CN112049899A - Refrigerator compressor rubber vibration isolation pad and vibration damping connection structure - Google Patents
Refrigerator compressor rubber vibration isolation pad and vibration damping connection structure Download PDFInfo
- Publication number
- CN112049899A CN112049899A CN202010789101.7A CN202010789101A CN112049899A CN 112049899 A CN112049899 A CN 112049899A CN 202010789101 A CN202010789101 A CN 202010789101A CN 112049899 A CN112049899 A CN 112049899A
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- Prior art keywords
- refrigerator
- rubber
- compressor
- vibration
- bottom plate
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- 238000002955 isolation Methods 0.000 title claims abstract description 50
- 238000013016 damping Methods 0.000 title claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 27
- 125000006850 spacer group Chemical group 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 61
- 229910000831 Steel Inorganic materials 0.000 description 13
- 239000010959 steel Substances 0.000 description 13
- 239000006096 absorbing agent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002356 single layer Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
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- 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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
Abstract
The invention discloses a refrigerator compressor rubber vibration isolation pad and a vibration damping connection structure, which comprises a vibration isolation pad body, wherein the vibration isolation pad body comprises a cylindrical boss, a first rubber layer, a first metal layer and a second rubber layer which are sequentially connected, a through hole penetrating through the vibration isolation pad body is formed in the vibration isolation pad body, a limiting ring groove used for a compressor foot bottom plate is formed in the outer side wall of the cylindrical boss, the vibration isolation pad further comprises a bolt, a pressure pipe sleeve, the compressor foot bottom plate and a refrigerator bottom plate, an inner hole which is communicated up and down is formed in the middle of the pressure pipe sleeve, the pressure pipe sleeve is arranged in the through hole of the vibration isolation pad body, the compressor foot bottom plate is sleeved on the limiting ring groove, the refrigerator bottom plate is tightly attached to one end, far away from. The invention can reduce the noise transmitted to the refrigerator by the compressor through the vibration isolation pad, and reduce the working noise and vibration of the refrigerator.
Description
Technical Field
The invention relates to the technical field of refrigerator compressors, in particular to a rubber vibration isolation pad and a vibration damping connection structure of a refrigerator compressor.
Background
The compressor is the power source of the refrigerator and is also the biggest noise source of the refrigerator. The noise of the compressor is partially radiated through the shell, and partially transmitted through the vibration of the air flow of the air suction and exhaust pipeline, but the most important part is the vibration transmission of the connection between the compressor foot plate and the refrigerator supporting bottom steel plate, and is radiated through the vibration of the supporting bottom steel plate and the refrigerator body fixedly connected with the bottom steel plate.
With the increase of the volume of the refrigerator, a high-speed, high-power inverter compressor is gradually applied. At present, most of refrigerator compressors are arranged on a supporting bottom steel plate of a refrigerator compressor bin, and the supporting bottom steel plate is fixed on reinforcing plates on two sides of a refrigerator to support the compressors and related electrical accessories. The reciprocating inertia force, the rotational inertia force and the overturning moment in the operation process of the compressor can cause the vibration phenomenon of the compressor. The vibration of the compressor is transmitted to the refrigerator body through the refrigerator supporting bottom steel plate, resulting in the problem of excessive vibration and noise of the refrigerator. Therefore, the optimal upgrade of the connection vibration isolation and vibration reduction technology of the compressor and the refrigerator becomes important. Therefore, it is necessary to design a rubber vibration isolator for a compressor of a refrigerator, which reduces the noise transmitted from the compressor to the refrigerator through the vibration isolator and reduces the working noise and vibration of the refrigerator.
Chinese patent application publication No. CN207600013U, published as 2018, month 07, and month 10, entitled "a rubber gasket for a refrigerator compressor", discloses a rubber gasket for a refrigerator compressor, a gasket body, an air cavity is arranged inside the gasket body, the gasket body is of an annular structure, a mounting hole is arranged in the middle of the gasket body, the air cavity is of an annular structure and is arranged on the inner wall of the gasket body, an air port communicated with the air cavity is arranged on the inner side wall of the gasket body, and the cushion shock absorption and the reduction of resonance noise are realized by arranging the air cavity in the gasket body. But this rubber packing ring is different with the rubber vibration isolator structure of this application design, and the damping effect is not obvious.
