CN110227676B

CN110227676B - Foldable handheld cleaning machine

Info

Publication number: CN110227676B
Application number: CN201910468872.3A
Authority: CN
Inventors: 刘楷; 林有余; 黄云
Original assignee: Jiangsu Sumec Hardware and Tools Co Ltd
Current assignee: Jiangsu Sumec Hardware and Tools Co Ltd
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2021-04-13
Anticipated expiration: 2039-05-31
Also published as: CN110227676A

Abstract

The invention discloses a folding handheld cleaning machine, comprising: a main chassis having a rear connection part; the handle shell is provided with a front connecting part which forms rotary connection with the rear connecting part by taking the axis as a rotary axis; and the locking piece I is in sliding connection with the front connecting part and the rear connecting part along the axial direction and can slide to a first position where the locking handle shell rotates relative to the main case and a second position where the releasing handle shell rotates relative to the main case when sliding. The invention can fold the machine body so as to change the holding posture, improve the comfort level of a user, and realize the linkage control of the water inlet valve and the motor pump unit under different postures of the machine body on the basis.

Description

Foldable handheld cleaning machine

Technical Field

The invention belongs to the technical field of handheld cleaning machines, and particularly relates to a folding type handheld cleaning machine.

Background

The cleaning machine is a device which uses water or mixed liquid added with a cleaning agent as a cleaning medium and utilizes high-pressure water flow to clean the surface of an object, the cleaning machine can be used for cleaning automobiles, courtyards, the ground, railings, doors and windows and the like, the cleaning machine is more efficient and convenient to use, the cleaning machine mainly comprises a spray gun and a host machine, the host machine comprises a motor, a pump, a battery or an external power supply line, the spray gun and the host machine are connected through a water inlet pipe, the spray gun is used for forming water flows with different shapes according to actual needs, the host machine is used for converting water into the high-pressure water flow from municipal tap water or a water bucket and conveying the high-pressure water flow to the spray gun, the host machine is usually fixedly placed or movably placed on the ground, the host machine is larger in size and heavier in weight.

As a handheld cleaning machine, the water pressure influence can be felt when a user holds the machine due to the fact that the water pressure is high during working, and under the operating state of high pressure, if the machine is held by the hand according to the existing horizontal mode, the holding comfort can be reduced, the operation and control are influenced, and even the phenomenon that the machine body is out of hand is easy to occur.

Therefore, it is necessary to design a hand-held washing machine capable of changing the holding posture according to the water pressure.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide a folding type handheld cleaning machine which can fold a machine body so as to change the holding posture and improve the comfort level of a user and can realize linkage control of a water inlet valve and a motor pump unit of the machine body in different postures.

In order to solve the problems of the prior art, the invention discloses a folding handheld cleaning machine, which comprises:

a motor pump unit having a pump and a motor driving the pump;

a main chassis housing the motor pump unit, the main chassis having a rear connection portion; and

and a handle case for holding the machine, the handle case having a front connection portion constituting a rotational connection with the rear connection portion using the axis as a rotational axis, the handle case being rotatable and fixed in at least 2 positions with respect to the main case.

Furthermore, the locking device also comprises a locking piece I, wherein the locking piece I and the front and rear connecting parts form sliding connection along the axial direction and can slide to a first position where the locking handle shell rotates relative to the main case and a second position where the releasing handle shell rotates relative to the main case when sliding.

Furthermore, the rear connecting part of the main machine shell is provided with at least one positioning groove I, and the front connecting part of the handle shell is provided with at least one positioning groove II; the locking piece I is provided with at least one locking part; when the locking piece I is positioned at the first position, the locking part is inserted into one of the positioning groove I and the positioning groove II; when the locking piece I is located at the second position, the locking part is separated from the positioning groove I and/or the positioning groove II.

Furthermore, the rear connecting part of the main machine shell is provided with an accommodating part I extending along the axis; the front connecting part is provided with an accommodating part II extending along the axis, the front connecting part is arranged in the accommodating part I to form rotary connection, and the locking piece I is at least partially arranged in the accommodating part II.

Furthermore, the locking part I also comprises a resetting part I which enables the locking part I to have the tendency of sliding from the second position to the first position, one end of the accommodating part I of the main case penetrates through the rear connecting part along the direction of the axis to form an operation hole for accommodating one end of the locking part, the other end of the accommodating part I of the main case is sealed to form a limiting wall for limiting the circumferential position of one end of the resetting part I, and the operation hole is communicated with the accommodating part II; the reset piece I is at least partially arranged in the accommodating part II, and the other end of the reset piece I is abutted to the locking piece I.

