Source: https://patents.google.com/patent/JP4019601B2/en
Timestamp: 2020-07-14 14:33:31
Document Index: 419725714

Matched Legal Cases: ['art 4', 'art 12', 'art 15', 'art 15', 'art 15', 'art 13', 'art 15', 'art 16']

JP4019601B2 - Lever switch - Google Patents
JP4019601B2
JP4019601B2 JP2000113741A JP2000113741A JP4019601B2 JP 4019601 B2 JP4019601 B2 JP 4019601B2 JP 2000113741 A JP2000113741 A JP 2000113741A JP 2000113741 A JP2000113741 A JP 2000113741A JP 4019601 B2 JP4019601 B2 JP 4019601B2
JP2000113741A
JP2001297660A (en
2000-04-14 Application filed by 松下電器産業株式会社 filed Critical 松下電器産業株式会社
2001-10-26 Publication of JP2001297660A publication Critical patent/JP2001297660A/en
2007-12-12 Publication of JP4019601B2 publication Critical patent/JP4019601B2/en
The present invention relates to a lever switch used for detecting the presence or absence of a recording medium and the operation of a mechanism in various electronic devices.
As a detection lever switch used in various electronic devices and used to detect the presence of recording media such as tapes and disks, or to detect the operation of the mechanism, etc., the movable contact made of a thin elastic metal plate facing each other at a predetermined interval A so-called leaf switch is widely known in which the fixed contact is brought into contact with the lever by a turning operation of a lever.
Such a conventional lever switch will be described with reference to FIGS.
FIG. 10 is a cross-sectional view of a conventional lever switch. In FIG. 10, reference numeral 1 denotes an insulating resin box-shaped case having an open front and an opening 1A on the left side, and 2 is a case 1 having an intermediate shaft portion 2A. The drive portion 2B at one end of the lever 2 is housed in the case 1, and the operation portion 2C at the other end protrudes obliquely upward to the left from the opening 1A of the case 1.
In the above configuration, when the operation portion 2C of the lever 2 is turned downward with a predetermined force, the drive portion 2B is turned upward with the shaft portion 2A as a fulcrum as shown in the sectional view of FIG. Therefore, the movable contact 3 is pushed up and bent by the upper surface of the drive unit 2 </ b> B, and the middle part contacts the contact part 4 </ b> A of the fixed contact 4.
However, in the above-described conventional lever switch, after the operation portion 2C of the lever 2 is rotated to bring the movable contact 3 into contact with the contact portion 4A of the fixed contact 4, the lever 2 is further rotated to flex the fixed contact 4. Accordingly, since a stable contact pressure with the movable contact 3 is obtained, there is a problem that the contact of the contact tends to be unstable when the lever 2 is being operated.
The present invention solves such a conventional problem, and an object of the present invention is to provide a lever switch capable of obtaining stable contact of a contact immediately after the contacts are brought into contact with each other.
According to the first aspect of the present invention, a common contact point and a fixed contact point are provided on the adjacent inner side walls, and the shaft part in the middle of the lever is rotated in the opening part of the case having an opening part on one of the opposing side walls. The fixed portion at the tip of the first arm portion that is held movably and extends from the bent portion in the middle of the substantially V-shaped movable contact is press-fitted and fixed between the common contact of the case and the support protrusion, and the second arm portion The contact point of the tip is elastically contacted with the fixed contact or its inner wall, and the lever drive unit is brought into contact with the bent portion of the first arm unit to constitute a lever switch. Is press-fitted between the common contact and the support, and the contact part of the movable contact that has been slightly bent in advance is elastically slid on the inner wall of the case or the fixed contact to make contact with the fixed contact. Because it is configured to do so, even if the lever is in the middle of operation, the movable contact Constant contact pressure of the contact immediately after contact with the fixed contact can be ensured, the contact has the effect that it is possible to obtain a stable lever switch.
According to a second aspect of the present invention, in the first aspect of the invention, the common contact is provided at the center of the inner side wall, the fixed contact is provided on at least one of the inner side walls adjacent thereto, and the side wall facing the common contact of the case. An opening is provided at the center of the lever, and the shaft in the middle of the lever is rotatably held at the center of the opening. The switch configuration is symmetrical, so the position of the fixed contact and the lever and movable contact By changing the combination direction, it is possible to form two types of lever switches having the same component and different lever operating directions.
