Compasses for liquid crystal blackboard

Abstract

The utility model discloses a pair of compasses for a liquid crystal blackboard, which comprises a positioning rod and a positioning piece, a positioning rod is fixed on the positioning rod, the positioning piece consists of a hoop pipe clamp, a universal joint ball cage, a universal joint ball head and a positioning disc, and the hoop pipe clamp is firmly fixed on the positioning rod through a clamping mechanism of the hoop pipe clamp, so that the stability of the positioning piece is ensured. The universal joint ball head and the universal joint ball cage are movably connected in a ball and socket joint connection mode, so that the angle and the direction of the compasses can be flexibly adjusted. The positioning disc is installed at the bottom of the universal joint ball head and is detachable in a threaded connection or buckle connection mode, and a user can replace or maintain the universal joint ball head conveniently according to needs. The magnet is embedded in the positioning disc, and the magnet is wrapped by the buffer pad, so that the adsorption force between the compasses and the liquid crystal blackboard is enhanced, the compasses are more stable, direct friction and impact on the surface of the liquid crystal blackboard are reduced through the buffer pad, and scratches and damage are effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a compass for a liquid crystal blackboard. Background Art

[0002] As the demand for interactive and modern teaching tools increases in education and business presentations, the use of LCD blackboards has become more and more common. LCD blackboards not only provide a versatile presentation platform, but also allow users to write and draw directly on the screen by touch or special pens, greatly improving the efficiency of communication and teaching. However, traditional drawing tools such as compasses have obvious limitations when used on such high-tech equipment.

[0003] On the one hand, conventional compasses are designed for use on paper or flat drawing boards, and their pointed feet and clamping parts may scratch or damage the sensitive electronic screen of the LCD blackboard. This physical damage not only reduces the service life of the LCD blackboard, but may also affect its display effect. On the other hand, since the surface properties of the LCD blackboard are different from those of paper, traditional compasses cannot be firmly positioned on the LCD blackboard, which limits its practicality and accuracy. Therefore, there is an urgent need for a special compass that can protect the LCD blackboard from damage and meet the needs of accurate drawing.

[0004] Although there have been some attempts to address these issues by improving the design of traditional compasses, such as using a soft head instead of a metal spike, these solutions fail to adequately address the compass's stability and protection of the LCD screen. In addition, these designs often overlook user convenience during use, such as quickly changing accessories or adjusting the position of drawing tools. Utility Model Content

[0005] The main purpose of the utility model is to propose a compass for LCD blackboards, aiming to solve the technical problem that the current conventional compasses are designed for paper or flat drawing boards, and their pointed feet and clamping parts may scratch or damage the LCD blackboard. In view of the above challenges, the development of the present invention focuses on creating a new type of compass specifically for use with LCD blackboards. The compass is intended to provide a safe, stable and easy-to-operate drawing tool while minimizing potential damage to the LCD blackboard. By introducing a unique cushion design and an adjustable connection mechanism, the present invention not only enhances the functionality and applicability of the compass, but also ensures the integrity of the LCD blackboard and the safety of operation while maintaining ease of operation.

[0006] To achieve the above-mentioned purpose, the utility model proposes a compass for a liquid crystal blackboard, comprising a positioning rod and a positioning piece, wherein a positioning rod is fixed on the positioning rod, and the positioning piece comprises a clamp pipe clamp, a universal joint ball cage, a universal joint ball head, and a positioning plate, wherein the clamp pipe clamp is fixed to the positioning rod by a clamping mechanism thereof, and the universal joint ball head and the universal joint ball cage are movably connected by a ball and socket joint connection, and the positioning plate is installed at the bottom of the universal joint ball head and is detachable by a threaded connection or a snap connection; a magnet is embedded in the positioning plate, and a buffer pad is wrapped around the outside of the magnet.

[0007] Preferably, the top of the universal joint ball cage is a sleeve rod, the sleeve rod is butted against the positioning rod, and the clamp tube is clamped on the sleeve rod so that the sleeve rod clamps the positioning rod.

[0008] Preferably, the universal joint ball cage is further provided with a fixing piece, the fixing piece passes through the sleeve rod, and the sleeve rod can be rotated to clamp the positioning rod.

[0009] Preferably, a connecting rod is provided at the bottom of the universal joint ball head, and the connecting rod and the positioning plate are detachable through a threaded connection or a snap connection.

