JP3068579B2 - Electric point machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric switch for converting a tongue rail between a normal position and a reverse position by using a line branching device.

[0002]

2. Description of the Related Art Conventionally, as this type of electric point machine,
For example, there is one as shown in FIGS.

[0003] That is, a pair of lock pieces 2 are interlocked with the lock mechanism 1, respectively, and the pair of lock pieces 2 are disposed with their axes parallel to each other. Are formed, and each lock piece 3 is disposed adjacent to each other, disengaged from each lock notch 5, 5a of the main lock can 4 and the auxiliary lock can 4a, and each lock piece 3 is The tongue rails are engaged with the lock notches 5 and 5a to restrict the tong rail via the main chain lock 4 and the auxiliary chain lock 4a so that the tongue rails cannot be changed and positioned in the opposite position.

[0004] Such electric switches may be installed in places where space restrictions are severe, such as subways, and there is a demand for miniaturization. FIG. 14 shows the operating range (1317 mm), the stroke (230 mm), and the width (615 mm) of the main body of the electric switch, respectively, of the main lock 4 and the auxiliary lock 4a.

[0005]

However, in the conventional electric switch, the operating range of the main lock 4 and the auxiliary lock 4a is relatively wide, and the electric lock can be installed in a place where the space is severely restricted. Can not. In order to narrow the operation range, it is necessary to change the arrangement of the lock piece 2 or separately install a built-in relay (not shown) to produce another model having greatly different specifications. It is necessary to prepare two types, a model for the standard space and a model for the narrow space, and there is a problem that the production cost and the management cost increase.

The present invention has been made in view of the above-mentioned problems of the prior art. One type of one for a standard space and one for a narrow space is used without changing the components of the electric switch. Accordingly, an object of the present invention is to provide an electric pointing machine capable of reducing manufacturing costs and management costs.

[0007]

The gist of the present invention to achieve the above object resides in the following inventions. [1] In an electric pointing machine for converting a tong rail between a localization and an inversion in a line branching device, a driving mechanism (1
2), main lock can (50), auxiliary lock can (150), a pair of lock can supports (18), and a lock mechanism (40)
The drive mechanism (12) converts the tongue rail, and the main chain lock (50) and the sub chain lock (15)
0) are arranged so as to overlap each other in the vertical direction,
The main lock (50) and the secondary lock (150) are supported by the pair of lock supports (18) so as to be able to reciprocate at a predetermined stroke. ), And each of the lock notches (51, 151) when interlocked with the tong rail.
Moves between the pair of lock can support portions (18), and the lock mechanism (40) has a pair of lock pieces (41, 141) arranged in a horizontal direction, and the pair of lock pieces (41, 141) is each lock piece (45, 145)
And each of the lock pieces (45, 145) interlocks with the drive mechanism (12) so that the respective lock notches (51, 151).
When the lock pieces (45, 145) are engaged with the lock notches (51, 151), the main lock (50) and the auxiliary lock (150) are engaged. The tongue rails are irreversibly restrained in the orientation and the inversion, respectively, and the lock pieces (45, 145) are separated from each other along the reciprocating direction of the lock cans (50, 150). An electric point turning machine provided at a tip of an extension part extending to a side.

[0008]

[0009]

Next, the operation of the invention described in each of the above items will be described. According to one configuration of the present invention, when the drive mechanism (12) of the electric point machine is operated, the tongue rail is switched between the localization and the inversion. When the tongue rail is changed between the normal position and the inverted position, the lock can (50, 150) reciprocates with a predetermined stroke in conjunction with the tongue rail.

When the drive mechanism (12) operates, the pair of lock pieces (4) are linked with the drive mechanism (12).
1, 141) is disengaged from each locked part of the lock can (50, 150). When the locks (45, 145) are engaged with the locks, the tongue rails are irreversibly restrained via the locks (50, 150) in the normal position and the inverted position, respectively.

