CN2160892Y - Large-weighing hand dial spring balance - Google Patents

Abstract

The utility model relates to a small-sized large-weighing portable dial spring balance, which belongs to the daily measuring device field. The utility model is characterized in that a box type part is used as an upper suspension bracket; gravity is acted on the upper suspension bracket through a measuring spring and a spring hook; a front and back outer shells are also fastened with the upper suspension bracket. A zero adjusting mechanism adopts the friction match of a gear and a gear shaft; directly rotating shaft end can adjust zero. The utility model has the advantages of simple structure, small volume and convenient use. The large-weighing hand dial spring balance can weigh 24 kg heavy objects. A roll rule is appended on the large-weighing hand dial spring balance.

Description

Large-weighing hand dial spring balance

The utility model relates to that a kind of small-sized, weighing is big, the portable spring scale dial, belongs to daily measurement instrument field.

The small spring scale dial that constitutes by two springs and parts such as gear, tooth bar of development and production both at home and abroad in recent years, its null setting design all adopts zeroing bolt and upper hanger threaded engagement to install, during turn zeroing bolt, thereby upper and lower hanger can upper and lowerly move and drive tooth bar, gear, pointer, makes the pointer zero set.Its weak point is that its rigidity is limited, will be out of shape by overweight pulling force, is no more than ten kilograms so the scale of this structure is generally weighed because upper hanger is a cambered plate.

The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and a kind of spring scale scale is provided, and the structure of improving null setting and upper hanger weighs with increase, and the function of an additional tolerance length.

Design proposal of the present utility model is: upper hanger (9) is a box-shaped part such as a Fig. 3, shown in Figure 4, system is stretched by sheet steel and forms, there are two support holes on the plane on the box-shaped part, inserts a spring hook (10) respectively, and spring is hooked in this support holes and can turns round repeatedly, hang with metering spring on the spring hook, Weighing mechanisms such as following link plate, forward and backward of box-shaped part is respectively driven two pilot holes that fix with the front and back shell, and box shape assembly left and right sides lower side is the hard point of drop handle (8).Two interior bent-up ends that are drop handle insert respectively in the space of upper hanger two inboards.Gear (6) and gear shaft (5) are frictional fit, and an axle head of gear shaft passes through hole on the back cover, and another axle head passes through hole on the fore shell, connect a pointer (4), and housing is as the two supports of gear shaft (5).Inferoanterior fixedly mounts a tape measure in shell, and opening is in the shell lower end.

The utility model has following advantage compared to existing technology:

1, the box structure of upper hanger is bigger than the arc board-like upper hanger rigidity of prior art, drop handle (8) colludes at the upper hanger dual-side, shell is not stressed, range of weighing reaches 24 kilograms by 10 kilograms of original maximums, and upper hanger no longer is connected with bolt, structure is comparatively simple, only changes the calculating spring and the product of printed scale with regard to the variable different range of weighing that swap out of different parameters simultaneously, is convenient to variation, the seriation of product.

2, null setting adopts the structure of gear and gear shaft frictional fit.The pointer that the gear frictionally drives on axle and the axle when weighing rotates synchronously.Directly rotate the axle head that is exposed at behind the shell during zeroing, because the friction force between gear shaft and gear is less than spring force, axle skids and pointer can be transferred to zero-bit with gear.So not only easy to use but also simplify the structure, changed the original zeroing structure that cooperates installation by a bolt with the upper hanger screw.

3, an additional tape measure design has enlarged usable range in the shell, is convenient to post office, luggage delivery, will weigh simultaneously and the use of the length of Measuring Object.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the overall setup figure of the portable spring scale scale of a kind of big weighing.

Fig. 2 is the A-A cut-open view of Fig. 1.

Fig. 3 is the upper hanger front view of the portable spring scale scale of a kind of big weighing.

Fig. 4 is the upper hanger vertical view of the portable spring scale scale of a kind of big weighing.

Below in conjunction with accompanying drawing embodiment is done further narration:

A kind of weighing is 24 kilograms, and the portable spring tolerance scale of scale division value 200 grams has the tape measure of rice one by one, and shell is by injection mo(u)lding, and its inner structure as shown in Figure 1 and Figure 2.

Two extension spring Weighing mechanisms are colluded ［ 10 ］, following link plate ［ 14 ］, drop handle ［ 8 ］, are claimed that colluding ［ 16 ］ forms by upper hanger ［ 9 ］, metering spring ［ 11 ］, spring;

Indicating mechanism is made up of tooth bar ［ 7 ］, tooth bar extension spring ［ 12 ］, gear ［ 6 ］, gear shaft ［ 5 ］, pointer ［ 4 ］, index dial ［ 23 ］;

Null setting is by gear ［ 6 ］ and gear shaft ［ 5 ］ frictional fit;

Tape measure mechanism is made up of fore shell ［ 2 ］, tape measure ［ 19 ］, chi spring ［ 20 ］, chi cover ［ 18 ］, cover plate ［ 17 ］, and opening is in the shell lower end.

Upper hanger ［ 9 ］ is designed to a box-shaped ［ to be seen Fig. 3, Fig. 4 ］ and on the plane two support holes is arranged on it, spring hook ［ 10 ］ inserts this hole respectively, and can in this hole, turn round repeatedly, Weighing mechanism just hangs over spring hook lower end, the box-shaped upper hanger is forward and backward respectively opens two holes, wears screw when shells are fixedly connected before and after these two Kong Weiyu and uses.The face downside is the hard point of drop handle ［ 8 ］ about the box-shaped upper hanger, two interior bent-up ends that are drop handle ［ 8 ］ insert in the space of upper hanger side, cleaner catches on the both sides of upper hanger like this, and shell is not stressed, because upper hanger rigidity causes the weight of this scale energy weighing 24 kilogram weights greatly.

Gear ［ 6 ］ adopts frictional fit with gear shaft ［ 5 ］, the pointer that the gear frictionally drives on axle and the axle when weighing rotates synchronously, and during zeroing, rotation is exposed at the axle head behind the shell, because axle and the friction force of gear is less than spring force, spool and gear skid and just pointer can be adjusted to zero-bit.Like this, the structure of scale is greatly simplified.

Tolerance scope of shell inferoanterior fixed installation is 1 meter a tape measure, and opening is pulled out the mensurable length of chi end in the shell lower end, after unclamping promptly voluntarily in the indentation shell.

Claims (1)

1, the portable spring tolerance of a kind of big weighing scale is by upper hanger [9], following link plate [14], metering spring [11], tooth bar [7], gear [6], gear shaft [5], pointer [4], index dial [23], drop handle [8], scale colludes [16], shell [1], [2] form, it is characterized in that upper hanger [9] is a box-shaped part, there are two support holes on plane on it, spring hook [10] inserts this hole respectively, hang with metering spring on the spring hook, Weighing mechanisms such as following link plate, before the box-shaped part, the back respectively open two with before, rear casing [2], [1] pilot hole that fixes, a box-shaped part left side, right side lower side is the hard point of drop handle [8]; Gear [6] and gear [5] frictional fit, gear shaft one axle head pass back cover [1] and go up through hole, and the other end passes fore shell [2] and goes up through hole, connect a pointer [4], and housing is as the two supports of gear shaft [5]; Inferoanterior fixedly mounts a tape measure in shell, and opening is in the shell lower end.

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