Adjustable rotating pen and compass

Abstract

To provide a rotationally adjustable pen and a compass including the same, capable of adjusting the length of a pen core exposed from a pen housing, having a small number of parts and a simple structure. [Solution] The adjustable rotation pen includes a pen housing. The pen housing includes an outer housing 2 and an inner housing 3. The inner housing has a tail end attached to the outer housing, and a rotating part 4 is attached to the pen housing. The rotating part is attached to the inner housing. A pen core 5 is attached to the tip of the rotating part, and by rotating the tip of the inner housing, the rotating part moves the pen housing to adjust the length of the pen core exposed from the tip of the pen housing.

Description

[Technical field]

[0001] The present invention relates to the technical field of study aids, and in particular to adjustable rotation pens and compasses. [Background technology]

[0002] Chinese patent publication CN218577360U discloses a pencil with replaceable lead that can be rotated and adjusted manually. It includes a pen housing, the pen housing has a pen cover slidably connected to the outer tip, the pen cover has a cutting groove at the tip, the pen housing has an internal thread, the pen housing has an engagement groove at the upper side, the pen housing has a circular cover slidably connected to the tip, the circular cover has an arc-shaped strip fixedly connected to the bottom end, the arc-shaped strip has a movable part slidably connected to the outside, the movable part has an external thread, and the movable part has an insertion hole at the bottom end. In this invention, the movable part moves up or down by rotating the adjustment knob, and the pencil lead moves synchronously. Therefore, the parts for moving the pencil lead include the arc-shaped strip, the pen head, the pen housing, and the movable part. This increases the number of parts and complicates the principle of adjusting the pencil lead. Summary of the Invention [Problem to be solved by the invention]

[0003] Therefore, in response to the above problems, the objective is to provide a rotatable pen and a compass including the same, which can solve the problem that the conventional technology has a large number of parts and makes it difficult to adjust the pen core to move. To achieve the above objective, the present invention is realized based on the following technical means. [Means for solving the problem]

[0004] The adjustable rotation pen includes a pen housing, the pen housing including an outer housing and an inner housing, the inner housing having a tail end attached to the outer housing, a rotating part attached to the pen housing, the rotating part attached to the inner housing, and a pen core attached to a tip of the rotating part, and by rotating the tip of the inner housing, the rotating part moves the pen housing to adjust the length of the pen core exposed from the tip of the pen housing.

[0005] Preferably, the rotating portion has a tail end exposed from the tail end of the inner housing and is provided with a first screw thread, and the outer housing has an inner wall provided with a second screw thread.

[0006] Preferably, the rotating portion has a plurality of protrusions on the outside of a tip end, and the inner housing has a plurality of through holes at a tip end.

[0007] Preferably, the inner housing is provided with an engagement ring on the outside, and the outer housing is provided with an annular position limiting groove that engages with the engagement ring at a location where the inner housing is inserted.

[0008] Preferably, the rotating portion has a circumferentially bulging side wall at its tip and an adjustment joint is provided on either side of the side wall.

[0009] Preferably, the inner housing has a sliding prevention pattern on a tip end.

[0010] Preferably, the outer housing has a vent hole on the rear side.

[0011] The compass includes the above-mentioned rotatably adjustable pen and a compass adjustment holder, the compass adjustment holder is provided with a fixing ring, and the pen housing is provided on the fixing ring.

[0012] Preferably, the compass adjustment holder includes a fixed head, a first turning rod and a second turning rod, the first turning rod and the second turning rod are connected at their ends to the fixed head, open to rotate toward both the left and right sides of the fixed head, and have an installation groove at a location close to one side, and the fixing ring is installed in the installation groove. Preferably, the first turning rod and the second turning rod are provided with an opening groove on both the front and rear sides for easy separation. Effect of the Invention

[0013] 1. This invention comprises an outer housing, an inner housing and a rotating part. By rotating the inner housing from the end of the pen housing, the length of the pen core exposed from the pen housing can be adjusted, thereby reducing the number of parts and simplifying the structure.

[0014] 2. In this invention, an outer protrusion is installed at the tip of the rotating part, and a through hole is installed at the tip of the inner housing. When the rotating part is placed in the inner housing, a clamping force is generated between the tip of the rotating part and the rotating part. As a result, when the rotating part is first screwed into the pen housing, there is no free rotation between the inner housing and the rotating part. The rotating part can be screwed into the pen housing. When the protrusion is screwed into the through hole, the protrusion is slightly engaged with the through hole. When the rotating part is opened along the adjustment joint, the pen refill can be directly replaced.

[0015] 3. By providing the protrusion, the through hole, the engagement ring and the annular position limiting groove, when the first thread is screwed into the very end of the second thread, the tip of the inner housing continues to rotate, and the force generated by the rotation pushes out the inner housing until the first thread is disengaged from the second thread, causing the engagement ring to separate from the annular position limiting groove, and when mounting, the engagement ring and the annular position limiting groove can be assembled by simply pushing the inner housing into the outer housing. This device is easy to mount and dismount.