At least one of the lock portions (45, 145) of the pair of lock pieces (41, 141) is connected to each of the lock portions (45, 145) along the interlocking direction of the lock cans (50, 150).
145), it is provided at a position separated from the other side, so that the distance between the respective locked parts with which the respective locking parts (45, 145) are disengaged is reduced. The interval between the locked portions becomes narrower as the lock portions (45, 145) move away from each other. Therefore, the lock cans (50, 50) provided with the respective lock portions are reduced by the distance between the lock portions.
150) can be shortened and the lock can (5)
(0,150) in the longitudinal direction is narrowed, and the apparatus can be installed in a narrow space where restrictions are severe.

[0013] Each lock portion (45, 1) of the lock piece.
Only by changing the position of 45) and the position of each locked part of the lock can (50, 150), it is possible to cope with the size of the installation space without changing the basic component configuration.

According to another aspect of the present invention, the lock can (50, 150) comprises a main lock (50) and an auxiliary lock (150). When the (50) and the auxiliary lock can (150) reciprocate at a predetermined stroke in conjunction with the tongue rail, each of the locked parts of the main lock (50) and the auxiliary lock (150). Move between the pair of lock can supporters (18).

At least one of the lock portions (45, 145) of the pair of lock pieces (41, 141) is connected to the lock portions (45, 145) along the interlocking direction of the lock cans (50, 150).
145), it is provided at a position separated from the other side, so that the distance between the respective locked parts with which the respective locking parts (45, 145) are disengaged is reduced. Therefore, the space between the pair of lock canisters (18) is also narrowed by the narrower the space between the locked parts, so that the device can be downsized and the narrow space is severely restricted. This unit can be installed in

Further, according to another configuration of the present invention, a pair of lock pieces (41, 141) are arranged in a horizontal direction, and each lock piece (45, 145) of the pair of lock pieces (41, 141). Are engaged with the drive mechanism (12) and disengage from the lock notches (51, 151) of the main lock can (50) and the auxiliary lock can (150), respectively, and lock the lock pieces (45, 1).
45) engages with each of the lock notches (51, 151), the tong rail cannot be changed via the main lock can (50) and the auxiliary lock can (150) and is restrained in the fixed position and the inverted position, respectively. It is supposed to be.

Each lock piece (45, 145) of the pair of lock pieces (41, 141) is a lock can (50, 150).
The lock pieces (45, 14) are provided at the distal ends of the extending portions extending in a direction away from each other along the reciprocating movement direction of the lock pieces.
5) are largely separated from each other, so that the gap between the lock notches (51, 151) between which the lock pieces are disengaged is reduced. The space between the lock notches (51, 151) becomes narrower as the locks (45, 145) move away from each other. Therefore, each lock notch (51, 15)
1) The notch of each lock (5
1, 151) can be shortened, and the overall length of the lock can (50, 150) can be shortened.
The operating range in the longitudinal direction is narrowed, and the apparatus can be installed in a narrow space where restrictions are severe.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 to 6, the electric point machine main body 10 is a branching device of a line (not shown).
It is provided beside. The branching device is configured such that a tong rail (both not shown) is convertably provided on the main rail.

The point machine case 1 of the electric point machine main body 10
An operation can 30 slidably supported by 1 is connected to the tongue rail to perform a conversion operation. An installation item (not shown) is provided outside the electric switch body 10, and the operation can 30 is connected to the tong rail via the installation item.

Similarly, the switch case 11 is provided with a pair of lock can support portions 18 and a pair of lock can support portions 1.
8, the main lock 50 and the auxiliary lock 150 are supported so as to be able to reciprocate at a predetermined stroke. The main lock can 50 and the auxiliary lock can 150 are respectively disposed so as to be parallel to the operation can 30, and restrain the tong rail. Electric point machine body 10
The electric motor M is provided at one end in the switch case 11 so that the output of the electric motor M acts on the operation can 30 via the drive mechanism 12.

The electric motor M is operated by a single-phase power source.
1 for reducing the rotation speed, and comprises the following gear system.

