CN209539944U - Motorcycle transmission belt tensioning mechanism - Google Patents

Abstract

The utility model discloses a kind of motorcycle transmission belt tensioning mechanisms, including cabinet, belt gear, tension adjustment mechanism；The belt gear, tension adjustment mechanism are all mounted in cabinet, and the first middle part of swing arm of idle pulley rocker arm has a through-hole, and the inner wall of cabinet offers fixation hole and the fixed hole position is in the wobble line of the first middle part of swing arm through-hole.When that need to repair or replace odontoid belt, idle pulley rocker arm is turned into two holes and is aligned and is put into a fixation hosel or bolt, wheel will be compressed and be fixed on the position for leaving odontoid belt surface, so as to odontoid belt dismounting operation.

Description

Motorcycle transmission belt tensioning mechanism

Technical field

The utility model relates to a kind of motorcycles, more particularly to a kind of motorcycle transmission belt tensioning mechanism.

Background technique

The speed belt of general known scooter and driving and be through frictional force drives, skin between driving belt pulley There is slippages between band and belt pulley, meanwhile, the diameter tended to act can be changed because of the variation of speed between the belt pulley of front and back, That is the movement kenel of belt is changing always with speed.Furthermore general vehicle consider in design structure it is simple and compared with Low manufacturing cost is usually designed to open design, just as the driving chain of general knight's vehicle, is directly exposed at vehicle Outside, and also as traditional knight's vehicle, through the rear wheel position adjustment mechanism on rear fork, adjust rear tread so as to To suitable belt tension, make the problems such as belt smooth movements are without jumping tooth or shake.Although such traditional design at This is cheap, but there is following disadvantages: being easy directly to contact and generate with muddy water with the sand and dust in environment under environment exposed first Abrasion, shortens the service life of belt and belt pulley indirectly, the second is open environment has an opportunity to roll up between vehicle traveling Enter the sundries on road surface, and cause system of vehicle transmission stuck, vehicle instantaneous stop causes driver to fall the security risk of vehicle.

As shown in Figure 1, therefore, someone improves this, by driving belt device in a closed transmission case body 1 ' Within, for this design of arranging in pairs or groups, driving wheel 2 ' is designed to that fixation cannot be adjusted with by the wheelbase of driving wheel 3 ', and because wheelbase is fixed It would therefore be desirable to have additional tension adjustment mechanisms 4 ' to adjust belt tension, operates belt 5 ' smoothly.This belt Power adjustment mechanism 4 ' have one it is free to rotate and stressed idle pulley 42 ' applied to the contact of belt 5 ', an idle pulley Rocker arm 43 ' its One end installs above-mentioned idle pulley 42 ' and has a rotating fulcrum, and the 3 ' other end of idle pulley Rocker arm 4 is force side, and another setting one stretches Spring 41 ' acts on force side, and strength makes idle pulley 42 ' provide the pushing of belt 41 ' one through rocker arm pivot rotating idler roller Rocker arm 43 ' Power, and then adjust 41 ' tension of suitable belt needed for vehicle.And in order to minimize setting tension adjustment mechanism 4 ' needed for sky Between, for the setting of extension spring 41 ' in the space surrounded carried out by two belt pulleys and belt 5 ', idle pulley 42 ' is then to be set to belt 5 ' outer space, and in order to connect idle pulley 42 ' and extension spring 41 ', idle pulley Rocker arm 43 ' under the axial visual angle of drive shaft, It is designed to form staggered design feature with across belt, most tension adjustment mechanism is placed in skin through this design With inside originally the space without use so that the size of transmission case body be able to it is more compact.But this structure design is due to idle pulley 42 ' apply pressure to belt 41 ' always, when replacing belt, need to overcome this lower pressure, there is replacement inconvenience Problem.

Utility model content

The purpose of this utility model is to provide a kind of convenient motorcycle transmission belt tensioning mechanisms of belt replacing.

