CN2895864Y

CN2895864Y - Jointing structure of clutch body and shaft

Info

Publication number: CN2895864Y
Application number: CN 200620103568
Authority: CN
Inventors: 徐滨宽; 史兰萍
Original assignee: ZHEJIANG JILI SPEED VARIATOR CO Ltd
Current assignee: ZHEJIANG JILI SPEED VARIATOR CO Ltd
Priority date: 2006-05-15
Filing date: 2006-05-15
Publication date: 2007-05-02
Anticipated expiration: 2016-05-15

Abstract

The utility model relates to a connection device in the field of mechanical machining, in particular to a jointing structure of clutch body and shaft of a quad-speed variator of automobiles (; the structure is that the clutch body is provided on the core shaft, a fixed ring is provided on the core shaft and connects with a link ring on the clutch body, besides, some gears are provided on the fixed ring and a groove is provided on the link ring; the utility model has the characteristics of reasonable structure, good processability, high product qualification ratio, low cost, long service life, excellent durability, convenient usage and high machining efficiency, etc.

Description

The combining mechanism of clutch body and axle

Technical field

The utility model relates to a kind of connection set of field of machining, especially relates to a kind of clutch body of automobile four-speed gear box and the combining mechanism of axle.

Background technique

At present, the clutch body of traditional automobile four-speed gear box is a welding technique with the technology of the combining mechanism employing of axle, need in inert atmosphere, carry out during welding, the welding procedure complexity, requirement to manufacturing mechanism and producers is very high, for ensuring the quality of products, must strictly control inert atmosphere during welding, clutch body is very little with the joint of axle, the soldering point that causes is very little, the welding technique difficulty is big, producers are difficult to this technology on top of, because parts are force-transmitting members, the moment that is subjected to constantly changes, for weld seam very high requirement is arranged, difficult quality control, manufacturing efficiency is affected, owing to used comparatively complex apparatus and complicated production technology, make cost of production high, the connecting body of clutch body and mandrel is the strength member of clutch, influence for performance of clutch also is very big, clutch is widely used on the gear shift device, especially on automotive industry, use very big especially, so function admirable, low and the easy to process clutch of cost has unusual meaning for the development of Domestic Automotive Industry, high cost is in a disadvantageous position product in the industry of this high competition of automobile, the clutch of a heavy high quality and low cost is badly in need of inventing in China.As a kind of clutch body of the automotive transmission of applying for a patent abroad and the combining mechanism (as Fig. 1) of axle, its structure is for being on the mandrel 1 snap ring 3 to be arranged, and clutch body 2 is enclosed within on the snap ring, and clutch body is welded on the mandrel; The shortcoming of this connection set is a complex process, to the requirement height of equipment, workman's operating difficulties, inefficiency, cost of production height.

Summary of the invention

The utility model mainly is comparatively complicated at the existing in prior technology production technology, quality requirement height to steel, mould and manufacturing mechanism are had relatively high expectations, the technical problem of cost costliness etc., provide a kind of low to the manufacturing mechanism requirement, manufacturing condition simply is easy to hold, and product is easy to processing, up-to-standard rate height, the mandrel that real cost of production is low and the connection set of clutch body.

Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: mandrel is provided with clutch body, and mandrel is provided with retaining ring, and the connecting ring on retaining ring outer rim and the clutch body is combined closely and is integral; Retaining ring can closely be connected by variety of way with connecting ring, can work in coordination by tooth and groove, also can connect by key.

As preferably, the connecting ring on described retaining ring and the clutch body be connected to interference fit; Connecting ring and retaining ring surface of contact are annulus, and the processing method of interference fit is heat treatment.

As preferably, described mandrel retaining ring outer rim has tooth, on the clutch body connecting ring inner edge groove is arranged, retaining ring and connecting ring by tooth and groove in conjunction with being connected; Tooth and groove can be combined closely.

As preferably, the tooth on the described mandrel retaining ring is an involute splines, and the groove of clutch body connecting ring is a spline; The cooperation of involute splines is the most desirable cooperation.

As preferably, described mandrel and retaining ring are integrally manufactured; For adding hard intensity, the convenient manufacturing adopts integrally manufactured mode the most reliable.

As preferably, described clutch body axially is a peviform, and mandrel retaining ring and clutch body connecting ring are formed a bulge loop. As preferably, described clutch body axially is a peviform, and mandrel retaining ring and clutch body connecting ring are formed a bulge loop; From section, what mandrel retaining ring and clutch body connecting ring were formed is a protruding inwards boss, both can economical with materials, and the moment of bearing is increased.

As preferably, the ratio of described clutch body stage casing thickness and connecting ring thickness is 1: 1.2 to 1: 2.5, the section central lines of mandrel retaining ring and clutch body connecting ring; Be to become a firm integral body, reduce the influence that is subjected to external force for after making the mandrel retaining ring and the clutch body connecting ring being connected.

