TWM455631U - Rear hub structure - Google Patents

Description

Rear hub structure

This creation relates to a rear hub structure, especially a design that uses a cover bearing bearing to reduce the lateral force applied to the bearing, and has the effect of improving the service life.

Generally, the structure of the rear flower drum is respectively provided with a bearing inside the two ends of the hub body, and a ratchet sleeve is sleeved at one end of the rear drum, and a bearing is also arranged inside the ratchet sleeve, and then the mandrel is worn and the hub is worn. a ratchet sleeve and each bearing, and two side covers are respectively disposed at two ends of the mandrel, the two ends of the mandrel are connected to the rear fork, and the rear hub and the mandrel are mutually rotatable to provide rear wheel rotation The effect of marching.

The side cover assembly mode of the rear hub structure can be generally divided into a lock type and a press fit type.

According to the conventionally-locked side cover, the hub of the present invention, as disclosed in the Japanese Patent No. 099104719, the "flower hub having an improved claw movable structure" includes: a mandrel extending along an axial direction; a hub shell rotatable Positioning on the mandrel; a gear base rotatably disposed on the mandrel and adjacent to the hub shell, the gear base having an inner end extending into the hub shell, a direction opposite to the inner side of the hub shell An outer end portion of the end portion, and a mounting groove spaced apart from the inner end portion and extending along the axial direction toward the outer end portion, the inner end portion having a plurality of bottom surface portions respectively defining the bottoms of the mounting grooves And extending from the outer edge of the bottom surface of the groove in the axial direction toward the outer side and defining the same a groove side portion of the side edge of the mounting groove, and a step portion extending from the side surface portion of the groove in the axial direction to the inside of the mounting groove; and a clutch unit disposed on the hub shell and the gear base Between the inner end portions, the clutch unit has a ratchet ring disposed in the hub shell, a plurality of claws swingably disposed in the mounting slots, and a rear end portion disposed on the inner end portion An elastic member that maintains one-way engagement between the pawl and the ratchet ring, and the pawls abut against the step portions, respectively, and are spaced apart from the side portions of the grooves by a gap.

A bicycle structure is disclosed in the prior art. The bicycle bicycle hub structure disclosed in the Japanese Patent No. 100213358 is a hub body having a set of mouths at both ends of the hub body. A mandrel is disposed through the sleeve, and a portion of the mandrel that passes through the sleeve of the hub body forms a connecting portion; a flywheel socket is respectively provided with a well groove inwardly, wherein a well is accommodated with a first Palin The other well is accommodated with a second Palin, the flywheel bearing, the first and second Palin are penetrated by the connecting end of one end of the mandrel, and the flywheel bearing is connected in series with the hub body And the first port is located at one end of the sleeve, and the second layer is located at an end away from the sleeve; the end of the mandrel is provided with a step corresponding to the second Palin The flywheel bearing seat is provided with a cover for closing the well in the second Palin, so that the second Palin is positioned by the edge and the cover, and the mandrel is near the first Palin a washer is disposed at the hub body, and the sleeve of the flywheel bearing body is provided with a third Palin, and the washer Respectively, by the end of the first and third Peilin Peilin of abut against.

In the above-mentioned structure, the former is to pass the mandrel through the hub shell, the first bearing, a gear base and a second bearing, the two ends of the mandrel are respectively locked and fixed with a limiting piece, the inner end portion has a plurality of groove side portions, and a plurality of step portions extending from the side surface portions of the grooves into the mounting groove The number of claws of the clutch unit respectively abuts the step portions, and a gap is spaced apart from the side portions of the grooves to reduce the frictional friction resistance of the claws; the latter is to thread the mandrel through the hub body With the flywheel bearing, and wearing the first, second, third and fourth Palin, the flywheel is press-fitted at the second Palin with a cover, and the mandrel is press-fitted at the fourth Palin There is a cover, so that the second Palin is positioned by the edge and the cover, and the first Palin and the third Palin are respectively pressed against the two ends of the gasket.

However, regardless of the lock type or press-fit side cover, each bearing is sleeved and applied to the mandrel, and the tolerance between the two ends of the hub and the mandrel is easy to be processed, and the bearings are caused by the hub and heart. The cumulative tolerance between the shafts, or the ends of the hub and the mandrel are not on the same axis, so that the assembly of the mandrel cannot reach the optimal placement position, and the bearing rotation is abnormal, the service life is reduced, and the mandrel is improperly affected. The force is easy to produce bending deformation, and the side cover is locked. The relative position of the bearing after assembly is locked, the lateral force of the bearing is excessively increased, and the bearing life is reduced, so the overall structure is necessary for improvement; The creator further provides a practical and innovative hub structure for the aforementioned problems.

