A film-coated transfer tool with a protective cap

Abstract

The application discloses a film coating transfer device with a protective cap, comprising a body, an end of the body is provided with a transfer head, further comprising an outer shell and a protective cap, the outer shell is sleeved on the body, the protective cap is located between the outer shell and the body, the outer shell is provided with a first opening for the transfer head to extend out, the protective cap is provided with a first protrusion, the outer shell is provided with a sliding rail matched with the first protrusion, the first protrusion is connected with the sliding rail to enable the protective cap to be slidingly installed on the outer shell, the first protrusion extends through the sliding rail to be operated by force, and the first protrusion slides along the sliding rail under the force to enable the protective cap to extend out to protect the transfer head or to retract to expose the transfer head.

Description

Technical Field

[0001] This application relates to the field of stationery technology, and more specifically to a coating transfer tool with a protective cap. Background Technology

[0002] A coating transfer tool is a tool used to transfer coatings from a transfer belt to a target surface, such as transferring a correction coating onto paper. It is widely used in offices, schools, and other fields. A coating transfer tool typically consists of a housing, a transfer belt, a transfer head, and a power mechanism. In use, pressing the transfer head causes the coating on the transfer belt to contact and adhere to the surface to be transferred, thus achieving coating transfer. Traditional coating transfer tools have the transfer head directly exposed. When not in use, the transfer head accumulates dust and impurities, affecting the transfer effect and leading to uneven coatings or spots. Furthermore, the exposed transfer head is easily damaged by accidental contact. Therefore, existing coating transfer tools incorporate a protective cap to cover and protect the transfer head, thereby extending its lifespan. Currently, the correction head and film tape are mostly protected by attaching a protective cap to the transfer head. Some protective caps are connected to the transfer head or housing through a simple snap-fit ​​structure. The protective cap is a separate component. This connection method is prone to causing the protective cap to separate from the main body due to external forces (such as collisions or drops) during use, resulting in loss. In addition, the protective cap needs to be repeatedly opened and closed during actual use, which is not only cumbersome, but also easy to lose when the protective cap is removed separately.

[0003] To address the aforementioned issues, Chinese utility model patent CN201433014Y discloses an adhesive applicator with a sliding cap. The applicator includes a housing, a core tape device, an adhesive head assembly, and a cap. The adhesive head assembly is confined within a receiving portion of the housing and has an adhesive head that protrudes from an opening in the housing. The cap slides within the housing and is movable between two positions. In the first position, the cap covers the adhesive head to protect it from dust or dirt. In the second position, the adhesive head is exposed and in use. This technical solution utilizes the cap (the aforementioned protective cap) to slide within the receiving portion of the housing, thereby achieving the covering or exposure of the adhesive head and solving the problems of inconvenience and easy loss associated with existing protective caps. However, there is no additional force-applying component between the cover and the housing. When the cover slides to the first position, it is hidden inside the housing's receiving section, making it difficult for the user to directly contact the cover's surface and apply force to slide it to the second position. Therefore, there are still many problems in practical use. On the other hand, the cover slides directly onto the housing, and the sliding structure of the cover will cause stress concentration in local areas of the housing, thus affecting the overall strength of the housing. Summary of the Invention

[0004] The technical problem to be solved by this application is to provide a coating transfer tool with a protective cap. By adding an outer shell and a protective cap to the main body, and by setting a first protrusion on the protective cap and a slide rail on the outer shell, the connection and cooperation between the first protrusion and the slide rail not only realizes the sliding function of the protective cap, but also avoids the impact of local stress concentration on the strength of the shell, thus cleverly realizing the limiting function, preventing the protective cap from sliding off the outer shell, and improving assembly efficiency.

[0005] This application provides a coating transfer tool with a protective cap, including a body, a transfer head at one end of the body, an outer shell, and a protective cap. The outer shell is fitted onto the body, and the protective cap is located between the outer shell and the body. The outer shell has a first opening for the transfer head to extend out, and the protective cap has a first protrusion. The outer shell has a slide rail adapted to the first protrusion, and the first protrusion is connected to the slide rail to allow the protective cap to be slidably mounted on the outer shell. The first protrusion extends through the slide rail for force application, and the first protrusion slides along the slide rail under force to allow the protective cap to extend relative to the outer shell to protect the transfer head or retract to expose the transfer head.

