JPS63281326A - Pulse generator - Google Patents

Abstract

PURPOSE:To facilitate the design work by reciprocating cams to generate pulses of a switch and perform the optional pitch operation of cams by the rotation of a operation body provided separately. CONSTITUTION:When an operation body 4 is rotated, a lug 22 pushes a coupling piece 19 at the first cam 3a, the first cam 3a is rotated to the switch operation position, the second and third cams 3b, 3c are rotated to operate a switch 5, then the lug 22 is removed from the coupling piece 19, the first cam 3a is returned, the second and third cams 3b, 3c are returned, and the switch 5 is reset. One pulse is generated from the switch 5 according to this series of operations. The design is thereby facilitated to satisfy both the desire from users on operability and the operational characteristic inherent to the switch for pulse generation.

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 pulse is generated using a switch by the driven piece. The mutual design of the elasticity of the cam, the rotational speed of the cam, and the pinch of unevenness on the cam is extremely complex, and while maintaining the relationship between the three, 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 controls the pulse generation of the switch by reciprocating the cam, while the cam is controlled by the rotation of a separately provided operating body. It is possible to operate accurately at any pitch, thereby responding to the user's requests, and in addition, it is possible to meet both the user's request for operability and the unique operating characteristics of the pulse generation switch. It is an object of the present invention to provide a pulse generator that can be easily designed in a state that satisfies the following.

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 body is rotated, the projecting piece provided on the operating body pushes and moves the engaging piece of the first cam, and the first cam is rotated.
The cam turns. The rotation of the first cam causes the second and third cams to rotate. As a result, the pulse switch is operated by the switch operating portion in the third cam. Thereafter, the projecting piece of the operating body is disengaged from the engaging piece, and the first cam returns to rotate. As a result, the second and third cams also rotate back,
The above pulse switch returns to normal. Through this series of operations, one pulse is generated from the switch.

(Embodiments) The drawings showing the embodiments of the present application will be explained below. In the pulse generator 1 shown in FIGS. 1 to 7, 2 is a case exemplified as a base frame, 3a, 3b,
3c are first, second, and rotatable parts with respect to the case, respectively.
A third cam, 4, is an operating body rotatably attached to the case 2, 5.5 is a pulse switch operated to open and close by the third cam 3C, and 6 is a fixture.

Next, the case 2 consists of a base 11 and a cover 12, each made of a synthetic resin material. base 11 and cover 1
2 are provided with bearings 13, 14, 15, 16, respectively. The base 11 and the cover 12 are attached to each other and are integrated with each other by adhesive means, plastering means, or a fixture 6.

Next, the first cam 3a and the second cam 3b are integrally formed of an insulating material such as synthetic resin. These are the bearings 13.
It is rotatably attached to the case 2 by means of a shaft 17 attached to the case 14. In the first cam 3a, 19 indicates an engagement piece. In the second cam 3b, 18 indicates interlocking teeth.

Next, in the operating body 4, 20 is an operating shaft, and the bearing 15 is
, 16 so as to be rotatable. 21 is the axis 20
It is a rotating body fixed to a rotating body, and around its entire circumference, a large number of projecting pieces 22 for engaging with the engaging pieces 19 of the cam are arranged at equal intervals (
(may be spaced at irregular intervals).

In a normal state, the engaging piece 19 of the first cam 3a is located within the rotation locus of the protruding piece 22, as shown in FIG. 23 indicates a knob for manual operation.

Next, the third cam 3C is made of an insulating material such as synthetic resin, and is rotatably mounted to the case 2 using the operating shaft 20 (loosely fitted). In this cam 3c, 24
3 is a switch operating section, and as clearly shown in FIG. 3, one is provided for the right switch 5 and the other for the left switch 5. These switch operation parts 24.24 are connected to the cam 3c.
It also functions as a receiving part that receives an urging force that urges the object toward its normal position. 25 is an interlocking tooth, which meshes with the interlocking tooth 18 of the second cam 3b.

