CN2052531U

CN2052531U - Desk spring balance with double-face scale

Info

Publication number: CN2052531U
Application number: CN 89209459
Authority: CN
Inventors: 刘德谦
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-09-02
Filing date: 1989-09-02
Publication date: 1990-02-07

Abstract

The utility model relates to a measuring device, in particular to a table type spring balance, which is composed of a pan, a machine frame, a deck and a scale. A cross on the lower part of the pan is connected with the heavy frame of the deck. The heavy frame moves downwards to drive a rack and a gear through a four bar linkage mechanism, and the direct deformation which is created by the stress of the spring is converted into circumferential rotation. The utility model adopts a double-face symmetrical scale, has the advantages of visual display, accurate display, simple structure, convenient use and convenient movement, are convenient for shoppers to supervise, and the common phenomenon of loss in weigh can be eliminated.

Description

Desk spring balance with double-face scale

The utility model relates to measurement instrument, specifically a kind of desk-top spring balance.

At present, the weighing utensil of using always on the selling market has steelyard and desk-top pan scale.These two kinds of scales show by scale all that to the value of weighing because scale mainly is to allow the personnel of selling goods watch, the people of shopping are difficult to see clearly.When if error in reading occurring, the shopper is difficult for finding, can't exercises supervision to it.When pan scale is moved, also be cumbersome, very inconvenient.

The utility model provides a kind of reading directly perceived at the shortcoming of above-mentioned existence, is convenient to supervision, the pan scale of conveniently moving.

Technical essential of the present utility model is:

It is made up of four parts such as the scale pan, frame, movement and scales, the cross of scale pan bottom links to each other with the heavy frame of movement, heavy frame moves down two extension spring stress deformations that make on the spring hanger, the tooth bar and the gear action that connect by the four-bar mechanism drivening rod, the straight line that the stressed size of extension spring is produced becomes the circumference rotation of pointer.Spring hanger is provided with to be adjusted screw rod and adjusts nut, is used for realizing that zero-bit withers whole.Two handles that symmetry is arranged on the frame of movement outside, frame bottom are equipped with vibrationproof, anti-skidding rubber cushion blocks.The steady arm that links to each other with the movement bottom is housed on the chassis prevents to damage spring.The two-sided scale of two symmetries is display parts of weighing, is connected with frame, for bibeveled trapezium structure is placed.

After the utility model occurs, can make the intuitive display of weighing, be convenient to shopper's supervision, can be stopped for the common phenomenon of giving short weight.It is simple in structure, and use, conveniently moving are easy to utilize.

Description of drawings:

Fig. 1 is external form figure of the present utility model.

Fig. 2 is a structural representation of the present utility model.

Fig. 3 is the side view of Fig. 2.

Further narrate below in conjunction with accompanying drawing:

Be used for the scale pan (1) that splendid attire claimed thing for circular or square, and the cross (2) of the scale pan (1) bottom is the web member that the scale pan (1) combines with heavy frame (3).Frame (4) is the framework of scale structure, mainly contains 1.5 millimeters steel plate punching presses and makes, and cover plate is made with 0.5 millimeter steel plate in two sides, and the middle part of both sides is welded with the handle (5) for mobile usefulness.Frame (4) bottom is four jiaos a rubber cushion blocks (6) respectively is housed.The extension spring (8) that hangs with respectively be no initial tension spring on two shoulders of spring hanger (13), and the lower end of extension spring (8) is connected bottom heavy frame (3), and the protection of extension spring is realized by steady arm (7).The adjustment nut of rotate adjusting on the screw rod (15) with hand (14) can make pointer be adjusted to zero-bit, to left-handed for negative, to dextrorotation for just.Scale (12) is circular or square two-sided symmetrical structure, it is the display part of weighing, adopt the legal system system of units of measurement, scale mainly is made up of dish seat (18), outer rosette (19), interior trim ring (20), visor (21), pointer parts such as (22).Scale (12) is connected with frame, is bibeveled trapezium structure, and its angle of inclination is 15 °-20 °.

When weighing, heavy frame (3) moves down drive tooth bar connecting rod (9), tooth bar (10) and clock pin gear (11) by four-bar mechanism (17) control rotates pointer (22), shows the value of weighing.

The utility model adopts two-sided symmetrical scale, and spring stress causes gear action, and pointer (22) rotates, and is provided by scale (12), makes its intuitive display, accurately, and sell goods personnel and shopper all can come into plain view to weighing.

Claims

1, a kind of desk-top spring balance of forming by the scale pan and frame etc. of two-sided scale, it is characterized in that it comprises the scale pan, frame, movement and scale, the cross (2) of the scale pan (1) bottom links to each other with the heavy frame (3) of movement, heavy frame (3) moves down two extension springs (8) stress deformation that makes on the spring hanger (13), drive tooth bar (10) and gear (11) action that tooth bar connecting rod (9) connects by four-bar mechanism (17), the circumference that extension spring (8) straight line that stressed size produced is become pointer rotates; Spring hanger (13) is provided with to be adjusted screw rod (15) and adjusts nut (14); Two handles (5) that symmetry is arranged on the frame of movement outside (4), rubber cushion blocks (6) is equipped with in the frame bottom; The steady arm (7) that links to each other with the movement bottom is housed on the chassis; The two-sided scale (12) of two symmetries links to each other with frame (4), is trapezoidal placement.

2,, it is characterized in that extension spring (8) is no initial tension spring according to the desk-top spring balance of the described two-sided scale of claim 1.

3, according to the desk-top spring balance of the described two-sided scale of claim 1, it is characterized in that scale (12) links to each other with frame, be the trapezium structure of double inclined plane scale, its angle of inclination is 15 °-20 °.

4,, it is characterized in that the scale pan (1) is for circular or square according to the desk-top spring balance of the described two-sided scale of claim 1; Scale (12) is circular or square.