JP6956172B2 - Vacuum cleaner - Google Patents

Description

This specification relates to a vacuum cleaner.

The vacuum cleaner can be classified into a manual vacuum cleaner in which the user directly moves the vacuum cleaner for cleaning and an automatic vacuum cleaner for cleaning while traveling by himself / herself.

Further, the manual vacuum cleaner can be classified into a canister type vacuum cleaner, an upright type vacuum cleaner, a handy type vacuum cleaner, a stick type vacuum cleaner and the like according to the form of the vacuum cleaner.

A handheld vacuum cleaner is disclosed in the prior document, Japanese Patent Publication No. 10-11270888 (registration date 2012.03.08.).

The handheld vacuum cleaner includes a suction tube, an airflow generator, a centrifuge, a power supply and a handle.

A PCB connected to the suction motor and the battery may be located on the handle.

However, according to the prior art, since the airflow generator is located on the upper side of the handle and the power supply is located on the lower side, there is a problem that the internal space of the handle is narrow, and the PCB can be provided accordingly. There is a problem that the structure is complicated and the work for installing the PCB is difficult.

An object of the present invention is to provide a vacuum cleaner in which a main PCB can be easily provided in a handle.

Another object of the present invention is to provide a vacuum cleaner that can be fixed to the handle in the process of pulling the main PCB into the handle without using a separate fastening member for fixing the main PCB to the handle.

Another object of the present invention is to provide a vacuum cleaner in which the size of the main PCB can be reduced and the size of the handle can be reduced.

The one-sided vacuum cleaner is a suction motor for generating a suction motor; a suction unit that guides the air and dust sucked by the suction motor generated by the suction motor; and separates dust from the air guided by the suction unit. Dust separation unit; a main PCB including a first PCB and a second PCB that can generate a control command for the suction motor and are separated from each other; a handle unit that can accommodate the main PCB; and the first PCB and the second PCB. Includes a PCB connector that is coupled to the handle in a connected state.

A vacuum cleaner with other sides is a suction motor for generating a suction motor; a suction unit that guides air and dust sucked by the suction motor generated by the suction motor; dust is removed from the air sucked by the suction unit. A main body including a dust separating portion to be separated; a main PCB assembly capable of generating a control command of the suction motor and including a plurality of PCBs; and a handle portion to which the main PCB assembly is coupled, said the handle portion. Includes a first extension through which the longitudinal axis of the suction section penetrates and a second extension extending from the upper side of the first extension towards the body, wherein the main PCB assembly is the same. It is coupled to the handle portion in the process of being housed in the second extension portion.

According to the proposed invention, since the main PCB is housed in the handle body in a state of being divided into two PCBs, there is an advantage that the size of the main PCB can be reduced.

In particular, since the two PCBs are housed in the handle body in a parallel state and an upright state, there is an advantage that the size of the main PCB unit is minimized.

Further, in the process of inserting the main PCB assembly into the accommodation space of the handle body with the two PCBs connected to the PCB connector, the main PCB assembly can be coupled to the handle body. Therefore, there is an advantage that the structure for fixing the two PCBs to each other and the structure for fixing the two PCBs to the handle body are simplified, and the assembly process of the user is easy.

The perspective view of the vacuum cleaner which concerns on one Example of this invention. A side view of a vacuum cleaner according to an embodiment of the present invention. The plan view of the vacuum cleaner which concerns on one Example of this invention. A perspective view of a vacuum cleaner according to an embodiment of the present invention as viewed from below. The vertical sectional view of the vacuum cleaner which concerns on one Example of this invention. The drawing which shows the state which the handle part was separated from the main body which concerns on one Example of this invention. The perspective view of the handle part which concerns on one Example of this invention. The perspective view of the main PCB unit which concerns on one Example of this invention. The front view of the main PCB unit of FIG. An exploded perspective view of the main PCB unit of FIG. An exploded perspective view of the main PCB unit of FIG. The perspective view of the PCB connector of this invention. The perspective view of the connector which concerns on one Example of this invention. Top view of the connector of FIG. The perspective view which shows the state which the main PCB unit and the connector are connected. The cross-sectional view which shows the state which the 2nd PCB and the connector are connected. The perspective view of the handle body which concerns on one Example of this invention. Sectional drawing which shows the internal structure of a handle. A cross-sectional view of a state in which the main PCB unit is connected to the handle body. The drawing which shows the state that the power PCB was settled on the support rib with the main PCB unit connected to the handle body. The drawing which shows how the handle cover and the operation part are connected in the state of FIG. The drawing which shows the mode that the handle part is connected to the main body in the state which the assembly of the handle part which concerns on one Embodiment of this invention is completed.

Hereinafter, some examples of the present invention will be described in detail with reference to exemplary drawings. It should be noted that in assigning reference numerals to the components of each drawing, the same components are to have the same reference numerals as much as possible, even if they are shown on other drawings. Further, in explaining the examples of the present invention, if it is determined that the specific description of the related known configuration or function interferes with the understanding of the examples of the present invention, the detailed description thereof will be omitted.

In addition, terms such as first, second, A, B, (a), and (b) can be used in describing the components of the present invention. Such terms are merely for distinguishing a component from other components, and the term does not limit the essence, order, or procedure of the component. When a component is described as being "connected," "joined," or "connected" to another component, that component is directly connected to or may be connected to the other component. It should be understood that between each component and other components can be "connected", "joined" or "connected".

FIG. 1 is a perspective view of a vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a side view of the vacuum cleaner according to an embodiment of the present invention, and FIG. 3 is an embodiment of the present invention. FIG. 4 is a plan view of the vacuum cleaner according to the present invention, FIG. 4 is a perspective view of the vacuum cleaner according to the embodiment of the present invention as viewed from below, and FIG. 5 is a perspective view of the vacuum cleaner according to the embodiment of the present invention. It is a cross-sectional view.

With reference to FIGS. 1 to 5, the vacuum cleaner 1 according to the embodiment of the present invention can include the main body 2.

The vacuum cleaner 1 can further include a suction portion 5 coupled to the front surface of the main body 2. The suction unit 5 can guide air containing dust to the main body 2.

The vacuum cleaner 1 can further include a handle portion 3 coupled to the main body 2. The handle portion 3 may be located on the main body 2 on the opposite side of the suction portion 5.

That is, the main body 2 may be arranged between the suction portion 5 and the handle portion 3.

