CN215673337U - Buffer device - Google Patents
Buffer device Download PDFInfo
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- CN215673337U CN215673337U CN202023297475.1U CN202023297475U CN215673337U CN 215673337 U CN215673337 U CN 215673337U CN 202023297475 U CN202023297475 U CN 202023297475U CN 215673337 U CN215673337 U CN 215673337U
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Abstract
The utility model discloses a buffer, which relates to the technical field of buffer devices and comprises a shell, a connecting rod, a sealing component and a multistage elastic component, wherein one end of the shell is provided with an opening, damping oil is filled in the shell, one end of the connecting rod is used for connecting an external action element, the other end of the connecting rod is provided with a viscous piece, the viscous piece is positioned in the shell and can drive the viscous piece to reciprocate in the shell along the axial direction of the connecting rod, the damping oil can form viscous force on the viscous piece, the sealing component is arranged between the outer wall of the connecting rod and the inner wall of the opening and is used for preventing the damping oil in the shell from flowing out, one end of the multistage elastic component is connected with one end, far away from the connecting rod, of the viscous piece, the other end of the multistage elastic component is arranged on the inner bottom surface of the shell, the multistage elastic component comprises a plurality of elastic elements which are connected in series, and an overlapping part is arranged between the adjacent elastic elements, the buffer can reduce the overall dimension and improve the working reliability.
Description
Technical Field
The utility model relates to the technical field of buffer devices, in particular to a buffer.
Background
The existing small-resistance buffer product is small in resistance value, and in order to ensure the reciprocatability, the resistance is often only formed by a spring, namely an oil-liquid viscous force structure is not provided; the pure spring structure type small resistance buffer only has a spring structure, and the rigidity is stopped after the buffer moves to a terminal point in a reciprocating reset motion under the action of spring force, namely after the spring buffer is impacted, due to the counterforce of the spring, when the spring is compressed to a limit position, the spring releases elastic deformation energy in the buffering process, and rebound impact is easy to occur.
The existing large-stroke buffer product has large and inconstant resistance value of oil liquid viscous effect, small resistance and no viscous force effect; and because the stability of the spring needs to be considered in the large-stroke buffer, the required middle diameter of the spring is also large, namely the external dimension of the corresponding hydraulic buffer product is also large. If the requirement of constant resistance value is ensured by purely depending on the viscous force of oil, the viscous force required by the hydraulic buffer is large in proportion, the structure is complex, meanwhile, the structural space required by the hydraulic buffer for accommodating the complex structure is large, namely, the external dimension of the corresponding buffer product is also large, the hydraulic buffer utilizes the damping of liquid flow to slow down the impact, the hydraulic buffer has good buffering performance, and under the condition of the same use condition, the stroke required by the hydraulic buffer is reduced by half compared with that of a spring buffer.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a damper, which solves the above problems of the prior art, and has a reduced outer size and improved operational reliability.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model provides a buffer, which comprises a shell, a connecting rod, a sealing component and a multistage elastic component, wherein one end of the shell is provided with an opening, damping oil is filled in the shell, one end of the connecting rod is used for connecting an external action element, the other end of the connecting rod is provided with a viscous piece, the viscous piece is positioned in the shell, the connecting rod can drive the viscous piece to reciprocate in the shell along the axial direction of the connecting rod, the damping oil can form viscous force on the viscous piece, the sealing component is arranged between the outer wall of the connecting rod and the inner wall of the opening and is used for preventing the damping oil in the shell from flowing out, one end of the multistage elastic component is connected with one end, far away from the connecting rod, of the viscous piece, and the other end of the multistage elastic component is arranged on the inner bottom surface of the shell, the multi-stage elastic assembly comprises a plurality of elastic elements which are connected in series, and an overlapping part is arranged between every two adjacent elastic elements.
Preferably, the seal assembly comprises a pressing ring, a seal ring and a support ring which are sequentially detachably connected, the pressing ring, the seal ring and the support ring are all sleeved on the outer wall of the connecting rod, the inner wall of the pressing ring, the inner wall of the seal ring and the inner wall of the support ring are all attached to the outer wall of the connecting rod, the pressing ring, the seal ring and the outer wall of the support ring are all fixed on the inner wall of the opening, and the pressing ring is far away from the multistage spring assembly.
Preferably, the elastic component divide into interior elastic component and outer elastic component, interior elastic component with outer elastic component passes through the adapter sleeve and connects, the one end contact of interior elastic component keep away from on the viscous piece the one end of connecting rod, the other end contact of interior elastic component the adapter sleeve, the one end contact of outer elastic component the adapter sleeve, the other end of outer elastic component is fixed on the interior bottom surface of casing, just be close to on the interior elastic component the one end of viscous piece with keep away from on the outer elastic component the one end coincidence of viscous piece.
