JP2020081356A - Band connection structure - Google Patents

Abstract

To provide a band connection structure capable of connecting pieces without a C-ring.SOLUTION: A band 1 connection structure comprises: outer pieces 11, 14 and middle pieces 21, 12 arranged in a width direction W of the band 1; and a connection shaft 50 which is inserted into a connection hole 11c which extends along an arrangement direction of the outer pieces 11, 14 and the middle pieces 21, 12, and which has a diameter smaller than that of the connection hole 11c. The outer pieces 11, 14 comprise respectively: a cross hole 11d which extends in a direction crossing the extension direction of the connection hole 11c so as to face a side face of the connection shaft 50 being inserted into the connection hole 11c; and a regulation member 40 for regulating movement of the connection shaft 50 in an axial direction by contacting the connection shaft 50 inserted into the connection hole and inserted into the cross hole 11d.SELECTED DRAWING: Figure 9

Description

The present invention relates to a band connecting structure.

BACKGROUND ART As a band for mounting a wristwatch on an arm, there is a band in which a plurality of pieces are connected along a circumferential direction of a wrist. The piece body of such a band is configured by connecting outer pieces arranged at both ends in the width direction of the band and one or more middle pieces arranged between two outer pieces.

A so-called C-ring system is known as a connecting structure for the outer and middle frames. In the C-ring method, a thin hole extending in the width direction of the band is formed in each of the outer piece and the middle piece, the outer piece and the middle piece are arranged side by side, and a common thin pin is passed through each hole. The outer piece and the middle piece are connected to each other via this pin. In this connecting structure, a cylinder (C ring) having a C-shaped cross section is arranged in the hole in order to prevent the pin from falling out of the hole.

Although the inner diameter of the C ring is smaller than the outer diameter of the pin, the elasticity of the C ring allows the pin to pass through the inside of the C ring. When the pin is inserted through the C ring, the C ring and the pin are elastic. It is integrated by frictional force.

On the other hand, since the diameter of the hole portion where the C ring is arranged is larger than that of other portions of the hole, the outer peripheral surface of the C ring does not contact the surface of the hole, but the outside of the C ring that spreads out. Since the outer diameter is larger than the diameter of the other part of the hole, the C ring does not fall out of the hole. As a result, the pin integrated with the C ring is retained in the hole without falling off from the hole (see, for example, Patent Document 1).

JP, 2009-28445, A

However, since the C-ring used in the C-ring type connecting structure is very small, there is a problem that precise work is required and time-consuming in the connecting work of the pieces installed in the holes of the pieces and inserting the connecting pins. In addition, when the pin is removed from the bridge for maintenance or the like, the C ring is easily dropped from the hole and lost.

As a connecting structure without using a C ring, there is a structure in which a connecting pin is press-fitted into a piece and the pieces are connected by the frictional force of this press-fitting. There is a risk of giving in.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a band connecting structure for connecting pieces without using a C-ring and without press-fitting a connecting shaft.

According to the present invention, the outer piece and the middle piece arranged in the width direction of the band, and the outer piece and the middle piece, which are inserted into connection holes that are connection holes extending along the arranged direction, And a connecting shaft having a diameter smaller than that of the connecting hole, wherein the outer piece faces a side surface of the connecting shaft inserted into the connecting hole in a direction intersecting the extending direction of the connecting hole. An extended intersecting hole is formed, and the connecting shaft is moved in the axial direction in contact with a portion of the connecting shaft inserted into the connecting hole, the connecting shaft protruding into the intersecting hole. It is a band connection structure having a regulating member for regulating.

According to the band connecting structure of the present invention, it is possible to connect the pieces without using the C ring and without press-fitting the connecting shaft.

