Multifunctional compasses with double-end pen tool

Abstract

The multifunctional compasses with the double-end pen tool comprise a compasses connecting base, a first compasses supporting leg and a second compasses supporting leg, and a positioning needle assembly is arranged at the end, away from the compasses connecting base, of the first compasses supporting leg; the second compass supporting leg comprises a connecting pen sleeve and a double-end pen tool detachably connected with the connecting pen sleeve in an inserted mode, the end, away from the double-end pen tool, of the connecting pen sleeve is rotationally connected with the compass connecting base, one end of the double-end pen tool is a pen or a tool piece, and the other end of the double-end pen tool is also a pen or a tool piece. The tool piece is any one of a pencil lead-shaped tool, a screwdriver, a cutting knife, a needle-shaped tool or a lamp assembly. The multifunctional compasses not only achieve the functions of compasses, but also achieve the functions of a double-end pen, a one-end pen, a one-end tool and a double-end tool, meanwhile, due to expansion of tool pieces, the multifunctional compasses further have the functions of a cutting knife, a screwdriver, a needle-shaped tool or a lamp, and the multifunctional compasses achieve multiple functions and are convenient to store and carry about for use.

Description

Technical Field

[0001] This utility model relates to the field of multifunctional compasses, and in particular to a multifunctional compass with a double-ended pen tool. Background Technology

[0002] Compasses are tools we often need in our studies, teaching, and certain work. However, current compasses have limited functionality, only capable of drawing circles or arcs. For engineers, due to the nature of their work, they often need to measure lengths and angles, record data, draw blueprints, and repair equipment. Therefore, they often need to carry various drawing, measuring, and hand tools such as pens, compasses, protractors, rulers, screwdrivers, cutting tools, and needle-like tools. Sometimes, they also need to carry lighting in dark environments. In current technology, these measuring tools, drawing tools, hand tools, and lighting are all independent tools and have a large size, which is inconvenient for storage and for engineers to carry around.

[0003] Therefore, this utility model provides a multifunctional compass with a double-ended pen tool to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a multifunctional compass with a double-ended pen tool, which can solve the technical problem in the prior art that engineers need to prepare a variety of large and independent tools, which makes them inconvenient to store and carry.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A multifunctional compass with a double-ended pen tool includes a compass connector, a first compass leg and a second compass leg rotatably connected to the compass connector. A positioning pin assembly is provided at the end of the first compass leg away from the compass connector. The second compass leg includes a connecting pen sleeve and a double-ended pen tool detachably connected to the connecting pen sleeve. The end of the connecting pen sleeve away from the double-ended pen tool is rotatably connected to the compass connector. One end of the double-ended pen tool is a pen or tool, and the other end is also a pen or tool. The tool can be any one of a pencil lead-shaped tool, a screwdriver, a cutting knife, a needle-shaped tool, or a lamp assembly.

[0007] Furthermore, the dual-ended pen tool also includes a hollow pen barrel in the middle and pen tips detachably connected to both ends of the hollow pen barrel. A pressing component is provided in the middle of the hollow pen barrel, and a through hole is opened on the side wall of the hollow pen barrel to cooperate with the pressing component. A first spring and any one of pressing mechanical pencil lead, pressing lead, screwdriver, cutting blade, needle tool or lamp assembly are installed between one of the pen tips and the pressing component. A second spring and any one of pressing mechanical pencil lead, pressing lead, screwdriver, cutting blade, needle tool or lamp assembly are installed between the other pen tip and the pressing component.

[0008] Furthermore, the pen is any one of a pencil, mechanical pencil, fountain pen, ballpoint pen, oil-based pen, water-based pen, or gel pen; the refillable pen lead is any one of a fountain pen lead, a ballpoint pen lead, an oil-based pen lead, a water-based pen lead, or a gel pen lead.

[0009] Furthermore, the pressable mechanical pencil lead includes a hollow core cylinder, with an inner core tube at one end inside the hollow core cylinder. A storage cavity is provided between the inner wall of the hollow core cylinder and the outer wall of the inner core tube, the storage cavity being used to store a plurality of pencil leads and / or a plurality of pencil lead-shaped tools. An elastic clamping assembly is provided at the end of the hollow core cylinder near the inner core tube, and a lead-passing channel is provided through the inner core tube and the elastic clamping assembly, allowing the pencil lead or pencil lead-shaped tool to be inserted into the lead-passing channel. The elastic clamping assembly can switch between a state of clamping the pencil lead or pencil lead-shaped tool and a state of releasing the pencil lead or pencil lead-shaped tool. A tail plug is detachably provided at the end of the hollow core cylinder away from the inner core tube.

[0010] Furthermore, the pencil lead-shaped tool includes a pencil lead-shaped part and an action part disposed at one end of the pencil lead-shaped part, the pencil lead-shaped part being able to be inserted into the lead passage; the action part is a blade part or a needle part.

[0011] Furthermore, the elastic clamping assembly includes a gripper, a third spring, a retaining ring, a positioning sleeve, and a core sleeve. The gripper is disposed at one end of the hollow core cylinder near the inner core tube. The retaining ring is movably sleeved on the outside of the gripper. The end of the gripper away from the hollow core cylinder and the retaining ring are movably disposed inside the positioning sleeve. A limiting element is provided at one end of the positioning sleeve near the hollow core cylinder. The core sleeve is provided at one end of the positioning sleeve away from the hollow core cylinder. A positioning step is provided in the middle of the interior of the positioning sleeve. The third spring is sleeved on the outside of the gripper and located between the positioning sleeve and the hollow core cylinder. A locking ring is also provided inside the positioning sleeve. The inner diameter of the locking ring is slightly smaller than the diameter of the pencil lead and the diameter of the pencil lead-shaped portion, respectively.

[0012] Furthermore, the pressing assembly includes a movable cylinder and a pressing protrusion disposed on the outer wall of the movable cylinder. A partition plate is disposed inside the movable cylinder. The pressing protrusion passes through the through hole and extends to the outer side of the central hollow pen barrel. The hole wall of the through hole is provided with a plurality of control steps that cooperate with the pressing protrusion.

[0013] Furthermore, the side of the first compass leg opposite to the second compass leg is set as a first plane, and the side of the second compass leg opposite to the first compass leg is set as a second plane, and the first plane and the second plane can fit together; a first length scale line is provided on the first plane, and a second length scale line is provided on the second plane.

[0014] Furthermore, the double-ended pen tool has storage holes at both ends on the side opposite to the first compass leg. The positioning pin assembly includes a mounting base and a positioning pin disposed on the mounting base. The positioning pin is set at an angle to the first compass leg, and the end of the positioning pin away from the compass connecting seat faces the double-ended pen tool. The positioning pin can be inserted into the storage hole. The end of the first compass leg away from the compass connecting seat has a mounting groove, and the mounting base can be detachably inserted into the mounting groove.

[0015] Furthermore, one side of the first compass leg is a straight edge and the other side is a wavy edge, and the first length scale line is also provided on the side of the first compass leg away from the second compass leg.

