JPH09182609A - Fastener for ring-shaped accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the manufacturing cost, and also to miniaturize a fastener of a ring-shaped accessary, by reducing the number of parts for simplifying the structure, and by facilitating the assembly of parts. SOLUTION: A fastener for a ring-shaped accessary is constituted in such a way that a coil spring 7 is housed inside a detachable push button 6b that is formed in a hollow shape, and when the detachable push button 6b is depressed, the lower end of the locking part 6c of a locking member 6 is abutted on the lower side surface of the case body 4, so that the sliding motion of the locking member 6 is restricted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to fasteners for annular jewelry such as necklaces, bracelets and anklets.

[0002]

BACKGROUND OF THE INVENTION In fasteners such as necklaces, leaf springs or coil springs are generally used as locking means utilizing elastic force. FIG. 14 shows a conventional example of a fastener using a leaf spring. A fastener metal body 41 is connected to one end of a continuous gem string threading a large number of gems via a round ring 43, and a locking tool 42 is connected to the other end of the continuous gemstone via a round ring 43. is there. The fastener 40 is a locking tool 42 formed by bending a metal into a leaf spring shape.
Is press-fitted into the engaging hole 41a formed in the side surface of the hollow fastener main body 41 from the folded back portion, and the necklace is annularly connected. In the notch formed in the engagement hole 41a,
The locking portion 42a of the locking tool 42 is locked by elastic force.

Further, there are the following conventional fasteners using coil springs. 1) In the case of “Actual Kaihei 7-30730” filed by the present applicant, as shown in FIGS. 15 (a), (b), and (c), the locking tool 23 has a locking groove 23a on its peripheral surface. Has been formed. The fastener main body 22 includes a cylindrical receiving member 25 into which the locking tool 23 can be inserted / removed, a locking member 26 that moves in a direction perpendicular to the long axis of the receiving member 25, and a coil spring 27a.
And a spring housing member 27 that houses the coil spring 27a. The locking member 26 is substantially U-shaped as shown in FIG. 15C, and the outer periphery of the receiving member 25 is flat within the thickness range so that the locking member 26 can slide up and down. It is cut into a shape. Further, the receiving member 25 is notched so that the engaging portion 26c, which is the bottom portion of the engaging member 26, can project into the receiving member 25. Locking tool 2
When 3 is not inserted, the locking member 26 is pushed upward by the biasing force of the coil spring 27a, and the locking portion 26c is in contact with the cutout portion of the receiving member 25. When the locking tool 23 is inserted, the locking groove 26a passes through the locking portion 26c of the locking member 26 while pressing against the elastic force of the coil spring 27a on its outer peripheral surface, and the locking groove 23a is locked.
The locking portion 26c is locked in the locking groove 23a by the coil spring 27a at the point of reaching. The engagement / disengagement push button 26b is fixed to the substantially U-shaped plate 26a.

Other examples of the fasteners using the coil springs are as follows. 2) As shown in FIGS. 16 (a) and 16 (b), the fastener main body 31 is provided with a locking pin 35 having an urging force by the coil spring 34, and the fastener 32 is attached to the fastener main body 31.
When it is inserted into the insertion hole 33, the tip of the locking tool 32 comes into contact with the tip 36 of the locking pin 35. Since the tip end portion 36 is formed so as to form an inclination angle with respect to the inserting direction of the locking tool 32, the tip end of the locking tool 32 passes while pushing the tip end portion 36 against the elastic force of the coil spring 34. And locking device 32
At the point where the pin hole 37 bored in the position reaches the locking pin 35, the tip end 36 of the locking pin 35 is fitted into the pin hole 37 by the elastic force of the coil spring 34. Further, when removing the locking tool 32, the knob 38 attached to the other end side of the locking pin 35 is pulled up against the elastic force of the coil spring 34, and the locking tool 32 is pulled out from the fastener main body 31.

[0005]

However, the above-mentioned fastener has the following drawbacks. In the case of a fastener using a leaf spring, since the locking tool 42 is a bent leaf spring, it is crushed as the frequency of use increases, the locking force decreases, and it becomes easy to disengage from the fastener body 41. Occurs. A fastener such as a necklace may be decorated with jewels or the like on its body case, and it is assumed that it will be used for many years for parents and children.