In view of this, the drum structure after the creation of the present invention comprises: a hub body, which is a hollow cylinder which is penetrated at both ends; a mandrel is hollow tubular, which is worn on the hub body; a ratchet sleeve The cylinder is in the form of a hollow cylinder which is sleeved at one end of the hub body; a bearing set is attached to the hub body and the inner portion of the ratchet sleeve There is at least one bearing; the second cover is a sleeve shape with two ends running through, and one end of each cover is assembled with the rear fork, so that the other end of the second cover is respectively disposed with the hub body and the ratchet sleeve And the bearing and the two ends of the mandrel are respectively connected; by the above components, the second cover can carry the bearing, avoiding the improper bearing force of the bearing, and can reduce the cumulative tolerance of the hub body and the mandrel assembly, and effectively improve The service life and the overall structure can be convenient and practical.

One of the purposes of the present invention is to provide a rear hub structure, a mandrel is disposed inside the hub body, and a hub sleeve is sleeved at one end of the hub body, and a bearing is disposed inside the hub body and the ratchet sleeve respectively. The two covers are respectively locked to the two ends of the mandrel, and the outer diameters of the two covers respectively carry the bearings, so that the axis can be fixed, and the improper bearing force of the bearings at both ends can be avoided, thereby effectively improving the service life. , for the ultimate in practicality and convenience.

The second purpose of the present invention is to provide a rear hub structure, the hub of the hub is provided with a gap away from the bearing at one end of the ratchet sleeve, so as to avoid excessive concentricity difference, so that the two ends of the cover can be locked to the mandrel. The lateral force applied to the bearing when the cover is assembled and tightened can be reduced, and the displacement of the bearing can be avoided to cause the bearing to be unstressed to improve the service life of the bearing.

The third purpose of the present invention is to provide a rear hub structure. There is no bearing arrangement between the mandrel and the ratchet sleeve, which can reduce the occurrence of cumulative tolerance, so that the bearings at both ends can be accurately assembled between the hub of the hub and the cover of the two ends. .

First, please refer to the first to fifth figures. The rear drum structure provided by the present invention mainly includes: a hub body (10), a spindle (20), a ratchet sleeve (30), and a bearing set (40). ) and two covers.

The hub body (10) is a hollow cylinder body which is penetrated at both ends, and a connecting portion (11) is respectively recessed at both ends thereof.

The mandrel (20) has a hollow tubular shape, and the hub body (10) is inserted through the hub body (10), and one end protrudes from the hub body (10). The two ends of the mandrel (20) are respectively provided with a set of joints (21). The set of joints (21) can be set as an internal threaded section or an externally threaded section.

The ratchet sleeve (30) has a hollow cylindrical shape, and one end thereof is sleeved on the connecting portion (11) at one end of the hub body (10), and is interposed with the mandrel (20). The ratchet sleeve (30) a ratchet structure (31) is disposed corresponding to the connecting portion (11), and the ratchet sleeve (30) is disposed away from the outer portion of the connecting portion (11) to support the hub body ( 10) Make a rotation.

The bearing set (40) is respectively provided with at least one bearing in the connecting portion (11) of the hub body (10) and the ratchet sleeve (30), and in the embodiment, is attached to the hub body ( 10) A first bearing (41) is disposed in the connecting portion (11) away from the end of the ratchet sleeve (30), and the first bearing (41) and the axial inner edge (12) of the connecting portion (11) Forming a gap (d); the ratchet sleeve (30) is provided with a second bearing (42) away from one end of the hub body (10); the ratchet sleeve (30) is disposed between the portions of the connecting portion (11) There is a third bearing (43).

The two covers are sleeve-shaped at both ends, and in this embodiment, a first cover (50) and a second cover (60), the first cover (50) and the second cover (60) respectively have a body (51) (61), the body (51) (61) one end is available for assembly with the rear fork, and the other end of the body (51) (61) is axially extended with a joint portion (52) (62) corresponding to the mandrel (20) The assembly portion (21) is oppositely disposed as an externally threaded section or an internally threaded section for interlocking with the assembly portion (21), the first cover (50) and the second cover (60) The preset portion is radially convexly provided with one of the preset radii (53) (63), and the radius of the first cover (50) ring (53) is larger than the second cover (60) (63) a radius, an outer diameter between the circumference (53) (63) and the joint portion (52) (62) is formed with a receiving portion (54) (64), and the circumference (53) is away from one end of the body (51) And a flange (55) is provided between the receiving section (54); the joint portion (52) of the first cover (50) is disposed through the connecting portion of the hub body (10) away from the end of the ratchet sleeve (30) (11), and the first bearing (41) is inserted, and is interlocked with the connecting portion (21) of one end of the mandrel (20), so that the first bearing (41) is sleeved on the receiving section ( 54), the ring (53) cover is blocked by the connecting portion (11) and the outside of the first bearing (41), the mandrel (20) and the ring (53) abutting edge (55) are formed to be clamped against the inner ends of the first bearing (41); The joint portion (62) of the cover (60) passes through the ratchet sleeve (30) away from one end of the hub body (10), and passes through the second bearing (42) and is combined with the other end of the mandrel (20) The connecting portion (21) is interlocked with each other, so that the second bearing (42) is sleeved on the receiving portion (64), and the mandrel (20) and the surrounding ring (63) are clamped against the second bearing (42). Both ends of the inside.