Disclosure of Invention
The invention provides a refrigerator compressor rubber vibration isolator which aims to solve the problem that vibration of a compressor is transmitted to a refrigerator body of a refrigerator through a refrigerator supporting bottom steel plate to cause overlarge vibration and noise of the refrigerator in the prior art, and can reduce the noise transmitted to the refrigerator by the compressor through the vibration isolator and reduce the working noise and vibration of the refrigerator.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a refrigerator compressor rubber vibration isolator, includes the vibration isolator body, the vibration isolator body is equipped with the through-hole that runs through the vibration isolator body including cylindric boss, first rubber layer, first metal level and the second rubber layer that connects gradually on the vibration isolator body, is equipped with the spacing annular that is used for compressor foot board on the lateral wall of cylindric boss.
In the technical scheme, the thickness of the single-layer rubber layer on the vibration isolation pad body is larger than that of the single-layer metal layer, the inner diameter and the outer diameter of the rubber layer are consistent with those of the metal layer, the upper end and the lower end of the vibration isolation pad body are made of rubber materials, the number of the rubber layers is one more than that of the metal layer, and the diameter of the cylinder of the main body part of the vibration isolation pad body is larger than that of. Every layer of rubber of vibration isolation pad body can be regarded as a shock absorber, and multilayer structure can carry out vibration isolation many times, effectively keeps apart the compressor and passes through the rubber pad to the steel sheet transmission vibration at the bottom of the refrigerator.
Preferably, the vibration isolation pad body is provided with a step hole which is coaxial with the through hole, the diameter of the step hole is larger than that of the through hole, and the step hole is arranged at one end close to the cylindrical boss. The step hole facilitates the passing of other structures.
Preferably, the cylindrical boss and the first rubber layer are of an integrally formed structure. The structure is convenient for processing the vibration isolation pad body, and meanwhile, the stable connection between the compressor foot bottom plate and the first rubber layer is ensured.
Preferably, the first rubber layer, the first metal layer and the second rubber layer have the same outer diameter.
Preferably, the vibration isolator body further comprises a plurality of second metal layers and a plurality of third rubber layers, the second metal layers correspond to the third rubber layers one to one, and the second metal layers and the third rubber layers are alternately arranged below the second rubber layers. The structure can adjust the quantity of second metal level and a plurality of third rubber layer according to the high demand of vibration isolator, and every layer of rubber can be regarded as a shock absorber, and multilayer structure can carry out vibration isolation many times, effectively keeps apart the compressor and passes through the rubber pad to the refrigerator bottom steel sheet transmission vibration.
The utility model provides a refrigerator compressor damping connection structure, includes foretell vibration isolation pad body, still includes bolt, pipe pressing sleeve, compressor foot bottom plate and refrigerator bottom plate, and the hole that link up from top to bottom is seted up to the centre of pipe pressing sleeve, and the pipe pressing sleeve sets up in the through-hole of vibration isolation pad body, and compressor foot bottom plate cover is established on spacing annular, and refrigerator bottom plate and vibration isolation pad body keep away from the one end of spacing annular and hug closely, and the one end of bolt is worn pressure pipe sleeve and refrigerator bottom plate threaded connection.
When the vibration reduction connecting structure is installed, the vibration isolation pad body is placed on the refrigerator bottom plate, the compressor is slowly placed into the vibration isolation pad body, the inner hole of the compressor foot bottom plate is aligned with the cylindrical boss of the vibration isolation pad body, the limiting ring groove is connected with the compressor foot bottom plate, the cylindrical boss can deform inwards at the moment, the compressor foot bottom plate can be sleeved into the limiting ring groove, then the pressure pipe sleeve is sleeved into the inner through hole of the vibration isolation pad body, the lower end face of the pipe sleeve and the pressure pipe sleeve is pressed to be in contact with the upper end face of the refrigerator bottom plate, the inward deformation of the cylindrical boss is limited at the moment, the compressor foot bottom plate cannot be separated from the limiting ring groove, one end of the bolt is inserted into the pressure pipe sleeve, the bolt is screwed with the threaded end of the refrigerator bottom plate. The vibration reduction connecting structure is convenient to install and stable in supporting, the compressor foot bottom plate and the refrigerator bottom plate are not in direct contact, and the middle of the compressor foot bottom plate and the refrigerator bottom plate are isolated through the plurality of rubber layers, so that a good vibration reduction effect can be achieved.
