Source: https://patents.google.com/patent/EP1376630B1/en
Timestamp: 2020-01-25 18:29:25
Document Index: 147057197

Matched Legal Cases: ['art 1', 'art 1', 'art 21', 'art 22', 'art 21', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26', 'art 26']

EP1376630B1 - Grounding of a switch - Google Patents
Grounding of a switch Download PDF
EP1376630B1
EP1376630B1 EP03018787A EP03018787A EP1376630B1 EP 1376630 B1 EP1376630 B1 EP 1376630B1 EP 03018787 A EP03018787 A EP 03018787A EP 03018787 A EP03018787 A EP 03018787A EP 1376630 B1 EP1376630 B1 EP 1376630B1
EP03018787A
EP1376630A1 (en
Keiji c/o Panasonic Industrial Company Kaizaki
1995-08-23 Priority to JP21439195A priority Critical patent/JP3617134B2/en
1995-08-23 Priority to JP21439195 priority
1996-03-27 Priority to JP7270296A priority patent/JPH09265860A/en
1996-03-27 Priority to JP7270296 priority
1996-07-01 Application filed by Panasonic Corp filed Critical Panasonic Corp
1996-07-01 Priority to EP19960921137 priority patent/EP0847069B1/en
2004-01-02 Publication of EP1376630A1 publication Critical patent/EP1376630A1/en
2005-06-08 Publication of EP1376630B1 publication Critical patent/EP1376630B1/en
A prior art rotary encoder with built-in push switch comprises, as shown in Fig.9 (cross sectional view) and Fig. 10 (partially cutaway top view), a movable member 1 affixed movable to a base board 2 in holding part 1C, a rotary contact wheel 3 attached revolvable on the movable member 1 and disposed at the middle part of the base board 2, and a switch 4 disposed at a rear part of base board 2 (at the right in Figs. 9-10).
As shown in a perspective view of Fig.11, the base board 2 comprises a hole 2A provided in a side part for holding the movable member 1 movable, a hollow 2C having a stop wall 2B for fixing the switch 4, elastic contact reeds 5 for generating electric signal by having contact with the bottom surface of rotary contact wheel 3, and terminals 7 for taking the generated electric signal out.
A coil spring 8, which is positioned by an extrusion 2D located on the base board 2 at a rear part, pushes a side of the movable member 1 in horizontal direction so that push rod 1B of the movable member 1 is usually kept off the switch 4. Switch 4 is, as shown in Fig.9, fixed in the hollow 2C of base board 2 with the rear end touching to the stop wall 2B, and a button 4A facing to the push rod 1B of movable member 1.
The rotary contact wheel 3 rotates with the pillar 1A of movable member 1 as the axis when the knob 6 attached on the rotary contact wheel 3 is rotated by a force given in tangential direction indicated with an arrow F in Fig.10. The radial contact plates 3A disposed on the bottom surface of rotary contact wheel 3 slide on the elastic contact reeds 5 of base board 2, and pulse signals are generated. The pulse signals are outputted through the terminals 7, thus it works as a rotary encoder.
When the operating knob 6 is pressed in the direction of an arrow G in Fig.10 with more force than the force due to the coil spring 8, the entire part of the movable member 1 including the rotary contact wheel 3 is moved to the direction of an arrow H with the holding part 1C of movable member 1, or a hole 2A of the base board 2, as the axis of movement, causing the push rod 1B of movable member 1 push the button 4A to actuate the switch 4. As soon as the force given to the knob 6 is withdrawn, the force of twisted coil spring 8 pushes the movable member 1 back to the original position.
Now in the following, a method of manufacturing a base board containing contacts, terminals and other conductive members is described with reference to Fig.12, using the above mentioned prior art rotary encoder having push switch as the vehicle.
Fig.12 illustrates a metal sheet hoop showing a set of conductive members formed on the metal sheet and a resin molded base board with the set of conductive members inserted therein. Numeral 9 denotes an electro-conductive metal sheet hoop provided with frame alley 9A, and 10 conductive members stamped in flat sheet form with each of the members remaining connected with the frame alley 9A at connecting sections 9B. Numeral 2 denotes a resin molded base board with the conductive members 10 inserted therein.
In the next step, the base board 2 undergoes a cutting at the joints 10A of conductive members 10, and then the conductive members 10 are formed to become elastic contact reeds 5. Then, the sections 9B connecting with the frame alley 9A are cut at cutting lines 9C, and the terminals 7 are bent downward to complete a base board 2 as shown in Fig.11.