[0006] In this technical solution, a transfer head is installed on the main body for coating transfer. Both the outer shell and the protective cap are fitted onto the main body. The outer shell protects and houses the internal components, while the protective cap, located between the outer shell and the main body, protects the transfer head from contamination or damage when not in use. A first protrusion is provided on the protective cap, and a slide rail is provided on the outer shell. The first protrusion cooperates with the slide rail to guide the sliding of the protective cap. The first protrusion extends beyond the slide rail, facilitating user application of force. By applying force to the first protrusion, the user can push the protective cap along the slide rail. The first protrusion provides a clear point of application, making it easy for the user to push the protective cap. This solves the sliding difficulty problem caused by the lack of a force application point in traditional designs. The slide rail design ensures smoother and more stable sliding of the protective cap, reducing resistance and jamming during the sliding process. The sliding of the protective cap no longer directly depends on the shell; stress is distributed by the slide rail, reducing wear on the shell and thus improving the overall structural stability of the product. This design avoids the impact of localized stress concentration on the shell's strength. When the transfer head is needed, the user applies force to push the first protrusion, causing the protective cap to slide along the slide rail until it is fully retracted into the shell, exposing the transfer head for coating transfer operations. When the transfer head needs to be stored, the user applies force to push the first protrusion, causing the protective cap to slide along the slide rail and extend out of the shell, completely covering the transfer head to prevent contamination or damage and extend its service life. The connection between the first protrusion and the slide rail allows the protective cap to slide smoothly along the rail, switching between a protected state (covering the transfer head) and a usable state (exposing the transfer head). The length of the slide rail determines the sliding range of the protective cap, preventing it from sliding off the shell. This eliminates the need for additional limiting devices, simplifying the product structure. Through the connection and cooperation of the first protrusion and the slide rail, not only is the sliding function of the protective cap achieved, but the limiting function is also cleverly implemented, preventing the protective cap from sliding off the shell, reducing manufacturing costs, and improving assembly efficiency.

[0007] As an improvement, the inner wall of the outer shell is provided with a positioning structure, and the outer wall of the protective cap is provided with an elastic structure adapted to the positioning structure. The positioning structure and the elastic structure are connected to limit the sliding of the protective cap. In this technical solution, the positioning structure and the elastic structure cooperate to realize the sliding limit function of the protective cap. Its main function is to provide a fixed limiting point to ensure that the protective cap can accurately stop at the predetermined position. The positioning structure can be a protrusion, groove, slot, or other form of fixing structure. The elastic structure can be an elastic protrusion, elastic buckle, elastic groove, or other elastic element that can deform under external force and return to its original shape after the force is removed. During the sliding process, the elastic structure can detach from the positioning structure through elastic action. When the user pushes the protective cap to slide, the elastic structure slides along the inner wall of the outer shell until it reaches the position of the positioning structure, so that the elastic structure connects with the positioning structure, so that the protective cap stops at the position where the protective transfer head is extended or retracted to expose the transfer head, avoiding exposure or insufficient protection of the transfer head due to inaccurate positioning. The elastic structure can also make the fit between the protective cap and the outer shell tighter and more reliable, making the sliding of the protective cap smoother, improving the reliability of the product and the user experience.

[0008] As an improvement, the elastic structure is provided with a first recess and a second recess, which are slidably connected to a positioning structure. The positioning structure is connected to the first recess to lock the protective cap out relative to the outer shell, and the positioning structure is connected to the second recess to lock the protective cap back relative to the outer shell. Alternatively, the elastic structure is provided with a fourth protrusion and a fifth protrusion, which are slidably connected to a positioning structure. The positioning structure is connected to the fourth protrusion to lock the protective cap out relative to the outer shell, and the positioning structure is connected to the fifth protrusion to lock the protective cap back relative to the outer shell. In this technical solution, an elastic structure is disposed on the outer wall of the protective cap to cooperate with a positioning structure on the outer shell. The elastic structure has a first recess and a second recess, which correspond to two working positions of the protective cap, respectively. The positioning structure is disposed on the inner wall of the outer shell and can be a protruding fixing structure used to switch between the first and second recesses. When the protective cap slides under force, either the first or second recess on the elastic structure connects with the positioning structure, realizing the switching of the protective cap between the two positions. When the positioning structure connects with the first recess, the protective cap extends, covering the transfer head; when the positioning structure connects with the second recess, the protective cap retracts. The exposed transfer head and the simple and reliable design of the positioning and elastic structures improve product reliability and user experience. This application can also provide another specific way of cooperating the positioning and elastic structures. The elastic structure is provided with a fourth protrusion and a fifth protrusion, which correspond to the two working positions of the protective cap. The positioning structure is set on the inner wall of the outer shell and can be a groove-shaped fixing structure used to switch between connecting the fourth and fifth protrusions. The fourth protrusion corresponds to the aforementioned first recess, and the fifth protrusion corresponds to the aforementioned second recess. The two protrusions have the same function as the two recesses mentioned above, and the cooperation method is also the same, so it will not be described in detail.

