CN2797197Y

CN2797197Y - Shaft driving buffer mechanism

Info

Publication number: CN2797197Y
Application number: CN 200520009451
Authority: CN
Inventors: 付置贵; 高同大; 杨驰
Original assignee: CHONGQING CHUANYU JINGGONG MECHANICAL ACCESSORIES DEVELOPMENT Co Ltd
Current assignee: CHONGQING CHUANYU JINGGONG MECHANICAL ACCESSORIES DEVELOPMENT Co Ltd
Priority date: 2005-06-08
Filing date: 2005-06-08
Publication date: 2006-07-19
Anticipated expiration: 2015-06-08

Abstract

The utility model discloses a driving and buffering mechanism of a motor shaft used for an automotive vehicle. The utility model is characterized in that a power input shaft driven by a shaft is connected with a power output shaft 12 by a spline sleeve 7 of which the outer side is provided with a pressure spring 6 in a splined connection, the front end of the power output shaft 12 is provided with an outer R-shaped groove, the outer R-shaped groove is matched with an inner R-shaped groove of the power input shaft, and steel balls 14 are arranged in the inner and the outer R-shaped grooves. The utility model has the advantages of easy installation and easy fabrication. The utility model has the advantages that the utility model can effectively eliminate high-low frequency resonance vibration, can lower noise, and can really realize the flexible connection of torque transfer driven by a shaft; the utility model has cushioning action.

Description

A kind of shaft drive buffer mechanism

Technical field

The utility model relates to a kind of shaft drive buffer mechanism, and particularly a kind of self-propelled vehicle that is used for is as the shaft drive buffer mechanism of two-wheeled, three-wheel, four-wheel motor cycle, beach buggy.

Background technology

In the present shaft drive, its power input shaft and power take-off shaft often are directly to assemble by universal-joint, this direct mounting structure belongs to hard transmission (being positive drive) in power transmission process, because the change of transmission speed, particularly object is in the moment of quickening, and is quite big for the impact of shaft drive propulsion source.Engine shaft transmission with power actuated vehicle is an example, their driving engine adopt mostly transmission shaft by and universal-joint and rear-end gear reduction between rigidly connected structure, this being rigidly connected can be along with the change of vehicular drive operating mode, as speed-raising, gear shift or with jolting that Uneven road causes, all can produce a kind of alternating shock load, the recoil that this alternating shock load forms can be delivered to the power input shaft of shaft drive, pass to the engine output shaft that directly assembles with it again, thereby to power-transfer clutch, change speed gear box, universal-joint, driving engine impacts, produce bigger noise, shortened power-transfer clutch, change speed gear box, universal-joint, the service life of driving engine, flame-out phenomenon also can appear sometimes, bring human discomfort to driver and crew, also can cause safety misadventure when serious.

In order to reduce impact to propulsion source, CN1188611C discloses a kind of " shaft drive buffer mechanism " that is used for engine shaft transmission gear reversing device, and it is to set up a buffer gear as the engine output shaft of power input shaft and the power input shaft inner room as the shaft drive of power take-off shaft.And less for 100ml～this installation site of 200ml motor cycle engine, inconvenience is installed, and makes the manufacturing process difficulty of each parts strengthen the occasion that this suitable dimensions structure is bigger.

Summary of the invention

The purpose of this utility model is to provide a kind of shaft drive buffer mechanism of making, installing be convenient to.

The purpose of this utility model is achieved in that a kind of shaft drive buffer mechanism, it is characterized in that: driven off by shaft power input shaft has the spline housing spline of stage clip to be connected with takeoff output beam warp overcoat, and R groove outside the front end of described power take-off shaft is provided with, be somebody's turn to do the interior R groove coupling of outer R groove and described power input shaft, in inside and outside R groove, be provided with steel ball.

Above-mentioned power input shaft is an axle sleeve, and this axle sleeve is connected for the straight-tooth spline with the outer garden of described spline housing, and the endoporus of described spline housing is connected for the helical tooth spline with described power take-off shaft.

Above-mentioned axle sleeve has the steel ball mounting hole that communicates with described interior R groove outward.

One end of above-mentioned stage clip contacts with described axle sleeve outer face, and the other end contacts with the axial step inner end surface that is arranged at described spline housing; The axial step outer face of described spline housing contacts with the axial step inner end surface of described power take-off shaft.

Above-mentioned spline housing is with spring perch outward, and this spring perch contacts with the axial step inner end surface of described spline housing, and stage clip is placed in outside the described spring perch, and the one end contacts with spring perch, and the other end of stage clip contacts with the outer face of described power input shaft; The axial step outer face of described spline housing contacts with the axial step inner end surface of described power take-off shaft.Why the utility model sets up spring perch outside spline housing, mainly be to make in order on technology, to be convenient to, because desire is processed into the step surface with stage clip equal diameters with an end of spline housing, the technology difficulty of its processing male splines will be very big, for the ease of processing, reduce manufacturing cost, at spline housing overcoat one spring perch, the preferred version of can yet be regarded as.

