CN201475221U

CN201475221U - Tension spring

Info

Publication number: CN201475221U
Application number: CN2009202349115U
Authority: CN
Inventors: 吴亚新; 薛志和
Original assignee: CHANGZHOU SUTE BEARING MANUFACTURE Co Ltd
Current assignee: CHANGZHOU SUTE BEARING MANUFACTURE Co Ltd
Priority date: 2009-08-14
Filing date: 2009-08-14
Publication date: 2010-05-19
Anticipated expiration: 2019-08-14

Abstract

The utility model relates to the technical field of springs, in particular to a tension spring, which comprises a tension spring head portion, a spring body and a tension spring tail portion, wherein the tension spring tail portion is directly screwed and connected with the tension spring head portion. The tension spring has simple assembly and convenient production manufacturing, and can effectively prevent the tension spring from loosing at work through partly pressing steel wires on 3-5 circles of the tension spring to deform. The using is simple and convenient, the cost is low, and the work efficiency is greatly increased.

Description

Extension spring

Technical field

The utility model relates to the spring technical field, especially a kind of extension spring.

Background technique

As shown in Figure 1, existing similar products need adopt one section external diameter connection spring identical with the extension spring internal diameter 5 to screw in half of extension spring heads 1, again with extension spring afterbody 3 be connected spring 5 second half spin, make extension spring head 1 and afterbody 3 connect into ring-like.Such assembling complexity, the joint in use easily gets loose, and has wasted the production time, and working efficiency is low.

The model utility content

In order to overcome the deficiency that existing extension spring easily gets loose at the place of being end-to-end, the utility model provides a kind of extension spring.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of extension spring, comprise extension spring head, spring body and extension spring afterbody, and the extension spring afterbody directly screws in the extension spring head and connects.

According to another embodiment of the present utility model, comprise that further the external diameter of extension spring head is identical with the internal diameter of extension spring spring body, the external diameter of extension spring afterbody is identical with the external diameter of extension spring spring body.

According to another embodiment of the present utility model, comprise that further the steel wire with 3～5 circle places of extension spring afterbody is pressed into local deformation, form locked point.

The beneficial effects of the utility model are, this extension spring assembling is simple, and it is convenient to manufacture, and the steel wire at 3～5 circle places of extension spring afterbody is pressed into local deformation, can prevent effectively that extension spring from getting loose at work.Easy to use, cost is low, has improved working efficiency greatly.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the schematic representation of extension spring in the prior art;

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

Fig. 3 is the enlarged view of I portion among Fig. 2;

Fig. 4 is a unfolded drawing of the present utility model.

1. extension spring heads among the figure, 2. spring body, 3. extension spring afterbody, 4. locked point, 5. connection spring.

Embodiment

With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic representation of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

As Fig. 2 is plan view of the present utility model, and a kind of extension spring comprises extension spring head 1, spring body 2 and extension spring afterbody 3, and extension spring afterbody 3 directly screws in extension spring head 1 and connects.The external diameter of extension spring head 1 is identical with the internal diameter of extension spring spring body 2, and the external diameter of extension spring afterbody 3 is identical with the external diameter of extension spring spring body 2.The steel wire at 3～5 circle places of extension spring afterbody 3 is pressed into local deformation, forms locked point 4.

Directly lay out external diameter and the identical connection head of extension spring spring body 2 internal diameters at extension spring head 1, only need during connection extension spring afterbody 3 is directly screwed in extension spring head 1, and will be pressed into local deformation, can prevent effectively that extension spring from getting loose at work from the steel wire at tail end 3～5 circle places.

As Fig. 3 is the enlarged view of I portion among Fig. 2, and the external diameter of extension spring head 1 is identical with the internal diameter of extension spring spring body 2, and the external diameter of extension spring afterbody 3 is identical with the external diameter of extension spring spring body 2.To be pressed into local deformation from the steel wire at tail end 3～5 circle places, form locked point 4, prevent that extension spring from getting loose at work.

As Fig. 4 is unfolded drawing of the present utility model, this extension spring is mainly used in special-shaped roller type one-way device, non-return device keep, extension spring can be fixed special-shaped roller, extension spring simultaneously also can be controlled the swing of special-shaped roller, roller is contacted all the time with live axle and keep unidirectional verticity, lubricating oil oil film produces oil pressure between special-shaped roller and live axle when the increase of one-way element rotating speed can make, when oil pressure surpasses tension spring tension, just can promote special-shaped roller and produce swing, make live axle and special-shaped roller disengaging driving and the realization one-way element surmount rotation.

With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this model utility technological thought.The technical scope of this model utility is not limited to the content on the specification, must determine its technical scope according to the claim scope.

Claims

1. extension spring comprises extension spring head (1), spring body (2) and extension spring afterbody (3), it is characterized in that, extension spring afterbody (3) directly screws in extension spring head (1) and connects.

2. extension spring according to claim 1 is characterized in that, the external diameter of extension spring head (1) is identical with the internal diameter of extension spring spring body (2), and the external diameter of extension spring afterbody (3) is identical with the external diameter of extension spring spring body (2).

3. extension spring according to claim 1 is characterized in that, the steel wire at 3～5 circle places of extension spring afterbody (3) is pressed into local deformation, forms locked point (4).