To achieve the above object, the technical solution of the utility model is:

The utility model is a kind of motorcycle transmission belt tensioning mechanism, including cabinet, belt gear, tension adjustment Mechanism；The belt gear, tension adjustment mechanism are all mounted in cabinet；Belt in the belt gear is Flute profile belt；The tension adjustment mechanism includes pre- tension spring, idle pulley rocker arm, compresses wheel, and the idle pulley rocker arm is by the first pendulum Arm and the second swing arm are constituted, the first swing arm and the second swing arm intersection at an acute angle, and the junction of the first swing arm and the second swing arm is hinged On the inner wall of cabinet, one end of pre- tension spring is connected in the first swing arm, and the other end of pre- tension spring is connected on the inner wall of cabinet, Wheel is compressed to be fixed in the second swing arm of idle pulley rocker arm；It is characterized by: the first middle part of swing arm of the idle pulley rocker arm has one A through-hole, the inner wall of cabinet offers fixation hole and the fixed hole position is in the wobble line of the first middle part of swing arm through-hole, can pass through Bolt is inserted on the fixation hole of cabinet wall after the through-hole of the first middle part of swing arm of idle pulley rocker arm, and idle pulley rocker arm is fixed.

The utility model further includes idle pulley rocker arm shaft and gasket；First swing arm and the second pendulum in the tension adjustment mechanism The junction of arm offers hinge hole, after the screw rod on idle pulley rocker arm shaft sequentially passes through the hinge hole of gasket, tension adjustment mechanism It is fixed on the inner wall of cabinet, between idle pulley rocker arm shaft screw head and cabinet wall face, idle pulley rocker arm shaft screw head plays gasket Limit the effect that idle pulley rocker arm horizontal direction is swung.

After adopting the above scheme, since the utility model is when replacing belt, idle pulley is passed through using Fixed latches or bolt It is inserted into after the through-hole of the first middle part of swing arm of rocker arm on the fixation hole of cabinet wall, and idle pulley rocker arm is fixed, wheel will be compressed and fixed In the position for leaving odontoid belt surface, odontoid belt will not be oppressed by compressing wheel, so as to odontoid belt dismounting operation；More into one Step, since idle pulley rocker arm shaft screw head plays the role of limiting the swing of idle pulley rocker arm horizontal direction, so that the utility model is integrally transported Row is more stable.

The utility model is further described in the following with reference to the drawings and specific embodiments.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of traditional transmission belt dressing；

Fig. 2 is the stereogram exploded view of the utility model；

Fig. 3 is the axonometric drawing of the utility model；

Fig. 4 is the schematic diagram that the utility model compresses wheel compressing odontoid belt；

Fig. 5 is the schematic diagram that the utility model compresses that wheel does not oppress odontoid belt.

Specific embodiment

As Figure 2-Figure 5, the utility model is a kind of motorcycle transmission belt tensioning mechanism, including cabinet 1, belt pass Motivation structure 2, tension adjustment mechanism 3.

The belt gear 2, tension adjustment mechanism 3 are all mounted in cabinet 1.

Belt 21 in the belt gear 2 selects flute profile belt, i.e. belt inner surface has dentation, corresponding to drive There is flute profile corresponding with belt 21 with by driving belt pulley in dynamic belt pulley, operate and do not deposit between middle belt pulley and belt 21 In slippage, transmission it is high-efficient.

The tension adjustment mechanism 3 includes pre- tension spring 31, idle pulley rocker arm 32, compresses wheel 33；The idle pulley rocker arm 32 It is made of the first swing arm 321 and the second swing arm 322, the first swing arm 321 and the intersection at an acute angle of the second swing arm 322, the first swing arm 321 It is hinged on the inner wall of cabinet 1 with the junction of the second swing arm 322, one end of pre- tension spring 31 is connected in the first swing arm 321, in advance The other end of tension spring 31 is connected on the inner wall of cabinet 1, is compressed wheel 33 and is fixed in the second swing arm 322 of idle pulley rocker arm 32.

