JP2015217273A - Band of piece connection structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a band of a piece connection structure which has a simplified structure and can connect an inner piece and an outer piece reliably even when the dimensional accuracy of a connection part is made to be lower than a conventional structure.SOLUTION: A connection shaft 3 has a cross-sectional shape of a substantially C shape and is a hollow elastic tube body having the same diameter over the entire length. The outer diameter of the connection shaft 3 is formed to be slightly larger than an inner diameter of a receiving hole 1a of an outer piece 1 and smaller than a diameter of a through hole 2a of an inner piece 2. When the end part of the connection shaft 3 is press-fitted in the receiving hole 1a of the outer piece 1, the outside of the end part of the elastic connection shaft 3 is brought into pressure contact with the inner wall of the receiving hole 1a while the end part of the elastic connection shaft 3 is bent in a radial direction since the outer diameter of the connection shaft 3 is larger than the inner diameter of the receiving hole 1a of the outer piece 1. When the connection shaft 3 is inserted into the through hole 2a of the inner piece 2, the connection shaft 3 is loosely fitted to the inner piece 2 since the outer diameter is smaller than the through hole 2a.

Description

  The present invention is applied to a watch band and a band for ornaments, and relates to a piece having a piece connection structure in which a plurality of pieces including an inner piece and an outer piece are connected by a connecting shaft.

  As a band of the conventional piece connection structure, a plurality of outer pieces and inner pieces are alternately arranged, and a pair of outer pieces arranged to face each other through the outer pieces are coupled by a connecting shaft, sequentially. A configuration in which adjacent outer pieces and inner pieces are connected by connecting shafts is generally used.

  A variety of structures have been proposed and implemented as a connection structure between the connection shaft and each piece. For example, a structure in which an outer piece is connected and fixed through an inner piece with a long screw, or a connecting shaft 13 inserted through a receiving hole 11a of the outer piece 11 and a through hole 12a of the inner piece 12 as shown in FIG. There is a structure in which a knurl 14 or the like is formed at the end, and this knurl 14 portion is press-fitted and fitted into the receiving hole 11 a of the outer piece 11.

  As shown in Patent Document 1, the present applicant attaches a tubular body having a substantially C-shaped cross section having a taper to the connecting shaft, and inserts the connecting shaft into a receiving hole formed in a piece in this state, thereby forming the tubular body. A piece connecting structure is proposed in which the large diameter side of the taper portion is locked to the inside of the small diameter portion of the piece receiving hole.

Utility Model Registration No. 3140055

  By the way, in the structure shown in FIG. 7, the quality of the press-fitted state between the outer diameter of the knurl 14 and the inner diameter of the receiving hole 11a of the outer piece 11 depends on the dimensional accuracy. 13 may come off due to the loosening of 13 pieces.

  Moreover, the connection structure of Patent Document 1 has an advantage that the connection between the piece and the connection shaft is reliable, and the connection between the pieces of the band can be maintained without trouble for a long period of time without being inadvertently disconnected after the connection. .

  However, this connecting structure has a tubular body with a tapered cross-section substantially in the shape of C, a large diameter portion and a small diameter portion are formed in the receiving hole, and the large diameter side of the tapered portion of the tubular body is a small diameter in the receiving hole of the piece. The structure was complicated, such as locking inside. For this reason, in the structure of the above-mentioned prior art, there is a problem that dimensional accuracy and good quality control are required in mass production, and manufacturing costs are also required.

  Accordingly, the present invention solves the above-described conventional problems and has a simplified structure, and the piece connection that can reliably connect the inner piece and the outer piece even if the dimensional accuracy of the connecting portion is less than that of the conventional structure. The object is to provide a band of structure.

  As described in claim 1, the band of the piece connection structure according to the present invention includes a plurality of inner pieces and outer pieces by connecting the inner piece and the outer pieces arranged on both outer sides of the inner piece by connecting shafts. In the band of the piece connecting structure constituted by connecting the two, the connecting shaft is a hollow elastic tubular body having a substantially C-shaped cross section and the same diameter over the entire length, and the connecting shaft is inserted into the inner piece. A through hole is formed, and the outer piece is formed without penetrating the receiving hole for receiving the end of the connecting shaft, the outer diameter of the end of the connecting shaft is larger than the inner diameter of the receiving hole, and the through hole is formed. It is formed smaller than the inner diameter of the hole, and the outer end of the connecting shaft is pressed and fixed to the inner wall of the receiving hole by press-fitting the end of the connecting shaft into the receiving hole. The central portion of the connecting shaft is loosely fitted.

  As described in claim 2, the band of the piece connection structure according to the present invention includes a plurality of inner pieces and outer pieces by connecting an inner piece and outer pieces arranged on both outer sides of the inner piece by connecting shafts. In the band of the piece connecting structure constituted by connecting the two, the connecting shaft is a hollow elastic tubular body having a substantially C-shaped cross section and the same diameter over the entire length, and the connecting shaft is inserted into the inner piece. A through hole is formed, and the outer piece is formed without penetrating the receiving hole for receiving the end of the connecting shaft, the outer diameter of the end of the connecting shaft is larger than the inner diameter of the receiving hole, and the through hole is formed. It is formed smaller than the inner diameter of the hole, an adhesive is put in the receiving hole, and the outer end of the connecting shaft is bonded and fixed to the inner wall of the receiving hole with the end of the connecting shaft being pressed into the receiving hole. And the central part of the connecting shaft is loosely fitted into the through hole of the inner piece. It is characterized in.

