CN201512088U

CN201512088U - Center shaft structure

Info

Publication number: CN201512088U
Application number: CN2009201714643U
Authority: CN
Inventors: 林文华
Original assignee: HONGGUANG INDUSTRY Co Ltd
Current assignee: HONGGUANG INDUSTRY Co Ltd; VP Components Co Ltd
Priority date: 2009-08-18
Filing date: 2009-08-18
Publication date: 2010-06-23
Anticipated expiration: 2019-08-18

Abstract

The utility model relates to a center shaft, which is mainly characterized in that a middle shaft is arranged in a five-way pipe of a bicycle, a connecting end extends from each end of the center shaft, the external part of the connecting end is provided with a threaded section for locking a screw lock component; and threads in opposite directions are formed at thread sections at two ends of the center shaft to prevent the screw lock component from rotating in the center shaft and loosening.

Description

Middle axle construction

Technical field

The utility model relates to a kind of bicycle, be particularly related to a kind of middle axle construction of bicycle, it respectively has the middle axle construction of positive and negative thread segment for a kind of two ends, and can trample when advancing in user's application of force, auto lock is fixed the screw lock module of this foot-operated crank, gets loose the problem that drops to prevent screw lock module when driving.

Background technology

As shown in Figure 1, bicycle commonly used is to be provided with an axis 2 in five-way pipe 1, this place, axis 2 nearly two ends is provided with the retaining edge 3 of annular standing shape, and these five-way pipe 1 two ends respectively are provided with a lid 4, these lid 4 central authorities can wear the location for this axis 2, and these lid 4 inboards are provided with a groove 5, and this groove 5 can cooperate the retaining edge 3 of axis 2, so that a ball set 6 is positioned between this axis 2 and the lid 4, and make that this axis 2 can smooth and easy rotation in five-way pipe 1.Wherein, these axis 2 two ends are a coupling end 7, and this coupling end 7 can be installed for the bicycle pedals crank, and these coupling end 7 outer ends are a thread segment 8, and this thread segment 8 can be fixed for a screw lock module 9 screw locks, crank is locked in this coupling end 7 places.

But because the thread segment 8 of general axis 2 commonly used is all the forward screw thread, when it was arranged at place, axis 2 two ends respectively, the locking direction of this two thread segment 8 was an opposite sense.Need constantly trample crank and advance to drive bicycle when the user drives, this axis 2 also rotates in five-way pipe 1 thereupon, and this screw lock module 9 is then easily because of factors such as thread pitch or vibrations, along with the rotation generation of axis 2 is slided slightly.Because the locking direction of this two thread segment 8 is an opposite sense, wherein the screw lock module 9 of a side can be because this one slides and locking gradually slightly, the screw lock module 9 of opposite side then can because of this one slide slightly and gradually pine change, the permanent use down, this screw lock module 9 is in driving the doubt that happening occasionally gets loose drops, even can cause into the side of body to user's safety.

Summary of the invention

Main purpose of the present utility model is to provide a kind of middle axle construction, and the thread segment at these axis two ends has the screw thread that opposite sense is provided with, to prevent that this screw lock module from when axis rotates, getting loose phenomenon.

For achieving the above object, axle construction during the utility model is a kind of, it mainly is to be provided with an axis in the five-way pipe of a bicycle, this place, axis two ends and each extension are provided with a coupling end, this place, coupling end outer end has a thread segment, is locked for a screw lock module; Wherein, the thread segment at these axis two ends has the screw thread that opposite sense is provided with, to prevent that this screw lock module from when axis rotates, getting loose phenomenon.

Axle construction in described, wherein, the thread segment of this axis one side is the forward screw thread, and the thread segment of opposite side is a reverse thread.

Axle construction in described, wherein, the rotation direction of advancing of this axis is the screw-threaded coupling direction of thread segment.

The beneficial effects of the utility model are: the thread segment at these axis two ends is provided with rightabout screw thread, this screw lock module is because factors such as thread pitch or vibrations, when sliding slightly along with the rotation generation, can guarantee of the direction rotation of the screw lock module at these two ends toward locking, so that this screw lock module is through after using for a long time, still can tightly lock on this axis, prevent the problem that screw lock module gets loose really, can guarantee that more the rider's is safe in utilization.

