A shock absorbing suspension spring for washing machine

Abstract

The utility model relates to the technical field of shock-absorbing suspension springs, and discloses a shock-absorbing suspension spring for a washing machine, including a cylinder and a piston valve rod, a lower suspension hook ring is fixedly installed at the bottom of the cylinder, a linkage block is movably connected to the lower suspension hook ring, and the linkage block is movably connected to a connecting pin shaft seat through a torsion spring shaft, a fixed block is fixedly connected to the top of the piston valve rod, an upper suspension hook ring is fixedly installed on the top of the fixed block, and a spring is provided on the outer wall of the piston valve rod. The utility model designs a telescopic bag cover, which will perform telescopic movement between the cylinder and the piston valve rod according to the expansion and contraction of the spring, thereby playing a good role in protecting the spring and avoiding problems such as rust and oxidation. The telescopic bag cover is designed, and a vent hole is provided on the telescopic bag cover, so that the exchange of internal and external gases can be promoted well during the telescopic movement of the telescopic bag cover.

Description

Technical Field

[0001] The utility model relates to the technical field of shock-absorbing suspension springs, in particular to a shock-absorbing suspension spring for a washing machine. Background Art

[0002] A washing machine generally includes a washing tub and a housing. The washing tub will shake during washing, especially during dehydration, so the washing tub is generally connected to the housing through a suspension spring. The outer drum of the washing machine is suspended inside the housing, generally supported by two suspension springs and a lower shock absorber. The suspension spring is directly suspended with the inner outer drum and the outer shell when in use.

[0003] In the prior art, a utility model patent with publication number CN216919749U proposes a shock-absorbing suspension spring for a drum washing machine. The spring is provided with a buffer sliding assembly. When the shock-absorbing spring body shakes greatly, the slider on the ring buckle slides in the limit groove. This operation can protect the washing machine shell and the internal outer drum, extend the service life of the drum washing machine, and provide a disassembly assembly. When the ring hook or the shock-absorbing spring body is replaced later, they can be replaced separately without replacing the entire body.

[0004] In the above technical solution, the spring is exposed during use, which is prone to rust, oxidation and other problems that may cause damage, and the spring has poor stability. When subjected to tension or large shaking, the spring rebounds too quickly, which easily increases the repeated bouncing process of the spring, affecting the safe use of the washing machine. Utility Model Content

[0005] The utility model aims to provide a shock-absorbing suspension spring for a washing machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shock-absorbing suspension spring for a washing machine, comprising a cylinder and a piston valve rod, a lower suspension hook ring being fixedly installed at the bottom of the cylinder, a linkage block being movably connected to the lower suspension hook ring, and the linkage block being movably connected to a connecting pin shaft seat through a torsion spring shaft, a fixed block being fixedly connected to the top of the piston valve rod, an upper suspension hook ring being fixedly installed on the top of the fixed block, a spring being sleeved on the outer wall of the piston valve rod, one end of the spring being fixedly connected to the bottom of the fixed block, and the other end of the spring being fixedly connected to the cylinder, and a structural component being arranged inside the cylinder.

[0007] Preferably, the structural assembly specifically includes the following structures: a telescopic bag cover, which is arranged between the cylinder and the fixed block, and has a vent hole on the telescopic bag cover; an annular groove seat, which is fixedly sleeved on the outer wall of the cylinder; and a sealing ring, which is integrally installed on the outer wall of the piston valve stem.

[0008] Preferably, the top of the telescopic bag cover is fixedly connected to the bottom of the fixed block, the bottom of the telescopic bag cover is fixedly connected with a fixing ring, an open buckle ring is fixedly installed on the inner side of the fixing ring, and the open buckle ring is engaged in the annular groove seat.

[0009] Preferably, the outer wall of the sealing ring is sealed with the inner wall of the cylinder.

[0010] Preferably, a piston is provided at the bottom end of the piston valve stem, an upper hydraulic oil chamber is formed between the piston and the sealing ring, and a lower hydraulic oil chamber is formed between the piston and the cylinder.

[0011] Preferably, the piston includes a piston valve block 1 and a piston valve block 3, wherein the piston valve block 1 is fixedly sleeved on the bottom end wall of the piston valve stem, and the piston valve block 3 is fixedly sleeved on the bottom end of the piston valve stem, and a friction chamber is provided on the contact surface between the piston valve block 3 and the inner wall of the cylinder.

