CN107630945B - Synchronizer assembly - Google Patents
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- CN107630945B CN107630945B CN201710790858.6A CN201710790858A CN107630945B CN 107630945 B CN107630945 B CN 107630945B CN 201710790858 A CN201710790858 A CN 201710790858A CN 107630945 B CN107630945 B CN 107630945B
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Abstract
The utility model provides a synchronous ware assembly, including the tooth hub, the tooth hub both sides are equipped with a cone hub respectively, the cover is equipped with the slip facing on the tooth hub, the last ejector pad mounting groove of having seted up of tooth hub flank, the ejector pad subassembly is equipped with in the ejector pad mounting groove, be equipped with a synchronizer ring between ejector pad subassembly and the two cone hubs respectively, be equipped with first boss on the synchronizer ring, first boss cartridge is in the ejector pad mounting groove, still be equipped with two second bosses along the circumferencial direction on the synchronizer ring, second boss one end is equipped with the notch, the second boss other end is equipped with the extension spring hole, be equipped with the first logical groove that is used for holding the spring body on the flank of tooth hub, be equipped with the second logical groove that is used for holding the extension spring on the internal surface of slip facing, the spring body of extension spring is installed in the cavity that forms by first logical groove, second logical groove and notch, the spring hook of one end connects in the extension spring hole on one synchronizer ring, the hook of extension spring other end connects in the extension spring hole that corresponds on another synchronizer ring, the extension spring makes two synchronizer rings all compress tightly to the tooth hub direction. The method is suitable for synchronizers.
Description
Technical Field
The invention relates to the field of synchronizers, in particular to a synchronizer assembly.
Background
At present, the working principle of an automobile synchronizer is generally as follows: the sliding gear sleeve is meshed with the gear hub, the gear hub and the transmission shaft through splines, the gear is sleeved on the transmission shaft through a bearing, when gear shifting is needed, the gear shifting fork dials the sliding gear sleeve to the gear to be shifted, before the conical hub fixedly connected with the gear to be shifted is meshed with the sliding gear sleeve, the synchronous ring is combined with the conical hub, the rotating speeds of the gear hub and the conical hub are rapidly synchronized through friction between conical surfaces, namely, the sliding gear sleeve of the synchronizer is rapidly synchronized with the rotating speed of the gear to be shifted, the conical hub of the gear to be shifted is meshed with the sliding gear sleeve of the synchronizer, the gear shifting process is completed, and power is transmitted to the transmission shaft through the gear to be shifted, so that the automobile is driven to continue running.
In the existing synchronizer, a synchronizing ring is arranged between a cone hub and a gear hub, one side of the synchronizing ring is positioned by the conical surface of the cone hub, the other side of the synchronizing ring is positioned by the end surface of the gear hub, and the synchronizing ring can axially float. In neutral position, the synchronous ring and the cone hubs on two sides have speed difference; after one side gear is hung, the speed difference exists between the synchronizing ring on the other side and the conical hub on the other side, and due to the axial movement of the synchronizing ring, the conical surface of the synchronizing ring on the non-gear-engaged side can be contacted with the conical surface of the conical hub, so that the synchronizing ring on the non-gear-engaged side and the conical hub can generate certain friction torque, the whole drag torque of the gearbox can be improved, the transmission efficiency of the gearbox is reduced, and the service lives of the synchronizing ring and the conical hub can be shortened.
Disclosure of Invention
The present invention is directed to a synchronizer assembly that overcomes the above-mentioned shortcomings of the prior art.