The main body 2 can include a first body 10 and a second body 12 located above the first body 10. The first body 10 and the second body 12 may be directly connected or indirectly connected by an intermediate intermediary member.

The first body 10 and the second body 12 can be formed in a cylindrical shape, although not limiting.

Then, the upper side and the lower side of each of the first body 10 and the second body 12 are opened. That is, each of the bodies 10 and 12 can include an upper opening and a lower opening.

Then, the suction portion 5 can be coupled to the main body 2 so that the central portion of the suction portion 5 is substantially located at the boundary portion between the first body 10 and the second body 12.

The main body 2 can further include a dust separating portion that separates dust from the air sucked through the suction portion 5.

As an example, the dust separation unit can include a first cyclone unit 110 capable of separating dust by cyclone flow. At this time, the first body 10 includes the first cyclone portion 110.

The air and dust sucked through the suction section 5 spirally flow along the inner peripheral surface of the first cyclone section 110.

The axis of the cyclone flow of the first cyclone portion 110 can extend in the vertical direction.

The dust separation section may further include a second cyclone section 130 that re-separates dust from the air discharged from the first cyclone section 110. At this time, the second cyclone portion 130 may be located inside the first cyclone portion 110 so that the size of the dust separation portion is minimized. The second cyclone unit 130 can include a plurality of cyclone bodies arranged in parallel.

As another example, the dust separating portion may have a single cyclone portion, and also in this case, the axis of the cyclone flow can extend in the vertical direction.

The first body 10 serves as a dust box for storing dust separated from the cyclone portions 110 and 130. The main body 2 can further include a body cover 16 that opens and closes the lower side of the first body 10. The body cover 16 can open and close the first body 10 by a rotational operation. The first body 10 may be provided with a button 18 operated for rotation of the body cover 16. The hinge 162 of the body cover 16 may be coupled to a hinge coupling portion 620 provided in the battery housing 60.

At least a part of the second cyclone portion 130 may be located in the first body 10.

A dust storage guide 124 that guides the storage of dust separated by the second cyclone portion 130 may be arranged in the first body 10. The dust storage guide 124 may be coupled to the underside of the second cyclone portion 130 and come into contact with the upper surface of the body cover 16.

The dust storage guide 124 has a first dust storage unit 121 in which dust separated by the first cyclone unit 110 is stored in the internal space of the first body 10, and dust separated by the second cyclone unit 130. Can be partitioned into a second dust storage unit 123 in which the cyclone is stored.

The internal space of the dust storage guide 124 is the second dust storage unit 123, and the space between the dust storage guide 124 and the first body 10 is the first dust storage unit 121.

The body cover 16 can open and close both the first dust storage unit 121 and the second dust storage unit 123.

The vacuum cleaner 1 can further include a suction motor 20 for generating suction input and a battery 40 for supplying power to the suction motor 20.

The suction motor 20 may be located within the second body 12. Then, at least a part of the suction motor 20 may be located above the dust separation portion. Therefore, the suction motor 20 is located above the first body 10.

The suction motor 20 can communicate with the discharge port of the second cyclone unit 130.

For this purpose, the main body 2 can further include a discharge guide 28 connected to the second cyclone portion 130 and a flow guide 22 communicating with the discharge guide 28.

As an example, the discharge guide 28 is located above the second cyclone portion 130, and the flow guide 22 is located above the discharge guide 28.

Then, at least a part of the suction motor 20 is located inside the flow guide 22.

Therefore, the axis of the cyclone flow of the dust separation portion can penetrate the suction motor 20.

When the suction motor 20 is located above the second cyclone section 130, the air discharged from the second cyclone section 130 can immediately flow to the suction motor 20 side, and the dust separation section and the suction motor 20 The flow path between them can be minimized.

The suction motor 20 can include an impeller 200 that operates in rotation. The impeller 200 may be connected to the shaft 202. The shaft 202 is arranged so as to extend in the vertical direction.

The extension line of the shaft 202 (which can also be said to be the rotation axis of the impeller 200) can pass through the first body 10. At this time, the rotation axis of the impeller 200 and the axis of the cyclone flow generated in the first cyclone portion 110 of the dust separation portion may be located on the same line.

According to the present invention, the path through which the air discharged from the dust separation portion, that is, the air discharged upward from the second cyclone portion 130 flows to the suction motor 20 side is reduced, and the change in the direction of the air is reduced. It has the advantage of reducing air flow loss.

When the air flow loss is reduced, the suction input can be increased, and the usage time of the battery 40 for supplying power to the suction motor 20 can be increased.

The vacuum cleaner 1 can further include an upper motor housing 26 that covers a part of the upper side of the suction motor 20 and a lower motor housing 27 that covers a part of the lower side of the suction motor 20.

The suction motor 20 is housed inside each of the motor housings 26 and 27, and the flow guide 22 may be arranged so as to surround the upper motor housing 26.

At least a portion of the flow guide 22 may be separated from the upper motor housing 26. Further, at least a part of the flow guide 22 can be separated from the second body 12.

Therefore, the inner peripheral surface of the flow guide 22 and the outer peripheral surface of the upper motor housing 26 form the first air flow path 232, and the outer peripheral surface of the flow guide 22 and the inner peripheral surface of the second body 12 are formed. A second air flow path 234 is formed.

The air discharged from the second cyclone portion 190 flows to the suction motor 20 along the first air flow path 232, and the air discharged from the suction motor 20 flows into the second air flow path 234. After flowing along, it is discharged to the outside. Therefore, the second air flow path 234 serves as an exhaust flow path.

The handle portion 3 can include a handle 30 for gripping the user and a battery housing 60 arranged under the handle 30.

The handle 30 may be located behind the suction motor 20.

When defined with respect to the direction, the direction in which the suction unit 5 is located is the front and the direction in which the handle 30 is located is the rear with respect to the suction motor 20 in the vacuum cleaner 1.

The battery 40 may be located behind the first body 10. Therefore, the suction motor 20 and the battery 40 may be arranged so as not to overlap each other in the vertical direction, and the arrangement heights may also be different.

According to the present invention, the heavy suction motor 20 is located in front of the handle 30 and the heavy battery 40 is located below the handle 30 with reference to the handle 30. The vacuum cleaner 1 is distributed equally in weight as a whole. When the user grips and cleans the handle 30, it is possible to prevent the user's wrist from being burdened. That is, although the heavy weight configurations are distributed and arranged on the front surface and the rear surface of the vacuum cleaner 1, since they are arranged at different heights, it is possible to prevent the center of gravity of the vacuum cleaner 1 from being biased to one side. ..

