CN211693489U - Novel synchronizer presynchronization mechanism - Google Patents
Novel synchronizer presynchronization mechanism Download PDFInfo
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- CN211693489U CN211693489U CN202020189122.0U CN202020189122U CN211693489U CN 211693489 U CN211693489 U CN 211693489U CN 202020189122 U CN202020189122 U CN 202020189122U CN 211693489 U CN211693489 U CN 211693489U
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Abstract
The utility model discloses a novel synchronizer presynchronization mechanism belongs to motor transmission technical field, include: the two sides of the gear hub are respectively and coaxially provided with a synchronous ring, the synchronous rings rotate along with the gear hub, and the outer circle of each synchronous ring is provided with a slope boss; the combined gear ring is coaxially arranged on two sides of the gear hub, and the synchronous ring is in conical surface fit connection with the combined gear ring; the sliding gear sleeve is sleeved on the outer circle of the gear hub and is meshed with the gear hub, and the sliding gear sleeve can reciprocate on the gear hub along the axial direction of the gear hub; and the steel ball is positioned in the sliding gear sleeve, the sliding gear sleeve is provided with a guide hole for accommodating the steel ball, and the steel ball is abutted against the slope boss in the guide hole. The utility model discloses a remove about promoting the slip tooth cover, when the slope boss contact on steel ball and the synchronizing ring, and then promote the synchronizing ring and remove, make the synchronizing ring compress tightly with combining the ring gear, accomplish synchronous work in advance, this mechanism simple structure, spare part can be used to the synchronizer that receives the no tooth seat structure of space restriction less.
Description
Technical Field
The utility model relates to an automotive transmission technical field specifically is a novel synchronizer presynchronization mechanism.
Background
With the continuous development of automobile manufacturing technology, people pursue comfort, stability and convenience of automobile operation more and more, and automobiles need frequent gear shifting operation in the driving process, so the comfort of gear shifting directly influences the comfort of the whole automobiles, which puts forward higher requirements on the speed changer of the automobiles, and the synchronizer is used as a main component of the speed changer, and the performance of the synchronizer has great influence on the speed changer.
The synchronizer utilizes the friction principle, so that the rotating part on one side of the synchronizer can be synchronously jointed with the rotating part on the other side, the gear meshing is not impacted, and the gear shifting is stably and rapidly realized, so that the noise can be eliminated, the impact loss can be weakened or avoided, the service life of parts is prolonged, the comfort and the stability of an automobile can be improved, and the cost is reduced.
Chinese patent CN204164210U discloses a unilateral synchronizer assembly of single ring structure, as shown in fig. 1, sliding sleeve 2 of establishing including toothholder 1 and its outside cover, a plurality of spline grooves 11 have evenly been seted up on the outer periphery of toothholder 1, the bottom of spline groove 11 and the one end fixed connection of spring 3, the other end of spring 3 passes through the inner peripheral face block of support post 31 with sliding sleeve 2, first ring channel 12 and second ring channel 13 have been seted up respectively to the left and right sides of toothholder 1, be provided with synchronizer ring 4 in the first ring channel 12, nearly toothholder 1 outer periphery's cell wall bottom has been seted up in the second ring channel 13 and has been held annular 14, be provided with rather than chucking complex snap ring 5 in the snap ring channel 14, spring 3 and support post 31 all set up between synchronizer ring 4 and snap ring 5.
The single-side synchronizer assembly with the single clamping ring structure generally has 4 groups of combinations of the support columns and the springs, and is large in quantity and high in cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the synchronizer assembly of the combination of support post and spring among the above-mentioned background art, the support post and the spring of synchronizer assembly are more, the cost is higher not enough, provide a novel synchronizer presynchronization mechanism.
