JPS6343433Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement in the structure of a timer-equipped blower in which the timer device is operated by a pull string.

Conventionally, there is a device disclosed in Japanese Utility Model Publication No. 42-6843 that relates to a timer device for a blower with a timer. The timer setting device disclosed in the publication has a structure in which setting is performed using a single pull string, and a rotating disk fixed to the tip of the timer shaft of the timer is set by a mechanism consisting of a clutch metal fitting or the like. It is designed to rotate and has a complicated structure. In addition, in order to prevent two strings from tangling, there is a method in which the other string is loosely inserted into a knob fixed to the lower end of one string, as shown in Japanese Utility Model Publication No. 50-7696. It is not disclosed that it improves the operability of the timer device, only to prevent tangling.

This proposal has been developed in view of the above points, and will be explained based on FIGS. 1 to 6, which show an example of a ventilation fan, which is a timer-equipped blower with improved operability.

Reference numeral 1 denotes a ventilation fan frame housing a fan motor, shutter, etc. (not shown), which is fixed to an opening formed in a room wall. A timer device 2 for setting and controlling the fan motor's continuous operation, stop, and time-controlled operation is fixed to the inner surface of the frame 1 via a mounting plate 3.

The timer device 2 includes a timer body 6 comprising a timer drive motor 4 and a drive gear contact portion 5.
a rotary setting plate 8 that protrudes from the contact portion 5 and is press-fitted onto the timer setting operation shaft 7 that protrudes from the other surface of the mounting plate 3; An operating string 9 that rotates in the direction of canceling the timer time setting and setting continuous operation, and the operating string 9
a cap-shaped knob 10 fixed to the tip of the setting plate 8; and an insertion hole formed in the knob 10, which is wound around the outer periphery of the setting plate 8 and rotates the operating shaft 7 in the direction of canceling continuous operation and setting the timer time. The operating string 12 is loosely inserted into the operating string 11, and the knob 14 is connected to the tip of the operating string 12 via a spring body 13 that extends for a certain length. A flange 15 is formed on one side edge of the outer circumference of the rotation setting plate 8, and a groove 16 is formed between the flange 15 and the mounting plate 3, around which the operating strings 9, 12 are wound. Ru. In this embodiment, rotating the operating shaft 7 toward the front in FIG. 1 and to the left in FIG. Cancellation and timer time setting are performed. The knob 14 includes a cylindrical portion 17 that is inserted into the inside of the knob 10, a flange portion 18 that abuts the lower end of the knob 10, and a plate 19 that closes the lower surface of the cylindrical portion 17. The spring body 13 is housed in the cylindrical part 17, and its lower end is connected to the plate body 19.
The other end is locked to the operating string 12 which is pulled into the cylindrical portion 17. Therefore, the spring body 13
expands and contracts only within the cylindrical portion 17.

Next, the operation of the timer device 2 will be explained based on FIGS. 4 to 6. FIG. 4 is a sectional view of the timer device 2 in a stopped state. In this state, the knob 14 is housed in the knob 10 and is integrated with the knob 10, and the spring body 13 is in a compressed state. be. From this state, when operating the timer device 2 to set a certain period of time, hold the flange 18 of the knob 14 and pull it downward. First, the spring body 13 stretches and the knob 14 is moved from the knob 10. When pulled out and further pulled, the operation string 1
At step 2, the rotation setting plate 8 is rotated to the right to set a predetermined time. Thereafter, when the tension is stopped, the state shown in FIG. 5 is reached, and the timer device 2 starts operating. At this time, the timer device 2
If you want to shorten the setting time or cancel the setting, pull down the knob 10 and rotate the rotation setting plate 8 to the left. Next, when setting the timer device 2 to continuous operation from the state shown in FIG. 4, when the knob 10 is pulled down, the knob 14 is also pulled down at the same time, and only the spring body 13 is extended.
Therefore, the rotation setting plate 8 is rotated to the left by the operation string 9, but the operation string 12 is wound around the rotation setting plate 8 by the length that the spring body 13 is extended. , the state shown in FIG. 6 is reached.

As described above, the present invention includes a blower frame housing a fan motor, a timer device fixed to the frame,
A rotation setting plate fixed to the operating shaft of the timer device, an operating string wound around the outer periphery of the setting plate for rotating the operating shaft in the continuous operation setting direction, and fixed to the tip of the operating string. an operating string that is wound around the outer periphery of the setting plate to rotate the operating shaft in the timer time setting direction and is loosely inserted into the knob; and a predetermined length at the tip of the operating string. The knob is connected via an elastic spring body and comes into contact with the knob without the spring body stretching when the timer device is stopped, so that there is no tangling of both operating strings and that both operating strings are integrated. It has great practical effects, such as being easy to operate and having a simple structure.

[Brief explanation of the drawing]

Fig. 1 is a front view of a timer-equipped blower with the internal mechanism omitted, Fig. 2 is a cross-sectional view of Fig. 1, Fig. 3 is an exploded sectional view of the main parts, Fig. 4 is a cross-sectional view of the timer device in a stopped state, FIG. 5 is a sectional view of the timer device in a timer operating state, and FIG. 6 is a sectional view of the timer device in a continuous operating state. DESCRIPTION OF SYMBOLS 1... Frame body, 2... Timer device, 7... Operating shaft, 8... Rotation setting plate, 9... Operating string, 10...
Knob, 12... Operation string, 13... Spring body, 14...
...Pick.

Claims (1)

[Scope of utility model registration request] A blower frame body containing a fan motor, a timer device fixed to the frame body, a rotation setting plate fixed to the operation shaft of the timer device, and a rotary setting plate wound around the outer circumference of the setting plate, an operating string for rotating the shaft in the continuous operation setting direction; a knob fixed to the tip of the operating string; An operating string that is loosely inserted into a knob, and a knob that is connected via a spring body that extends for a certain length at the tip of the operating string, and that the spring body contacts the knob without stretching when the timer device is stopped. A blower with a timer.