JP3165868U - Ball chain connection jig - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ball chain connecting jig capable of easily connecting a ball chain. SOLUTION: A connecting ball C is held by a concave connecting holding portion 31. While inserting and engaging the large diameter portion B1 of the connector B located at the end of the ball chain X to be connected into the opening C1 of the connecting ball C, the end holding portion 32 is engaged with the end of the ball chain X. The ball A to be positioned is inserted, and the ball A is pressed and fixed by the ball pressing portion 3C. The pair of gripping portions 2A are gripped, the connecting ball C is crimped until the opening C1 is closed, the connector B is prevented from coming off from the connecting ball C, and the ball chain X is connected. It is not necessary to hold the end of the ball chain X for work, and the ball chain can be easily connected. [Selection diagram] FIG. 12

Description

  The present invention relates to a connecting jig for connecting a ball chain in which a plurality of balls are connected.

The ball chain that connects multiple balls is widely used, such as those for attaching pocket watches, those used as necklaces for attaching ornaments such as pendants, and those used for drive transmission provided on conveyors, blinds, etc. (See, for example, Patent Documents 1 and 2).
The ball chain has a known structure in which a metal ball having a hollow spherical shape and a pair of through holes in the radial direction is connected by a connector having an elongated rod shape and both ends in the longitudinal direction having a large diameter. (For example, refer to Patent Document 3).

JP-A-10-159467 Japanese Utility Model Publication No. 2-68715 JP 2009-95402 A

The ball chain may be cut by a large external force acting on the ball chain connected by the connector, causing the ball to be crushed or a large pulling force acting to pull the connector from the through hole of the ball. .
In this case, a crushed ball is removed or repaired using a tool such as a pliers or a small grinder. Furthermore, the ball chain separated by removing or removing the ball, or the connectors at both ends of the cut ball chain are engaged with the repaired ball or the tubular member for repair, respectively, and the ball or tubular member is crimped. Connect. Since such a ball chain repairing operation is a manual operation using a work jig, the operation is extremely complicated, and skill required for the operation is required. In addition, not only repairing a broken ball chain or repairing a crushed ball, but also extending the length by adding a chain, or connecting both ends of a ball chain into an annular shape is also extremely complicated. Must be connected manually.

  In view of the above, an object of the present invention is to provide a ball chain connecting jig capable of easily connecting a ball chain.

The ball chain connecting jig of the present invention is a connecting jig for connecting the ends of a ball chain in which a plurality of hollow spherical balls are connected by a connector having a large diameter portion at both ends in the axial direction,
A pair of gripping portions gripped by an operator, and a processing portion provided at an end portion of these gripping portions, wherein the processing portion is located at at least one end portion of a ball chain to be connected, and the connector is A concave end holding portion for holding the protruding ball, and a connector protruding from the ball at the end of the ball chain and the other end of the connecting ball chain provided adjacent to the end holding portion. A concave connection holding part for holding a connection ball having an opening for inserting and engaging a connector protruding from a positioned ball;
The connection holding portion is provided so as to be close to and away from the connection holding portion, and the connection balls held by the connection holding portion are swaged to close the opening portions to prevent the connectors from coming off and to connect. And a caulking portion for connecting the end portions of the ball chain.

According to such a configuration, when the end portions of the ball chain are connected, the ball that is located at at least one end portion of the connected ball chain and from which the connector protrudes is held by the end portion holding portion. A connection ball having an opening is held in the connection holding portion adjacent to the end holding portion. The connectors protruding from the balls on both ends of the ball chain to be connected are inserted into and engaged with the openings of the connecting balls. In this state, grip the gripping part, bring the crimping part close to the connection holding part, crimp the connecting ball, close the opening, and prevent the end of the ball chain from coming off. Link.
As described above, according to the present invention, at least one end of the ball chain is held by the end holding portion, and the connecting ball in a state in which each connector of the connecting ball chain is engaged is also held. For this reason, after holding the end part of the ball chain to be connected and the connecting ball, the operator only needs to hold the holding part in order to crimp the connecting ball, and the ball chain can be connected easily. Furthermore, it is a simple structure having a structure for holding the end of the ball chain to be connected and the connecting ball and a structure for crimping the connecting ball, and is a small-sized jig that allows an operator to work with one hand without increasing the size. A jig that can be provided as a tool and can be easily manufactured in a small size and light weight can be provided.

