JPS6120980B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timer equipped with a quick mechanism used for rapidly rotating a timer cam intermittently and rapidly opening and closing contacts that follow the cam. When setting a time limit, the rotation of the timer cam becomes very heavy due to the pressing force of the quick lever in the quick mechanism, but the present application is designed to prevent the rotation from becoming heavy, that is, to enable it to rotate lightly. The present invention attempts to provide a timer equipped with a mechanism.

1 to 4 showing embodiments of the present application will be described below. 1 is a timer case, which is usually made of plastic material. Reference numeral 2 denotes a fastener integrally formed with the case 1, which is used to attach the timer to any device requiring a timer, such as an electric washing machine or a microwave oven, using screws or the like. Note that 3 shown in FIG. 2 indicates a part of the panel of the above device. Reference numeral 4 denotes a main shaft rotatably attached to the case 1, which is connected to a drive device (not shown) such as a timer motor or a mainspring, as is well known, for fixed rotation. Furthermore, in the main shaft 4, one end protruding from the panel 3 has a knob 5 for manual operation.
is fixed. Reference numeral 6 denotes a time cam for opening and closing contacts, which is connected to the main shaft 4 in the case 1 with a slight play in the direction of rotation, as is well known.
The outer periphery is formed with irregularities corresponding to the length of the time period to be set. Incidentally, a plurality of cams 6 are provided in a multilayered manner as required. Reference numeral 7 denotes a plurality of contact plates connected to any electrical circuit, which follow the unevenness of the timer cam 6, and the rotation of the cam 6 causes contact plates 7'
is operated to open and close. 8 is the main shaft 4
As is well known, the cam 6 and the main shaft 4 are connected to each other by an engagement pin fixed to the cam 6. The above configuration is an example of a well-known timer, and other known timer structures may be used.

Next, in the quick mechanism 10, reference numeral 11 is a well-known quick cam attached to rotate integrally with the timer cam 6. On the outer periphery, there is a lifting slope 11' for lifting a quick lever, which will be described later, and an elastic Sliding slopes 11'' are provided alternately to cause the cam itself to rapidly rotate in response to pressure. Reference numeral 12 indicates a shaft hole drilled in the case 1 near the outer periphery of the quick cam 11, as shown in FIG. The interlocking shaft is rotatably attached to the shaft 1' and is made of metal or other hard material, and is composed of the shaft 13 of the quick lever and the shaft 30 of the interlocking gear described later. Reference numeral 14 denotes a quick lever whose base part is rotatably attached to the shaft 13, and is made of hard plastic or other hard material, and as is well known, the quick lever is made of a hard plastic material or other hard material. The tip 14' (contacting part) of the quick lever 14 is brought into contact with the outer periphery of the quick cam 6. 15 is the pivoting part 1 of the quick lever 14.
With a biasing spring wrapped around 4", the Quick Clever 1
The tip 14' of 4 is provided so as to press the quick cam 11. Also, one end 15' of this is fixed to the quick lever 14, and the other end 15'' is hooked to an interlocking pin 16 set on the shaft 12. Note that 17 pivotally supports the shaft head of the shaft 13. A fan-shaped retaining plate made of a hard plate such as an iron plate.
Moreover, the fan-shaped tip is a receiving part 20 provided in the case 1.
The case 1 is fitted into the support column 18, and is further fixed with a set screw 19 to a support column 18 formed integrally with the case 1.
Next, on the outside of the case 1, 22 is a lever shaft formed integrally with the case 1, 23 is an operating lever illustrated as an operating member, and a pivot portion 23 is rotatably attached to the lever shaft 22. ', an operating part 24 formed in a hook shape and projecting from the panel 3, and a fan-shaped gear part 25 having gear teeth at the tip. Reference numeral 26 denotes a return spring that is wound around the pivot portion 23' of the operating lever 23, and as shown in FIG. The end 26'' is hooked to the periphery of a through hole 28 formed in the operation lever 23, and biased to hold the lever 23 in the normal position. The side part of the gear part 25 is always urged to be in contact with 35 of the par parts 34 and 35. Reference numeral 31 is an interlocking gear, which is fixed to the shaft 30 so as to be able to rotate integrally with it, and which is is meshed with the gear portion 25 of the operating lever 23.The shaft 30 and the interlocking gear 31 are fixed by using an insertion hole formed corresponding to the shape of the outer periphery of the shaft 30, which has a notch formed in a part of the outer periphery. An interlocking gear 31 having
In addition to this, the two may be fixed by any method such as using a press-fitting means. Reference numeral 32 denotes a retaining plate fixed to the columns 27 and 29 with set screws 33, and is attached to the lever shaft 22.
The shaft head of the shaft 30 is held, and the shaft head of the shaft 30 is pivotally supported.

