JP4462898B2 - Chain member and chain body using the same - Google Patents

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain member for connecting parts such as ornaments and mechanical devices, and a chain body using a plurality of them, and in particular, a chest for decoration, a ring, a chain, a bracelet, an anklet, and a wristband. Can be used for etc.

Conventionally, a chain used for a wristwatch band or the like is composed of a band piece called an outer piece or a middle piece, and a through hole is formed in the width direction of each band piece in order to connect the outer piece and the middle piece. Provided, connecting pins are inserted to connect the band pieces. That is, a conventional chain such as a wristwatch band is provided with a hole penetrating the side surface of each piece to connect the pieces, and a connecting pin is inserted into the hole using a C-ring or the like. by using a pin and a tube with a concave-convex called it was or assembled.

  However, such a connection method has a problem that the decorativeness of the appearance is remarkably deteriorated because the through hole is exposed as it is in the outer frame. In recent years, various connection methods have been proposed to improve the decorative effect.

  For example, in Patent Document 1, a through hole is formed inside a piece, a connecting tool and a piece are inserted inside the through hole, and the connecting tool is continuously provided, thereby reducing the appearance of the connecting body. It shows how to eliminate holes.

Further, in Patent Document 2, a plurality of center pieces having through holes penetrating in the horizontal direction provided at both end portions of the side surface are arranged in series, and connecting pins having stepped portions are formed at both end portions outward. Inserted into each through hole of the center piece in a protruding state, the protruding portion is inserted into the counterbore hole of the outer piece from the side surface, and a stopper piece provided with a protrusion that engages with a stepped portion of the connecting pin is inserted from the back surface of the outer piece into the counterbore There has been proposed one that holds a connecting pin, an outer piece, and a center piece inserted into a hole. In Patent Document 2, the band piece in the vicinity of the watch case, which is a timepiece drive unit, has no through hole at the end of the band piece, and the appearance is improved.
Japanese Utility Model Publication No. 5-55910 JP 2001-197911 A

  However, the conventional assembly method using a C-ring or a capsa significantly reduces the decorative effect because the hole of the connecting pin can be seen on the side surface of the connected chain.

  Further, the connection structure described in Patent Document 1 is effective in the case of a design in which the band pieces are formed in one row, but has a problem that it cannot be applied to a design in which two or more rows are formed. For example, in a wristwatch band having a plurality of middle pieces and outer pieces in the band width direction, it is impossible to produce a design in which the middle piece and the outer piece are alternately shifted in the band length direction. there were. For this reason, there has been a problem that it is impossible to develop a design for a product that connects small band pieces.

  Further, the structure of the band piece of Patent Document 2 has the following problems. If the watch band is for personal use, it is necessary to adjust the length of the watch band according to the thickness of the individual arm. In order to make this adjustment, several pieces from the buckle side of the wristwatch band need to have a through hole for removing the connecting pin formed on the end of the band piece so that the length can be adjusted. There was a problem that the appearance was damaged. In this case, in order to adjust the length of the wristwatch band, the band piece equipped with a through hole for attaching and detaching the band piece is required to have at least 3 to 5 pieces, and the decorativeness is significantly reduced. I was letting. In addition, the stopper piece for fixing the connecting pin is made of metal, and is provided on the side that comes into contact with the arm. Even if the band piece itself was made of ceramics, it did not prevent metal allergy. In addition, as a method to avoid metal allergy, it is conceivable that the stopper piece is made of resin. However, the resin cannot secure sufficient strength as a stopper piece, and is reliable enough to use a wristwatch band for a long period of time. There was a problem. Furthermore, a counterbore hole provided with a connecting pin and a stopper piece is required on the bottom side of each outer piece, that is, the side contacting the arm, and the work of connecting the pieces becomes very complicated and connects with the cost of the connecting tool. There were problems such as high wages for the work.

