JP3682858B2 - switch - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a switch, and more particularly to a switch for selectively attaching an auxiliary terminal having a shape and structure necessary for a fixed contact terminal piece.
[0002]
[Prior art]
Generally, a switch is completed in a state in which a specific fixed contact terminal corresponding to the use and purpose of use of the switch is incorporated.
[0003]
[Problems to be solved by the invention]
However, there is a case where it is requested that the switch body is used in common and the switch is screwed and used, or soldered or other connections are used. When the configuration of the switch body itself is complex and large, it is not always possible to manufacture switches corresponding to a wide variety of applications and usage purposes in response to orders.
The present invention provides a switch that solves the above-described problems by adopting a configuration in which an auxiliary terminal is selectively attached to a fixed contact terminal piece of the switch.
[0004]
[Means for Solving the Problems]
Claim 1: The case 1 and the sleeve 3 covering the case are provided, and the common fixed contact terminal piece 61 and the fixed contact terminal piece 7 which are inserted and protruded through the fixed contact piece fitting hole 14 of the bottom wall 12 of the case 1 are provided. And a common contact 62 attached and fixed to the upper end of the common fixed contact terminal piece 61, a swing contact body 51 having the lower surface of the middle portion in the length direction engaged with the common contact 62, and the plunger insertion A bias spring 45 and a plunger 43 are assembled in the hole 44 in this order, and the lever 4 is provided on the upper surface of the swing contact main body 51 to engage the tip of the plunger 43. The common fixed contact terminal piece 61 and the fixed contact terminal piece 7 A switch having separate auxiliary terminals 9 and 9 'to be combined with each other was formed.
[0005]
The switch according to claim 1 is the switch according to claim 1, wherein the auxiliary terminal is one selected from a screw-type auxiliary terminal 9, a solder-type auxiliary terminal 9 ', a tab terminal or a PC terminal. Configured.
A third aspect of the present invention is the switch according to any one of the first and second aspects, further comprising a brush 63 made of a spring metal plate and erected on both sides of the contact piece 633. Then, a horizontal portion 610 is formed at the upper end portion of the common fixed contact terminal piece 61, and the brush 63 and the common contact 62 are incorporated in this order in the horizontal portion 610 to constitute a switch in which the three members are integrated.
[0006]
Further, according to a fourth aspect of the present invention, in the switch according to any one of the first to third aspects, the sleeve 3 includes a mold portion 34 that is formed to hang from the attachment portion 33, and the tip portion of the mold portion 34 is provided. The switch was configured to engage the common fixed contact terminal piece 61 and the fixed contact terminal piece 7.
Further, in the switch according to claim 5, the sleeve 3 includes a flange portion 35 that forms the opening portion 32 thereof, and is shallowly opposed to the inner surface of the sleeve 3 below the flange portion 35. A groove is formed, and a bearing portion 350 is formed between the shallow groove and the tip of the ridge 10 protruding from the inner surface of the side wall 11 of the case 1, and the pivot 40 of the lever 4 is fitted to the bearing portion 350. Configured switch.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the examples of FIGS. 1 is a diagram showing a partial longitudinal section of the switch, and FIG. 2 is a diagram showing a partial longitudinal section perpendicular to FIG.
Reference numeral 1 denotes a reference numeral indicating the entire case of the switch. The case 1 is made of a synthetic resin material and includes a side wall 11 and a bottom wall 12. Reference numeral 13 denotes a step formed at the upper end of the side wall 11. Reference numeral 14 denotes a fixed contact piece fitting hole through which the fixed contact terminal piece 7 and the common fixed contact terminal piece 61 are inserted. On the lower surface of the bottom wall 12, an anti-rotation projection 121 is formed in a hanging manner corresponding to the fixed contact piece fitting hole 14. Reference numeral 10 denotes a protrusion that protrudes upward from the inner surface of the side wall 11.
[0008]
Reference numeral 3 denotes a sleeve made of a synthetic resin material. The sleeve 3 includes a holding hole 31 for tilting and holding the lever 4 which will be described later, an opening portion 32 for allowing the lever to tilt, a mounting portion 33 for the case 1, and a mold portion 34 formed depending on the mounting portion 33. Become. Reference numeral 35 denotes a flange portion, which forms a shallow groove facing the inner surface of the sleeve 3 on the lower side of the flange portion 35, and the distal end portion of the protruding ridge 10 that protrudes from the shallow groove and the inner surface of the side wall 11. The bearing part 350 is comprised between the two. Reference numeral 30 denotes an O-ring that seals the inside of the switch.