The utility model provides a novel synchronizer is lazytongs in advance, include:
the synchronous ring rotates along with the gear hub, a slope boss is arranged on the outer circle of the synchronous ring, and a slope surface inclined to the top of the slope boss is arranged between the slope boss and the synchronous ring;
the combined gear rings are coaxially arranged on two sides of the gear hub, and the synchronous ring is in conical surface fit connection with the combined gear rings;
the sliding gear sleeve is sleeved on the outer circle of the gear hub and is meshed with the gear hub, and the sliding gear sleeve can reciprocate on the gear hub along the axial direction of the gear hub;
the steel ball is located in the sliding gear sleeve, a guide hole for containing the steel ball is formed in the sliding gear sleeve, and the steel ball is abutted to the slope boss in the guide hole.
The preferred scheme is as follows: and an elastic body for elastically supporting the steel ball to reciprocate along the radial direction of the gear hub is arranged in the guide hole.
The preferred scheme is as follows: the steel ball, the guiding hole and the elastic body are all provided with a plurality of along the circumferential direction of the sliding gear sleeve, the positions of the slope bosses corresponding to the steel ball, the guiding hole and the elastic body are provided with a plurality of, and the slope bosses are arranged along the uniform distribution of the outer circle of the synchronizing ring.
The preferred scheme is as follows: the elastic body is a spring steel sheet or a compression spring.
The preferred scheme is as follows: one end of the spring steel sheet is fixedly connected with the sliding gear sleeve, the other end of the spring steel sheet is a free end, and the middle of the spring steel sheet is abutted to the steel ball.
The preferred scheme is as follows: the compression spring is located in the guide hole, one end of the compression spring is fixedly connected with the sliding gear sleeve, and one end of the compression spring is abutted to the steel ball.
The preferred scheme is as follows: the slope boss and the synchronizing ring are of an integrally formed structure made of rigid materials.
The preferred scheme is as follows: and an annular limiting rib is arranged on the inner wall of one end, close to the synchronizing ring, of the guide hole, and the inner diameter of the annular limiting rib is smaller than the diameter of the steel ball.
The preferred scheme is as follows: the outer circle of the sliding gear sleeve is provided with two annular flanges, the two annular flanges are parallel to each other along the axial direction of the sliding gear sleeve and are arranged at intervals, and the annular flanges and the sliding gear sleeve are of an integrally formed structure.
The preferred scheme is as follows: and the two sides of the sliding gear sleeve are respectively provided with an annular limiting flange, and the annular limiting flanges are used for controlling the stroke range of the sliding gear sleeve on the gear hub along the axial reciprocating motion of the gear hub.
On the basis of the above technical scheme, compare with prior art, the utility model has the advantages as follows:
the utility model discloses a novel synchronizer presynchronization mechanism, this mechanism are equipped with the slope boss at the excircle of synchronizing ring, are equipped with between slope boss and the synchronizing ring to the domatic of slope boss top slope, are equipped with the guiding hole that holds the steel ball on the slip tooth cover, and the steel ball offsets with the slope boss in the guiding hole. The sliding gear sleeve is pushed to move left and right, the sliding gear sleeve drives the steel ball to move left and right, and when the steel ball is in contact with a slope boss on the synchronizing ring, the synchronizing ring is further pushed to move, so that the synchronizing ring and the combined gear ring are tightly pressed, and the presynchronizing work is completed. The sliding gear sleeve continues to apply thrust, the elastic body is jacked up by the steel ball, the steel ball passes through the slope boss on the synchronizing ring, and the sliding gear sleeve is combined with the combined gear ring to finish gear shifting. The mechanism has simple structure and few parts, and can be used for synchronizers without tooth seat structures and limited by space on the premise of equivalent performance.
Drawings
FIG. 1 is a schematic diagram of a single-side synchronizer assembly with a single-snap ring structure according to the prior art;
fig. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the sliding gear sleeve, the steel ball and the elastic body according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a synchronizer ring according to an embodiment of the present invention.