It is the perspective view which looked at the band for watches of an example to which the band connecting structure concerning the present invention was applied from the front side. It is the perspective view which looked at the band shown in FIG. 1 from the back surface side. It is a perspective view which shows the outer piece of the band shown in FIG. It is sectional drawing which shows the cross section by the vertical surface which contains the cross hole mentioned later along the length direction of the outer piece shown in FIG. It is a perspective view which shows the center piece of the band shown in FIG. It is sectional drawing which shows the cross section by the vertical surface along the length direction of the middle piece shown in FIG. FIG. 3 is a plan view showing a connecting shaft that connects an outer piece and a middle piece of the band shown in FIGS. FIG. 6 is a perspective view showing a spherical ball, which is an example of a regulating member, inserted into a cross hole of the outer piece shown in FIGS. It is a schematic diagram explaining the state in which the communication shaft is inserted in the communication hole, the regulation member is inserted in the cross hole, and the band is formed. It is sectional drawing equivalent to FIG. 4 in the state shown in FIG. FIG. 11 is a perspective view showing a columnar regulation member as another example of the regulation member. As another example of the restricting member, a perspective view showing a restricting member formed in a substantially columnar shape in which a diameter of an upper portion is formed larger than a diameter of a lower portion and a slot for bending the upper portion in a radial direction is formed. is there. FIG. 11 is a cross-sectional view corresponding to FIG. 10 showing a process in which the restricting member is inserted into the cross hole, showing a state in which the upper portion passes through the position M. FIG. 11 is a cross-sectional view corresponding to FIG. 10 showing a process in which the restriction member is inserted into the cross hole, and shows a state after the upper portion has passed the position M. A connecting shaft having a small-diameter shaft portion formed with a smaller diameter than the other portion formed with the diameter d1 in a part in the axial direction, and in a state of being in contact with the small-diameter shaft portion when inserted into the cross hole. FIG. 10 is a perspective view corresponding to FIG. 9 showing a connecting structure of a band having a stopped (fixed) regulating member. FIG. 5 is a cross-sectional view corresponding to FIG. 4 showing an outer piece formed by intersecting two connecting holes with different intersecting holes. It is the perspective view seen from the front surface side equivalent to FIG. 1 which shows the connection structure of the band provided with the outer piece in which the small hole for removing the control member was formed, and the outer piece in which the small hole was formed. .. It is sectional drawing which shows the cross section of the outer piece shown in FIG. FIG. 19 is a cross-sectional view corresponding to FIG. 18, showing the outer piece of the embodiment in which the internal thread, which is an example of the structure for removing the restriction member, is formed on the restriction member itself.

Hereinafter, an embodiment of a band connecting structure according to the present invention will be described with reference to the drawings.

<Embodiment 1>
FIG. 1 is a perspective view of a wrist watch band 1 to which the band connecting structure according to the present invention is applied, as seen from the front side, and FIG. 2 is the band 1 shown in FIG. 1 as seen from the back side. FIG. 3 is a perspective view showing the outer piece 11 of the band 1 shown in FIG. 1, and FIG. 4 includes a cross hole 11d, which will be described later, along the length direction L of the outer piece 11 shown in FIG. 5 is a perspective view showing the middle piece 21 of the band 1 shown in FIG. 1, and FIG. 6 is a vertical plane of the middle piece 21 shown in FIG. 5 along the length direction L. It is sectional drawing which shows the cross section by.

7 is a plan view showing a connecting shaft 50 that connects the outer pieces 11, 14 of the band 1 shown in FIGS. 1 and 2 and the middle pieces 21, 12, 22, 13, 23, and FIG. 4 is a perspective view showing a restricting member 40 which is a spherical ball inserted into a cross hole 11d (14d) of the outer piece 11 (14) shown in FIG.

As shown in FIG. 1, the band 1 to which the connecting structure of the present invention is applied includes outer pieces 11, 14, middle pieces 21, 12, 22, 13, 23, a connecting shaft 50, a restricting member 40, Is equipped with. Of these, the outer pieces 11 and 14, the middle piece 21-23, and the connecting shaft 50 are formed of the same material, for example, titanium.

As shown in FIGS. 1 and 2, the band 1 includes an outer piece 11, a middle piece 21, a middle piece 12, a middle piece 22, a middle piece 13, a middle piece 23, and an outer piece 14 in this order. 21, 12, 22, 13, 23, 14 are arranged side by side in the width direction W of the band 1. That is, the outer pieces 11, 14 are pieces arranged at both ends of the band 1 in the width direction W, and the middle pieces 21, 12, 22, 13, 23 are. It is a piece arranged between both outer pieces 11 and 14.

