DE1918789A1 - Synchronization switch - Google Patents

Description

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PATENT ENGINEERS F.W. HEMMERICH 6EtD MOUtI D.GROSSE 21 5 * 9

-bra-

9-4-1969

-El-

Nippon Gakki Seizo Kabushiki Kaisha, Haminamatsu-shi / Japan

The present invention relates to a synchronization switch, but it is particularly concerned with a synchronization switch, which in the main is used in electronic musical instruments.

The conventional synchronizing switch shown in Fig. 1 is made from a base plate 1, from an actuating element 2 with several slot openings 3, welehe to the vertical direction of movement of the aforementioned actuating element are arranged at right angles, from a leaf spring 4, which the aforementioned actuating elements 2 has to press upwards from a series of fixed contacts 5, which are in such a way on the Qruhdplatte 1 are arranged that each of the fixed contacts 5 at a distance A in each case a slot opening 3 opposite, as well as from a number of movable contacts, which in the number of the already mentioned fixed ones Contacts correspond and are each guided through the Schlttz openings 3. The contact surface 6a of each movable contact 6 works with the corresponding fixed contact together and touches this fixed contact when the actuator. 2 against the caused by the leaf spring 4 as a drive element Force is moved.

This arrangement or construction is problematic in that that at an excessively large distance A, the contact surfaces 6a of the movable contacts 6 are difficult to achieve bring synchronous contact of the fixed contacts 5 3D are because it is more difficult in terms of permanent contacts

909845/1048

BATH

PATENT ENGINEERING 21 5Ä9 / DOSSEIDORF 10 H OM8E RG EB STRASSE 5 _% 1918789 ~ ^ h -

April 4th, 1969

-E2-

is to classify the moving contacts precisely. is against the distance A small, then the movable ones Contacts 6 by too high on the actuator acting force is pressed and stressed beyond its elastic limit. The one for this sync switch Moving contacts belonging to them also touch the fixed contacts which are assigned to them are without an initial cenotact pressure.

The present invention therefore aims to provide a synchronization switch which is so improved that the movable contacts, their associated fixed contacts under a sufficient

touch large initial contact pressure.

That falling within the scope of the present invention Synchronization switch consists of: a basic column, an actuating element with several Slot openings which are arranged at right angles to the direction of movement of this actuating element are, from a device which the aforementioned actuator pushes in one of its directions of movement

or forcing, from a series of fixed contacts, which \ the corresponding slot openings in a given

Are arranged spaced opposite, as well as from a row of moving contacts, which are in the number of the fe- : 25 most contacts e «% & p3si * ht correspond and each through

the corresponding slot openings are guided, wherein the contact area of each movable contact the 'Contact surface of the fixed contact assigned to it then

j is touched when the aforementioned actuating element is

j. gen the from the already mentioned resilient drive element

"ment evoked force is moved. The in the frame

the synchronization switch covered by the present invention is indicated by that to

909845/1 0 * 4 8

BATH

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P AT EN T I N O EN IE U It E F.W. HEMM E R I C H - G E R O MD ILE R - D. GJlOSSE 21 539 DOSS E IDO R F 10 - HOMIEXGEt STRASS E S «* 1 9 1 8 7 8 9 ~ ^ h ~

^ 9.4.1969

-E3-

two sections for each of the movable contacts include * a first section with the already mentioned contact area and a second section, that due to the between the two sections

5- dene elasticity or spring force a part against the Inner wall of the relevant slot opening is pressed »that at least one of the aforementioned two sections can be bent in the direction of movement of the actuator, be elastically bent can, and communicates with the other section at a point at which the specified length of the first section, which lies between this point and the contact surface, is larger than the one before mentioned distance

In this case, because of the specified length for the first section, the movable contact at is sufficient of great strength, it is designed and made to be flexible, so that it is also damaged by the the actuator acting force avoided.

909845/1048

PATENT ENGINEERS F. W. HEMMERICH. GERD MDLtER- D.GROSSE 21 539 DÜSSELDORF IO -HOMBERGER STRASSE 5 | ^ 1918789 "" bh-

T 9.4.1969

-Gl-

The objects and characteristics of the present invention can be better understood if the description given below and the description attached to this patent application are related to this Drawings can be used as an aid. In detail is: -

Fig. 1 is a perspective view of a conventional one Synchronization switch, which for the purpose of comparison with the present one Invention is reproduced.