Since the battery 40 is located below the handle 30 and the suction motor 20 is located in front of the handle 30, there is no configuration above the handle 30. That is, the upper surface of the handle 30 forms the appearance of a part of the upper surface of the vacuum cleaner 1.

Therefore, it is possible to prevent one configuration of the vacuum cleaner 1 from coming into contact with the user's arm in the process of gripping and using the handle 30.

The handle 30 can include a first extension portion 310 that extends in the vertical direction and can be gripped by the user, and a second extension portion 320 that extends from the upper side of the first extension portion 310 toward the suction motor 20. .. At least a part of the second extension portion 320 can extend in the horizontal direction.

In the present invention, the first extension portion 310 is a portion that can be gripped by the user (a portion that the palm of the user can touch), and can also be referred to as a grip portion.

The first extension portion 310 prevents the user from moving in the longitudinal direction (vertical direction in FIG. 2) of the first extension portion 310 while the user is holding the first extension portion 310. A movement limiting unit 312 for this purpose may be provided. The movement limiting unit 312 can extend from the first extension unit 310 toward the suction unit 5.

The movement limiting portion 312 is arranged apart from the second extension portion 320. Therefore, while holding the first extension portion 310, some fingers are located above the movement limiting portion 312, and the remaining fingers are located below the movement limiting portion 312.

As an example, the movement limiting unit 312 may be located between the index finger and the middle finger.

According to such an arrangement, the longitudinal axis A1 of the suction portion 5 can pass through the wrist of the user while the user holds the first extension portion 310.

When the longitudinal axis A1 of the suction portion 5 passes through the wrist of the user, the longitudinal axis A1 of the suction portion 5 is in the extension direction of the user's arm while the user's arm is extended. Can be substantially parallel. Therefore, in such a state, there is an advantage that the user's force required when the user grips the handle 30 and pushes or pulls the vacuum cleaner 1 is minimized.

The handle 30 can include an operation unit 390. As an example, the operating portion 390 may be located on an inclined surface formed on the second extension portion 320. An on command and an off command of the vacuum cleaner (suction motor) can be input via the operation unit 390. As an example, the operation unit 390 can be used to input an on command and an off command of the suction motor 20. Further, the strength of the suction input of the suction motor 20 can be adjusted with the suction motor 20 turned on via the operation unit 390.

The operation unit 390 may be arranged so as to face the user. With reference to the handle 30, the operation unit 390 may be located on the opposite side of the movement restriction unit 312.

The operation unit 390 is located higher than the movement restriction unit 312. Therefore, the user can easily operate the operation unit 390 with his / her thumb while holding the first extension unit 310.

Further, since the operation unit 390 is located at a position deviated from the first extension unit 310, the operation unit 326 is unintentionally operated when cleaning is performed while holding the first extension unit 310. Can be prevented.

The battery housing 60 may be located below the first extension 310.

The battery 40 may be separably coupled to the battery housing 60. As an example, the battery 40 can be inserted into the battery housing 60 from below the battery housing 60.

The rear surface of the battery housing 60 and the rear surface of the first extension portion 310 can form continuous surfaces. Therefore, the battery housing 60 and the first extension portion 310 may have a sense of unity.

With the battery 40 housed in the battery housing 60, the lower surface of the battery 40 may be exposed to the outside. Therefore, when the vacuum cleaner 1 is placed on the floor, the battery 40 can be placed on the floor.

According to such a structure, there is an advantage that the battery 40 can be immediately separated from the battery housing 60.

Further, since the lower surface of the battery 40 is exposed to the outside, the lower surface of the battery 40 can come into direct contact with the air outside the vacuum cleaner 1, and the cooling performance of the battery 40 can be improved.

The battery housing 60 may further include a charging stand connecting terminal 628 for charging the battery 40 with the battery 40 mounted on the battery housing 60. When the vacuum cleaner 1 is settled on a charging stand (not shown), the terminals of the charging stand may come into contact with the charging stand connecting terminal 628.

The battery housing 60 may be provided with a battery connecting terminal 670 for coupling with a battery terminal 490 provided in the battery 40 housed in the battery housing 60. The battery connection terminal 670 may penetrate the upper side of the battery 40 and be coupled to the battery terminal 490.

On the other hand, referring to FIG. 3, the vacuum cleaner 1 can further include a filter mechanism 50 having an air discharge port 522 for discharging air that has passed through the suction motor 20. The air outlet 522 includes a plurality of openings as an example, and the plurality of openings may be arranged in the circumferential direction. Therefore, the air outlets 522 can be arranged in a ring shape.

The filter mechanism 50 can be separably coupled to the upper side of the main body 2. The filter mechanism 50 may be separably housed in the second body 12.

A part of the filter mechanism 2 is located outside the second body 12 in a state where the filter mechanism 50 is coupled to the main body 2. Therefore, a part of the filter mechanism 50 is drawn into the main body 2 through the upper opening of the main body 2, and the other part projects to the outside of the main body 2.

The height of the main body 2 can be substantially the same as the height of the handle 30. Therefore, the filter mechanism 50 can be easily separated from the filter mechanism 50 in a state where the filter mechanism 50 projects upward from the main body 2 and the user holds the filter mechanism 50.

The air discharge port 522 is located above the filter mechanism 50 in a state where the filter mechanism 50 is coupled to the main body 2. Therefore, the air discharged from the suction motor 20 is discharged above the main body 2.

According to this embodiment, it is possible to prevent the air discharged from the air discharge port 522 from flowing to the user side in the process of cleaning using the vacuum cleaner 1.

The main body 2 can further include a pre-filter 29 for filtering the air flowing into the suction motor 20. The pre-filter 29 may be located within the flow guide 22. Further, the pre-filter 29 can be attached to the upper motor housing 26 and surround a part of the upper motor housing 26. That is, the upper motor housing 26 can include a filter support portion for supporting the pre-filter 29.

FIG. 6 is a diagram showing a state in which the handle portion is separated from the main body according to the embodiment of the present invention, and FIG. 7 is a perspective view of the handle portion according to the embodiment of the present invention.

The handle portion 3 can include a handle body 332 and a handle cover 334 that covers the handle body 332.