Further, as shown in FIGS. 1 and 2, the outer piece 11, the middle piece 12, the middle piece 13 and the outer piece 14 are arranged such that their positions in the length direction L are aligned with each other. 23 are arranged such that the positions in the length direction L are aligned with each other.

The positions of the outer piece 11, the middle piece 12, the middle piece 13, and the outer piece 14 in the length direction L and the positions of the middle piece 21, the middle piece 22, and the middle piece 23 in the length direction L are the middle piece 21. , 22, and 23 are arranged so as to be displaced from each other by about half the length, the outer piece 11, the middle piece 21, the middle piece 12, the middle piece 22, the middle piece 13, the middle piece 23, and the outer piece 14 are connected shafts. They are connected by 50. By connecting a plurality of bands 1 obtained by connecting the outer piece and the middle piece in this way using the connecting shaft 50, a wrist band such as a wristwatch is configured.

As shown in FIGS. 3 and 4, the outer piece 11 is formed with two connecting holes 11c, 11c, which are connecting holes extending in the width direction W, which are arranged side by side in the length direction L of the band 1. There is.

FIG. 9 is a schematic view illustrating a state in which the connecting shaft 50 is inserted into the connecting hole 11c and the regulating member 40 is inserted into the intersecting hole 11d to form the band 1, and FIG. 10 shows the state shown in FIG. It is sectional drawing equivalent to FIG.

The connecting shafts 50, 50 having a diameter smaller than the diameters of the connecting holes 11c, 11c are inserted into the connecting holes 11c, 11c of the outer piece 11, respectively, as shown in FIGS.

In addition, as shown in FIGS. 3 and 4, the outer piece 11 is arranged between the two connecting holes 11c and 11c from the back surface 11b side toward the front surface 11a side, that is, the thickness of the band 1. Intersection holes 11d extending in the direction T and intersecting these two connecting holes 11c, 11c are formed. The cross hole 11d does not penetrate the front surface 11a.

As shown in FIG. 4, the cross hole 11d communicates with the two connecting holes 11c and 11c, respectively, whereby a part of the connecting shaft 50 inserted into the connecting hole 11c projects into the cross hole 11d. That is, part of the side surface of the connecting shaft 50 inserted into the connecting hole 11c projects into the intersecting hole 11d, and the intersecting hole 11d faces the side surface of the connecting shaft 50. Since the outer piece 14 has the same configuration as the outer piece 11, the description of the outer piece 14 will be omitted.

As shown in FIGS. 5 and 6, two connecting holes 21c, 21c, which are connecting holes extending in the width direction W, are formed in the middle piece 21 so as to be aligned in the length direction L of the band 1. There is. A connecting shaft 50 having a diameter smaller than the diameter of the connecting hole 21c is inserted into each connecting hole 21c. Since the middle pieces 22 and 23 have the same structure as the middle piece 21, the description of these middle pieces 22 and 23 is omitted.

Further, since the middle pieces 12, 13 have the same configuration as the middle pieces 21-23 except that the dimension in the width direction W is different, the description of the middle pieces 12, 13 will be omitted.

The outer piece 11, the middle piece 12, the middle piece 13, and the outer piece 14, and the middle piece 21, the middle piece 22, and the middle piece 23 are staggered as shown in FIG. 1 in a zigzag arrangement. ), the connecting holes 11c, 21c, 12c, 22c, 13c, 23c, 14c of these pieces 11, 21, 12, 22, 13, 23, 14 are aligned on a straight line with their axes being common. It will be arranged.

Then, in a state where the connecting shaft 50 shown in FIG. 7 is inserted into the connecting holes 11c, 21c, 12c, 22c, 13c, 23c, and 14c arranged in line, all the pieces 11, 21, 12 are inserted. , 22, 13, 23, 14 are connected via a connecting shaft 50 to form a band 1 as shown in FIGS.

As shown in FIG. 7, the connecting shaft 50 is a columnar pin having a constant diameter d1 in the longitudinal direction (corresponding to the width direction W of the band 1). The diameter d1 is smaller than the diameter of the connecting hole 11c and the like. Therefore, the connecting shaft 50 is in a state of being loosely inserted into the connecting hole 11c or the like.