Fig. 2 is a side view of one in the frame of the here

present invention covered by the synchronization switch.

3 is an enlarged cross-sectional representation of one Part of the aforementioned synchronization switch.

15 Fig. 4 is an enlarged cross section of part of the

Synchronization holder in plan view.

Fig. 5 is a perspective view of a, to this

Synchronization switch belonging to the movable ■ Contacts. .

20 Fig. 6a cross sections through the sides of part of the

⁹ "already mentioned synchronization switch,

the movable contact touching its associated fixed contact.

7 is a side view of another embodiment of the subject matter of the invention.

FIG. 8 is an enlarged perspective view of part of the synchronization switch shown in FIG. 7;

Figure 9 is a side view of yet another embodiment of the subject invention.

9Ü9 & 4 $ / 1048

■ '■■■' "■ .. BAD ORIGINAL

'.FATINTINOINIEUtI F.W. HEMMERICH OERD MDUER D. OROSSE 21 549

DDSS UDO RP 10 HOMITROtI STRASSE S ** 1918789 - bra -

b 'ViV (VvJ 9.4.1969

FIG. 10 shows part of the synchronization switch shown in FIG in an enlarged view.

The synchronization switch shown in FIGS. 2 to 6b is the subject of the present invention. This synchronization switch is made up of: from a base plate 21, from an actuating element 22, which is provided with a series of slot openings 23 is provided, from a leaf spring 24, which has to push the aforementioned actuating element 22 upwards, from a series of fixed contacts 25, each at a distance B from the relevant slot openings are arranged, as well as from a series of movable contacts 26, which in the number of the number of already mentioned fixed contacts 25 correspond. The already mentioned base plate 21 is made of an electrically insulating Material, for example made of Bakelite, made and connected to a metal frame 27 in a vertical position. This metal frame 27 has a horizontally directed plate part 27a in which a slot opening 28 is incorporated. The upper part of the actuating element 22 is guided through this slot opening 28 in such a way that that this slot opening supports and guides its movement in the vertical direction. The already mentioned actuation element 22 consists of a vertically extending Plate made of electrically insulating material, for example Bakelite. The already mentioned shill openings 23 are at right angles to the vertical movement of the actuating element 22 in this actuating element incorporated, preferably in a vertical

909845/1048

PATINTINOtNItUIE F.W. HEMMERICH · OERO MÖLLER. O.OROSSE 215 ^ 9

0OSIIIPOIPII-HOMITROiRSTRAtIiS / 1Q1R7ßQ - bh -

* ¹ ^ ^{ίΌ / ΌΌ} 9.4.1969

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arranged row. The already mentioned fixed contacts 25 are made of electrically conductive material, for example brass or copper, and are parallel arranged at the same distance from one another on a vertical plane that they stand out from the base plate 21 extend forth while facing the relevant movable contacts. The movable contacts 26 can preferably extend through the slot openings 23 that they to the longitudinal direction of the fixed Contacts are arranged at a right angle. A first belongs to no one movable contact 26

long section 29 with one at its front end arranged contact surface 26a, furthermore belongs to each movable contact 26 a second long section 30. The aforementioned first long section 29 can extend in the direction of movement of the actuating element 22, i.e. in the vertical direction, flex elastically. To the To achieve the elasticity described above, the aforementioned movable contact 26 can be made of an elestij 20 copper alloy, for example phosphor bronze, : which is of course also electrically conductive

t will «The already mentioned contact area 26a is located

the top of the respective corresponding fixed contact • piece 25 opposite in such a way that both then work together,

25 when the actuating element 22 against the spring force caused by the aforementioned spring 24 vertically after is moved down. The second long section 30 extends parallel to the first section 29 and is connected to this at one point, for example the rear part of the first-mentioned section and in such a way that