Preferably, the inner elastic element is an inner compression spring, the connecting sleeve is a compression spring sleeve, and the outer elastic element is an outer compression spring.
Preferably, an end of the inner pressure spring, which is far away from the outer pressure spring, is sleeved on the periphery of the viscous piece, one end of the inner pressure spring, which is close to the outer pressure spring, extends into the pressure spring sleeve, one end of the outer pressure spring, which is close to the inner pressure spring, is sleeved on the outer wall of the pressure spring sleeve, a limiting protrusion is arranged at one end of the pressure spring sleeve, which is close to the viscous piece, and the limiting protrusion is fixed on the outer wall of the pressure spring sleeve, and one end of the outer pressure spring, which is close to the viscous piece, can be abutted against the end face of the limiting protrusion.
Preferably, keep away from on the viscous piece the fixed cover of one end of multistage elastic component is located the one end of connecting rod, the other end of viscous piece with multistage elastic component can dismantle the connection, just the outer wall of viscous piece with form annular gap between the inner wall of casing.
Preferably, the viscous member is a cylindrical cylinder.
Preferably, the housing is a cylindrical barrel.
Compared with the prior art, the utility model has the following technical effects:
the utility model provides a buffer, one end of a connecting rod is used for connecting an external action element, the other end of the connecting rod is provided with a viscous piece, the connecting rod can drive the viscous piece to reciprocate in a shell along the axial direction of the connecting rod, damping oil is filled in the shell, the viscous piece pushes and squeezes the damping oil, pressure difference is formed at the edge of the viscous piece to form viscous force, a sealing component is arranged between the outer wall of the connecting rod and the inner wall of an opening and is used for preventing the damping oil in the shell from flowing out to avoid influencing the buffer performance, one end of a multistage elastic component is connected with one end of the viscous piece, which is far away from the connecting rod, the other end of the multistage elastic component is arranged on the inner bottom surface of the shell, the connecting rod can drive the multistage elastic component to reciprocate when driving the viscous piece to reciprocate, the multistage elastic component comprises a plurality of elastic elements which are connected in series, and an overlapping part is arranged between the adjacent elastic elements, therefore, the total stroke is distributed to each elastic element, the working compression amount of each elastic element is reduced, the instability of large stroke of a single elastic element is avoided, the working reliability is improved, resistance is provided by the multistage elastic assemblies and damping oil together, the stability of the whole structure is guaranteed, the design size of the required multistage elastic assemblies is reduced, and the whole size is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a buffer according to the present invention;
FIG. 2 is a cross-sectional view of a bumper provided by the present invention;
FIG. 3 is a view showing the internal principal structure of a buffer provided by the present invention;
in the figure: 100-a buffer, 1-a shell, 2-a connecting rod, 3-a sealing assembly, 31-a pressing ring, 32-a sealing ring, 33-a supporting ring, 4-a multistage elastic assembly, 41-an internal pressure spring, 42-a pressure spring sleeve, 43-an external pressure spring, 5-a viscous piece and 6-damping oil.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide a buffer to solve the technical problems of poor stability and large size of the conventional buffer.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1-3, the present invention provides a buffer 100, which includes a housing 1, a connecting rod 2, a sealing assembly 3 and a multi-stage elastic assembly 4, wherein one end of the housing 1 is provided with an opening for the connecting rod 2 to extend into and reciprocate, the housing 1 is filled with a damping oil 6, preferably, the damping oil 6 is a low viscosity damping oil 6, one end of the connecting rod 2 is used for connecting an external acting element, the other end of the connecting rod 2 is provided with a viscous member 5, the viscous member 5 is located in the housing 1, the connecting rod 2 can drive the viscous member 5 to reciprocate in the housing 1 along the axial direction of the connecting rod 2, the viscous member 5 pushes and squeezes the damping oil 6, a pressure difference is formed at the edge of the viscous member 5 to form a viscous force, the sealing assembly 3 is installed between the outer wall of the connecting rod 2 and the inner wall of the opening and is used for preventing the damping oil 6 in the housing 1 from flowing out, so as the connecting rod 2 drives the viscous member 5 to reciprocate, damping oil 6 is extruded and discharged to influence the provision of viscous force and further influence the buffering performance, one end of a multi-stage elastic component 4 is connected with one end of a viscous piece 5 far away from a connecting rod 2, the other end of the multi-stage elastic component 4 is installed on the inner bottom surface of a shell 1, the connecting rod 2 can drive the multi-stage elastic component 4 to reciprocate when driving the viscous piece 5 to reciprocate, the multi-stage elastic component 4 comprises a plurality of elastic elements connected in series, overlapping parts are arranged between adjacent elastic elements, the multi-stage elastic component 4 can reduce the working compression amount of each stage of elastic element, the total compression amount of the multi-stage elastic component 4 is the total stroke of the buffer 100, the more the stages are, the smaller the compression amount distributed to each stage is, the smaller the difference value of resilience force of each stage is, the more reliable the stability of the multi-stage elastic component 4 is, the instability of large stroke of a single spring is avoided, and further the working reliability is improved, and utilize multistage elastic component 4 and damping oil 6 to provide resistance jointly, viscous force changes along with the elastic force change that multistage elastic component 4 applied to viscous piece 5, and under the effect of invariable external force, fluid viscous force can compensate multistage elastic component 4's resilience force difference, guarantees overall structure's stability, reduces required multistage elastic component 4's design size, and then reduces overall dimension.
