An assembly with channels intersecting each other axially

Abstract

An assembly in which channels intersect each other axially. The main purpose is to solve the problem that the channels of conventional transmission shaft assemblies are straight and rolling parts are easy to fall out. The characteristic is that the channels include a first channel (41) and a second channel (42) which are alternately distributed in sequence, the first channel gradually rises along the direction from the inside to the outside of the shell, and the second channel gradually decreases along the direction from the outside to the inside of the shell. The utility model provides an assembly in which channels intersect each other axially, and the channels have a self-locking function to prevent falling out, without the need to add rivets, retaining springs and other processes in the traditional process.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to an assembly in which channels are axially intersected with each other. Background Art

[0002] The drive shaft is an important component for transmitting power in the automobile transmission system. Its function is to transfer the power of the engine to the wheels together with the gearbox and drive axle, so that the car can generate driving force.

[0003] The groove of the conventional transmission shaft assembly is straight, and the rolling element is easy to come out. Utility Model Content

[0004] In order to overcome the shortcomings of the background technology, the utility model provides an assembly with mutually axially intersecting channels, mainly solving the problem that the channels of conventional transmission shaft assemblies are straight and rolling elements are easy to fall out.

[0005] The technical solution of the utility model is:

[0006] An assembly with mutually axially intersecting channels comprises an intermediate shaft, one end of the intermediate shaft is provided with a first universal joint, and the other end is provided with a second universal joint, the first universal joint comprises a housing, a retaining frame is provided in the housing, a portion of the intermediate shaft extending into the housing is provided with a star sleeve, a plurality of rolling elements are provided on the retaining frame, a plurality of channels are provided on the inner wall of the housing, the rolling elements and the channels are rollingly matched, the channels comprise a first channel and a second channel which are alternately distributed in sequence,

[0007] The first channel gradually rises from the inside to the outside of the shell.

[0008] The second channel gradually decreases from the outside to the inside of the shell.

[0009] The star-shaped sleeve is provided with a plurality of ball paths, the ball paths rollingly cooperate with the rolling element, and the ball paths include a first ball path and a second ball path which are alternately distributed in sequence.

[0010] The first ball path gradually rises from the inside to the outside of the shell.

[0011] The second ball path gradually decreases from the outside to the inside of the shell.

[0012] One of the rolling elements is partially disposed in the first channel and partially disposed in the first ball path.

[0013] The first universal joint and the second universal joint are both sliding universal joints.

[0014] There are eight channels.

[0015] It also includes a dust cover, one end of which is connected to the intermediate shaft, and the other end of which is connected to the circumferential outer wall of the shell.

[0016] The dust cover is connected to the intermediate shaft through a clamp.

[0017] The beneficial effects of the utility model are as follows: the utility model provides an assembly in which channels are mutually axially crossed, and the channels have a self-locking function to prevent slipping out, without the need to add rivet points, retaining springs and other processes in the traditional process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0019] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0020] Figure 3 It is a half-section schematic diagram of an embodiment of the utility model.

