JP7555368B2 - Blower - Google Patents

Description

This disclosure relates to a blower that is installed in a building and transports air.

Many equipment such as air conditioners and ventilation fans are equipped with a terminal block to which a power cord is connected. In general, the terminal block is attached to the outside of the outer box, as in the blower disclosed in Patent Document 1.

JP 2016-98703 A

The space available for the terminal block may be limited depending on the location of the blower and the position of the terminal block. While the installation space for the terminal block is limited, there is a demand to expand the installation space for the terminal block in order to accommodate more sophisticated functionality. For this reason, there is a demand for a blower equipped with a terminal block that can secure many connection terminals in a limited installation space.

The present disclosure has been made in consideration of the above, and aims to provide a blower equipped with a terminal block that can secure many connection terminals in a limited installation space.

In order to solve the above-mentioned problems and achieve the object, the blower according to the present disclosure includes an outer box having an inlet and an outlet, an impeller housed in the outer box and forming an airflow from the inlet to the outlet, an electric motor housed in the outer box and driving the impeller, and a terminal block fixed to the side of the outer box. The terminal block includes a rectangular parallelepiped connection terminal having a plurality of terminal portions that electrically connect an input side electric wire connected to an external power source and an output side electric wire connected to the electric motor, and a terminal fixing block that supports the connection terminal with a gap between it and the side of the outer box. The connection terminal is sandwiched between two grooves formed on two different faces that are not adjacent to each other, thereby providing a narrowed portion. The terminal fixing block has a connection terminal mounting plate provided with a bifurcated connection terminal insertion portion. The connection terminal is fixed to the connection terminal mounting plate by inserting the connection terminal insertion portion into each of the two grooves.

The present disclosure has the effect of providing a blower equipped with a terminal block that can secure many connection terminals in a limited installation space.

FIG. 1 is a perspective view of a blower according to a first embodiment; FIG. 1 is a front view of a blower according to a first embodiment; 1 is a rear view of a blower according to a first embodiment; 1 is a side view of a blower according to a first embodiment; FIG. 1 is a side view of a blower according to a first embodiment with a terminal block cover removed; FIG. 1 is a perspective view of a blower according to a first embodiment with a terminal block cover removed; FIG. 1 is an exploded perspective view of a blower according to a first embodiment with a terminal block cover removed; 1 is an exploded view of a terminal block of a blower according to a first embodiment of the present invention; 1 is a cross-sectional view of a terminal block of a blower according to a first embodiment; Circuit diagram of a blower motor according to the first embodiment FIG. 13 is a perspective view of a terminal block of a blower according to a second embodiment; FIG. 13 is an exploded perspective view of a terminal block of a blower according to a second embodiment of the present invention; 11 is a side view of a terminal block of a blower according to a second embodiment of the present invention; Exploded view of a terminal block of a blower according to a second embodiment 11 is a cross-sectional view of a terminal block of a blower according to a second embodiment of the present invention; 11 is a side view of a terminal block of a blower according to a third embodiment. Schematic diagram of a terminal block of a blower according to embodiment 3.

The blower according to the embodiment is described in detail below with reference to the drawings.

Embodiment 1.
FIG. 1 is a perspective view of a blower according to the first embodiment. FIG. 2 is a front view of the blower according to the first embodiment. FIG. 3 is a rear view of the blower according to the first embodiment. The blower 100 according to the first embodiment has a hollow rectangular parallelepiped outer box 1 forming an outer shell. An air outlet 2 is formed on the front side of the outer box 1, and an intake port 5 is formed on the rear side of the outer box 1. The air outlet 2 is formed in two stages, and air is blown out from each stage. In FIG. 1, the air blown out from the air outlet 2 is indicated by an arrow A. The outer box 1 has mounting plates 3 on both ends. The outer box 1 is installed in a state of being suspended from the ceiling 80 or the like by fixing the mounting plate 3 to the ceiling 80 or the like.

The mounting plate 3 fixed to the ceiling 80 supports both ends of the outer box 1 so that it can rotate freely. Therefore, the orientation of the outer box 1 can be changed around the central axis in the longitudinal direction of the outer box 1, as shown by arrow B in Figure 1.

