JP3719593B2 - Pan base fixing mechanism of scale - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a scale pan base fixing mechanism for supporting a tray in an electronic scale or the like.
[0002]
[Prior art]
In general, a tray in an electronic scale or the like is used by being placed on a pan base. For example, as shown in FIG. 4, the conventional pan base 1 is provided with screw holes 4 on the upper end surface of the load receiving shaft 3 protruding upward from the main body 2, and provided with convex portions 5 on both sides thereof. The convex portions 5 are respectively applied to the two concave portions formed in FIG. The tray 7 is placed on the pan base 1 assembled in this way.
[0003]
[Problems to be solved by the invention]
However, in this structure, the pan base 1 cannot be positioned accurately with respect to the load receiving shaft 3, and a complicated mechanism is required to perform alignment. Further, the pan base 1 is easy to rotate, its posture becomes unstable, and tilting may affect the measurement accuracy.
[0004]
An object of the present invention is to provide a pan base fixing mechanism for a scale that solves the above-described problems and can stably fix the posture of the pan base.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the pan base fixing mechanism of the scale according to the present invention has a projecting piece-like shape on the side of the upper end surface of the load receiving shaft when the pan base on which the tray is placed is mounted on the load receiving shaft. Protruding portions are formed, and a sandwiching portion for sandwiching the projecting portions from above is formed on the back side of the pan base, and the pan base is screwed through the screw holes provided in the pan base. It is fixed to the upper end surface.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the embodiment shown in FIGS.
FIG. 1 is an exploded perspective view of an electronic scale. Various function switches 12 and a display panel 13 are provided on the front surface of the scale body 11, and a central portion is a weighing portion.
[0007]
A load receiving shaft 14 connected to a load measuring portion in the balance main body 11 protrudes upward from the hole portion 15, and a pan base 16 made of a metal die cast or a synthetic resin material is provided on the upper end portion of the load receiving shaft 14. Further, a tray 17 is placed on the pan base 16.
[0008]
A screw hole 14b is provided in the upper end plate 14a of the load receiving shaft 14, and a protruding piece-like protrusion 14c is formed on the side of the upper end portion 14a.
[0009]
The pan base 16 has at least two arms from the base portion 16a, and in the embodiment, four arms 16b projecting radially and tilting upward, and is made of rubber that also serves as a slip stopper attached to the tip of each arm 16b. The tray 17 is supported via a cushion 16c.
[0010]
As shown in FIG. 3, on the back side of the base portion 16a, a sandwiching portion 16d composed of two wall portions for sandwiching the protrusion 14c of the load receiving shaft 14 from above is provided. A long hole 16e having a longitudinal direction is provided in a direction surrounding the sandwiching portion 16d. Instead of the long hole 16e, a round hole having a margin for adjustment may be used.
[0011]
In order to attach the pan base 16 to the load receiving shaft 14, the pan base 16 is placed on the upper end plate 14a of the load receiving shaft 14 from above, and the protrusion 14c of the load receiving shaft 14 is clamped by the clamping portion 16d of the pan base 16. Further, the screw 18 is screwed into the hole 14b of the load receiving portion 14 through the long hole 16e and fixed as shown in FIG.
[0012]
At this time, since the hole of the pan base 16 through which the screw 18 passes is a long hole 16e, the rotation angle position of the pan base 16 is finely adjusted using the long hole 16e. And the saucer 17 is mounted via the arm 16b of the pan base 16, and it is set as the state which can be measured.
[0013]
It should be noted that the screw 18 may be lightly tightened using a disc spring so that the screw 18 can be easily removed. In this case, fine adjustment of the rotational angle position of the pan base 16 is further facilitated.
[0014]
At the time of measurement, the weight of the weighing object on the tray 17 is transmitted to the load receiving shaft 14 via the pan base 16 and is measured by the load measuring unit in the balance body 11. Then, according to the functions required by the various function switches 12, the measured values and the like are displayed on the display panel 13.
[0015]
【The invention's effect】
As described above, the pan base fixing mechanism of the scale according to the present invention makes it easy to adjust the angle of the pan base on which the tray is placed, and can be easily attached to the pan base. The posture of the base is stable and the tray can be placed correctly.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a scale.
FIG. 2 is a rear perspective view of the base of the pan base.
FIG. 3 is a perspective view of a state in which a pan base is attached.
FIG. 4 is an exploded perspective view of a conventional balance.
[Explanation of symbols]
11 Scale main body 12 Various function switches 13 Display panel 14 Load receiving portion 14a Upper end portion 14b Screw hole 14c Projection portion 15 Hole portion 16 Pan base 16a Base portion 16b Arm 16c Cushion 16d Clamping portion 16e Long hole 17 Sauce pan 18 Screw

Claims (2)

When mounting the pan base on which the receiving tray is placed on the load receiving shaft, a protruding piece-like protrusion is provided on the side of the upper end surface of the load receiving shaft, and the protruding portion is sandwiched from above on the back side of the pan base. And a pan base fixing mechanism for the scale, wherein the pan base is fixed to the upper end surface of the load receiving shaft by a screw through a screw hole provided in the pan base. 2. The pan base fixing mechanism of the scale according to claim 1, wherein the screw hole is a long hole.

Images