The invention according to claim 3 is the invention according to claim 2, in which fixed contacts are provided on the left and right inner walls adjacent to the common contact, and the two fixed contacts are short-circuited in the case. Since fixed contacts are provided on the left and right inner walls adjacent to the contacts, two types of lever switches with different lever operating directions can be obtained simply by changing the combination direction of the lever and movable contact. Have
The first aspect of the present invention will be described with reference to the first embodiment.
FIG. 1 is a sectional view of a lever switch according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the lever switch. In FIG. A common contact 12 made of conductive metal and a fixed contact 13 made of conductive metal are also implanted and fixed on the left inner side wall adjacent thereto by insert molding or the like.
A support protrusion 11A is formed in the vicinity of the common contact 12 of the case 11 at a predetermined interval, and a cylindrical protrusion is formed in the opening 11B on the upper side wall facing the common contact 12. A support shaft 11C is formed.
Reference numeral 14 denotes a lever made of an insulating resin. A shaft hole 14A, which is an intermediate shaft portion, is rotatably held by the support shaft 11C of the case 11, and a drive portion 14B at one end is housed in the case 11. The other end operating portion 14 </ b> C protrudes obliquely upward from the opening 11 </ b> B of the case 11.
Reference numeral 15 denotes a movable contact made of a substantially V-shaped elastic metal sheet that is narrower than the depth of the case 11, and is housed in the case 11 with the intermediate bent portion 15A slightly bent. At the tip of the first arm portion 15B extending from one end of the bent portion 15A, a substantially U-shaped fixing portion 15F having a connecting portion 15D and an abutting portion 15E is provided via a bent portion 15C. The fixing portion 15F is slightly bent and the connection portion 15D is elastically contacted with the common contact 12 and the contact portion 15E is elastically contacted with the support protrusion 11A of the case 11, and is press-fitted between the common contact 12 and the support protrusion 11A. .
Further, in the vicinity of the bent portion 15A of the first arm portion 15B of the movable contact 15, the left side surface of the drive portion 14B of the lever 14 is elastically contacted, and the right side surface of the drive portion 14B is elastically contacted with the lower surface of the opening portion 11B of the case 11. While being positioned, the contact portion 15H at the tip of the second arm portion 15G extending from the other end of the bent portion 15A is in elastic contact with the left inner wall of the case 11.
Then, the cover 16 covers the front surface of the case 11 storing these, and the shaft hole 14A of the lever 14 is held so as to be rotatable in the left-right direction parallel to the lower inner wall of the case 11 in which the common contact 12 is implanted. The lever switch is configured.
In the above configuration, when the operation portion 14C of the lever 14 is turned downward with a predetermined force, the drive portion 14B is turned clockwise with the shaft hole 14A as a fulcrum as shown in the sectional view of FIG. For this reason, the movable contact 15, which is pressed near the bent portion 15 </ b> A of the first arm portion 15 </ b> B on the left side surface of the drive portion 14 </ b> B, rotates counterclockwise with the bent portion 15 </ b> C as a fulcrum.
Then, the contact portion 15H at the tip of the second arm portion 15G elastically slides downward on the left inner wall of the case 11 to contact the fixed contact 13, and the connection portion 15D of the fixed portion 15F becomes the common contact 12. The common contact 12 and the fixed contact 13 are electrically connected to each other through the movable contacts 15 in which the contact portions 15H are elastically contacted with the fixed contacts 13, respectively.
Further, when the operation force to the operation portion 14C of the lever 14 is released, the contact portion 15H moves away from the fixed contact 13 and elastically slides on the left inner wall of the case 11 upward by the elastic return force of the movable contact 15. At the same time, the left side surface of the drive unit 14B is pressed near the bent portion 15A of the first arm portion 15B, the lever 14 is rotated, and the operation unit 14C is returned to the state shown in FIG.
As described above, according to the present embodiment, the fixed portion 15F of the movable contact 15 is press-fitted between the common contact 12 and the support portion 11A, and the contact portion 15H at the tip of the second arm portion 15G is connected to the left of the case 11. The movable contact 15 is fixed to the fixed contact 13 even when the lever 14 is in the middle of operation because the contact is made by sliding on the inner wall or the fixed contact 13 with a predetermined pressure. It is possible to obtain a lever switch that can be secured with a constant contact pressure of the contact immediately after contact and that is stable in contact.
In the above description, the opening 11B is provided on the upper side wall of the case 11 facing the common contact 12, and the shaft hole 14A of the lever 14 is rotatably held on the support shaft 11C. As shown in the sectional view of FIG. 4, the opening 18B is provided on the right side wall of the case 18 facing the fixed contact 19, and the shaft hole 20A of the lever 20 is rotatably held on the support shaft 18C. Implementation of the invention is possible.
