JP4366459B2 - Linkage structure for jewelry band - Google Patents

Description

  The present invention relates to a band for connecting a plurality of pieces using a connecting pin so as to be rotatable, and more particularly, to a connecting structure for a band for jewelry attached to an arm or the like.

  As a band for connecting a plurality of pieces rotatably with a connecting pin, the connecting pin can be removed by screwing a female screw portion provided in the through hole of the piece and a male screw portion provided in the connecting pin. A connecting structure that prevents detachment was common. However, in this connection structure, there is a case where the threaded portion between the piece and the connecting pin is loosened due to the rotation of the piece during use, and the connecting pin may be removed from the through hole of the piece.

  Therefore, after the male screw portion provided on the adjustment pin is screwed into the female screw portion provided in the through hole of the piece, the male screw portion is completely passed through the female screw portion, thereby artificially adjusting the screw. There has been proposed a connection structure in which the adjustment pin cannot be removed unless the male screw portion of the pin is screwed into the female screw portion of the piece (see, for example, Patent Document 1).

  In this connection structure, as shown in FIG. 13, an internal thread portion 2b is provided in one of the communicating through holes 2a and 4a provided in the adjacent pieces 2 and 4, respectively, and an adjustment inserted through the through holes 2a and 4a. A male screw portion 6 b is provided at the tip of the pin 6. The male screw portion 6b at the tip of the adjustment pin 6 is inserted into the through hole 2a from the right in FIG. 13 and passes through the through hole 4a, and is then screwed into the female screw portion 2b. Thereafter, the male screw portion 6b completely passes through the female screw portion 2b and reaches the left end of the through hole 2a in the figure, and at this time, the stepped portion 2c in the through hole 2a and the contact surface 6c of the adjustment pin 6 come into contact with each other. As a result, the advancement of the adjustment pin 6 is stopped.

  On the other hand, in this connection structure, when the adjustment pin 6 is removed, a screwdriver fixed to the slot 6a while pressing the end surface of the tip provided with the male screw portion 6b from the left side in the drawing using a tool such as a pin. The adjusting pin 6 is removed from the through holes 2a and 4a by rotating a tool such as.

  As described above, in the conventional connection structure, when the adjustment pin 6 is removed, it must be rotated while being pressed in the direction in which the adjustment pin 6 is removed, and there is a problem that workability is very poor.

  Further, when the band is used, the end of the male screw portion 6b and the end of the female screw portion 2b are in contact with each other, and a part of the screw thread is crushed so that it is difficult to be screwed and the adjustment pin 6 is difficult to remove. .

Further, since the male screw portion 6b of the adjustment pin 6 that has passed through the female screw portion 2b reaches the end of the through hole 2a, the male screw portion 6b can be seen from the outside, and the appearance is poor. There was also.
Japanese Utility Model Publication No. 54-35673

  The problem to be solved by the present invention is to provide a connecting structure for a band for jewelry, which has a simple structure, good workability, no loosening of screws, reliable connection of pieces, and good appearance. There is.

The connecting structure for a jewelry accessory band according to the present invention includes at least one first protrusion formed on one piece and protruding in the longitudinal direction of the band, and formed on the other piece and protruding in parallel in the longitudinal direction of the band. A male screw portion provided on a connecting pin on a female screw portion provided on the second convex portion, and having at least two second convex portions adjacent to both sides of the first convex portion on both sides in the short side of the band. In the connecting structure of the accessory band for connecting the one piece and the other piece,
A female screw portion provided on one of the second convex portions, a through hole formed in each of the other second convex portions and the first convex portion in a band short direction, and the first convex portion A fixing pipe mounted in a through hole provided in the
The through hole provided in the first convex portion is a stepped hole, and the fixing pipe is attached to the large diameter hole of the stepped hole, and the large diameter hole is provided on the side facing the female screw portion. The small diameter hole of the stepped hole has an inner diameter that matches the connecting pin;
The connecting pin has a recess provided along an outer periphery thereof, and the fixing pipe has a protrusion protruding inward from a position corresponding to the recess along an inner periphery thereof,
The connecting pin is inserted through a through hole provided in the first and second protrusions and the fixing pipe, and a male screw portion of the connecting pin is inserted into the female screw portion of the second protrusion. that prevents loosening of the threaded portions the projections Mate was screwed by Rukoto is engaged the connecting pin to the fixing pipe of the fixing pipe in the recess of the joint pin with screwing It is.
In addition, the fixing pipe has a slit that opens to the outside along the band short direction. In addition, the inner diameter of the guide hole provided on the inlet side of the female screw portion is set to a smaller value than the outer diameter of the fixing pipe. The female thread portion is formed in a bottomed hole.

