CN2118976U

CN2118976U - Hand-hold spring scale

Info

Publication number: CN2118976U
Application number: CN 92210501
Authority: CN
Inventors: 王会武
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-27
Filing date: 1992-03-27
Publication date: 1992-10-14

Abstract

The utility model relates to a portable weight measuring instrument. The portable weight measuring instrument is characterized in that in an outer shell, the upper part is provided with a pull spring, the middle part is provided with a straight tooth rack, and the lower part is provided with a balance bar, which are mutually connected into one unit; a dial is arranged at the lower side of a front lid; measuring accuracy principally depends an adjusting cap on the upper part of the pull spring in adjusting the elasticity of the spring, which enables the pointer to point positions at load or to retain null position at no-load. The utility model has the advantages of small volume, high accuracy, and beauty; the portable weight measuring instrument is convenient to carry, and can detect the measuring accuracy of shopping at any time.

Description

hand-hold spring scale

The utility model relates to a kind of weight apparatus, particularly a kind of hand spring scale.

Civilian in the market spring balance has two kinds: a kind of is common round bar formula, and another kind is a disc type, and round bar formula spring balance precision is not high, and what are also unclear to see the weighing amount, and error is bigger; The comparison heaviness though the disc type spring balance has index dial, carry very inconveniently,, often cause some illegal operators to damage consumer's interests owing to be applicable to the high metering device of small but excellent degree of residential applications without comparison, cause and give short weight, bring bad influence.

The purpose of this utility model provides a kind of hand spring scale of easy to use, accurate measurement.

The utility model is achieved in that the middle part has spur rack in the enclosure, the spur rack upper end is connected with drawing the spring lower end, draw the spring upper end to be connected with the adjusting lever lower end of middle part, shell upper end, the adjusting lever upper end has the adjustment cap, having gear wheel at the spur rack right part is connected as a single entity with pinion wheel is coaxial, pinion wheel and spur rack engagement, gear wheel with in the gearing mesh of middle part, spur rack bottom, gear is connected as a single entity with pointer is coaxial, having back up pad on spur rack top is connected with support column, have the rack support post in middle part, spur rack middle part, subordinate portion has the arm beam of steelyard in the enclosure, and arm beam of steelyard upper end is connected with the spur rack lower end, the lower end is connected with the steelyard hook upper end, have compression spring on the arm beam of steelyard, have positioning cap in the compression spring upper end, the top of positioning cap has locating ring.

When using, because the downward pulling force of article, make spur rack drive pinion rotation, pinion wheel is fixed as one with gear wheel is coaxial, and gear wheel is also pressed certain orientation simultaneously and rotated, gear wheel and gearing mesh, gear is coaxial with pointer to be one, pointer also upwards rotates gradually, when reaching balance, promptly is that scale goes out Item Weight; When steelyard hook broke away from article, pointer returned to zero position again, as not so drawing the spring stress size by adjusting the cap adjustment, reached levels of precision.

The utility model compared with prior art has following advantage:

1, volume is little, and is easy to carry;

2, the degree of accuracy height is elegant in appearance;

3, simple in structure, cost is low easy to implement to promote.

Concrete structure of the present utility model and embodiment are provided by the following drawings.

Fig. 1 cuts open for the utility model one-piece construction and shows synoptic diagram.

Below in conjunction with accompanying drawing concrete structure of the present utility model and embodiment are further described.

Shown in accompanying drawing 1, shell 3 is to be the flat ellipse shape, material is that metal or rigid plastic all can, has protecgulum 5 respectively in shell 3 front and back, bonnet 18, the middle part has spur rack 9 in shell 3, spur rack 9 is shape ringwise, the right side has tooth bar, spur rack 9 upper ends are connected with drawing spring 10 lower ends, draw spring 10 upper ends to be connected with adjusting lever 13 lower ends of middle part, shell 3 upper end, adjusting lever 13 upper ends have the cap 12 of adjustment, has scale ring 11 in both sides, shell 3 upper end, have gear wheel 15 and pinion wheel 16 coaxial being fixed as one at spur rack 9 right parts, pinion wheel 16 and spur rack 9 engagements, gear wheel 15 and the gear 7 in middle part, spur rack 9 bottom mesh, gear 7 and pointer 6 coaxial being connected as a single entity, having stud plate 17 on spur rack 9 tops is connected with support column 8, support column 8 is distributed by three post shapes triangular in shape, on back up pad 17 tops, protecgulum 5 bottoms have weight scale dish 4, has rack support post 14 in middle part, spur rack 9 middle part, the bottom has the arm beam of steelyard 2 in shell 3, the upper end of the arm beam of steelyard 2 is connected with spur rack 9 lower ends, the lower end is connected with steelyard hook 1 upper end, on the arm beam of steelyard 2, has compression spring 21, have positioning cap 20 in compression spring 21 upper ends, have locating ring 19 on the top of positioning cap 20.

Claims

1, a kind of hand spring scale, it comprises steelyard hook (1), shell (3), scale ring (11), weight scale dish (4), protecgulum (5), bonnet (18), it is characterized in that: the middle part has spur rack (9) in shell (3), spur rack (9) upper end is connected with drawing spring (10) lower end, draw spring (10) upper end to be connected with adjusting lever (13) lower end of middle part, shell (3) upper end, adjusting lever (13) upper end has adjustment cap (12), have gear wheel (15) and coaxial being connected as a single entity of pinion wheel (16) at spur rack (9) right part, pinion wheel (16) and spur rack (9) engagement, gear wheel (15) and the gear (7) in spur rack (9) middle part, bottom mesh, gear (7) and coaxial being connected as a single entity of pointer (6), having back up pad (17) on spur rack (9) top is connected with support column (8), has rack support post (14) in middle part, spur rack (9) middle part, the bottom has the arm beam of steelyard (2) in shell (3), the upper end of the arm beam of steelyard (2) is connected with spur rack (9) lower end, the lower end is connected with steelyard hook (1) upper end, on the arm beam of steelyard (2), has compression spring (21), have positioning cap (20) in compression spring (21) upper end, have locating ring (19) on the top of positioning cap (20).