CN219673256U - Axial limit structure of transmission piece - Google Patents

Abstract

This application provides an axial limiting structure for a transmission part. The axial limiting structure of the transmission part includes a shell, a rotating part and a clamping part; the shell surrounds the circumferential side of the rotating part; the outer surface of the rotating part is provided with a first annular slot, and the first annular slot is arranged on the rotating part In the middle part of the axial direction, a second annular slot is correspondingly provided on the shell; a part of the clamping member is arranged in the first annular slot, and the other part is arranged in the second annular slot. In this application, the first annular clamping groove is arranged in the axial middle of the rotating part, and cooperates with the second annular clamping groove on the housing, so that the clamping member itself is axially constrained, and solves the problem of the clamping member coming out of the jam during the transmission process. slot problem.

Description

Axial limiting structure of transmission parts

Technical field

The present application relates to the technical field of transmission components, and to an axial limiting structure of a transmission component.

Background technique

In the current transmission shaft system layout plan, components such as bearings, gears, clutches, etc. all need to design axial limit solutions. The axial limits are generally limited by pressure plates, locking nuts, snap rings, etc. on the end face.

At present, the commonly used solution is to install the clamping component on the end face of the limited part. There are several problems: the length of the snapping component is difficult to design, it is easy to come out if it is too short, and it is difficult to assemble if it is too long; the depth of the clamping slot also needs to be fully evaluated and verified. If it is too deep, it will be difficult to disassemble and assemble; if it is too shallow, the snap-in connector will easily come out; if it is too small, it will be difficult to control the fillet of the slot; if it is too small, it will cause stress concentration; if it is too large, the snap-in connector will easily come out.

Therefore, it is necessary to provide an improved axial limiting structure of the transmission member to solve the above problems.

Utility model content

The present application provides an axial limiting structure of a transmission part that can prevent the snap-in part from falling off.

The application discloses an axial limiting structure of a transmission part, which includes a shell, a rotating part and a clamping part; the shell surrounds the circumferential side of the rotating part; the outer surface of the rotating part is provided with a first annular The first annular clamping slot is arranged in the axial middle of the rotating member; the housing is provided with a corresponding second annular clamping slot; a part of the clamping member is arranged in the first annular clamping slot inside, and the other part is arranged in the second annular slot.

Further, the housing is a clutch outer hub; the rotating member is a baffle.

Further, the first annular slot includes a first slot wall and a second slot wall; the first slot wall is longer than the second slot wall in a radial direction.

Further, the first annular slot includes a first slot wall and a second slot wall; the second slot wall is provided with a plurality of notches penetrating the second slot wall.

Further, the clutch further includes a friction plate group, a piston, a piston pushing structure, a piston reset structure and an output shaft; the housing transmits power to the output shaft through the friction plate group.

Further, the outer end surface of the rotating member and the outer end surface of the housing are located in the same plane.

Further, the housing and the rotating member are connected through splines; when the housing rotates, the rotating member is driven to rotate.

Further, the housing is a housing disposed on the peripheral side of the planetary gear mechanism, and the rotating member is a ring gear of the planetary gear mechanism.

Further, the planetary gear mechanism further includes a planet gear and a sun gear connected to a planet gear carrier; the planet gear is drivingly connected to the rotating member and the sun gear.

Further, the clamping member is a snap ring.

Compared with the prior art, this application solves the problem of the transmission process by arranging the first annular clamping groove in the axial middle of the rotating member and cooperating with the second clamping slot on the housing so that the clamping member itself is axially constrained. The problem of the middle card connector coming out of the card slot.

It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit this specification.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.

Figure 1 is a side view of the axial limiting structure of the transmission part of the present application installed on the planetary gear train.

FIG. 2 is a front view of the planetary gear mechanism in FIG. 1 .

Figure 3 is a cross-sectional view of the axial limiting structure of the transmission component of the present application installed on the clutch.

Explanation of reference numbers: housing, 110; second annular slot, 111; planetary gear mechanism, 120; rotating member, 121; first annular slot, 1211; planetary gear, 122; planetary gear carrier, 123; sun gear, 124; clamping piece, 130; shell, 210; second annular slot, 211; cavity, 212; pressing structure, 220; rotating part, 221; first annular slot, 2211; first slot wall, 2112; second slot wall, 2113; friction plate group, 222; first friction plate, 2221; second friction plate, 2222; piston, 223; piston pushing structure, 224; piston reset structure, 225; clamping piece, 230; output shaft, 240.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of this specification, as detailed in the appended claims.

The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. Unless otherwise defined, the technical terms or scientific terms used in this specification shall have the usual meaning understood by a person with ordinary skills in the field to which this application belongs. "First", "second" and similar words used in this description and claims do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "one" or "one" do not indicate a limit on quantity, but rather indicate the existence of one. "Multiple" or "several" means two or more than two. Unless otherwise indicated, similar terms such as "front", "rear", "lower" and/or "upper" are for convenience of description only and are not intended to limit one position or one spatial orientation. "Including" or "including" and other similar words mean that the elements or objects appearing before "includes" or "includes" cover the elements or objects listed after "includes" or "includes" and their equivalents, and do not exclude other elements. or objects. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the disclosure. As used in this specification and the appended claims, the singular forms "a," "the" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

Next, the embodiments of this specification will be described in detail.

