CN202659788U

CN202659788U - Conical spring

Info

Publication number: CN202659788U
Application number: CN 201220238539
Authority: CN
Inventors: 尹隆康; 程冠伦; 王磊; 饶迎春
Original assignee: Hangzhou Amphenol Phoenix Telecom Parts Co Ltd
Current assignee: Hangzhou Amphenol Phoenix Telecom Parts Co Ltd
Priority date: 2012-05-25
Filing date: 2012-05-25
Publication date: 2013-01-09
Anticipated expiration: 2022-05-25

Abstract

The utility model provides a conical spring. The conical spring is made of a wire, and the diameter of each ring of the spring is in accordance with the condition that an inner ring of the spring can be collected to the adjacent outer ring step by step; the outside diameter of the bottom of the spring is between 3.0 and 4.0 millimeters, and the bottom of the spring is provided with a flat ring in a range of 0 to 270 degrees from an initial point; from the most lateral point, which is at the height of [(wire diameter/2) + 0.05mm]+/-0.03mm, of the spring, the rings of the spring form 3 to 4 spring pitches, and the pitches are gradually reduced; when the spring has 3 pitches, the pitch ratio is 1: (0.5-0.9): (0.15-0.35); and when the spring has 4 pitches, the pitch ratio is 1: (0.5-0.9): (0.15-0.35): (0.06-0.10). Under the condition that the diameter and the height of the conical spring are in micro sizes of only several millimeters, the inner rings can be collected into the outer rings step by step, and the spring has enough force values on three working points with different heights and can tolerate more than ten thousand of frequent press and release operation without fatigue and losing effect, so that the spring can meet the using requirement of a micro connector and provides good handfeel and reliable connecting function for a user.

Description

A kind of volute spring

Technical field

The utility model relates to a kind of volute spring.

Background technique

Common volute spring claims again battery spring or turriform spring generally as the usefulness that holds out against battery in the battery compartment.In the battery compartment use occasion, the operation point of spring often only has one, requirement can hold out against the battery of putting in this operation point, because battery can not picked and not placeed frequently, therefore, this volute spring yet can frequently not compressed and be discharged, and spring fatigue resistance is in this respect required can be too not high yet.

For the connector that often can be pressed and discharge; especially to being applied to this miniature class connector of the thin type mobile electronic product terminals such as similar mobile phone; its diameter and highly all only have several millimeters; its require to use wherein spring in the connector of packing into; also needing in three operation points, to have suitable power value under the small size; so that operating handle and operation ease to be provided; these three operation points are respectively; be in the operation point that is ejected working state; the operation point that is in the operation point of indentation working state and is in original position state between the two; for the spring of using this occasion, the requirement of above-mentioned power value is arranged not only, and need can tolerate and press frequently release and not tired.Common volute spring can not adapt to this job requirement.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of volute spring that can be applicable to above-mentioned connector.For this reason, the utility model by the following technical solutions: it is made of wire rod, and the diameter of each circle of described spring satisfies at the inner ring of contractive condition lower spring and can take in contiguous outer ring step by step; Described spring bottom external diameter is between 3.0 ~ 4.0mm, and the spring bottom is counted from starting point, has the flat circle of 0 ~ 270 degree scope; Described spring is under free state, upwards start at from the spring outermost point that is in [(wire diameter/2)+0.05mm] ± 0.03mm height, the number of turns of spring forms 3 ~ 4 spring pitchs of spring, and pitch reduces gradually, when being 3 spring pitchs, pitch is than being 1:0.5 ~ 0.9:0.15 ~ 0.35, when being 4 spring pitchs, pitch is than for 1:0.5 ~ 0.9:0.15 ~ 0.35:0.06 ~ 0.10, and described spring pitch is the distance between the outermost point of adjacent turn in the spring.

On the basis of adopting technique scheme, the utility model also can adopt following further technological scheme:

Described spring bottom is counted from starting point, has the flat circle of 160 ~ 270 degree scopes.

The end, top of described spring has the flat circle of 0-270 degree.

The cross section of the wire rod of described spring is circular, and described wire diameter is its diameter, is 0.26 ~ 0.32mm.

The cross section of the wire rod of described spring is square, and described wire diameter is its length of side, is 0.26 ~ 0.32mm.

