CN216804966U

CN216804966U - Compasses

Info

Publication number: CN216804966U
Application number: CN202220266366.3U
Authority: CN
Inventors: 施吉芬
Original assignee: Yuyao Sikumai Stationery Co ltd
Current assignee: Yuyao Sikumai Stationery Co ltd
Priority date: 2022-02-09
Filing date: 2022-02-09
Publication date: 2022-06-24
Anticipated expiration: 2032-02-09

Abstract

The utility model relates to compasses, which comprise a first supporting leg and are characterized in that: the lower end of the first supporting leg is provided with a slot, and a compasses tip capable of sliding up and down is inserted in the slot; the compasses are characterized by also comprising an elastic piece, wherein the elastic piece enables the compasses tip to always keep the downward sliding trend and be exposed out of the first supporting leg, and the compasses tip is more accurately positioned and is not easy to shift, so that the compasses can smoothly draw a small-diameter arc.

Description

Compasses

Technical Field

The utility model relates to a drawing tool, in particular to compasses.

Background

Compasses (Compasses) are tools used to draw circles or arcs in mathematics and drawings, and are commonly used in ruler drawing. In general, compasses include two support legs, wherein the tip of one support leg is equipped with the compasses point for the centre of a circle location, is equipped with the compasses pen on the other support leg, is used for drawing the circle or arc.

The structure of the compasses is disclosed in the Chinese utility model patent with the patent number ZL202121602565.9 (with the authorization number CN 214873879U). Because the compasses point of compasses is immovable, but the length of compasses pen shortens along with the wearing and tearing of lead core gradually, leads to compasses point and compasses pen height to differ, makes the frictional force between compasses point and the paper and the frictional force between compasses pen and the paper produce the difference, and when compasses point and compasses pen interval are less, when the minor diameter circle is drawn to the compasses promptly, the difference of this kind of frictional force can be more obvious, causes the compasses point unstable and shift at drawing circular arc in-process centering to lead to the circular arc to draw the failure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing the compasses, aiming at the technical current situation, the compasses have more accurate positioning and are not easy to shift, and the compasses can draw small-diameter circular arcs smoothly.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the compasses comprise a first supporting leg and are characterized in that: the lower end of the first supporting leg is provided with a slot, and a compasses tip capable of sliding up and down is inserted in the slot; the compasses also comprise an elastic part, and the elastic part enables the compass tip to always keep the trend of sliding downwards and be exposed out of the first supporting leg.

The compass point can adopt any compass point in the prior art, is not limited to a sharp needle point, and can also be a pressing block, a sucking disc and the like which have a surface contacted with a drawing base and can be positioned.

In order to avoid the compass point moving downwards to the slot, a compass point sleeve is sleeved outside the compass point, a stop block with a through hole is arranged in the slot, the compass point penetrates through the through hole, and the lower surface of the compass point sleeve can abut against the upper surface of the stop block, so that the compass point can be limited to move downwards.

In order to facilitate the installation of the elastic piece and simultaneously to make the structure of the elastic piece simpler, the elastic piece is a spring which is accommodated in the slot and is propped against the needle point sleeve.

In order to prevent the first support leg and the second support leg from rotating relatively, the compass further comprises a compass head and a second support leg, wherein the upper end of the second support leg and/or the upper end of the first support leg are/is hinged on the compass head; the upper end of the first supporting leg is provided with a first tooth part, the upper end of the second supporting leg is provided with a second tooth part, and the second tooth part is meshed with the first tooth part. The first tooth part is meshed with the second tooth part, so that the first support leg and the second support leg are constrained with each other, and the first support leg and the second support leg are not easy to rotate relatively.

In order to facilitate the installation, the disassembly or the replacement of the compass pen, the lower end of the second supporting leg is provided with a first clamping piece and a second clamping piece which are oppositely arranged, and a first clamping groove for inserting the compass pen is formed between the first clamping piece and the second clamping piece; the lower end of the second supporting leg is provided with a first locking structure which can enable the first clamping groove to be tightened or expanded, so that a compass pen inserted into the first clamping groove can be locked and connected with or unlocked from the first clamping groove.