This application discloses an axial limiting structure of a transmission part, which includes a housing, a rotating part and a clamping part. The shell surrounds the circumferential side of the rotating part. The outer surface of the rotating member is surrounded by a first annular clamping groove, and the first annular clamping slot is arranged in the axial middle section of the rotating member. A second annular slot is correspondingly provided on the shell. A part of the clamping member is arranged in the first annular clamping groove, and the other part is arranged in the second annular clamping slot, thereby achieving the axial limiting function of the rotating member.

As shown in Figures 1 and 2, in one embodiment, the axial limiting structure of the transmission member is applied to the planetary gear train. The planetary gear train includes a housing 110 , a planetary gear mechanism 120 and a clamping member 130 . The planetary gear mechanism 120 includes, from the outside to the inside, an annular rotating member 121 , a planet gear 122 connected to a planet gear carrier 123 , and a sun gear 124 . The planet gear 122 meshes with the rotating member 121 and the sun gear 124 to transmit power. In this embodiment, the housing 110 is a housing surrounding the planetary gear mechanism 120 , and the rotating member 121 is an annular ring gear.

The outer surface of the rotating member 121 is provided with a first annular slot 1211 , and the first annular slot 1211 is arranged in the axial middle of the rotating member 121 . The side of the housing 110 facing the rotating member 121 is provided with a second annular groove 111 correspondingly. A part of the clamping member 130 is fixed in the second annular clamping groove 111, and the other part extends into the first annular clamping groove 1211. The latching member 130 may be a clasp ring.

The first annular clamping groove 1211 of the present application is provided in the axial middle section of the rotating member 121, and there is no need to provide a clamping slot at the end face of the rotating member 121. This reduces the axial space occupied by the planetary gear mechanism 120 and makes the structure more compact.

When the planetary gear mechanism 120 transmits power, the inner slope of the rotating member 121 will receive an axial force, and the force will be transmitted to the clamping member 130, causing the clamping member 130 to tend to come out of the slot. When the rotating member 121 itself also participates in the rotation, this tendency of disengagement becomes more obvious. The first annular clamping groove 1211 and the second annular clamping slot 111 of the present application will axially limit the clamping member 130 to prevent the clamping member 130 from coming out, effectively solving the problem of the clamping member coming out during the transmission process.

As shown in Figure 3, in another embodiment, the axial limiting structure of the transmission member of the present application is applied to a wet clutch. The wet clutch includes a housing 210, a pressing structure 220, a clamping member 230 and an output shaft 240. In this embodiment, the housing 210 is a clutch outer hub. The housing 210 includes a cavity 212 with an opening, and the opening of the cavity 212 faces toward the output shaft 240 . The pressing structure 220 is disposed in the cavity 212 , and a part of the output shaft 240 extends into the cavity 212 . The housing 210 is drivingly connected to the output shaft 240 through the pressing structure 220 .

The pressing structure 220 includes a rotating member 221, a friction plate group 222, a piston 223, a piston pushing structure 224 and a piston resetting structure 225. In this embodiment, the rotating member 221 is a baffle. The housing 210 is sequentially provided with a rotating member 221, a friction plate group 222 and a piston 223 inward from the opening of the cavity 212. The outer end surface of the rotating member 221 and the outer end surface of the housing 210 are located in the same plane. The piston pushing structure 224 is arranged on the side of the piston 223 away from the friction plate group 222 , and the piston reset structure 225 is arranged on the side of the piston 223 close to the friction plate group 222 .

The rotating member 221 is connected to the housing 210 through splines. The friction plate group 222 includes a plurality of first friction plates 2221 and second friction plates 2222 that are stacked together. The first friction plate 2221 and the second friction plate 2222 are arranged at intervals. The first friction plate 2221 is connected to the housing 210 , and the second friction plate 2222 is connected to the output shaft 240 . Piston 223 is connected to housing 210. When the housing 210 rotates, the rotating member 221, the first friction plate 2221 and the piston 223 rotate together with the housing 210.

The outer surface of the rotating member 221 is provided with a first annular slot 2211, and the first annular slot 2211 is arranged in the axial middle of the rotating member 221. The side of the housing 210 facing the rotating member 221 is provided with a second annular groove 211 correspondingly. A part of the clamping member 230 is fixed in the second annular clamping groove 211, and the other part extends into the first annular clamping groove 2211. The latching member 230 may be a clasp ring.

The first annular slot 2211 includes a first slot wall 2212 located on the inside and a second slot wall 2213 located on the outside. The length of the first slot wall 2212 in the radial direction is greater than that of the second slot wall 2213; or, the second slot wall 2213 is provided with a number of notches penetrating the second slot wall 2213.