In the ball chain connecting jig according to the present invention, the pair of gripping portions are pivotally connected to each other by a rotation shaft, and the processing portion is positioned on a distal end side of the rotation shaft in the gripping portion. It is preferable to be provided.
According to such a structure, a process part is provided in the front end side with respect to the rotating shaft which supports a connection axis so that it can mutually rotate in a pair of holding parts. As a result, the connecting operation is performed at the tip of the jig. For example, even when connecting a ball chain in a state where it is provided on a conveyor or a blind, interference with the outside hardly occurs, and the connecting operation is easy. it can.

In the ball chain connecting jig according to the present invention, it is preferable that a pair of the end holding portions are provided on the opposite side of the connecting holding portion.
According to such a configuration, the connecting ball is held by holding the end portions of the ball chain to be connected to the end holding portions provided on the opposite side of the connecting holding portion for holding the connecting balls. A state is obtained in which the connector is inserted and engaged. For this reason, the operator does not need to hold the end of the ball chain when connecting the ball chain, and the connecting operation can be facilitated.

In the ball chain connecting jig according to the present invention, it is preferable that the end holding portion is provided so as to be able to hold the ball at the end and the ball adjacent to the ball.
According to such a configuration, the ball at the end of the ball chain and the ball adjacent to the ball are held by the end holding portion. For this reason, the holding | maintenance property of the edge part of a ball chain improves, and more stable connection operation can be provided.

In the ball chain connecting jig according to the present invention, it is preferable that a distance between the end holding portion and the connection holding portion is shorter than a maximum distance between the balls of the ball chain.
According to such a configuration, since the end holding portion and the connection holding portion are provided at an interval shorter than the maximum distance between the balls of the ball chain, the connector protruding from the ball held by the end holding portion is provided. Thus, it is possible to easily obtain a state of being inserted into and engaged with the opening of the connection ball held by the connection holding part. For this reason, when the connecting ball is caulked, the connector can be reliably prevented from coming off from the connecting ball.

In the ball chain connecting jig according to the present invention, it is preferable that a ball pressing portion that abuts on the ball held by the end holding portion and applies a biasing force that presses the ball into the end holding portion is provided.
According to such a configuration, the ball holding portion is brought into contact with the ball held by the end holding portion, and the ball is pressed into the end holding portion by the urging force of the ball holding portion and fixed. As a result, the end of the ball chain can be reliably positioned and fixed, and the ball chain can be connected more easily.

In the ball chain connecting jig of the present invention, the ball chain connecting jig includes a ball split portion that splits a ball positioned at an end portion of the ball chain to be connected, and the ball split portion holds a ball positioned at the end portion of the ball chain. It is preferable to include a processing holding portion to be performed, and a split pin that is provided so as to face the processing holding portion so as to be close to and away from the processing holding portion and is inserted into the ball held by the processing holding portion to break the ball.
According to such a configuration, when the connector does not protrude from the ball at the end of the ball chain to be connected, the ball is held by the processing holding portion, and the split pin facing the processing holding portion is inserted close to the ball. , Break the ball and remove. As a result, the ball adjacent to the cracked ball is positioned at the end of the ball chain to be connected, and becomes a ball from which the connector protrudes. For this reason, the common use of the structure which connects a ball chain, and the structure which can be processed easily in the state in which the ball | bowl which the connector for connecting with the edge part of the ball chain to connect protrudes is obtained. Accordingly, the ball chain can be connected with a single jig, and the connecting operation is facilitated.

