JP3026710U - Hinge - Google Patents

Abstract

(57) [Abstract] [Problem] A cotter pin used to attach a tilt plate to a truck bed, etc. has a difficulty. (EN) Provided is a hinge that solves problems such as falling off of blades and fatigue breakage of blades. SOLUTION: In each of the two blade plates 1 and 2 having concave and convex edges that mesh with each other, a connecting pin 3 is inserted into each bearing part b formed by rounding each protruding part a. In the connecting pin 3, one end is integrally provided with a retaining head 3a, the other end is provided with an engaging concave portion 3b, and an engaging protrusion 4a is provided for engaging with the engaging concave portion. The cap-shaped head 4 is attached to the other end of the connecting pin in a retaining state by a driving means or the like. In addition, a reinforcing embossed portion 5 is provided at the root of the protruding portion a of the uneven edge portion of the blade plate 1.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a hinge suitable for use, for example, in attaching a tilt plate to a truck carrier.

[0002]

[Prior art]

 5 and 6 show a typical conventional hinge for mounting the tilt plate on the truck bed. This hinge 50 has a connecting pin 53 at each bearing portion b formed by rounding each protruding portion a of two blade plates 51 and 52 having concave and convex opposing edges that mesh with each other. It has a configuration in which In order to prevent the connecting pin 53 from coming off, a head portion 53a is provided at one end side thereof, and a pin hole 53b through which the split pin 54 is passed is provided at the other end thereof.

[0003]

[Problems to be solved by the device]

 The conventional hinge 50 has the following drawbacks. (A) The tip of the bent leg of the split pin 54 has a high possibility of catching the hand or clothes of the cargo worker, which is dangerous. (B) It is not uncommon for the split pin 54 to corrode over time and the connecting pin 53 to fall off. (C) The root portion of the projecting portion a of the blade plate 51, on which the dynamic load accompanying the opening and closing of the tilt plate is concentrated, is easily broken by fatigue.

[0004]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to provide a hinge which is used for attaching a tilt plate to a truck bed, etc. and which has substantially eliminated the above-mentioned considerable defects.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the hinge according to the present invention is a bearing part b formed by rounding each protruding part a of two vane plates 1 and 2 having concave and convex edges that mesh with each other. In which the connecting pin 3 is inserted, a retaining head 3a is integrally provided at one end of the connecting pin 3, and an engaging recess 3b is provided at the outer peripheral surface of the other end. The cap-shaped head 4 provided with the engaging projection 4a to be engaged with the recess 3b is fitted to the other end in a retaining state by a driving means or the like. Then, a reinforcing embossed portion 5 may be provided at the root of the protruding portion a of the vane plate 1.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

 An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In the hinge A of this embodiment, as shown in FIG. 1, two blades 1 and 2 having concave and convex edges that mesh with each other and both blades 1 and 2 are rotatably connected to each other. It is provided with a structure in which four parts, that is, a connecting pin 3 to be connected and a cap-shaped head 4 to be fitted to one end of the connecting pin 3 are combined.

As shown in FIGS. 1 and 4, one of the vane plates 1 of this embodiment is made of a substantially convex metal plate, and a protruding portion a thereof is rounded into a cylindrical shape and a connecting pin 3 is passed therethrough. The bearing portion b is formed. Further, an embossed portion 5 is formed by a pressing means at the root of the protruding portion a. The embossed portion 5 of this embodiment has a trapezoidal shape having a rectangular shape in a plan view, and its width in the longitudinal direction is made slightly narrower than the lateral width of the protruding portion a.

The other vane plate 2 is made of a metal plate having a substantially concave shape, and the protruding portions a, a on both sides of the concave and convex edges are each rounded into a cylindrical shape and a bearing portion b through which the connecting pin 3 is inserted. , B are formed. c is a bolt hole for attaching the hinge.

As shown in FIGS. 2 and 3, the connecting pin 3 is integrally provided at one end thereof with a head portion 3a having a flange for preventing slippage, and at the other end thereof, engaging with two locations on the outer peripheral surface. The recessed portions 3b, 3b are provided so as to face each other. The engagement recess 3b of this embodiment has a notched groove shape.

