CN203979230U

CN203979230U - Spring

Info

Publication number: CN203979230U
Application number: CN201420410044.7U
Authority: CN
Inventors: 余仕选
Original assignee: WENZHOU HELI SPRING MANUFACTURE Co Ltd
Current assignee: WENZHOU HELI SPRING MANUFACTURE Co Ltd
Priority date: 2014-07-23
Filing date: 2014-07-23
Publication date: 2014-12-03
Anticipated expiration: 2024-07-23

Abstract

A kind of spring of the utility model, comprise outer spring and inner spring, outer spring is provided with the cavity of perforation along its Hand of spiral, inner spring be nested in cavity and shape, size, the Hand of spiral of inner spring all identical with cavity, one end of outer spring arranges some latches along its Hand of spiral, has the periphery of space and latch to be provided with fastener assembly, between adjacent latch in the time that outer spring is fixed, inner spring is along its axis rotation, and inner spring slides with respect to cavity.This spring realizes by the area of contact that changes inner spring and cavity the object that free height is adjustable, [coefficient of is adjustable.

Description

Spring

Technical field

The utility model relates to a kind of spring, the spring that especially a kind of free height is adjustable, [coefficient of is adjustable.

Background technique

Spring is a kind of resilient member of retractable, is usually used in damping, clamping, energy storage and fields of measurement, closely bound up with our productive life.Spring of a great variety, comprises following several types: Compress Spring, extension spring, torsion spring and plane scroll spring substantially.Although the function of above-mentioned spring is different, all there is a general character, its free height and [coefficient of are fixed.Need to adjust the free height of spring or the situation of [coefficient of once run into, often can only select to exchange new spring or realize by the combination between spring, therefore rather inconvenience in the use.

Model utility content

For existing deficiency, the utility model provides the spring that a kind of free height is adjustable, [coefficient of is adjustable.

The utility model solves the technological scheme that its technical problem adopts: a kind of spring of the utility model, comprise outer spring and inner spring, outer spring is provided with the cavity of perforation along its Hand of spiral, inner spring be nested in cavity and shape, size, the Hand of spiral of inner spring all identical with cavity, one end of outer spring arranges some latches along its Hand of spiral, between adjacent latch, there is the periphery of space and latch to be provided with fastener assembly, in the time that outer spring is fixed, inner spring is along its axis rotation, and inner spring slides with respect to cavity.

By adopting technique scheme, the side of inner spring is close to the cavity inner wall of outer spring but relative sliding can be occurred, the adjustable maximum free length of spring is close to one times of original length, in the time that both area of contact reduce gradually, inner spring stretches out outer spring, and the free length of whole spring increases, accordingly, in the time that both area of contact increase gradually, inner spring retraction outer spring, the free length of whole spring reduces; Inner spring was similar to and is threaded with being connected of outer spring, if therefore meet the equivalent friction angle that the helix angle of inner spring is less than outer spring cavity, inner spring and outer spring just there will be locking phenomenon, no matter inner spring, outer spring are subject to the much external force along its axial direction, and slippage neither occurs; Adjustable within the scope of the [coefficient of of spring, in the time that the side of inner spring and the cavity inner wall of spring overlap completely, [coefficient of maximum, the [coefficient of sum that its value is inner spring, outer spring, when the side overwhelming majority of inner spring and the cavity inner wall of spring from time, [coefficient of minimum, its value be similar to the [coefficient of of inner spring, outer spring reciprocal and inverse; Why in one end of outer spring, latch is set, main purpose is to make the internal-and external diameter of this section of spring can do certain fine setting, improves the clamping effect of fastener assembly.

The utility model is further set to: fastener assembly comprises C matrix and fixed block, and C matrix is close to and is all extended free end around the outer circumferential face of latch and the two ends of C matrix, two free ends of fixed block fixation of C matrix.

By adopting technique scheme, fastener assembly is specifically designed to the relative position of fixing inner spring and outer spring, especially inner spring and outer spring exist while reversing the trend, both self-lockings are destroyed, need external force to stop inner spring and outer spring generation relative displacement, fastener assembly is exerted pressure and has been increased the frictional force between cavity and inner spring by outer Monday of the side to outer spring, ensures the stationarity of inner spring and outer spring position.

The utility model can further be set to: the other end that outer spring is connected with fastener assembly is fixedly installed the first supporting surface, and the other end that inner spring contacts with cavity is fixedly installed the second supporting surface.

By adopting technique scheme, the arranging of supporting surface can be played on the one hand the effect that increases spring and the area of contact of other objects, can doublely make on the other hand knob, facilitates inner spring is spun out from the cavity of outer spring.

The utility model can further be set to: the cross section of the first supporting surface is perpendicular to the axial direction of outer spring, and the cross section of the second supporting surface is perpendicular to the axial direction of inner spring.