[0009] As an improvement, the protective cap is provided with an elastic groove adjacent to the elastic structure, the elastic structure being an elastic arm, and the first protrusion being disposed on the elastic structure. In this technical solution, by providing an elastic groove on the protective cap, the elastic structure is disposed on the protective cap, specifically as an elastic arm. The elastic arm has a certain elasticity through the elastic groove, and the design of the elastic groove provides deformation space for the elastic arm. The design of the elastic groove reduces stress concentration during deformation of the elastic arm, improving the service life and reliability of the elastic arm. The first protrusion is disposed on the elastic structure, and the elastic design of the elastic arm allows the first protrusion to fit tightly with the positioning structure, improving the stability of the protective cap during sliding.

[0010] As an improvement, the main body is provided with opposing first and second side flat walls, which cooperate to support the protective cap. The elastic structure abuts against the first side flat wall. In this technical solution, the main function of the first and second side flat walls is to provide stable support for the protective cap, ensuring that the protective cap can move smoothly during sliding. The elastic structure directly contacts the first side flat wall to form an abutment relationship, so that the elastic structure can be effectively supported during sliding. When the user pushes the protective cap to slide, the first protrusion on the elastic structure slides along the slide rail on the outer shell, while the elastic structure itself moves smoothly under the support of the first side flat wall, resulting in better overall structural strength.

[0011] As an improvement, the first sidewall is provided with a receiving groove adapted to the elastic structure, and the elastic structure is slidably connected to the receiving groove. In this technical solution, the elastic structure is preferably an elastic arm, which protrudes relative to the protective cap. A receiving groove is provided on the first sidewall to accommodate the protruding part of the elastic structure. The shape and size of the receiving groove are adapted to the elastic structure to ensure that the elastic structure can slide smoothly within it. The receiving groove provides a sliding path for the elastic structure, allowing it to slide along a predetermined trajectory, avoiding interference with the sliding of the protective cap, reducing resistance during the sliding process, and making the sliding of the protective cap smoother.

[0012] As an improvement, the second side flat wall is provided with a limiting protrusion adapted to the protective cap. The bottom of the protective cap abuts against the limiting protrusion to limit the sliding of the protective cap. In this technical solution, the limiting protrusion is provided on the second side flat wall and adapted to the bottom of the protective cap. The main function of the limiting protrusion is to limit the sliding range of the protective cap and prevent it from sliding excessively during retraction. The shape and size of the limiting protrusion are adapted to the bottom of the protective cap to ensure that the two can make close contact and achieve the limiting function. The limiting protrusion provides a clear limiting point for the protective cap, and the user can intuitively feel the limiting position when pushing the protective cap to slide, making the operation more convenient.

[0013] As an improvement, a second protrusion is provided inside the outer shell, and a guide groove adapted to the second protrusion is provided on the protective cap. The second protrusion is connected to the guide groove to guide the protective cap in sliding. In this technical solution, the shape and size of the second protrusion are adapted to the guide groove to ensure that the two can fit tightly together and realize the sliding guidance function. This ensures that the protective cap can move smoothly along the predetermined trajectory, preventing the protective cap from shaking or deviating from the predetermined trajectory during sliding, thus improving the accuracy of operation. Both the guide groove and the second protrusion are elongated, and their length direction is consistent with the sliding direction of the protective cap to ensure smooth sliding.

