A pen type compass

Abstract

The application discloses a pen type compass, which comprises a compass seat, a pen barrel and a positioning rod, the pen barrel is provided with an engaging part matched with the positioning rod, the pen barrel comprises a connecting rod and a pen barrel, the pen barrel is slidably connected with the connecting rod to realize telescopic extension, when the pen barrel is slidably extended relative to the connecting rod, the engaging part is extended to be matched with the positioning rod, the positioning rod is connected with the engaging part through rotation to realize writing function, a lock catch is arranged between the connecting rod and the pen barrel, when the positioning rod is rotated to be separated from the engaging part, the pen barrel can be slidably retracted relative to the connecting rod and locked through the lock catch to realize compass function, the user can realize switching between the writing function and the compass function through simple sliding and rotating operation, the lock catch is additionally arranged to ensure the stability of the pen barrel when the compass function is used, and the use stability of the overall structure is improved.

Description

Technical Field

[0001] This application relates to the field of stationery technology, and more specifically to a pen-shaped compass. Background Technology

[0002] Traditional compasses typically consist of a compass base and two legs. One leg has a needle for positioning, and the other leg is used to attach a pencil or pen for drawing. The two legs are connected by a hinge at the top, and the radius of the circle is determined by adjusting the distance between the legs. However, traditional compasses have some obvious limitations, such as their large size, inconvenience in carrying, and tendency to take up too much space in a pencil case. Furthermore, the needle and pen tip of a traditional compass are easily exposed during transport, posing a safety hazard and potentially leading to damage to the needle or pen tip. The pen-shaped compass, on the other hand, is an innovative design that combines the shape of a compass with that of a pen. Its optimized structure allows the two legs to fold tightly together when not in use, forming a pen-like appearance, significantly reducing its size and making it easier to carry and store. This design not only improves the compass's portability but also enhances its aesthetics.

[0003] For example, Chinese utility model patent CN210501985U discloses a concealed compass pen, including an upper rod and a lower rod. The bottom end of the lower rod is threaded with a pen tip. One side of the upper rod has a first slot. The top of the first slot is movably connected to a first folding leg via a first pin. The inner side of the first folding leg has an integrally formed second slot. The inner side of the second slot and near the bottom end of the first folding leg is movably connected to a second folding leg via a second pin. The end of the second folding leg away from the second pin has a third slot. The inner side of the third slot is movably connected to a third folding leg via a third pin. A steel needle is fixed to the end of the third folding leg. This technical solution integrates the functions of a pen and a compass into one through the structural design of the upper and lower rods. The folding legs allow the entire tool to be folded and stored when not in use, taking up little space and making it easy to carry and store. The needles are hidden at the ends of the folding legs. When the compass pen is not in use, the needles are folded and stored, avoiding the risk of scratches from exposed needles and protecting the needles themselves from damage or wear during transport. However, the needles are connected by multiple folding legs, involving multiple moving connection points, such as the first, second, and third pins. Therefore, the stability of the needles is relatively poor, and they are prone to shaking and displacement during use, resulting in poor positioning accuracy. Furthermore, the operation is relatively complex, requiring the sequential unfolding of the first, second, and third folding legs and adjustment of the unfolding angle of the first folding leg. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a pen-shaped compass. This pen-shaped compass has a telescopic pen barrel, which allows the user to switch between writing and compass functions through simple sliding and rotating operations. The addition of a locking buckle ensures the stability of the pen holder when using the compass function, reduces the number of moving connection points, and thus improves the overall structural stability.

[0005] This application provides a pen-shaped compass, including a compass base, a pen barrel and a positioning rod rotatably connected to the compass base, the pen barrel having a joint portion adapted to the positioning rod, the pen barrel including a connecting rod and a pen holder, the pen holder being slidably connected to the connecting rod to achieve extension and retraction, when the pen holder slides out relative to the connecting rod, the joint portion extends to adapt to the positioning rod, the positioning rod is connected to the joint portion by rotation to achieve writing function, a latch is provided between the connecting rod and the pen holder, when the positioning rod rotates and disengages from the joint portion, the pen holder can slide back relative to the connecting rod and be locked by the latch to achieve compass function.