Description of drawings

Fig. 1 is axis structural representation commonly used;

Fig. 2 is a perspective exploded view of the present utility model;

Fig. 3 is a plan sketch of the present utility model;

Fig. 4 is the part scheme drawing of the utility model threaded one end section;

Fig. 5 is the part scheme drawing of the utility model other end thread segment;

Fig. 6 is a running condition scheme drawing of the present utility model ();

Fig. 7 is a running condition scheme drawing of the present utility model (two).

Description of reference numerals: 10-axis; The 11-coupling end; The 12-thread segment; The 20-screw lock module; 30-rides crank.

The specific embodiment

As shown in Figures 2 and 3, a kind of middle axle construction, it comprises:

One axis 10, it mainly is to be provided with an axis 10 in the five-way pipe of a bicycle, and this place, axis 10 two ends and each extension are provided with a coupling end 11, and this place, coupling end 11 outer ends has a thread segment 12, is locked for a screw lock module 20; Wherein, the thread segment 12 of these axis 10 1 sides is the forward screw thread, and the thread segment 12 of opposite side is a reverse thread, so that this two thread segment 12 has the screw thread that opposite sense is provided with;

Two screw lock module 20, this screw lock module 20 can be general assemblies such as nut, but its screw lock is on the thread segment 12 at these axis 10 two ends, so that the strength that is locked to be provided.

After knowing above-mentioned detailed structure of the present utility model, below describe in detail one by one at operating principle of the present utility model:

As Fig. 4 and shown in Figure 5, the thread segment 12 of these axis 10 1 sides is the forward screw thread, and the thread segment 12 of opposite side is a reverse thread, make this two thread segment 12 have the screw thread that opposite sense is provided with, and the rotation direction of advancing of this axis 10 is the screw-threaded coupling direction of thread segment 12.

As shown in Figure 6, the coupling end 11 at these axis 10 two ends can be for foot-operated crank 30 sockets of a bicycle thereon, and rely on the setting of this thread segment 12 and screw lock module 20, can be locked on this axis 10 by foot-operated crank 30.

And as shown in Figure 7, because the rotation direction of advancing of this axis 10 is the screw-threaded coupling direction of thread segment 12, when the foot-operated crank 30 of user's treadled cycle advances, this screw lock module 20 is because the factors such as gap of thread pitch or foot-operated crank 30 and coupling end 11, rotation along with foot-operated crank 30, because foot-operated crank 30 produces slightly with the friction of screw lock module 20 and slides, and the rotation direction of screw lock module 20 is same as the rotation direction of axis 10 and foot-operated crank 30, when therefore this screw lock module 20 takes place to slide, can automatically screw lock module 20 be lock onto axis 10 ends.

The utility model is that the thread segment 12 at these axis 10 two ends is provided with rightabout screw thread, this screw lock module 20 is because factors such as the gap of thread pitch, foot-operated crank 30 and coupling end 11 or vibrations, when sliding slightly along with foot-operated crank 30 rotation generations, can guarantee of the direction rotation of the screw lock module 20 at these two ends toward thread segment 12 lockings, so that even this screw lock module 20 is through after the permanent use, still can tightly lock on this axis 10, really prevent the problem that gets loose of screw lock module 20, can guarantee that more the rider's is safe in utilization.

The above person only, it only is preferred embodiment of the present utility model, when not limiting the scope that the utility model is implemented with this, so the change of numerical value or displacement of equivalent elements such as, or, all should still belong to the category that the utility model patent contains according to equalization variation and modification that the utility model claim is done.

Claims

1. axle construction in one kind, it mainly is to be provided with an axis in the five-way pipe of a bicycle, and this place, axis two ends and each are extended and are provided with a coupling end, and this place, coupling end outer end has a thread segment, is locked for a screw lock module; It is characterized in that: the thread segment at these axis two ends has the screw thread that opposite sense is provided with.

2. axle construction in as claimed in claim 1, it is characterized in that: the thread segment of this axis one side is the forward screw thread, and the thread segment of opposite side is a reverse thread.

3. axle construction in as claimed in claim 1, it is characterized in that: the rotation direction of advancing of this axis is the screw-threaded coupling direction of thread segment.