Preferably, a positioning boss is arranged on the refrigerator bottom plate, the positioning boss extends into the through hole and is in contact with the pressure pipe sleeve, and the bolt is in threaded connection with the positioning boss. The positioning bosses in the technical scheme are just completely inserted into the through holes of the vibration isolation pad body, so that the guiding and positioning effects can be achieved.
Preferably, the bolt further comprises a gasket, and the gasket is arranged between the pressure pipe sleeve and the head of the bolt. The gasket is pressed to the lower end face of the top of the bolt, the gasket is pressed to the pipe pressing sleeve, so that the whole device can be fixed, and the head of the bolt is prevented from being in direct contact with the pipe pressing sleeve.
The invention has the beneficial effects that: (1) the structure is simple, and the installation is convenient; (2) each layer of rubber can be regarded as a vibration absorber, and the multilayer structure can carry out vibration isolation for multiple times, so that the compressor is effectively isolated from transmitting vibration to the bottom steel plate of the refrigerator through the rubber pad.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of example 2;
FIG. 3 is a schematic structural view of embodiment 3.
In the figure: the vibration isolation pad comprises a vibration isolation pad body 1, a cylindrical boss 1.1, a first rubber layer 1.2, a first metal layer 1.3, a second rubber layer 1.4, a through hole 1.5, a limiting ring groove 1.6, a step hole 1.7, a second metal layer 1.8, a third rubber layer 1.9, a bolt 2, a pressure pipe sleeve 3, an inner hole 3.1, a compressor foot bottom plate 4, a refrigerator bottom plate 5, a positioning boss 5.1 and a gasket 6.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1, a refrigerator compressor rubber vibration isolator comprises a vibration isolator body 1, the vibration isolator body 1 comprises a cylindrical boss 1.1, a first rubber layer 1.2, a first metal layer 1.3 and a second rubber layer 1.4 which are sequentially connected, the cylindrical boss 1.1 and the first rubber layer 1.2 are of an integrally formed structure, the outer diameters of the first rubber layer 1.2, the first metal layer 1.3 and the second rubber layer 1.4 are the same, the thicknesses of the first rubber layer 1.2 and the second rubber layer 1.4 are larger than that of the first metal layer 1.3, a through hole 1.5 and a step penetrating through the vibration isolator body 1 are formed in the vibration isolator body 1, the through hole 1.5 and the step are coaxially arranged, the diameter of the step hole 1.7 is larger than that of the through hole 1.5, the step hole 1.7 is arranged at one end close to the cylindrical boss 1.1, and a limiting ring groove 1.6 for a compressor foot bottom plate 4 is formed in the outer side wall.
In the technical scheme, the thickness of the single-layer rubber layer on the vibration isolation pad body 1 is larger than that of the single-layer metal layer, the inner diameter and the outer diameter of the rubber layer are consistent with those of the metal layer, the upper end and the lower end of the vibration isolation pad body 1 are made of rubber materials, the rubber layer is one layer more than the metal layer, and the diameter of the cylinder of the main body part of the vibration isolation pad body 1 is larger than that of an inner hole 3.1 of the. Each layer of rubber of the vibration isolation pad body 1 can be regarded as a vibration absorber, multiple layers of structures can perform vibration isolation for multiple times, and the vibration isolation compressor can effectively isolate vibration transmitted to a refrigerator bottom steel plate through the rubber pads.
Example 2:
as shown in fig. 2, in addition to embodiment 1, the vibration isolator main body 1 further includes a second metal layer 1.8 and a third rubber layer 1.9, the second metal layer 1.8 is disposed below the second rubber layer 1.4, and the third rubber layer 1.9 is disposed below the second metal layer 1.8. The quantity of the second metal layer 1.8 and the third rubber layers 1.9 can be adjusted according to the height requirement of the vibration isolation pad, each layer of rubber can be regarded as a vibration absorber, the multi-layer structure can carry out vibration isolation for multiple times, and the compressor is effectively isolated to transmit vibration to the refrigerator bottom steel plate through the rubber pads.