Next, the pulse switch 5 is connected to the switch operating section 2.
It is provided along the rotation locus of 4. In this switch, contact pieces 27 and 28 are each made of a material with good conductivity and spring properties, and their base parts are fixed to the base 11. Also, the free end of the contact piece 28 is connected to the cam 3.
The cam 3c is elastically brought into contact with the side wall of the cam 3c, and acts as a biasing member for the cam 3c. 29 is contact piece 2
7 shows the attached contact. 30 and 31 indicate connection terminals, respectively. In this embodiment, the connection terminals 31 are used as a common terminal in each of the left and right switches 5, but they may be made independent from each other in each switch.

Next, the fixture 6 is used to attach the pulse generator 1 to various electrical devices. This fixture 6 is formed by pressing a metal plate. The fixture 6 covers the substrate 32 with the cover 1.
2 and attach the gripping piece 33 to the head 1 as shown in Fig. 2.
1 to grip the case 2. The mounting piece 34 is then attached to the frame of the electrical device.

In the above configuration, under normal conditions, the contact piece 2B
, 2B, the third cam 3c is located at the normal position as shown in FIG. The biasing force is also applied to the first cam 3a via the second cam 3b, so that the first cam 3a is located at the normal position as shown in FIG. When the operating shaft 20 is rotated from this state, for example, in the clockwise direction in FIG.
9, the protruding piece 22 moves the engaging piece 19 to the right as shown in FIG. 6(B), and as a result, the first cam 3a switches as shown in FIG. 6(B). Rotate to operating position.

When the first cam 3a rotates in this way, the second cam 3b integrated with the first cam and the third cam 3c interlocked with the second cam also move from the state shown in FIG. 3 to the state shown in FIG. Rotate to the state shown in figure (B). As a result, the contact piece 28 of the right switch 5 pressed by the switch operation part 24 contacts the contact 29 (see FIG. 7).
B), the switch 5 becomes conductive. As a result, a conductive signal is obtained between the connection terminals 30 and 31 on the right switch. When the operating shaft 20 is further turned to the right from the above state, the engagement piece 19 pushed and moved by the protrusion piece 22 will eventually come off the rotation locus of the protrusion piece 22, and the protrusion piece 22 will move against the engagement piece 19. It becomes a non-contact state. Then, the first cam 3a receives the above-mentioned biasing force (biasing force by the contact piece 28).
, the engaging piece 1 is rotated back toward its normal position.
9 comes into contact with the next protruding piece 22 as shown in FIG. 6(C). As a result, the second cam 3b and the third cam 3C also rotate back from the state shown in FIG. 7(B) to the state shown in FIG. state. Through this series of operations, the terminal 25
．． One pulse is obtained during 26 seconds.

By continuing to rotate the operating shaft 20 as described above, the states (B) and (C) in FIGS. 6 and 7 are repeated one after another, and the connection terminals 30 and 31 of the switch 5 are A pulse signal (conductive signal) is obtained. The signals generated as described above are 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 20 at a constant speed, pulses at constant time intervals can be accurately obtained from the switch 5.

Furthermore, when the operating shaft 20 is rotated at non-uniform speeds, a pulse signal can be obtained from the switch 5 in which the time interval of the pulse signal changes precisely in accordance with changes in the rotating speed of the operating shaft 20.

Furthermore, in the case of the above structure, when the operating shaft 20 is turned to the left in FIG. Can be done.

Next, the first cam 3a and the second cam 3b may be constructed separately, and may be connected by other gears to rotate in conjunction with each other.

Next, a description will be given of FIG. 8.9 showing another embodiment of the present application. These figures show an example in which the operating body 4e and the third cam 3ce are arranged on separate shafts. The third cam 3ce is rotatable relative to the case 2e by fitting an integrally formed shaft piece 35 into a bearing 36 of the case 2e.

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.