Specifically, seal assembly 3 is including dismantling the clamping ring 31 of connecting in proper order, sealing washer 32 and lock ring 33, and clamping ring 31, sealing washer 32 and lock ring 33 all overlap and locate on the outer wall of connecting rod 2, clamping ring 31, the inner wall of sealing washer 32 and lock ring 33 all with the outer wall laminating of connecting rod 2, clamping ring 31, the outer wall of sealing washer 32 and lock ring 33 is all fixed on the open-ended inner wall, and multistage spring assembly setting is kept away from to clamping ring 31, thereby effectively seal the clearance between connecting rod 2 and the casing 1, avoid damping oil 6's leakage.
The elastic element is divided into an inner elastic element and an outer elastic element, the inner elastic element and the outer elastic element are connected through a connecting sleeve, one end of the inner elastic element, far away from the outer elastic element, is contacted with one end of the viscous piece 5, far away from the connecting rod 2, one end of the inner elastic element, close to the outer elastic element, is contacted with the connecting sleeve, one end of the outer elastic element, close to the inner elastic element, is contacted with the connecting sleeve, and one end of the outer elastic element, far away from the inner elastic element, is contacted with the inner bottom surface of the shell 1; the inner elastic element is an inner pressure spring 41, the connecting sleeve is a pressure spring sleeve 42, the outer elastic element is an outer pressure spring 43, so that all levels of elastic elements are connected in series, the length-diameter ratio requirement of all levels of elastic elements can be met to the maximum extent, the stability is ensured, when the connecting rod 2 pushes the viscous piece 5 to move towards the direction close to the inner bottom surface of the shell 1, the viscous piece 5 pushes the inner compression spring 41 to compress, the inner compression spring 41 pushes the compression spring sleeve 42 to move towards the direction close to the inner bottom surface of the shell 1, the compression spring sleeve 42 pushes the outer compression spring 43 to compress, when the lower end surface of the viscous member 5 contacts the upper end surface of the pressure spring sleeve 42, the inner pressure spring 41 is in a limit compression state, the viscous member 5 is tightly attached to the pressure spring sleeve 42, and the outer compression spring 43 is pushed continuously, partial strokes of the inner compression spring 41 and the outer compression spring 43 are overlapped, the working compression amount of the compression springs is reduced (namely the difference value of the resilience force of the compression springs is reduced), and the instability of a single compression spring in a large stroke is avoided.
The periphery of the viscous piece 5 is located to the pot head that keeps away from outer pressure spring 43 on the interior pressure spring 41, the one end that is close to outer pressure spring 43 on the interior pressure spring 41 stretches into in the pressure spring cover 42, the pot head that is close to interior pressure spring 41 on the outer pressure spring 43 is located on the outer wall of pressure spring cover 42, and the one end that is close to viscous piece 5 on the pressure spring cover 42 is equipped with spacing arch, spacing arch is fixed in on the outer wall of pressure spring cover 42, the one end that is close to viscous piece 5 on the outer pressure spring 43 can butt on spacing bellied terminal surface, when guaranteeing to compress interior pressure spring 42, can compress outer pressure spring 43, reduce the compression capacity of single pressure spring, improve the stability that the pressure springs at all levels are connected, and can guarantee to have the stroke overlap section between interior pressure spring 41 and the outer pressure spring 43, thereby overlap partial compression capacity, when guaranteeing the providing of buffer force, also reduce whole compression capacity, improve the stability of whole operation.
The fixed cover of one end of keeping away from multistage elastic component 4 on viscous piece 5 locates the one end of connecting rod 2, and the other end and the multistage elastic component 4 of viscous piece 5 can be dismantled and be connected, and forms annular clearance between the outer wall of viscous piece 5 and the inner wall of casing 1, guarantees passing through smoothly of damping oil 6 to the viscous effect to viscous piece 5.