[0010] Preferably, the compass for the liquid crystal blackboard also includes a rotating rod, the top of the rotating rod is connected to the top of the positioning rod via an adjustable connecting mechanism, and the connecting mechanism is used to adjust the angle or distance between the rotating rod and the positioning rod.

[0011] Preferably, a fixing clip is provided on the rotating rod, and the fixing clip is used to clamp and fix the writing pen of the liquid crystal blackboard.

[0012] Preferably, the fixing member is a bolt or a knob, one end of which is provided with a handle or a wing, so that the user can easily adjust the clamping force of the sleeve rod on the positioning rod by rotating the fixing member.

[0013] Preferably, the connecting rod is provided with anti-skid patterns or protrusions on the outside to enhance the gripping feeling and anti-skid performance during operation.

[0014] Preferably, the interior of the fixing clamp is lined with rubber or silicone to cushion the writing pen and prevent it from being damaged during the clamping process.

[0015] Preferably, the buffer pad is made of EVA material.

[0016] Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

[0017] By embedding magnets in the positioning plate and wrapping a cushion on the outside, this compass significantly reduces the possible damage to the surface of the LCD blackboard. This design takes advantage of the excellent cushioning properties of EVA foam to effectively absorb impact and reduce friction, thereby protecting the LCD blackboard screen from scratches and wear. The design of the clamp pipe clamp and the universal joint ball cage allows the compass to be fixed on the LCD blackboard more stably. This stability not only helps to improve the accuracy of drawing, but also allows the compass to be flexibly operated at different angles and directions, increasing adaptability and convenience during use. This compass provides users with a high degree of customization by adopting an adjustable connection mechanism and a detachable positioning plate. Users can adjust the settings of the compass according to specific usage needs, or quickly replace damaged parts, which not only extends the service life of the compass, but also reduces the cost of long-term maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the compass for liquid crystal blackboard of the utility model;

[0019] Figure 2 The utility model is an exploded view of the positioning member of the compass for the liquid crystal blackboard. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Please refer to Figure 1 and Figure 2 In the embodiment of the liquid crystal blackboard compass, the positioning rod 100 serves as the basic supporting structure of the entire device, and a positioning rod 101 is fixed thereon. The positioning rod 101 is designed to be in a shape and size that matches the liquid crystal blackboard to ensure that the compass can be stably fixed on the liquid crystal blackboard and will not slide or flip due to external forces during operation. The material selection of the positioning rod 100 needs to have a certain strength and rigidity, and at the same time, it needs to be light in weight for easy operation and carrying. Usually, materials such as aluminum alloy or high-strength plastic can be selected.

[0022] The positioning member 200 is a core component for realizing the precise drawing function, and includes a clamping clamp 201, a universal joint ball cage 202, a universal joint ball head 205, and a positioning plate 207. The clamping clamp 201 is fixed to the positioning rod 101 through its clamping mechanism, and the clamping mechanism can be a manual tightening type or a quick buckle type, so that the user can quickly and conveniently install and remove it. The design of the clamping clamp 201 needs to ensure sufficient clamping force to prevent the compass from shifting during use.

[0023] The combination of the universal joint ball head 205 and the universal joint ball cage 202 provides the compass head with multi-directional mobility, so that the positioning plate 207 can be adjusted to different directions and angles according to drawing needs. This ball and socket joint connection method can achieve 360-degree rotation, increasing the flexibility and convenience of use. In addition, in order to adapt to the operating habits of different users and different usage environments, the structural design of the universal joint should allow users to make fine angle adjustments and lock in a specific state.

[0024] The positioning plate 207 is installed at the bottom of the universal joint ball head 205 and is detachable by means of a threaded connection or a snap connection. This design facilitates the replacement and maintenance of the positioning plate 207. When the positioning plate 207 is worn or damaged due to long-term use, the user can quickly replace it by himself without replacing the entire compass. The magnet 208 in the positioning plate 207 should be selected to have good magnetism and durability to ensure that it can maintain a stable adsorption force after long-term use.