[0006] In this technical solution, the pen barrel engages with a positioning rod via a joint. The positioning rod rotates to connect with the joint, forming a pen-shaped structure with the pen barrel, enabling the pen barrel to write independently. The positioning rod rotates to disengage from the joint, allowing the pen barrel and positioning rod to function as a compass. The pen barrel is constructed by a pen holder and a connecting rod that slide together. The relative sliding extension and retraction of the pen holder and connecting rod allows the length of the pen barrel and connecting part to be extended or shortened. When the pen holder slides out relative to the connecting rod, the length of the connecting part extends to the same length as the positioning rod. The pen barrel can completely retract the positioning rod through the connecting part, enabling the pen barrel to write independently and ensuring that the positioning rod does not interfere with the pen holder's writing. When the pen holder slides back relative to the connecting rod, the length of the pen holder shortens to the same length as the positioning rod. The pen holder and positioning rod then engage... This tool integrates the functions of a pen and compass into one, and its telescopic pen barrel design allows users to switch between writing and compass functions with simple sliding and rotating operations. This simplifies operation, reduces steps, and improves efficiency. A locking mechanism between the connecting rod and the pen barrel ensures the barrel remains aligned with the positioning rod during compass use, preventing accidental extension and enhancing reliability. Furthermore, the pen barrel has only one rotating connection point and one sliding connection point, while the positioning rod has only one rotating connection point, reducing the number of moving points and improving overall structural stability. The positioning rod provides more stable support during compass use, thus improving drawing accuracy.

[0007] As an improvement, the latch is rotatably mounted on the connecting rod, and the pen holder has a latching position that matches the latch. The latch is engaged or disengaged from the latching position by rotation. In this technical solution, the latch is mounted on the connecting rod by rotation, allowing it to engage or disengage from the latching position on the pen holder. The cooperation between the latch and the latching position provides a stable locking function, ensuring that the pen holder will not accidentally slide out during use. Users can easily lock or release the pen holder by simply rotating the latch, making operation simpler and faster. This allows for quick switching between writing and compass functions, improving tool efficiency and reducing operation time.

[0008] As an improvement, the joint is provided with a mounting groove that matches the latch, the latch is rotatably connected to the mounting groove, and the surface of the latch is flush with the surface of the joint; a first reset elastic element is installed between the mounting groove and the latch. In this technical solution, the latch is installed on the joint, located between the pen barrel and the positioning rod. The latch is positioned inside the pen barrel to prevent accidental operation by the user, improving the safety and reliability of the tool. The latch is rotatably installed in the mounting groove, making installation simple and reliable. The latch surface is flush with the joint surface when not under pressure, ensuring the joint surface remains flat after installation. This prevents interference with the positioning rod when the joint engages with it, allowing the positioning rod to form a complete pen shape with the pen barrel and reducing accidental interference from external forces. A first reset elastic element, typically a spring, is installed between the mounting groove and the latch. This simple and reliable structure automatically returns the latch to its initial position after the external force disappears, ensuring accurate engagement or disengagement. Users can easily lock or release the latch with simple operation, greatly improving ease of use.

[0009] As an improvement, the pen holder is equipped with a sliding rod, which has an opening for a connecting rod to pass through. The connecting rod passes through the opening to slidably engage with the sliding rod, and a fastener is provided on the sliding rod. In this technical solution, the pen holder is slidably connected to the connecting rod via the sliding rod. The opening on the sliding rod allows the connecting rod to pass through and slidably engage with the sliding rod. Through the sliding engagement of the sliding rod and the connecting rod, the pen holder's telescopic function is achieved, making the telescopic operation of the pen holder smoother and more reliable. This reduces direct friction between components, lowers wear caused by frequent operation, and extends the tool's lifespan. The fastener is provided on the sliding rod, and through the engagement of the fastener and the locking buckle, the pen holder's locking function is achieved, ensuring the stability of the pen holder when using the compass function and preventing accidental slippage during drawing.

[0010] As an improvement, the connecting rod is equipped with a limiting buckle, and the sliding rod is equipped with a first slide rail adapted to the limiting buckle. The limiting buckle and the first slide rail are slidably connected to limit the sliding range of the sliding rod. In this technical solution, the connecting rod is connected to the first slide rail on the sliding rod through the limiting buckle. The first slide rail provides a sliding path for the limiting buckle, allowing the sliding rod to slide back and forth relative to the connecting rod. This reduces shaking or loosening caused by external forces, making the sliding of the sliding rod smoother and more reliable. At the same time, it ensures that the sliding range is limited to a predetermined range, preventing the sliding rod from sliding out of the predetermined range, ensuring that the pen holder will not accidentally fall off during extension and retraction, and improving the stability and reliability of the tool.

