CN2614930Y

CN2614930Y - Multifunction triangular compass

Info

Publication number: CN2614930Y
Application number: CN 03225121
Authority: CN
Inventors: 陈志豪; 胡璇玑
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-04-14
Filing date: 2003-04-14
Publication date: 2004-05-12
Anticipated expiration: 2013-04-14

Abstract

The utility model discloses multifunctional three-legged dividers which comprise a left socketed leg, a right socketed leg and a connecting and supporting device, wherein the left and right socketed legs which are of the same length are hinge connected with the supporting device. A mid-point positioning stick of an angular separation between the equal partitions vertically inserts into the hinge supporting device and penetrates a positioning slide block, wherein the mid-point positioning stick is adjustable up and down. The positioning slide block capable of sliding along the mid- point positioning stick is hinge connected with two equal-sized supporting arms, the other end of the supporting arms are hinge connected with the corresponding positions of the left and right socketed legs. The multifunctional three-legged dividers are capable of finding the mid-point of the being measured object quickly and accurately and measuring the diameter and thickness of a bottle-shaped bottom. The utility model has the advantages of simple structure, easy production, using convenience, small weight and bulk and taking convenience, further it adapts to use by students, workers, and people from all social status.

Description

Multi-functional triangular compass

Technical field

The utility model relates to drawing instrument, especially a kind of multi-functional Three point compass.

Background technology

Common compasses general structure is that two rules and regulations pin connect by coupling arrangement at present, regulates two spacings of advising between the pin with screw, and this compasses only limit to draw circular pattern, function singleness.And in daily life; people can run into the problem of looking for mid point usually; for example: one section line segment, one section arcwall face, sphere, cylinder, when the point midway that find out them is made the strong point, often need be through complicated program; earlier with ruler line taking section; calculate the intermediate value data then, get once more a little and can determine point midway, it is more loaded down with trivial details to operate; accuracy is not high, and wastes time and energy.In a single day ruler does not exist, will feel simply helpless, and having no way of doing it has gone for mid point.

Summary of the invention

At the deficiencies in the prior art, the purpose of this utility model provides a kind of simple in structure, easy to operate and can seek out the multi-functional triangular compass of various line segments or object mid point quickly and accurately.

The purpose of this utility model is achieved in that a kind of multi-functional triangular compass, comprises left and right rule pin and is connected bracing or strutting arrangement, and isometric left and right rule pin is articulated on the bracing or strutting arrangement; The described hinged supporting means of the vertical insertion of mid point locating bar of angle passes a location slide block simultaneously, and can stretch up and down between one five equilibrium, the two rule pin; Described positioning sliding block can slide along the mid point locating bar, also is hinged with two isometric support arms on it, and the other end of support arm is articulated in the opposite position of left and right rule pin respectively.

Described left side rule pin and right rule pin preferably are set to collude the shape slide calliper rule, and its hook part can be inside, also can be outside.

After adopting said structure, owing to be provided with can slide up and down mid point locating bar and slide calliper rule rule pin, multi-functional triangular compass of the present utility model so not only can be worked as common compasses or divider and be used, also can off the beaten trackly look for the mid point operation, find fast, like clockwork by the mid point of profile section or object, also can measure diameter and thickness at the bottom of the ampuliform simultaneously.In addition, it also have simple in structure, making is easy, easy to operate, in light weight, volume is little, advantage such as easy to carry.

Description of drawings

Fig. 1 is the structural representation of the multi-functional triangular compass of the utility model.

Fig. 2 is the fundamental diagram of multi-functional triangular compass shown in Figure 1.

The specific embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As shown in Figure 1, multi-functional triangular compass of the present utility model mainly is made of hinged supporting means 1, positioning sliding block 2, left side rule pin 3, right rule pin 4, support arm 5 and mid point locating bar 6.Described hinged supporting means 1 and positioning sliding block 2 are all made by the cylindrical metal material that has mesopore.The isometric left side rule pin 3 and the upper end of right rule pin 4 are articulated on the described hinged supporting means 1 by two bolts 9 respectively, and such two rule pin can be adjusted its spacing according to the flexible in size ground of testee, and mounting means is simple; Isometric left side rule pin 3 and right rule pin 4 can be set to hook-shaped shape slide calliper rule, and to be convenient for measuring the mid point of three-dimensional object, two rules and regulations pin can be installed in the inside mode in hook part, also can the outside mode in hook part install, and are respectively applied for external diameter and the internal diameter of measuring object.Described mid point locating bar 6 is arranged between left side rule pin 3 and the right rule pin 4 and divides angle between them equally, its upper end is provided with one handle 12, hinged supporting means 1 is vertically inserted in the lower end, pass positioning sliding block 2 simultaneously, and can be flexible up and down along hinged supporting means 1 and positioning sliding block 2, and it can be fixed in a certain position by the lock screw 7 that screws on the hinged supporting means 1, mid point locating bar 6 can stretch up and down like this, flexible and convenient to use, also can come the height fixed point of regulated at will interfix according to the size of testee, thereby fast, find the mid point of testee exactly.Described positioning sliding block 2 also slides up and down along mid point locating bar 6 with the opening and closing of left and right rule pin 3,4, be hinged with two isometric support arms 5 by bolt 11 on it, the other end of support arm 5 is movably connected on the opposite position of left side rule pin 3 and right rule pin 4 respectively by two rivets 10, such two rules and regulations pin opening and closing freely and need not other adjusting device; Also be provided with lock screw 8 on the positioning sliding block 2 to fix the position of two rule pin 3,4, to prevent that the rule pin slides and influences the accuracy of measuring when measuring object.

As shown in Figure 2, suppose that arc AB is for needing to determine arbitrary arcwall face of point midway, earlier front end being had the left side rule pin 3 that colludes shape and right rule pin 4 is stuck in respectively on 2 of A, the B, if the position of hinged supporting means 1 is an O, slide up and down mid point locating bar 6 along hinged supporting means 1 and slide block 2, make it the lower end and arc AB intersects at a M, screw bolt 7 on the hinged supporting means 1 or the bolt 8 on the slide block 2 with fixing interfix rod 6.According to the characteristic of compasses OA=OB as can be known, then △ OAB is an isosceles triangle, and again because OM is the angular bisector of ∠ AOB, so OM also is the perpendicular bisector of line segment AB, so M is the mid point of arc AB.

Claims

1, a kind of multi-functional triangular compass comprises left and right rule pin and is connected bracing or strutting arrangement, it is characterized in that: isometric left and right rule pin (3,4) is articulated on the bracing or strutting arrangement (1); The mid point locating bar (6) of angle vertically inserts described hinged supporting means (1) between one five equilibrium, the two rule pin (3,4), passes a location slide block (2) simultaneously, and can stretch up and down; Described positioning sliding block (2) can slide along mid point locating bar (6), also is hinged with two isometric support arms (5) on it, and the other end of support arm (5) is articulated in the opposite position of left and right rule pin (3,4) respectively.

2, multi-functional triangular compass according to claim 1 is characterized in that: described left side rule pin (3) and right rule pin (4) are set to collude the shape slide calliper rule, and its hook part can be inside, also can be outside.

3, multi-functional triangular compass according to claim 1 and 2 is characterized in that: described hinged supporting means (1) is provided with the fixing described mid point locating bar (6) of lock screw (7).

4, multi-functional triangular compass according to claim 1 and 2 is characterized in that: described positioning sliding block (2) is provided with the fixing described positioning sliding block (2) of lock screw (8).