JP2011235008A - Insertion type clasp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clasp which has a thin casing and a structure in which the surface and the backside can have the same shape.SOLUTION: The clasp (10) includes: a hollow casing (30) with an opening formed on one side face; an insertion member (20) inserted into the casing via the opening; a first frame (80) and a second frame (90) which are connected to each other to form the casing; a support shaft (130) connecting the first frame and the second frame so as to be pivotally operated; an energizing means (200) energizing the first and second frames in a direction closing the opening; and an engagement means (140) which is formed on the casing and fixes the insertion member onto the casing. The center of the insertion member and that of the support shaft are placed almost on the same line.

Description

  The present invention relates to a clasp (connector), and more particularly to a clasp applied to accessories such as a necklace and a bracelet.

  With reference to FIGS. 6 to 7 of the accompanying drawings, a clasp (connector) used for accessories such as a necklace and a bracelet as shown in Patent Document 1 will be described. The clasp 1000 mainly includes an insertion member 1100 and a casing 1200. The insertion member 1100 is inserted into the opening 1230 of the casing 1200 and fixed inside the casing 1200, so that a clasp is formed. The

  First, referring to FIG. 6, the insertion member 1100 has a bar shape, and is inserted into the housing 1200 and fixed. In order to facilitate insertion, a tapered head portion 1150 is formed at the insertion side end portion, and a connecting portion 1160 having a ring portion 1170 to be connected to an accessory or the like is formed at the opposite end portion. A concave engaging groove 1180 is formed in the central circumferential portion. On the other hand, the housing 1200 has a box shape, and is mainly composed of a lid body 1210 (see FIG. 7) having an entire lower surface opened, and a bottom body 1220 fitted into the lid body and having an entire upper surface opened. Is done. An opening 1230 having a diameter slightly longer than the cross-sectional diameter of the insertion member 1100 is formed on one side surface in the longitudinal direction of the lid body 1210. The bottom body 1220 and the lid body 1210 are connected to each other via a support shaft 1240, and the bottom body 1220 can pivot about the support shaft 1240. Further, a pressing portion 1250 made of irregularities on a plurality of lines is formed on one surface side of the bottom body 1220.

  Next, referring to FIG. 7, two dome portions 1260 having an inner diameter substantially the same as the outer diameter of the insertion member 1100 are formed inside the bottom body 1220. One side surface corresponding to the opening 1230 includes a semicircular locking portion 1270 having a diameter substantially the same as the outer diameter of the engaging groove portion 1180 of the insertion member 1100. Further, a substantially U-shaped coil spring 1280 is wound around the outer periphery of the support shaft 1240, and the bottom body 1220 is urged about the support shaft 1240 in the counterclockwise direction in FIG. ing.

Next, a procedure for connecting the insertion member 1100 and the housing 1200 in the clasp 1000 will be described.
First, the user inserts the head portion 1150 of the insertion member 1100 into the opening 1230 of the housing 1200. Further, when the insertion member 1100 is pushed into the housing 1200, the insertion member 1100 advances into the housing 1200 with its outer peripheral surface contacting the inner peripheral surface of the dome 1260, and eventually the head of the insertion member 1100. The tip of the part 1150 contacts the coil spring 1280. Next, the coil spring 1280 is pushed up by the insertion member 1100, and when the engagement groove 1180 of the insertion member 1100 reaches the opening 1230 of the bottom body 1220 in this state, the locking portion 1270 is engaged by the biasing force of the coil spring 1280. Engages with the groove 1180. As a result, the insertion member 1100 is fixed to the housing 1200.

  On the other hand, when the insertion member 1100 and the housing 1200 are separated from each other, first, the user presses the pressing portion 1250 of the bottom body 1220 with a finger. Accordingly, the bottom body 1220 pivots in the clockwise direction in FIG. 5 around the support shaft 1240 against the urging force of the coil spring 1280. As a result, the engaging portion 1270 of the bottom body 1220 engaged with the engaging groove portion 1180 of the insertion member 1100 is detached from the engaging groove portion 1180. When the user pulls out the insertion member 1100 from the housing 1200 in this state, the insertion member 1100 and the housing 1200 are separated from each other.

  By applying the above clasp 1000 to an accessory such as a necklace, it is possible to provide an accessory that can be easily connected.

JP2000-316616

  However, the clasp having the above structure has the following disadvantages.

  The shape of the casing 1200 of the clasp 1000 is not the same. Assume that this clasp is applied to an accessory such as a necklace. In general, the clasp 1000 serves as a pendant head and is attached to the user so that the lid 1210 side of the housing 1200 faces up. However, when the accessory is twisted at this time, the clasp 1000 is inverted and the bottom body 1220 side is faced up. Become. This greatly damages the aesthetics of the accessory.