On the other hand, even with a fastener using a coil spring having a small elastic force reduction rate, the conventional structure has the following problems. 1) The applicant of the present invention, when mass-producing fasteners in which the invention has been devised on the basis of "Actual Kaihei 7-30730", found that the following problems occur. The so-called assembling method of accommodating each member in the case body is very difficult. 15 (a), (b), and (c), the case body 24 has a receiving member 25 and a locking member 2
6, the spring accommodating member 27 is incorporated, but the spring accommodating member 27
Since the coil spring 27a is accommodated in the housing, if the receiving member 25 and the spring accommodating member 27 are fixed to each other by brazing or the like, the heat of the coil spring 27a deteriorates and cannot be integrated. Therefore, the assembling is performed while pressing and sandwiching both members with a fingertip or tweezers. Therefore, as shown in FIG. 15D, the shape of the upper surface of the spring accommodating member 27a is a curved surface along the outer periphery of the receiving member 25, and a pair of protrusions for positioning is provided. However, since the size of this protrusion is limited, it easily comes off when being pinched by a fingertip or tweezers, and it is very difficult to fit it into the case body 24. It is easy to be restricted during miniaturization. Since the spring accommodating member 27 is accommodated, the external dimensions of the fastener are increased. Also,
The present applicant tried to manufacture a fastener having a fastener main body size of 10 × 8 × 4 mm, but it was found that the spring accommodating member 27 could not be produced with this size. Since the number of members is large and the number of member processing steps is large, the cost increases. Since the number of members is large, the die manufacturing cost is high, and a die for forming a notch in the case lid is necessary to avoid buffering with the spring accommodating member 27. Further, a processing step of forming a fitting groove in the receiving member 25 in order to correspond to the above-mentioned protruding portion of the spring accommodating member 27 is also required.

2) In the case of the conventional example shown in FIGS. 16 (a) and 16 (b) In this structure, the knob 38 is released when the locking tool 32 is released.
Therefore, the knob 38 must be sized so that it can be sufficiently picked by a finger due to its operability, and the design is restricted. Due to the structure in which the locking portion, the coil spring, and the knob are arranged in series in the spring urging direction, there are restrictions on downsizing of the case and freedom of design.

The present invention was created in order to solve the above problems. It uses a coil spring that can withstand a high frequency of use, can be manufactured inexpensively with a small number of members, and the member can be easily assembled in a small size. An object of the present invention is to provide a fastener for a ring-shaped accessory that can be made into a ring.

[0009]

In order to solve the above problems, the present invention uses the following means in a fastener for an annular accessory. A locking tool having a locking hole or a locking groove formed therein, a receiving member into which the locking tool can be inserted / removed, and an engagement / disengagement engageable with the locking hole or the locking groove formed in the locking tool. A locking member that includes a stopper and that has an engaging / disengaging push button that projects to the outside of the fastener body, and the locking portion of this locking member is elastic in the direction that always locks in the locking hole or the locking groove. In a fastener for an annular accessory such as a necklace or bracelet, which comprises a fastener main body composed of a coil spring biased by force, a receiving member, a locking member, and a main body case for accommodating the coil spring, It is arranged between the receiving member and the engagement / disengagement push button, and the engagement / disengagement push button is formed in a hollow shape to accommodate the coil spring.

Further, when the engagement / disengagement push button is pressed, the locking member abuts either the receiving member, the case, or the projection attached to these, and the locking portion of the locking member is locked. The movement of the locking member in the direction of separating from the hole or the locking groove is restricted so that the locking portion of the locking member does not come off from the receiving member.

Further, when the engagement / disengagement push button is pressed, the hollow peripheral edge portion of the engagement / disengagement push button comes into contact with either the receiving member, the case, or the projection attached to these, and the engagement member is engaged. The movement of the portion in the direction of detaching from the locking hole or the locking groove is restricted so that the locking portion of the locking member does not come off from the receiving member.