A bevel pinion 13 is fixed to the output shaft M1 of the electric motor M, and a bevel gear 14 meshes with the bevel pinion 13. A pinion 14a having the rotation axis of the bevel gear 14 coaxial is meshed. Pinion 1
4a is meshed with an intermediate large gear 15;
5 is an intermediate small gear 15b having the same intermediate gear shaft 15a
Are meshed with the conversion gear 20.

A conversion cam member 25 is formed integrally with the conversion gear 20, and a conversion roller 26 is supported by the conversion cam member 25. A cam groove member 36 is fixed to the operation can 30 by a support block 37. An elongated cam groove is formed in the cam groove member 36, and the conversion roller 26 is movably fitted in the cam groove of the cam groove member 36 along the groove wall.

As shown in FIGS. 4 to 6 and FIG. 11, a lock mechanism 40 synchronized with the movement of the drive mechanism 12 is provided. The lock mechanism 40 restrains the tongue rail in a fixed or inverted position via the main lock 50 and the auxiliary lock 150. The main chain lock can 50 is reciprocally movable with a predetermined stroke in conjunction with the tongue rail when the tongue rail is switched between the normal position and the inverted position.

The lock mechanism 40 includes a pair of lock pieces 4.
1, 141 and the urging means 46. The pair of lock pieces 41 and 141 are extended toward the main chain lock 50 and the auxiliary chain lock 150, and further, the main chain lock 5.
0 and extending portions 42 and 142 extending in a direction away from each other along the auxiliary lock can 150. Lock portions 45 and 145, which are lock pieces, are formed at the distal ends of the extension portions 42 and 142.

On the lower surface of the main lock can 50 and on the upper surface of the auxiliary lock can 150, each lock portion 51,
151 is recessed. A pair of lock pieces 41, 1
Each of the locks 45 and 145 of 41 is disengaged from the locks 51 and 151 of the main lock 50 and the auxiliary lock 150, respectively, and the main lock 50 and the auxiliary lock 150 are connected to each other. Lock it.

The urging means 46 for urging the pair of lock pieces 41 and 141 has the same configuration, and has a rod member 47 and a compression coil spring 48. The rod member 47 includes a pair of lock pieces 41, 1
It is fixed to the point machine case 11 below the pair 41 and along the pair of lock pieces 41 and 141. Cam followers 43 and 143 are rotatably supported on the upper surfaces of the base ends of the pair of lock pieces 41 and 141, and sliders 44 and 144 are screwed on the lower surfaces of the base ends of the pair of lock pieces 41 and 141. Have been.

Each of the sliders 44 and 144 is
7 are movably fitted in the rod axial direction, and the pair of lock pieces 41 and 141 are cam followers 43 and 14 by a compression coil spring 48 wound around a rod member 47.
3 is configured to resiliently contact the cam peripheral wall of the conversion cam member 25 and relatively roll along the cam peripheral wall.

The motor drive unit 62 is configured to receive a braking command and cut off the power supply to the electric motor M upon completion of the conversion of the operation can 30. The motor drive unit 62 is configured as shown in FIG.
, Relays 71, 72, 76, 77 for connecting the single-phase AC power supply terminals BX, CX supplied from the motor power supply 61 to each winding of the motor M during the conversion operation, and a phase-advancing capacitor 74. It has.

Next, the operation of the above embodiment will be described.
Each lock part 45, 14 of a pair of lock pieces 41, 141
5 are provided at the tips of the extending portions 42 and 142 extending in the direction away from each other along the reciprocating movement direction of the lock cans 50 and 150, and the lock portions 45 and 145 are largely separated from each other. Therefore, the distance between the locked parts 51 and 151 with which the locking parts 45 and 145 are disengaged is reduced. The interval between the lock portions 51 and 151 decreases as the lock portions 45 and 145 move away from each other. Therefore, as shown in FIG. 7, it is possible to shorten the entire length of the lock cans 50, 150 provided with the respective locked parts 51, 151 by the narrower the distance between the respective locked parts 51, 151. Then, the operating range of the lock cans 50 and 150 in the longitudinal direction (12
37 mm) is narrower than the operating range (1317 mm) of the conventional lock can shown in FIG. 14, and the apparatus can be installed in a narrow space where restrictions are severe.