Furthermore, two ends of the accommodating part I of the main machine shell penetrate through the rear connecting part along the axis direction to form two operation holes for accommodating the end parts of the locking pieces I respectively.

Furthermore, the handle shell is also provided with an outer peripheral part which is arranged around the outer side of the rear connecting part to form sliding connection.

Furthermore, the handle comprises a battery pack, wherein the battery pack is detachably arranged at the rear end of the handle shell and is connected with the driving circuit.

Further, still include:

a motor pump unit having a pump and a motor driving the pump;

the water inlet valve is provided with a water inlet, a water outlet and a valve core arranged in a sliding manner;

a trigger; and

the switch is provided with a contact which is extruded by the trigger to control the on-off of the driving circuit;

the motor pump unit and the water inlet valve are arranged in the main machine shell, the switch is arranged in the handle shell, and the trigger is movably arranged on the handle shell;

the motor is connected with the switch through a driving circuit; the pump is provided with a high-pressure water outlet and a pump water inlet, and the water outlet is connected with the pump water inlet; the valve core is provided with a first position for communicating the water inlet and the water outlet and a second position for separating the water inlet and the water outlet, the valve core is driven by the trigger through the flexible traction piece which is always in a stretched state to move from the second position to the first position, the valve core is driven by the trigger to reach the first position, and then the contact is squeezed to enable the driving circuit to be conducted.

Furthermore, a guide piece I for changing the driving direction of the flexible traction piece and a rotating piece which is driven by the trigger to rotate in a certain range are arranged in the main machine shell, and the flexible traction piece bypasses the guide piece I and then is connected with the rotating piece.

Further, the rotating part is a roller with an eccentric bulge or an external tooth part I; the trigger has an abutting portion abutting against the eccentric projection or an external tooth portion II meshing with the external tooth portion I.

Furthermore, a guide piece I and a guide piece II for changing the driving direction of the flexible traction piece are arranged in the main machine shell, and the flexible traction piece sequentially bypasses the guide piece I and the guide piece II to be connected to the trigger.

Furthermore, the handle locking device further comprises a locking piece II which is movably connected with the handle shell and can move to a first position for locking the trigger to move relative to the handle shell and a second position for releasing the trigger to move relative to the handle shell when moving.

Further, the lock member II includes an operation portion and a stopper portion that locks or releases the trigger, which are connected.

Furthermore, the locking device also comprises a resetting piece II which enables the locking piece II to have the trend of moving from the second position to the first position.

The invention has the following beneficial effects:

1. in the invention, the main machine shell is rotationally connected with the handle shell, so that the rotation angle between the main machine shell and the handle shell can be changed, a user can conveniently present different holding postures when holding, and the use comfort is improved.

2. In the invention, when the main machine shell and the handle shell rotate to proper positions relatively, the locking piece I can be used for locking in time, so that the situation that the normal work of the cleaning machine is influenced due to the fact that the main machine shell and the handle shell rotate in the using process is avoided, and when the main machine shell and the handle shell need to be adjusted again, the locking piece I is controlled again to release the main machine shell and the handle shell.

3. In the invention, no matter how the main machine shell and the handle shell are fixed, the linkage control of the motor pump unit and the water inlet valve can be realized through the trigger, thereby improving the operation convenience of the cleaning machine.

Drawings

FIG. 1 is a perspective view of a preferred embodiment of the present invention in an unadjusted state;

FIG. 2 is an internal block diagram of the embodiment of FIG. 1 in an unconditioned state;

FIG. 3 is a sectional view of the connection between the main housing and the handle housing of the embodiment of FIG. 1 in an unadjusted state;

FIG. 4 is a coordinated control diagram of the embodiment of FIG. 1 in an unregulated state;

FIG. 5 is a perspective view of the embodiment of FIG. 1 in an adjusted state;

FIG. 6 is an internal block diagram of the embodiment of FIG. 1 in an adjusted state;

FIG. 7 is a sectional view of the connection between the main housing and the handle housing of the embodiment of FIG. 1 in an adjusted state;

FIG. 8 is a control diagram of the embodiment of FIG. 1 in a regulating state;

FIG. 9 is a cross-sectional view of the structure of the junction of the main housing and the handle housing in an alternative embodiment of the present invention;

FIG. 10 is a coordinated control diagram of another alternative embodiment of the present invention;

fig. 11 is a coordinated control diagram of another alternative embodiment of the present invention.