The perspective view which shows the connection jig | tool of the ball chain in one Embodiment of this invention. The side view which shows the connection jig | tool of embodiment same as the above. The side perspective view which shows the process part vicinity of the connection jig of embodiment same as the above. The front perspective view which shows the process part vicinity of the connection jig of embodiment same as the above. Front sectional drawing which shows the process part vicinity of the connection jig of embodiment same as the above. Side surface sectional drawing which shows the process part vicinity of the connection jig of embodiment same as the above. The perspective view of the process part vicinity which shows the operation | movement which breaks a ball with the connection jig | tool of embodiment same as the above. The side view of the process part vicinity which shows the operation | movement which breaks a ball with the connection jig of embodiment same as the above. The rear view of the process part vicinity which shows the state which breaks a ball with the connection jig of embodiment same as the above. The side view of the process part vicinity which shows the state which breaks a ball with the connection jig of embodiment same as the above. The front perspective view of the process part vicinity which shows the operation | movement which crimps a ball with the connection jig | tool of embodiment same as the above. The side perspective view of the process part vicinity which shows the operation | movement which crimps a ball with the connection jig of embodiment same as the above. Front sectional view of the vicinity of the processing part showing the operation of caulking the ball with the connecting jig of the embodiment as above The perspective view which shows the connection jig | tool of the ball chain in other embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
<Structure explanation of ball chain connecting jig>
1 to 13 are views showing a connecting jig of the present invention. The connecting jig 1 of the present embodiment connects and repairs the cut ball chain X, connects it to increase the length by adding it, or connects both ends to form the ball chain X in an annular shape. It is a jig to do.
Here, as shown in FIGS. 7 to 13, the ball chain X includes a plurality of hollow spherical balls A and a connector B that connects the balls A together. The ball A is positioned in the radial direction and has a pair of through holes A1. The connector B has a large-diameter portion B1 that is engaged in the ball A at both ends in the axial direction and cannot be inserted through the through-hole A1, and is formed in an I shape in plan view.

As shown in FIGS. 1 to 6, the connecting jig 1 includes a heel body 2 and a processing portion 3 provided on the heel body 2.
The scissors main body 2 includes a pair of gripping portions 2A gripped by an operator, a rotating shaft 2B that rotatably supports one end of the gripping portions 2A, and an end of the gripping portion 2A spaced apart from each other. And a spring member 2C for attaching a coil spring (not shown) that is biased in the direction to be moved.
The grip portion 2A is, for example, a grip portion 21 formed in a longitudinal shape having a substantially U-shaped cross section with a steel plate or the like, and is cut and formed in, for example, an S shape from a steel material in plan view with a screw 22 at one end of the grip portion 21 And a connected connecting portion 23. A pair of paired portions 23 is pivotally supported by the rotation shaft 2B, and a spring member 2C is disposed between the paired paired portions 23 to which the grip portion 21 is connected. Moreover, the process part 3 is provided in the edge part on the opposite side to the edge part to which the grip part 21 of the connection part 23 is connected.
Then, when the pair of gripping portions 21 are gripped in a state in which they are close to each other against the urging force of the coil spring attached to the spring member 2C, the processing portion 3 in the pair of paired portions 23 is provided. It is configured in a ridge structure with end portions close to each other.

As shown in FIGS. 1 to 5, the processing unit 3 breaks the ball A located at the end of the processed lower die 3A, the processed upper die 3B, and the ball chain X to be connected (see FIGS. 7 to 13). And a ball splitting unit 5.
The processed lower mold 3A is formed by cutting out, for example, a steel material into a rectangular shape. A concave connection holding portion 31 is provided at substantially the center of one side surface of the processed lower mold 3A. The connection holding portion 31 is formed in a hemispherical concave shape capable of holding a connection ball C (see FIGS. 11 and 12) that connects the end portions of the ball chain X to be connected. The shape of the connection holding portion 31 is not limited to a hemispherical concave shape. For example, if the connecting ball C can be caulked in a spherical shape, it can be formed into a cylindrical concave shape or the shape of the ball A in consideration of workability. If is an elliptical shape, it may be formed in a semi-elliptical concave shape.
Here, the connecting ball C has an opening C1 formed so as to communicate with the pair of through holes A1 of the ball A of the ball chain X, and the connecting ball C is crimped to close the opening C1. It is formed into a hollow spherical shape having the same diameter.

