KR200485611Y1 - safety compass - Google Patents

Abstract

The present invention relates to a safety compass of a new structure capable of preventing a safety accident from occurring due to a pin provided at an end of a first or second leg member.
The safety compass according to the present invention can insert the pin 30 into the first leg member 10 when not in use, thereby effectively preventing the user from being inadvertently stuck on the pin 30 There are advantages to be able to.

Description

Safety compass

The present invention relates to a safety compass of a new structure capable of preventing a safety accident from occurring due to a pin provided at an end of a first or second leg member.

In general, a compass used for drawing a circle is constituted by first and second leg members 10 and 20 which are rotatably coupled to each other, as shown in Fig.

At this time, a support member 40 is provided at the upper ends of the first and second leg members 10 and 20, and the upper ends of the first and second leg members 10 and 20 are connected to the support member 40 And is hinged to be rotatable in the lateral direction.

A pin 30 extending downward is provided at a lower end of the first leg member 10 and a pin or a writing instrument 21 extending downward is provided at a lower end of the second leg member 20.

When the compass is rotated about the pin 30 after fixing the pin 30 provided on the first leg member 10 to the bottom surface of the second leg member 20, A circle is drawn by the pin or the writing instrument 21. [

The structure and use of such a compass is described in detail in a number of precedent documents including registration utility model No. 20-0249153, and a detailed description thereof will be omitted.

However, such a compass has a problem in that a pin 30 extending downward is fixed to the lower ends of the first and second leg members 10 and 20 so that the compass may be stuck to the pin 30 by mistake of the user .

Therefore, there is a need for a new method to solve such a problem.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a safety compass of a new structure that prevents a safety accident from occurring due to a pin provided at an end of a leg member.

In order to achieve the above-mentioned object, the present invention is characterized in that it includes first and second leg members (10, 20) rotatably coupled at the upper end thereof, And a pin or writing instrument 21 extending downward from the lower end of the second leg member 20. The pin 30 is connected to the first or second leg member 20, 10 and 20 so that the pin 30 can be protruded to the lower side of the first or second leg member 10 or 20 if necessary. / RTI >

According to another feature of the present invention, the pin 30 is slidably coupled to the first or second leg member 10, 20 but not rotated, and is screwed into the periphery of the pin 30 And a nut member (50) rotatably coupled to the first or second leg member (10, 20).

According to another aspect of the present invention, an elastic member 60 connected to the pin 30 and elastically pressing the pins 30 to be received in the first or second leg members 10, And a locking device 70 provided on the first or second leg member 10 or 20 for fixing the pin 30 in a protruded state to the lower side of the first or second leg member 10, The safety compass is further provided with a safety compass.

According to another feature of the present invention, the apparatus further comprises a support member (40) to which the upper ends of the first and second leg members (10, 20) are rotatably engaged, and the first or second leg member And a locking device (70) mounted on the first and second locking parts (20) so that the pin (30) can be fixed in a state protruding downward according to a user's operation. The locking device (70) And is rotatably coupled to the leg members 10 and 20 and is coupled to the pin 30 protruding to the lower side of the first or second leg member 10 and 20 at one end thereof, A fixing member 71 formed with a locking part 71a for fixing the leg member 10 and 20 so as not to be accommodated in the leg member 10 and 20, An elastic member 60 elastically pressing the elastic member 60 so as to release the engagement, and an elastic member 60 provided on one side of the support member 40 and connected to the fixing member 71, And an operation lever 73 for allowing the hooking portion 71a to be engaged with the pin 30 protruding to the lower side of the first or second leg member 10 or 20 .

The safety compass according to the present invention can insert the pin 30 into the first leg member 10 when not in use, thereby effectively preventing the user from being inadvertently stuck on the pin 30 There are advantages to be able to.

1 is a reference view showing a conventional compass,
2 is a front sectional view showing a safety compass according to the present invention,
3 is a plan sectional view showing a cross-section taken along the line AA in Fig. 2,
4 is a reference diagram for explaining the operation of the safety compass according to the present invention,
5 is a front sectional view showing a second embodiment of the safety compass according to the present invention,
FIG. 6 is an enlarged view showing a main portion of a second embodiment of the safety compass according to the present invention;
7 is a reference diagram for explaining the operation of the second embodiment of the safety compass according to the present invention;
8 is a front sectional view showing a third embodiment of the safety compass according to the present invention,
9 is a reference diagram for explaining the operation of the third embodiment of the safety compass according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIGS. 2 to 4 illustrate a safety compass according to the present invention, in which first and second leg members 10 and 20 are rotatably coupled at their upper ends, And a writing instrument 21 extending downward is provided at the lower end of the second leg member 20, as in the conventional art.