Reference numerals: 100-gear hub, 200-synchronous ring, 201-slope boss, 300-sliding gear sleeve, 301-steel ball, 302-elastomer, 303-annular flange and 400-combined gear ring.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. It is to be noted that all the figures are exemplary representations. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
Example 1
Referring to fig. 2 to 4, an embodiment of the present invention provides a novel synchronizer pre-synchronization mechanism, including:
the gear hub 100 is provided with synchronizing rings 200 coaxially arranged on two sides of the gear hub 100 respectively, the synchronizing rings 200 rotate along with the gear hub 100, a slope boss 201 is arranged on the outer circle of the synchronizing ring 200, and a slope surface inclined to the top of the slope boss 201 is arranged between the slope boss 201 and the synchronizing ring 200.
The combined gear ring 400 is coaxially arranged at two sides of the gear hub 100, and the synchronous ring 200 is in conical surface fit connection with the combined gear ring 400; the gear hub 100 applies a right acting force to the synchronizer ring 200, and the conical surface matching structure of the synchronizer ring 200 and the engaging gear ring 400 generates a friction torque, so that the synchronizer ring 200 and the engaging gear ring 400 finally achieve synchronous rotation.
And the sliding gear sleeve 300 is sleeved on the outer circle of the gear hub 100, is meshed with the gear hub 100, synchronously rotates along with the gear hub 100 along with the sliding gear sleeve 300, and can make the sliding gear sleeve 300 linearly reciprocate on the gear hub 100 along the axial direction of the gear hub 100.
And a steel ball 301, wherein the steel ball 301 is positioned in the sliding gear sleeve 300, a guide hole for accommodating the steel ball 301 is formed in the sliding gear sleeve 300, and the steel ball 301 is abutted against the slope boss 201 of the synchronizing ring 200 in the guide hole.
Principle of operation
The utility model discloses a novel synchronizer presynchronization mechanism, this mechanism are equipped with slope boss 201 at the excircle of synchronizer ring 200, are equipped with between slope boss 201 and the synchronizer ring 200 to the domatic of slope boss 201 top slope. The ramp boss 201 and the synchronizing ring 200 are formed integrally by rigid materials. The sliding gear sleeve 300 is provided with a guide hole for accommodating the steel ball 301, and the steel ball 301 is abutted against the slope boss 201 in the guide hole.
When the gear is shifted, the sliding gear sleeve 300 can move leftwards or rightwards under the action of the external gear shifting force, and the sliding gear sleeve 300 drives the steel ball 301 to contact the slope boss 201 of the synchronizing ring 200. The sliding gear sleeve 300 and the steel ball 301 exert a right acting force on the synchronizing ring 200 together, so as to push the synchronizing ring 200 to move, so that the synchronizing ring 200 and the combining gear ring 400 are pressed tightly, and the conical surface matching structure of the synchronizing ring 200 and the combining gear ring 400 generates a friction torque, so that the synchronizing ring 200 and the combining gear ring 400 finally achieve synchronous rotation, and the presynchronization work is completed.
The sliding gear sleeve 300 drives the steel ball 301 to move leftwards or rightwards continuously, at the moment, the sliding gear sleeve 300 is meshed with the synchronous ring 200 through a spline, the sliding gear sleeve 300, the synchronous ring 200 and the combined gear ring 400 rotate synchronously, at the moment, the sliding gear sleeve 300 moves leftwards or rightwards continuously and is meshed with the combined gear ring 400 smoothly, and smooth gear engagement is achieved.
Example 2
Referring to fig. 2 to 4, an embodiment of the present invention provides a novel synchronizer pre-synchronization mechanism, and the embodiment is different from embodiment 1 in that: an elastic body 302 for elastically supporting a steel ball 301 to reciprocate in the radial direction of the hub gear 100 is provided in the guide hole of the sliding sleeve gear 300. When the elastic body 302 continues to apply thrust to the steel ball 301 by the sliding gear sleeve 300, the elastic body 302 is jacked up by the steel ball 302, the steel ball 302 passes over the slope boss 201 on the synchronizing ring 200, and the sliding gear sleeve 300 is combined with the combined gear ring 400 to complete smooth gear shifting.