In order to achieve the above purpose, the synchronizer assembly provided by the invention comprises a tooth hub, wherein two conical hubs are respectively arranged on two sides of the tooth hub, a sliding tooth sleeve is sleeved on the tooth surface of the tooth hub, a push block mounting groove is further formed in the tooth surface of the tooth hub, a push block assembly is arranged in the push block mounting groove, a push block meshing tooth matched with the inner surface of the sliding tooth sleeve is arranged on the outer surface of the push block assembly, the push block assembly is meshed with the sliding tooth sleeve through the push block meshing tooth, a synchronizing ring is respectively arranged between the push block assembly and the two conical hubs, a first boss is arranged at a position corresponding to the push block mounting groove, the first boss is clamped in the push block mounting groove, at least two second bosses are further arranged on the synchronizing ring along the circumferential direction, a notch for accommodating the end of a tension spring of the tooth hub, the other end of the second boss is provided with a pull spring engaging tooth for hanging the tension spring, the position corresponding to the tooth surface of the tension spring body of the tension spring hook is provided with a hook hole of the tension spring, and the second boss is correspondingly pressed into the hook groove of the synchronizing ring in the two side of the tooth sleeve, and the hook hole is correspondingly formed in the second boss is correspondingly provided with the second boss hole.
The two synchronizing rings are always pressed towards the gear hub through the added tension spring, so that the synchronizing rings cannot axially float, friction torque generated between the synchronizing rings and the cone hub at the non-gear side due to axial float of the synchronizing rings is avoided, the overall drag torque of the gearbox is reduced, the transmission efficiency of the gearbox is improved, and the service lives of the synchronizing rings and the cone hub are prolonged; meanwhile, after the synchronizing ring and the cone hub are worn for a period of time, the tension spring can automatically shorten due to the elasticity of the tension spring, so that the two synchronizing rings are continuously pressed towards the direction of the gear hub, the service life is further prolonged, and if the synchronizing ring is limited to axially float by adopting a part which is not automatically shortened, the synchronizing ring still can axially float after the synchronizing ring and the cone hub are worn for a period of time; moreover, through adding the second boss earlier, set up notch and extension spring hole on the second boss again, can improve the intensity of synchronizer ring like this to still further improved life.
In the above scheme, the second boss and the first boss are arranged in a staggered manner.
In the above aspect, the number of the second bosses is the same as the number of the first bosses, and the second bosses and the first bosses are alternately arranged in the circumferential direction of the synchronizing ring.
In the above scheme, a sinking groove is arranged on the synchronizing ring at a position corresponding to the tension spring hole. Through the design of the sinking groove at the position corresponding to the tension spring hole on the synchronizing ring, the outward leakage of the spring hook of the tension spring can be avoided, and the tension spring can be prevented from interfering with other parts.
In the above scheme, the push block assembly comprises a push block body with push block engagement teeth on the outer surface, a spring and a steel ball, wherein a mounting through hole for mounting the steel ball and the spring is formed in the push block body in a radial direction at a position between the two push block engagement teeth, the mounting through hole comprises a frustum section and a cylindrical section, the lower port of the cylindrical section is positioned on the bottom surface of the push block body, the upper port of the cylindrical section is communicated with the lower port of the frustum section, the upper port of the frustum section is positioned on the top surface of the push block body at a position between the two push block engagement teeth, the diameter of the upper port of the frustum section is smaller than the diameter of the lower port of the frustum section, the diameter of the lower port of the frustum section is the same as the diameter of the cylindrical section, the diameter of the cylindrical section is larger than the diameter of the steel ball, and the diameter of the steel ball is larger than the diameter of the upper port of the frustum section; the spring mounting seat is arranged on the bottom surface of the push block body and used for mounting the spring, the spring mounting seat is of a U-shaped structure, the top of the U-shaped structure is connected with the bottom surface of the push block body into a whole, a through hole is arranged at the position of the bottom of the U-shaped structure corresponding to the mounting through hole, a spring limiting clamping table used for mounting the spring is clamped in the through hole, the upper end of the spring is pressed into the mounting through hole by the steel ball, and the lower end of the spring is clamped on the spring limiting clamping table.
Through designing the installation through-hole into the sectional type structure that is formed by cone section and cylinder section concatenation to the diameter of the last port of cone section designs to be less than the diameter of steel ball, like this, the steel ball can not deviate from in the installation through-hole, simultaneously, through adding the spring mount pad of establishing U type structure on the bottom surface of ejector pad body, and pass through the spacing block cartridge of spring with the lower extreme of spring on the spring mount pad, can make this slider mechanism be monolithic structure like this, the problem of falling apart can not appear.
