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Pin-type fastener

A type of fastener and pin technology, applied in the direction of threaded fasteners, connecting components, nuts, etc., can solve the problems of complex mold assembly and maintenance, limited space, and difficult fixing, reducing the fit tightness and reducing the fixing space. , The effect of reducing the difficulty of assembly and disassembly

Inactive Publication Date: 2016-09-21
张若玮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The inner cavities of slightly complex molds are combined, and the space is very limited, and it is difficult to fix them with pins and bolts
At the same time, in order to maintain the stability of the pin, it is often necessary to increase the amount of interference, so that the assembly and maintenance of the mold will become very complicated and troublesome.

Method used

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  • Pin-type fastener

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] As shown in the figure, the pin shaft in the pin nut 5 matches the pin holes in the part A1 and the part B2, and there is only a small amount of interference between them. The gap adjusting washer 6 is enclosed within the pin nut 5, and the quantity of the gap adjusting washer 6 depends on the increase or decrease of the front end space, so that the front end of the pin nut 5 is lower than the parts surface and is convenient for fastening. The flat washer 4 is arranged on the top of the pin hole of the part A1 or the part B2, and the locking screw 3 passes through the flat washer 4 and is screwed in the screw hole of the pin nut 5 to make it fastened. The tail end of the pin nut 5 is an inner hexagon or an outer hexagon head, which is convenient for its fixing back assembly and disassembly.

[0017] The structure of the present invention is not limited to the forms described in the embodiments, and further developments made by those skilled in the art according to the p...

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PUM

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Abstract

The invention provides a pin-type fastener. The pin-type fastener integrates the functions of a pin and a bolt, and is wide in application range and quite convenient to install and detach. The pin-type fastener is characterized in that a pin shaft in a pin-type nut is matched with pin holes in a part A and a part B; gap adjustment gaskets sleeve in the pin-type nut; a flat gasket is arranged on the upper part of the pin hole of the part A or the part B; and a locking screw penetrates through the flat gasket and is screwed in a screw hole of the pin-type nut.

Description

technical field [0001] The present invention relates to a fastener. Background technique [0002] Pins limit the degree of freedom of parts. It can be divided into cylindrical pins, conical pins and special-shaped pins. The pins are detachably connected by connecting parts, which can transmit small loads. Sometimes they are also used as insurance parts for overload shearing. ; Another purpose of the pin is to fix the mutual position of the two parts as an important aid in combined processing and assembly. The cylindrical pin is fixed in the hole by a small amount of interference. It has high requirements on the size, shape and surface roughness of the pin hole. The pin hole must be reamed before assembly. Usually, the two holes of the connected parts should be drilled and reamed at the same time. [0003] Pins are most widely used in molds, including stamping dies, injection molds, and more. Their precision requirements are particularly high, and if the formwork is fixed o...

Claims

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Application Information

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IPC IPC(8): F16B37/00
CPCF16B37/00
Inventor 张若玮
Owner 张若玮