The operation of the timer with the above configuration will be explained. First, the timer cam 6 is rotated by rotating the knob 5 to set the programmed timer. In this case, prior to rotating the knob 5, the operating portion 24 of the operating lever 23 is tilted in the direction of the arrow 36 in FIG. Then, the gear part 25 of the operating lever 23 rotates about the lever shaft 22, and the interlocking gear 3 connected to the gear part 25 rotates.
1 rotates in the direction of arrow 37. Along with this, the interlocking shaft 12 also rotates in the same direction, and the interlocking pin 16 fixed to the interlocking shaft 12 as shown in FIG. 4 rotates by an angle corresponding to the tilt angle of the lever 23, as shown by the solid line. Moving. As a result, one end is connected to the interlocking pin 16
The biasing force of the biasing spring 15 hooked on the quick lever 1 against the quick cam 11 is weakened.
The pressing force of 4 decreases. This reduces the rotational resistance of the cam 11 due to the pressing force of the quick lever 14. As a result, when operating the knob 5 to set the time limit, the operation is light and the knob 5 can be rotated quickly and easily. After that, when the operating force on the operating lever 23 is removed (when the hand is removed), the operating lever 23 is returned to its normal position by the return spring 26, and the urging force of the urging spring 15 is also restored, so that the quick lever 14 is Press the quick cam 11 firmly. The moving angle θ ₂ of the pin 16 with respect to the tilt angle θ ₁ of the lever 23 shown in FIG. 4, that is, the amount of decrease in the biasing force of the biasing spring 15 is arbitrarily designed according to the biasing force. In this case, the gear part 25
This can be obtained by arbitrarily changing the gear ratio of the interlocking gear 31 and the interlocking gear 31. Alternatively, the operating lever and the interlocking shaft may be integrated so that the operating force of the operating lever 23 is directly applied to the interlocking shaft 12. In this case, the operating lever is configured to tilt in the opposite direction to that described above, and the tilting angle and the movement angle of the interlocking pin necessarily match.

Next, after the time limit has been set as described above, when the drive device is started, the timer operates for a time limit.
In this case, the driving force from the drive device is transmitted to the main shaft 4 to rotate it. Further, the timer cam 6 and the quick cam 11 connected to the main shaft 4 also rotate together in the same direction, and the tip 14' of the quick lever 14
is the lifting slope 11' on the outer periphery of the quick cam 11.
and the sliding slope 11'' alternately. When facing the sliding slope 11'', the quick cam 11
is the main shaft 4 due to the pressing force of the quick lever 14.
The rotation of the main shaft 4 is preceded by the amount of play between the main shaft 4 and the main shaft 4, causing rapid rotation. At the same time, the timer cam 6 suddenly moves together, and the contacts 7'' of the driven contact plate 7 instantly open and close.This rapid opening and closing operation allows the timer to operate accurately, and also prevents the contacts from becoming rough. can be prevented.

Although the above-mentioned timer is an example of a timer that rotates in one direction, the timer may be a timer equipped with a known quick mechanism that rotates in forward and reverse directions.

Next, FIGS. 5 to 7 show different embodiments of the present application.
The diagram will be explained. These figures show an example in which a single operation of the operating lever 23e facilitates the rotational operation when setting the time limit, and at the same time opens and closes the main switch 43. In the figure,
Reference numeral 40 denotes an auxiliary camshaft rotatably attached to the case 1e, and as shown in FIG. 6, the thin shaft portion 40', which is configured as a lever shaft in itself, is connected to the pivot portion 23'e of the operating lever 23e. It is fixed by press-fitting and rotates integrally with the operating lever 23e. Also, one end 4 of this shaft 40
0'' is a pivot portion 4 extending from the retaining plate 17e.
1, and the other end 40 is pivoted to a retaining plate 32e. Reference numeral 42 indicates an auxiliary cam integrally formed with the auxiliary camshaft 40. The main switch 43, which is driven by the cam 42, consists of contact plates 45', 45' whose base portions are fixed to a base 44 attached to the case 1e. Shang master switch 43
is normally configured as a device to which the timer is attached or as a power switch for the timer itself. When setting the timer, when the operating lever 23e is tilted as shown in FIG. 7, the biasing force of the biasing spring 15e is reduced. At the same time, the rotational resistance at the time of setting is reduced, and at the same time, the auxiliary cam 42 is also interlocked to open the main switch 43 and turn off the power. In this case, the main switch 43 may be configured to close. It should be noted that parts that are functionally the same or equivalent to those in the previous figure are given the same reference numerals as those in the previous figure with an alphanumeric letter "e", and redundant explanations are omitted.