Further, on one side surface of the processed lower mold 3A, an end holding portion 32 that holds the end of the ball chain X to be connected is provided adjacent to both sides in the radial direction of the connection holding portion 31. These end holding portions 32 are formed in a continuous concave shape so as to hold the two balls A at the end of the ball chain X. The end holding part 32 is positioned in a straight line with the connection holding part 31, and is formed with a depth and a diameter dimension in which the connector B of the held ball chain X is positioned in a straight line. Note that the shape of the end holding portion 32 is not limited to the circular concave shape as in the case of the connection holding portion 31, and the connector B is straightened such that it is formed in a hemispherical concave shape or a semi-elliptical concave shape according to the shape of the ball A. Any shape that can be held in a line position can be used.
The end holding portion 32 is formed such that the gap between the connection holding portion 31 and the end holding portion 32 is narrower than the interval between the adjacent continuous end holding portions 32. Specifically, as shown in FIG. 13, the connection balls C held by the connection holding part 31 and the end holding part 32 are held by the distance between the balls A held by the adjacent end holding parts 32. The distance from the ball A is shorter. This distance is shorter than the maximum distance between the balls A in which the large-diameter portion B1 of the connector B is in contact with the edge of the through hole A1 of the ball A of the ball chain X. In other words, the connector B reliably protrudes from the ball A at the end held by the end holding portion 32, and the large-diameter portion B1 of the connector B can be reliably inserted into and engaged with the opening C1 of the connecting ball C. In relation, a connection holding part 31 and an end holding part 32 are formed. The distance between the adjacent end holding portions 32 is equal to the maximum distance between the balls A, or a distance slightly shorter than the maximum distance between the balls A in consideration of dimensional tolerances and workability held in the recesses. It is preferable to do.
Further, the processed lower die 3A includes the connector B of the ball chain X held by the end holding portion 32 between the connection holding portion 31 and the end holding portion 32 and between the adjacent end holding portions 32. A concave connector holding portion 33 is provided so as to be held.

Further, the processed lower die 3A prevents the ball A of the ball chain X held by the end holding portion 32 from falling off, corresponding to the end holding portion 32 positioned at the end of the processed lower die 3A. Each of the ball pressing portions 3C is provided.
As shown in FIGS. 1 to 6, the ball pressing portion 3 </ b> C includes a pressing member 35 and a leaf spring member 36. The pressing member 35 includes a shaft member 35A and a pressing arm portion 35B provided integrally with the shaft member 35A. The shaft member 35A is formed in a substantially cylindrical shape, and is rotatably supported in the axial direction along the longitudinal direction of the processed lower mold 3A. The pressing arm portion 35 </ b> B protrudes along the tangential direction at the approximate center of the peripheral surface of the shaft member 35 </ b> A, and the tip end portion is provided so as to be able to advance and retreat in the end portion holding portion 32. A pressing convex portion 35C that bulges toward the end holding portion 32 is provided at the distal end portion of the pressing arm portion 35B. A side surface extending from the pressing convex portion 35C to the proximal end side of the pressing arm portion 35B corresponds to the spherical surface of the ball A so that the ball A can be reliably pressed without being in contact with the peripheral surface of the ball A. It is preferably formed in a curved shape.
The plate spring member 36 is formed by punching from a steel plate, for example, and includes a mounting plate portion 36A, a retaining portion 36B provided in series on the mounting plate portion 36A, and a leaf spring portion 36C provided in series on the mounting plate portion 36A. And have. The attachment plate portion 36A is attached to the side surface opposite to the side on which the end holding portion 32 is provided in the processed lower mold 3A by a spring attachment screw 36D. The retaining portion 36B protrudes from one end in the longitudinal direction of the mounting plate portion 36A, is folded back along the end surface of the processed lower die 3A, and comes into contact with the end portion of the shaft member 35A of the pressing member 35 to prevent it from falling off. The leaf spring portion 36C is folded back from one side edge of the mounting plate portion 36A along the one surface side of the processed lower die 3A, and the pressing projection 35C is moved forward onto the end holding portion 32 to the pressing arm portion 35B. Apply urging force.

Further, the processed lower mold 3A is positioned at substantially the center of the side surface to which the mounting plate portion 36A opposite to the side on which the end holding portion 32 is provided in the processed lower mold 3A. A mounting recess 37 is cut out so that the tip of the connecting portion 23 can be inserted and engaged.
The processed lower mold 3 </ b> A is attached to the tip of one of the paired portions 23 with a lower mold attaching screw 38.

The upper processing die 3B is formed by cutting out from, for example, a steel material. This processed upper die 3B has a mounting base portion 42 that is formed in a rectangular shape and is attached to the tip side surface of the other coupling portion 23 of the heel body 2 by an upper die attaching screw 41 from the side.
The mounting base portion 42 is provided with a caulking portion 43 that is connected to a surface facing the processed lower die 3 </ b> A at the tip of the coupling portion 23. The caulking portion 43 is formed in a hemispherical concave shape on the tip surface facing the processed lower mold 3A to caulk the connecting ball C held by the end holding portion 32 to connect the end of the ball chain X. The caulking portion 43 is not limited to a hemispherical concave shape, and may be any shape capable of caulking the connecting ball C in a spherical shape, such as a circular concave shape or a semi-elliptical concave shape corresponding to the shape of the ball A. It can be.
Further, the upper die 3B has a ball chain that faces the connector holding portion 33 of the lower die 3A in the radial direction of the crimping portion 43 and is held by the end holding portion 32 when the connecting ball C is crimped. An escape recess 44 into which the X connector B is inserted is provided.

