TWM452263U - Bellows sleeve fastening structure improvement - Google Patents

Description

Telescopic casing fixing structure improvement

The present invention relates to a telescopic rod fixing structure which is provided on a telescopic sleeve and can be firmly clamped to the inner sleeve, and has a simplified structure to effectively reduce manufacturing and assembly costs, and has progressive use and better economic benefits. Improvement.

According to the new patent “Ming 篙 锁 lock structure improvement” of M293359 published on March 1, 2006, its structure is as described in its main patent: its locking device consists of an inner casing and an outer casing. The inner sleeve is provided with a locking knot portion on one side surface, and a plurality of pressing blades are arranged on one open end of the inner sleeve, and the outer sleeve protrudes from the outer side wall surface with a plurality of anti-slip ribs, and the inner side wall surface is provided with a The improvement of the locking section is that the locking device is provided with a "clamping section" at one end of the inner casing of the inner casing, and the clamping section is provided with a suitable spacing groove at a predetermined position, and is arranged on the side of the pressing blade. A working surface, the outer sleeve is provided with a tightening surface on one side, thereby allowing the entire clamping area to cover the circumferential surface to form an excellent grip force to fix, and the locking device is used for the inner tube and the outer tube When the telescopic fixing is fixed, it can be matched with the change of the size to achieve the purpose of combining and fixing.

The structure of the clip-up section (53) added to the forced leaf on the above-mentioned citation is described in the context of its description: "...if the inner and outer tubes (10, 20) have large differences in pipe diameters When fixing the inner tube (10), it will not be able to effectively force the pressing blade (31) of the head (30), so that the pressing force of the pressing blade (31) on the outer wall surface of the inner tube (10) is limited. ......". The shortcomings are designed. However, the cited case (53) is shown by the different direction hatching of the cross-sectional structure of the second figure, which is combined with the forced leaf The inner attachment structure, the additional combined attachment structure, is inevitably loosened and dropped during use in the operation due to the weak combination, resulting in inconvenience in use and one of its disadvantages.

In addition, the additional combination of the clamping segment (53) for the forced blade must be separately manufactured, and then combined with the forced blade, the troublesome structural combination will increase the manufacturing and assembly costs, and it is not economical, which is a disadvantage. of two.

Therefore, how to improve the shortcomings such as the inconvenient use of falling off in use and the increase in structural cost due to the complex structure combination of the formula Jingzizi lock structure is the difficulty point for the creation of the creation.

The main purpose of the present invention is to provide an improved fixing structure of the telescopic sleeve, which can form a large-scale inward clamping on the telescopic sleeve and can be firmly combined on the telescopic sleeve without additional matching of the attachment. Progressive achiever.

The second objective of the present invention is to provide a multi-advanced achiever of a telescopic casing fixing structure improvement, which is to simplify the structure and effectively reduce the manufacturing and assembly costs and economic benefits.

In order to achieve the above object, the present invention comprises a collet having a cylindrical body, forming a tying end at one end for fitting a sleeve outside the telescopic sleeve, and forming a plurality of urging leaves at the other end at the outer wall of the tying end. An external thread extends to the outer surface of each of the pressing blades; a pressing sleeve is provided with an internal thread on the inner wall of one end of the collet chuck, and the end of the clamping head can be inserted into the outer thread The screw combination, while the other end forms a tapered opening to compress each of the forced leaves.

In view of the above, it is preferred that the external thread of the outer wall of the collet extends to a surface that is three-quarters of the length of each of the forced leaves.

According to the above, the inner surface of the pressing blade is provided with a slip-proof structure.

According to the above, the outer wall of the pressing sleeve is convexly provided with the anti-slip rib.

In order to further understand the structure of the creation and the technical means to be used, that is, the expected effects achieved, several preferred embodiments are described below in detail with reference to the drawings, and it is believed that the purpose, features and other features of the present invention may be derived therefrom. In-depth and specific understanding.

Please refer to the first figure for the three-dimensional exploded view of the creation structure, which comprises a structure consisting of a collet (10) and a pressing sleeve (20) for fixing the telescopic sleeve (30), wherein; A collet (10) is a cylindrical body forming a knot end (11) at one end for the sleeve (31) to be joined by a telescopic sleeve (30), and the other end forms a plurality of compression leaves (12) ), the outer wall of the knot end (11) is provided with an external thread (13) extending to the outer surface of each of the pressing blades (12).

a pressing sleeve (20), the cylindrical body on the outer side of the set chuck (10) forms a tapered opening (23) at one end, the outer end of the outer wall is provided with a sliding rib (22) and the inner wall is provided with an internal thread (21) , the end of the clamping blade (12) can be screwed into its external thread (13), and the tapered opening (23) can form a tight adjustment to the pressing blade (12), as shown in the second figure. Shown.