The restriction member 40 is a member inserted into the cross hole 11d (14d) of each outer piece 11 (14), and is a ball formed into a spherical shape having a diameter d2, as shown in FIG. The regulation member 40 is made of a transparent material such as glass, and may be colored. Note that the regulation member 40 is not limited to one made of a brittle material such as glass, but may be made of an elastic material such as metal, resin, or silicone, or a mineral.

Here, as shown in FIG. 10, the inner surfaces 11f, 11f (14f, 14f) of the two connecting holes 11c, 11c (14c, 14c) formed in the outer piece 11 (14) along the length direction L. The longest dimension L1 between is the sum (=2×d1) of the diameters d1 of the connecting shafts 50, 50 inserted into the two connecting holes 11c, 11c (14c, 14c) and the intersecting hole 11d (14d). It is set to be smaller than the sum (=2×d1+d2) of the regulating member 40 and the diameter d2 (L1<2×d1+d2).

Therefore, the regulating member 40 is inserted into the cross hole 11d (14d) as shown in FIG. 10, and the cross hole of the connecting shafts 50 and 50 inserted into the connecting holes 11c and 11c (14c and 14c), respectively. The connecting shafts 50, 50 are pressed against the inner surfaces 11f, 11f (14f, 14f) of the outer piece 11 (14) that define the connecting holes 11c, 11c (14c, 14c) in contact with the protruding portions of the 11d (14d). .. Thereby, the regulation member 40 regulates (prevents) the axial movement of the coupling shaft 50 inserted into the coupling holes 11c, 11c (14c, 14c).

The connecting structure of the band 1 configured as described above has the connecting hole 11c of the outer piece 11, the connecting hole 21c of the middle piece 21, the connecting hole 12c of the middle piece 12, the connecting hole 22c of the middle piece 22 and the middle piece 13. The connecting shaft 50 is inserted and connected to the connecting hole 13c, the connecting hole 23c of the middle piece 23, and the connecting hole 14c of the outer piece 14.

Since the diameter d1 of the connecting shaft 50 is smaller than the diameter of the connecting holes 11c, 21c, 12c, 22c, 13c, 23c, 14c, the connecting shaft 50 is inserted into the connecting holes 11c, 21c, 12c, 22c, 13c, 23c, 14c. In doing so, since the press-fitting is not a tight insertion, a large frictional force does not act on the connecting shaft 50. Therefore, the situation where the connecting shaft 50 buckles due to press fitting does not occur.

On the other hand, in a state where the connecting shaft 50 is inserted into the connecting holes 11c, 21c, 12c, 22c, 13c, 23c, 14c, the outer pieces 11, 14 intersect with each other from the rear surface 11b, 14b side. The regulation member 40 is inserted into the holes 11d and 14d.

The maximum dimension L1 between the inner surfaces 11f, 11f (14f, 14f) of the connecting holes 11c, 11c (14c, 14c) is the sum (=2×d1) of the diameters d1 of the two connecting shafts 50, 50 and the regulating member 40. Is set to be smaller than the sum (=2×d1+d2) with the diameter d2 of (L1<2×d1+d2).

Therefore, in the restricting member 40 inserted into the intersecting hole 11d (14d), the portion having the maximum diameter d2 in the cross-sectional contour of the plane orthogonal to the intersecting hole 11d (14d) is inserted into the two connecting holes 11c (14c). It cannot pass between the two connected shafts 50 (the dimension is less than d2).

However, when a load is applied to the regulating member 40 in the direction of the bottom surface 11e (14e) of the cross hole 11d (14d), the connecting shafts 50, 50 and the outer piece 11 (14) (the connecting hole 11c of the elastic material). The inner wall surface (14c) etc.) is elastically deformed. As a result, in the regulation member 40, as shown in FIG. 10, the portion having the maximum diameter d2 in the cross-sectional contour is connected in the depth direction (the direction of the front surface 11a (14a) in the thickness direction T). After passing through the position M connecting the centers C1 and C1 of the connecting shafts 50 and 50 inserted into the hole 11c (14c), the state is such that the bottom surface 11e (14e) is abutted.