[0016] Furthermore, it also includes a protractor, one surface of which is provided with angle scale lines; the protractor is detachably connected to at least one of the compass connector, the first compass leg, or the second compass leg.

[0017] Furthermore, one side of the protractor is a first arc-shaped side, and the other side of the protractor is composed of a second arc-shaped side and a second straight side connected to each other. On the surface of the protractor where the angle scale line is provided, a third length scale line is provided near the second straight side. The other surface of the protractor is provided with a radius scale line and a radius length comparison value corresponding to the radius scale line.

[0018] Furthermore, it also includes a threaded fastener and a nut. The threaded fastener passes through the compass connector, the first compass leg, and the second compass leg and is threadedly connected to the nut. The threaded fastener has a mounting hole in the middle. A fourth spring and a needle body are provided in the mounting hole. The needle body is located at the end of the mounting hole away from the nut. The needle body protrudes out of the threaded fastener under the action of the fourth spring.

[0019] Furthermore, one surface of the protractor is provided with at least two first fixing posts spaced apart, and the other surface is provided with at least two second fixing posts spaced apart. The connecting pen sleeve is provided with a first fixing hole that mates with the first fixing posts, and both ends of the double-ended pen tool are provided with a second fixing hole that mates with the second fixing posts.

[0020] Furthermore, it also includes a pen clip and an eraser. The pen clip is disposed at one end of the first compass leg near the compass connecting seat. The top of the compass connecting seat is provided with a receiving groove, and the eraser is disposed in the receiving groove.

[0021] The beneficial effects of this utility model are as follows:

[0022] (1) The multifunctional compass with a double-ended pen tool in this utility model can not only realize the function of a compass, but also realize the functions of a double-ended pen, a pen with one end and a tool, and a double-ended tool by setting the second compass support leg of the multifunctional compass as a connection between the pen sleeve and the double-ended pen tool. Both ends of the double-ended pen tool can be pens or tools. Furthermore, the user can choose the type of pen and the type of tool according to their needs to realize different functions. With this setting, by setting the double-ended pen tool in the compass, the pen and / or tool are cleverly combined into one compass, which not only expands the function of the compass, but also makes it easy to store and carry for use.

[0023] (2) By setting up a pencil lead-shaped tool and using the pencil lead-shaped tool in conjunction with pressing the inner core of a mechanical pencil, the function of a cutting knife, a needle, and other manual tools can be realized. During use, the double-ended pen tool or the entire multi-functional compass can serve as the grip of the manual tool, further expanding the function of the multi-functional compass with the double-ended pen tool.

[0024] (3) By setting a press-type mechanical pencil lead and setting an inner core tube in the press-type mechanical pencil lead, a storage cavity separated from the lead passage is formed in the press-type mechanical pencil lead. The pencil lead and the pencil lead-shaped part of the pencil lead-shaped tool can be inserted into the storage cavity, so that various pencil lead-shaped tools can be stored in the hollow core tube, which is convenient for storing various pencil lead-shaped tools and preventing loss. Moreover, when a user carries a double-ended pen tool with the press-type mechanical pencil lead, it is equivalent to carrying a pen and various manual tools, which greatly facilitates the user to carry and use it.

[0025] (4) The pencil lead-shaped part is inserted into the gripper that presses the inner lead of the mechanical pencil. If the gripper is in the open state, the pencil lead-shaped tool can rotate 360° relative to the gripper under the action of external force. When the user holds the pen with the pencil lead-shaped tool inserted but not clamped and strokes it across the surface of the object being cut (such as origami), the user can easily control the cutting direction of the blade by controlling the direction of the force applied by the hand, so as to form any desired cutting curve on the surface of the object being cut.

[0026] (5) The first compass leg can be used as a ruler and a wave ruler, and the second compass leg can be used as a ruler, further expanding the functionality of this multi-functional compass with a double-ended pen tool.

[0027] (6) It is also equipped with a protractor, and the protractor is ingeniously designed to measure angles, draw angles of a specific size, and easily draw circles or arcs of a specific radius, further expanding the function of this multifunctional compass with a double-ended pen tool. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the multifunctional compass with a double-ended pen tool of the present invention, wherein (a) is a schematic diagram of the structure of the multifunctional compass with a double-ended pen tool when used in a protractor, (b) is a schematic diagram of the structure of the multifunctional compass with a double-ended pen tool when used in a protractor at another angle, and (c) is a schematic diagram of the structure of the multifunctional compass with a double-ended pen tool when the protractor is stored.

[0029] Figure 2 This is an exploded structural diagram of the multifunctional compass with a double-ended pen tool according to this utility model.

[0030] Figure 3 This is a structural schematic diagram of the double-ended pen tool of this utility model.

[0031] Figure 4This is a schematic diagram of the structure of the press-type mechanical pencil lead of the present invention, wherein (a) is a schematic diagram of the structure of the press-type mechanical pencil lead, (b) is a cross-sectional schematic diagram of the press-type mechanical pencil lead when no pencil lead or pencil lead-shaped tool is installed in the storage cavity, and (c) is a cross-sectional schematic diagram of the press-type mechanical pencil lead when a pencil lead or pencil lead-shaped tool is installed in the storage cavity.

[0032] Figure 5 This is a schematic diagram of the structure of the pencil lead-shaped tool of this utility model.

[0033] Figure 6 This is a schematic diagram of the pressing component of this utility model.

[0034] Figure 7 This is a schematic diagram of the protractor of the present invention, wherein (a) is a schematic diagram of the structure of one surface of the protractor, and (b) is a schematic diagram of the structure of the other surface of the protractor.

[0035] Figure 8 This is a schematic diagram of the structure of the double-ended pen tool of this utility model, in which one end is equipped with a pressing mechanical pencil lead and the other end is equipped with a pressing pencil lead. (a) is a schematic diagram of the structure of the double-ended pen tool when the pressing protrusion is engaged with the first control step; (b) is an enlarged schematic diagram of point A in (a); (c) is a schematic diagram of the structure of the double-ended pen tool when the pressing protrusion is engaged with the third control step; and (d) is a schematic diagram of the structure of the double-ended pen tool when the pressing protrusion is located between the first control step and the second control step.

[0036] Figure 9 This is a cross-sectional view of the double-ended pen tool of the present invention, wherein one end is equipped with a pressing mechanical pencil lead and the other end is equipped with a pressing pencil lead. (a) is a cross-sectional view of the pressing protrusion of the double-ended pen tool cooperating with the third control step, and (b) is an enlarged view of point B in (a).

[0037] Figure 10 This is a cross-sectional view of the double-ended pen tool of this utility model, with a pressing mechanical pencil lead installed at one end and a light assembly installed at the other end, and the pressing protrusion engaging with the third control step.

[0038] Figure 11 This is a schematic diagram of the structure of the double-ended pen tool of this utility model, in which one end is equipped with a pressing mechanical pencil lead and the other end is equipped with a screwdriver. (a) is a schematic diagram of the structure of the double-ended pen tool when the pressing protrusion cooperates with the fourth control step, and (b) is an enlarged schematic diagram of point C in (a).

