CN2196292Y

CN2196292Y - Folding map compass

Info

Publication number: CN2196292Y
Application number: CN 94209408
Authority: CN
Inventors: 张焳虎
Original assignee: CHUAN CHING MECHANICAL INDUSTRIAL Co Ltd
Current assignee: CHUAN CHING MECHANICAL INDUSTRIAL Co Ltd
Priority date: 1994-04-12
Filing date: 1994-04-12
Publication date: 1995-05-03
Anticipated expiration: 2004-04-12

Abstract

The utility model relates to a folding map north arrow, which comprises a bottom plate provided with a north arrow, wherein, the bottom plate is pivoted with a cover plate provided with an aiming seam. An aiming plate pivoted with the bottom plate is arranged on the bottom plate, a magnifier is arranged at the top of the aiming plate, and an aiming slot is arranged at the top end of the magnifier. By the movable pivoting state between the bottom plate and the cover plate, the utility model can obtain a longer measuring dimension in use. The utility model can be folded at ordinary times, and the size is reduced, so the carrying is convenient. Correct orientation can be indicated when the aiming plate is used for matching the north arrow, and a target can be found through the aiming seam, so the efficiency of the actual measurement of the orientation can be achieved.

Description

Folding map compass

The utility model relates to a kind of north arrow, particularly relates to a kind of folding chart north arrow that the space is easy to carry about with one that dwindles.

The prosperity and progress of society, standard of living improves day by day, people are for the pursuit diversification especially of stress-relieving activity, and out of doors in the activity, mountain-climbing is most economical, be of value to most physically and mentally healthy, also be liked by general people, when when being engaged in expedition, often must prepare some seeks survival, the equipment of emergency, the map north arrow is exactly indispensable instrument, we usually confirm orientation, present place with map and map north arrow in the remote mountains, reach and seek the target of advancing, see also shown in Figure 1, it is map north arrow in the past, it comprises a rectangle chi 1, the delineation of rectangle chi 1 both sides has yardstick 2, establish a north arrow 3 at its lower face place, and install a magnifier 4 in rectangle chi 1 pre-determined bit, when in use, can only be in the orientation of measuring the destination on the map and by the yardstick on the rectangle chi 12, estimate distance to destination, though be the important carry-on instrument of mountain-climbing, because the rectangle chi 1 of the aforementioned north arrow of map in the past, for recruitment range finding from, its length is often long and carry inconvenience, and its can not be on the spot 3 accurately aiming measure orientation, have only and utilize north arrow separately and with climber's experience, the orientation of pointing out the destination of summary, for a user who begins to learn mountain-climbing, can not survey real convenience with guiding searching target.

Fundamental purpose of the present utility model is to be to provide a kind of to have longer yardstick and collapsible covering dwindled the space, is easy to carry, and can be held in the hand the folding chart north arrowes of 3 aiming measured directions on the spot in addition again.

The purpose of this utility model reaches as follows:

A kind of folding chart north arrow, it comprises the cover plate that a base plate and that is provided with north arrow is provided with magnifier, all delineates ratio scale in the ring week of base plate and cover plate, it is characterized in that:

Base plate one side is provided with at least one pivot ear, is respectively equipped with pivoted hole on each pivot ear, establishes two corresponding pedestals at its another side, and pedestal is provided with plate, has provided perforation on plate;

Cover plate corresponding to base plate pivot ear side, is formed with the pivot ear with pivoted hole at it, and is pivoted with base plate, establishes an aiming portion in the middle of it, and aiming portion establishes an aiming seam;

The pedestal of one vane degree end mat one movable part and a perforation and base plate articulates, and a magnifier is established at the vane top and an aiming groove is established on the top.

The purpose of this utility model can also following mode reach:

Described folding chart north arrow is characterized in that: the aiming portion of cover plate makes by cover plate is one-body molded.

The utility model has the advantages that: adopt movable pivot joint mode with the cover plate that is provided with the aiming seam by a base plate that is provided with north arrow, make it can obtain long yardstick in use, then collapsible at ordinary times covering, reduced volume, convenient carrying, on base plate, articulate a vane in addition, cooperate north arrow and aiming seam to use, can reach the purpose of measured direction again.

When one, the utility model collocation map used, the general map north arrow of the yardstick after it launches was long, can measure long distance.