Even if the connecting shafts 50, 50 and the outer piece 11 (14) are not made of an elastic material, for example, when the connecting shafts 50, 50 and the outer piece 11 (14) are in contact with each other at a shallow angle due to a curved surface or the like, sliding at the contact portion The restriction member 40 can pass through the position M.

That is, in the restricting member 40 inserted into the intersecting hole 11d (14d), the portion having the maximum diameter d2 in the cross-sectional contour of the plane orthogonal to the intersecting hole 11d (14d) is closer to the position M in the intersecting hole 11d (14d). Is also placed in a deep position.

At this time, a reaction force toward the center C1 of the connecting shaft 50 acts on the connecting shaft 50 by pressing the inner surface 11f (14f) of the outer piece 11 (14) with the force F. Then, the regulation member 40 is provided with a vertical reaction force from the bottom surface 11e (14e) of the cross hole 11d (14d) toward the back surface 11b (14b) and a reaction force from each coupling shaft 50, 50 toward the center C2 of the regulation member 40. Receive each. Due to these reaction forces, the regulation member 40 is stable in a state surrounded by the bottom surface 11e (14e) and the two connecting shafts 50, 50 and is in a stopped state (fixed state), as shown in FIG. Therefore, the restriction member 40 does not fall off the outer piece 11 (14).

On the other hand, since each connecting shaft 50 presses the inner surface 11f (14f) of the outer piece 11 (14) with the force F, the peripheral surface 50a of the connecting shaft 50 and the inner surface 11f (14f) of the outer piece 11 (14). A frictional force occurs in the axial direction of the connecting shaft 50, that is, in the width direction W of the band 1 between and. Then, each connecting shaft 50 is fixed to both outer pieces 11 and 14 by the above-mentioned frictional force, and is restricted from moving in the axial direction.

As a result, the middle pieces 21, 12, 22, 13, 23 arranged between the outer pieces 11, 14 maintain the state arranged between the outer pieces 11, 14 and are connected as the band 1. Is maintained.

As described above, according to the connecting structure of the band 1 of the present embodiment, the pieces 11, 21, 12, 22, 13, 13, 23, 14 are assembled without using the C ring and without press-fitting the connecting shaft 50. Can be connected.

Here, since the connecting shaft 50 is pressed against the outer pieces 11 and 14, not only the movement in the axial direction but also the rotation direction around the axis is restricted, but the outer pieces 11 and 14 are excluded. Further, since the loosely inserted state is maintained for all the middle pieces 21, 12, 22, 13, 23, the rotation around the axis is in a light state. Therefore, the band 1 having such a connection structure is freely bent between the middle pieces arranged in the length direction L, and realizes a flexible bending without friction due to friction, so that the band 1 can be wound around a wrist or the like. It is possible to improve the adhesiveness of.

In the connecting structure of the band 1 according to the present embodiment, the restricting member 40 inserted into the cross holes 11d and 14d formed in the outer pieces 11 and 14 is a spherical ball, but the restricting member in the connecting structure of the band according to the present invention. The member is not limited to a sphere.

That is, the restricting member in the band connecting structure according to the present invention is a portion of the connecting shaft 50 inserted into the connecting holes 11c and 14c, which is inserted into the connecting holes 11d and 14d, and which protrudes into the intersecting holes 11d and 14d. Any shape may be used as long as it has a function of pressing the connecting shaft 50 against the inner surfaces 11f, 14f of the outer pieces 11, 14 that define the connecting holes 11c, 14c.

FIG. 11 is a perspective view showing a regulation member 41 formed in a cylindrical shape as another example of the regulation member. In the connecting structure of the band 1 of the above-described embodiment, instead of the ball restricting member 40, for example, a cylindrical restricting member 41 shown in FIG. 11 can be applied.

As described above, even with the connection structure of the band 1 to which the cylindrical regulation member 41 is applied, the same operation and effect as the connection structure of the band 1 to which the ball regulation member 40 is applied can be exhibited. it can.

In order to stabilize the columnar regulating member 41 inserted in the intersecting hole 11d, it is preferable to form a taper or a step in which the diameter d2 of the column becomes smaller as it goes downward in the figure.

