JPS63216223A - Pulse generator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention aims to solve the following problems.

(Industrial Application Field) This invention relates to a pulse generator used in various electrical devices.

(Prior Art) In a conventional pulse generator, a cam is rotated, a driven piece is actuated by the cam, and a switch is turned on and off by the driven piece to generate pulses. The mutual design of the elasticity of the piece, the rotational speed of the cam, and the pitch of the unevenness on the cam is very complicated, and while maintaining a proper relationship, it is difficult to adjust the interval between the generated pulses to meet the user's requirements. It had the disadvantage that it was extremely difficult to design it to match.

(Problems to be Solved by the Invention) This invention eliminates the above-mentioned conventional problems, and while the pulse generation is controlled by reciprocating the cam, the cam can be operated in any pinch by a separately provided operating member. To enable accurate operation and thereby respond to user requests,
Moreover, the present invention aims to provide a pulse generator whose structure can be easily provided.

The configuration of the present invention is as follows.

(Means for Solving the Problems) The present invention takes the measures as described in the claims above, and its effects are as follows.

(Function) When the operating member is moved horizontally +)J, the projecting piece on the operating member pushes and moves the engaging piece on the cam, causing the cam to rotate. As a result, the switch is actuated by the switch operating portion on the cam. Thereafter, the projecting piece on the operating member is disengaged from the engaging piece on the cam, the cam returns and rotates, and the switch returns to its original position. Through this series of operations, one pulse is generated from the switch. Further, by sequentially pushing the engagement piece with one or more protrusions, a number of pulses corresponding to the number of times the engagement piece is moved is generated one after another.

(Embodiments) The drawings showing the embodiments of the present application will be explained below. In the pulse generation 2W shown in FIGS. 1 to 5, 2 is a case illustrated as a base frame, 3 is a cam rotatably provided with respect to the case, and 4 is a switch operated to open and close by the cam. , 5 indicate operating members, respectively. Next, the case 2 is made up of a base 11 and a cover 12, each made of a synthetic resin material.
3.14 and bearings 15 and 16 are provided, respectively. The base 11 and the cover 12 are attached to each other and are integrated with each other by adhesive means or by means of plastering.

Next, the cam 3 is made of an insulating material such as synthetic resin.

In this case, reference numeral 18 denotes a shaft hole, which is fitted into the support shaft 13, 14 as shown in FIG. 3, so that the cam 3 is rotatable. , 19 is an engagement piece, and 20 is a switch operation part, which is comprised of a conductive piece embedded in the cam. As clearly shown in FIG. 1, this switch operation section 20 is provided with one for the right switch 4 and one for the left switch 4. Reference numeral 21 denotes a biasing force receiving portion, which receives the biasing force that biases the cam toward its normal position. Next, the switch 4 is operated by the switch operating section 20.
It is provided along the rotation trajectory of. In this switch, contact pieces 23 and 24 are made of a material with good conductivity and spring properties, and their base parts are connected to the base 1.
It is fixed at 1. Further, the free end portion is elastically brought into contact with the side wall of the cam 3, and acts as a biasing member for the cam. 25 and 26 indicate connection terminals, respectively. In this embodiment, the connection terminals 25 are used as a common terminal in each of the left and right switches 4, but they may be made independent from each other in each switch. Next, in the operating member 5, 28 is an operating shaft, and the above-mentioned bearings 15 and 16
It is attached so that it can rotate freely. Reference numeral 29 denotes a rotary plate integrally formed with the shaft 28, and around the rotary plate are provided a number of projecting pieces 30 for engaging with the engaging pieces 19 of the cam.

In the normal state, the engaging piece 19 of the cam 3 is located within the locus of movement of the protruding piece 30, as shown in FIG.

In the case of the above structure, when the operation shaft 28 is rotated, for example, in the right direction in FIG. The projecting piece 30 contacts the engaging piece 19 as shown in FIG. 5(B).
move to the right. As a result, the cam 3 rotates, and the switch operating section 20 opens both contact pieces 23 of the left switch 4.
24 in a bridging manner. As a result, a conductive signal is obtained between the connection terminals 25 and 26 of the left switch.