Reference numerals:

1, a main chassis; 101 a rear connection part; 102 positioning a groove I; 103, a housing part I; 104 a limiting wall; 105 an operation hole; 2 a handle shell; 201 front connection part; 202 positioning a groove II; 203 an accommodating part II; 204 outer peripheral portion; 3, a locking piece I; 301 a locking part; 4, locking piece II; 401 an operation section; 402 a stopper portion; 5, a trigger; 501 an abutting part; 502 outer tooth portion II; 6, switching; 601 a contact; 7 a water inlet valve; 701, a valve core; 702 an outlet (702); 8, a pump; 801 pump water inlet; 802 high-pressure water outlet; 9, a water inlet joint; 10, a motor; 11 a guide member I; 12 a foldable hand-held cleaning machine; 13 a rotating member; 1301 an eccentric bulge; 1302 an outer toothed portion I; 14 motor pump units; 15 a battery pack; 16 a flexible traction member; 17 a pivot shaft; 18 axes; 19 guide II; 20 a reset element I.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example one

As shown in fig. 1 to 8, a folding hand-held cleaning machine 12 includes: the main machine shell 1, the handle shell 2, the locking piece I3, the resetting piece I20, the battery pack 15, the motor pump unit 14, the water inlet valve 7, the trigger 5, the switch 6, the flexible traction piece 16, the guide piece I11, the rotating piece 13, the locking piece II4 and the resetting piece II. The main case 1 and the handle case 2 are both half-shell structures, and are connected by screws to form a cavity inside which components can be accommodated.

The main chassis 1 has a rear connection portion 101, and the handle chassis 2 has a front connection portion 201 which forms a rotational connection with the rear connection portion 101 with the axis 18 as a rotational axis. Through the rotary connection, the main machine shell 1 and the handle shell 2 can relatively rotate to a preset angle, so that better holding comfort is achieved.

In order to lock both the main chassis 1 and the handle chassis 2 in time after reaching a preferred angle and release both when adjustment is required, the participation of the locking member I3 is required. The lock member I3 is slidably connected to the front and rear connecting

portions

201, 101 in the axial direction and can be slid to a first position for locking the handle case 2 to rotate with respect to the main body case 1 and a second position for releasing the handle case 2 to rotate with respect to the main body case 1. The sliding direction of the lock member I3 is parallel to the axis 18, thereby facilitating the operation of the lock member I3 by a user.

The working principle of the locking piece I3 is as follows: the rear connecting part 101 of the main case 1 is circumferentially provided with one to four positioning grooves I102, and the front connecting part 201 of the handle case 2 is circumferentially provided with one to four positioning grooves II 202; the lock member I3 has one to four lock portions 301; when the locking piece I3 is in the first position, the locking part 301 is inserted into one of the positioning grooves I102 and one of the positioning grooves II202 to circumferentially limit the main case 1 and the handle case 2, and at this time, the main case 1 and the handle case 2 are locked; when the locking member I3 is in the second position, the locking portion 301 can only disengage from the positioning slot I102 or only disengage from the positioning slot II202, and can also disengage from the positioning slot I102 and the positioning slot II202 at the same time, and the main chassis 1 and the handle chassis 2 can rotate freely. The distribution of the positioning grooves I102 and II202 can affect the angle between the main casing 1 and the handle casing 2 to be adjusted by rotation at every time, and thus can be set according to actual needs. If the two are uniformly distributed, the angle of each adjustment is the same.

The locking piece I3 is arranged in the following specific mode: the rear connecting part 101 of the main case 1 is provided with a containing part I103 extending along the axis 18; the front connecting part 201 is provided with a receiving part II203 extending along the axis 18, the front connecting part 201 is arranged in the receiving part I103 to form a rotary connection, and the locking piece I3 is at least partially arranged in the receiving part II 203.

