JP4844555B2 - Blower - Google Patents

Description

  The present invention relates to an air blower having a configuration in which a lead wire connected to an external wiring is drawn to the outside from a lead hole.

  Most electrical devices such as blowers are provided with lead wires for transmitting power and signals connected to external wiring and terminal blocks on the outer shell of the device and circuit boxes provided on the outer shell. It has a configuration that is pulled out from the drawer hole. In such a configuration, a tension stopper plate is provided on the lead-out line in order to protect the wiring portion from tension due to an external tensile load. The tension stopper plate is inserted into the wiring portion of the lead wire and bound by a binding band. The portion of the tension stopper plate that is exposed from the leader line is attached to the outer shell of the device and in the vicinity of the drawer hole provided in the circuit box provided on the outer shell (as this type of conventional technology) Is disclosed in Patent Document 1).

Japanese Utility Model Publication No. 4-137422

  In the conventional way of protecting against the tension of the leader line, it is necessary not only to insert a tension stopper plate into the leader line in advance and fix it with a binding band, but also to fix the tension stopper plate with screws. The assembly work of this part was quite complicated and the workability was low. In addition, it is necessary not only to take sufficient care not to pinch the internal wiring, but also to have a space for screwing the tension stopper plate, and when the extraction hole becomes a circuit box, the bulk of the circuit box increases. There was also a problem.

  The present invention has been made in order to solve the above-described conventional problems, and is to obtain a blower device that has a productive and low-cost protection measure against the tension of the lead wire.

  In order to achieve the above object, the present invention relates to a lead wire including an element such as a thermal fuse that is electrically connected to an electrical component and drawn out from the lead hole to the outside. Wrap together with the element in a protective device that has a good insulating property, and the protective device adopts a means that the outer diameter is larger than the diameter of the extraction hole and cannot be pulled out with the lead wire bound from the extraction hole To do.

  According to the present invention, the lead wire including an element such as a thermal fuse can be protected from the tension caused by a tensile load from the outside simply by wrapping and binding the lead wire including the element with a protective device inside the lead hole, Easy assembly, high productivity, and low cost protection from leader wire tension.

  In the blower of the present invention, a circuit box is provided on the outer periphery of the device. The circuit box has a detachable box cover. The box cover is provided with a lead-out hole for leading out a lead wire for transmitting power, signals, etc., and a terminal block for connection with external wiring is provided in the box. Installed on the outer surface of the cover. The lead wire is electrically connected to an electrical component such as a fan motor, is routed to the circuit box through the outer shell of the device, and is led to the outside from the lead hole. The circuit box houses elements such as a circuit board, a capacitor, a current fuse and a thermal fuse for overload protection. The leader line including the element is inserted into an electrically insulating tube inside the leader hole, wrapped with the element, and tightly bundled by a binding means such as a cord band. The tube inserted and bundled through the lead wire has an outer diameter sufficiently larger than the hole diameter of the lead hole of the box cover, and cannot be pulled out together with the lead wire bound from the lead hole. As a result, the lead wire including the element such as the thermal fuse can be protected from the tension due to the external tensile load by simply wrapping the lead wire including the element with the binding tool inside the lead hole together with the element. Is easy and productive, and the circuit box is not bulky and can be protected from the tension of the leader line at low cost.

Embodiment 1 FIG.
FIG. 1 is a perspective view of the main part of the blower device of the present embodiment, FIG. 2 is a front view of the main part of the blower device excluding the box cover of the circuit box, and FIG. FIG. 4 is a front view of the main part of the air blower showing the form before the protective equipment is attached, except for the box cover of the circuit box, and FIG. 5 is another form. The front view of the principal part of the air blower which shows this protector, FIG. 6, FIG. 7 is a perspective view which shows the protector of another form, FIG. 8 is the side view which shows the protector of FIG. 9 is an exploded perspective view of the binding means, FIG. 10 is a front view showing the binding means assembled, and FIG. 11 is a front view of the main part of the blower device shown excluding the box cover of the circuit box.

  This embodiment relates to a blower device in which a circuit box 2 is provided in the outer shell 1 of the device as shown in FIG. The circuit box 2 has a detachable box cover 3, and is provided with a lead hole 5 with a protective bush for leading the lead wire 4 for transmitting power, signals and the like to the box cover 3. As shown in FIG. 3, a terminal block 6 for connection to external wiring is attached to the outer surface of the box cover. The lead wire 4 is electrically connected to an electrical component such as a fan motor and is drawn into the circuit box 2 through the outer shell 1 and drawn out from the lead hole 5 to the outside. As shown in FIG. 4, the circuit box 2 houses elements such as a capacitor 8, a current fuse for overload protection, and a thermal fuse 9 in addition to the circuit board 7.