Therefore linkage member according to the present invention is connected to the Chukoma having a hinge insertion opening, and a pair of outer frame which is disposed so as to sandwich the intermediate frame, the in piece and the outer piece comprises a head and the opposite side thereof and two connecting jig having an L-shaped hook-shaped hinge portions, a chain member having a fixing pin for fixing the engagement of the hook-shaped hinge part, from both sides to the hinge insertion opening before Symbol in frame It is engaged with the hook-shaped hinge part both by inserting the connecting jig, the engagement of the hinge insertion hole and said inserting the fixing pin in a gap between the hook-shaped hinge part and the hook-shaped hinge portion by fixing the, characterized in that connecting the respective said outer frame to said head portion of said two connecting jig.

Also, the chain members of the present invention having the above structure, characterized by being integrally forming said outer frame to said head of said connecting jig.

Moreover, the chain member of the present invention is characterized in that a plurality of the chain members are connected in any of the above-described configurations .

Furthermore, the chain according to the present invention is the chain according to any one of the above-described configurations, wherein the middle piece has an insertion port for a connection pin, and the insertion pins of the middle piece of the adjacent chain members are overlapped to connect the connection pin. insert and characterized in that it has been connected a plurality of the chain members together with said connecting pin. In addition, the chain according to the present invention is characterized in that, in any of the above configurations , a curved surface or a slope is provided at at least one corner on the outer peripheral surface of the middle piece. Furthermore, the chain of the present invention, in any of the above construction, both end portions to form a curved concave and convex portions in the length direction of the outer frame, so that the outer frame between the front and rear when linked overlap It is characterized by that. In addition, the chain according to the present invention is characterized in that, in any of the above-described configurations, a slope for restricting rounding after connection is provided on a bottom surface side of the convex portion of the outer piece.

According to the present invention , the middle piece having the hinge insertion opening, the pair of outer pieces arranged so as to sandwich the middle piece, the L-shaped portion provided on the head and the opposite side connecting the middle piece and the outer piece . and two connecting jig having a hook-shaped hinge part, a linkage member having a fixing pin for fixing the engagement of hook-shaped hinge part, insert the sides or et consolidated jig hinge insertion opening of the middle piece The two hinges are engaged with each other, and a fixing pin is inserted into the gap between the hinge insertion opening and the key hinge to secure the engagement between the key hinges. By connecting the outer pieces to the respective parts, it becomes easy to connect the chained body with small pieces, and for example, the design of the wristband piece can be diversified. Furthermore, it is possible that the through hole for pulling out the connecting pin is connected to the end of the frame was required for adjusting the length of the chain body it becomes unnecessary to obtain a decorative excellent terminal chain. In addition, since a metal stopper for supporting the connecting pin is unnecessary, metal allergy can be prevented, lack of strength when using a resin or the like can be eliminated, and high reliability can be obtained. . In addition, it is not necessary to produce the outer and middle pieces that make up the chain member with special electric discharge machining technology or fine hole machining, and it can be easily produced, and the work of connecting the pieces is very easy. The effect that the labor cost for linking with the cost of the tool becomes cheap is obtained.

Further, according to the present invention, by which is adapted a curved concave and convex portions are formed on both ends in the length direction of the outer frame, the recesses and projections of the front and rear of the outer frame when linked overlap, A chain with excellent decorativeness can be obtained.

Furthermore , by providing a slope for restricting rounding after connection on the bottom side of the convex portion of the outer piece, it is possible to prevent the chain from being rounded more than necessary.

  An embodiment of a chain member of the present invention and a chain body using the chain member will be described based on a watch band as an example.

FIG. 1 is a plan view of a chain member 1 used in a watch band of the present invention before assembly, FIG. 2 shows an example of an embodiment after the chain member of the present invention is assembled, and FIG. It is a side view after the assembly of a member, (b) is a top view after the assembly of the chain member of the present invention .