FIG. 12 shows, as another example of the regulating member, a substantially cylindrical shape in which the diameter of the upper portion 42a is formed larger than the diameter d2 of the lower portion 42c, and the slot 42b for bending the upper portion 42a in the radial direction is formed. 13 and 14 are sectional views corresponding to FIG. 10 showing a process in which the regulating member 42 is inserted into the cross hole 11d, and FIG. 13 shows a state where the upper portion 42a passes through the position M. 14 and FIG. 14 shows the state after the upper portion 42a has passed the position M, respectively.

In the connecting structure of the band 1 of the above-described embodiment, instead of the columnar regulating member 41 shown in FIG. 11, for example, a substantially columnar shape in which the upper portion 42a has a larger diameter than the lower portion 42c shown in FIG. It is also possible to apply the restriction member 42 of. In this manner, the substantially cylindrical regulation member 42 in which the diameter of the upper portion 42a is formed larger than the diameter of the lower portion 42c is in a state in which the regulation member 42 is inserted into the cross hole 11d as in the case of forming a taper or a step. Can be stabilized with.

That is, as shown in FIG. 13, when the upper portion 42a having a larger diameter than the lower portion 42c passes through the position M, the two portions branched by the slot 42b bend inward, so that the diameter of the upper portion 42a is increased. It becomes smaller and the upper portion 42a can pass through the position M.

Then, as shown in FIG. 14, the upper portion 42a passing through the position M and arranged at a position deeper than the position M expands outward in the radial direction due to the restoring force of the elastic deformation of the flexure, and has a larger diameter. It is stable when hooked on the connecting shaft 50 and fixed in the cross hole 11d.

On the other hand, due to the restoring force of the elastic deformation of the flexure, the restricting member 42 expanding outward in the radial direction presses each connecting shaft 50 against the inner surface 11 f of the outer piece 11. As a result, a frictional force along the axial direction of the connecting shaft 50 is generated between the peripheral surface 50a of each connecting shaft 50 and the inner surface 11f of the outer piece 11, and each connecting shaft 50 is fixed to both outer pieces 11 and 14. To be done.

In the connecting structure of the band 1 of each of the above-described embodiments, when the restricting member presses the connecting shaft, the frictional force generated between the peripheral surface of the connecting shaft and the inner surface of the outer piece defining the connecting hole causes the connecting shaft. However, the band connecting structure according to the present invention is not limited to the one in which the axial movement is restricted by frictional force.

FIG. 15 shows a connecting shaft 50 having a small-diameter shaft portion 51 formed with a smaller diameter than the other portion 52 formed with the diameter d1 in a part in the axial direction, and in a state of being inserted into the cross hole 11d, FIG. 10 is a perspective view corresponding to FIG. 9 showing a connection structure of the band 1 having a restriction member 40 that is stopped (fixed) while being in contact with the small diameter shaft portion 51.

For example, as shown in FIG. 15, the band connecting structure according to the present invention is smaller than the other part 52 of the diameter d2 in the part of the connecting shaft 50 loosely inserted in the connecting hole 11c, which is exposed in the cross hole 11d. The small diameter shaft portion 51 formed with a diameter may be formed, and the regulating member 40 inserted into the cross hole 11d may be stopped while being in contact with the small diameter shaft portion 51.

In the example of FIG. 15, the restricting member 40 is in contact with the small diameter shaft portion 51 at a position deeper than the position M shown in FIG. 10 of the cross hole 11d. Therefore, the restriction member 40 presses the connecting shaft 50 when passing through the position M, and elastically deforms the connecting shaft 50 and the outer piece 11 (the inner wall surface of the connecting hole 11c (14c) thereof).

Then, in the state after the regulating member 40 has passed the position M, the connecting shaft 50 and the outer piece 11 have returned to the state before the elastic deformation, so that the regulating member 40 moves in the direction of dropping from the cross hole 11d. In order to pass the position M, the connecting shaft 50 and the outer piece 11 must be elastically deformed, so that the restriction member 40 is maintained in a stopped state without dropping from the cross hole 11d.

On the other hand, in the connecting shaft 50, the restricting member 40 is in contact with the small-diameter shaft portion 51, and even if the connecting shaft 50 tries to move in the axial direction, the other portion 52 having a larger diameter than the small-diameter shaft portion 51 has the restricting member 40. You cannot move to a position that touches.

