CN210715629U - Sliding type constant velocity universal joint and automobile - Google Patents
Sliding type constant velocity universal joint and automobile Download PDFInfo
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- CN210715629U CN210715629U CN201921710680.0U CN201921710680U CN210715629U CN 210715629 U CN210715629 U CN 210715629U CN 201921710680 U CN201921710680 U CN 201921710680U CN 210715629 U CN210715629 U CN 210715629U
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Abstract
The utility model discloses a sliding type constant velocity universal joint and an automobile, wherein the sliding type constant velocity universal joint comprises a shell, a three-fork joint and an outer ring, the inner side of the shell is provided with a protruding part at the position matched with the outer ring, the outer wall surface of the outer ring is provided with an inner concave part matched with the protruding part, the inner concave part of the outer ring and the shell can relatively slide along the surface contour of the protruding part on the shell, and the protruding part of the shell is provided with a first curved surface structure with inner concave upper and lower ends and protruding middle area, so that when the outer ring slides relative to the shell, the first curved surface structure with inner concave upper and lower ends and protruding middle area can provide a certain avoiding space for the outer ring, the mutual extrusion friction between the outer ring and the shell is reduced, the axial gradual force is reduced, and when the universal joint is stressed in the prior art, the large friction force is generated between, the vibration and noise of the mechanical vibration system are increased, and the performance of the transmission system of the automobile is poor.
Description
Technical Field
The utility model relates to an automobile manufacturing technical field, in particular to slidingtype constant velocity cardan joint and car.
Background
The traditional three-pin universal joint mainly refers to a universal joint connected with a transmission end of an automobile. The universal joint generally includes a housing, inner and outer rings, a needle and a spider. After the universal joint receives the torque, certain friction force is generated between the shell and the outer ring, between the outer ring and the roller pin, between the roller pin and the inner ring, and between the inner ring and the trifurcate joint, so that vibration and noise of a mechanical vibration system caused by the universal joint are increased, and the performance of a transmission system of the whole vehicle is poor.
Therefore, it is always sought by all joint companies to reduce the friction force inside the joint, but the friction force generated inside the joint during movement is also composed of a plurality of parts, including the friction force between the needle roller and the inner and outer rings, the friction force between the inner spherical surface of the inner ring and the Y-joint, and the friction force between the outer ring and the housing. Grease is often selected in the prior art to reduce the friction between the components. However, when the conventional tripod type universal joint receives a torque, a friction force is inevitably generated between the outer ring and the housing, and at this time, the outer ring deflects and presses against the housing (Rolling and Pitching), which increases an Axial gradual force gaf (generated Axial force) of the universal joint, i.e., a force generated from an Axial direction, or an Axial lift force, i.e., a friction force between internal parts of the universal joint during a movement process, i.e., the friction force between the roller pin and the inner and outer rings, the friction force between the inner spherical surface of the inner ring and the spider, and the friction force between the outer ring and the housing, so that vibration and noise of a mechanical vibration system caused by the universal joint are increased, which leads to poor performance of a transmission system of the entire vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve and produce great frictional force between outer loop and the casing among the prior art, river bend the environmental protection and easily take place to deflect for the casing and lead to increasing the axial of universal joint to become power gradually for the vibrations and the noise increase of the mechanical vibration system that the universal joint arouses, thereby make the not good problem of performance of the transmission system of whole car.
In order to solve the technical problem, the embodiment of the utility model discloses a sliding type constant velocity universal joint, including casing, trident and outer loop, trident sets up in the casing, and trident has the trunnion that sets up with the outer loop correspondence, the outer loop cover is located outside the trunnion, and set up in the casing, the inboard of casing and the position that the outer loop cooperates are provided with the bulge, the outer wall of outer loop is provided with the interior concave part with bulge looks adaptation, interior concave part is slidable along the surface profile of bulge relative to the bulge;
wherein, in the length extending direction of the trunnion corresponding to the outer ring,
the upper end and the lower end of the protruding part are recessed relative to the middle area of the protruding part, so that the protruding part forms a first curved surface structure with the upper end and the lower end recessed and the middle area protruding;
and the upper end and the lower end of the concave part are protruded towards the middle area of the concave part, so that the concave part forms a second curved surface structure with the upper end and the lower end protruded and the middle area recessed inwards.
