Damping element and high-pressure cleaning machine

Abstract

The utility model relates to a damping element and a high pressure washer, the damping element is installed between a shell and a pump assembly of the high pressure washer, the damping element comprises an approximately elliptical base, a first ring body and a second ring body, the first ring body and the second ring body extend from the base along the axial direction, the first ring body and the second ring body are spaced at an interval, and an installation gap is formed between the first ring body and the second ring body; the damping element is provided with a first channel penetrating through the base and the first ring body and a second channel penetrating through the base, and the second channel is located between the first ring body and the second ring body and communicates with the mounting gap. By the adoption of the damping element, the anti-vibration performance of the high-pressure cleaning machine can be improved, and the experience feeling and the comfort degree of operating the high-pressure cleaning machine by a user can be improved.

Description

[TECHNICAL FIELD]

[0001] The utility model relates to electric tool technical field, especially a kind of damping element and high-pressure cleaning machine using the damping element. [BACKGROUND]

[0002] High-pressure cleaning machine is widely used in cleaning vehicle, yard, ground etc., and its working principle is generally that motor assembly drives plunger reciprocating motion, forms high-pressure water in pump and sprays to outside through spray head, to achieve the purpose of washing articles.

[0003] High-pressure cleaning machine in use process, its internal motor high-speed operation and plunger reciprocating motion will inevitably produce persistent vibration, these vibrations will be directly transmitted to the hand of user through pump body and the shell of high-pressure cleaning machine, reduce the operation experience and comfort of user;Not only this, bad operation experience makes user difficult to concentrate, and then reduce the efficiency of cleaning operation.

[0004] In view of this, it is necessary to provide an improved damping element and high-pressure cleaning machine to overcome the defects of prior art. [UTILITY MODEL CONTENTS]

[0005] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a damping element and high-pressure cleaning machine using the damping element, which is easy to assemble, can improve the anti-vibration performance of high-pressure cleaning machine, and can improve the experience and comfort of user operating high-pressure cleaning machine.

[0006] The utility model solves the prior art problems by adopting the following technical scheme: a damping element, including the base of substantially oval, and the first ring body and the second ring body extending from the base along the axial direction, the first ring body and the second ring body are spaced apart and form an installation gap, the damping element has a first channel penetrating the base and the first ring body and a second channel penetrating the base, the second channel is located between the first ring body and the second ring body and communicates with the installation gap.

[0007] Further improvement scheme is that the first ring body is accommodated in the second ring body.

[0008] Further improvement scheme is that the second channel is located on the radial outer side of the first channel.

[0009] Further improvement scheme is that the damping element has a plurality of wing portions extending from the end face away from the first ring body and the second ring body, and the wing portion is substantially a quarter of oval.

[0010] Further improvement scheme is that a plurality of wing portions are distributed on the outer side of the first channel and the second channel.

[0011] Further improvement is that the center line of the base passes through the first channel and the second channel, and the radial section of the first channel and the second channel is substantially circular.

[0012] The utility model discloses a high pressure cleaning machine, including the shell, the pump assembly of containing in the shell and the water inlet component and the spray pipe component of connecting respectively in the both sides of pump assembly, external water flow from the water inlet component, flow through the pump assembly, and from the spray pipe component, the high pressure cleaning machine includes the damping element of any one of above-mentioned, the damping element is supported between the pump assembly and the shell.

[0013] Further improvement is that the pump assembly has a pump body, a pump body protrusion extending from the outer periphery of the pump body towards the shell, and a receiving groove formed in the interior of the pump body protrusion, the shell has a retaining ring extending from the inner wall towards the pump body, the pump body protrusion is connected with the mounting gap, the first ring body is arranged on the inner side of the receiving groove, and the second ring body is arranged on the inner side of the retaining ring.

[0014] Further improvement is that the shell has a convex rib extending from the axial inner wall of the retaining ring towards the pump body, and the convex rib abuts against the base.

[0015] Further improvement is that the wing portion abuts against the inner wall of the retaining ring.

