CN200941051Y

CN200941051Y - Plammet thread with automatic retractable structure

Info

Publication number: CN200941051Y
Application number: CN 200620106786
Authority: CN
Inventors: 章启江
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-17
Filing date: 2006-08-17
Publication date: 2007-08-29
Anticipated expiration: 2016-08-17

Abstract

The utility model discloses a plumb-line with an automatic retraction jack, the plumb-line consisting of a soft droop line, one end of which has a drop ball; the other end of the soft droop line is wound, through a positioning ring, around the periphery of a revolving tray, which has chamber where a reset coil spring is positioned; the revolving tray is positioned in a housing formed by a upper housing and a lower housing matched together, with the upper housing having, on the base surface, a concave mouth that goes through a hole on the bottom of the revolving tray and is connected to one end of the reset coil spring; and the positioning ring is stuck on the joining section of the upper housing and the lower housing. The soft droop line can automatically droops down for measurement with the pulling of the drop ball and can recoil onto the revolving tray with the retracting force of the reset coil spring, making the operation easy and precise; the drop ball, upon reaching the concave mouth, will be attached to the housing by a magnet positioned inside the housing; the plumb-line is thus small in size and extremely easy to carry and use.

Description

Pedal line with automatic deploying and retracting structure

Technical field

The utility model relates to the measuring apparatus field, relates in particular to a kind of pedal line with automatic deploying and retracting structure.Be applicable to mathematics teaching in junior middle school, or building trade is measured the verticality of body of wall or other industry solid articles.

Background technology

In the past in mathematical education, the teacher ties up to the fine rule end with a fine rule and hangs a metal weight, utilize the stretching fine rule of the suction that is subjected to the earth's core of metal weight, thereby allow the observation of students verticality, so not only extremely inconvenience in the use, and the student does not see Chu, the visual effect extreme difference, and building trade hangs a brick with any cord line especially or the metal weight is surveyed verticality, and is extremely inaccurate.

Application number 200420011987 utility model patents have disclosed a kind of Perpendicular line, be specifically related to a kind of improved pedal line, below a main vertical rod, the chassis be installed, be connected to soft bar in the upper end of main vertical rod, terminal bolt at soft bar has vertical line, in the wired bob of the lower end of vertical line bolt; It has been saved and has hung the time that direct sum is repaired, and is applicable to that corner piling-up, a wall, pier, bealock etc. locate.But do not possess the automatic deploying and retracting structure, when folding and unfolding, want two people's operations usually, waste time and energy; And volume is big, and rustic can't satisfy demonstration use in the teaching.

Summary of the invention

Technical problem to be solved in the utility model is at above-mentioned deficiency, provides a kind of rational in infrastructure, uses the pedal line with automatic deploying and retracting structure easy to carry.

The technology path that is adopted that solves the problems of the technologies described above of the present utility model is: have the pedal line of automatic deploying and retracting structure, comprise soft vertical line, in the wired bob of an end bolt of soft vertical line; The technical measures of taking comprise: the flexible cord centring ring of the soft vertical line other end through wearing is wrapped in the rotating disk periphery, rotating disk has an inner chamber and is provided with the wind spring that resets, rotating disk is positioned at by upper shell and the equipped housing that constitutes of lower house, the lower house bottom surface is shaped on recessed chewing, recessed the chewing of lower house passed the rotating disk bottom through-hole and is connected wind spring one termination that resets, and the flexible cord centring ring is fastened on upper shell and lower house joint portion.

The technical measures of taking also comprise: for preventing the wind spring disengaging ejection that resets, rotating disk top is connected with the screens lid.

Upper shell and lower house embedding hoop have magnet, and the upper shell of corresponding magnet outer end and lower house joint portion are shaped on can put the groove that line weighs down.The line bob is placed in the groove, and under the suction of magnet, magnet firmly is positioned in the groove.

For preventing the knotting of soft vertical line, and be convenient to the level and smooth up and down displacement of soft vertical line break-in, the lower house bottom surface also is fixed with first reference column and second reference column that is used to overlap soft vertical line, is equipped with the card pearl on the soft vertical line between flexible cord centring ring and line weigh down.

Upper shell and lower house are provided with the screw pilot hole and fix through securing member.