As shown in FIGS. 2 and 3, the cap-shaped head 4 is formed in a cap shape that can be fitted to the other end of the connecting pin 3, and a flange 4 a is formed on the outer periphery of the rim. ing. On the peripheral wall portion of the cap-shaped head portion 4, in the above-mentioned fitted state, the engaging projections 4 to be fitted into the engaging concave portions 3b at the respective positions facing the engaging concave portions 3b, 3b of the connecting pin 3. The a and 4a are formed by pressing means so as to project toward the inside of the cap.

To assemble the hinge A, both blade plates 1 and 2 are engaged with each other so that the bearing portions b are aligned, and the connecting pin 3 is inserted from one end thereof. Then, when the cap-shaped head 4 applied to the insertion protruding end of the connecting pin 3 is hit with a hammer or the like, the cap-shaped head 4 having elastic deformability becomes, as shown in FIG. The assembly is completed in a quick and reliable manner.

In the assembled hinge A, both ends of the connecting pin 3 have a substantially hemispherical shape that is smooth. Therefore, when it is used for attaching the tilt plate, the disadvantage of the conventional hinge 50 is that the sharp leg end of the split pin 54 may damage the skin of the cargo worker or get caught on clothes. Completely resolved.

Further, a large bending action force is exerted on the root portion of each protruding portion a where the blade plates 1 and 2 are connected to the connecting pin 3 each time the tilt plate is opened and closed. In particular, since the blade plate 1 is connected to the connecting pin 3 only at one projecting portion a, a strong concentrated stress is applied to the root portion thereof.

However, since the embossed portion 5 that reinforces this portion is provided at this root portion, unlike the conventional one that lacks such reinforcing means, the risk of breakage due to stress fatigue is substantially eliminated. .

If it becomes necessary to remove the connecting pin 3 from the hinge A, the tip of the driver or the like is inserted into the gap between the cap-shaped head 4 and the side end surface of the blade plate 2. Then, the cap-shaped head 4 can be removed.

In the above structure, the object of the present invention can be achieved even if the design of the detailed structure is changed appropriately. For example, the shape of the embossed portion 5 is not limited to that shown in the figure, and may be a plurality of rows of ridges or the like that extend at arbitrary intervals in the crossing direction with respect to the connecting pin 3.

[0017]

[Effect of device]

 As will be apparent from the above description, the hinge according to the present invention can be used, for example, to attach a tilt plate to a truck bed, as compared with a conventional one in which a connecting pin is prevented by a split pin. It has excellent practical effects as listed below. (A) Since both ends of the connecting pin are provided with smooth cap nut-shaped heads, the difficulty of the conventional hinge, that is, the possibility of the leg part of the split pin being caught on clothes or skin is completely eliminated. (B) Also, unlike the conventional case, there is no possibility that the split pin will corrode over time and the connecting pin will drop off without realizing. (C) Furthermore, by providing the embossed portion at the root of the protruding portion of the uneven edge portion of the blade, the stress rupture resistance is remarkably enhanced, and the durability of the hinge is significantly improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a hinge according to an embodiment of the present invention.

FIG. 2 is a side view of the connecting pin and the cap-shaped head of the same.

FIG. 3 is a vertical cross-sectional view showing a state in which a cap-shaped head is fitted on the connecting pin.

FIG. 4 is a vertical sectional view taken along line XX of FIG.

FIG. 5 shows a conventional example and is a perspective view of a hinge.

FIG. 6 is a partially cutaway side view of the same as the above.

[Explanation of symbols]

 A Hinge 1, 2 Blade plate 3 Connection pin 3a Head 3b Engagement recess 4 Cap-shaped head 4a Flange 4b Engagement projection 5 Embossing part a Projection part b Bearing part c Bolt hole 50 Hinges 51, 52 Blade plate 53 Connection Pin 54 Split pin

Claims (2)

[Scope of utility model registration request] 1. A bearing pin b formed by rounding each projecting portion a of two vane plates 1 and 2 having concave and convex edges that mesh with each other, in which a connecting pin 3 is inserted. In the connection pin 3, one end of the connecting pin 3 is integrally provided with a retaining head 3a, and the other end of the connecting pin 3 is provided with an engaging recess 3b. The engaging protrusion 4b engages with the engaging recess 3b. A hinge characterized in that the cap-shaped head 4 provided with is attached to the other end of the connecting pin 3 in a retaining state by a driving means or the like. 2. The reinforcing embossed portion 5 is provided at the base of the protruding portion a of the vane plate 1.
The hinge shown.