The handle body 332 forms a part of the first extension portion 310 and a part of the second extension portion 320. The handle cover 334 forms the remaining part of the first extension portion 310 and the remaining part of the second extension portion 320.

That is, when the handle cover 334 is coupled to the handle body 332, the handle body 332 and the handle cover 334 form the first extension portion 310 and the second extension portion 320.

The handle body 332 can form not only the handle 30 but also the battery housing 60.

The handle portion 3 may further include a main body connecting portion 70 for connecting the handle portion 3 to the main body 2. The main body coupling portion 70 can connect the handle 30 and the battery housing 60.

The handle portion 3 can further include a main PCB (main PCB) unit 340 for controlling the suction motor 20.

The main PCB unit 340 can be drawn into the internal space of the second extension 320 as an example.

The main body 2 can further include a connector support portion 136 that supports the connector 400.

The connector 400 may be connected to the suction motor 20 provided in the main body 2. Further, the connector 400 may be connected to the main PCB unit 340. The connector 400 transmits a control signal transmitted from the main PCB unit 340 to the suction motor 20. The connector 400 may include a signal terminal for transmitting a control signal.

The main body 2 may further include a separation prevention rib 136a for preventing the connector 400 from being separated upward while the connector 400 is supported by the connector support portion 136.

The separation prevention rib 136a is formed so as to be separated from the connector support portion 136. The connector 400 may be drawn into the space between the connector support 136 and the separation prevention rib 136a. As an example, the connector 400 may be slid resting on the connector support 136 in the horizontal direction.

The connector support portion 136 and the separation prevention rib 136a may be provided on the second body 12 as an example.

The main body 2 includes a main body terminal 80, and the handle portion 3 can further include a handle terminal 90. The handle terminal 90 may be connected to the main PCB unit 340.

The main body terminal 80 may be provided on the cover member 70 coupled to the main body 2. The main body terminal 80 can be connected to the handle terminal 90 when the handle portion 3 is connected to the main body 2.

A plurality of main body electric wires 141 and 142 may be connected to the main body terminal 80. The plurality of main body electric wires 141 and 142 may be connected to the main body terminal 80 below the main body terminal 80.

The plurality of main body electric wires 141 and 142 are a pair of first electric wires 141 connected to the suction motor 20 for supplying power to the suction motor 20 and a pair of second electric wires connected to the suction unit 5. 142 and can be included.

The plurality of main body electric wires 141 and 142 can be drawn into the main body 2 after penetrating the packing 138 provided in the main body 2.

According to this embodiment, the signal terminal for transmitting the control signal and the control terminal for supplying power are separated and arranged at different positions on the main body, thereby preventing the size of the main body terminal 80 from becoming large. obtain.

The handle portion 3 may include a body coupling portion 304 for being coupled to the main body 2, and the main body 2 may include a handle coupling portion 139a for being coupled to the body coupling portion 304. can. The handle portion 3 can be sliding-coupled in the vertical direction on the main body 2 by the body coupling portion 304 and the handle coupling portion 139a.

Then, in the process of connecting the handle portion 3 to the main body 2, the main PCB unit 340 and the connector 400 can be connected, and the handle terminal 90 can be connected to the main body terminal 80.

On the other hand, the handle portion 3 can further include a plurality of handle electric wires 942, 944, 946. The plurality of handle wires 942, 944, 946 may be connected to the main PCB unit 340.

The main PCB unit 340 may be connected to the battery 40. Further, the main PCB unit 340 can receive an operation signal input from the operation unit 390. The main PCB unit 340 supplies power to the suction motor 20 and / or a suction unit terminal (not shown) located at the suction unit based on an input operation signal, or receives power from the suction motor 20. The strength can be adjusted.

The plurality of handle electric wires 942, 944, 946 are connected to the handle terminal 90 to supply power to the suction unit terminal, and are connected to the handle terminal 90 to form the suction motor 20. A second handle wire 944 for supplying power to the wire 944 and the like can be included.

When the handle terminal 90 is connected to the main body terminal 80, the first handle electric wire 942 is connected to the first main body electric wire 141 provided in the main body 2, and the second handle electric wire 944 is connected to the main body 2. It can be connected to the second main body electric wire 142 provided.

The plurality of handle electric wires 942, 944, 946 can further include a terminal connecting electric wire 946 connected to the charging stand connecting terminal 628.

The handle portion 3 may further include an electric wire guide 309 that guides the position of the handle electric wire so that the plurality of handle electric wires 942, 944, and 946 are located so as not to be entangled with each other.

Hereinafter, the structure and assembly method of the main PCB unit 340 will be described.

The structure of the main PCB unit will be described in detail below.

8 is a perspective view of the main PCB unit according to an embodiment of the present invention, FIG. 9 is a front view of the main PCB unit of FIG. 8, and FIGS. 10 and 11 are the main PCB unit of FIG. It is an exploded perspective view of. FIG. 12 is a perspective view of the PCB connector of the present invention.

With reference to FIGS. 8 to 12, the main PCB unit 340 according to this embodiment can include a main PCB 341.

The main PCB 341 may be separated into a plurality of PCBs so that the main PCB 341 is located in the space formed by the second extension portion 320. That is, the main PCB 341 can include a first PCB 342 and a second PCB 344.

The first PCB 342 and the second PCB 344 can be arranged in parallel in an upright position. The first PCB 342 and the second PCB 344 may be arranged horizontally apart from each other.

Between the first PCB 342 and the second PCB 344, one or more connecting terminals 348 for connecting the two PCBs 342 and 344 to each other may be located.

The main PCB unit 340 may further include a PCB connector 350 for connecting the first PCB 342 and the second PCB 344.

The PCB connector 350 can mechanically connect the first PCB 342 and the second PCB 344.

The PCB connector 350 can include a connector body 351 to which the first PCB 342 and the second PCB 344 can be rested on the upper side.

The connector body 351 can be formed in a plate shape. The PCB connector 350 may further include one or more spacers 352 for maintaining a state in which the first PCB 342 and the second PCB 344 are separated from each other.

At this time, the one or more spacers 352 can project downward from the lower surface 351a of the connector body 351.

Bonding projections 353 for coupling with the first PCB 342 and the second PCB 344 may be formed on both side surfaces of the one or more spacers 352. Then, each of the PCBs 342 and 344 may be provided with protrusion coupling portions 346 and 347 for binding the coupling protrusion 353. The protrusion coupling portions 346 and 347 can be grooves or holes.