In this case, since the switch operating section 20 contacts the contact pieces 23 and 24 in a rubbing manner, a reliable conduction signal can be obtained without any hysteresis.

When the operating shaft 28 is further turned to the right from the above state, the protrusion 3
The engaging piece 19 pushed and moved by the engaging piece 19 will eventually come off the movement trajectory of the protruding piece 30, and the protruding piece 3o will be in a non-contact state with the engaging piece 19. Then contact piece 2 on the right switch
The cam 3 is rotated back toward its normal position by the biasing force applied from 3.24 to the right receiving portion 21 of the cam. As a result, as shown in FIG. 5(C), the switch operating portion 2o is connected to the contact piece 23 of the left switch.
24 are separated, and the connection terminals 25 and 26 become non-conductive. Through this series of operations, terminals 25 and 26
One pulse is obtained in between. When the cam 3 returns and rotates as described above, the engaging piece 19 of the cam moves to the operating member 5.
It is received by the next protruding piece 30 as shown in FIG. 5(C). Therefore, by continuing to rotate the operating shaft 28, the states shown in FIGS. is obtained. The signal generated as described above is received by well-known circuits that receive a change from on to off as one pulse or a change from off to on as one pulse.

When generating pulses as described above, by rotating the operating shaft 28 at a constant speed, pulses at constant time intervals can be accurately obtained from the switch 4.

Furthermore, when the operating shaft 28 is rotated at non-uniform speeds, a pulse signal can be obtained from the switch 4 in which the time interval of the pulse signal changes precisely in accordance with changes in the rotating speed of the operating shaft 28.

Furthermore, in the case of the above structure, when the operating shaft 28 is turned to the left in FIG. Can be done.

Next, the number of protrusions 30 provided on the rotating plate 29 may be one. In that case, one pulse can be generated per rotation of the operating shaft 28. In addition, the operating shaft 28 and the rotating plate 2
9 may be connected by a gear train for deceleration.

In that case, one pulse can be generated for each rotation of the operating shaft 28.

Next, FIG. 6, which shows another embodiment of the present application, will be described. This example shows an example in which the base frame is provided with a regulating member for regulating the movement of the cam.

In the figure, reference numeral 32 indicates a motion regulating operation piece pivotably pivoted to the base lie, and reference numeral 33 indicates a receiving piece provided on the cam 3e.

With such a configuration, when the operating piece 32 is in the state shown in FIG. 6(A), the cam 3e acts in exactly the same manner as in the previous embodiment by operating the operating member 5e, and a pulse is generated. generated. On the other hand, when the operating piece 32e is brought into the state shown in FIG. 6(B) manually or by other mechanical means, the receiving piece 33 is pushed by the operating piece 32, the cam 3e is rotated, and the engaging piece 19e is moved. It deviates from the movement trajectory of the protruding piece 30e.

Therefore, in this state, no pulse is generated even if the operating member 5e is operated.

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 in the previous figure with an alpha character e, and redundant explanations are omitted.

(Also, in the next and subsequent versions, the same idea will be applied sequentially to the Alpha Vent rlg... to omit the redundant explanation.) Next, FIG. 7 shows one switch operation part 20 provided on the cam 3f. This is an example in which the left and right switches 4f, 4f can control pulse generation.

Next, Fig. 8 shows a different example of the urging means for urging the cam 3g toward the normal position, and shows a cam 3 made of synthetic resin.
g is integrally provided with spring pieces 35 and 35 that project from side to side. The tips of the spring pieces 35, 35 are brought into elastic contact with the inner surface of the side wall of the base l1g, so that a biasing force is exerted on the cam 3g to bias it toward the normal position.

