JP2015150147A - dust collector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collector configured to have a detachable power cord.SOLUTION: The dust collector includes: a tank; a body detachable with respect to an upper part of the tank; and a power cord 50 that is connectable to a cord connection part 46 provided at the body. A cover 58 for opening/closing the cord connection part 46 along with a storage part includes a retaining protrusion 65 that comes into contact with a bend regulation part 52 of the power cord 50 at a closure position of the cover 58 and prevents the power cord 50 from coming off from the body 3.

Description

  The present invention relates to a dust collector in which a main body including a drive unit is detachably provided on an upper part of a tank that stores dust and the like.

  The dust collector is detachably mounted on the top of the tank, for example, a main body containing a motor equipped with a blower fan as a drive unit. When the blower fan is rotated by driving the motor, the dust collector is connected to a suction port provided in the tank. By sucking outside air through the hose and passing through the inside of the tank and the main body, dust or the like sucked together with outside air is captured by a filter provided in the tank and stored in the tank. Such a dust collector is known which includes a power cord and uses a commercial power source as a power source (for example, Patent Document 1).

JP 2010-119505 A

  In such a dust collector, for example, when the AC / DC common type in which the battery can also be used as a power source is used, there is a type in which the power cord is detachable in consideration of ease of use. However, when the power cord is detachable, a lock mechanism is provided between the main body and the cord to prevent the power cord from being disconnected during work, and waterproof measures are taken to prevent water from entering the contact portion. It was necessary, and the structure was complicated, leading to an increase in cost.

  Accordingly, an object of the present invention is to provide a dust collector that can be configured to have a power cord with a simple configuration even if it has a detachable power cord.

In order to achieve the above-mentioned object, the invention described in claim 1 includes a tank, a main body detachably attached to an upper portion of the tank, a cord connectable to the main body, and a cord provided in the main body. And a drop prevention portion for preventing the drop.
According to a second aspect of the present invention, in the configuration of the first aspect, a cover for covering the cord connecting portion to which the cord is connected is provided, and a removal preventing portion is provided on the cover.
According to a third aspect of the present invention, in the configuration of the second aspect, the main body is provided with a battery connecting portion to which a battery can be connected, and the cover covers the cord connecting portion and the battery connecting portion at the same time. It is what.
According to a fourth aspect of the present invention, in the configuration of the second or third aspect, ribs positioned inside the cover are provided on the left and right sides of the cord in the cord connecting portion.
The invention according to claim 5 is a tank, a main body detachably attached to the upper part of the tank, a battery connecting portion provided in the main body and connectable to a battery, and a cord connecting portion provided in the main body and connectable with a cord. And a cover that covers the battery connection portion and the cord connection portion.

  According to the present invention, it is possible to have a cord with a simple configuration by providing the disconnection prevention portion that prevents the cord connected to the cord connection portion from coming off.

It is a perspective view from the front of a dust collector. It is a perspective view from the back of a dust collector. It is a longitudinal cross-sectional view of a dust collector. It is an expanded sectional view of the connection part of a handle and a cover. It is a perspective view from the back of a dust collector (a cover is an open position and a power cord is not connected). It is a perspective view from the back of a dust collector (a cover is an open position and a power cord is connected). It is an expanded sectional view of a cord connection part. It is a perspective view from the back of a dust collector (a power cord is connected). It is a perspective view from the back of the dust collector which combined the storage box (a cover is an open position and a power cord is connected). It is a perspective view from the back of the dust collector which combined the storage box (a cover is a closed position and a power cord is connected). It is a top view of the dust collector which combined the storage box. It is an expanded sectional view of the joint part of a storage box. It is a perspective view from the back of the dust collector which has the plug receptacle of the example of a change (a cover is an open position and a power cord is unconnected). It is a perspective view from the back of the dust collector which has the plug receptacle of the example of a change (a cover is an open position and a power cord is connected). It is an expanded sectional view of a cord connection part.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 are external views showing an example of a dust collector. FIG. 3 is a longitudinal sectional view of the dust collector. The dust collector 1 includes a motor 11 and a blower fan 16 serving as a driving unit above a tank 2 having an upper end opened. The main body 3 is placed, and the main body 3 can be attached to and detached from the tank 2 by engaging the latches 4 and 4 provided on the left and right sides of the tank 2 with the side surfaces of the main body 3 while the main body 3 is placed. Combined. A suction port 5 to which a hose (not shown) can be connected is provided on the front surface of the tank 2, and a pair of casters 6, 6... (The rear casters 6, 6 are stoppers) With) is provided. A guide tube 7 that guides the air sucked into the tank 2 downward is attached to the suction port 5.