[0011] As an improvement, the connecting rod is provided with an elastic arm, and the limiting buckle is set on the elastic arm. The limiting buckle passes through the opening and connects to the first slide rail through the elastic action of the elastic arm. In this technical solution, an elastic arm is provided on the connecting rod. The elastic arm has a certain elasticity, can deform under the action of external force, and return to its original shape after the force is removed. The limiting buckle is set on the elastic arm. Through the elastic action of the elastic arm, the limiting buckle can pass through the opening on the sliding rod and be inserted into the sliding rod. After the elastic arm returns to its original shape, it connects to the first slide rail. The installation of the sliding rod and the connecting rod is simpler and more reliable, and the stability of the overall pen barrel structure is improved.

[0012] As an improvement, a second reset elastic element is installed inside the sliding rod. This second reset elastic element abuts against the connecting rod. When the latch is unlocked, the pen holder extends relative to the connecting rod by sliding through the second reset elastic element. In this technical solution, the second reset elastic element is installed inside the sliding rod, and it abuts against the connecting rod to provide sufficient elastic force. When the latch is unlocked, the second reset elastic element provides elastic force, pushing the sliding rod to slide relative to the connecting rod, ensuring the pen holder can extend automatically. This reduces operating steps and improves convenience and efficiency.

[0013] As an improvement, the bottom of the positioning rod is provided with a pin, and the joint is provided with a receiving groove adapted to the pin. In this technical solution, the bottom of the positioning rod is provided with a pin, which is a key component of the compass function and is used to locate the center point of the circle. The receiving groove is provided in the joint, and the shape and size of the receiving groove match the pin, ensuring that the pin can be stably inserted into the receiving groove, realizing a tight fit between the positioning rod and the joint, so that the positioning rod and the pen barrel form a complete pen shape, preventing the pin from being exposed during carrying or use, reducing the risk of scratches caused by exposed pins, improving the safety of the tool, and extending the service life of the pin.

[0014] As an improvement, the positioning rod is provided with a positioning protrusion, and the joint is provided with a positioning groove that matches the positioning protrusion. In this technical solution, the positioning protrusion is a protruding part of the positioning rod, used to cooperate with the positioning groove of the joint. The shape and size of the positioning groove match the positioning protrusion, ensuring that the positioning protrusion can be accurately inserted and fixed in the positioning groove. This allows the positioning rod and the joint to be connected quickly and accurately, and prevents the positioning rod from loosening or shifting during storage, thus improving the stability and reliability of the entire tool.

[0015] As an improvement, the positioning protrusion is located at the bottom of the positioning rod for mounting the pin, and the positioning groove communicates with the receiving groove. In this technical solution, the positioning protrusion is set at the bottom of the positioning rod for mounting the pin, so that the pin can be stably fixed on the positioning rod, ensuring the stability of the pin during use. At the same time, the positioning protrusion cooperates with the positioning groove of the joint to achieve a stable connection between the positioning rod and the joint. The communication design between the positioning groove and the receiving groove allows the pin to be smoothly inserted into the receiving groove, making the connection between the positioning rod and the joint simpler and easier to store.

[0016] As an improvement, an automatic lead assembly is installed inside the pen holder. This assembly includes a push-button cap, and the pen holder has a second slide rail slidably connected to the push-button cap. The push-button cap slides within the second slide rail under pressure to extend the lead. In this technical solution, by installing an automatic lead assembly inside the pen holder, the pen achieves writing and drawing functions through the assembly. The push-button cap is the main component for user operation; pressing the cap extends the lead. The push-button cap is installed within the second slide rail on the side wall of the pen holder. The second slide rail allows the push-button cap to slide under pressure, extending the lead. This simple and quick operation reduces the hassle of manually adjusting the lead and improves the efficiency of the tool. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a pen-shaped compass used for writing, according to this application.

[0018] Figure 2 This is a three-dimensional structural diagram of a pen-type compass used in this application when performing compass functions.

[0019] Figure 3 This is an exploded view of the structure of a pen-shaped compass according to this application.