Next, FIGS. 9 and 10 show still other examples of biasing means for the cam 3h. In the figure, reference numeral 37 indicates a spring finger piece integrally formed with the base llh, 38 a spring finger piece integrally formed with the cam 3h, and 39 a tension spring tensioned between both spring fingers. In such a configuration, the cam 3h is always urged toward the normal position by the tensile urging force of the spring 39.

Next, FIG. 11 shows another example of the operating form of the operating member, and shows an example in which the operating member is moved laterally linearly with respect to the base frame. In the figure, 41 is the base nt
A guide hole 42 provided in the guide hole 42 is a guide piece provided on the operating member 51, and is inserted into the guide hole 41 so as to be movable forward and backward. 43 indicates a manual operation knob.

With such a configuration, by operating the operating knob 43 with your finger and moving it to the right or left in the drawing, the guide piece 42 is guided to the guide hole 41, and the operating member 51 is moved to the right. Or move straight to the left.

In the process, the protruding piece 30i pushes the engaging piece 19i.

Next, FIG. 12 shows an example of a pulse generator built into a timer. In the figure, 44 is a timer case, 45 is a main shaft rotatably attached to the case 44, and 46 is a timer case.
is the main cam attached to the main shaft 45, and there is a high step part 46a around the main cam.
and a low step portion 46b. 47 is a main switch disposed on the outer peripheral side of the main cam 46, and 48 is a first gear integrally attached to the main shaft 45, which constitutes an operating member in the pulse generator. 49 is a gear train whose one end is connected to the gear 48;
0 indicates a well-known speed regulating mechanism connected to the other end of the gear train 49, respectively.

With such a configuration, the main shaft 4
The main cam 46 is rotated by manual operation.
rotates, and the main switch 47 is brought into a closed state by the high stage portion 46a. Thereafter, the main shaft 45 is rotated back by a well-known spring attached to the main shaft 45. In this case, the return speed is controlled by the speed regulating mechanism 50. Then, after a predetermined period of time has elapsed, the main switch 47 switches the lower part 4 of the main cam 46.
6b and is in an open state. As above, the main shaft 45
In the process of manually rotating the main shaft 45 and returning the main shaft 45 with a spring not shown, the engaging piece 19j of the cam 3j in the pulse generator is pushed and moved by the protruding piece 30j of the first gear 48. A pulse signal is generated from switch 4j.

Next, FIGS. 13 to 16 show still other embodiments of the present application, and show examples of different structures of the cam and switch. In the figure, 52 and 53 are respectively
, a bearing provided on the cover 12k, and 54.degree. 55 a shaft piece provided on the cam 3k, which is rotatably supported by the above-mentioned bearings 52 and 53. 56 and 57 indicate washers, respectively. 5
The switch is a switch operation part, and as shown in the figure, it is integrally formed with the cam 3 in an overhanging shape. This switch operating portion 58 also functions as a receiving portion for the urging force. 59.60 are attached to the contact pieces 23 and 24 in the switch, respectively.
The contact member provided in k is shown.

In the above configuration, by rotating the operation shaft 28k, the engaging piece 19 of the cam 3 is moved by the protruding piece 30k.
k is pressed, and the cam 3 changes from the state shown in Fig. 13 to Fig. 16 (
After passing through the state A>, the state shown in FIG. 16(B) is reached. As a result, the contact members 59 and 60 of the switch 4k come into contact,
Switch 4 produces a conductive signal. When the protruding piece 30k further pushes the engaging piece 19k due to the rotation operation of the operating shaft 28, the engaging piece 19 deviates from the rotation locus of the protruding piece 30. Then, the cam 3 is pushed back toward the normal position by the urging force applied from the contact piece 23k of the switch 4k to the switch operating portion 58 of the cam 3k. In this process, as shown in FIG. 16(C), the next protrusion 30k on the operating member 5k comes into contact with the engagement piece 19k on the cam 3k, and the protrusion 30k pushes the engagement piece 19k again. As a result, the cam 3 returns to the state shown in FIG. 16(B), and a conduction signal is issued from the switch 4k. Thereafter, the states shown in FIGS. 16(B) and 16(C) are repeated one after another, and pulses are generated in the switch 4 one after another.

