CN2723688Y

CN2723688Y - Pressed gear shaft sleeve

Info

Publication number: CN2723688Y
Application number: CN 200420060986
Authority: CN
Inventors: 尹明善; 程应维; 蒋文丽
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2004-08-27
Filing date: 2004-08-27
Publication date: 2005-09-07
Anticipated expiration: 2014-08-27

Abstract

The utility model relates to a pressed gear shaft sleeve used for installing the restoring time driving gear on the bent axle handle of the autobicycle. The structure feature of the utility model is that an included angle is formed between a positioning pin 2 arranged on the large diameter end of a sleeve barrel 1 and the central line of a key groove 7 on a positioning sleeve barrel 3, and the positioning pin 2 comprises pins and a compression spring under the pins. The side wall of the sleeve barrel 1 is provided with a guide groove 5 and a key groove 6, and the interior of the sleeve barrel 1 is provided with the positioning sleeve barrel 3 which is provided with a pin 4 arranged in the guide groove 5 of the sleeve barrel 1. When the gear is installed, because of the preset angle between the positioning pin 2 and the central lines of the three key grooves on the positioning sleeve barrel 3 and the axial guiding of the pin 4 on the positioning sleeve barrel 3 in the guide groove 5, the positioning pin 2 can be arranged correctly in the gear backlash between the two basic standard teeth of a spur gear. Consequently, the gear can be positioned correctly on a bent axle handle 8 so that the assembly efficiency and the centering performance are improved, and the end face of the gear can not be damaged simultaneously.

Description

Press-fit gear bush

Technical field

The utility model relates to a kind of auxiliary device that gear is installed, and relates in particular to a kind of gear bush that press-fits that is used to install timing driving gear on the motorcycle crankshaft handle.

Background technique

At present, during timing driving gear on press-fiting the motorcycle crankshaft handle, its alignment determines that by key on the crankshaft handle and people's naked eyes artifical influence factor is big, inefficiency, functional reliability is poor, and simultaneously, locating stud and sleeve are for being rigidly connected, can not axial adjustment, just having slightly not when press-fiting gear, damaging gear face easily, thereby causing defectives such as engine speed and power instability, firing time be inaccurate.

The model utility content

The purpose of this utility model provides a kind of gear bush that press-fits that is used to install timing driving gear on the motorcycle crankshaft handle, and it is the easy damaged gear face neither, can improve gear installation efficiency and functional reliability again.

In order to solve the problems of the technologies described above, concrete scheme of the present utility model is: comprise sleeve and the locating stud that is installed in the sleeve larger diameter end, sleeve is provided with the keyway that matches with key on the crankshaft handle, it is characterized in that: the described locating stud of A. is by forming to the pressure spring of pin that be arranged in parallel and pin below with quill; B. also be provided with guiding groove on sleeve lateral wall, abutment sleeve is housed in sleeve, a side of this abutment sleeve has keyway, and opposite side is equipped with pin, and pin places the guiding groove of sleeve, and the center line and the locating stud of keyway have angle.

In the utility model, because the pin on the abutment sleeve is axially directed in guiding groove, and can retrain gear rotates around crankshaft handle, and the center line of keyway has predetermined angle on locating stud and the abutment sleeve, make locating stud can place backlash between spur wheel two datum tooths exactly, gear is promptly accurately located on crankshaft handle, and the angle of keyway center line is preferably 8.2 ° on locating stud and the abutment sleeve; In addition, the utility model can be realized axial adjustment owing to be provided with pressure spring below the pin of locating stud, even deviation is arranged slightly when press-fiting, also can not cause the gear face damage.

Remarkable result of the present utility model is: easy damaged gear face neither, can improve the supporting efficient of gear again, improved when supporting to neutrality and functional reliability.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Fig. 1 is a structural drawing of the present utility model.

Fig. 2 is the right elevation of Fig. 1.

Fig. 3 is the plan view of Fig. 1.

Fig. 4 is the sectional drawing of abutment sleeve 3.

Fig. 5 is the plan view of Fig. 4.

Fig. 6 is for installing the working gear schematic representation.

Embodiment

Please see Figure 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, the utility model mainly is made up of sleeve 1, locating stud 2, abutment sleeve 3, pin 4, annexation and structure outline between them are: at sleeve 1 larger diameter end installing and locating pin 2, sleeve 1 is provided with the keyway 6 that matches with key on the crankshaft handle 8; Described locating stud 2 is by forming with the pin of sleeve 1 parallel to an axis setting and the pressure spring of pin below; Also be provided with guiding groove 5 on sleeve 1 sidewall, abutment sleeve 3 is housed in sleeve 1, a side of this abutment sleeve 3 has keyway 7, and opposite side is equipped with pin 4, and pin 4 places the guiding groove 5 of sleeve 1, and the center line of keyway 7 and locating stud 2 have angle.

As shown in Figure 3: the angle angle of the center line of keyway 7 is 8.2 ° a odd-multiple on locating stud 2 and the abutment sleeve 3.Present embodiment has been selected best angle, and its angle is designed to 8.2 °.

As Fig. 4, shown in Figure 5: as described in a side of abutment sleeve 3 have keyway 7, opposite side is drilled with pin hole 9,4 one of pins are fastened in the pin hole 9.

As shown in Figure 6: when gear is installed, earlier gear 10 is enclosed within on the crankshaft handle 8, again sleeve 1 is enclosed within on the crankshaft handle 8, sleeve 1 is positioned at the top of gear 10, make key on the crankshaft handle 8 fall into the keyway 6 of sleeve 1 one sides, pin on the abutment sleeve 34 is inserted in the guiding groove 5 of sleeve 1 opposite side, observe the centering situation by the keyway on the abutment sleeve 37, then locating stud 2 is placed exactly the backlash between 10 liang of datum tooths of timing driving gear, timing driving gear 10 is promptly accurately located on crankshaft handle 8.When hydraulic press applied axial pressure in the upper end of sleeve 1, timing driving gear 10 promptly was installed on the crankshaft handle 8 exactly, takes out the utility model at last.

Claims

1. one kind press-fits gear bush, comprise sleeve (1) and be installed in the locating stud (2) of sleeve (1) larger diameter end, sleeve (1) is provided with the keyway (6) that matches with key on the crankshaft handle (8), it is characterized in that: the described locating stud of A. (2) is made up of the pin that is provided with sleeve (1) parallel to an axis and the pressure spring of pin below; B. on sleeve (1) sidewall, also be provided with guiding groove (5), abutment sleeve (3) is housed in sleeve (1), one side of this abutment sleeve (3) has keyway (7), opposite side is equipped with pin (4), pin (4) places the guiding groove (5) of sleeve (1), and the center line of keyway (7) and locating stud (2) have angle.

2. press-fit gear bush according to claim 1 is described, it is characterized in that: the angle angle that described locating stud (2) and abutment sleeve (3) are gone up the center line of keyway (7) is 8.2 ° a odd-multiple.