CN210068831U - Variable damping type shock absorber and washing machine with same - Google Patents
Variable damping type shock absorber and washing machine with same Download PDFInfo
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- CN210068831U CN210068831U CN201920495939.8U CN201920495939U CN210068831U CN 210068831 U CN210068831 U CN 210068831U CN 201920495939 U CN201920495939 U CN 201920495939U CN 210068831 U CN210068831 U CN 210068831U
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- piston rod
- damping
- sleeve
- washing machine
- shock absorber
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Abstract
The utility model discloses a variable damping type shock absorber and have washing machine of this shock absorber, shock absorber include sleeve and piston rod, are fixed with damping piece on the sleeve inner wall, and the piston rod is portable to be inserted and to be established in the sleeve and rub mutually with damping piece, and the damping force of shock absorber is variable. When the washing machine resonates, the vibration absorber has large amplitude and large stroke of the piston rod, the piston rod is in contact friction with the first damping part and the second damping part, the friction force is large, the damping force of the vibration absorber is large, the washing machine can be effectively controlled to resonate, the vibration of the washing machine is effectively reduced, and the vibration noise of the washing machine is reduced. When the washing machine is in non-resonance, the vibration amplitude of the vibration absorber is small, the stroke of the piston rod is small, the piston rod only contacts and rubs with the first damping part, the friction force is small, and the damping force of the vibration absorber is small. The vibration absorber of the embodiment can automatically adjust the damping force according to the vibration state of the washing machine, more effectively control the resonance of the washing machine and reduce the vibration noise of the washing machine.
Description
Technical Field
The utility model relates to a washing machine technical field relates to a variable damping type shock absorber and have washing machine of this shock absorber particularly.
Background
The key function of the vibration absorber of the drum washing machine is to control the resonance of a suspension system of the washing machine, the larger the damping of the vibration absorber is, the better the vibration absorber is when the suspension system is in resonance, and the smaller the damping of the vibration absorber is, the better the vibration absorber is when the vibration absorber is not in resonance. The vibration absorber used by the washing machine at present is designed according to the friction energy dissipation principle, the damping force is kept constant in any state, so that vibration energy in non-resonance is transmitted to the washing machine box body excessively by a suspension system, and the box body vibration radiation noise is serious. The dehydration of the washing machine comprises a transition stage from starting to a constant speed and a steady-state stage during the constant speed, the suspension system can inevitably generate resonance in the transition stage, the amplitude is extremely large, if the damping of the shock absorber is insufficient, the serious problem that the outer cylinder collides with the box body can occur, and after the washing machine enters the steady-state stage, the amplitude of the suspension system is small and constant. The shock absorber is mainly used for controlling the resonance of a suspension system, and the larger the damping of the shock absorber is, the better the vibration control effect is. However, if the damping of the shock absorber is too large in the dehydration steady state, the vibration of the suspension system is more transferred to the box body, and the vibration radiation noise of the box body is too large. The vibration damper is designed by utilizing the friction energy dissipation principle, the vibration damper comprises an outer sleeve and an inner piston rod, the inner piston rod is connected with an inner cylinder and an outer cylinder of the washing machine, and the outer sleeve is connected with a box body. When the suspension system vibrates, the piston rod moves axially in the outer sleeve of the shock absorber and rubs with a damping ring arranged in the outer sleeve to dissipate energy, so that the shock absorption effect is achieved. The damping force of the shock absorber is kept constant at any stage, and the vibration noise control requirement of the washing machine cannot be completely met.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a variable damping type shock absorber and have washing machine of this shock absorber to when solving current washing machine resonance and non-resonance state, the damping force of shock absorber maintains unchangeable defect.
Therefore, the utility model provides a variable damping type shock absorber, including sleeve and piston rod, be fixed with the damping piece on the sleeve inner wall, the piston rod is portable to be inserted and is established in the sleeve and with the damping piece rubs mutually, the damping force of shock absorber is variable.
Preferably, the sleeve comprises a first sleeve and a second sleeve, and one end of the first sleeve is connected in the second sleeve; a first damping part and a second damping part are fixed on the inner wall of the first sleeve, and a gap is formed between the first damping part and the second damping part; the piston rod is movably inserted in the first sleeve and the second sleeve; when the shock absorber resonates, the piston rod is in contact friction with the first damping part and the second damping part; when the shock absorber is not resonant, the piston rod is in contact friction with the first damping part.
