CN203297408U - Synchronizer structure capable of preventing secondary impact during gear shifting - Google Patents

Abstract

The utility model belongs to the field of automobile transmissions, in particular to a synchronizer structure capable of preventing secondary impact during gear shifting. The synchronizer structure comprises a gear seat, a synchronous ring, a spring, a slide block, a gear sleeve, a connecting gear and a gear, wherein the gear seat is fixedly connected to a transmission shaft through an inner spline, the gear sleeve is arranged on the gear seat and can slide freely on the gear seat leftward and rightward, the slide block is arranged between the gear seat and the gear sleeve, the slide block can be driven by the gear sleeve to move in the axial direction, and the connecting gear rotates along with the gear. The synchronizer structure is characterized in that the gear sleeve is provided with locking teeth, the locking teeth are contacted with corresponding synchronous ring locking teeth and are locked, the gear sleeve is additionally provided with alignment teeth, the sharp corner degree of each alignment tooth is smaller than that of the locking tooth, the size of the alignment tooth in the axial direction is thin and long, and gaps are formed at the corresponding positions of the synchronous ring. The synchronizer structure disclosed by the utility model is more reasonable in structure and smoother in gear shifting, the gear shifting handfeel of a driver is more comfortable, and the secondary impact in the gear shifting process is effectively prevented.

Description

A kind of synchronizer structure of the secondary pulse that prevents from shifting gears

Technical field

The utility model belongs to the automotive transmission class, specifically a kind of synchronizer structure of the secondary pulse that prevents from shifting gears.

Background technique

In mechanical type gear-driving speed-variable device shift process, synchronizer very universal.the synchronizer that present speed changer adopts is mostly to belong to inertial lock ring type synchronizer, although it is a variety of that their structural type has, but basic functional principle is all the same, two rotating components that are about to be meshed carry out synchronously, make it rotating speed and reach consistent, need simultaneously to guarantee before synchronous, the moment of inertia of utilizing its friction pair to produce stops their asynchronous engagement, realize locking, only engagement and engaged gear rotational speed reach consistent after tooth overlap and could continue movement, and complete shift process with the engagement of gear engagement tooth, and due to structural reason, lock ring synchronizer used all has the following disadvantages at present: namely prepare two movement parts of engagement after reaching synchronously, locking is removed, tooth cover continue reach and with the process of gear engagement tooth engagement in, will inevitably produce obstruction, form secondary pulse, cause driver's feel of shifting gears uncomfortable.

Summary of the invention

The purpose of this utility model is for the deficiencies in the prior art, provide a kind of more reasonable structure, gearshift more steadily, driver's shift gears synchronizer structure of secondary pulse of more comfortable the preventing of feel of shifting gears.

The utility model is achieved through the following technical solutions:

the utility model is a kind of prevent from the shifting gears synchronizer structure of secondary pulse, by toothholder, synchronizing ring, spring, slide block, the tooth cover, soldered tooth and gear form, toothholder is fixedly connected on transmission shaft by internal spline, tooth is sleeved on toothholder and can on toothholder, be free to slide left and right, slide block is contained between toothholder and tooth cover, can drive it by the tooth cover moves axially, soldered tooth rotates with gear, it is characterized in that: tooth puts with the locking tooth, the locking tooth touches and locking with corresponding synchronizing ring locking toe joint, tooth puts and separately is provided with the centering tooth, the degree of falling the wedge angle of centering tooth is less than locking tooth, axial dimension is elongated, the synchronizing ring corresponding position is jagged, the centering tooth has just been crossed synchronizing ring when the synchronizer locking.

when the utility model was worked at speed changer, two axles rotated, and toothholder and then two axles rotates together, and toothholder drives tooth cover, synchronizing ring, slide block and spring together with speed changer two axles rotations simultaneously, and soldered tooth rotates with gear, when speed changer conversion gear, this moment, the driver was mobile by promoting operating handle drive tooth cover, the tooth cover relies on spring action band movable slider to continue to move together, the slipper push synchronizing ring moves and contacts with the cone of friction on soldered tooth, owing between speed changer two axles and gear, having the relative angle speed difference, make two pairs of sliding friction conical surfaces in the Synchronizer Cone body structure start working and produce friction torque, effect due to friction torque, synchronizing ring has produced one, and the locking tooth that relatively rotates and tooth is put is tactile with corresponding synchronizing ring locking toe joint and its continuation of locking is mobile, at this moment, tooth puts the centering tooth and has crossed synchronizing ring, in advance close to soldered tooth, when its rotating speed reaches consistent, start synchronous, this moment, locking was removed, the tooth cover continues reach and completes shift process, the centering tooth that puts due to tooth the centering effect, while making tooth be enclosed within reach with the soldered tooth engagement, not there will be obstruction, also just avoided the secondary pulse in the shift process, the utility model more reasonable structure, shift gears more steady, driver's feel of shifting gears is more comfortable, effectively prevented the secondary pulse in the shift process.