The blower 100 may be installed on a wall or floor instead of on the ceiling 80.

The blower 100 includes an impeller 6 that is installed inside the outer box 1 and forms an airflow toward the air outlet 2, and an electric motor 7 that drives the impeller 6.

Figure 4 is a side view of the blower according to the first embodiment. Figure 5 is a side view of the blower according to the first embodiment with the cover of the terminal block removed. The mounting plate 3 has a through hole 3d formed in the main body 3a. By passing a support bolt 8 through the through hole 3d and screwing the support bolt 8 to the outer box 1, the outer box 1 is supported by the mounting plate 3 so that it can rotate around a horizontal axis. The main body 3a has a plurality of angle adjustment holes 3b formed on an arc at a pitch of 11.25°. By fastening an angle adjustment bolt 9 to any of the angle adjustment holes 3b, the outer box 1 can be installed with the orientation of the air outlet 2 changed at a pitch of 11.25°.

The blower 100 includes a terminal block 16 fixed to the side surface 1a of the outer box 1. FIG. 6 is a perspective view of the blower terminal block according to the first embodiment with the cover removed. FIG. 7 is an exploded perspective view of the blower terminal block according to the first embodiment with the cover removed. FIG. 8 is an exploded view of the terminal block of the blower according to the first embodiment. FIG. 9 is a cross-sectional view of the terminal block of the blower according to the first embodiment. The terminal block 16 includes a quick-connect terminal 15, an insulating sheet 17, a terminal fixing block 19, a fixing part 18, and a screw 13. As shown in FIG. 4, the terminal block 16 includes a cover 4 that covers the quick-connect terminal 15. Note that the cover 4, the fixing part 18, and the screw 13 are omitted in FIG. 8 and FIG. 9. As shown in FIG. 4, the cover 4 has a through hole 4a for screwing to the side surface 1a of the outer box 1. As shown in FIG. 5, the quick-connect terminal 15 is a connection terminal that electrically connects the input wire 21 connected to the external power source and the output wire 14 connected to the motor 7.

The quick-connect terminal 15 has a structure in which four terminal sections 51 that connect the input side wire 21 connected to the external power source and the output side wire 14 connected to the motor 7 are arranged in parallel. The input side wire 21 and the output side wire 14 are inserted into the connection port of the terminal section 51 from two opposite directions. Here, the direction in which the input side wire 21 and the output side wire 14 are inserted into and removed from the connection port of the terminal section 51 is defined as the Y direction. The input side wire 21 is inserted into the connection port of the terminal section 51 from the -Y direction. The output side wire 14 is inserted into the connection port of the terminal section 51 from the +Y direction. The direction in which the input side wire 21 and the output side wire 14 are inserted into the connection port of the terminal section 51 is parallel to the side surface 1a of the outer box 1. The direction in which the four terminal sections 51 are arranged is defined as the X direction. The direction perpendicular to both the X direction and the Y direction is defined as the Z direction. To each terminal portion 51, the input wire 21 connected to an external power source is connected from the -Y direction. Also, the output wire 14 connected to the electric motor 7 is connected from the +Y direction. Each connection port on the input side and output side is a quick-connect port to which the input wire 21 and the output wire 14 can be attached without using a tool such as a screwdriver. The end face on the -Z direction of the quick-connect terminal 15 faces the side surface 1a of the outer box 1 when the terminal block 16 is attached to the side surface 1a of the outer box 1.

The quick-connect terminal 15 has a rectangular parallelepiped exterior, and at the -Z end, two grooves 31a are formed that are recessed in the same shape over the entire length in the X direction and connect the -X end face to the +X end face. That is, the quick-connect terminal 15 has one groove 31a formed on each of two different faces that are not adjacent to each other. The part between the grooves 31a forms a constricted portion 31. When the terminal block 16 is attached to the side surface 1a of the outer box 1, the two grooves 31a extend parallel to the side surface 1a of the outer box 1. Therefore, the quick-connect terminal 15 is constricted at the constricted portion 31, and the width in the Y direction of the part at the constricted portion 31 is smaller than the width in the Y direction of the part other than the constricted portion 31.