[0020] Figure 4 This is a three-dimensional structural diagram of the connecting rod in this application.

[0021] Figure 5 This is a three-dimensional structural diagram of the sliding rod in this application.

[0022] Figure 6 This is a three-dimensional structural diagram of the pen barrel in this application.

[0023] The figure shows: 1. Compass seat; 2. Pen barrel; 21. Joint; 211. Mounting groove; 212. First reset elastic element; 22. Connecting rod; 221. Limiting buckle; 222. Elastic arm; 23. Pen holder; 231. Buckle; 232. Second slide rail; 233. Receiving groove; 234. Positioning groove; 235. Sliding rod; 2351. Opening; 2352. First slide rail; 2353. Second reset elastic element; 24. Lock; 3. Positioning rod; 31. Pin; 32. Positioning protrusion; 4. Automatic pencil assembly; 41. Press cap. Detailed Implementation

[0024] To better understand this application, various aspects of this application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0025] In the accompanying drawings, the thickness, size, and shape of the objects have been slightly exaggerated for illustrative purposes. The drawings are for illustrative purposes only and are not drawn to scale.

[0026] It should also be understood that the terms "comprising," "including," "having," "containing," and "including," when used in this specification, indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (the specific types and constructions may be the same or different), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0027] Furthermore, it should be noted that the terms "installation," "setting," "equipped with," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components; they can refer to a direct installation on another component or the possible presence of another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] like Figures 1 to 6 As shown, this application discloses a pen-shaped compass, including a compass seat 1. The compass seat 1 is rotatably connected to a pen barrel 2 and a positioning rod 3. The pen barrel 2 is provided with a joint 21 adapted to the positioning rod 3. The pen barrel 2 cooperates with the positioning rod 3 through the joint 21. The positioning rod 3 is rotatably connected to the joint 21 to form a pen-shaped structure with the pen barrel 2, so that the pen barrel 2 can realize an independent writing function. The positioning rod 3 is rotatably disengaged from the joint 21, so that the pen barrel 2 and the positioning rod 3 can cooperate to realize the compass function.

[0029] The pen barrel 2 includes a connecting rod 22 and a pen holder 23. The pen holder 23 is slidably connected to the connecting rod 22 to achieve telescopic extension. The pen barrel 2 is composed of the pen holder 23 and the connecting rod 22. Through the relative sliding extension and retraction of the pen holder 23 and the connecting rod 22, the length of the pen barrel 2 and the connecting part can be extended or shortened. By sliding the pen holder 23 relative to the connecting rod 22, the length of the connecting part is extended to be the same as the length of the positioning rod 3. The pen barrel 2 can completely accommodate the positioning rod 3 through the connecting part, so that the pen barrel 2 can realize the independent writing function and ensure that the positioning rod 3 will not interfere with the writing of the pen holder 23. By sliding the pen holder 23 relative to the connecting rod 22, the length of the pen holder 23 is shortened to be the same as the length of the positioning rod 3. The pen holder 23 and the positioning rod 3 can realize the compass function. The functions of pen and compass are integrated into one tool. With the telescopic pen barrel 2 design, users can switch between writing function and compass function by simple sliding and rotating operations. The operation is simple and quick, reducing operation steps and improving the efficiency of tool use.

[0030] A latch 24 is provided between the connecting rod 22 and the pen holder 23. By setting the latch 24 between the connecting rod 22 and the pen holder 23, the latch 24 is used to lock the pen holder 23 in the sliding retracted state, ensuring that the pen holder 23 always maintains the same length as the positioning rod 3 when using the compass function, preventing it from accidentally sliding out, and improving the reliability of the pen holder 23. In addition, the pen rod 2 has only one rotating connection point and one sliding connection point, and the positioning rod 3 has only one rotating connection point, reducing the number of moving connection points, thereby improving the stability of the overall structure. When using the compass function, the positioning rod 3 can provide more stable support, thereby improving the accuracy of drawing.