  If the clasp is created to have the same front and back housings with this structure, the shape of the back surface 1120 of the housing must be the same as the front surface 1210 of the housing. For this reason, the thickness of the clasp increases, and a thin clasp cannot be provided.

  The present invention has been devised in view of the above-mentioned disadvantages, and an object of the present invention is to provide a clasp that can be provided with a thin casing that has the same shape on both sides.

  The invention of claim 1 devised to solve the above-described problem is that a hollow housing having an opening formed on one side surface and an insertion member inserted into the housing through the opening are interconnected. And the first frame and the second frame forming the housing, the support shaft that connects the first frame and the second frame so as to be pivotable, and the inside of the housing. Biasing means for urging the first frame and the second frame in a direction to close the opening; and locking means formed on the casing and fixing the insertion member to the casing. . Further, the center of the insertion member in the axial direction and the center of the support shaft are arranged on substantially the same line.

  Invention of Claim 2 created in order to solve the said subject WHEREIN: In the clasp of Claim 1, the said 1st frame and the said 2nd frame have substantially the same external shape, Furthermore, An axial center of the insertion member, a center of the support shaft, and an axial center of the housing are arranged on substantially the same line.

  Invention of Claim 3 created in order to solve the said subject WHEREIN: The clasp of Claim 1 or 2 WHEREIN: The said insertion member has a taper-shaped front end and the groove | channel formed in the outer peripheral surface, The locking means is a protrusion that engages with the groove by the urging force of the urging means, the protrusion is formed on a side surface inside the housing, and the opening is formed more than the support shaft. It is arranged on the side surface side.

  Invention of Claim 4 created in order to solve the said subject WHEREIN: The clasp of Claim 1 or 2 WHEREIN: The said insertion member has a taper-shaped front-end | tip and the groove | channel formed in the outer peripheral surface, The locking means is a peripheral surface of the opening, and the peripheral surface is engaged with the groove by the urging force of the urging means.

  Invention of Claim 5 created in order to solve the said subject is the clasp as described in any one of Claim 1 thru | or 4. WHEREIN: The said biasing means is a coil spring, The said spindle is a rod-shaped member. It is characterized by being.

  Invention of Claim 6 created in order to solve the said subject is a clasp as described in any one of Claim 1 thru | or 4, The said biasing means is a double torsion spring which has two torsion parts, Both ends thereof are bent by approximately 90 °, and further, a substantially U-shape is formed between the two twisted portions, and the portion bent by approximately 90 ° functions as the support shaft.

  Invention of Claim 7 created in order to solve the said subject is an accessory provided with the clasp as described in any one of Claim 1 thru | or 6.

  In the first aspect of the present invention, the axial center of the insertion member and the center of the support shaft are arranged on substantially the same line. In this structure, restrictions for thinning the housing are minimized, so that a clasp having a thin housing can be provided.

  In the invention of claim 2, the center of the insertion member in the axial direction, the center of the support shaft, and the center of the axial direction of the housing are arranged on substantially the same line. Therefore, it is possible to provide a clasp having a thin casing with the same shape as the front and back.

  In the invention of claim 3, the insertion member is fixed to the casing simply by inserting the insertion member into the casing. Therefore, it is not necessary for the user to perform a specific action such as pressing a button to fix the insertion member, and it is possible to provide a clasp that can be easily connected even by a user with a disability in eyes or hands.

  In the invention of claim 4, since it is not necessary to provide the locking portion inside the housing, the housing can be reduced in size accordingly.

  In the invention of claim 5, since the coil spring is used as the urging means and the support shaft has a rod shape, a clasp having a simple structure can be provided.

  In the invention of claim 5, since the double torsion spring is used as the urging means, it is easy to fix the urging means inside the casing at the time of assembly. In addition, if a structure in which this double torsion spring is hooked and fixed in a groove provided inside the housing is adopted, the support shaft portion can be made invisible from the outside, and a clasp with a smart appearance is provided. It is possible.

  In the invention of claim 5, the clasp of the present invention can be provided in the form of an accessory.

  According to the present invention, it is possible to provide a clasp having a thin casing and a structure capable of making the front and back of the casing have the same shape.

1 is a perspective view of a clasp according to a first embodiment of the present invention. It is an exploded view of the clasp housing according to the first embodiment of the present invention. It is sectional drawing of the clasp which concerns on the 1st Embodiment of this invention, and is a figure for demonstrating a connection procedure. It is sectional drawing of the clasp which concerns on the 2nd Embodiment of this invention. It is a figure of the clasp which concerns on the 3rd Embodiment of this invention, (a) is sectional drawing, (b) is a figure of a double torsion spring. It is a perspective view of the clasp which patent documents 1 show. It is sectional drawing of the clasp which patent document 1 shows.

