CN215927742U

CN215927742U - Hand-held cleaning machine

Info

Publication number: CN215927742U
Application number: CN202121638020.3U
Authority: CN
Inventors: 傅珂珂; 李进
Original assignee: Yongkang Guangyi Technology Co ltd
Current assignee: Zhejiang Qianji Intelligent Technology Co Ltd
Priority date: 2021-07-19
Filing date: 2021-07-19
Publication date: 2022-03-01
Anticipated expiration: 2031-07-19

Abstract

The utility model relates to a hand-held cleaning machine, comprising: the device comprises a shell, a reciprocating mechanism, a driving assembly and a water pump assembly. The reciprocating mechanism comprises a reciprocating shaft, a sleeve and a first guide assembly, and the driving assembly is used for driving the reciprocating shaft to rotate so as to enable the sleeve to reciprocate along the length direction of the reciprocating shaft; the water pump assembly comprises a water inlet part, a pump body and a water outlet part, the pump body is connected with the sleeve, the pump body is communicated between the water inlet part and the water outlet part, and the pump body is used for feeding water from the water inlet part and discharging the water from the water outlet part when moving along the axis of the reciprocating shaft. This hand-held type cleaning machine, owing to adopt the axial rotation of reciprocating shaft to convert telescopic reciprocating motion into, sliding friction changes the static friction into first direction subassembly in the eccentric structure of transmission, is favorable to reducing the partial pressure, reduces power loss, improves transmission efficiency, and then to hand-held type cleaning machine, is favorable to improving the water pressure and the flow of play water, improves hand-held type cleaning machine's use and experiences.

Description

Hand-held cleaning machine

Technical Field

The utility model relates to the technical field of cleaning tools, in particular to a handheld cleaning machine.

Background

With the development of the cleaning tool technology, the technology of a handheld cleaning machine appears, the handheld cleaning machine is cleaning equipment for cleaning dirt such as dirt, oil dirt, sediment and the like on the surface of an object by utilizing water flow pressure, and the handheld cleaning machine is convenient to carry due to handheld use and can meet the cleaning requirement of outdoor activities, so that the handheld cleaning machine is widely applied.

In the traditional technology, the handheld cleaning machine adopts a motor to drive a reduction gearbox, drives an eccentric mechanism to form reciprocating motion, drives a single plunger to do reciprocating motion at a pump body, does work on water, and forms water suction and water outlet, so that the water is sprayed out at high pressure to clean dirt.

However, in the existing handheld cleaning machine, the eccentric mechanism drives the single plunger, and huge eccentric force exists when the single plunger reciprocates in the pump body, so that the squeezing plunger makes sliding friction in the pump body, the transmission efficiency is not high, the overall working efficiency is low, and the loss is large.

SUMMERY OF THE UTILITY MODEL

Therefore, a need exists for a handheld cleaning machine which can effectively improve the transmission efficiency, improve the action efficiency of the pump body, and further improve the cleaning effect of the cleaning machine.

A hand-held cleaning machine comprising: the shell is provided with a mounting cavity; the reciprocating mechanism is arranged in the mounting cavity and comprises a reciprocating shaft, a sleeve and a first guide assembly, the sleeve is sleeved on the reciprocating shaft, a guide part is arranged on the reciprocating shaft, and the sleeve is in guide fit with the guide part through the first guide assembly; the driving assembly is arranged in the mounting cavity and is in driving connection with the reciprocating shaft, and the driving assembly is used for driving the reciprocating shaft to rotate so as to enable the sleeve to reciprocate along the axial direction of the reciprocating shaft; the water pump assembly comprises a water inlet part, a pump body and a water outlet part, the pump body is connected with the sleeve, the pump body is communicated between the water inlet part and the water outlet part, and when the pump body moves along the axis of the reciprocating shaft, the pump body is used for feeding water from the water inlet part and discharging the water from the water outlet part.

In the use process of the handheld cleaning machine, firstly, a water pipe or a water tank is communicated with a water inlet part; then, the driving assembly is operated to drive the reciprocating shaft to rotate, and the sleeve is connected with the first guide assembly due to the guide fit of the first guide assembly and the guide part on the reciprocating shaft, so that the reciprocating shaft of the sleeve can rotate and reciprocate along the length direction of the reciprocating shaft. Because the pump body is connected with the sleeve, the pump body performs piston reciprocating motion in the water pump assembly, water is sucked from the water inlet part and is discharged from the water outlet part. This hand-held type cleaning machine, owing to adopt the axial rotation of reciprocating shaft to convert telescopic reciprocating motion into, sliding friction changes the rolling friction of first direction subassembly into among the traditional eccentric mechanism, is favorable to reducing the partial pressure, reduces the power loss, improves transmission efficiency, and then to hand-held type cleaning machine, is favorable to improving the water pressure and the flow of play water, improves hand-held type cleaning machine's use and experiences.