[0016] Compared with the prior art, the utility model has the beneficial effects that: the damping element is additionally arranged between the pump body and the shell of the high pressure cleaning machine and abuts against the two, which can effectively weaken the strong vibration transmitted to the user's hand due to the operation of the pump assembly, and is beneficial to improving the user's operation comfort and experience; the first gas channel and the second gas channel are arranged on the damping element, which can discharge the water vapor between the pump body and the damping element through the first gas channel and the second gas channel, effectively reducing the influence of the water vapor on the damping element and improving the stability of vibration transmission. [BRIEF DESCRIPTION OF DRAWINGS]

[0017] The specific implementation of the utility model will be further described in combination with the drawings:

[0018] Figure 1 is the perspective view of the high pressure cleaning machine in the utility model;

[0019] Figure 2 is Figure 1 the sectional view of the high pressure cleaning machine shown in the figure;

[0020] Figure 3 is Figure 1 the sectional view of the high pressure cleaning machine from another angle shown in the figure;

[0021] Figure 4 is Figure 3 is an enlarged view of the portion A shown in FIG. 1;

[0022] Figure 5 is Figure 3 is a structural schematic view of the damping element in the portion A shown in FIG. 1;

[0023] Figure 6 is Figure 5 is a sectional view of the damping element shown in FIG. 1;

[0024] Figure 7 is Figure 5 is a schematic view of the damping element from another perspective shown in FIG. 1;

[0025] Figure 8 is Figure 5 is a schematic view of the damping element from yet another perspective shown in FIG. 1.

[0026] Meaning of reference numerals in the drawings:

[0027] high-pressure cleaner 100 housing 1

[0028] main body 11 holding ring 111

[0029] rib 112 grip 12

[0030] battery mounting portion 13 protruding portion 14

[0031] motor assembly 2 motor housing 21

[0032] pump assembly 3 pump body 31

[0033] pump body protrusion 311 accommodating groove 312

[0034] trigger assembly 4 trigger 41

[0035] microswitch 42 link 43

[0036] water inlet assembly 5 spray tube assembly 6

[0037] battery pack 7 protection assembly 8

[0038] damping element 9 base 91

[0039] first ring body 92 second ring body 93

[0040] mounting gap 94 first passage 95

[0041] second passage 96 wing portion 97 [DETAILED DESCRIPTION]

[0042] The terms used in the present application are merely for the purpose of describing specific embodiments, and are not intended to limit the present application. For example, the words "upper", "lower", "front", "back", and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application.

[0043] Please refer to Figures 1 to 3 The embodiment of the present application relates to a high-pressure cleaning machine 100, which is suitable for spraying external water flow after pressurization to clean vehicles, courtyards, ground and the like; the high-pressure cleaning machine 100 comprises a shell 1, a motor assembly 2 accommodated in the shell 1, a pump assembly 3 driven by the motor assembly 2, and a battery pack 71 for supplying energy to the motor assembly 2, and a user can start the high-pressure cleaning machine 100 through a trigger assembly 4.

[0044] Please continue to refer to Figures 1 to 3 The shell comprises a main body portion 11, a holding portion 12 extending from the lower end of the main body portion 11, and a battery mounting portion 13 connected to the lower end of the holding portion 12, and the motor assembly 2 is arranged in the main body portion 11. In this embodiment, the motor assembly 2 is an external rotor motor, which comprises a motor shell 21, a stator accommodated in the motor shell 21, a rotor connected to the motor shell, and a motor shaft fixed to the rotor. A speed reduction mechanism is connected to the lower end of the motor assembly 2, and the power generated by the rotation of the rotor is transmitted to the speed reduction mechanism through the motor shaft.

[0045] The pump assembly 3 has a pump body 31 and a pressure chamber formed in the pump body 31 and extending left and right, and the pump body 31 is connected to the motor shell 21. The pressure chamber is the place where the pump assembly 3 pressurizes the external water flow, and the plunger extends into the pressure chamber and is driven by the speed reduction mechanism to reciprocate in the left-right direction; the lower end and the left end of the pump body 31 are respectively connected to a water inlet assembly 5 and a nozzle assembly 6, and the reciprocating motion of the plunger 32 can suck the external water flow from the water inlet assembly 5, pressurize it, and then spray it outward from the nozzle assembly 6.