Two, base plate of the present utility model and cover plate are collapsible covers, and makes its volume-diminished, convenient carrying.

Three, the utility model can take measured direction by the use of vane and north arrow and aiming seam, obtains an accurate target.

In sum, the utility model entire combination structure really can provide above-mentioned many innovation structural attitudes and progressive effect.

Below by most preferred embodiment and accompanying drawing folding chart north arrow of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the schematic perspective view of map north arrow in the past.

Fig. 2 is the three-dimensional exploded view of the utility model one preferred embodiment.

Fig. 3 is the three-dimensional combination figure of the above-mentioned preferred embodiment of the utility model.

Fig. 4 is that the above-mentioned preferred embodiment measured direction of the utility model uses synoptic diagram.

Fig. 5 is the stereographic map after the above-mentioned preferred embodiment of the utility model folds.

See also shown in Figure 2, the folding chart north arrow of present embodiment, it includes: a base plate 10, a cover plate 20 and a vane 30.

Book office is provided with a north arrow 11 in the middle of the base plate 10, delineation has scale 111 on the north arrow 11, north arrow 11 front ends are established at least one pivot ear 12 on base plate 10, present embodiment is established five pivot ears 12, reach pivoted hole 121 with pivot ear 12 similar numbers, the other end is established two pedestals, 13, two pedestals 13 and is provided with corresponding plate 131 and bores a hole 132, and delineates proportional yardstick 14 in the both sides of base plate 10.

Cover plate 20 be one with the plate body of base plate 10 identical sizes, in its pivot ear 12 sides corresponding to base plate 10, form the pivot ear 21 that several have pivoted hole 211, present embodiment is provided with four pivot ears 21 and four pivot holes 211, wear pivot joint with a body of rod 22 in addition, an aiming portion 23 is established in the appropriate position above pivot ear 21, and aiming portion 23 establishes an aiming seam 231, establish a magnifier 24 at aiming seam 231 front ends, and establish the ratio scale 25 identical in cover plate 20 both sides with base plate 10.

A movable part 31 is established in vane 30 bottoms, and movable part 31 wears a perforation 32, and the perforation 132 that wears two pedestals 13 with a rod 33 and perforation 32 make and be activity and be pivoted, and establishes a magnifier 34 and top at vane 30 tops and establishes an aiming groove 35.

Please continue to consult shown in Figure 3, when the user carries out general map measure and orientation, destination when distinguishing, the angular setting that is about to 20 of base plate 10 of the present utility model and cover plates is 180 degree, making it be horizontal pendulum is located on the map, and make north arrow 11 become positive magnetic north direction with map, utilize the north arrow 11 on the base plate 20 to confirm the orientation, destination, and by base plate 10 and cover plate 20

edge ratio scale

14,25 connection, can obtain long measurement range, with the actual range of estimation from the destination, simultaneously, can be clearer by the magnifier on the cover plate 20 24, promptly seek the sign on the map, in addition, the utility model is again with the effect of measured direction, see also shown in Figure 4, during use, must on map, measure earlier the place of use and orientation angles and the distance that desire is sought the destination, again the utility model is placed on hand, adjust the angle of 20 of base plate 10 and cover plates, and be used the angle that the eyes focal length is adjusted vane 30, utilize the magnifier 34 of vane 30, read out the orientation angles (angle) of purpose and positive magnetic north by scale 111, and the aiming seam 231 that uses the simple eye aiming groove 35 that sees through vane 30 and cover plate 20 extends forward in line and finds out one and ask azimuthal subject matter, by the orientation angles of measuring (angle), the direction of advancing as us, obtain a more accurate measurement effect, please continue consult shown in Figure 5, when carrying or after finishing using, can be with base plate 10 and cover plate 20 folding covering, obtain a smaller size smaller, carry or collect with convenient, real instrument for the interception of mountain-climbing optimised quantity.

In addition, set aiming seam 231 in the aiming portion 23 of cover plate 20 and the aiming portion 23 can be by cover plate 20 one-body molded making, so that reduce its manufacturing process and reduce production costs.

Claims

1, a kind of folding chart north arrow, it comprises the cover plate that a base plate and that is provided with north arrow is provided with magnifier, all delineates ratio scale in the ring week of base plate and cover plate, it is characterized in that:

2, according to the described folding chart north arrow of claim 1, it is characterized in that: the aiming portion of cover plate makes by cover plate is one-body molded.