CN102196921A

CN102196921A - Compass

Info

Publication number: CN102196921A
Application number: CN200980142101XA
Authority: CN
Inventors: O·泽利希
Original assignee: Draw Tec GmbH and Co KG
Current assignee: Draw Tec GmbH and Co KG
Priority date: 2008-10-22
Filing date: 2009-10-13
Publication date: 2011-09-21
Anticipated expiration: 2029-10-13
Also published as: WO2010045920A1; DE102008052648B3; CN102196921B; EP2337691A1; EP2337691B1

Abstract

The present invention relates to a compass, having a compass head and two compass legs which are arranged thereon and connected to each other in an articulating manner, further having a locking apparatus which comprises a movable slide (6, 20, 22, 30), which can be displaced between a first position in which a movement of the compass legs (3, 4, 27, 35) is possible and a second position in which the compass legs (3, 4, 27, 35) are blocked, and wherein the slide (6, 20, 22, 30) is arranged on one of the compass legs (4, 27, 35) and can be displaced along a guide.

Description

Compasses

Technical field

The present invention relates to a kind of compasses, described compasses have a compasses head, two compass leg that is hinged and locking devices that are arranged on the described compasses head, described locking device comprises movable sliding part, described sliding part can move between the primary importance and the second place, compass leg described in the described primary importance can move and at compass leg described in the described second place by locking.

Background technology

This compasses do not have and are used for middle wheel shaft that compasses are regulated.Replace, the articulated section in the compasses head is mainly formed by one or two nut bolt, and wherein compasses are configured to make two compass legs synchronously to move.A kind of compasses with unique nut bolt have been described in DE 27 33 978 A1.For example disclosed among the DE 7244964U, in the compasses with two nut bolts, compass leg interconnects by intermeshing tooth usually.Wherein compass leg is equipped with the tooth portion of circular arc in the zone of compasses head.Because in this compasses, there is not the middle wheel shaft that is used to regulate, thus stop compass leg non-hope adjusting and during drawing, make compass leg remain on that needed clamping force only works in its position between compasses head and compass leg.In traditional compasses, this clamping force, and can not or be difficult to readjusted after this by given in advance at production period.Yet if overcome this clamping force during drawing, the radius of compasses is changed in undesirable mode.Especially this problem can occur when on a leg extension bar being housed, this is because owing to extension bar increases lever the torque that is produced is enlarged markedly.

Propose in order to overcome this shortcoming, a governor motion is set in compasses head.Disclose a kind of compasses in DE 2 246321A, these compasses have the device that is used for accurately regulating compass leg, and this device has a spring so that drive pinion is applied pretightning force.Similarly, disclose a kind of compasses in DE 38 36 682 C1, these compasses have fixture, and this fixture for example is designed to clamp and acts on drive pinion or adjust on the wheel, with this drive pinion or adjust wheel and lock in the mode that can get loose.DE 33 19 73A relate to a kind of compasses, wherein are provided with a circle wedge in the zone of compasses head, and this circle wedge is directed in the groove of wedge shape, and can should justify wedge and be clamped on the compass leg by operating a screw element.Yet this known compasses that have governor motion in compasses head have following shortcoming: complex structure and manufacturing cost height.

Summary of the invention

Therefore, the objective of the invention is, a kind of compasses that do not have middle wheel shaft are provided, these compasses can be realized locking and simple structure and then low cost of manufacture.

In order to achieve this end, for the compasses of the described type of beginning, propose according to the present invention: be furnished with described sliding part on the compass leg in described compass leg, described sliding part can move along a guide part.

Compare this sliding part simple structure and low cost of manufacture with labyrinth well known in the prior art.Also can be used to draw than long radius (circle) according to compasses of the present invention, and can not change described radius.Similarly, extension bar can be installed.

Propose for compasses according to the present invention, sliding part is arranged on the compass leg and can moves along guide part.Can make compasses transform to non-lock position from the lock position simply by move sliding part along guide part, can not change radius in the lock position at this.

An improvement scheme according to the present invention can propose, guide part comprises groove or crack portion, displaceably be furnished with the lug boss of respective complementary (gegengleich) in this groove or crack portion, wherein this lug boss is arranged on the sliding part or is arranged on the compass leg.At this, guide part can extend substantially parallel with described compass leg, perhaps extends obliquely with respect to described compass leg, perhaps extends along a circular trace.By this guide part---this guide part comprises the lug boss of groove or crack portion and movable guiding in this groove or crack portion, can especially easily carry out in lock position and the not conversion between the lock position.