In the above scheme, the spacing clamping platform of spring includes spring joint portion, spring supporting part and installation card portion of going into, the lower extreme of spring joint portion with the upper end of spring supporting part links to each other, the lower extreme of spring supporting part with the upper end of installation card portion of going into links to each other, spring joint portion spring supporting part with installation card portion of going into is cylindrical structure, the external diameter of spring joint portion with the internal diameter of spring cooperatees, the external diameter of spring is less than the external diameter of spring supporting part, the external diameter of spring supporting part is greater than the diameter of through-hole, the diameter of through-hole with the external diameter of installation card portion of going into cooperatees, installation card portion of going into the cartridge is in the through-hole, the lower extreme cartridge of spring is in on the spring joint portion.
In the above scheme, a tool retracting groove is formed at a position where the lower end of the spring supporting part is connected with the upper end of the mounting clamping part. The added tool retracting groove is convenient for processing the spring limiting clamping table on one hand, and on the other hand, the spring supporting part can be ensured to be clamped on the bottom of the spring mounting seat smoothly.
In the above scheme, the lower end of the installation clamping portion is provided with a conical surface. The added conical surface facilitates the installation of the spring limit clamping table.
In the above scheme, the diameter of the cylindrical section is the same as the diameter of the through hole. Through designing the diameter of the cylindrical section to be the same as the diameter of the through hole, the through hole and the mounting through hole can be sequentially machined from bottom to top at one time, and therefore the production efficiency of the sliding block mechanism is improved.
In the above scheme, the distance D between the two radial boss sides of the first boss is smaller than the circumferential width H of the push block mounting groove, and the boss end surface of the first boss facing the gear hub abuts against the push block body. The boss end face, facing the gear hub, of the first boss is designed to be propped against the push block body, so that the first boss can play a clamping role and can play a limiting role of the push block body.
The technical scheme provided by the invention has the beneficial effects that:
1. the two synchronizing rings are always pressed towards the gear hub through the added tension spring, so that the synchronizing rings cannot axially float, friction torque generated between the synchronizing rings and the cone hub at the non-gear side due to axial float of the synchronizing rings is avoided, the overall drag torque of the gearbox is reduced, the transmission efficiency of the gearbox is improved, and the service lives of the synchronizing rings and the cone hub are prolonged;
2. when the synchronizing ring and the cone hub are worn for a period of time, the tension spring automatically shortens due to the elasticity of the tension spring, so that the two synchronizing rings are continuously pressed towards the direction of the gear hub, the service life is further prolonged, and when the synchronizing ring is limited to axially float by adopting a part which is not automatically shortened, the synchronizing ring still axially float after the synchronizing ring and the cone hub are worn for a period of time;
3. the second boss is additionally arranged firstly, and then the notch and the tension spring hole are formed in the second boss, so that the strength of the synchronizing ring can be improved, and the service life of the synchronizing ring is further prolonged;
4. the sinking groove is designed at the position of the synchronizing ring corresponding to the tension spring hole, so that the outward leakage of the spring hook of the tension spring can be avoided, and the tension spring can be prevented from interfering with other parts;
5. the mounting through hole is designed to be of a sectional structure formed by splicing the conical section and the cylindrical section, and the diameter of the upper port of the conical section is designed to be smaller than that of the steel ball, so that the steel ball cannot fall out of the mounting through hole;
6. the spring mounting seat with the U-shaped structure is additionally arranged on the bottom surface of the push block body, and the lower end of the spring is clamped on the spring mounting seat through the spring limiting clamping table, so that the sliding block mechanism is of an integral structure, and the problem of falling apart cannot occur;
7. the added tool retracting groove is convenient for processing the spring limiting clamping table on one hand, and on the other hand, the spring supporting part can be ensured to be clamped on the bottom of the spring mounting seat smoothly;
8. the added conical surface facilitates the installation of the spring limit clamping table;
9. the diameter of the cylindrical section is designed to be the same as that of the through hole, so that the through hole and the mounting through hole can be sequentially processed from bottom to top at one time, and the production efficiency of the sliding block mechanism is improved;
10. the boss end face, facing the gear hub, of the first boss is designed to be propped against the push block body, so that the first boss can play a clamping role and can play a limiting role of the push block body.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the explosive structure of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1 with the cone hub removed;
FIG. 4 is a schematic view of the structure of the hub;
FIG. 5 is a schematic view of a sliding sleeve;
FIG. 6 is a schematic diagram of a structure of a synchronizer ring;
FIG. 7 is a schematic view of another view structure of a synchronizer ring;
FIG. 8 is a schematic structural view of a pusher assembly;
FIG. 9 is a schematic diagram of the explosive structure of FIG. 8;
FIG. 10 is a schematic cross-sectional view of FIG. 8;
FIG. 11 is a schematic view of the push block body and spring mount of FIG. 10;
FIG. 12 is a schematic view of the enlarged partial structure of the portion A in FIG. 11;
fig. 13 is a schematic structural view of the spring limit clamping table.