In the present specification, the PCB connector 350 and the main PCB 341 coupled to each other can be referred to as a main PCB assembly.

With the coupling projection 353 of the PCB connector 350 coupled to the projection coupling portions 346 and 347 of each of the PCBs 342 and 344, the connector body 351 can be rested on the upper surfaces of the first PCB 342 and the second PCB 344. The width of the one or more spacers 352 may be formed smaller than the width of the connector body 351.

Further, the one or more spacers 352 may be arranged so as to be separated from the widthwise end portions 351b and 351c of the connector body 351.

When the connector body 351 is attached to the upper surfaces of the first PCB 342 and the second PCB 344 in a state where the coupling projection 353 of the PCB connector 350 is coupled to the projection coupling portions 346 and 347 of the PCBs 342 and 344, the connector body 351 is attached to the upper surfaces of the first PCB 342 and the second PCB 344. It has the advantage that the height of the main PCB unit 340 can be reduced.

Of course, it is also possible to separate the connector body 351 from the upper surface of the first PCB 342 and the second PCB 344 in a state where the coupling projection 353 of the PCB connector 350 is coupled to the protrusion coupling portions 346 and 347 of the PCBs 342 and 344. Is.

Further, when the one or more spacers 352 are arranged so as to be separated from the widthwise end portions 351b and 351c of the connector body 351, the coupling protrusion 353 of the PCB connector 350 is a protrusion of each of the PCBs 342 and 344. There is an advantage that the width of the main PCB unit 340 can be reduced in a state of being coupled to the coupling portions 346 and 347.

When the PCB connector 350 includes a plurality of spacers 352, the plurality of spacers 352 may be arranged apart in the longitudinal direction of the connector body 351.

The PCB connector 350 may include a coupling hook 357 for coupling to the handle body 332.

At this time, the coupling hook 357 can extend horizontally from the connector body 351.

A reinforcing rib 354 is provided on the lower surface 351a of the connector body 351 so that the coupling hook 357 is prevented from being damaged in the process of connecting the PCB connector 350 and the handle body 332 by the coupling hook 357. obtain.

The reinforcing rib 354 may project from the lower surface 351a of the connector body 351 to connect the coupling hook 357 and the one or more spacers 352, although not limiting.

If the PCB connector 350 includes a plurality of spacers 352, the reinforcing rib 354 may connect the spacer 352 closest to the coupling hook 357 and the coupling hook 357 among the plurality of spacers 352. can.

Any one of the first PCB 342 and the second PCB 344 may be provided with a light emitting unit 370 for displaying the state of the vacuum cleaner 1.

FIG. 11 shows that the second PCB 344 is provided with the light emitting unit 370 as an example. The light emitting unit 370 can include one or more LEDs. As an example, FIG. 11 shows that the light emitting section 370 includes a plurality of LED 371, 372, 373 that are spaced apart in a direction parallel to the longitudinal direction of the connector body 351.

Although not limited, the plurality of LEDs 371, 372, and 373 can be used to display the remaining amount of the battery 40, the suction input strength of the suction motor 20, and the like.

The connector body 351 may be provided with a plurality of light openings 355 for passing light emitted from the plurality of LEDs 371, 372, 373.

The plurality of optical openings 355 may be arranged apart from each other in the longitudinal direction of the connector body 351. When the PCB connector 350 is connected to each of the PCBs 342 and 344, the plurality of optical openings 355 may be arranged in the plurality of optical openings 355. It can be aligned with LEDs 371, 372, 373.

The one or more spacers 352 are located in the region between two adjacent light openings 375 so that the one or more spacers 352 do not interfere with the light emitted from the plurality of LEDs 371, 372, 373. ..

In this case, the spacer 352 not only does not interfere with the light emitted from each of the LEDs 371, 372, 373, but also serves to prevent mutual interference between the lights emitted from the two adjacent LEDs. .. That is, the spacer 352 serves to partition the path of the light emitted from the two adjacent LEDs.

Each of the PCBs 342 and 344 can include extension portions 343 and 345 for supporting the power PCB (Power PCB). The extension portions 343 and 345 support the power PCB (Power PCB) in an inclined state. Can include inclined surfaces 343a and 345a for the purpose.

Any one of the first PCB 342 and the second PCB 344 may be provided with a first connecting terminal 349 for being connected to the power PCB.

FIG. 11 shows, as an example, that the first connecting terminal 349 is located at the first extension portion 343 of the first PCB 342.

Any one of the first PCB 342 and the second PCB 344 may be connected to the connector 400 provided on the main body 20.

Hereinafter, as an example, the connector 400 will be described as being connected to the second PCB 344.

The main PCB unit 340 may further include each of the PCBs 342, 344 and a PCB cover 360 covering the upper side of the PCB connector 350.

The PCB cover 360 can include an upper surface portion 361 that covers the upper surface of the PCB connector 350, and a pair of side surface portions 362 and 363 that extend downward from both stages of the upper surface portion 361.

The pair of side surface portions 362, 363 can not only cover the PCB connector 350, but also cover a part of the upper side of each of the PCBs 342 and 344.

The pair of side surface portions 362, 363 can prevent each PCB 342, 344 connected to the PCB connector 350 from moving horizontally in the handle 30.

The PCB cover 360 covers a plurality of light openings 355 of the connector body 351. At this time, the PCB cover 360 may be provided with a plurality of light transmitting portions 364 so that the light passing through the plurality of light openings 355 can pass through the PCB cover 360. The number of the plurality of light transmitting portions 364 is the same as that of the plurality of light openings 355, and the plurality of light transmitting portions 364 are arranged so as to face the plurality of light openings 355.

The plurality of light transmitting portions 364 can project upward from the upper surface portion 361 of the PCB cover 360.

In the PCB cover 360, at least a plurality of light transmitting portions 364 may be transparent or translucent.

On the other hand, the second PCB 344 can include a plurality of contact pads for being electrically connected to the connector.

The plurality of contact pads may be provided on both sides of the second PCB 344.

The plurality of contact pads may include one or more first pads 3442 provided on the first surface 3440a of the second PCB 344 and a second pad 3444 disposed apart from the first pad 3442. .. The first pad 3442 and the second pad 3444 are arranged so as to be separated from each other in the horizontal direction as an example.