A kind of flexible program of compasses can propose according to the present invention, and sliding part surrounds compass leg at least in part.At this, sliding part can have substantially and is the cross section of U-shaped, and the lateral areas section of this sliding part is directed on opposed of compass leg.In being designed to such sliding part, obtain the direction of motion by compass leg, on this compass leg at the guided outside sliding part.

Can propose within the scope of the invention, described locking device has first locking member that is arranged on the sliding part, described first locking member be arranged in the second locking member acting in conjunction on compass leg and/or the compasses head to produce shape sealed (Formschluss).Particularly, first locking member or second locking member can have breach, can insert the lug boss of the respective design of another locking member in described breach.Can propose under the different open-angles and then locked under different radiuses in order to make according to compasses of the present invention, first locking member or second locking member have a plurality of breach.

A kind of improvement project of the present invention proposes, and has the eyelet that is designed to elongated hole according to the sliding part of compasses of the present invention, by this eyelet sliding part is remained on the compasses head.This eyelet is used as the anti-lost structure of sliding part simultaneously.

Can have tooth portion according to compasses of the present invention, two compass legs intercouple by this tooth portion.Cause being synchronized with the movement of two compass legs by this tooth portion.

The following embodiment of compasses of the present invention also is feasible: wherein set a sliding part for each compass leg.

A kind of flexible program according to compasses of the present invention proposes, locking device has first locking member that is arranged on the sliding part, this first locking member be arranged in the second locking member acting in conjunction on compass leg and/or the compasses head to produce force closure (Kraftschluss).Preferably, first locking member or second locking member have lozenges, and this lozenges can clamp against the mating surface of another locking member, to produce described force closure.

Another optional flexible program according to the present invention can propose, and the locking member with lozenges is directed on the adjusting leading screw and can be moved by rotating the adjusting leading screw.At this, regulate leading screw and can be arranged in the crack portion of compass leg.Also thinkablely be, regulating two lozenges of guiding on the leading screw, these lozenges can abut on opposed of compass leg.

Another optional structural scheme of the present invention proposes, locking device has first locking member that is arranged on the sliding part, this first locking member can be by regulating guide screw movement and having one side, wherein this first locking member be arranged in the second locking member acting in conjunction on the compass leg to produce force closure.

Description of drawings

By embodiment with reference to annexed drawings set forth other advantages of the present invention and details.Accompanying drawing is schematic diagram and illustrates:

Figure 1A is the perspective views of compasses according to the present invention in unlocked position;

Figure 1B is the front view of the compasses among Figure 1A;

Fig. 1 C is the cutaway views of the compasses shown in Figure 1B along the I-I line;

Fig. 1 D is the enlarged drawing of compasses head;

Fig. 2 A is the perspective view under these compasses are in the lock state;

Fig. 2 B is the front view of the compasses of Fig. 2 A;

Fig. 2 C is the cutaway view along the II-II line of Fig. 2 B;

Fig. 2 D is the partial enlarged drawings of compasses shown in Fig. 2 C in the compasses head zone;

Fig. 3 A and 3B are the perspective views of compasses head;

Fig. 3 C is the front view that the part of the compasses head of Fig. 3 A is cut open;

Fig. 3 D is the side view that the part of the compasses head of Fig. 3 A is cut open;

Fig. 3 E is the cutaway view of the compasses head of Fig. 3 D along the III-III line;

Fig. 3 F is the partial enlarged drawing of the compasses head of Fig. 3 A;

Fig. 4 A is the perspective view of compass leg;

Fig. 4 B is the front view of the compass leg of Fig. 4 A;

Fig. 4 C is the partial enlarged drawing of the compass leg of Fig. 4 A;

Fig. 5 A is the perspective view of sliding part;

Fig. 5 B is the front view of sliding part shown in Fig. 5 A;

Fig. 5 C is the side view of sliding part shown in Fig. 5 A;

Fig. 5 D is the rearview of sliding part shown in Fig. 5 A;

Fig. 5 E is another perspective view of the sliding part of Fig. 5 A;

Fig. 5 F is another perspective view of the sliding part of Fig. 5 A;

Fig. 5 G is the partial enlarged drawing of sliding part shown in Fig. 5 A;

Fig. 5 H is the partial enlarged drawing of sliding part shown in Fig. 5 C;

Fig. 6 A is the perspective view of the sliding part of another embodiment;

