of locking cylinders arranged on the tail end outer surface of the exhaust pipe to support the protective plate and the heat insulation plate, so that the protective plate is not in contact with the tail end of the exhaust pipe, and the heat insulation plate is arranged between the protective plate and the connecting rod, so that the protective plate made of metal is not in contact with the connecting rod, direct contact between metal and metal is avoided, heat transfer to the protective plate is reduced, the heat insulation and transfer effect of the protective plate is better, and the safety of the tail end of the exhaust pipe is further improved.

[0013] 2. When the utility model is used, the mark line on the rotating ring is aligned with one end of the mark line on the locking cylinder when the rotating ring is rotated, so that the fixed block is rotated to the guide inner, and the connecting rod can be taken out, so that the protective plate can be easily disassembled and cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creative labor.

[0015] Figure 1 It is the overall three-dimensional structure schematic diagram of the embodiment;

[0016] Figure 2 It is the separated structure schematic diagram of the protective plate of the embodiment;

[0017] Figure 3 It is the A enlarged structure schematic diagram in the embodiment; Figure 1

[0018] Figure 4 It is the locking cylinder and the connecting rod sectional structure schematic diagram of the embodiment;

[0019] Figure 5 It is the locking cylinder and the connecting rod explosion structure schematic diagram of the embodiment.

[0020] In the drawings, the component list represented by each sign is as follows:

[0021] ​1, exhaust pipe tail end; 2, heat insulation plate; 3, guard plate; 4, locking cylinder; 41, screw; 42, constraint port; 5, rotating ring; 51, fixed block; 6, connecting rod; 61, guide groove; 62, fixed groove; 7, mark line. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a motorcycle engine exhaust pipe, including exhaust pipe tail end 1, exhaust pipe tail end 1 outer surface is provided with guard plate 3, guard plate 3 both ends are fixedly provided with heat insulation plate 2, two heat insulation plates 2 inner surface are respectively fixedly provided with two connecting rods 6, exhaust pipe tail end 1 outer surface is symmetrically fixedly provided with multiple locking cylinders 4, multiple connecting rods 6 one end is respectively inserted in opposite locking cylinder 4, locking cylinder 4 outer wall is set rotatingly with rotating ring 5, rotating ring 5 inside is provided with two fixed blocks 51 for locking connecting rod 6, fixed block 51 one end is inserted in the inside of connecting rod 6 by locking cylinder 4;

[0024] By the multiple locking cylinders 4 and connecting rod 6 that are provided on the outer surface of exhaust pipe tail end 1 support guard plate 3 and heat insulation plate 2, so that guard plate 3 and exhaust pipe tail end 1 are not in contact, the guard plate 3 provided is used to protect the side of exhaust pipe tail end 1 that can be contacted by people, and the heat insulation plate 2 is arranged between the guard plate 3 and the connecting rod 6, so that the guard plate 3 made of metal does not contact the connecting rod 6, direct contact between metal and metal is avoided, heat transfer to the guard plate 3 is reduced, the heat insulation and transfer effect of the guard plate 3 is better, and the safety of the exhaust pipe tail end 1 is further improved.

[0025] Further preferably, two symmetrically distributed guide grooves 61 are longitudinally formed in the outer wall of the connecting rod 6, a fixed groove 62 is annularly formed in the outer wall of the connecting rod 6, the fixed groove 62 is in communication with the two guide grooves 61, the guide grooves 61 are opposite to the fixed blocks 51 in the up-down direction, and one end of the fixed block 51 is inserted into the guide groove 61 to slide and can rotate into the fixed groove 62.

[0026] When the four connecting rods 6 are respectively inserted into the four locking cylinders 4, the plurality of guide grooves 61 are respectively opposite to the plurality of fixed blocks 51 inserted into the locking cylinder 4, so that the plurality of fixed blocks 51 are inserted into the plurality of guide grooves 61. When the insertion end of the connecting rod 6 moves to the bottom end inside the locking cylinder 4, the annular fixed groove 62 formed on the outer wall of the connecting rod 6 is opposite, the rotating ring 5 is rotated to make the fixed block 51 connected to be separated from the guide groove 61 and inserted into the fixed groove 62, and the connecting rod 6 is constrained and fixed in the locking cylinder 4, that is, the installation of the protective plate 3 is completed, and the protective plate 3 is convenient to disassemble and assemble.

[0027] Further preferably, the locking cylinder 4 is provided with a constraint port 42 matched with the two fixed blocks 51, one end of the fixed block 51 is inserted into the constraint port 42, and the connecting rod 6 is inserted into the locking cylinder 4, and the constraint port 42 is opposite to the fixed groove 62.

[0028] The two constraint ports 42 formed on the outer wall of the locking cylinder 4 make the two fixed blocks 51 inserted into the locking cylinder 4, and the rotating ring 5 is constrained on the outer wall of the locking cylinder 4.

[0029] Further preferably, a plurality of screw holes are formed on the outer surface of the tail end 1 of the exhaust pipe, and a plurality of locking cylinders 4 are respectively fixed on the outer surface of the tail end 1 of the exhaust pipe through screws 41.