[0039] Explanation of reference numerals in the attached figures:

[0040] 10-Compass connector; 101-Receiving groove; 11-First compass leg; 111-First plane; 112-First straight edge; 113-Wave edge; 114-First length scale line; 115-Mounting groove; 116-Second rotating disk; 12-Second compass leg; 121-Second plane; 123-Second length scale line; 13-Positioning pin assembly; 131-Positioning pin; 132-Mounting base; 14-Connecting pen sleeve; 141-First fixing hole; 142-First rotating disk; 143-First... 15-Limiting post; 16-Pen clip; 17-Eraser; 17-Limiting plate; 171-Limiting groove; 2-Press mechanical pencil inner lead; 21-Hollow lead tube; 211-Lead passage; 212-Storage cavity; 22-Inner lead tube; 23-Claw component; 24-Third spring; 25-Binding ring; 26-Positioning sleeve; 261-Limiting component; 262-Positioning step; 263-Card ring; 27-Lead sleeve; 28-Tail plug; 3-Double-ended pen tool; 30-Storage hole; 31-Hollow pen barrel in the middle; 311-Second fixing hole; 3 12-Third plane; 32-Pen tip; 321-Snap-in slot; 33-Pressing assembly; 331-Moving cylinder; 332-Pressing protrusion; 333-Divider plate; 341-Pressing pen refill; 342-Screwdriver; 3441-Battery; 3442-Conductive spring; 3443-Neutral wire; 3444-LED bead; 3445-Metal sheet; 351-First control step; 352-Second control step; 353-Third control step; 354-Fourth control step; 36-First spring; 37-Second spring; 3 8-Through hole; 4-Pencil lead-shaped tool; 41-Pencil lead-shaped part; 42-Actuating part; 421-Blade part; 422-Pointed needle part; 5-Protractor; 51-First arc-shaped edge; 52-Second arc-shaped edge; 53-Second straight edge; 54-Angle scale line; 55-Third length scale line; 56-Radius scale line; 57-Radius length reference value; 58-First fixing post; 59-Second fixing post; 71-Threaded fastener; 711-Mounting hole; 72-Nut; 73-Fourth spring; 74-Needle body. Detailed Implementation

[0041] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0042] like Figures 1 to 11As shown, this embodiment discloses a multifunctional compass with a double-ended pen tool, including a compass connecting seat 10, and a first compass leg 11 and a second compass leg 12 rotatably connected to the compass connecting seat 10. The first compass leg 11 is provided with a positioning pin assembly 13 at one end away from the compass connecting seat 10. The second compass leg 12 includes a connecting pen sleeve 14 and a double-ended pen tool 3 detachably connected to the connecting pen sleeve 14. The end of the connecting pen sleeve 14 away from the double-ended pen tool 3 is rotatably connected to the compass connecting seat 10. One end of the double-ended pen tool 3 is a pen or tool, and the other end is also a pen or tool. The tool can be any one of a pencil lead-shaped tool 4, a screwdriver 342, a cutting knife, a needle-shaped tool, or a lamp assembly.

[0043] The multifunctional compass with a double-ended pen tool in this embodiment not only fulfills the functions of a compass, but also connects the pen sleeve 14 and the double-ended pen tool 3 by setting the second compass leg 12 of the multifunctional compass as a connector. Since both ends of the double-ended pen tool can be pens or tools, it can also function as a double-ended pen, a pen-and-tool combination, or a double-ended tool. Furthermore, users can choose the type of pen and tool according to their specific needs, thus meeting different usage requirements. In this embodiment, by incorporating the double-ended pen tool within the compass, the pen and / or tool are cleverly combined into a single compass, expanding the compass's functionality and facilitating storage and portability.

[0044] Furthermore, the double-ended pen tool 3 also includes a hollow pen barrel 31 in the middle and pen tips 32 detachably connected to both ends of the hollow pen barrel 31. A pressing component 33 is provided in the middle of the hollow pen barrel 31, and a through hole 38 is provided on the side wall of the hollow pen barrel 31 to cooperate with the pressing component 33. A first spring 36 is installed between one of the pen tips 32 and the pressing component 33, and presses any one of the following: mechanical pencil lead 2, pencil lead 341, screwdriver 342, cutting blade, needle-like tool, or lamp assembly. A second spring 37 is installed between the other pen tip 32 and the pressing component 33, and presses any one of the following: mechanical pencil lead 2, pencil lead 341, screwdriver 342, cutting blade, needle-like tool, or lamp assembly. Specifically, the pen tip 32 and the hollow pen barrel 31 are detachably connected by a snap-fit ​​mechanism. Of course, in other embodiments, the pen tip 32 and the hollow pen barrel 31 can also be connected by other detachable methods, such as a threaded connection. Preferably, a plurality of snap-fit ​​grooves 321 are provided on the outer peripheral wall of the pen tip 32, and a plurality of snap-fit ​​protrusions that mate with the snap-fit ​​grooves are provided on the inner side wall of the connecting pen sleeve 14. By inserting the pen tip 32 into the connecting pen sleeve 14, a detachable connection between the double-ended pen tool 3 and the connecting pen sleeve 14 is achieved.

[0045] In this embodiment, pen tips 32 are detachably provided at both ends of the hollow pen barrel 31, so that users can replace the pen or tool at both ends of the double-ended pen tool 3 according to actual usage needs. Furthermore, the pressing component 33, in conjunction with the first spring 36 and the second spring 37, controls the usage state of the pens or tools at both ends of the double-ended pen tool 3, i.e., the pressing component 33 serves as a switching mechanism. When the pressing component 33 moves, causing the first spring 36 to be compressed and the second spring 37 to be decompressed, the pen or tool at one end of the double-ended pen tool 3 protrudes to the outside of the corresponding pen tip 32 or is in the activated state, while the pen or tool at the other end retracts to the inside of the corresponding pen tip 32 or is in the deactivated state. When the pressing component 33 moves, causing the second spring 37 to be compressed and the first spring 36 to be decompressed, the pen or tool at one end of the double-ended pen tool 3 retracts to the inside of the corresponding pen tip 32 or is in the deactivated state, while the pen or tool at the other end protrudes to the outside of the corresponding pen tip 32 or is in the activated state. When neither the first spring 36 nor the second spring 37 is compressed, both pens or tools at both ends of the double-ended pen tool 3 retract to the inside of the corresponding pen tip 32 or are in the deactivated state.

[0046] Furthermore, the pen is any one of a pencil, mechanical pencil, fountain pen, ballpoint pen, oil-based pen, water-based pen, or gel pen; the pressable pen refill 341 is any one of a fountain pen refill, a ballpoint pen refill, an oil-based pen refill, a water-based pen refill, or a gel pen refill. Of course, in other embodiments, other types of pens or pressable pen refills 341 can be selected according to actual needs, and these will not be listed here.