[0009]
Reference numeral 4 denotes a lever which is an operation member. The lever 4 includes a rod-shaped operation portion 41, a rotating fitting portion 42 held in the holding hole 31 of the sleeve 3, a plunger insertion hole 44 formed in the lower end portion of the operation portion 41, and a pivot 40 that supports the entire lever 4. Consists of. A bias spring 45 and a plunger 43 are incorporated in the plunger insertion hole 44 in this order.
Reference numeral 51 denotes a swing contact main body. The swing contact main body 51 has a movable contact 50 fixed to the lower surface of the front end portion, and a bent end portion 521 at the rear end portion.
[0010]
Referring to FIG. 3, the fixed contact terminal piece 7 is fixed by protruding through a fixed contact piece fitting hole 14 formed in the bottom wall 12 of the case. The upper end portion of the fixed contact terminal piece 7 is a contact carrying piece 72 that is bent horizontally and fixed to the inner surface of the bottom wall 12. A contact through hole 721 for fixing the fixed contact terminal piece 7 is formed in the contact carrying piece 72. 711 is a connection round hole, 712 is a side caulking cutout, and 713 is a lower caulking cutout.
Referring to FIG. 4, reference numeral 61 denotes a common fixed contact terminal piece. The common fixed contact terminal piece 61 constitutes a support portion that supports an intermediate portion of the swing contact main body 51 from below. That is, the common fixed contact terminal piece 61 has its upper end bent at a right angle to form a horizontal portion 610 to which the common contact 62 is attached. The common contact 62 is attached to the horizontal portion 610 by forming a notch 611 and a square hole 612 on the horizontal portion 610 side, and corresponding to the locking piece 621 and the square hole 612 corresponding to the notch 611 on the common contact 62 side. This is done by forming a hanging piece 622. 63 is a brush composed of a spring-like metal plate, and contact pieces 633 are provided upright from both sides. The brush 3 is interposed between the common contacts 62 attached to the horizontal portion 610. The rear notch 631 of the brush 63 corresponds to the locking piece 621 of the common contact 62 and the notch 611 of the horizontal part 610, and the front notch 632 corresponds to the drooping piece 622 and the square hole 612. The common fixed contact terminal piece 61 is also formed with a connection round hole 613, a side caulking notch 614, and a lower caulking notch 615 corresponding to the fixed contact terminal piece 7. Reference numeral 623 denotes an upright support notch.
[0011]
The screw-type auxiliary terminal will be described with reference to FIG. A screw hole 911 is formed in an intermediate portion of the main body 90 of the screw-type auxiliary terminal 9, and a protrusion fitting notch 912 in which a rotation stopper protrusion 121 formed to hang from the bottom wall 12 is fitted to an upper end portion thereof. The lower caulking piece 913 is formed at the lower end portion thereof, and the side caulking piece 914 is formed at both upper end side portions thereof.
The soldering type auxiliary terminal will be described with reference to FIG. A screw hole 911 ′ is formed in the upper half of the main body 90 ′ of the soldering type auxiliary terminal 9 ′, and a protrusion that fits a non-rotating protrusion 121 formed on the bottom wall 12 at the upper end thereof. A fitting notch 912 ′ is formed, a lower crimping piece 913 ′ is formed in the lower half of the fitting notch 912 ′, a side crimping piece 914 ′ is formed on both sides of the upper end, and a conductor insertion hole is formed in the vicinity of the lower end. 915 'is formed.
[0012]
Here, how to assemble the above switches will be described.
