Disc spring screw

Abstract

The utility model discloses a disc spring screw which comprises a screw rod, the upper end portion of the screw rod is provided with a round fastening cap, the lower end portion of the screw rod is provided with a first-level thread, the upper end of the first-level thread is provided with a second-level thread, and a plurality of round disc spring pieces are arranged between the second-level thread and the fastening cap in a sleeved mode. According to the utility model, the plurality of circular disc spring sheets are sleeved between the secondary threads and the fastening cap, when a product is fastened by the screw, elastic force exists among the disc spring sheets, and all the elastic force acts on the upper end of the fastening cap, so that the fastening cap has outward pressing force, and the screw is good in fastening effect and not easy to loosen; therefore, the utility model has the advantages of novel design, simple structure, good fastening effect and difficulty in loosening due to the adoption of multiple layers of disc spring gaskets.

Description

Technical Field

[0001] This utility model relates to the technical field of screws, and more particularly to a disc spring screw. Background Technology

[0002] Screws are cylindrical threaded fasteners used with nuts. They are a type of mechanical part used for fastening connections and are extremely widely used in various industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, mold making, heat dissipation, hydraulics, etc. Various types of fasteners can be found on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, meters, and supplies. They are the most widely used basic mechanical components.

[0003] After the screw is tightened, it may loosen due to various factors such as product vibration, thus failing to achieve its tightening effect. Therefore, a disc spring screw was designed. Utility Model Content

[0004] The purpose of this utility model is to provide a disc spring screw that addresses the shortcomings of existing technologies. This disc spring screw has a novel design and simple structure, uses multi-layer disc spring washers, has a good fastening effect, and is not easy to loosen.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] A disc spring screw includes a screw rod, with a round fastening cap at the upper end of the screw rod, a primary thread at the lower end of the screw rod, a secondary thread at the upper end of the primary thread, and a plurality of round disc springs fitted between the secondary thread and the fastening cap.

[0007] The upper end of the fastening cap is provided with a concave plum blossom locking groove.

[0008] The diameter of the primary thread is smaller than the diameter of the secondary thread.

[0009] A circular washer is installed between the disc spring and the secondary thread.

[0010] The beneficial effects of this utility model are as follows: The disc spring screw of this utility model includes a screw rod, with a circular fastening cap at the upper end of the screw rod, a primary thread at the lower end of the screw rod, a secondary thread at the upper end of the primary thread, and several circular disc springs fitted between the secondary thread and the fastening cap. This utility model, by fitting several circular disc springs between the secondary thread and the fastening cap, creates elasticity between the disc springs when the screw is tightened. All the elasticity acts on the upper end of the fastening cap, giving the fastening cap an outward pressing force, thus ensuring a good screw tightening effect and preventing loosening. Therefore, this utility model has the advantages of novel design, simple structure, multi-layer disc spring washers, good tightening and pressure resistance, and resistance to loosening. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] exist Figure 1 This includes:

[0014] 1 - Screw 11 - Fastening Cap

[0015] 111 - Plum blossom locking groove; 12 - First-grade thread

[0016] 13 - Secondary thread; 14 - Disc spring.

[0017] 15 - Gasket. Detailed Implementation

[0018] The present invention will now be described in conjunction with specific embodiments.

[0019] like Figure 1 As shown, a disc spring screw includes a screw 1, and a round fastening cap 11 is provided at the upper end of the screw 1. A primary thread 12 is provided at the lower end of the screw 1, and a secondary thread 13 is provided at the upper end of the primary thread 12. Several round disc springs 14 are fitted between the secondary thread 13 and the fastening cap 11.

[0020] Furthermore, the upper end of the fastening cap 11 is provided with a concave plum blossom locking groove 111, which requires a professional tool to tighten.

[0021] In a preferred embodiment, the diameter of the primary thread 12 is smaller than the diameter of the secondary thread 13.

[0022] Furthermore, a circular washer 15 is installed between the disc spring 14 and the secondary thread 13.

[0023] To provide a further explanation, this utility model incorporates several circular disc springs 14 fitted between the secondary thread 13 and the fastening cap 11. When the screw is tightened, there is elasticity between the disc springs 14, and all the elasticity acts on the upper end of the fastening cap 11, giving the fastening cap 11 an outward pressing force. This results in a good screw tightening effect and prevents it from loosening. Therefore, this utility model has the advantages of novel design, simple structure, multi-layer disc spring washers, good tightening effect, and prevents it from loosening.

[0024] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A disc spring screw, characterized by: The screw (1) is provided with a round fastening cap (11) at the upper end, a primary thread (12) at the lower end, a secondary thread (13) at the upper end of the primary thread (12), and a plurality of round disc spring pieces (14) sleeved between the fastening cap (11) and the secondary thread (13).

2. A disc spring screw according to claim 1, characterized in that: The upper end of the fastening cap (11) is provided with a concave quincunx locking groove (111).

3. The disc spring screw according to claim 1, characterized in that: The diameter of the primary thread (12) is smaller than that of the secondary thread (13).

4. The disc spring screw of claim 1, wherein: The disc spring piece (14) is provided with a round gasket (15) between the disc spring piece (14) and the secondary thread (13).

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