In addition, above-mentioned with power input shaft and power take-off shaft bonded assembly spline housing, the form of male splines is disposable in it, and it also can be that the outer garden of spline housing is connected with power input shaft helical tooth spline, and the endoporus of spline housing is connected for the straight-tooth spline with power take-off shaft.

When this buffer gear is installed on the castellated shaft of engine shaft transmission gear reversing device, one end of this castellated shaft is the power input shaft of axle sleeve as buffer gear, and the output shaft that links to each other through spline housing is connected with rear-end gear reduction as the power take-off shaft of buffer gear with it; Be provided with pin in the steel ball mounting hole of on the axle sleeve of described castellated shaft, opening, the axle sleeve of described castellated shaft outer through bearing fixing in casing, output shaft, and is sealed by case lid in casing through bearing fixing.

As everyone knows, in shaft drive,, all be rigidly connected without exception because power input shaft and power take-off shaft pass to back axle or propons by universal-joint with moment of torsion.So need set up a mechanism to reach the purpose of buffering at two between centers.In the utility model, spline housing is a core members, for it is inside spin tooth (dextrorotation or left-handed), the still interior straight-tooth of outer straight-tooth spline, external spiral tooth spline (dextrorotation or left-handed), can determine according to the particular location that this buffer gear is arranged on shaft drive, in a word, the form of male splines in the spline housing, it mainly is the economy made from the counteracting and the technology of solution axial force, axial force should be offset on the transmission shaft of shaft drive and to be determined, as long as the energy head it off, the form of the interior male splines of spline housing is all in the utility model scope required for protection; In the utility model, also have a critical component to be provided with steel ball exactly, this ingenious design of the utility model, axial location and radial centering that the end that guaranteed power take-off shaft in limited bulk and castellated shaft also are power input shaft have been solved, form an antifriction-bearing box bigger by steel ball and inside and outside R groove than deep groove ball bearing axial stiffness, be enough to offset the axial force of stage clip, thereby reached castellated shaft and the counterrotating purpose of output shaft.In a word, the utility model is installed between the castellated shaft and output shaft of shaft drive gear reversing device, and is not only easy to make, is convenient to install, and can also reach the purpose of buffering effectively.

Below in conjunction with description of drawings and most preferred embodiment the utility model is further described.

Description of drawings

Fig. 1 is installed on example structure scheme drawing in the engine for motorcycle shaft drive gear reversing device for the utility model;

Fig. 2 is the STRUCTURE DECOMPOSITION figure of the utility model embodiment.

The specific embodiment

Referring to above-mentioned accompanying drawing, a kind of shaft drive buffer mechanism, it is characterized in that: driven off by shaft power input shaft and power take-off shaft 12 through outside be with stage clip 6 spline housing 7 splines be connected, and R groove outside the front end of described power take-off shaft 12 is provided with, be somebody's turn to do the interior R groove coupling of outer R groove and power input shaft, in inside and outside R groove, be provided with steel ball 14.

Above-mentioned power input shaft is an axle sleeve 18, and this axle sleeve 18 is connected for the straight-tooth spline with described spline housing 7 outer gardens, and the endoporus of described spline housing 7 is connected for the helical tooth spline with described power take-off shaft 12; The above-mentioned axle sleeve 18 outer steel ball mounting hole 18a that communicate with described interior R groove that have.

The utility model is applied in the engine for motorcycle shaft drive gear reversing device particularly: at this moment, one end of the castellated shaft 15 of gear reversing device is the power input shaft of axle sleeve 18 as buffer gear, and the output shaft that links to each other through spline housing 7 is connected with rear-end gear reduction as the power take-off shaft 12 of buffer gear with it; 18a is provided with pin (inner ring of bearing 13 will limit pin and skid off in the steel ball mounting hole of opening on the axle sleeve 18 of castellated shaft 15, thereby guaranteed steel ball orderly arrangement and rolling in the trajectory that inside and outside R groove forms), this castellated shaft axle sleeve 18 is outer in bearing 13 is fixed in casing 1, the axial step outer face of spline housing 7 contacts with the axial step inner end surface of output shaft, output shaft is in bearing 8 is fixed in casing 1, and by case lid 9 sealing.

The above-mentioned spline housing 7 outer spring perches 11 that are with, this spring perch 11 contacts with the axial step inner end surface of described spline housing 7, stage clip 6 is placed in outside the described spring perch 11, and the one end contacts with described spring perch 11, and the other end of described stage clip 6 contacts with the outer face of described axle sleeve 18; The axial step outer face of described spline housing 7 contacts with the axial step inner end surface of described output shaft.

Owing between shaft drive gear reversing device and rear-end gear reduction, set up buffer gear, so when speed-raising, gear shift or with jolting of causing of Uneven road and the alternating shock load that produces drives spline housing 7 axial motions through the castellated shaft rotation, compression press spring 6 (absorption impulsive force), this moment castellated shaft 15, power take-off shaft 12 will be done the rotation of variable speed, and by steel ball 14, in, outer R groove is passed to the tension force (axial force) of stage clip 6 the axle sleeve 18 outer step end faces of castellated shaft 15, and through spring perch 11, spline housing 7 axial ends, the step inner end surface of output shaft is offset the tension force (axial force) of stage clip 6, reach balance, eliminated the height that produces in the power transmission process effectively, low-frequency resonance, absorb energy, thereby reach the purpose of buffering, reduced impact to propulsion source, reduce noise and vibration simultaneously, prolonged the service life of driving engine and shaft drive gear reversing device.

