JP2023183647A - Circuit controller and electric switch machine - Google Patents

Abstract

To prevent intrusion of living things such as insects from a connection part with a jack plate in a circuit controller for an electric switch machine.SOLUTION: In a circuit controller 2, a cover part 12 covering a base part 10 to define an inner space 16 is engaged with a female screw part 82 of a jack plate 80 inserted in an insertion hole 17 with a fastening screw 70, and is connected to the jack plate 80. The fastening screw 70 has: a rod part 71 passing through the inner space 16; a rotation operation part 72 provided on a head part protruding from a top surface of the cover part 12; and a male screw part 73 positioned in the insertion hole 17 and provided on a lower part of the rod part 71. The circuit controller 2 makes a closing member 75 for a rod close a gap in the insertion hole 17 generated in a connection state where the male screw part 73 and the female screw part 82 are screwed with each other.SELECTED DRAWING: Figure 3

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 a circuit controller from the outside by contacting and closing the circuit controller (for example, see Patent Document 2).

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

The circuit controller for electric switch machines is used by being connected to the jack plate attached to the switch machine side, but it is assumed that insects and other organisms may enter through the connection with the jack plate. .

The problem to be solved by the present invention is to prevent creatures such as insects from entering through the connection part with the jack plate in a circuit controller for an electric switch machine.

A first invention for solving the above problems is a circuit controller for an electric switch machine connected to a jack plate, which includes a base, a cover part defining an internal space, and the jack plate. a tightening screw for screwing into an upper female threaded portion, the base portion having an insertion hole at a position corresponding to the female threaded portion, and the tightening screw extending from the top surface of the cover portion. a rotary operation part provided on a protruding head; a rod part penetrating the internal space; and a male screwed into the female screw part located in the insertion hole and provided at a lower part of the rod part. and a threaded portion, for closing the continuity between the outside of the device and the internal space through a gap in the insertion hole that occurs when the male threaded portion and the female threaded portion are screwed together. The circuit controller further includes a member.

According to the first aspect of the invention, it is possible to close the gap that occurs at the portion where the circuit controller is connected to the jack plate, so that it is possible to prevent creatures such as ants from entering through the gap.

A second invention is the circuit controller described above, wherein the closing member is a cylindrical body or an annular body through which the rod portion is inserted.

According to the second invention, it is possible to realize a circuit controller that uses the rod portion as a member for guiding the arrangement position of the closing member.

A third aspect of the present invention is that in the circuit controller, the closing member has an outer diameter larger than the inner diameter of the insertion hole, and moves downward in the internal space along the rod part by its own weight. closing the upper opening of the insertion hole;
It is a circuit controller.

According to the third invention, when the circuit controller is connected to the jack plate, the closing member moves due to its own weight and the upper opening of the insertion hole is automatically closed.

A fourth aspect of the present invention is the circuit controller described above, further comprising a movement limiting section that limits a movement range of the closing member along the rod section.

According to the fourth invention, the movement range of the closing member is limited to a predetermined range along the rod portion, so that the closing member is always movable along the rod portion. This improves work efficiency when connecting the circuit controller to the jack plate.

In a fifth aspect of the invention, in the circuit controller, the closing member is provided at a predetermined position of the rod part, and the male thread part and the female thread part are screwed together by a rotation operation of the rotation operation part. The circuit controller is partially or entirely inserted into the insertion hole to close the continuity between the external space and the internal space in the connected state.

According to the fifth invention, the gap related to the insertion hole can be reliably closed.

A sixth invention is the circuit controller described above, wherein the closing member is a hardened body or an elastic body.

According to the sixth invention, if the closing member is made of a hardened body, the closing member can be created using metal, hard resin, or the like. If the closing member is made of an elastic body, the closed state can be created by flexibly responding to deviations in relative position, relative posture, and variations in shape between the closing member and the insertion hole.

A seventh invention is an electric switch comprising the above circuit controller and the jack plate, wherein the female screw portion is inserted into the insertion hole during the connection. The electric point machine has a female threaded stud erected on the jack plate, and a second closing member of a cylindrical or annular body through which the female threaded stud is inserted.

According to the seventh invention, the upper gap around the insertion hole can be closed with the closing member, and the lower gap around the insertion hole can be closed with the second closing member.

FIG. 2 is a perspective external view of the circuit controller in the first embodiment. FIG. 2 is a side view of the circuit controller in the first embodiment. FIG. 3 is a side view showing the installed state of the circuit controller in the first embodiment. The figure which shows the example of a structure of the circuit controller in 2nd Embodiment. The figure which shows the example of a structure of the circuit controller and jack board in 3rd Embodiment.