By adopting technique scheme,, can there is along its axial direction spring flexible in the dead in line of outer line of action of force and spring, has given play to its maximum bearing capacity, and can reduce the possibility that spring occurs bending and deformation.

The utility model can further be set to: the cross section of the first supporting surface and the second supporting surface is circle, and both axis places are equipped with through hole, and sectional shape, the size of through hole are identical with the internal diameter of outer spring.

By adopting technique scheme, conveniently spring is worn on the stationary axle matching, expand its purposes, meanwhile, and also can be in the stability that to a certain degree improves spring, bring into play better its length-adjustable advantage.

Brief description of the drawings

Fig. 1 is the schematic diagram of the utility model spring;

Fig. 2 is the combination schematic diagram of the utility model spring fastener assembly.

Wherein:

1---outer spring 2---inner spring

3---cavity 4---latch

5---fastener assembly 6---C matrix

7---bolt 8---nut

9---first supporting surface 10---second supporting surface

11---through hole.

Embodiment

Referring to figs. 1 through Fig. 2, the utility model embodiment is described further.

The utility model discloses a kind of spring, comprise outer spring 1 and inner spring 2, outer spring 1 is provided with the cavity 3 of perforation along its Hand of spiral, inner spring 2 is nested in cavity 3 and the shape of inner spring 2, size, Hand of spiral are all identical with cavity 3, one end of outer spring 1 arranges some latches 4 along its Hand of spiral, has the periphery of space and latch 4 to be provided with fastener assembly 5, between adjacent latch 4 in the time that outer spring 1 is fixed, inner spring 2 is along its axis rotation, and inner spring 2 slides with respect to cavity 3.

Fastener assembly 5 comprises C matrix 6 and fixed block, fixed block comprises again bolt 7 and nut 8, C matrix 6 is for clamping the outer circumferential face of outer spring 1 end latch 4, respectively there is a circular hole at its two ends, bolt 7 can be threaded with nut 8 through two circular holes, along with bolt 7 and nut 8 are tightened gradually, the space that C matrix 6, bolt 7 and nut 8 surround is more and more less, the clamping action corresponding enhancing of C matrix 6 to outer spring 1 end, this is conducive to increase the frictional force between cavity 3 and inner spring 2, ensures the stationarity of inner spring 2 and outer spring 1 position.

Preferably, the first supporting surface 9 is fixedly installed on the other end that outer spring 1 is connected with fastener assembly 5, the second supporting surface 10 is fixedly installed on one end that inner spring 2 is connected with cavity 3, can play so on the one hand the effect of the area of contact that increases spring and other objects, can doublely make on the other hand knob, conveniently inner spring 2 be spun out from the cavity 3 of outer spring 1; The cross section of the first supporting surface 9 is perpendicular to the axial direction of outer spring 1, the cross section of the second supporting surface 10 is perpendicular to the axial direction of inner spring 2, due to the dead in line of outer line of action of force and spring, spring can be occurred along its axial direction flexible, give play to its maximum bearing capacity, and can reduce the possibility that spring occurs bending and deformation; The cross section of the first supporting surface 9 and the second supporting surface 10 is circle, and both axis places are equipped with through hole 11, sectional shape, the size of through hole 11 are identical with the internal diameter of outer spring 1, conveniently spring is worn on the stationary axle matching, expand its purposes, meanwhile, also can be in the stability that to a certain degree improves spring, bring into play better its length-adjustable advantage.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technological schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a spring, it is characterized in that: comprise outer spring and inner spring, described outer spring is provided with the cavity of perforation along its Hand of spiral, described inner spring is nested in described cavity and the shape of inner spring, size, Hand of spiral are all identical with cavity, one end of outer spring arranges some latches along its Hand of spiral, has the periphery of space and latch to be provided with fastener assembly, between adjacent described latch in the time that outer spring is fixed, inner spring is along its axis rotation, and inner spring slides with respect to cavity.

2. spring according to claim 1, it is characterized in that: described fastener assembly comprises C matrix and fixed block, described C matrix is close to and is all extended free end around the outer circumferential face of latch and the two ends of C matrix, two described free ends of described fixed block fixation of C matrix.

3. spring according to claim 2, is characterized in that: the other end that outer spring is connected with described fastener assembly is fixedly installed the first supporting surface, and the other end that inner spring contacts with cavity is fixedly installed the second supporting surface.

4. spring according to claim 3, is characterized in that: the cross section of described the first supporting surface is perpendicular to the axial direction of outer spring, and the cross section of described the second supporting surface is perpendicular to the axial direction of inner spring.

5. spring according to claim 4, is characterized in that: the cross section of the first supporting surface and the second supporting surface is circle, and both axis places are equipped with through hole, and sectional shape, the size of described through hole are identical with the internal diameter of outer spring.