JPS60121172A - Indexing electric switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an indexing electric point switch having an unauthorized unlocking prevention mechanism that can reliably prevent unlocking from an unauthorized outsider from the rail side.

BACKGROUND TECHNOLOGY An indexing electric switch is capable of moving a vehicle without damaging the switch mechanism when a vehicle approaches from the opposite side of a turnout point where traffic is not open. Due to the force acting on the wheel flange, the tongue rail is automatically switched (indexed) to open the point and allow the vehicle to pass safely. Conventional examples of indexing electric point machines include those that use a gellench and those that have an indexing mechanism built into the switch body, and these are shown in Figures 1 and 2. The indexing operation will be briefly explained.

First, Figure 1 shows an example of using Gelenk, and the vehicle is on the back side of the point where it is not open, that is, the basic rail LA, IB.
When the vehicle advances on the basic rail IB and the opening side tongue rail 2A of the tongue rails 2A and 2B, the opening side tongue rail 2A is pushed toward the basic rail IA by the flange portion of the wheel.

As a result, the roughly Y-shaped gel lever 4, which is linked to the tips of the respective tongue rails 2A and 2B via the links 3A and 3B, rotates counterclockwise in the figure about the fulcrum A. Accompanying this rotation of the gear lever 4, the tongue rails 2A, 2B move to perform indexing. In addition, the normal electric conversion operation is performed by moving the tie bar 5 from the operation frame (not shown).
．． A force is applied to the opening side tongue rail 2A via the connecting plate 6 to rotate the gel lens 4.

On the other hand, in the case of the point machine body shown in Fig. 2 with a built-in indexing mechanism, two operating frames 11 and 12 are provided and connected to the tongue rails 2A and 2B, respectively, and the opening side tongue rail 2A is connected to the wheel. When pushed toward the basic rail IA side by the flange part, one of the operating frames 11 connected to the tongue rail 2A
move in the same direction.

This movement of the operating frame 11 causes the conversion gear 14 and the cam 15 to rotate via the conversion roller 13, and the other operating frame 12 that engages with the conversion roller 13 moves together with the operating frame 11 in the same direction as the operating frame 11. do. Since the operating frame 12 is connected to the close-contact side tongue rail 2B, the close-contact side tongue rail 2B moves in a direction away from the basic rail IB, and the changeover or indexing of the tongue rails 2A and 2B is performed.

In conventional switch machines having the above-mentioned indexing mechanism, the toggle spring 7 in the one shown in FIG. As shown in Fig. 2, there are two movement frames 11.
A compression spring 16 is provided between the two to provide resistance to movement of the operating frame 11, 12. In the latter case, even if one operating frame 11 connected to the opening side tongue rail 2A moves, the other operating frame 12 will move away from the escape cam surface 12A area of the operating frame 12 formed concentrically with the conversion gear 14. Until the conversion roller 13 is removed, it remains in a locked state and does not move.1. Compression of the compression spring 16 provides resistance to movement of the operating frame 11.

However, in the conventional unauthorized unlocking prevention mechanism, the spring force of the toggle spring or compression spring is stronger than the force caused by the vibration of a passing vehicle, preventing unauthorized unlocking, but if a person intentionally uses a lever etc. When you try to move the rail, it easily unlocks.

To prevent this, the spring force of the 1-guru spring or compression spring can be strengthened, but in the conventional structure, the spring force acts even during normal electric conversion operation, so it is necessary to increase the load on the motor. This results in an increase in the power of the motor and an increase in power consumption, which is economically disadvantageous.

<Purpose of the Invention> The present invention has been made in view of the above-mentioned circumstances, and by adopting a structure in which a strong spring force acts only during indexing operation, it is possible to prevent not only vibrations of passing vehicles but also fraud caused by human mischief. To provide an indexing electric switch machine having an unauthorized unlocking prevention mechanism that does not unlock even in response to external force and does not increase the load on the motor during normal electric switching operation.