[0031] More specifically, such as Figure 2 and Figure 6 As shown, the latch 24 is rotatably mounted on the connecting rod 22. The pen holder 23 is provided with a latch 231 that matches the latch 24. The latch 24 is connected or disengaged from the latch 231 by rotation. The latch 24 is mounted on the connecting rod 22 by rotation, so that the latch 24 is connected or disengaged from the latch 231 on the pen holder 23 by rotation. The cooperation between the latch 24 and the latch 231 provides a stable locking function, ensuring that the pen holder 23 will not accidentally slide out during use. Users can lock or release the pen holder 23 by simply rotating the latch 24, making the operation simpler and faster. It enables quick switching between writing and compass functions, improves the efficiency of tool use, and reduces operation time.

[0032] More specifically, such as Figure 2 , Figure 4 and Figure 6 As shown, the joint 21 is provided with a mounting groove 211 that matches the latch 24. The latch 24 is rotatably connected to the mounting groove 211. The surface of the latch 24 is flush with the surface of the joint 21. The latch 24 is installed on the joint 21. The latch 24 is located between the pen barrel 2 and the positioning rod 3. The latch 24 is located on the inner side of the pen barrel 2 to prevent the user from accidentally operating the latch 24 during use, thereby improving the safety and reliability of the tool. The latch 24 is rotatably installed in the mounting groove 211. The installation of the latch 24 is simple and reliable. The latch 24 is flush with the surface of the joint 21 when it is not under pressure, so that the surface of the joint 21 remains flat after the latch 24 is installed. This ensures that when the joint 21 is engaged with the positioning rod 3, the latch 24 will not interfere with the positioning rod 3, so that the positioning rod 3 can form a complete pen shape with the pen barrel 2, and can reduce the accidental interference of external forces on the latch 24.

[0033] More specifically, such as Figure 2 , Figure 4 and Figure 6As shown, a first reset elastic element 212, usually a spring, is installed between the mounting groove 211 and the latch 24. The structure is simple and reliable. The function of the first reset elastic element 212 is to automatically restore the latch 24 to the initial position after the external force disappears, ensuring that the latch 24 can accurately connect or disengage from the latch position 231. Users can lock or release with simple operation, which greatly improves the convenience of operation.

[0034] More specifically, such as Figures 3 to 6 As shown, the pen holder 23 is provided with a sliding rod 235, and the sliding rod 235 has an opening 2351 for the connecting rod 22 to pass through. The connecting rod 22 passes through the opening 2351 to slide and engage with the sliding rod 235. A fastener 231 is provided on the sliding rod 235. The pen holder 23 is slidably connected to the connecting rod 22 through the sliding rod 235. The opening 2351 on the sliding rod 235 allows the connecting rod 22 to pass through the opening 2351 and slide and engage with the sliding rod 235. Through the sliding engagement of the sliding rod 235 and the connecting rod 22, the pen holder 23 achieves its telescopic function. The operation is smoother and more reliable, reducing direct friction between parts, reducing wear caused by frequent operation, and extending the tool's service life. The latch 231 is set on the sliding rod 235. Through the cooperation of the latch 231 and the lock 24, the locking function of the pen holder 23 is realized, ensuring the stability of the pen holder 23 when using the compass function and preventing the pen holder 23 from accidentally sliding during the drawing process. The sliding rod 235 and the pen holder 23 are connected by a tight fit, which is simple and reliable. It should be noted that in this application, the connecting rod 22, the sliding rod 235 and the side wall of the pen holder 23 are connected to form a joint 21.

[0035] More specifically, such as Figures 4 to 6 As shown, the connecting rod 22 is provided with a limiting buckle 221, and the sliding rod 235 is provided with a first slide rail 2352 adapted to the limiting buckle 221. The limiting buckle 221 and the first slide rail 2352 are slidably connected to limit the sliding range of the sliding rod 235. The connecting rod 22 is connected to the first slide rail 2352 on the sliding rod 235 through the limiting buckle 221. The first slide rail 2352 provides a sliding path for the limiting buckle 221, so that the sliding rod 235 can slide back and forth relative to the connecting rod 22, reducing the shaking or loosening caused by external force, making the sliding of the sliding rod 235 smoother and more reliable. At the same time, it ensures that the sliding range is limited to a predetermined range, preventing the sliding rod 235 from sliding out of the predetermined range, ensuring that the pen holder 23 will not accidentally fall off during the extension and retraction process, and improving the stability and reliability of the tool.