One end of the accommodating part I103 of the main case 1 penetrates through the rear connecting part 101 along the direction of the axis 18 to form an operating hole 105 for accommodating one end of the locking piece I3, the other end of the locking piece I is sealed to form a limiting wall 104 for limiting the circumferential position of one end of the resetting piece I20, and the operating hole 105 is communicated with the accommodating part II 303; the reset piece I20 is at least partially disposed in the receiving portion II203, and the other end thereof abuts against the lock piece I3. The resetting piece I20 is used for resetting the locking piece I3, namely, after the locking piece I3 slides from the first position to the second position, the locking piece I3526 has the tendency of sliding from the second position to the first position under the action of the resetting piece I20. The user presses the end of the latch member I3 located at the operation hole 105 to slide the latch member I3 from the first position to the second position, thereby releasing the main chassis 1 and the handle chassis 2. At this time, since a restoring force is applied to the lock member I3 by the reset member I20 when the lock member I3 is slid, the lock member I3 can be reset when the lock portion 301 thereof is aligned with the positioning grooves I102 and II202 after the user releases the lock member I3.

Since the rear connecting portion 101 is accommodated in the front connecting portion 201 to form a rotational connection, in order to facilitate the firmness of the rotational connection, the handle case 2 is further provided with an outer peripheral portion 204, and the outer peripheral portion 204 is arranged around the outer side of the rear connecting portion 101 to form a sliding connection. The corresponding parts forming the rotary connection between the main case 1 and the handle case 2 all adopt spherical connection pairs, so that the rotary connection around the axis 18 can be realized, the axial self-limiting can also be realized, and the main case 1 and the handle case 2 are prevented from sliding in the axial direction.

In order to improve the portability of the washing machine, the washing machine can be operated with a self-powered drive motor 10, the washing machine is powered by a battery pack 15, the battery pack 15 is connected to a drive circuit, and in addition, the battery pack 15 is detachably provided at the rear end of the handle case 2 in order to balance the weight of the whole machine and thus ensure a better comfort when being held.

In order to meet the linkage control requirement, the invention also improves the control mode of the motor pump unit 14 and the water inlet valve 7, and the specific implementation mode is as follows:

the motor pump unit 14 has a pump 8 and a motor 10 that drives the pump 8; the water inlet valve 7 is provided with a water inlet, a water outlet 702 and a valve core 701 arranged in a sliding way; the switch 6 has a contact 601 which is pressed by the trigger 5 to control the on/off of the drive circuit. The motor pump unit 14 and the water inlet valve 7 are arranged in the main casing 1, the switch 6 is arranged in the handle casing 2, the trigger 5 is movably arranged on the handle casing 2 through a pivot 17 at the tail part of the trigger, and a part of the trigger can enter the handle casing 2 when moving.

The motor 10 is connected with the switch 6 through a driving circuit, the pump 8 is provided with a high-pressure water outlet 802 and a pump water inlet 801, and the water outlet 702 is connected with the pump water inlet 801; the valve core 701 has a first position for communicating the water inlet and the water outlet 702 and a second position for blocking the water inlet and the water outlet 702, and the trigger 5 drives the valve core 701 to move from the second position to the first position through the flexible traction piece 16. In order to prevent idling during the initial stage of starting the pump 8, it is necessary to introduce a liquid medium before starting the pump, so that the trigger 5 and the valve element 701 reach the first position, water is introduced into the pump 8, and then the trigger 5 presses the contact 601 to conduct the driving circuit, so that the motor 10 drives the pump 8 to operate. The flexible traction piece 16 keeps a straight state under the condition that the main machine shell 1 and the handle shell 2 keep any angle, so that the action of the class 5 can be timely transmitted to the valve core 701 to open the water inlet valve 7.

The flexible pulling member 16 is limited in the arrangement position of the relevant parts during the extension from the main chassis 1 to the handle chassis 2, and thus the steering of the flexible pulling member 16 needs to be achieved by the guide member. Specifically, a guide piece I11 for changing the driving direction of the flexible traction piece 16 and a rotating piece 13 which is driven by the trigger 5 to rotate within a certain range are arranged in the main machine shell 1, the number of the guide pieces I11 is two, and the two guide pieces I11 and the rotating piece 13 are connected through two rotation directions to reach a preferred connection position. The flexible traction element 16 is connected to the rotating element 13 after passing around the guide element I11. The guide member I11 is rotatably disposed, thereby reducing friction between the flexible traction member 16 and the flexible linkage member 16 when the flexible traction member is steered around its outer peripheral surface, and prolonging the service life of the flexible linkage member 16.