  The main body 3 has a lower cowling 8 that closes the opening of the tank 2, and an upper cowling 9 that is coupled to the lower cowling 8 and covers the upper surface and the peripheral surface of the main body 3. A housing portion 10 for the motor 11 is formed in the approximate center of 3. The motor 11 has a stator 12 fixed in the housing portion 10 and a rotor 13 positioned at the center of the stator 12, and an output shaft 14 provided at the axis of the rotor 13 is provided in the housing portion. A blower fan 16 is fixed to the lower end of the output shaft 14 that is pivotally supported downward by the upper and lower bearings 15, 15 provided in 10 and protrudes from the accommodating portion 10. The lower cowling 8 is formed with a cylindrical portion 17 projecting downward just below the housing portion 10, and an intake port 18 provided at the center of the cylindrical portion 17 is coaxially positioned below the output shaft 14. .

  Further, an exhaust passage 19 for air that has passed through the blower fan 16 is formed between the lower cowling 8 and the housing portion 10, and the exhaust passage 19 is an exhaust formed on the left and right side surfaces of the upper cowling 9. It communicates with the mouths 20, 20,. Reference numeral 21 denotes a sound absorbing material (sponge) disposed in the discharge path 19. Further, a support plate 22 is provided between the lower cowling 8 and the opening of the tank 2 to support a cylindrical frame 23 that covers the outer periphery of the cylindrical portion 17, and a filter 24 is provided on the frame 23. The support plate 22 outside the filter 24 is provided with an elastic member 25 that is located inside a bag-like prefilter (not shown) and that restores the prefilter that has contracted during suction to its original shape.

On the other hand, an operation panel 26 is provided in front of the main body 3. The operation panel 26 is provided with a dial-type operation switch 27, a dial-type suction force adjusting knob 28, and display units 29a and 29b indicating two battery pack mounting states and remaining capacity states, which will be described later. It has been. Here, a push-down operation switch 30 is also provided above the operation panel 26. The operation switch 30 has a plurality of protrusions 30a that prevent slipping on the left and right sides, and a switch display portion 30b that is disposed between them. It has become. Moreover, as shown in FIG. 3, since it has the inclination part 30c which inclines down as it goes ahead, it becomes easier to operate. These are connected to a controller (not shown) provided on the back side of the operation panel 26.
A handle 31 is provided on the upper portion of the main body 3. As shown in FIG. 4, the handle 31 has a U-shaped handle rotation shafts 32 and 32 that are provided so as to be opposed to the inner sides of the left and right ends. By being inserted into and held by the portions 33, 33, a standing position protruding upward from the upper cowling 9 and a lying position for lying forward are rotatably connected. In the lying down position, the handle 31 does not protrude from the upper surface of the upper cowling 9 by fitting into the concave portion 34 of the same shape provided in the upper surface of the upper cowling 9. Reference numeral 35 denotes an escape recess that is formed in the upper cowling 9 in a continuous manner with the recess 34 at the rear center of the recess 34 and facilitates pulling of the handle 31 from the lying position.

  A receiving portion 36 is formed at the rear portion of the upper cowling 9 in the center in the left-right direction. The housing portion 36 is a concave portion with the center of the rear surface positioned forward of the rearmost surface of the upper cowling 9 and the center of the upper surface positioned lower than the uppermost surface of the upper cowling 9, and the battery pack 38 is disposed on the rear surface. Two detachable battery connection portions 37 are provided. The battery pack 38 is also used as a power source for an electric tool, and has a well-known configuration in which a coupling portion in which connection terminals are arranged between left and right rail portions is provided on the upper surface of a case containing a plurality of storage batteries. Yes. Therefore, the battery connection portion 37 is provided with a pair of left and right guide rails 39, 39, into which the rail portion of the coupling portion can be fitted, in the same manner as in the form of the electric tool for mounting the battery pack 38, and the terminal plate 41 therebetween. , 41 is provided so as to face upward, and the battery pack 38 is vertically oriented so that it can be inserted into the battery connecting portion 37 from above. For this reason, it is easy to insert the battery pack 38. Further, a recess 42 having a semicircular cross section is formed in the left-right direction on the upper surface of the storage portion 36 so that small items such as tools can be stored.