There is a through-hole 3211, the inner wall of cabinet 1 offers fixation in the middle part of first swing arm 321 of the idle pulley rocker arm 32 Cabinet 1 is dismantled when replacing belt for the hole 11 and fixation hole 11 is located in the wobble line of 321 middle through-hole 3211 of the first swing arm When, 1 inner wall of cabinet is inserted into after arbitrarily taking a bolt removed to pass through the through-hole 3211 at 32 first swing arm of idle pulley rocker arm, 321 middle part On fixation hole 11, and idle pulley rocker arm 32 is fixed, so that idle pulley rocker arm 32 is not oppressed tooth in belt gear 2 in wheel 33 is compressed The position of shape belt 21.

Preferred scheme are as follows: further include idle pulley rocker arm shaft 34 and gasket 35；The 3 idle pulley rocker arm 32 of tension adjustment mechanism In the junction of the first swing arm 321 and the second swing arm 322 offer hinge hole, the screw rod 341 on idle pulley rocker arm shaft 34 is successively worn It is fixed on the inner wall of cabinet 1 after crossing the hinge hole of gasket 35, tension adjustment mechanism 3, gasket 35 is located at 34 spiral shell of idle pulley rocker arm shaft Between first 342 and 1 inner wall of cabinet, 34 screw head 342 of idle pulley rocker arm shaft plays the work that limitation 32 horizontal direction of idle pulley rocker arm is swung With keeping overall operation more stable.

Working principle of the utility model is:

When needing to change belt 21, the convenience of replacement can be hindered by compressing 33 compressing odontoid belt 31 of wheel, since idle pulley shakes A through-hole 3211 is provided on arm 32, and setting one is corresponding on 1 suitable position of cabinet of idle pulley rocker arm pivot direction of rotation Fixation hole 11, idle pulley rocker arm 34 is turned into two holes when need to repair odontoid belt 21 and is aligned and is put into a bolt, wheel will be compressed 33 are fixed on the position for leaving 21 surface of odontoid belt, so as to 21 dismounting operation of odontoid belt.

The above, only the utility model preferred embodiment, therefore the utility model implementation cannot be limited with this Range should still belong to this reality that is, according to equivalent changes and modifications made by present utility model application the scope of the patents and description In the range of being covered with new patent.

Claims (2)

1. a kind of motorcycle transmission belt tensioning mechanism, including cabinet, belt gear, tension adjustment mechanism；The skin Tape handler, tension adjustment mechanism are all mounted in cabinet；Belt in the belt gear is flute profile belt；It is described Tension adjustment mechanism include pre- tension spring, idle pulley rocker arm, compress wheel, the idle pulley rocker arm is by the first swing arm and the second swing arm structure At, the junction of the first swing arm and the second swing arm intersection at an acute angle, the first swing arm and the second swing arm is hinged on the inner wall of cabinet, One end of pre- tension spring is connected in the first swing arm, and the other end of pre- tension spring is connected on the inner wall of cabinet, compress wheel be fixed on it is lazy In the second swing arm for taking turns rocker arm；It is characterized by: the first middle part of swing arm of the idle pulley rocker arm have a through-hole, cabinet it is interior Wall offers fixation hole and the fixed hole position is in the wobble line of the first middle part of swing arm through-hole, can pass through idle pulley rocker arm by bolt It is inserted into after the through-hole of first middle part of swing arm on the fixation hole of cabinet wall, and idle pulley rocker arm is fixed.

2. motorcycle transmission belt tensioning mechanism according to claim 1, it is characterised in that: further include idle pulley rocker arm shaft and Gasket；The junction of the first swing arm and the second swing arm offers hinge hole in the tension adjustment mechanism, on idle pulley rocker arm shaft Screw rod sequentially pass through the hinge hole of gasket, tension adjustment mechanism after be fixed on the inner wall of cabinet, gasket is located at idle pulley rocker arm Between axis screw head and cabinet wall face, idle pulley rocker arm shaft screw head plays the role of limiting the swing of idle pulley rocker arm horizontal direction.