  The chain member 1 includes a plurality of middle pieces 11 (11a, 11b) arranged at a portion located in the central portion of the watch band, outer pieces 21 arranged on both outer sides of the middle piece 11, and the middle piece. Two connecting jigs 31 each having a key-shaped hinge portion 31 a for connecting the pieces 11 to each other and also connecting the outer piece 21, and a fixing pin 41 for fixing the connecting jig 31 and the middle piece 11. It consists of and.

The chain member 1 includes three middle pieces 11 provided with a connecting pin insertion port 11c and a hinge insertion port 11d in the width direction. Among the three middle pieces 11 arranged, the middle piece 11a located at the center. the the other two Chukoma 11b are arranged in a state of communicating the hinge insertion hole 11d provided in the side by side on opposite orientation, or one the three in frame. Then, the three hinge insertion hole 11d through the communicating, from both ends, respectively by inserting the key-shaped hinge portion 31a of the connecting jig 31, a key-type hinge portion 31a in the central portion of the hinge insertion hole 11d with each other after locked, after fixing the locking of the hook-shaped hinge portion by inserting the fixing pin 41 into the gap between the hinge insertion hole 11d and the hook-shaped hinge portion 31a, the head 31b of the two connecting jig 31 The outer pieces 21 are connected to each other.

  Here, FIGS. 3A to 3D show a method of inserting and locking the connecting jig 31 and the fixing pin 41 in the hinge insertion slot 11d. First, as shown in FIG. 3 (a), the connecting jig 31 is inserted into the hinge insertion slot 11d with its position shifted from both sides of the middle piece, and as shown in FIG. 3 (b), the connecting jig 31 is inserted into the back of the hinge insertion slot 11d. 3C, the connecting jig 31 is moved sideways as shown in FIG. 3C to lock the key hinges 31a with each other, and the fixing pin 41 as shown in FIG. Is inserted into the gap between the hinge insertion opening 11d and the connecting jig 31, and the locking structure of the connecting jig 31 is fixed. Here, the cross-sectional shape of the fixing pin 41 may be circular or rectangular, and may be produced so as to fit the gap.

  4, 5 and 6 show detailed shapes of the outer piece 21, the connecting jig 31, and the middle piece 11, respectively.

  As shown in FIG. 4, a counterbore groove 21 a is formed in the outer piece 21 on the side surface facing the middle piece 11 from the one end in the length direction to the other end, and the counterbore groove 21 a The head 31b of the connecting jig 31 is fitted while sliding.

  As shown in FIG. 5, the head portion 31 b of the connecting jig 31 is formed in a substantially square shape, provided with a thick stepped portion 31 d in the direction in which the center pieces 11 are arranged, and the connecting jig 31 is connected to the connecting jig 31. A guide groove 31c for inserting a fixing pin 41 for fixing into the hinge insertion opening 11d is formed. Further, the step portion 31d is formed in a direction perpendicular to the arrangement direction of the middle pieces 11 and over the length direction of the head portion 31b.

  In order to be able to lock the key-type hinge portions 31a at the center of the hinge insertion port 11d, the width of the hinge insertion port 11d needs to be larger than the width of the key-type hinge portion 31a. For this purpose, the numbered key-type hinge 31a is locked, and a fixing pin 41 for preventing them from moving inside the hinge insertion slot 11d is inserted from the guide groove 31c, and the inside of the hinge insertion slot 11d is inserted. The gap is sealed.

  Further, as shown in FIG. 6, the middle piece 11 has a hinge insertion slot 11d and a connecting pin insertion slot 11c.

  Next, a chain body in which a plurality of chain members 1 are connected will be described.

As shown in FIG. 7, by inserting the connecting pin by superimposing the insertion opening between the in frame of the chain member adjacent a plurality of chain members 1 to each other unevenness of mutual Chukoma 11 engages The connecting pin insertion port 11c between the middle piece 11b on both sides of the three arranged middle pieces 11 and the middle piece 11a in the central portion of the next chain member 1 to be connected is communicated, and the connecting pin 51 is The chain 71 can be formed by inserting the chain 71.