At this time, a support member 40 is provided at the upper ends of the first and second leg members 10 and 20, and the upper ends of the first and second leg members 10 and 20 are connected to the support member 40 And is hinged to be rotatable in the lateral direction.

Accordingly, the user can draw the circle by rotating the entire safety compass while holding the support member 40 by hand.

According to the present invention, the pin 30 is detachably coupled to the first leg member 10 downwardly, and a nut member 50 is screwed to the outside of the pin 30.

In detail, the first leg member 10 has a coupling hole 11 opened downward, and the pin 30 is slidable in the coupling hole 11 but not rotated .

3, the coupling hole 11 is configured to have a rectangular cross-section, and a rectangular head portion 31 corresponding to the coupling hole 11 is formed at an upper end of the pin 30, And the head portion 31 is slidably engaged with the engaging hole 11. As shown in Fig.

In addition, a thread 32 is formed on the peripheral surface of the fin 30.

The nut member 50 is formed in a cylindrical shape extending in the up and down direction and has an inner circumferential surface formed with threads 51 screwed to the circumferential surface of the pin 30, And is rotatably coupled to the lower end.

2, when the user rotates the nut member 50 in the forward direction or the reverse direction, the nut member 50 and the pin 30 are rotated by the action of the threads 32 and 51, The pin 30 protrudes to the lower end of the first leg member 10 or is inserted into the first leg member 10 as shown in Fig.

When the safety compass is not in use, the pin 30 can be inserted into the first leg member 10, thereby effectively preventing the user from being inadvertently stuck on the pin 30 There is an advantage.

5 to 7 show a second embodiment according to the present invention in which a long hole 12 communicating with the coupling hole 11 is formed on the side surface of the first leg member 10 so as to extend in the vertical direction do.

The pin 30 is slidably coupled to the coupling hole 11 and is provided at one side thereof with a handle 33 extending in the lateral direction of the first leg member 10 through the long hole 12.

An elastic member 60 connected to the pin 30 and elastically pressing the pin 30 to be received in the first leg member 10 is provided in the coupling hole 11 .

A flange 34 is provided at an intermediate portion of the pin 30 and the elastic member 60 is provided at an outer side of the pin 30 and an upper end of the elastic member 60 is connected to a lower surface of the flange 34 A compression coil spring is used to press the flange portion 34 upward.

The first leg member 10 is provided with a locking device 70 that fixes the pin 30 in a state protruded to the lower side of the first leg member 10.

A through hole 13 is formed on the peripheral surface of the first leg member 10 and connected to the coupling hole 11 at an upper portion of the slot 12. The locking device 70 is inserted into the through hole 13 And a spring 72 connected to the fixing member 71. The fixing member 71 is rotatably hinged to the inside of the fixing member 71,

The fixing member 71 is provided at its one end with a latching portion 71a which is hooked on the upper end of the flange portion 34 of the pin 30 and at the other end with a push button And is rotatably coupled to the inside of the coupling hole 11 by a pin 30 passing through the intermediate portion.

6, when the pin 30 is lowered and protruded to the lower side of the first leg member 10, the engaging portion 71a is engaged with the flange portion (not shown) 34 so that the pin 30 is prevented from rising upward.

The spring 72 uses a torsion spring that elastically urges the engaging portion 71a of the fixing member 71 to protrude to the inside of the engaging hole 11. [

Therefore, as shown in Fig. 7, the pin 30 is raised by the elasticity of the elastic member 60 and stored in the first leg member 10 as usual.

6, when the user pushes the knob 33 downward, the elastic member 60 is compressed and the end of the pin 30 protrudes to the lower side of the first leg member 10 At this time, the locking portion 71a of the locking device 70 is caught by the flange portion 34 and fixed so that the pin 30 is not raised.

7, when the user presses the push button 71b, the locking portion 70a is released while the locking portion 71a is lifted, whereby the elastic member 60 The pin 30 is lifted so as to be accommodated in the first leg member 10. [0064] As shown in Fig.

The safety compass having such a configuration can control the pin 30 to project and retract at one-touch, which is advantageous in that it is more convenient to use.

8 and 9 show another feature according to the present invention, in which the pin 30 is slidably engaged with the coupling hole 11. As shown in Fig.

The first leg member 10 is provided with a locking device 70 which can be fixed in a state where the pin 30 protrudes downward according to a user's operation.