<Summary of the Invention> For this reason, the first invention includes an electric conversion mechanism that converts the tongue rail via an operating rod using power from a motor, as well as an electric conversion mechanism that converts the tongue rail by an external force from the opening side tongue rail that is separated from the basic rail. In an indexing electric point machine having an indexing mechanism in which an operating rod slides to change a tongue rail, the sliding member is arranged to be slidable in the same direction as the sliding direction of the operating rod; an elastic member that connects the operating rod and is arranged to be expandable and retractable in the sliding direction of both; a locking means that locks the sliding member in a non-sliding state when the tongue rail conversion is completed; A first unlocking means for unlocking the locking means, and a second unlocking means for unlocking the locking means before the movement rod starts sliding during the electric conversion operation.

Further, in a second invention, in addition to the configuration of the first invention, a notch opening of the operating rod is provided with a switching roller of an electric conversion mechanism rotated by power from a motor, which is held at the time of electric conversion. A tapered surface that expands toward the opening direction is provided.

<Example> The present invention will be explained in detail below.

FIG. 3 to FIG. 9 show the structure of an embodiment in which a gel lens is used.

In the figure, 21A and 21B are Isamoto rails and 22A.

22B is a tongue rail, 23 is a diamond-shaped gelenku,
Rotatably supported by a support shaft 24, links 25A, 25B
It is linked to each of the tongue rails 22A and 22B via the rod 26, and is connected to the point machine body 3 via the rod 26.
0 is connected to an operating rod 38, which will be described later. At the link connecting portions of the tongue rails 22A, 22B, one end of the rods 27, 28 is connected to locking rods 42, 43 (described later) of the switch main body 30, and the other ends of the rods 27, 28 are connected to the links 25A, 25B and the bins 25C, 25D. are connected by.

Next, the configuration of the main body of the point machine is shown in FIGS. 4 and 5.

Power from the motor 31 is transmitted from a pair of bevel gears 32 to a pinion 34 via a friction clutch 33, thereby rotating a conversion gear 35 that meshes with the pinion 34. 39 is a hand-cranked handle for manual use. The conversion gear 35 has a predetermined cam surface 3 on its upper surface.
A cam 3G having a diameter of 6A is provided integrally with the conversion gear 35, and a conversion roller 37 is provided on the lower surface. The conversion roller 37 is connected to the notch 3 formed in the above-mentioned operating rod 38 disposed on the lower surface side of the conversion gear 35 during the current electric conversion operation.
It is provided at a position where it meshes with 8A. The cutout portion 38A
An escape cam surface 38a is provided concentrically with the conversion gear 35. Also, a tapered surface 38c that expands in a trumpet shape toward the opening side of the escape cam surface 38a.
It is formed. 40.41 is the operating rod 38 and the locking rod 4
2.43 is the lock piece that locks the spring 44.
45, the operating rod 38 and the locking rods 42 and 43 are always in the downward direction (downward in the figure) (=J force). The first rollers 4oA, 41A and the operating rod 3 at the end of the conversion
8, and 20th lugs 40B and 41B that come into contact with an end surface of a retaining plate 51, which will be described later, are provided.

Therefore, lock piece 40. '41 20th-La 40B
, 41B serve as locking means for the holding plate 51, the inclined surface 38b of the operating rod 38 serves as a first unlocking means, and the cam 36 and the first rollers 40A, 41A constitute a second unlocking means.

In addition, a notch groove 46 provided in the locking rod 42, 43 is provided in the middle part.
A locking element 47 that engages when the locking rod is locked is provided, and the locking element 47 is prevented from being pulled out from the notched groove 46 by the movement of the lock piece 40.41 being pushed upward in FIG. The lock rods 42 and 43 are unlocked by the lock levers 42 and 43.

Reference numeral 50 designates a compression spring as an elastic member that resists the movement of the operating rod 38 during indexing operation and has a stronger spring force than the conventional one to prevent unauthorized unlocking. It is held by a holding plate 51 as a sliding member that can freely slide.

Details of this compression spring holding structure are shown in FIGS. 6 to 9. That is, a guide 52 is provided in the motion field 38 to slide the holding plate 51 through the square hole 38d and square groove 38e for housing the compression spring 50.

