CN216101234U

CN216101234U - Compass with stable circle center foot

Info

Publication number: CN216101234U
Application number: CN202121481319.2U
Authority: CN
Inventors: 谢嘉豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-03-22
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to the technical field of compasses, in particular to a compass with stable circle center feet, which comprises a circle center barrel, wherein a containing cover is arranged on the outer ring surface of the circle center barrel, a telescopic plate is arranged on the inner side of the containing cover, a second sleeve ring is arranged at one end, far away from the containing cover, of the telescopic plate, a groove is formed in the telescopic plate, a circumference barrel is arranged on the inner side of the second sleeve ring, and the compass drawing can be performed in a transverse telescopic mode through the arranged telescopic plate, so that the stability of the compass drawing device is improved.

Description

Compass with stable circle center foot

Technical Field

The utility model relates to the technical field of compasses, in particular to a compass with a stable circle center foot.

Background

The compasses are used for drawing circles or strings in mathematics and drawing, are usually used for drawing by a ruler and a compass, when the compasses are used for drawing, firstly, a straight ruler can be used for drawing the radius of a circle or a cambered surface on paper, then, two feet of the compasses respectively correspond to two end points of the radius, and then, one foot with a refill on the compasses can be rotated to form a corresponding circle or a cambered surface.

When the compasses are used for drawing, the commonly used compasses are extended through an included angle, and the problem of inclination of the included angle easily causes the circular support leg to move when rotating.

Therefore, the compasses with stable circle center feet are needed to improve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pair of compasses with stable circle center feet, which is used for solving the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the compasses with the stable circle center feet comprise a circle center barrel, wherein a storage cover is arranged on the outer annular surface of the circle center barrel, a telescopic plate is arranged on the inner side of the storage cover, a second sleeve ring is arranged at one end, far away from the storage cover, of the telescopic plate, a groove is formed in the telescopic plate, and a circumference barrel is arranged on the inner side of the second sleeve ring.

As a preferable scheme of the present invention, a center needle is disposed at the center of the bottom of the center cylinder, a bearing sleeve is sleeved on an outer annular surface of the center cylinder, a first sleeve ring is sleeved on the outer annular surface of the bearing sleeve, a receiving cover is disposed at one side of the outer annular surface of the first sleeve ring, sliding grooves are disposed on two side sections of the peripheral length of the receiving cover and along the length direction of the receiving cover, and a nut is disposed on one side section of the peripheral length of the receiving cover and close to the outer edge of the sliding grooves.

As a preferable scheme of the present invention, an expansion plate is disposed at one end of the storage cover away from the cylindrical barrel, second threaded rods are disposed on cross sections of two sides of the peripheral length of the expansion plate and near the cylindrical barrel, one end of each second threaded rod passes through the sliding groove to be in threaded connection with the nut, a groove is disposed at the bottom of a cross section of the expansion plate at one side away from the storage cover, a first threaded rod is disposed at the inner side of the groove, and one end of the first threaded rod penetrates through the outer portion of the expansion plate.

In a preferred embodiment of the present invention, a second collar is disposed at an end of the retractable plate away from the storage cover, a circumferential cylinder is disposed inside the second collar, and a refill is disposed at a center of a bottom of the circumferential cylinder.

As a preferable scheme of the utility model, a connecting block is arranged on one side of the outer ring surface of the second sleeve ring close to the expansion plate, threaded holes are formed in the cross sections of the two sides of the peripheral length of the connecting block, and the first threaded rod is in threaded connection with the threaded holes in the connecting block.

As a preferable scheme of the utility model, one end of the expansion plate, which is far away from the second lantern ring, extends to the inner side of the storage cover, and distance scale marks are arranged on the cross sections of two sides of the peripheral length of the expansion plate.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the drawing device, the bearing sleeve, the containing cover, the telescopic plate, the groove, the first threaded rod and the second threaded rod are arranged, so that the drawing device is more labor-saving in rotation during drawing, the phenomenon that a fixed pin moves during drawing is effectively avoided, drawing can be realized in an inward rotation mode for a small radius, and the stability and the portability of the drawing device are greatly improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of a telescopic plate structure according to the present invention;

fig. 3 is a schematic diagram of a connection block structure according to the present invention.

In the figure: a cylindrical barrel; 2. a circle center needle; 3. a bearing housing; 4. a first collar; 5. a storage cover; 501. a chute; 6. a nut; 7. a retractable plate; 701. a groove; 8. a first threaded rod; 9. a second threaded rod; 10. a second collar; 11. a circumferential cylinder; 12. a painting pen core; 13. connecting blocks; 14. a threaded bore.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Several embodiments of the utility model are presented. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-3, the present invention provides a technical solution:

the utility model provides a compasses that centre of a circle foot is stable, includes a circle center section of thick bamboo 1, is equipped with on the outer anchor ring of a circle center section of thick bamboo 1 and accomodates cover 5, is equipped with expansion plate 7 in the inboard of accomodating cover 5, keeps away from the one end of accomodating cover 5 at expansion plate 7 and is equipped with the second lantern ring 10, and has seted up recess 701 on expansion plate 7, is equipped with a circumference section of thick bamboo 11 in the inboard of second lantern ring 10.