[0014] As an improvement, the guide groove is provided with a second opening, which is funnel-shaped and used to allow the second protrusion to be inserted into the guide groove. In this technical solution, by providing a funnel-shaped second opening in the guide groove, the main function of the funnel-shaped second opening is to guide the second protrusion to be smoothly inserted into the guide groove, reducing the difficulty of alignment during installation. The shape of the funnel-shaped second opening is similar to a gradually narrowing channel, with its larger end facing outward and its smaller end connected to the inside of the guide groove, making it easier for the second protrusion to enter the guide groove, even if the alignment is not completely precise, thus reducing friction and resistance during installation.

[0015] As an improvement, the outer shell is provided with multiple third protrusions, and the main body is provided with multiple limiting grooves that fit the third protrusions. The third protrusions and limiting grooves are snap-fitted together to fix the outer shell onto the main body. In this technical solution, by setting the third protrusion on the inner wall of the outer shell to cooperate with the limiting grooves on the main body, the third protrusion and the limiting groove are connected by a snap-fit ​​to achieve the fixed installation of the outer shell and the main body. The shape and size of the third protrusion are adapted to the limiting groove to ensure that the two can fit tightly and achieve a stable snap-fit ​​connection. During assembly, the third protrusion is inserted into the limiting groove, and the outer shell and the main body are fixed by the snap-fit ​​connection. The snap-fit ​​connection design makes the assembly process simple and quick, without the need for additional fasteners, thus improving assembly efficiency. More preferably, both the third protrusion and the limiting groove are triangular in structure, which gives the third protrusion and the limiting groove better stability and pull-out resistance when snap-fitted together, ensuring that the outer shell will not loosen or shift during use, thus improving the overall stability of the product. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the coating transfer tool in the stored state in this application.

[0017] Figure 2 This is a three-dimensional structural diagram of the coating transfer tool in use in this application.

[0018] Figure 3 This is an exploded structural diagram of the coating transfer tool in this application.

[0019] Figure 4 This is a three-dimensional structural diagram of the protective cap in this application.

[0020] Figure 5 This is a cross-sectional view of the outer shell in this application.

[0021] Figure 6 This is a cross-sectional view of the coating transfer tool in this application.

[0022] Figure 7 For this application Figure 6A magnified view of a portion of point A in the middle.

[0023] Figure 8 This is a three-dimensional structural diagram of the protective cap and the main body in this application.

[0024] Figure 9 This is a three-dimensional structural diagram of the main body in this application.

[0025] The figure shows: 1. Body; 11. Transfer head; 12. First side flat wall; 121. Receiving groove; 13. Second side flat wall; 131. Limiting protrusion; 14. Limiting groove; 2. Outer shell; 21. First opening; 22. Slide rail; 23. Positioning structure; 24. Second protrusion; 25. Third protrusion; 3. Protective cap; 31. First protrusion; 311. Anti-slip structure; 32. Elastic structure; 321. First recess; 322. Second recess; 33. Elastic groove; 34. Guide groove; 341. Second opening. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Furthermore, it should be noted that the terms "installation," "setup," "equipped with," "connection," and "linked" 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.

[0030] like Figures 1 to 9 As shown, this application discloses a coating transfer tool with a protective cap, including a body 1, with a transfer head 11 at one end of the body 1 for coating transfer operations, and an outer shell 2 and a protective cap 3. The outer shell 2 is fitted onto the body 1, and the protective cap 3 is located between the outer shell 2 and the body 1. The outer shell 2 has a first opening 21 for the transfer head 11 to extend out, and the outer shell 2 serves to protect and accommodate internal components. The protective cap 3, located between the outer shell 2 and the body 1, protects the transfer head 11 from contamination or damage when not in use. The protective cap 3 has a first protrusion 31, and the outer shell 2 has a slide rail 22 adapted to the first protrusion 31. The first protrusion 31 is connected to the slide rail 22 so that the protective cap 3 is slidably mounted on the outer shell 2. The first protrusion 31 extends through the slide rail 22 for force application. The first protrusion 31 slides along the slide rail 22 under force, so that the protective cap 3 is relative to the outer shell. 2. Extend the protective transfer head 11 or retract it to expose the transfer head 11. A first protrusion 31 is provided on the protective cap 3 and a slide rail 22 is provided on the outer shell 2. The first protrusion 31 cooperates with the slide rail 22 to guide the sliding of the protective cap 3. The first protrusion 31 passes through the slide rail 22 and extends out, which is convenient for the user to apply force. The user can push the protective cap 3 to slide along the slide rail 22 by applying force to the first protrusion 31. The first protrusion 31 provides the user with a clear point of force application, which is convenient for the user to push the protective cap 3 to slide. This solves the problem of sliding difficulty caused by the lack of force application points in traditional designs. The design of the slide rail 22 ensures that the sliding of the protective cap 3 is more stable and smooth, reducing resistance and jamming during the sliding process. The sliding of the protective cap 3 no longer directly depends on the shell. The stress is dispersed by the slide rail 22, reducing the wear on the shell, thereby improving the overall structural stability of the product and avoiding the impact of local stress concentration on the shell strength.