Further, when the engagement / disengagement push button is pressed and the coil spring has the minimum length in the elastic force urging direction of the coil spring alone, the locking portion of the locking member has the locking hole or the locking groove. Is restricted from moving away from
The locking portion of the locking member is configured so as not to come off the receiving member.

Further, the case or the receiving member is provided with a movement guide means for guiding and supporting the locking member in the movement direction thereof.

Further, the movement guide means is a convex or concave groove or an attached protruding piece.

Further, the fastener main body is provided symmetrically with respect to the left or right, and the locking tools are provided at both ends of the annular accessory body.

Further, the fastener main body is provided symmetrically in the vertical direction, and the locking tool is provided at one end of each of the two systems of the annular accessory body.

In addition, the fastener main bodies are provided symmetrically in the left-right direction and the vertical symmetry, and the locking tools are provided at both ends of each of the two systems of the annular accessory body.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a fastener according to the present invention will be described with reference to the drawings. "Explanation of a form corresponding to claim 2" Fig. 1 is a front view of a first form of a fastener according to the present invention, and Fig. 2 is a sectional view taken along the line AA in Fig. 1 in a state in which a locking tool is locked. It is a figure. As shown in the figure, the fastener 1 is composed of a fastener body 2 and a fastener 3, and is connected to both ends of a continuous gem string threading a large number of beads.

The engaging member 3 has a round bar shape, and an engaging groove 3a which is engageable with and disengages with an engaging portion 6c of an engaging member 6 which will be described later is formed along the circumference of the engaging member 3. The tip of the locking tool 3 is formed into a spherical shape so that it can be easily inserted into a receiving member 5 described later, and a mounting ring 3b is provided at the other end of the locking tool 3 so as to project from a round shape attached to the end of the continuous beads. It is connected to the ring.

On the other hand, the fastener main body 2 is composed of the following members. Reference numeral 4 is a case main body which is one of the cases for accommodating each member described later, and the inside thereof is formed in a hollow shape. Further, it can be connected to a round ring attached to the end of the continuous bead thread through an attachment ring 4a provided on one side surface of the case body 4. An insertion hole 4b is formed on the other side surface portion of the case body 4 for allowing the locking tool 3 to be inserted and removed, and an engagement push button 6 to be described later is formed on the upper side surface portion.
A notch 4c is formed in conformity with the shape so that b can be inserted. In the case body 4, a receiving member 5 that guides and introduces the locking tool 3 and a locking member 6 that is provided in engagement with the receiving member 5 and engages and disengages with the locking groove 3 a of the locking tool 3.
The coil spring 7 that constantly biases the locking member 6 upward is housed therein.

The receiving member 5 is formed in a cylindrical shape so that the locking member 3 can be inserted and removed, and is accommodated in the case body 4 so as to be connected to the insertion hole 4b of the case body 4. As shown in FIGS. 2 and 3, the receiving member 5 is provided with flat surfaces 5a on both sides of the outer periphery of the receiving member 5 so that the inner side surface of the substantially U-shaped plate 6a of the locking member 6 which moves up and down is guided. A notch 5b is formed below the end of the flat surface 5a so that the engaging portion 6c of the engaging member 6 projects into the receiving member 5.

The locking member 6 comprises a substantially U-shaped plate 6a as an actuating body and an engagement / disengagement push button 6b provided above the case body 4 so as to project from the surface of the case body 4.
The bottom portion on the inner side of a is a locking portion 6c that can be engaged with and disengaged from the locking groove 3a of the locking tool 3. The substantially U-shaped plate 6a and the engagement / disengagement push button 6b are fixed by brazing or the like. Further, the engagement / disengagement push button 6b is formed in a hollow shape so as to accommodate the coil spring 7.

Next, the positional relationship among the case body 4, the receiving member 5, and the locking member 6 is as follows. When the engagement / disengagement push button 6b is pressed and the lower end of the engaging portion 6c of the engaging member 6 contacts the lower surface of the main body case 4, the upper end of the engaging portion 6c is arranged so as not to come off the notch 5b. That is, when the engagement / disengagement push button 6b is pushed all the way, the upper end portion of the locking portion 6c is positioned within the thick portion range of the receiving member 5. (Shown in phantom line in FIG. 2.) As a mode of the structure in which the upper end of the locking portion is located within the thickness range of the receiving member when the locking member comes into contact with the receiving member, a diagram described later will be given. It is realized by the fastener shown in FIG.

