CN210565929U

CN210565929U - Extension spring

Info

Publication number: CN210565929U
Application number: CN201921149296.8U
Authority: CN
Inventors: 余光好
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-05-19
Anticipated expiration: 2029-07-22

Abstract

The utility model provides an extension spring, including the spring body, the both ends of the spring body are connected with the connecting portion that are used for connecting the foreign object respectively, and the outer cover of spring body has the anti-skidding sleeve pipe that is used for the extension spring body, and the at least one end of the spring body is provided with spacing bellying, and spacing bellying is used for cooperating anti-skidding sleeve pipe extension spring body and preventing anti-skidding sleeve pipe roll-off spring body. The utility model discloses when connecting two objects, on one end hung an object earlier, then held the anti-skidding sleeve pipe with the hand, blockked down at spacing bellying, made the spring body tensile to another object direction, on the extension spring other end also can hang another object, convenience simple to use makes things convenient for the spring body tensile to can prevent that the hand from skidding, can not fraying the hand.

Description

Extension spring

Technical Field

The utility model relates to a spring field, in particular to extension spring.

Background

The extension spring is also called a tension spring, called a tension spring for short, and is a spiral spring bearing axial tension. The tension springs are generally made of round section material, and when not loaded, the tension springs are generally tight and have no gaps between the coils.

When the extension spring is used for connecting two objects, one end of the extension spring is firstly hung on one object, then the spring body is held by hands to be extended towards the other object, and the other end of the extension spring can be hung on the other object. Because the extension spring is mostly round and has a smooth surface, the spring body is held by a hand to be extended towards another object, so that the spring body is easy to slip, the hand is easy to be worn, the pulling is not good, and particularly, the spring body cannot be pulled when the elastic force of the extension spring is larger.

SUMMERY OF THE UTILITY MODEL

The utility model provides an extension spring has solved current extension spring and when connecting two objects, slips very easily with the hand-stretching, breaks the hand easily to also hardly tensile defect.

The technical scheme of the utility model is realized like this:

the utility model provides an extension spring, includes the spring body, and the both ends of spring body are connected with the connecting portion that are used for connecting the foreign object respectively, and the outer cover of spring body has the anti-skidding sleeve pipe that is used for the extension spring body, and the at least one end of spring body is provided with spacing bellying, and spacing bellying is used for cooperating anti-skidding sleeve pipe extension spring body and preventing anti-skidding sleeve pipe roll-off spring body.

Furthermore, the limiting protrusion part is a conical spiral spring part, and the outer diameter of the spring body and the inner diameter of the anti-skid sleeve are both smaller than the outer diameter of the large end of the conical spiral spring part.

Furthermore, the limiting bulge part is a convex ring connected to the end part of the spring body, and the outer diameter of the spring body and the inner diameter of the anti-skid sleeve are both smaller than the outer diameter of the convex ring.

Furthermore, an anti-skid device is arranged on the outer circumferential surface of the anti-skid sleeve.

Further, the anti-skid device is one or more of anti-skid grains, frosted surfaces or inwards concave arc-shaped surfaces.

Further, the connecting part is one of a hook or a hanging ring.

Further, the anti-skid sleeve is a hard pipe or a hose.

The utility model has the advantages that: the utility model discloses when connecting two objects, on one end hung an object earlier, then held the anti-skidding sleeve pipe with the hand, blockked down at spacing bellying, made the spring body tensile to another object direction, on the extension spring other end also can hang another object, convenience simple to use makes things convenient for the spring body tensile to can prevent that the hand from skidding, can not fraying the hand.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of example 1;

FIG. 2 is an exploded view of example 1;

FIG. 3 is a schematic structural view of example 2;

FIG. 4 is an exploded view of example 2;

FIG. 5 is a schematic structural view of example 3;

fig. 6 is an exploded view of example 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 and 2, an extension spring comprises a spring body 1, wherein two ends of the spring body 1 are respectively connected with a connecting part for connecting a foreign object, an anti-slip sleeve 3 for extending the spring body is sleeved outside the spring body 1, one end of the spring body 1 is provided with a limiting protruding part, and the limiting protruding part is used for matching the anti-slip sleeve 3 to extend the spring body 1 and preventing the anti-slip sleeve 3 from sliding out of the spring body 1.

Preferably, the limiting protrusion part is a conical spiral spring part 4, and the outer diameter of the spring body 1 and the inner diameter of the anti-skid sleeve 3 are both smaller than the outer diameter of the large end of the conical spiral spring part 4.

Preferably, the anti-slip sleeve 3 is provided with an anti-slip device on the outer circumferential surface.

Preferably, the anti-slip device is one or more of anti-slip lines 31, anti-slip grains, frosted surfaces or concave arc surfaces 32.

Preferably, the connecting part is one of a hook 21 or a hanging ring 22.

Preferably, the anti-slip sleeve 3 is a hard pipe or a hose.

The utility model discloses when connecting two objects, on one end connecting portion 2 hung an object earlier, then held anti-skidding sleeve pipe 3 with the hand, blockked down at spacing bellying, made the spring body 1 tensile to another object direction, on the extension spring other end also can hang another object, convenience simple to use makes things convenient for spring body 1 tensile to can prevent that the hand from skidding, can not fray the hand.

Example 2

Referring to fig. 3 and 4, the present embodiment is different from embodiment 1 in that: the limiting protruding part is a convex ring 5 connected to the end of the spring body 1, and the outer diameter of the spring body 1 and the inner diameter of the anti-skid sleeve 3 are both smaller than the outer diameter of the convex ring 5.

Example 3

Referring to fig. 5 and 6, the present embodiment is different from embodiment 1 in that: and the two ends of the spring body 1 are provided with limiting convex parts. At this time, if the anti-slip cover 3 is selected from a hose, such as a rubber hose, etc., a rectangular rubber sheet is wound around the spring body 1 in a circle and then the ends are sewn or otherwise fixedly connected. If a hard tube is selected, after the half tube divided into two halves along the central line is buckled on the spring body 1, the two end faces are fixedly connected through fixing glue or other modes.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An extension spring, characterized in that: including the spring body, the both ends of the spring body are connected with the connecting portion that are used for connecting the foreign object respectively, and the spring body overcoat has the anti-skidding sleeve pipe that is used for the extension spring body, and the at least one end of spring body is provided with spacing bellying, and spacing bellying is used for cooperating the anti-skidding sleeve pipe extension spring body and preventing the anti-skidding sleeve pipe roll-off spring body.

2. The extension spring of claim 1, wherein: the limiting protruding part is a conical spiral spring part, and the outer diameter of the spring body and the inner diameter of the anti-skid sleeve are both smaller than the outer diameter of the large end of the conical spiral spring part.

3. The extension spring of claim 1, wherein: the limiting convex part is a convex ring connected to the end part of the spring body, and the outer diameter of the spring body and the inner diameter of the anti-skid sleeve are both smaller than the outer diameter of the convex ring.

4. The extension spring according to any one of claims 1 to 3, wherein: and an anti-skid device is arranged on the outer circumferential surface of the anti-skid sleeve.

5. The extension spring of claim 4, wherein: the anti-skid device is one or more of anti-skid grains, frosted surfaces or inwards concave arc surfaces.

6. The extension spring of claim 1, wherein: the connecting part is one of a hook or a hanging ring.

7. The extension spring of claim 1, wherein: the anti-skid sleeve is a hard pipe or a soft pipe.