[0012] Preferably, a piston valve block 2 is arranged between the piston valve block 1 and the piston valve block 3, a connecting compression spring 1 is fixedly connected between the piston valve block 1 and the piston valve block 3 at equidistant intervals around the circumference, and a connecting compression spring 2 is fixedly connected between the piston valve block 2 and the piston valve block 3 at equidistant intervals around the circumference; an oil circulation hole is opened between the piston valve block 1, the piston valve block 2 and the piston valve block 3.

[0013] Preferably, a bottom valve seat is fixedly mounted on the bottom of the inner wall of the cylinder, a flow hole is provided on the bottom valve seat, an oil storage chamber is provided on the cylinder, and the flow hole is communicated with the oil storage chamber.

[0014] The utility model provides a shock-absorbing suspension spring for a washing machine, which has the following beneficial effects:

[0015] (1) The utility model designs a telescopic bag cover, which can perform telescopic movement between the cylinder and the piston valve stem according to the expansion and contraction of the spring, thereby playing a good role in protecting the spring and avoiding problems such as rust and oxidation. The telescopic bag cover is designed to have a vent hole, so that the internal and external gases can be exchanged well during the telescopic movement of the telescopic bag cover.

[0016] (2) The utility model designs oil flow holes on the piston. The holes are very small and evenly distributed around the circumference, which can limit the flow rate. Therefore, the speed of the piston rising and falling will not be too fast, and the rebound speed of the spring will not be too fast, which can effectively reduce the repeated bouncing process of the spring. Among them, by setting a friction chamber 226, it is filled with a damping medium, such as a damping plate. The sandwich layer material is more commonly used. Butyl, acrylate, polysulfide, nitrile and silicone rubber, polyurethane, polyvinyl chloride and epoxy resin, etc. This type of material can meet the use requirements within the range of -50 to 200°C, can increase damping, absorb vibration energy, and can effectively help the piston to slow down the vibration generated by the spring during the up and down movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0018] Figure 2 This is a bottom view of the overall structure of the utility model;

[0019] Figure 3 This is a cross-sectional view of the overall structure of the utility model;

[0020] Figure 4 For this utility model Figure 3 A magnified view of center.

[0021] In the figure: 111 cylinder, 112 lower suspension hook, 113 linkage block, 114 torsion spring shaft, 115 connecting pin shaft seat, 116 fixed block, 117 upper suspension hook, 118 piston valve stem, 119 spring, 2 structural components, 211 telescopic bag cover, 212 fixed ring, 213 open buckle foot ring, 214 annular groove seat, 215 sealing ring, 221 piston valve block one, 222 piston valve block two, 223 piston valve block three, 224 connecting compression spring one, 225 connecting compression spring two, 226 friction chamber, 227 oil flow hole, 231 bottom valve seat, 232 flow hole, 233 oil storage chamber, 234 hydraulic oil upper chamber, 235 hydraulic oil lower chamber. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention. Example

[0024] A preferred embodiment of a washing machine shock absorbing suspension spring provided by the utility model is as follows: Figure 1-4 As shown: a shock-absorbing suspension spring for a washing machine, comprising a cylinder 111 and a piston valve rod 118, a lower suspension hook ring 112 is fixedly installed at the bottom of the cylinder 111, a linkage block 113 is movably connected to the lower suspension hook ring 112, and the linkage block 113 is movably connected to a connecting pin shaft seat 115 through a torsion spring shaft 114, a fixing block 116 is fixedly connected to the top of the piston valve rod 118, an upper suspension hook ring 117 is fixedly installed on the top of the fixing block 116, a spring 119 is sleeved on the outer wall of the piston valve rod 118, one end of the spring 119 is fixedly connected to the bottom of the fixing block 116, and the other end of the spring 119 is fixedly connected to the cylinder 111, and a structural component 2 is arranged inside the cylinder 111;

[0025] The structural component 2 specifically includes the following structures: a telescopic bag cover 211, which is arranged between the cylinder 111 and the fixed block 116, and a vent hole is provided on the telescopic bag cover 211; an annular groove seat 214, which is fixedly sleeved on the outer wall of the cylinder 111; a sealing ring 215, which is integrally installed on the outer wall of the piston valve stem 118; the top of the telescopic bag cover 211 is fixedly connected to the bottom of the fixed block 116, and the bottom of the telescopic bag cover 211 is fixedly connected with a fixing ring 212, and an open-type buckle foot ring 213 is fixedly installed on the inner side of the fixing ring 212, and the open-type buckle foot ring 213 is engaged with the annular groove seat 214; the outer wall of the sealing ring 215 is sealed with the inner wall of the cylinder 111.