[0036] More specifically, such as Figure 4 and Figure 6As shown, the connecting rod 22 is provided with an elastic arm 222, and a limiting buckle 221 is provided on the elastic arm 222. The limiting buckle 221 passes through the opening 2351 and connects to the first slide rail 2352 through the elastic action of the elastic arm 222. In this technical solution, an elastic arm 222 is provided on the connecting rod 22. The elastic arm 222 has a certain elasticity and can deform under the action of external force and return to its original shape after the force disappears. The limiting buckle 221 is provided on the elastic arm 222. Through the elastic action of the elastic arm 222, the limiting buckle 221 can pass through the opening 2351 on the sliding rod 235 and be inserted into the sliding rod 235. After the elastic arm 222 returns to its original shape, it is connected to the first slide rail 2352. The installation of the sliding rod 235 and the connecting rod 22 is simpler and more reliable, which improves the overall stability of the pen barrel 2.

[0037] More specifically, such as Figure 3 and Figure 6 As shown, a second reset elastic element 2353 is installed inside the sliding rod 235. The second reset elastic element 2353 abuts against the connecting rod 22. When the latch 24 is unlocked by force, the pen holder 23 slides out relative to the connecting rod 22 through the second reset elastic element 2353. The second reset elastic element 2353 is installed inside the sliding rod 235. The second reset elastic element 2353 abuts against the connecting rod 22 to provide sufficient elastic force. The second reset elastic element 2353 provides elastic force when the latch 24 is unlocked, pushing the sliding rod 235 to slide relative to the connecting rod 22, ensuring that the pen holder 23 can extend automatically, reducing operation steps and improving the convenience and efficiency of use.

[0038] More specifically, such as Figures 1 to 3 As shown, the bottom of the positioning rod 3 is provided with a pin 31, and the joint 21 is provided with a receiving groove 233 adapted to the pin 31. The pin 31 is a key component of the compass function, used to locate the center point of the circle. The receiving groove 233 is provided in the joint 21. The shape and size of the receiving groove 233 match the pin 31, ensuring that the pin 31 can be stably inserted into the receiving groove 233, realizing a tight fit between the positioning rod 3 and the joint 21, so that the positioning rod 3 and the pen barrel 2 form a complete pen shape, preventing the pin 31 from being exposed during carrying or use, reducing the risk of scratches caused by the exposed pin 31, improving the safety of the tool, and extending the service life of the pin 31.

[0039] More specifically, such as Figures 1 to 3 , Figure 6As shown, the positioning rod 3 is provided with a positioning protrusion 32, and the joint 21 is provided with a positioning groove 234 that matches the positioning protrusion 32. The positioning protrusion 32 is a protruding part of the positioning rod 3, which is used to cooperate with the positioning groove 234 of the joint 21. The shape and size of the positioning groove 234 match the positioning protrusion 32, ensuring that the positioning protrusion 32 can be accurately inserted and fixed in the positioning groove 234, so that the positioning rod 3 and the joint 21 can be quickly and accurately connected, and prevent the positioning rod 3 from loosening or shifting during storage, thereby improving the stability and reliability of the entire tool.

[0040] More specifically, such as Figure 3 and Figure 6 As shown, the positioning protrusion 32 is located at the bottom of the positioning rod 3 for mounting the pin 31. The positioning groove 234 is connected to the receiving groove 233. The positioning protrusion 32 is set at the bottom of the positioning rod 3 for mounting the pin 31, so that the pin 31 can be stably fixed on the positioning rod 3, ensuring the stability of the pin 31 during use. At the same time, the positioning protrusion 32 cooperates with the positioning groove 234 of the connecting part 21 to achieve a stable connection between the positioning rod 3 and the connecting part 21. The connection design between the positioning groove 234 and the receiving groove 233 allows the pin 31 to be smoothly inserted into the receiving groove 233, making the connection between the positioning rod 3 and the connecting part 21 easier and storage less effort.

[0041] More specifically, such as Figure 3 As shown, an automatic lead assembly 4 is installed inside the pen holder 23. The automatic lead assembly 4 has a push-button cap 41. The pen holder 23 has a second slide rail 232 that is slidably connected to the push-button cap 41. The push-button cap 41 slides within the second slide rail 232 under force to extend the lead of the automatic lead assembly 4. By installing the automatic lead assembly 4 inside the pen holder 23, the pen 2 can realize the functions of writing and drawing through the automatic lead assembly 4. The push-button cap 41 is the main component for the user to operate the automatic lead assembly 4. The lead is extended by pressing the push-button cap 41. The push-button cap 41 is installed in the second slide rail 232 on the side wall of the pen holder 23. The second slide rail 232 allows the push-button cap 41 to slide under force to extend the lead of the automatic lead assembly 4. The operation is simple and quick, reducing the trouble of manually adjusting the lead and improving the efficiency of the tool.

