JPH07313795A - Assembly type clamping mean - Google Patents

Abstract

PURPOSE:To reduce the production cost of a clamping means without degrading mass productivity thereof. CONSTITUTION:A main body 11 constituting respective clamping pieces 10 is juxtaposed with openings 12, 13 to be fitted with pivotal supporting pieces 17, 19 on the right and left in order to povitally support a pair of the clamping pieces 10 openably and closably. The one pivotal supporting piece 17 is provided with a bearing part 16 into which a shaft-like member is insertable. The other one pivotal supporting piece 19 is provided with a bearing part 18 turnable in sliding contact with this bearing part 16. The pivotal supporting pieces 17, 19 are mounted at the main body 11 to form the clamping piece 10 in such a manner that the bearing part 16 and the bearing part 18 project to the inside surface side. Two pieces of such clamping pieces 10 are combined and a nearly U-shaped spring 14 is interposed between both clamping pieces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a composite having a structure in which a pair of holding pieces are rotatably supported for holding an object, and a spring for urging a tip portion in a closing direction is interposed between the holding pieces. The present invention relates to a resin holding tool.

[0002]

2. Description of the Related Art For example, most of today's holding tools called clothespins, clothespins or simply pinches are made of synthetic resin. Improvements have been made to facilitate manufacturing. The applicant of the present application also developed a combination of two substantially identical holding pieces, such as a pinch shown in Japanese Utility Model Publication No. 3-10949. Although it is not easily twisted and has stable operability, it is necessary to project the shaft support portion inwardly from one of the holding pieces in order to connect the two holding pieces in an openable and closable manner.

The structure of a mold for molding a holding piece integrally having such a shaft support part is unexpectedly complicated because it is necessary to move and mold each part without molding with a mere unevenness. Becomes As a result, the die cost rises, a molding failure is likely to occur, and it is not suitable for multi-cavity production, resulting in a decrease in mass productivity. For this reason, the applicant has developed and has already applied for an assembled holding device that does not cause these problems.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in the course of the above-mentioned development, and its object is to mold with high efficiency by a mold that can be manufactured at low cost and to have good operability. It is an object of the present invention to make a tool easily and inexpensively by a configuration different from the above invention.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a main body 11 serving as a holding piece is formed in a flat shape, and two pieces penetrating from the outer surface of the main body to the inner surface are provided at positions for pivotal support. Openings 12 and 13 of the spring are arranged side by side, the spring 14 is formed in a substantially U shape, and a locking portion 15 for locking the free end thereof is provided between the openings 12 and 13, and the shaft-shaped member Shaft support piece 17 having bearing portion 16 into which X can be inserted
And a shaft support piece 19 having a bearing portion 18 rotatably contacting it are fitted into the openings 12 and 13, respectively.
By projecting 6 and 18 to the inner surface of the main body, the holding piece 10 is assembled, and the two holding pieces 10 can be combined so that the bearing portions 16 and 18 face each other to open and close the pair of holding pieces 10 and 10. It is a means of pivotal support.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example in which the assembling type holding device according to the present invention is applied to clothespins. Each of the pair of holding pieces is indicated by reference numeral 10, and each holding piece 10 has the same shape,
It is assembled so that it has a structure, and is joined by a posterior shaft support.

The main body 11 serving as a holding piece has a cylindrical outer surface, but is formed in a flat shape which can be said to be substantially plate-like. This is because by suppressing the thickness to a small size, it is possible to reduce the size of the mold and reduce the cost. The main body 11 is provided with ribs 22 provided in the vertical and horizontal directions on the inner surface side for reinforcement, and they are also connected to a rising edge 23 provided along the outer shape. Reference numeral 24 denotes a slip stopper, and 25 denotes a recess provided inside the tip holding portion for accommodating the slip stopper 24. The slip stopper 24 may have a structure integrally formed with the main body 11.

Two openings 12 and 13 on the left and right are formed at positions for supporting the shaft of the main body 11 by penetrating the main body 11 from the outer surface to the inner surface. The mold for molding the main body 11 having the openings 12 and 13 having such a shape and structure is not only downsized, but also the structure of the mold surface and the movement of the mold are simple.
Moreover, since a mold slide mechanism or the like is not required, the number of molds that can be molded by one mold is increased and mass productivity is improved. The openings 12 and 13 are the shaft support pieces 17 fitted therein,
Set the shape and size to match the shape of 19.

The above-mentioned one shaft support piece 17 is a member for providing the substantially C-shaped (discontinuous circular) bearing portion 16 capable of holding the circular shaft-shaped member X at a fixed position on the inner surface side of the main body 11,
The other one of the shaft support pieces 19 is a member for providing the arc-shaped bearing portion 18 at a fixed position in order to close the opening portion (open circle portion) of the C-shaped bearing portion 16. Both of the shaft support pieces 17 and 19 have a locking portion 26 that is substantially parallel to the main body 11 and an outer shape (planar shape) in which a protrusion 27 that is substantially orthogonal thereto is combined in a T-shape. The outer surface of the main body is flattened by fitting in the openings 12 and 13. The sliding surfaces of both bearings 16 and 18 are provided with a retaining member composed of a convex portion 29a and a concave portion 29b that can be engaged with each other, and they will come off when the tab portions of the respective holding pieces 10 and 10 are expanded. A configuration can be added to prevent this (FIG. 2).

