CN218598739U

CN218598739U - Retaining ring limiting mechanism for planetary transmission

Info

Publication number: CN218598739U
Application number: CN202223060937.7U
Authority: CN
Inventors: 程帅; 袁浩然; 陈流明; 杨玉龙
Original assignee: Zhejiang Xuanfu Technology Co ltd; Zhejiang Geely Holding Group Co Ltd
Current assignee: Zhejiang Xuanfu Technology Co ltd; Zhejiang Geely Holding Group Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-03-10
Anticipated expiration: 2032-11-17

Abstract

The utility model provides a retaining ring stop gear for planetary transmission, includes planet carrier, ring gear and circlip, the planet carrier includes mounting platform, mounting platform's surface is equipped with the external splines that a plurality of intervals set up, and is adjacent the external splines have first tooth's socket, the internal surface of ring gear is inwards protruding to be equipped with the internal splines that a plurality of intervals set up, and is adjacent the internal splines have the second tooth's socket, the external splines hold in the second tooth's socket, the internal splines hold in the first tooth's socket, circlip's radial at least one spacing groove that is provided with, mounting platform's terminal surface is protruding to be equipped with the locating part, the locating part holds spacing inslot can prevent the interruption of derailleur power transmission, become invalid, reduces circlip's the phenomenon of droing, guarantees the life of derailleur.

Description

Retaining ring limiting mechanism for planetary transmission

Technical Field

The utility model relates to a derailleur technical field especially relates to a retaining ring stop gear for planetary transmission.

Background

The planetary transmission is a commonly used automatic transmission in the prior art and comprises a plurality of braking modes, wherein in one of the overspeed transmission braking modes, a planet carrier is used as input to transmit torque to a gear ring to drive the gear ring and the planet carrier to rotate together, so that the transmission efficiency between the planet carrier and the gear ring directly influences the normal use of the transmission.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a retainer ring limiting mechanism for a planetary transmission.

The utility model provides a retaining ring stop gear for planetary transmission, including planet carrier, ring gear and circlip, the ring gear with the planet carrier is coaxial to be set up, the planet carrier includes mounting platform, the ring gear cover is established on the mounting platform, circlip sets up on mounting platform's the terminal surface, and radially lie in at the radial mounting platform with between the ring gear, mounting platform's surface is equipped with the external splines that a plurality of intervals set up, and is adjacent the external splines have first tooth's socket, the internal surface of ring gear inwards protruding internal splines that are equipped with a plurality of intervals and set up, and is adjacent the internal splines have the second tooth's socket, the external splines hold in the second tooth's socket, the internal splines hold in the first tooth's socket, circlip radially is provided with at least one spacing groove, mounting platform's the protruding locating part that is equipped with of terminal surface, the locating part holds in the spacing inslot.

In one embodiment, the dimension of the limiting groove in the circumferential direction is equal to or smaller than the dimension of the limiting member.

In an embodiment, the limiting groove is disposed on an outer side of the elastic retaining ring, the limiting member is integrally formed with the external spline, and the limiting member is formed by protruding upward in an axial direction of the external spline.

In an embodiment, the elastic collar includes a notch, the notch radially penetrates through the elastic collar, a positioning stopper matched with the notch is arranged on the mounting platform, and when the elastic collar is mounted between the mounting platform and the gear ring, the positioning stopper is accommodated in the notch.

In one embodiment, a fixture block is convexly arranged on the end face of the mounting platform, the fixture block is abutted to the inner side surface of the elastic check ring, and the fixture block is used for limiting the elastic check ring in the radial direction and the circumferential direction.

In an embodiment, the height of the fixture block in the axial direction is greater than or equal to the thickness of the elastic retainer ring.

In an embodiment, a retainer ring groove is formed in the inner spline, the retainer ring groove is matched with the elastic retainer ring in thickness, and the elastic retainer ring is clamped in the retainer ring groove. Namely, the retainer groove and the elastic retainer ring form an assembling and matching relationship.

In one embodiment, the inner side of the elastic check ring is provided with an installation groove, the installation groove is used for clamping an installation part, the installation groove and the end part of the installation part are in profile modeling, and when the elastic check ring is installed, the end part of the installation part is clamped in the installation groove to fix and limit the elastic check ring.

In one embodiment, the mounting platform is integrally formed with the planet carrier.