The hub body (10) is provided with a ratchet sleeve (30) at one end thereof, and the hub bearing body (10) and the ratchet sleeve (30) are respectively provided with a first bearing (41) and a second bearing ( 42), the mandrel (20) is disposed through the hub body (10) and the ratchet sleeve (30), The two covers are respectively locked to the two ends of the mandrel (20), and the first bearing (41) and the second bearing (42) are respectively passed through, so that the two covers can respectively carry the first bearing (41) and The second bearing (42) can effectively prevent the bearing from being improperly stressed, and a gap (d) is provided between the first bearing (41) and the hub body (10) at one end to avoid excessive concentricity difference and avoid The mandrel (20) is offset to be assembled in an optimal position to effectively increase the service life of the structure, so that the overall structure is extremely practical and convenient.

In order to further understand the characteristics of this creation, the use of technical means and the expected results, the use of this creation is described as follows:

In the creation of the present invention, the mandrel (20) is passed through the hub body (10), and then the ratchet sleeve (30) is sleeved in the connecting portion (11) at one end of the hub body (10), and then The first cover (50) and the second cover (60) are respectively locked to the two ends of the mandrel (20), so that the first cover (50) passes through the first bearing (41), and the second The cover (60) is passed through the second bearing (42), that is, the assembly is completed.

The hub body (10) of the present invention is internally provided with the mandrel (20), and the hub body (10) is sleeved with a ratchet sleeve (30) at one end, the hub body (10) and the ratchet sleeve (30) The first bearing (41) and the second bearing (42) are respectively disposed inside, and the first cover (50) is disposed through the hub body (10) and the first bearing (41), and is locked One end of the mandrel (20), and the second cover (60) is disposed through the ratchet sleeve (30) and the second bearing (42), and is locked to the other end of the mandrel (20), then the The first cover (50) and the second cover (60) are located on the same axis, and the first cover (50) and the second cover (60) can respectively carry the first bearing with the outer diameter of both ends (41) and the second bearing (42), the shaft can be fixed, and the first bearing (41) and the second bearing (42) are separately supported at both ends, thereby avoiding each When the first bearing (41) and the second bearing (42) are improperly stressed, the service life is effectively improved, and the utility model and the convenience are excellent; the hub body (10) is away from the end of the ratchet sleeve (30). The first bearing (41) is provided with a gap (d) to avoid the cumulative tolerance between the hub body (10) and the mandrel (20), resulting in an excessive concentricity difference, so that the first cover (50) at both ends When the second cover (60) is locked to the mandrel (20), the first cover (50) and the second cover (60) can be lowered to be applied to the first bearing (41) and the second cover (60). The lateral force of the two bearings (42) can avoid the offset and cause the bearing to be improperly stressed to improve the service life of the bearing.

There is no bearing arrangement between the mandrel (20) and the ratchet sleeve (30) of the present invention, which can reduce the occurrence of cumulative tolerance, so that the two ends of the bearing can be accurately assembled to the hub body (10) and the two ends of the first one. Between the cover (50) and the second cover (60).

In summary, in the "rear flower drum structure" disclosed in the above, the hub body (10) is provided with a ratchet sleeve (30) at one end, and the hub body (10) and the ratchet sleeve (30) are respectively provided with a first inside. a bearing (41) and a second bearing (42), the mandrel (20) is disposed through the hub body (10) and the ratchet sleeve (30), and the two covers are respectively locked to the ends of the spindle (20) The second cover can respectively carry the first bearing (41) and the second bearing (42), which can effectively avoid the improper bearing force of the bearing, and can avoid excessive concentricity difference and avoid the deviation of the mandrel (20). In order to be able to assemble in the best position, effectively improve the service life of the structure, so that the whole industry has practical and practical benefits, and its structure has not been seen in books or public use, in line with the requirements of new patent applications, please ask Mingjian, granting patents as soon as possible, is a prayer.