In one embodiment, the first guiding assembly comprises a first rolling member and a connecting seat, the first rolling member is connected with the sleeve through the connecting seat, and the first rolling member is in rolling fit with the guiding part.

In one embodiment, the guide portion is a guide groove, the guide groove extends along the circumferential direction of the reciprocating shaft and extends along the axial direction of the reciprocating shaft in a reciprocating manner, and the first rolling member is in rolling fit with the guide groove.

In one embodiment, the reciprocating mechanism further comprises a second guide assembly, the second guide assembly is connected with the wall of the installation cavity, and the second guide assembly is in guide fit with the sleeve.

In one embodiment, the second guide assembly comprises a guide plate and a second rolling member, the guide plate is connected with the cavity wall of the installation cavity, the guide plate extends along the length direction of the reciprocating shaft, and the sleeve is in guide fit with the guide plate through the second rolling member.

In one embodiment, the number of the first guide assemblies is at least two, at least two first guide assemblies are arranged at intervals along the circumferential direction of the reciprocating shaft, and the at least two first guide assemblies are in rolling fit with the guide parts.

In one embodiment, the number of the second guide assemblies is at least two, at least two of the second guide assemblies are arranged at intervals along the circumferential direction of the sleeve, and at least two of the second guide assemblies are in rolling fit with the sleeve.

In one embodiment, the pump body comprises a plunger, a first one-way valve, a second one-way valve and a pump body, the plunger is connected with the sleeve, the first one-way valve is communicated between the plunger and the water inlet part, the second one-way valve is communicated between the plunger and the water outlet part, and when the plunger reciprocates, the plunger is used for discharging water from the water inlet part through the first one-way valve and the second one-way valve from the water outlet part.

In one embodiment, the pump body further comprises a third one-way valve and a fourth one-way valve, the third one-way valve is communicated between the plunger and the water inlet part, and the third one-way valve is opposite to the first one-way valve; the fourth one-way valve is communicated between the plunger and the water outlet part, and the direction of the fourth one-way valve is opposite to that of the second one-way valve.

In one embodiment, the driving assembly comprises a reduction gearbox and a driving piece, the driving piece is in driving connection with the reduction gearbox, and the reduction gearbox is in driving connection with the reciprocating shaft.

In one embodiment, the driving assembly further comprises a transmission part, and the reduction box is in transmission connection with the driving part through the transmission part.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a first schematic diagram of an internal structure of a hand-held cleaning machine according to an embodiment;

FIG. 2 is a second schematic diagram of the internal structure of the hand-held cleaning machine according to an embodiment;

FIG. 3 is an exploded view of a reciprocating mechanism according to one embodiment;

figure 4 is an exploded view of the pump body in one embodiment.

Description of reference numerals:

100. a hand-held cleaning machine; 110. a housing; 111. a mounting cavity; 120. a reciprocating mechanism; 121. a reciprocating shaft; 1211. a guide portion; 122. a sleeve; 123. a first guide assembly; 1231. a first rolling member; 1232. a connecting seat; 124. a second guide assembly; 1241. a guide plate; 1242. a second rolling member; 130. a drive assembly; 131. a reduction gearbox; 132. a drive member; 133. a transmission member; 140. a water pump assembly; 141. a water inlet member; 1411. a water inlet quick connector; 142. a pump body; 1421. a plunger; 1422. a first check valve; 1423. a second one-way valve; 1424. a pump body; 1425. a third check valve; 1426. a fourth check valve; 143. and a water outlet member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In one embodiment, referring to fig. 1, fig. 2, fig. 3 and fig. 4, a hand-held washing machine 100 includes: a housing 110, a reciprocating mechanism 120, a driving assembly 130 and a water pump assembly 140. The housing 110 is provided with a mounting cavity 111. The reciprocating mechanism 120 is disposed in the mounting cavity 111, and the reciprocating mechanism 120 includes a reciprocating shaft 121, a sleeve 122 and a first guiding component 123. The sleeve 122 is fitted over the reciprocating shaft 121. The reciprocating shaft 121 is provided with a guide portion 1211, and the sleeve 122 is in guiding fit with the guide portion 1211 through the first guide member 123. The driving assembly 130 is disposed in the mounting cavity 111, the driving assembly 130 is in driving connection with the reciprocating shaft 121, and the driving assembly 130 is configured to drive the reciprocating shaft 121 to rotate, so that the sleeve 122 reciprocates along the length direction of the reciprocating shaft 121. The water pump assembly 140 includes a water inlet 141, a pump body 142, and a water outlet 143. The pump body 142 is connected to the sleeve 122, and the pump body 142 is communicated between the water inlet 141 and the water outlet 143. The pump body 142 serves to intake water from the water intake member 141 and discharge the water from the water discharge member 143 when moving along the axis of the reciprocating shaft 121.