[0031] When it is necessary to use transfer head 11, such as Figure 2 As shown, the user applies force to push the first protrusion 31, causing the protective cap 3 to slide along the slide rail 22 until it is completely retracted into the outer shell 2, so that the transfer head 11 is fully exposed for coating transfer operation. When it is necessary to store the transfer head 11, as shown... Figure 1 As shown, when the user applies force to push the first protrusion 31, the protective cap 3 slides along the slide rail 22 and extends out of the outer shell 2, so that the protective cap 3 completely covers the transfer head 11, preventing the transfer head 11 from being contaminated or damaged, and extending the service life of the transfer head 11.

[0032] The first protrusion 31 is connected to the slide rail 22, allowing the protective cap 3 to slide smoothly along the slide rail 22, realizing the switching from the protective state (covering the transfer head 11) to the use state (exposing the transfer head 11). The length of the slide rail 22 determines the sliding range of the protective cap 3, preventing the protective cap 3 from sliding off the outer shell 2. No additional limiting device is needed, simplifying the product structure. Through the connection and cooperation of the first protrusion 31 and the slide rail 22, not only is the sliding function of the protective cap 3 realized, but the limiting function is also cleverly realized, preventing the protective cap 3 from sliding off the outer shell 2, reducing manufacturing costs and improving assembly efficiency.

[0033] More specifically, such as Figure 4 As shown, the surface of the first protrusion 31 is provided with an anti-slip structure 311, which is used to increase the friction when the user pushes the protective cap 3 to prevent the hand from slipping. The anti-slip structure 311 is usually a strip-shaped or granular protrusion, which can significantly increase the friction with the user's fingers. The user pushes the first protrusion 31 to make the protective cap 3 slide. The design of the anti-slip structure 311 allows the user to apply force more stably, reduces misoperation caused by hand slipping, and makes the operation more effortless and reliable.

[0034] More specifically, such as Figures 4 to 7As shown, the inner wall of the outer shell 2 is provided with a positioning structure 23, and the outer wall of the protective cap 3 is provided with an elastic structure 32 adapted to the positioning structure 23. The positioning structure 23 and the elastic structure 32 are connected to limit the sliding of the protective cap 3. Through the cooperation of the positioning structure 23 and the elastic structure 32, the sliding limit function of the protective cap 3 is realized. Its main function is to provide a fixed limiting point to ensure that the protective cap 3 can accurately stop at the predetermined position. The positioning structure 23 can be a protrusion, a groove, a slot, or other form of fixing structure. The elastic structure 32 can be an elastic protrusion, an elastic buckle, an elastic groove, or other elastic element that can deform under the action of external force and remain in place when the force is removed. After returning to its original state, the elastic structure 32 can detach from the positioning structure 23 through elasticity during the sliding process. When the user pushes the protective cap 3 to slide, the elastic structure 32 slides along the inner wall of the outer shell 2 until it reaches the position of the positioning structure 23, so that the elastic structure 32 connects with the positioning structure 23, so that the protective cap 3 stays in the position of extending the protective transfer head 11 or retracting to expose the transfer head 11, avoiding the exposure or insufficient protection of the transfer head 11 due to inaccurate positioning. The elastic structure 32 can also make the fit between the protective cap 3 and the outer shell 2 tighter and more reliable, making the sliding of the protective cap 3 smoother, improving the reliability of the product and the user experience.