  Further, the upper cowling 9 on the left and right sides of the accommodating portion 36 is formed with step portions 43 and 43 that are lower than the uppermost surface of the upper cowling 9, and the right step portion 43 has a step portion 43 as shown in FIG. In addition, a cord connecting portion 46 is provided. The cord connecting portion 46 is provided with a plug receiver 47 having a metal terminal 48 in the vertical plate portion 44 forming the step portion 43 in a rearward direction, and is erected at the rear end of the horizontal plate portion 45 behind the plug receiver 47. The piece 49 is erected. As shown in FIGS. 6 and 7, the power cord 50 has a connection plug 51 to be inserted into the plug receiver 47 at one end and a plug (not shown) to be inserted into an outlet at the other end. Further, a bending restricting portion 52 having a diameter larger than that of the cord is continuously provided so that the power cord 50 passes above the upstanding piece 49 when the connection plug 51 is inserted.

Further, in the state where the base end of the elastic cover 53 is fixed to the horizontal plate portion 45 by the screw 54 inside the upright piece 49 and the power cord 50 is not inserted, the front end portion 55 of the elastic cover 53 is connected to the upright piece 49. It is possible to place it on the upper end of the extension. When the power cord 50 is inserted, the elastic cover 53 in contact with the connection plug 51 is bent inward to retract the tip 55 from the upright piece 49.
In addition, on the left and right sides of the horizontal plate portion 45, small ribs 56 and 56 are provided standing on the left and right sides of the connection plug 51 inserted into the plug receiver 47.
On the other hand, the upper cowling 9 between the left step 43 and the handle 31 is a pipe support capable of supporting the pipe in the vertical direction by engaging a hook (not shown) provided on an extension pipe connected to the hose. A portion 57 is provided. The pipe support portion 57 is disposed so that the supported pipe does not interfere with the opening and closing of the cover 58 and does not interfere even when the handle 31 stands up.

  58 is a cover that covers the accommodating portion 36 and the left and right step portions 43, 43, an upper plate portion 59 that covers the upper portion of the accommodating portion 36 and the step portions 43, 43, and a rear portion of the accommodating portion 36 and the step portions 43, 43. And a rear plate portion 60 that covers the rear side and the side. The front end portion of the upper plate portion 59 extends forward with a width that fits between both end portions of the handle 31, and the upper cowling is formed by the cover rotation shaft 61 in the left-right direction between the handle rotation shaft 32 of the handle 31 and the escape recess 35. 9 (FIG. 4). Therefore, the cover 58 rotates so that the upper plate portion 59 faces upward to open the accommodation portion 36 and the step portions 43 and 43, and the upper plate portion 59 is on the upper surface and the extension surface of the upper cowling 9. Thus, it can rotate between the closed position that covers the accommodating portion 36 and the step portions 43 and 43. As described above, the cover rotation shaft 61 of the cover 58 is disposed in front of the handle rotation shaft 32, so that the front and rear dimensions of the upper plate portion 59 are formed so that the accommodating portion 36 can be greatly opened at the open position. Yes. Further, a hook 62 is provided at the lower end of the rear plate portion 60 so as to be elastically locked to a locked portion 63 provided on the lower cowling 8 at the closed position of the cover 58.

Further, a notch 64 is formed on the right side of the rear plate portion 60 of the cover 58 so that the standing piece 49 of the cord connecting portion 46 is fitted at the closed position. This notch 64 is formed deeper than the height of the upright piece 49, and a space through which the power cord 50 can pass as shown in FIG. It comes to form. When the power cord 50 is not provided, the distal end portion 55 of the elastic cover 53 is fitted to close the space (FIG. 2).
Further, on the inner surface of the upper plate portion 59 of the cover 58, the connection plug 51 of the power cord 50 is inserted into the plug receiver 47 and the cover 58 is rotated to the closed position, and the bending regulating portion 52 of the power cord 50 is viewed from above. A retaining protrusion 65 is provided as a contact preventing part that comes into contact. As a result, in the direction in which the power cord 50 is pulled out, the connection plug 51 interferes with the retaining projection 65, so that the power cord 50 is prevented from coming off from the plug receiver 47.