In the figure: the gear hub 1, the push block mounting groove 1a, the first through groove 1b, the cone hub 2, the sliding gear sleeve 3, the second through groove 3a, the push block assembly 4, the push block meshing gear 4a, the push block body 4b, the spring 4c, the steel ball 4d, the mounting through hole 4e, the cone segment 4e1, the cylindrical segment 4e2, the spring mounting seat 4f, the through hole 4f1, the spring limit clamping table 4g, the spring clamping part 4g1, the spring supporting part 4g2, the mounting clamping part 4g3, the retracting groove 4g4, the conical surface 4g5, the synchronizing ring 5, the first boss 5a, the radial boss side surface 5a1, the boss end surface 5a2, the second boss 5b, the notch 5b1, the tension spring hole 5b2, the sinking groove 5c, the tension spring 6, the spring body 6a and the spring hook 6b.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, which should not be construed as limiting the invention.
Examples: the synchronizer assembly comprises a gear hub 1, wherein two sides of the gear hub 1 are respectively provided with a cone hub 2, the tooth surfaces of the gear hub 1 are sleeved with a sliding gear sleeve 3, the tooth surfaces of the gear hub 1 are also provided with a push block mounting groove 1a, a push block assembly 4 is arranged in the push block mounting groove 1a, the outer surface of the push block assembly 4 is provided with a push block meshing tooth 4a matched with the inner surface of the sliding gear sleeve 3, the push block assembly 4 is meshed with the sliding gear sleeve 3 through the push block meshing tooth 4a, a synchronizing ring 5 is respectively arranged between the push block assembly 4 and the two cone hubs 2, the position of the synchronizing ring 5 corresponding to the push block mounting groove 1a is provided with a first boss 5a, the first boss 5a is clamped in the push block mounting groove 1a, the synchronizing ring 5 is provided with at least two second bosses 5b along the circumferential direction, the second boss 5b is provided with a notch 5b1 for accommodating the end of the spring body 6a of the tension spring 6 towards one end of the gear hub 1, the other end of the second boss 5b is provided with a tension spring hole 5b2 for hooking the spring hook 6b of the tension spring 6, the position corresponding to the second boss 5b on the tooth surface of the gear hub 1 is provided with a first through groove 1b for accommodating the spring body 6a, the position corresponding to the second boss 5b on the inner surface of the sliding gear sleeve 3 is provided with a second through groove 3a for accommodating the tension spring 6, the spring body 6a of the tension spring 6 is arranged in a cavity formed by the first through groove 1b, the second through groove 3a and the notch 5b1, the spring hook 6b at one end of the tension spring 6 is hooked in the tension spring hole 5b2 on one tension spring 5, the spring hook 6b at the other end of the tension spring 6 is hooked in the corresponding tension spring hole 5b2 on the other tension spring 5, the tension springs 6 enable the two synchronizing rings 5 to be pressed towards the gear hub 1.