In the use process of the hand-held cleaning machine 100, firstly, a water pipe or a water tank is communicated with the water inlet member 141; then, the driving assembly 130 is operated to drive the reciprocating shaft 121 to rotate, and the sleeve 122 is connected to the first guiding assembly 123 due to the guiding engagement of the first guiding assembly 123 and the guiding portion 1211 on the reciprocating shaft 121, so that the sleeve 122 reciprocates along the length direction of the reciprocating shaft 121 under the rotation of the reciprocating shaft 121. Since the pump body 142 is connected to the sleeve 122, the pump body 142 performs a piston reciprocating motion in the water pump assembly 140, and water is sucked from the water inlet member 141 and discharged from the water outlet member 143. This hand-held type cleaning machine 100, owing to adopt the axial rotation of reciprocating shaft 121 to convert the reciprocating motion into sleeve 122, sliding friction changes the rolling friction of first direction subassembly 123 into in the eccentric mechanism of tradition, is favorable to reducing the partial pressure, and the power loss is reduced improves transmission efficiency, and then to hand-held type cleaning machine 100, is favorable to improving the water pressure and the flow of water, improves hand-held type cleaning machine 100's use and experiences.

The driving assembly 130 is connected to the reciprocating shaft 121 in a driving manner, i.e., the driving assembly 130 is connected to the reciprocating shaft 121, and the driving assembly 130 is used as power to drive the reciprocating shaft 121 to rotate.

It should be noted that, the guiding portion 1211 is guided and engaged with the sleeve 122 through the first guiding assembly 123, it is understood that the sleeve 122 is in interference fit with the guiding portion 1211 through the first guiding assembly 123, such as rolling fit, sliding fit, etc., the guiding portion 1211 guides the first guiding assembly 123, so that the first guiding assembly 123 moves along the contour track of the guiding portion 1211, and the sleeve 122 and the first guiding assembly 123 are relatively static, so that the sleeve 122 moves relative to the guiding portion 1211, and the guiding portion 1211 is circumferentially arranged on the guiding shaft, so that the guiding shaft rotates to make the sleeve 122 reciprocate.

In order to further understand and explain the axial direction of the reciprocating shaft 121, fig. 1 is taken as an example, and the axial direction of the reciprocating shaft 121 is a straight line S in fig. 1₁In the direction indicated by any of the above arrows.

In one embodiment, referring to fig. 1, fig. 2, fig. 3 and fig. 4, the first guiding assembly 123 includes a first rolling element 1231 and a connecting seat 1232, the first rolling element 1231 is connected to the sleeve 122 through the connecting seat 1232, and the first rolling element 1231 is in rolling engagement with the guiding portion 1211. Thus, the rolling fit is beneficial to reducing friction, reducing power loss, improving the transmission efficiency of the reciprocating mechanism 120, and further improving the use quality of the handheld cleaning machine 100.

Specifically, referring to fig. 1 and 3, the first rolling element 1231 is a ball. Connecting seat 1232 is a fixed steel ball support. Connecting base 1232 is threadably connected to the sleeve. Alternatively, the connecting seat 1232 is fixed in the sleeve 122 by a snap spring. Thus, the rolling smoothness of the first rolling piece 1231 is improved, the power loss is further reduced, the transmission efficiency of the transmission mechanism is improved, and the water pressure and the flow of the handheld cleaning machine 100 are improved under the same power.

Or, the first rolling element 1231 and the connecting seat 1232 are an integral universal ball bearing. So, be favorable to improving the structural stability of first direction subassembly 123, universal ball bearing forms rolling friction with reciprocating shaft 121 under the circumstances of guaranteeing the load, is favorable to reducing power loss, improves transmission efficiency, is favorable to improving the water pressure and the flow of hand-held type cleaning machine 100 under the same power.

