JPH0136416Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The opening frame according to the invention is applicable to purses, handbags, document cases, etc.

[Conventional technology]

The conventional mouth frame has a U-shape in cross section, and in order to maintain the closed state, a locking member consisting of a pair of two pieces, a fastener, or a pair of two pieces are attached. A set of elastic plates was provided.

[Problem that the invention attempts to solve]

Conventional mouth frames with a U-shaped cross section are inevitably thick, and in the case of a type in which a pair of locking members is attached to the mouth frame, the locking members do not protrude upward. This is undesirable because the bag becomes thin, making it difficult to make the entire bag thin.

In addition, in products equipped with fasteners, the engagement between the locking piece and the slider often malfunctions, and therefore, in products that require frequent opening and closing, there is a problem in terms of service life. It was something that was given to me.

Furthermore, in the case of a set of two elastic plates, the closed state can be achieved automatically, but in order to maintain the open state, the elastic plates must be bent by the fingertips. This made it extremely inconvenient to take in and take out coins, etc.

[Means and actions for solving problems]

The present invention consists of two plates: a mouth plate 1 which has the function of attaching the upper edge of the bag, and elastic plates A and B, each consisting of one side leg plate 2 and the other side leg plate 3, and the base of the one side leg plate 2. In addition, a narrow plate portion 21a having an upward tip portion 21a ₁ that is bent upward toward the back side is formed, and protruding shafts 21a ₂ are formed on the left and right sides of the base of the upward tip portion 21a ₁ to form a hinge portion A2. constitutes B2,
A hinge section is formed at the base of the other side leg plate 3 by a central control plate section 31a that is slightly inclined toward the front surface, and left and right locking plate sections _32a each having a bearing plate 32a1 whose tip end is bent toward the back surface. A3 and B3 are configured such that the bearing plate 32a ₁ of the elastic plate B supports the protruding shaft 21a ₂ of the elastic plate A, and the upward tip portion 21a 1 of the elastic plate A is supported on the control plate portion 31a of the elastic plate _B. The opening dead center function and the closing dead point function as the mouth frame are brought into contact with each other so as to be able to be maintained, and the hinge parts A2 and B3 and A3 and B2 are formed, and the mouth plates of the two elastic plates are opened to a desired angle. In this state, the upward tip of the narrow plate comes into contact against the elasticity of the control plate, thereby pressing the control plate toward the surface of the elastic plate, and the pressing force and the pressure of the control plate are The elastic restoration is balanced and the opening dead center is reached, and by slightly pressing the mouth plates together in the closing direction, this is automatically closed and the control plate returns to its original shape to reach the closing dead center. be.

〔Example〕

Fig. 1 is a plan view of the mouth frame according to the present invention when viewed flatly open, Fig. 2 is a back view of the same as above, Fig. 3 is an enlarged side view when the mouth is opened, Figs. 4a and 4a. FIG. 4b is a plan view with the hinge section separated, FIGS. 5a and 5b are side views of the same, and FIG. 6 is a perspective view of the bag.

A and B indicate elastic plates having a thickness of about 1 mm, which are made of, for example, an iron plate, punched out as described later, then bent and formed, and then bent to impart elasticity.

The elastic plates A and B are each formed by a mouth plate 1, and a leg plate 2 on one side and a leg plate 3 on the other side extending perpendicularly to both ends of the mouth plate 1.

A slit 12 is provided in the mouth edge 11 of the mouth plate 1 in the length direction, and the slit 12 in this embodiment
Two strips are provided, leaving the center portion 13, so that deformation of the mouth plate 1 is prevented. Furthermore, the edge portion 11 is slightly curved toward the surface from the location where the slit 12 is located.

Irregularly shaped hinge parts A2 and A3 and B2 and B3 are formed at the bases of the one side leg plate 2 and the other side leg plate 3 of the elastic plates A and B, respectively, and the hinge parts A2 and B
3.A3 and B2 are combined to form a hinge. More specifically, one side leg plate 2 of elastic plate A, the other side leg plate 3 of elastic plate B, and the other side leg plate 3 of elastic plate A and one side leg plate 2 of elastic plate B are shown in FIGS. They are facing each other.

That is, the hinge portions A2 and B2 of the one side leg plate 2 of the elastic plate A and the one side leg plate 2 of the elastic plate B are upwardly bent tip portions 21a bent upward toward the back side, as shown in FIGS. 4a and 5a. ₁ is formed, and protruding shafts 21a ₂ are formed on the left and right sides of the base of the upward tip portion 21a ₁ . Also elastic plate A
The other leg plate 3 of the elastic plate B is formed of a central control plate portion 31a that is slightly inclined toward the front surface, and left and right locking plate portions _{32a having bearing plate portions 32a1} whose tips are bent toward the back surface. has been done.