[0021] Figure 4 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0022] Figure 5 A half-section schematic diagram of an embodiment of the utility model DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings: As shown in the figure, an assembly with mutually axially intersecting channels includes an intermediate shaft 1, a first universal joint 2 is provided at one end of the intermediate shaft, and a second universal joint 3 is provided at the other end, the first universal joint includes a housing 21, a retainer 22 is provided in the housing, a portion of the intermediate shaft extending into the housing is provided with a star sleeve 23, a plurality of rolling elements 221 are provided on the retainer, a plurality of channels are provided on the inner wall of the housing, the rolling elements and the channels are rollingly matched, the channels include first channels 41 and second channels 42 that are distributed alternately in sequence, the first channels are gradually raised along the direction from the inside to the outside of the housing, and the second channels are gradually reduced along the direction from the outside to the inside of the housing. The star sleeve is provided with a plurality of ballways, the ballways are rollingly matched with the rolling elements, the ballways include first ballways 51 and second ballways 52 that are distributed alternately in sequence, the first ballway is gradually raised along the direction from the inside to the outside of the housing, and the second ballway is gradually reduced along the direction from the outside to the inside of the housing. The alternating distribution mentioned here means that the first channel, the second channel, the first channel, and the second channel are cyclically alternating in this order. The same applies to the first ball channel and the second ball channel. Here, the direction from the inside to the outside of the shell is mentioned here. First, the channel is arranged on the inner wall of the shell, which includes the interior and the opening. The direction from the inside to the outside here refers to the direction from the inside to the opening, that is, the direction from the inside to the outside gradually rises, which means that the first channel extends from the inside to the opening from low to high. The second channel is the opposite. The first ball channel is the same as the first channel, but the difference is that its rising direction is gradually close to the first channel, which plays a good locking role. As an optional option, the first channel can be composed of at least two tangent arc surfaces, refer to Figure 3 The two end arcs R1 and R2 in the first fairway are composed of arcs R3 and R4. R1 is equal to R4, R2 is equal to R3, and the same is true in Figure 5 In the figure, R5 is equal to R8, and R6 is equal to R7.

[0024] In this embodiment, as shown in the figure, one of the rolling elements is partially disposed in the first channel and partially disposed in the first ball track. Of course, there must be at least one rolling element partially disposed in the second channel and partially disposed in the second ball track.

[0025] In this embodiment, as shown in the figure, the first universal joint and the second universal joint are both sliding universal joints.

[0026] In this embodiment, as shown in the figure, the grooves are provided with eight. Compared with the six-groove structure assembly, the loading load of each groove can be effectively reduced, thereby reducing wear failure and improving the fatigue life of the product;

[0027] In this embodiment, as shown in the figure, a dust cover 6 is also included, one end of which is connected to the intermediate shaft, and the other end is connected to the circumferential outer wall of the housing, so as to prevent dust and increase the service life.

[0028] In this embodiment, as shown in the figure, the dust cover is connected to the intermediate shaft through a clamp, which is convenient for assembly and disassembly.

[0029] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. An assembly with mutually axially intersecting grooves, comprising an intermediate shaft (1), one end of the intermediate shaft being provided with a first universal joint (2), and the other end being provided with a second universal joint (3), the first universal joint comprising a housing (21), a retaining frame (22) being provided in the housing, a portion of the intermediate shaft extending into the housing being provided with a star-shaped sleeve (23), a plurality of rolling elements (221) being provided on the retaining frame, a plurality of grooves being provided on the inner wall of the housing, the rolling elements rollingly cooperating with the grooves, characterized in that: The channel comprises a first channel (41) and a second channel (42) which are alternately distributed in sequence. The first channel gradually rises from the inside to the outside of the shell. The second channel gradually decreases from the outside to the inside of the shell.

2. An assembly with mutually axially intersecting channels according to claim 1, characterized in that: The star-shaped sleeve is provided with a plurality of ball paths, the ball paths rollingly cooperate with the rolling element, the ball paths comprising a first ball path (51) and a second ball path (52) which are alternately distributed in sequence. The first ball path gradually rises from the inside to the outside of the shell. The second ball path gradually decreases from the outside to the inside of the shell.

3. An assembly with mutually axially intersecting channels according to claim 2, characterized in that: One of the rolling elements is partially disposed in the first channel and partially disposed in the first ball path.

4. An assembly with mutually axially intersecting channels according to claim 3, characterized in that: The first universal joint and the second universal joint are both sliding universal joints.

5. An assembly with mutually axially intersecting channels according to claim 4, characterized in that: There are eight channels.

6. An assembly with mutually axially intersecting channels according to claim 5, characterized in that: It also includes a dust cover (6), one end of which is connected to the intermediate shaft, and the other end of which is connected to the circumferential outer wall of the shell.

7. An assembly with mutually axially intersecting channels according to claim 6, characterized in that: The dust cover is connected to the intermediate shaft through a clamp.

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