Preferably, the outer wall of one end of the first sleeve is provided with an external thread, the inner wall of one end of the second sleeve is provided with an internal thread, and one end of the sleeve is in threaded connection with the inside of one end of the second sleeve.
Preferably, the second damping strip is fixed on the inner wall of one end of the first sleeve, and the first damping strip is fixed on the inner wall of the other end of the first sleeve.
Preferably, the distance between the first damping part and the second damping part is 80-100 mm.
Preferably, the length of the piston rod is 120-130mm, and the diameter is 18-20 mm.
The utility model also provides a washing machine, be in including organism and setting cylinder in the organism still includes the shock absorber, the second sleeve with the organism is connected, the piston rod with the cylinder is connected.
Preferably, the damping member is fixed on the inner wall of the open end of the sleeve, the piston rod comprises a first piston rod and a second piston rod, and the diameter of the second piston rod is larger than that of the first piston rod; the diameter of the first piston rod is 19mm, and the diameter of the second piston rod is 19.5-20 mm; a transition rod is arranged between the first piston rod and the second piston rod, the transition rod is in an isosceles trapezoid shape, and the included angle between the waist of the isosceles trapezoid and the horizontal line is 1-5 degrees.
Preferably, the damping piece is fixed on the inner wall of the opening end of the sleeve, the piston rod comprises a first piston rod and a second piston rod, the second piston rod is in an isosceles trapezoid shape, and the included angle between the waist of the isosceles trapezoid and the horizontal line is 1-5 degrees.
Preferably, the length of the second piston rod is 5-10mm, and the sum of the lengths of the first piston rod and the second piston rod is 120-130 mm.
Compared with the prior art, the utility model discloses an advantage is with positive effect: the utility model provides a variable damping type shock absorber and have washing machine of this shock absorber, shock absorber include sleeve and piston rod, are fixed with damping piece on the sleeve inner wall, and the piston rod is portable to be inserted and to establish in the sleeve and rub mutually with damping piece, and the damping force of shock absorber is variable. The sleeve comprises a first sleeve and a second sleeve, and one end of the first sleeve is connected in the second sleeve; a first damping part and a second damping part are fixed on the inner wall of the first sleeve, and a space is formed between the first damping part and the second damping part; the piston rod is movably inserted in the first sleeve and the second sleeve; when the shock absorber resonates, the piston rod is in contact friction with the first damping part and the second damping part; when the shock absorber is not resonant, the piston rod is in contact friction with the first damping part. When the washing machine resonates, the vibration absorber has large amplitude and large stroke of the piston rod, the piston rod is in contact friction with the first damping part and the second damping part, the friction force is large, and the damping force of the vibration absorber is large, so that the vibration absorber can effectively control the resonance of the washing machine, has an effective vibration attenuation effect on the washing machine, and reduces the vibration noise of the washing machine. When the washing machine is in non-resonance, the vibration amplitude of the vibration absorber is small, the stroke of the piston rod is small, the piston rod only contacts and rubs with the first damping part, the friction force is small, and the damping force of the vibration absorber is small. Therefore, the vibration absorber of the embodiment can automatically adjust the damping force according to the vibration state of the washing machine, more effectively control the resonance of the washing machine, play an effective vibration absorption role on the washing machine and reduce the vibration noise of the washing machine.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the variable damping type shock absorber of the present invention;
fig. 2 is a schematic structural view of embodiment 1 of the washing machine of the present invention;
fig. 3 is a schematic structural view of embodiment 2 of the variable damping type shock absorber of the present invention;
fig. 4 is a schematic structural view of embodiment 2 of the transition rod of the variable damping type shock absorber according to the present invention;
fig. 5 is a schematic structural view of embodiment 2 of the washing machine of the present invention;
fig. 6 is a schematic structural view of embodiment 3 of the variable damping type shock absorber of the present invention.
Detailed Description
The following detailed description of the embodiments of the present invention is provided to illustrate and explain the present invention, and it should be understood that the embodiments described herein are only for the purpose of illustration and explanation, and are not intended to limit the present invention.
