CN200968391Y - Mechanical type reverse gear device for automobile speed variator - Google Patents

Abstract

The utility model relates to a mechanical transmission reverse shift synchronizer for automobiles, and in detail is the mechanical transmission reverse shift synchronizer used in the Minyi microbus and other automobiles of its kind. The synchronizer is characterized in that a gear ring (1) slide-contacts with a hub (2); a sliding block slide-contacts with the gear ring (1) and the hub; a spring clip (4) is pressed tightly and connected with the sliding block (3). A neutral gear (5) does not contact with the gear ring (1); a synchronous spline (5a) is hung with a reverse shift gear (5) and is connected with a spline of the gear ring (1).

Description

Car Speed Change Gear Mechanical Backgear

Technical field: the utility model relates to a kind of automobile mechanical transmission reverse gear synchronizer, is specially the will of the people mini van and the similar automobile-used Car Speed Change Gear Mechanical Backgear of present employing mechanical transmission reverse gear synchronizer.

Background technique: at present, what will of the people mini van adopted is a kind of mechanical transmission with the reverse gear synchronizer mechanisms, comprises casing, input shaft, output shaft, jack shaft, several gear pairs, synchronizer and release bearing operating mechanism.Input shaft carries out the power input; The gear that several can pivot is housed on the output shaft, exports as power.Needle bearing is equipped with on the top of output shaft, and needle bearing is packed in the input shaft stomidium, and input shaft and output shaft are on same axis but be not connected mutually.The axis of jack shaft and the parallel axes of input and output shaft.The many employings of casing divide box up and down.The reducing sleeve tooth of synchronizer is contained between output shaft two adjacent teeth wheel, the synchronizer external toothing under the shift fork effect, can with the synchronous gear ring of adjacent gear in conjunction with, separate.Be provided with 5 forward gearss and a reverse gear, forward gears all has synchronous external toothing, and reverse gear does not have synchronous external toothing.The working principle of this synchronizer shift operating mechanism is an engage a gear when utilizing combined inertia to prevent synchronously.Being synchronized with the movement of it is that gear shifting handle from the car is through gear shift lacing wire, gear shift chosen axis assembly, declutch shift shaft assembly, gear ring, pass to synchronizing ring again.Such synchronizer makes the synchromesh gear shift accurate by elements such as friction element, locking element and elastic elements, and is stable and reliable for performance, is applied in to breathe out to fly in the gearshift mechanism of will of the people car.But in these all gearshift mechanisms, one, all there are two synchronous external toothings in the synchronizer shift mechanism of second gear and three, fourth gear, and fall, just near five grades of driven gear places a synchronous external toothing arranged in the five gear shift mechanisms.Like this, when changing five grades, reducing sleeve cingulum movable slider promotes synchronous external toothing and guarantees not have the engage a gear of impact by finishing a series of action mutually with the conical surface of five grades of driven gears; And when changing reverse gear, because the reverse gear side does not have synchronous external toothing, the reverse gear driven gear is in the outside of reducing sleeve tooth, and slide block is moved axially easy generation and comes off by the reducing sleeve cingulum is moving, breaks down when causing changing reverse gear.

Summary of the invention: the purpose of this utility model is to provide a kind of Car Speed Change Gear Mechanical Backgear simple in structure, with low cost, easy for operation.The purpose of this utility model is achieved in that it comprises gear ring (1), reducing sleeve tooth (2), slide block (3), spring collar (4), reverse gear (5).Described gear ring (1) coaxial line is assemblied in the outside of reducing sleeve tooth (2), slide block (3) is arranged in the groove (2a) between gear ring (1) and the reducing sleeve tooth (2), spring collar (4) is pressed on the inner plane place of three slide blocks (3), and reverse gear (5) is arranged in the outside of reducing sleeve tooth (2).The utility model has the advantages that: simple in structure, with low cost, easy for operation; By improving the structure of reverse gear, slide block contacts with the boss (5b) of gear when making the extension reverse gear, can not come off, and guarantees the synchronizer key stable operation; Boss of reverse gear (5b) and slide block friction play certain synchronous effect, improve synchronous efficiency, shorten lock in time.

Description of drawings: Fig. 1 is the structural principle of falling the Five-gear synchronizer schematic representation of existing will of the people car speed changer; Fig. 2 is an assembly structure principle schematic of the present utility model; Fig. 3 is a reverse gear structural representation of the present utility model.The 5a-gear spline.

Embodiment: described gear ring coaxial line is assemblied in the outside of reducing sleeve tooth, and slide block is arranged in the groove between gear ring and the reducing sleeve tooth, and spring collar is pressed on the inner plane place of three slide blocks, and reverse gear is arranged in the outside of reducing sleeve tooth.The reducing sleeve tooth is fixed on the axle by spline, and gear ring rotates synchronously by spline and reducing sleeve tooth.The utility model working procedure: the gear shifting handle on the car links to each other with the synchronizer external toothing by gear shift lacing wire, gear shift chosen axis assembly, declutch shift shaft assembly, when gear shifting handle is applied berth-changing strength, by gear shift lacing wire, gear shift chosen axis assembly, declutch shift shaft assembly the synchronizer external toothing is moved forward, gear ring promotes slide block by the spline tooth groove of internal spline, gear ring continues to move forward and the gear spline engagement, finishes engage a gear.Slide block contacts with the boss of gear when making the extension reverse gear, can not come off, and guarantees the synchronizer key stable operation; Certain synchronous effect has been played in the boss of reverse gear and slide block friction.

Claims (1)

1, a kind of Car Speed Change Gear Mechanical Backgear, it is made up of gear ring (1), reducing sleeve tooth (2), slide block (3), spring collar (4), reverse gear (5), it is characterized in that: described gear ring (1) coaxial line is assemblied in the outside of reducing sleeve tooth (2), slide block (3) is arranged in the groove (2a) between gear ring (1) and the reducing sleeve tooth (2), spring collar (4) is pressed on the inner plane place of three slide blocks (3), and reverse gear (5) is arranged in the outside of reducing sleeve tooth (2).

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