Electric point machine housing structure

Abstract

To provide a casing structure of an electric point machine having higher water resistance than a conventional technology.SOLUTION: A casing structure of an electric point machine 1 includes a case (a casing) 10 having an opening part 10a on its top surface, a case cover (a lid body) 11 opening / closing the opening part 10a, and a frame-like seal member 12 formed by a flexible elastic material to surround the opening part 10a. The seal member 12 includes a plurality of upward facing protrusion parts, which are mounted on an upper part of the case 10 to protrude upward and are arranged in parallel to extend over its entire circumference, on its upper part. When the opening part 10a is closed with the case cover 11, at least one of the plurality of upward facing protrusion parts is pressed with the case cover 11.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a housing structure of an electric point machine that switches tongue rails at a turnout on a track on which trains run. [Background technology]

[0002] In general, an electric point machine includes a motor, a reduction mechanism, a switching gear, a switching roller, and an operating bar. In the electric point machine, the rotational force of the motor is transmitted to the switching roller via the reduction mechanism and the switching gear, and the operating bar moves linearly back and forth with the rotational motion of the switching roller. As a result, the position of the tongue rail connected to the operating bar moves between the normal position and the opposite position.

[0003] An example of a conventional electric point machine is disclosed in Patent Document 1. The electric point machine disclosed in Patent Document 1 employs a housing structure in which an upper opening of a housing (case) is covered with a lid member (cover) via a sealing member (packing). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-9872 A Summary of the Invention [Problem to be solved by the invention]

[0005] In recent years, flood damage caused by torrential rains such as typhoons and sudden downpours has become frequent. Electric point machines are easily affected by flood damage because they are installed near the rail surface, and replacing them is not easy. For this reason, there is a demand for improving the water resistance of electric point machines.

[0006] Therefore, an object of the present invention is to provide a housing structure for an electric point machine that has higher water resistance than the conventional technology. [Means for solving the problem]

[0007] According to one aspect of the present invention, a housing structure for an electric point machine includes a housing having an opening on an upper surface, a cover for opening and closing the opening, and a frame-shaped seal member formed of a soft elastic material and surrounding the opening. Removable Installed, and A plurality of parallel upward ridges that protrude upward and extend around the entire circumference The sealing member has an insertion groove formed around the entire periphery into which the upper part of the housing is inserted when the sealing member is attached to the upper part of the housing, and a hollow portion extending around the entire periphery between the insertion groove and the plurality of upward protrusions, and a bottom portion of the insertion groove has: At least one downward ridge that projects downward and extends around the entire circumference is formed. The housing structure of the electric point machine is such that, when the opening is closed by the cover, at least one of the plurality of upward protrusions is pressed by the cover and the at least one downward protrusion is pressed against the housing. The above Top Top surface of It is configured to be pressed against the

[0008] According to another aspect of the present invention, a housing structure for an electric point machine includes a housing having an opening on an upper surface, a cover for opening and closing the opening, and a frame-shaped seal member formed of a soft elastic material and surrounding the opening. Removable Installed, and A plurality of parallel downward ridges that protrude downward and extend around the entire circumference The sealing member has an insertion groove formed around the entire periphery into which the lower part of the lid body is inserted when the sealing member is attached to the lower part of the lid body, and a hollow portion extending around the entire periphery between the insertion groove and the plurality of downward protrusions is formed, and a bottom portion of the insertion groove is provided with: At least one upwardly extending ridge that projects upward and extends around the entire circumference is formed. The housing structure of the electric point machine is such that, when the opening is closed by the cover, at least one of the plurality of downward protrusions is pressed by the housing and the at least one upward protrusion is pressed by the cover. The above At the bottom Lower end surface It is configured to be pressed against the

[0009] According to yet another aspect of the present invention, a housing structure for an electric point machine includes a housing having an opening on an upper surface, a cover for opening and closing the opening, and a frame-shaped seal member formed of a soft elastic material and surrounding the opening. Drives the operating lever of an electric point machine waterproof structure ofThe motor is attached to the lid, and the lid is configured to rotate vertically around a rotation fulcrum located outside the housing and above the motor to open and close the opening. The seal member is attached to the housing or the lid, and is compressed between the housing and the lid when the lid closes the opening. Effect of the Invention