In prior art methods, therefore, the cut surface 11 had to be covered with a separate metal board 15 electrically coupled with a ground sector 16 of apparatus by means of soldering etc., whenever there is a possibility of the electrostatic problem.
This is a substantial drawback that results in an extra parts count and additional assembly steps.
Reference may be made to JP-A-05002948 which discloses the pre-characterizing features of the present invention. Reference may also be made to US-A-4843197.
An advantage of the present invention is that it cab solve the above described problems of the prior art, and can present an operation type electronic component which has a simple structure enabling the reduction of the total dimensions and cost, wherein the grounding work is completed at a same time with a mounting work.
Fig.1 is a cross sectional view showing a rotary encoder having push switch according to an embodiment of an operation type electronic component of the present invention, Fig.2 a partially cutaway top view of the above rotary encoder, Fig.3 a perspective view of the key part of the above rotary encoder, viz. base board, Fig.4 a perspective view of the key part of the above rotary encoder, viz. L-shaped actuator, Fig.5 a cross sectional view of the key part of the above rotary encoder showing how the L-shaped actuator is attached to the base board, Fig.6 a cross sectional view of the above rotary encoder showing when the knob is being pushed, Fig.7 a top view of metal sheet hoop showing the conductive members and grounding member formed on the hoop, and these members after insert-molded in a resin mold base board, Fig.8 a cross sectional side view of the above rotary encoder having push switch mounted in a casing. Fig.9 is a cross sectional view showing a prior art rotary encoder having push switch, Fig.10 a partially cutaway top view of the above rotary encoder, Fig.11 a perspective view of the key part of the above rotary encoder, viz. the base board, Fig.12 a top view of prior art metal sheet hoop showing the conductive members formed on the hoop and these members after insert-molded in a resin mold base board, Fig.13 a cross sectional side view of the above rotary encoder having push switch mounted in a casing.
An operation type electronic component according to an embodiment of the present invention is described below using a rotary encoder having push switch as the vehicle, referring to Fig.1 through Fig.8. In the drawings, those constituent parts having the same functions as those of the above described prior art are given with the same symbols, and explanation to which is omitted.
Fig.1 is a cross sectional view showing a rotary encoder having push switch according to an embodiment of an operation type electronic component of the present invention, Fig.2 a partially cutaway top view of the above rotary encoder, Fig.3 a perspective view of the key part of the above rotary encoder, viz. base board, Fig.4 a perspective view of the key part of the above rotary encoder, viz. L-shaped actuator, Fig.5 a cross sectional view of the key part of the above rotary encoder showing how the L-shaped actuator is attached to the base board, Fig.6 a cross sectional view of the above rotary encoder showing when the knob is being pushed, Fig. 7 a top view of metal sheet hoop showing the conductive members and grounding member formed on the hoop, and these members after insert-molded in a resin mold base board, Fig.8 a cross sectional side view of the above rotary encoder having built-in push switch mounted in a casing.
As shown in Fig.1 and Fig.2, a rotary encoder having built-in push switch according to the present invention comprises a movable member 21 affixed movable to a base board 22 at holding part 21B, a rotary contact wheel 3 affixed revolvable on the movable member 21 and disposed at the middle part of the base board 22, and a switch 23 disposed at a rear part of base board 22 (at the right in Figs. 1-2). This constitution is similar to that of the prior art.
As shown in perspective view of Fig.3, the base board 22 comprises a hole 22A for holding the movable member 21 movable, elastic contact reeds 5 for generating electric signal by having contact with the bottom surface of rotary contact wheel 3, and terminals 7 for taking the generated electric signal out. Within a hollow 22B of the base board 22, a pair of fixed contact points 23A and 23B for switch 23 are provided, and switch terminals 23C and 23D electrically coupled respectively with these contact points at an outer circumferential part. A pit 22C for affixing the L-shaped actuator 24 is provided in a central part of base board 22 at an outskirt of the hollow 22B. The L-shaped actuator 24 for actuating the switch 23 is comprised of arms of board form 24A and 24B, approximately rectangular to each other, and a holding pivot 24C located at the crossing part, as shown in Fig.4.