Further, on the holding plate 51 side, a square hole 51a having the same shape as the motion field 38 is provided.
A square groove 51b is formed. And Guy F from the movement world 38
Insert the holding plate 51 between the square holes 38d and 51a.
A compression spring 50 is held inside via a pair of spring receivers 53 and 54. The pair of spring receivers 53
．． 54 is the square groove 38e of the motion field 38 and the square groove 5 of the holding plate 51.
1 b, and has square medium-shaped support portions 53A and 54A supported within the square groove portion 55 formed by the support portion 5.
3Δ.

On the opposing side opposite to 54A, one spring receiver 54 is formed with a tubular portion 54B, and the other spring receiver 53 is formed with a rod-shaped portion that can fit into the inner diameter of the tubular portion 54B. 53B is formed.

Next, the effect will be explained.

First, a case will be described in which the vehicle enters the turnout from the rear side (upper side in FIG. 3) and indexes the tongue rail.

In this case, the vehicle is running on the basic rail 21A and the opening-side tongue rail 22B, and as the vehicle approaches the point, the tongue rail 22B is pushed toward the basic rail 2113 by the wheel flange of the vehicle.

As a result, the gel lens 23 rotates around the support shaft 24 in the indexing direction (counterclockwise in the figure), so the gel lens 23
The motion field 38 connected to the rod 26 via the rod 26 also slides in the indexing direction (rightward in FIG. 4). During the sliding operation of the operating field 38, the holding plate 51 assembled to the operating field 38 does not move at the initial stage of sliding because its end surface contacts and is locked with the 20th lug 40B of the lock piece 40. Since the indexing force on the vehicle side is greater than the spring force of the compression spring 50, only the operating field 38 slides due to the indexing force, and the operating field 38 and the holding plate 50
Square hole 38d.

5] Compression spring 5
0 is compressed. On the other hand, when the motion field 38 slides,
The inclined surface 38b allows the lock piece 40 to be moved to the fourth position through the 20th lug 40B against the spring force of the spring 44.
Push upward in the figure. And the 20th-ra 40B
When the center of the rotation axis of is pushed up above the upper end position of the retaining plate 51, the locking force of the 20th lug 40B to the retaining plate 51 is released, so that the retaining plate 51 absorbs the spring force of the compressed compression spring 50. Based on this, it slides in the indexing direction together with the motion field 38, and the indexing operation is completed. Incidentally, when the opening side winter rail 22'B comes into close contact with the basic rail 21B and the indexing is completed, the state of the lock pieces 40 and 41 is reversed to that shown in FIG. 41B is in contact with the inclined surface 38b on the left side in the figure of the operating field 38 and the end surface of the holding plate 51.

Further, the lock ring 42 that was in the locked state before indexing is unlocked by the action of the lock piece 40 being pushed upward in FIG. 4, and the lock ring 43 that was in the unlocked state is locked. The piece 41 is locked after the indexing operation by moving it downward in FIG.

Next, we will explain the electric conversion operation between the two.

The rotational force from the motor 3I is transmitted to the conversion gear 35 via a pair of bevel gears 32, a friction clutch 33, and a pinion 34, and the conversion gear 1-35 rotates clockwise in FIG. 4. Then, the cam 36 and the conversion roller 37 rotate together with the conversion gear 35, and while the conversion roller 37 passes the escape cam surface 38a of the operating field 38, the cam 3
G causes the lock piece 40 to be pushed upward in FIG. 4 via the 10th roller 40A. When the lock piece 40 is pushed upward, the lock ring 42 is unlocked and the lock piece 40 is moved to the 20th position relative to the retaining plate 51.
- The locking force of La 40B is released.

As a result, the rotation of the conversion gear 35 causes the conversion roller 37 to
When the notch 38A of the motion field 38 engages with the motion field 38 and the motion field 38 slides to the right in FIG. There is no compression operation of the compression spring 50, and the conversion operation of the input rails 22Δ, 22B can be performed as is. Therefore, during normal electric conversion operation, the compression spring 50 is unrelated to the motor 3I, and even if the spring force is set strong, the load on the motor 31 will not increase. As long as the spring force of the compression spring 50 does not exceed the indexing force exerted by the vehicle, it is possible to set the spring force to be much stronger than before without hindrance to the indexing operation.