As a preferred embodiment, the flexible traction member 16 is pulled in a specific manner: the rotary member 13 is a roller having an eccentric projection 1301, and accordingly, the trigger 5 has an abutting portion 501 abutting against the eccentric projection 1301. When the user pulls the trigger 5, the abutting portion 501 of the trigger 5 pushes the eccentric protrusion 1301 of the rotating member 13 to rotate the rotating member 13, so that the outer peripheral surface of the rotating member 13 is wound around the flexible traction member 16, and the valve plug 701 is finally driven to move from the first position to the second position.

In order to improve the safety of the operation of the complete machine, it is necessary to open the complete machine safety device before the motor pump unit 14 is started, and the process is completed by means of the locking piece II4, specifically, the locking piece II4 is movably connected with the handle shell 2 and can move to a first position for locking the trigger 5 to move relative to the handle shell 2 and a second position for releasing the trigger 5 to move relative to the handle shell 2. The lock member II4 includes an operation portion 402 connected and a stopper portion 401 that locks or releases the trigger 5. The locking piece II4 is driven by the resetting piece II to realize resetting. In the invention, the locking piece II4 can be arranged in a rotating way or a sliding way, and when the locking piece II4 is arranged in a rotating way, the locking piece I14 can be reset without the resetting piece II, but by the reverse operation of a user.

In the invention, the resetting piece I and the resetting piece II are elastic parts, such as springs.

Example two

As shown in fig. 9, the present embodiment is different from the first embodiment in that two operation holes 105 for respectively receiving the ends of the lock pieces I3 are formed at both ends of the receiving portion I103 of the main chassis 1 penetrating to the rear connecting portion 101 along the direction of the axis 18. Both ends of the locking member I3 can be pressed by the user to slide the locking member I3 between its first position and its second position, without the need for the reset member I20 to switch between the two positions. In this embodiment, the locking member I3 can also be used as a pivot for the rotation connection between the main housing 1 and the handle housing 2.

EXAMPLE III

As shown in fig. 10, the present embodiment is different from the first embodiment in that: the rotary member 13 is a roller having an external tooth portion I1302, and accordingly, the trigger 5 has an external tooth portion II502 engaged with the external tooth portion I1302. When the trigger 5 rotates around the pivot 17, the rotating frame 13 rotates along with the trigger 5 under the action of the engagement of the external tooth part II502 and the external tooth part I1302, so that the flexible traction piece 16 can realize the traction on the valve core 701.

Example four

As shown in fig. 11, the present embodiment is different from the first embodiment in that: the main chassis 1 is provided with a guide I11 and a guide II19 for changing the driving direction of the flexible traction element 16, the number of the guide I11 is the same as that of the guide II19 in the first embodiment, and the guide II19 only serves to turn the flexible traction element 16. The flexible pulling member 16 is connected to the trigger 5 in turn by passing around guide I11 and guide II 19. When the trigger 5 is rotated about the pivot 17 by the force F, the trigger 5 pulls the flexible pull 16 to move the spool 701.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A folding hand-held cleaning machine (12), characterized by: the method comprises the following steps:

a motor pump unit (14), the motor pump unit (14) having a pump (8) and a motor (20) driving the pump (8);

a main chassis (1), said main chassis (1) accommodating said motor pump unit (14), said main chassis (1) having a rear connection portion (101); and

a handle shell (2) for holding a machine, the handle shell (2) having a front connecting part (201) which forms a rotational connection with the rear connecting part (101) with an axis (18) as a rotational axis;

the handle is characterized by further comprising a battery pack (15), wherein the battery pack (15) is detachably arranged at the rear end of the handle shell (2);

the handle housing (2) is rotatable and fixable in at least 2 positions relative to the main housing (1),

among said positions, there are positions arranged at an obtuse angle between said main case (1) and said handle case (2), and positions arranged in a straight line between said main case (1) and said handle case (2);

the locking piece I (3) and the front and rear connecting parts (201 and 101) form sliding connection along the axial direction and can slide to a first position for locking the handle shell (2) to rotate relative to the main machine shell (1) and a second position for releasing the handle shell (2) to rotate relative to the main machine shell (1) when sliding;

a receiving part I (103) extending along the axis (18) is arranged on the rear connecting part (101) of the main case (1); the front connecting part (201) is provided with a containing part II (203) extending along the axis (18), the front connecting part (201) is arranged in the containing part I (103) to form the rotary connection, and the locking piece I (3) is at least partially arranged in the containing part II (203);

