CN106402224A - Combined coil spring - Google Patents
Combined coil spring Download PDFInfo
- Publication number
- CN106402224A CN106402224A CN201610459219.7A CN201610459219A CN106402224A CN 106402224 A CN106402224 A CN 106402224A CN 201610459219 A CN201610459219 A CN 201610459219A CN 106402224 A CN106402224 A CN 106402224A
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- China
- Prior art keywords
- coil spring
- elastic
- end connector
- elastic unit
- shaft
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000013461 design Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000004806 packaging method and process Methods 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 6
- 230000002194 synthesizing effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The invention discloses a combined coil spring. The combined coil spring is composed of a stress shaft, multiple elastic units capable of continuously providing restoring force and a spring box arranged outside the elastic units, wherein the stress shaft is sequentially sleeved with the elastic units in the axial direction. The stress shaft is rotationally sleeved with the inner ends of the elastic units. Each elastic unit can be fixed to the outer wall of the stress shaft through a limiting piece. The outer ends of the elastic units can be fixed to the inner wall of the spring box through the limiting pieces. The center part of the top end of each elastic unit partially protrude outwards to form a protrusion. The center portion of the bottom end of each elastic unit is recessed inwards to form a sunken portion. The diameter of sunken portions is larger than that of the protrusions so that the protrusions of the elastic units located on the lower layer can be inserted into the corresponding sunken portions of the elastic units on the upper layer and the elastic units located on the lower layer and the elastic units located on the upper layer can relatively rotate with the same axis as a rotating axis. By the adoption of the combined coil spring, design and mounting are facilitated, disassembly and maintenance are fast, and the use efficiency of the coil spring is improved greatly.
Description
Technical Field
The present invention relates to machine-made accessories, and in particular, to a combination coil spring.
Background
The currently used coil spring is basically manufactured by calculating the thickness, width and length of a reed according to the requirement and then processing. However, the coil spring is inconvenient to mount and dismount in the using process, sometimes even a special tool needs to be manufactured for dismounting, the coil spring is very complicated, especially, the coil spring causes obstacles to maintenance, and the production and processing speed is delayed.
Therefore, it is highly desirable to provide a combination coil spring that is easy to design, install, remove and maintain.
Disclosure of Invention
The invention aims to provide a combined coil spring which is convenient to design and install, quick to detach and maintain and greatly improves the use efficiency of the coil spring.
In order to achieve the purpose, the invention provides a combined coil spring which comprises a stress shaft, a plurality of elastic units which are sequentially sleeved on the stress shaft along the axial direction and can continuously provide restoring force, and a spring box arranged outside the elastic units; the inner end of the elastic unit is rotatably sleeved on the stress shaft and can be fixed to the outer wall of the stress shaft through the limiting piece, and the outer end of the elastic unit can be fixed to the inner wall of the spring box through the limiting piece; the elastic unit is characterized in that a protrusion is formed by protruding the central part of the top end of the elastic unit outwards, and a depression is formed by recessing the central part of the bottom end of the elastic unit inwards; the diameter of the recess is larger than that of the protrusion so that the protrusion of the elastic unit at the lower layer can be inserted into the recess of the elastic unit at the upper layer and the elastic unit at the lower layer and the elastic unit at the upper layer can relatively rotate by taking the same axis as a rotating shaft.
Preferably, the elastic unit comprises an inner end connector, a coil spring and an outer end connector which are sequentially sleeved on the stress shaft from inside to outside, the central position of the top end face of the inner end connector is partially outwards protruded along the axial direction of the stress shaft to form a boss, and a first through hole is formed in the boss along the direction of the central axis; the central position of the bottom end surface of the outer end connector is partially inwards recessed along the axial direction of the stress shaft to form a groove matched with the boss, the diameter of the boss is smaller than that of the groove, and a second through hole is formed in the groove along the direction of the central axis; wherein, a cavity for placing the coil spring is formed between the inner end connector and the outer end connector, the inner end of the coil spring is fixedly connected with the outside of the inner end connector, and the outer end of the coil spring is fixedly connected with the inner wall of the outer end connector; the inner end connector and the outer end connector can rotate relatively by taking the same axis as a rotating shaft.
Preferably, the upper portion of the inner wall of the first through hole is inwards recessed to form a first key groove, and the stressed shaft is provided with a second key groove capable of being matched with the first key groove, and the aperture of the first key groove is equal to the aperture of the second key groove.