The ball splitting unit 5 includes a processing holding unit 5A that is provided in the lower processing die 3A and a split pin 5B that is provided in the processing upper die 3B.
The processing holding portion 5A is positioned at one end in the longitudinal direction on the surface of the gripping portion 2A in the lower processing die 3A, and places and holds the ball A positioned at the end of the ball chain X in the ball splitting portion 5 It is formed in a pedestal shape having a possible placement surface 51.
The mounting surface 51 of the processing holding portion 5A is provided with a spherical concave mounting recess 52 facing upward, which is the side where the end holding portion 32 of the processed lower mold 3A is opened. Further, the processing holding portion 5A is provided with an insertion recess 53 that is cut out in a concave shape from the end surface facing the grip portion 2A to the center of the mounting recess 52 so that the connector B of the ball chain X can be inserted.
Then, as shown in FIG. 7, the processing holding portion 5 </ b> A inserts the connector B into the insertion recess 53 so that the removal target ball A located at the end of the ball chain X is placed in the placement recess 52. To do. Thus, the ball chain X is held in a state of being supported by being suspended by the processing holding portion 5A.
The processing holding portion 5A does not have to be provided with the mounting recess 52 as long as the ball chain X can be suspended and supported. However, by providing the mounting recess 52, the ball A to be removed can be stabilized. The ball chain X can be stably suspended and supported. Further, the mounting recess 52 can efficiently transmit the force acting on the ball A to break the ball A to the ball A, and the ball A can be easily broken and removed. For these reasons, it is preferable to provide the mounting recess 52.

The split pin 5B of the ball split portion 5 is formed in a cylindrical shape, and a male screw 55 is provided on the peripheral surface. The split pin 5B is screwed to the mounting base portion 42 of the upper mold 3B so as to penetrate the connecting portion 23 in the proximity and separation directions. In other words, the split pin 5B has a tool engagement recess 56 into which a tool such as a hexagon wrench can be inserted, for example, and is rotated by the tool so that the axial direction of the split pin 5B with respect to the mounting base portion 42 is achieved. Is attached to the mounting base 42 so as to be movable.
The split pin 5B is provided with a conical pin portion 57 whose diameter increases in accordance with the tip at the end facing the processed lower mold 3A (the end opposite to the tool engagement recess 56). The pin portion 57 has a large diameter portion that is sufficiently large with respect to the diameter size of the through hole A1 of the ball A. That is, when the pair of gripping portions 2A are gripped by the operator and the split pins 5B are brought close to the lower processing die 3A, the split pins 5B are placed on the processing holding portion 5A as shown in FIGS. The tip of the pin portion 57 is inserted into the through-hole A1 of the held ball A, and the ball A is broken so as to widen the through-hole A1.

<Ball chain ball removal operation>
Hereinafter, the operation of removing the ball A to connect the ball chain X using the connecting jig 1 will be described.
Specifically, when the ball chain X is cut by an external force and the connector B is pulled out of the ball A, or the connector B is cut, or the like, the connector B does not remain at the end of the ball chain X. In order to connect with the connecting ball C, it is necessary that the connector B is provided at the end.
In order to remove the ball A, the ball A at the end of the ball chain X is held by the processing holding portion 5A of the ball splitting portion 5 as shown in FIGS. That is, the connector B at the end is inserted into the insertion recess 53 of the processing holding portion 5A, and the ball A to be removed located at the end of the ball chain X is placed in the mounting recess 52 of the processing holding portion 5A.
Then, as shown in FIGS. 9 and 10, the operator holds the pair of gripping portions 2 </ b> A close to each other against the urging force of the coil spring attached to the spring member 2 </ b> C. The split pin 5B is inserted into the through hole A1 of the ball A holding the pin portion 57. In this state, when the operator further grips the grip portion 2A, the pin portion 57 is further inserted so as to widen the through hole A1, and the ball A breaks. By removing the broken ball A, the connector B protrudes from the end of the ball chain X.