Further, the plurality of contact pads are arranged apart from one or more third pads 3443 provided on the second surface 3440b, which is the opposite surface of the first surface 3440a of the second PCB 344, and the third pad 3443. The fourth pad 3445 and the like can be further included. The third pad 3443 and the fourth pad 3445 are arranged so as to be separated from each other in the horizontal direction as an example.

Then, on the second PCB 344, the first pad 3442 and the third pad 3443 are arranged so as to face each other, and the second pad 3444 and the fourth pad 3445 are arranged so as to face each other.

The second PCB 344 may be provided with a slit 3441 for connecting the second PCB 344 and the connector 400 in place.

The slit 3441 is located between the first pad 3442 and the second pad 3444. Therefore, the slit 3441 is also located between the third pad 3443 and the fourth pad 3445. The slit 3441 can be formed by incising one end of a second PCB 344 in which the plurality of pads are formed.

13 is a perspective view of the connector according to an embodiment of the present invention, FIG. 14 is a plan view of the connector of FIG. 13, and FIG. 15 is a perspective view showing a state in which the main PCB unit and the connector are connected. FIG. 16 is a cross-sectional view showing a state in which the second PCB and the connector are connected.

Referring to FIGS. 13 to 16, the connector 400 of the present embodiment includes a first connecting body 410, a second connecting body 420 separated from the first connecting body 410, the first connecting body 410, and the second connecting body 410. It can include a connecting body 430 that connects the connecting bodies 420.

Since the second PCB 344 is coupled to the connector 400 from above to below the connector 400, the connecting body 430 can connect the lower side of the first connecting body 410 and the second connecting body 420. ..

Therefore, a PCB accommodating space 450 for accommodating the second PCB 344 is defined between the first connecting body 410 and the second connecting body 420.

One or more first connecting pins 442 and a second connecting pin 443 separated from the first connecting pin 442 may be provided on one surface of the first connecting body 410 facing the second connecting body 420. The first connecting pin 442 and the second connecting pin 443 may be arranged horizontally apart from each other.

One or more third connecting pins 444 and a fourth connecting pin 445 separated from the third connecting pin 444 may be provided on one surface of the second connecting body 420 facing the first connecting body 410. The third connecting pin 444 and the fourth connecting pin 445 may be arranged horizontally apart from each other.

The first connecting pin 442 and the third connecting pin 444 may be arranged so as to face each other at positions separated from each other. The second connecting pin 443 and the fourth connecting pin 445 may be arranged so as to face each other at positions separated from each other.

A part of the connecting pins 442 to 445 is located inside the connecting bodies 410 and 420, and the other part can project from the connecting bodies 410 and 420 into the PCB accommodation space 450. ..

Each of the connecting pins 442 to 445 is, for example, an elastically deformable conductor, and the connecting pins 442 to 445 are projected from the connecting bodies 410 and 420 by an external force. It can be moved in a direction that is pulled inside the 420.

Alternatively, the connecting pins 442 to 445 are conductors and may be provided so as to be fixed in position on the connecting bodies 410 and 420.

The PCB accommodating space 450 may be provided with a slit insertion protrusion 412 for being inserted into the slit 3441 of the second PCB 344.

The slit insertion protrusion 412 may be located in the region between the first connecting pin 442 and the second connecting pin 443. Therefore, the slit insertion protrusion 412 is located in the region between the third connecting pin 444 and the fourth connecting pin 445.

The slit insertion protrusion 412 can project from the connecting body 430 into the PCB accommodating space 450. As an example, the slit insertion protrusion 412 can project upward from the connecting body 430.

Alternatively, the slit insertion protrusion 412 is provided on any one of the connecting bodies 410 and 420, and can project toward the other one. Alternatively, the slit insertion protrusion 412 can connect the first connecting body 410 and the second connecting body 420.

Any one of the first connecting body 410 and the second connecting body 420 may be provided with a protrusion anchoring portion 414 to which the separation prevention rib 136a described in FIG. 6 is anchored. FIG. 13 shows, as an example, that the first connecting body 410 is provided with a protrusion anchoring portion 414.

On the other hand, the second PCB 344 can be accommodated in the PCB accommodating space 450 from above to below the connector 400.

In the process of accommodating the second PCB 344 in the PCB accommodating space 450, the slit insertion projection 412 may be inserted into the slit 3441 of the second PCB 344.

As described above, the state in which the slit insertion protrusion 412 is housed in the slit 3441 of the second PCB 344 is a state in which the second PCB 344 is normally connected to the connector 400.

In this state, as shown in FIG. 16, the pads 3442 to 3445 come into contact with the connecting pins 442 to 445 at a fixed position.

According to the present invention, the slit insertion protrusion 412 is housed in the slit 3441 of the second PCB 344, and the pads 3442 to 3445 come into contact with the connecting pins 442 to 445. Therefore, the second PCB 344 and the connector 400 are erroneously assembled. Has the advantage of being prevented.

Further, as the misassembly of the second PCB 344 and the connector 400 is prevented, it is possible to prevent a short circuit due to the two adjacent pads being connected by one connecting pin.

According to the present invention, the second PCB 344 is inserted between the two connecting bodies 410 and 420, and the slit insertion protrusion 412 is accommodated in the slit 3441 of the second PCB 344, whereby the second PCB 344 and the said. It has the advantage of not requiring additional fixing means such as hooks for fixing the connector 400.

Further, in the present invention, the first connecting pin 442 and the third connecting pin 444 play the same role, and the second connecting pin 443 and the fourth connecting pin 445 play the same role.

Further, in the second PCB 344, the first pad 3442 and the third pad 3443 play the same role, and the second pad 3444 and the fourth pad 3445 play the same role.

Therefore, pads 3442 to 3445 are provided on both sides of the second PCB 344, and by inserting the second PCB 344 between the two connecting bodies 410 and 420, one of the pads 3442 to 3445 on both sides of the second PCB 344 can be used. Since signal transmission is possible only by connecting the 3445 to the connecting pins 442 to 445, the connection accuracy of the second PCB 344 and the connector 400 can be improved.

At this time, it is also possible to form a wedge in the slit insertion protrusion 412 so as to improve the coupling force between the second PCB 344 and the connector 400, and to form an additional groove for wedge coupling in the slit 3441.

FIG. 17 is a perspective view of a handle body according to an embodiment of the present invention, FIG. 18 is a cross-sectional view showing an internal structure of the handle, and FIG. 19 is a state in which a main PCB unit is coupled to the handle body. FIG. 20 is a view showing a state in which the power PCB is settled on the support rib in a state where the main PCB unit is connected to the handle body, and FIG. 21 is a view showing the handle cover in the state of FIG. It is a figure which shows how the operation part is connected.