Each of the lock portions 45, 14 of the lock piece
Only by changing the position of the lock 5 and the positions of the respective locked portions of the lock cans 50 and 150, it is possible to cope with the size of the installation space without changing the basic component configuration.

The lock cans 50 and 150 are composed of a main lock can 50 and an auxiliary lock can 150, and the main lock 50 and the auxiliary lock can 150 are linked with a tongue rail to a predetermined length. When reciprocating with a stroke, each locked part of the main lock can 50 and the auxiliary lock can 150 moves between the pair of lock can support portions 18.

As described above, the pair of lock pieces 4
Each of the lock portions 45, 145 is provided at the tip of the perforated portion 42, 142 extending in a direction away from each other, and each of the locked portions, to which the lock portions 45, 145 are disengaged. 51,
Since the distance between the 151 locked members becomes narrow, each locked portion 51, 1
The distance between the pair of lock supporters 18 becomes narrower as much as the distance between the 51s decreases, and as shown in FIG. 7, the width (535 mm) of the electric switch is shown in FIG. It can be made narrower than the width (615 mm) of the electric switch according to the conventional example, so that the present electric switch can be made smaller. This unit can be installed in

As shown in FIG. 8A, when the tongue rail is in the locked state, for example, the lock 45 of one lock piece 41 is engaged with the locked part 51 of the main lock 50. Together, the main chain lock can 50 is locked.

When the electric motor M is started for the conversion operation, the bevel pinion 13 to the bevel gear 14 of the output shaft M1
~ Pinion 14a ~ Intermediate large gear 15 ~ Intermediate small gear 15b
The conversion gear 20 is rotationally driven by the drive mechanism 12 that reaches the position.

When the conversion gear 20 is rotationally driven, the conversion roller 26 moves along the groove wall of the cam groove of the cam groove member 36, and the operation can 30 is displaced. Thereby, one lock piece 41 in the locked state is slid and displaced in the unlocking direction. On the other hand, the lock piece 41 is disengaged from the one locked part 51 of the lock can 50 and the lock can 50 is unlocked (FIG. 8).
(B) and (c)).

As shown in FIG. 9A, at the start of the locking of the lock, when the conversion gear 20 rotates counterclockwise and the operation can 30 is driven, the conversion locking device (not shown).
The tongue rail is turned to the opposite position via the arrow (see FIG. 9B). When the tongue rail conversion is completed, the locking portion 145 of the other lock piece 141 is engaged with the locked portion 151 of the auxiliary lock can 150 and locked.

The operating state of the lock pieces 41 and 141 during the conversion operation is detected by a sensor unit not shown. The movements of the lock pieces 41 and 141 indicate the operation states of the operation can 30, the main lock 50 and the auxiliary lock 150, and the sensor unit includes the operation can 30, the main lock 50 and the auxiliary lock 50. The operation state of 150 is transmitted to a point control unit (not shown).

At the time of the conversion operation, the switching control unit outputs a braking command to the motor driving unit 62 based on the information of the sensor unit 44, and the motor driving unit 62 responds to the completion of the conversion of the operation can 30 by the relay 71, The connection to the electric motor M operated by single-phase alternating current is cut off by the operation of 72 and 73, and the rectification current is supplied to the temporary winding of the electric motor M by the operation of the relays 76 and 77 to perform excitation braking.

When changing in the opposite direction, the operation can 30 is displaced in the reverse direction, the operation starts from the displacement of the other lock piece 141, and the operation is reversed in the reverse order.

[0041]

As described above, according to one aspect of the present invention, at least one of the lock portions of the pair of lock pieces is connected to the other of the lock portions along the interlocking direction of the lock can. Is provided at a position away from the lock unit, so that the distance between each locked unit to which each lock unit is disengaged is reduced, and each locked unit , The overall length of the lock can is shortened, the operating range in the longitudinal direction of the lock can is narrowed, and the machine can be installed in a narrow space with severe restrictions.

