CN213839373U - Double-column arc-shaped combined spring - Google Patents
Double-column arc-shaped combined spring Download PDFInfo
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- CN213839373U CN213839373U CN202022483659.0U CN202022483659U CN213839373U CN 213839373 U CN213839373 U CN 213839373U CN 202022483659 U CN202022483659 U CN 202022483659U CN 213839373 U CN213839373 U CN 213839373U
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Abstract
The utility model discloses a twin columns arc combination spring, including arc outer spring and arc inner spring, arc outer spring and arc inner spring are cylindrical coil spring, the spring suit is in the hole of arc outer spring in the arc, arc outer spring and arc inner spring one end are neat and fixed connection, the length of arc inner spring is less than the length of arc outer spring, this kind of inside and outside twin columns arc combination spring is when receiving the alternating force, the earlier little grow of reaction force of spring, can effectively avoid monomer arc spring to produce because of high strength and high-frequency vibration or extrusion emergence fracture when receiving the alternating force, produce elastic deformation and reach a certain position back receiving external force extrusion through making the arc outer spring, arc inner spring cooperation arc outer spring subtracts the shock attenuation, thereby reach the purpose that improves the intensity and the life-span of arc outer spring.
Description
The technical field is as follows:
the utility model relates to a spring especially relates to a twin columns arc combination spring for dual mass flywheel.
Background art:
the dual-mass flywheel is an important part in the automobile power transmission system, can isolate the torsional vibration of the engine crankshaft more effectively, help to improve the performance of the car, the dual-mass flywheel divides a flywheel originally into two parts, a part is kept on the position of one side of original engine, play the role of the original flywheel, is used for starting and transmitting the rotational torque of the engine, another part is placed on one side of the drive train speed changer, is used for improving the rotational inertia of the speed changer, there is an annular oil pocket between two part flywheels, there are spring shock absorbers in the cavity, connect two part flywheels into a whole by the spring shock absorber, the spring used in the spring shock absorber at present is the monomer arc spring, its structure is disclosed in patent ZL 201020240812.0. Although the single arc spring has a certain damping effect, there is still a need for improvement.
In the in-service use process, the rotational speed of flywheel is the alternation, and the speed of speed variation is not even, single arc spring that uses in the current spring damper in the course of the work receives the effect also to be the alternation, because the alternation effort that the flywheel produced in the course of the work is great, effort is little during low speed, effort is increased rapidly during high speed, single arc damping spring can not satisfy the alternation shock attenuation requirement of the acceleration rate and the deceleration rate of flywheel, the spring damper takes place to damage easily in the course of the work, and the arc spring cost is higher, often change the use cost that has improved the device, the practicality of the device has been reduced, for this we propose a twin columns arc combination spring that dual mass flywheel used.
The utility model has the following contents:
in order to overcome the defects of the prior art, the utility model provides a double-column arc combined spring.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides a two post arc combination springs which characterized in that: including outer spring of arc and arc inner spring, outer spring of arc and arc inner spring are cylindrical coil spring, and the spring suit is in the hole of the outer spring of arc, and arc inner spring and outer spring one end parallel and level of arc are fixed, and the length of the spring is less than the length of the outer spring of arc in the arc.
Further, the arc inner spring comprises a fixed matching section and a free telescopic section, the fixed matching section is fixedly connected with one end of an inner hole of the arc outer spring into a whole, the free telescopic section is sleeved in the inner hole of the arc outer spring, the outer diameter of the arc inner spring corresponds to the diameter of the inner hole of the arc outer spring, and the free telescopic section of the arc inner spring is in clearance fit with the inner hole of the arc outer spring.
Furthermore, the external diameter of fixed cooperation section is greater than the external diameter of free flexible section, and the external diameter of free flexible section is less than the hole diameter of arc outer spring, realize fixed connection through interference fit between the fixed cooperation section of arc inner spring and the hole of arc outer spring.
Furthermore, the fixed matching section of the arc-shaped inner spring is in clearance fit with the inner hole of the arc-shaped outer spring, and the fixed matching section of the arc-shaped inner spring and the inner hole of the arc-shaped outer spring are fixedly connected at the butt joint part in a welding mode, so that axial limiting is realized.
Furthermore, the fixed matching section of the arc-shaped inner spring is in clearance fit with the inner hole of the arc-shaped outer spring, and a circumferential pin is arranged at the butt joint of the fixed matching section of the arc-shaped inner spring and the inner hole of the arc-shaped outer spring, so that radial limiting is realized.