  In the connecting structure of the accessory band according to the present invention, the connecting pipe and the connecting pin fitted in the through hole of the piece are locked to prevent the connecting pin from being loosened. The rise can be suppressed.

  Further, since the fixing pipe and the connecting pin are locked to suppress the rotation of the connecting pin, the screw portion to be screwed is not loosened, and the connecting pin can be prevented from falling off. it can.

  Further, since the pieces can be connected and the connecting pins can be locked and released simply by rotating the connecting pins, the operability is excellent. For this reason, it is easy to adjust the length of the band, and the appearance is not impaired even when the connecting pin is repeatedly attached and detached.

  Moreover, by making the hole which forms a female thread part into a bottomed hole with a bottom, the exit side of a female thread part is closed, a screw part is not visible from the outside, and the appearance is good.

  In the connecting structure for a jewelry accessory band according to the present invention, the first convex portion provided on one piece is sandwiched between the second convex portions provided on the other piece from the short side of the band. And inserting a connecting pin into a through hole provided in one of the first and second convex portions and communicating with the female screw portion provided in the other second convex portion. The piece is connected by screwing the male screw part at the tip of the connecting pin. In this structure, a fixing pipe is mounted in the through hole of the first convex portion, and a connecting pin is inserted and locked in the fixing pipe. Thereby, the free rotation of the connecting pin is suppressed, and it is possible to prevent the screwed state between the female screw portion of the piece and the male screw portion of the connecting pin from being loosened.

  1 is a partially enlarged cross-sectional view of a band in a connected state showing a connecting structure for a jewelry accessory band according to Embodiment 1 of the present invention, FIG. 2 is a partially enlarged cross-sectional view of the other piece shown in FIG. 1, and FIG. 4 is a partially enlarged sectional view of one piece shown in FIG. 4, FIG. 4 is an enlarged sectional view of the fixing pipe shown in FIG. 1, FIG. 5 (a) is a side view of the connecting pin shown in FIG. It is an exploded sectional view showing a connection procedure.

  One piece 10 shown in FIG.1 and FIG.3 has the 1st convex part 10a which protrudes in a band longitudinal direction. The first convex portion 10a is provided with a through hole 10b in the band short direction. The through hole 10b is a stepped hole having a step portion 10c provided therein, and a large-diameter hole 10d is formed from the step portion 10c to the left opening in the figure. The large-diameter hole 10d is provided on the side facing the female screw portion of the other piece to be described later.

  The other piece 12 shown in FIG. 1 and FIG. 2 protrudes in the band longitudinal direction and is paired with a pair of second protrusions 12a arranged in parallel in the band short direction with an interval suitable for the first protrusion 10a described above. , 12b. The second convex portion 12a is provided with a through-hole 12c in the band short direction, and the second convex portion 12b in the present embodiment has an inner surface facing the second convex portion 12a. A bottomed hole 12d with a bottom formed in the band short direction is provided. A female screw portion 12e is provided in the bottomed hole 12d, and the inner diameter of the guide hole 12j in the opening is set smaller than the outer diameter of the fixing pipe described later.

  When the pieces 10 and 12 are assembled in the band longitudinal direction, the first protrusions 10a and the second protrusions 12a and 12b are arranged in the band short direction, and the through holes 10b and 12c and the bottomed hole 12d. All communicate. The pieces 10 and 12 may have different shapes as long as they have the above-described structure, or may have the same shape.

  The connecting pin 14 shown in FIGS. 1 and 5 (a) has an outer diameter suitable for the through holes 10b, 12c and the bottomed hole 12d of the pieces 10, 12, and has a piece at the tip that fits in the bottomed hole 12d. It has a male screw portion 14a that fits the twelve female screw portions 12e. In addition, a concave portion 14b having an annular shape and a substantially V-shaped cross section that fits a protrusion of a fixing pipe, which will be described later, is formed along the circumferential surface at a substantially central portion that fits within the large-diameter hole 10d of the through hole 10b. Yes. Further, a groove 14c that matches the tool is provided on the end face of the base portion that fits in the through hole 12c.

