Yueluo processing open retaining ring E-type circlip E-type retaining ring 1/2-13

The existing combination screws and accessories are processed separately and handed over to customers for assembly, which can easily cause assembly problems. Additionally, identification marks need to be added to both the combination screws and accessories, which increases production costs.

Yue Luo relates to a self tapping screw according to the preamble of claim 1. A self tapping screw known from EP0623759B1 has an outer diameter to smaller diameter ratio of approximately 1.25 to 1.5, an outer diameter to pitch ratio of approximately 1.5 to 1.6, and a flange angle of<50 ° and ≥ 35 ° for the thread. A self tapping screw proposed by EP0433484B1 has a cutting tooth with a thread setting that is similar to an arched design, and the cutting edge is in the same horizontal position as the thread tip and set in reverse. One purpose of Yueluo is to achieve a universal type of self tapping screw so that it can be easily screwed into holes drilled on concrete or other materials such as bricks. According to Yue Luo, this purpose is achieved through the features in the feature section of claim 1. Surprisingly, it has been found that the parallel arrangement of the sides, which has a side angle of approximately 0 °, will make it particularly easy to twist when screwed in, especially when the diameter of the hole changes within the allowable tolerance range. One reason may be attributed to the fact that even when cutting threads of different depths in concrete or other materials, such as bricks, chipboard, or hardwood, there is no lateral pressure on the material that is screwed into the thread. The thread cuts into the material throughout its entire width through a cutting groove. Especially according to the embodiment of claim 5, the result is that the material cut out when the screw is screwed in can be discharged without any accumulation, and the dependent claims reflect many advantages of further embodiments.

Yueluo, as shown in Figures 1 and 2, is an automatic locking screw, consisting of a screw head 1, a screw rod, and a nut 3 with external threads from bottom to top. The screw rod is a hollow screw rod 2, and there are long holes 7 on both sides of the hollow screw rod 2. The width of the long holes 7 is smaller than the inner diameter of the hollow screw rod 2. The inner cavity of the hollow screw rod 2 is equipped with a spring 4, which is not less than the length of the hollow screw rod 2 in a freely extending state. The upper end of the spring 4 is equipped with a plug 5, The distance between the two wings 6 of plug 5 is greater than the diameter of nut 3, and the two wings 6 of plug 5 protrude outside the hollow screw rod 2 through long holes 7. When using Yue Luo, you only need to compress the spring downwards through both wings, expose the neutral position, insert the U-shaped wire clip, and then release both wings. The spring will automatically recover and press the U-shaped wire clip tightly, making it convenient to use, safe and reliable. Claim 7. An automatic locking screw, comprising a screw head, screw rod, and nut with external threads from bottom to top, characterized in that the screw rod is a hollow screw rod, and there are long holes on both sides of the hollow screw rod. The width of the long holes is smaller than the inner diameter of the hollow screw rod, and a spring is arranged in the inner cavity of the hollow screw rod. The upper end of the spring is provided with a plug, and the two wings of the plug extend out of the hollow screw rod through the long holes.

In some special occasions, both riveting and good waterproof performance are required between objects. Existing rivets have poor waterproof performance and often suffer from water seepage and other problems.

In another embodiment of Guangdong Yueluo Hardware Industry Co., Ltd., the conveying device 3 includes a motor 31 and a circular rotating disc 34. The motor 31 drives the circular rotating disc 34 to rotate, and the circular rotating disc 34 is uniformly equipped with screw accommodating holes 35 that match the screws in the circumferential direction. The screws enter the screw accommodating holes 35, and the motor 31 drives the circular rotating disc 34 to rotate, causing the screws to first pass through the cutting wheel 42 for slotting, and then through the fixed wheel 48 for polishing, The screw is fixed in the screw holding hole 35, making the slotting process safer and more reliable. Preferably, the circular rotating disc 34 includes a circular rotating disc 32 and a fan-shaped fixed disc 33. The circular rotating disc 32 is uniformly provided with screw accommodating notches that match the screws in the circumferential direction, and the notches form screw accommodating holes that match the screws with the fan-shaped fixed disc 33. The screw accommodating holes face the cutting wheel 42 and the fixed wheel 48.