JPH0326427Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] The present invention relates to improvement of scales.

〔Example〕

The embodiment shown in the figure has an inverted V-shaped block 3 on the top wall of a hollow disc-shaped case 2 with a scale plate 1 on its surface, the top end 4 of which is located on the outside of the case 2, and both lower ends 5. , 5' are on the inside, and fixed with screws 6, 6', and a hanging ring 7 is attached to the top end 4 of this block 3 so as to be able to rise and fall freely, and grooves 8 are formed in both lower ends 5, 5' of the block 3. , 8' are bored, and sliding members 9, 9' are supported in these grooves 8, 8' by central shafts 10, 10'.
and the inner end 1 of the other sliding member 9'.
1' are placed in an overlapping state, and the contact surfaces in the overlapping state are made into slippery curved surfaces 12, 12', and coil springs 13, 13' of the same standard are attached to the outer ends of both sliding members 9, 9'. The pieces 14, 14' with female threads 15 are fixed in the lower ends of the coil springs 13, 13', and a U-shaped hanging member 16 is attached to the bottom wall of the case 2. The upper end portions 17, 17' are provided inside the case 2 and the lower end portion 18 is located outside the case 2 so as to be able to move up and down. The hanging member 16 is suspended from the coil springs 13, 13' by screwing the screws 19 into the female screws 15 of the pieces 14, 14', and the connecting ring 20, Attach the hanging hook 21 via 20',
Furthermore, there is a short tubular boss 2 in the center of the case 2.
2 is fixed, a pinion 24 is rotatably built into the inner diameter hole 23 of this boss 22 via a support shaft 25 and a bearing 26, and one end of the support shaft 25 of this pinion 24 is placed at the center point of the scale plate 1. A notch that protrudes outward, has a male screw 27 carved in the protruding end, fixes the pointer 28 to the protruding end with a nut 29 in a zero-pointing state, and exposes half of the pinion 24 on the side surface of the boss 22. 30 is cut out, and a vertically oriented rack 31 is inserted into this notch 30 so that the rack 31 and the pinion 24 are engaged with each other.
1 to both upper ends 17 of the above-mentioned hanging member 16,
Both ends of a spring 35 is connected by a support shaft 34 to the midpoint of a horizontal rod 33 which is fixed by a nut 32 between the racks 31 and 17', and engages the rack 31 and the pinion 24 between the rack 31 and the horizontal rod 33. is hooked through the hook member 36 and the hook hole 37, and a guide member 38 for vertical movement of the rack 31 is provided between the opening edges of the notch 30, and the inner end is attached to the block 3 with a sliding member. 9, 9' inner end 11,
11', a screw hole 40 whose outer end faces the outside of the case 2 is bored, and a zero adjustment screw 41 is screwed into this screw hole 40. The inner end presses down the overlapping portion of the inner end portions 11, 11' of the sliding members 9, 9' from above.

[Effect]

Since the present invention has the above-mentioned configuration, when an object to be weighed (not shown) is hung on the hanging hook 21, the hanging hook 21, the connecting rings 20, 20', the hanging member 16, the horizontal rod 33, Rack 31, frame 14,
14' is lowered by the extension of the coil springs 13, 13', rotates the pinion 24, spindle 25, and pointer 28 by an amount corresponding to the weight of the object to be weighed, and the weight of the object is determined by the scale of the scale plate 1 indicated by the pointer 28. It was designed to help people understand what is going on.

For example, when it is necessary to align the zero point, the zero adjustment screw 41 is rotated forward and backward to adjust the amount of depression of the overlapping portion of the inner ends 11, 11' of the sliding members 9, 9'. Bye. That is, when the amount of depression increases, the outer ends of the sliding members 9, 9', the coil springs 13,
13', the block bodies 14, 14', the hanging member 16, the horizontal rod 33, and the rack 31 descend, and when decreasing, they rise to correct the pinion 24, spindle 25, and pointer 28 by the amount corresponding to the amount of depression. It rotates in the opposite direction. in the end,
The zero point adjustment operation can be performed by turning the zero adjustment screw 41 while looking at the point of the pointer 28 and the zero point.

[Problems that conventional techniques and ideas attempt to solve]

Conventionally, this type of scale has the above-mentioned sliding member 9,
9′ is not interposed and both coil springs 13,
The upper end of the pointer 13' is directly connected to the block 3, and the zero point is set by changing the phase angle (installation angle) of the pointer attached to the spindle 25 of the pinion 24, loosening the pointer's mounting nut, and adjusting the pointer's mounting nut. This was achieved by determining the phase angle and tightening the mounting nut. In other words, not only is the zero point adjustment operation cumbersome and inconvenient, but when the pointer with the phase angle determined is maintained with the fingers and the mounting nut is tightened, the phase angle of the pointer with the determined phase angle is determined. There was an inconvenience that it sometimes moved. In addition, in order to eliminate such inconveniences, a type of device in which the phase angle determination state is maintained by an auxiliary screw instead of being maintained by fingers is also known. However, the above two types of scales lack simplicity because they do not allow for fine adjustment while looking at the tip of the pointer and the zero point, unlike the scale of the present invention.