The L-shaped actuator is affixed in the pit 22C of base board 22 in the following method. The holding pivot 24C is pushed into the pit 22C of base board 22 at the enlarged part 22D (see Fig.2 and Fig.3) with the arm 24A of L-shaped actuator 24 perpendicular to the base board 22, and the arm 24B facing to switch 23, upon reaching the floor 22E of pit the holding pivot 24C is made to go horizontally in order to bring the entire body of L-shaped actuator 24 towards the switch 23. The holding pivot 24C goes beyond a small bump 22F to be fixed into a cavity 22H formed by the pit floor 22E and a ceiling wall 22G, as shown with an arrow line in Fig.5. In this way the L-shaped actuator 24 is held movable with the holding pivot 24C as the axis. The bottom surface of arm 24B keeps touching with the top of the domed movable contact 23E of said switch 23 via the flexible film 23F.
Pulse signals are generated by rotating the operating knob 6 with a force in the straight line direction as indicated with an arrow J in Fig.2; by the rotation of rotary contact wheel 3 with the pillar 21A of movable member 21 as the center of rotation the radial contact plates 3A disposed on the bottom surface of rotary contact wheel 3 slide on the elastic contact reeds 5 of base board 22 to generate the pulse signals. The pulse signals are led to the outside through the terminals 7 providing a function as a rotary encoder. This operation is similar to that in the prior art.
During the above rotating operation of knob 6, although an element of the force given to the knob in the push-in direction, or the force given to the movable member 21, reaches the domed movable contact point 23E of switch 23 via the arm 21C of movable member 21 and the L-shaped actuator 24, the switch 23 is not put into operation because the elastic force of domed movable contact 23E is set to be strong enough to resist the element of force.
When the operating knob 6 is pressed in the direction as indicated by an arrow K in Fig.2 and Fig.6 with a force strong enough to overcome the force due to the elastic force of said domed movable contact 23E of switch 23, the rotary contact wheel 3 and the entire movable member 21 move to the direction as indicated by an arrow L with the holding part 21B of movable member 21, viz. the hole 22A of base board 22, as the axis. Then, the extrusion 21D provided at the end of arm 21C of movable member 21 pushes the end of arm 24A of L-shaped actuator 24 making the L-shaped actuator 24 rotate in the direction shown by an arrow M in Fig.6 around the holding pivot 24C. The end tip of arm 24B pushes the top of the domed movable contact point 23E of switch 23 firmly downward. As the result, the domed movable contact point 23E is reversed with snapping action, and the fixed contact point 23A and the fixed contact point 23B, or the switch terminals 23C and 23D, are shortcircuited as shown in Fig.6.
As soon as the push-in force given to the knob 6 is withdrawn, the arm 24B of L-shaped actuator 24 is pushed up by the elastic restoring force of the domed movable contact point 23E, and movable member 21, rotary contact wheel 3, and knob 6 are pushed back to the original position as shown in Fig.1 and Fig.2.
A method of manufacturing the base board 22 according to the present invention is shown in Fig.7. Where, numeral 25 denotes a hoop of electro-conductive metal sheet on which a gathering of the conductive members 10 and the grounding part 26 as well as the fixed contact points 23A and 23B for switch tied with the frame 25A and the conductive members 10 by means of the connecting sections 25B is continually stamped. Numeral 22 denotes a resin-molded base board in which the conductive members 10, the grounding part 26, and the fixed contact points 23A and 23B for switch are inserted.
In the base board 22 thus formed, the conductive members 10, the elastic contact reeds 5, and the terminals 7 are shaped in the same way as in the prior art. And then, the connecting sections 25B of the grounding part 26 are cut at the cutting places 25C; of which a plate 26A to work as a lightning rod is bent upward, while plates 26B to become grounding terminals are bent downward, and the fixed contact points 23A and 23B for the switch are separated by cutting the cutting section 25D; and a base board 22 as shown in Fig.3 is completed.
A rotary encoder with built-in push switch made with the base board 22 is mounted on an apparatus as shown in Fig.8, where the grounding terminals 26B are electrically coupled with a circuit board 14 of the apparatus at the ground sector 16, furthermore the grounding part 26 is located at a place closest to the outer surface of apparatus casing 13. By so mounting, the lightning rod 26A of grounding part 26 becomes an electro-conductive substance located closest to the operating knob 6, therefore the static electricity always jumps onto the lightning rod 26A and escapes to the grounding wire through the grounding terminals 26B. Thus the grounding is ensured without providing the metal board 15, which was indispensable with the prior arts.