When the components in the pressing structure 220 are installed, they are installed from the inside to the outside. The size of the finally installed rotating member 221 is determined by the remaining size of the cavity 212 . The first slot wall 2212 is longer in the radial direction than the second slot wall 2213 , or the second slot wall 2213 is provided with a number of notches penetrating the second slot wall 2213 . This allows the operator to measure the specifications of the rotating member 221 and facilitate selection of the thickness of the clamping member 230 .

When the clutch performs transmission, the housing 210 rotates. The piston pushing structure 224 pushes the piston 223 to move toward the friction plate group 222 and presses the friction plate group 222. The rotating member 221 is located outside the friction plate group 222 to limit the friction plate group 222. At this time, the first friction plate 2221 and the second friction plate 2222 fit together, and the housing 210 transmits power to the output shaft 240 through the friction plate group 222, driving the output shaft 240 to rotate.

When the clutch stops transmitting, the piston reset structure 225 pushes the piston 223 away from the friction plate group 222, the first friction plate 2221 and the second friction plate 2222 separate, and the housing 210 stops transmitting the output shaft 240.

During the operation of the clutch, the rotating member 221 bears an axial force, and the axial force is transmitted to the clamping member 230, so that the clamping member 230 tends to move in the axial direction, and thereby falls off from the slot. In this application, a first annular clamping groove 2211 is provided in the axial middle of the rotating member 221, and a corresponding second annular clamping slot 211 is provided in the housing 210, so that the clamping member 230 limits the position of the rotating member 221 and at the same time, the clamping slot The clamping member 230 will be axially limited to prevent the clamping member 230 from falling off and affecting the operation of the equipment.

This application provides a first annular clamping groove 2211 in the axial middle of the rotating member 221, so that there is no need to provide a clamping structure on the outer end surface of the rotating member 221. The outer end surface of the rotating member 221 and the outer end surface of the housing 210 are in the same plane, so that the clamping member 230 does not need to occupy too much axial space.

To sum up, the axial limiting structure of the transmission part disclosed in this application can axially limit the clamping part, effectively preventing the clamping part from falling off when the transmission mechanism is operating, thereby affecting the operation of the mechanism. At the same time, the anti-shedding structure of the present application eliminates the need to design the depth of the slot too deep and the radial length of the clamping component to be too long, which facilitates design and manufacturing. The rounded corners of the slot can also be enlarged, which can effectively prevent stress concentration.

Other embodiments of the present disclosure will readily occur to those skilled in the art, upon consideration of the specification and practice of the invention claimed herein. This specification is intended to cover any modifications, uses or adaptations of this specification that follow the general principles of this specification and include common knowledge or common technical means in the technical field that are not applied in this specification. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.

It is to be understood that this specification is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of this specification is limited only by the appended claims.

The above are only preferred embodiments of this specification and are not intended to limit this specification. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this specification shall be included in this specification. within the scope of protection.

Claims (10)

1. The axial limiting structure of the transmission piece is characterized by comprising a shell, a rotating piece and a clamping piece; the shell surrounds the periphery of the rotating piece; the outer surface of the rotating piece is provided with a first annular clamping groove, and the first annular clamping groove is arranged in the axial middle of the rotating piece; the shell is correspondingly provided with a second annular clamping groove; one part of the clamping piece is arranged in the first annular clamping groove, and the other part of the clamping piece is arranged in the second annular clamping groove.

2. The axial spacing structure of a transmission according to claim 1, wherein the housing is a clutch outer hub; the rotating piece is a baffle.

3. The axial limiting structure of the transmission member according to claim 1, wherein the first annular clamping groove comprises a first clamping groove wall and a second clamping groove wall; the first slot wall is radially longer than the second slot wall.

4. The axial limiting structure of the transmission member according to claim 1, wherein the first annular clamping groove comprises a first clamping groove wall and a second clamping groove wall; the second clamping groove wall is provided with a plurality of notches penetrating through the second clamping groove wall.

5. The axial limiting structure of the transmission according to claim 2, wherein the clutch further comprises a friction plate set, a piston pushing structure, a piston resetting structure and an output shaft; the housing transmits power to the output shaft through the friction plate set.

6. The axial limiting structure of the transmission member according to claim 2, wherein an outer end surface of the rotating member is located in the same plane as an outer end surface of the housing.

7. The axial limiting structure of the transmission member according to claim 2, wherein the housing is connected with the rotating member by a spline; and the shell drives the rotating piece to rotate when rotating.

8. The axial limiting structure of a transmission member according to claim 1, wherein the housing is a case provided on a peripheral side of the planetary gear mechanism, and the rotating member is a ring gear of the planetary gear mechanism.

9. The axial limiting structure of a transmission according to claim 8, wherein the planetary gear mechanism further comprises a planetary wheel and a sun wheel connected with a planetary wheel carrier; the planet wheel is in transmission connection with the rotating piece and the sun wheel.

10. The axial limiting structure of the transmission member according to claim 1, wherein the clamping member is a snap ring.