Examples of embodiments of a circuit controller to which the present invention is applied will be described below, 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.

[First embodiment]
FIG. 1 is a perspective external view of an example of the configuration of a circuit controller 2 for an electric point machine according to a first embodiment, looking down diagonally from the front and upper right.
FIG. 2 is a side view of the circuit controller 2 viewed from the left (Y-axis negative direction), and is a partial cross-sectional view.
FIG. 3 is a side view showing the installation situation of the circuit controller 2 when viewed from the left side (Y-axis negative direction), and is a partially cross-sectional view.

The circuit controller 2 is covered with a transparent cover part 12 that covers the upper surface of the base part 10, and the cover part 12 is screwed to the base part 10 with cover mounting screws 14, thereby defining an internal space 16. 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 a switch machine is connected to the mechanism section 20.

The front end of the lever 22 (the part that engages with the lock piece) projects out of the device from the lever protrusion 18 (see FIG. 1). The lever protrusion 18 is a rectangular notch provided at the front lower end of the cover portion 12 . The rear end of the lever 22 is supported by a swing shaft 24 that is vertically supported in the internal space 16 so as to be swingable within a certain range left and right (in the axial direction of the Y-axis). That is, the circuit controller 2 switches the circuit by the lever 22 protruding from the side surface of the cover part 12 swinging in conjunction with the lock piece of the switch.

The gap between the lever 22 and the lever protrusion 18 is closed by a protrusion closing member 40 to prevent creatures such as ants from entering this gap.

As shown in FIG. 3, the circuit controller 2 is connected from above to a jack plate 80 fixed to the electric switch machine 3 by a tightening screw 70 that vertically passes through the base 10 and the cover part 12. The jack board 80 has a group of connection terminals for connecting the electric circuit of the circuit controller 2.

The tightening screw 70 includes a vertically long rod portion 71, a rotary operation portion 72 that is connected to the upper end of the rod portion 71 and can be operated from above the cover portion 12, and a male screw portion provided at the lower end of the rod portion 71. 73 and an E-type retaining ring 74.

The rod portion 71 is a linear portion that penetrates the ceiling portion of the cover portion 12 and is slidably fitted into the cover portion 12 .

The rotation operation part 72 is a part that is rotated by the operator's fingers to tighten the tightening screw 70, and is attached to the upper end of the rod part 71 protruding from the cover part 12. The diameter of the rotation operation section 72 is larger than the diameter of the rod section 71. When the rod part 71 falls against the cover part 12 due to its own weight, the rotation operation part 72 comes into contact with the top surface of the cover part 12, and the tightening screw 70 becomes suspended from the cover part 12, and the tightening screw 70 is suspended from the cover part 12. 70 is prevented from falling off from the cover part 12.

The male screw part 73 is provided at the lower end of the rod part 71 and is located in the insertion hole 17 that vertically passes through the base part 10 when the tightening screw 70 is suspended from the cover part 12 by the rotation operation part 72. .

The E-type retaining ring 74 is attached to the upper part of the rod part 71 (specifically, the part of the rod part 71 located above the internal space 16). When the cover part 12 is turned upside down, the E-shaped retaining ring 74 comes into contact with the inner surface of the ceiling of the cover part 12 to prevent the tightening screw 70 from falling off from the cover part 12. The position of the E-shaped retaining ring 74 is set so that the male threaded portion 73 does not come out of the insertion hole 17 when the cover portion 12 is turned upside down. In other words, the E-shaped retaining ring 74 functions, together with the rotary operation section 72, as a rod movement restriction section that limits the vertical movement range of the rod section 71.

When connecting the circuit controller 2 to the jack plate 80, the circuit controller 2 and the jack plate 80 are aligned so that the female screw stud 81 provided upright on the jack plate 80 is inserted into the insertion hole 17. Ru.

The female threaded stud 81 has a female threaded portion 82 at the upper end into which the male threaded portion 73 of the tightening screw 70 is screwed. The protruding length of the female screw stud 81 is set such that when the circuit controller 2 is connected to the jack plate 80, the female screw portion 82 is located within the insertion hole 17. The outer diameter of the female threaded stud 81 is smaller than the inner diameter of the insertion hole 17 of the base 10, and a gap is created between the outer peripheral surface of the female threaded stud 81 and the inner peripheral surface of the insertion hole 17.

There is a possibility that the gap between the female threaded stud 81 and the insertion hole 17 becomes a route for invasion of organisms such as ants. That is, an ant or the like that has entered the jack plate 80 climbs up the female threaded stud 81 and passes through the gap between the female threaded stud 81 and the insertion hole 17, causing the tightening screw 70 and the insertion hole 17 to There is a possibility that it may enter the gap and further invade the internal space 16 of the circuit controller 2. Therefore, the circuit controller 2 includes a rod closing member 75 that is inserted through the rod portion 71 of the tightening screw 70.