  The fixing pipe 16 shown in FIGS. 1 and 4 is set so that its outer diameter matches the large diameter hole 10d of the through hole 10b and its inner diameter matches the substantially central portion of the connecting pin 14. In addition, a protrusion 16 a that fits into the recess 14 b of the connecting pin 14 is provided in the approximate center of the fixing pipe 16. The protrusion 16a has a mountain shape protruding toward the inside of the fixing pipe 16, and has a shape that is deformed by pressing the center of the fixing pipe 16 in the radial direction from the outside. . The fixing pipe 16 may be made of any material such as metal or resin, but it is preferable to use a material in which the protrusion 16a can be elastically deformed in the radial direction.

  In the connecting structure having the above-described configuration, as shown in FIG. 6, the fixing pipe 16 is first attached to the large-diameter hole 10d of the through hole 10b of the piece 10, and then the pieces 10 and 12 are assembled in the band longitudinal direction. The first convex portion 10a and the second convex portions 12a and 12b are arranged in parallel. At this time, the through holes 12c and 10b and the bottomed hole 12d communicate with each other. Further, since the fixing pipe 16 is set so that the inner diameter of the guide hole 12j of the bottomed hole 12d is smaller than the outer diameter thereof, the edge of the step portion 10c and the guide hole 12j (the inner surface of the second convex portion 12b). Both ends abut against the band, and movement in the short band direction is restricted. For this reason, even if the fixing pipe 16 is not bonded or joined, the position is defined. Here, the connecting pin 14 is inserted into the communicating through holes 12c, 10b, the bottomed hole 12d, and the fixing pipe 16, and the male threaded part 14a is screwed into the female threaded part 12e of the bottomed hole 12d.

  When the male screw portion 14a is screwed into the female screw portion 12e as described above, the connecting pin 14 advances so as to push the protruding portion 16a of the fixing pipe 16 outward, and the male screw portion 14a and the female screw portion 14a. When 12e is completely screwed, the recess 14b of the connecting pin 14 and the protruding portion 16a of the fixing pipe 16 are fitted. At this time, the rotation of the connecting pin 14 is restricted by the inner surface of the recess 14 b being pressed by the protruding portion 16 a of the fixing pipe 16. As a result, the connecting pin 14 does not rotate during use and the screw portion does not loosen.

  When the connecting pin 14 is removed, it is only necessary to attach a tool such as a screwdriver to the slot 14c and rotate it in the direction of removing the screw portion. When the male screw portion 14a and the female screw portion 12e are unscrewed, the connecting pin 14 is retracted to the right in FIG. 1 by the action of the screw, and the movement at this time causes the concave portion 14b of the connecting pin 14 to The fitting state with the protrusion 16a of the fixing pipe 16 is also released.

  FIG. 7 is a partially enlarged sectional view of the band in a connected state showing the connecting structure of the accessory band according to the second embodiment of the present invention, FIG. 8 is a partially enlarged sectional view of the other piece shown in FIG. 7, and FIG. (B) is an enlarged side view and an enlarged front view of the fixing pipe shown in FIG. In addition, since the one piece 10 and the connecting pin 14 in the second embodiment are the same as those in the first embodiment, the same reference numerals are given and the description thereof is omitted. Also, the other piece 12 and the fixing pipe 16 are basically the same as those in the first embodiment, so that the same parts are denoted by the same reference numerals, and only different parts are denoted by new reference numerals. Only different parts will be described in detail.

  A through hole 12f is provided in the second convex portion 12b of the piece 12 shown in FIGS. 7 and 8 instead of the bottomed hole 12d of the first embodiment. The through-hole 12f is provided with the same female thread portion 12e as in the first embodiment at the substantially center thereof, and the inner diameter of the guide hole 12j facing the large-diameter hole 10d of the first convex portion 10a is the fixing pipe 16. Is set smaller than the outer diameter. Further, the inner diameter of the through-hole 12g directed from the female screw portion 12e to the outside (left side in the figure) is set smaller than that of the female screw portion 12e, and the male screw portion 14a of the connecting pin 14 is advanced during screwing. In addition, the male screw portion 14a is not visible from the outside. Thus, by providing the through hole 12f instead of the bottomed hole 12d, it is possible to facilitate formation and cleaning of the hole.