[0035] More specifically, such as Figures 4 to 7As shown, the elastic structure 32 is provided with a first recess 321 and a second recess 322. The first recess 321 and the second recess 322 are slidably connected to the positioning structure 23. The positioning structure 23 is connected to the first recess 321 to make the protective cap 3 extend and lock relative to the outer shell 2. The positioning structure 23 is connected to the second recess 322 to make the protective cap 3 retract and lock relative to the outer shell 2. The elastic structure 32 is provided on the outer wall of the protective cap 3 for cooperating with the positioning structure 23 on the outer shell 2. The elastic structure 32 is provided with the first recess 321 and the second recess 322. The first and second recesses 321 and 322 correspond to the two working positions of the protective cap 3, respectively. The positioning structure 23 is set on the inner wall of the outer shell 2 and can be a protruding fixing structure used to switch between the first and second recesses 321 and 322. When the protective cap 3 slides under force, the first or second recess 321 on the elastic structure 32 connects with the positioning structure 23, realizing the switching of the protective cap 3 between the two positions. When the positioning structure 23 connects with the first recess 321, the protective cap 3 extends out, covering the transfer head 11, and positioning. Structure 23 is connected to the second recess 322, the protective cap 3 retracts, exposing the transfer head 11. The design of positioning structure 23 and elastic structure 32 is simple and reliable, improving product reliability and user experience. Alternatively, this application can also provide another specific cooperation method between positioning structure and elastic structure. The elastic structure 32 is provided with a fourth protrusion and a fifth protrusion. The fourth protrusion and the fifth protrusion are connected to the positioning structure 23 by sliding. The positioning structure 23 is connected to the fourth protrusion so that the protective cap 3 extends and locks relative to the outer shell 2. The positioning structure 23 is connected to the fifth protrusion so that the protective cap 3 retracts and locks relative to the outer shell 2. The elastic structure 32 is provided with a fourth protrusion and a fifth protrusion. These two protrusions correspond to the two working positions of the protective cap 3 respectively. The positioning structure 23 is provided on the inner wall of the outer shell 2 and can be a groove-shaped fixing structure used to switch the connection between the fourth protrusion and the fifth protrusion. The fourth protrusion corresponds to the aforementioned first recess 321, and the fifth protrusion corresponds to the aforementioned second recess 322. The two protrusions play the same role as the aforementioned two recesses, and the cooperation method is also the same, so it will not be described in detail.

[0036] More specifically, such as Figure 4As shown, the protective cap 3 is provided with an elastic groove 33 adjacent to the elastic structure 32. The elastic structure 32 is an elastic arm, and the first protrusion 31 is provided on the elastic structure 32. By providing the elastic groove 33 on the protective cap 3, the elastic structure 32 is provided on the protective cap 3. Its specific structure is an elastic arm. The elastic arm has a certain elasticity through the elastic groove 33. The design of the elastic groove 33 provides deformation space for the elastic arm. The design of the elastic groove 33 reduces the stress concentration of the elastic arm during deformation, and improves the service life and reliability of the elastic arm. The first protrusion 31 is provided on the elastic structure 32. The elastic design of the elastic arm allows the first protrusion 31 to fit tightly with the positioning structure 23, which improves the stability of the protective cap 3 during the sliding process.

[0037] More specifically, such as Figure 3 , Figure 8 and Figure 9 As shown, the main body 1 is provided with a first side flat wall 12 and a second side flat wall 13. The first side flat wall 12 and the second side flat wall 13 cooperate to support the protective cap 3. The elastic structure 32 abuts against the first side flat wall 12. The main function of the first side flat wall 12 and the second side flat wall 13 is to provide stable support for the protective cap 3 and ensure that the protective cap 3 can move smoothly during the sliding process. The elastic structure 32 directly contacts the first side flat wall 12 to form an abutment relationship, so that the elastic structure 32 can be effectively supported during the sliding process. When the user pushes the protective cap 3 to slide, the first protrusion 31 on the elastic structure 32 slides along the slide rail 22 on the outer shell 2, while the elastic structure 32 itself moves smoothly under the support of the first side flat wall 12, and the overall structural strength is better.