The two synchronizing rings 5 are always pressed towards the gear hub 1 through the added tension spring 6, so that the synchronizing rings 5 cannot axially float, friction moment generated between the synchronizing rings 5 on the non-engaged side and the cone hub 2 due to axial float of the synchronizing rings 5 is avoided, integral drag moment of the gearbox is reduced, transmission efficiency of the gearbox is improved, and service lives of the synchronizing rings 5 and the cone hub 2 are prolonged; meanwhile, after the synchronizing ring 5 and the cone hub 2 are worn for a period of time, the tension spring 6 automatically shortens due to the elasticity of the tension spring 6, so that the two synchronizing rings 5 are continuously pressed towards the gear hub 1, the service life is further prolonged, and if the synchronizing ring 5 is limited to axially float by adopting a part which is not automatically shortened, the synchronizing ring 5 still axially float after the synchronizing ring 5 and the cone hub 2 are worn for a period of time; in addition, the second boss 5b is additionally arranged, and then the notch 5b1 and the tension spring hole 5b2 are formed in the second boss 5b, so that the strength of the synchronizing ring 5 can be improved, and the service life of the synchronizing ring is further prolonged.
The second boss 5b and the first boss 5a are arranged in a staggered manner. The number of the second bosses 5b is the same as the number of the first bosses 5a, and the second bosses 5b and the first bosses 5a are alternately arranged in the circumferential direction of the synchronizing ring 5.
A sinking groove 5c is arranged on the synchronous ring 5 at a position corresponding to the tension spring hole 5b 2. Through designing the sinking groove 5c at the position corresponding to the tension spring hole 5b2 on the synchronizing ring 5, the outward leakage of the spring hook 6b of the tension spring 6 can be avoided, and the interference of the tension spring 6 and other parts can be prevented.
The above-mentioned pusher assembly 4 includes the pusher body 4b with pusher engagement teeth 4a on the outer surface, spring 4c and steel ball 4d, the position between two said pusher engagement teeth 4a of said pusher body 4b is offered the installation through hole 4e used for installing said steel ball 4d and said spring 4c along radial direction on said pusher body, the said installation through hole 4e includes the cone section 4e1 and cylindrical section 4e2, the lower port of the said cylindrical section 4e2 locates on the bottom surface of the said pusher body 4b, the upper port of the said cylindrical section 4e2 communicates with lower port of the said cone section 4e1, the upper port of the said cone section 4e1 locates on the said pusher body 4b top surface (i.e. outer surface) and corresponds to the position between two said pusher engagement teeth 4a, the diameter of the upper port of the said cone section 4e1 is smaller than the diameter of the lower port of the said cone section 4e1, the diameter of the lower port of the said cone section 4e1 is the same as the diameter of the said cylindrical section 4e2, the diameter of said conical section 4e2 is greater than the diameter of the said steel ball 4e 2; the bottom surface of the push block body 4b is provided with a spring mounting seat 4f for mounting the spring 4c, the spring mounting seat 4f is of a U-shaped structure, the top of the U-shaped structure and the bottom surface of the push block body 4b are connected into a whole, the bottom of the U-shaped structure is provided with a through hole 4f1 corresponding to the position of the mounting through hole 4e, a spring limiting clamping table 4g for mounting the spring 4c is clamped in the through hole 4f1, the upper end of the spring 4c is used for pressing the steel ball 4d in the mounting through hole 4e, and the lower end of the spring 4c is clamped on the spring limiting clamping table 4 g.
Through designing the installation through hole 4e into the sectional type structure that is formed by splicing frustum section 4e1 and cylinder section 4e2 to the diameter design of the last port of frustum section 4e1 is less than the diameter of steel ball 4d, like this, steel ball 4d can not deviate from in the installation through hole 4e, simultaneously, through adding the spring mount pad 4f who establishes U type structure on the bottom surface of ejector pad body 4b, and with the lower extreme of spring 4c through the spacing clamping of spring 4g cartridge on spring mount pad 4f, can make this slider mechanism be monolithic structure like this, the problem of frame that can not appear scattering.