[0016] 4. In this invention, an installation groove is installed near one side of the first and second turning rods, and the fixing ring is installed in the installation groove, so that the fixing ring and the rotation-adjustable pen can be installed hidden in the groove, which can prevent them from being damaged by falling and play a protective role. [Brief description of the drawings]

[0017] [Figure 1] 1 is a schematic diagram showing the configuration of a pen housing according to an embodiment of the present invention; [Diagram 2] FIG. 2 is an exploded schematic diagram of the configuration according to the embodiment of the present invention. [Diagram 3] 1 is a schematic cross-sectional view showing the configuration of a pen housing according to an embodiment of the present invention; [Figure 4] 2 is a schematic diagram showing the configuration of a compass adjustment holder according to an embodiment of the present invention; FIG. [Diagram 5] 2 is a schematic diagram showing a part of the configuration of a compass adjustment holder according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] The following describes in detail the embodiments of the present invention with reference to specific examples, so as to explain how the technical means can be used to solve the technical problems, as well as the achievable technical effects and processes, in order to allow the present invention to be fully understood and implemented.

[0019] First embodiment As shown in Figures 1 to 4, the adjustable rotation pen includes a pen housing 1, which includes an outer housing 2 and an inner housing 3, the inner housing 3 has a tail end attached to the outer housing 2, a rotating part 4 is provided in the pen housing 1, the rotating part 4 is provided in the inner housing 3, a pen core 5 is provided at the tip of the rotating part 4, the tail end of the rotating part 4 is exposed from the tail end of the inner housing 3 and is provided with a first thread 6, and a second thread 7 is provided on the inner wall of the outer housing 2, and by rotating the tip of the rotating inner housing 3, the rotating part 4 moves in the pen housing 1 to adjust the length of the pen core 5 exposed from the tip of the pen housing 1.

[0020] By installing the outer housing 2, the inner housing 3 and the rotating part 4, the length of the pen core 5 exposed from the pen housing 1 can be adjusted by rotating the inner housing 3 at the tip of the pen housing 1, thereby reducing the number of parts and simplifying the structure.

[0021] The rotating part 4 has a protrusion 8 on each side of its tip. The inner housing 3 has four annular through holes 9 at its tip. The rotating part 4 has a bulging side wall at its tip, and has adjustment joints 10 on both sides of the side wall. The adjustment joints 10 allow the pen core 5 to be clamped and replaced.

[0022] In another preferred embodiment, to ensure that the core 5 and the rotating part 4 are fixed, glue is applied to the end of the rotating part 4 to fix the core 5. When replacing, the core 5 should be replaced together with the rotating part 4.

[0023] By providing a protrusion 8 on the outside of the tip of the rotating part 4 and a through hole 9 at the tip of the inner housing 3, when the rotating part 4 is placed in the inner housing 3, a tightening force is generated between the tip of the rotating part 4 and the rotating part 4. As a result, when the rotating part 4 is initially screwed into the pen housing 1, there is no free rotation between the inner housing 3 and the rotating part 4. Then, the rotating part 4 is screwed into the pen housing 1. In order to prevent the rotating part 4 and the inner housing 3 from rotating against each other, it is preferable that the side wall of the inner housing 3 has a square cross section.

[0024] The inner housing 3 is provided with an engagement ring 11 on the outside, and the outer housing 2 is provided with an annular position limiting groove 12 that mates with the engagement ring 11 at the insertion point of the inner housing 3. The inner housing 3 is provided with an anti-slip groove 13 at its tip to increase the friction when rotating the tip of the inner housing. The outer housing 2 is provided with a gas vent hole (not shown) on its back side. By combining the engagement ring 11 located on the inner housing 3 with the annular position limiting groove 12 located on the outer housing, it is possible to avoid the problem that it becomes difficult to adjust the rotating part 4 due to the sealing in the pen housing 1.

[0025] By installing the protrusion 8, through hole 9, engaging ring 11 and annular position limiting groove 12, when the first screw thread 6 is screwed into the very tip of the second screw thread 7, the tip of the inner housing 3 continues to rotate, and the force generated by this rotation pushes the inner housing 3 until the first screw thread 6 disengages from the second screw thread 7, and the engaging ring 11 separates from the annular position limiting groove 12. During installation, the engaging ring 11 and the annular position limiting groove 12 can be combined by simply pushing the inner housing 3 into the outer housing 2, making it easy to attach and detach.

[0026] Second embodiment 4 and 5, the compass includes the above-mentioned rotatable pen and a compass adjustment holder 14. The compass adjustment holder 14 is provided with a fixed ring 15, and the pen housing 1 is mounted on the fixed ring 15. To assemble the pen housing 1 and the fixed ring 15, the pen housing is engaged with the fixed ring 15 by threads or the outer diameter of the outer wall of the pen housing. These are conventional technical means, so they will not be described here again. The compass adjustment holder 14 includes a fixed head 16, a first turning rod 17 and a second turning rod 18. The first turning rod 17 and the second turning rod 18 are connected at their ends to the fixed head 16. The first turning rod 17 and the second turning rod 18 can be rotated to open on both the left and right sides of the fixed head 16. The first turning rod 17 and the second turning rod 18 are provided with installation grooves at the locations approaching one side. The fixing ring 15 is installed in an installation groove, and the first turning rod 17 and the second turning rod 18 are provided with an opening groove 20 on both the front and rear sides thereof for easy separation.