[0038] More specifically, such as Figure 3 and Figure 8 As shown, the first side flat wall 12 is provided with a receiving groove 121 adapted to the elastic structure 32. The elastic structure 32 is slidably connected to the receiving groove 121. The elastic structure 32 is preferably an elastic arm. The elastic structure 32 protrudes relative to the protective cap 3. The receiving groove 121 is provided on the first side flat wall 12 to accommodate the protruding part of the elastic structure 32. The shape and size of the receiving groove 121 are adapted to the elastic structure 32 to ensure that the elastic structure 32 can slide smoothly in it. The receiving groove 121 provides a sliding path for the elastic structure 32, so that it can slide along a predetermined trajectory, avoids interference with the sliding of the protective cap 3, reduces the resistance during the sliding process, and makes the sliding of the protective cap 3 smoother.

[0039] More specifically, such as Figure 9As shown, the second side flat wall 13 is provided with a limiting protrusion 131 that is adapted to the protective cap 3. The bottom of the protective cap 3 abuts against the limiting protrusion 131 to limit the sliding of the protective cap 3. The limiting protrusion 131 is provided on the second side flat wall 13 and is adapted to the bottom of the protective cap 3. The main function of the limiting protrusion 131 is to limit the sliding range of the protective cap 3 and prevent the protective cap 3 from sliding excessively during the retraction process. The shape and size of the limiting protrusion 131 are adapted to the bottom of the protective cap 3 to ensure that the two can make close contact and realize the limiting function. The limiting protrusion 131 provides a clear limiting point for the protective cap 3. When the user pushes the protective cap 3 to slide, he can intuitively feel the limiting position, making the operation more convenient.

[0040] More specifically, such as Figure 4 and Figure 5 As shown, a second protrusion 24 is provided inside the outer shell 2, and a guide groove 34 adapted to the second protrusion 24 is provided on the protective cap 3. The second protrusion 24 is connected to the guide groove 34 to guide the protective cap 3 to slide. The shape and size of the second protrusion 24 are adapted to the guide groove 34 to ensure that the two can fit tightly and realize the sliding guide function. This ensures that the protective cap 3 can move smoothly along the predetermined trajectory and prevents the protective cap 3 from shaking or deviating from the predetermined trajectory during the sliding process, thus improving the accuracy of operation. The guide groove 34 and the second protrusion 24 are both elongated, and their length direction is consistent with the sliding direction of the protective cap 3 to ensure smooth sliding.

[0041] More specifically, such as Figure 4 As shown, the guide groove 34 is provided with a second opening 341, which is funnel-shaped. The second opening 341 is used for the second protrusion 24 to be inserted into the guide groove 34. By providing the guide groove 34 with a funnel-shaped second opening 341, the main function of the funnel-shaped second opening 341 is to guide the second protrusion 24 to be smoothly inserted into the guide groove 34, reducing the difficulty of alignment during installation. The shape of the funnel-shaped second opening 341 is similar to a gradually narrowing channel, with its larger end facing outward and its smaller end connected to the inside of the guide groove 34, so that the second protrusion 24 can enter the guide groove 34 more easily, and can be smoothly inserted even if the alignment is not completely precise, reducing friction and resistance during installation.

[0042] More specifically, such as Figure 5 and Figure 9As shown, the outer shell 2 has multiple third protrusions 25 inside, and the main body 1 has multiple limiting grooves 14 that fit the third protrusions 25. The third protrusions 25 and the limiting grooves 14 are snap-fitted together to limit the installation of the outer shell 2 onto the main body 1. The third protrusions 25 are located on the inner wall of the outer shell 2 to cooperate with the limiting grooves 14 on the main body 1. The snap-fit ​​connection between the third protrusions 25 and the limiting grooves 14 achieves the limiting installation of the outer shell 2 and the main body 1. The shape and size of the third protrusions 25 are adapted to the limiting grooves 14 to ensure that the two are properly positioned. The snap-fit ​​design allows for a tight fit and stable connection. During assembly, the third protrusion 25 is inserted into the limiting groove 14, and the outer shell 2 is fixed to the main body 1 through the snap-fit ​​connection. The snap-fit ​​connection design makes the assembly process simple and quick, without the need for additional fasteners, thus improving assembly efficiency. Both the third protrusion 25 and the limiting groove 14 are triangular in structure, which gives them better stability and pull-out resistance during the snap-fit ​​connection, ensuring that the outer shell 2 will not loosen or shift during use, thus improving the overall stability of the product.