By adopting the technical scheme, the protruding part and the concave part which are adaptive to each other are arranged between the shell and the outer ring, so that the outer ring and the shell can relatively slide along the surface profile of the protruding part on the shell, and the problems that when the universal joint is stressed in the prior art, large friction force is generated between the outer ring and the shell, vibration and noise of a mechanical vibration system are increased, and the performance of a transmission system of the whole vehicle is poor are effectively solved.
According to the utility model discloses a another embodiment, the utility model discloses a slidingtype constant velocity universal joint that embodiment discloses, first curved surface structure all is slick and sly curved surface with the surface of second curved surface structure, and first curved surface structure meets with second curved surface structure slick and sly transition.
Adopt above-mentioned technical scheme, the surface of first curved surface structure and second curved surface structure all is the rounding off curved surface, when the outer loop produced the deflection for the casing, the structure of rounding off curved surface is favorable to the outer loop to slide along the rounding off curved surface for the casing, with reduce the outer loop and take place the extrusion friction between the casing when deflecting for the casing when receiving the yawing force, thereby when effectively solving the universal joint atress among the prior art, produce great frictional force between outer loop and the casing, the vibrations and the noise increase of the mechanical vibration system that arouse, thereby make the not good problem of performance of the transmission system of whole car.
According to another embodiment of the present invention, a sliding constant velocity joint is disclosed, wherein the projecting portion and the concave portion are in transition fit.
By adopting the technical scheme, the protruding part and the concave part are in transition fit, so that a slidable space or gap is reserved between the protruding part and the concave part, the concave part is allowed to slide along the surface profile of the protruding part relative to the protruding part, and the extrusion friction between the outer ring provided with the concave part and the shell when the outer ring deflects relative to the shell provided with the protruding part under the action of deflection force is reduced, so that the problems that the universal joint in the prior art is stressed, large friction force is generated between the outer ring and the shell, vibration and noise of a mechanical vibration system are increased, and the performance of a transmission system of the whole vehicle is poor are effectively solved.
According to the utility model discloses a another embodiment, the utility model discloses a slidingtype constant velocity universal joint that embodiment discloses, slidingtype constant velocity universal joint still include correspond bearing pin and the inner ring that sets up with the outer loop, and inner ring, bearing pin and outer loop are radially overlapped outside locating the trunnion in proper order at the trunnion that corresponds, and on the length extending direction with the corresponding trunnion of outer loop, the middle zone orientation of casing roof is outstanding towards one side of keeping away from the trident to be formed with between the terminal surface of messenger's outer loop and the casing roof that corresponds and dodge the cavity.
Adopt above-mentioned technical scheme, the middle zone orientation of casing roof is outstanding towards the one side of keeping away from the trident, so that be formed with between the terminal surface of outer loop and the casing roof that corresponds and dodge the cavity, in order to allow the outer loop to take place to remove or deflect in the dodging cavity that forms on the casing roof, reduce contact friction and the extrusion between casing roof and the outer loop terminal surface, when further reducing the outer loop and receiving the deflection force for casing when taking place to deflect, thereby when effectively solving universal joint atress among the prior art, produce great frictional force between outer loop and the casing, the vibrations and the noise increase of the mechanical vibration system that arouse, thereby make the not good problem of transmission system's of whole car performance.
According to the utility model discloses a another embodiment, the utility model discloses a slidingtype constant velocity universal joint that embodiment discloses is provided with three gudgeon on the trident, and three gudgeon sets up along the even interval of circumference of trident, and each gudgeon correspondence is provided with inner ring, kingpin and outer loop.