In addition, a so-called push-on type switch having a configuration in which the contact portion 15H of the movable contact 15 elastically contacting the left inner wall of the case 11 is connected to the fixed contact 13 by rotating the operation portion 14C of the lever 14 has been described. On the contrary, the fixed contact 13 is provided above the left inner wall of the case 11 and the contact portion 15H is in contact with the fixed contact 13 and electrically connected in advance. The present invention can be implemented as a so-called push-on type switch in which the movable contact 15 is electrically disconnected from the fixed contact 13.
A second embodiment of the present invention will be described, particularly with respect to the second and third aspects of the present invention.
In addition, the same code | symbol is attached | subjected to the part of the structure same as the structure of Embodiment 1, and detailed description is abbreviate | omitted.
FIG. 5 is a sectional view of a lever switch according to a second embodiment of the present invention, in which a common contact 12A is provided on the lower inner wall of the case 21 and a fixed contact 13A is provided on the left inner wall adjacent thereto. However, it is the same as in the case of Embodiment 1 that it is implanted and fixed by insert molding or the like, but the common contact 12A is provided at the center of the lower inner wall of the case 21.
An opposing support protrusion 21A is formed in the vicinity of the common contact 12A, and an opening 21B is provided in the center of the upper side wall facing the common contact 12A. An intermediate shaft of the lever 14 is provided on the central support shaft 21C. The shaft hole 14A, which is a part, is rotatably held.
Note that the movable contact 15 is housed in the case 21 with the bent portion 15A slightly bent, or the fixed portion 15F is press-fitted and fixed between the common contact 12A and the support protrusion 21A, and the second arm portion. The contact point 15H at the tip of 15G is in elastic contact with the left inner wall of the case 21 as in the case of the first embodiment.
Then, the common contact 12A and the fixed contact 13A of the lever switch having such a structure are connected at the lower end of the contact by a connecting portion (not shown) as shown in the partial sectional view of FIG. In the case of a switch having the configuration shown in FIG. 5, for example, in the case of a switch having the configuration shown in FIG. 5, the insulating resin case is formed after the cutting portion 12C is cut. 21 is insert-molded and fixed.
In this case, since the fixed contact 13B is connected to and integrated with the common contact 12A by the cutting part 12D, the fixed contact 13B is not used as a fixed contact with which the contact part 15H of the movable contact 15 contacts or separates, but is used as the common contact 12A. It is done.
Further, in the state of FIG. 6A, when the cutting portion 12D is cut and then insert molded, as shown in FIG. 6B, the fixed contact 13A is connected to the common contact 12A by the cutting portion 12C. It is integrally planted and fixed to the case 21.
Then, using this case, as shown in the cross-sectional view of FIG. 7, the lever 14 and the movable contact 15 are combined in the left and right direction opposite to FIG. 5, and the contact portion 15H of the movable contact 15 is connected to the right inner wall of the case 21. By making them elastically contact with each other, it is possible to provide a lever switch in which the operation direction of the lever 14 is different while the constituent members remain the same.
In the above configuration, when the operation portion 14C of the lever 14 is rotated downward with a predetermined force, the movable contact 15 pressed by the drive portion 14B near the bent portion 15A of the first arm portion 15B is The contact part 15H is pivotally slid on the left inner wall and the right inner wall of the case 21 with the bent part 15C as a fulcrum, and the electric contact between the common contact 12A and the fixed contacts 13A and 13B via the movable contact 15 is achieved. The connection is the same as in the first embodiment.
As described above, according to the present embodiment, the common contact 12A is provided at the center of the lower inner side wall of the case 21, the opening 21B is provided at the center of the upper side wall facing the common contact 12A, and the lever 14 is provided at the center of the opening 21B. Since the configuration of the switch is symmetrical by holding the intermediate shaft portion so as to be rotatable, the same can be achieved by changing the position of the fixed contacts 13A and 13B and the combination direction of the lever 14 and the movable contact 15. It is possible to form two types of lever switches with different operating directions of the levers by the constituent members.