Fig. 6 B is another perspective view of sliding part shown in Fig. 6 A;

Fig. 6 C is another perspective view of sliding part shown in Fig. 6 A;

Fig. 6 D is the partial enlarged drawing of the sliding part of Fig. 6 C;

Fig. 6 E is the front view of sliding part shown in Fig. 6 A;

Fig. 6 F is that sliding part shown in Fig. 6 E is along the cutaway view of VI-VI line;

Fig. 7 A is another embodiment according to compasses of the present invention;

Fig. 7 B is that compasses shown in Fig. 7 A are along the cutaway view of VII-VII line;

Fig. 8 A is compasses shown in Fig. 7 A under being in the lock state;

Fig. 8 B is that compasses shown in Fig. 8 A are along the cutaway view of VIII-VIII line;

Fig. 8 C is the partial enlarged drawing of compasses shown in Fig. 8 B;

Fig. 8 D is the enlarged drawing of compasses in the locking device zone of Fig. 8 A;

Fig. 8 E is the compasses partial view that is similar to Fig. 8 C, but wherein compasses are in unlocked state;

Fig. 9 A to 9C is the perspective view of the sliding part of compasses shown in Fig. 8 A;

Figure 10 A is the perspective view of a compass leg of the compasses of Fig. 8 A;

Figure 10 B is the side view of compass leg shown in Figure 10 A;

Figure 10 C is the partial enlarged drawing of the compass leg of Figure 10 A;

Figure 11 A is the front view according to another embodiment of compasses of the present invention;

Figure 11 B is the perspective view of compasses shown in Figure 11 A;

Figure 11 C is the cutaway view of compasses shown in Figure 11 A;

Figure 11 D is the enlarged drawings of the compasses shown in Figure 11 D in the locking device zone;

Figure 11 E is the enlarged drawing of compasses in the locking device zone under being in the lock state;

Figure 12 is the perspective view of the sliding part of compasses shown in Figure 11 A.

The specific embodiment

Compasses 1 shown in Figure 1A to 1D mainly comprise compasses head 2, two compass leg that is hinged 3,4 and locking devices 5 that are arranged on this compasses head.Locking device 5 comprises movable slide 6, and this sliding part can move between the primary importance and the second place, and

compass leg

3,4 can move in this primary importance, and in this second

place compass leg

3,4 by locking.Sliding part 6 is arranged on the compass leg 4 and can moves along a guide part.As among Fig. 1 D the clearest see, compasses head 2 has a central gap, admits

compass leg

3,4 in this central gap, described compass leg is hinged fixing by a nut bolt 7.Sliding part 6 can move along the longitudinal direction of compass leg 4, and a section of sliding part 6 is positioned partially in the breach of compasses head 2.

Fig. 2 A, 2B and 2C are illustrated in the compasses 1 in the latched position.Fig. 2 A is the perspective view of compasses 1, and Fig. 2 B is the front view of the compasses 1 in latched position, and Fig. 2 C is the cutaway view that compasses 1 are cut open along the II-II line among Fig. 2 B, and Fig. 2 D illustrates the partial enlarged drawing of compasses shown in Fig. 2 C in the compasses head zone.With among Figure 1A to 1D differently, sliding part 6 is in the lock position, sliding part stops

compass leg

3,4 to rotate or motion in this lock position.Sliding part 6 is moved to compasses head 2 places and stops rotational motion along guide part.

Fig. 3 A to 3F illustrates compasses head 2.Fig. 3 A and 3B are perspective views, and Fig. 3 C is the front view cut open of part, and Fig. 3 D is the side view that part is cut open, Fig. 3 E be compasses head 2 shown in Fig. 3 D along the cutaway view of III-III line, Fig. 3 F is the partial enlarged drawing of the compasses head 2 of Fig. 3 A.The compasses head 2 that is designed to fork-shaped has screwed hole 8,9 by nut bolt 7

compass leg

3,4 is fixed on the compasses head 2.On the inboard of compasses head 2, this compasses head has a locking member that is designed to breach 10 in gap regions, can be inserted in the lug boss of the locking member that forms on the sliding part in this breach.A plurality of independent breach can be set in other form of implementation.