FIG. 22 is a diagram showing how the handle portion is connected to the main body in a state where the assembly of the handle portion according to the embodiment of the present invention is completed.

A storage space 322 for accommodating the main PCB unit 340 may be formed in the handle body 332. The accommodation space 322 is a space substantially formed in the second extension portion 320.

The handle body 332 can include a supporter 324 that supports the main PCB unit 340.

The supporter 324 has a landing surface 324a on which the main PCB unit 340 is landed, a first rib 324b that supports a first PCB 342 seated on the landing surface 324a, and a landing surface 324a. It can include a second rib 324c that supports the second PCB 344 that has been made.

Each of the ribs 324b and 324c can project upward from the landing surface 324a.

The first rib 324b and the second rib 324c can prevent the main PCB unit 340 supported by the supporter 324 from moving in the left-right direction with reference to FIG.

Further, the first rib 324b and the second rib 324c guide the pull-in of the main PCB assembly in the process of accommodating the main PCB assembly in the accommodation space 322 of the handle body 332.

The handle body 332 can further include a plurality of insertion holes 327 for inserting the plurality of light transmitting portions 364 of the PCB cover 360.

With the plurality of light transmitting portions 364 inserted into the plurality of insertion holes 327, the plurality of light transmitting portions 364 may be exposed to the outside of the handle 30. Therefore, the user can visually confirm the light emitted from the plurality of LEDs 371, 372, and 373 by the plurality of light transmitting units 364.

In the case of this embodiment, since the plurality of light transmitting portions 364 are inserted into the plurality of insertion holes 327, external moisture or foreign matter may move to the main PCB 341 side via the plurality of insertion holes 327. Can be prevented.

The handle body 332 can further include a connector coupling portion 325 that couples with the PCB connector 350 in the process of accommodating the main PCB assembly in the accommodation space 322.

The connector coupling portion 325 may be provided with a through hole 325a for the coupling hook 357 of the PCB connector 350 to penetrate and a hook locking rib 325b for locking the coupling hook 357 penetrating the through hole 325a. ..

On the other hand, the power PCB 380 can include a first switch 382 and a second switch 384 for receiving an input of an operation command of the operation unit 390. Although not restrictive, the first switch 382 can receive an input of an on or off command of the suction motor 20, and the second switch 384 adjusts the strength of the suction input of the suction motor 20. You can receive the input of the command for.

The handle body 332 may further include a support rib 326 for supporting the power PCB 380. The support rib 326 can extend downward from the connector coupling portion 325.

The support rib 326 may include an inclined surface 326a for allowing the power PCB 380 to be arranged in an inclined state. Therefore, the heights of the first switch 382 and the second switch 384 are different while the power PCB 380 is supported by the inclined surface 326a.

When the main PCB unit 340 is coupled to the handle body 332, the support rib 326 is located between the first PCB 342 and the second PCB 344. At this time, the support rib 326 is separated from each of the first PCB 342 and the second PCB 344 so as to prevent the main PCB 341 from being damaged by the support rib 326 in the bonding process of the main PCB unit 340.

The inclination angle of the inclined surface 326a of the support rib 326 may be the same as the inclination angle of the inclined surfaces 343a and 345a of the extension portions 343 and 345 of the respective PCBs 342 and 344.

Therefore, the inclined surfaces 343a and 345a of each of the PCBs 342 and 344 and the inclined surfaces 326a of the support ribs 326 can support the power PCB 380.

Of course, it is also possible to separate the inclined surfaces 343a and 345a of the respective PCBs 342 and 344 from the power PCB 380 in a state where the power PCB 380 is in contact with the inclined surface 326a of the support rib 326.

In order to prevent the power PCB 380 in contact with the inclined surface 326a of the support rib 326 from moving in the left-right direction with reference to FIG. 15, the handle body 332 further includes an engaging rib 326b penetrating the power PCB 380. Can include. Then, a slit 386 for the engaging rib 326b to penetrate may be formed in the power PCB 380.

The engaging rib 326b may be located below the supporting rib 326. When the power PCB 380 is settled on the inclined surface 326a of the support rib 326, the engaging rib 326b is engaged with the slit 386. It can be prevented from slipping downward along the inclined surface 326a of 326.

The handle body 332 can further include an upper stopper 328 for preventing the power PCB 380 anchored to the support rib 326 from moving upward.

The handle body 332 can further include a fastening boss 329 for fastening to the power PCB 380 anchored to the support rib 326 by a fastening member (not shown) such as a screw.

The power PCB 380 may be formed with a through hole 381 through which the fastening member penetrates.

On the other hand, the operation unit 390 can include a support frame 396 for being fastened to the handle cover 334 and an operation button 391 coupled to the support frame 396.

The operation button 391 can include a first push unit 392 for pressing the first switch 382 and a second push unit 394 for pressing the second switch 384. That is, one operation button 391 can include two push portions 392 and 394.

In the case of the present invention, since the first switch 382 and the second switch 384 are arranged at different heights and the power PCB 380 is tilted, the user holds the handle 30 with one finger. The operation button 391 can be operated to push the first switch 382 or the second switch 384. Therefore, the convenience of operation of the user can be improved.

Hereinafter, the assembly process of the main PCB unit 340 and the power PCB 380 will be described.

First, with the PCB cover 360 pulled into the accommodation space 322 of the handle body 332, the light transmitting portion 364 of the CP cover 360 is inserted into the insertion hole 327 of the handle body 332.

Then, the first PCB 342 and the second PCB 344 are connected to the PCB connector 350 to complete the main PCB assembly, and the main PCB assembly is placed in the space between the PCB cover 360 and the supporter 324 of the handle body 332. insert.

In the process of inserting the main PCB assembly, the pair of side surface portions 362, 363 of the PCB cover 360 and the first and second ribs 324b, 324c of the supporter 324 guide the insertion of the main PCB assembly.

When the main PCB assembly is inserted into the accommodation space 322 of the handle body 332, the coupling hook 357 of the PCB connector 350 penetrates the hook through hole 325a and is locked to the hook locking rib 325b. , The assembly of the main PCB assembly is completed.

In this state, with the power PCB 380 resting on the support rib 326 as shown in FIG. 20, the power PCB 380 can be fixed to the handle body 332 using a fastening member.