Preferably, the outer end connector can be fixed to the inner wall of the spring case by a stopper.
Preferably, the first key groove and the second key groove are provided with friction layers on the inner walls.
Preferably, the friction layer is a rubber friction layer.
Preferably, the rubber friction layer has a thickness of 1-2 mm.
According to the technical scheme, aiming at overcoming the characteristics of easy dispersion and difficult fixation of the coil spring and utilizing the characteristic that the elastic force can be transmitted, the invention encapsulates the single coil spring, so that the coil spring does not need to be installed any more. The packaging coil spring mechanism is divided into two parts, one end of the packaging coil spring mechanism is used for fixing the outer end of the coil spring, and the other end of the packaging coil spring mechanism is used for fixing the inner end of the coil spring. And one packaging body is an elastic unit, when the elasticity needs to be increased, the number of the elastic units only needs to be increased, and the packaging body is combined in a fixing mode of the elastic units and the stress shaft. Therefore, when the elastic units are connected in series, strong elastic force can be provided, the elastic units are connected in parallel, the elastic action stroke can be increased on the premise of keeping the elastic force unchanged, and the total force provided by the units with the same number is the same.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a composite coil spring in an embodiment provided according to the present invention.
Description of the reference numerals
1-outer end connector 2-coil spring
3-inner end connector 4-stress shaft
5-spring case 6-boss
7-groove
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, directional words such as "inward", "outward", and the like included in a term merely represent the orientation of the term in a conventional use state or a colloquial meaning understood by those skilled in the art, and should not be construed as limiting the term.
Referring to fig. 1, the present invention provides a combined coil spring, which is composed of a stressed shaft 4, a plurality of elastic units which are sequentially sleeved on the stressed shaft 4 along an axial direction and can continuously provide restoring force, and a spring case 5 arranged outside the plurality of elastic units; the inner end of the elastic unit is rotatably sleeved on the stress shaft 4 and can be fixed to the outer wall of the stress shaft 4 through the limiting piece, and the outer end of the elastic unit can be fixed to the inner wall of the spring box 5 through the limiting piece; the elastic unit is characterized in that a protrusion is formed by protruding the central part of the top end of the elastic unit outwards, and a depression is formed by recessing the central part of the bottom end of the elastic unit inwards; the diameter of the recess is larger than that of the protrusion so that the protrusion of the elastic unit at the lower layer can be inserted into the recess of the elastic unit at the upper layer and the elastic unit at the lower layer and the elastic unit at the upper layer can relatively rotate by taking the same axis as a rotating shaft.
Through the technical scheme, aiming at overcoming the characteristics of easy dispersion and difficult fixation of the coil spring and utilizing the characteristic that the elastic force can be transmitted, the single coil spring is packaged, so that the coil spring does not need to be installed any more. The packaging coil spring mechanism is divided into two parts, one end of the packaging coil spring mechanism is used for fixing the outer end of the coil spring, and the other end of the packaging coil spring mechanism is used for fixing the inner end of the coil spring. And one packaging body is an elastic unit, when the elasticity needs to be increased, the number of the elastic units only needs to be increased, and the packaging body is combined in a fixing mode of the elastic units and the stress shaft 4. Therefore, when the elastic units are connected in series, strong elastic force can be provided, the elastic units are connected in parallel, the elastic action stroke can be increased on the premise of keeping the elastic force unchanged, and the total force provided by the units with the same number is the same.
In this embodiment, in order to optimize the structure of the elastic unit and increase the installation and removal speed of the coil spring, preferably, the elastic unit includes an inner end connector 3, a coil spring 2 and an outer end connector 1 which are sequentially sleeved on the stressed shaft 4 from inside to outside, a boss 6 is formed by partially protruding the center position of the top end surface of the inner end connector 3 along the axial direction of the stressed shaft 4, and a first through hole is formed on the boss 6 along the central axis direction; the central position of the bottom end surface of the outer end connector 1 is partially inwards recessed along the axial direction of the stress shaft 4 to form a groove 7 matched with the boss 6, the diameter of the boss 6 is smaller than that of the groove 7, and a second through hole is formed in the groove 7 along the direction of the central axis; a cavity for placing the coil spring 2 is formed between the inner end connector 3 and the outer end connector 1, the inner end of the coil spring 2 is fixedly connected to the outside of the inner end connector 3, and the outer end of the coil spring 2 is fixedly connected to the inner wall of the outer end connector 1; the inner end connector 3 and the outer end connector 1 can rotate relatively by taking the same axis as a rotating shaft.