909845/1048

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PATENT ENGINEERS FW HEM ME RICH ■ GERD MDU ER -D. SIZE 21 549

DDSS ELDO R F 10 HOMBERGER S TRASSE 5 1918789 - bh -

f 9.4.1969

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the specified length of the first section between this point and the contact surface 26b is greater than the aforementioned distance B. The aforementioned second long section 30 preferably consists of the two increased side walls 30 a, which together with the first long section by punching and bending a copper alloy. The first paragraph is guided beyond the aforementioned point and is at its rear end with a bracket - '"10 31 in connection, which extends from the horizontal plate part 27a of the metal frame extends downward. This holder 31 is made of an electrically insulating Material, for example made of Bakelite. The aforementioned first and second sections 29 and 30 are partially inserted into the respective slot opening 23

used, in such a way that the parts used these sections against / opposite one another Parts of the inner wall of the relevant slot opening each through the sections between the two mentioned existing Elastiaifit are pressed. The already mentioned leaf spring 24 preferably has a after downward deflection 24a in its middle Part, while the front end with the lower end of the Actuating element 22 is in connection, whereas its rear end is connected to the lower end of the bracket 31.

During operation, the actuating element 22 is then moved downwards against the spring force of the leaf spring 24 when its upper end is pressed downwards; only then do all the contact surfaces _{come in} [synchronously

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PATENT ENGINEERS F. W. H E M M E R I C H · G E R D M O L L E R · D. G R O S S E 21

^ DOssEiDORFio-HOMBERGERSTRAssEs _m 1 Q 1 fi 7 ft * -) "'^ h ~ - ■■ - ■ -

as can be seen from Fig. 6a, thereby with the corresponding fixed contacts 25 in contact * that the movable Contacts 26 mainly by bending the part of the first long section which defines is through the point already mentioned; where this section is inserted into the Schlutz opening and through its rear end, are moved. At this moment, in which the aforementioned actuating element 22 is moved further down, there are preloads, which are caused by the elasticity present between the first and second sections, the first section bends, too, so that this ^ Initial contact pressure, which acts on each of the fixed contacts 25, from the inner wall of the slot opener tion 23 is transmitted. Another downward movement ■ 'of the. Actuating element.-22- after switching on, the aforementioned Contact initial pressure it causes; that the Part of the first section. 29, which through the contact surface 2.6a and the bond between the first and - Second sections is set, as shown in Fig- - ■: 6b is bent, is. ..-.- ■ · ·.,.

Because in this case compared to a conventional syn- ■; _ · ■ - "■ -" chronization switch of section B-, kileiner, is, can

all contact surfaces 2: 6a dev ; possible contacts 26 ^;; easily and accurately in beimEi.nbau iilnblick to them · "· ^■■;. respectively associated fixed contacts 25, aligned ■ ■ are;.. ¹ V / hen also te of, Abs nd B * is small as is the Movable contact, however, is designed to be flexible even with a successful high strength, because between the 30 · ...,. contact _{bottle, and the connection r} deor er.§te-n. and second .'...:;.: AJbschni.tte the movable iKpntakt-one big enough

b.e ^ i a. downward movement of the actuating

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PATENT ENGINEERS FW HEMMERICH-GERDMOUER-D. SIZE 21 öjfö

4'DDSSEIDORFIO-HOMIERGEIISTRASSES 1918789 - bh -

3 April 9, 1969

- G 6 -

₍ movement element 22 the bending stresses caused by this downward movement are absorbed. This, however, can effectively protect the movable contact from damage.

In contrast to this embodiment of the subject matter of the invention, a rigid material can be used for the first section belong, while the second section is made of a flexible material. In this case, through the downward movement of the actuating element causes bending of the second section.

7 and 8 illustrate other exemplary embodiments of what falls within the scope of the present invention Synchronization switch reproduced. This version differs in this from the first version of the subject matter of the invention that it includes movable contacts 46, which by bending .eines electrical conductive and e ± ele% elastic material, for example a copper alloy, and a wire 52 corresponding to the aforementioned movable contact will. Each of these wires 52 is from the respective one movable contact 46 out to holder 51 and is connected to a switching element 53, for example a resistor, provided, which is connected between the aforementioned components 46 and 51. The connecting wires 51 are of course made of a flexible and electrically conductive material. ■ '

To the movable contact 46 includes a first long From _t scnnitt 49 and a second ganger section 50. These two sections differ from those described with the first embodiment of the subject invention first

909845/1040

PATENT ENGINEERS FW HEMMERICH. GERD MDUER. D. LARGE 21 5 ^ 9 '^r; '■ ^l '

* DDSSElDO RF 10 ■ HOMBERGER STRASSE 5 1918789 ~ bh ~ '

OK 9.4.1969

" ^V - G 7 -

and second sections in that the rear end of the first long section 49 is guided to a point 54 is, at which the two mentioned sections 49 and 50 are connected to one another, while the front end of the second section 50 above one in the actuating element 42 built-in slot opening 43 is riveted to a part of this actuating element 42, wherein an electrical connection then exists via the connecting wire already mentioned.