In the embodiment, referring to fig. 1, 2 and 3, a center needle 2 is disposed at the center of the bottom of a center cylinder 1, a bearing sleeve 3 is sleeved on the outer annular surface of the center cylinder 1, a first collar 4 is sleeved on the outer annular surface of the bearing sleeve 3, a receiving cover 5 is disposed at one side of the outer annular surface of the first collar 4, a sliding groove 501 is disposed at two side sections of the peripheral length of the receiving cover 5 along the length direction of the receiving cover 5, a nut 6 is disposed at one side section of the peripheral length of the receiving cover 5 and close to the outer edge of the sliding groove 501, an expansion plate 7 is disposed at one end of the receiving cover 5 far away from the center cylinder 1, a second threaded rod 9 is disposed at two side sections of the peripheral length of the expansion plate 7 and close to the center cylinder 1, one end of the second threaded rod 9 passes through the sliding groove 501 to be in threaded connection with the nut 6, a groove 701 is disposed at the bottom of the section of the expansion plate 7 far away from the receiving cover 5, a first threaded rod 8 is disposed at the inner side of the groove 701, and one end of the first threaded rod 8 penetrates through the outside of the telescopic plate 7, one end, far away from the storage cover 5, of the telescopic plate 7 is provided with a second sleeve ring 10, the inner side of the second sleeve ring 10 is provided with a circumferential cylinder 11, the center of the bottom of the circumferential cylinder 11 is provided with a drawing pen core 12, one end, far away from the second sleeve ring 10, of the telescopic plate 7 extends to the inner side of the storage cover 5, distance scale marks are arranged on the cross sections of the two sides of the peripheral length of the telescopic plate 7, and the device conducts compasses drawing in a transverse moving mode through the arranged telescopic plate 7, so that the situation that the fixed pins move while drawing is effectively avoided.

In an embodiment, referring to fig. 1, 2 and 3, a connecting block 13 is disposed on one side of an outer annular surface of the second sleeve ring 10, which is close to the expansion plate 7, threaded holes 14 are formed in cross sections of two sides of the peripheral length of the connecting block 13, the first threaded rod 8 is in threaded connection with the threaded holes 14 in the connecting block 13, and the device can be used for drawing a small radius in a mode of rotating inwards through the arranged connecting block 13, so that the practicability of the device is improved.

The working principle is as follows: during the use, when the circular or arcwall face radius that needs draw is longer, nut 6 can become flexible, make second threaded rod 9 outside slip 6 inboards at the spout, at this moment expansion plate 7 extends to the outside simultaneously, thereby with the distance extension between a 1 and a circumference section of thick bamboo 11 of heart section of thick bamboo, can go the extension distance of adjusting expansion plate 7 according to the distance scale mark on the expansion plate 7 in addition, make the extension distance of expansion plate 7 the same with the radius of circular or arcwall face, then rotate a circumference section of thick bamboo 11, make first lantern ring 4 rotate on bearing housing 3, and is more laborsaving, and effectively avoided the fixed stitch emergence removal in the mapping, thereby the stability of device has been improved greatly, certain spreading value has.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a stable compasses of centre of a circle foot, includes a circle center section of thick bamboo (1), its characterized in that: the outer ring surface of the round barrel (1) is provided with a containing cover (5), the inner side of the containing cover (5) is provided with a telescopic plate (7), one end of the telescopic plate (7) far away from the containing cover (5) is provided with a second sleeve ring (10), the telescopic plate (7) is provided with a groove (701), and the inner side of the second sleeve ring (10) is provided with a round barrel (11).

2. The compasses of claim 1 that are circle-center foot stable, wherein: the bottom center department of a circle heart section of thick bamboo (1) is equipped with centre of a circle needle (2), the cover is established on the outer anchor ring of a circle heart section of thick bamboo (1) and is installed bearing housing (3), the cover is established on the outer anchor ring of bearing housing (3) and is installed first lantern ring (4), be equipped with on the outer anchor ring one side of first lantern ring (4) and accomodate cover (5), peripheral length both sides cross-section of accomodating cover (5) and along the length direction who accomodates cover (5) has seted up spout (501), peripheral length one side cross-section of accomodating cover (5) and press close to spout (501) outer along the department and be equipped with nut (6).

3. The compasses of claim 1 that are circle-center foot stable, wherein: accomodate cover (5) and keep away from the one end of a circle core section of thick bamboo (1) and be equipped with expansion plate (7), peripheral length both sides cross-section and be close to a circle core section of thick bamboo (1) department at expansion plate (7) and be equipped with second threaded rod (9), the one end of second threaded rod (9) is passed spout (501) and is carried out threaded connection with nut (6), keeps away from in expansion plate (7) and accomodates cover (5) one side cross-sectional bottom and offers fluted (701), is equipped with first threaded rod (8) in the inboard of recess (701), and the one end of first threaded rod (8) runs through to the outside of expansion plate (7).

4. The compasses of claim 1 that are circle-center foot stable, wherein: one end of the expansion plate (7) far away from the storage cover (5) is provided with a second sleeve ring (10), the inner side of the second sleeve ring (10) is provided with a circumferential cylinder (11), and the center of the bottom of the circumferential cylinder (11) is provided with a painting pen core (12).

5. The compasses of claim 1 that are circle-center foot stable, wherein: one side of the outer ring surface of the second lantern ring (10) close to the expansion plate (7) is provided with a connecting block (13), threaded holes (14) are formed in the cross sections of the two sides of the peripheral length of the connecting block (13), and the first threaded rod (8) is in threaded connection with the threaded holes (14) in the connecting block (13).

6. The compasses of claim 1 that are circle-center foot stable, wherein: one end, far away from the second lantern ring (10), of the expansion plate (7) extends to the inner side of the storage cover (5), and distance scale marks are arranged on the cross sections of the two sides of the peripheral length of the expansion plate (7).