As preferably, the retaining ring on the described mandrel is identical with clutch body connecting ring thickness; Be to become a firm integral body for after making the mandrel retaining ring and the clutch body connecting ring being connected.

As preferably, the ratio of described axle diameter and retaining ring external diameter is 1: 1.5 to 1: 3; The diameter ratio of mandrel and retaining ring rationally can increase mechanism's integral intensity.

As preferably, described spline tooth number is 20 to 40; The number of teeth is many can effectively disperse force bearing point, but is unfavorable for processing too much, so 20 to 40 the most suitable.

Therefore, the utlity model has rational in infrastructurely, processibility is good, the product percent of pass height, and cost is low, and long service life is not fragile, especially is easy to use, the work efficiency height.

Description of drawings

Fig. 1 is a kind of axial cross-sectional schematic of prior art connecting body.

Fig. 2 is a kind of axial cross-sectional schematic of the utility model connecting body.

Embodiment

Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment 1: present embodiment is a kind of parts that are used for automobile clutch, one section forged steel is processed into mandrel 1, by machining, one section cylindrical forged steel can be processed into channel-type clutch body 2, on mandrel, process a retaining ring 3, on clutch body, process a connecting ring 4, because adding man-hour, the slightly larger in diameter of the spline 5 on the mandrel is in keyway 6 diameters of clutch body, do like this is for a magnitude of interference is arranged, make mandrel can with firm fixing of clutch body, the spline that mandrel is provided with above is in order to increase the size of driving force, be not easy to lose efficacy, with respect to common shaft hole mode interference fit, the performance of spline fitted has improved a lot, but the moment of transmission is also many greatly, when assembling, adopt temperature differential method to cooperate, clutch body is heated to about 180 ℃, at this moment after being heated because of clutch body, spline will swell, so just the mandrel that has spline can be matched with it, by scientific experiment, the degrees of expansion of spline is in the regime of elastic deformation of material, can not produce the problem that stress is concentrated, and again the connecting body of working good is put into air and cools off, can finish assembling, clutch body reverse side indent is big than prior art indent degree, and it is stressed to the auxiliary section stress influence that the utility model has improved on the clutch body control volume, and this also is a bigger improvement.

During use, the connecting body and spacer shell, the friction parts that assemble are constituted clutch, with be equipped with the friction parts spacer shell on the hole be embedded on the control post of the clutch body on the connecting body, so just constituted a clutch, by mandrel transmission power, clutch body can be moved, by the control post with rub parts mutually about, carry out the operation of conversion gear.

Claims

1. combining mechanism that is used to connect clutch body (2) and mandrel (1), mandrel (1) is provided with clutch body (2), it is characterized in that mandrel (1) is provided with retaining ring (3), the connecting ring (4) on retaining ring (3) outer rim and the clutch body (2) is combined closely and is integral.

2. combining mechanism according to claim 1, it is characterized in that on described retaining ring (3) and the clutch body (2) connecting ring (4) be connected to interference fit.

3. combining mechanism according to claim 2 is characterized in that described mandrel (1) retaining ring (3) outer rim has tooth, on clutch body (2) connecting ring (4) inner edge groove is arranged, and retaining ring (3) is connected with the combination of groove by tooth with connecting ring (4).

4. combining mechanism according to claim 2 is characterized in that the tooth on described mandrel (1) retaining ring (3) is involute splines (5), and the groove of clutch body (2) connecting ring (4) is spline (6).

5. according to claim 1 or 2 or 3 or 4 described combining mechanisms, it is characterized in that mandrel (1) and retaining ring (3) are integrally manufactured.

6. according to claim 1 or 2 or 3 or 4 described combining mechanisms, it is characterized in that described clutch body (2) axially is peviform, mandrel (1) retaining ring (3) is formed a bulge loop with clutch body (2) connecting ring (4).

7. combining mechanism according to claim 6, the ratio that it is characterized in that described clutch body (2) stage casing (h) thickness and connecting ring (4) thickness is 1: 1.2 to 1: 2.5, the section central lines of mandrel (1) retaining ring (3) and clutch body (2) connecting ring (4).

8. combining mechanism according to claim 6 is characterized in that the retaining ring (3) on the described mandrel (1) is identical with clutch body (2) connecting ring (4) thickness.

9. according to claim 1 or 2 or 3 or 4 described combining mechanisms, it is characterized in that the ratio of described mandrel (1) diameter and retaining ring (3) external diameter is 1: 1.5 to 1: 3.

10. according to claim 1 or 2 or 3 or 4 described combining mechanisms, it is characterized in that described involute splines (5) number of teeth is 20 to 40.