The Y-direction width of the quick-connect terminal 15 at the portion in the -Z direction from the constricted portion 31 is smaller than the width at the portion in the +Z direction from the constricted portion 31. The Y-direction width of the quick-connect terminal 15 at the portion in the +Z direction from the constricted portion 31 is smaller than the Y-direction width at the portion in the +Z direction from the constricted portion 31.

The quick-connect terminal 15 is equipped with a release button 15a that is operated by pressing it in the same direction as the insertion direction of the input wire 21 or the output wire 14 when disconnecting the input wire 21 and the output wire 14.

The input wire 21 is a vinyl insulated vinyl sheathed flat cable known as a VVF (Vinyl insulated vinyl sheathed Flat-type cable). A VVF cable has a core made of a single copper wire with a diameter of 1.6 mm to 2.0 mm. The output wire 14 generally has a twisted core, and a pin terminal is used for the connection. The twisted wire and the pin terminal are connected by crimping the pin terminal to the twisted wire.

As described above, since the types and diameters of the wires used on the input and output sides of the quick-connect terminal 15 are different, the quick-connect port into which the input wire 21 or the output wire 14 is inserted also has a different shape and inner diameter corresponding to the input wire 21 or the output wire 14.

The terminal fixing base 19 has a rectangular connection terminal mounting plate 33 extending in the XY direction, two leg side portions 34 extending in the -Z direction from both ends of the connection terminal mounting plate 33 in the Y direction, and leg bottom portions 35 extending away from each other along the Y direction from the -Z ends of each leg side portion 34.

The connection terminal mounting plate 33 is cut in the center in the Y direction to form a bifurcated connection terminal insertion section 32. The cutout that forms the connection terminal insertion section 32 is cut from the end of the connection terminal mounting plate 33 in the -X direction. The cutout that forms the connection terminal insertion section 32 is rectangular with sides extending in the X and Y directions. The width in the Y direction of the cutout that forms the connection terminal insertion section 32 is the same as the width in the Y direction of the narrowed section 31 of the quick-connect terminal 15. A screw hole 34a is formed in the leg side surface section 34. In addition, a through hole 19a for screwing to the side surface 1a of the outer box 1 is formed in the leg bottom surface section 35. When the terminal block 16 is attached to the side surface 1a of the outer box 1, the connection terminal mounting plate 33 is installed parallel to the side surface 1a of the outer box 1.

The insulating sheet 17 is rectangular and extends in the XY direction, and is approximately the same size as the connection terminal mounting plate 33 of the terminal fixing stand 19. A rectangular hole is provided in the center of the insulating sheet 17 to form the connection terminal insertion section 41. The hole that forms the connection terminal insertion section 41 is rectangular with sides extending in the X and Y directions. The width in the X direction of the connection terminal insertion section 41 is the same as the width in the X direction of the quick-connect terminal 15. The width in the Y direction of the connection terminal insertion section 41 is greater than the width in the Y direction of the quick-connect terminal 15 at the portion in the -Z direction of the constriction 31, and is smaller than the width in the Y direction of the quick-connect terminal 15 at the portion in the +Z direction of the constriction 31. The end of the insulating sheet 17 in the -X direction is bent in the +Z direction to form a bent piece 42.

The fixed part 18 has opposing parts 18a that face each other and a connecting part 18b that connects the opposing parts 18a. A through hole 18c is formed in the opposing parts 18a.

The cover 4 and the terminal fixing base 19 can be fixed to the side surface 1a of the outer box 1 by working from the same direction.

Figure 10 is a circuit diagram of the motor of the blower according to the first embodiment. The motor 7 is a capacitor-type induction motor. The motor 7 is configured by connecting a main winding 91 and an auxiliary winding 92 in parallel to an AC power source, and connecting a phase-advancing capacitor 93 in series to the main winding 91. The auxiliary winding 92 is wound in series with a first variable speed winding 94 and a second variable speed winding 95. The circuit of the motor 7 connects one side of the AC power source to a common part 96 of the main winding 91 and the auxiliary winding 92, and switches the connection position of the other side between a position 97 including only the auxiliary winding 92, a position 98 including the auxiliary winding 92 and the first variable speed winding 94, and a position 99 including the auxiliary winding 92, the first variable speed winding 94, and the second variable speed winding 95, so that the motor 7 performs three-stage speed adjustment. Therefore, four output wires 14 are connected between the AC power source and the motor 7.