The viscous piece 5 is a cylindrical barrel; the housing 1 is a cylindrical tube, but the present invention provides the damper 100 in which the shapes of the viscous member 5 and the housing 1 are not limited to the cylindrical shape as long as a stable and uniform viscous force can be provided to the outer periphery of the viscous member 5.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.
Claims (8)
1. A buffer, characterized by: the damping oil sealing device comprises a shell, a connecting rod, a sealing assembly and a multistage elastic assembly, wherein an opening is formed in one end of the shell, damping oil is filled in the shell, one end of the connecting rod is used for connecting an external action element, a viscous piece is installed at the other end of the connecting rod and is positioned in the shell, the connecting rod can drive the viscous piece to move in the shell in a reciprocating mode along the axial direction of the connecting rod, the damping oil can form viscous force on the viscous piece, the sealing assembly is installed between the outer wall of the connecting rod and the inner wall of the opening and is used for preventing the damping oil in the shell from flowing out, one end of the multistage elastic assembly is connected with one end, far away from the connecting rod, of the viscous piece, the other end of the multistage elastic assembly is installed on the inner bottom surface of the shell, and the multistage elastic assembly comprises a plurality of elastic elements which are connected in series, and there is an overlapping portion between adjacent elastic elements.
2. The buffer of claim 1, wherein: the sealing assembly comprises a pressing ring, a sealing ring and a supporting ring which are sequentially detachably connected, the pressing ring is sleeved with the supporting ring, the inner wall of the sealing ring is attached to the outer wall of the connecting rod, the outer wall of the supporting ring is fixed to the inner wall of the opening, and the pressing ring is far away from the multistage elastic assembly.
3. The buffer of claim 1, wherein: elastic component divide into interior elastic component and outer elastic component, interior elastic component with outer elastic component passes through the adapter sleeve and connects, the one end contact of interior elastic component keep away from on the viscous piece the one end of connecting rod, the other end contact of interior elastic component the adapter sleeve, the one end contact of outer elastic component the adapter sleeve, the other end of outer elastic component is fixed on the interior bottom surface of casing, just be close to on the interior elastic component the one end of viscous piece with keep away from on the outer elastic component the one end coincidence of viscous piece.
4. The buffer of claim 3, wherein: the inner elastic element is an inner pressure spring, the connecting sleeve is a pressure spring sleeve, and the outer elastic element is an outer pressure spring.
5. The buffer of claim 4, wherein: keep away from on the interior pressure spring the pot head of outer pressure spring is located the periphery of viscous piece, be close to on the interior pressure spring the one end of outer pressure spring stretches into to in the pressure spring cover, be close to on the outer pressure spring the pot head of inner pressure spring is located on the outer wall of pressure spring cover, just be close to on the pressure spring cover the one end of viscous piece is equipped with spacing arch, spacing arch is fixed in on the outer wall of pressure spring cover, be close to on the outer pressure spring the one end of viscous piece can the butt in on the terminal surface of spacing arch.
6. The buffer of claim 1, wherein: keep away from on the viscous piece the fixed cover of one end of multistage elastic component is located the one end of connecting rod, the other end of viscous piece with multistage elastic component can dismantle the connection, just the outer wall of viscous piece with form annular gap between the inner wall of casing.
7. The buffer of claim 6, wherein: the viscous piece is a cylindrical barrel.
8. The buffer of claim 1, wherein: the shell is a cylindrical barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023297475.1U CN215673337U (en) | 2020-12-31 | 2020-12-31 | Buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023297475.1U CN215673337U (en) | 2020-12-31 | 2020-12-31 | Buffer device |
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| Publication Number | Publication Date |
|---|---|
| CN215673337U true CN215673337U (en) | 2022-01-28 |
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| CN202023297475.1U Active CN215673337U (en) | 2020-12-31 | 2020-12-31 | Buffer device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576679A (en) * | 2020-12-31 | 2021-03-30 | 赣州禾盈通用零部件有限公司 | Buffer device |
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- 2020-12-31 CN CN202023297475.1U patent/CN215673337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576679A (en) * | 2020-12-31 | 2021-03-30 | 赣州禾盈通用零部件有限公司 | Buffer device |
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Effective date of registration: 20221223 Address after: 341000 Electronic Information Technology City, Longnan Economic and Technological Development Zone, Longnan City, Ganzhou City, Jiangxi Province (in Longnan ITU Precision Electronics Co., Ltd.) Patentee after: Jiangxi Heying Technology Co.,Ltd. Address before: 341000 Heying Industrial Park, jinpanshan Road, Shahe Industrial Park, Zhanggong District, Ganzhou City, Jiangxi Province Patentee before: GANZHOU HEYING AUTO PARTS CO.,LTD. |