The steel ball 301, the guide hole and the elastic body 302 are all three in the circumferential direction of the sliding gear sleeve 300, the positions of the slope bosses 201 corresponding to the steel ball 301, the guide hole and the elastic body 302 are three, and the three slope bosses 201 are arranged in a row along the excircle of the synchronizing ring 200.
Example 3
Referring to fig. 3, an embodiment of the present invention provides a novel synchronizer pre-synchronization mechanism, and the embodiment is different from embodiment 2 in that: the elastic body 302 is a spring steel sheet, one end of the spring steel sheet is fixedly connected with the sliding gear sleeve 300, the other end of the spring steel sheet is a free end, and the middle of the spring steel sheet is abutted to the steel ball 301. After the steel ball 301 moves to the set moving position and the gear is engaged, the steel ball 301 is jacked up by the slope bulge 201 of the synchronizing ring 200, the spring steel sheet is jacked up by the steel ball 301 to generate elastic deformation, the steel ball 301 is limited in the guide hole, the steel ball 301 is prevented from being separated from the guide hole, and a movement space is provided for the steel ball 301 in the guide hole.
Example 4
The embodiment of the utility model provides a novel synchronizer is lazytongs in advance, this embodiment lies in with embodiment 2's difference: the elastic body 302 is a compression spring, the compression spring is positioned in the guide hole, one end of the compression spring is fixedly connected with the sliding gear sleeve 300, and one end of the compression spring is abutted to the steel ball 301. After the steel ball 301 moves to the set moving position and the gear is engaged, the steel ball 301 is jacked up by the slope bulge 201 of the synchronizing ring 200, the compression spring is jacked up by the steel ball 301 to generate elastic deformation, the steel ball 301 is limited in the guide hole, the steel ball 301 is prevented from being separated from the guide hole, and a movement space is provided for the steel ball 301 in the guide hole.
Example 5
Referring to fig. 3, an embodiment of the present invention provides a novel synchronizer pre-synchronization mechanism, and the embodiment is different from embodiment 1 in that: an annular limiting rib is arranged on the inner wall of one end, close to the synchronizing ring 200, of the guide hole, the inner diameter of the annular limiting rib is smaller than the diameter of the steel ball 301, and the steel ball 301 is prevented from being separated from the guide hole.
Example 6
Referring to fig. 2, an embodiment of the present invention provides a novel synchronizer pre-synchronization mechanism, and the embodiment is different from embodiment 1 in that: the outer circle of the sliding gear sleeve 300 is provided with two annular flanges 303, the two annular flanges 303 are arranged in parallel and at intervals along the axial direction of the sliding gear sleeve, a guide groove for installing the pulling and inserting is formed between the two annular flanges 302, and the sliding gear sleeve 300 can be conveniently pulled and inserted to drive the sliding gear sleeve 300 to linearly reciprocate on the gear hub 100 along the axial direction of the gear hub 100. The annular flange 303 is integrally formed with the sliding sleeve gear 300.
And annular limiting flanges are respectively arranged on two sides of the sliding gear sleeve 300 and are used for controlling the stroke range of the sliding gear sleeve 300 on the gear hub 100 in the axial reciprocating motion along the gear hub 100, and after the sliding gear sleeve 300 reciprocates to a set position along the radial direction of the gear hub 100, the annular limiting flanges are abutted against other parts of the gearbox to complete positioning.