[0046] The high-pressure cleaning machine 100 cannot suck the external water flow in the stopped state, and only when the motor assembly 2 and the pump assembly 3 are operated together can the cleaning operation be carried out, and the motor assembly 2 needs to be started by the user operating the trigger system 4. The trigger system 4 comprises a trigger 41 mounted on the main body portion 11 and the holding portion 12, and a switch 42 mounted in the holding portion 12. In this embodiment, the switch 42 is preferably a micro switch; specifically, the trigger 41 is pivotally connected to the main body portion 11, and in the pivoting process, the trigger 41 slides and presses the spring sheet on the switch 42 through the trigger rod, so as to press the button on the switch 42, and then the power supply is connected.

[0047] It is worth mentioning that the user pulls the trigger 41, while also synchronously opens the water inlet valve 36 of the pump assembly 3. Specifically, the pump assembly 3 has a linkage connected to the trigger 41, when the trigger lever 41 rotates counterclockwise, the linkage 43 will correspondingly rotate clockwise, thereby driving the water inlet valve 36 to open to the left; further, the pump unit is provided with a first one-way valve between the water inlet assembly 5 and the pressure chamber, and a second one-way valve 39 between the pressure chamber and the nozzle assembly 6; during the right movement of the plunger, the first one-way valve opens, and the second one-way valve closes, and the external water flow enters the pressure chamber; during the left movement of the plunger 32, the first one-way valve 38 closes, and the second one-way valve 39 opens, and the external water flow is pressurized by the plunger and sprayed from the nozzle assembly 6.

[0048] When the high-pressure cleaner 100 is in cleaning operation, the external water flow touching the object to be cleaned will produce irregular splashing, and even flow into the motor assembly 2 through the air outlet opening on the main body 11. Therefore, the protection assembly 8 is arranged on the convex portion 14 on the upper side of the main body 11 to isolate the splashing water flow. Of course, a gap is reserved on the protection assembly 8 to ensure that the cooling air can flow out of the air outlet.

[0049] When the user holds the high-pressure cleaner 100 for operation, the high-speed rotating motor assembly 3 and the reciprocating plunger will produce strong vibration, which will be directly transmitted to the user's hand through the pump body 31 and the shell 1. Therefore, the damping element 9 is arranged between the shell 1 and the pump body 31 to weaken the vibration. Please refer to Figures 4 to 8 , the damping element 9 is generally cylindrical, including a base 91 and a first ring portion 92 and a second ring portion 93 extending axially from the end face of the base 91, the radial cross sections of the base 91, the first ring portion 92 and the second ring portion 93 are generally elliptical. Turn to Figure 5 , the base 91 is configured as a thin pancake-shaped entity with small thickness in the axial direction, the first ring portion 92 is cylindrical, which extends from the central position of the end face of the base 91; the second ring portion 93 is concentric with the first ring portion 92 and is sleeved on the outside of the first ring portion 92, which extends from the outer edge position of the end face of the base 91, and presents a thin-walled cylindrical shape, and the outer diameter of the first ring portion 92 and the outer diameter of the base 91 are approximately equal; in addition, the first ring portion 92 and the second ring portion 93 are not in abutment with each other, and there is an annular gap between them, which is defined as the mounting gap 94.

[0050] In combination with Figure 5 , Figure 6 and Figure 8The damping element 9 has wing portions 97 extending from the end face of the base 91 away from the first ring portion 92 and the second ring portion 93, the wing portions 97 are substantially quarter-elliptical in shape, there are four of them and they are arranged in a circular array about the center point of the base 91. The installation process of the damping element 9 will be described next, turn to Figure 3 and Figure 4 The pump body 31 is integrally provided with a pump body protrusion 311 on the radially outer side, the pump body protrusion 311 is substantially cylindrical in shape, it is recessed inward from the radially outer end face to form a receiving groove 312; in addition, the inner wall of the main body portion 11 is provided with a retaining ring 111 corresponding to the pump body protrusion 311, the inner diameter of the retaining ring 111 is set to be larger than the outer diameter of the pump body protrusion 311, the inside of the retaining ring 111 accommodates a protruding rib 112 protruding from the inner wall of the main body portion.

[0051] When the damping element 9 is fixed, the outer peripheral wall of the second ring body 93 and the inner peripheral wall of the retaining ring 111 are in interference abutment, the first ring body 92 is accommodated in the receiving groove 312 and its outer peripheral wall is in interference abutment with the inner peripheral wall of the pump body protrusion 311; in addition, the pump body protrusion 311 extends into the installation gap 94 and abuts against the base 91. Correspondingly, the axially outer end face of the wing portion 97 and the axially inner wall of the retaining ring 111 are in interference abutment, the axially end face of the protruding rib 112 and the base 91 are in interference abutment, and at the same time the protruding rib 112 is located inside the four wing portions 97.