The spring limiting clamping table 4g comprises a spring clamping portion 4g1, a spring supporting portion 4g2 and an installation clamping portion 4g3, wherein the lower end of the spring clamping portion 4g1 is connected with the upper end of the spring supporting portion 4g2, the lower end of the spring supporting portion 4g2 is connected with the upper end of the installation clamping portion 4g3, the spring clamping portion 4g1, the spring supporting portion 4g2 and the installation clamping portion 4g3 are of cylindrical structures, the outer diameter of the spring clamping portion 4g1 is matched with the inner diameter of the spring 4c, the outer diameter of the spring 4c is smaller than the outer diameter of the spring supporting portion 4g2, the outer diameter of the spring supporting portion 4g2 is larger than the diameter of the through hole 4f1, the diameter of the through hole 4f1 is matched with the outer diameter of the installation clamping portion 4g3, the installation clamping portion 4g3 is clamped in the through hole 4f1, and the lower end of the spring 4c is clamped on the spring clamping portion 4g 1.
A tool retracting groove 4g4 is provided at a portion where the lower end of the spring supporting portion 4g2 is connected to the upper end of the mounting engaging portion 4g 3. The added tool retracting groove 4g4 facilitates processing of the spring limiting clamping table 4g on one hand, and on the other hand, the spring supporting portion 4g2 can be ensured to be clamped on the bottom of the spring mounting seat 4f smoothly. The lower end of the installation clamping part 4g3 is provided with a conical surface 4g5. The added conical surface 4g5 facilitates the installation of the spring limit clamping table 4 g.
The diameter of the cylindrical section 4e2 is the same as the diameter of the through hole 4f 1. Through designing the diameter of the cylindrical section 4e2 to be the same as the diameter of the through hole 4f1, the through hole 4f1 and the mounting through hole 4e can be sequentially processed from bottom to top at one time, and therefore the production efficiency of the sliding block mechanism is improved.
The distance D between the two radial boss side surfaces 5a1 of the first boss 5a is smaller than the circumferential width H of the push block mounting groove 1a, and the first boss 5a faces the boss end surface 5a2 of the gear hub 1 and abuts against the push block body 4 b. The boss end face 5a2 facing the gear hub 1 through the first boss 5a is designed to be propped against the push block body 4b, so that the first boss 5a can not only play a clamping role, but also play a limiting role of the push block body 4 b.
According to the embodiment, the two synchronizing rings 5 are always pressed towards the gear hub 1 through the added tension spring 6, so that the synchronizing rings 5 cannot axially float, friction moment generated between the synchronizing rings 5 on the non-gear side and the cone hub 2 due to axial float of the synchronizing rings 5 is avoided, overall drag moment of the gearbox is reduced, transmission efficiency of the gearbox is improved, and service lives of the synchronizing rings 5 and the cone hub 2 are prolonged; when the synchronizing ring 5 and the cone hub 2 are worn for a period of time, the tension spring 6 automatically shortens due to the elasticity of the tension spring 6, so that the two synchronizing rings 5 are continuously pressed towards the gear hub 1, the service life is further prolonged, and if the synchronizing ring 5 is limited to axially float by adopting a part which is not automatically shortened, the synchronizing ring 5 still axially float after the synchronizing ring 5 and the cone hub 2 are worn for a period of time; by adding the second boss 5b and then arranging the notch 5b1 and the tension spring hole 5b2 on the second boss 5b, the strength of the synchronizing ring 5 can be improved, and the service life is further prolonged; through designing the sinking groove 5c at the position of the synchronizing ring 5 corresponding to the tension spring hole 5b2, the outward leakage of the spring hook 6b of the tension spring 6 can be avoided, and the interference of the tension spring 6 and other parts can be prevented; the installation through hole 4e is designed to be of a sectional structure formed by splicing the frustum section 4e1 and the cylindrical section 4e2, and the diameter of the upper port of the frustum section 4e1 is designed to be smaller than the diameter of the steel ball 4d, so that the steel ball 4d cannot fall out of the installation through hole 4 e; the spring mounting seat 4f with a U-shaped structure is additionally arranged on the bottom surface of the push block body 4b, and the lower end of the spring 4c is clamped on the spring mounting seat 4f through the spring limiting clamping table 4g, so that the sliding block mechanism is of an integral structure, and the problem of falling apart cannot occur; the added tool retracting groove 4g4 is convenient for processing the spring limiting clamping table 4g on one hand, and on the other hand, the spring supporting part 4g2 can be ensured to be clamped on the bottom of the spring mounting seat 4f smoothly; the added conical surface 4g5 facilitates the installation of the spring limit clamping table 4 g; the diameter of the cylindrical section 4e2 is designed to be the same as that of the through hole 4f1, so that the through hole 4f1 and the mounting through hole 4e can be sequentially processed from bottom to top at one time, and the production efficiency of the sliding block mechanism is improved; the boss end face 5a2 facing the gear hub 1 through the first boss 5a is designed to be propped against the push block body 4b, so that the first boss 5a can not only play a clamping role, but also play a limiting role of the push block body 4 b.