In Fig.3 and Fig.8 both describe the present embodiment, the plate to become lightning rod 26A of grounding part 26 is bent upward, while the plates to become the grounding terminals 26B downward; however, it is of course possible to dispose the plates for lightning rods 26A up in the right and left, whereas the plate for grounding terminal 26B down in the middle.
By taking the above described constitution, the total number of constituent components including those of the switch are reduced enabling to reduce the cost and the overall size of an operation type electronic component. Furthermore, by simply mounting a base board prepared through the above method on a circuit board of an apparatus an operation type electronic component is presented, wherein the static electricity generated from operating knob always escapes to the grounding part which is, an electro-conductive substance located closest to the knob.
A method of forming an operation type electronic component of the type comprising: a resin mold body (22) carrying a conductive member comprised of a contact point (5) and a terminal (7); an operating knob (6) for switching the electrical signal to be generated at said conductive member (5, 7); and a grounding electro-conductive substance (26) positioned so as to be between the outer circumference of said operating knob (6) and said conductive member (5, 7);
(a) providing a metal member (25A) including a first portion for forming the conductive member (5, 7) and a second portion for forming said electro-conductive substance (26), said first and second portions being in electrical communication with each other;
(b) insert molding said first and second portions in said resin mold body (22) to form said conductive member and said electro-conductive substance, and
(c) electrically separating (at 25C) said conductive member (5, 7) and said electro-conductive substance (26) after step (b).
A method according to claim 1, wherein step (c) comprises cutting the metal member at a position (25C) inside a periphery of the resin mold body (22).
A method according to claim 2, wherein step (c) comprises cutting the metal member at plural positions to define said conductive member (5, 7), said electro-conductive substance (26), and a redundant segment of said metal member that extends between said conductive member (5, 7) and said electro-conductive substance (26), and is electrically separated from the conductive member (5, 7) and said electro-conductive substance (26).
A method according to claim 1, 2 or 3, wherein said terminal (7) of the conductive member and a terminal (26B) of said grounding electro-conductive substance (26) protrude from the resin mold body (22) in a same directional arrangement with approximately the same length.
An operation type electronic component comprising:
a resin mold body (22) carrying a conductive member comprised of a contact point (5) and a terminal (7);
an operating knob (6) for switching the electrical signal to be generated at said conductive member (5, 7); and
a grounding electro-conductive substance (26) positioned between the outer circumference of said operating knob (6) and said conductive member (5, 7), the electro-conductive substance being electrically separate from the conductive member (5, 7);
the conductive member (5, 7) is insert molded in said resin mold body (22);
the electro-conductive substance (26) is insert molded in said resin mold body (22);
the component further comprises a redundant conductive segment that (i) is insert molded in said resin mold body, (ii) is made of the same metal as said conductive member (5, 7) and said electro-conductive substance (26), (iii) is not electrically connected outside said resin mold body (22), (iv) is not electrically connected to said conductive member (5, 7) nor to said electro-conductive substance (26), and (v) extends from a position adjacent to a portion of the conductive member (5, 7) to a position adjacent to a portion of the electro-conductive substance (26).
An operation type electronic component according to claim 5, wherein said terminal (7) of said conductive member, and a terminal (26B) of said grounding electro-conductive substance (26) protrude from the resin mold body (22) in a same directional arrangement with approximately the same length.