According to the indexing electric board ironing machine having such a configuration, when an external force is applied from the opening tongue rail side, it is necessary to compress the compression spring 50 as described above;
During normal electrical conversion, the compression spring 50 has no relation to the motor 31, and no matter how strong the spring force is set, the load on the motor 31 will not increase. Since the indexing force caused by the vehicle is larger than the generally assumed external force caused by human mischief, the spring force of the compression spring 50 can be set to be larger than the external force caused by the human within a range smaller than the indexing force. To reliably prevent a switch machine from being unlocked due to unauthorized external force such as mischief, without increasing the load on the motor.

By the way, in the switch machine of this embodiment, when the electric conversion operation is completed, the conversion roller 37 is removed from the notch 38A of the operating ring 38, so that the electric connection from the conversion gear 35 to the motor 31 is removed during the indexing operation. The indexing load is reduced by preventing the conversion mechanism from rotating.

In addition, when a vehicle approaches a turnout from the back side and indexes the tongue rail, if the leading wheel does not pass through the turnout and stops in the middle of the l/ng rail and moves backward, the operating ring 38 is moved in the middle of the turning operation. With the conventional notch shape of the operating ring, there is a risk that the conversion roller will not mesh well with the notch during the electric conversion operation.

Therefore, in this embodiment, a tapered surface 38c is formed in the opening of the notch 38A of the operating ring 38, so that no matter where the operating ring 38 is, the conversion l cola 3
7 is ensured to mesh with the notch 38A.

Next, a second embodiment is shown in FIGS. 10 and 11. Incidentally, the same parts as in the first embodiment are given the same reference numerals and the explanation thereof will be omitted. This embodiment shows an example of application in which two operating rings are used without using a gel ring.

That is, the operating rings 3 are attached to the tongue rails 22A and 22B, respectively.
8.38' is connected via rod 26.26'. Each operating ring 38, 38' has a respective notch 38A.

38'A, escape cam surface 38a, 3B'a,
11 Slope 38b, 3B'b, Taber surface 38c, 38'
c and a square hole 38d for supporting the compression spring 50.
, 38'd and a square groove for supporting the spring receiver (not shown)
is formed similarly to the first embodiment. Furthermore, the operating ring 38.38° of this embodiment is provided with a ring for controlling the sliding of the operating ring 38.38" by contacting the 20th-rings 40B and 41B of the mouth/took piece 40.41 at the initial stage of the indexing operation. Vertical surfaces 38f and 3B'f are formed.

In this embodiment, depending on the position of the tongue rails 22A and 2213, one of the operating fields 38.38" is the first.
It is configured to function as the retaining plate 51 of the embodiment, and therefore, the inclined surfaces 38b, 38°b and the vertical surface 38''.

38'r are formed at respective target positions.

In this configuration, in the case of indexing operation, the operating ring 38 connected to the opening side tongue rail 22B slides first. At this time, the operating ring 38' connected to the contact side tongue rail 22A does not move because its vertical surface 38'f is in contact with the 20th lug 40B of the lock piece 40, and both operating rods 3B, 38' A displacement occurs, and the compression spring 50 is compressed. When the lock piece 40 is pushed up by the slide of the operating ring 38 and the center of the rotational axis of the 20th ring 40B is above the upper surface position of the operating ring 38° in the figure, the restriction of the operating ring 38' by the lock piece 40 is released. So,
The two operating rings 38.degree. 38' can slide together to effect a changeover of the one-ring rails 22A, 22B. In this example of operation, the operating ring 38'' acts as the holding plate 51 of the first embodiment.

On the other hand, in the normal electric conversion operation, the rotation of the motor 31 moves the conversion roller 37 into the operating ring 3, as in the first embodiment.
When the lock piece 40 engages with the notches 38A and 3B'A of B and 38' and passes the escape cam surfaces 38a and 38'a, the locking rod 42 of the movement field 38' is no longer restricted by the lock piece 40. As the conversion roller 37 rotates, the operating ring 3
8.38' slide together, allowing the tongue rails 22A, 22B to switch without compression of the compression spring 50.