The brush 63 and the common contact 62 are incorporated in this order into the horizontal portion 610 of the common fixed contact terminal piece 61, and the locking piece 621 and the hanging piece 622 are caulked to the horizontal portion 610 to integrate the three members. The fixed contact 73 is fixed to the contact carrying piece 72 of the fixed contact terminal piece 7. The common fixed contact terminal piece 61 and the fixed contact terminal piece 7 are inserted and protruded through the fixed contact piece fitting hole 14 of the bottom wall 12. Then, the lower surface of the swing contact main body 51 is engaged with the lower surface of the support contact notch 623 of the common contact 62. Here, the lever 4 in which the bias spring 45 and the plunger 43 are assembled in this order in the plunger insertion hole 44 is engaged with the upper surface of the swing contact main body 51 and the tip of the plunger 43 is engaged, and the pivot 40 is formed so as to protrude from the inner surface of the side wall 11. In a state in which the sleeve 3 is positioned at the upper end portion of the protrusion 10, the sleeve 4 is inserted into the lever 4 and engaged with the case 1, and is attached by the fixing member 130. In this case, the O-ring 30 is interposed between the fitting portion 42 and the flange portion 35, and the pivot 40 is positioned in the shallow groove constituting the bearing portion 350 to engage the sleeve 3 with the case 1. In the assembled state, the tip end portion of the mold portion 34 that is suspended from the attachment portion 33 is engaged with the common fixed contact terminal piece 61 and the fixed contact terminal piece 7, thereby preventing the terminal piece from floating or coming off. be able to. Then, when the pivot 40 of the lever 4 is fitted to the bearing portion 350 including the shallow groove, the lever 4 rotates with only the pivot 40 as a rotation axis.
[0013]
The switch assembled as described above is in a contact open state. Here, when the lever 4 is operated and rotated around the pivot 40, the plunger 43 slides while being pressed against the upper surface of the swing contact body 51 by the bias spring 45, and the tip thereof is the swing contact body. 51 and the swing contact main body 51 are reversed at the moment of passing through the engaging portion of the support notch 623 of the common contact 62. As a result, the movable contact 50 engages and contacts the fixed contact 70 , and this state is closed and held by the bias spring 45 via the plunger 43.
[0014]
The switch shown in FIGS. 1 and 2 is an embodiment in which the screw type auxiliary terminal 9 illustrated in FIG. 5 is attached to the common fixed contact terminal piece 61 and the fixed contact terminal piece 7. 7 and 8 is an embodiment in which the common fixed contact terminal piece 61 and the fixed contact terminal piece 7 are attached with a soldering type auxiliary terminal 9 'illustrated and described with reference to FIG.
[0015]
【The invention's effect】
As described above, according to the present invention, by adopting a configuration in which the auxiliary terminal is selectively attached to the fixed contact terminal piece of the switch, the fixed contact terminal having a shape and structure required by using the switch body in common A switch equipped with can be immediately prepared and supplied. As examples of auxiliary terminals, screw type auxiliary terminals and solder type auxiliary terminals are illustrated and described, but tab terminals used by being inserted and fitted into square-shaped female terminals made of flat metal strips. Alternatively, an auxiliary terminal having a shape structure other than these, such as a PC terminal inserted into a through hole of a printed wiring board and connected to an electric circuit, can be selectively attached to the fixed contact terminal piece to meet the request. After all, by preparing a switch body with a fixed contact terminal piece and various types of auxiliary terminals, and adopting a configuration that selectively attaches the auxiliary terminal to the fixed contact terminal piece, it is possible to order switches for a variety of uses and intended purposes. Can respond immediately.
[0016]
Then, the brush 63 and the common contact 62 are incorporated in this order into the horizontal portion 610 of the common fixed contact terminal piece 61, and the locking piece 621 and the hanging piece 622 are caulked to the horizontal portion 610 to facilitate integration of the three parties. Can be implemented. As a result of this integration, the contact piece 633 that stands upright from both sides of the brush 63 is elastically always in good electrical contact with both sides of the swing contact main body 51 so that almost no arc is generated between them. Since the brush 63 composed of a spring metal plate is firmly fixed between the common contact 62 and the common fixed contact terminal piece 61 in which the main body 51 is in electromechanical contact engagement, the swing contact main body 51 and The common fixed contact terminal piece 61 is always electrically connected well.
[0017]
Further, in the assembled state, the tip end portion of the mold portion 34 formed to hang down from the attachment portion 33 of the sleeve 3 is engaged with the common fixed contact terminal piece 61 and the fixed contact terminal piece 7 to prevent floating or coming off. Can do. Conventionally, the mold part 34 is composed of a plurality of independent parts, and the manufacture and storage of these parts and the assembly in the switch assembly have been complicated operations. However, in the present invention, the mold part 34 is integrally molded when the sleeve 3 is molded. By manufacturing, these complicated operations can be solved at once.
