JP3176420U - Loom contact points - Google Patents

Abstract

Provided is a loom contact rod having a structure that can be easily manufactured even if it is long.
A contact rod has a conductive core. In a state where one side edge of the core is exposed and the other side edge is included, a conductive frame surrounds the core via an insulating sheet. The core is formed in an elongated shape by connecting a plurality of core constituent members 4 a, 4 b, 4 c, and is connected by a connecting portion 14.
[Selection] Figure 2

Description

  The present invention relates to a contact rod used for detecting yarn breakage of a loom.

  Conventionally, as the above contact rod, there is one disclosed in, for example, Japanese Patent Publication No. 7-860 shown in Patent Document 1. In this contact rod, for example, a plurality of teeth are formed on one side edge of an intermediate plate made of brass. The both side surfaces and the other side edge of the intermediate plate are covered with a single insulating sheet in a state where a part below the teeth is exposed. An intermediate plate and an insulating sheet are inserted from the other side edge side of the intermediate plate into a stainless steel outer plate having a U-shaped vertical cross section so as to come into contact with the intermediate plate via the insulating sheet. In this inserted state, the end portion on the one side edge side of the outer plate is on the insulating sheet and is not in contact with the middle plate.

Japanese Patent Publication No.7-860

  This contact rod is installed under the warp of the loom so as to be orthogonal to the warp, and is inserted so that the conductive dropper is in contact with the outer plate. A power source and a detection circuit are connected between the middle plate and the outer plate, and when the warp is cut, the dropper falls into the gap between the teeth and is locked, and the dropper comes into contact with the middle plate. Thus, the detection circuit detects that the middle plate and the outer plate are electrically connected via the dropper, and as a result, it is determined that the warp yarn has been cut.

  A number of droppers are installed along the length direction of the contact rod, but in recent years, there is a tendency to increase the number of warp yarns in the loom, and the length of the contact rod is also long. Therefore, the middle plate and the outer plate are also long. When a large number of teeth are formed on one side edge of the elongated intermediate plate, the intermediate plate warps in a circular arc shape where one side edge side on which the teeth are formed is convex. It has been quite difficult to insert the warped intermediate plate into the outer plate while correcting the warp, and it has been difficult to manufacture the intermediate plate.

  An object of the present invention is to provide a contact rod for a loom having a structure that can be easily manufactured even if it is long.

  The contact rod of the loom according to one aspect of the present invention has a core formed in a conductive belt shape. The core can be made of, for example, brass. In a state where one side edge of the core is exposed and the other side edge is included, a conductive frame surrounds the core around the core via an insulating sheet. As the frame, for example, a stainless steel frame can be used. A detecting means and a power source are connected between the frame and the core. The core is formed in a long shape by connecting a plurality of strip-shaped core constituent members, and the core constituent members are connected by a connecting member. Along with this, the frame and the insulating sheet are also elongated.

  In the contact rod configured in this way, the core is configured by connecting a plurality of core components, so there is no need to make the core component itself long, and even if a plurality of teeth are formed, There is no warping and the manufacturing is easy. In addition, since each core component member is connected by a conductive connecting member, even if the dropper contacts any part of the core component member, the electrical connection between the core and the frame is reliably ensured. can do.

  The connecting member may be formed in a substantially U shape having legs at both ends of the horizontal portion using a conductive material. In this case, the two core constituent members to be connected are brought into contact with each other at the end portions to be connected, and a recess is formed on each of the other side edges of the end portions in contact with each other. ing.

  If comprised in this way, not only the electrical connection between core component members will be performed by a connection member, but the mechanical connection between core component members will also be performed simultaneously by a connection component member, and electrical connection makes this contact 桿You won't be cut off while using it.

  Furthermore, the U-shaped connecting member can be formed in a shape complementary to the shape of the recess. If comprised in this way, since a connection member and the shape of a recess completely correspond, the electrical connection and mechanical coupling | bonding between core structural members become stronger.

  A plurality of teeth can be formed on one side edge of the core component. If comprised in this way, even if it makes a core elongate, since a core structural member is short compared with a core, even if it forms a tooth | gear, a core structural member does not warp.