Next, FIG. 17 shows still another embodiment of the present application, in which protrusions 30m are provided at irregular intervals on the operating member 5m. In such a device, the cam can be moved 3 m by horizontally moving (rotating) the operating member 5 m at a constant speed.
is rotated back and forth at time intervals corresponding to the arrangement interval of the projections 30m. As a result, the switch 4m operated by the cam generates pulses at corresponding time intervals.

(Effects of the Invention) As described above, in the present invention, when the operating member 5 is moved laterally, the protruding piece 30 on the operating member 5 pushes and moves the engaging piece 19 on the cam 3, and the cam 3
The switch 4 is activated by a series of operations in which the protruding piece 30 is disengaged from the engagement piece 19, the cam 3 is rotated back, and the switch 4 is returned to its original position.
It has the advantage of being able to generate a single pulse from. This has the effect that pulses can be generated accurately by the number of protrusions 30 engaged with the engagement pieces 19, and even if the protrusions 30 are provided at equal intervals as shown in FIG. Even if the pulses are arranged at irregular intervals as shown in Fig. 17, it is possible to accurately generate pulses at time intervals corresponding to the arrangement, and we hope to provide a pulse generator that perfectly meets the needs of users. There are great effects that can be made possible.

[Brief explanation of the drawing]

The drawings show an embodiment of the present application; FIG. 1 is a front view of the pulse generator with the cover removed, the second is a sectional view taken along the line ■ to ■ in FIG. 1, and FIG. 3 is a cross-sectional view of the pulse generator shown in FIG. 4 is an exploded perspective view, and 5 [N (A) to (C
) is an explanatory diagram of the operation, FIGS. 6(A) and (B) are explanatory diagrams of the operation of an embodiment equipped with an operation piece for regulating operation, and FIG. 8 is a partial view showing another example of the cam urging means, FIG. 9 is a partial view showing still another example of the cam urging means, and FIG. 10 is a partial view showing another example of the cam urging means. FIG. 9 is a cross-sectional view taken along the line x-X, FIG. 11 is a front view showing another example of the operating member, and FIG.
Fig. 2 is a schematic front view showing an example in which a pulse generator is incorporated into the tooth train of a timer, and Fig. 13 is a front view showing a state in which the cover is removed of a pulse generator equipped with a switch operating section and a switch having a different structure. Figure 14 is a cross-sectional view taken along the line XrV-XIV in Figure 13, Figure 15 is an exploded perspective view of the pulse generator in Figure 13, and Figures 16 (A) to (C) are pulse generators in Figure 13. FIG. 17 is a partial view showing an example of a pulse generator in which protrusions on the operating member are arranged at irregular intervals. 2...Case, 3...Cam, 4...Switch, 5
... Operating member, 19... Engagement piece, 20... Switch operation part, 30... Protruding piece. Figure 5 (A) Figure 6 (A) Figure 5 (B) Figure 7 Figure 8 Figure 9 Figure 11j Figure 102

Claims (1)

[Claims] The base frame is provided with a cam that can rotate reciprocally and has an engaging piece and a switch operation part, and the cam is biased toward a normal position. is provided along the rotation locus of the switch operation section so that it can be operated by the reciprocating rotation of the switch operation section, and the base frame is further provided with an engagement piece of the cam that engages with the engagement piece of the cam. An operating member having a protruding piece for engagement is provided along the cam so as to be movable laterally, and the positional relationship between the engaging piece of the cam and the protruding piece of the operating member is normally the same as that of the above-mentioned engaging piece. When the engaging piece is located within the locus of movement of the protruding piece and the engaging piece is pushed by the protruding piece to a position where the operation of the switch is completed by the lateral movement of the operating member, the engaging piece The pulse generator is characterized in that the protruding piece is deviated from the movement trajectory so that the protruding piece is in a non-contact state with the engaging piece.