Therefore, the locking member 6 is normally pushed up by the elastic force of the coil spring 7, and the locking portion 6c is regulated in a state of being fitted into the notch 5b of the receiving member 5, and is projected into the receiving member 5. is there. Further, when the pushing-down force acts on the locking member 6, it is substantially U against the elastic force of the coil spring 7.
The character plate 6a is lowered, and the locking portion 6c is lowered from the notch 5b of the receiving member 5.

The assembling order of the fastener main body 2 is as follows. (See FIG. 3) The coil spring 7 is inserted into the engagement / disengagement push button 6b of the locking member 6. The coil spring 7 is compressed to receive the locking member 6 and the receiving member 5
Through the side where the flat surface 5a is formed,
Fit to the end of a. When reaching the end of the flat surface 5a, the locking portion 6c of the locking member 6 is fitted into the notch 5b by the elastic force of the coil spring 7 and projects into the receiving member 5. The integrated member is fitted to the case body 4.
Conventionally, the receiving member and the coil housing member were fitted while being pressed and sandwiched with fingertips or tweezers, so it was easy for them to come off from each other and the work was extremely difficult.However, this structure allows easy fitting. And work efficiency is dramatically improved. The inner dimension of the case body 4 in the longitudinal direction is a dimension that allows the receiving member 5 to be properly fitted, and the inner side surfaces of the case body 4 (the surface on which the insertion hole 4b and the mounting ring 4a are formed) are formed. Since the width dimension is such that both cut surfaces of the receiving member 5 are positioned, the receiving member 5 does not swing inside the case body 4. The case lid 8 is fitted to the case body 4. Case lid 8
Is provided with a notch for preventing the engagement / disengagement push button 6b and the receiving member 5 from buffering. As a method of fitting the case body 4 and the case lid 8 to each other, a fitting method in which each of them has been subjected to some uneven dowel processing is used.

The handling of the fastener 1 constructed as above will be described. When attaching the necklace to the neck, the fastener main body 2 and the fastener 3 are brought close to each other, and the tip of the fastener 3 is inserted into the insertion hole 4b of the case body 4. Since the tip of the locking tool 3 has a spherical shape, it can be smoothly introduced. The locking tool 3 passes while pressing the locking portion 6c on the outer peripheral surface thereof, and at the point where the locking groove 3a reaches the locking portion 6c, the locking portion 6c moves to the locking groove 3a by the elastic force of the coil spring 7. It is projected and locked, and the fastener 1 is connected. Further, when removing the necklace from the neck, by pushing the engaging push button 6b protruding on the surface of the fastener body 2 and pulling the locking tool 3 in the direction of pulling out, the substantially U-shaped plate 6a of the locking member 6 is pushed down. Since the locking portion 6c is separated from the locking groove 3a of the locking tool 3, the locking tool 3 is pulled out from the receiving member 5.

[Explanation of the form corresponding to claim 3] Next, the second
The form of will be described. FIG. 4 is a front view showing the fastener main body of the second embodiment. In the first embodiment, the lower end of the locking portion 6c of the locking member 6 contacts the lower side surface of the case, so that the downward sliding stroke of the locking member 6 is restricted. The hollow peripheral portion of the engagement / disengagement push button 6b comes into contact with the stopper piece 9 that is a projecting body so that the downward sliding stroke of the locking member 6 is restricted, and the upper end of the locking portion 6c is controlled. The part does not come off from the notch 5b of the receiving member 5. This stopper piece 9
A mode is adopted in which the locking member 6 is fitted to the receiving member 5 and then fixed by brazing or the like. Further, the stopper piece may be attached to the body case side. Further, instead of attaching the protruding body, the object can also be achieved as a structure in which the case main body or the case lid is subjected to the protruding processing so that the hollow peripheral edge portion of the engaging / disengaging push button 6b abuts on the protruding body.