EP03018787A 1995-08-23 1996-07-01 Grounding of a switch Expired - Lifetime EP1376630B1 (en)
JP21439195A JP3617134B2 (en) 1995-08-23 1995-08-23 Operational electronic components
JP21439195 1995-08-23
JP7270296A JPH09265860A (en) 1996-03-27 1996-03-27 Push-switch-equipped rotary electronic component
JP7270296 1996-03-27
EP19960921137 EP0847069B1 (en) 1995-08-23 1996-07-01 Operation type electronic component
EP19960921137 Division EP0847069B1 (en) 1995-08-23 1996-07-01 Operation type electronic component
EP1376630A1 EP1376630A1 (en) 2004-01-02
EP1376630B1 true EP1376630B1 (en) 2005-06-08
ID=26413848
EP03018787A Expired - Lifetime EP1376630B1 (en) 1995-08-23 1996-07-01 Grounding of a switch
EP19960921137 Expired - Lifetime EP0847069B1 (en) 1995-08-23 1996-07-01 Operation type electronic component
US (1) US6229103B1 (en)
EP (2) EP1376630B1 (en)
KR (3) KR100452651B1 (en)
CN (1) CN1095181C (en)
DE (4) DE69634840T2 (en)
MY (1) MY121895A (en)
WO (1) WO1997008720A1 (en)
EP1013391B1 (en) * 1998-12-24 2003-04-09 Teikoku Tsushin Kogyo Co. Ltd. Method of molding a molding resin on a substrate having openings and switch substrate with a molding resin
TWI312526B (en) 2003-09-29 2009-07-21 Mitsumi Electric Co
JP4638829B2 (en) 2006-03-14 2011-02-23 アルプス電気株式会社 Compound operation input device
CN101410920A (en) * 2006-04-05 2009-04-15 美商楼氏电子有限公司 Multifunctional digital pulse generator and manufacturing method thereof
JP4338722B2 (en) * 2006-08-28 2009-10-07 ホシデン株式会社 Input device
JP4976180B2 (en) 2007-04-02 2012-07-18 アルプス電気株式会社 Rotating electrical parts
JP4531793B2 (en) * 2007-06-11 2010-08-25 ホシデン株式会社 Combined operation type input device
JP5255521B2 (en) * 2009-05-29 2013-08-07 アルプス電気株式会社 Multi-directional input device
KR200458058Y1 (en) * 2009-08-05 2012-01-18 주식회사 한국가스기술공사 grinder of valve seat
CN107871638A (en) * 2016-09-23 2018-04-03 富泰华工业（深圳）有限公司 Switching mechanism and the electronic installation with the switching mechanism
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1996-07-01 WO PCT/JP1996/001821 patent/WO1997008720A1/en active IP Right Grant
1996-07-01 KR KR20037016898A patent/KR100452651B1/en not_active IP Right Cessation
1996-07-01 US US09/011,480 patent/US6229103B1/en not_active Expired - Lifetime
1996-07-01 DE DE69634840T patent/DE69634840T2/en not_active Expired - Lifetime
1996-07-01 KR KR10-1998-0701281A patent/KR100452833B1/en not_active IP Right Cessation
1996-07-01 DE DE1996631535 patent/DE69631535D1/en not_active Expired - Lifetime
1996-07-01 DE DE69631535T patent/DE69631535T2/en not_active Expired - Lifetime
1996-07-01 DE DE1996634840 patent/DE69634840D1/en not_active Expired - Lifetime
1996-07-01 CN CN 96196437 patent/CN1095181C/en not_active IP Right Cessation
1996-07-01 KR KR10-2003-7016918A patent/KR20040014582A/en not_active Application Discontinuation
1996-07-01 EP EP03018787A patent/EP1376630B1/en not_active Expired - Lifetime
1996-07-01 EP EP19960921137 patent/EP0847069B1/en not_active Expired - Lifetime
1996-08-09 MY MYPI9603269 patent/MY121895A/en unknown
DE69631535T2 (en) 2005-01-05
US6229103B1 (en) 2001-05-08
KR100452833B1 (en) 2005-01-13
CN1194053A (en) 1998-09-23
DE69634840T2 (en) 2006-05-11
KR19990044048A (en) 1999-06-25
CN1095181C (en) 2002-11-27
EP0847069B1 (en) 2004-02-11
EP0847069A4 (en) 2000-03-15
KR20040014582A (en) 2004-02-14
EP1376630A1 (en) 2004-01-02
DE69631535D1 (en) 2004-03-18
KR100452651B1 (en) 2004-10-12
WO1997008720A1 (en) 1997-03-06
KR20040014581A (en) 2004-02-14
EP0847069A1 (en) 1998-06-10
MY121895A (en) 2006-03-31
DE69634840D1 (en) 2005-07-14
JP3952642B2 (en) 2007-08-01 Press / rotate electronic components
EP1387378A1 (en) 2004-02-04 Rotary-push type electronic component and electronic appliance using the same
Ref document number: 0847069
Inventor name: KAIZAKI, KEIJI,C/O PANASONIC INDUSTRIAL COMPANY
Inventor name: YAMAMOTO, TAMOTSU
Inventor name: MATSUI, HIROSHI
Inventor name: INOUE, HIROTO
Inventor name: YOKOJI, SHIGERU
Inventor name: TAMANO, KOJI
Ref document number: 69634840