[0047] Furthermore, such as Figure 4 As shown, the pressable mechanical pencil lead 2 includes a hollow lead cylinder 21. An inner lead tube 22 is provided at one end of the hollow lead cylinder 21. A storage cavity 212 is provided between the inner wall of the hollow lead cylinder 21 and the outer wall of the inner lead tube 22. The storage cavity 212 is annular and is used to store several pencil leads and / or several pencil lead-shaped tools 4. Since the length of the inner lead tube 22 is less than the length of the hollow lead cylinder 21, the end of the hollow lead cylinder 21 furthest from the pencil tip has a larger space to accommodate the lead. A pencil lead-shaped tool 4; an elastic clamping assembly is provided at one end of the hollow core cylinder 21 near the inner core tube 22, and a lead-passing channel 211 is provided through the inner core tube 22 and the elastic clamping assembly, the pencil lead or pencil lead-shaped tool 4 can be inserted into the lead-passing channel 211, and the elastic clamping assembly can switch between a state of clamping the pencil lead or pencil lead-shaped tool 4 and a state of releasing the pencil lead or pencil lead-shaped tool 4; a tail plug 28 is detachably provided at the end of the hollow core cylinder 21 away from the inner core tube 22. Preferably, as shown in the figure Figure 5As shown, the pencil lead-shaped tool 4 includes a pencil lead-shaped portion 41 and an action portion 42 disposed at one end of the pencil lead-shaped portion 41. The pencil lead-shaped portion 41 can be inserted into the lead passage 211. The action portion 42 is a blade portion 421 or a needle portion 422. The blade portion 421 may have a blade at its top, a blade on its side, or a blade at other locations. Of course, in other embodiments, the action portion 42 may also be other forms of hand tools, such as screwdrivers, wrenches, etc., which will not be listed here.

[0048] In this embodiment, by providing a pencil lead-shaped tool 4 and using it in conjunction with the mechanical pencil lead 2, the function of a cutting tool, a needle, or other manual tool is achieved. During use, the double-ended pen tool 3 or the entire multi-functional compass can serve as the grip for the manual tool, further expanding the functionality of the multi-functional compass with the double-ended pen tool. Furthermore, by providing an inner core tube 22 within the mechanical pencil lead 2, a storage cavity 212 separated from the lead passage 211 is formed within the mechanical pencil lead 2. Both the pencil lead and the pencil lead-shaped tool 4 can be inserted into the storage cavity 212, allowing various pencil lead-shaped tools 4 to be stored within the hollow core tube 21. This facilitates the storage of various pencil lead-shaped tools 4, prevents loss, and makes it convenient for users to carry and use them. Based on this, in order to ensure that the first spring 36 can be compressed under external pressure, the outer diameter of the hollow core cylinder 21 is larger than the outer diameter of the elastic clamping assembly. This allows the hollow core cylinder 21 to exert a squeezing force on the first spring 36 under the action of the external pressing force, thereby driving the first spring 36 to compress, so that the mechanical pencil lead 2 can be smoothly protruded from the corresponding pencil tip 32 for use.

[0049] In practical use, when a certain manual tool function is needed, such as a cutter, the pencil lead-shaped tool 4 with the cutter function is inserted into the mechanical pencil lead 2 to form a cutter. The double-ended pen tool 3 or the entire multi-functional compass serves as the grip, allowing the user to operate it and achieve the cutter function. When other manual tool functions are needed, the corresponding pencil lead-shaped tool 4 is also inserted into the mechanical pencil lead 2 to form a manual tool with that function. When the manual tool function is not needed, the pencil lead-shaped tool 4 can be removed from the mechanical pencil lead 2, and a lead from a conventional mechanical pencil can be inserted into the mechanical pencil lead 2 to achieve the pencil function.

[0050] Furthermore, such as Figure 4As shown, the elastic clamping assembly includes a gripper 23, a third spring 24, a retaining ring 25, a positioning sleeve 26, and a core sleeve 27. The gripper 23 is disposed at one end of the hollow core cylinder 21 near the inner core tube 22. The retaining ring 25 is movably sleeved on the outside of the gripper 23. The end of the gripper 23 away from the hollow core cylinder 21 and the retaining ring 25 are movably disposed inside the positioning sleeve 26. The end of the positioning sleeve 26 near the hollow core cylinder 21 is provided with a limit. Component 261, the positioning sleeve 26 is provided with the core sleeve 27 at one end away from the hollow core cylinder 21, the positioning sleeve 26 is provided with a positioning step 262 in the middle of the interior, the third spring 24 is sleeved on the outside of the gripper 23 and located between the positioning sleeve 26 and the hollow core cylinder 21; the positioning sleeve 26 is also provided with a locking ring 263 inside, the inner diameter of the locking ring 263 is slightly smaller than the diameter of the pencil lead and the diameter of the pencil lead-shaped part 41.

[0051] In this embodiment, the specific structure of the elastic clamping component in the mechanical pencil lead 2 is defined. Under the action of external force, the hollow core cylinder 21 drives the gripper 23 and the retaining ring 25 to move forward (towards the pencil tip). The third spring 24 is compressed. When the retaining ring moves to the position of the positioning step 262, due to the obstruction of the positioning step 262, the retaining ring 25 cannot continue to move forward with the hollow core cylinder 21 and the gripper 23. The gripper 23 separates from the retaining ring 25. Since the mating surface between the gripper 23 and the retaining ring 25 is a conical surface, multiple grippers in the gripper 23 that have separated from the retaining ring 25... When the claws separate, the pencil lead or pencil lead-shaped tool 4 is released. When the external force is removed, the third spring 24 returns, causing the hollow core cylinder 21 and the gripper 23 to move backward (away from the pencil tip). When the gripper 23 retracts into the retaining ring 25, it moves the retaining ring 25 backward as well. When the retaining ring 25 reaches the position of the limiting member 261, it stops moving, thus limiting the gripper 23 and the hollow core cylinder 21 from further retraction. Under the constraint of the retaining ring 25, the multiple grippers in the gripper 23 approach each other, thus clamping the pencil lead or pencil lead-shaped tool 4. Furthermore, by setting the locking ring 263, when the pencil lead-shaped tool 4 is not clamped by the gripper 23 in the mechanical pencil lead 2, it will not fall downward due to its own weight when there is no external force, making it easy to use.