<Effects of the Invention> As described above, according to the present invention, the expansion and contraction of the spring is required during the indexing operation, but there is no expansion and contraction of the spring during the electric conversion operation of energization, so the load on the motor does not increase. The spring force can be set to a large value without causing problems. Therefore, even if the resistance to illicit external force caused by mischief or the like is increased, there is no need for a power amplifier for the motor, and there is no increase in power consumption, which is very economically advantageous.

Further, according to the second invention, even when the operating rod is stopped at an intermediate position of the switching operation, the conversion roller of the electric conversion mechanism can be reliably engaged with the notch of the operating rod.

[Brief explanation of drawings]

Figures 1 and 2 are main part configuration diagrams of the conventional example, and Figure 3
The figure is a block diagram showing the first embodiment of the present invention, Figure 4 is a block diagram of the main parts inside the switch body of the same embodiment, Figure 5 is a right side view of Figure 4, and Figure 6 is Fig. 7 is an enlarged perspective view of the holding plate attachment part during operation, Fig. 8 is an enlarged view of the compression spring holding part, and Fig. 9 is a cross section taken along the line A-A in Fig. 8. 10 is a main part configuration diagram showing a second embodiment of the present invention,
FIG. 11 is a right side view of FIG. 10. Grail Imperial Decree...Gerenku 31...Motor 35...
... Conversion gear 36... Cam 37... Conversion roller 38. 38゛... Operating rod 38A, 38"^... Operating rod 38b, 3B'b... Inclined surface 38f, 38'f
... Vertical surface 40, 41 ... Lock piece 40A,
41A...10th-La, 40B, 41B...2nd
0-Ra 44.45...Spring 50...Compression spring 51...Retaining plate/Patent applicant Nippon Signal Co., Ltd. Agent Patent attorney Fujio Sasashima 11th Ward

Claims (1)

[Claims] +111- In addition to an electric conversion mechanism that converts the tongue rail by sliding a movement lever connected to the tongue rail using power from a motor, the wheel is moved through the opening side tongue rail that is separated from the dead tree rail. In an indexing electric shaft machine having an indexing mechanism that causes the operating rod to slide and change the tongue rail when an external force is applied from a flange portion, the operating rod is provided so as to be slidable in the same direction as the sliding direction of the operating rod. an elastic member that connects the non-slidable state and the operating rod and is arranged to be expandable and retractable in the sliding direction of both; and a locking means that locks the slide member in the non-slidable state when the tongue rail conversion is completed. a first unlocking means for unlocking the locking means in the middle of sliding the operating rod when the operating rod is actuated by an external force from the opening side tongue rail; and a first unlocking means for unlocking the locking means during the movement of the operating rod when the operating rod is actuated by an external force from the opening side tongue rail; An indexing electric shafting machine, characterized in that it is further provided with a second unlocking means for unlocking the locking means. (2+ In addition to the electric conversion mechanism that slides the operating rod connected to the 1-ng rail using power from the motor to convert the 1-ng rail, the movement from the wheel flange via the opening-side tongue rail that is separated from the basic rail is also possible. In an indexing electric shaft machine having an indexing mechanism that causes the operating rod to slide and change the tongue rail when an external force is applied, a slide i is provided to be slidable in the same direction as the sliding direction of the operating rod. a member, an elastic member that connects the slide member and the operating rod and is arranged to be expandable and retractable in the sliding direction of both, and a locking means that locks the slide member in a non-slidable state when the conversion of the tongue rail is completed. a first unlocking means for unlocking the locking means in the middle of sliding the operating rod when the operating rod is actuated by an external force from the opening-side tongue rail; and a second unlocking means for unlocking the locking means, and the switching roller of the electric conversion mechanism rotated by power from the motor engages in the notch opening of the operation frame during electric conversion. , an indexing electric point machine characterized by being provided with a tabular surface that expands toward the opening direction.