JPH0633327U - Operating position variable switch - Google Patents

Abstract

(57) [Summary] [Purpose] To enable adjustment of the operating position of the switch so that high mounting accuracy is not required. [Structure] Fixed terminal member fixed to the switch case (1) and the case (1) and having a contact surface (2c) inside the case (1)
(2) and the case (1) are rotatably supported by the case (1).
Rotating member formed with an operating part (3a) that can be operated from outside
The moving member (4) which is engaged with the screw portion (3b) of the rotating member (3) and can be moved in the case (1) by rotating the rotating member (3) and the contact portion (3). 33c) is attached to the moving member (4) so that it can move in the direction of coming into contact with or separating from the contact surface (2c) of the terminal member (2), and the contact portion (33c) becomes the contact surface (2c).
The movable contact member (33) urged in a direction away from the contact member (33) and the contact member (33) when pressed toward the contact member (33) side.
An operating member (5) for bringing the contact surface (2c) into contact with the contact surface (2c).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an operating position variable switch, and more particularly to a switch that opens and closes a circuit by operating an operating member and whose operating position can be adjusted.

[0002]

[Prior art]

 Conventionally, a micro switch has been known as a switch that opens and closes a circuit by operating an operating member.

[0003]

[Problems to be solved by the device]

 However, in the case of the micro switch, since the operating position is almost constant and cannot be adjusted, there is a problem that high mounting accuracy is required.

An object of the present invention is to solve the above problems, to provide an operating position variable switch that can adjust the operating position and does not require high mounting accuracy.

[0005]

[Means for Solving the Problems]

 The variable position switch according to the present invention includes a switch case, a fixed terminal member fixed to the switch case and having a contact surface inside the switch case, and a rotatably supported by the switch case. And a screw member of the rotating member is engaged with the rotating member, which is formed with an operating portion that can be operated from outside the switch case, and is moved inside the switch case by rotating the rotating member. The movable member and the movable contact are attached to the movable member so that the contact portion can move in a direction in which the contact portion contacts and separates from the contact surface of the fixed terminal member, and the movable contact is biased in the direction in which the contact portion separates from the contact surface. The switch case is supported so that it can move in almost the same direction as the moving member and the moving member. And an operating member for bringing the portion into contact with the contact surface.

The switch case, the rotating member, or the moving member may be provided with operating position visualizing means.

A plurality of recesses are formed on the circumference around the center of rotation of the rotating member, and the switch case is held by the switch case by being biased by the elastic member and fitted into the recesses. A member may be provided.

[0008]

[Action]

 When the operating member moves to the movable contact member side, the operating member presses the contact member to bring the contact portion of the operating member into contact with the contact surface of the fixed terminal member, and the circuit is closed.

When the operating member is operated from outside the switch case to rotate the rotating member, the moving member engaged with the screw portion of the rotating member moves, and the contact member attached to the moving member also moves. . When the contact member moves, the distance between the operation member and the contact member changes, and the position at which the operation member presses the contact member to bring the contact portion into contact with the contact surface, that is, the operation position changes.

When the switch case, the rotating member, or the moving member is provided with the operating position visualizing means, the operating position of the switch can be visually confirmed easily.

A plurality of recesses are formed on a circumference around the center of rotation of the rotating member, and the switch case is held by the switch case by being biased by an elastic member and fitted into the recesses. If the member is provided, the rotary member is held at a fixed position after the adjustment of the operating position, and as a result, the moving member is also held at the fixed position, and the operating position of the switch is held constant.

[0012]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show the operating position variable switch in an assembled state, and FIG. 4 shows the switch in a partially disassembled state. In the following description, the upper and lower sides of FIG. 1 are referred to as the upper and lower sides, the left side of the figure is referred to as the front, and the right side is referred to as the rear. The left and right as seen from the front, that is, the left and right in FIG.

The switch is provided with a switch case (1), and the case (1) is provided with two fixed terminal members (2), a rotating member (3), a moving member (4) and an operating member (5). Has been.

The case (1) is divided into a case body (6) and a cover (7) detachably attached to the case body (6). The case body (6) and the cover (7) are molded by, for example, plastic.