The utility model discloses a variable damping type shock absorber includes sleeve and piston rod, is fixed with the damping piece on the sleeve inner wall, and the piston rod is portable to be inserted and to be established in the sleeve and rub mutually with the damping piece, and the damping force of shock absorber is variable. The utility model discloses an absorber can be used for washing machine, and when washing machine resonance, the amplitude of absorber is big, and the damping force is big, consequently can control washing machine resonance effectively, plays effectual damping effect to washing machine, reduces washing machine vibration noise. When the washing machine is not in resonance, the vibration amplitude of the vibration absorber is small, and the damping force is small. Therefore, the utility model discloses a shock absorber can be according to the size of washing machine vibration state automatically regulated damping force, controls washing machine resonance more effectively, plays effectual damping effect to washing machine, reduces washing machine vibration noise.
Example 1
As shown in fig. 1, the sleeve of the variable damping type shock absorber of embodiment 1 includes a first sleeve 1 and a second sleeve 2, one end of the first sleeve 1 is connected inside the second sleeve 2, a first damping member 3 and a second damping member 4 are fixed on the inner wall of the first sleeve 1, and a gap is provided between the first damping member 3 and the second damping member 4; the piston rod 5 is movably inserted in the first sleeve 1 and the second sleeve 2; when the shock absorber resonates, the piston rod 5 is in contact friction with the first damping part 3 and the second damping part 4; when the shock absorber is not resonant, the piston rod 5 is in contact friction with the first damping member 3.
As shown in fig. 2, the washing machine of embodiment 1 includes a rectangular parallelepiped body 14 and a drum 11 disposed in the body 14, and two balance weights 12 are symmetrically disposed on an outer wall of the drum 11 and can be used for balancing the movement of the drum 11. And the device also comprises two hanging springs 13, wherein one end of each hanging spring 13 is connected to one corner of the machine body 14, and the other end of each hanging spring 13 is connected to the outer wall of the roller 11. Two vibration dampers of the present embodiment are further included, wherein the second outer sleeve 2 is connected to one corner of the machine body 14, and the piston rod 5 is connected to the outer wall of the drum 11.
When the washing machine resonates, the vibration absorber has large amplitude, the stroke of the piston rod 5 is large, the piston rod 5 is in contact friction with the first damping part 3 and the second damping part 4, the friction force is large, and the damping force of the vibration absorber is large, so that the vibration absorber can effectively control the resonance of the washing machine, has an effective vibration attenuation effect on the washing machine, and reduces the vibration noise of the washing machine. When the washing machine is in non-resonance, the vibration amplitude of the vibration absorber is small, the stroke of the piston rod 5 is small, the piston rod 5 only contacts and rubs with the first damping part 3, the friction force is small, and the damping force of the vibration absorber is small. Therefore, the vibration absorber of the embodiment can automatically adjust the damping force according to the vibration state of the washing machine, more effectively control the resonance of the washing machine, play an effective vibration absorption role on the washing machine and reduce the vibration noise of the washing machine.
The first sleeve 1 and the second sleeve 2 are both cylindrical, the left end and the right end of the first sleeve 1 are both open, and the right end of the second sleeve 2 is open; the outer wall of the left end of the first sleeve 1 is provided with external threads (not shown in the figure), the inner wall of the right of the second sleeve 2 is provided with internal threads (not shown in the figure), and the left end of the first sleeve 1 is in threaded connection with the inside of the right end of the second sleeve 2. The piston rod 5 is inserted into the first sleeve 1 and the second sleeve 2 from the right end of the first sleeve 1.
The second damping strip 4 is fixed on the inner wall of the left end of the first sleeve 1, and the first damping strip 3 is fixed on the inner wall of the right end of the first sleeve 1. In this embodiment, the inner wall of the left end and the inner wall of the right end of the first sleeve 1 are respectively provided with an annular groove (not shown in the figure), the second damping strip 4 is fixed in the annular groove of the inner wall of the left end, and the first damping strip 3 is fixed in the annular groove of the inner wall of the right end.
The first damping part 3 and the second damping part 4 are both made of PU materials, and the widths of the first damping part 3 and the second damping part 4 are respectively 10-12 mm.
The distance L between the first damper 3 and the second damper 41Is 80-100mm, and can be adjusted and set according to parameters such as design load, rotating speed and the like of the washing machine, and is not specifically set. The distance can meet the condition that the piston rod is in contact friction with the first damping part 3 and the second damping part 4 during resonance, and the piston rod 5 is only in contact friction with the first damping part 3 during non-resonance.
