Tripod Axle

Abstract

This utility model discloses a tripod shaft, comprising a first section, a second section, a third section, a fourth section, a fifth section, and a sixth section connected sequentially. The first section is a cylindrical structure with a central connecting hole and flat sides. The second section is cylindrical, the third section is cylindrical with a larger diameter than the second section, the fourth section is cylindrical with a larger diameter than the third section, the fifth section is cylindrical with a larger diameter than the fourth section, and the sixth section is cylindrical with splines arranged on its outer side. The diameter of the sixth section is the same as that of the fifth section. This utility model features a reasonable and ingenious structural design. The gradually decreasing cylindrical structure ensures the connection length while using the step between the diameters to disperse the axial force generated by the tripod on the tripod shaft. The splines on the outer side of the sixth section increase the contact area without increasing the diameter, improving the friction between the sixth and sixth sections and ensuring concentricity with the tripod. Simultaneously, it disperses the radial force exerted by the tripod on the tripod shaft during rotation.

Description

Technical Field

[0001] This utility model relates to a tripod shaft, and more particularly to a tripod shaft for use in a drum washing machine. Background Technology

[0002] A triangular frame is installed on the back of a drum washing machine to strengthen the drum and drive its rotation. Generally, a triangular frame shaft is located in the center of the triangular frame, which is used to connect the bearing. The end of the triangular frame shaft that contacts the triangular frame is usually a smooth surface. After connecting with the triangular frame, the contact area is relatively small. To increase the contact area, the diameter of the shaft end is usually enlarged. However, the diameter of the connecting hole of the triangular frame must be enlarged accordingly, which will affect the strength of the triangular frame itself. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, this utility model provides a tripod shaft that can balance the relationship between the connection strength between the shaft and the tripod and the structural strength.

[0004] To achieve this objective, the structure adopted in this utility model is as follows: a tripod shaft, comprising a first section, a second section, a third section, a fourth section, a fifth section, and a sixth section connected in sequence. The first section is a cylindrical structure with a connecting hole in the center and flat surfaces on both sides. The second section is a cylinder, the third section is a cylinder with a diameter larger than that of the second section, the fourth section is a cylinder with a diameter larger than that of the third section, the fifth section is a cylinder with a diameter larger than that of the fourth section, and the sixth section is a cylinder with splines arranged on the outer side. The diameter of the sixth section is the same as that of the fifth section.

[0005] A first protrusion is provided on the outer side of the connection between the second and third segments.

[0006] A second protrusion is provided on the outer side of the connection between the fourth and fifth segments.

[0007] A groove is provided between the fifth and sixth segments.

[0008] Its beneficial effects are: the structure of this utility model is reasonable and ingenious. The gradually decreasing cylindrical structure ensures the connection length while using the steps between the diameter differences to disperse the axial force generated by the tripod on the tripod shaft. The sixth outer spline increases the contact area without increasing the diameter, improves the friction between it and the tripod, ensures the concentricity between it and the tripod, and disperses the radial force of the tripod shaft during the rotation of the tripod. Attached Figure Description

[0009] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0010] Figure 1 This is a three-dimensional structural diagram of the present invention. Detailed Implementation

[0011] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0012] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0013] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components; a fixed connection can be welding or adhesive bonding. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0014] like Figure 1 The tripod shaft shown includes segments 1, 4, 6, 7, 9, and 10 connected sequentially. Segment 1 is a cylindrical structure with a connecting hole 2 at the center of the top and symmetrically arranged planes 3 on both sides, perpendicular to the top surface of segment 4. Segment 4 is a cylinder with a chamfered top edge. Segment 6 is a cylinder with a larger diameter than segment 4, and its top edge is also chamfered. Segment 7 is a cylinder with a larger diameter than segment 6, and its top edge is also chamfered. Segment 9 is a cylinder with a larger diameter than segment 7, and its top edge is also chamfered. Segment 10 is a cylinder with splines arranged on its outer side, and its diameter is the same as that of segment 9.

[0015] The gradually decreasing cylindrical structure ensures the connection length while using the steps between the diameter differences to disperse the axial force generated by the tripod on the tripod shaft. The outer spline of the sixth segment 10 increases the contact area without increasing the diameter, improving the friction between it and the tripod, ensuring the concentricity between it and the tripod, and dispersing the radial force of the tripod on the tripod shaft during rotation.

[0016] A first protrusion 5 is provided on the outer side of the connection between the second segment 4 and the third segment 6. The diameter of the first protrusion 5 is larger than the diameter of the second segment 4 but smaller than the diameter of the third segment 6, which strengthens the connection between the second segment 4 and the third segment 6.

[0017] A second protrusion 8 is provided on the outer side of the connection between the fourth segment 7 and the fifth segment 9. The diameter of the second protrusion 8 is larger than the diameter of the fourth segment 7 but smaller than the diameter of the fifth segment 9, thereby strengthening the connection between the fourth segment 7 and the fifth segment 9.

[0018] A groove 11 is provided between the fifth segment 9 and the sixth segment 10. The longitudinal section of the groove 11 is semi-circular. When connected to the tripod, the groove 11 fits into the tripod and is sealed to prevent the sixth segment 10 from being corroded by contact with the outside world, thus affecting the connection strength.

[0019] Based on the above description and inspired by this utility model, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A tripod shaft, characterized in that, It includes the first segment (1), the second segment (4), the third segment (6), the fourth segment (7), the fifth segment (9), and the sixth segment (10) connected in sequence. The first segment (1) is a cylindrical structure with a connecting hole (2) in the center and flat surfaces on both sides. The second segment (4) is a cylinder, the third segment (6) is a cylinder with a diameter greater than that of the second segment (4), the fourth segment (7) is a cylinder with a diameter greater than that of the third segment (6), the fifth segment (9) is a cylinder with a diameter greater than that of the fourth segment (7), and the sixth segment (10) is a cylinder with splines arranged on the outer side. The diameter of the sixth segment (10) is the same as that of the fifth segment (9).

2. The tripod shaft according to claim 1, characterized in that, A first protrusion (5) is provided on the outer side of the connection between the second segment (4) and the third segment (6).

3. The tripod shaft according to claim 1, characterized in that, A second protrusion (8) is provided on the outer side of the connection between the fourth segment (7) and the fifth segment (9).

4. The tripod shaft according to claim 1, characterized in that, A groove (11) is provided between the fifth segment (9) and the sixth segment (10).

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