  Further, bent portions 66 and 66 are formed on the left and right edges of the upper plate portion 59. The bent portion 66 is located outside the raised portions 67 and 67 formed on the upper cowling 9 on the left and right sides of the accommodating portion 36 by the formation of the concave portion 34 at the closed position of the cover 58. The bent portion 66 is formed with an escape portion 68 that avoids interference with the handle rotation shaft 32 of the handle 31, and the rear end of the bent portion 66 is connected to the rear plate portion 60. Further, on the inner surface of the cover 58 on the inner side of the bent portion 66, there are a strip plate portion 70 erected on the inner surface of the upper plate portion 59 and an inclined plate portion 71 erected on the inner surface of the rear plate portion 60. A pair of horizontal ribs 69, 69 are formed. The lateral rib 69 is positioned inside the left and right inner surfaces of the housing portion 36 at the closed position of the cover 58, and the upper contact step portion with which the belt plate portion 70 contacts the inner surface at the closed position of the cover 58. 72 and a lower contact stepped portion 73 with which the inclined plate portion 71 contacts is formed. Also on the front side of the upper plate part 59, a front plate 74 in the form of a band plate connecting between the front ends of the band plate parts 70, 70 is formed, and a front contact step formed on the front surface of the housing part 36 at the closed position of the cover 58. It can come into contact with the portion 75.

  Therefore, in the closed position of the cover 58, the housing portion 36 is sealed by the horizontal rib 69 and the front rib 74 in addition to the bent portion 66, so that water and dust can be effectively prevented from entering the housing portion 36. be able to. The left step 43 is also provided with a small rib 76 that is continuous with the rising portion 67 and is located outside the lateral rib 69 at the closed position of the cover 58, together with the small rib 56 of the right step 43. Intrusion of water or the like into the accommodating portion 36 is prevented. In addition, at the rear end of the bottom surface of the accommodating portion 36, a return portion 77 is provided upright, which is continuous with the left and right lower abutting step portions 73, 73 and is located inside the rear plate portion 60 at the closed position of the cover 58, The intrusion of water or the like into the accommodating portion 36 is prevented. Further, also in the cord connecting portion 46, the cover 58 and the left and right small ribs 56 prevent water and the like from entering.

On the other hand, the lower cowling 8 at the rear of the dust collector 1 is provided with a pair of coupling portions 78, 78 positioned on the left and right of the locked portion 63, and a storage box 79 can be coupled thereto. As shown in FIGS. 9 to 11, the storage box 79 has a pocket shape that opens upward, and the front wall 80 has a curved shape that matches the outer periphery of the tank 2. 81 and 81 form a first storage part 82 that can store two spare battery packs and the like, and on both sides of the first storage part 82, a cylindrical holding part 84 faces upward so that attachments such as pipes can be stored. A second storage portion 83 is formed. In addition, a pair of fitting projections 85 and 85 projecting in a T shape in plan view are provided on the left and right sides of the front surface of the upper end of the front wall portion 80.
The coupling portion 78 is a T-shaped groove that can receive the fitting protrusion 85 from above. The coupling portions 78 and 78 are exposed when the cover 58 is opened, and the lower end of the rear plate portion 60 of the cover 58 is closed when the cover 58 is closed. It is located above the coupling portions 78, 78.

  Therefore, the storage box 79 is suspended from the lower cowling 8 by fitting each fitting projection 85 of the storage box 79 to the coupling portion 78 from above with the cover 58 rotated to the open position. And it couple | bonds in the state which was prevented from coming out backward. In this state, the fitting protrusion 85 does not protrude upward from the coupling portion 78. Here, when the cover 58 is rotated to the closed position, as shown in FIG. 12, the lower end of the rear plate portion 60 is located above the fitting projection 85, so that the cover 58 is prevented from coming off upward. Thus, the storage box 79 cannot be removed unless the cover 58 is rotated to the open position. A notch 86 is formed at the center of the upper end of the front wall 80 of the storage box 79 so that the hook 62 of the cover 58 can be engaged with and disengaged from the locked portion 63 even when the storage box 79 is coupled. Reference numeral 85a denotes a recessed portion formed in the fitting protrusion 85, and the recessed protrusion 85a allows the fitting protrusion 85 to receive the load due to the weight from the storage box 79 by being elastically deformed.