The compasses pen can also adopt any compasses pen in the prior art, not only is limited to a refill, but also can be a painting brush in various forms, such as a chalk, a pencil, a gel pen or a dip pen. The compasses pen can be taken by the compasses itself, and can also be used in combination with the compasses pen on the market, namely, only set up the mounting position of the compasses pen on the compasses, install the compasses pen on the market on the mounting position of the compasses pen and use.

In order to adjust the locking connection degree of the compass pen and the first clamping groove conveniently, the first locking structure comprises a fastener and a locking piece, wherein the fastener penetrates through the first clamping piece and the second clamping piece respectively, and the locking piece is in threaded connection with the fastener.

In order to facilitate fine adjustment of the height of the compasses pen, simultaneously, in order to enable the compasses pen to be connected with the first clamping groove in a locking mode more firmly, the top of the compasses pen is provided with a vertically extending notch, and the compasses pen is inserted into the first clamping groove and is arranged in the first clamping groove, and the fastener can transversely penetrate through the notch.

In order to facilitate the installation, the disassembly or the replacement of the pen core on the compass pen, the compass pen comprises a pen holder which can be inserted in the first clamping groove, the lower end of the pen holder is provided with a third clamping piece and a fourth clamping piece which are oppositely arranged, and a second clamping groove for inserting the pen core is formed between the third clamping piece and the fourth clamping piece; the lower end of the compass pen is further provided with a second locking structure which can enable the second clamping groove to be tightened or expanded, so that the pen core inserted into the second clamping groove is locked and connected or unlocked with the second clamping groove. The pen core can be taken by the compasses, and can also be combined with the pen core on the market for use, namely, only a pen core mounting position is arranged on the compasses, and the pen core on the market is mounted on the pen core mounting position for use. The refill can be a lead refill or a neutral refill, chalk, wax crayon and the like.

In order to make the second locking structure simpler, the second locking structure includes a locking sleeve threadedly connected to the lower end of the barrel, the locking sleeve has an inverted circular truncated cone hole inside of which the inner diameter is gradually reduced from top to bottom, and the third and fourth clamping pieces are received in the inverted circular truncated cone hole.

Compared with the prior art, the utility model has the advantages that: the compasses point can be inserted into the slot in an up-and-down sliding manner, and the compasses point always has the downward sliding trend through the elastic piece and is exposed out of the first supporting leg, when the compasses point is contacted with a drawing foundation like a paper surface, the compasses point can move upwards to dynamically adjust the length of the compasses point exposed out of the first supporting leg, so that the compasses point and the compasses pen are positioned at the same height in a manner of being matched with the length of the compasses pen, the influence caused by the friction difference between the compasses point and the drawing foundation as well as the compasses pen is eliminated, the compasses point is positioned more accurately and is not easy to shift, and the compasses can draw a small-diameter circular arc smoothly.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is a longitudinal cross-sectional view of FIG. 1;

fig. 3 is an exploded perspective view of an embodiment of the present invention.

Detailed Description

The utility model is described in further detail below with reference to the following examples of the drawings.

As shown in FIGS. 1 to 3, the preferred embodiment of the present invention is shown.

As shown in fig. 1, the compass in the present embodiment includes a first leg 1, a second leg 2, a compass head 3, a compass tip 4, a compass pen 5, and other major components.

In the present embodiment, as shown in fig. 2, the upper end of the first leg 1 and the upper end of the second leg 2 are both hinged inside the head 3 of the compass, so that the first leg 1 and the second leg 2 can rotate relative to each other. The arrangement of the first leg 1 in connection with the head 3 and the second leg 2 in connection with the head 3 are known from the prior art. The upper end of the first leg 1 is provided with a first tooth portion 12, the upper end of the second leg 2 is provided with a second tooth portion 23, and the second tooth portion 23 is meshed with the first tooth portion 12. The first tooth portion 12 is engaged with the second tooth portion 23 to restrict the first leg 1 and the second leg 2 from each other, so that the first leg 1 and the second leg 2 are less likely to rotate relative to each other.

