Iron compasses capable of inserting gel pen refill or ball-point pen refill

Abstract

The utility model discloses an iron compass capable of inserting a gel pen refill or a ball-point pen refill, and relates to the field of circular curve drawing. The compasses solve the problems that a curve is irregular and time and labor are wasted in the drawing process due to the fact that existing compasses cannot directly draw colored circles or arcs. An insertion leg (B) of a gel pen refill or a ball-point pen refill is detachably arranged on a right connecting rod (1); the gel pen refill or ball-point pen refill insertion leg (B) comprises an insertion pin (2) and a locking cap (3), the middle of the insertion pin (2) along the axis of the insertion pin (2) is hollow, the upper portion of the insertion pin (2) is inserted into the right connecting rod (1), a plurality of clamping jaws (4) are arranged on the lower portion of the insertion pin (2), a gel pen refill or ball-point pen refill is inserted into the insertion pin (2), and the locking cap (3) is arranged on the insertion pin (2) in a sleeved mode and clamps the clamping jaws (4) in a screwing mode. And the locking cap (3) clamps the clamping jaw (4) and clamps a gel pen refill or a ball-point pen refill at the same time. The circular curve drawing device is used for drawing circular curves.

Description

Technical Field

[0001] This utility model relates to the field of circular curve drawing technology, specifically to an iron compass that can hold a ballpoint pen refill or gel pen refill for drawing circles or arcs. Background Technology

[0002] In recent years, the drawing of circles or arcs has not decreased due to the development of high technology; on the contrary, it has become increasingly popular for teaching and hand-drawing enthusiasts. Its applications have not diminished either; in fact, they are increasingly used in fields such as painting and design.

[0003] In practical use, existing iron compasses are usually equipped with legs for drawing pencil lines. With continuous optimization of the compass structure, the lead has become increasingly finer, resulting in cleaner and clearer circles or arcs. However, many drawings, such as those in jewelry design and comics, often require corresponding colors. The current common process for drawing colored circles or arcs involves first sketching the design in pencil, then tracing it with a colored gel pen or ballpoint pen. This method, because pencil marks are relatively light, can lead to inaccurate lines and unclear circles or arcs, especially with complex designs. Furthermore, it can result in irregular edges when drawing large circles or arcs, and is also time-consuming and laborious.

[0004] In summary, existing methods for drawing circular curves using lead cores have limitations. They cannot directly draw colored circles or arcs, leading to irregular curves and making the process time-consuming and laborious. Utility Model Content

[0005] The purpose of this invention is to solve the problem that when drawing circular curves using lead cores, it is impossible to directly draw colored circles or arcs, resulting in irregular curves and a laborious process. Therefore, this invention provides an iron compass that can accommodate ballpoint pen refills or gel pen refills.

[0006] The technical solution of this utility model is:

[0007] A compass capable of inserting gel pen refills or ballpoint pen refills includes a compass body and a gel pen refill or ballpoint pen refill insert leg. The gel pen refill or ballpoint pen refill insert leg is detachably mounted on a right connecting rod. The gel pen refill or ballpoint pen refill insert leg includes a pin and a locking cap. The pin is hollow in the middle along its axis. The upper part of the pin is inserted into the right connecting rod. The lower part of the pin is provided with multiple claws. The gel pen refill or ballpoint pen refill is inserted into the pin. The locking cap is fitted onto the pin and clamps the claws by screwing. The locking cap clamps the gel pen refill or ballpoint pen refill while clamping the claws.

[0008] Furthermore, the outer circumferential sidewall of the pin is machined with an external thread, and the upper outer diameter of the pin is smaller than the middle outer diameter. The lower part of the pin is an inverted cone with a gradually decreasing outer diameter. The multiple jaws are located at the inverted cone-shaped pin, and the pin is an integral structure.

[0009] Preferably, the locking cap is a hollow cap body, with the upper part of the locking cap being a cylindrical cap body and the lower part being a conical cap body, and the cylindrical cap body and the conical cap body being made as one piece.

[0010] Furthermore, the outer circumferential sidewalls of the pins and locking caps are machined with anti-slip textures, which are either grid-like patterns, vertically parallel long strip-shaped raised lines, or multiple raised points.

[0011] Furthermore, the number of grippers is three or four, and the width of the grippers gradually decreases from top to bottom until the grippers are tightly pressed together, and the bottom surface of the pin is circular.

[0012] Furthermore, the compass body includes a right connecting rod, a pen tip, a connector, a pivot, a left connecting rod, compass legs, and a compass tip. The pivot is installed at the lower end of the connector, the pen tip is installed vertically at the upper end of the connector, the upper parts of the left and right connecting rods are rotatably connected to the pivot, the lower part of the right connecting rod is connected to the compass legs, and the lower part of the compass legs is connected to the compass tip.