The beneficial effects of the utility model reside in that:

through the matching between the external spline and the internal spline, torque can be transmitted between the planet carrier and the gear ring, the elastic retainer ring can be radially and circumferentially limited by arranging the limiting groove on the elastic retainer ring, when the planet carrier is in transmission with the gear ring, the circumferential movement phenomenon of the elastic retainer ring in the transmission process is reduced, and when the planet carrier is used for a long time, the circumferential movement of the elastic retainer ring can cause the instability of the elastic retainer ring, so that the falling risk is generated; through the cooperation of spacing groove and locating part, can prevent the circlip drunkenness, avoid the risk that circlip drops, and then can prevent that interrupt, the inefficacy phenomenon of derailleur power transmission from taking place, guarantee the life of derailleur.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on these drawings without inventive efforts.

Fig. 1 is a schematic view of an overall structure of an embodiment of the present invention;

fig. 2 is a schematic structural view of a planet carrier and a circlip according to an embodiment of the present invention;

FIG. 3 is an enlarged view of the notch and the fixture block of FIG. 1;

FIG. 4 is a partially enlarged view of the engagement between the limiting groove and the limiting member in FIG. 2;

fig. 5 is a schematic structural view of a gear ring and a retainer ring according to an embodiment of the present invention;

fig. 6 is a partially enlarged view of the retainer groove of fig. 5.

1-a planet carrier; 101-an axle hole; 102-external splines; 103-a first tooth slot; 104-positioning stop block; 105-a fixture block; 106-a stop; 107-mounting grooves; 2-a gear ring; 201-internal splines; 202-a second tooth slot; 203-a retainer groove; 3-elastic retainer ring; 301-a notch; 302-limiting groove.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments obtained by a person skilled in the art without any inventive work based on the description of the present invention belong to the protection scope of the present invention.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms can be understood in a specific case to those of ordinary skill in the art.

The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", and the like, refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally placed during use of the invention, for convenience of description and simplicity of illustration, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the invention.

The terms "first," "second," "third," and the like are used solely to distinguish between similar elements and not to indicate or imply relative importance or a particular order.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.

As shown in fig. 1 and fig. 2, the utility model provides a retaining ring stop gear for planetary transmission includes planet carrier 1, ring gear 2 and circlip 3, planet carrier 1 includes mounting platform, ring gear 2 cover is established on planet carrier 1's mounting platform, and with the coaxial setting of planet carrier 1, circlip 3 sets up on mounting platform's terminal surface, and be located between mounting platform and the ring gear 2, planet carrier 1 includes shaft hole 101, shaft hole 101 is used for wearing to establish the power shaft, mounting platform's surface is equipped with the external splines 102 that a plurality of intervals set up, leave first tooth's socket 103 between two adjacent external splines 102, the internal surface of ring gear 2 inwards extrudees the internal spline 201 that a plurality of intervals set up, leave second tooth's socket 202 between two adjacent internal splines 201, when ring gear 2 cover is established on mounting platform, external spline 102 is located second tooth's socket 202, internal spline 201 is located first tooth's socket 103, under a operating mode of planetary transmission, planet carrier 1 is rotary motion along its self axial under the power shaft drive, through external spline 102 and second tooth's socket 202, the cooperation of internal spline 201 and first tooth's socket 103, and then drive the rotary motion, 2 drive.

In one example of the present embodiment, the mounting platform is integrally formed with the planet carrier 1.

With reference to fig. 1 and fig. 3, the circlip 3 includes a notch 301, and the notch 301 radially penetrates through the circlip 3, so that the circlip 3 has two free ends, the mounting platform is provided with a positioning stop 104 matched with the notch 301, and when the circlip 3 is mounted between the mounting platform and the gear ring 2, the positioning stop 104 is accommodated in the notch 301, thereby facilitating the quick positioning and mounting of the circlip 3 and improving the mounting efficiency.

As shown in fig. 3, the end surface of the mounting platform is convexly provided with the fixture block 105, the fixture block 105 is arranged on the inner side of the elastic collar 3, namely, on the side of the elastic collar 3 radially far away from the gear ring 2, the fixture block 105 abuts against the inner side surface of the elastic collar 3, the elastic collar 3 can be limited in the radial direction and the circumferential direction by the fixture block 105, the elastic collar 3 is prevented from loosening and falling off in the transmission process of the planet carrier 1 and the gear ring 2, and the normal use of the elastic collar 3 is ensured.

Illustratively, the height of the fixture block 105 in the axial direction is greater than or equal to the height of the circlip 3 in the axial direction, that is, the height of the fixture block 105 is greater than or equal to the thickness of the circlip 3, so as to perform a better limiting effect on the circlip 3.