For those who need to be clear, the above is the specific embodiment of the creation and the techniques used. The principle of operation, if it is changed according to the concept of this creation, the function of the function is still beyond the spirit of the manual and the drawings, and should be combined with Chen Ming within the scope of this creation.

(d) ‧ ‧ gap

(10)‧‧‧The drum body

(11) ‧‧‧ Connection Department

(12)‧‧‧ inside edge

(20)‧‧‧ mandrel

(21) ‧‧‧Team

(30)‧‧‧ratchet sleeve

(31)‧‧‧ ratchet structure

(40) ‧ ‧ bearing set

(41)‧‧‧First bearing

(42) ‧ ‧ second bearing

(43)‧‧‧ Third bearing

(50) ‧ ‧ first cover

(51) ‧‧‧ Ontology

(52) ‧ ‧ joints

(53) ‧‧‧Encirclement

(54) ‧‧‧Segment

(55) ‧ ‧ affiliation

(60) ‧ ‧ second cover

(61) ‧‧‧ Ontology

(62) ‧ ‧ joints

(63)‧‧‧Encirclement

(64) ‧‧‧Segment

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is a perspective exploded view of a preferred embodiment of the present invention.

The third figure is a combined cross-sectional view of a preferred embodiment of the present invention.

The fourth figure is a cross-sectional enlarged view of a preferred embodiment of the present invention.

The fifth drawing is a cross-sectional enlarged view of a preferred embodiment of the present invention.

(10)‧‧‧The drum body

(20)‧‧‧ mandrel

(30)‧‧‧ratchet sleeve

(31)‧‧‧ ratchet structure

(41)‧‧‧First bearing

(42) ‧ ‧ second bearing

(43)‧‧‧ Third bearing

(50) ‧ ‧ first cover

(51) ‧‧‧ Ontology

(60) ‧ ‧ second cover

Claims (6)

The utility model relates to a rear hub structure, which comprises: a hub body, which is a hollow cylinder body which is penetrated at both ends; a mandrel is hollow tubular, which is threaded through the hub body; a ratchet sleeve is hollow cylinder The bearing sleeve is disposed at one end of the hub body; a bearing set is respectively provided with at least one bearing inside the hub body and the ratchet sleeve; and the second cover is a sleeve shape which is penetrated at both ends, each of the seals One end of the cover is assembled with the rear fork, and the other ends of the two covers respectively pass through the hub body, the ratchet sleeve and the bearing, and are respectively assembled with the two ends of the spindle. According to the rear drum structure of claim 1, wherein the two ends of the mandrel are respectively provided with a set of joints, the set of joints being set as an internal thread section or an external thread section, the cover having a body, the body The other end of the axial extension is provided with a joint portion corresponding to the joint portion and oppositely disposed as an external thread portion or an internal thread portion to be interlocked with the joint portion. According to the rear structure of the rear drum of the first aspect of the patent application, the two ends of the hub body are respectively recessed with a connecting portion, and the bearing assembly is provided with a first bearing inside the end of the hub body away from the ratchet sleeve, the first bearing A gap is formed between the bearing and the inner edge of the axial portion of the connecting portion, and the ratchet sleeve is provided with a second bearing away from one end of the hub body. The rear drum structure according to the first aspect of the patent application, wherein the two ends of the hub body are respectively recessed with a connecting portion, the bearing set is attached to the hub body away from the spine A first bearing is disposed at one end of the wheel sleeve, and a gap is formed between the first bearing and the inner edge of the axial portion of the connecting portion. The ratchet sleeve is disposed at a position away from the end of the hub body, and a second bearing is disposed. A third bearing is arranged between the parts of the hub body. The rear cover structure according to the first aspect of the patent application, wherein the second cover is provided with a first cover and a second cover, and each of the first cover and the second cover respectively has a body, the body One end is combined with the rear fork, and the other end of the body is axially extended to be provided with a joint portion to be coupled with the mandrel, and the first cover and the second portion of the second cover are radially protruded from the preset portion to have a predetermined radius One of the circumferences, the outer circumference of the circumference and the joint portion is formed with one of the bearing bearing receiving sections. The rear cover structure according to the first aspect of the patent application, wherein the second cover is provided with a first cover and a second cover, and each of the first cover and the second cover respectively has a body, the body One end is combined with the rear fork, and the other end of the body is axially extended to be provided with a joint portion to be coupled with the mandrel, and the first cover and the second portion of the second cover are radially protruded from the preset portion to have a predetermined radius One of the circumferences, and the radius of the first cover ring is larger than the radius of the second cover ring, and the outer diameter between the ring and the joint portion forms a receiving portion of the bearing bearing, and the first cover is The ring is located away from one end of the body and is provided with an abutment between the receiving section to abut one end of the bearing.