Furthermore, one end of the arc-shaped outer spring is provided with a matching inner hole, the arc-shaped inner spring is fixedly connected with the matching inner hole of the arc-shaped outer spring through a fixed matching section,
furthermore, the matching inner hole is a taper hole with a large outer part and a small inner part, and the shape of the fixed matching section of the arc-shaped inner spring corresponds to that of the matching inner hole.
Furthermore, the matching inner hole is a step hole, the diameter of the step hole is larger than the diameter of the inner hole of the arc-shaped outer spring, and the shape of the fixed matching section of the arc-shaped inner spring corresponds to that of the matching inner hole.
Furthermore, the fixed matching section of the arc-shaped inner spring is in interference fit with the matching inner hole of the arc-shaped outer spring (1).
Furthermore, the fixed matching section of the arc-shaped inner spring is fixedly connected with the matching inner hole of the arc-shaped outer spring through a circumferential pin.
Compared with the prior art, the utility model discloses the beneficial effect that can reach is:
set up this kind of combination of arc inner spring in the hole through arc outer spring, make the arc outer spring after receiving external force extrusion production elastic deformation and reach certain shape, the common atress of arc inner spring and arc outer spring makes the arc inner spring cooperation arc outer spring bear the alternation effort jointly, thereby can increase substantially the shock attenuation effect, avoid the problem of monomer arc spring easy damage in the course of the work, make the composite spring more adapt to the alternation effort, thereby reach the purpose that improves the intensity and the life-span of arc outer spring, the practicality of composite spring has been improved.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an arcuate inner spring;
FIG. 3 is a first structural schematic view of the fixed connection between the inner and outer arcuate springs;
FIG. 4 is a second structural view of the fixed connection between the inner and outer arcuate springs;
FIG. 5 is a third schematic view of the fixed connection between the inner and outer arcuate springs;
fig. 6 is a fourth structural diagram of the fixed connection between the arc inner spring and the arc outer spring.
Wherein: 1-an arc-shaped outer spring; 2-arc inner spring; 3-a circumferential pin; 11-mating the inner bore; 21-fixing the matching section; 22-free expansion section.
The specific implementation mode is as follows:
the following description of the embodiments of the present invention will be made with reference to the accompanying drawings 1-6:
example 1: the utility model provides a two post arc combination spring, includes arc outer spring 1 and arc inner spring 2, and arc inner spring 2 is equipped with to the cover in the hole of arc outer spring 1, arc inner spring 2 includes fixed cooperation section 21 and free stretch out and draw back section 22, and fixed cooperation section 21 and the one end hole fixed connection of arc outer spring 1 become integrative, and free stretch out and draw back section 22 suit is in the hole of arc outer spring 1, the external diameter of arc inner spring 2 is corresponding with the hole diameter of arc outer spring 1, be clearance fit between the free stretch out and draw back section 22 of arc inner spring 2 and the hole of arc outer spring 1, be less than the length of arc outer spring 1 of the length of arc inner spring 2.
In this example, the outer diameters of the fixed matching section 21 and the free telescopic section 22 correspond to the diameter of the inner hole of the arc-shaped outer spring 1, and the fixed matching section 21 of the arc-shaped inner spring 2 is fixedly connected with the inner hole of the arc-shaped outer spring 1 in a welding mode.
Example 2: the difference from the embodiment 1 is that: the fixed matching section 21 of the arc-shaped inner spring 2 is in clearance fit with the inner hole of the arc-shaped outer spring 1, and a circumferential pin 3 is arranged at the butt joint of the fixed matching section and the inner hole to realize radial limiting.
Example 3: the difference from the embodiment 1 is that: one end of the arc-shaped outer spring 1 is provided with a matching inner hole 11, the arc-shaped inner spring 2 is fixedly connected with the matching inner hole 11 of the arc-shaped outer spring 1 through a fixed matching section 21, in this example, the matching inner hole 11 is a taper hole with a large outer part and a small inner part, the shape of the fixed matching section 21 of the arc-shaped inner spring 2 corresponds to that of the matching inner hole 11, and the fixed matching section 21 of the arc-shaped inner spring 2 is fixedly connected with the matching inner hole 11 of the arc-shaped outer spring 1 in a welding manner.
Example 4: the difference from the embodiment 3 is that: and the fixed matching section 21 of the arc-shaped inner spring 2 is fixedly connected with the matching inner hole 11 of the arc-shaped outer spring 1 through a circumferential pin 3.
