TWI476317B - Increased strength and load forging pulley - Google Patents

Description

Enhanced strength and load forging pulley device

The invention relates to a pulley improvement device, in particular to a forged pulley device which can eliminate the rivet marks on the surface of the pulley panel and can improve its strength and load.

The conventional pulley device has been used in various industries for many years. Because of its compact structure, easy operation, long service life and wide application range, it has been widely favored by users.

The pulley device has various types, wherein the pulley is mainly used in the aluminum door and window, the sliding door and various objects moving along the fixed rail. The conventional pulley structure is shown in the perspective view of the conventional pulley structure in the sixth figure. The pulley base (12) and the pulley panel (11), which are provided with the runner (2), are combined with each other, and are separated by a separate screw or a rivet (112) extending from the back of the pulley panel (11). The pulley base (12) is riveted to the pulley panel (10) by punching.

The pulley base (12) of the above-mentioned stern type pulley is combined with the pulley panel (11), and is provided with perforations corresponding to the two sides of the pulley base (12) and the pulley panel (11), and is punched or screwed by rivets. The screw is used to combine the two, but this method will leave the rivet head or the screw head trace on the pulley panel (11). In order to solve the lack of appearance of the residue, the inventor has proposed a good improvement plan. They were also awarded the new patents of the Republic of China No. 180908 and M421323, the new patent of China No. ZL201120314833.7, the US Patent No. 6,478,286 and the United States. Patent Application No. 13/223,216.

However, the above-mentioned rivet-type pulley with the rivet combined with the pulley base (12) and the pulley panel (11) is formed by the combination of the pulley base (12) and the pulley panel (11), so that the processing procedure is cumbersome and The strength is obviously poor, and the load is all rivet load. Generally, the pulley of the riveting structure via the rivet is easily damaged by the rivet breaking or falling off.

In order to further overcome the problems of the strength and load of the conventional stern-type pulley, the present invention proposes a more sophisticated solution in which the pulley base and the pulley panel are integrally formed by hot forging, in addition to eliminating the pulley. The rivet marks on the surface of the panel are made, and the ruggedness and load bearing capacity are obviously better than those of the conventional riveted combination.

The pulley device provided by the invention mainly adopts the method that the pulley base and the pulley panel are integrally formed into a wheel frame by hot forging, so that the rigidity and the bearing load are obviously better than the conventional riveting pulley after being added to the pulley, and the integrated type thereof The wheel frame has good strength characteristics and its load is borne by the axle having a diameter larger than the rivet.

As we know, the load factor of the traditional ㄇ type pulley is obtained by the Shear Force formula of the load. [Shaft seat section (mm) x rivet radius (mm) x 3.14 x material strength coefficient = load (kg )], the rivet is made of medium carbon steel with a material strength of 5.7, converted to 2mm x 2mm x 3.14 x 5.7=71.59kg, and the load factor of the pulley of the present invention is obtained by the Shear Force formula. Seat section (mm) x axle (mm) x 3.14 x material strength coefficient = load (kg)] (present invention The axle is made of stainless steel with a radius of 4mm and its material strength is 10). It is converted to 4mm x 4mm x 3.14 x 10=502kg. It is obvious from both that the conventional rivet combination pulley has a load of only 71.59kg. The pulley of the integrally formed wheel frame of the invention can have a load of up to 502.40 kg.

In addition, in the integrally formed wheel frame design of the present invention, the joint between the axle of the runner (2) and the wheel frame adopts a riveted axle, so that the center force of the runner is evenly distributed in the center of the panel, so that the load bearing force is relatively average, and The rotation of the load runner is made smoother.

Furthermore, the bearing inner sleeve of the runner of the present invention clamps the wheel frame from both sides, so that the load center of the runner is flush with the center of the panel, so the load of the runner is evenly applied to make the Sash Code or the zipper (Sash). Chain) The force will not shift, which obviously enhances the load vertical takeoff and landing function.

As shown in the first and second figures, the present invention provides a strength and load forging pulley device, the structure of which mainly comprises a wheel frame (1), a runner (2), a Palin (3), and a pair of bearing inner sleeves (4). , 5) and riveted axles (6).

The wheel frame (1) is integrally formed by a hot forging method, and comprises a pulley panel (11) and a pulley base (12) extending outward from one side of the pulley panel (11), the pulley panel ( 11) a long through groove (111) is arranged, and the pulley base (12) is an oblong tubular body, and a long elliptical space (121) is formed inside the long elliptical tubular body, and the pulley base (12) is arranged There are symmetrical bearing holes (122, 123).

Insert a Palin (3) into the center hole (21) of the runner (2), and place the runner (2) nested in the Palin (3) in the long elliptical space (121) of the wheel frame (1). Inside, a symmetrical bearing inner sleeve (4, 5) is inserted into the center hole of the Palin (3) from the outside to the inside by the bearing holes (122, 123) on both sides of the wheel base (1) pulley base (12). (31) and fix the runner (2), and one end of the runner (2) is extended by the long through slot (111) of the pulley panel (11), and the rivet axle (6) is inserted into the bearing inner sleeve (4) , 5) The center hole (41, 51) and riveted.

According to the above, the pulley device of the invention can eliminate the rivet marks on the surface of the pulley panel and can improve the strength of the pulley and the load.

(1) ‧‧‧ wheel frame

(11)‧‧‧ Pulley panel

(111)‧‧‧Long strips

(112)‧‧‧ Rivets

(12)‧‧‧ Pulley base

(121)‧‧‧Long oval space

(122, 123) ‧ ‧ bearing holes

(2) ‧ ‧ reels

(21)‧‧‧ center hole

(3) ‧ ‧ Palin

(31)‧‧‧ center hole

(4) ‧ ‧ bearing inner sleeve

(41)‧‧‧Center hole

(5) ‧ ‧ bearing inner sleeve

(51)‧‧‧Center hole

(6)‧‧‧Riveted axles

The first figure is an exploded perspective view of the present invention.

The second figure is a cross-sectional perspective view of the wheel frame of the pulley of the present invention.

The third figure is a reverse exploded perspective view of the present invention.

The fourth figure is a perspective view of the finished pulley of the present invention.

The fifth figure is a reverse perspective view of the finished pulley product of the present invention.

The sixth picture is an exploded perspective view of a conventional similar pulley.

1‧‧‧ wheel frame

11‧‧‧ Pulley panel

111‧‧‧Long strip through slot

12‧‧‧ Pulley base

122‧‧‧ bearing hole

2‧‧‧runner

21‧‧‧ center hole

3‧‧ ‧ Palin

31‧‧‧ center hole

4‧‧‧ bearing inner sleeve

41‧‧‧ center hole

5‧‧‧ bearing inner sleeve

51‧‧‧ center hole

6‧‧‧Riveted axle

Claims (1)

A lifting and forging device for increasing strength and load, the structure mainly comprises a wheel frame (1), a runner (2), a Palin (3), a pair of bearing inner sleeves (4, 5) and a riveted axle (6), The wheel frame (1) is integrally formed by a hot forging method, and comprises a pulley panel (11) and a pulley base (12) extending outward from one side of the pulley panel (11), the pulley panel (11) There is a long through groove (111), and the pulley base (12) has an elliptical tubular body, and the long elliptical tubular body forms a long elliptical space (121) and is embedded in the Palin (3). The runner (2), the runner (2) is inserted into the symmetrical bearing inner sleeve (4, 5) and riveted to the long elliptical space of the pulley base (12) by the riveted axle (6) (121) Inside, the rivet marks on the surface of the pulley panel are exempted and the strength of the pulley and the load can be increased.