  The fixing pipe 16 shown in FIGS. 7 and 9 is basically the same as that of the first embodiment, and is provided with a protruding portion 16a protruding inward along the peripheral surface at a substantially central position. The characteristic part of the fixing pipe 16 is a slit 16b provided in the axial direction, and is formed with the same width from one end to the other end of the fixing pipe 16. The fixing pipe 16 having the slit 16b has a structure having elasticity in the radial direction.

  When the fixing pipe 16 shown in FIGS. 7 and 9 is used, when the male screw portion 14a of the connecting pin 14 and the female screw portion 12e of the piece 12 are screwed together or removed, the protruding portion 16a is connected to the connecting pin 14. This makes it easier to push away in the radial direction. This facilitates the attachment / detachment of the connecting pin 14, in particular, the removal, and improves the workability.

10 is a partially enlarged cross-sectional view of a band in a connected state showing a connecting structure for a jewelry accessory band according to Embodiment 3 of the present invention, and FIGS. 11A and 11B are enlarged side views of a fixing pipe shown in FIG. FIG. 12 is an enlarged front view, and FIG. 12 is an enlarged side view of the connecting pin shown in FIG. In addition, since the pieces 10 and 12 in the third embodiment are the same as those in the first embodiment, the same reference numerals are given, and the description thereof is omitted. Also, since the connecting pin 14 and the fixing pipe 16 are basically the same as those in the first and second embodiments, the same portions are denoted by the same reference numerals, and only different portions are newly denoted. Only different parts will be described in detail.

  The central portion 14d located in the vicinity of the center of the connecting pin 14 shown in FIGS. 10 and 12, that is, in the large diameter hole 10d of the through hole 10b of the piece 10, is provided with the concave portion 14b in the first and second embodiments on the outer periphery thereof. It is not formed and is configured to form a uniform bar shape.

  10 and FIG. 11, the slit 16b is provided in the axial direction in a part of the fixing pipe 16 as in the second embodiment, but the protrusion 16a in the first and second embodiments is substantially in the center. Is not provided, and the inner and outer surfaces are formed in a uniform pipe shape. The inner diameter of the fixing pipe 16 is set slightly smaller than the outer diameter of the central portion 14d of the connecting pin 14, and the outer diameter is smaller than the inner diameter of the large-diameter hole 10d of the through-hole 10b and the through-hole 10b. It is set larger than the inner diameter.

  In the present embodiment, the locking between the fixing pipe 16 and the connecting pin 14 inserted therein is not due to the fitting of the concave portion 14b and the protruding portion 16a as in the first and second embodiments. The inner circumferential surface of the fixing pipe 16 is pressed by the outer circumferential surface of the central portion 14 d of the connecting pin 14 due to the elasticity in the radial direction of the working pipe 16. For this reason, when the connecting pin 14 is removed, there is no resistance as in the case where the concave portion 14b gets over the protruding portion 16a as in the first and second embodiments, and the connecting pin 14 is rotated by rotating the connecting pin 14. Since the friction with the fixing pipe 16 is also reduced, the connecting pin 14 can be easily removed.

  The fixing pipe 16 shown in FIGS. 10 and 11 is provided with a slit 16b to facilitate elastic deformation in the radial direction. However, depending on the material of the fixing pipe 16 or when the deformation amount may be small, etc. Instead of providing the slit 16b, a simple pipe shape may be used.

  In all the structures of Examples 1, 2, and 3, the fixing pipe 16 is mounted in the through hole 10b of the piece 10, but the fixing pipe 16 is mounted in the through hole 12c of the piece 12. You can also. In this case, a large-diameter hole is provided at the end of the through-hole 12c facing the through-hole 10b, and the fixing pipe 16 is mounted therein.

  Further, in all the structures of the first, second, and third embodiments, a large-diameter head 14e as shown in FIG. In this case, the concave portion 12h that fits the head portion 14e is provided in the opening of the through hole 12c of the piece 12, and the head portion 14e contacts the bottom step portion 12i, thereby positioning the connecting pin 14. It is also effective in preventing screw loosening. In particular, the third embodiment works effectively.

