CN219035369U - Synchronizer gear hub capable of preventing gear from being shifted out - Google Patents

Abstract

The utility model relates to the technical field of synchronizer, and discloses an anti-gear-derailing synchronizer gear hub, which comprises: the synchronous gear hub is provided with inner concave surfaces in a front-back symmetrical manner, the synchronous gear hub array is provided with three slide block grooves, a synchronous slide block mechanism is slidably installed in the slide block grooves, the synchronous slide block mechanism comprises a slide block, spring clamping claw parts are symmetrically arranged at the front-back of the bottom of the slide block, and an annular spring is arranged between the spring clamping claw parts and the inner concave surfaces; according to the gear-shift-preventing synchronizer gear hub, the synchronous sliding block mechanism is arranged in the sliding block groove, and quick and stable gear shifting synchronous operation is realized in the synchronous sliding block mechanism through the sliding block and the primary synchronous component capable of sliding inside.

Description

Synchronizer gear hub capable of preventing gear from being shifted out

Technical Field

The utility model belongs to the technical field of synchronizers, and particularly relates to an anti-gear-derailing synchronizer hub.

Background

The synchronizer gear hub is a gear shifting functional structural member used in a motor vehicle transmission, the motor vehicle gear shifting is safer and more stable through continuous optimization of the synchronizer, the sliding blocks in the sliding block grooves of the synchronizer gear hub are driven to push out and slide through controlling the sliding of the joint sleeve in the existing synchronizer, the synchronous ring is further extruded to form a damping effect, so that synchronous butt joint operation is gradually carried out, gear shifting is completed, the problem that the gear shifting is unsmooth and even out of gear due to the fact that the joint sleeve slides into a relatively fast gear to collide is caused due to the fact that the butt joint synchronous speed is limited in the actual use process can occur, and therefore it is important to improve the gear shifting smoothness degree by improving the butt joint synchronous speed, and to prevent the gear out from being out of gear to improve the performance of the synchronizer.

Accordingly, in view of the above, research and improvement are made to the existing structure and the existing defects, and an anti-gear-derailing synchronizer hub is provided, so as to achieve the purpose of more practical value.

Disclosure of Invention

The present utility model provides an anti-gear-slip synchronizer hub for overcoming the above-mentioned drawbacks of the prior art.

The utility model discloses a gear-derailing prevention synchronizer gear hub, which is characterized by comprising the following specific technical means:

an anti-derailment synchronizer hub, comprising: synchronous tooth hub, synchronous tooth hub front and back symmetry is equipped with interior concave surface, synchronous tooth hub array is provided with three slider groove, sliding fit has synchronous slider mechanism in the slider groove, synchronous slider mechanism includes the slider, the symmetry is equipped with spring pawl portion around the slider bottom, spring pawl portion with be provided with annular spring between the interior concave surface, the slider upside is equipped with the transmission bellying, be equipped with primary synchronization inside groove in the slider, sliding fit has primary synchronization subassembly in the primary synchronization inside groove, primary synchronization subassembly includes embedded slider, embedded slider upside is equipped with the engaging protrusion, primary synchronization inside groove bilateral symmetry array is equipped with embedded logical groove, embedded slider bilateral symmetry array is equipped with primary synchronization slide bar, primary synchronization slide bar slide set up in the embedded logical inslot.

According to a further technical scheme, a reset spring is arranged on the side wall of the embedded sliding block, and the tail end of the reset spring is propped against the side wall of the primary synchronous inner groove.

According to a further technical scheme, two groups of spring clamping rings are symmetrically arranged on the outer wall of the embedded sliding block, and the reset springs are fixedly arranged on the spring clamping rings.

Further technical scheme, slider both sides outer wall is equipped with laminating line portion, just synchronous slide bar end is equipped with damping contact portion.

Further technical scheme, damping contact portion with laminating line portion can set up to the line that the direction is different.

According to a further technical scheme, the top of the joint protrusion body is slightly higher than the top wall of the transmission protrusion body, and the top of the joint protrusion body is provided with a joint damping part.

According to a further technical scheme, the spring clamping claw portion is provided with an anti-falling inner concave portion, and the anti-falling inner concave portion is arranged at the outer clamping position of the annular spring.

According to a further technical scheme, the section size of the primary synchronous sliding rod is consistent with that of the embedded through groove.