Further, in order to facilitate the mutual series connection or parallel connection between a plurality of elasticity units, preferably, the upper portion of the inner wall of the first through hole is inwards recessed to form a first key groove, and the stressed shaft 4 is provided with a second key groove which can be matched with the first key groove, and the aperture sizes of the first key groove and the second key groove are equal. Likewise, the outer end connector 1 can preferably be fixed to the inner wall of the spring case 5 by means of a stop.
Thus, as described above, in embodiment 1, n elastic units are fitted over the force receiving shaft 4. The inner end connector 3 of the first elastic unit is fixed with the stressed shaft 4, and the outer end connector 1 of the last elastic unit is fixed with the spring box 5. When the stressed shaft 4 rotates, the inner end connector 3 of the first elastic unit is driven to rotate, the coil springs 2 are stressed to drive the outer end connector 1 of the first elastic unit to rotate, the outer end connector 1 drives the inner end connector 3 of the next elastic unit to rotate and sequentially transmits the rotation to the outer end connector 1 of the last elastic unit, the last outer end connector 1 and the spring box 5 are fixed, the capacity is stored in all the coil springs 2, at the moment, one coil spring is synthesized, the synthetic coil spring is equivalent to the coil spring formed by connecting the lengths of all the coil springs 2 connected in series, namely the length is equivalent to n times of the length of a single coil spring.
In embodiment 2, n elastic units are sleeved on the stressed shaft 4, all the inner end connectors 3 are fixed to the stressed shaft 4, all the outer end connectors 1 are fixed to the spring box 5, when the stressed shaft 4 rotates, all the coil springs 2 are driven to store energy at the same time, which is equivalent to synthesizing one coil spring, and the characteristic of synthesizing the coil spring is equivalent to the connection of the widths of all the coil springs in parallel, namely the width is equivalent to n times of that of a single coil spring.
In embodiment 3, 6 elastic units are sleeved on the stressed shaft 4, all the outer end connectors 1 are connected two by two, and the outer ends of the last group of outer end connectors 1 are fixed on the spring box 5. And the inner end connectors 3 of the first two groups of elastic units are fixed on the stress shaft 4, the inner end connectors 3 of the 3 rd and 4 th groups of elastic units are fixed on an independent fixed shaft, and the inner end connectors 3 of the 5 th and 6 th groups of elastic units are fixed on an independent fixed shaft to form a mixed combination. Thus, it is equivalent to synthesizing a coil spring, and the characteristics of the synthesized coil spring are as follows: the length is 3 times as long as a single coil spring and the width is 2 times as long as a single coil spring.
In addition, in order to increase the friction between the key and the key groove after the key is installed and prevent the sliding of the key and the key groove in the rotating process and the relative displacement from affecting the elastic effect, preferably, friction layers are arranged on the inner walls of the first key groove and the second key groove.
The friction layer may be any one of materials commonly used in the art to provide a large friction force, but it is preferable that the friction layer is a rubber friction layer in view of availability and production cost control.
In addition, in order to prevent the thickness of the rubber friction layer from being too thick to affect the assembling effect between the key and the key groove and the assembling speed, the thickness of the rubber friction layer is preferably 1 to 2 mm.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (7)
1. A combined coil spring is characterized by comprising a stress shaft (4), a plurality of elastic units which are sequentially sleeved on the stress shaft (4) along the axial direction and can continuously provide restoring force, and a spring box (5) arranged outside the elastic units; the inner end of the elastic unit is rotatably sleeved on the stress shaft (4) and can be fixed to the outer wall of the stress shaft (4) through a limiting piece, and the outer end of the elastic unit can be fixed to the inner wall of the spring box (5) through the limiting piece; wherein,
the central part of the top end of the elastic unit protrudes outwards to form a protrusion, and the central part of the bottom end of the elastic unit is sunken inwards to form a depression; the diameter of the recess is larger than that of the protrusion, so that the protrusion of the elastic unit positioned on the lower layer can be inserted into the recess of the elastic unit positioned on the upper layer and positioned on the lower layer, and the elastic unit positioned on the upper layer can relatively rotate by taking the same axis as a rotating shaft.