[0052] Although the above design can effectively absorb the vibration transmitted from the pump body 31 to the main body portion 11, if there is water vapor between the damping element 9 and the pump body protrusion 311, the water vapor will cause local deformation of the damping element 9, and thus the damping element 9 cannot effectively weaken the relatively strong vibration. Moreover, the deformation of the damping element 9 also makes the transmission of vibration irregular, that is, the user's hand will sometimes feel strong vibration and sometimes feel relatively weak vibration, which further aggravates the user's operation discomfort.

[0053] In combination with Figures 5 to 8 To deal with the above phenomenon, the damping element 9 in this embodiment is provided with a first channel 95 penetrating the base 91 and the first ring body 92 and a second channel 96 penetrating the base 91. The radial cross section of the first channel 95 and the second channel 96 is substantially circular, the second channel 96 is located radially outward of the first channel 95 and communicates with the installation gap 94, and the first channel 95 and the second channel 96 are both located radially inside the wing portion 94; in addition, the center line on the end face of the base 91 passes through the center points of the four gas channels, that is, the four gas channels are arranged in a straight line and have equal center distances between each other. This arrangement makes the arrangement of the four gas channels compact, and thus the overall size of the damping element 9 can be limited.

[0054] In this way, even if the water vapor is in the accommodation groove 312 during the operation of the high-pressure cleaning machine 100, the water vapor can flow through the first channel 96, then be deflected into the second gas channel 931, flow out from the installation gap 94, then enter the space between the shell 1 and the pump body 31, and finally be carried out by the cooling air generated by the motor assembly 2 through the air outlet. Therefore, the probability of the damping element 9 being affected by the water vapor is greatly reduced, and the user perceives the vibration to be relatively slight and regular.

[0055] The utility model is not limited to the above specific implementation. Those skilled in the art can easily understand that the utility model has many alternative solutions without departing from the principles and categories of the utility model. The protection scope of the utility model is subject to the content of the claims.

Claims

1. A vibration damping element, comprising a generally elliptical base and a first ring and a second ring extending axially from the base, the first ring and the second ring being spaced apart and forming an installation gap; characterized in that: The vibration damping element has a first channel penetrating the base and the first ring body and a second channel penetrating the base, the second channel being located between the first ring body and the second ring body and communicating with the mounting gap.

2. The vibration damping element according to claim 1, characterized in that: The first ring body is housed within the second ring body.

3. The vibration damping element according to claim 1, characterized in that: The second channel is located radially outside the first channel.

4. The vibration damping element according to claim 3, characterized in that: The vibration damping element has a plurality of wings extending from the end face away from the first ring body and the second ring body, the wings being approximately quarter-elliptical in shape.

5. The vibration damping element according to claim 4, characterized in that: Multiple wings are distributed around the outside of the first channel and the second channel.

6. The vibration damping element according to claim 5, characterized in that: The centerline of the base passes through the first channel and the second channel, and the radial cross-sections of the first channel and the second channel are approximately circular.

7. A high-pressure washer, comprising a housing, a pump assembly housed within the housing, and a water inlet assembly and a spray nozzle assembly respectively connected to both sides of the pump assembly, wherein external water flows in through the water inlet assembly, passes through the pump assembly, and exits from the spray nozzle assembly; characterized in that: The high-pressure cleaner includes a vibration damping element as described in any one of claims 1-6, the vibration damping element being supported between the pump assembly and the housing.

8. The high-pressure cleaner according to claim 7, characterized in that: The pump assembly has a pump body, a pump body protrusion extending from the outer peripheral surface of the pump body toward the housing, and a receiving groove formed inside the pump body protrusion. The housing has a retaining ring extending from the inner wall toward the pump body. The pump body protrusion is connected to the mounting gap. The first ring is disposed inside the receiving groove, and the second ring is disposed inside the retaining ring.

9. The high-pressure cleaner according to claim 8, characterized in that: The housing has a rib extending from the axial inner wall of the retaining ring toward the pump body, the rib abutting against the base.

10. The high-pressure cleaner according to claim 9, characterized in that: The wing abuts against the inner wall of the retaining ring.

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