Next, FIG. 8 shows a different example of the operation member, which is configured to rotate the auxiliary camshaft 40f similarly to the auxiliary camshaft 40 shown in FIG. The member 23f includes an operating shaft 46 integrally connected to the auxiliary camshaft 40f,
It is composed of an auxiliary knob 47 configured as an operating section fixed to one end of the shaft 46, and a gear section 25f further integrally formed. In this case, by rotating the auxiliary knob 47, the auxiliary camshaft 4
0f rotates, and the interlocking gear 31f meshing with the gear portion 25f also rotates. In addition, for parts that are considered to be functionally the same or equivalent to those in FIG. 6, the same numerals as in FIG. 6 are appended with an alphanumeric symbol f, and redundant explanations are omitted.

As described above, in the present invention, when the main shaft 4 is rotated by the drive device and the timer cam 6 connected thereto opens and closes the contact 7', the quick lever 14 is brought into contact with the sliding slope 11'' of the quick cam 11. Sometimes, the quick lever 14, which is pressed against the quick cam 11 by the biasing force of the biasing spring 15, can cause the quick cam 11 to suddenly rotate, thereby causing the timer cam 6 to suddenly rotate.
This has the effect of making it possible to open and close quickly and prevent roughness.

Furthermore, even if the quick lever 14 presses the quick cam 11 as described above, when manually rotating the main shaft 4 to set the time limit, the operating member 23 must be operated to push the other end of the biasing spring 15. By rotating the interlocking pin 16 on which the spring 15" is engaged, the spring force of the biasing spring 15 is loosened, and the biasing spring 1
The biasing force exerted on the quick lever 14 from one end 15' of the quick lever 5 can be weakened, and the pressing force of the quick lever 14 against the quick cam 11 can be weakened.
This has the effect of making it easier to manually rotate the main shaft 4.

Furthermore, in the above case, since the other end 15'' of the biasing spring 15 is moved by operating the operating member 23, the biasing force from the one end 15' of the biasing spring 15 to the quick lever 14 is kept weakly applied. This has the advantage that the manual rotation of the spindle 4 can be easily recognized by the feel of the hand operating the spindle 4. It has the advantage of being able to accurately stop the timer cam 6 at the end of the operation.This has the effect of allowing the timer cam 6 to actuate the contacts at an accurate time when the drive device is activated next time. There is.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application, in which Fig. 1 is a partially cutaway plan view showing the main parts, Fig. 2 is a cross-sectional view taken along the line -- in Fig. 1, and Fig. 3 is a partially cutaway bottom view showing the main parts. Figure 4 is an explanatory diagram showing the operating state, Figure 5 is an explanatory diagram showing the operating state,
Figures 6 and 7 show different examples from Figures 1 to 4.
3, 2, and 4, respectively, and FIG. 8 is a diagram similar to FIG. 6 showing different examples of operating members. 6...Timed cam, 11...Quick cam, 14
...Quick lever, 15...Biasing spring, 23...
...Operation member.

Claims (1)

[Claims] 1 A timer cam that opens and closes contacts is connected to the main shaft, which is rotatably attached to the case and rotated by a drive device, and a timer cam that operates in conjunction with the timer cam. A quick cam is provided on the cam, and the abutting part of the tip of the quick lever whose base part is pivoted to the case is brought into contact with the unevenness provided on the outer periphery of the cam. A biasing spring biased to press against the outer periphery is attached, and the quick cam is suddenly operated by the biasing force of the biasing spring when the contact portion of the quick cam and the sliding slope of the unevenness of the quick lever come into contact with each other. In the timer, the biasing spring is wound around a pivot portion at the base of the quick lever. One end of the biasing spring is fixed to the quick lever, and the case is rotatably provided with an interlocking pin, and the other end of the biasing spring is hooked to the interlocking pin. The operating member is rotatably provided, and
A timer equipped with a quick mechanism, characterized in that the operating member and the interlocking pin are linked so that the interlocking pin can be rotated in a direction in which the spring force of the biasing spring is loosened by operating the operating member.