The case body (6) has a hollow rectangular parallelepiped shape with an open top surface. The front wall (6a) of the case body (6) is slightly higher than the left and right side walls (6b) and the rear wall (6c), and is located on the left and right ends of the front wall (6a) extending to the left and right sides of the side wall (6b). Each mounting hole (8) is formed. A circular operation member guide hole (9) is formed in a portion of the front surface of the front wall (6a) near the center in the left-right direction, the circular operation member guide hole (9) penetrating the front wall in the front-rear direction. The part around the guide hole (9) of the front wall (6a) is bulged forward in a circular shape. In addition, a positioning notch (10) is formed in a portion of the front wall (6a) except for the left and right sides of the rear edge of the upper surface.

A shallow groove portion (11) having a wide front-rear width is formed at the center of the outer surface of both side walls (6b) of the case body (6) in the left-right direction over the entire height. A relatively short locking projection (12) is integrally formed at the center of the bottom surface (11a) of these groove portions (11). The lower part of this projection (12) projects almost at a right angle from the bottom surface (11a) of the groove part (11), and the upper part is inclined so that it becomes shorter as it goes upward.

An upward positioning protrusion (13) is integrally formed on the upper surface of the rear wall (6c) of the case body (6) except for the left and right sides. Between the left and right side walls (6b) of the bottom wall (6d) of the case body (6), the operation member guide part (14) is located in the front part and the moving member guide part (15) is located in the rear part. Each is integrally formed. The upper surface of the operating member guide portion (14) is located slightly lower than the lower edge of the operating member guide hole (9), and the upper surface of the moving member guide portion (15) is slightly lower than the upper surface of the operating member guide portion (14). In position. Between the left and right moving member guide parts (15), the rotating member guide part (16) slightly shorter than the moving member guide part (15) on the bottom wall (6d) slightly in front of the rear wall (6c). Is integrally formed, and between the guide part (16) and the rear wall (6c), an arc-shaped rotation centering on the longitudinal axis near the center of the case body (6) in the left-right direction is centered. A member guide groove (17) is formed.

Between the left and right guide members (14) and (15), two rectangular shallow recesses (18) are formed symmetrically on the upper surface of the bottom wall (6d) slightly forward. Long slits (19) are formed in the front and rear sides of the outer edges of the recesses (18) in the front-rear direction so as to vertically penetrate through the bottom wall (6d). The peripheral portions of these slits (19) are bulged downward according to the shape of the slits (19). The lower portions of these slits (19) are slightly widened outward in the left-right direction, and a step portion (19a) is formed between a narrow upper portion and a wide lower portion.

The cover (7) includes a horizontal rectangular top wall (7a) and a rectangular hanging wall (7b) extending vertically downward from the left and right edges of the top wall (7a) excluding the front and rear sides. It consists of and. Positioning projections (20) slightly protruding forward are integrally formed on the front wall (7a) of the cover (7) except for the left and right ends. A rectangular notch (21) is formed in the part of the top wall (7a) excluding the left and right sides of the rear edge.The front wall of the notch (21) has a top wall (7a) in the front-rear direction. A cylindrical portion (22) having an axis of and having a rear end opened is integrally formed. On both left and right sides of the lower surface of the top wall (7a), an operation member guide portion (23) is integrally formed at the front portion, and a moving member guide portion (24) is integrally formed at the rear portion. A rectangular locking opening (25) is formed in the center of the hanging wall (7b) on both sides of the cover (7).

The cover (7) is fixed to the case body (6) by hanging the hanging walls (7b) on both sides above the groove portions (11) on both sides of the case body (6) and sliding it downward. To be done. When the hanging wall (7b) is fitted into the groove (11) and slid downward, the lower end of the hanging wall (7b) hits the inclined surface above the locking projection (12) and is elastically deformed outward, When the hanging wall (7b) is slid further downward, the lower part of the hanging wall (7b) passes through the protrusion (12), and it projects into the locking opening (25) of the hanging wall (7b). (12) is fitted and the hanging wall (7b) returns to its original state due to the elastic force. When the hanging wall (7b) returns to its original state, the lower end of the protrusion (12) hits the lower edge of the opening (25) to prevent the hanging wall (7b) from moving upwards. 7) is fixed to the case body (6). When the case (1) is assembled in this manner, the lower surface of the top wall (7a) of the cover (7) contacts the upper surfaces of the side wall (6b) and the rear wall (6c) of the case body (6), The protrusion (20) at the front end of the top wall (7a) fits into the notch (10) at the upper edge of the front wall (6a), and the protrusion (13) at the upper surface of the rear wall (6c) is located at the rear edge of the top wall (7a). The cover (7) is positioned by fitting into the rear end of the notch (21). Further, the front end of the top wall (7a) contacts the upper rear surface of the front wall (6a), and the upper surface of the front wall (6a) and the upper surface of the top wall (7a) are substantially flush with each other.