[0026] In this embodiment, by designing the telescopic bag cover 211, the telescopic bag cover 211 will perform telescopic movement between the cylinder 111 and the piston valve stem 118 according to the expansion and contraction of the spring 119, thereby playing a good role in protecting the spring 119 and avoiding problems such as rust and oxidation.

[0027] In this embodiment, the telescopic bag cover 211 is designed so that ventilation holes are provided on the telescopic bag cover 211 . Therefore, during the telescopic movement of the telescopic bag cover 211 , the exchange of internal and external gases can be effectively promoted.

[0028] In this embodiment, by designing an open buckle foot ring 213 that is engaged with the annular groove seat 214, the bottom of the bellows bag cover 211 can be disassembled in the form of a buckle, making it easy to clean the bellows bag cover 211. Example

[0029] See also Figure 1-Figure 4 , and on the basis of Example 1, it is further obtained that: a piston is provided at the bottom end of the piston valve rod 118, an upper hydraulic oil chamber 234 is formed between the piston and the sealing ring 215, and a lower hydraulic oil chamber 235 is formed between the piston and the cylinder 111;

[0030] The piston includes a piston valve block 1 221 and a piston valve block 3 223. The piston valve block 1 221 is fixedly sleeved on the bottom end wall of the piston valve rod 118, and the piston valve block 3 223 is fixedly sleeved on the bottom end of the piston valve rod 118. A piston valve block 2 222 is arranged between the piston valve block 1 221 and the piston valve block 3 223; a connecting compression spring 1 224 is fixedly connected between the piston valve block 1 221 and the piston valve block 3 223 at equidistant intervals, and a connecting compression spring 225 is fixedly connected between the piston valve block 2 222 and the piston valve block 3 223 at equidistant intervals; a friction chamber 226 is provided on the contact surface between the piston valve block 3 223 and the inner wall of the cylinder 111; an oil flow hole 227 is provided between the piston valve block 1 221, the piston valve block 2 222 and the piston valve block 3 223;

[0031] In this embodiment, by designing oil flow holes 227 on the piston, the holes are very small and evenly distributed around the circumference, which can limit the flow rate. Therefore, the piston can be lifted and lowered not too fast, and the spring 119 can also rebound not too fast, which can effectively reduce the repeated bouncing process of the spring 119.

[0032] In this embodiment, a friction chamber 226 is provided, which is filled with a damping medium, such as a damping plate, a sandwich layer material, and more commonly used materials include butyl, acrylate, polysulfide, nitrile and silicone rubber, polyurethane, polyvinyl chloride and epoxy resin. Such materials can meet the use requirements within the range of -50 to 200°C, can increase damping, absorb vibration energy, and can effectively help the piston to mitigate the vibration generated by the spring 119 during the up and down movement.

[0033] A bottom valve seat 231 is fixedly mounted on the bottom of the inner wall of the cylinder 111 . A flow hole 232 is formed on the bottom valve seat 231 . An oil storage chamber 233 is formed on the cylinder 111 . The flow hole 232 and the oil storage chamber 233 are in communication.