Compared with prior art, the flexible cord centring ring of the soft vertical line other end of the utility model through wearing is wrapped in the rotating disk periphery, rotating disk has an inner chamber and is provided with the wind spring that resets, rotating disk is positioned at by upper shell and the equipped housing that constitutes of lower house, the lower house bottom surface is shaped on recessed chewing, recessed the chewing of lower house passed the rotating disk bottom through-hole and is connected wind spring one termination that resets, and the flexible cord centring ring is fastened on upper shell and lower house joint portion.Soft vertical line utilizes that line bob meeting is automatically sagging measures and the restoring force of the wind spring that resets shrinks the rotating disk that enters in the housing automatically, both convenient, accurate again, and line weighs down to be put into magnet that groove will be positioned at housing and holds with housing and combine regularly, its volume is little, carries with extremely easy to use.It is rational in infrastructure, and is easy to use, carries to act freely; Especially satisfy demonstration use in the teaching.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the structural representation that Fig. 1 user mode is opened upper shell.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Fig. 1 is to shown in Figure 2: have the pedal line of automatic deploying and retracting structure, comprise soft vertical line 5, in the wired bob 9 of an end bolt of soft vertical line 5; The flexible cord centring ring 6 of soft vertical line 5 other ends through wearing is wrapped in rotating disk 2 peripheries, rotating disk 2 has an inner chamber and is provided with the wind spring 4 that resets, rotating disk 2 is positioned at by upper shell and the equipped housing 1 that constitutes of lower house, the lower house bottom surface is shaped on recessed chewing, recessed the chewing of lower house passed rotating disk 2 bottom through-holes and is connected wind spring 4 one terminations that reset, and flexible cord centring ring 6 is fastened on upper shell and lower house joint portion.

For preventing the wind spring 4 disengaging ejections that reset, rotating disk 2 tops are connected with screens lid 3.

Upper shell and lower house embedding hoop have magnet 10, and the upper shell of corresponding magnet 10 outer ends and lower house joint portion are shaped on the groove that can put line bob 9.Line is weighed down 9 be placed in the groove, and under the suction of magnet 10, magnet 10 firmly is positioned in the groove.

For preventing soft vertical line 5 knottings, and be convenient to the level and smooth up and down displacement of soft vertical line 5 break-ins, the lower house bottom surface also is fixed with first reference column 71 and second reference column 72 that is used to overlap soft vertical line 5, is equipped with card pearl 8 on the soft vertical line 5 between flexible cord centring ring 6 and the line bob 9.

It is fixing through securing member 12 that upper shell and lower house are provided with screw pilot hole 11.

Need only during use the utility model is placed on the object plane that will measure, line weighs down can be sagging automatically, both convenient, accurate again, measurement finishes, as long as the hand rest line weighs down, soft vertical line will shrink the rotating disk that enters in the housing automatically, line weighs down to be put into magnet that groove will be positioned at housing and holds with housing and combine regularly, its volume is little, carries with extremely easy to use, can also be according to length, the size of measuring thing, spreading or shorten soft vertical line behind the housing of outwarding winding can use by being wrapped in clockwise on the rotating disk.

Claims

1, the pedal line that has the automatic deploying and retracting structure comprises soft vertical line (5), in the wired bob of an end bolt (9) of soft vertical line (5); It is characterized in that: the flexible cord centring ring (6) of described soft vertical line (5) other end through wearing is wrapped in rotating disk (2) periphery, rotating disk (2) has an inner chamber and is provided with the wind spring that resets (4), rotating disk (2) is positioned at by upper shell and the equipped housing (1) that constitutes of lower house, the lower house bottom surface is shaped on recessed chewing, recessed the chewing of described lower house passed described rotating disk (2) bottom through-hole and is connected described wind spring (4) one terminations that reset, and flexible cord centring ring (6) is fastened on upper shell and lower house joint portion.

2, the pedal line with automatic deploying and retracting structure according to claim 1 is characterized in that: described rotating disk (2) top is connected with screens lid (3).

3, the pedal line with automatic deploying and retracting structure according to claim 1 and 2, it is characterized in that: described upper shell and lower house embedding hoop have magnet (10), and the upper shell of corresponding magnet (10) outer end and lower house joint portion are shaped on can put the groove that line weighs down (9).

4, the pedal line with automatic deploying and retracting structure according to claim 3, it is characterized in that: described lower house bottom surface also is fixed with first reference column (71) and second reference column (72) that is used to overlap soft vertical line (5), is positioned on the soft vertical line (5) between described flexible cord centring ring (6) and the line bob (9) to be equipped with card pearl (8).

5, the pedal line with automatic deploying and retracting structure according to claim 4 is characterized in that: it is fixing through securing member (12) that described upper shell and lower house are provided with screw pilot hole (11).