In an example of the present embodiment, two latching blocks 105 are provided, two latching blocks 105 are respectively provided on two sides of the notch 301, and radially abut against two free ends of the elastic collar 3, and the latching blocks 105 cooperate with the positioning block 104, so that the elastic collar 3 can be prevented from moving in the radial direction and the circumferential direction.

In an example of this embodiment, as shown in fig. 2, the elastic retaining ring 3 is provided with at least one limiting groove 302 in a radial direction, the limiting groove 302 penetrates through the elastic retaining ring 3 in an axial direction, the limiting groove 302 is opened at an outer side of the elastic retaining ring 3, that is, one side of the elastic retaining ring 3 close to the gear ring 2, a limiting member 106 engaged with the limiting groove 302 is convexly provided on an end surface of the mounting platform, the limiting member 106 is accommodated in the limiting groove 302 to limit the elastic retaining ring 3 in the radial direction and the circumferential direction, illustratively, a size of the limiting groove 302 in the circumferential direction is equal to or greater than a size of the limiting member 106, when mounting, the limiting member 106 is accommodated in the limiting groove 302, and the arrangement is such that the mounting of the elastic retaining ring 3 is stable. Illustratively, as shown in fig. 4, the limiting member 106 is integrally formed with the external spline 102, and the limiting member 106 is formed by upwardly protruding the external spline 102, which is convenient for forming. It will be appreciated that when the size of the retaining groove 302 in the circumferential direction is greater than the size of the retaining member 106, it should be within a reasonable range for assembly and design, rather than an infinite size greater than the size of the retaining member 106.

In another example of the present embodiment, the limiting groove 302 is opened on the inner side of the elastic collar 3, that is, on the side of the elastic collar 3 away from the gear ring 2, the limiting member 106 is protruded on the end surface of the mounting platform and is located on the inner side surface of the elastic collar 3, and the limiting member 106 is accommodated in the limiting groove 302 to limit the elastic collar 3.

In another example of the present embodiment, the limiting grooves 302 are respectively opened on the inner side and the outer side of the circlip 3, so as to achieve a better limiting effect.

Through the cooperation of the limiting piece 106 and the fixture block 105, the elastic check ring 3 can be limited in the radial direction and the circumferential direction, the fixture block 105 can prevent the elastic check ring 3 from moving towards one side close to the shaft hole 101, the limiting piece 106 prevents the elastic check ring 3 from moving towards one side close to the gear ring 2, and the transmission effect between the planet carrier 1 and the gear ring 2 is ensured.

It should be noted that, in order to facilitate understanding of the matching relationship between the notch 301 and the positioning stopper 104, the size and the broken part of the notch 301 are drawn in other shapes in fig. 1 and 3, so as to observe the relationship between the technical features, and do not represent the limitation of the shape and the size of the notch 301.

In an example of the present embodiment, with reference to fig. 5 and fig. 6, the inner side of the ring gear 2 is provided with a retainer groove 203, and more specifically, the retainer groove 203 is provided on the internal spline 201, the retainer groove 203 is provided in accordance with the thickness of the circlip 3, the circlip 3 is clamped in the retainer groove 203, and the height of the retainer groove 203 is set such that the bottom surface of the circlip 3 can be placed on the end surface of the mounting platform while the circlip 3 is disposed in the retainer groove 203.

In an example of this embodiment, as shown in fig. 2, the elastic collar 3 is further provided with a mounting groove 107, the mounting groove 107 is disposed in cooperation with a mounting member, the mounting member can be clamped in the mounting groove 107, the mounting groove 107 is configured to be contoured to an end of the mounting member, the mounting member can be a T-shaped block, a bar-shaped block, tweezers, and the like, when the elastic collar 3 is mounted, the elastic collar 3 is first placed on an end surface of the mounting platform, at this time, the positioning stopper 104 is accommodated in the notch 301, a technician holds the mounting member by hand, the end of the mounting member is clamped in the mounting groove 107, a radial force is applied to the elastic collar 3, so that an outer side of the elastic collar 3 enters the collar groove 203, and then the other positions of the elastic collar 3 are shifted into the collar groove 203 by hand, the technician stops the limiting groove 302 by moving the limiting member 106 in the limiting groove 302, and the mounting member can ensure that when the limiting groove 302 deforms, the elastic collar 3 as a whole remains stable, thereby preventing the elastic collar 3 from shifting, and ensuring the mounting efficiency.