[0043] 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 coating transfer tool with a protective cap, comprising a body (1), wherein a transfer head (11) is provided at the end of the body (1), characterized in that, It also includes an outer shell (2) and a protective cap (3). The outer shell (2) is fitted onto the main body (1). The protective cap (3) is located between the outer shell (2) and the main body (1). The outer shell (2) has a first opening (21) for the transfer head (11) to extend out. The protective cap (3) has a first protrusion (31). The outer shell (2) has a slide rail (22) adapted to the first protrusion (31). The first protrusion (31) is connected to the slide rail (22) so that the protective cap (3) is slidably mounted on the outer shell (2). The first protrusion (31) extends through the slide rail (22) for force application. The first protrusion (31) slides along the slide rail (22) under force so that the protective cap (3) extends out relative to the outer shell (2) to protect the transfer head (11) or retracts to expose the transfer head (11).

2. A coating transfer tool with a protective cap according to claim 1, characterized in that, The inner wall of the outer shell (2) is provided with a positioning structure (23), and the outer wall of the protective cap (3) is provided with an elastic structure (32) adapted to the positioning structure (23). The positioning structure (23) and the elastic structure (32) are connected to limit the sliding of the protective cap (3).

3. A coating transfer tool with a protective cap according to claim 2, characterized in that, The elastic structure (32) is provided with a first recess (321) and a second recess (322). The first recess (321) and the second recess (322) are connected to a positioning structure (23) by sliding. The positioning structure (23) is connected to the first recess (321) so that the protective cap (3) extends and locks relative to the outer shell (2). The positioning structure (23) is connected to the second recess (322) so that the protective cap (3) retracts and locks relative to the outer shell (2). Alternatively, the elastic structure (32) is provided with a fourth protrusion and a fifth protrusion. The fourth protrusion and the fifth protrusion are connected to a positioning structure (23) by sliding. The positioning structure (23) is connected to the fourth protrusion so that the protective cap (3) extends and locks relative to the outer shell (2). The positioning structure (23) is connected to the fifth protrusion so that the protective cap (3) retracts and locks relative to the outer shell (2).

4. A coating transfer tool with a protective cap according to claim 2, characterized in that, The protective cap (3) is provided with an elastic groove (33) adjacent to the elastic structure (32), the elastic structure (32) is an elastic arm, and the first protrusion (31) is provided on the elastic structure (32).

5. A coating transfer tool with a protective cap according to claim 4, characterized in that, The main body (1) is provided with a first side flat wall (12) and a second side flat wall (13) opposite to each other. The first side flat wall (12) and the second side flat wall (13) cooperate to support the protective cap (3). The elastic structure (32) abuts against the first side flat wall (12).

6. A coating transfer tool with a protective cap according to claim 5, characterized in that, The first side wall (12) is provided with a receiving groove (121) adapted to the elastic structure (32), and the elastic structure (32) is slidably connected to the receiving groove (121).

7. A coating transfer tool with a protective cap according to claim 5, characterized in that, The second side flat wall (13) is provided with a limiting protrusion (131) adapted to the protective cap (3), and the bottom of the protective cap (3) abuts against the limiting protrusion (131) to limit the sliding of the protective cap (3).

8. A coating transfer tool with a protective cap according to claim 1, characterized in that, The outer shell (2) is provided with a second protrusion (24), and the protective cap (3) is provided with a guide groove (34) that matches the second protrusion (24). The second protrusion (24) is connected to the guide groove (34) to guide the protective cap (3) to slide.

9. A coating transfer tool with a protective cap according to claim 8, characterized in that, The guide groove (34) is provided with a second opening (341), which is funnel-shaped and is used for the second protrusion (24) to be inserted into the guide groove (34).

10. A coating transfer tool with a protective cap according to claim 1, characterized in that, The outer shell (2) is provided with a plurality of third protrusions (25), and the main body (1) is provided with a plurality of limiting grooves (14) that are adapted to the third protrusions (25). The third protrusions (25) are snapped together with the limiting grooves (14) so ​​that the outer shell (2) is limited and installed on the main body (1).

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