Further, as shown in the partial cross-sectional views of FIGS. 8A and 9A, the common contacts 12F and 12G, the left and right fixed contacts 13C and 13D, and the fixed contacts 13F and 13G are short-circuited to be integrated, and FIG. As shown in FIG. 9 (b) and FIG. 9 (b), if this is insert-molded and fixed so that the short-circuit portion is embedded in the back bottom wall of the case 21, the left and right adjacent to the common contacts 12F and 12G Since the fixed contacts 13C and 13D and the fixed contacts 13F and 13G are formed on the inner side wall, and the configuration of the case 21 in this state is completely symmetrical, the combination direction of the lever 14 and the movable contact 15 is determined. Two types of lever switches with different operating directions of the lever 14 can be obtained simply by changing them.
As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize a lever switch that can obtain stable contact of contacts immediately after the contacts are brought into contact with each other during operation.
FIG. 1 is a cross-sectional view of a lever switch according to a first embodiment of the present invention. FIG. 2 is an exploded perspective view of the lever switch. FIG. 3 is a cross-sectional view of the lever switch. 5 is a sectional view of a lever switch according to a second embodiment of the present invention. FIG. 6 is a partial sectional view of the lever switch. FIG. 7 is a sectional view of the lever switch according to another embodiment. 9] Partial sectional view [Fig. 10] Cross-sectional view of a conventional lever switch [Fig. 11] Cross-sectional view during the same operation [Explanation of symbols]
11, 18, 21 Case 11A, 21A Support protrusion 11B, 18B, 21B Opening 11C, 18C, 21C Support shaft 12, 12A, 12F, 12G Common contact 12C, 12D Cutting part 13, 13A, 13B, 13C, 13D, 13F , 13G, 19 Fixed contact 14, 20 Lever 14A, 20A Shaft hole 14B Drive unit 14C Operation unit 15 Movable contact 15A Bending unit 15B First arm unit 15C Bending unit 15D Contact unit 15E Abutting unit 15F Fixed unit 15G Second arm Part 15H Contact part 16 Cover
A common contact is provided on one inner side wall, and a fixed contact is provided on the inner side wall adjacent thereto, and a supporting protrusion is formed in the vicinity of the common contact, and an opening is formed on the side wall facing the common contact or the fixed contact. A box-shaped case with an open front and an intermediate shaft portion are rotatably held in the opening portion of the case, and a drive portion at one end is housed in the case, and an operation portion at the other end is accommodated in the case. The lever that protrudes outward from the opening and the middle bent part is housed in the case with a slight bending, and is substantially U-shaped at the tip of the first arm part that extends from one end of the bent part. A fixed fixing part is press-fitted and fixed between the common contact of the case and the support projection, the drive part of the lever abuts near the bent part of the first arm part, and the second arm part extends from the other end Contact point at the tip is the fixed contact of the case or its inner wall Bullet substantially V-shaped lever switch comprising a resilient sheet metal movable contact in contact.
A common contact is provided at the center of the inner wall, a fixed contact is provided on at least one of the inner walls adjacent thereto, and an opening is provided at the center of the side wall facing the common contact of the case. The lever switch according to claim 1, wherein the shaft portion is rotatably held.
The lever switch according to claim 2, wherein fixed contacts are provided on the left and right inner walls adjacent to the common contact, and the two fixed contacts are short-circuited in the case.
JP2000113741A 2000-04-14 2000-04-14 Lever switch Expired - Lifetime JP4019601B2 (en)
EP20010919927 EP1195787B1 (en) 2000-04-14 2001-04-13 Lever switch
US10/018,403 US6559401B2 (en) 2000-04-14 2001-04-13 Lever switch
DE2001614742 DE60114742T2 (en) 2000-04-14 2001-04-13 Rocker switch
TW90108889A TW493189B (en) 2000-04-14 2001-04-13 Lever switch
JP2001297660A JP2001297660A (en) 2001-10-26
JP4019601B2 true JP4019601B2 (en) 2007-12-12
JP2000113741A Expired - Lifetime JP4019601B2 (en) 2000-04-14 2000-04-14 Lever switch
JP5921269B2 (en) * 2012-03-14 2016-05-24 株式会社日立製作所 Switchgear
FR2603420B1 (en) * 1986-08-27 1993-05-14 Telemecanique Electrique Electrical appliance provided with a manual control handle with indication of "on" and "off" positions
JPH0855538A (en) 1994-08-11 1996-02-27 T K R:Kk Detecting switch
2000-04-14 JP JP2000113741A patent/JP4019601B2/en not_active Expired - Lifetime
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TW493189B (en) 2002-07-01 Lever switch
KR20030088379A (en) 2003-11-19 Switching device
2007-10-05 R151 Written notification of patent or utility model registration
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