[0013] Furthermore, the compass body also includes a detachable connecting assembly, which includes a screw and a nut. The other end of the left connecting rod has a notch machined along its length. The screw passes through both the end of the left connecting rod and the other end of the compass leg with the compass tip inserted along the width of the left connecting rod, and is then tightened by the nut.

[0014] Preferably, the compass legs and the compass tip are rotatably connected, and the rotation angle is adjustable by screws.

[0015] Furthermore, it also includes a double-ended screw and an adjusting wheel. The adjusting wheel is screwed into the middle of the double-ended screw, and the double-ended screw is screwed into the upper part of the compass leg and the connecting rod, respectively. Driven by the adjusting wheel, the compass leg and the connecting rod move closer or further away at the same time.

[0016] Preferably, the outer circumferential surface of the adjusting wheel is machined with elongated protrusions along its axial direction.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] 1. This utility model provides an iron compass capable of inserting gel pen refills or ballpoint pen refills, which is achieved by providing a pin that is compatible with both gel pen and ballpoint pen refills. The pin structure is simple, using only two components to achieve the fixed clamping of the gel pen or ballpoint pen refill. The entire clamping process is achieved by screwing on the locking cap 3, which further tightens the gripper 4 on the pin 2 through the inner wall of the locking cap 3, thus clamping the gel pen or ballpoint pen refill located within the pin 2.

[0019] The iron compass provided by this utility model can hold different colored ballpoint pens and gel pens according to the user's actual needs, and directly draw colored circles or arcs on the drawing paper without having to trace them again. If necessary, the pattern can be sketched with a pencil first, and then the compass of this utility model can be used to draw directly. This not only avoids the problem of unclear handwriting after pencil drawing, but also saves time and effort in the drawing process.

[0020] 2. The compass tip 12 of this utility model is rotatably connected to the other end of the compass leg 11. By adjusting the position of the compass tip 12, it is possible to draw smaller circles. Generally, the diameter of the circle drawn is less than 10mm, making the drawing process easier and more convenient.

[0021] 3. This utility model adopts a double-headed screw 13 and an adjusting wheel 14, which can ensure that the distance between the compass leg 11 and the connecting rod 6 can be adjusted at the same time, and under the action of the adjusting wheel 14, precise fine adjustment can be achieved. Attached Figure Description

[0022] Figure 1 This is a front sectional view of the insert B of a gel pen refill or ballpoint pen refill.

[0023] Figure 2 yes Figure 1 A partial sectional view in the document;

[0024] Figure 3 This is a schematic diagram of the overall structure of this utility model.

[0025] The components are: A. Compass body, B. Ballpoint pen refill or gel pen refill insert, C. Detachable connecting assembly, C-1. Screw, C-2. Nut, 1. Right connecting rod, 2. Insert, 3. Locking cap, 4. Clamping jaw, 5. External thread, 6. Anti-slip texture, 7. Pen tip, 8. Connector, 9. Rotating shaft, 10. Left connecting rod, 11. Compass support leg, 12. Compass tip, 13. Double-ended screw, 14. Adjusting wheel. Detailed Implementation

[0026] Specific implementation method one: Combining Figures 1 to 3This embodiment describes a compass body A, which also includes a pen refill or ballpoint pen refill insert B. The pen refill or ballpoint pen refill insert B is detachably mounted on the right connecting rod 1. The pen refill or ballpoint pen refill insert B includes a pin 2 and a locking cap 3. The pin 2 is hollow in the middle along its axis. The upper part of the pin 2 is inserted into the right connecting rod 1. The lower part of the pin 2 is provided with multiple claws 4. The pen refill or ballpoint pen refill is inserted into the pin 2. The locking cap 3 is fitted onto the pin 2 and clamps the claws 4 by screwing. The locking cap 3 clamps the pen refill or ballpoint pen refill while clamping the claws 4.

[0027] This embodiment is particularly suitable for situations requiring the drawing of colored circles or arcs. The ballpoint pen refill or gel pen refill leg is detachable, allowing it to function as an independent unit. Only the leg needs to be replaced during use, eliminating the need to disassemble and reassemble the right connecting rod 1 with the leg and change to a different colored refill. Simply replacing the leg not only improves drawing efficiency but also meets usage requirements.

[0028] Specific Implementation Method Two: Combining Figure 1 and Figure 2 In this embodiment, the outer circumferential sidewall of the pin 2 is machined with an external thread 5, and the upper outer diameter of the pin 2 is smaller than the middle outer diameter. The lower part of the pin 2 is an inverted cone with a gradually decreasing outer diameter. The plurality of jaws 4 are located at the inverted cone-shaped pin. The pin 2 is an integral structure.