  At the time of actual assembly, the above-described connection is performed before the outer piece 21 is attached, and the connection pin 51 can be hidden by attaching the outer piece 21 after the connection pin 51 is inserted. The connecting pin 51 is not visible, and the decorativeness is excellent.

Further, as shown in FIG. 6, the chain of the present invention is provided with a curved surface 11 e or an inclined surface at at least one corner on the outer peripheral surface of the middle piece 11, thereby forming a curved surface in the length direction in which the chain 71 is connected. It can be formed and easily wrapped around an arm or the like. That is, by using the Chukoma 11 having at least one corner on the curved surface 11e of the outer peripheral surface, without providing a gap between Chukoma 11 chained, that terminal chain 71 to have a curved surface Since it becomes possible, the connection pin 51 becomes more difficult to see, and the chain body 71 having excellent decorativeness can be obtained.

  Moreover, as shown in FIG. 4, the concave part 21d and convex part 21c of a curved surface are provided in the length direction both sides of the outer piece 21, and when it connects, the concave part 21d and convex part 21c of the front and rear outer pieces 21 overlap. By doing so, since the outer pieces 21 are closely connected to each other, it is possible to obtain a chain body 71 having excellent decorativeness.

Furthermore, as shown in FIG. 8, by providing a slope 21b as a stopper for stopping the rotation of another outer piece 21 connected to the outer piece 21 on the bottom surface side of the convex portion 21c of the outer piece 21, a chain 71 Is not rounded more than necessary, and can have a curved surface with a specific curvature.

  Note that the shape of the connecting pin insertion port 11c and the hinge insertion port 11d of the intermediate piece 11 is not particularly limited to that shown in the above embodiment, and even if the cross-sectional shape of the through hole is a square or an ellipse. It is included in the scope of the present invention. In addition, the shape of the middle piece 11 and the outer piece 21 may be a rectangular parallelepiped, a cube, or a bowl shape, but it is preferable to make the shape easy to round when a chain is formed.

  The number of the middle pieces 11 constituting the chain member 1 has been described as being three. However, the present invention is not limited to only three pieces, and may be one piece or two pieces or more. Needless to say, this is within the scope of the present invention. In the case of using a plurality of middle pieces 21, it suffices to alternately arrange the middle pieces 21 while changing the direction of the middle pieces 21.

  As an embodiment of the chain member using only one middle piece, as shown in FIG. 9, a middle piece 81 having a shape in which three middle pieces are integrated can be used. A chain 91 as shown in FIG.

  Furthermore, as another embodiment of the present invention, a structure as shown in FIG. 11 may be used. The middle piece 61 has a rectangular shape and includes a hinge insertion opening 61a and a connection pin insertion opening 61b. The connection jig 62 has a key-shaped hinge portion 62a, and an outer piece 62b is integrally formed on the head. . As in the previous embodiments, after the key hinges 62a are connected to each other in the hinge insertion slot 61a, a plurality of connection pins 63 are inserted into the connection pin insertion slot 61b and connected to form a chain. can do.

  The intermediate piece 11 and the outer piece 21 forming the chain member 1 and the chain body 71 of the present invention described in detail above are common metals such as aluminum, tin, brass, cemented carbide, hard alloy, gold, silver, Various materials such as noble metals, ceramics, glass, resin, wood made of platinum, rhodium and alloys containing at least one of them can be used. After cutting each into a predetermined size, the connecting pin insertion port, hinge insertion port, counterbore groove, guide groove, etc. may be formed. The connection jig 31 and the fixing pin 41 may be made of metal, and the connection pin 51 may be manufactured using a general metal pin.

  When the material of the inner piece 11 and the outer piece 21 is ceramic, the through-holes and the like may be formed in advance by a powder pressure molding method or an injection molding method, which are general manufacturing methods. Even if a hole or the like cannot be formed in advance, it may be formed using a machining center or a drilling machine after it is formed into a predetermined shape.

