JPH082581Y2 - Weighing plate mounting structure of weighing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a weighing plate mounting structure for a weighing machine such as a kitchen scale or a weight scale.

(Prior Art) In a weighing machine using a load cell, it is necessary to attach a weighing plate on which the object to be weighed is placed on the free end of the load cell to secure a large placement surface. In this case, it is general that a metal supporting plate is attached to the load cell and the weighing plate is mounted on the supporting plate so that a load such as bending does not act directly on the weighing plate.

This weighing plate needs to be firmly attached so as not to come off or come off. As a conventional mounting structure, as shown in FIG. 4, a supporting plate is provided on a protrusion 32 protruding from the lower surface of the weighing plate 31. In the structure in which the mounting screw 34 is screwed in from below 33, or as shown in FIG.
Is projected by deep drawing, and the projection part 32 is fitted to the weighing plate 31 to the projection 35, and the mounting screw is attached to the projection 32 from below the projection 35.
There is a structure in which 34 is screwed in via a washer 36.

(Problems to be solved by the invention) However, the former structure has a problem in that the position of the weighing plate 31 is raised by the protrusion margin of the protrusion 32, and the main body is increased in size. Further, in the latter structure, since the support plate 33 is generally made of thick metal and has high rigidity,
There is a problem that it is difficult to perform deep drawing of the protrusion 35.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a weighing plate mounting structure of a weighing machine that can be simply and surely mounted without increasing the size of the main body.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a weighing plate mounting structure of a weighing machine, in which a weighing plate is mounted on a supporting plate attached to a free end of a load cell. A mounting hole is provided, and a tubular fitting having a bottom is engaged with the mounting hole, while a protrusion that fits the mounting tool is provided on the weighing plate so that the weighing plate protrudes from the bottom of the mounting tool. The mounting screw is screwed into.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 3 shows a kitchen scale to which the weighing plate mounting structure according to the present invention is applied. In the figure, 1 is a substantially oval-shaped weighing machine main body having an operation switch 2, a display panel 3, etc. at one end, and 4 is A load cell having one end fixed to a mounting base 5 of the weighing machine main body 1 with a mounting screw 6 and cantilevered, and a support plate 7 mounted on the free end of the load cell 4 with a mounting screw 8.
Reference numeral 9 is a fixture, and 10 is a weighing plate mounted on the support plate 7.

The mounting plate 7 is made of a metal plate and has a positioning hole at one end.
As shown in FIG. 1, mounting holes 13 are formed in the recesses 12, 12 formed on both ends of the recesses 12, 12 so as to be lowered. Notches 14 and 14 are formed in the mounting hole 13 at positions facing each other.

As shown in FIG. 1, the fitting 9 is made of resin and has a cylindrical shape with a bottom, and the notches 14 and 14 of the fitting hole 13 are formed at positions 180 ° apart from each other on the outer peripheral surface of the upper end thereof. Lockable pieces 15, 15 that can be fitted are provided to project in the horizontal direction. Further, fan-shaped supporting pieces 16 and 16 are provided below the respective locking pieces 15 and 15, and press-contacting pieces 17 and 17 having an upper surface curved upwardly between the supporting pieces 16 and 16 are provided. Is projected. Further, a screw insertion hole 18 is bored in the bottom of the fixture 9.

The weighing plate 10 is resin-molded in a shape that the dish is turned upside down, and has a positioning projection 19 that fits into the positioning hole 11 of the support plate 7 and a fixture 9 attached to the support plate 7 on the lower surface. The projections 20, 20 to be fitted are provided so as to project. Also, each protrusion 20,
As shown in FIG. 1, the screw 20 is provided with a screw pilot hole 21.

In order to mount the weighing plate 10 on the support plate 7, first, as shown in FIG. 1, the fitting 9 is provided with the engaging pieces 15, 15 of the notches 14, 15 of the respective mounting holes 13 of the support plate 7. Insert it into each mounting hole 13 from below the support plate 7 so that it fits into the support plate 7.
After 16, 16 abut on the lower surface of the edge of the mounting hole 13, rotate it by approximately 90 ° in either left or right direction. As a result, the fixture 9
The locking pieces 15 and 15 are locked to the upper surfaces of the edges of the mounting holes 13 to prevent them from coming off, and the curved upper surfaces of the pressure contact pieces 17 and 17 are pressed to the lower surfaces of the edges of the mounting holes 13 to be attached without backlash. .

Next, the weighing plate 10 is placed on the positioning projection 19 and the projections 20 and 2.
It is placed on the support plate 7 so that 0 is fitted into the positioning hole 11 and the fittings 9 and 9, respectively. After that, as shown in FIG. 2, a mounting screw 23 is inserted from a work hole 22 provided in the main body 1, and a projection 20 of the weighing plate 10 is inserted from the screw insertion hole 18 of each fixture 9.
Screw into the screw pilot hole 21 of. As a result, the fixture 9 and the protrusion 20 of the weighing plate 10 are attracted to each other, and as a result, the weighing plate 10
Is firmly attached to the support plate 7 by pressure.

(Effects of the Invention) As is apparent from the above description, according to the present invention, since the fixture is attached to the attachment hole of the support plate and the protrusion of the weighing plate is fitted into the fixture, Since the support plate does not need to be provided with any protrusions or the like that require deep drawing, the processing is simple.

Further, since the protrusion of the weighing plate fits into the fixture and the weighing plate is pressed against the support plate without a gap, the weighing plate is not attached in a state of floating from the support plate, and the main body becomes large.

Furthermore, the weighing plate can be mounted simply by engaging the mounting tool with the support plate, placing the weighing plate, and screwing in the mounting screw, so that the mounting is simple. Has an effect of being firmly attached because it is pressed against the support plate.

[Brief description of drawings]

1 and 2 are exploded perspective views and sectional views, respectively, showing the mounting structure of the weighing plate according to the present invention, and FIG. 3 is a partial exploded perspective view of a kitchen scale to which the present invention is applied, FIG. 4, and FIG. FIG. 1 is a sectional view showing a conventional mounting structure for a weighing plate. 4 ... Load cell, 7 ... Support plate, 5 ... Fixture, 10 ...
… Weighing plate, 13 …… Mounting hole, 20 …… Projection, 22 …… Mounting screw.

Claims (1)

[Scope of utility model registration request] 1. A weighing plate mounting structure for a weighing machine, wherein a weighing plate is mounted on a supporting plate mounted on a free end of a load cell, wherein the supporting plate has a plurality of mounting holes, and the mounting holes have a bottomed cylindrical shape. While a tool is engaged, a protrusion that fits into the fixture is projected on the weighing plate, and a mounting screw is screwed into the protrusion of the weighing plate from the bottom of the fixture. Weighing plate mounting structure.