[Explanation of another form corresponding to claim 3] Next, a third form will be described. FIG. 5 is an explanatory view showing a third embodiment of the fastener, and FIG. 6 is a perspective view of each component. The fastener 1'is similar to the first embodiment in that the fastener body 2'and the locking hole 3c are provided.
And a receiving member 5'for introducing and guiding the locking member 3'in the case body 4 ', and a receiving member 5'engaging with the receiving member 5'. ′ Locking hole 3
A locking member 6'which is engaged with and disengaged from c and a coil spring 7'which constantly presses the locking member 6'upward are housed.

The plate-shaped locking tool 3'is provided near the center of the locking tool 3 '.
An engaging hole 3c which can be engaged and disengaged is formed in an engaging portion 6e of an engaging member 6'which will be described later. Further, the tip of the locking tool 3'is formed with a tapered surface so that the locking part 6e can be pushed down. On the other end side, a mounting ring 3b 'for connecting with a round ring attached to the end of the continuous beads is attached.

On the other hand, the fastener body 2'is made up of the following components. Similar to the first embodiment, the case body 4'has a hollow interior, and has a square insertion hole 4b 'for inserting / removing the locking tool 3'on one side surface. The receiving member 5'is a square-shaped member formed in a hollow shape so that the locking tool 3'can be inserted and removed, and the insertion hole 4b 'of the case body 4'.
It is housed in the case body 4'so as to be connected to. Further, as shown in FIG. 6, notch grooves 5c and 5d for guiding the locking member 6'to a predetermined position are formed on one side surface of the receiving member 5 '. Locking member 6 '
Is composed of a substantially U-shaped plate 6d as an actuating member and an engagement / disengagement push button 6b 'which is provided above the case body 4'and protrudes from the surface of the case body 4'. The engaging portion 6e is engageable with and disengageable from the engaging hole 3c of the tool 3 '. The engagement / disengagement push button 6b 'is formed in a hollow shape so as to accommodate the coil spring 7'.

Here, the case body 4'and the receiving member 5 '.
The method of assembling the locking member 6'and the case lid 8'and their positional relationship are as follows. Engagement push button 6b '
The coil spring 7'is inserted therein and the locking member 6'is fitted along the cutout grooves 5c and 5d of the receiving member 5 '. In this state, the case body 4'is fitted. At this time, an R surface is provided around the bottom of the case body 4'for aesthetic reasons, and this R surface also serves as the positioning of the receiving member 5 '. In FIG. 5, the R surfaces located on the front and back sides toward the paper surface are relatively large so as to fix the receiving member 5'into the space of the case body 4 ', and the right and left R surfaces shown in FIG.
The surface has a small size so as not to buffer when the locking member 6'moves up and down and reaches the lower point. When the locking member 6'moves up and down, its sliding portion is supported by the inner surface of the case body 4'and the surfaces of the cutout grooves 5c and 5d of the receiving member 5 '. Further, since the force constantly pushed up by the coil spring 7'acts on the locking member 6 ', the case lid 8'is fitted to the case body 4'also as a function of restricting the force. That is, a substantially U-shaped plate 6
By contacting the upper side of d with the case lid 8 ', the upward stroke of the locking member 6'is restricted.
Further, the relationship in the height direction between the locking member 6'and the receiving member 5'is that when the engagement push button 6b 'is pressed and the hollow peripheral portion of the engagement push button 6b' is brought into contact with the upper surface of the reception member 5 '. Moreover, the upper end portion of the engaging portion 6e of the substantially U-shaped plate 6d is in a positional relationship such that it does not come off from the lower surface of the receiving member 5 '. This is because the lateral positioning of the locking member 6'in FIG. 5 is determined by being supported by the inner surface of the case body 4'and the surfaces of the cutout grooves 5c and 5d of the receiving member 5'as described above. In order to make the vertical sliding of 6'smooth, and in consideration of errors in the manufacturing and assembling steps, it is designed to have a slight gap,
The tip of the engaging portion 6e of the engaging member 6'may be disengaged from the receiving member 5 ', and the tip of the engaging portion 6e remains on the lower surface of the receiving member 5'even when the pressing of the engagement push button 6b' is released. This is because it is caught and the insertion and removal of the locking tool 3'cannot be carried out smoothly. The fastener 1'configured as described above can also obtain the same effects as the first embodiment.