Adopt above-mentioned technical scheme, the utility model provides a car, including foretell slidingtype constant velocity universal joint, the utility model discloses a car, during its slidingtype constant velocity universal joint atress of being connected with the derailleur end of car, the vibrations and the noise of the mechanical vibration system that arouse are less to make the transmission system's of this car performance better.
The utility model has the advantages that:
the utility model provides a sliding type constant velocity universal joint, which comprises a shell, a Y-shaped joint and an outer ring, wherein the Y-shaped joint is arranged in the shell and is provided with a trunnion which is arranged corresponding to the outer ring, the outer ring is sleeved outside the trunnion and is arranged in the shell, the inner side of the shell and the position where the outer ring is matched are provided with a protruding part, the outer wall surface of the outer ring is provided with an inner concave part which is matched with the protruding part, and the inner concave part can slide along the surface contour of the protruding part relative to the protruding part; in the length extending direction of the trunnion corresponding to the outer ring, the upper end and the lower end of the protruding part are recessed relative to the middle area of the protruding part, so that the protruding part forms a first curved surface structure with the upper end and the lower end recessed and the middle area protruding; and the upper end and the lower end of the concave part are protruded towards the middle area of the concave part, so that the concave part forms a second curved surface structure with the upper end and the lower end protruded and the middle area recessed inwards.
Through the structure, set up the protruding portion and the indent part that suit between casing and outer loop, make can slide along the surface profile of the protruding portion on the casing between outer loop and the casing relatively, and the protruding portion of casing sets up the first curved surface structure of both ends indent and middle zone salient about, so that when the outer loop slides for the casing, the first curved surface structure of both ends indent and middle zone salient about can provide certain space of dodging in the outer loop, reduce the mutual extrusion friction between outer loop and the casing, thereby reduce the axial and gradually become power, when effectively solving the universal joint atress among the prior art, produce great frictional force between outer loop and the casing, the vibrations and the noise increase of the mechanical vibration system that arouse, thereby make the not good problem of transmission system's of whole car performance.
Drawings
Fig. 1 is a schematic structural view of a sliding type constant velocity universal joint according to embodiment 1 of the present invention.
Description of reference numerals:
10. a sliding type constant velocity joint;
100. a housing;
110. a protruding portion;
1101. a first curved surface structure;
120. a housing top wall;
130. avoiding the cavity;
200. an outer ring;
210. a concave portion;
2101. a second curved surface structure;
300. a three-fork joint;
310. a trunnion;
400. rolling needles;
500. an inner ring.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. While the invention will be described in conjunction with the preferred embodiments, it is not intended that features of the invention be limited to only those embodiments. On the contrary, the intention of implementing the novel features described in connection with the embodiments is to cover other alternatives or modifications which may be extended based on the claims of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be practiced without these particulars. Furthermore, some of the specific details are omitted from the description so as not to obscure or obscure the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
It should be noted that in this specification, like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.
In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to which the present invention is directed must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present embodiment, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present embodiment can be understood in specific cases by those of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the embodiment of the present embodiment discloses a sliding type constant velocity universal joint 10, which includes a housing 100, a three-way joint 300 and an outer ring 200, wherein the three-way joint 300 is disposed in the housing 100, the three-way joint 300 has a trunnion 310 disposed corresponding to the outer ring 200, the outer ring 200 is sleeved outside the trunnion 310 and disposed in the housing 100, a protruding portion 110 is disposed at a position where the inner side of the housing 100 is fitted to the outer ring 200, an outer wall surface of the outer ring 200 is provided with an inner concave portion 210 fitted to the protruding portion 110, and the inner concave portion 210 is slidable relative to the protruding portion 110 along a surface profile of the protruding portion 110; wherein, in the length extending direction of the trunnion 310 corresponding to the outer ring 200, the upper and lower ends of the protruding portion 110 are recessed relative to the middle area of the protruding portion 110, so that the protruding portion 110 forms a first curved surface structure 1101 with the upper and lower ends recessed and the middle area protruding; and the upper and lower ends of the concave portion 210 protrude from the middle region of the concave portion 210, so that the concave portion 210 forms a second curved surface structure 2101 with the upper and lower ends protruding and the middle region being concave.