A clasp structure according to a first embodiment of the present invention will be described in detail below with reference to the accompanying drawings of FIGS.
FIG. 1 shows a clasp 10 according to an embodiment of the present invention. As shown in the figure, the clasp 10 is mainly composed of an insertion member 20 and a housing 30.

  The insertion member 20 has a rod shape, a tapered head portion 40 formed at one end, a connecting portion 60 formed at the other end and having a hole, and penetrating through the hole of the connecting portion, so as to be a rosary of accessories. The ring part 70 to be connected and the engaging groove part 50 provided in a concave shape on the outer periphery are provided.

  The housing 30 has a hollow box shape, and mainly includes a first frame 80 and a second frame 90 having substantially the same outer shape, and an opening formed at one end of the first and second frames. 100, a connecting portion 110 and a ring portion 120 provided on the other end side and provided on the second frame (see FIG. 2 for details), and a supporting shaft for connecting the first and second frames to each other 130. In addition, the other end side of the housing 30 has a structure like a slit, so that the first frame 80 and the second frame 90 can pivot about the support shaft 130. .

  Next, the internal structure of the housing 30 will be described with reference to FIG. The first frame 80 has an insertion hole 190 for inserting the support shaft 130 on both side surfaces, a locking portion 140 (see FIG. 3) for fixing the insertion member 20 on the back surface, and also protrudes on the back surface. A spring base 150 (see FIG. 3) for fixing the formed spring. On the other hand, the second frame 90 has a dome portion 160 formed in a dome shape from the side surface to the upper surface, and a pair of support shafts having a hole for inserting the support shaft 130 formed so as to protrude from the back surface. Parts 170, 170, and a spring base 180 that also projects from the back surface. A coil spring 200 is disposed between the first frame 80 and the second frame 90. Both ends of the coil spring 200 are fixed to the spring base 150 of the first frame 80 and the spring base 180 of the second frame 90, respectively. Usually, both the frames are formed with the opening 100 around the support shaft 130. Energize in the closing direction.

Next, a procedure for connecting the insertion member 20 of the clasp 10 to the housing 30 and a procedure for releasing the connection will be described with reference to FIGS.
First, the user inserts the head 40 of the insertion member 20 into the opening 100 of the housing 30 (see FIG. 3A). When inserted, the insertion member 20 is further pushed into the housing 30 from the opening 100. Eventually, the head 40 of the insertion member 20 comes into contact with the locking portion 140 of the first frame 80 (see FIG. 3B). In response to this, the first frame 80 pivots in a direction against the urging force of the coil spring 200 (see FIG. 3C). Thereafter, the insertion member 20 advances to the inside of the dome portion 160 of the second frame 90 in a state where the outer periphery of the head 40 is in contact with the tip of the locking portion 140, and the insertion groove 20 and the housing of the insertion member 20. When the locking portion 140 of the body 30 is aligned, the locking portion 140 is engaged with the engagement groove portion 50 by the biasing force of the coil spring 200 (see FIG. 3D). As a result, the insertion member 20 is fixed, and the connection between the insertion member 20 and the housing 30 is completed.

On the other hand, when the insertion member 20 and the housing 30 are separated from each other, first, the user applies a force to the housing 30 in the direction shown in FIG. 3 (see FIG. 3E). Accordingly, the first frame 80 pivots against the urging force of the coil spring 200, and the engagement of the locking portion 140 with the engagement groove 50 is released. If the insertion member 20 is pulled in this state, it can be pulled out from the housing 30. As a result, the insertion member 20 and the housing 30 are separated (see FIG. 3A).
As described above, the insertion member 20 and the housing 30 of the clasp 10 can be connected and separated by a simple procedure.

  In addition, the material of each member which comprises the clasp 10 is not specifically limited, You may use arbitrary materials, such as various metals and resin. Similarly, the manufacturing method of each member may also use arbitrary processing methods, such as shaving, bonding, etching, mold processing using a die or a press.

  In the clasp 10 having the above structure, when the insertion member 20 and the housing 30 are connected, the center of the insertion member 20 in the axial direction, the center of the support shaft 130 of the housing 30, and the axial direction of the housing 30. Are arranged on the same line. Therefore, the housing 30 can be made thin. When this clasp is applied to an accessory such as a necklace or a bracelet, the appearance of the accessory is not impaired.

  Furthermore, since the housing 30 is composed of the first frame 80 and the second frame 90 having substantially the same outer shape, the clasp 10 can be suitably applied to accessories such as a necklace. That is, when the housing 30 is used as an accessory pendant head, even if the accessory is twisted and the housing 30 is inverted, the front and back of the housing 30 are substantially the same shape, and the appearance of the accessory is not impaired.

  Although the structure of the clasp 10 according to the first embodiment of the present invention has been described above, the present invention is not limited to this structure. The clasp structure according to the second embodiment and the third embodiment of the present invention will be described below with reference to FIGS. 4 and 5, respectively. In addition, in each member of the clasp shown in these drawings, the same reference numeral is given to the same member as the clasp 10 according to the first embodiment.