<Ball chain connection operation>
Next, the operation of connecting the ball chain X using the connecting jig 1 will be described.
As the ball chain X to be connected, one in which the connector B protrudes at the end is used. When the connector B does not protrude from the end of the ball chain X to be connected, the operation of removing the ball A at the end described above is performed.
When connecting the ball chain X, as shown in FIGS. 11 and 12, first, the connection ball C is held by the connection holding portion 31 in a state where the opening C <b> 1 opens to the distal end side of the connection jig 1. In this state, the large-diameter portion B1 of the connector B located at the end of the ball chain X to be connected is inserted into and engaged with the opening C1 of the connecting ball C, and the ball chain X is attached to the end holding portion 32. Each of the balls A located at the end of each is held. When the ball A is held by the end holding portion 32, the ball A is pressed against the urging force due to the elastic return of the leaf spring portion 36C of the leaf spring member 36 so as to be inserted into the end holding portion 32. The pressing member 35 is rotated so that the pressing convex portion 35 </ b> C of the member 35 is retracted from the end holding portion 32. Then, in a state where the ball A is inserted into the end holding portion 32, the pressing convex portion 35 </ b> C advances to the end holding portion 32 by the elastic return of the leaf spring portion 36 </ b> C, and the ball A presses against the end holding portion 32. Positioned and held.
In this state, when the worker holds the pair of gripping portions 2A close to each other against the biasing force of the coil spring attached to the spring member 2C, the connecting ball C is crimped by the crimping portion 43. . Then, with the opening C1 of the connecting ball C closed and crimped in a spherical shape like the ball A, the connector B at the end of the ball chain X is connected to the connecting ball C as shown in FIG. The ball chain X is connected by being prevented from coming off.

<Effects of connecting jig>
As described above, in the connection jig 1 according to the above-described embodiment, the end of the ball chain X to be connected is held by the end holding portion 32 and the connection of the ball chain X to be connected is engaged. The ball C is also held in the connection holding portion 31 adjacent to the end holding portion 32.
For this reason, after holding the end of the ball chain X to be connected and the connecting ball C, the operator only needs to hold the holding portion 2A in order to crimp the connecting ball C. Therefore, the conventional operation of repairing the ball chain X while the operator holds it and caulking the ball A is not necessary in the present embodiment, and the ball chain X can be easily connected. Furthermore, an operator can work with one hand without increasing the size with a simple structure including a configuration for holding the end of the connected ball chain X and the connecting ball C and a configuration for crimping the connecting ball C. It can be provided as a small jig, and a jig that is small and light and can be easily manufactured can be provided.

And in the said embodiment, the edge part holding part 32 holding the edge part of the ball chain X to connect is located in the other side of the connection holding part 31 holding the connection ball | bowl C, ie, the radial direction of the connection holding part 31 A pair is provided.
Therefore, it is possible to obtain a state in which the connector B at each end of the ball chain X to be connected is inserted and engaged with the connecting ball C. Therefore, when the operator connects the ends of the ball chain X, the operator does not need to perform the operation of crimping the connecting ball C while holding the end of the ball chain X. Well, the connecting work can be made easier.

Further, in the above-described embodiment, the end holding portion 32 holds the ball A at the end of the ball chain X and the ball A adjacent to the ball A.
For this reason, the holding | maintenance property of the edge part of the ball chain X improves, and more stable connection operation can be provided.

In the above embodiment, the end holding portions 32 and the connection holding portions 31 are provided at intervals shorter than the maximum distance between the balls A of the ball chain X. This facilitates the state where the connector B protruding from the ball A held by the end holding portion 32 reaches the opening C1 of the connecting ball C held by the connection holding portion 31 and can be inserted and engaged. can get.
For this reason, when the connecting ball C is caulked, the connector B can be reliably prevented from coming off from the connecting ball C.

Further, in the above-described embodiment, the ball pressing portion 3C is brought into contact with the ball A held by the end holding portion 32, and the ball A is pressed into the end holding portion 32 and fixed by the urging force of the ball pressing portion 3C. .
For this reason, the end of the ball chain X can be reliably positioned and fixed to the end holding portion 32, and the connection of the ball chain X can be more easily performed.