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The synchronizer assembly comprises a gear hub (1), wherein two conical hubs (2) are respectively arranged on two sides of the gear hub (1), a sliding gear sleeve (3) is sleeved on the tooth surface of the gear hub (1), a push block mounting groove (1 a) is further formed in the tooth surface of the gear hub (1), a push block assembly (4) is arranged in the push block mounting groove (1 a), push block meshing teeth (4 a) matched with the inner surface of the sliding gear sleeve (3) are arranged on the outer surface of the push block assembly (4), the push block assembly (4) is meshed with the sliding gear sleeve (3) through the push block meshing teeth (4 a), a synchronizing ring (5) is respectively arranged between the push block assembly (4) and the two conical hubs (2), a first boss (5 a) is arranged at a position corresponding to the push block mounting groove (1 a), the first boss (5 a) is clamped in the push block mounting groove (1 a), the first boss (5 a) is characterized in that a tension spring (6 b) is arranged on the circumference of the push block assembly along the circumference of the push block mounting groove (1 a), at least one end face of the push block assembly is provided with a tension spring (5 b) along the circumference of the second boss (6 b), the other end of the second boss (5 b) is provided with a tension spring hole (5 b 2) for hooking a spring hook (6 b) of the tension spring (6), the position, corresponding to the second boss (5 b), on the tooth surface of the gear hub (1) is provided with a first through groove (1 b) for accommodating the spring body (6 a), the position, corresponding to the second boss (5 b), on the inner surface of the sliding gear sleeve (3) is provided with a second through groove (3 a) for accommodating the tension spring (6), the spring body (6 a) of the tension spring (6) is installed in a cavity formed by the first through groove (1 b), the second through groove (3 a) and the notch (5 b 1), the spring hook (6 b) at one end of the tension spring (6) is hooked in the tension spring hole (5 b 2) on one synchronizing ring (5), the spring hook (6 b) at the other end of the tension spring (6) is hooked in the other synchronizing ring (5) corresponding to the tension spring hole (5 b), and the two tension springs (5 b) are pressed towards the gear hub (1);
the second boss (5 b) and the first boss (5 a) are arranged in a staggered manner, the push block assembly (4) comprises a push block body (4 b) with push block meshing teeth (4 a) on the outer surface, a spring (4 c) and a steel ball (4 d), and the push block assembly is characterized in that an installation through hole (4 e) for installing the steel ball (4 d) and the spring (4 c) is formed in the position between two push block meshing teeth (4 a) on the push block body (4 b) in the radial direction, the installation through hole (4 e) comprises a conical section (4 e 1) and a cylindrical section (4 e 2), the lower port of the cylindrical section (4 e 2) is positioned on the bottom surface of the push block body (4 b), the upper port of the cylindrical section (4 e 2) is communicated with the lower port of the conical section (4 e 1), the upper port of the conical section (4 e 1) is positioned on the top surface of the push block body (4 b) and corresponds to the position between the two push block meshing teeth (4 a), and the diameter of the conical section (4 e) is larger than the diameter of the conical section (4 e) is larger than the diameter of the conical section (4 e 1), and the diameter of the conical section (4 e) is larger than the diameter of the conical section (4 e 2); the novel spring push block is characterized in that a spring mounting seat (4 f) for mounting the spring (4 c) is arranged on the bottom surface of the push block body (4 b), the spring mounting seat (4 f) is of a U-shaped structure, the top of the U-shaped structure and the bottom surface of the push block body (4 b) are connected into a whole, a through hole (4 f 1) is formed in the bottom of the U-shaped structure corresponding to the position of the mounting through hole (4 e), a spring limiting clamping table (4 g) for mounting the spring (4 c) is clamped in the through hole (4 f 1), the steel ball (4 d) is pressed in the mounting through hole (4 e) by the upper end of the spring (4 c), and the lower end of the spring (4 c) is clamped on the spring limiting clamping table (4 g).
