JP5894822B2 - Blocking plate mounting structure for circuit controller of electric switch - Google Patents

Description

  The present invention relates to a closing plate mounting structure for a circuit controller of an electric switch and a circuit controller having the closing plate mounting structure.

  2. Description of the Related Art Conventionally, there is an electric switch that electrically changes the point of a railway branching device (see, for example, Patent Document 1). The electric switch has a circuit controller and mechanically transmits the movement of the lock piece accompanying the change of point to the circuit controller. As shown in FIGS. 9 and 10, the circuit controller 102 has a lever 23 for transmitting external movement to the inside. The lever 23 is slidably supported, and protrudes to the outside of the housing 21 through an opening 22 formed in the housing 21 of the circuit controller 102. The casing 21 includes a base 211 and a cover 212 with a bottom without a lid. The opening 22 is formed in the cover 212 and has a size that does not hinder the movement of the lever 23 accompanying the change of the point. When the lever 23 is moved, a contact (not shown) inside the circuit controller 102 opens and closes. The opening and closing of the contacts is used for electrical control.

  The circuit controller 102 is accommodated in a metal case of the electric switch body. There is a drain hole in the bottom of the metal case. Insects may enter the metal case from the drain hole, and may enter the inside of the circuit controller 102 through the opening 22 of the circuit controller 102, and the circuit controller 102 may be damaged by the insects. It is considered that ozone is generated by the discharge accompanying the opening and closing of the contacts of the circuit controller 102 and the insects are attracted to the ozone odor, causing the insects to frequently enter the circuit controller 102.

  In order to prevent insects from entering the circuit controller 102, it has been studied to cover the opening 22 with a bellows-like rubber film. However, such a rubber film may be fatigued and fractured by the movement of the lever, and the broken rubber film may be solidified to block the opening 22 and hinder the movement of the lever 23.

Japanese Patent Application Laid-Open No. 7-10001

  The present invention solves the above-described problems, and an object of the present invention is to provide a closing plate mounting structure that closes an opening of a housing without obstructing movement of a lever in a circuit controller of an electric switch.

The closing plate mounting structure of the present invention closes the opening of the casing in which the lever is slidably inserted in the circuit controller of the electric switch, and the lever and the periphery of the opening A closing plate for closing the gap and a mounting base for slidably mounting the closing plate to the housing are provided on the surface side of the housing, and the closing plate is coupled to surround the lever. The pair of movable pieces is coupled with the lever interposed therebetween, and slides following the movement of the lever .

  In this closing plate mounting structure, a fitting recess and a fitting protrusion formed so as to be fitted to each other are formed on the one and the other movable pieces, respectively, and the fitting recess and the fitting protrusion It is preferable that the pair of movable pieces are coupled by fitting.

  In this closing plate mounting structure, it is preferable that the one movable piece has a slit formed along the periphery of the fitting recess.

  In this closing plate mounting structure, the mounting base includes a base having a long hole through which the lever is inserted, and a holding portion for holding each movable piece, and the closing plate is mounted on the base. It is preferable to slide.

  In this closing plate mounting structure, the base is formed with a groove portion for guiding the sliding of the closing plate, the closing plate has a convex portion that engages with the groove portion, and the groove portion has the closing portion. It is preferably formed in a length range corresponding to the slide of the plate.

  In this closing plate mounting structure, it is preferable that the mounting base is fixed to the housing.

  In this closing plate mounting structure, it is preferable that the mounting base has a positioning projection that engages with a peripheral edge of the opening.

  In this closing plate mounting structure, the mounting base may be formed integrally with the housing.

  The circuit controller of the present invention has the closing plate mounting structure.

  According to the closing plate mounting structure of the present invention, since the closing plate surrounds the lever, closes the opening, and slides following the movement of the lever, the opening can be closed without hindering the movement of the lever.

The front view of the circuit controller which has the closing board attachment structure which concerns on one Embodiment of this invention. The front view of the closing board attachment structure. The front view of the closing board in the same closing board attachment structure. The front view of the movable piece in the closing plate attachment structure. The front view of the mounting base in the blocking plate mounting structure. The side view of the mounting base. (A) is the sectional view on the AA line of FIG. 5, (B) is the sectional view on the BB line of FIG. (A) (B) is a front view explaining the movement of the closing plate on the same mounting base. The front view of the conventional circuit controller. The top view of the circuit controller.

  A closing plate mounting structure according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 1 and 2, the closing plate mounting structure 1 is configured to cover the opening 22 of the housing 21 in the circuit controller 2 of the electric switch. The casing 21 includes a base 211 and a cover 212 with a bottom without a lid. The opening 22 is formed in the cover 212. A lever 23 is slidably inserted into the opening 22. The lever 23 has a distal end located outside the opening 22 and has a lateral width at the distal end larger than that of the shaft portion. The closing plate mounting structure 1 includes a closing plate 3 and a mounting base 4. The closing plate 3 closes the gap between the lever 23 and the periphery of the opening 22. The mounting base 4 attaches the closing plate 3 to the housing 21 in a slidable manner. The closing plate 3 and the mounting base 4 are made of, for example, resin. The material of the closing plate 3 is preferably a resin having sliding properties and ozone resistance.

  As shown in FIG. 3, the closing plate 3 has a pair of movable pieces 3 a and 3 b coupled so as to surround the lever 23.

  As shown in FIG. 4, the fitting concave portion 31a is formed in one movable piece 3a, and the fitting convex portion 31b is formed in the other movable piece 3b. By fitting the fitting concave portion 31a and the fitting convex portion 31b, the pair of movable pieces 3a and 3b are coupled with the lever 23 interposed therebetween, and the closing plate 3 is configured.