[0042] This application is not limited to the above-described preferred embodiments. Anyone can derive other products in various forms under the guidance of this application. However, regardless of any changes made to their shape or structure, any technical solution that is the same as or similar to that of this application falls within the protection scope of this application.

Claims

1. A pen-shaped compass, comprising a compass seat (1), wherein the compass seat (1) is rotatably connected to a pen barrel (2) and a positioning rod (3), wherein the pen barrel (2) is provided with a joint (21) adapted to the positioning rod (3), characterized in that, The pen barrel (2) includes a connecting rod (22) and a pen holder (23). The pen holder (23) is slidably connected to the connecting rod (22) to achieve extension and retraction. When the pen holder (23) slides out relative to the connecting rod (22), the joint (21) extends to be adapted to the positioning rod (3). The positioning rod (3) is connected to the joint (21) by rotation to achieve the writing function. A latch (24) is provided between the connecting rod (22) and the pen holder (23). When the positioning rod (3) rotates and disengages from the joint (21), the pen holder (23) can slide back relative to the connecting rod (22) and be locked by the latch (24) to achieve the compass function.

2. A pen-shaped compass according to claim 1, characterized in that, The latch (24) is rotatably mounted on the connecting rod (22), and the pen holder (23) is provided with a buckle (231) adapted to the latch (24). The latch (24) can be connected or disengaged from the buckle (231) by rotation.

3. A pen-shaped compass according to claim 2, characterized in that, The joint (21) is provided with a mounting groove (211) that is adapted to the latch (24). The latch (24) is rotatably connected to the mounting groove (211). The surface of the latch (24) is flush with the surface of the joint (21). A first reset elastic member (212) is installed between the mounting groove (211) and the latch (24).

4. A pen-shaped compass according to claim 2, characterized in that, The pen holder (23) is provided with a sliding rod (235), the sliding rod (235) is provided with an opening (2351) for the connecting rod (22) to pass through, the connecting rod (22) passes through the opening (2351) to slide and engage with the sliding rod (235), and the fastener (231) is provided on the sliding rod (235).

5. A pen-shaped compass according to claim 4, characterized in that, The connecting rod (22) is provided with a limiting buckle (221), and the sliding rod (235) is provided with a first slide rail (2352) adapted to the limiting buckle (221). The limiting buckle (221) and the first slide rail (2352) are slidably connected to limit the sliding range of the sliding rod (235).

6. A pen-shaped compass according to claim 5, characterized in that, The connecting rod (22) is provided with an elastic arm (222), and the limiting buckle (221) is provided on the elastic arm (222). The limiting buckle (221) passes through the opening (2351) and connects to the first slide rail (2352) through the elastic action of the elastic arm (222).

7. A pen-shaped compass according to claim 4, characterized in that, The sliding rod (235) is equipped with a second reset elastic element (2353), which abuts against the connecting rod (22). When the latch (24) is unlocked by force, the pen holder (23) slides out relative to the connecting rod (22) through the second reset elastic element (2353).

8. A pen-shaped compass according to claim 1, characterized in that, The bottom of the positioning rod (3) is provided with a pin (31), and the joint (21) is provided with a receiving groove (233) that is adapted to the pin (31).

9. A pen-shaped compass according to claim 8, characterized in that, The positioning rod (3) is provided with a positioning protrusion (32), and the joint (21) is provided with a positioning groove (234) that is adapted to the positioning protrusion (32); the positioning protrusion (32) is located at the bottom of the positioning rod (3) for installing pins (31), and the positioning groove (234) is connected to the receiving groove (233).

10. A pen-shaped compass according to claim 1, characterized in that, The pen holder (23) is equipped with an automatic lead assembly (4), the automatic lead assembly (4) is provided with a push cap (41), the pen holder (23) is provided with a second slide rail (232) slidably connected to the push cap (41), the push cap (41) is slidably connected to the second slide rail (232) to make the automatic lead assembly (4) release the lead.

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