[0029] This configuration, with the external thread 5 connecting to the locking cap 3, ensures a long service life due to its integrated structure. Other components and connections are the same as in Specific Implementation Method 1.

[0030] Specific implementation method three: Combining Figure 2 In this embodiment, the locking cap 3 is a hollow cap body. The upper part of the locking cap 3 is a cylindrical cap body 3-1, and the lower part is a conical cap body 3-2. The cylindrical cap body 3-1 and the conical cap body 3-2 are made into one piece.

[0031] This setup makes the connection simpler and more convenient, requiring only a twist. Other components and connections are the same as in specific implementation method one or two.

[0032] Specific implementation method four: Combination Figure 2 In this embodiment, the outer circumferential sidewalls of the pin 2 and the locking cap 3 are both machined with anti-slip textures 6. The anti-slip textures 6 are grid-like patterns, vertically parallel long strip-shaped raised textures, or multiple raised points.

[0033] With this design, the anti-slip texture 6 is mainly used for quick refill replacement. During the twisting process, the pin 2 and the locking cap 3 can be firmly gripped, and it is easy to generate opposite forces for quick replacement. Other components and connections are the same as any one of the specific embodiments one to three.

[0034] Specific Implementation Method Five: Combining Figure 2 In this embodiment, the number of grippers 4 is three or four, and the width of the grippers 4 gradually decreases from top to bottom until the grippers 4 are tightly pressed together, at which point the bottom surface of the pin 2 forms a ring. This arrangement facilitates the clamping of ballpoint pens or gel pens. Other components and connections are the same as in any one of embodiments one through four.

[0035] In this embodiment, the outer wall shape of the gripper 4 is adapted to the inner wall shape of the locking cap 3. When the locking cap 3 is screwed, the contact between the inner wall of the locking cap 3 and the outer wall of the gripper 4 is continuously strengthened until it can no longer be screwed, thus firmly clamping the pen refill.

[0036] Specific Implementation Method Six: Combination Figure 2 This embodiment describes a compass body A comprising a right connecting rod 1, a pen tip 7, a connector 8, a rotating shaft 9, a left connecting rod 10, a compass support leg 11, and a compass tip 12. The rotating shaft 9 is mounted on the lower end of the connector 8, and the pen tip 7 is vertically mounted on the upper end of the connector 8. The upper parts of the left connecting rod 10 and the right connecting rod 1 are rotatably connected to the rotating shaft 9. The lower part of the right connecting rod 1 is connected to the compass support leg 11, and the lower part of the compass support leg 11 is connected to the compass tip 12.

[0037] With this design, the compass body A has a simple structure, and the replacement of the ballpoint pen refill or gel pen refill leg B is more convenient. Other components and connections are the same as in any of the specific embodiments one through five.

[0038] In this embodiment, the outer circumferential sidewall of the pen tip 7 is provided with an external frosted surface. This frosted surface helps prevent the compass from slipping during the drawing process and makes the angle of rotation of the compass well controllable.

[0039] In this embodiment, the outer contour of the connector 8 is circular, which saves space and can also effectively serve as a rotating connection between the left and right connecting rods.

[0040] Specific implementation method seven: Combining Figure 3In this embodiment, the compass body A further includes a detachable connecting component C, which includes a screw C-1 and a nut C-2. The other end of the left connecting rod 10 has a notch machined along its length. The screw C-1 passes through both the end of the left connecting rod 10 and the other end of the compass leg 11 (where the compass tip 12 is inserted) along the width direction, and is then tightened by the nut C-2. This design facilitates quick replacement and disassembly of the compass leg 11, making assembly and disassembly convenient. Furthermore, the tightening ensures the secure installation of the compass leg 11. Other components and connections are the same as in any of the specific embodiments one through six.

[0041] In this embodiment, one end of screw C-1 is the large end, which is clamped onto the compass leg 11 and serves as a limit for the compass leg 11. Nut C-2 is screwed onto the other end of screw C-1 and serves as a connection and fixation between the compass leg 11 and the compass tip 12.

[0042] Specific implementation method eight: Combination Figure 3 In this embodiment, the compass leg 11 and the compass tip 12 are rotatably connected, and the rotation angle is adjustable via a screw. This configuration allows the screw to adjust the tightness between the compass leg 11 and the compass tip 12. When angle adjustment is needed, the screw is loosened, the desired angle is determined, and then the screw is tightened. Other components and connections are the same as in any of embodiments one through seven.