The power PCB 380 is fixed to the handle body 332 at substantially the same height as the main PCB 341.

Next, as shown in FIG. 21, the handle cover 334 can be coupled to the handle body 332, and then the operation unit 390 can be coupled to the handle cover 334.

Then, as shown in FIG. 22, when the handle portion 3 is aligned with the main body 2 and then the handle portion 3 is slid downward, the handle portion 3 can be fixed to the main body 2.

According to the proposed invention, since the main PCB 341 is housed in the handle body 332 in a state of being divided into two PCBs, there is an advantage that the size of the main PCB 341 can be reduced.

In particular, since the two PCBs are housed in the handle body in a parallel state and an upright state, there is an advantage that the size of the main PCB unit 340 is minimized.

Further, in the process of inserting the main PCB assembly into the accommodation space 322 of the handle body 332 with the two PCBs connected to the PCB connector 350, the main PCB assembly can be coupled to the handle body 332. There is an advantage that the structure for fixing the two PCBs to each other and the structure for fixing the two PCBs to the handle body 332 are simplified, and the assembly process of the user is easy.

Further, since the second PCB 344 is connected to the connector in the process of sliding the handle portion 3 with respect to the main body 2, there is an advantage that the process of connecting the second PCB 344 to the connector is unnecessary. ..

Claims (18)

It ’s a vacuum cleaner
Suction motor for generating suction input;
A suction unit that guides air and dust sucked by the suction input generated by the suction motor;
A main body including a dust separating portion for separating dust from the air guided by the suction portion and accommodating the suction motor ;
A main PCB capable of generating control commands for the suction motor and having a first PCB and a second PCB separated from each other;
Ri Na comprises a PCB connector coupled to the handle portion while connecting and said second 1PCB and the second 2PCB,; handle portion that can accommodate the main PCB
The handle portion
The first extension that extends in the vertical direction and
A second extension portion extending horizontally from the upper portion of the first extension portion toward the suction motor in the main body is provided.
A vacuum cleaner in which the PCB connector, the first PCB, and the second PCB are horizontally inserted into the second extension portion of the handle portion in a state where the first PCB and the second PCB are coupled to the PCB connector. The vacuum cleaner according to claim 1, wherein the PCB connector includes a coupling hook for being coupled to the handle portion. The handle portion includes a handle body.
The handle body is provided with a storage space for accommodating the main PCB and the PCB connector, and a connector coupling portion to which a coupling hook of the PCB connector accommodated in the accommodation space is bonded. Item 2. The vacuum cleaner according to item 2. The vacuum cleaner according to claim 3, wherein the first PCB and the second PCB are arranged in parallel with the first PCB and the second PCB connected to the PCB connector. The vacuum cleaner according to claim 3, wherein the coupling hook of the PCB connector is coupled to the connector coupling portion in a state where the first PCB and the second PCB are vertically coupled to the PCB connector. The handle body further comprises a supporter for supporting the main PCB housed in the storage space.
The supporter has a resting surface on which the main PCB is rested, and
3. The third aspect of claim 3, further comprising a first rib that supports the first PCB anchored to the anchoring surface and a second rib that supports the second PCB anchored to the anchoring surface. Vacuum cleaner. The PCB connector includes a connector body provided with the coupling hook and a connector body.
A spacer protruding from the connector body and
The vacuum cleaner according to claim 2, further comprising coupling protrusions protruding from both sides of the spacer and connecting to each of the first PCB and the second PCB. The vacuum cleaner according to claim 7, wherein the connector body is attached to one surface of the first PCB and the second PCB in a state where the first PCB and the second PCB are bonded to the coupling projections on both sides of the spacer. .. The vacuum cleaner according to claim 7, wherein the connector body is provided with reinforcing ribs for preventing damage to the connecting hook. The spacer is composed of a plurality of spacers.
The plurality of spacers are arranged so as to be separated from each other from the connector body.
The vacuum cleaner according to claim 9, wherein the reinforcing rib connects one of the plurality of spacers with the coupling hook. One of the first PCB and the second PCB is provided with a light emitting unit for irradiating light.
The vacuum cleaner according to claim 7, wherein the connector body is provided with a light opening for passing light emitted from the light emitting portion. Further provided with a PCB cover covering the main PCB and the PCB connector.
The vacuum cleaner according to claim 11, wherein the PCB cover is provided with a light transmitting portion through which light passing through the light opening is transmitted. The PCB cover includes an upper surface portion that covers the PCB connector and
Both cut portions of the upper surface portion are provided with a pair of side surface portions extending downward.
The vacuum cleaner according to claim 12, wherein the pair of side surface portions covers a side surface of the PCB connector, a part of the first PCB, and a part of the second PCB. The light transmitting portion protrudes from the PCB cover,
The vacuum cleaner according to claim 12, wherein the handle portion includes an insertion hole into which the light transmitting portion is inserted. An operation unit provided on the handle unit and
Further equipped with a power PCB which is connected to the main PCB and receives an input of an operation command of the operation unit.
The vacuum cleaner according to claim 3, wherein the handle body further includes a support rib for supporting the power PCB in a state of being inclined in a direction in which the PCB connector is coupled to the handle body. The vacuum cleaner according to claim 15, wherein the power PCB is fixed to the handle body at the same height in a direction in which the main PCB and the longitudinal axis of the suction portion penetrate. The vacuum cleaner according to claim 15, wherein the main PCB supports the power PCB anchored to the support rib. It ’s a vacuum cleaner
Suction motor for generating suction input;
A suction unit that guides air and dust sucked by the suction input generated by the suction motor;
A main body provided with a dust separating unit for separating dust from the air sucked by the suction unit and accommodating the suction motor;
A control command for the suction motor can be generated, and the main PCB assembly is provided with a plurality of PCBs; and a handle portion to which the main PCB assembly is connected is provided.
The handle portion includes a first extension portion through which the longitudinal axis of the suction portion penetrates, and a first extension portion.
It is provided with a second extension portion extending horizontally from the upper portion of the first extension portion toward the suction motor of the main body.
The main PCB assembly is coupled to the handle portion in the process of being housed in the second extension portion.
The plurality of PCBs are arranged apart from each other in a direction intersecting the extension direction of the second extension portion, and are inserted into the second extension portion in a horizontal direction parallel to the extension direction of the second extension portion. Vacuum cleaner to be done.

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