In addition, the elastic plates A and B are made by punching out iron plates with a thickness of about 1 mm using a cutting die as described above to obtain the original shapes of the mouth plate 1, one side leg plate 2, other side leg plate 3, and hinge parts A2, A3, B2, and B3. After that, each part is bent and formed, and then bent.

Note that the hinge parts A2 and B3 and A3 and B2 between the elastic plates A and B are of course of irregular shapes, but in Fig. 1, either the elastic plates A or B can be rotated 180 degrees in the vertical direction. As you can see by moving and comparing them, both are made to have a completely uniform shape.

In the shape shown in the flattened back view as shown in FIG. 2, the protruding shaft 21a ₂ of the elastic plate A is supported on the bearing plate 32a ₁ of the elastic plate B, and the control plate portion of the elastic plate B 31a, the narrow plate portion 21 of the elastic plate A
a is polymerized to form a hinge.

In addition, in Fig. 3 and Fig. 6, C stands for leather;
A bag made of cloth, plastic, etc. is shown, and the upper edge C1 of the bag C is inserted into slits 12 of elastic plates A and B and fixed by a desired means.

In the configuration described above, the openings of the elastic plates A and B are opened and closed via the hinge formed by the hinge parts A2, B3, and B2 as shown in FIG.
As shown in the figure, when the mouth plates 1 and 1 of the elastic plates A and B are opened at a desired angle, the upward tip portion 21a ₁ of the narrow plate portion 21a is pushed against the elasticity of the control plate portion 31a. This presses the control plate portion 31a toward the surface of the elastic plate B, and the pressing force and the control plate portion 31a
The elastic restoring force of the control plate part 31a balances out the opening dead center, and the mouth plates 1 and 1 of the elastic plates A and B are slightly pressed in the direction of the arrow. 1 and 1 are automatically closed, and the control plate portion 31a returns to its original shape to become the closed dead center.

In addition, in FIG. 6, C2 indicates a puller for opening and closing the opening, which is attached near the upper edge C1 on both outer sides of the bag C.

[Effect of idea]

Since the present invention is configured as described above, it can produce the following effects.

(i) By making the elastic plates A and B uniformly shaped and hingeable, a single cutting die is sufficient, and the mouth plate 1
1. Uniform bending tools for the hinge parts A2 and B2 and A3 and B3 are sufficient, and therefore the cost can be extremely low.

(ii) Since the elastic plates A and B serving as the mouth frame are made of a single plate, the structure is much improved compared to the conventional one which consists of a top plate, a back plate, and a connecting plate that connects these two plates. It is lightweight and thin, so it is easy to store,
It can be obtained at a low cost because it facilitates transportation and reduces the cost of materials used.

(iii) Since the mouth plate 11, one side leg plate 2, and the other side leg plate 3 can be made thin, the device has a good appearance and is not bulky when carried.

[Brief explanation of drawings]

Figure 1 is a plan view when opened flat, Figure 2
The figure is a back view of the same as above, Fig. 3 is an enlarged side view when the mouth is opened, Figs. 4a and 4b are plan views with the hinge section separated, and Figs. 5a and 5b are side views of the same as above. , FIG. 6 is a perspective view of the bag. A, B...Elastic plate, A2, A3, B2, B3...
...Hinge part, 1... Mouth plate, 11... Mouth edge, 1
2...Slit, 2...One side leg plate, 3...Other side leg plate, 21a...Narrow plate part, _21a1 ...Upward tip, _21a2 ...Protruded shaft, 31a...Control plate part, 32
a... Locking plate portion, 32a ₁ ... Bearing plate.

Claims (1)

[Scope of claims for utility model registration] (1) Mouth plate 1 having the function of attaching the upper edge of the bag
It is made up of two elastic plates A and B consisting of one side leg plate 2 and the other side leg plate 3, and has an upward tip 21a ₁ at the base of the one side leg plate 2 that bends upward toward the back surface. In addition to forming the narrow plate part 21a, protruding shafts _21a2 are formed on the left and right sides of the base of the upward tip part _21a1 to constitute the hinge parts A2 and B2, and the base of the other side leg plate 3 is slightly bent in the surface direction. The hinge portion A3 is formed by a central control plate portion 31a that is inclined toward the rear side, and left and right locking plate portions 32a having bearing plates _32a1 whose tips are bent toward the back side.
and B3, and on the bearing plate 32a ₁ of the elastic plate B,
The protruding shaft 21a ₂ of the elastic plate A is supported, and the upward tip 21a ₁ of the elastic plate A is held on the control plate 31a of the elastic plate B to maintain the opening dead center function and the closing dead center function as a mouth frame. Hinge part A2 can be brought into contact with each other.
and B3, and A3 and B2. (2) In the length direction of the mouth edge 11 of the mouth plate 1,
The opening frame for a bag according to claim 1, which is provided with a slit 12 for attaching the upper edge of the bag.