Claims

1, a kind of shaft drive buffer mechanism, it is characterized in that: driven off by shaft power input shaft and power take-off shaft (12) through outside be with stage clip (6) spline housing (7) spline be connected, and R groove outside the front end of described power take-off shaft (12) is provided with, be somebody's turn to do the interior R groove coupling of outer R groove and power input shaft, in inside and outside R groove, be provided with steel ball (14).

2, shaft drive buffer mechanism as claimed in claim 1, it is characterized in that: described power input shaft is axle sleeve (18), this axle sleeve (18) is connected for the straight-tooth spline with the outer garden of described spline housing (7), and the endoporus of described spline housing (7) is connected for the helical tooth spline with described power take-off shaft (12).

3, shaft drive buffer mechanism as claimed in claim 2 is characterized in that: the outer steel ball mounting hole (18a) that communicates with described interior R groove that has of described axle sleeve (18).

4, as claim 2 or 3 described shaft drive buffer mechanisms, it is characterized in that: an end of described stage clip (6) contacts with described axle sleeve (18) outer face, and the other end contacts with the axial step inner end surface that is arranged at described spline housing (7); The axial step outer face of described spline housing (7) contacts with the axial step inner end surface of described power take-off shaft (12).

5, shaft drive buffer mechanism as claimed in claim 1, it is characterized in that: the outer spring perch (11) that is with of described spline housing (7), this spring perch (11) contacts with the axial step inner end surface of described spline housing (7), stage clip (6) is placed in outside the described spring perch (11), the one end contacts with spring perch (11), and the other end of stage clip (6) contacts with the outer face of described power input shaft; The axial step outer face of described spline housing (7) contacts with the axial step inner end surface of described power take-off shaft (12).

6, shaft drive buffer mechanism as claimed in claim 2, it is characterized in that: the outer spring perch (11) that is with of described spline housing (7), this spring perch (11) contacts with the axial step inner end surface of described spline housing (7), stage clip (6) is placed in outside the described spring perch (11), the one end contacts with spring perch (11), and the other end of stage clip (6) contacts with the outer face of described axle sleeve (18); The axial step outer face of described spline housing (7) contacts with the axial step inner end surface of described power take-off shaft (12).

7, shaft drive buffer mechanism as claimed in claim 1 is characterized in that: described power input shaft is connected for the helical tooth spline with the outer garden of described spline housing (7), and the endoporus of described spline housing (7) is connected for the straight-tooth spline with described power take-off shaft (12).

8, as claim 1,2 or 3 described shaft drive buffer mechanisms, it is characterized in that: this buffer gear is installed on the castellated shaft (15) of engine shaft transmission gear reversing device, one end of this castellated shaft (15) is the power input shaft of axle sleeve (18) as buffer gear, and the output shaft that links to each other through spline housing (7) is connected with rear-end gear reduction as the power take-off shaft (12) of buffer gear with it; Be provided with pin in the steel ball mounting hole of on the axle sleeve (18) of described castellated shaft (15), opening (18a), the axle sleeve (18) of described castellated shaft (15) is outer in bearing (13) is fixed in casing (1), the axial step outer face of described spline housing (7) contacts with the axial step inner end surface of output shaft, output shaft and is sealed by case lid (9) in bearing (8) is fixed in casing (1).

9, shaft drive buffer mechanism as claimed in claim 4, it is characterized in that: this buffer gear is installed on the castellated shaft (15) of engine shaft transmission gear reversing device, one end of this castellated shaft (15) is the power input shaft of axle sleeve (18) as buffer gear, and the output shaft that links to each other through spline housing (7) is connected with rear-end gear reduction as the power take-off shaft (12) of buffer gear with it; Be provided with pin in the steel ball mounting hole of on the axle sleeve (18) of described castellated shaft (15), opening (18a), the axle sleeve (18) of described castellated shaft (15) is outer in bearing (13) is fixed in casing (1), output shaft and is sealed by case lid (9) in bearing (8) is fixed in casing (1).

10, as claim 5 or 6 described shaft drive buffer mechanisms, it is characterized in that: this buffer gear is installed on the castellated shaft (15) of engine shaft transmission gear reversing device, one end of this castellated shaft (15) is the power input shaft of axle sleeve (18) as buffer gear, and the output shaft that links to each other through spline housing (7) is connected with rear-end gear reduction as the power take-off shaft (12) of buffer gear with it; Be provided with pin in the steel ball mounting hole of on the axle sleeve (18) of described castellated shaft (15), opening (18a), the axle sleeve (18) of described castellated shaft (15) is outer in bearing (13) is fixed in casing (1), output shaft and is sealed by case lid (9) in bearing (8) is fixed in casing (1).