In this way, in order to achieve multi-stage airflow control of the blower 100, it is necessary to increase the number of stages for adjusting the rotation speed of the motor 7, and therefore to expand the installation space for the quick-connect terminal 15.

The method of assembling the terminal block 16 will now be described. First, the connection terminal insertion portion 41 of the insulating sheet 17 is inserted from the +Z direction into the constricted portion 31 of the quick-connect terminal 15. Since the Y-direction width of the portion of the quick-connect terminal 15 that is in the +Z direction from the constricted portion 31 is greater than the Y-direction width of the connection terminal insertion portion 41, the portion of the quick-connect terminal 15 that is in the +Z direction from the constricted portion 31 abuts against the insulating sheet 17.

Next, the connection terminal insertion portion 32 of the terminal fixing base 19 is inserted from the +X direction into each of the two grooves 31a that form the constricted portion 31 of the quick-connect terminal 15. As a result, as shown in FIG. 9, the insulating sheet 17 and the connection terminal mounting plate 33 of the terminal fixing base 19 are inserted into the constricted portion 31 of the quick-connect terminal 15, and the insulating sheet 17 and the connection terminal mounting plate 33 are sandwiched between the part of the quick-connect terminal 15 that is in the +Z direction from the constricted portion 31 and the part of the quick-connect terminal 15 that is in the -Z direction from the constricted portion 31, suppressing movement in the Z direction.

Finally, the fastening part 18 sandwiches the folded piece 42 of the insulating sheet 17 and the quick-connect terminal 15 from the -X direction and fastens them to the leg side portion 34 of the terminal fixing base 19. This prevents the quick-connect terminal 15 from moving in the X direction and prevents the quick-connect terminal 15 from slipping out of the connection terminal insertion portion 32.

The bottom surface of the quick-connect terminal 15 and the terminal fixing base 19 are insulated by the insulating sheet 17. The insulating sheet 17 is approximately the same size as the connection terminal mounting plate 33 of the terminal fixing base 19, so the input/output wires connected to the quick-connect terminal 15 and the terminal fixing base 19 are similarly insulated by the insulating sheet 17.

The side of the quick-connect terminal 15 and the fixed part 18 are insulated by the folded piece 42 of the insulating sheet 17.

In this way, by inserting the connection terminal insertion portion 32 into each of the two grooves 31a forming the constricted portion 31 and fixing the quick-connect terminal 15 to the terminal fixing base 19, it is no longer necessary to secure space for screws to fasten the quick-connect terminal 15 to the terminal fixing base 19, which is a part fixed to the side surface 1a of the outer box 1, and the installation space on the XY plane of the terminal base 16 can be reduced. Therefore, the terminal base 16 provided in the blower 100 according to the first embodiment can fix many connection terminals in a limited installation space. Furthermore, by fastening the screw through the through hole 18c of the fixing part 18 to the screw hole 34a of the leg side surface portion 34 of the terminal fixing base 19, the quick-connect terminal 15 can be prevented from slipping out of the notch of the terminal fixing base 19.

In addition, the quick-connect terminal 15 is installed with a gap formed between it and the side surface 1a of the outer box 1, so that an insulation distance with the outer box 1 can be secured, and the input side electric wire 21 and the output side electric wire 14 can be easily inserted.

Embodiment 2.
FIG. 11 is a perspective view of the terminal block of the blower according to the second embodiment. FIG. 12 is an exploded perspective view of the terminal block of the blower according to the second embodiment. FIG. 13 is a side view of the terminal block of the blower according to the second embodiment. FIG. 14 is an exploded view of the terminal block of the blower according to the second embodiment. FIG. 15 is a cross-sectional view of the terminal block of the blower according to the second embodiment. The terminal block 16 according to the second embodiment includes a fixed part 22 instead of the fixed part 18. The fixed part 22 has a rectangular connecting plate 61 extending in the XY direction, a leg part 62 extending in the -Z direction from the side surface of the connecting plate 61 in the +Y direction, and a claw part 63 protruding in the +Z direction from a position in the -Y direction from the center of the connecting plate 61 in the Y direction. The claw part 63 is formed rotationally asymmetric around the Z axis. A through hole 62a is formed in the leg part 62. In addition, a cutout part 52 that can be engaged with the claw part 63 is formed on the end surface in the -Z direction of the quick-connect terminal 15. The cutout portion 52 is formed at a position closer to the end portion in the -Y direction than the center in the Y direction of the -Z side end face. The cutout portion 52 is formed rotationally asymmetric about the Z axis. The insulating sheet 17 has a tongue portion 17a extending in the -Z direction from the end portion in the Y direction. A through hole 17b is formed in the tongue portion 17a.