[0025] In a preferred embodiment, the cushion pad 209 wrapped around the outside of the positioning plate 207 is made of EVA material. The EVA material has excellent cushioning properties and can effectively absorb the impact force generated when the compass moves on the liquid crystal blackboard, protecting the surface of the liquid crystal blackboard from damage caused by direct contact with hard objects. In addition, the lightness and elasticity of the EVA material also make it more comfortable for users to hold and operate the compass for a long time, reducing fatigue.

[0026] In summary, the specific implementation of the LCD blackboard compass not only pays attention to the functionality and practicality of the product, but also fully considers the user experience and the convenience of equipment maintenance. Through the carefully designed components and their connection methods, the compass can meet the needs of modern education and business presentations for high-precision drawing tools for LCD blackboards.

[0027] In the preferred embodiment of the compass for the liquid crystal blackboard, the top of the universal joint ball cage 202 is designed in the form of a sleeve rod 203. The core of this design choice is to improve the adjustment flexibility and stability of the overall structure. The docking method of the sleeve rod 203 and the positioning rod 101 allows the compass to be quickly assembled and disassembled, which is convenient for users to quickly build or store the compass according to their needs to adapt to different usage scenarios.

[0028] The use of the clamp pipe clamp 201 further enhances this rapid response capability. The clamp pipe clamp 201 is sleeved on the sleeve rod 203 through its own clamping mechanism, and the sleeve rod 203 is firmly fixed on the positioning rod 101 through the clamping force. This clamping mechanism not only provides a stable connection, but also allows for quick release when adjustment is required, which brings great convenience to the user.

[0029] In order to improve the stability and safety of the connection, a fixing piece 204 is also provided on the universal joint ball cage 202. The fixing piece 204 passes through the sleeve rod 203 and can be rotated to further strengthen the connection between the sleeve rod 203 and the positioning rod 101. When the fixing piece 204 is rotated to a certain position, the sleeve rod 203 can clamp the positioning rod 101 more tightly, thereby preventing slippage or loosening during any operation, ensuring reliability and safety in use.

[0030] The preferred solution of this structural design utilizes the basic principle of mechanical connection, and a stable connection can be achieved through simple rotation and clamping actions, without complicated tools or long locking processes. This not only improves the user's operating experience and reduces the complexity of operation, but also ensures the stability and accuracy of high-precision drawing on the LCD blackboard.

[0031] Through the optimal configuration of these components, the compass for the LCD blackboard can provide a more efficient and safe method of use, meet the needs of modern education and business presentations for efficient, accurate and easy-to-operate drawing tools, and demonstrate the innovation and practicality of the utility model in design and function realization.

[0032] Please refer to Figure 2 In the preferred embodiment of the compass for liquid crystal blackboard, a connecting rod 206 is provided at the bottom of the universal joint ball head 205. This design makes the structure of the entire compass more flexible and adjustable. The connection between the connecting rod 206 and the positioning plate 207 is realized by a thread or a buckle, which not only facilitates the user to quickly replace or repair the positioning plate 207 under different usage requirements, but also ensures the stability and safety of the connection.

[0033] The threaded connection provides a reliable and firm fixing method, which can withstand large external forces without loosening, and is suitable for frequent use or when high precision is required. The snap connection provides a quick assembly and disassembly solution, which is particularly suitable for occasions where the positioning plate 207 needs to be quickly adjusted or replaced, greatly improving the convenience of operation.

[0034] In addition, the compass further comprises a rotating rod 300, the top of which is connected to the top of the positioning rod 100 via an adjustable connection mechanism 400. This design increases the functionality of the compass, allowing the user to adjust the angle or distance between the rotating rod 300 and the positioning rod 100 according to specific drawing requirements. The adjustable connection mechanism 400 can be a locking knob, a telescopic mechanism or the like, which can provide stable and flexible adjustment performance, so that the compass can adapt to different operating environments and personal preferences.

[0035] In this way, users can easily adjust the shape of the compass to suit different drawing tasks. Whether it is a small-scale drawing that requires fine details or a large-scale full-page layout, the best use effect can be achieved through simple adjustments. This adjustability greatly improves the use range and practicality of the compass, making this LCD blackboard compass a multifunctional and efficient tool that meets the professionalism and flexibility of various complex drawing needs.

[0036] In short, through these preferred implementations, the compass for the LCD blackboard not only achieves a high degree of structural optimization and functional improvement, but also provides greater autonomy and adaptability in operation, fully reflecting the innovative spirit and user-friendly design purpose of the utility model.