In the above embodiment, when the connector B does not protrude from the ball A at the end of the ball chain X to be connected, the ball A is held by the processing holding portion 5A, and the split pin 5B facing the processing holding portion 5A is provided. The balls A are inserted close to each other, and the balls A are broken and removed. Thus, the ball A adjacent to the broken ball A becomes the ball A which is located at the end of the ball chain X to be connected and from which the connector B protrudes.
For this reason, it is possible to share the configuration in which the ball chain X is coupled with the configuration in which the ball A from which the connector B for coupling to the end of the coupled ball chain X projects can be easily processed. . Accordingly, the ball chain X can be connected with one jig, and the connection can be easily performed.

And in the said embodiment, it is set as the eaves structure which provides the process part 3 in the front end side from the rotating shaft which supports a connection axis so that it can mutually rotate in a pair of holding part 2A.
For this reason, the connecting operation is carried out at the tip of the connecting jig 1, and even when connecting the ball chain X in a state of being provided on the conveyor or the blind, for example, other external structures such as the conveyor and the blind are connected. The ball chain X can be easily connected.

Moreover, in the said embodiment, it is set as the structure which connected the coupling part 23 cut out from the steel material to the grip part 21 which bent the steel plate as the holding part 2A.
For this reason, the bag main body 2 can be reduced in weight, and the cost can also be reduced by reducing the material cost.

<Modification>
It should be noted that the present invention is not limited to the above-described embodiment, but includes modifications and improvements as long as the object of the present invention can be achieved.
In the above embodiment, the configuration in which the processing unit 3 is provided at the tip of the gripping unit 2A is illustrated. However, as illustrated in FIG. 14, for example, the processing unit 3 is positioned between the gripping unit 2A and the rotation shaft 2B. It may be provided. The embodiment shown in FIG. 14 can also be provided as a small jig that allows the operator to easily connect the ball chain X and allows the operator to work with one hand, similarly to the embodiment shown in FIGS. Further, in the embodiment shown in FIG. 14, the shape of the coupling portion 23 can be simplified and the productivity can be improved as compared with the embodiment shown in FIGS. Note that, as described above, the embodiment shown in FIGS. 1 to 13 is preferable because the work is performed at the tip portion of the saddle structure, and the connection workability of the ball chain X is good.
Further, the present invention is not limited to the configuration in which the pair of gripping portions 2A is rotatably connected by the rotation shaft 2B. For example, a link mechanism is provided, and the lower processing die 3A and the upper processing die 3B move in the opposing direction and the opposing surfaces move in parallel. It is also possible to use a configuration provided in the state to be performed.

In each of the above-described embodiments, the configuration in which the two end portions of the ball chain X to be connected are each held by the end holding portion 32 is exemplified. For example, the end portion of one ball chain X to be connected is held. Only the end holding portion 32 to be provided may be provided, and the end of the other ball chain X may be caulked with the connecting ball C while being held by the operator.
Even in this configuration, it is possible to work only by having one end of the ball chain X, and the connection workability can be improved as compared with the conventional case of working with both ends of the ball chain X.

Moreover, in each embodiment mentioned above, although the structure which hold | maintains two balls A of the edge part of the ball chain X of connection object was illustrated, the structure which hold | maintains only one or three or more of the ball | bowl A of an edge part. It is good.
And according to the structure which hold | maintains only one, size reduction of the connection jig | tool 1 is obtained by size reduction of the process lower die 3A. In addition, from the viewpoints of both holding stability and downsizing of the processed lower mold 3A, a configuration that holds the two balls A positioned at the end portions as in the above-described embodiments is preferable.

Further, in each of the above-described embodiments, the distance between the end holding part 32 and the connection holding part 31 is shorter than the maximum distance between the balls A of the ball chain X. It may be the same distance.
Moreover, although the distance between the edge part holding | maintenance part 32 and the connection holding | maintenance part 31 was set shorter than the distance between the adjacent edge part holding | maintenance parts 32, you may provide in the same space | interval, for example. That is, the distance between the end holding portion 32 and the connection holding portion 31 is such that the large-diameter portion B1 of the connector B at the end of the held ball chain X can be engaged with the opening C1 of the connecting ball C. Any distance is sufficient.