[0052] Furthermore, such as Figure 5As shown, the central axis of the working part 42 is set at an angle to the central axis of the pencil lead-shaped part 41, and / or the cross-sectional area of ​​the working part 42 is larger than the cross-sectional area of ​​the pencil lead-shaped part 41. Specifically, the central axis of the blade part 421 is set at an angle to the central axis of the pencil lead-shaped part 41. In actual use, the pencil lead-shaped tool 4 with the blade part 421 has two usage states. In one usage state, the pencil lead-shaped part 41 is clamped and fixed by the claw 23 pressing the mechanical pencil lead 2. At this time, the pencil lead-shaped tool 4 with the blade part 421 and the double-ended pen tool 3 are combined to form a hand knife, which is convenient for the user to cut items such as origami. In the other usage state, the pencil lead-shaped part 41 is inserted into the claw 23 pressing the mechanical pencil lead 2, but the claw 23 is in an open state, that is, the claw 23 releases the pencil. Under external force, the lead-shaped part 41 can rotate 360° relative to the gripper 23. When the user holds the double-ended pen tool 3 with the lead-shaped part 4 inserted but not clamped, and strokes it across the surface of the object being cut (such as origami), the user can easily control the cutting direction of the blade part 421 by controlling the direction of the force applied by the hand, thus forming any desired cutting curve on the surface of the object. Furthermore, because the central axis of the blade part 421 is angled to the central axis of the lead-shaped part 41, although the lead-shaped part 41 is not clamped, the blade part 421 will not retract into the mechanical pencil lead 2 under external force. Of course, depending on the specific operation of different types of lead-shaped tools 4 in actual use, in some other embodiments, the central axis of the actuating part 42 and the central axis of the lead-shaped part 41 may also be coincident, such as... Figure 1 As shown, the central axis of the needle portion 422 coincides with the central axis of the pencil lead-shaped portion 41. Furthermore, in this embodiment, by setting the cross-sectional area of ​​the actuating portion 42 to be larger than the cross-sectional area of ​​the pencil lead-shaped portion 41, on the one hand, when the pencil lead-shaped tool 4 is not clamped by the gripper 23 in the mechanical pencil lead 2, it prevents the actuating portion 42 from retracting into the mechanical pencil lead under external force; on the other hand, it increases the strength of the actuating portion 42 and extends its service life.

[0053] Furthermore, such as Figure 6 , 8As shown in Figure -11, the pressing assembly 33 includes a movable cylinder 331 and a pressing protrusion 332 disposed on the outer wall of the movable cylinder 331. A partition plate 333 is disposed inside the movable cylinder 331. The pressing protrusion 332 passes through the through hole 38 and extends to the outer side of the central hollow pen barrel 31. The wall of the through hole 38 is provided with multiple control steps that cooperate with the pressing protrusion 332. In this embodiment, any one of the following is inserted into both ends of the movable cylinder 331: a pressing mechanical pencil lead 2, a pressing pencil lead 341, a screwdriver, a cutting blade, a needle-like tool, or a lamp assembly. When the pressing assembly 33 is pressed towards one end of the double-ended pen tool 3, the partition plate 333 applies force to the pen or tool at the corresponding end to achieve switching between the two ends of the double-ended pen tool. Furthermore, by providing multiple control steps that cooperate with the pressing protrusion 332, the double-ended pen tool 3 is kept in the switched state. Under the action of external force, the pressing component 33 can reciprocate along the axial direction of the hollow pen barrel 31 and reciprocate along the circumferential direction of the hollow pen barrel 31.

[0054] Furthermore, such as Figure 8-11As shown, the control steps include a first control step 351, a second control step 352, and a third control step 353. Specifically, the first control step 351, the second control step 352, and the third control step 353 are staggered relative to each other in the axial direction and the circumferential direction of the hollow pen barrel 31. In this embodiment, a double-ended pen tool 3 is equipped with a first spring 36 and a pressing mechanical pencil lead 2 at one end, and a second spring 37 and a pressing lead 341 at the other end. The screwdriver 342, the cutting blade, the needle-like tool, or any one of the lamp assembly are also used as examples to specifically describe the cooperative function between the pressing component 33 and the multiple control steps. When the pressing protrusion 332 and the first... When the control step 351 is engaged, the second spring 37 is compressed and the first spring 36 is not compressed. The mechanical pencil lead 2 retracts into the corresponding pencil tip 32, and the other end of the pressing lead 341, the screwdriver 342, the cutting blade, the needle-like tool, or the lamp assembly protrudes to a first position outside the corresponding pencil tip 32 or is in an activated state. When the pressing protrusion 332 engages with the second control step 352, the first spring 36 is compressed and the second spring 37 is not compressed. The mechanical pencil lead 2 protrudes to the outside of the corresponding pencil tip 32, and the other end of the pressing lead 341, the screwdriver 342, the cutting blade, the needle-like tool, or the lamp assembly retracts into the corresponding position. When the pencil tip 32 is inside or in a closed state, pressing the pressing component 33 vertically downwards will apply force to the third spring 24 in the mechanical pencil lead 20, thus pressing the mechanical pencil lead 20. When the pressing protrusion 332 engages with the third control step 353, the third spring 24 is compressed in addition to the first spring 36 being compressed, while the second spring 37 is not compressed. With the mechanical pencil lead 2 protruding to the outside of the corresponding pencil tip 32, the elastic clamping component is in a loose state, and the pencil lead-shaped tool 4 inserted into the mechanical pencil lead 2 can rotate 360° under the action of external force. At this time, when the user holds both hands... When the pen tool 3 allows the unclamped pencil lead-shaped tool 4 to glide across the surface of the object being cut (such as origami), the user can easily control the cutting direction of the blade 421 by controlling the direction of the force applied by the hand, so as to form any desired cutting curve on the surface of the object being cut; when the pressing protrusion 332 is located between the first control step 351 and the second control step 352, the first spring 36 is not compressed and the second spring 37 is not compressed, the pressing mechanical pencil lead 2 retracts into the corresponding pen tip 32, and the pressing lead 341 at the other end, the screwdriver 342, the cutting blade, the needle-shaped tool or the lamp assembly also retract into the corresponding pen tip 32 or are in a closed state.

[0055] Specifically, such as Figure 10 As shown, when the tool is a lamp assembly, the lamp assembly can be a lighting lamp assembly or a laser lamp assembly, or it can be other types of lamp assemblies. The lamp assembly includes, from the outside in, an LED bead 3444, a battery 3441, a conductive spring 3442, and a metal sheet 3445. The LED bead 3444 is either a lighting lamp bead or a laser lamp bead. The LED bead 3444 is fixed to the end of the corresponding pen tip 32 away from the central hollow pen barrel 31. The light-emitting end of the LED bead 3444 faces the outside of the double-ended pen tool 3, and the wiring terminal of the LED bead 3444 faces the inside of the central hollow pen barrel 31. The wiring terminal is connected to a neutral wire 3443 and a second spring 37. The second spring 37 is actually a live wire. The end of the neutral wire 3443 away from the LED bead 3444 extends into the central hollow pen barrel 31 and connects to the metal sheet 3445. The end of the second spring 37 away from the LED bead 3444 is suspended. The metal sheet 3445 is fixedly connected to the pressing assembly 33. One end of the conductive spring 3442 is fixed to the metal sheet 3445 and electrically connected. The battery 3441 is inserted into the pressing assembly. The battery 3441 is inserted into the pressing assembly 33, and one end of the battery 3441 is in contact with the conductive spring 3442 for conduction. The pressing assembly 33 is tightly fitted with the battery 3441. After the battery 3441 is inserted into the pressing assembly 33, a certain amount of force is required to pull it out to prevent the battery 3441 from shaking during use and to prevent the battery 3441 from separating from the conductive spring 3442. When the pressing assembly 33 moves the battery 3441 closer to the lamp bead 3444, the end of the battery 3441 will contact the suspended end of the second spring 37 and compress the second spring 37. The battery 3441 and the lamp bead 3444 will be connected, and the lamp bead 3444 will be turned on to realize the function of lighting or laser light. When the pressing assembly 33 moves the battery 3441 away from the lamp bead 3444, the end of the battery 3441 will separate from the suspended end of the second spring 37. The battery 3441 and the lamp bead 3444 will not be connected, and the lamp bead 3444 will be turned off.