[0037] The preferred embodiment of the compass for the liquid crystal blackboard further involves humanized and functionally enhanced design details, aiming to improve the user experience and the practicality of the tool.

[0038] The fixing clip 301 provided on the rotating rod 300 is used to clamp and fix the writing pen 302 of the liquid crystal blackboard. This design allows the user to conveniently store and use the writing pen 302 when the compass is not in use, avoiding the inconvenience of frequently changing tools during the drawing process. The fixing clip 301 not only provides a stable storage solution, but also increases the cushioning performance through the rubber or silicone material lining inside it, thereby protecting the writing pen 302 from possible damage during the clamping process. The use of this material can also increase the friction of the clamping to prevent the writing pen 302 from accidentally slipping during activities.

[0039] In order to improve the user's operating convenience, the fixing member 204 is designed in the form of a bolt or a knob, and a handle or a wing is provided at one end. This design allows the user to easily adjust the clamping force of the sleeve rod 203 on the positioning rod 101 by rotating the fixing member 204 even in a space-constrained environment. This easy-to-operate adjustment mechanism not only improves the user experience, but also ensures the stability and safety of the compass during use.

[0040] The connecting rod 206 is provided with anti-skid patterns or protrusions on the outside. This design detail greatly enhances the grip and anti-skid performance of the user when operating the compass. When drawing with precision, a good grip can not only reduce hand fatigue, but also improve the accuracy of operation. The design of anti-skid patterns or protrusions effectively increases the friction of the hand, and can maintain good operation control even when the hands are sweaty or wearing gloves.

[0041] The performance of the LCD blackboard compass in actual use is more comprehensive and efficient, meeting the user's needs for convenience, stability and protection in different usage scenarios. These design improvements fully demonstrate the goals and efforts of the utility model in improving the functionality and user experience of professional drawing tools.

[0042] It should be noted that the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A compass for a liquid crystal blackboard, comprising a positioning rod and a positioning member, characterized in that: A positioning rod is fixed on the positioning rod, and the positioning member includes a clamp pipe clamp, a universal joint ball cage, a universal joint ball head, and a positioning plate. The clamp pipe clamp is fixed to the positioning rod through its clamping mechanism, and the universal joint ball head and the universal joint ball cage are movably connected through a ball-and-socket joint connection. The positioning plate is installed at the bottom of the universal joint ball head and is detachable through a threaded connection or a snap connection. A magnet is embedded in the positioning plate, and a buffer pad is wrapped around the outside of the magnet. The compass for the liquid crystal blackboard also includes a rotating rod, the top of which is connected to the top of the positioning rod via an adjustable connecting mechanism, and the connecting mechanism is used to adjust the angle or distance between the rotating rod and the positioning rod; A fixing clamp is arranged on the rotating rod, and the fixing clamp is used for clamping and fixing the writing pen of the liquid crystal blackboard.

2. The compass for liquid crystal blackboard according to claim 1, characterized in that: The top of the universal joint ball cage is a sleeve rod, the sleeve rod is butted with the positioning rod, and the clamp tube is clamped on the sleeve rod so that the sleeve rod clamps the positioning rod.

3. The compass for liquid crystal blackboard according to claim 2, characterized in that: The universal joint ball cage is also provided with a fixing piece, and the fixing piece passes through the sleeve rod. Rotating the fixing piece can enable the sleeve rod to clamp the positioning rod.

4. The compass for liquid crystal blackboard according to claim 1, characterized in that: A connecting rod is provided at the bottom of the universal joint ball head, and the connecting rod and the positioning plate are detachable through a threaded connection or a snap connection.

5. The compass for liquid crystal blackboard according to claim 3, characterized in that: The fixing piece is a bolt or a knob, one end of which is provided with a handle or a wing, so that the user can easily adjust the clamping force of the sleeve rod on the positioning rod by rotating the fixing piece.

6. The compass for liquid crystal blackboard according to claim 4, characterized in that: The connecting rod is provided with anti-skid patterns or protrusions on the outside.

7. The compass for liquid crystal blackboard according to claim 1, characterized in that: The interior of the fixing clip is lined with rubber or silicone.

8. The compass for liquid crystal blackboard according to claim 1, characterized in that: The buffer pad is made of EVA material.

Images