[Explanation of the form corresponding to claim 4]
The fourth mode will be described. FIG. 7 is an explanatory view showing the fourth mode, and shows a state in which the engagement / disengagement push button 6f is pressed. Each component is similar to the fastener of the first embodiment, but the specifications of the main body case and the coil spring are slightly different. In this embodiment, as shown in the figure, the engagement / disengagement push button 6f
When the coil spring 11 accommodated therein is compressed and the length of the coil spring 11 alone in the elastic force urging direction becomes the minimum, the locking portion 6c is positioned within the thickness range of the receiving member 5. It is configured. That is, the coil spring 1
1 has a structure that restricts the downward movement of the locking portion 6c in FIG.

[Explanation of a form corresponding to claim 6]
The fifth mode will be described. 8A is an explanatory view thereof, and FIG. 8B is a sectional view taken along line BB in FIG. 8A. Each component is similar to the fastener of the first embodiment, but the specifications of the main body case are slightly different. In the figure, the main body case 10 'is formed with two guide grooves 12 for guiding and supporting the locking member 6 in its moving direction, thereby forming a guide groove. According to this embodiment, the protrusion 12 guards the side surface of the locking member 6 and restricts the lateral displacement of the locking member 6, so that the locking portion 6c of the locking member 6 is disengaged from the receiving member 5. Even with the structure, there is an advantage that the locking member 6 slides smoothly. In addition to the processing of the main body case itself as in this example, the projecting body may be brazed to the main body case or the receiving member.

[Explanation of the form corresponding to claim 5]
The sixth mode will be described. In this embodiment, the projecting body in the fifth embodiment is replaced by a case lid which is one of the cases. FIG. 9A is a front view of the case lid. The case lid 13 is provided with a hole 14 on its surface for positioning and locking the ornament, and the case lid 13 has a bent portion 15 which is bent inward at the hole 14 '. Therefore, when the case lid 13 is fitted to the case main body, as shown in FIG.
Regulates the lateral displacement of the locking member 6, so that the locking member 6 slides smoothly even if the locking portion 6c of the locking member 6 is disengaged from the receiving member as in the fifth embodiment. It will be.

[Explanation of a Form Corresponding to Claim 7] Next, another form of the fastener will be described. FIG. 10A is an explanatory view showing a seventh mode of the fastener. This fastener 101 adopts the same mechanism as the fastener main body 2 of the first embodiment, and has two locking members 106 symmetrically configured in the case body 104 as the fastener main body 102. The member 105 was configured as one long member. Locking tools 103 are attached to both ends of the necklace to be locked. That is, the case body 10
4, the insertion holes of the case body communicating with the receiving member 105 are opened at both the left and right ends of 4.

"Explanation of another form corresponding to claim 7" FIG.
(B) is explanatory drawing which shows the 8th form of a fastener. This fastener 101 'is a fastener body 2'of the third form.
By adopting the same mechanism as above, the locking member 106 'is symmetrically arranged in the case body 104' as the fastener body 102 '.
The receiving member 105 'is configured as one long-sized member. Locking tools 103 'are attached to both ends of the necklace to be locked.

[Explanation of another embodiment corresponding to claim 7] FIG.
(C) is an explanatory view showing a ninth mode of the fastener, which is a modified form of the locking member 106 'in the eighth mode, and the locking member 110 is shown in FIG. 10 (d). As shown in FIG. 3, the engaging member has a bifurcated shape so that the left and right engaging members can be engaged and disengaged with one engaging and disengaging push button.

[Explanation of another form corresponding to claim 7] FIG.
[FIG. 11] is an explanatory view showing a tenth form of the fastener. This fastener 201 adopts the same mechanism as the fastener body 2 of the first embodiment, and is used as the fastener body 202 as the case body 2
Two receiving members 205 and two locking members 206 are vertically symmetrically arranged in 04. Locking tools 203 are attached to both ends of the necklace to be locked.