Fig. 4 A to 4C illustrates compass leg 4.Fig. 4 A is a perspective view, and Fig. 4 B is a front view, and Fig. 4 C is the enlarged drawing of compass leg in the compasses head zone.Place, end below being positioned in Fig. 4 A, compass leg 4 has a receptacle 11 that is used for pin, pin, pencil-lead or analog.On the end of opposite (relatively), compass leg 4 has sector gear 12, the corresponding sector gear acting in conjunction of this sector gear 12 and another compass leg 3, thus these sector gears roll on each other during compasses are opened or close up.Make the synchronized movement of

compass leg

3,4 by sector gear 12, this is because the adjusting that a compass leg is carried out causes another compass leg corresponding synchronous motion.As among Fig. 4 C the clearest see, compass leg 4 has groove 13 on a side, sliding part can move along this groove.

Fig. 5 A to 5H illustrates the different view of sliding part 6.As seen, sliding part 6 has eyelet 14 in the front view of Fig. 5 B, and this eyelet is designed to elongated hole and is passed by nut bolt 7.Eyelet 14 stops sliding part 6 to get loose from compasses.As seen, sliding part 6 has the basic U-shaped cross-section that is in Fig. 5 F, and the

lateral areas section

15,16 of this sliding part is approximately perpendicular to centre portion 17 ground and extends.Under the state of having assembled,

lateral areas section

15,16 is directed on opposed of compass leg 4.The guide part that is designed to groove 13 of compass leg 4 extends along the longitudinal direction.Sliding part 6 has lug boss 18 on the side within it, and this lug boss is directed in groove 13.On the opposite outside of sliding part 6, this sliding part has lug boss 19, can be clear that this lug boss in Fig. 5 E, and this lug boss can insert in the breach 10 of compasses head 2.

If sliding part 6 is in the position of a non-locking---this is shown in Figure 1A to 1D, and then

compass leg

3,4 can move.If sliding part 6 moves to compasses head 2 along guide part, then the lug boss 19 of sliding part 6 joins in the breach 10 of compasses head 2 and stops the motion of compass leg 3,4.Realized locking by shape is sealed in this embodiment.

Fig. 6 A to 6F illustrates the sliding part of second embodiment of compasses.With first embodiment consistently, sliding part 20 has basic for the cross section of U-shaped and have

lateral areas section

15,16 and eyelet 14.Shown in Fig. 6 D, sliding part 20 its outside on have the locking member that is designed to lozenges 21, this locking member is being between compass leg and the compasses head under the assembled state, and be arranged in locking member acting in conjunction on the compass leg, that be designed to mating surface.If sliding part 20 moves towards compasses head, then sliding part 20 applies a power and attempt by its lozenges 21 to compass leg and compasses head and compass leg and compasses head are forced into are separated from each other.Yet because compasses head and compass leg interconnect by nut bolt, so only increased compass leg, the static friction between sliding part and the compasses head has realized clamping and locking thus.

Fig. 7 to Figure 10 illustrates the third embodiment of the present invention, and in the 3rd embodiment, the locking member with lozenges is directed on an adjusting leading screw.

Fig. 7 A is the front view of compasses, and Fig. 7 B is the view that compasses are cut open along the VII-VII line shown in Fig. 7 A.Fig. 8 A is and view like Fig. 7 category-A, and Fig. 8 B illustrates along the cutaway view of the VIII-VIII line among Fig. 8 A, and Fig. 8 C illustrates the partial enlarged drawing of Fig. 8 B in the compasses head zone.Sliding part 22 has a locking member that is designed to lozenges 28, and sliding part 22 has screwed hole 23, regulates leading screw 24 and passes this screwed hole.Regulating wheel 25 with regulate leading screw 24 with not in relative rotation mode be connected.Regulating leading screw 24 and sliding part 22 is arranged in the crack portion 26 of compass leg 27.The front of sliding part 22 on a side of compasses head, sliding part 22 has the lug boss 28 of wedge shape, this lug boss can move between compasses head 2 and compass leg 27, to realize locking.

At the compasses that are in shown in Fig. 8 E under the unlocked state.Sliding part 22 roughly is positioned at the central authorities that regulate leading screw 24, and the wedge shape lug boss 28 of sliding part 22 is in outside the breach that is formed between compasses head 2 and the compass leg 27.Compasses under Fig. 8 C and 8D illustrate and be in the lock state, the wedge shape lug boss 28 of these compasses move and are in the inside of compasses head 2 along guide part, make this compasses head and compass leg 27 clamped.

Fig. 9 A to 9C is the perspective view of sliding part 22 together with its wedge shape lug boss 28.

Figure 10 A to 10C illustrates compass leg 27, and this compass leg has the breach 29 that is used for sliding part 22.