The notch portion 52 is provided rotationally asymmetrically around the Z axis, so that when the quick-connect terminal 15 is rotated 180° around the Z axis, the notch portion 52 is positioned in a different position than before the rotation.

The terminal fixing base 19 is similar to the terminal base 16 according to embodiment 1, except that the screw hole 34a is formed only in the leg side portion 34 on the +Y direction side.

The terminal block 16 according to the second embodiment has a structure in which the fastening part 22 is attached to the fastening terminal 15 in which the connection terminal insertion part 32 of the terminal fixing block 19 is inserted into the constricted part 31, thereby suppressing the movement of the fastening terminal 15 in the Z direction.

The method of assembling the terminal block 16 according to the second embodiment will be described. The method of inserting the insulating sheet 17 and the terminal fixing block 19 into the narrowed portion 31 of the quick-connect terminal 15 is the same as in the first embodiment.

Next, with the claw portion 63 of the fixing part 22 inserted into the notch portion 52 of the quick-connect terminal 15, a screw 13 is passed through the through hole 62a formed in the leg portion 62 of the fixing part 22 and the through hole 17b formed in the tongue portion 17a of the insulating sheet 17, and the screw 13 is fastened to the screw hole 34a formed in the leg side portion 34 of the terminal fixing base 19. This prevents the fixing part 22 from coming off the quick-connect terminal 15.

In this way, by fixing the quick-connect terminal 15 to the terminal fixing base 19 using the narrowed portion 31 on the quick-connect terminal 15 and the connection terminal insertion portion 32 on the connection terminal mounting plate 33 of the terminal fixing base 19, there is no need to secure space for screws to fasten the quick-connect terminal 15 to the terminal fixing base 19, which is a part fixed to the side surface 1a of the outer box 1, so the installation space on the XY plane of the terminal base 16 can be reduced.

In addition, by fastening a screw 13 through the through hole 62a of the leg 62 of the fixing part 22 and into the screw hole 34a of the leg side part 34 on the +Y direction side of the terminal fixing base 19, the claw part 63 of the fixing part 22 is pulled in the +Y direction, and the quick-connect terminal 15 is fixed to the terminal fixing base 19 in a state of being pulled in the +Y direction. Therefore, the terminal base 16 according to the second embodiment can fix the quick-connect terminal 15 to the terminal fixing base 19 with a single screw 13.

The quick-connect terminal 15 also has a notch 52 formed on the end face in the -Z direction at a position in the -Y direction away from the center in the Y direction. Because the notch 52 is formed in an asymmetrical position with respect to the center in the Y direction, even if one attempts to assemble the terminal block 16 by mistake rotating the quick-connect terminal 15 180 degrees around the Z axis, the claw 63 of the fixing part 22 cannot be inserted into the notch 52 of the quick-connect terminal 15, and the terminal block 16 cannot be assembled.

The input wire 21 connected to the input side of the quick-connect terminal 15 and the output wire 14 connected to the output side have different shapes and sizes of connection parts, so if the input wire 21 and the output wire 14 are incorrectly attached, there is a possibility that a connection will be poor due to the difference in pull-out load, and there is a risk that a current leak will occur or the motor 7 will stop working. The terminal block 16 in the second embodiment can prevent the quick-connect terminal 15 and the terminal fixing block 19 from being assembled by mistakenly rotating them 180° around the Z axis, so that even if the quick-connect terminal 15 has a different shape and wire diameter at the input side quick-connect connection port and the output side connection port, it is possible to prevent incorrect wiring due to incorrect assembly.