Further, referring to fig. 1 and 2, the number of the first guiding assemblies 123 is at least two, at least two first guiding assemblies 123 are arranged at intervals along the circumferential direction of the reciprocating shaft 121, and at least two first guiding assemblies 123 are in rolling fit with the guiding portion 1211.

Specifically, referring to fig. 1 and 4, two first guide elements 123 are provided, and the two first guide elements 123 are symmetrically disposed along the axis of the reciprocating shaft 121. Both first guide members 123 are in rolling engagement with the guide 1211. But not limited thereto. Therefore, on one hand, the guiding effect of the first guiding assembly 123 is improved, and the transmission efficiency of the reciprocating mechanism 120 is improved. On the other hand, the first guide assemblies 123 arranged symmetrically are beneficial to improving the supporting effect of the guide assemblies on the circumferential direction of the reciprocating shaft 121, so that the reciprocating shaft 121 is prevented from swinging, the deviation force is mutually offset, the power loss is further reduced, the movement of the sleeve is more smooth, the abrasion is reduced, and the use quality of the handheld cleaning machine 100 is further improved.

Alternatively, guide 1211 may be a guide plate 1241, channel, conduit, or other guide structure.

Specifically, referring to fig. 1 and 4, the guide portion 1211 is a guide groove, the guide groove extends along the circumferential direction of the reciprocating shaft 121 and extends along the axial direction of the reciprocating shaft 121 in a reciprocating manner, and the first rolling element 1231 is in rolling fit with the guide groove. So, roll along the profile of guide way through first rolling member 1231 to drive sleeve 122 reciprocating motion, be favorable to improving reciprocating mechanism 120's structural stability, improve reciprocating mechanism 120's transmission efficiency simultaneously, reduce the loss, and then improve hand-held type cleaning machine 100's reliability in utilization. The present embodiment provides only one specific embodiment of the guide 1211, but is not limited thereto.

In one embodiment, referring to fig. 1, 2, 3 and 4, the reciprocating mechanism 120 further includes a second guiding component 124, the second guiding component 124 is connected to the wall of the mounting cavity 111, and the second guiding component 124 is in guiding engagement with the sleeve 122. So, second direction subassembly 124 is favorable to playing the guide effect to the reciprocating motion of sleeve 122, avoids the reciprocating motion of sleeve 122 to take place the orbit skew of big degree in installation cavity 111, is favorable to reducing the partial pressure, improves drive mechanism's transmission efficiency, and then improves water pump assembly 140's motion stability, further improves hand-held type cleaning machine 100's use quality.

Further, referring to fig. 1, 2, 3 and 4, the second guiding assembly 124 includes a guiding plate 1241 and a second rolling element 1242, the guiding plate 1241 is connected to the cavity wall of the mounting cavity 111, the guiding plate 1241 extends along the length direction of the reciprocating shaft 121, and the sleeve 122 is guided to cooperate with the guiding plate 1241 through the second rolling element 1242. Therefore, the friction between the sleeve 122 and the guide plate 1241 is reduced, the smoothness of the reciprocating motion of the sleeve 122 is improved, and the working stability and reliability of the water pump assembly 140 are further improved.

Specifically, referring to fig. 1, fig. 2, fig. 3 and fig. 4, the second rolling element 1242 is a steel ball. Thus, the rolling mode is beneficial to reducing friction and power loss, improving the transmission efficiency of the reciprocating mechanism 120 and the driving assembly 130, reducing power loss, and further improving the use reliability of the water pump assembly 140.

Further, the guide plate 1241 is provided with a ball slot, and the second rolling member 1242 is in rolling fit with the guide plate through the ball slot. Therefore, the smoothness and the guidance of the second rolling part 1242 on the guide plate 1241 are improved, the second rolling part 1242 can be prevented from falling off, the working reliability of the second guide assembly 124 is improved, and the working stability and the reliability of the water pump assembly 140 are further improved.

In one embodiment, referring to fig. 1, 2, 3 and 4, the number of the second guiding assemblies 124 is at least two, at least two second guiding assemblies 124 are spaced apart along the circumference of the sleeve 122, and at least two second guiding assemblies 124 are both in rolling fit with the sleeve 122.

Specifically, referring to fig. 1, fig. 2, fig. 3 and fig. 4, there are two second guiding assemblies 124, the two second guiding assemblies 124 are disposed on opposite sides of the circumference of the sleeve 122 along the opposite axial sides of the sleeve 122, and both the two second guiding assemblies 124 are in rolling fit with the sleeve 122. But not limited thereto. Therefore, the guiding effect and the supporting effect of the second guiding assembly 124 on the reciprocating motion of the sleeve 122 are further improved, the reciprocating motion of the sleeve 122 is prevented from generating large-degree track deviation, the transmission efficiency of the reciprocating mechanism 120 is improved, and the working stability and the reliability of the water pump assembly 140 are further improved.