In the dust collector 1 configured as described above, when the battery pack 38 is used as a power source, one or two battery packs 38 are placed on the battery connection portion 37 of the housing portion 36 exposed by rotating the cover 58 to the open position. Wear from. When the cover 58 is rotated to the closed position, the housing portion 38 and the left and right step portions 43 and 43 are covered.
When any one of the operation switches 27 and 30 is turned on in this state, the motor 11 is driven and the blower fan 16 is rotated. Thus, outside air is sucked into the tank 2 through the hose connected to the suction port 5, passes through the filter 24, reaches the discharge path 19 from the blower fan 16, and is discharged to the outside from the exhaust port 20. Therefore, the dust captured by the filter 24 is stored in the tank 2.
When removing the battery pack 38 for charging or the like, the exposed battery pack 38 can be pulled upward by rotating the cover 58 to the open position in the same manner as when the battery pack 38 is attached. The rear plate portion 60 of the cover 58 interferes with the pipe even when the pipe support portion 57 supports the pipe because the left end portion where the pipe support portion 57 is located is shorter than the right end portion. The cover 58 can be opened and closed without any problem.

On the other hand, when a commercial power source is used as the power source, when the cover 58 is rotated to the open position and the plug 51 of the power cord 50 is inserted into the plug receiver 47 of the cord connection portion 46 exposed, the cover 58 is rotated to the closed position. The accommodating portion 36 and the left and right step portions 43, 43 are covered. At this time, as described above, the power cord 50 is pulled out from the notch 64 to the outside in a state in which the retaining protrusion 65 of the upper plate portion 59 is in contact with the bending restricting portion 52 of the power cord 50 and the power cord 50 is prevented from coming off. It is.
When any one of the operation switches 27 and 30 is turned on in this state, the motor 11 is driven to rotate the blower fan 16, and the dust trapped by the filter 24 is sucked into the tank 2 by the outside air being sucked in as described above. Store.
When removing the power cord 50, if the cover 58 is rotated to the open position as in the case of connection, the retaining projection 65 is also separated from the power cord 50, so that the connection plug 51 can be removed from the plug receiver 47 as it is.

Thus, according to the dust collector 1 of the said form, by providing the retaining protrusion 65 which prevents the power cord 50 connected to the cord connection part 46, the power cord 50 can be retained with a simple configuration. Thus, the power cord 50 can be configured.
In particular, here, the cover 58 that covers the cord connecting portion 46 is provided with the retaining protrusion 65, so that the power cord 50 is prevented from coming off at the same time as the cover 58 is closed, and the retaining structure is released at the same time as being opened. This improves usability. The cover 58 can also protect (waterproof and dustproof) the cord connecting portion 46.

However, the form of the removal preventing part is not limited to the retaining protrusion 65, but a plate-like body provided with a notch to which the cord is fitted, or a retaining protrusion is also provided on the upper cowling side and the power cord is connected to the upper and lower protrusions. It can be changed as appropriate, such as pinching. In addition, the position and orientation of the cord connecting part are not limited to the above-mentioned form, and the cord connecting part and the pipe support part are provided in the left and right direction, the cord connecting part is provided laterally, or provided in the accommodating part if there is a space. You may do it.
Furthermore, the present invention can be applied not only to preventing the power cord of the dust collector from coming off but also to preventing the power cord connected to the interlocking outlet of the electric tool. Therefore, it may be an AC dust collector that uses only a commercial power source as a power source.

  Moreover, according to the dust collector 1 of the said form, the handle | steering-wheel rotating shaft 32 and the cover rotating shaft 61 are mutually parallel, and it mutually overlaps with the other party handle 31 or the cover 58 over the other party rotating shaft. Since they are arranged, the cover 58 can be elongated in the front-rear direction without increasing the product size, and a large opening of the cover 58 can be secured. Accordingly, the battery pack 38 can be easily attached to and detached from the housing portion 36.