Example 3:
as shown in fig. 3, a vibration damping connection structure of a refrigerator compressor comprises the vibration isolation pad body 1 described in embodiment 1, and further comprises a bolt 2, a pressure pipe sleeve 3, a compressor foot plate 4, a refrigerator bottom plate 5 and a gasket 6, wherein an inner hole 3.1 which is through up and down is formed in the middle of the pressure pipe sleeve 3, the pressure pipe sleeve 3 is arranged in a through hole 1.5 of the vibration isolation pad body 1, the compressor foot plate 4 is sleeved on a limit ring groove 1.6, the refrigerator bottom plate 5 is tightly attached to one end, away from the limit ring groove 1.6, of the vibration isolation pad body 1, and one end of the bolt 2 penetrates through the pressure pipe sleeve 3 and is in threaded connection with the compressor foot; a positioning boss 5.1 is fixed on the refrigerator bottom plate 5, the positioning boss 5.1 extends into the through hole 1.5 and contacts with the pressure pipe sleeve 3, and the bolt 2 is in threaded connection with the positioning boss 5.1.
When the vibration damping connecting structure is installed, the vibration isolation pad body 1 is placed on the refrigerator bottom plate 5, so that the positioning bosses 5.1 are just completely inserted into the through holes 1.5 of the vibration isolation pad body 1, and the guiding and positioning effects are achieved; the compressor is slowly placed, an inner hole 3.1 of a compressor foot bottom plate 4 is aligned with a cylindrical boss 1.1 of a vibration isolation pad body 1, a limiting ring groove 1.6 is connected with the compressor foot bottom plate 4, the cylindrical boss 1.1 can deform inwards at the moment, the compressor foot bottom plate 4 can be sleeved into the limiting ring groove 1.6, then a pipe pressing sleeve 3 is sleeved into an inner through hole 1.5 of the vibration isolation pad body 1, the pipe pressing sleeve 3 is pressed, the lower end face of the pipe pressing sleeve 3 is in contact with the upper end face of a refrigerator foot bottom plate 5, the cylindrical boss 1.1 deforms inwards to a limited extent, the compressor foot bottom plate 4 cannot be separated from the limiting ring groove 1.6, one end of a bolt 2 penetrates through a gasket 6 and is inserted into the pipe pressing sleeve 3 and is screwed with the threaded end of the refrigerator foot bottom plate 5, the gasket 6 is pressed on the lower end face of the top of the bolt 2, and the gasket 6. The vibration reduction connecting structure is convenient to install and stable in supporting, the compressor foot base plate 4 and the refrigerator base plate 5 are not in direct contact, and the middle of the compressor foot base plate and the refrigerator base plate are isolated through a plurality of layers of rubber layers, so that a good vibration reduction effect can be achieved.
The invention has the beneficial effects that: the structure is simple, and the installation is convenient; each layer of rubber can be regarded as a vibration absorber, and the multilayer structure can carry out vibration isolation for multiple times, so that the compressor is effectively isolated from transmitting vibration to the bottom steel plate of the refrigerator through the rubber pad.
Claims (8)
1. The utility model provides a refrigerator compressor rubber vibration isolator, characterized by, includes the vibration isolator body, and the vibration isolator body is equipped with the through-hole that runs through the vibration isolator body including cylindric boss, first rubber layer, first metal level and the second rubber layer that connects gradually on the vibration isolator body, be equipped with the spacing annular that is used for compressor foot board on the lateral wall of cylindric boss.
2. The rubber vibration isolator for refrigerator compressors according to claim 1, wherein said vibration isolator body is provided with a stepped hole coaxially disposed with the through hole, the stepped hole having a larger diameter than the through hole, the stepped hole being disposed at an end adjacent to the cylindrical boss.
3. The refrigerator compressor rubber vibration isolator according to claim 1, wherein the cylindrical boss and the first rubber layer are integrally formed.
4. The refrigerator compressor rubber vibration isolator according to claim 1, 2 or 3, wherein the first rubber layer, the first metal layer and the second rubber layer have the same outer diameter.
5. The refrigerator compressor rubber vibration isolator according to claim 1, 2 or 3, wherein said vibration isolator body further comprises a plurality of second metal layers and a plurality of third rubber layers, the second metal layers and the third rubber layers are in one-to-one correspondence, and the second metal layers and the third rubber layers are alternately arranged below the second rubber layers.
6. A vibration damping connection structure of a refrigerator compressor is characterized by comprising the vibration isolation pad body as claimed in the above claims, and further comprising a bolt, a pressure pipe sleeve, a compressor foot bottom plate and a refrigerator bottom plate, wherein an inner hole which is communicated up and down is formed in the middle of the pressure pipe sleeve, the pressure pipe sleeve is arranged in a through hole of the vibration isolation pad body, the compressor foot bottom plate is sleeved on the limiting ring groove, the refrigerator bottom plate is tightly attached to one end, away from the limiting ring groove, of the vibration isolation pad body, and one end of the bolt penetrates through the pressure pipe sleeve to be in threaded connection.