For example, the second figure is a combination sectional view of the creation and the larger diameter inner casing locking state, and the above-mentioned clamping head (10) and the pressing sleeve (20) are combined by the structure, and can be clamped by the collet (10) (11) The sleeve is disposed at the end of the sleeve (31) outside the telescopic sleeve (30), that is, a fixed structure that can clamp the inner sleeve (32); and is extended by the external thread (21) of the outer wall of the collet (10) To the design of the outer wall of the pressing blade (12), for a larger diameter inner casing (32), as long as the pressing sleeve (20) is locked downwardly with respect to the external thread (13) of the collet (10), Can be The tapered opening (23) compresses the outer wall of the compression leaf (12) and forms a clamp for the inner sleeve (32).

For example, the third figure is a sectional view of the combination of the creation and the smaller diameter inner casing locking state. For the inner diameter of the smaller diameter inner casing (32), as long as the sleeve (20) is forced by the present invention, the sleeve (10) is clamped to the collet (10). The external thread (13) continues to be screwed down, and the tensioned opening (20) is tightened by the male external thread (13) extending from the collet (10) to the outer wall of the pressing blade (12) ( 23) The inner wall is compressed to form a large inward clamping, and the inner casing (32) of the smaller diameter can be firmly clamped to provide a telescopic sleeve (30) which can effectively clamp differently when being telescopically fixed. The inner diameter of the sleeve (32) achieves a better combination of use and progress.

As described above, the "reconstruction of the telescopic sleeve fixing structure" of the present invention is such that the compact structure of the one-piece design on the blade is forced to be tightly pressed by the collet, and the inner sleeve is formed without the need of other clamping attachments. The strong combination of large inward clamping combines the progress of use and the economic benefits of manufacturing and assembly cost reduction.

In summary, when Zhiben's creation has industrial applicability and progress, and this creation is not found in any publication, it is also novel. When it meets the requirements of the Patent Law, it proposes a new type of patent application according to law. The quasi-patent is a prayer.

(10)‧‧‧ chuck

(11) ‧‧‧Set ends

(12) ‧ ‧ forced leaves

(13)‧‧‧ external thread

(20)‧‧‧Forcing sleeve

(21)‧‧‧ internal thread

(22) ‧‧‧Slip ribs

(23) ‧ ‧ gradual opening

(30)‧‧‧ Telescopic casing

(31)‧‧‧Outer casing

(32)‧‧‧Inner casing

The first picture: a three-dimensional exploded view of the creation structure.

The second picture is a sectional view of the combination of the creation and the casing locking state in the larger diameter.

The third picture is a sectional view of the combination of the creation and the casing locking state in the smaller diameter.

(10)‧‧‧ chuck

(11) ‧‧‧Set ends

(12) ‧ ‧ forced leaves

(13)‧‧‧ external thread

(20)‧‧‧Forcing sleeve

(21)‧‧‧ internal thread

(22) ‧‧‧Slip ribs

(23) ‧ ‧ gradual opening

(30)‧‧‧ Telescopic casing

(31)‧‧‧Outer casing

(32)‧‧‧Inner casing

Claims (4)

The invention discloses a telescopic sleeve fixing structure, which comprises: a collet, wherein a cylindrical body forms a tying end at one end for a sleeve connection of a telescopic sleeve, and the other end forms a plurality of urging leaves for tying The outer wall of the outer end is provided with an external thread extending to the outer surface of each of the pressing leaves; a pressing sleeve is provided with a female thread on the inner wall of one end of the sleeve, and the inner end of the inner wall of the inner end of the collet can be inserted into the inner end of the collet When combined with the external threaded screw and the tapered end is formed to compress the pressing blades, the external thread protruding from the outer wall of the blade and the inner wall of the tapered opening can form a larger extent on the inner sleeve. A strong bond that grips inward. The telescopic sleeve fixing structure according to claim 1 is improved, wherein the external thread of the outer wall of the collet is preferably extended to a surface of three quarters of the length of each of the pressing blades. The telescopic sleeve fixing structure according to claim 1, wherein the inner surface of the pressing blade is provided with a non-slip structure. The telescopic sleeve fixing structure according to the first, second or third aspect of the patent application is improved, wherein the outer wall of the pressing sleeve is convexly provided with the anti-slip rib.