Length L of piston rod 52Is 120-130mm, and the diameter is 18-20 mm; the length and diameter of the piston rod 5 can satisfy the condition that the piston rod is in contact friction with the first damping part 3 and the second damping part 4 during resonance, and the piston rod 5 is only in contact friction with the first damping part 3 during non-resonance.
Example 2
As shown in fig. 3 and 4, in the shock absorber according to embodiment 2, the damping member 6 is fixed on the inner wall of the opening end of the sleeve 7, the piston rod includes a first piston rod 8 and a second piston rod 9, the diameter of the second piston rod 9 is larger than that of the first piston rod 8, the diameter of the first piston rod 8 is 19mm, the diameter of the second piston rod 9 is 19.5-20mm, a transition rod 10 is disposed between the first piston rod 8 and the second piston rod 9, the transition rod 10 is in the shape of an isosceles trapezoid, and the included angle α between the waist of the isosceles trapezoid and the horizontal line is 1-5 °.
Length L of the second piston rod 945-10mm, the sum L of the lengths of the first piston rod 8 and the second piston rod 93+L4Is 120-130 mm.
As shown in fig. 5, the washing machine of embodiment 2 includes a rectangular parallelepiped body 14 and a drum 11 disposed in the body 14, and two balance weights 12 are symmetrically disposed on an outer wall of the drum 11 and can be used for balancing the movement of the drum 11. And the device also comprises two symmetrically arranged hanging springs 13, wherein one end of each hanging spring 13 is connected with one corner of the machine body 14, and the other end of each hanging spring 13 is connected with the outer wall of the roller 11. The vibration absorber of the embodiment is further included, the two vibration absorbers are symmetrically arranged, the sleeve 7 is connected to one corner of the machine body 14, and the second piston rod 9 is connected to the outer wall of the roller 11.
When the washing machine resonates, the vibration absorber has large amplitude, the first piston rod 8 and the second piston rod 9 are in contact friction with the damping piece 6, the diameter of the second piston rod 9 is larger than that of the first piston rod 8, the friction force between the second piston rod 9 and the damping piece 6 is larger than that between the first piston rod 8 and the damping piece 6, and the damping force of the vibration absorber is large, so that the resonance of the washing machine can be effectively controlled, an effective vibration attenuation effect is realized on the washing machine, and the vibration noise of the washing machine is reduced. When the washing machine is not in resonance, the vibration amplitude of the vibration absorber is small, only the first piston rod 8 is in contact friction with the damping piece 6, and the damping force of the vibration absorber is small. Therefore, the vibration absorber of the embodiment can automatically adjust the damping force according to the vibration state of the washing machine, more effectively control the resonance of the washing machine, play an effective vibration absorption role on the washing machine and reduce the vibration noise of the washing machine.
Example 3
As shown in fig. 6, in the shock absorber according to embodiment 3, the damping member 6 is fixed to the inner wall of the opening end of the sleeve 7, the piston rod includes a first piston rod 8 and a second piston rod 9, the second piston rod 9 is shaped like an isosceles trapezoid, and the included angle between the waist of the isosceles trapezoid and the horizontal line is 1-5 °.
Length L of the second piston rod 945-10mm, the sum L of the lengths of the first piston rod 8 and the second piston rod 93+L4Is 120-130 mm.
The damper of embodiment 3 is used for a washing machine, the washing machine includes a rectangular parallelepiped body 14 and a drum 11 disposed in the body 14, and two weights 12 are symmetrically disposed on an outer wall of the drum 11 and can be used for balancing the movement of the drum 11. And the device also comprises two symmetrically arranged hanging springs 13, wherein one end of each hanging spring 13 is connected with one corner of the machine body 14, and the other end of each hanging spring 13 is connected with the outer wall of the roller 11. The vibration absorber of the embodiment is further included, the two vibration absorbers are symmetrically arranged, the sleeve 7 is connected to one corner of the machine body 14, and the second piston rod 9 is connected to the outer wall of the roller 11.