In one embodiment, referring to fig. 1 and 2, the pump body 142 includes a plunger 1421, a first check valve 1422, a second check valve 1423, and a pump body 1424, the plunger 1421 is connected to the sleeve 122, the first check valve 1422 is connected between the plunger 1421 and the water inlet 141, the second check valve 1423 is connected between the plunger 1421 and the water outlet 143, and the plunger 1421 is used for discharging water from the water inlet 141 through the first check valve 1422 and the second check valve 1423 from the water outlet 143 when reciprocating. Thus, due to the one-way conduction function of the one-way valve, when the plunger 1421 moves, water can only be sucked into the pump body 1424 from the water inlet member 141 through the first one-way valve 1422, and then is discharged from the water outlet member 143 through the second one-way valve 1423, which is beneficial to avoiding water backflow and improving the working reliability of the water pump assembly 140.

In one embodiment, referring to fig. 1 and 2, the pump body 142 further includes a third check valve 1425 and a fourth check valve 1426, the third check valve 1425 is connected between the plunger 1421 and the water inlet 141, and the third check valve 1425 is opposite to the first check valve 1422. The fourth check valve 1426 is connected between the plunger 1421 and the water outlet 143, and the fourth check valve 1426 is opposite to the second check valve 1423. Thus, when the plunger 1421 reciprocates in the pump body 1424, the plunger can perform work both forward and backward: when plunger 1421 advances, form through first check valve 1422, second check valve 1423 and absorb water and go out water, when plunger 1421 retreats, form through third check valve 1425 and fourth check valve 1426 and absorb water and go out water, last water during plunger 1421 reciprocating motion, be favorable to improving the work efficiency of water pump assembly 140, and then improve the play water quality and the use experience of hand-held type cleaning machine 100.

In one embodiment, referring to fig. 1, 2, 3 and 4, the driving assembly 130 includes a reduction box 131 and a driving member 132, the driving member 132 is in driving connection with the reduction box 131, and the reduction box 131 is in driving connection with the reciprocating shaft 121. The driving member 132 drives the reduction box 131 to move, so as to drive the reciprocating shaft 121 to rotate, which is beneficial to adjusting the rotating speed of the reciprocating shaft 121, further adjusting the moving speed of the plunger 1421, adjusting the water pressure and flow of the water pump assembly 140, and improving the stability and use quality of the handheld cleaning machine 100.

Alternatively, the drive 132 may be an electric motor, a hydraulic motor, a pneumatic motor, or other drive means.

Specifically, referring to fig. 1, fig. 2, fig. 3 and fig. 4, the driving member 132 is a motor. Thus, the portability of the driving member 132 is improved, and the handheld cleaning machine 100 can be conveniently charged and carried by the battery driving, so that the convenience of the handheld cleaning machine 100 can be improved. The present embodiment provides only one specific implementation of the driving member 132, but not limited thereto.

In one embodiment, referring to fig. 1, fig. 2, fig. 3 and fig. 4, the driving assembly 130 further includes a transmission member 133, and the reduction box 131 is in transmission connection with the driving member 132 through the transmission member 133. So, driving piece 132 drive transmission piece 133 motion to drive the motion of reducing gear box 131, be favorable to improving the drive effect of driving piece 132 and the life of driving piece 132, different transmission mode is favorable to improving the compactedness of installation cavity 111 inner structure simultaneously, reduces volume and weight, and then improves the use quality of hand-held type cleaning machine 100.

Alternatively, the transmission means 133 may be a gear transmission, a belt transmission, a chain transmission, a link transmission or other transmission means.

Specifically, referring to fig. 1 and 2, the transmission member 133 is a gear. So, be favorable to guaranteeing reciprocating mechanism 120's transmission efficiency, improve reciprocating shaft 121's motion stability, improve the compactedness of installation cavity 111 inner structure simultaneously, and then reduce hand-held type cleaning machine 100's volume and quality, conveniently carry, improve hand-held type cleaning machine 100's use and experience. The present embodiment provides only one specific embodiment of the transmission member 133, but not limited thereto.