[0010] According to the present invention, it is possible to provide a housing structure for an electric point machine having higher water resistance than the conventional technology. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing an electric point machine according to an embodiment (with a case cover open). [Diagram 2] FIG. 2 is a perspective view showing an electric point machine with the case cover removed. [Diagram 3] FIG. 2 is a plan view of a sealing member that seals between a case and a case cover in an electric point machine. [Figure 4] FIG. 4 is an enlarged view of the cross section AA of FIG. [Diagram 5] 4 is a cross-sectional view of a main portion showing the sealing member attached to the upper part of the case. FIG. [Figure 6] 11 is a cross-sectional view of a main portion showing a state of the seal member when the opening of the case is closed by the case cover (when the case cover is fastened to the case). FIG. [Figure 7] 13A and 13B are diagrams illustrating modified examples of the seal member. [Figure 8] 13 is a cross-sectional view of a main portion showing the sealing member when it is attached to the lower part of the case cover instead of the upper part of the case. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of an electric point machine to which a housing structure according to the present invention is applied will be described with reference to the drawings. In the following description, a direction parallel to the extension direction of a base rail (not shown) is defined as a front-rear direction, a direction parallel to the width direction of the base rail is defined as a left-right direction, and a direction parallel to the height direction of the base rail is defined as a top-bottom direction.

[0013] FIG. 1 is a perspective view showing an electric point machine (with a case cover (lid body) open) according to an embodiment, and FIG. 2 is a perspective view showing an electric point machine with the case cover (lid body) removed.

[0014] Referring to FIG. 1, an electric point machine 1 according to an embodiment employs a housing structure including a box-shaped case (housing) 10 having an opening 10a on its upper surface, a case cover (lid) 11 for opening and closing the opening 10a of the case 10, and a frame-shaped sealing member 12 surrounding the opening 10a of the case 10.

[0015] 1 and 2, in the electric point machine 1, a motor 20 having a waterproof structure is attached to the rear surface of a case 10. Moreover, most of the parts (components) constituting the electric point machine 1 (including parts that partially protrude outside the case 10) are arranged inside the case 10. Specifically, in this embodiment, an external line terminal board 21, a control relay 22, a circuit controller 23, an operation rod 24, a lock rod 25, etc. are arranged inside the case 10. Moreover, although not shown in FIGS. 1 and 2, a reduction mechanism, a switching gear, and a switching roller are arranged inside the case 10.

[0016] The speed reduction mechanism has a plurality of gears and transmits the rotational force of the motor 20 to the conversion gear. The conversion gear has the conversion roller attached to it. The conversion roller presses a conversion cam surface (not shown) of the operating rod 24 in conjunction with the rotation of the conversion gear, thereby causing the operating rod 24 to reciprocate in the left-right direction (linear reciprocating motion).

[0017] The operating rod 24 is a part for moving the position of a tongue rail (not shown) from a normal position to a reversed position or from the reversed position to the normal position. The operating rod 24 is disposed penetrating the case 10 in the left-right direction (i.e., both ends of the operating rod 24 protrude outside the case 10). One end of the operating rod 24 is connected to the tongue rail. By moving the operating rod 24 in the left-right direction, the position of the tongue rail can be switched between the normal position and the reversed position.

[0018] The locking can 25 is a part for maintaining (locking) the tongue rail in the same position after it has been switched to the normal position or the reverse position by the operating can 24. The locking can 25 is disposed penetrating the case 10 in the left-right direction (i.e., both ends of the locking can 25 protrude outside the case 10, similar to the operating can 24). One end of the locking can 25 is connected to the tongue rail. When the position of the tongue rail is switched to the normal position or the reverse position with the movement of the operating can 24, the locking can 25 moves in the same direction as the movement of the operating can 24.

[0019] Although not shown in the figure, a waterproof structure that combines sealing materials and grease is applied to each of the entrance and exit parts of the operating rod 24 and the locking rod 25 in the case 10, thereby preventing water from entering the case 10 from the outside through the entrance and exit parts.

[0020] The case cover 11 is configured to rotate in the vertical direction (the direction of the arrow in FIG. 1) about a rotation fulcrum X to open and close the opening 10a of the case 10. In this embodiment, the rotation fulcrum X of the case cover 11 is provided at a position spaced rearward from the rear end of the case 10 (i.e., outside the case 10).