From this state, the cover (7) can be detached from the case body (6) by spreading the hanging walls (7b) on both sides by hand and removing the protrusions (12) from the opening (25). .

The two terminal members (2) are attached to the left and right recesses (18) and the slit (19) of the bottom wall (6d) of the case body (6).

The terminal member (2) is made of metal, and has a horizontal rectangular plate-shaped contact piece (2b) and a rectangular terminal piece extending vertically downward from the front-rear center portion of one side edge thereof. The upper surface of the contact piece portion (2b) serves as the contact surface (2c). A cut-and-raised portion (26) is formed at an upper portion of the terminal piece portion (2a) so as to slightly project in a direction opposite to the contact piece portion (2b). Insert the terminal piece (2a) into the slit (19) from above and fit the contact piece (2b) into the recess (18). 19a), thereby fixing the terminal member (2) to the case body (6). When the terminal member (2) is fixed to the case body (6) in this manner, the contact surface (2c) thereof is substantially flush with the upper surface of the bottom wall (6d).

The rotating member (3) is made of plastic and is rotatably supported by the guide groove (17) and the notch (21) of the case (1).

The rotating member (3) is formed by integrally forming a screw portion (3b) extending horizontally forward in the center of the front surface of a disk-shaped operation portion (3a) having a longitudinal axis. The lower part of the operating part (3a) fits into the guide groove (17), and the upper part fits into the notch (21), so that it is rotatably supported by the case. The upper part of the operation part (3a) projects slightly upward from the notch (21), and this part can be manually operated from the outside of the case (1). Further, in order to facilitate the operation, it is desirable that appropriate irregularities or the like be formed on the outer peripheral surface of the operation portion (3a).

A plurality of, for example, eight circular holes (recesses) (27) penetrating in the front-rear direction are formed on one circle near the outer circumference of the operating portion (3a) of the rotating member (3) at equal intervals. Has been done. A metal ball (28) as a holding member for holding the rotating member (3) is inserted in the cylindrical portion (22) of the cover (7) so as to be movable back and forth, and the ball (28) and the cylindrical shape are formed. A compression coil spring (29) as an elastic member is housed between the bottom of the portion (22) and the ball (28) in the front end of the hole (27) of the rotating member (3) to press it. . On the outer side of the hole (27) on the rear surface of the operation portion (3a), numbers 1 to 8 are sequentially written in a clockwise direction when viewed from the rear. These numbers form an operating position visual confirmation means for visually confirming the operating position of the switch.

The moving member (4) is made of plastic in the shape of a rectangular parallelepiped block, and is formed on the inner surfaces of both side walls (6b) of the case body (6) and the upper surface of the moving member guide portion (15) and the moving member guide portion of the cover (7). It is supported in the case (1) so that it can be moved in the front-back direction by being guided by the lower surface of the (24). The moving member (4) is formed with a female screw portion (30) reaching the rear end surface from the front portion, and the female screw portion (30) and the screw portion (3b) of the rotating member (3) are engaged with each other. Further, the moving member (4) is formed with a spring receiving hole (31) which reaches the front end surface slightly before the female screw portion (30).

A relatively shallow rectangular recess (32) is formed on the lower surface of the moving member (4) excluding the left and right sides and the rear end, and its front part is slightly deeper than the other parts. There is. Then, the movable contact member (33) made of metal is attached to the portion of the recess (32). The contact part (33) is a horizontal rectangular plate-shaped base part (33a), which is integrally formed with contact piece parts (33b) extending forward on both left and right front ends of the base part (33a). Is fixed to the bottom of the shallow part of the recess (32) facing downward. The contact piece part (33b) of the contact member (33) extends forward through the deep part of the recess (32), then is bent downward and extends slightly rearward, and the lower end of the tip is the contact part. It is (33c). The left and right contact parts (33c) correspond to the contact surfaces (2c) of the left and right terminal members (2) respectively, and when the contact piece part (33b) is pressed downward, it elastically deforms downward, When the contact part (33c) contacts the corresponding contact surface (2c) and the pressing force disappears, the contact piece part (33b) deforms upward due to the elastic force, and the contact part (33c) contacts the contact surface (2c). Away from you.