Various modifications and variations of the embodiments of the present invention may be made by those skilled in the art, and they are within the scope of the present invention provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. A novel synchronizer presynchronization mechanism is characterized by comprising:
the gear hub (100), the two sides of the gear hub (100) are respectively and coaxially provided with a synchronous ring (200), the synchronous ring (200) rotates along with the gear hub (100), the excircle of the synchronous ring (200) is provided with a slope boss (201), and a slope surface inclined to the top of the slope boss (201) is arranged between the slope boss (201) and the synchronous ring (200);
the combined gear ring (400), the combined gear ring (400) is coaxially arranged on two sides of the gear hub (100), and the synchronous ring (200) is in conical surface fit connection with the combined gear ring (400);
the sliding gear sleeve (300) is sleeved on the outer circle of the gear hub (100) and is meshed with the gear hub (100), and the sliding gear sleeve (300) can reciprocate on the gear hub (100) along the axial direction of the gear hub (100);
the steel ball (301), steel ball (301) are located slip tooth cover (300), be equipped with the guiding hole that holds steel ball (301) on slip tooth cover (300), steel ball (301) offset with slope boss (201) in the guiding hole.
2. The novel synchronizer presynchronization mechanism of claim 1, wherein:
and an elastic body (302) which elastically supports the steel ball (301) to reciprocate along the radial direction of the gear hub (100) is arranged in the guide hole.
3. The novel synchronizer presynchronization mechanism of claim 2, wherein:
the steel ball (301), the guiding hole and the elastic body (302) are all provided with a plurality of along the circumferential direction of the sliding gear sleeve (300), the positions of the slope bosses (201) corresponding to the steel ball (301), the guiding hole and the elastic body (302) are provided with a plurality of, and the plurality of slope bosses (201) are arranged along the outer circle of the synchronizing ring (200).
4. The novel synchronizer presynchronization mechanism of claim 2, wherein:
the elastic body (302) is a spring steel sheet or a compression spring.
5. The novel synchronizer presynchronization mechanism of claim 4, wherein:
one end of the spring steel sheet is fixedly connected with the sliding gear sleeve (300), the other end of the spring steel sheet is a free end, and the middle of the spring steel sheet is abutted against the steel ball (301).
6. The novel synchronizer presynchronization mechanism of claim 4, wherein:
the compression spring is positioned in the guide hole, one end of the compression spring is fixedly connected with the sliding gear sleeve (300), and one end of the compression spring is abutted against the steel ball (301).
7. The novel synchronizer presynchronization mechanism of claim 1, wherein:
the slope boss (201) and the synchronizing ring (200) are of a rigid material integrally formed structure.
8. The novel synchronizer presynchronization mechanism of claim 1, wherein:
and an annular limiting rib is arranged on the inner wall of one end, close to the synchronizing ring (200), of the guide hole, and the inner diameter of the annular limiting rib is smaller than the diameter of the steel ball (301).
9. The novel synchronizer presynchronization mechanism of claim 1, wherein:
be equipped with annular flange (303) on the excircle of slip tooth cover (300), annular flange (303) are equipped with two, and two annular flanges (303) are parallel to each other and the interval sets up along the axial direction of slip tooth cover (300), annular flange (303) and slip tooth cover (300) are integrated into one piece structure.
10. The novel synchronizer presynchronization mechanism of claim 1, wherein:
and two sides of the sliding gear sleeve (300) are respectively provided with an annular limiting flange, and the annular limiting flanges are used for controlling the stroke range of the sliding gear sleeve (300) on the gear hub (100) along the axial reciprocating motion of the gear hub (100).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020189122.0U CN211693489U (en) | 2020-02-20 | 2020-02-20 | Novel synchronizer presynchronization mechanism |
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| CN202020189122.0U CN211693489U (en) | 2020-02-20 | 2020-02-20 | Novel synchronizer presynchronization mechanism |
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| CN211693489U true CN211693489U (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895000A (en) * | 2020-06-29 | 2020-11-06 | 东风商用车有限公司 | Novel inertial synchronizer assembly |
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- 2020-02-20 CN CN202020189122.0U patent/CN211693489U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111895000A (en) * | 2020-06-29 | 2020-11-06 | 东风商用车有限公司 | Novel inertial synchronizer assembly |
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