In other embodiments, it may also be provided that one of the first and

second legs

1, 2 is fixedly connected to the head 3, and the other of the first and

second legs

1, 2 is rotatable relative to the head 3; alternatively, the first leg 1 and/or the second leg 2 may be slidably constrained to the compass head 3 to and fro by moving the first leg 1 and/or the second leg 2 to and fro to vary the relative distance between the first leg 1 and the second leg 2.

As shown in fig. 1, the compass tip 4 is provided at the lower end of the first leg 1. The compass point 4 can adopt any compass point 4 in the prior art, is not limited to a sharp needle point, and can be a pressing block, a sucking disc and the like which have a surface contacting with a drawing base and can be positioned.

As shown in fig. 2, in the present embodiment, the lower end of the first leg 1 is provided with a slot 11, and the compass tip 4 is inserted into the slot 11 in a vertically slidable manner. The slot 11 also accommodates an elastic member, which makes the compass tip 4 always keep a downward sliding trend and can be exposed out of the first leg 1. When the compass point 4 contacts with the drawing foundation like a paper surface, the compass point 4 can move upwards to dynamically adjust the length of the compass point 4 exposed out of the first supporting leg 1 so as to be matched with the length of the compass pen 5, so that the compass point 4 and the compass pen 5 are positioned at the same height, the influence caused by the friction difference between the compass point 4 and the compass pen 5 and the drawing foundation is eliminated, the compass point 4 is positioned more accurately and is not easy to shift, and the compass can draw a small-diameter circular arc smoothly.

As shown in fig. 2, a compass tip sleeve 9 is sleeved outside the compass tip 4, a stop block 8 with a through hole 81 (see fig. 3) is arranged in the slot 11, the compass tip 4 is arranged in the through hole 81 in a penetrating manner, and the lower surface of the compass tip sleeve 9 can abut against the upper surface of the stop block 8, so that the downward movement of the compass tip 4 can be limited, and the compass tip 4 is prevented from moving downward to be separated from the slot 11. The elastic element is a spring 7 which is pressed against the needle tip sleeve 9.

As shown in fig. 1, a compass pen 5 is provided at the lower end of the second leg 2. The compasses pen 5 can be taken by the compasses, and can also be used in combination with the compasses pen 5 on the market, namely, only the mounting position of the compasses pen 5 is arranged on the compasses, and the compasses pen 5 on the market is mounted on the mounting position of the compasses pen 5 for use.

As shown in fig. 3, the lower end of the second leg 2 has a first clip 21 and a second clip 22 which are oppositely arranged, and a first clip groove 210 for inserting the compass pen 5 is formed between the first clip 21 and the second clip 22; the lower end of the second leg 2 is provided with a first locking structure which can enable the first clamping groove 210 to be tightened, so that the compass pen 5 inserted into the first clamping groove 210 is locked and connected with the first clamping groove 210. The first locking structure includes a fastening member 61 penetrating the first jaw 21 and the second jaw 22, respectively, and a locking member 62 threadedly coupled to the fastening member 61, thereby facilitating adjustment of the locking coupling degree of the compass pen 5 to the first clip groove 210. The top of this compasses pen 5 is equipped with the breach 523 of vertical extension, inserts under the state of arranging in first clamp groove 210 at compasses pen 5, and fastener 61 can transversely run through breach 523 (see fig. 2) to both be convenient for finely tune the height of compasses pen 5, can also make the locking of compasses pen 5 and first clamp groove 210 be connected more firmly. In this embodiment, the fastening member 61 is a screw, and the locking member 62 is a nut.

As shown in fig. 3, the compasses pen 5 include a pen holder 52 capable of being inserted into the first clamping groove 210, and a notch 523 is formed at the upper end of the pen holder 52; the lower end of the pen holder 52 is provided with a third clamping piece 521 and a fourth clamping piece 522 which are oppositely arranged, and a second clamping groove 520 for inserting the pen core 51 is formed between the third clamping piece 521 and the fourth clamping piece 522. The pen core 51 can be a pen core carried by a compass, and can also be combined with a pen core 51 on the market for use, namely, only a pen core mounting position is arranged on the compass pen 5, and the pen core 51 on the market is mounted on the pen core mounting position for use. The lead 51 may be a pencil lead or a neutral lead, chalk, crayon, or the like.