Compared with the prior art, the utility model has the following beneficial effects:

according to the gear-shifting-preventing synchronizer hub, the synchronous slide block mechanism is arranged in the slide block groove, quick and stable gear shifting synchronous operation is realized through the slide block and the internal slidable primary synchronous component in the synchronous slide block mechanism, in the gear shifting process, the sliding following structure is arranged at the top of the embedded slide block, so that the primary synchronous component is driven to slide firstly in the sliding process of the synchronous joint sleeve, the embedded slide block pushes the primary synchronous slide rod to extend out of the side wall of the slide block to abut against the synchronous ring, the synchronous ring is enabled to obtain a certain pushing force and a certain rotating speed in advance under a certain damping extrusion force before being pushed by the slide block, the internal groove of the joint sleeve pushes the transmission protruding part structure to enable the slide block to approach the synchronous ring and finally press and attach to the synchronous ring, and the speed change in the synchronous butt joint process is stable instead of directly colliding with a larger speed difference by matching the primary synchronous component structure in the slide block, so that the problem of the gear shifting is easy to cause the problem of the feeling of a pause and even shifting is solved;

according to the utility model, the primary synchronization component structure is arranged in the sliding block, the primary synchronization effect is achieved by firstly realizing the contact with the synchronization ring through the three groups of primary synchronization sliding rods in the gear shifting process, and a certain speed and pushing force are provided for the synchronization ring, so that the speed obtained by the synchronization ring in the process of integrally attaching the sliding block to the synchronization ring in the follow-up continuous pushing process is gradually increased until the attachment reaches the speed synchronization, and the safe service life of the gear shifting component is further prolonged while the gear shifting synchronization process is very stable and smooth and the abrasion of the gear shifting component is minimized due to small speed difference in the synchronous docking process.

Drawings

Fig. 1 is a schematic elevational view of the present utility model.

Fig. 2 is a schematic diagram of a synchronous slide mechanism 20 according to the present utility model.

Fig. 3 is a schematic side sectional view of the synchronous slide mechanism 20 according to the present utility model.

Fig. 4 is a schematic top view of the primary synchronization assembly 30 of the present utility model.

Fig. 5 is an enlarged schematic view of the structure at a in fig. 3.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

as shown in fig. 1 to 5:

the utility model provides an anti-gear-off synchronizer gear hub.

Referring to fig. 1 to 5, comprising: the synchronous gear hub 11, synchronous gear hub 11 fore-and-aft symmetry is equipped with interior concave surface 14, synchronous gear hub 11 array is provided with three slider groove 16, sliding fit has synchronous slider mechanism 20 in slider groove 16, synchronous slider mechanism 20 includes slider 21, slider 21 bottom front-and-back symmetry is equipped with spring clamping portion 25, be provided with annular spring 15 between spring clamping portion 25 and the interior concave surface 14, slider 21 upside is equipped with transmission bellying 26, be equipped with primary synchronization inside groove 27 in the slider 21, sliding fit has primary synchronization subassembly 30 in primary synchronization inside groove 27, primary synchronization subassembly 30 includes embedded slider 31, embedded slider 31 upside is equipped with joint protrusion 32, primary synchronization inside groove 27 both sides symmetry array is equipped with embedded through groove 22, embedded slider 31 bilateral symmetry array is equipped with primary synchronization slide bar 23, primary synchronization slide bar 23 sliding set up in embedded through groove 22.

Preferably, referring to fig. 3 to 5, the side wall of the embedded slider 31 is provided with a return spring 35, and the end of the return spring 35 abuts against the side wall of the primary synchronization inner groove 27.

The return springs 35 at both ends are used for keeping the embedded slide block 31 reset and are placed at the center of the primary synchronization inner groove 27.

Preferably, referring to fig. 3 to 5, two groups of spring snap rings 34 are symmetrically arranged on the outer wall of the embedded slider 31, and a return spring 35 is fixedly arranged on the spring snap rings 34.

Preferably, referring to fig. 2 and 3, the outer walls of the two sides of the slider 21 are provided with a lamination line portion 29, and the end of the primary synchronization slide bar 23 is provided with a damping contact portion 24.

The damping is improved by the damping contact part 24 and the lamination line part 29, so that the pushing action on the synchronizing ring is realized, and the synchronizing effect is accelerated.

Preferably, referring to fig. 2 and 3, the damping contact portion 24 and the attaching grain portion 29 may be provided as grains having different directions.

Realize the synchronous effect of damping through setting up different lines and provide the damping dynamics more stable when the simultaneous action.

Preferably, referring to fig. 2 and 3, the top of the engaging protrusion 32 is slightly higher than the top wall of the driving protrusion 26, and the engaging protrusion 32 is provided with an engaging damper 33.

Damping is achieved through the joint damping part 33 and the joint sleeve is provided, so that the joint sleeve slides to push the primary synchronization slide rod 23 to slide out of the external primary synchronization assembly 30, and the primary synchronization effect is achieved by abutting the synchronization ring.

Preferably, referring to fig. 1 to 3, the spring locking claw portion 25 is provided with a drop-preventing concave portion 28, and the drop-preventing concave portion 28 is provided at an outer locking position of the ring spring 15.

Preferably, referring to fig. 1-3, the primary synchronization slide bar 30 has a cross-sectional dimension that corresponds to the embedded through slot 22.