The connecting structure of the band 1 of the embodiment configured as described above prevents the connecting shaft 50 from moving in the axial direction between the peripheral surface of the connecting shaft 50 and the inner surface of the outer piece 11 defining the connecting hole 11c. Although the frictional force to the extent of restriction is not generated, the movement of the connecting shaft 50 in the axial direction can be restricted by the difference in diameter between the small diameter shaft portion 51 and the other portion 52. Therefore, also in this embodiment, the pieces 11, 21, 12, 22, 13, 23, 14 can be connected without using the C ring and without press-fitting the connecting shaft 50.

In addition, the connection structure of the band 1 of each of the above-described embodiments is one in which the two connection shafts 50, 50 are restricted by one restriction member 40, but the connection structure of the band according to the present invention has these forms. Not limited.

FIG. 16 is a cross-sectional view corresponding to FIG. 4, showing the outer piece 11 formed by intersecting the two connecting holes 11c and 11c with different intersecting holes 11d and 11d, respectively.

As shown in FIG. 16, for example, the band connecting structure according to the present invention is formed by intersecting two connecting holes 11c and 11c formed in the outer piece 11 with different intersecting holes 11d and 11d, respectively. It may be

In the embodiment configured in this manner, the connecting shafts 50, 50 loosely inserted in the two connecting holes 11c, 11c are inserted in the cross holes 11d, 11d formed in the connecting holes 11c, 11c, respectively. The restricting members 40, 40 respectively restrict the movement in the axial direction. That is, also in this embodiment, it is possible to connect the pieces 11, 21, 12, 22, 13, 23, 14 without using the C ring and without press-fitting the connecting shaft 50.

The embodiment in which the two connecting shafts 50, 50 are restricted by the single restricting member 40 can reduce the number of the cross holes 11d to be formed and the number of the restricting members 40 inserted in the cross holes 11d. The number of parts can be reduced, the number of assembly steps for inserting the regulation member 40 into the cross hole 11d can be reduced, and the manufacturing cost of the band 1 can be reduced.

In the connecting structure of the band 1 according to each of the above-described embodiments, the restricting member 40 cannot be removed from the band 1, or even if it can be removed, the take-out operation is difficult, but the connecting structure of the band according to the present invention is The restriction member may be configured to be removable.

FIG. 17 shows a connecting structure of the band 1 including an outer piece 11 having an opening 11g for removing the regulating member 40 and an outer piece 14 having an opening 14g formed therein. FIG. 18 is a perspective view seen from the side, and FIG. 18 is a cross-sectional view showing a cross section of the outer piece 11 (14) shown in FIG.

In the example of FIGS. 17 and 18, the cross hole 11d (14d) formed in the outer piece 11 (14) is formed so as to penetrate the outer piece 11 (11). Then, the opening 11g (14g) formed on the side of the cross hole 11d (14d) opposite to the side into which the regulating member 40 is inserted (on the front surface 11a (14a) side of the outer piece 11 (14)) is formed. Smaller than the maximum dimension in the cross-sectional contour of the regulating member 40 (the diameter of the ball in the case of the regulating member 40 which is the ball shown in FIG. 18) by the plane orthogonal to the depth direction of the intersecting hole 11d (14d). It is formed with dimensions.

Since the cross hole 11d (14d) is formed in this way, if it is necessary to remove the restriction member 40, as shown in FIG. The rod-shaped tool 70 having a diameter smaller than that of the opening 11g (14g) is inserted into the opening 11g (14g) formed in the surface 11a (14a).

Then, the tip of the tool 70 inserted into the intersecting hole 11d (14d) from the opening 11g (14g) pushes the regulating member 40 in the direction (downward in the drawing) to be removed from the intersecting hole 11d, and the regulating member 40 is connected. The shaft 50 and the outer piece 11 are elastically deformed, pass between the two connecting shafts 50, 50, and fall off from the cross hole 11d (14d).

Thus, the restriction of the movement of the connecting shaft 50 in the axial direction is released, and the connection of the band 1 can be released by moving the connecting shaft 50 in the axial direction.