However, in the above embodiment, the upper plate portion of the cover is extended between both end portions of the handle and the cover rotation shaft is arranged in front of the handle rotation shaft. By extending the left and right ends of the upper plate portion of the cover to the outside of the both ends of the handle, the cover rotation shaft can be arranged in front of the handle rotation shaft. Further, both end portions of the handle and the left and right ends of the upper plate portion of the cover can be shifted to the left and right so as to overlap each other's rotation shafts.
Furthermore, only an accessory, a tool, etc. may be accommodated in the accommodating part covered with a cover.

  And according to the dust collector 1 of the said form, the removable storage box 79 can be provided in the dust collector 1. FIG. In particular, the cover 58 restricts the movement of the storage box 79 in the disengagement direction at the closed position of the storage portion 36, so that the detachable storage box 79 can be securely fixed at the time of coupling, and the cover 58 can be removed. This can be done easily by opening 58.

However, the cover is not limited to the opening / closing operation in the up / down direction, but may be opened / closed in the left / right direction. However, the present invention can be applied.
In addition, the storage box is not limited to the above-described form, and the number of the connecting portions and the fitting protrusions is increased, the fitting shape is changed (for example, a dovetail fitting is used instead of the T-shape), and the like. It can be changed as appropriate.
Further, the structure of the storage box itself is not limited to the above-described form, such as increasing the number of partition plates, omitting the partition plates and the holding portions, or providing an opening / closing lid on the storage portions.

On the other hand, as shown in FIG. 13, the plug receiver 87 for connecting the power cord 50 is not incorporated in the upper cowling 9, and the cord 88 is pulled out to some extent so that the power cord 50 can be easily connected. 14, if the cover 58 is closed with the plug receiver 87 connected to the connection plug 51 being set on the step 43 as shown in FIG. 14, as shown in FIG. 15. In the direction in which the power cord 50 is pulled out, the rear plate portion 60 of the cover 58 interferes with the connection plug 51, and the power cord 50 can be prevented from coming off. At this time, the cord 88 is housed inside the main body 3 by being bent.
Therefore, in this case, since the rear plate portion 60 serves as a slip prevention portion, the retaining protrusion as described above is not necessary. However, depending on the form of the connection plug 51 or the plug receiver 87, a retaining protrusion may be further provided. Absent.

  1, 1A ... Dust collector, 2 ... Tank, 3 ... Main body, 5 ... Suction port, 8 ... Lower cowling, 9 ... Upper cowling, 11 ... Motor, 16 ... Fan, 24 ... Filter , 31 .. handle, 32 .. handle rotation shaft, 36 .. housing part, 37 .. battery connection part, 38 .. battery pack, 40 .. terminal block, 43 .. step part, 46 .. cord connection part , 47, 87 ... Plug receptacle, 49 ... Standing piece, 50 ... Power cord, 51 ... Connection plug, 52 ... Bend regulating part, 58 ... Cover, 59 ... Upper plate part, 60 ... Rear Plate part 61 .. Cover rotation shaft 65.. Retaining protrusion 78, Connection part 79, Storage box 85, Fitting protrusion

Claims (5)

A tank,
A detachable main body at the top of the tank;
A cord connectable to the main body;
A disconnection prevention part that is provided on the main body and prevents the connected cord from coming off from the main body,
A dust collector characterized by comprising:   The dust collector according to claim 1, wherein a cover that covers a cord connecting portion to which the cord is connected is provided, and the removal preventing portion is provided on the cover.   The dust collector according to claim 2, wherein the main body is provided with a battery connecting portion to which a battery can be connected, and the cover covers the cord connecting portion and the battery connecting portion at the same time.   The dust collector according to claim 2 or 3, wherein ribs located inside the cover are provided on the left and right sides of the cord in the cord connecting portion. A tank,
A detachable main body at the top of the tank;
A battery connecting portion provided in the main body and connectable to a battery;
A cord connecting portion provided in the main body and connectable with a cord;
A cover that covers the battery connection portion and the cord connection portion;
A dust collector characterized by comprising:

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