  According to the present invention, in the band of the piece connection structure according to claim 2, the hollow portion of the connection shaft serves as an adhesive reservoir in which excess adhesive enters so that the adhesive does not flow out to the inner piece. It is characterized by.

  According to the present invention, in the band of the piece connection structure according to claim 2, at least one of the periphery of the opening portion of the outer piece receiving hole and the periphery of the opening portion of the through hole of the inner piece facing the periphery of the opening portion of the receiving hole. An enlarged diameter portion is formed on the surface.

  According to the band of the piece connecting structure of the present invention, the connecting shaft is made into a hollow tube body having a substantially C shape and having the same diameter over the entire length without requiring special processing, and this connecting shaft is passed through the inner piece. The inner piece and the outer piece can be connected in a state where the inner piece can be rotated by an easy operation of inserting into the hole and fitting the end of the connecting shaft so as to press the inner wall of the receiving hole of the outer piece. it can.

  For this reason, as a whole, the piece connecting structure has been simplified, and the connecting shaft is bent in the radial direction, so that it is securely connected to the inner piece without increasing the dimensional accuracy of the inner diameter of the receiving hole of the outer piece. Costs can be reduced in various aspects, such as fixing the shaft.

  Moreover, the outer piece and the connecting shaft can be firmly fixed to each other by using an adhesive to prevent the connecting shaft from coming off from the outer piece.

  However, when the adhesive enters between the connecting shaft and the inner piece, the inner piece cannot be rotated and the function as a band is impaired. Can be prevented from entering the inside of the hollow portion and between the outer side of the connecting shaft and the inner wall of the through hole of the inner piece, and the hollow portion of the connecting shaft can function as an adhesive reservoir.

  Furthermore, an enlarged diameter portion is formed in at least one of the opening portions of the outer piece receiving hole and the inner piece through hole, and this enlarged diameter portion serves as an adhesive reservoir, thereby preventing the adhesive from interfering with the inner piece. Can be prevented.

It is a disassembled perspective view of the principal part in Embodiment 1 of the band of the piece connection structure which concerns on this invention. It is sectional drawing which shows the assembly | attachment state of the inner piece and connection shaft of Embodiment 1 shown in FIG. It is a perspective view which shows the connection state of the piece in Embodiment 1 shown in FIG. It is a disassembled perspective view of the principal part in Embodiment 2 of the band of the piece connection structure which concerns on this invention. (A), (b) is explanatory drawing of the adhesion process of the outer piece and connection shaft of Embodiment 2 shown in FIG. It is sectional drawing which shows the assembly | attachment state of the inner piece and connection shaft of Embodiment 2 shown in FIG. It is a perspective view which shows an example of the connecting shaft of the band in the past.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the drawings.

  1 and 2 are views for explaining Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes an outer piece formed so as not to penetrate a pair of receiving holes 1a, and 2 denotes an outer piece 1 An inner piece 3, which is arranged on the inner side and has a pair of through holes 2a, is a connecting shaft made of a hollow elastic tubular body having a substantially C-shaped cross section and the same diameter over the entire length. The connecting shaft 3 is formed so that the outer diameter is slightly larger than the inner diameter of the receiving hole 1 a of the outer piece 1 and smaller than the diameter of the through hole 2 a of the inner piece 2.

  In the first embodiment, one of the ends of the two connecting shafts 3 is press-fitted / inserted into the pair of receiving holes 1a of the outer piece 1 on one side. Then, since the outer diameter of the connecting shaft 3 is larger than the inner diameter of the receiving hole 1a of the outer piece 1, the outer end of the connecting shaft 3 having elasticity is pressed and fixed to the inner wall of the receiving hole 1a while bending in the radial direction. Will be.

  In this state, the two connecting shafts 3 are respectively inserted into the through holes 2a adjacent to the adjacent inner pieces 2. Since each connecting shaft 3 is smaller than the diameter of the through hole 2a of the inner piece 2, it is loosely fitted into the through hole 2a.

  Further, the other end portion of each connecting shaft 3 protruding from the inner piece 2 is press-fitted / inserted into the pair of receiving holes 1a of the outer piece 1 on the other side, so that the other end portion can be The outer side is also pressed and fixed to the inner wall of the receiving hole 1a.

  Assembling the outer piece 1, the inner piece 2 and the connecting shaft 3 as described above results in an assembled / connected state as shown in the sectional view of FIG. Then, by sequentially connecting a plurality of outer pieces 1 and inner pieces 2, a band as shown in FIG. 3 can be completed by simple assembly with a simplified structure.