When the washing machine resonates, the vibration absorber has large amplitude, the first piston rod 8 and the second piston rod 9 are in contact friction with the damping piece 6, the second piston rod 9 is in an isosceles trapezoid shape, the friction force between the second piston rod 9 and the damping piece 6 is larger than the friction force between the first piston rod 8 and the damping piece 6, and the damping force of the vibration absorber is large, so that the resonance of the washing machine can be effectively controlled, an effective vibration attenuation effect is realized on the washing machine, and the vibration noise of the washing machine is reduced. When the washing machine is not in resonance, the vibration amplitude of the vibration absorber is small, only the first piston rod 8 is in contact friction with the damping piece 6, and the damping force of the vibration absorber is small. Therefore, the vibration absorber of the embodiment can automatically adjust the damping force according to the vibration state of the washing machine, more effectively control the resonance of the washing machine, play an effective vibration absorption role on the washing machine and reduce the vibration noise of the washing machine.
The left and right directions defined by the present invention are determined by the view relationship shown in fig. 1, which is only for clearly explaining the position and connection relationship of each component, and is not limited to this embodiment.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.
Claims (10)
1. A variable damping type shock absorber is characterized in that,
the damping device comprises a sleeve and a piston rod, wherein a damping piece is fixed on the inner wall of the sleeve, the piston rod is movably inserted into the sleeve and rubs with the damping piece, and the damping force of the shock absorber is variable.
2. The variable damping type shock absorber according to claim 1,
the sleeve comprises a first sleeve and a second sleeve, and one end of the first sleeve is connected in the second sleeve; a first damping part and a second damping part are fixed on the inner wall of the first sleeve, and a gap is formed between the first damping part and the second damping part; the piston rod is movably inserted in the first sleeve and the second sleeve;
when the shock absorber resonates, the piston rod is in contact friction with the first damping part and the second damping part; when the shock absorber is not resonant, the piston rod is in contact friction with the first damping part.
3. The variable damping type shock absorber according to claim 2,
the outer wall of one end of the first sleeve is provided with an external thread, the inner wall of one end of the second sleeve is provided with an internal thread, and one end of the sleeve is in threaded connection with the inside of one end of the second sleeve.
4. The variable damping type shock absorber according to claim 2,
the second damping strip is fixed on the inner wall of one end of the first sleeve, and the first damping strip is fixed on the inner wall of the other end of the first sleeve.
5. The variable damping type shock absorber according to claim 2,
the distance between the first damping part and the second damping part is 80-100 mm.
6. The variable damping type shock absorber according to claim 2,
the length of the piston rod is 120 mm and 130mm, and the diameter of the piston rod is 18-20 mm.
7. The variable damping type shock absorber according to claim 1,
the damping piece is fixed on the inner wall of the opening end of the sleeve,
the piston rod comprises a first piston rod and a second piston rod, and the diameter of the second piston rod is larger than that of the first piston rod; the diameter of the first piston rod is 19mm, and the diameter of the second piston rod is 19.5-20 mm;
a transition rod is arranged between the first piston rod and the second piston rod, the transition rod is in an isosceles trapezoid shape, and the included angle between the waist of the isosceles trapezoid and the horizontal line is 1-5 degrees.
8. The variable damping type shock absorber according to claim 1,
the damping piece is fixed on the inner wall of the opening end of the sleeve,
the piston rod comprises a first piston rod and a second piston rod, the second piston rod is in an isosceles trapezoid shape, and the included angle between the waist of the isosceles trapezoid and the horizontal line is 1-5 degrees.
9. Variable damping type shock absorber according to claim 7 or 8,
the length of the second piston rod is 5-10mm, and the sum of the lengths of the first piston rod and the second piston rod is 120-130 mm.
10. A washing machine comprises a machine body and a roller arranged in the machine body, and is characterized in that,
further comprising a damper according to any one of claims 2-6, said second sleeve being connected to said housing and said piston rod being connected to said drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920495939.8U CN210068831U (en) | 2019-04-12 | 2019-04-12 | Variable damping type shock absorber and washing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920495939.8U CN210068831U (en) | 2019-04-12 | 2019-04-12 | Variable damping type shock absorber and washing machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068831U true CN210068831U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920495939.8U Expired - Fee Related CN210068831U (en) | 2019-04-12 | 2019-04-12 | Variable damping type shock absorber and washing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068831U (en) |
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2019
- 2019-04-12 CN CN201920495939.8U patent/CN210068831U/en not_active Expired - Fee Related
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Granted publication date: 20200214 |
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