The locking device 70 is rotatably coupled to the first leg member 10 and is coupled to a pin 30 protruded to the lower side of the first leg member 10 at one end thereof, A fixing member 71 provided with a locking portion 71a for fixing the locking member 71 so as not to be accommodated in the leg member 10 and a locking member 71 connected to the locking member 71, A spring 72 provided on one side of the supporting member 40 and connected to the fixing member 71 to be engaged with the first leg member 71a when the user operates the locking member 71a, And an operation lever 73 for engaging with the pin 30 protruded to the lower side of the base 10.

At this time, a space portion 11a is formed at one side of the coupling hole 11 of the first leg member 10, and the fixing member 71 is rotatably coupled to the inside of the space portion 11a.

The pin 30 is formed with a latching protrusion 35 to which the latching portion 71a of the fixing member 71 is caught so that the pin 30 is lowered to protrude downward from the first leg member 10 The engaging portion 71a is engaged with the engaging protrusion 35 so that the pin 30 is engaged with the engaging protrusion 35 of the first leg member 10, Fix it so that it can not be stored inside.

The spring 72 is resiliently biased such that the engaging portion 71a of the fixing member 71 is pivoted to the outside of the engaging hole 11 so that the engagement between the engaging portion 71a and the engaging jaw 35 is released A torsion spring for pressurizing is used.

The operation lever 73 is rotatably coupled to one side of the support member 40 and is connected to the fixing member 71 through a wire 74 so that when the user presses the fixing lever 71, 71a protrude to the inside of the engaging hole 11 to engage with the engaging protrusions 35 of the pin 30.

At this time, the operation lever 73 is provided at a position where the user's hand is placed when the user holds the support member 40 on the support member 40, so that the user can press the support member 40 to use the compass. The operation lever 73 is automatically pressed.

The wire 74 interconnects the operation lever 73 and the fixing member 71 through a through hole 14 formed in the first leg member 10. [

8, the pin 30 is slid downward by its own weight, and the lower end of the pin 30 slides downward by the weight of the first leg member 10, As shown in Fig.

At this time, when the user holds the support member 40 to use the compass, the operation lever 73 is pushed and rotated as shown in Fig. 9, whereby the fixing member 71 is rotated and fixed Since the pin 30 is fixed so as not to be housed inside the first leg member 10 by engaging the engaging portion 71a of the member 71 with the engaging jaw 35 of the pin 30, Can be used.

When the use of the compass is completed and the user releases the hand pressing the operation lever 73, the fixing member 71 is rotated by the spring 72 to release the fixing of the pin 30, The pin 30 can be inserted into the first leg member 10 freely.

As shown in FIG. 9, the safety compass having the above configuration is configured such that the pin 30 is fixed only when the user depresses the operation lever 73 to use the compass, and when not in use, Likewise, by releasing the pin 30, the pin 30 is inserted into the first leg member 10 when the user accidentally pierces the body or other parts of the person with the pin 30. [ So that the wound does not come out.

Therefore, when the safety compass is not used, there is a safety advantage over the first and second embodiments, in which the user must operate the pin 30 to be inserted into the first leg member 10.

Although the pin 30 is provided only in the first leg member 10 and the second leg member 20 is provided with the writing instrument 21 instead of the pin 30, The first leg member 10 and the second leg member 20 may be provided with the pin 30 and the nut member 50 and the locking device 70 as described above.

10. First leg member 20. Second leg member
30. Pin 40. Support member
50. Nut member 60. Elastic member
70. Locking device

Claims (4)

The first and second leg members (10, 20) pivotally coupled at an upper end thereof,
A pin 30 extending downward is provided at a lower end of the first leg member 10,
A compass having a pin or writing tool (21) extended downward from the lower end of the second leg member (20)
The pin (30) is coupled to the first or second leg member (10, 20) so that the pin (30)
A long hole 12 is formed in the side surface of the first or second leg member 10 or 20 in the vertical direction so as to communicate with the coupling hole 11 into which the pin 30 is inserted, A through hole 13 is formed so as to be connected to the coupling hole 11,
One end is coupled to the pin 30 through the slot 12 and the other end is provided with a handle 33 protruding laterally through the slot 12,
An elastic member (60) elastically urging the pin (30) inside the engagement hole (11) so as to be accommodated in the first or second leg member (10, 20)
A locking member provided in the through hole so as to fix the pin in the first or second leg member to protrude downward from the first or second leg member, (70),
The locking device (70)
And one end of which is formed with a latching portion 71a so as to be hooked on the upper end of the flange portion 34 of the pin 30 and the other end of which is provided with a push button 71b,
A spring that is connected to the fixing member 71 and elastically urges the engaging portion 71a to protrude to the inside of the engaging hole 11 so that the engaging portion 71a and the pin 30 are engaged and disengaged, 72). ≪ / RTI > delete delete delete

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