[Explanation of the Form Corresponding to Claim 8] FIG. 12 is an explanatory view showing an eleventh form of the fastener. This dual-use fastener 301 adopts the same mechanism as the fastener main body 2 of the first embodiment, and as the fastener main body 302, two receiving members 305 and locking members 306 are vertically symmetrical in the case body 304. Configured. Then, one side end of each of the two systems (two) of necklaces is attached to the case body 304.
Are connected via a mounting ring, and a locking tool 303 is connected to the other end of each.

[Explanation of the Form Corresponding to Claim 9] FIG. 13 is an explanatory view showing a twelfth form of the fastener. This dual-use fastener 401 adopts the same mechanism as the fastener main body 2 of the first embodiment, and as the fastener main body 402, four locking members 406 are formed symmetrically and vertically symmetrically in the case body 404. I am doing it. Since the receiving member 405 uses a long member, the receiving member 405 is composed of two upper and lower members. A locking tool 403 is connected to both ends of each of the two systems of necklaces.

[0041]

Since the fastener according to the present invention is constructed as described above, it has the following effects. 1) Assembly work efficiency of the fastener main body is improved. Since the assembling method is that the respective members are previously integrally connected and fitted into the case main body, quick assembly work is possible. 2) The number of parts is small. Since the engagement / disengagement push button also serves to house the coil spring, a dedicated member for housing the coil spring is unnecessary. 3) Miniaturization is possible. The coil spring accommodating member is abolished,
By accommodating the coil spring in the engagement / disengagement push button, the size of the fastener main body can be reduced. 4) By eliminating the coil spring accommodating member, the case itself can be made thinner, so that the degree of freedom (variation) in ornaments attached to the case surface or the case surface design is expanded. 5) The number of processing steps for the member is reduced. By eliminating the coil spring accommodating member, the step of forming a notch for positioning in the receiving member is unnecessary, the die is not required, and the step of forming a notch for positioning the spring accommodating member in the case lid is also eliminated. , The die for the notch is also unnecessary. 6) When the locking member or the locking push button comes into contact with the receiving member, the projecting member attached to the receiving member, or the case body, the sliding stroke thereof is restricted, and the locking portion of the locking member is disengaged from the receiving member. With the structure that prevents this, it is possible to attach and detach the locking device smoothly without getting caught. 7) Even if the fastener main body is made vertically symmetrical or left-right symmetrical, it does not have to be large, and various fasteners and necklaces can be prepared by providing fasteners on both terminals. You can enjoy great coordination.

[Brief description of the drawings]

FIG. 1 is a front view of a first mode of a fastener according to the present invention.

FIG. 2 is a view of A- in FIG. 1 in a state where a locking tool is locked.
It is A sectional drawing.

FIG. 3 is a perspective view of the constituent members of the first mode of the fastener according to the present invention.

FIG. 4 is a front view of a second mode of the fastener according to the present invention.

FIG. 5 is an explanatory view of a third mode of the fastener according to the present invention.

FIG. 6 is a perspective view of a constituent member of a third embodiment of the fastener according to the present invention.

FIG. 7 is an explanatory view of a fourth mode of the fastener according to the present invention.

FIG. 8 (a) is an explanatory view of a fifth mode of the fastener according to the present invention. FIG. 8B is a sectional view taken along line BB in FIG.

FIG. 9 (a) is an explanatory view of a sixth mode of the fastener according to the present invention. 9B is a cross-sectional view taken along the line CC of FIG. 9A.

FIG. 10 (a) is an explanatory view of a seventh mode of the fastener according to the present invention. FIG.10 (b) is explanatory drawing of the 8th form of the fastener which concerns on this invention. FIG. 10 (c)
FIG. 13 is an explanatory view of a ninth mode of the fastener according to the present invention. FIG.10 (d) is a perspective view of the locking member in the 9th form of the fastener which concerns on this invention.

FIG. 11 is an explanatory view of a tenth mode of the fastener according to the present invention.

FIG. 12 is an explanatory view of an eleventh form of the fastener according to the present invention.

FIG. 13 is an explanatory diagram of a twelfth form of the fastener according to the present invention.

FIG. 14 is an explanatory diagram showing a conventional example of a fastener using a leaf spring.