The accompanying drawing explanation

Fig. 1 is the utility model structural representation.

Fig. 2 is lockup state schematic diagram in the utility model tooth cover moving process.

Fig. 3 is the utility model synchronizing ring breach schematic diagram.

Embodiment

as shown in Figure 1, the synchronizer structure of the described secondary pulse that prevents from shifting gears, mainly by toothholder 1, spring 2, slide block 3, tooth cover 4, synchronizing ring 5, soldered tooth 6, gear 7 forms, toothholder 1 is fixedly connected on transmission shaft by internal spline, tooth cover 4 is contained on toothholder 1 and can on toothholder 1, be free to slide left and right, slide block 3 is contained between toothholder 1 and tooth cover 4, it moves axially can to overlap 4 drives by tooth, 6 of soldered tooths rotate with gear 7, it is characterized in that: tooth overlaps on 4 with locking tooth 8, locking tooth 8 contacts and lockings with corresponding synchronizing ring locking tooth 9, on tooth cover 4, separately be provided with centering tooth 10, the degree of falling the wedge angle of centering tooth 10 is less than locking tooth 8, axial dimension is elongated, synchronizing ring 5 corresponding positions are jagged, centering tooth 10 has just been crossed synchronizing ring 5 when the synchronizer locking.

Three slide blocks 3 of the utility model are contained in three radial grooves of toothholder 1 and by spring 2 location of floating, synchronizing ring 5 is by projection and toothholder 1 floating connection, and slide block 3 stretches in three grooves of synchronizing ring, and soldered tooth 6 is fixedly connected with gear 7.like this when speed changer moves, tooth cover 4 is driven and then two axles by toothholder 1 and rotates together, tooth cover 4 drives synchronizing ring 5 simultaneously, spring 2, slide block 3 rotates with speed changer two axles together, when speed changer conversion gear, this moment, the driver moved by promoting operating handle drive tooth cover 4, tooth cover 4 band movable sliders 3 continue to move together, slide block 3 promotes synchronizing ring 5 and moves and contact with the cone of friction on soldered tooth 6, owing between speed changer two axles and gear, having the relative angle speed difference, make two pairs of sliding friction conical surfaces in the Synchronizer Cone body structure start working and produce friction torque, effect due to friction torque, synchronizing ring 5 has produced one and has relatively rotated, locking tooth 8 on tooth cover 4 is contacted and the mobile (see figure 2) of its continuation of locking with corresponding synchronizing ring locking tooth 9, as shown in Figure 3, the centering tooth 10 that tooth puts trisection matches with the trisection breach 11 on synchronizing ring 5, at this moment, on tooth cover 4,10, the centering tooth of trisection has been shown in Fig. 3 by the trisection breach 11(on synchronizing ring 5) cross synchronizing ring 5, in advance close to soldered tooth 6, locking is removed when it is synchronous, tooth cover 4 continues reach and completes shift process, centering effect due to the centering tooth 10 on tooth cover 4, make tooth cover 4 smooth and easy in reach and soldered tooth 6 engagement processes, can not produce the secondary pulse in shift process.

Claims (2)

1. the synchronizer structure of the secondary pulse that prevents from shifting gears, by toothholder, synchronizing ring, spring, slide block, the tooth cover, soldered tooth and gear form, toothholder is fixedly connected on transmission shaft by internal spline, tooth is sleeved on toothholder and can on toothholder, be free to slide left and right, slide block is contained between toothholder and tooth cover, can drive it by the tooth cover moves axially, soldered tooth rotates with gear, it is characterized in that: tooth puts with the locking tooth, the locking toe joint that the locking tooth is corresponding with synchronizing ring touches and locking, tooth puts and separately is provided with the centering tooth, its degree of falling the wedge angle is less than locking tooth, axial dimension is elongated, the synchronizing ring corresponding position is jagged.

2. the synchronizer structure of the secondary pulse that prevents from shifting gears according to claim 1, it is characterized in that: the centering tooth that tooth puts trisection matches with the trisection breach on synchronizing ring.

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