2. The combined coil spring according to claim 1, wherein the elastic unit comprises an inner end connector (3), a coil spring (2) and an outer end connector (1) which are sequentially sleeved on the stressed shaft (4) from inside to outside, the central position of the top end surface of the inner end connector (3) is partially outwards protruded along the axial direction of the stressed shaft (4) to form a boss (6), and a first through hole is formed in the boss (6) along the direction of the central axis; the central position of the bottom end surface of the outer end connector (1) is inwards recessed along the axial direction part of the stress shaft (4) to form a groove (7) matched with the boss (6), the diameter of the boss (6) is smaller than that of the groove (7), and a second through hole is formed in the groove (7) along the direction of the central axis; wherein,
a cavity for placing the coil spring (2) is formed between the inner end connector (3) and the outer end connector (1), the inner end of the coil spring (2) is fixedly connected to the outside of the inner end connector (3), and the outer end of the coil spring is fixedly connected to the inner wall of the outer end connector (1); the inner end connector (3) and the outer end connector (1) can rotate relatively by taking the same axis as a rotating shaft.
3. The combined coil spring as claimed in claim 2, wherein the upper part of the inner wall of the first through hole is recessed inwards to form a first key slot, the stress shaft (4) is provided with a second key slot which can be matched with the first key slot, and the first key slot and the second key slot have the same aperture.
4. -composed coil spring according to claim 2, characterized in that the outer end connector (1) can be fixed to the inner wall of the spring case (5) by means of the stop.
5. The combination coil spring of claim 3, wherein the first keyway and the second keyway each have a friction layer on an inner wall thereof.
6. The combination coil spring of claim 5, wherein the friction layer is a rubber friction layer.
7. The combination coil spring as recited in claim 6, wherein the rubber friction layer has a thickness of 1-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459219.7A CN106402224B (en) | 2016-06-23 | 2016-06-23 | Combine wind spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610459219.7A CN106402224B (en) | 2016-06-23 | 2016-06-23 | Combine wind spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402224A true CN106402224A (en) | 2017-02-15 |
| CN106402224B CN106402224B (en) | 2018-09-28 |
Family
ID=58006143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610459219.7A Active CN106402224B (en) | 2016-06-23 | 2016-06-23 | Combine wind spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402224B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236824A (en) * | 2020-01-17 | 2020-06-05 | 华腾物联科技(武汉)有限公司 | Combined volute spiral spring structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250828A (en) * | 1996-03-19 | 1997-09-22 | Fuji Electric Co Ltd | Suspension spring unit for refrigerator |
| RU2362068C1 (en) * | 2008-01-23 | 2009-07-20 | Олег Савельевич Кочетов | Complex resilient member by kochetov |
| CN203051589U (en) * | 2013-01-22 | 2013-07-10 | 深圳市斯蒙奇科技有限公司 | Novel spring module |
| CN203743281U (en) * | 2014-01-27 | 2014-07-30 | 重庆红岩方大汽车悬架有限公司 | Limiting device for automobile leaf spring |
| CN104165203A (en) * | 2013-05-20 | 2014-11-26 | 北汽福田汽车股份有限公司 | Steel plate spring assembly and vehicle |
| CN205859024U (en) * | 2016-06-23 | 2017-01-04 | 芜湖新兴铸管有限责任公司 | Combination wind spring |
-
2016
- 2016-06-23 CN CN201610459219.7A patent/CN106402224B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09250828A (en) * | 1996-03-19 | 1997-09-22 | Fuji Electric Co Ltd | Suspension spring unit for refrigerator |
| RU2362068C1 (en) * | 2008-01-23 | 2009-07-20 | Олег Савельевич Кочетов | Complex resilient member by kochetov |
| CN203051589U (en) * | 2013-01-22 | 2013-07-10 | 深圳市斯蒙奇科技有限公司 | Novel spring module |
| CN104165203A (en) * | 2013-05-20 | 2014-11-26 | 北汽福田汽车股份有限公司 | Steel plate spring assembly and vehicle |
| CN203743281U (en) * | 2014-01-27 | 2014-07-30 | 重庆红岩方大汽车悬架有限公司 | Limiting device for automobile leaf spring |
| CN205859024U (en) * | 2016-06-23 | 2017-01-04 | 芜湖新兴铸管有限责任公司 | Combination wind spring |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236824A (en) * | 2020-01-17 | 2020-06-05 | 华腾物联科技(武汉)有限公司 | Combined volute spiral spring structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402224B (en) | 2018-09-28 |
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