[0034] When in use, hang the hanging hook 117 on the outer drum of the washing machine, and install the connecting pin shaft seat 115 on the inner wall of the washing machine shell. When vibration is generated, when the piston valve rod 118 moves downward in the cylinder 111, the piston valve rod 118 drives the piston to move downward, and a small part of the hydraulic oil in the hydraulic oil lower chamber 235 will be evacuated from the oil flow hole 227 to the hydraulic oil upper chamber 234, and most of the hydraulic oil will be squeezed from the flow hole 232 to the oil storage chamber 233. In this process, the medium in the friction chamber 226, such as the damping plate, the sandwich layer material, the more commonly used are butyl, acrylate, polysulfide, nitrile and silicone rubber, polyurethane, polychloride Ethylene and epoxy resin, etc., such materials can meet the use requirements within the range of -50 to 200°C, can increase damping, absorb vibration energy, and can effectively help the piston to mitigate the vibration generated by the spring 119 during the up and down movement; conversely, when the piston valve stem 118 moves upward in the cylinder 111, the piston valve stem 118 drives the piston to move upward, and the hydraulic oil in the oil storage chamber 233 is pumped into the hydraulic oil lower chamber 235, and the hydraulic oil in the hydraulic oil upper chamber 234 is evacuated from the oil flow hole 227 to the hydraulic oil lower chamber 235, and the remaining positions in the oil storage chamber 233 are filled with nitrogen, thereby achieving a shock absorbing effect.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A washing machine shock-absorbing suspension spring, comprising a cylinder (111) and a piston valve stem (118), characterized in that: A lower hanging hook ring (112) is fixedly mounted on the bottom of the cylinder barrel (111), a linkage block (113) is movably connected to the lower hanging hook ring (112), and the linkage block (113) is movably connected to a connecting pin shaft seat (115) via a torsion spring shaft (114), a top end of the piston valve rod (118) is fixedly connected to a fixing block (116), and an upper hanging hook ring (117) is fixedly mounted on the top of the fixing block (116), an outer wall of the piston valve rod (118) is sleeved with a spring (119), one end of the spring (119) is fixedly connected to the bottom of the fixing block (116), and the other end of the spring (119) is fixedly connected to the cylinder barrel (111), and a structural component (2) is arranged inside the cylinder barrel (111).

2. A washing machine shock absorbing suspension spring according to claim 1, characterized in that: The structural assembly (2) specifically comprises the following structures: a telescopic bag cover (211), which is arranged between the cylinder barrel (111) and the fixed block (116), and a vent hole is provided on the telescopic bag cover (211); an annular groove seat (214), which is fixedly sleeved on the outer wall of the cylinder barrel (111); and a sealing ring (215), which is integrally mounted on the outer wall of the piston valve stem (118).

3. A washing machine shock absorbing suspension spring according to claim 2, characterized in that: The top of the telescopic bag cover (211) is fixedly connected to the bottom of the fixed block (116); the bottom of the telescopic bag cover (211) is fixedly connected to a fixing ring (212); an open-type buckle foot ring (213) is fixedly installed on the inner side of the fixing ring (212); and the open-type buckle foot ring (213) is engaged with the annular groove seat (214).

4. A washing machine shock absorbing suspension spring according to claim 2, characterized in that: The outer wall of the sealing ring (215) is sealed with the inner wall of the cylinder (111).

5. The shock-absorbing suspension spring for a washing machine according to claim 1, characterized in that: A piston is provided at the bottom end of the piston valve rod (118); an upper hydraulic oil chamber (234) is formed between the piston and the sealing ring (215); and a lower hydraulic oil chamber (235) is formed between the piston and the cylinder barrel (111).

6. A washing machine shock absorbing suspension spring according to claim 5, characterized in that: The piston comprises a piston valve block 1 (221) and a piston valve block 3 (223); the piston valve block 1 (221) is fixedly sleeved on the bottom end wall of the piston valve rod (118); the piston valve block 3 (223) is fixedly sleeved on the bottom end of the piston valve rod (118); and a friction chamber (226) is provided on the contact surface between the piston valve block 3 (223) and the inner wall of the cylinder barrel (111).

7. A washing machine shock absorbing suspension spring according to claim 6, characterized in that: A piston valve block 2 (222) is arranged between the piston valve block 1 (221) and the piston valve block 3 (223); a connecting compression spring 1 (224) is fixedly connected between the piston valve block 1 (221) and the piston valve block 3 (223) at equal intervals in the circumference; a connecting compression spring 2 (225) is fixedly connected between the piston valve block 2 (222) and the piston valve block 3 (223) at equal intervals in the circumference; and an oil flow hole (227) is provided between the piston valve block 1 (221), the piston valve block 2 (222) and the piston valve block 3 (223).

8. The shock-absorbing suspension spring for a washing machine according to claim 1, characterized in that: A bottom valve seat (231) is fixedly mounted on the bottom of the inner wall of the cylinder (111), a flow hole (232) is provided on the bottom valve seat (231), an oil storage chamber (233) is provided on the cylinder (111), and the flow hole (232) and the oil storage chamber (233) are in communication.

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