The rod closing member 75 is a cylindrical or annular body having an outer diameter larger than the inner diameter of the insertion hole 17 . The rod closing member 75 has an outer diameter sufficient to close the upper opening of the insertion hole 17 even if there are dimensional variations due to manufacturing.

The material of the rod closing member 75 can be a hardened body (for example, synthetic resin (hard resin), metal, non-ferrous metal, glass, etc.). By using the hardened material, the rod closing member 75 can be manufactured relatively inexpensively and easily. Moreover, the rod closing member 75 can be made to have less deterioration over time.

The fitting relationship between the rod closing member 75 and the rod portion 71 is set to be a "loose fit".
Therefore, when the circuit controller 2 is connected to the electric point machine 3 in the connection position (same as the vertical relationship in FIG. It moves downward in the internal space 16 along the section 71 and stops when it comes into contact with the upper opening of the insertion hole 17, thereby closing the insertion hole 17. Specifically, the lower surface of the rod closing member 75 contacts the periphery of the upper opening of the insertion hole 17 to cover and close the gap between the rod portion 71 and the rod closing member 75 from above.

If the circuit controller 2 is stored upside down, the rod closing member 75 will move in the internal space 16 along the rod portion 71 under its own weight. The upward movement range of the rod portion 71 is limited by the E-shaped retaining ring 74, and even if the rod portion 71 moves to the full limit, the tip of the male threaded portion 73 will not come out of the insertion hole 17. The rod closing member 75 moves in the direction of gravity without falling off the rod portion 71. There is an E-type retaining ring 74 at the moved end, and the E-type retaining ring 74 functions as a movement limiter that limits the movement range of the rod closing member 75 along the rod portion 71. When the circuit controller 2 is in the connecting position for connecting to the jack plate 80, the rod closing member 75 moves by its own weight along the rod portion 71 toward the male threaded portion 73, and the tightening screw 70 is moved by its own weight. The gap between the insertion hole 17 and the insertion hole 17 is closed.

[Second embodiment]
Next, a second embodiment to which the present invention is applied will be described. The second embodiment is basically realized in the same manner as the first embodiment, but differs in the structure for closing the gap between the tightening screw 70 and the insertion hole 17. In the description of the second embodiment, the differences from the first embodiment will be mainly described, and the same components as in the first embodiment will be given the same reference numerals as in the first embodiment, and redundant explanation will be omitted. .

FIG. 4 is a diagram showing a configuration example of the circuit controller 2B in the second embodiment, and is a sectional view showing the periphery of the structure for closing the gap between the tightening screw 70B and the insertion hole 17 in the second embodiment. be.

The tightening screw 70B includes an elastic rod closing member 75B and a second E-type retaining ring 76.

The second E-type retaining ring 76 is attached at a position for pressing the rod closing member 75B in an elastically deformed state against the upper opening of the insertion hole 17 when the circuit controller 2B and the jack plate 80 are connected. .

Further, the second E-type retaining ring 76 also functions as a movement restricting portion that restricts upward movement of the rod closing member 75B along the rod portion 71.

According to the second embodiment, the same effects as the first embodiment can be obtained. Furthermore, in the second embodiment, when the circuit controller 2B and the jack plate 80 are connected, the rod closing member 75B is pressed against the upper opening of the insertion hole 17 while being elastically deformed. The degree of adhesion is increased, and the gap between the tightening screw 70B and the insertion hole 17 can be reliably closed while having followability that tolerates dimensional variations during manufacturing.

[Third embodiment]
Next, a third embodiment to which the present invention is applied will be described. The third embodiment is basically realized in the same manner as the first embodiment, but differs in the structure for closing the gap between the tightening screw 70 and the insertion hole 17. In the description of the third embodiment, the differences from the first embodiment will be mainly described, and the same components as in the first embodiment will be given the same reference numerals as in the first embodiment, and redundant explanation will be omitted. .

FIG. 5 is a diagram showing a configuration example of the circuit controller 2C and the jack plate 80C in the third embodiment, and shows the periphery of the structure that closes the gap between the tightening screw 70C and the insertion hole 17 in the third embodiment. FIG.

The tightening screw 70C of the third embodiment includes a rod closing member 75C, which is an O-ring made of an elastic material, and a ring groove 78 for fitting the O-ring into a predetermined position of the rod portion 71.

The rod closing member 75C is the first closing member in the third embodiment. The outer diameter of the rod closing member 75C is set to a value slightly larger than the inner diameter of the upper opening of the insertion hole 17.