  The chain member 1 of the present invention can be formed by assembling the produced intermediate piece 11 and the outer piece 21 with the connecting jig 31 and the fixing pin 41, and connecting them with the connecting pin 51, The chain 71 can be assembled.

  And using the chain of the present invention, for example, if it is made using ceramic pieces or outer pieces made of ceramics for ornaments such as watch bands, bracelets, anklets, etc. Since metal etc. are not exposed, metal allergy can be prevented.

  Examples of the present invention will be described below.

  As an example, a chain member used for the watch band of the present invention and a chain body using the same were produced.

  First, by using a general ceramic manufacturing method using a powder pressing method, the middle piece 11 shown in FIG. 6 was made of zirconia ceramics with a width of 4 mm, a length of 8.4 mm, and a thickness of 3.5 mm. At this time, the connecting pin insertion port 11c was formed with a through hole of φ0.9 mm, and the hinge insertion port 11d was formed with a through hole of width 3.4 mm × height 0.8 mm. Then, the obtained porcelain was finished by grinding to a desired shape using a grinding machine such as a surface grinder. Next, mirror finishing was carried out to obtain a medium gloss 11 with good gloss. Moreover, the outer piece 21 shown in FIG. 4 was obtained with the same material and dimensions.

  Three middle pieces 11 obtained as described above were used and the front and rear directions were arranged alternately. The connecting jig 31 shown in FIG. 5 was inserted into the hinge insertion port 11d of the arranged middle pieces 11 from both sides, and the key-shaped hinge portion 31a was locked at the center of the middle piece 11a. Next, the fixing pin 41 was inserted into the guide groove 31c provided in the connecting jig 31 to eliminate the backlash of the key-type hinge portion 31a. The guide groove 31c can be changed to a round cross section. Next, the step portion 31 d of the connecting jig 31 inserted into the three connected middle pieces 11 was slid into the counterbored groove 21 a of the outer piece 21. In this way, a chain member 1 shown in FIG. 2 was produced.

  Next, the middle piece 11 of another chain member 1 is arranged between the middle piece 11 and the outer piece 21 of the produced linkage member 1, and the width of the middle piece 11 is inserted into the connecting pin insertion port 11 c provided in the middle piece 11. A round connecting pin 51 having a length of about 0.2 mm shorter than the dimension was inserted and fixed. The reason why the length of the round connecting pin 51 is shorter than the total width of the three middle pieces 11 arranged is that if the connecting pin 51 is too long, the outer piece 21 cannot be set. This is because the strength of connecting 11 is weakened.

  By connecting the intermediate piece 11 and the outer piece 21 in this order, the chain 71 of the present invention shown in FIG. 7 was produced. Such a chain 71 has a structure in which a hole for connection is not visible when viewed from any of the side surface direction, top surface direction, and bottom surface direction of the chain body 71, and is more decorative than a conventionally proposed chain body. Can be improved.

  Next, as a next embodiment, when connecting using a deformed middle piece 81 as shown in FIG. 9, the key type hinge part 31 a of the connecting jig 31 is inserted into the hinge insertion port 81 a of the middle piece 81 from both sides. Then, the key-shaped hinge portion 31 a is locked at the center of the middle piece 81. Next, the concave portion 81c of another intermediate piece 81 is aligned with the convex portion 81b of the intermediate piece 81, and the round connection pin 51 that is about 0.2 mm shorter than the width dimension of the intermediate piece 81 is inserted into the connection pin insertion port 81d. The middle pieces 81 are connected to each other. The reason why the length of the connecting pin 51 is shorter than the width dimension of the middle piece 81 is that the outer piece 21 cannot be set if the round connecting pin 51 is too long as described above, and the middle piece 81 is connected if it is too short. This is because the strength to be weakened. As described above, the guide groove 31c provided in the connecting jig 31 can be changed to a round shape, and in this case, the square fixing pin 41 has only to be changed to a round fixing pin. The step portion 31 d of the connecting jig 31 inserted into the connected intermediate piece 81 was slid into the counterbore hole 21 a of the outer piece 21 and inserted.