  As described above, according to the present invention, a long contact rod can be easily manufactured.

It is the front view and side view of the contact rod of one Embodiment of this invention. It is a front view of the core used with the contact rod of FIG. It is a figure which shows the various modifications of the connection member currently used in FIG.

  The contact rod 2 according to one embodiment of the present invention has a core 4 as shown in FIG. The core 4 is made of a conductive material such as brass and has a long rectangular shape, and has a length of about 4 m, for example. A large number of teeth 6 are formed at predetermined intervals on one side edge of the core 4. On the other edge side of the both ends of the core 4, engagement holes 8 and 8 for attachment are formed, respectively.

  As shown in FIG. 1 (b), an insulating sheet 10 having a U-shaped side surface extends toward both surfaces of the core 4 with the other edge side of the core 4 as a bottom, and the tip thereof is a tooth. It is in a position somewhat below 6 and is in contact with both sides of the core 4. That is, the insulating sheet 10 serves the bottom side of the core 4. As shown in FIG. 1A, the insulating sheet 10 is a long one that extends from a position slightly inside from one end of the core 4 to a position slightly inside from the other end. is there.

  Further outside the insulating sheet 10, a frame 12 having a U-shaped side surface extends toward both surfaces of the core 4 with the other edge side of the core 4 as the bottom, and the tip of the frame 12 extends from the insulating sheet 10. It is in a position somewhat below the tip of 10. The frame 12 is also made of a conductive material, for example, stainless steel. The frame 12 is in contact with the core 4 via the insulating sheet 10 as shown in FIG. One end of the frame 12 is a long one extending from a position somewhat inside the one end of the insulating sheet 10 to a position somewhat inside the other end of the insulating sheet 10. The contact rod 2 is manufactured by inserting the core 4 surrounded on the bottom side by the insulating sheet 10 into the inside from the opening at the tip of the frame 12.

  A detection circuit and a power source are connected to the core 4 and the frame 12, but since both are insulated by an insulating sheet, no current flows through the detection circuit. In this state, the contact bar 2 is installed below a number of warp yarns of the loom so as to be orthogonal to the warp yarns, and is inserted in association with each warp yarn so that the conductive dropper is in contact with the frame 12. When any warp breaks, the dropper associated with the cut warp falls into the gap between the teeth 6 and is locked, and the dropper comes into contact with the core 4 so that the core 4 passes through the dropper. And the frame 12 are electrically connected, and this connection is detected by the detection circuit, and as a result, it is determined that the warp is broken.

  As described above, the core 4 is as long as about 4 m. When the teeth 6 are formed in a long state, the core 4 is convexly curved in an arc shape on one edge side where the teeth 6 are formed. Therefore, as shown in FIG. 2, the core 4 is formed by connecting a plurality of, for example, three core constituent members 4a, 4b, and 4c. Each core component member 4a, 4b, 4c is formed in the rectangular shape of the length which does not warp even if the tooth | gear 6 is formed, and the tooth | gear 6 is formed in each one side edge. An engagement hole 8 is formed at one end of the core component member 4a, and the other end is an edge perpendicular to the length direction of the core component member 4a. The edge of the core component member 4b is also perpendicular to the length direction. It is in contact with one of the ends. The other end of the core constituent member 4b and the one end of the core constituent member 4c are similarly configured and are in contact with each other. That is, the adjacent end portions are brought into contact with each other between the core constituent members 4a, 4b, and 4c.

  If the adjacent ones of the end portions of the core constituent members 4a, 4b, and 4c are simply brought into contact with each other in this way, there is a possibility that the contact is released after the core constituent members 4a, 4b, and 4c are inserted without the frame 12. is there. In this case, even if the warp yarn is cut, the cut cannot be detected. Therefore, the core constituent members 4a, 4b, and 4c are connected by the connecting members 14 and 14 so that the electrical connection between the core constituent members 4a, 4b, and 4c is maintained.