7. The shock-absorbing connecting structure of the refrigerator compressor as claimed in claim 6, wherein the refrigerator bottom plate is provided with a positioning boss, the positioning boss extends into the through hole and contacts with the pressure pipe sleeve, and the bolt is in threaded connection with the positioning boss.
8. The shock-absorbing connecting structure for the refrigerator compressor as claimed in claim 6, further comprising a spacer, the spacer being disposed between the sleeve and the head of the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789101.7A CN112049899A (en) | 2020-08-07 | 2020-08-07 | Refrigerator compressor rubber vibration isolation pad and vibration damping connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010789101.7A CN112049899A (en) | 2020-08-07 | 2020-08-07 | Refrigerator compressor rubber vibration isolation pad and vibration damping connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112049899A true CN112049899A (en) | 2020-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010789101.7A Pending CN112049899A (en) | 2020-08-07 | 2020-08-07 | Refrigerator compressor rubber vibration isolation pad and vibration damping connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112049899A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532007A (en) * | 2021-07-23 | 2021-10-22 | 长虹美菱股份有限公司 | Damping callus on sole and refrigerator |
| CN115163714A (en) * | 2022-05-31 | 2022-10-11 | 哈尔滨工业大学 | Adjustable explosive impact vibration damper for initiating explosive devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005171609A (en) * | 2003-12-10 | 2005-06-30 | Oiles Ind Co Ltd | Mounting structure of multi-layer rubber base isolation bearing device |
| CN103925329A (en) * | 2014-04-15 | 2014-07-16 | 加西贝拉压缩机有限公司 | Vibration-damping connecting structure for compressor and refrigerator baseplate |
| CN107327535A (en) * | 2017-05-27 | 2017-11-07 | 上海电力学院 | A kind of laminated type metal-rubber shock isolating pedestal for Substation Electric Equipment |
| CN108612962A (en) * | 2018-05-20 | 2018-10-02 | 苏州固特斯电子科技有限公司 | A kind of precision instrument damping base |
| US20190085932A1 (en) * | 2017-09-20 | 2019-03-21 | Zhuzhou Times New Material Technology Co., Ltd | Vibration-damping support device |
| CN208764618U (en) * | 2018-07-19 | 2019-04-19 | 常州基腾电气有限公司 | A kind of erection support of centre collector ring |
-
2020
- 2020-08-07 CN CN202010789101.7A patent/CN112049899A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005171609A (en) * | 2003-12-10 | 2005-06-30 | Oiles Ind Co Ltd | Mounting structure of multi-layer rubber base isolation bearing device |
| CN103925329A (en) * | 2014-04-15 | 2014-07-16 | 加西贝拉压缩机有限公司 | Vibration-damping connecting structure for compressor and refrigerator baseplate |
| CN107327535A (en) * | 2017-05-27 | 2017-11-07 | 上海电力学院 | A kind of laminated type metal-rubber shock isolating pedestal for Substation Electric Equipment |
| US20190085932A1 (en) * | 2017-09-20 | 2019-03-21 | Zhuzhou Times New Material Technology Co., Ltd | Vibration-damping support device |
| CN108612962A (en) * | 2018-05-20 | 2018-10-02 | 苏州固特斯电子科技有限公司 | A kind of precision instrument damping base |
| CN208764618U (en) * | 2018-07-19 | 2019-04-19 | 常州基腾电气有限公司 | A kind of erection support of centre collector ring |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532007A (en) * | 2021-07-23 | 2021-10-22 | 长虹美菱股份有限公司 | Damping callus on sole and refrigerator |
| CN113532007B (en) * | 2021-07-23 | 2023-02-28 | 长虹美菱股份有限公司 | Damping callus on sole and refrigerator |
| CN115163714A (en) * | 2022-05-31 | 2022-10-11 | 哈尔滨工业大学 | Adjustable explosive impact vibration damper for initiating explosive devices |
| CN115163714B (en) * | 2022-05-31 | 2023-12-05 | 哈尔滨工业大学 | Adjustable explosive impact vibration damper for initiating explosive device products |
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Application publication date: 20201208 |
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