According to another configuration of the present invention, at least one of the lock portions of the pair of lock pieces is provided at a position separated from the other of the lock portions along the interlocking direction of the lock can. Since the distance between the locked parts to which each lock part is disengaged is narrowed and the distance between the locked parts is narrowed, the distance between the pair of lock can support parts is reduced. Also narrowed,
This device can be downsized, and the device can be installed in a narrow space where restrictions are severe.

Further, according to another configuration of the present invention, each lock piece of the pair of lock pieces is provided at the tip of an extending portion extending in a direction away from each other along the reciprocating movement direction of the lock can. Since the lock pieces are widely separated from each other, the gap between the lock notches where the lock pieces are disengaged becomes narrower, and the space between the lock notches becomes narrower. In addition, the entire length of the lock can provided with each lock notch can be shortened, the operating range in the longitudinal direction of the lock can is narrowed, and the machine can be installed in a narrow space with severe restrictions.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of an electric pointing machine according to an embodiment of the present invention.

FIG. 2 is a plan view of the electric switch according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view of a main part of the electric pointing machine according to the embodiment of the present invention.

FIG. 4 is a partially exploded perspective view of the electric pointing machine according to the embodiment of the present invention.

FIG. 5 is a front view showing an arrangement of components of the electric pointing machine according to the embodiment of the present invention.

FIG. 6 is a side view showing an arrangement of components of the electric pointing machine according to the embodiment of the present invention.

FIG. 7 is an explanatory diagram of an operation of the electric pointing machine according to one embodiment of the present invention.

FIG. 8 is an explanatory diagram of an operation of the electric switch according to the embodiment of the present invention.

FIG. 9 is an operation explanatory view of the electric switch according to the embodiment of the present invention.

FIG. 10 is a circuit diagram showing a configuration of a motor driving unit of the electric pointing machine according to one embodiment of the present invention.

FIG. 11 is a perspective view of a lock piece of the electric pointing machine according to one embodiment of the present invention.

FIG. 12 is a perspective view of a lock piece of an electric pointing machine according to a conventional example.

FIG. 13 is a partial perspective view of an electric pointing machine according to a conventional example.

FIG. 14 is an explanatory diagram of an operation of an electric pointing machine according to a conventional example.

[Explanation of symbols]

 M ... Electric motor 11 ... Pointer case 12 ... Drive mechanism 13 ... Bell pinion 14 ... Bevel gear 14a ... Pinion 15 ... Intermediate large gear 15a ... Inter-gear shaft 15b ... Intermediate small gear 18 ... Lock can support 20 ... Conversion gear 25 Conversion cam member 26 Conversion roller 36 Cam groove member 37 Support block 40 Lock mechanism 41, 141 A pair of lock pieces 42, 142 Extension parts 43, 143 Cam followers 44, 144 Slider 45, 145 each locking part 46 ... urging means 47 ... rod member 48 ... compression coil spring 50 ... main chain locking can 51,151 ... each locked part 62 ... motor driving part 145 ... locking part 150 ... sub Chain lock

Claims (1)

(57) [Claims] 1. An electric switch for converting a tongue rail between a normal position and a reverse position by a line branching device, comprising: a driving mechanism, a main chain lock, a sub chain lock, a pair of chain lock support parts, and A locking mechanism, wherein the driving mechanism converts a tongue rail, the main lock and the auxiliary lock are each arranged so as to overlap in a vertical direction, and the pair of lock can support portions. The main lock and the secondary lock are each provided with a lock notch, and each of the lock notches is linked to a tongue rail when the lock notch is interlocked with the tongue rail. The lock mechanism moves between a pair of lock can support parts, the lock mechanism has a pair of lock pieces arranged in a horizontal direction, the pair of lock pieces has each lock piece, and the drive mechanism In conjunction with the above, each lock piece is cut out of each lock When the lock pieces engage with the lock notches, the tongue rails cannot be changed via the main lock and the auxiliary lock and are restrained at the orientation and the inversion, respectively. The electric lock machine is characterized in that each of the lock pieces is provided at a tip of an extending portion extending in a direction away from each other along a reciprocating movement direction of the lock can.