[Means for solving problems]

In the present invention, a pair of sliding members 9, 9' are supported by central shafts 10, 10' at both lower ends of a block 3 having a hanging part, and the inner end 11 of one sliding member 9 and the sliding member 9' are supported by central shafts 10, 10'. The inner end portion 11' of the member 9' is in an overlapping state, and the contact surfaces in the overlapping state are smooth curved surfaces 12, 12', and both sliding members 9,
Coil springs 13, 13' of the same standard are suspended from the outer ends of the coil springs 13, 13', and hanging hooks 21, etc. of the objects to be weighed are suspended from the lower ends of these coil springs 13, 13' via a hanging member 16 spanning both lower ends. The lower part is provided, and the amount of expansion and contraction of these coil springs 13, 13' is easily controlled.
1 and pinion 24 with a pointer 28, etc., and the block 3 has an inner end facing the overlapping portion of inner ends 11, 11' of sliding members 9, 9' and an outer end thereof. A screw hole 40 that opens toward the outside of the case 2 is drilled, and a zero adjustment screw 41 is screwed into this screw hole 40 so that the inner end of the zero adjustment screw 41 is inserted into the inside of the sliding member 9, 9'. The gist is that the overlapping portions of the end portions 11, 11' are pressed down from above, and this gist solves the above-mentioned problems.

[Effect of idea]

As mentioned above, the present invention not only has the convenience that zero point adjustment can be performed extremely simply and easily by rotating the zero adjustment screw 41, but also has the advantage that the pointer of the above-mentioned conventional device does not move. No inconvenience will occur, and furthermore, as mentioned above, the zero point adjustment operation can be easily performed by turning the zero adjustment screw 41 while looking at the needle tip of the pointer 28 and the zero point. It has certain practical effects.

[Brief explanation of the drawing]

The figures show an embodiment of the scale of the present invention, in which Fig. 1 is a perspective view showing the whole, Fig. 2 is a front view showing the main parts, Fig. 3 is a sectional view showing the main parts, and Fig. 4 is a cross-sectional view showing the main parts. FIG. 2 is a cross-sectional view of the main part shown in a state where the amount of depression by the zero adjustment screw is increased. 1... Scale plate, 2... Case, 3... Block, 4... Top end, 5, 5'... Bottom end, 6,
6'...screw, 7...hanging ring, 8,8'...groove,
9, 9'...Sliding member, 10, 10'...Central shaft,
11, 11'...inner end, 12, 12'...curved surface,
13, 13'... Coil spring, 14, 14'... Piece body, 15... Female screw, 16... Hanging member, 17,
17'...Upper end, 18...Lower end, 19...Male thread, 20, 20'...Connection ring, 21...Hanging hook, 22...Boss, 23...Inner diameter hole, 24
... Pinion, 25 ... Support shaft, 26 ... Bearing, 2
7...Male thread, 28...Pointer, 29...Nut,
30... Notch, 31... Rack, 32... Nut, 33... Horizontal rod, 34... Support shaft, 35... Spring, 36... Hook member, 37... Hook hole, 38...
... Guide member, 40 ... Screw hole, 41 ... Zero adjustment screw, 42 ... Lower limit adjustment screw.

Claims (1)

[Scope of utility model registration request] A pair of sliding members 9, 9' are supported by central shafts 10, 10' at both lower ends of the block 3 having a hanging part, and the inner end 11 of one sliding member 9 and the other sliding member 9' A curved surface 1 whose inner end portion 11' is in an overlapping state and whose abutting surface is slippery in the overlapping state.
2, 12', and coil springs 13, 13' of the same standard are suspended from the outer ends of both sliding members 9, 9', and a suspension straddles the lower ends of these coil springs 13, 13'. A hanging part such as a hook 21 for hanging the object to be weighed is provided via a member 16, and the amount of expansion and contraction of these coil springs 13, 13' is displayed on a scale with a pointer 28 etc. via a rack 31 and a pinion 24, Furthermore, a screw hole 40 is bored in the block 3, and the inner end faces the overlapping part of the inner ends 11 and 11' of the sliding members 9 and 9', and the outer end opens toward the outside of the case 2. The inner end of the zero adjustment screw 41 is inserted into the screw hole 40 at the inner end 11 of the sliding member 9, 9'.
A scale characterized in that the overlapped portion of the scale 11' is pressed down from above.