[0056] Furthermore, the control step also includes a fourth control step 354; in this embodiment, taking a double-ended pen tool 3 with a first spring 36 and a pressing mechanical pencil lead 2 installed at one end, and a second spring 37 and any one of the screwdriver 342, the cutting blade, or the needle-like tool installed at the other end as an example, the cooperation between the pressing component 33 and the fourth control step is specifically described; when the pressing protrusion 332 cooperates with the fourth control step 354, the pressing mechanical pencil lead 2 retracts into the interior of the corresponding pen tip 32, and the screwdriver 342, the cutting blade, or the needle-like tool protrudes to a second position outside the corresponding pen tip 32, and the distance between the second position and the first control step 351 is greater than the distance between the first position and the first control step 351.

[0057] Specifically, such as Figure 11 As shown, the double-ended pen tool 3 has a mechanical pencil lead 2 attached to one end and a screwdriver 342 attached to the other end. Since the distance from the first position to the end of the corresponding pencil tip 32 is approximately 3mm (refer to the distance from the tip of the pressing lead 341 to the end of the corresponding pencil tip 32 when the pressing lead 341 protrudes outside the corresponding pencil tip 32), the distance to the first position is insufficient for the screwdriver 342, the cutting blade, or the needle-like tool to be used. Therefore, this embodiment provides a fourth control step 354. When the pressing protrusion 332 engages with the fourth control step 354, the second spring 37 is further compressed, causing the screwdriver 342, the cutting blade, or the needle-like tool to protrude outwards to the second position, facilitating their use.

[0058] Furthermore, such as Figure 1-2 As shown, the side of the first compass leg 11 opposite to the second compass leg 12 is set as a first plane 111, and the side of the second compass leg 12 opposite to the first compass leg 11 is set as a second plane 121. The first plane 111 and the second plane 121 can fit together. A first length scale line 114 is provided on the first plane 111, and a second length scale line 123 is provided on the second plane 121. In this embodiment, by providing length scale lines on the first plane 111 and the second plane 121, the first compass leg 11 and the second compass leg 12 can be used as a ruler, further expanding the function of this multifunctional compass with a double-ended pen tool.

[0059] Furthermore, the double-ended pen tool 3 has storage holes 30 at both ends on the side opposite to the first compass leg 11. The positioning pin assembly 13 includes a mounting base 132 and a positioning pin 131 disposed on the mounting base 132. The positioning pin 131 is set at an angle to the first compass leg 11, and the end of the positioning pin 131 away from the compass connecting seat 10 is set towards the double-ended pen tool 3. The positioning pin 131 can be inserted into the storage hole 30. The end of the first compass leg 11 away from the compass connecting seat 10 has a mounting groove 115, and the mounting base 132 can be detachably inserted into the mounting groove 115. Preferably, the side of the first compass leg 11 opposite to the first plane 111 is an arc-shaped surface, and the side of the second compass leg 12 opposite to the second plane 121 is also an arc-shaped surface. Thus, when the first plane 111 and the second plane 121 are fitted together, the first compass leg 11 and the second compass leg 12 combine to form a cylinder, facilitating the use of the entire multi-functional compass as a pen. Furthermore, the positioning pin 131 is inserted into the storage hole 30 to prevent the first compass leg 11 and the second plane 12 from being misaligned during pen use. The compass legs 12 are separated to prevent the positioning pin 131 from pricking the user, ensuring safe use. Furthermore, to facilitate the insertion of the positioning pin 131 into the storage hole 30, three locking grooves 321 are provided on the outer peripheral wall of the pen tip 32, and three locking protrusions that mate with the locking grooves are provided on the inner side wall of the connecting pen sleeve 14. When the multi-functional compass needs to be converted from compass mode to pen mode, first remove the double-ended pen tool 3 from the connecting pen sleeve 14, then insert a small portion of one pen tip 32 of the double-ended pen tool 3 into the connecting pen sleeve 14, and... Furthermore, rotating the first compass leg 11 and the second compass leg 12 causes the first plane 111 and the second plane 121 to fit together. Then, the double-ended pen tool 3 is pushed further towards the connecting pen sleeve 14, and the positioning pin 131 is inserted into the storage hole 30. The double-ended pen tool 3 is continued to be pushed until it can no longer be pushed. At this point, the corresponding pen tip 32 that is inserted into the connecting pen sleeve 14 has one or two locking grooves 321 that engage with the locking protrusion, meaning that part of the corresponding pen tip 32 is located outside the connecting pen sleeve 14, thus converting it into a pen state. When multifunctional... When the compass needs to be converted from pen mode to compass mode, first pull the double-ended pen tool 3 out of the connecting pen sleeve 14. At this time, the positioning pin 131 will come out of the storage hole 30. Rotate the first compass support leg 11 and the second compass support leg 12 to separate the first plane 111 and the second plane 121. Insert one pen tip 32 of the double-ended pen tool 3 completely into the connecting pen sleeve 14, so that the three locking slots 321 in the corresponding pen tip 32 that is inserted into the connecting pen sleeve 14 are engaged with the three locking protrusions, and it can be converted into compass mode.

[0060] Furthermore, such as Figure 1-2As shown, one side of the first compass leg 11 is a straight edge 112, and the other side is a wavy edge 113. The first length scale line 114 is also provided on the side of the first compass leg 11 away from the second compass leg 12. In this embodiment, by providing the first straight edge 112, the wavy edge 113, and the first length scale line 114 in the first compass leg 11, the first compass leg 11 can be used as both a ruler and a wavy ruler, thereby further expanding the functionality of this multifunctional compass with a double-ended pen tool.

[0061] Furthermore, such as Figure 1-2 As shown in Figure 7, it also includes a protractor 5, one surface of which is provided with an angle scale line 54; the protractor 5 can be detachably connected to at least one of the compass connecting seat 10, the first compass leg 11 or the second compass leg 12.

[0062] Furthermore, one side of the protractor 5 is a first arc-shaped side 51, and the other side of the protractor 5 is composed of a second arc-shaped side 52 and a second straight side 53 connected to each other. On the surface of the protractor 5 where the angle scale line 54 is provided, a third length scale line 55 is provided near the second straight side 53. The other surface of the protractor 5 is provided with a radius scale line 56 and a radius length comparison value 57 corresponding to the radius scale line 56.