In each of the embodiments described above, the ball pressing portion 3C has been described, but it may not be provided.
Further, the ball pressing portion 3C is configured by the pressing member 35 and the leaf spring member 36. For example, the pressing member 35 is not provided, and the ball A is directly pressed by the leaf spring portion 36C of the leaf spring member 36. Any structure that can hold the ball A can be applied.
In addition, the ball holding portion 3C is configured to hold the ball A held by the end holding portion 32 positioned at the end of the processed lower die 3A, but the ball A of the end holding portion 32 adjacent to the connection holding portion 31 is pressed. It is good also as a structure which hold | suppresses, or a structure which hold | suppresses two balls A both. In the configuration of the embodiment in which the ball A held by the end holding portion 32 of the end is pressed, the holding position is separated from the position where the connector B is inserted and engaged with the opening C1 of the connecting ball C. Therefore, the operation of inserting and engaging the connector B with the connecting ball C can be easily performed, which is preferable.

Moreover, in each embodiment mentioned above, although the ball split part 5 was provided and demonstrated, it is not necessary to provide. Moreover, as a position which provides the ball split part 5, you may arrange | position in the front end side further from the process part 3, etc.
And although it comprised with the grip part 21 and the coupling part 23 as the holding part 2A, it is good also as an integral structure where the coupling part 23 extended without using the grip part 21, for example.

  In addition, the specific structure and shape in the implementation of the present invention may be other structures as long as the object of the present invention can be achieved.

  The present invention connects the ends of the ball chain to connect and repair the cut ball chain, to connect the ball chain, or to connect both ends to form the ball chain in an annular shape. It can be used as a jig to perform.

  DESCRIPTION OF SYMBOLS 1 ... Connection jig, 2A ... Gripping part, 2B ... Rotating shaft, 3 ... Processing part, 3C ... Ball pressing part, 5 ... Ball split part, 5A ... Process holding part, 5B ... Split pin, 31 ... Connection holding part , 32 ... end holding part, 43 ... caulking part, A ... ball, B ... connector, B1 ... large diameter part, C ... ball for connection, C1 ... opening, X ... ball chain

Claims (7)

A connecting jig (1) for connecting the ends of a ball chain (X) in which a plurality of hollow spherical balls (A) are connected to both ends in the axial direction by a connector (B) having a large diameter portion (B1). Because
A pair of gripping portions (2A) gripped by an operator, and a processing portion (3) provided at an end of these gripping portions (2A),
The processed part (3)
A concave end holding portion (32) for holding a ball (A) located at at least one end of a ball chain (X) to be connected and protruding from the connector (B);
The connector (B) provided adjacent to the end holding portion (32) and protruding from the ball (A) at the end of the ball chain (X) and the other end of the ball chain (X) to be connected A concave connection holding portion (31) for holding a connection ball (C) having an opening (C1) for inserting and engaging a connector (B) protruding from the ball (A) positioned at
The connection holding part (31) is provided so as to be close to and away from the connection holding part (31), and the connection ball (C) held by the connection holding part (31) is caulked to close the opening (C1). A ball chain connecting jig, comprising: a crimping portion (43) for preventing the connector (B) from coming off and connecting an end portion of the ball chain (X) to be connected. The pair of gripping portions (2A) are pivotally connected to each other by a rotating shaft (2B),
The ball chain coupling jig according to claim 1, wherein the processing portion (3) is provided on a distal end side of the rotating shaft (2B) in the grip portion (2A). 3. The ball chain coupling treatment according to claim 1, wherein a pair of the end holding portions (32) is provided on the opposite side via the connection holding portion (31). 4. Ingredients. The said end holding part (32) is provided so that two of the ball | bowl (A) of the said end part and the ball | bowl (A) adjacent to this ball | bowl (A) can be hold | maintained. The ball chain connection jig according to claim 3. The distance between the end holding part (32) and the connection holding part (31) is shorter than the maximum distance between the balls (A) of the ball chain (X). Item 5. The ball chain connecting jig according to any one of Items 4 to 4. A ball pressing portion (3C) that abuts on the ball (A) held by the end holding portion (32) and exerts an urging force that presses into the end holding portion (32) is provided. The ball chain connecting jig according to any one of claims 1 to 5. A ball splitting part (5) for splitting the ball (A) located at the end of the connecting ball chain (X);
The ball splitting portion (5) includes a processing holding portion (5A) for holding a ball (A) located at an end of the ball chain (X);
A split pin (5B) which is provided so as to face the processing holding portion (5A) so as to be able to approach and separate, and which is inserted into the ball (A) held by the processing holding portion (5A) and breaks the ball (A); The ball chain coupling jig according to any one of claims 1 to 6, wherein the ball chain coupling jig is provided.

Images