[0021] Specifically, in this embodiment, a support member 30 that supports the case cover 11 so as to be rotatable in the up-down direction is attached to the rear end of the case 10. The support member 30 is formed, for example, by processing a metal plate. One end of the support member 30 is fixed to the upper part of the rear end of the case 10 and extends above the motor 20 toward the rear of the case 10. The other end of the support member 30 is bent (folded back) into a horizontal U-shape so that the other end of the support member 30 faces upward to form a hook portion 30a (see FIG. 2).

[0022] On the other hand, a pair of arms 31, 31 extending rearward are provided at the rear end of the case cover 11, and a round bar-shaped shaft member 32 is attached between the tips of the pair of arms 31, 31. Specifically, one end of the shaft member 32 is fixed to one tip of the pair of arms 31, 31, and the other end is fixed to the other tip of the pair of arms 31, 31.

[0023] The shaft member 32 on the case cover 11 side is inserted into the hook portion 30a of the support member 30 on the case 10 side, so that the case cover 11 is supported by the support member 30 so as to be rotatable in the up-down direction. In this embodiment, the inner diameter of the hook portion 30a is set slightly larger than the outer diameter of the shaft member 32, and the dimension of the hook portion 30a in the width direction (left-right direction) is set slightly smaller than the length of the shaft member 32. Therefore, the case cover 11 is positioned in the front-rear direction and left-right direction with respect to the case 10 by inserting the shaft member 32 into the hook portion 30a. Therefore, the case cover 11 closes the opening 10a of the case 10 at the correct position by being gently lowered (rotated downward) with the shaft member 32 inserted into the hook portion 30a.

[0024] In this embodiment, the case cover 11 closing the opening 10a of the case 10 is fastened to the case 10 by rotating a hand knob 40 provided at the front end of the case 10, i.e., on the opposite side of the opening 10a from the pivot point X. The hand knob 40 has a handle 40a for operation. The handle 40a is configured to be rotatable 180 degrees so that the tips face in opposite directions (for example, a state facing the rear side as shown in Figs. 1 and 2 and a state facing the front side as opposed to the opposite direction).

[0025] Furthermore, by performing the reverse operation to that described above, i.e., by rotating the hand knob 40 to release the fastening of the case cover 11 to the case 10, the case cover 11 is lifted (rotated upward), and the shaft member 32 is pulled out of the hook portion 30a, the case cover 11 can be removed (separated from the case 10).

[0026] The seal member 12 is made of a soft elastic material. Although not particularly limited, the seal member 12 is preferably made of synthetic rubber (nitrile rubber NBR, ethylene propylene rubber EPDM, chloroprene rubber CR, silicone rubber SI, etc.) that is excellent in elasticity and weather resistance. In this embodiment, the lower side of the seal member 12 is removably attached to the upper part of the case 10 so as to surround the opening 10a of the case 10.

[0027] When the opening 10a of the case 10 is closed by the case cover 11 and the case cover 11 is fastened to the case 10 by rotating the hand knob 40, the sealing member 12 is compressed between the case 10 and the case cover 11 to seal the gap between the case 10 and the case cover 11. In other words, the opening 10a is hermetically sealed. Note that hereinafter, "when the opening 10a of the case 10 is closed by the case cover 11" mainly refers to the state in which the case cover 11 is fastened to the case 10.

[0028] FIG. 3 is a plan view of the seal member 12, and FIG. 4 is an enlarged view of the AA cross section of FIG.

[0029] 3 and 4, the upper part of the seal member 12 has an arc-shaped cross section that is convex upward. In addition, a plurality of (four here) ridges (hereinafter referred to as "upward ridges") 121 that protrude upward (including diagonally upward) and extend all around are formed on the surface of the upper part of the seal member 12. The tip of the upward ridge 121 has an arc-shaped cross section that is convex upward.

[0030] In this embodiment, the multiple (four) upward protrusions 121 are disposed at equal intervals on the surface of the upper portion of the seal member 12. The multiple (four) upward protrusions 121 are disposed evenly (two on each side) on both sides of the apex of the seal member 12, in other words, the center line of the AA cross section (hereinafter simply referred to as the "cross-sectional center line of the seal member") CL that passes through the apex of the seal member 12. In other words, an even number of upward protrusions 121 are formed in parallel on the surface of the upper portion of the seal member 12, and the even number of upward protrusions 121 are disposed evenly on both sides of the apex (cross-sectional center line CL) of the seal member 12.