Specifically, in the present embodiment, by providing the corresponding protrusion 110 and the inner recess 210 between the housing 100 and the outer ring 200, so that the outer ring 200 and the housing 100 can relatively slide along the surface contour of the protrusion 110 on the housing 100, and the protruding portion 110 of the housing 100 is provided with a first curved structure 1101 having concave upper and lower ends and a protruding middle region, so that when the outer ring 200 slides relative to the housing 100, the first curved structure 1101 with concave upper and lower ends and convex middle area can provide a certain escape space for the outer ring 200, reduce the mutual squeezing friction between the outer ring 200 and the housing 110, therefore, the problem that when the universal joint is stressed in the prior art, large friction force is generated between the outer ring 200 and the shell 100, vibration and noise of a mechanical vibration system are increased, and the performance of a transmission system of the whole vehicle is poor is solved.
In addition, it should be understood that the first curved structure 1101, in which the upper and lower ends of the protruding portion 110 of the housing 100 are recessed and the middle area protrudes, may be an S-shaped curved structure as shown in fig. 1, and in the extending direction of the length of the trunnion 310 corresponding to the outer ring 200, the lengths of the recessed arcs and the recessed arc curves of the upper and lower ends of the protruding portion 110 are both smaller than the length of the protruding arc and the protruding arc curve of the middle area, but it should not be understood that the first curved structure 1101, in which the upper and lower ends of the protruding portion 110 of the housing 100 are recessed and the middle area protrudes, is only limited to the structure shown in this embodiment, and the lengths of the recessed arcs and the recessed arc curves of the upper and lower ends of the protruding portion 110 are both greater than the length of the protruding arc and the protruding arc curve of the middle area, or the lengths of the recessed arcs and the recessed arc curves of the upper and lower ends of the protruding portion 110 are equal to The radian of the concave arcs at the upper and lower ends of the first curved surface structure 1101, the length of the concave arc curve thereof, the length of the convex arc curve at the middle area, and the radian of the convex arc curve at the middle area, which are provided for the protruding portion 110 of the housing 100, can be selected arbitrarily, and only the shape of the concave portion 210 of the outer ring 200 needs to be adapted to the shape of the concave portion 210, so that the concave portion 210 of the outer ring 200 can provide a certain avoiding or sliding space, and the mutual extrusion friction between the outer ring 200 and the housing 110 can be reduced, thereby reducing the axial gradual force, and the embodiment does not specifically limit the structure of the first curved surface structure 1101, which is provided for the protruding portion 110 of the housing 100, and the concave arcs at the upper and lower ends and the middle area protrudes.
Similarly, for the shape and structure of the second curved surface structure 2101 with the concave portion 210 having the upper and lower ends protruding and the middle area being concave, refer to the above definition of the protruding portion 110, and are not repeated herein.
As shown in fig. 1, according to another specific embodiment of this embodiment, in the sliding type constant velocity universal joint 10 disclosed in the embodiment of this embodiment, the surfaces of the first curved surface structure 1101 and the second curved surface structure 2101 are both smooth curved surfaces, and the first curved surface structure 1101 and the second curved surface structure 2101 are in smooth transition contact.