  The connecting member 14 has a concave shape in which legs 14b and 14b are provided integrally with the horizontal portion 14a at both ends of a rectangular horizontal portion 14a so as to be orthogonal to the horizontal portion 14a. It is made of the same brass as the constituent members 4a, 4b and 4c. The thickness of the connecting member 14 is the same as or slightly thicker than the core constituent members 4a, 4b, and 4c. In order to insert these connecting members 14, 14, an L-shaped notch 16a is formed on the other side edge of the other end of the core component 4a and the end of the core component 4b, and the core component 4b. An inverted L-shaped notch 16b is formed on the other end of the one end of the core component member 4c and the other end of the core component 4c. The shape of the adjacent L-shaped notch 16a and the inverted L-shaped notch 16b is complementary to the shape of the connecting member 14, and the connecting member 14 is connected to the adjacent L-shaped and inverted L-shaped notches 16a and 16b. Are completely matched and there is no portion protruding from the other edge of each core component member 4a, 4b, 4c.

  In this inserted state, even if an outward force is applied along the length direction between the core constituent members 4a and 4b, the legs 14b are provided, so that mechanical coupling and electrical connection are disconnected. Similarly, in the core constituent members 4b and 4c, the mechanical coupling and electrical connection are not released. Therefore, when inserting each core component member 4a, 4b, 4c into the frame 12, the connecting members 14, 14 are not detached, and after being inserted into the frame 14, the connecting members 14, 14 are not attached to both of the frames 12. Since it is in contact with the inner surface, it will not come off. Therefore, even if the core 4 is long, the core 4 is not warped, and the contact rod 2 can be easily manufactured. Further, when any of the core constituent members and the frame 12 are connected by the dropper, the other core constituent members can be connected not only to the contact surface at the end of the core constituent member but also via the connecting member 14. Since a current flows, the electrical resistance of the contact 2 is not increased compared to the case where a single core is used.

  Note that the shape of the connecting member 14 is not limited to that illustrated in FIG. 2, and may be various shapes as illustrated in FIGS. 3A to 3D, for example. In FIG. 2A, the tip of the leg portion 14b of the connecting member 14 is arcuate. In FIG. 5B, the width of the horizontal portion 14a and the leg 14b (the length in the length direction of the core constituent members 4a, 4b, 4c) is increased instead of the length of the tip of the leg 14b being shortened. Has been. In FIG. 4C, the inner edge portions of the leg portions 14b and 14b are configured to incline from the tips toward the center side of the horizontal portion 14a. In FIG. 4D, the connecting member 14 is formed in a drum shape that expands from the center toward both sides, and the notches 16a and 16b are contact end portions of adjacent ones of the core constituent members 4a, 4b, and 4c. Is formed so as to coincide with the drum shape of the connecting member 14.

  In the above embodiment, the three core constituent members 4a, 4b, and 4c are used. However, the number is not limited to three, and two or more members can be used. Moreover, although each core structural member 4a, 4b, 4c is made of brass and the frame 12 is made of stainless steel, it is not limited to these, and various materials can be used as long as they are conductive materials. it can.

2 Contact point 4 Core 4a, 4b, 4c Core component 10 Insulating sheet 12 Frame 14 Connecting member

Claims (4)

A core formed into a conductive band;
With one side edge of the core exposed and the other side edge encapsulated, a conductive frame that is in contact with and surrounds the core via an insulating sheet,
The core is configured by connecting a plurality of strip-shaped core constituent members to be long, and each core constituent member is a contact rod of a loom connected by a conductive connecting member.   2. The contact rod for a loom according to claim 1, wherein the connecting member is formed of a conductive material in a substantially U shape having legs at both ends of the horizontal portion, and the two core constituent members to be connected are connected. Contact points of a loom, in which recesses into which the connecting members are fitted are formed on the other side edges of the contacted ends.   The contact rod of the loom according to claim 2, wherein the U-shaped connecting member is formed in a shape complementary to the shape of the recess.   4. A contact rod for a loom according to claim 1, wherein a plurality of teeth are formed on the other side edge of the core.

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