In one embodiment, the water inlet 141 is provided with a safety relief valve (not shown), which is communicated between the water inlet 141 and the plunger 1421. Therefore, the safety protection effect is favorably realized in the water pump assembly 140, when the pressure in the pump body 142 exceeds a specified value, the safety overflow valve is pushed open, the water flow part of the water discharged from the pump body 142 returns to the water inlet part 141, so that the pressure in the pump body 142 is maintained in a safety value range, the accident of the water pump assembly 140 due to overhigh pressure is avoided, and the use safety and the reliability of the handheld cleaning machine 100 are effectively improved.

In one embodiment, referring to fig. 1 and fig. 2, the water inlet member 141 is provided with a water inlet quick connector 1411, and the water inlet quick connector 1411 is used for being detachably connected with the water storage device. So, be favorable to improving the connection stability of water storage devices such as the piece 141 of intaking and water inlet fast takeover, water pitcher, convenient to detach is favorable to improving the convenience that water storage device changed simultaneously, and then is favorable to improving the convenience of use of hand-held type cleaning machine 100.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A hand-held cleaning machine, characterized in that it comprises:

the shell is provided with a mounting cavity;

the reciprocating mechanism is arranged in the mounting cavity and comprises a reciprocating shaft, a sleeve and a first guide assembly, the sleeve is sleeved on the reciprocating shaft, a guide part is arranged on the reciprocating shaft, and the sleeve is in guide fit with the guide part through the first guide assembly;

the driving assembly is arranged in the mounting cavity and is in driving connection with the reciprocating shaft, and the driving assembly is used for driving the reciprocating shaft to rotate so as to enable the sleeve to reciprocate along the axial direction of the reciprocating shaft;

the water pump assembly comprises a water inlet part, a pump body and a water outlet part, the pump body is connected with the sleeve, the pump body is communicated between the water inlet part and the water outlet part, and the pump body is used for feeding water from the water inlet part and discharging the water from the water outlet part when moving along the axis of the reciprocating shaft.

2. The hand-held cleaning machine of claim 1 wherein the first guide assembly includes a first roller and a coupling socket, the first roller being coupled to the sleeve via the coupling socket, the first roller being in rolling engagement with the guide portion.

3. The hand-held cleaning machine according to claim 2, wherein the guide portion is a guide groove provided extending in a circumferential direction of the reciprocating shaft and extending reciprocally in an axial direction of the reciprocating shaft, and the first rolling member is in rolling engagement with the guide groove.

4. The hand-held cleaning machine according to claim 2, wherein the reciprocator further comprises a second guide assembly coupled to a wall of the mounting chamber, the second guide assembly being in guiding engagement with the sleeve.

5. The hand-held cleaning machine of claim 4, wherein the second guiding assembly comprises a guiding plate and a second rolling member, the guiding plate is connected with the wall of the installation cavity, the guiding plate extends along the length direction of the reciprocating shaft, and the sleeve is in guiding fit with the guiding plate through the second rolling member.

6. The hand-held cleaning machine of claim 4 wherein the number of the first guide assemblies is at least two, at least two of the first guide assemblies are spaced circumferentially along the reciprocating shaft, and at least two of the first guide assemblies are in rolling engagement with the guide portion; and/or the presence of a gas in the gas,

the number of the second guide assemblies is at least two, the second guide assemblies are arranged along the circumferential direction of the sleeve at intervals, and the second guide assemblies are matched with the sleeve in a rolling mode.

7. The hand-held cleaning machine according to any one of claims 1-6, wherein the pump body comprises a plunger, a first check valve, a second check valve and a pump body, the plunger is connected with the sleeve, the first check valve is communicated between the plunger and the water inlet member, the second check valve is communicated between the plunger and the water outlet member, and the plunger is used for discharging water from the water inlet member through the first check valve and the second check valve from the water outlet member when reciprocating.

8. The hand-held cleaning machine according to claim 7, wherein the pump body further comprises a third one-way valve and a fourth one-way valve, the third one-way valve is communicated between the plunger and the water inlet member, and the third one-way valve is opposite to the first one-way valve; the fourth one-way valve is communicated between the plunger and the water outlet part, and the direction of the fourth one-way valve is opposite to that of the second one-way valve.

9. The hand-held cleaning machine of claim 8, wherein the drive assembly includes a reduction gearbox and a drive member, the drive member is in driving connection with the reduction gearbox, and the reduction gearbox is in driving connection with the reciprocating shaft.

10. The hand-held cleaning machine as defined in claim 9 wherein the drive assembly further includes a transmission member, the reduction gearbox being drivingly connected to the drive member through the transmission member.