As shown in fig. 2, the lower end of the compass pen 5 is further provided with a second locking structure capable of tightening the second clamping groove 520, so that the pen core 51 inserted into the second clamping groove 520 is locked and connected with the second clamping groove 520. The second locking structure includes a locking sleeve 53 threadedly coupled to the lower end of the barrel 52, the locking sleeve 53 having an inner diameter of a rounded-off-cone hole 531 formed therein, the inner diameter of which is gradually reduced from top to bottom, and a third jaw 521 and a fourth jaw 522 received in the rounded-off-cone hole 531, so that the locking sleeve 53 can be moved up and down with respect to the barrel 52 by rotating the locking sleeve 53 to tighten or expand the second clip groove 520.

In other embodiments, the compasses pen 5 may also comprise only the pen core 51, i.e. the pen core 51 is directly mounted in the first clip groove 210. Or the compasses pen 5 is a dip pen.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims

1. A compass comprises a first leg (1), and is characterized in that: the lower end of the first supporting leg (1) is provided with a slot (11), and a compasses tip (4) capable of sliding up and down is inserted in the slot (11); the compasses also comprise an elastic part, and the elastic part enables the compass point (4) to always keep the downward sliding trend and be exposed out of the first supporting leg (1).

2. The compass of claim 1, wherein: the compasses point (4) outside cover is equipped with needle point cover (9), be equipped with in slot (11) and open dog (8) that have through-hole (81), compasses point (4) wear to locate in through-hole (81), just the lower surface ability of needle point cover (9) with the upper surface of dog (8) offsets, thereby can restrict the downstream of compasses point (4).

3. The compass of claim 2, wherein: the elastic piece is a spring (7) which is accommodated in the slot (11) and is propped against the needle point sleeve (9).

4. The compass according to claim 1, 2 or 3, wherein: the compasses also comprise a compass head (3) and a second supporting leg (2), wherein the upper end of the second supporting leg (2) and/or the upper end of the first supporting leg (1) are hinged on the compass head (3); the upper end of the first supporting leg (1) is provided with a first tooth part (12), the upper end of the second supporting leg (2) is provided with a second tooth part (23), and the second tooth part (23) is meshed with the first tooth part (12).

5. The compass of claim 4, wherein: the lower end of the second supporting leg (2) is provided with a first clamping piece (21) and a second clamping piece (22) which are oppositely arranged, and a first clamping groove (210) for inserting the compasses (5) is formed between the first clamping piece (21) and the second clamping piece (22); the lower end of the second supporting leg (2) is provided with a first locking structure which can enable the first clamping groove (210) to be tightened or expanded, so that a compass pen (5) inserted into the first clamping groove (210) can be locked and connected with or unlocked from the first clamping groove (210).

6. The compass of claim 5, wherein: the first locking structure comprises a fastener (61) penetrating through the first clamping piece (21) and the second clamping piece (22) respectively, and a locking piece (62) in threaded connection with the fastener (61).

7. The compass of claim 6, wherein: the top of compasses pen (5) is equipped with vertical extension's breach (523) compasses pen (5) insert and arrange in under the state in first clamp groove (210), fastener (61) can transversely run through breach (523).

8. The compass of claim 5, wherein: the compasses (5) comprise a pen holder (52) which can be inserted into the first clamping groove (210), the lower end of the pen holder (52) is provided with a third clamping piece (521) and a fourth clamping piece (522) which are oppositely arranged, and a second clamping groove (520) for inserting the pen core (51) is formed between the third clamping piece (521) and the fourth clamping piece (522); the lower end of the compasses pen (5) is also provided with a second locking structure which can enable the second clamping groove (520) to be tightened or expanded, so that the pen core (51) inserted into the second clamping groove (520) is locked and connected with or unlocked from the second clamping groove (520).

9. The compass of claim 8, wherein: the second locking structure includes a locking sleeve (53) which is screwed to the lower end of the barrel (52), the locking sleeve (53) has an inverted circular truncated cone hole (531) in which the inner diameter is gradually reduced from top to bottom, and the third clamping piece (521) and the fourth clamping piece (522) are accommodated in the inverted circular truncated cone hole (531).