Figure 11 A to 11D illustrates another embodiment of compasses 36.Ground similar to the above embodiments, compasses 36 have sliding part 30, and this sliding part can move along guide part by regulating leading screw 31.Being complementary of sliding part 30 towards the face 32 of compasses head shape with the opposed clamping area 33 of compasses head.Clamping area 33 is arranged in the pivot center 34 concentric modes of relative compass leg 35.At the sliding part 30 in unlocked position shown in Figure 11 D, by rotate regulating leading screw 31 sliding part 30 is moved towards compasses head, till this sliding part is in the position shown in Figure 11 E.Face 32 and clamping area 33 planar ground are close to mutually, realize the locking of compass leg 35 with respect to the hope of compasses head 2 thus.Figure 12 illustrates the perspective view of sliding part 30.

Claims

1. compasses, described compasses have a compasses head, two compass leg that is hinged and locking devices that are arranged on the described compasses head, described locking device comprises movable sliding part, described sliding part can move between the primary importance and the second place, compass leg described in the described primary importance can move and at compass leg described in the described second place by locking, it is characterized in that, be furnished with described sliding part (6,20,22,30) on the compass leg (4,27,35) in described compass leg, described sliding part can move along a guide part.

2. compasses according to claim 1, it is characterized in that, described guide part comprises groove (13) or crack portion, displaceably be furnished with the lug boss (18) of respective complementary in described groove (13) or crack portion, wherein said lug boss (18) is arranged in described sliding part (6,20) and goes up or be arranged on the compass leg.

3. compasses according to claim 1 and 2 is characterized in that, described guide part and described compass leg (4,27,35) extend substantially parallel, and perhaps described guide part extends obliquely with respect to compass leg, and perhaps described guide part extends along a circular trace.

4. compasses according to claim 1 is characterized in that, described sliding part (6,20) surrounds a compass leg (4) at least in part.

5. compasses according to claim 4 is characterized in that, described sliding part (6,20) has substantially and is the cross section of U-shaped, and the lateral areas section of described sliding part (15,16) is directed on opposed of described compass leg (4).

6. each described compasses in requiring according to aforesaid right, it is characterized in that, described locking device has first locking member that is arranged on the described sliding part (6,20,22,30), and described first locking member is sealed to produce shape with the second locking member acting in conjunction that is arranged on described compass leg (4,27,35) and/or the compasses head.

7. compasses according to claim 6 is characterized in that, described first locking member or second locking member have breach (10), can insert the lug boss (19) of the respective design of another described locking member in described breach.

8. compasses according to claim 7 is characterized in that, described first locking member or second locking member have a plurality of breach (10) in order to lock under different open-angles.

9. each described compasses in requiring according to aforesaid right is characterized in that described sliding part (6,20) has the eyelet (14) that is designed to elongated hole, by described eyelet described sliding part is remained on the described compasses head (2).

10. each described compasses in requiring according to aforesaid right is characterized in that described two compass legs (3,4,27,35) preferably intercouple by tooth portion (12).

11. according to each described compasses in the claim 1 to 9, it is characterized in that, for each compass leg sets a sliding part.

12. according to each described compasses in the aforesaid right requirement, it is characterized in that, described locking device has first locking member that is arranged on the described sliding part (6,20,22,30), described first locking member be arranged in the second locking member acting in conjunction on described compass leg (3,4,27,35) and/or the described compasses head to produce force closure.

13. compasses according to claim 12 is characterized in that, described first locking member or second locking member have lozenges (21), and described lozenges can clamp against the mating surface of another described locking member.

14. according to claim 12 or 13 described compasses, it is characterized in that, sliding part (22,30) with described lozenges is directed on an adjusting leading screw (24,31), can move the sliding part that this has described lozenges by rotating described adjusting leading screw (29,31).

15. compasses according to claim 14 is characterized in that, described adjusting leading screw (24,31) is arranged in the crack portion of described compass leg (27,35).

16., it is characterized in that described sliding part (22) has the locking member that is designed to wedge shape lug boss (28) according to claim 14 or 15 described compasses, described locking member can be clamped between described compasses head (2) and the described compass leg (27).

17., it is characterized in that described sliding part (30) has one side (32) according to claim 14 or 15 described compasses, this face can be pressed on the opposed clamping area (33) of described compasses head (2).

18. compasses according to claim 17 is characterized in that, the clamping area (33) of described compasses head (2) is designed to concentric with the pivot center (34) of described compass leg (35) basically.