[0063] Furthermore, such as Figure 1 and 2 As shown, it also includes a threaded fastener 71 and a nut 72. The threaded fastener 71 passes through the compass connecting seat 10, the first compass leg 11, and the second compass leg 12 and is threadedly connected to the nut 72. A mounting hole 711 is provided in the middle of the threaded fastener 71. A fourth spring 73 and a needle body 74 are disposed in the mounting hole 711. The needle body 74 is located at the end of the mounting hole 711 away from the nut 72, and protrudes beyond the threaded fastener 71 under the action of the fourth spring 73. Specifically, as... Figure 2As shown, a first rotating disk 142 is provided at one end of the pen cap 14 near the compass connecting seat 10, and a second rotating disk 116 parallel to the first rotating disk 142 is provided at one end of the first compass support leg 11 near the compass connecting seat 10. A first limiting post 143 is provided on the side of the first rotating disk 142 opposite to the second rotating disk 116, and a second limiting post (not shown in the figure) is provided on the side of the second rotating disk 116 opposite to the first rotating disk 142. The first rotating disk 142 and the second rotating disk 116... A limiting disk 17 is arranged parallel to each other, and a limiting groove 171 is provided on the limiting disk 17. A placement groove is provided on the compass connecting seat 10. During assembly, the first rotating disk 142, the second rotating disk 116, and the limiting disk 17 are first inserted into the placement groove together, and the first limiting post 143 and the second limiting post are inserted into the limiting groove 171. Then, the threaded fastener 71 is passed through the compass connecting seat 10, the first rotating disk 142, the limiting disk 17, the second rotating disk 116, and the compass connecting seat 10 in sequence, and then connected to the nut 72. In this embodiment, on the one hand, the tightness between the first compass support leg 11 and the second compass support leg 12 is adjusted by adjusting the threaded fastener 71 and the nut 72; on the other hand, the fourth spring 73 and the needle body 74 are provided to facilitate alignment with the vertex position of the angle during the drawing process.

[0064] In practical use, when an angle needs to be measured, simply remove the protractor and measure the angle using the angle scale 54; when an angle of a specific size needs to be drawn, first connect the protractor to the first compass leg 11 or the second compass leg 12, preferably to the second compass leg 12, such as... Figure 1 As shown in (a), the surface with the angle scale line 54 is facing the user. The needle body 74 is then aligned with the vertex. The position of the first compass leg 11 is adjusted according to the angle. Next, the threaded fastener 71 and nut 72 are adjusted to lock the first compass leg 11 and the second compass leg 12 together. The two sides of the angle are drawn using a pen based on the first plane 111 and the second plane 121. Since the first plane 111 has a first length scale line 114 and the second plane 121 has a second length scale line 123, it is easy to draw two sides of a specific length based on the scale. Then, the multi-functional compass is removed, and the line segments between the vertex and the two sides are completed, thus completing the drawing of an angle of a specific size. Furthermore, since the protractor 5 also has a second straight edge 53 and a third length scale line 55, the protractor 5 can also be used as a ruler. Also, since the protractor 5 also has a radius scale line 56 and a radius-length reference value 57, such as... Figure 7As shown in (b), the radius scale lines 56 have A, B, C, D, E, F, etc., and the radius length reference value 57 indicates the radius value corresponding to each radius scale line 56. This setting allows circles or arcs of a specific radius to be drawn without the need for an additional ruler. In specific operation, the protractor is connected to the second compass leg 12, as shown in (b). Figure 1 As shown in (b), depending on the required radius, if a circle or arc with a radius of 50mm needs to be drawn, according to the radius length reference value 57, the first compass leg 11 should be aligned with the "J" line in the radius scale line 56. After alignment, adjust the threaded fastener 71 and nut 72 to lock the first compass leg 11 and the second compass leg 12 together. Then, perform the circle drawing operation to draw a circle or arc with a radius of 50mm, making the circle or arc drawing operation simple and quick. Of course, if the radius of the required circle or arc is not in the radius length reference value 57, then the circle or arc can be drawn using the conventional circle drawing method. When the protractor 5 is not needed, it needs to be stored away. In this case, connect the protractor 5 vertically to the second compass leg 12, as shown... Figure 1 As shown in (c), this design allows for a smaller overall size of the multifunctional compass, making it easier to store and carry.

[0065] Furthermore, such as Figure 7 As shown, one surface of the protractor 5 is provided with at least two first fixing posts 58 spaced apart, and the other surface is provided with at least two second fixing posts 59 spaced apart. The connecting pen sleeve 14 is provided with a first fixing hole 141 that mates with the first fixing posts 58, and both ends of the double-ended pen tool 3 are provided with second fixing holes 311 that mate with the second fixing posts 59. In this embodiment, the protractor 5 and the multi-functional compass are detachably connected through the cooperation of the fixing posts and fixing holes. When it is necessary to draw an angle of a specific size or a circle or arc of a specific radius, the second fixing posts 59 are connected to the second fixing holes 311 in the double-ended pen tool 3. Figure 1 As shown in (a) and (b) in the figure; preferably, the two ends of the double-ended pen tool 3 are provided with a third plane 312 at the positions corresponding to the second fixing hole 311, so that when the second fixing post 59 is connected to the second fixing hole 311, the protractor 5 can fit against the third plane 312, ensuring the stable installation of the protractor 5; when the protractor 5 needs to be stored, the first fixing post 58 can be connected to the first fixing hole 141 in the connecting pen sleeve 14, as shown in (a) and (b) in the figure; Figure 1 As shown in (c) in the figure.

[0066] Furthermore, it also includes a pen clip 15 and an eraser 16. The pen clip 15 is disposed at one end of the first compass leg 11 near the compass connecting seat 10. The top of the compass connecting seat 10 is provided with a receiving groove 101, and the eraser 16 is disposed in the receiving groove 101. In this embodiment, by providing the pen clip 15, the multifunctional compass with a double-ended pen tool can be clipped onto the user's clothing or notebook for easy carrying; by providing the eraser 16, it is easy to erase pencil marks.

[0067] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multifunctional compass with a double-ended pen tool, comprising a compass connecting seat (10), and a first compass leg (11) and a second compass leg (12) rotatably connected to the compass connecting seat (10), wherein a positioning pin assembly (13) is provided at the end of the first compass leg (11) away from the compass connecting seat (10); characterized in that: The second compass leg (12) includes a connecting pen sleeve (14) and a double-ended pen tool (3) detachably connected to the connecting pen sleeve (14). The end of the connecting pen sleeve (14) away from the double-ended pen tool (3) is rotatably connected to the compass connecting seat (10). One end of the double-ended pen tool (3) is a pen or tool, and the other end is also a pen or tool. The tool is any one of a pencil lead-shaped tool (4), a screwdriver (342), a cutting knife, a needle-shaped tool, or a lamp assembly.

2. A multifunctional compass with a double-ended pen tool according to claim 1, characterized in that: The double-ended pen tool (3) further includes a hollow pen barrel (31) and pen tips (32) detachably connected to both ends of the hollow pen barrel (31). A pressing component (33) is provided in the middle of the hollow pen barrel (31), and a through hole (38) is provided on the side wall of the hollow pen barrel (31) to cooperate with the pressing component (33). A first spring (36) is installed between one of the pen tips (32) and the pressing component (33) to press the mechanical pencil lead (2), the pencil lead (341), the screwdriver, the cutting knife, the needle tool, or the lamp assembly. A second spring (37) is installed between the other pen tip (32) and the pressing component (33) to press the mechanical pencil lead (2), the pencil lead (341), the screwdriver, the cutting knife, the needle tool, or the lamp assembly.