[0031] An insertion groove 122 into which the upper part of the case 10 fits when the seal member 12 is attached to the upper part of the case 10 is formed around the entire periphery of the lower part of the seal member 12. In other words, the insertion groove 122 functions as an attachment part that is attached to the upper part of the case 10. The insertion groove 122 is provided on the center line CL of the cross section of the seal member 12. The width W of the insertion groove 122 is equal to or slightly smaller than the thickness T (see FIG. 5) of the upper part of the case 10, and the bottom 122a of the insertion groove 122 forms a flat surface.

[0032] A bottom (groove bottom surface) 122a of the fitting groove 122 is formed with a plurality of (here, two) parallel protrusions (hereinafter referred to as "downward protrusions") 123 that protrude downward and extend around the entire circumference. The tip of the downward protrusion 123 has a cross-sectional shape that is convex downwardly and is an arc. In this embodiment, the plurality (two) downward protrusions 123 are disposed equally on the left and right (one on each side) across the cross-sectional center line CL of the seal member 12 (= the center line of the fitting groove 122).

[0033] Furthermore, the seal member 12 is formed with a cavity 124 extending over the entire circumference between the multiple upward protrusions 121 and the bottom 122a of the fitting groove 122 (in other words, the multiple downward protrusions 123). In this embodiment, the cavity 124 has a circular cross section. However, this is not limited to this, and the cross-sectional shape of the cavity 124 can be set arbitrarily.

[0034] FIG. 5 is a cross-sectional view of a key portion showing sealing member 12 when attached to the top of case 10, and FIG. 6 is a cross-sectional view of a key portion showing the state of sealing member 12 when case cover 11 closes opening 10a of case 10 (when case cover 11 is fastened to case 10).

[0035] As shown in FIG. 5, the seal member 12 is attached to the upper part of the case 10 so that the tip of the downward protrusion 123 contacts the upper end surface 10b of the upper part of the case 10. Thereafter, when the opening 10a of the case 10 is closed by the case cover 11 and the case cover 11 is fastened to the case 10 by rotating the hand knob 40, the seal member 12 is compressed between the case 10 and the case cover 11. That is, the seal member 12 is compressed between the case 10 and the case cover 11 when the opening 10a of the case 10 is closed by the case cover 11. Then, as shown in FIG. 6, the seal member 12 is elastically deformed as the multiple upward protrusions 121 contact and are pressed against the corresponding surfaces of the case cover 11 and the multiple downward protrusions 123 are pressed against the upper end surface 10b of the upper part of the case 10. As a result, the seal member 12 effectively seals between the case 10 and the case cover 11.

[0036] According to the electric point machine 1 according to the embodiment, the following effects can be obtained.

[0037] The seal member 12, which is made of a flexible elastic material and surrounds the opening 10a of the case 10, is attached to the upper part of the case 10. The seal member 12 also has a plurality of parallel upward protrusions 121 on its upper part that protrude upward and extend all around. The plurality of upward protrusions 121 are configured to be pressed by the case cover 11 when the opening 10a on the top surface of the case 10 is closed by the case cover 11.

[0038] Therefore, sufficient contact pressure of the seal member 12 against the case cover 11 is obtained, and good sealing between the case 10 and the case cover 11 is ensured when the opening 10a of the case 10 is closed by the case cover 11. Furthermore, each of the multiple upward protrusions 121 is separated from the other upward protrusions 121, and even if any of the multiple upward protrusions 121 is twisted, the other upward protrusions 121 are hardly affected. Therefore, the occurrence of a partial gap between the case cover 11 and the seal member 12 is also suppressed. Therefore, good and stable sealing between the case 10 and the case cover 11 is obtained when the opening 10a of the case 10 is closed by the case cover 11, and water is prevented from entering the case 10 from the outside. As a result, an electric point machine (a housing structure thereof) having high water resistance compared to the conventional technology is obtained.