  In this way, a chain member is manufactured, and the convex part 81b and the concave part 81c of the intermediate piece 81 are connected by a connecting pin in the same manner as described above, whereby a chain body 91 which is another embodiment of the present invention shown in FIG. Was made. This chain 91 also has a structure in which a hole for connection is not visible when viewed from any side direction, top surface direction, and bottom surface direction, and has improved decorativeness compared to a conventional chain body. Further, this chain 91 has an excellent effect in that it is easy to assemble because the number of frames is small compared to the above-described chain 71 of FIG.

  Since the chain of the present invention has a structure in which a hole for connection is not seen from any of the side direction, the top surface direction, and the bottom surface direction, the decorativeness is improved compared to the conventional chain body. Therefore, it can be applied to various types of decorative products, and can also be used for products that connect a plurality of parts in place of a conventional chain in mechanical equipment.

It is a top view before the assembly which shows the chain member used for the band for timepieces of this invention. (A) is the side view after the assembly of the chain member of this invention, (b) is the top view after the assembly of the chain member of this invention . (A)-(d) is a figure for demonstrating the assembly method of the chain member of this invention. (A)-(c) is a three-plane figure of the outer piece which comprises the chain member of this invention. (A)-(c) is a three-plane figure of the connection jig which comprises the chain member of this invention. (A)-(c) is a three-plane figure of the middle piece which comprises the chain member of this invention. It is a top view which shows the chain body of this invention. It is a side view which shows the chain body of this invention. (A) is a side view which shows the middle piece of other embodiment of this invention, (b) is a top view similarly. It is a top view which shows other embodiment of the chain body of this invention. It is a top view which shows other embodiment of the chain body of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chain member 11 (11a, 11b) Middle piece 11c Connecting pin insertion port 11d Hinge insertion port 11e Curved surface 21 Outer piece 21a Counterbored groove 21b Slope 21c Convex part 21d Concavity 31 Connecting jig 31a Key type hinge part 31b Head part 31c Guide groove 31d Step 41 Fixed pin 51 Connecting pin 71 Chain 81 Intermediate piece 81a Hinge insertion port 81b Convex portion 81c Recession 81d Connection pin insertion port 91 Chain

Claims (8)

And Chukoma having a hinge insertion opening, and a pair of outer frame which is disposed so as to sandwich the intermediate frame, connecting the in piece and the outer piece, the head and L-shaped hook-shaped hinge having on the opposite side and two connecting jig having parts, a chain member having a fixing pin for fixing the engagement of the hook-shaped hinge part, from both sides to the hinge insertion opening before Symbol in frame by inserting the connecting jig is engaged with the hook-shaped hinge portion of both said hinge insertion opening and said inserting the fixing pin in a gap between the hook-shaped hinge part fixed engagement of the hook-shaped hinge part, the two chain member, characterized in that each of the head of the connecting jig connecting the outer piece. The in frame multiple juxtaposed claim 1 Symbol mounting linkage member, characterized in that coupled with the connecting jig. Chain member according to claim 1, characterized in that integrally forming the outer piece to the head of the connecting jig. A chain structure comprising a plurality of the chain members according to any one of claims 1 to 3 . It has an insertion opening in said frame is the connecting pin, and inserting the connecting pin by superimposing the insertion opening between the in frame of the chain member adjacent connecting a plurality of the chain members together with said connecting pin The chain according to claim 4, wherein At least one corner, claim 4 or 5 chain body according to comprising the curved or inclined surface of the outer peripheral surface in said frame. Claims, characterized in that said end portions a curved concave and convex portions are formed respectively in the longitudinal direction of the outer frame, and as the recess of the front and rear of the outer frame when coupled with said protrusion overlaps Item 7. The linked body according to any one of Items 4 to 6 . The chain according to any one of claims 4 to 7 , wherein a slope for regulating roundness after connection is provided on a bottom surface side of the convex portion of the outer piece.

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