When that circle less than 360 of spring top is spent, to be in the spring outermost point of highest order as the end points that calculates pitch in that circle of top.

Described spring is compressed into height apart from spring bottom 0.60 ± 0.10mm as minimum operation point take spring, to be compressed into height point apart from the aspect ratio of the height of spring bottom and minimum operation point as 1.7 ~ 1.9:1 as the second operation point, to be compressed into height point apart from the aspect ratio of the height of spring bottom and minimum operation point as 3.5 ~ 3.8:1 as the 3rd operation point, spring force value take spring-compressed to minimum operation point is as 1, power value during spring-compressed to the second operation point height is 0.8 ~ 0.6, and the power value that is compressed to the 3rd operation point height is 0.55 ~ 0.25.

Described spring fitting is in connector; Described connector comprises cap head and housing, but described cap head indentation housing and eject from housing, and described spring is as for described indentation with eject the working spring that elastic force is provided.

Owing to adopt the technical solution of the utility model, volute spring provided by the utility model is at diameter with highly only in several millimeters the microsize situation, inner ring can be taken in to the outer ring step by step, and guarantee to have enough power values in the operation point of three different heights, and can tolerate pressing and discharge frequent operation and not fatigue failure more than ten thousand times, can satisfy the usage requirement of described micro connector, for the user provide good feel and reliably linkage function, make connector have enough life-spans.

Description of drawings

Fig. 1 is embodiment's 1 provided by the utility model plan view.

Fig. 2 is embodiment's 1 provided by the utility model plan view.

Fig. 3 is embodiment's 2 provided by the utility model plan view.

Fig. 4 is embodiment's 2 provided by the utility model plan view.

Fig. 5 is the cutaway view Amplified image of the applied micro connector of the utility model when spring is in minimum operation point.

Fig. 6 is the cutaway view Amplified image of the applied micro connector of the utility model when spring is in the second operation point.

Fig. 7 is the cutaway view Amplified image of the applied micro connector of the utility model when spring is in the 3rd operation point.

Embodiment

Embodiment 1, with reference to accompanying

drawing

1,2,5,6,7.

Volute spring 100 provided by the utility model, it is made of wire rod, and the diameter of each circle of described spring satisfies at the inner ring of contractive condition lower spring can take in (as shown in Figure 2) step by step in contiguous outer ring; Described spring bottom outer diameter A is between 3.0 ~ 4.0mm, and described spring bottom is counted from starting point, has the flat circle 1 of 160 ~ 270 degree scopes, conveniently to install and to avoid the interference of adjacent turn when spring is compressed; Described spring is under free state, upwards start at from the spring outermost point 2 that is in [(wire diameter/2)+0.05mm] ± 0.03mm height, the number of turns of spring forms 3 spring pitch B1, B2, the B3 of spring, and pitch reduces gradually, pitch than for 1:0.5 ~ 0.9:0.15 ~ 0.35(as shown in Figure 2), described spring pitch is the distance between the outermost point of adjacent turn in the spring.

The end, top of described spring has the flat circle 3 of 0-270 degree, provides better feel applied connector is provided more stable support force to the operation of connector.

Described flat circle is the spring section that lead angle is 0 degree.

It is circular wire rod that described spring can adopt cross section, and described wire diameter is its diameter, is 0.26 ~ 0.32mm.

It is square wire rod that described spring also can adopt cross section, and described wire diameter is its length of side, is 0.26 ~ 0.32mm.

By spring structure design provided by the utility model, can be under micro-dimension, can realize that inner ring takes in the volute spring function to the outer ring, fatigue resistance and many operation points power value of volute spring have been improved again, be compressed into height apart from spring bottom 0.60 ± 0.10mm as minimum operation point take spring, being compressed into height point apart from the aspect ratio of the height of spring bottom and minimum operation point as 1.7 ~ 1.9:1 as the second operation point, the height point take the aspect ratio that is compressed into height bottom the spring and minimum operation point as 3.5 ~ 3.8:1 is as the 3rd operation point; The power value of the utility model volute spring in these three operation points all can reach and be suitable for the job requirement of retracting and ejecting, spring force value take spring-compressed to minimum operation point is as 1, power value during spring-compressed to the second operation point height is 0.8 ~ 0.6, and the power value that is compressed to the 3rd operation point height is 0.55 ~ 0.25.