  The movable piece 3a has a slit 32 formed along the periphery of the fitting recess 31a. The elongated portion 33 between the slit 32 and the peripheral edge of the fitting recess 31a has elasticity against the pressing from the fitting projection 31b.

  As shown in FIGS. 5 to 7, the mounting base 4 includes a base 41 and a holding portion 42. The base 41 has a long hole 43. The lever 23 is inserted into the long hole 43. The holding part 42 holds the movable pieces 3 a and 3 b, that is, the closing plate 3. The holding part 42 is formed at each of the left and right ends of the base 41 and holds the closing plate 3 in a side view. The closing plate 3 is held by the holding portion 42 and slides on the base 41.

  The base 41 has a shallow recess 44 that slidably accommodates the closing plate 3. Note that a part of the recess 44 is widened up and down to facilitate removal of the closing plate 3.

  The base 41 is formed with grooves 45 a and 45 b for guiding the sliding of the closing plate 3. The grooves 45 a and 45 b are formed at the bottom of the recess 44. The closing plate 3 has convex portions 34a and 34b that engage with the groove portions 45a and 45b (see FIG. 3). The groove portions 45 a and 45 b are formed in a length range corresponding to the sliding of the closing plate 3.

  The mounting base 4 is fixed to the housing 21 (see FIG. 1). The mounting base 4 is fixed using, for example, a double-sided adhesive tape or an adhesive.

  The mount 4 has a positioning projection 46 on the back surface that engages with the periphery of the opening 22.

  The mounting base 4 may be formed integrally with the housing 21. For example, the mounting base 4 is integrally formed with the cover 212 of the circuit controller 2 by resin molding.

  8A and 8B, in the closing plate mounting structure 1 configured as described above, when the lever 23 swings left and right, the closing plate 3 receives a force from the lever 23, and the lever Slide to the left and right following the movement of 23.

  As described above, according to the closing plate mounting structure 1 according to the present embodiment, the closing plate 3 surrounds the lever 23 to close the opening 22 and slides following the movement of the lever 23, so that the movement of the lever 23 is not hindered. The opening 22 can be closed. This prevents insects from entering the circuit controller 2.

  By fitting the fitting recess 31a and the fitting projection 31b, the pair of movable pieces 3a and 3b are coupled with the lever 23 interposed therebetween, so that the lever 23 can be easily surrounded.

  Since the movable piece 3a has slits 32 formed along the periphery of the fitting recess 31a, the elongated portion 33 between the slit 32 and the periphery has elasticity against the pressure from the fitting protrusion 31b. And the stress at the time of fitting can be relieved.

  Since the closing plate 3 slides on the base 41 of the mounting base 4, it can follow the movement of the lever 23.

  Since the slide of the closing plate 3 is guided by the grooves 45a and 45b, the movement of the slide is stabilized. Moreover, since the groove parts 45a and 45b are formed in the length range corresponding to a slide, the dust-proof effect by the closing board 3 becomes higher than forming in the full width of the closing board 3.

  By fixing the mounting base 4 to the housing 21, the closing plate mounting structure 1 is mounted on the existing circuit controller 2.

  Since the mounting base 4 has positioning protrusions 46 that engage with the periphery of the opening 22, the mounting base 4 can be easily positioned when fixed to the housing 21.

  When the closing plate mounting structure 1 is provided in a new circuit controller 2, the mounting base 4 is formed integrally with the housing 21, thereby reducing the number of parts and manufacturing cost.

  In addition, this invention is not restricted to the structure of said embodiment, A various deformation | transformation is possible in the range which does not change the summary of invention. For example, the grooves 45a and 45b may be arranged in one row.

DESCRIPTION OF SYMBOLS 1 Blocking board attachment structure 2 Circuit controller 21 Housing | casing 22 Opening part 23 Lever 3 Blocking board 3a, 3b Movable piece 31a Fitting recessed part 31b Fitting convex part 32 Slit 34a, 34b Convex part 4 Mounting base 41 Base 42 Holding part 43 Long holes 45a, 45b Groove 46 Projection

Claims (9)

In the circuit controller of the electric switch, it is a closing plate mounting structure that closes the opening of the casing through which the lever is slidably inserted,
A closing plate that closes the gap between the lever and the periphery of the opening, and a mounting base that slidably attaches the closing plate to the housing are provided on the surface side of the housing.
The closing plate has a pair of movable pieces coupled so as to surround the lever;
The pair of movable pieces are coupled to each other with the lever interposed therebetween, and slide according to the movement of the lever . A fitting concave portion and a fitting convex portion formed so as to be fitted to each other are formed on the one and the other movable pieces, respectively.
2. The closing plate mounting structure according to claim 1, wherein the pair of movable pieces are coupled by fitting the fitting concave portion and the fitting convex portion.   The closing plate mounting structure according to claim 2, wherein the one movable piece has a slit formed along a peripheral edge of the fitting recess. The mounting base has a base having a long hole through which the lever is inserted, and a holding portion for holding each movable piece,
The said closing board slides on the said base, The closing board attachment structure as described in any one of Claim 1 thru | or 3 characterized by the above-mentioned. The base is formed with a groove for guiding the closing plate slide,
The closing plate has a convex portion that engages with the groove portion,
The said groove part is formed in the length range corresponding to the slide of the said closing board, The closing board attachment structure of Claim 4 characterized by the above-mentioned.   The closing plate mounting structure according to claim 1, wherein the mounting base is fixed to the housing.   The closing plate mounting structure according to claim 6, wherein the mounting base has a positioning protrusion that engages with a peripheral edge of the opening.   6. The closing plate mounting structure according to claim 1, wherein the mounting base is formed integrally with the housing. The circuit controller which has the closing board attachment structure as described in any one of Claims 1 thru | or 8.

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