[0027] By providing installation grooves at locations approaching one side of the first turning bar 17 and the second turning bar 18 and installing the fixing ring 15 in the installation groove, the fixing ring 15 and the pen housing 1 can be installed hidden in the installation groove, thereby preventing damage due to falling and providing a protective role.

[0028] The principle of use is as follows. During use, the core 5 is completely retracted into the pen housing 1, so that the first thread 6 and the tail end of the second thread 7 are engaged, rotating the tip of the inner housing 3, and the inner housing 3 rotates the rotating part 4. The first thread 6 is engaged with the tip of the second thread 7, and the protrusion 8 installed at the tip of the rotating part 4 prevents the rotating part 4 and the inner housing 3 from rotating against each other. When the first thread 6 is engaged with the tip of the second thread 7, the length of the pen core 5 exposed from the pen housing 1 is maximized. When the protrusion is screwed into the through hole, the protrusion is slightly engaged with the through hole, and the rotating part opens along the adjustment joint, so that the pen core 5 can be directly replaced. The tip of the rotating part 4 is pressed against the tip of the inner housing 3, and when the tip of the inner housing 3 is subsequently rotated, the inner housing 3 is pressed, and the engagement ring 11 is released from the annular position limiting groove 12. In this case, the rotating part 4 is separated from the inner housing 3, and the pen core 5 can be replaced in the same manner. During installation, when the rotating part 4 is inserted back into the inner housing 3 and the tail end of the inner housing 3 is inserted into the outer housing 2, the tip of the rotating part 4 is pushed by the tip of the inner housing 3 due to the installation of the first thread 6 and the second thread 7, making it impossible to assemble the engaging ring 11 and the annular position limiting groove 12. Therefore, the tip of the inner housing 3 must be rotated, and the first thread 6 must be moved to the tail end of the second thread 7, before the engaging ring 11 can be assembled into the annular position limiting groove 12 and installation can be achieved.

[0029] Although the present invention has been described in detail with reference to the preferred embodiment, it is understandable to those skilled in the art that various modifications can be made to the present invention in form or detail without departing from the spirit and scope of the present invention, which are limited by the scope of the utility model claims, and all such modifications should be included in the scope of protection of the present invention. [Explanation of symbols]

[0030] 1 Pen housing 2. Outer housing 3 Inner housing 4 Rotating section 5 Pen nibs 6 First Thread 7 Second Thread 8 protrusions 9 Through holes 10 Adjustment seam 11 Engagement ring 12 Annular position limiting groove 13 Anti-slip pattern 14 Compass adjustment holder 15 Fixing ring 16 Fixed Head 17 First turning rod 18 Second Turn Pole 20 Open groove

Claims

1. 1. An adjustable rotatable pen including a pen housing, the pen housing includes an outer housing and an inner housing, a tail end of the inner housing is attached to the outer housing, the pen housing is provided with a rotating part, the rotating part is attached to the inner housing, the rotating part has a pen core at its tip, the tail end of the rotating part is exposed from the tail end of the inner housing and is provided with a first screw thread, the outer housing has a second screw thread on its inner wall, and as the tip of the inner housing rotates, the rotating part moves in the pen housing to adjust the length of the pen core exposed from the tip of the pen housing.

2. The adjustable rotation pen according to claim 1 , wherein the rotating portion has a plurality of protrusions on the outside of the tip, and the inner housing has a plurality of through holes on the tip.

3. 2. The adjustable rotation pen according to claim 1, wherein the inner housing is provided with an engagement ring on the outside, and an annular position limiting groove that mates with the engagement ring is provided at the portion of the outer housing where the inner housing is inserted.

4. 2. The adjustable rotatable pen of claim 1, wherein the rotating portion has a circumferentially bulging side wall at the tip and an adjustment seam is provided on both sides of the side wall.

5. 2. The adjustable rotation pen according to claim 1, wherein the inner housing has a tip provided with anti-slip patterns.

6. The adjustable rotation pen according to claim 1, wherein the outer housing has a vent hole on the back side.

7. A rotating adjustable pen according to any one of claims 1 to 6, 11. A compass, further comprising a compass adjustment holder, the compass adjustment holder being provided with a fixing ring, the pen housing being provided on the fixing ring.

8. the compass adjustment holder includes a fixed head, a first turning rod and a second turning rod; The compass described in claim 7, characterized in that the first and second turning rods have their tips connected to the fixed head, open so as to rotate toward both the left and right sides of the fixed head, have an installation groove at a location approaching one side, and the fixing ring is installed in the installation groove.

9. The compass according to claim 8, wherein the first and second turning rods are provided with an opening groove on both the front and rear sides for easy separation.

Images