[0039] Furthermore, an insertion groove 122 into which the upper part of the case 10 fits when the sealing member 12 is attached to the upper part of the case 10 is formed around the entire periphery of the lower part of the sealing member 12, and the insertion groove 122 functions as an attachment part for attaching the sealing member 12 to the upper part of the case 10. Therefore, the sealing member 12 can be easily and stably attached to the upper part of the case 10, and the sealing member 12 can also be easily removed from the upper part of the case 10.

[0040] Furthermore, the seal member 12 is formed with a cavity 124 extending around the entire circumference between the multiple upward protrusions 121 and the bottom 122a of the fitting groove 122. Therefore, when the opening 10a on the top surface of the case 10 is closed by the case cover 11, that is, when the seal member 12 is compressed between the case 10 and the case cover 11, the seal member 12 can be deformed to conform to the compression. Therefore, a good and stable seal can be obtained between the case 10 and the case cover 11. It is also possible to adjust the shape and size of the cavity 124 to adjust the deformation conformity of the seal member 12 to the compression.

[0041] Furthermore, a plurality of downward protrusions 123 that protrude downward and extend all around the circumference are formed in the bottom 122a of the fitting groove 122, and are arranged in parallel, and when the opening 10a of the case 10 is closed by the case cover 11, the plurality of downward protrusions 123 are pressed against the upper end surface 10b of the upper part of the case cover 11. Therefore, even if the seal member 12 is removably attached to the upper part of the case 10, water from the outside is prevented from entering the case 10 through between the upper part of the case 10 and the fitting groove 122 of the seal member 12.

[0042] In the above embodiment, the case cover 11 is configured to rotate vertically around the pivot point X to open and close the opening 10a of the case 10, and the pivot point X is provided at a position spaced rearward from the rear end of the case 10. Specifically, the case cover 11 is attached at one end to the case 10 and is supported by a support member 30 extending rearward from the case 10 so as to be rotatable vertically. This makes it possible to compress the entire seal member 12 generally from the vertical direction, and particularly suppresses the occurrence of twisting or the like in a portion of the seal member 12 close to the pivot point X. Therefore, even better sealing can be obtained between the case 10 and the case cover 11 when the opening 10a of the case 10 is closed by the case cover 11.

[0043] In the above embodiment, when the opening 10a of the case 10 is closed by the case cover 11, all of the multiple upward protrusions 121 are pressed by the case cover 11. However, this is not limited to this. It is sufficient that at least one of the multiple upward protrusions 121 is pressed by the case cover 11 when the opening 10a of the case 10 is closed by the case cover 11.

[0044] In the above embodiment, a plurality of downward protrusions 123 are formed in parallel on the bottom 122a of the fitting groove 122. However, this is not limited to this. One downward protrusion 123 may be formed on the bottom 122a of the fitting groove 122. In this case, it is preferable that one downward protrusion 123 is disposed on or in the vicinity of the cross-sectional center line CL of the seal member 12 (= the center line of the fitting groove 122). In other words, it is sufficient that at least one downward protrusion 123 is formed on the bottom 122a of the fitting groove 122.

[0045] In the above embodiment, the seal member 12 is removably attached to the upper part of the case 10. However, this is not limited to this. The seal member 12 may be attached (fixed) to the upper part of the case 10 by adhesive or the like so that it cannot be removed. For example, the seal member 12 is attached to the upper part of the case 10 by bonding the bottom part 122a of the fitting groove 122 to the upper end surface 10b of the upper part of the case 10. In this case, the downward protrusion part 123 may not be formed on the bottom part 122a of the fitting groove 122. Even in this case, the same effect as the above embodiment can be obtained. However, in the above embodiment, it is possible to maintain good sealing between the case 10 and the case cover 11 for a long period of time by replacing the seal member 12, and in this respect, the above embodiment is advantageous.

[0046] 7, the seal member 12 may have at least one protrusion (hereinafter referred to as a "lateral protrusion") 125 (here, two on each side surface 122b of the fitting groove 122, for a total of four) formed on the side surface 122b of the fitting groove 122, protruding inwardly and extending around the entire circumference. The tip of the lateral protrusion 125 has an arc-shaped cross section that protrudes toward the inside of the groove. In this way, even if the seal member 12 is removably attached to the top of the case 10, water from the outside can be more effectively prevented from entering the case 10 through the gap between the top of the case 10 and the fitting groove 122 of the seal member 12.