[Brief description of the drawings]
FIG. 1 is a diagram showing a partial cross section in the vertical direction of an embodiment.
FIG. 2 is a view showing a longitudinal section perpendicular to the section of FIG. 1;
FIG. 3 is a diagram illustrating a fixed contact terminal piece.
FIG. 4 is a diagram illustrating a common fixed contact terminal piece.
FIG. 5 is a diagram illustrating a screw-type auxiliary terminal.
FIG. 6 is a diagram illustrating a soldering type auxiliary terminal.
FIG. 7 is a partial cross-sectional view in the vertical direction according to another embodiment.
8 is a view showing a longitudinal section perpendicular to the section of FIG. 7;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 3 Sleeve 12 Bottom wall 14 Fixed contact piece fitting hole 61 Common fixed contact terminal piece 7 Fixed contact terminal piece 62 Common contact 51 Swing contact main body 44 Plunger insertion hole 45 Bias spring 43 Plunger 4 Lever 9, 9 'auxiliary terminal

Claims (5)

A case in which a rotation projection 121 is suspended from the bottom wall 12 and a sleeve covered by the case ;
The lower end portion is inserted into and protruded through the fixed contact piece fitting hole of the bottom wall of the case , side caulking cutouts 614 and 712 are formed on both sides, and lower caulking cutouts 615 and 713 are formed below the lower caulking cutouts. A common fixed contact terminal piece 61 and a fixed contact terminal piece 7 in which connection round holes 613 and 711 are formed ;
The common fixed contact terminal piece and the fixed contact terminal piece are each provided with a common contact 62 and a fixed contact 73 which are fixedly attached to the upper end portions of the fixed contact terminal piece ,
The lower surface of the longitudinal intermediate portion provided with a rocking contact body provided with a movable contact 50 at the tip portion is engaged with the common contact,
Incorporated into the plunger insertion hole of the bias spring and the plunger in this order comprises a lever engaging the tip of the plunger to the upper surface of the swing contact body,
Corresponding to the side caulking pieces 914 'and 914 and the lower caulking pieces 913' and 913 fitted to the side caulking notches 614 and 712 and the lower caulking notches 615 and 713, and the fixed contact piece fitting holes Separate auxiliary terminals attached to both the common fixed contact terminal piece and the fixed contact terminal piece, each having a protrusion fitting notch 912 formed on the bottom wall for fitting to the non-rotating protrusion 121. 9 ', 9
The auxiliary terminal is in contact with both the common fixed contact terminal piece and the fixed contact terminal piece,
Further, the side crimping pieces 914 'and 914 on both sides of these auxiliary terminals are fitted and folded back into the side crimping cutouts 614 and 712, and the terminal pieces are crimped.
Lower caulking pieces 913 'and 913 integral with these auxiliary terminals are fitted and folded into the lower caulking notches 615 and 713 and caulked to the terminal pieces,
A switch characterized in that the anti-rotation projection 121 is fitted in a projection fitting notch 912 formed at the upper end of these auxiliary terminals . The switch according to claim 1, wherein
The auxiliary terminal is a switch selected from a screw-type auxiliary terminal, a solder-type auxiliary terminal, a tab terminal, or a PC terminal. In the switch according to any one of claims 1 and 2,
It is composed of a spring metal plate and comprises a brush that stands up against both sides of the contact piece,
A switch characterized in that a horizontal portion is formed at the upper end portion of the common fixed contact terminal piece, and the three portions are integrated by incorporating the horizontal portion of the brush and the common contact in this order. In the switch according to any one of claims 1 to 3,
The sleeve includes a mold part that is suspended from the attachment part, and the tip of the mold part is engaged with the common fixed contact terminal piece and the fixed contact terminal piece. The switch according to claim 4, wherein
The sleeve has a flange that forms the opening,
A shallow groove is formed facing the inner surface of the sleeve on the lower side of the flange portion, and a bearing portion is formed between the shallow groove and a tip portion of a protrusion formed to protrude from the inner surface of the side wall of the case,
A switch characterized by fitting a pivot of a lever to a bearing part.

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