The stability and the supporting strength of the primary synchronous slide bar 30 are improved, and the side wall of the slide block 21 forms a complete surface after pushing and combining.

The working principle of the utility model is as follows:

three groups of sliding blocks are arranged on the outer side of a gear hub of a conventional synchronizer, the sliding blocks are controlled to outwards slide through a joint sleeve to prop against a synchronizing ring, so that the synchronizing ring is used as an intermediate layer under the extrusion effect, the synchronizer gradually drives a gear set to rotate, the inner teeth of the joint sleeve are combined with a gear under the further sliding effect, so that the synchronization effect is realized, the problem that gear shifting is obviously blocked even if the gear shifting is influenced by speed difference in the extrusion butt joint process of the sliding blocks and the synchronizing ring, gear shifting failure occurs rapidly due to the collision between teeth and the operation in the butt joint process is solved, an initial synchronizing assembly 30 is arranged in the sliding blocks 21 in a sliding manner through the arrangement of a synchronizing sliding block mechanism 20, the outer sliding of the joint sleeve is realized through the joint damping part 33 at the top of the joint protrusion 32 before the whole sliding blocks 21 are driven to outwards slide through the joint sleeve in the sliding process, the initial synchronizing sliding rod 23 is driven to outwards extend, so that the tail end of the primary synchronous slide bar 23 is abutted against the synchronous ring to realize primary synchronization firstly, the primary synchronous slide bar 23 is abutted against the synchronous ring in the process of further sliding of the joint sleeve, the transmission protruding part 26 is pushed to drive the slide block 21 to integrally slide towards the synchronous ring side in the process of further sliding of the joint sleeve, the primary synchronous slide bar 23 provides pressure to be gradually lifted, the side wall of the slide block 21 is gradually close to the synchronous ring, the synchronous extrusion force of the final slide block 21 and the synchronous ring abutted against the synchronous ring reaches the maximum, the rotating speed reaches stable synchronization and further sliding to enable inter-tooth meshing to complete gear shifting, the speed change in the synchronous butt joint process is stable instead of directly collision with larger speed difference to easily cause the problems of instant feeling and even gear shifting, meanwhile, the gear shifting experience is more smooth and the safety is stably improved without influencing the gear shifting operation and the gear shifting efficiency, the collision friction damage caused by the influence of the speed difference on the internal structure is reduced, and the service life is prolonged.

The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (8)

1. The utility model provides a synchronous ware tooth hub of anticreep shelves, includes synchronous tooth hub, synchronous tooth hub fore-and-aft symmetry is equipped with interior concave surface, synchronous tooth hub array is provided with three slider grooves, its characterized in that: the sliding block mechanism comprises a sliding block, spring clamping claw parts are symmetrically arranged on the front side and the rear side of the bottom of the sliding block, an annular spring is arranged between the spring clamping claw parts and the inner concave surface, a transmission protruding part is arranged on the upper side of the sliding block, a primary synchronous inner groove is arranged in the sliding block, a primary synchronous component is arranged in the primary synchronous inner groove in a sliding mode, the primary synchronous component comprises an embedded sliding block, a joint protruding body is arranged on the upper side of the embedded sliding block, an embedded through groove is formed in the symmetrical array on two sides of the primary synchronous inner groove, a primary synchronous sliding rod is arranged on the symmetrical array on two sides of the embedded sliding block, and the primary synchronous sliding rod is arranged in the embedded through groove in a sliding mode.

2. The anti-gear-out synchronizer hub according to claim 1, wherein: and the side wall of the embedded sliding block is provided with a reset spring, and the tail end of the reset spring is propped against the side wall of the primary synchronous inner groove.

3. An anti-gear-out synchronizer hub according to claim 2, wherein: two groups of spring clamping rings are symmetrically arranged on the outer wall of the embedded sliding block, and the reset springs are fixedly arranged on the spring clamping rings.

4. The anti-gear-out synchronizer hub according to claim 1, wherein: the outer walls of the two sides of the sliding block are provided with laminating grain parts, and the tail end of the primary synchronous sliding rod is provided with damping contact parts.

5. The anti-gear-out synchronizer hub according to claim 4, wherein: the damping contact portion and the lamination line portion may be set to lines different in direction.

6. The anti-gear-out synchronizer hub according to claim 1, wherein: the top of the joint protruding body is slightly higher than the top wall of the transmission protruding part, and the top of the joint protruding body is provided with a joint damping part.

7. The anti-gear-out synchronizer hub according to claim 1, wherein: the spring clamping claw part is provided with an anti-falling inner concave part, and the anti-falling inner concave part is arranged at the outer clamping position of the annular spring.

8. The anti-gear-out synchronizer hub according to claim 1, wherein: the section size of the primary synchronous sliding rod is consistent with that of the embedded through groove.

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