[0047] In the above embodiment, the seal member 12 is attached to the upper part of the case 10. However, this is not limited to this. As shown in FIG. 8, the seal member 12 may be attached to the lower part of the case cover 11. In this case, the top and bottom of the seal member 12 in the above embodiment are reversed. That is, the upper part (lower part) of the seal member 12 in the above embodiment becomes the lower part (upper part) of the seal member 12, the upward protrusion 121 becomes a downward protrusion, and the downward protrusion 123 becomes an upward protrusion. Then, when the case cover 11 closes the opening 10a of the case 10, at least one of the multiple downward protrusions (the upward protrusion 121 in the above embodiment) is pressed against the case 10. This also provides the same effect as the above embodiment.

[0048] Although the embodiments and modifications of the present invention have been described above, the present invention is not limited to the above-described embodiments and modifications, and it goes without saying that further modifications and changes are possible based on the technical concept of the present invention. [Explanation of symbols]

[0049] 1...electric switch, 10...case (housing), 10a...opening, 11...case cover (lid), 12...sealing member, 20...motor, 24...operating rod, 25...locking rod, 30...supporting member, 30a...hook portion, 31...arm portion, 32...shaft member, 40...hand knob, 40a...hand knob handle, 121...upward protrusion portion, 122...insertion groove (mounting portion), 122a...bottom portion of insertion groove, 123...downward protrusion portion, 124...hollow portion, X...rotation fulcrum

Claims

1. A device comprising: a housing having an opening on an upper surface; a cover for opening and closing said opening; and a frame-shaped seal member formed of a soft elastic material and surrounding said opening; the seal member is removably attached to an upper portion of the housing, and has a plurality of parallel upward protrusions that protrude upward and extend around the entire circumference; the sealing member has an insertion groove formed around its entire periphery into which the upper portion of the housing is inserted when the sealing member is attached to the upper portion of the housing, and a hollow portion extending around its entire periphery between the insertion groove and the plurality of upward protrusions, At least one downward protrusion is formed on the bottom of the insertion groove, the protrusion protruding downward and extending around the entire circumference, When the opening is closed by the lid, at least one of the plurality of upward protrusions is pressed by the lid and the at least one downward protrusion is pressed against an upper end surface of the upper portion of the housing. Housing structure of electric point machine.

2. At least one lateral protrusion portion is formed on the side surface of the insertion groove, the lateral protrusion portion protruding inwardly from the groove and extending around the entire circumference, The at least one lateral protrusion is in contact with a side surface of the upper portion of the housing. The housing structure of an electric point machine according to claim 1.

3. The device includes a housing having an opening on an upper surface, a cover for opening and closing the opening, and a frame-shaped seal member formed of a soft elastic material and surrounding the opening, The sealing member is removably attached to the lower portion of the lid body, and has a plurality of parallel downward protrusions that protrude downward and extend around the entire periphery, the sealing member has an insertion groove formed around its entire periphery into which the lower portion of the lid body is inserted when the sealing member is attached to the lower portion of the lid body, and a hollow portion extending around its entire periphery between the insertion groove and the plurality of downward protrusions is formed; At least one upward protrusion is formed on the bottom of the insertion groove, the protrusion protruding upward and extending around the entire circumference, When the opening is closed by the lid, at least one of the plurality of downward protrusions is pressed by the housing and the at least one upward protrusion is pressed against a lower end surface of the lower part of the lid. Housing structure of electric point machine.

4. The electric point machine housing structure according to any one of claims 1 to 3, wherein the cover body is configured to open and close the opening by rotating in an up and down direction around a pivot point, and the pivot point is provided at a position spaced outward from an end of the housing.

5. A waterproof motor for driving an operating rod of an electric point machine is attached to the outer surface of the housing, The pivot point is located outside the housing and above the motor. The housing structure of an electric point machine according to claim 4.

6. A housing structure for an electric point machine, The device includes a housing having an opening on an upper surface, a cover for opening and closing the opening, and a frame-shaped seal member formed of a soft elastic material and surrounding the opening, A waterproof motor for driving an operating rod of an electric point machine is attached to the outer surface of the housing, the cover is configured to rotate in a vertical direction about a rotation fulcrum located outside the housing and above the motor to open and close the opening, The sealing member is attached to the housing or the lid and is compressed between the housing and the lid when the opening is closed by the lid. Housing structure of electric point machine.

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