As shown in FIG. 17, since the openings 11g and 14g formed on the front surfaces 11a and 14a of the outer pieces 11 and 14 are smaller than the diameter of the restriction member 40, the restriction member 40 has the openings 11g and 14g. It does not fall off from the cross holes 11d and 14d through the through hole, and the stop state of the regulating member 40 inside the cross holes 11d and 14d is not accidentally released due to the existence of the openings 11g and 14g.

Further, the openings 11g and 14g formed on the front surfaces 11a and 14a of the outer pieces 11 and 14 are provided with the restriction member 40 inserted into the cross holes 11d and 14d on the outside of the band 1 attached to the wrist. Can be seen. Therefore, by positively visually recognizing the colored or otherwise regulated member 40, it is possible to exert an effect such as aesthetic appearance on the design side of the band 1.

FIG. 19 is a cross-sectional view corresponding to FIG. 18, showing the outer piece 11 (14) of the embodiment in which the female screw 42d that is an example of the structure for removing the regulating member 40 is formed on the regulating member 40 itself.

In the band connecting structure according to the present invention, it is possible to form a structure in which the restriction member stopped in the cross hole is removed without forming the openings 11g and 14g on the front surface side of the band 1.

That is, in the example shown in FIG. 19, for example, a female screw 42d is formed on the lower surface side (the inlet side of the intersecting hole 11d (14d)) of the regulating member 40 inserted into the intersecting hole 11d (14d). .

In this embodiment, by engaging the male screw 81 with the female screw 42d by the tool 80 having the male screw 81 that meshes with the female screw 42d, the regulating member 42 and the tool 80 are integrated, and the tool 80 is removed from the cross hole 11d. By pulling in the direction (downward in the drawing) to make it possible, the regulating member 42 integrated with the tool 80 can be dropped from the cross hole 11d (14d).

Further, each embodiment exemplifies a wristwatch band, but the band connecting structure according to the present invention is not limited to the wristband connecting structure, but may be a bracelet or other ornamental band connecting structure. Can also be applied.

1 band 11,14 outer piece 11c,12c,13c,14c,21c,22c,23c connecting hole 11d,14d cross hole 12,13,14,22,23 middle piece 40 regulating member 50 connecting shaft W width direction

Claims (7)

The outer piece and the middle piece arranged in the width direction of the band, and the insertion hole inserted into the connection hole which is a connection hole extending along the arrangement direction of the outer piece and the middle piece, With a connecting shaft with a small diameter,
The outer piece is formed with an intersecting hole extending in a direction intersecting the extending direction of the connecting hole so as to face a side surface of the connecting shaft inserted in the connecting hole.
Of a band having a restricting member that is inserted into the intersecting hole, is in contact with a portion of the connecting shaft that is inserted into the connecting hole and projects into the intersecting hole, and that restricts the connecting shaft from moving in the axial direction. Connection structure. The connection holes are formed by arranging two in the length direction of the band,
The intersecting hole is formed between the two connecting holes so as to face side surfaces of the two connecting shafts respectively inserted into the two connecting holes,
The band connecting structure according to claim 1, wherein the restricting member inserted into the cross hole restricts movement of the two connecting shafts respectively inserted into the two connecting holes in the axial direction. A position where the maximum dimension in the cross-sectional contour of a plane orthogonal to the intersecting hole of the regulating member is deeper than the central position of the connecting shaft inserted into the connecting hole in the depth direction of the intersecting hole. The band connecting structure according to claim 1 or 2, wherein the restriction member is arranged so as to be. The band connecting structure according to claim 1, wherein the restricting member is a sphere. The intersecting hole is formed to penetrate the outer piece,
The opening of the intersection hole on the side opposite to the side where the restriction member is inserted is formed to have a size smaller than the maximum size in the cross-sectional contour of the restriction member formed by a plane orthogonal to the intersection hole. The band connecting structure according to any one of 1 to 4. The band connecting structure according to any one of claims 1 to 5, wherein a portion of the connecting shaft, which is in contact with the regulating member, has a smaller diameter than other portions. 7. The band connecting structure according to claim 1, wherein the outer piece, the middle piece, and the connecting shaft are made of titanium.