Reference numeral 28 is a locking projection, which is provided above and below the projecting portion 27 so as to be locked to the inner ends of the openings 12 and 13. Since the mold for molding the shaft support pieces 17 and 19 is small in size and has a relatively simple structure, the molding mold for the component for the holding tool according to the present invention is compared with that of the conventional integral pinch. And the cost is significantly reduced. The main body 11 and the shaft support pieces 17, 19 and the like need not be formed of the same material. For example, the main body 11 mainly requires strength, and the shaft support piece 17,
19 is required to be resistant to wear and slippery. Also, by changing the coloring, it is possible to give a novel shape and color.

The main body 11 as described above is connected by a spring that applies a holding force to the holding tool. The spring 14 is in the shape of a leaf spring having a substantially U shape, and a locking portion 15 for locking the free end thereof is provided on the inner surface side of the main body between the openings 12 and 13. The engaging portion 15 is located on the ridges 22 and 22 parallel to the rising edge 23 and protrudes toward the shaft supporting portion. In order to position the mold for molding the protruding portion 15 from the outer surface to the inner surface of the main body, the die removing port 21 has openings 12, 13
Molded in between.

In the holding tool 30 according to the present invention, first, one shaft support piece 17 having a bearing portion 16 is fitted into one opening 12 of the main body 11, and the bearing portion 18 is inserted in the other one opening 13.
The shaft support piece 19 having the above is fitted and the holding piece 10 in which they are integrated is assembled (state of the upper half portion of FIG. 5).
The holding pieces 10 assembled in this way all have the same shape and structure, and by using two of them, the other bearing portion 18 is made to face each other so as to close the opening portion (open circle portion) of the bearing portion 16. A pair of holding pieces 10 and 10 are pivotally supported so that they can be opened and closed (FIG. 3). And the illustrated one is a U-shaped spring 1
The free end of No. 4 is fitted into the engaging portions 15, 15 of the two holding pieces 10, 10 and the ends are closed, whereby the assembly as a holding tool is completed. The spring 14 is preferably made of metal, but can also be made of resin.

A shaft-shaped member X can be passed through the shaft support of the assembled holding tool according to the present invention (FIGS. 4 and 6). Such a shaft-shaped member X is, for example, a clothesline frame. In that case, the arcuate recess 31 formed in the rising edge 23 of the main body 11 and the similar arcuate recess 32 formed in the protrusion 22 can contact the shaft-shaped member X.

[0014]

Since the assembling type holding tool of the present invention is constructed and operates as described above, the main body 11 and the shaft support pieces 17, 19 constituting the holding tool are formed by a small and relatively simple mold. The work of assembling the holding pieces 10 which can be molded and then the two holding pieces 1
Since it is also very easy to use 0 and 10 as the holding tool by using the spring 14, the mass productivity of the assembly-type holding tool can be improved, and the production cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of an assembling type holding tool according to the present invention.

FIG. 2 is an explanatory view showing an engagement relationship of bearing portions.

FIG. 3 is a vertical cross-sectional view showing a state in which a pair of holding pieces constituting the holding tool are combined.

FIG. 4 is a vertical cross-sectional view of the assembled holding tool.

FIG. 5 is a cross-sectional view in the middle of assembling a pair of holding pieces.

FIG. 6 is a cross-sectional view showing a state where a rod-shaped member is inserted into the completed holding tool.

Claims (4)

[Claims] 1. A holding tool made of synthetic resin having a structure in which a pair of holding pieces are rotatably supported for holding an object, and a spring for urging a tip portion in a closing direction is interposed between the holding pieces. The main body 11 serving as a holding piece is formed in a flat shape, and two openings 12 and 13 penetrating from the outer surface to the inner surface of the main body are provided side by side at the position for the pivotal support. Reference numeral 14 denotes a shaft supporting piece 17 which is formed in a substantially U shape, has a locking portion 15 for locking the free end thereof, which is provided between the openings 12 and 13, and has a bearing portion 16 into which the shaft-shaped member X can be inserted. When,
A shaft support piece 19 having a bearing portion 18 rotatably contacting it
Are fitted into the openings 12 and 13, and the bearings 16 and
By holding 18 toward the inner surface of the main body, the holding piece 10
Assemble the two holding pieces 10 and the respective bearing parts 1
6 and 18 are combined so that they face each other, and a pair of holding pieces 1
An assembling type holding tool having a structure in which 0 and 10 are pivotally supported so as to be openable and closable. 2. The locking portion 15 projects to the inner surface side of the main body 11, and the die removal port 21 is opened in order to position the mold for forming the locking portion 15 from the outer surface to the inner surface of the main body.
The assembly-type holding device according to claim 1, which is provided between 2 and 13. 3. One shaft support piece 17 has a substantially C-shaped bearing portion 16 capable of holding the shaft-shaped member X, and the other one shaft support piece 19 has an opening of the C-shaped bearing portion 16. The assembly type holding tool according to claim 1, further comprising an arc-shaped bearing portion (18) that closes the portion. 4. The convex portion 29 is formed on the sliding surface of one bearing portion 16.
The assembly type holding device according to claim 1, wherein a concave portion 29b engageable with the convex portion 29a is provided on the sliding surface of the other one of the bearings 18a and 18a, and the engagement of the concave portions 29b serves as a stopper. Ingredient