Fig. 5 has shown that described spring 100 is installed in the state in the micro connector 200; Described connector 200 comprises cap head 201 and housing 202, but described cap head 201 indentation housings 202 and ejection from housing 202, and described spring 100 is in the bottom of connector 200, as the working spring that elastic force is provided for described cap head 201 indentations and ejection.Described connector 200 can be installed in the thin type mobile electronic product terminals such as similar mobile phone, when spring is in the second working position, the housing of described cap head and mobile electronic product terminal flushes, when spring was in the 3rd working position, described cap head ejected and is exposed to the housing of mobile electronic product terminal.

Embodiment 2, with reference to accompanying

drawing

3,4,5,6,7

In the present embodiment, described spring has 4 spring pitch B1, B2, B3, B4, and pitch is than being 1:0.5 ~ 0.9:0.15 ~ 0.35:0.06 ~ 0.10.The other parts of present embodiment are identical with embodiment 1, among Fig. 3 and 4, and drawing reference numeral and Fig. 1,2 identical identical implications of representative.

Claims

1. volute spring, it is made of wire rod, and diameter of each circle of described spring satisfies at the inner ring of contractive condition lower spring and can take in contiguous outer ring step by step; It is characterized in that described spring bottom external diameter between 3.0 ~ 4.0mm, described spring bottom is counted from starting point, has the flat circle of 0 ~ 270 degree scope; Described spring is under free state, upwards start at from the spring outermost point that is in [(wire diameter/2)+0.05mm] ± 0.03mm height, the number of turns of spring forms 3 ~ 4 spring pitchs of spring, and pitch reduces gradually, when being 3 spring pitchs, pitch is than being 1:0.5 ~ 0.9:0.15 ~ 0.35, when being 4 spring pitchs, pitch is than for 1:0.5 ~ 0.9:0.15 ~ 0.35:0.06 ~ 0.10, and described spring pitch is the distance between the outermost point of adjacent turn in the spring.

2. a kind of volute spring as claimed in claim 1 is characterized in that counting from starting point bottom the described spring, has the flat circles of 160 ~ 270 degree scopes.

3. a kind of volute spring as claimed in claim 1 is characterized in that the end, top of described spring has the flat circle of 0-270 degree.

4. a kind of volute spring as claimed in claim 1 is characterized in that the cross section of the wire rod of described spring is circle, and described wire diameter is its diameter, is 0.26 ~ 0.32mm.

5. a kind of volute spring as claimed in claim 1, the cross section that it is characterized in that the wire rod of described spring is square, described wire diameter is its length of side, is 0.26 ~ 0.32mm.

6. a kind of volute spring as claimed in claim 1 is characterized in that when that circle less than 360 of spring top is spent, to be in the spring outermost point of highest order as the end points that calculates pitch in that circle of top.

7. such as claim 1,2,3,4,5 or 6 described a kind of volute springs, it is characterized in that described spring is compressed into height apart from spring bottom 0.60 ± 0.10mm as minimum operation point take spring, to be compressed into height point apart from the aspect ratio of the height of spring bottom and minimum operation point as 1.7 ~ 1.9:1 as the second operation point, to be compressed into height point apart from the aspect ratio of the height of spring bottom and minimum operation point as 3.5 ~ 3.8:1 as the 3rd operation point, spring force value take spring-compressed to minimum operation point is as 1, power value during spring-compressed to the second operation point height is 0.8 ~ 0.6, and the power value that is compressed to the 3rd operation point height is 0.55 ~ 0.25.

8. such as claim 1,2,3,4,5 or 6 described a kind of volute springs, it is characterized in that it is installed in the connector; Described connector comprises cap head and housing, but described cap head indentation housing and eject from housing, and described spring is as for described indentation with eject the working spring that elastic force is provided.

9. a kind of volute spring as claimed in claim 7 is characterized in that it is installed in the connector; It is installed in the connector; Described connector comprises cap head and housing, but described cap head indentation housing and eject from housing, and described spring is as for described indentation with eject the working spring that elastic force is provided.