Because the previously not mentioned other parts of this embodiment of the subject matter of the invention are designed and are constructed as described in connection with the first embodiment of the subject invention description of these parts is omitted for brevity. They are also shown in the relevant drawings marked with the same reference numbers, for example in FIGS. 7 and 8, albeit the Reference numbers given in the second place, which belong to FIG. 6a to FIG. 2, respectively, as shown in FIGS. 7 and Fig. 8 can be seen in the numbers 4 and 5 have been changed.

During operation, the downward movement of the actuating element 42 does not cause any bending of the second section 50 as long as the contact surface f> $ jL 49a of the first contact 49 does not touch the corresponding fixed contact 45. A further downward movement of the actuating element 42, after the contact surface 49 comes together with the relevant fixed contact, results in the movable contact 46 being actuated in essentially the same way as it is in combination.

909845/1046

PATENT ENGINEERS F. W. H E M M E Rf C H · 'G ER D MO L I E R. D.G R O S SE 21

DOSS ElOO RF IO HOMBERCE * STJRASSE 5 1 9 1 8 7 8 ^ ~ ^ h-

'**' '"'« ^ 9.4.1969

with the first implementation of the subject matter of the invention. During the aforementioned further Downward movement of the actuating element 42 bends -. ·. in cooperation with the first section 49 also -. · -, ■ the second section. 50 because the second section 50 possesses the same elasticity as the first section 49 .. This embodiment. enables an even simpler one

■ -...- construction of the movable contact 46 by bending of a steel part, i.e. a simpler version compared to the first execution of the subject matter of the invention

. With Fig .9 und.lO "other Ausführungsbeiispie- -ië be the wrong in the context of the present invention _herein:; ... lumbar sync switch shown. The one here like-> -, - v. .the given synchronization switch is different _; In it, from the first described embodiment of the inventive object, that there is a movable contact 66 made of components with a round cross-section

consist,. «. oak made of an elastic and electrical > conductive material, for example made of a copper alloy -., ._.- rung, are made. The operating apparatus 62 associated with this synchronization switch is not only with a series of vertical slot openings 63 di, ese in the same way as the aforementioned Aus.fUhrungsbeispielen arranged - but also ,, with a series of rectangular openings 72, which . . . each of the aforementioned slot openings 63 ent. ... speak.

To each of the aforementioned movable contacts 66 belongs. ,,:., a first long section 69 ,. its contact surface 69a 30 .; -, - .. is arranged on its .forward end, a two-

PATENT ENGINEERS FW HEMMERICH. GERD MÖLLER. D. GROSSE, 21

DDSSELOORF 10 'HOMBERGER STRASSE 5 * 1918789 "* ^ h"

Ä 9.4.1969

ter section which is connected to the first section 69 at a pivot point 73 such that the of this point and the contact surface 69a limited specified length is greater than the distance B, which from the contact surface 69a and a part 74 of the first section guided through the vertical opening 63

69 is limited. This part 74 is inserted into the aforementioned opening 63 that it is through a Torsional prestress, which is applied to a rotating part to which the pivot point 73 is also assigned, is pressed against the lower side wall of the opening 63 already mentioned. The second long section

70 uses a pivot point 75, which is its front End is assigned. This pivot point is partially inserted into the corresponding slot opening 72, and -, in such a way that it is due to the elasticity present between the aforementioned two sections 69 and 70 is pressed somewhat behind the pivot point 75 against the opposing walls of the opening 72.

To maintain the torsional prestress, the opening 72 prevents the second section 70 can be twisted torsionally, and this because of small erections in the forward direction.

With the exception of the components mentioned above, the other components of this synchronization switch are designed like the components which have been described with the first embodiment of the subject matter of the invention, their description is omitted for the sake of brevity. The parts are identified with the same reference numbers in the relevant drawings, ie in trie. 9 and 10, albeit the digits 2 and 3 in rig. ^ to Fig. 6b have been replaced by the cites 6 and 7 in Fig. 9 and 10.