Specifically, the surfaces of the first curved surface structure 1101 and the second curved surface structure 2101 are both smooth curved surfaces, and when the outer ring 200 deflects relative to the housing 100, the smooth curved surface structure facilitates the outer ring 200 to slide along the smooth curved surface relative to the housing 100, so as to reduce the extrusion friction between the outer ring 200 and the housing 100 when the outer ring 200 deflects relative to the housing 100 when receiving a deflection force, thereby effectively solving the problem that the universal joint in the prior art is stressed, a large friction force is generated between the outer ring 200 and the housing 100, the vibration and noise of a mechanical vibration system are increased, and the performance of a transmission system of the whole vehicle is poor.
In addition, the first curved surface structure 1101 is connected with the second curved surface structure 2101 in a smooth transition manner, so that the protruding portion 110 forms a smooth and smooth curve, the movement or relative sliding of the concave portion 210 along the smooth curve is facilitated, the friction extrusion between the concave portion 210 and the protruding portion 110 is reduced, the axial gradual force is reduced, and the problems that when the universal joint is stressed in the prior art, a large friction force is generated between the outer ring 200 and the shell 100, the vibration and noise of a mechanical vibration system are increased, and the performance of a transmission system of the whole vehicle is poor are effectively solved.
As shown in fig. 1, according to another specific embodiment of the present embodiment, the embodiment of the present embodiment discloses a plunging constant velocity joint 10 in which the projecting portion 110 and the concave portion 210 are in transition fit.
Specifically, the protruding portion 110 and the concave portion 210 are in transition fit, so that a slidable space or gap is left between the protruding portion 110 and the concave portion 210, and the concave portion 210 is allowed to slide relative to the protruding portion 110 along the surface profile of the protruding portion 110, so as to reduce the extrusion friction between the outer ring 200 provided with the concave portion 210 and the housing 100 when the outer ring is deflected relative to the housing 100 provided with the protruding portion 110 when the outer ring is subjected to a deflection force, thereby effectively solving the problem that when the universal joint is subjected to a force in the prior art, a large friction force is generated between the outer ring 200 and the housing 100, so that the vibration and noise of a mechanical vibration system are increased, and the performance of a transmission system of the finished automobile is poor.
As shown in fig. 1, according to another specific embodiment of the present embodiment, in the plunging type constant velocity universal joint 10 disclosed in the embodiment of the present embodiment, the plunging type constant velocity universal joint 10 further includes the needle rollers 400 and the inner ring 500 that are provided corresponding to the outer ring 200, the inner ring 500, the needle rollers 400, and the outer ring 200 are sequentially sleeved outside the trunnions 310 in the radial direction of the corresponding trunnions 310, and in the length extending direction of the trunnions 310 corresponding to the outer ring 200, the middle region of the housing top wall 120 protrudes toward the side away from the spider 300, so that the escape cavity 130 is formed between the end surface of the outer ring 200 and the corresponding housing top wall 120.
Specifically, the middle area of the top wall 120 of the housing protrudes toward the side away from the spider 300, so that an avoidance cavity 130 is formed between the end surface of the outer ring 200 and the corresponding top wall 120 of the housing, and the outer ring 200 is allowed to move or deflect in the avoidance cavity 130 formed on the top wall 120 of the housing, thereby reducing the contact friction and the extrusion between the top wall 120 of the housing and the end surface of the outer ring 200, further reducing the extrusion friction between the outer ring 200 and the housing 100 when deflecting relative to the housing 100 when the outer ring 200 is subjected to a deflection force, and effectively solving the problem that when the universal joint is stressed in the prior art, a large friction force is generated between the outer ring 200 and the housing 100, and the vibration and noise of a mechanical vibration system are increased, so that the performance of a transmission system of the whole vehicle is.
As shown in fig. 1, according to another specific embodiment of the present embodiment, the plunging type constant velocity universal joint 10 disclosed in the embodiment of the present embodiment has three trunnions 310 provided on the three-pronged joint 300, the three trunnions 310 are uniformly spaced along the circumferential direction of the three-pronged joint 300, and each trunnion 310 is provided with an inner ring 500, a needle roller 400, and an outer ring 200. The plunging type constant velocity universal joint 10 according to the present embodiment is a conventional tripod type constant velocity universal joint, and the tripod 300 is provided with three trunnions 310, the three trunnions 310 are uniformly spaced in the circumferential direction of the tripod 300, and each of the trunnions 310 is provided with the inner ring 500, the needle rollers 400, and the outer ring 200, which is a common structure of the conventional tripod type constant velocity universal joint, and therefore, it is not explained herein too much.