  4 to 6 are views for explaining the second embodiment of the present invention. The second embodiment is different from the first embodiment in that the connecting shaft 3 is prevented from coming off from the outer piece 1. In this structure, the adhesive 4 is interposed between the end portion of 3 and the inner side of the receiving hole 1a so that the end portion of the connecting shaft 3 and the receiving hole 1a of the outer piece 1 are more firmly fixed.

  By using the adhesive 4 as described above, it is considered that the adhesive 4 enters between the connecting shaft 3 and the inner piece 2, and the adhesive 4 enters between the connecting shaft 3 and the inner piece 2. If both are fixed, the inner piece 2 cannot rotate and does not fit to the mounting body, and the function as a band is impaired.

  However, in the second embodiment, as shown in FIG. 5A, when assembling, the adhesive 4 is put in the receiving hole 1a of the outer piece 1, and in this state, as in the first embodiment, the connecting shaft When the end of 3 is press-fitted into the receiving hole 1a and fixed to the receiving hole 1a of the outer piece 1, the connecting shaft 3 is a hollow tube, so that the adhesive 4 is used as shown in FIG. It can enter into the hollow part of the connection shaft 3, and can be prevented from entering between the outside of the connection shaft 3 and the inner wall of the through hole 2a of the inner piece 2.

  That is, the hollow portion of the connecting shaft 3 functions as an unnecessary reservoir for the adhesive 4. However, it is necessary to adjust the usage amount of the adhesive 4 according to the dimensions of each part so as not to enter between the outside of the connecting shaft 3 and the inner wall of the through hole 2a of the inner piece 2.

  Furthermore, in the second embodiment, in order to more reliably prevent the adhesive 4 as described above from entering between the connecting shaft 3 and the inner piece 2, around the opening of the receiving hole 1 a of the outer piece 1. In addition to forming the enlarged diameter portion 1b, the enlarged diameter portion 2b is also formed around the opening of the through hole 2a of the inner piece 2, and these enlarged diameter portions 1b and 2b serve as an adhesive reservoir.

  The enlarged diameter portions 1b and 2b are not necessarily formed around the opening portion of the receiving hole 1a of the outer piece 1 and the through hole 2a of the inner piece 2, and are formed around at least one of the opening portions. do it.

  In addition, the shape or the number of installation of each member in the embodiment is not limited to that described above in the implementation, and it is necessary to appropriately select and determine it according to the usage pattern / specification of the band.

  The present invention can be applied to a piece member made of various materials in a watch band or a decorative band, for example, a piece member made of stainless steel, titanium, ceramic, etc., and in particular, a piece made of ceramic. Effective for members.

DESCRIPTION OF SYMBOLS 1 Outer piece 1a Receiving hole 1b Expanded diameter part 2 Inner piece 2a Through-hole 2b Expanded diameter part 3 Connecting shaft (hollow elastic tube)
4 Adhesive

Claims (4)

By connecting the inner piece and the outer piece arranged on both outer sides of the inner piece by a connecting shaft, a band of a piece connecting structure constituted by connecting a plurality of inner pieces and outer pieces,
The connecting shaft is a hollow elastic tubular body having a substantially C-shaped cross section and the same diameter over the entire length,
Forming a through hole into which the connecting shaft is inserted into the inner piece;
Forming the outer piece without penetrating the receiving hole for receiving the end of the connecting shaft,
The outer diameter of the end of the connecting shaft is larger than the inner diameter of the receiving hole and smaller than the inner diameter of the through hole,
By press-fitting the end of the connecting shaft into the receiving hole, the outer side of the end of the connecting shaft is pressed and fixed to the inner wall of the receiving hole, and the central portion of the connecting shaft is in contact with the through hole of the inner piece. A band with a piece connection structure, which is configured to be loosely fitted. By connecting the inner piece and the outer piece arranged on both outer sides of the inner piece by a connecting shaft, a band of a piece connecting structure constituted by connecting a plurality of inner pieces and outer pieces,
The connecting shaft is a hollow elastic tubular body having a substantially C-shaped cross section and the same diameter over the entire length,
Forming a through hole into which the connecting shaft is inserted into the inner piece;
Forming the outer piece without penetrating the receiving hole for receiving the end of the connecting shaft,
The outer diameter of the end of the connecting shaft is larger than the inner diameter of the receiving hole and smaller than the inner diameter of the through hole,
An adhesive is put into the receiving hole, and the outer end of the connecting shaft is bonded and fixed to the inner wall of the receiving hole in a state where the end of the connecting shaft is press-fitted into the receiving hole. On the other hand, the band of the piece connection structure is configured such that the central portion of the connection shaft is loosely fitted.   3. The band of the piece connection structure according to claim 2, wherein the hollow portion of the connection shaft serves as an adhesive material pool into which excess adhesive enters the inside so that the adhesive does not flow into the inner piece. .   The diameter-enlarged portion is formed in at least one of the periphery of the opening portion of the receiving hole of the outer piece and the periphery of the opening portion of the through hole of the inner piece facing the periphery of the opening portion of the receiving hole. Band with a frame connection structure.

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