  The lead wire 4 including the element is inserted into the electrically insulating tube 10 as a protective device inside the lead hole 5 inside the lead hole 5, and is wrapped together with the element and tightly bundled by a binding means 11 such as a cord band. (See FIG. 2). The tube 10 inserted and bundled into the lead wire 4 has an outer diameter dimension sufficiently larger than the hole diameter of the lead hole 5 (the diameter of the protective bush) of the box cover 3 and is pulled out together with the lead wire 4 bound from the lead hole 5. It is an impossible configuration. Accordingly, the lead wire 4 and the elements wrapped in the protective device can be collectively collected and protected, and the lead wire 4 including the elements such as the thermal fuse 9 is connected to the element by the tube 10 inside the lead hole 5. By simply wrapping and bundling together, the lead wire 4 can be protected from tension due to external pulling load, easy assembly, good productivity, and low cost protection from the tension of the lead wire 4 it can.

  As protective equipment, as shown in FIG. 5, in addition to the flame-retardant film 12 around which the lead wire 4 including the elements is wound, as shown in FIG. 6, FIG. 7, FIG. You may comprise the two resin-made clamping pieces 14 which can pinch | interpose and latch the line | wire 4. As shown in FIG. In this protector, the lead wire 4 is sandwiched and held, so that the locking position of the hook 15 for locking the holding piece 14 and the latching portion 16 can be adjusted, and the lead wire 4 can be adjusted according to the wire diameter of the lead wire 4. By changing the clamping force, it is possible to avoid scratches such as the covering of the lead wire 4. In addition, as shown in FIG. 7, a lead 17 is provided on one side of the sandwiching piece 14 to provide resistance and a lead 18 corresponding to the wire diameter of the lead 4 is provided. A holding force for the wire 4 can also be secured.

  Further, as shown in FIGS. 9 and 10, two clamping pieces 14 are connected by a self-hinge 13 as shown in FIGS. Alternatively, the binding means 11 may be constituted by two clamping pieces 19 that can be clamped by holding the lead wire 4 as shown in FIG. By adopting the configuration of the two clamping pieces 14 and 19, it is only necessary to clamp the mounting operation, and it becomes easier. In addition, although the example which applied the protector with respect to the drawer hole 5 of the circuit box 2 was given and demonstrated, the protector can also be applied to the drawer hole of the outer shell 1.

It is a perspective view of the principal part of an air blower. (Embodiment 1) It is a front view of the principal part of the air blower shown except a box cover of a circuit box. (Embodiment 1) It is a front view of the principal part of the air blower which attaches and shows the box cover of a circuit box. (Embodiment 1) It is a front view of the principal part of the air blower which shows the form before attachment of a protector except the box cover of a circuit box. (Embodiment 1) It is a front view of the principal part of the air blower which shows the protector of another form. (Embodiment 1) It is a perspective view which shows the protector of another form. (Embodiment 1) It is a perspective view which shows the protector of another form. (Embodiment 1) It is a side view shown in the state where a protector was attached. (Embodiment 1) It is a disassembled perspective view of a binding means. (Embodiment 1) It is a front view which assembles and shows a binding means. (Embodiment 1) It is a front view of the principal part of the air blower shown except a box cover of a circuit box. (Embodiment 1)

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Outer shell, 3 Box cover, 4 Leader line, 5 Leader hole, 9 Thermal fuse, 10 Tube, 11 Tightening means, 12 Film, 13 Self hinge, 14 Clamping piece

Claims (5)

  With respect to a lead wire including an element such as a thermal fuse, which is electrically connected to an electric component and drawn out from the lead hole, the lead wire is electrically protected inside the lead hole and the element is electrically insulated. The blower has a configuration in which the outer diameter of the protective device is larger than the diameter of the extraction hole and cannot be pulled out together with the extraction line bundled from the extraction hole.   2. The air blower according to claim 1, wherein the protector is constituted by a tube through which a lead wire including an element is inserted and a binding means for binding the tube and the lead wire.   2. The blower device according to claim 1, wherein the protector is constituted by a tube through which a lead wire including an element is inserted, and a resin-made binding means for binding the lead wire, and the binding means is a lead wire. An air blower composed of two clamping pieces that can be pinched and locked.   It is an air blower of Claim 1, Comprising: The air blower comprised with the film which winds the leader wire containing an element as a protector.   The blower device according to claim 1, wherein the blower device is configured by two clamping pieces that are connected by self-hinges and that can be locked by holding a leader line.

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