3. A multifunctional compass with a double-ended pen tool according to claim 2, characterized in that: The pen is any one of a pencil, mechanical pencil, fountain pen, ballpoint pen, oil-based pen, water-based pen, or gel pen; the pressable pen refill (341) is any one of a fountain pen refill, a ballpoint pen refill, an oil-based pen refill, a water-based pen refill, or a gel pen refill.

4. A multifunctional compass with a double-ended pen tool according to claim 3, characterized in that: The pressable mechanical pencil lead (2) includes a hollow lead cylinder (21), with an inner lead tube (22) provided at one end inside the hollow lead cylinder (21). A storage cavity (212) is provided between the inner wall of the hollow lead cylinder (21) and the outer wall of the inner lead tube (22). The storage cavity (212) is used to store a number of pencil leads and / or a number of pencil lead-shaped tools (4). An elastic clamping assembly is provided at one end of the hollow lead cylinder (21) near the inner lead tube (22). A lead passage (211) is provided through the inner core tube (22) and the elastic clamping assembly. The pencil lead or pencil lead-shaped tool (4) can be inserted into the lead passage (211). The elastic clamping assembly can switch between a state of clamping the pencil lead or pencil lead-shaped tool (4) and a state of releasing the pencil lead or pencil lead-shaped tool (4). A tail plug (28) is detachably provided at the end of the hollow core tube (21) away from the inner core tube (22).

5. A multifunctional compass with a double-ended pen tool according to claim 4, characterized in that: The pencil lead-shaped tool (4) includes a pencil lead-shaped part (41) and an action part (42) disposed at one end of the pencil lead-shaped part (41). The pencil lead-shaped part (41) can be inserted into the lead channel (211). The action part (42) is a blade part (421) or a needle part (422).

6. A multifunctional compass with a double-ended pen tool according to claim 5, characterized in that: The elastic clamping assembly includes a gripper (23), a third spring (24), a retaining ring (25), a positioning sleeve (26), and a core sleeve (27). The gripper (23) is disposed at one end of the hollow core cylinder (21) near the inner core tube (22). The retaining ring (25) is movably sleeved on the outside of the gripper (23). The end of the gripper (23) away from the hollow core cylinder (21) and the retaining ring (25) are movably disposed inside the positioning sleeve (26). The end of the positioning sleeve (26) near the hollow core cylinder (21) is provided with a limit. The positioning sleeve (26) is provided with a core sleeve (27) at one end away from the hollow core cylinder (21). A positioning step (262) is provided in the middle of the positioning sleeve (26). The third spring (24) is sleeved on the outside of the gripper (23) and located between the positioning sleeve (26) and the hollow core cylinder (21). A locking ring (263) is also provided inside the positioning sleeve (26). The inner diameter of the locking ring (263) is slightly smaller than the diameter of the pencil lead and the diameter of the pencil lead-shaped part (41).

7. A multifunctional compass with a double-ended pen tool according to claim 5, characterized in that: The pressing assembly (33) includes a movable cylinder (331) and a pressing protrusion (332) disposed on the outer wall of the movable cylinder (331). The movable cylinder (331) is provided with a partition plate (333). The pressing protrusion (332) passes through the through hole (38) and extends to the outside of the hollow pen barrel (31). The hole wall of the through hole (38) is provided with a plurality of control steps that cooperate with the pressing protrusion (332).

8. A multifunctional compass with a double-ended pen tool according to any one of claims 1-7, characterized in that: The side of the first compass leg (11) opposite to the second compass leg (12) is set as a first plane (111), and the side of the second compass leg (12) opposite to the first compass leg (11) is set as a second plane (121). The first plane (111) and the second plane (121) can fit together. A first length scale line (114) is provided on the first plane (111), and a second length scale line (123) is provided on the second plane (121).

9. A multifunctional compass with a double-ended pen tool according to claim 8, characterized in that: The double-ended pen tool (3) has storage holes (30) at both ends on the side opposite to the first compass leg (11). The positioning pin assembly (13) includes a mounting base (132) and a positioning pin (131) on the mounting base (132). The positioning pin (131) is set at an angle to the first compass leg (11), and the end of the positioning pin (131) away from the compass connecting seat (10) is set towards the double-ended pen tool (3). The positioning pin (131) can be inserted into the storage hole (30). The end of the first compass leg (11) away from the compass connecting seat (10) is provided with a mounting groove (115), and the mounting base (132) can be detachably inserted into the mounting groove (115).

10. A multifunctional compass with a double-ended pen tool according to claim 8, characterized in that: One side of the first compass leg (11) is a first straight edge (112), and the other side is a wavy edge (113). The first length scale line (114) is also provided on the side of the first compass leg (11) away from the second compass leg (12).

11. A multifunctional compass with a double-ended pen tool according to claim 8, characterized in that: It also includes a protractor (5), one surface of which is provided with angle scale lines (54); the protractor (5) is detachably connected to at least one of the compass connector (10), the first compass leg (11) or the second compass leg (12).

12. A multifunctional compass with a double-ended pen tool according to claim 11, characterized in that: One side of the protractor (5) is a first arc-shaped side (51), and the other side of the protractor (5) is composed of a second arc-shaped side (52) and a second straight side (53) connected to each other. On the surface of the protractor (5) where the angle scale line (54) is provided, a third length scale line (55) is provided near the second straight side (53). On the other surface of the protractor (5), a radius scale line (56) and a radius length comparison value (57) corresponding to the radius scale line (56) are provided.

13. A multifunctional compass with a double-ended pen tool according to claim 11, characterized in that: It also includes a threaded fastener (71) and a nut (72). The threaded fastener (71) passes through the compass connector (10), the first compass leg (11) and the second compass leg (12) and is threadedly connected to the nut (72). The threaded fastener (71) has a mounting hole (711) in the middle. A fourth spring (73) and a needle body (74) are provided in the mounting hole (711). The needle body (74) is located at the end of the mounting hole (711) away from the nut (72). The needle body (74) protrudes out of the threaded fastener (71) under the action of the fourth spring (73).

14. A multifunctional compass with a double-ended pen tool according to claim 11, characterized in that: The protractor (5) has at least two first fixing posts (58) spaced apart on one surface and at least two second fixing posts (59) spaced apart on the other surface. The connecting pen sleeve (14) has a first fixing hole (141) that mates with the first fixing post (58). Both ends of the double-ended pen tool (3) have a second fixing hole (311) that mates with the second fixing post (59).

15. A multifunctional compass with a double-ended pen tool according to any one of claims 1-7, characterized in that: It also includes a pen clip (15) and an eraser (16). The pen clip (15) is disposed at one end of the first compass leg (11) near the compass connecting seat (10). The top of the compass connecting seat (10) is provided with a receiving groove (101), and the eraser (16) is disposed in the receiving groove (101).

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