Example 2
The present embodiment also provides an automobile (schematic view not shown) including the sliding type constant velocity joint 10 of embodiment 1.
The automobile of the present embodiment is equipped with the plunging type constant velocity universal joint 10 of embodiment 1, the plunging type constant velocity universal joint 10 is connected to the transmission end of the automobile, and when the plunging type constant velocity universal joint 10 is subjected to a force, the vibration and noise of the mechanical vibration system caused by the plunging type constant velocity universal joint are small, so that the performance of the transmission system of the automobile is improved.
While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a more detailed description of the invention, and the specific embodiments thereof are not to be considered as limiting. Various changes in form and detail, including simple deductions or substitutions, may be made by those skilled in the art without departing from the spirit and scope of the invention.
Claims (6)
1. A sliding type constant velocity universal joint comprises a shell, a three-fork joint and an outer ring, wherein the three-fork joint is arranged in the shell and is provided with a trunnion which is arranged corresponding to the outer ring, the outer ring is sleeved outside the trunnion and is arranged in the shell, and the sliding type constant velocity universal joint is characterized in that a protruding part is arranged at the position, matched with the outer ring, of the inner side of the shell, an inner concave part which is matched with the protruding part is arranged on the outer wall surface of the outer ring, and the inner concave part can slide relative to the protruding part along the surface contour of the protruding part;
wherein, in a length extending direction of the trunnion corresponding to the outer ring,
the upper end and the lower end of the protruding part are recessed relative to the middle area of the protruding part, so that the protruding part forms a first curved surface structure with the upper end and the lower end recessed and the middle area protruding;
and the upper end and the lower end of the concave part are protruded relative to the middle area of the concave part, so that the concave part forms a second curved surface structure with the upper end and the lower end protruded and the middle area inwards concaved.
2. The sliding type constant velocity joint according to claim 1, wherein the surfaces of the first curved surface structure and the second curved surface structure are both smoothly curved, and the first curved surface structure and the second curved surface structure are smoothly transitionally connected.
3. The sliding type constant velocity joint according to claim 1, wherein a transition fit is provided between the projecting portion and the concave portion.
4. The plunging constant velocity joint according to claim 1, further comprising a needle roller and an inner ring provided in correspondence with the outer ring, the inner ring, the needle roller, and the outer ring being fitted in this order outside the trunnion in a radial direction of the corresponding trunnion, and a middle region of the housing top wall projecting toward a side away from the spider in a length extending direction of the trunnion in correspondence with the outer ring, so that an escape cavity is formed between an end surface of the outer ring and the corresponding housing top wall.
5. The plunging constant velocity joint according to claim 4, wherein three of the trunnions are provided on the spider, the three trunnions are provided at even intervals in the circumferential direction of the spider, and each of the trunnions is provided with the inner ring, the needle roller, and the outer ring.
6. An automobile characterized by comprising the sliding type constant velocity joint according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921710680.0U CN210715629U (en) | 2019-10-08 | 2019-10-08 | Sliding type constant velocity universal joint and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921710680.0U CN210715629U (en) | 2019-10-08 | 2019-10-08 | Sliding type constant velocity universal joint and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210715629U true CN210715629U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921710680.0U Active CN210715629U (en) | 2019-10-08 | 2019-10-08 | Sliding type constant velocity universal joint and automobile |
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| Country | Link |
|---|---|
| CN (1) | CN210715629U (en) |
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2019
- 2019-10-08 CN CN201921710680.0U patent/CN210715629U/en active Active
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