The ring groove 78 is set at a position where the rod closing member 75C is elastically deformed during the threading process between the male threaded portion 73 and the female threaded portion 82 and is partially or completely inserted into the upper opening of the insertion hole 17. ing. The ring groove 78 functions as a movement restriction portion that prevents the rod closing member 75C from moving along the rod portion 71.

The female screw stud 81C of the jack plate 80C has a stud closing member 84 which is an O-ring made of an elastic material, and a ring groove 85 into which the stud closing member 84 is fitted. The ring groove 85 functions as a movement restriction portion that prevents the stud closing member 84 from moving along the female threaded stud 81C.

The stud closure member 84 is the second closure member in the third embodiment. The stud closing member 84 is realized, for example, by an O-ring which is an annular body made of an elastic material and whose outer diameter is set to a value slightly larger than the inner diameter of the lower opening of the insertion hole 17 . The stud closing member 84 may be a cylindrical body made of an elastic material.

The ring groove 85 is located at a position where the stud closing member 84 is elastically deformed and partially or completely inserted into the lower opening of the insertion hole 17 during the screwing process between the male threaded portion 73 and the female threaded portion 82; The stud closing member 84 is set at a position in close contact with a downwardly expanding tapered surface of the lower opening of the insertion hole 17.

When the circuit controller 2C is connected to the jack plate 80, the upper opening of the insertion hole 17 is closed by the rod closing member 75C, and the lower opening of the insertion hole 17 is closed by the stud closing member 84.

According to the third embodiment, the same effects as the first embodiment can be obtained. In addition, in the third embodiment, the insertion hole 17 can be closed from above and below.

In addition, a configuration in which either the set of the rod closing member 75C and the ring groove 78 or the set of the stud closing member 84 and the ring groove 85 is omitted is also possible.

Further, the rod closing member 75C is not limited to an O-ring, but may be a cylindrical body or an annular body made of an elastic material and having a shape in which the outer diameter of the lower end gradually decreases as it goes downward. Similarly, the stud closing member 84 is not limited to an O-ring, but may be a cylindrical or annular body made of an elastic material and having a shape in which the outer diameter of the upper end gradually decreases upward.

Although several embodiments to which the present invention is applied have been described, forms to which the present invention can be applied are not limited to the above embodiments, and constituent elements may be added, omitted, or changed as appropriate.

2, 2B, 2C...Circuit controller 3, 3C...Electric point machine 12...Cover portion 16...Internal space 17...Insertion hole 18...Lever protrusion port 22...Lever 40...Protrusion port closing member 70, 70B, 70C ...Tightening screw 71...Rod part 72...Rotation operation part 73...Male thread part 74...E type retaining ring 75, 75B, 75C...Rod closing member 76...Second E type retaining ring 80, 80C...Jack plate 81, 81C ... Female threaded stud 82... Female threaded part 84... Stud closure member

Claims (7)

A circuit controller for an electric switch connected to a jack board,
The base and
a cover part defining an internal space;
a tightening screw for screwing into the female threaded portion on the jack plate;
Equipped with
The base portion has an insertion hole at a position corresponding to the female screw portion,
The tightening screw is
a rotation operation unit provided on a head protruding from the top surface of the cover unit;
a rod portion penetrating the internal space;
a male threaded portion located within the insertion hole and screwed into the female threaded portion provided at a lower portion of the rod portion;
has
a closing member for closing the continuity between the outside of the device and the inside of the device through a gap in the insertion hole that occurs when the male threaded portion and the female threaded portion are screwed together;
A circuit controller further comprising: The closing member is a cylindrical body or an annular body that is inserted through the rod part,
The circuit controller according to claim 1. The closing member has an outer diameter larger than the inner diameter of the insertion hole, and closes the upper opening of the insertion hole by moving downward in the internal space along the rod part due to its own weight.
The circuit controller according to claim 2. a movement limiter that limits a movement range of the closure member along the rod portion;
further comprising;
The circuit controller according to claim 3. The closing member is provided at a predetermined position of the rod portion, and is partially or entirely inserted into the insertion hole during the threading process of the male threaded portion and the female threaded portion by the rotation operation of the rotation operation portion. By closing the continuity between the outside of the vessel and the inside of the vessel in the connected state,
The circuit controller according to claim 2. The closing member is a hardened body or an elastic body.
A circuit controller according to any one of claims 1 to 5. A circuit controller according to any one of claims 1 to 5,
the jack board;
An electric point machine comprising:
The female threaded portion is a female threaded stud erected on the jack plate that is inserted into the insertion hole during the connection, and the female threaded portion is a second part of a cylindrical body or annular body through which the female threaded stud is inserted. having a closure member of
Electric point machine.

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