  In all the structures of Examples 1, 2, and 3, the pieces 10 and 12 may have any other structure except for the structure such as the female screw portion and the through hole. For example, although the same shape is used as the pieces 10 and 12 in the embodiment, the pieces 10 and 12 may be separate shapes as the base piece and the connecting piece. Further, the number of the first and second convex portions 10a, 12a, and 12b can be increased and can be set according to the design.

The connecting structure for a jewelry accessory band according to the present invention is used in a band for attaching an accessory such as a watch. In this connection structure, a fixing pipe that can be easily formed by molding or pressing is used, and the connection pin and the piece can be formed by simple cutting and drilling. it can. For this reason, manufacture is easy and cost can also be reduced.

It is a partial expanded sectional view of the band in the connection state which shows the connection structure of the band for accessories which concerns on Example 1 of this invention. It is a partial expanded sectional view of the other piece shown in FIG. It is a partial expanded sectional view of one piece shown in FIG. It is an expanded sectional view of the fixing pipe shown in FIG. (A) is a side view of the connecting pin shown in FIG. 1, and (b) is a side view showing a partial modification of the connecting pin. It is a disassembled sectional view which shows the connection procedure of the piece shown in FIG. It is a partial expanded sectional view of the band in the connection state which shows the connection structure of the band for jewelry according to Example 2 of the present invention. It is the elements on larger scale of the other piece shown in FIG. (A), (b) is an enlarged side view and an enlarged front view of the fixing pipe shown in FIG. It is a partial expanded sectional view of the band in the connection state which shows the connection structure of the jewelry accessory band which concerns on Example 3 of this invention. (A), (b) is an enlarged side view and an enlarged front view of the fixing pipe shown in FIG. FIG. 11 is an enlarged side view of the connecting pin shown in FIG. 10. It is a partial expanded sectional view which shows the conventional band connection structure.

Explanation of symbols

2, 4 piece 2a through hole 2b female screw part 2c step part 4a through hole 6 adjustment pin 6a slot 6b male screw part 6c contact surface 10, 12 piece 10a first convex part 10b through hole 10c step part 10d large diameter hole 12a , 12b Second convex portion 12c Through hole 12d Bottom hole 12e Female screw portion 12f Through hole 12g Through portion 12h Recessed portion 12i Stepped portion 12j Guide hole 14 Connecting pin 14a Male screw portion 14b Recessed portion 14c Slot 14d Center portion 14e Head Part 16 Fixing pipe 16a Projection part 16b Slit

Claims (4)

At least one first protrusion formed on one piece and projecting in the longitudinal direction of the band, and formed on the other piece and projecting in parallel in the longitudinal direction of the band. And having at least two second convex portions adjacent to both sides in the direction, and screwing a male screw portion provided on a connecting pin to a female screw portion provided on the second convex portion, In the connecting structure of the accessory band that connects the other piece,
A female screw portion provided on one of the second convex portions, a through hole formed in each of the other second convex portions and the first convex portion in a band short direction, and the first convex portion A fixing pipe mounted in a through hole provided in the
The through hole provided in the first convex portion is a stepped hole, and the fixing pipe is attached to the large diameter hole of the stepped hole, and the large diameter hole is provided on the side facing the female screw portion. The small diameter hole of the stepped hole has an inner diameter that matches the connecting pin;
The connecting pin has a recess provided along an outer periphery thereof, and the fixing pipe has a protrusion protruding inward from a position corresponding to the recess along an inner periphery thereof,
The connecting pin is inserted through a through hole provided in the first and second protrusions and the fixing pipe, and a male screw portion of the connecting pin is inserted into the female screw portion of the second protrusion. And the threaded screw portion is prevented from loosening by fitting the protrusion of the fixing pipe into the concave portion of the connecting pin and engaging the connecting pin with the fixing pipe. A connecting structure for a characteristic accessory band. Coupling structure according to claim 1 Symbol placement trinkets band the fixing pipe is characterized by having a slit that opens to the outside along the band widthwise direction.   2. The band connecting structure for a jewelry accessory according to claim 1, wherein an inner diameter of the guide hole provided on the inlet side of the female screw portion is set to be smaller than an outer diameter of the fixing pipe.   The said female screw part is formed in the hole with a bottom, The connection structure of the band for jewelry of Claim 1 characterized by the above-mentioned.

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