Example 5: the difference from the embodiment 3 is that: the cooperation hole 11 is the step hole, the diameter in step hole is greater than the hole diameter of arc outer spring 1, the fixed cooperation section 21 shape of arc inner spring 2 is corresponding with cooperation hole 11, be welded fastening between the fixed cooperation section 21 of arc inner spring 2 and the cooperation hole 11 of arc outer spring 1 and be connected.
Example 6: the difference from the example 5 is that: and the fixed matching section 21 of the arc-shaped inner spring 2 is fixedly connected with the matching inner hole 11 of the arc-shaped outer spring 1 through a circumferential pin 3.
The foregoing embodiments have shown and described only the basic principles and essential features of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the claims and their equivalents.
Claims (9)
1. The utility model provides a two post arc combination springs which characterized in that: including arc outer spring (1) and arc inner spring (2), arc outer spring (1) and arc inner spring (2) are cylindrical coil spring, and arc inner spring (2) suit is in the hole of arc outer spring (1), and arc inner spring (2) and arc outer spring (1) one end parallel and level are fixed, and the length that is less than arc outer spring (1) of arc inner spring (2) is long, arc inner spring (2) are including fixed cooperation section (21) and free stretch out and draw back section (22), and the hole one end fixed connection of fixed cooperation section (21) and arc outer spring (1) becomes integrative, and free stretch out and draw back section (22) suit is in the hole of arc outer spring (1), be clearance fit between the inner hole of the free stretch out and draw back section (22) of arc inner spring (2) and arc outer spring (1).
2. The dual post arc combination spring of claim 1, wherein: the external diameter of fixed cooperation section (21) is greater than the external diameter of free flexible section (22), realize fixed connection through interference fit between fixed cooperation section (21) of arc inner spring (2) and the hole of arc outer spring (1).
3. The dual post arc combination spring of claim 1, wherein: the fixed matching section (21) of the arc-shaped inner spring (2) is in clearance fit with the inner hole of the arc-shaped outer spring (1), and the fixed matching section and the inner hole are fixedly connected at the butt joint part in a welding mode, so that axial limiting is realized.
4. The dual post arc combination spring of claim 1, wherein: the fixed matching section (21) of the arc-shaped inner spring (2) is in clearance fit with the inner hole of the arc-shaped outer spring (1), and a circumferential pin (3) is arranged at the butt joint of the fixed matching section and the inner hole to realize radial limiting.
5. The dual post arc combination spring of claim 1, wherein: one end of the arc-shaped outer spring (1) is provided with a matching inner hole (11), and the arc-shaped inner spring (2) is fixedly connected with the matching inner hole (11) of the arc-shaped outer spring (1) through a fixed matching section (21).
6. The dual post arc combination spring of claim 5, wherein: the inner matching hole (11) is a taper hole with a large outer part and a small inner part, and the shape of the fixed matching section (21) of the arc-shaped inner spring (2) corresponds to that of the inner matching hole (11).
7. The dual post arc combination spring of claim 5, wherein: be the step hole in the cooperation (11), the diameter in step hole is greater than the hole diameter of arc outer spring (1), fixed cooperation section (21) shape and the cooperation hole (11) of arc inner spring (2) are corresponding.
8. The dual post arc combination spring according to claim 6 or 7, wherein: the fixed matching section (21) of the arc-shaped inner spring (2) and the matching inner hole (11) of the arc-shaped outer spring (1) are in interference fit or are fixed by welding.
9. The dual post arc combination spring according to claim 6 or 7, wherein: the fixed matching section (21) of the arc-shaped inner spring (2) is fixedly connected with the matching inner hole (11) of the arc-shaped outer spring (1) through a circumferential pin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022483659.0U CN213839373U (en) | 2020-10-31 | 2020-10-31 | Double-column arc-shaped combined spring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022483659.0U CN213839373U (en) | 2020-10-31 | 2020-10-31 | Double-column arc-shaped combined spring |
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| CN213839373U true CN213839373U (en) | 2021-07-30 |
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| CN202022483659.0U Active CN213839373U (en) | 2020-10-31 | 2020-10-31 | Double-column arc-shaped combined spring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI820986B (en) * | 2022-10-28 | 2023-11-01 | 日商日本發條股份有限公司 | Tension spring |
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2020
- 2020-10-31 CN CN202022483659.0U patent/CN213839373U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI820986B (en) * | 2022-10-28 | 2023-11-01 | 日商日本發條股份有限公司 | Tension spring |
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