the locking device further comprises a resetting piece I (20) which enables the locking piece I (3) to have a tendency of sliding from the second position to the first position, one end of a containing part I (103) of the main case (1) penetrates through the rear connecting part (101) along the direction of the axis (18) to form an operation hole (105) for containing one end of the locking part (3), the other end of the containing part I is sealed to form a limiting wall (104) for limiting the circumferential position of one end of the resetting piece I (20), and the operation hole (105) is communicated with the containing part II (303); the reset piece I (20) is at least partially arranged in the accommodating part II (203), and the other end of the reset piece I (20) is abutted against the locking piece I (3);

the rear connecting part (101) of the main machine shell (1) is provided with at least one positioning groove I (102), and the front connecting part (201) of the handle shell (2) is provided with at least one positioning groove II (202); the locking piece I (3) is provided with at least one locking part (301); when the locking piece I (3) is in the first position, the locking part (301) is inserted into one of the positioning groove I (102) and the positioning groove II (202); when the locking piece I (3) is in the second position, the locking part (301) is separated from the positioning groove I (102) and/or the positioning groove II (202).

2. A folding hand-held cleaning machine (12), characterized by: the method comprises the following steps:

two ends of the accommodating part I (103) of the main case (1) penetrate through the rear connecting part (101) along the direction of the axis (18) to form two operation holes (105) for accommodating the end parts of the locking pieces I (3) respectively;

3. A folding hand-held cleaning machine (12), characterized by: the method comprises the following steps:

the handle shell (2) is further provided with an outer peripheral part (204), and the outer peripheral part (204) is arranged around the outer side of the rear connecting part (101) to form sliding connection;

4. A folding hand-held cleaning machine (12) according to any one of claims 1-3, characterised in that: further comprising:

the water inlet valve (7), the water inlet valve (7) is provided with a water inlet, a water outlet (702) and a valve core (701) which is arranged in a sliding mode;

a trigger (5); and

the switch (6), the said switch (6) has a contact (601) that is squeezed by the said trigger (5) and controls the said drive circuit to make and break;

the motor pump unit (14) and the water inlet valve (7) are arranged in the main machine shell (1), the switch (6) is arranged in the handle shell (2), and the trigger (5) is movably arranged on the handle shell (2);

the motor (20) is connected with the switch (6) through a driving circuit; the pump (8) is provided with a high-pressure water outlet (802) and a pump water inlet (801), and the water outlet (702) is connected with the pump water inlet (801); the valve core (701) is provided with a first position enabling the water inlet and the water outlet (702) to be communicated and a second position enabling the water inlet and the water outlet (702) to be blocked, the trigger (5) drives the valve core (701) to move from the second position to the first position through the flexible traction piece (16) which is always in a stretched state, the trigger (5) drives the valve core (701) to reach the first position firstly, and then the contact (601) is squeezed to enable the driving circuit to be conducted.

5. A folding hand-held cleaning machine (12) according to claim 4, characterized in that: be equipped with the change in the host computer shell (1) the guide I (11) of flexible piece (16) driving direction and receive rotation piece (13) of rotation within a certain range are drawn in the drive of trigger (5), flexible piece (16) of drawing walk around connect in behind guide I (11) rotation piece (13).

6. A folding hand-held cleaning machine (12) according to claim 5, characterised in that: the rotating part (13) is a roller with an eccentric bulge (1301) or an external tooth part I (1302); the trigger (5) has an abutment portion (501) abutting against the eccentric projection (1301) or an external tooth portion II (502) meshing with the external tooth portion I (1302).

7. A folding hand-held cleaning machine (12) according to claim 4, characterized in that: be equipped with the change in host computer shell (1) guide I (11) and guide II (19) that flexible pull piece (16) direction of drive, flexible pull piece (16) are walked around in proper order guide I (11) and guide II (19) connect in on trigger (5).

8. A folding hand-held cleaning machine (12) according to claim 4, characterized in that: the handle locking device is characterized by further comprising a locking piece II (4), wherein the locking piece II (4) and the handle shell (2) are movably connected and can move to a first position for locking the trigger (5) to move relative to the handle shell (2) and a second position for releasing the trigger (5) to move relative to the handle shell (2) when moving.

9. The folding hand-held cleaning machine (12) according to claim 8, characterized in that: the locking piece II (4) comprises an operation part (402) and a stopping part (401) which are connected, wherein the stopping part locks or releases the trigger (5).

10. The folding hand-held cleaning machine (12) according to claim 8, characterized in that: the locking device also comprises a resetting piece II which enables the locking piece II (4) to have the trend of moving from the second position to the first position.