FIG. 15 is an explanatory view showing a conventional example of a fastener using a coil spring.

FIG. 16 is an explanatory view showing another conventional example of a fastener using a coil spring.

[Explanation of symbols]

 1, 1 ': Fastener 2, 2': Fastener body 3, 3 ': Locking tool 3a: Locking groove 3b, 3b': Mounting ring 3c: Locking hole 4, 4 ': Case body 4a, 4a ′: Mounting ring 4b, 4b ′: Insert hole 4c: Notch 5, 5 ′: Receiving member 5a: Flat surface 5b: Notch 5c, 5d: Notch groove 6, 6 ′: Locking member 6a: Substantially U-shaped plate 6b, 6b ': Engagement push button 6c: Engagement part 6d: Substantially U-shaped plate 6e: Engagement part 6f: Engagement release button 7, 7', 11: Coil spring 8, 8 ': Case lid 9: Stopper piece 10, 10 ′: Main body case 12: Protruding body 13: Case lid 14: Hole 15: Bent portion 101, 101 ′: Fasteners 102, 102 ′: Fastener body 103, 103 ′: Locking tool 104, 104 ′: Case body 105, 105 ': Receiving member 106, 106': Locking part 110: Locking member 201, 301, 401: Fastener 202, 302, 402: Fastener main body 203, 303, 403: Fastener 204, 304, 404: Case main body 205, 305, 405: Receiving member 206, 306 , 406: Locking member

Claims (9)

[Claims] 1. A locking tool having a locking hole or locking groove formed therein, a receiving member into which the locking tool can be inserted and removed, and a locking hole or locking groove formed in the locking tool. An engaging member having an engaging / disengaging engaging portion and an engaging / disengaging push button protruding to the outside of the fastener main body, and the engaging portion of the engaging member is always engaged with the engaging hole or the engaging groove. A coil spring biased by elastic force in a stopping direction, a receiving member, a locking member, a case for accommodating the coil spring, a necklace consisting of a fastener main body composed of, a fastener for a ring-shaped accessory such as a bracelet, The metal fitting for an annular accessory according to claim 1, wherein the coil spring is disposed between the receiving member and the engagement / disengagement push button, and the engagement / disengagement push button is formed in a hollow shape to accommodate the coil spring. 2. When the engagement / disengagement push button is pressed, the locking member comes into contact with either the receiving member, the case, or a projection attached to these, and the locking portion of the locking member has a locking hole. Alternatively, the annular accessory according to claim 1, wherein movement of the locking member is restricted so that the locking portion of the locking member does not come off the receiving member. Fasteners. 3. When the engagement / disengagement push button is pressed, the hollow peripheral portion of the engagement / disengagement push button comes into contact with either the receiving member, the case, or the projection attached to these, and the engagement member is engaged. 2. The movement of the part in a direction of separating from the locking hole or the locking groove is restricted, and the locking part of the locking member is configured so as not to come off the receiving member.
The fastener for the annular accessory described in. 4. The engaging portion of the engaging member has an engaging hole or an engaging groove when the engagement push-release button is pressed and the coil spring has a minimum length in the elastic force urging direction when the coil spring is a single body. The fastener for an annular accessory according to claim 1, wherein movement of the locking member is restricted so that the locking portion of the locking member does not come off the receiving member. 5. The fastener for an annular accessory according to claim 1, wherein the case or the receiving member is formed with a movement guide means for guiding and supporting the locking member in the movement direction thereof. 6. The fastener for an annular accessory according to claim 5, wherein the movement guide means is a convex or concave groove or an attached protruding piece. 7. The fastening of the annular accessory according to claim 1, wherein the fastener main body is provided symmetrically with respect to the left or right, and the locking tools are provided at both ends of the annular accessory body. Metal fittings. 8. The fastener body is vertically symmetrically provided, and the locking tool is provided at one end of each of two systems of annular accessory bodies.
The fastener for the annular accessory described in. 9. The fastener according to claim 1, wherein the fastener main body is provided symmetrically with respect to the left and right, and the retainers are provided at both ends of each of the two systems of the annular accessory body. A fastener for annular jewelry.