Embodiment 3.
Fig. 16 is a side view of the terminal block of the blower according to the third embodiment. Fig. 17 is a schematic diagram of the terminal block of the blower according to the third embodiment. The terminal block 16 of the blower according to the third embodiment includes a quick-connect terminal 15, an insulating sheet 17, a terminal fixing block 19, and a fixing part 22. The terminal block 16 according to the third embodiment has a different shape of the fixing part 22 compared to the terminal block 16 according to the second embodiment. The fixing part 22 of the terminal block 16 according to the third embodiment has a longer leg 62 than the fixing part 22 of the terminal block 16 according to the second embodiment, and the gap G2 between the leg 62 of the fixing part 22 of the terminal block 16 according to the second embodiment and the side surface 1a of the outer box 1 is narrower than the gap G1 between the leg 62 of the fixing part 22 of the terminal block 16 according to the second embodiment and the side surface 1a of the outer box 1.

As shown in FIG. 17, the -Z direction end of the leg 62 of the fixing part 22 contacts the upper surface of the leg bottom part 35 of the terminal fixing base 19 when the terminal block 16 is assembled. In other words, the gap G2 between the side surface 1a of the outer box 1 and the lower end of the fixing part 22 in the -Z direction is approximately the same as the thickness of the leg bottom part 35 of the terminal fixing base 19, as shown in FIG. 16.

The output side electric wire 14 is pulled out from the outer box 1 through an opening formed in the side surface 1a of the outer box 1 and connected to the output side connection port on the -Y side of the quick-connect terminal 15.

If the terminal fixing base 19 is attached to the side surface 1a of the outer box 1 by mistake by rotating it 180° around the Z axis, the gap G2 between the side surface 1a of the outer box 1 and the lower end of the fixing part 22 in the -Z direction will be approximately the same as the thickness of the leg bottom surface portion 35 of the terminal fixing base 19, as shown in FIG. 16. The wire diameter D of the output side electric wire 14 is larger than the thickness of the leg bottom surface portion 35. Therefore, the output side electric wire 14 cannot be passed through the gap G2 between the side surface 1a of the outer box 1 and the lower end of the fixing part 22 in the -Z direction. In other words, even if the terminal fixing base 19 is attached to the side surface 1a of the outer box 1 by mistake by rotating it 180° around the Z axis, the output side electric wire 14 cannot be connected to the connection port on the -Y direction side of the quick-connect terminal 15. Therefore, the terminal base 16 according to the third embodiment can prevent erroneous connection of the output side electric wire 14.

The configurations shown in the above embodiments are merely examples of the contents, and may be combined with other known technologies, and parts of the configurations may be omitted or modified without departing from the spirit of the invention.

Various aspects of this disclosure are summarized below as appendices.

(Appendix 1)
An outer box having an intake port and an exhaust port formed therein;
an impeller housed in the outer box and forming an airflow from the suction port to the air outlet;
an electric motor housed in the outer case and driving the impeller;
A terminal block fixed to a side surface of the outer box,
The terminal block includes:
a rectangular parallelepiped connection terminal having a plurality of terminal portions for electrically connecting an input side electric wire connected to an external power source and an output side electric wire connected to the electric motor;
a terminal fixing base that supports the connection terminal with a gap between the connection terminal and a side surface of the outer box,
The connection terminal has a constricted portion that is sandwiched between two grooves formed on two different faces that are not adjacent to each other,
the terminal fixing base has a connection terminal mounting plate provided with a bifurcated connection terminal insertion portion,
The connection terminal is fixed to the connection terminal mounting plate by inserting the connection terminal insertion portion into each of the two grooves.
(Appendix 2)
The blower described in appendix 1, characterized in that the connection terminal is a quick-connect terminal that grips and electrically connects the input side wire and the output side wire inserted into the connection port of the terminal portion.
(Appendix 3)
The blower described in Appendix 2, characterized in that the quick-connect terminal is provided with a release button that releases the clamping of the input side wire by being pressed in the same direction as the insertion direction of the input side wire, and a release button that releases the clamping of the output side wire by being pressed in the same direction as the insertion direction of the output side wire.
(Appendix 4)
The two grooves extend parallel to the side surface of the outer box,
The connection terminal mounting plate is disposed parallel to a side surface of the outer box,
4. The blower according to claim 1, wherein the terminal fixing base suppresses movement of the connection terminal in a direction perpendicular to a side surface of the outer box.
(Appendix 5)
A fixing metal fitting is provided to be fixed to the terminal fixing block,
The fixing metal fitting has claws formed rotationally asymmetrically around an axis perpendicular to a side surface of the outer box,
The blower described in appendix 4, wherein the connection terminal has a notch portion that can engage with the claw portion and is formed rotationally asymmetrically around an axis perpendicular to the side surface of the outer box.
(Appendix 6)
The blower according to claim 5, wherein a gap between a side surface of the outer box and the fixing metal fitting is smaller than a wire diameter of the output side electric wire.
(Appendix 7)
7. The blower according to claim 1, further comprising a mounting plate that supports the outer box so as to be rotatable about a horizontal axis.

