Eccentric wheel structure

Abstract

The utility model discloses an eccentric wheel structure which comprises an upper ring body and a lower ring body, the upper ring body is arranged above the lower ring body, a connecting hole is formed in the center of the upper ring body and the center of the lower ring body, an outer ring on one side of the upper ring body is a perfect circular arc, an outer ring on the other side of the upper ring body is a non-perfect circular arc, and a semicircular disc-shaped protruding block corresponding to the non-perfect circular arc is arranged on the lower ring body. A plurality of grooves are formed in the connecting hole; the whole body is integrally formed through metal powder sintering. The eccentric wheel is reasonable and ingenious in structural design, the integrally-formed structure is high in structural strength, the contact face of the connecting part is increased due to superposition of the upper ring body and the lower ring body, the eccentric wheel is not prone to deformation, and the performance of the eccentric wheel is improved.

Description

Technical Field

[0001] This utility model relates to an eccentric wheel structure, and more particularly to an eccentric wheel structure for use in an electric car angle adjuster. Background Technology

[0002] With the continuous development of the automotive industry and the increasing diversification of consumer demands, electric car seat adjusters have become an important component of modern car seats. Existing electric adjusters use a simple eccentric wheel structure, which has low structural strength and is prone to deformation, affecting the adjuster's usability. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, this utility model provides an eccentric wheel structure with high structural strength and resistance to deformation.

[0004] To achieve this objective, the structure adopted in this utility model is: an eccentric wheel structure, including an upper ring body and a lower ring body. The upper ring body is positioned above the lower ring body, and a connecting hole is provided at the center of the upper and lower ring bodies. One side of the outer ring of the upper ring body is a perfectly circular arc, and the other side of the outer ring is a non-circular arc. A semi-circular protrusion is provided on the lower ring body corresponding to the non-circular arc. Multiple grooves are provided in the connecting hole.

[0005] The non-circular arc includes a central segment, a protruding segment, and a connecting segment. Two protruding segments are symmetrically arranged at both ends of the central segment. The central segment and the protruding segments are arc-shaped. The diameter of the protruding segment is smaller than the diameter of the central segment. One end of the protruding segment is connected to the central segment, and the other end is connected to the circular arc through the connecting segment, which is a planar segment.

[0006] The semi-circular protrusion has an oblong limiting hole in the center.

[0007] The connecting hole has a groove at one end near the circular arc and at least two grooves at the other end near the circular arc.

[0008] The upper and lower rings are integrally formed by sintering metal powder.

[0009] Its beneficial effects are: the structure of this utility model is reasonable and ingenious, the one-piece molded structure has high strength, the superposition of the upper and lower rings increases the contact surface of the connecting part, making the eccentric wheel less prone to deformation and improving the performance of the eccentric wheel. Attached Figure Description

[0010] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is a front view structural diagram of this utility model. Detailed Implementation

[0013] 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.

[0014] 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.

[0015] 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.

[0016] like Figure 1 , Figure 2 The eccentric wheel structure shown includes an upper ring body 1 and a lower ring body 2. The upper ring body 1 is positioned above the lower ring body 2. A connecting hole 3 is located at the center of the upper ring body 1 and the lower ring body 2. The connecting hole 3 serves as the mounting connection hole for the eccentric wheel structure. During rotational connection, the pressure is evenly distributed onto the connecting hole 3. Due to the large contact area, the entire structure is not easily deformed. One side of the outer ring of the upper ring body 1 is a perfectly circular arc, while the other side is a non-circular arc. The non-circular arc side is the eccentric portion. A semi-circular protrusion 21 is provided on the lower ring body 2 corresponding to the non-circular arc. The semi-circular protrusion 21 can serve as a second eccentric portion, simultaneously reinforcing the eccentric portion of the upper ring body 1. Multiple grooves 5 are provided in the connecting hole 3, which are used for spline connection with the connecting shaft.

[0017] The non-circular arc includes a central segment 13, a protruding segment 12, and a connecting segment 11. The two protruding segments 12 are symmetrically arranged at both ends of the central segment 13. The central segment 13 and the protruding segment 12 are arc-shaped. The diameter of the protruding segment 12 is smaller than the diameter of the central segment 13. One end of the protruding segment 12 is connected to the central segment 13, and the other end is connected to the circular arc through the connecting segment 11. The connecting segment 11 is a planar segment with a smooth overall transition. It can be used as an eccentric wheel in an electric angle adjuster to make the adjustment smoother.

[0018] The semi-circular protrusion 21 has an oblong limiting hole 4 in the center.

[0019] A groove 5 is provided at one end of the connecting hole 3 near the circular arc, and at least two grooves 5 are provided at the other end near the circular arc.

[0020] The upper and lower rings are integrally formed by sintering metal powder, which includes 1-2% Ni, 0-2% Cu, 0.3-0.6% C, and the remainder Fe. The integrally formed structure can improve the overall strength and further ensure the performance of the eccentric wheel.

[0021] 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. An eccentric wheel structure, comprising an upper ring body (1) and a lower ring body (2), characterized in that, The upper ring (1) is positioned above the lower ring (2). A connecting hole (3) is provided at the center of the upper ring (1) and the lower ring (2). The outer ring on one side of the upper ring (1) is a circular arc, and the outer ring on the other side is a non-circular arc. A semi-circular protrusion (21) is provided on the lower ring (2) corresponding to the non-circular arc. Multiple grooves (5) are provided in the connecting hole (3).

2. The eccentric wheel structure according to claim 1, characterized in that, The non-circular arc includes a central segment (13), a protruding segment (12), and a connecting segment (11). The two protruding segments (12) are symmetrically arranged at both ends of the central segment (13). The central segment (13) and the protruding segment (12) are arc-shaped. The diameter of the protruding segment (12) is smaller than the diameter of the central segment (13). One end of the protruding segment (12) is connected to the central segment (13), and the other end is connected to the circular arc through the connecting segment (11). The connecting segment (11) is a planar segment.

3. The eccentric wheel structure according to claim 1, characterized in that, The semi-circular protrusion (21) has an oblong limiting hole (4) in the center.

4. The eccentric wheel structure according to claim 1, characterized in that, The connecting hole (3) has a groove (5) at one end near the circular arc, and at least two grooves (5) at the other end near the circular arc.

5. The eccentric wheel structure according to any one of claims 1-4, characterized in that, The upper ring (1) and the lower ring (2) are integrally formed by sintering metal powder.

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