[0043] Specific Implementation Method Nine: Combining Figure 3 This embodiment further includes a double-ended screw 13 and an adjusting wheel 14. The adjusting wheel 14 is screwed into the middle of the double-ended screw 13, which is screwed onto the upper parts of the compass leg 11 and the connecting rod 6, respectively. Driven by the adjusting wheel 14, the compass leg 11 and the connecting rod 6 move closer or further apart simultaneously. This arrangement facilitates simultaneous adjustment of the distance between the left and right connecting rods. Other components and connections are the same as in any of the specific embodiments one through eight.

[0044] Specific Implementation Method Ten: Combining Figure 3 In this embodiment, the outer circumferential surface of the adjusting wheel 14 is machined with elongated protrusions along its axial direction. These protrusions are arranged in a circular array, with a quantity of 4, 8, or 12. Other components and connections are the same as in any of the specific embodiments one through nine.

[0045] Combination Figures 1 to 3 The iron compass of this utility model mainly has the following functions in actual working process:

[0046] 1. This utility model can realize the drawing of circles or arcs with small diameters by using the rotational connection between the compass legs and the compass tip, which enables the drawing of arcs with small diameters.

[0047] 2. This utility model can simultaneously adjust the distance between the connecting rod and the compass leg in both directions. During the adjustment process, the adjustment efficiency is high and the adjustment speed is fast.

[0048] 3. This utility model can achieve the drawing of circles or arcs in different colors by replacing the ballpoint pen refill or the B-pin of the pen refill.

[0049] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A compass capable of inserting a ballpoint pen refill or gel pen refill, comprising a compass body (A), characterized in that: It also includes a ballpoint pen refill or gel pen refill insert (B), which is detachably mounted on the right connecting rod (1); The ballpoint pen refill insert (B) includes a pin (2) and a locking cap (3). The middle part of the pin (2) along its axis is hollow. The upper part of the pin (2) is inserted into the right connecting rod (1). The lower part of the pin (2) is provided with multiple claws (4). The ballpoint pen refill is inserted into the pin (2). The locking cap (3) is fitted on the pin (2) and clamps the claws (4) by twisting. The locking cap (3) clamps the ballpoint pen refill while clamping the claws (4).

2. The iron compass according to claim 1, capable of inserting a ballpoint pen refill or gel pen refill, is characterized in that: The outer circumferential sidewall of the pin (2) is machined with an external thread (5), and the upper outer diameter of the pin (2) is smaller than the middle outer diameter. The lower part of the pin (2) is an inverted cone with a gradually narrowing outer diameter. The multiple jaws (4) are located at the inverted cone pin. The pin (2) is an integral structure.

3. The iron compass according to claim 2, capable of inserting a ballpoint pen refill or gel pen refill, is characterized in that: The locking cap (3) is a hollow cap body. The upper part of the locking cap (3) is a cylindrical cap body (3-1), and the lower part is a conical cap body (3-2). The cylindrical cap body (3-1) and the conical cap body (3-2) are made into one piece.

4. The iron compass according to claim 3, capable of inserting a ballpoint pen refill or gel pen refill, characterized in that: The outer circumferential sidewalls of the pin (2) and the locking cap (3) are both processed with anti-slip texture (6). The anti-slip texture (6) is a grid pattern or a long strip of raised texture arranged vertically and parallel or multiple raised points.

5. A compass capable of inserting a ballpoint pen refill or gel pen refill according to claim 1 or 4, characterized in that: The number of grippers (4) is 3 or 4, and the width of the grippers (4) gradually decreases from top to bottom until the grippers (4) are tightly attached to each other, and the bottom surface of the pin (2) is circular.

6. The iron compass according to claim 5, capable of inserting a ballpoint pen refill or gel pen refill, characterized in that: The compass body (A) includes a right connecting rod (1), a pen tip (7), a connector (8), a pivot (9), a left connecting rod (10), compass legs (11), and a compass point (12). The pivot (9) is installed at the lower end of the connector (8), the pen tip (7) is installed vertically at the upper end of the connector (8), the upper parts of the left connecting rod (10) and the right connecting rod (1) are rotatably connected to the pivot (9), the lower part of the right connecting rod (1) is connected to the compass leg (11), and the lower part of the compass leg (11) is connected to the compass tip (12).

7. The iron compass according to claim 6, capable of inserting a ballpoint pen refill or gel pen refill, characterized in that: The compass body (A) also includes a detachable connecting assembly (C), which includes a screw (C-1) and a nut (C-2). The other end of the left connecting rod (10) has a notch machined in its length direction. The screw (C-1) passes through both the end of the left connecting rod (10) and the other end of the compass leg (11) with the compass tip (12) inserted along the width direction of the left connecting rod (10) and is then tightened by the nut (C-2).

8. The iron compass according to claim 7, capable of inserting a ballpoint pen refill or gel pen refill, characterized in that: The compass leg (11) and the compass tip (12) are rotatably connected, and the rotation angle is adjustable by screws.

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