Drive bolt structure

Abstract

The utility model discloses a kind of transmission bolt structures, including two symmetrical structures block, each structure block is steel block, structure block outer side is provided with thread, inner side top is wide arc-shaped notch, wide arc-shaped notch below is connected conical notch, conical notch below is connected narrow arc-shaped notch, structure block two side faces are plane, structure block top is provided with limiting recess.The utility model structure design is reasonable ingenious, two structure blocks can be symmetrically arranged on connecting piece of different diameters, the limiting recess of top limits the position of structure block, avoid rotating process structure block not to follow, the inner side many structure recesses can increase contact area, improve friction, the design of structure block guarantees the thickness of thread part, replaces the strength of connecting piece, avoid thread cracking, overall can use metal powder injection molding, processing is convenient and low in cost.

Description

Technical Field

[0001] This utility model relates to a transmission bolt structure. Background Technology

[0002] For irregular or non-standard threaded holes, ordinary standard bolts cannot be used. Traditional expansion bolts, due to the need for a certain amount of deformation, have low overall structural strength and are prone to breakage and loosening. Furthermore, their processing requires steel forging followed by machining of the external thread, resulting in low processing efficiency and high cost. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, this utility model provides a transmission bolt structure that is easy to process, low in cost, widely applicable, and has high strength.

[0004] To achieve this objective, the structure adopted by this utility model is: a transmission bolt structure, comprising two symmetrically arranged structural blocks, each of which is a steel block. The outer side of the structural block is provided with threads, the top of the inner side is a wide arc-shaped notch, a conical notch is connected below the wide arc-shaped notch, and a narrow arc-shaped notch is connected below the conical notch. The two sides of the structural block are flat, and a limiting notch is provided at the top of the structural block.

[0005] The threaded edge forms a 30° angle with the plane.

[0006] The steel block is an iron-nickel alloy.

[0007] Its beneficial effects are: the structure of this utility model is reasonable and ingenious. The two structural blocks can be symmetrically set on the connectors of different diameters. The limiting notch at the top limits the position of the structural blocks and prevents the structural blocks from not rotating during rotation. The multiple structural notches on the inner side can increase the contact area and improve the friction. The design of the structural blocks ensures the thickness of the threaded part, replaces the strength of the connector, and avoids the thread cracking. The whole can be made by metal powder injection molding, which is convenient to process and has low cost. Attached Figure Description

[0008] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0009] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0010] Figure 2 This is a three-dimensional structural diagram of the structural block. 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 transmission bolt structure shown includes two symmetrically arranged structural blocks 1, as follows: Figure 2 As shown, each structural block 1 is a steel block. The outer surface of structural block 1 is provided with threads 11, which are trapezoidal arc segments arranged from top to bottom. The top of the inner surface of structural block 1 has a wide arc-shaped recess 13, below which is a conical recess 14, and below which is a narrow arc-shaped recess 15. Two structural blocks 1 are symmetrically arranged on the surface of the connecting parts. The gradually narrowing contact surface of the inner surface increases the contact area with the connecting parts and accommodates connecting parts of different specifications. The two sides of structural block 1 are flat surfaces 16. The top of structural block 1 is provided with a limiting recess 12. Threads 11 and wide arc-shaped recesses 13 pass through both ends of the limiting recess 12. The connecting parts engage with the limiting recesses 12 locally, allowing structural block 1 to rotate synchronously with the connecting parts.

[0015] The edge of the thread 11 forms a 30° angle with the plane 16.

[0016] The steel block is an iron-nickel alloy, comprising 1.5–2.5% Ni, 0.2–0.5% Mo, 0.4–0.6% C, and the remainder being Fe. The metal powder is integrally formed by injection molding and vacuum sintering, resulting in high structural strength, convenient processing, low cost, and the ability to meet the requirement of high pitch consistency.

[0017] 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 transmission bolt structure, comprising two symmetrically arranged structural blocks (1), characterized in that, Each structural block (1) is a steel block. The outer side of the structural block (1) is provided with threads (11), the top of the inner side is a wide arc-shaped notch (13), the bottom of the wide arc-shaped notch (13) is connected to a conical notch (14), the bottom of the conical notch (14) is connected to a narrow arc-shaped notch (15), the two sides of the structural block (1) are flat (16), and the top of the structural block is provided with a limiting notch (12).

2. The transmission bolt structure according to claim 1, characterized in that, The edge of the thread (11) forms a 30° angle with the plane (16).

3. The transmission bolt structure according to claim 1, characterized in that, The steel block is an iron-nickel alloy.

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