The operation member (5) is made of plastic and is composed of a rectangular parallelepiped block portion (5a) and a shaft portion (5b) extending horizontally from the center portion of the front surface to the front. Then, the shaft part (5b) is inserted into the guide hole (9) of the case body (6) later, and the block part (5a) is inserted into the inner surfaces of both side walls (6b) of the case body (6) and the operation member guide part. It is guided by the upper surface of (14) and the lower surface of the operating member guide portion (23) of the cover (7), and is supported in the case (1) so as to be movable in the front-rear direction. The inclined surface (5c) is formed so that the vertical width becomes smaller toward the front and the bottom of the front portion of the block portion (5a). A spring receiving hole (34) is formed on the rear surface of the block portion (5a) of the operating member (5), and the moving member (34) is formed in the hole (34) and the spring receiving hole (31) on the front surface of the moving member (4). The front and rear ends of a compression coil spring (35) that biases the operating member (5) forward with respect to (4) are fitted.

This switch is assembled by attaching the respective parts to the case body (6) as described above and then fixing the cover (7) to the case body (6) as described above. Then, the parts can be disassembled by removing the cover (7) from the case body (6).

The above-mentioned switch is attached to a desired location such as an apparatus by using the attachment hole (8) of the front wall (6a) of the case (1). Further, the terminal piece portion (2a) protruding downward from the case (1) of the two terminal members (2) is connected to a desired electric circuit.

When no rearward external force is applied to the operating member (5), the operating member (5) has the front end of the block portion (5a) by the spring (35) as shown in FIG. ) Is stopped at the front end position where it abuts the rear surface of the front wall (6a). At this time, the shaft portion (5b) of the operating member (5) projects forward from the case (1), the block portion (5a) is separated from the contact piece portion (33b) forward, and the contact portion (33c) contacts. Far from face (2c). Therefore, the switch is in the open state, and the left and right terminal members (2) are electrically separated.

When the shaft portion (5b) of the operation member (5) is pushed rearward from the outside of the case (1), the block portion (5a) also moves rearward and comes into contact with the inclined surface (5c) at the lower rear portion thereof. Press one side (33b). Then, as shown by the chain line in FIG. 1, when the operating member (5) moves to a certain position (operating position), the contact portion (33c) contacts the contact surface (2c). As a result, the switch is closed, and the left and right terminal members (2) are electrically connected via the contact member (33).

When the backward pressing force of the operating member (5) disappears, the operating member (5) is returned to the front end position by the spring (35), and the switch is opened again.

FIG. 1 shows a state in which the moving member (4) is located at the rearmost position. At this time, the distance between the operating member (5) at the front end position and the contact member (33) is the maximum. , The switch closes when the actuating element (5) has moved to the rearmost position. That is, the operating position of the switch is at the rearmost position.

In the above switch, as described below, the operating portion (3a) is operated from outside the case (1) to rotate the rotating member (3), whereby the operating position is gradually changed. It can be adjusted.

The rotating member (3) is rotated by one pitch of the hole (27) until the ball (28) fits in the hole (27), and is held at that position. Then, when the rotating member (3) rotates, the moving member (4) moves forward or backward due to the engagement of the screw portion (3b) of the rotating member (3) and the female screw portion (30) of the moving member (4). . When the rotating member (3) is rotated counterclockwise when viewed from the rear, the moving member (4) moves forward, and the gap between the operating member (5) and the contact member (33) at the front end position is increased. As it becomes smaller, the operating member (5) presses the contact piece portion (33b) faster, so that the operating position changes to the front. On the contrary, when the rotating member (3) is rotated clockwise when viewed from behind, the moving member (4) moves backward, and the gap between the operating member (5) and the contact member (33) at the front end position is moved. Becomes larger and the operation member (5) delays pressing the contact piece portion (33b), so that the operating position changes later. The operating position of the switch corresponds to the position of the moving member (4) in the front-rear direction, and the position of the moving member (4) in the front-rear direction is proportional to the amount of rotation of the rotating member (3). Further, since the rotating member (3) can be rotated by one pitch of the hole (27), the position of the moving member (4) in the front-rear direction, that is, the operating position of the switch is the hole (2) of the rotating member (3). It can be adjusted by a fixed amount corresponding to 1 pitch of 7). When the rotating member (3) is rotated counterclockwise when viewed from the rear, the number of the hole (27) that appears at the top of the case (1) increases in order, and the rotating member (3) is moved backward. When turned clockwise when viewed from above, the above numbers become smaller in order. Further, since the turning amount of the turning member (3) corresponds to the operating position of the switch, the operating position can be confirmed by looking at this number.

Therefore, if this switch is used, the operating position can be adjusted as described above after mounting, so that it is not necessary to increase the mounting accuracy of the switch itself. Further, even if it becomes necessary to change the operating position after mounting, the operating position can be changed as described above, and it is not necessary to change the mounting position of the switch itself. Then, after adjusting the operating position, the ball (28) fits into the hole (27) and the rotating member (3) is held in a fixed position, so that the moving member (4) is also held in a fixed position and the switch is switched during use. The operating position of does not change.

The configuration of each part of the operating position variable switch is not limited to that of the above-described embodiment, and can be appropriately changed within the scope of the present invention.

For example, by providing only one fixed terminal member and connecting it to an electric circuit, and by providing only one contact portion on the movable contact member and connecting it to the electric circuit, one fixed terminal member is provided. The electric circuit may be opened and closed between the contact surface of the member and one contact portion of the movable contact member.

Further, for example, a part of the moving member is exposed from the opening formed in the switch case, and a scale is provided on the surface of the switch case at this portion, and a mark indicating the scale is provided on the exposed surface of the moving member. Thus, the operating position visual recognition means may be configured. Further, the opening portion formed in the switch case may be covered with a transparent plate, and the transparent plate may be provided with a scale.

[0043]

[Effect of device]

 According to the switch of this invention, as described above, the operating position can be adjusted by rotating the rotating member from the outside of the case. Therefore, it is not necessary to improve the mounting accuracy of the switch, and the operating position can be changed after the switch is mounted without changing the mounting position of the switch.

Since the switch case, the rotating member, or the moving member is provided with the operating position visualizing means, the operating position of the switch can be visually confirmed easily.

A plurality of recesses are formed on the circumference around the center of rotation of the rotating member, and the switch case is held by the switch case by being biased by the elastic member and fitted into the recesses. Since the member is provided, the operating position of the switch can be kept constant after the operating position is adjusted, and the operating position of the switch does not change during use.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an operating position variable switch showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

FIG. 3 is a view taken along line BB of FIG.

4 is a partially omitted exploded perspective view of the switch of FIG. 1. FIG.

[Explanation of symbols]

 (1) Switch case (2) Fixed terminal member (2c) Contact surface (3) Rotating member (3a) Operating part (3b) Screw part (4) Moving member (5) Operating member (27) Circular hole (recess) (28) Ball (holding member) (29) Spring (elastic member) (30) Female thread part (33) Movable contact member (33c) Contact part

Claims (3)

[Scope of utility model registration request] 1. A switch case, a fixed terminal member fixed to the switch case and having a contact surface inside the switch case, and rotatably supported by the switch case, and a screw portion is formed at a portion inside the switch case. And a moving member that is formed with an operating portion that can be operated from outside the switch case, and a moving member that is engaged with the screw portion of the rotating member and that is moved in the switch case by the rotation of the rotating member. A movable contact member that is attached to the moving member such that the contact portion can move in a direction in which the contact portion contacts and separates from the contact surface of the fixed terminal member, and is urged in a direction in which the contact portion separates from the contact surface; The operation member is supported by the switch case so as to move in a direction substantially the same as the moving direction of the switch, and when it moves to the movable contact member side, presses the contact member to bring the contact portion into contact with the contact surface. Operating position variable switch comprises a. 2. The operating position variable switch according to claim 1, wherein an operating position visualizing means is provided on the switch case, the rotating member or the moving member. 3. A holding member for holding a rotating member by forming a plurality of recesses on a circumference around a center of rotation of the rotating member, and the switch case being urged by an elastic member and fitted into the recess to hold the rotating member. The variable operating position switch according to claim 1 or 2, further comprising a member.