909845/1 (Ko

BATH ORIGINAL

PATENT ENGINEERS F. W. HEMMERICH. GERD MÖLLER. D. SIZE 21 5Λ9

4DOSSEIDORFIO-HOMBERGtIlSTRASSES 1918789 ~ k ⁿ ~

ifS 9.4.1969

^f - G 10 -

Until touching the respective fixed contact 65 caused by the contact surface 69a during the Operation a downward movement of the actuating element 62 a deflection of the second section 70.

Then, the actuator 62 moves further down, • then an existing between the first and second portions of elasticity is · a bias voltage, that is, the torsional bias, cause, acting on the part ·, Z j which includes the Drehpukt 73rd This preload is transmitted to the fixed contacts 65 through the lower side wall of the opening 63 as initial contact pressure. The further downward movement of the actuating element after the application of the initial contact pressure causes the element between the contact surface 69a and the part of the second section 70 - this inserted into the opening 72 and led straight to the connection point 73 - to bend.

The existing with this embodiment of the subject invention Advantages are achieved essentially through the same technical process as in the first embodiment falling within the scope of the present invention is the case.

In the above-described embodiments of the subject matter of the invention The slot openings can be in two or more rows, which are in the direction of movement of this actuating element are arranged to be incorporated. The aforementioned slot openings can be right-angled be arranged in one or two rows to the direction of movement of this element. In these cases the respective fixed and movable contacts can of course be arranged in such a way that they correspond to the positions of these Slot openings are appropriately located.

909845/1048

Claims (5)

PATENT ENGINEERS F.W. HEMMERICH GERD MÖLLER- D. GROSSE 21 5Φ9 DOSS E L D O R F 10 · H OMBERGER S TR ASS E S. 1918789 "" ^ h ~ / te ^Y ■ · · 9.4.1969 ^ΙΓ - - A 1 ■■ - ■ Nippon Gakki Seizo Kabushiki Kaisha, Haramamatsu ^ shi ^ / Jagan Patent claims: A synchronization switch consisting of: a base plate, an actuator with a row of slot openings, which are incorporated into this actuating element transversely to the direction of movement are, from a drive element, which the vorer imagined actuator ^ in one of its directions of movement pushes or forces, from a series of ι fixed contacts, which in such a way with the aforementioned 'th base plate are connected to that each of the the aforementioned fixed contacts to the respective already mentioned slot openings at a certain distance opposite, as well as _from a series of > M movable contacts, the contact area of which is then the Fixed contacts touched when the aforementioned actuator against the resistance or the The spring force of the drive element is pressed downwards will. The sync switch characterized in that for every movable contact there is a first section with the contact surface as well as a two- belong to the section; at least part of that between the aforementioned two sections existing elasticity against the inner wall of the corresponding Slot opening is pressed; at least: one of the two sections is in the direction of movement of the already mentioned actuating element can bend and is connected to the other section at a point in such a way that the specified length of the first section, which is delimited by this point and the contact surface, is greater than _: the aforementioned distance. 909845/1048 BATH PATENTINGENI E.U RE F.W. HEMME RIC H · GERD MÖLLER- D. GROSSE 4DOSSELDORFIO-HOMIERGERSTRASSeS 9.4.1969 - A 2 - 2. A synchronization switch according to claim 1, characterized in that the two sections have parts which fit into the ν opposing inner walls of the respective Schlitzöffnun ^ are pressed. 3. A synchronization switch according to claim 1, characterized in that the two sections by means of a pivot point to which the aforementioned connection point also belongs, are connected to each other. 4. A synchronization switch according to claim 2, dadurcn marked that the first section extends backwards and is guided with its rear end onto a holder is, which with the already mentioned basic plate communicates. 5. A synchronization switch according to claim 1, characterized in that a part of the first section by means of a torr sion bias, give way to a turned part to which also the aforementioned connection point is heard, given, is pressed against the lower side wall of the respective slot opening; Finally, the second Abscnnitt rUckwartigen with its end to the ~ 'j bracket member to the base plate in United bond stands, is connected. ü. A synchronization switch according to claim 1, characterized in that the already appointed slots in an in the direction of movement of the aforementioned actuating element lying rows are arranged.