In summary, through the matching between the external spline 102 and the internal spline 201, torque can be transmitted between the planet carrier 1 and the gear ring 2, the limit groove 302 is arranged on the elastic check ring 3, and the limit piece 106 is matched with the limit groove 302, so that the elastic check ring 3 can be radially and circumferentially limited, when the planet carrier 1 and the gear ring 2 are in transmission, the circumferential movement of the elastic check ring 3 in the transmission process is reduced, and when the planet carrier is used for a long time, the circumferential movement of the elastic check ring 3 can cause the instability of the elastic check ring 3, and further, the falling risk exists; the size of the limiting groove 302 in the vertical radial direction is equal to or smaller than the size of the limiting part 106, when the size of the limiting groove 302 is equal to the size of the limiting part 106, the limiting part 106 is directly accommodated in the limiting groove 302, when the size of the limiting groove 302 is smaller than the size of the limiting part 106, the limiting groove 302 is deformed under the elastic action of the elastic retainer ring 3, the limiting part 106 is clamped in the limiting groove 302, through the matching of the limiting groove 302 and the limiting part 106, the movement of the elastic retainer ring 3 can be prevented, the risk that the elastic retainer ring 3 falls off is avoided, the interruption and the failure of power transmission of the transmission can be prevented, and the service life of the transmission is ensured.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a retaining ring stop gear for planetary transmission which characterized in that: including planet carrier (1), ring gear (2) and circlip (3), ring gear (2) with planet carrier (1) coaxial arrangement, planet carrier (1) includes mounting platform, ring gear (2) cover is established on the mounting platform, circlip (3) set up on mounting platform's the terminal surface, and radially lie in mounting platform with between ring gear (2), mounting platform's surface is equipped with external splines (102) that a plurality of intervals set up, and is adjacent external splines (102) have first tooth's socket (103), the internal surface of ring gear (2) is inwards protruding to be equipped with internal splines (201) that a plurality of intervals set up, and is adjacent internal splines (201) have second tooth's socket (202), external splines (102) hold in second tooth's socket (202), internal splines (201) hold in first tooth's socket (103), circlip (3) radially be provided with at least one spacing groove (302), mounting platform's terminal surface is protruding to be equipped with locating part (106), locating part (106) hold in spacing groove (302).

2. The retainer ring stopper mechanism for a planetary transmission according to claim 1, characterized in that: the dimension of the limiting groove (302) in the circumferential direction is equal to or larger than the dimension of the limiting piece (106).

3. The retainer ring stopper mechanism for a planetary transmission according to claim 1, characterized in that: the limiting groove (302) is formed in the outer side of the elastic retainer ring (3), the limiting piece (106) and the external spline (102) are integrally formed, and the limiting piece (106) is formed by protruding upwards in the axial direction of the external spline (102).

4. The retainer ring stopper mechanism for a planetary transmission according to claim 1, characterized in that: the elastic retainer ring (3) comprises a notch (301), the notch (301) penetrates through the elastic retainer ring (3) along the radial direction, a positioning stop block (104) matched with the notch (301) is arranged on the end face of the mounting platform, and when the elastic retainer ring (3) is mounted between the mounting platform and the gear ring (2), the positioning stop block (104) is accommodated in the notch (301).

5. The retainer ring stopper mechanism for a planetary transmission according to claim 1 or 4, characterized in that: the end face of the mounting platform is convexly provided with a clamping block (105), the clamping block (105) is abutted to the inner side surface of the elastic check ring (3), and the clamping block (105) is used for limiting the elastic check ring (3) in the radial direction and the circumferential direction.

6. The retainer ring stopper mechanism for a planetary transmission according to claim 5, characterized in that: the height of the clamping block (105) in the axial direction is larger than or equal to the thickness of the elastic retainer ring (3).

7. The retainer ring limit mechanism for a planetary transmission according to claim 1, characterized in that: and a retainer ring groove (203) is formed in the inner spline (201), the retainer ring groove (203) is matched with the thickness of the elastic retainer ring (3), and the elastic retainer ring (3) is clamped in the retainer ring groove (203).

8. The retainer ring stopper mechanism for a planetary transmission according to claim 1, characterized in that: the inboard of circlip (3) is equipped with mounting groove (107), mounting groove (107) are used for the card to establish the installed part, mounting groove (107) with the tip profile modeling of installed part, at the installation during circlip (3), the tip card of installed part is established in mounting groove (107), right circlip (3) are fixed spacingly.

9. The retainer ring stopper mechanism for a planetary transmission according to claim 1, characterized in that: the mounting platform and the planet carrier (1) are integrally formed.