[0030] The locking cylinder 4 is screwed through the bottom of the locking cylinder 4 and connected to the screw hole at the tail end 1 of the exhaust pipe through the screw 41, so as to fix the locking cylinder 4 on the tail end 1 of the exhaust pipe.

[0031] Further preferably, the protective plate 3 is made of stainless steel, a plurality of heat dissipation holes are formed on the outer wall of the protective plate 3, and the locking cylinder 4 and the rotating ring 5 are respectively provided with a mark line 7.

[0032] The protective plate 3 is made of stainless steel, which improves the service life and rigidity of the protective plate 3, prevents rust of the protective plate 3, and reduces the shielding of the tail end 1 of the exhaust pipe by the protective plate 3 through the plurality of heat dissipation holes formed on the outer wall of the protective plate 3.

[0033] Further preferably, the heat insulation plate 2 is a plastic plate made of polytetrafluoroethylene.

[0034] The heat insulation plate 2 is a plastic plate made of polytetrafluoroethylene, which has good heat insulation and high temperature resistance.

[0035] The utility model discloses when installing and disassembling: the plurality of connecting rods 6 are aligned with the plurality of symmetrical locking cylinders 4, and the plurality of guide grooves 61 that are longitudinally arranged on the outer wall of the connecting rod 6 are used, when four connecting rods 6 are respectively inserted in four locking cylinders 4, the plurality of guide grooves 61 respectively with the fixed block 51 that is inserted in the inside of locking cylinder 4 are mutually opposite, make the plurality of fixed blocks 51 are inserted in the plurality of guide grooves 61, when the connecting rod 6 insertion end moves to the bottom end in the inside of locking cylinder 4, the fixed groove 62 of annular shape that the connecting rod 6 outer wall sets up is opposite, and rotating the rotary ring 5 makes the fixed block 51 of connection separate from the guide groove 61 and be inserted in the fixed groove 62, and connecting rod 6 is constrained and fixed in locking cylinder 4, can complete the installation of protective plate 3, and when disassembling, the mark line 7 on the rotary ring 5 is rotated to the mark line 7 one end on locking cylinder 4 alignment, make the fixed block 51 rotate to the guide groove 61, and connecting rod 6 can be taken out.

[0036] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0037] In the utility model, unless otherwise explicitly specified and limited, the terms "installation", "arrangement", "connection", "fixing", "screw connection" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or be integrated, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning of the specific circumstances by the ordinary skilled person in the art.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by the ordinary skilled person in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A motorcycle engine exhaust pipe comprising an exhaust pipe tail end (1), characterised in that: The tail end (1) of the exhaust pipe is provided with a protective plate (3) on the outer surface, both ends of the protective plate (3) are fixedly provided with heat insulation plates (2), the inner surfaces of the two heat insulation plates (2) are respectively fixedly provided with two connecting rods (6), the outer surface of the tail end (1) of the exhaust pipe is fixedly provided with a plurality of locking cylinders (4) in a symmetrical manner, one end of each of the connecting rods (6) is inserted into the opposite locking cylinder (4), the outer wall of the locking cylinder (4) is rotatably provided with a rotating ring (5), the inner side of the rotating ring (5) is provided with two fixing blocks (51) for locking the connecting rod (6), one end of the fixing block (51) is inserted into the inside of the connecting rod (6) through the locking cylinder (4).

2. A motorcycle engine exhaust pipe according to claim 1, characterized in that: The outer wall of the connecting rod (6) is longitudinally provided with two symmetrically distributed guide grooves (61), the outer wall of the connecting rod (6) is annularly provided with a fixing groove (62), the fixing groove (62) is in communication with the two guide grooves (61), the guide grooves (61) are opposite to the fixing blocks (51) in the up and down direction, one end of the fixing block (51) is inserted into the guide groove (61) and can rotate into the inside of the fixing groove (62).

3. An exhaust pipe for a motorcycle engine according to claim 2, characterized in that: The outer wall of the locking cylinder (4) is provided with a constraint opening (42) matched with the two fixing blocks (51), one end of the fixing block (51) is inserted into the constraint opening (42), the connecting rod (6) is inserted into the inside of the locking cylinder (4), and the constraint opening (42) is opposite to the fixing groove (62).

4. An exhaust pipe for a motorcycle engine according to claim 1, characterized in that: The outer surface of the tail end (1) of the exhaust pipe is provided with a plurality of screw holes, and the plurality of locking cylinders (4) are fixed to the outer surface of the tail end (1) of the exhaust pipe by screws (41).

5. An exhaust pipe for a motorcycle engine according to claim 4, characterized in that: The protective plate (3) is made of stainless steel, the outer wall of the protective plate (3) is provided with a plurality of heat dissipation holes, and the locking cylinder (4) and the rotating ring (5) are respectively provided with a mark line (7) at the edge.

6. An exhaust pipe for a motorcycle engine according to claim 1, characterized in that: The heat insulation plate (2) is a plastic plate made of polytetrafluoroethylene.

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