2. A synchronizer assembly according to claim 1, wherein the number of the second bosses (5 b) is the same as the number of the first bosses (5 a), and the second bosses (5 b) and the first bosses (5 a) are alternately arranged in a circumferential direction of the synchronizer ring (5).
3. A synchronizer assembly according to claim 1, wherein the synchronizing ring (5) is provided with a countersink (5 c) at a position corresponding to the tension spring hole (5 b 2).
4. The synchronizer assembly according to claim 1, wherein the spring limit clamping table (4 g) comprises a spring clamping portion (4 g 1), a spring supporting portion (4 g 2) and a mounting clamping portion (4 g 3), the lower end of the spring clamping portion (4 g 1) is connected with the upper end of the spring supporting portion (4 g 2), the lower end of the spring supporting portion (4 g 2) is connected with the upper end of the mounting clamping portion (4 g 3), the spring clamping portion (4 g 1), the spring supporting portion (4 g 2) and the mounting clamping portion (4 g 3) are of cylindrical structures, the outer diameter of the spring clamping portion (4 g 1) is matched with the inner diameter of the spring (4 c), the outer diameter of the spring (4 c) is smaller than the outer diameter of the spring supporting portion (4 g 2), the outer diameter of the spring supporting portion (4 g 2) is larger than the diameter of the through hole (4 f 1), the outer diameter of the spring clamping portion (4 g 1) is matched with the inner diameter of the mounting clamping portion (4 g 3) in the through hole (4 g 1).
5. A synchronizer assembly according to claim 4, wherein a clearance groove (4 g 4) is provided at a portion where the lower end of the spring supporting portion (4 g 2) is connected to the upper end of the mounting snap-in portion (4 g 3).
6. A synchronizer assembly according to claim 4, wherein the lower end of the mounting snap-in portion (4 g 3) is provided with a tapered surface (4 g 5).
7. A synchronizer assembly according to claim 1, wherein the diameter of the cylindrical section (4 e 2) is the same as the diameter of the through hole (4 f 1).
8. A synchronizer assembly according to claim 1, wherein a distance D between two radial boss sides (5 a 1) of the first boss (5 a) is smaller than a circumferential width H of the push block mounting groove (1 a), and a boss end surface (5 a 2) of the first boss (5 a) facing the gear hub (1) abuts against the push block body (4 b).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710790858.6A CN107630945B (en) | 2017-09-05 | 2017-09-05 | Synchronizer assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710790858.6A CN107630945B (en) | 2017-09-05 | 2017-09-05 | Synchronizer assembly |
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| CN107630945A CN107630945A (en) | 2018-01-26 |
| CN107630945B true CN107630945B (en) | 2023-06-16 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108194531B (en) * | 2018-02-11 | 2023-06-16 | 十堰同创传动技术有限公司 | Buckle type synchronizer combined sliding block |
| CN108253036B (en) * | 2018-02-11 | 2023-06-16 | 十堰同创传动技术有限公司 | Jaw synchronizer combined sliding block |
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| Publication number | Publication date |
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| CN107630945A (en) | 2018-01-26 |
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