(Effects of the Invention) As described above, in the present invention, when the operating body 4 is rotated, the protrusion 22 on the operating body 4
pushes and moves the engaging piece 19 of the first cam 3a to move the first cam 3a.
The cam 3a rotates to the switch activation position, and as a result, the second
, the third cams 3b and 3c rotate and the switch 5 is activated,
Thereafter, the protruding piece 22 is detached from the engaging piece 19 and the first cam 3
a returns and rotates, and as a result, the second and third cams 3b,
It has the advantage that one pulse can be generated from the switch 5 by a series of operations in which the switch 3c returns and the switch 5 returns.

This has the effect that pulses can be generated accurately by the number of protrusions 22 engaged with the engagement pieces 19, and even if the protrusions 22 are provided at equal intervals, they are not disposed at unequal intervals. However, it also has the effect of accurately generating pulses at time intervals corresponding to those arrangements, and has the great effect of making it possible to provide a pulse generator that perfectly meets the needs of users.

Moreover, in the pulse generator of the present invention, the ratio between the distance from the axis of the operating body 4 to the protruding piece 22 and the distance from the axis of the first cam 3a to the engaging piece 19, and the ratio of the distance from the axis of the operating body 4 to the engaging piece 19, Even if the swing width of the first cam 3a is specified depending on the depth of engagement with the engagement piece 19, the distance from the axis of the second cam 3b to the interlocking tooth 18 and the axis of the third cam 3c The ratio between the distance to the interlocking tooth 25 and the interlocking tooth 18.
25. By arbitrarily selecting the mutual meshing depth, the swing width of the third cam 3C can be arbitrarily set. In the case of designing a pulse generator, on the side of the operating body 4, it is possible to meet the customer's requirements, for example, by increasing the distance from the axis of the operating body to the protruding piece. The design is designed to meet the demand for increasing the number of protrusions and, as a result, increasing the number of pulses per rotation of the operating body 4, and on the other hand, the one on the side of the third cam 3c is most suitable for operating the switch 5. It is possible to design such that a wide range of fluctuations can be obtained without mutual interference, and this has the effect of making the design work extremely easy.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a front view of the pulse generator with the cover removed, FIG. 2 is a sectional view taken along line nm in FIG. 1, and FIG. I-II in
4 is a sectional view taken along line I, FIG. 4 is a view taken in the direction of the ■ arrow in FIG. 2, FIG.
Figure 7 shows the relationship between the operating body and the first cam, Figure 7 shows the relationship between the second cam, the third cam, and the switch, and Figure 8 is similar to Figure 1 showing another embodiment. 9 is a sectional view taken along the line IX-IX in FIG. 8. 2...Case, 3a, 3b13C...1st, 2nd,
3rd cam, 4... operating body, 5... switch. Figure 8 T7++ 1N Kaisho 63-281326 (7) Figure 9

Claims (1)

[Claims] The base frame is provided with a first cam having an engagement piece that can freely rotate back and forth between a normal position and a switch actuation position, and the first cam is biased toward the normal position. Further, the base frame is rotatably provided with an operating body having a plurality of projecting pieces around the periphery for engaging with the engaging piece of the first cam, and the operating body is rotatably provided on the base frame. The positional relationship between the engaging piece and the protruding piece of the operating body is such that when the first cam is in the normal position, the engaging piece is located within the rotation locus of the protruding piece, and when the operating body rotates. Therefore, when the engaging piece is pushed and moved by the protruding piece and the first cam is rotated to the switch operating position, the engaging piece deviates from the rotation locus of the protruding piece and the protruding piece becomes the engaging piece. On the other hand, on the base frame, a second cam having interlocking teeth and a third cam having interlocking teeth and a switch operation part are respectively rotatable in a reciprocating manner. In addition, the second cam and the third cam have respective interlocking teeth that mesh with each other so as to be rotatable in conjunction with each other, and the first cam and the second cam are rotatably movable together with each other. Further, a switch is provided on the base frame so as to be aligned with the rotation locus of the switch operation section so as to be operated by the reciprocating rotation of the switch operation section in the third cam. A pulse generator characterized by: