JP2023183646A - circuit controller - Google Patents

Abstract

To realize a novel circuit controller for an electric switch machine capable of preventing intrusion of a living thing such as ants and inhibiting occurrence of wear and dust caused by oscillation of a lever as much as possible while securing a space for the oscillation of the lever.SOLUTION: A circuit controller 2 includes a closing member 40 between a lever 22 and a lever projection port 18 of a cover part 12. The closing member 40 is inserted through an oscillation shaft 24 of the lever 22 projecting from a side surface of the cover part 12 to separate an oscillation space 60 of the lever 22 from an inside space 16. The closing member 40 has an upper member 41 and a lower member 42 which are combined to sandwich the lever 22 vertically. Gaps between the upper member 41 and the lower member 42 and between the lever 22 and the oscillation shaft 24 in the vicinity of the oscillation shaft 24 are set to satisfy a prescribed minute gap condition effective to inhibit intrusion of a living thing such as ants and intrusion of dust.SELECTED DRAWING: Figure 1

Description

The present invention relates to a circuit controller for an electric point machine.

A circuit controller for an electric point machine engages a lever (pole reversing lever) protruding from the side of the cover with a lock piece of the switch, and the lever is linked to the operation of the lock piece. This device switches the electric motor circuit and KR (display) circuit of a point machine by swinging.

In conventional circuit controllers for electric point machines, the mechanical part including various contacts is housed in the internal space defined by covering the base with a hollow cover part. The ejection port for ejection was left open. There have been cases of malfunctions caused by organisms such as ants invading the internal space of the device through the gap in the lever protrusion and causing malfunctions.

As a technique to prevent malfunctions caused by biological invasion, for example, there is a technique in which a closing plate is provided to close the gap between the lever and the periphery of the ejection opening, and this closing plate is slid to follow the swinging of the lever ( For example, see Patent Document 1). For example, a closing member made of a rubber-based material or the like is provided between the lever and the periphery of the ejection opening to form a space that allows the lever to operate, and the closing member is placed near the swing shaft through which the lever is inserted. There is a technique for blocking the internal space of the vessel from the outside by contacting and closing the vessel (for example, see Patent Document 2).

Japanese Patent Application Publication No. 2013-193506 JP2015-85880A

In the circuit controller disclosed in Patent Document 1, the closing plate (3) may wear out due to repeated sliding operations of the lever (23). The circuit controller disclosed in Patent Document 2 does not have a closing plate as in Patent Document 1, but since the lever (3) and the closing member (5) are in contact with each other, wear and tear due to sliding between the two may occur. Dust may be generated.

The problem to be solved by the present invention is to develop a new electric transfer system that secures a space for the lever to swing, prevents the invasion of organisms such as ants, and suppresses as much as possible the abrasion and dust generation caused by the swing of the lever. The purpose of this invention is to realize a circuit controller for a machine.

A first invention for solving the above problems is a circuit controller for an electric point machine in which a lever protruding from the side surface of a cover part swings in conjunction with a lock piece to switch a circuit, a closing member through which the swinging shaft of the lever is inserted and separating a swinging space of the lever from an internal space of the circuit controller; and a lower member, and in the vicinity of the swing axis, a gap between the upper member and the lower member, and the lever and the swing shaft is a gap that satisfies a predetermined minute gap condition. be.

A second aspect of the present invention is that in the circuit controller, each of the upper member and the lower member has an expanded portion that contacts a side surface of the cover portion, and the expanded portion of the upper member and the expanded portion of the lower member. is a circuit controller that, in combination, constitutes a continuous expansion section.

A third aspect of the present invention is the above circuit controller, wherein the upper member and the lower member are engaged with the cover part in the combined state in the internal space.

A fourth aspect of the present invention is that in the above-mentioned circuit controller, the lower member includes a planar portion having an upper surface opposite to the lower surface of the lever, and an extending portion extending below the lever along the side surface. and the extension part is a circuit controller having an extension part of the lower member that is longer in the vertical direction than the extension part of the upper member.

The circuit controller of any one of the first to fourth inventions secures a space for the lever to swing, prevents the invasion of organisms such as ants, and further prevents wear and dust generation due to the swing of the lever. It can be suppressed as much as possible.

FIG. 2 is a perspective external view looking down from the front diagonally upper right, showing an example of the configuration of the circuit controller. FIG. 3 is a perspective exploded view showing selected components around the lever and the closure member. FIG. 3 is a diagram showing an example of the configuration around the lever and the closing member, and is a longitudinal cross-sectional view of the lever viewed from the right direction (Y-axis positive direction). FIG. 4 is a diagram in which the lever is not shown in FIG. 3; FIG. 3 is an enlarged plan view showing an example of the configuration around the lever and the closing member.

Hereinafter, embodiments of a circuit controller to which the present invention is applied will be described, but it goes without saying that forms to which the present invention can be applied are not limited to the following embodiments. Note that each drawing shows right-handed orthogonal three axes (X-axis, Y-axis, and Z-axis) that indicate a common direction. The following description will be made assuming that the X-axis plus direction is forward, the X-axis minus direction is rear, the Y-axis plus direction is right, the Y-axis minus direction is left, the Z-axis plus direction is top, and the Z-axis minus direction is bottom.

FIG. 1 is a perspective external view of an example of the configuration of a circuit controller 2 for an electric point machine to which the present invention is applied, looking down diagonally from the front and upper right.
The circuit controller 2 includes a base portion 10, a cover portion 12, and cover mounting screws 14.
The circuit controller 2 defines an internal space 16 by placing a transparent cover part 12 over a base part 10 and screwing the cover part 12 and the base part 10 together with cover mounting screws 14. The internal space 16 houses a mechanism section 20 that reverses the polarity of the motor circuit and the display circuit. A lever 22 that is linked to a lock piece of an electric switch is connected to the mechanism section 20.

The front end portion of the lever 22 (the portion that engages with the lock piece) protrudes from the lever protrusion 18 to the outside of the device. The lever protrusion 18 is a rectangular notch provided at the lower end of the front side of the cover part 12. The rear end of the lever 22 is supported by a vertical swing shaft 24 supported in the internal space 16 . The lever 22 is swingable within a certain range left and right (in the axial direction of the Y-axis), and the circuit controller 2 switches the circuit by swinging the lever 22 in conjunction with the lock piece of the switch machine. .

The circuit controller 2 has a closing member 40 (shown in shading) so as to close off the range of the lever protrusion 18 except for the swinging range of the lever 22.

FIG. 2 is a perspective exploded view showing selected components around the lever 22 and the closure member 40.
The lever 22 has a U-shape when viewed from the right direction (Y-axis positive direction), specifically, the rear end portions of an upper linear portion and a lower linear portion that are long in the front and rear directions (in the axial direction of the X-axis). This is a sheet metal member having a shape in which the two are connected to each other by a long linear part in the vertical direction (in the axial direction of the Z-axis). The lever 22 has an upper bearing hole 25u through which the swing shaft 24 provided on the upper straight portion is inserted, and a lower bearing hole 25d through which the swing shaft 24 provided on the lower straight portion is inserted. The swing shaft 24 inserted through the lever 22 is prevented from coming off by an E-shaped retaining ring 26.

The swing shaft 24 has a flange portion 27 at the lower end, and a portion below the flange portion 27 is fixed to a shaft fixing base 30. The shaft fixing table 30 is fixed at a predetermined position on the base 10. The lower end of the swing shaft 24 is inserted into the shaft positioning hole 32 of the shaft fixing base 30, and the portion that penetrates below the shaft fixing base 30 is caulked, thereby deforming so that the diameter locally increases. The swing shaft 24 and the shaft fixing base 30 are fixed by being sandwiched between the caulked portion of the swing shaft 24 and the flange portion 27, and the swing shaft 24 is fixed to the base 10 via the shaft fixing base 30. It will be fixed in position.

The closing member 40 is a member that closes off the range other than the swinging range of the lever 22 in the lever protrusion opening 18 to prevent biological intrusion. The closing member 40 is made of a material that takes into consideration weather resistance, heat resistance, and durability. For example, polycarbonate is suitable, but other materials such as synthetic resin or metal may also be used.

The closing member 40 is fixed by combining an upper member 41 and a lower member 42 vertically and connecting them together at a fixing part 44. The fixing part 44 is divided into an upper fixing part 44 u extending from the upper member 41 and a lower fixing part 44 d extending from the lower member 42 . The upper fixing part 44u and the lower fixing part 44d can have, for example, a shape that fits in a concave and convex manner at the top and bottom, and in that case, they can have a function of positioning when the upper member 41 and the lower member 42 are assembled. can.

The upper member 41 and the lower member 42 are combined and connected vertically with the lever 22 in between, so that there is a swing space for the lever 22 (the lever 22 swings in conjunction with the lock piece) between the upper and lower parts. (The details of the swing space will be described later).

FIG. 3 is a diagram showing an example of the configuration around the lever 22 and the closing member 40, and is a longitudinal sectional view of the lever 22 viewed from the right direction (Y-axis positive direction).
FIG. 4 is a diagram in which the lever 22 is not shown in FIG. 3.
FIG. 5 is an enlarged plan view showing a configuration example around the lever 22 and the closing member 40, and the upper member 41 is not shown.

As shown in FIGS. 2 to 5, the upper member 41 has a top flange portion 45f at the top of the front end, an upper flange portion 45u at the left and right positions of the front end, and the swing shaft 24 is inserted through the rear end. It has an insertion hole 46 that passes through it vertically.

The top flange portion 45f is a portion that extends upward at a position that is outside the cover portion 12 when the cover portion 12 is placed on the cover portion 12. When the cover part 12 is put on, the back surface (rearward facing surface) of the top flange part 45f contacts the front surface (front side surface) of the cover part 12 at the lever projection port 18 (see FIG. 1), and the top flange part 45f It functions as one of the extension parts 45 that prevents invasion of organisms such as ants and dust.

The upper flange portion 45u is a portion extending in the left and right directions at a position on the outside of the cover portion 12 when the cover portion 12 is placed on the cover portion 12. When the cover part 12 is placed on the upper flange part 45u, the front surfaces of the left and right edges of the lever protrusion 18 come into contact with the back surface of the upper flange part 45u, and function as one of the expansion parts 45 that prevents the intrusion of organisms such as ants and dust.

The gap between the insertion hole 46 and the swing shaft 24 is configured to satisfy a predetermined minute gap condition that is effective in preventing the invasion of organisms such as ants and the intrusion of dust. The interval that satisfies the minute gap condition is 0.3 mm or less.

The lower member 42 includes a planar portion 47 surrounded by left, right, and rear walls, and an extending portion 48 extending downward from the front end of the planar portion 47 .

The gap between the upper surface of the planar portion 47 and the lower surface of the lever 22 is configured to satisfy a minute gap condition. The gap between the rear end of the planar portion 47 and the flange portion 27 of the swing shaft 24 is configured to satisfy a minute gap condition. Note that the gap between the rear end of the planar portion 47 and the flange portion 27 of the swing shaft 24 is set to satisfy the minute gap condition, and the gap between the top surface of the planar portion 47 and the bottom surface of the lever 22 is set to be a larger gap. Good too.

The lower end of the extending portion 48 is in contact with the base 10, and lower flange portions 45d are provided on the left and right side surfaces of the extending portion 48, respectively. The lower flange portion 45d is a portion extending in the left and right directions at a position on the outside of the cover portion 12 when the cover portion 12 is placed on the cover portion 12. When the cover part 12 is put on, the front surfaces (front side surfaces) of the left and right edges of the lever protrusion 18 come into contact with the back surface of the lower flange part 45d, which is one of the extended parts 45 that prevents invasion of organisms such as ants and dust. functions as

The swing space 60 defined between the upper member 41 and the lower member 42 of the closing member 40 is a space that is thin in the vertical direction (in the axial direction of the Z-axis) and generally flat in the left-right direction (in the axial direction of the Y-axis). It is. The upper half of the swinging space 60 is defined by walls extending downward on the left, right, and rear sides of the upper member 41, and the lower half of the swinging space 60 is defined by walls extending downward on the left, right, and rear sides of the upper member 41. It is defined by walls extending upward on three sides: left, right, and rear.

The swing space 60 has a front opening 60f at the front and a rear opening 60r at the rear.
The front opening 60f has a left-right width that allows the lever 22 to swing.
The lever 22 and the swing shaft 24 are inserted through the rear opening 60r.

In the front opening 60f and the rear opening 60r, the upper member 41 and the lower member 42 are close to the lever 22 and the swing shaft 24, and the gap between the lever 22 and the swing shaft 24 is configured to satisfy a minute gap condition. ing. Note that if the gap at least near the rear opening 60r (more specifically, near the swing shaft 24) is configured with a gap that satisfies the minute gap condition, then the area up to the front of the rear opening 60r (for example, the front (around the opening 60f) may be a larger gap than that.

The assembly procedure of the circuit controller 2 related to the closing member 40 will be explained.
In assembling the closing member 40, after the swing shaft 24 and the shaft fixing base 30 are fixed to the base 10 and the mechanism section 20 is assembled, before the cover section 12 is placed over the base 10 and connected with the cover mounting screw 14. Then, perform the following steps (1) and (2).

(1) The operator vertically sandwiches the lever 22 between the upper member 41 and the lower member 42, connects the upper member 41 and the lower member 42 together with the fixing part 44, and assembles the closing member 40.
A swinging space 60 is defined by the assembly of the closing member 40, and the lever 22 is in a state in which the closing member 40 is skewered so as to pass through the swinging space 60. By connecting the upper member 41 and the lower member 42, the upper flange portion 45u of the upper member 41 and the lower flange portion 45d of the lower member 42 form an integral continuous surface with their back surfaces aligned vertically. Furthermore, the back surfaces of the upper flange portion 45u and the lower flange portion 45d form a surface that is integrally continuous with the back surface of the top flange portion 45f. As a result, the top flange portion 45f, the upper flange portion 45u of the upper member 41, and the lower flange portion 45d of the lower member 42 are integrally connected to the front surface (front side surface) of the cover portion 12 at the lever protrusion 18. By contacting them, an expanded portion 45 is formed that prevents invasion of organisms such as ants.

(2) The operator passes the lever 22 and the closing member 40 through the swing shaft 24 and uses the E-shaped retaining ring 26 to prevent the lever 22 from coming off.
Specifically, with the tip of the lever 22 facing forward, the operator passes the upper end of the swing shaft 24 through the lower bearing hole 25d, and then inserts it into the insertion hole 46 while adjusting the position of the closing member 40. The swing shaft 24 is passed through, and then the swing shaft 24 is passed through the upper bearing hole 25u. Since the upper end of the swing shaft 24 protrudes above the upper bearing hole 25u, the operator fits the E-shaped retaining ring 26 into the groove of the swing shaft 24 provided at the upper end to prevent it from coming off.

After steps (1) and (2), the operator places the cover section 12 over the base section 10.
At this time, the operator must make sure that the left and right edges of the lever outlet 18 are in contact with the back surfaces of the upper flange 45u and lower flange 45d of the closing member 40, and that the upper edge of the lever outlet 18 is in contact with the back surface of the top flange 45f. The cover part 12 is placed on the cover part 12 while adjusting the position and posture of the closing member 40 so as to contact the back surface. As a result, the closing member 40 is fixed, and living things such as ants are prevented from entering between the lever protrusion 18 and the closing member 40.

The assembled circuit controller 2 prevents ants, dust, etc. from entering the internal space 16 from around the lever 22 due to the gaps set between the closing member 40, the lever 22, and the swing shaft 24. At the same time, wear of the closing member 40 due to swinging of the lever 22 and generation of dust due to the wear are suppressed.

Further, the vertical opening width of the front opening 60f of the swing space 60 is only the thickness of the lever 22, and the front opening 60f substantially opens only to the left and right sides of the lever 22. Therefore, the opening around the lever 22 (a gap preferred by ants) is smaller than that of the circuit controller of Patent Document 2, and intrusion into the swing space 60 itself can be suppressed. If the lever 22 swings at the timing when an ant or the like is about to enter the swing space 60 and is about to enter the opening, the lever 22 will act like a wiper and have the effect of sweeping away the ant or the like that is trying to enter the swing space 60. is also expected.

Note that the form to which the present invention can be applied is not limited to the above embodiments, and components may be added, omitted, or changed as appropriate. For example, part or all of the top flange portion 45f, upper flange portion 45u, and lower flange portion 45d may have a groove structure into which the edge of the lever protrusion 18 of the cover portion 12 is fitted.

2...Circuit controller 10...Base 12...Cover part 16...Internal space 18...Lever protrusion 20...Mechanism part 22...Lever 24...Swing shaft 30...Shaft fixing base 40...Closing member 41...Upper member 42...Downward Member 44... Fixed part 45d... Lower flange part 45f... Top flange part 45u... Upper flange part 47... Planar part 48... Extension part 60... Swing space 60f... Front opening 60r... Rear opening

Claims (4)

A circuit controller for an electric point machine that switches a circuit by swinging a lever protruding from the side of a cover part in conjunction with a lock piece,
a closing member through which the swing shaft of the lever is inserted and which separates the swing space of the lever from the internal space of the circuit controller;
Equipped with
The closing member has an upper member and a lower member that are combined to sandwich the lever above and below,
In the vicinity of the swing axis, a gap between the upper member and the lower member, and the lever and the swing axis is a gap that satisfies a predetermined minute gap condition;
circuit controller. Each of the upper member and the lower member has an expanded portion that contacts a side surface of the cover portion, and the expanded portion of the upper member and the expanded portion of the lower member constitute a continuous expanded portion by the combination. ,
The circuit controller according to claim 1. The upper member and the lower member are engaged with the cover part in the assembled state in the internal space of the vessel.
The circuit controller according to claim 1 or 2. The lower member is
a planar portion having an upper surface opposite to the lower surface of the lever;
an extension part extending below the lever along the side surface;
has
The extension part has an extension part that is longer in the vertical direction than the extension part of the upper member, as an extension part of the lower member.
The circuit controller according to claim 1 or 2.

Images