1 outer box, 1a side, 2 air outlet, 3 mounting plate, 3a main body, 3b angle adjustment hole, 3d, 4a, 17b, 18c, 19a, 62a through hole, 4 cover, 5 suction port, 6 impeller, 7 motor, 8 support bolt, 9 angle adjustment bolt, 13 screw, 14 output side electric wire, 15 quick-connect terminal, 15a release button, 16 terminal block, 17 insulating sheet, 17a tongue portion, 18, 22 fixing part, 18a facing portion, 18b connecting portion, 19 terminal fixing block, 21 input side electric wire, 31 constriction portion, 31a groove, 32, 41 connection terminal insertion portion, 33 connection terminal mounting plate, 34 leg side portion, 34a screw hole, 35 leg bottom portion, 42 bent piece, 51 terminal portion, 52 Notch, 61 connecting plate, 62 leg, 63 claw, 80 ceiling, 91 main winding, 92 auxiliary winding, 93 phase-advancing capacitor, 94 first variable speed winding, 95 second variable speed winding, 96 common part, 97, 98, 99 position, 100 blower.

Claims (7)

An outer box having an intake port and an exhaust port formed therein;
an impeller housed in the outer box and forming an airflow from the suction port to the air outlet;
an electric motor housed in the outer case and driving the impeller;
A terminal block fixed to a side surface of the outer box,
The terminal block includes:
a rectangular parallelepiped connection terminal having a plurality of terminal portions for electrically connecting an input side electric wire connected to an external power source and an output side electric wire connected to the electric motor;
a terminal fixing base that supports the connection terminal with a gap between the connection terminal and a side surface of the outer box,
The connection terminal has a constricted portion that is sandwiched between two grooves formed on two different faces that are not adjacent to each other,
the terminal fixing base has a connection terminal mounting plate provided with a bifurcated connection terminal insertion portion,
The connection terminal is fixed to the connection terminal mounting plate by inserting the connection terminal insertion portion into each of the two grooves. The blower according to claim 1, characterized in that the connection terminal is a quick-connect terminal that grips and electrically connects the input side wire and the output side wire inserted into the connection port of the terminal part. The blower according to claim 2, characterized in that the quick-connect terminal is provided with a release button that releases the clamping of the input side electric wire by being pressed in the same direction as the insertion direction of the input side electric wire, and a release button that releases the clamping of the output side electric wire by being pressed in the same direction as the insertion direction of the output side electric wire. The two grooves extend parallel to the side surface of the outer box,
The connection terminal mounting plate is disposed parallel to a side surface of the outer box,
The blower according to claim 1 , wherein the terminal fixing base restricts movement of the connection terminal in a direction perpendicular to a side surface of the outer box. A fixing metal fitting is provided to be fixed to the terminal fixing block,
The fixing metal fitting has claws formed rotationally asymmetrically around an axis perpendicular to a side surface of the outer box,
5. The blower according to claim 4, wherein the connection terminal has a notch engageable with the claw portion formed rotationally asymmetrically about an axis perpendicular to a side surface of the outer box. The blower according to claim 5, characterized in that the gap between the side of the outer box and the fixing bracket is smaller than the wire diameter of the output side electric wire. The blower according to any one of claims 1 to 6, characterized in that it is provided with a mounting plate that supports the outer box so that it can rotate around a horizontal axis.

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