  First, FIG. 4 shows a cross section of the clasp 300 according to the second embodiment of the present invention when connected. The clasp 300 according to the second embodiment differs from the clasp 10 according to the first embodiment in the locking structure. The first frame 80 of the clasp 10 according to the first embodiment includes the locking portion 140 on the back surface, but the casing 310 of the clasp 300 according to the second embodiment does not include the locking portion. . Instead, the peripheral part of the opening 320 of the housing 310 functions as a locking part. As illustrated, the peripheral portion of the opening 320 of the housing 310 is engaged with the engagement groove portion 50 of the insertion member 20 by the urging force from the coil spring 200. Thereby, the insertion member 20 is connected to the housing 310. Since the clasp 300 according to the second embodiment does not need to include a locking portion inside the casing 310, the casing 310 can be made smaller than the casing 30 of the clasp 10 according to the first embodiment. it can.

  Next, FIG. 5A shows a cross-section when the clasp 400 according to the third embodiment of the present invention is connected. The clasp 400 according to the second embodiment does not have the coil spring 200 like the clasp 10 according to the first embodiment. Instead, a double torsion spring 410 is provided. The double torsion spring 410 is shown in FIG. The double torsion spring 410 shown in this figure has two torsional portions 410a and 410a, the portion 410b between the torsional portions forms a substantially U-shape, and both ends of the spring are 90 ° each. The support shafts 420 and 420 are bent.

  The reason why the portion 410b between the torsional portions 410a and 410a of the double torsion spring 410 forms a substantially U-shape is that the insertion operation of the insertion member 20 is not hindered. Further, the support shaft portion 420 functions to connect the first frame 80 and the second frame 90 so as to be pivotable. In this clasp 400, the support shaft 130 becomes unnecessary, which contributes to a reduction in the number of parts. Further, if a groove is formed inside the housing 30 and the support shaft portions 420 and 420 of the double torsion spring 410 are fitted into the groove, the tip of the support shaft portion 420 is not exposed to the outside from the housing 30. Therefore, a smarter appearance can be provided.

  As mentioned above, although this invention was demonstrated using embodiment shown in drawing, these are only an illustration and those skilled in this technical field can variously be within the range which does not deviate from the range and the meaning of this invention. It will be understood that modifications and variations are possible. Accordingly, the scope of the invention should not be determined by the described embodiments, but by the technical spirit described in the claims.

DESCRIPTION OF SYMBOLS 10 Clasp 20 Insertion member 30 Housing | casing 40 Head 50 Engaging groove part 60 Connection part 70 Ring part 80 1st frame 90 2nd frame 100 Opening part 110 Connection part 120 Ring part 130 Spindle 140 Locking part 150 Spring stand 160 Dome portion 170 Support shaft fixing portion 180 Spring base 190 Insertion hole 200 Coil spring 300 Clasp 310 Housing 320 Opening portion 400 Clasp 410 Double torsion spring 410a Torsion portion 410b U-shaped portion 420 Support shaft portion

Claims (7)

A hollow housing with an opening formed on one side;
An insertion member inserted into the housing via the opening;
A first frame and a second frame interconnected to form the housing;
A spindle that pivotally connects the first frame and the second frame;
An urging means disposed inside the housing and urging the first frame and the second frame in a direction to close the opening;
Locking means formed on the housing and fixing the insertion member to the housing;
With
The clasp characterized in that the axial center of the insertion member and the center of the support shaft are arranged on substantially the same line. The first frame and the second frame have substantially the same outer shape,
2. The clasp according to claim 1, wherein an axial center of the insertion member, a center of the support shaft, and an axial center of the housing are arranged on substantially the same line. The insertion member has a tapered tip and a groove formed on the outer peripheral surface,
The locking means is a protrusion that engages with the groove by the urging force of the urging means, and the protrusion is formed on a side surface inside the housing, and the opening is formed more than the support shaft. The clasp according to claim 1 or 2, wherein the clasp is disposed on a side surface. The insertion member has a tapered tip and a groove formed on the outer peripheral surface,
The clasp according to claim 1 or 2, wherein the locking means is a peripheral surface of the opening, and the peripheral surface is engaged with the groove by a biasing force of the biasing means. The biasing means is a coil spring;
The clasp according to any one of claims 1 to 4, wherein the support shaft is a rod-shaped member.   The urging means is a double torsion spring having two torsion portions, and both ends thereof are bent by approximately 90 °, and the two torsion portions form a substantially U-shape. The clasp according to any one of claims 1 to 4, wherein the bent portion functions as the support shaft.   The accessory provided with the clasp as described in any one of Claims 1 thru | or 6.

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