CN210050234U - Tension spring - Google Patents

Abstract

The utility model relates to a technical field of spring, more specifically says, it relates to a tension spring, and the middle part of body has the tensile portion, and the diameter of tensile portion is degressive form by its central point puts to both sides, and the central ring of tensile portion and the ring of its left and right sides pass through the ring cover and connect, and the both ends head of body all has connecting portion, and the diameter of connecting portion is degressive form by its port to tensile portion direction, has seted up three recesses on the inner wall of connecting portion, and the arc wall has all been dug to the tip of three recesses, and the connecting portion inside callipers is equipped with the connection pad, has three fixture block of pushing up in the arc wall on the connection pad, and the connection pad middle part has the couple, the utility model discloses rational in infrastructure simple.

Description

Tension spring

Technical Field

The utility model relates to a technical field of spring, more specifically say, it relates to a tension spring.

Background

A spring is a mechanical part that works by elasticity. The part made of elastic material deforms under the action of external force and restores to the original shape after the external force is removed. Also used as a "spring". Typically made of spring steel.

The tension spring is connected with the sheet metal part through the connecting ends at the two ends of the tension spring and used as a hinge connecting part. Can lead to the spring to produce unrecoverable rigidity deformation at permanent tensile in-process, current tension spring connects through the drag hook that its both ends constitute moreover, and structural shape can not change, just can't connect to the connecting plate muscle of some heterotypics.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a tension spring that rational in infrastructure is simple, and the practicality is strong, and life is of a specified duration, and tensile strength is strong.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a tension spring, which comprises a body, the middle part of body has tensile portion, the diameter of tensile portion is by its central point put to both sides and is descending the form, the central ring of tensile portion and the ring of its left and right sides pass through the ring cover and connect, the both ends head of body all has connecting portion, the diameter of connecting portion is descending the form by its port to tensile portion direction, three recesses have been seted up on the connecting portion inner wall, the arc wall has all been dug to the tip of three recesses, the connecting portion inside callipers is equipped with the connection pad, have three fixture block of pushing up in the arc wall on the connection pad, the connection pad middle part has the.

Through adopting above-mentioned technical scheme, the setting of tensile portion to through the fixed tensile portion of ring cover, improved spring compressive capacity greatly, strengthen its tensile yield limit's ability, improved life. The tensile strength of the connecting portion is improved due to the structure of the connecting portion, the connecting disc is arranged in the connecting portion, the connecting disc is replaced, the hook is replaced, and the connecting metal plates of different structures are connected.

The utility model discloses further set up to: the ring sleeve comprises two inner core strips and a rubber sleeve sleeved outside the two inner core strips.

By adopting the technical scheme, the two inner core strips in the ring sleeve are made of steel, the inner core strips are circular and are provided with the notches which can be sleeved into the central ring and the rings on the left side and the right side of the central ring, and the notches are filled in a welding mode after the inner core sleeve is sleeved, so that the ring sleeve is fixed.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an assembly diagram of the connection pad of the present invention.

Fig. 3 is a schematic sectional view of the connecting portion of the present invention.

Fig. 4 is a schematic structural view of the ring of the present invention.

Detailed Description

Embodiments of the present invention are further described with reference to fig. 1 to 4.

The embodiment has the specific structure that: the anti-theft device comprises a body, wherein a tensile part 1 is arranged in the middle of the body, the diameter of the tensile part 1 is gradually reduced from the center position to two sides, and a central ring 11 of the tensile part 1 is connected with rings on the left side and the right side of the central ring through a ring sleeve 3.

Both ends head of body all has connecting portion 2, and the diameter of connecting portion 2 is degressive by its port to 1 direction of tensile portion, has seted up three recess 20 on the 2 inner walls of connecting portion, and the tip of three recess 20 has all dug arc wall 201, and connecting portion 2 inside callipers is equipped with connection pad 4, has three fixture block 41 of propping up in arc wall 201 on connection pad 4, and connection pad 4 middle part has couple 42.

The setting of tensile portion 1 to through the fixed tensile portion 1 of ring cover 3, improved spring compressive capacity greatly, strengthen its tensile yield limit's ability, improved life. The tensile strength of the connecting portion 2 is improved due to the structure of the connecting portion 2, the connecting disc 4 is arranged in the connecting portion 2, the connecting disc 4 is replaced, the hook is replaced, and connection of connecting metal plates of different structures is achieved.

The ring sleeve 3 comprises two inner core strips 52 and a rubber sleeve 51 sleeved outside the two inner core strips.

Two inner core strips in the ring sleeve 3 are made of steel, the inner core strips are circular and are provided with notches which can be sleeved into the central ring 11 and the rings on the left side and the right side of the central ring, and after the inner core sleeve is sleeved, the notches are filled in a welding mode, so that the ring sleeve 3 is fixed.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and the skilled in the art can carry out the common changes and replacements within the technical solution of the present invention.

Claims (2)

1. A tension spring comprises a body and is characterized in that: the middle part of body has the tensile portion, and the diameter of tensile portion is descending the form to both sides by its central point put to, and the central ring of tensile portion and the ring of its left and right sides pass through the ring cover and connect, and the both ends head of body all has connecting portion, and the diameter of connecting portion is descending the form by its port to tensile portion direction, has seted up three recesses on the connecting portion inner wall, and the arc wall has all been dug to the tip of three recesses, and the connecting portion inside callipers is equipped with the connection pad, has three fixture block of pushing up in the arc wall on the connection pad, and the connection pad middle part has the.

2. The tension spring as claimed in claim 1, wherein: the ring sleeve comprises two inner core strips and a rubber sleeve sleeved outside the two inner core strips.

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