Coating transfer printing device

Abstract

The utility model discloses a coating transfer printing device which comprises a core replacing assembly and a connecting rod, one of the core replacing assembly and the connecting rod is provided with a spherical clamping part, the other one of the core replacing assembly and the connecting rod is provided with an elastic clamping groove, and the spherical clamping part and the elastic clamping groove are detachably connected in the length direction. The ball-shaped clamping part comprises a first hemisphere and a second hemisphere, and a gap is formed between the first hemisphere and the second hemisphere so that the ball-shaped clamping part can have elasticity. The spherical clamping part has elasticity through the gap between the first hemisphere and the second hemisphere, so that the spherical clamping part and the elastic clamping groove are elastically deformed in the inserting process at the same time and abut against each other for limiting after being inserted in place, and the replacement core assembly can be rapidly disassembled and assembled and is not limited by the angle.

Description

Technical Field

[0001] This application relates to the field of office stationery technology, and more specifically to a coating transfer device. Background Technology

[0002] A coating transfer tool is a tool that can transfer the coating on a coating tape onto the surface of other objects. It is also called correction tape or correction tape. Its main function is to apply it to paper to cover up mistakes so that they can be rewritten later, which provides convenience for learning and work. A coating transfer tool generally includes a housing, a transfer head, and a core assembly. The core assembly is fitted with a film strip for transfer. The coating on the film strip is transferred to the surface of other objects through the transfer head. To prevent the transfer head and part of the film strip from being exposed and getting dirty, a protective cap is usually fitted onto the transfer head to protect the correction head and film strip. However, the protective cap needs to be repeatedly opened and closed during actual use, which is not only cumbersome but also easy to lose. Therefore, currently, a drive assembly connected to the core assembly is often used. The drive assembly gives the core assembly a telescopic function similar to an "automatic pen." When in use, the transfer head is exposed, and when not in use, the transfer head is retracted into the housing for protection. Although this protects the transfer head, the core assembly in this type of coating transfer tool cannot be replaced, resulting in poor reusability. To address the aforementioned issues, a utility model patent with authorization announcement number CN215826341U discloses a correction tape, comprising a shell and a core assembly. The core assembly is disposed within the shell, and an opening at the lower end of the shell allows the head of the core assembly to protrude. The shell includes a lower main body portion and a detachable upper cover inserted into the top of the main body portion. The core assembly is installed within the main body portion and has a first limiting part at its top. Correspondingly, the upper cover has a second limiting part that can be detachably connected to the first limiting part. When the upper cover is detached from the main body portion, the core assembly is pulled out of the shell under the constraint of the upper cover. In this technical solution, the shell is configured as a detachable connection between the main body portion and the upper cover, and the upper cover has a fixing rod extending toward the core assembly. The lower end of the rod is detachably connected to the top of the core assembly. This structure facilitates the replacement of the core assembly. When the core assembly needs to be replaced, the top cover is removed from the main body, and the top cover and core assembly are removed together. Then, the core assembly is removed from the top cover, a new core assembly is installed, and it is reinserted into the main body. The top cover and main body are then fastened together to replace the core assembly. The top of the core assembly has a laterally extending slot. Correspondingly, the lower end of the fixing rod has a plug that can be inserted into the slot. The slot constitutes the first limiting part, and the plug constitutes the second limiting part. This core assembly uses a unidirectional horizontal insertion and removal method. Each time it is disassembled or assembled, the direction must be confirmed first, and the installation is limited by the lateral angle, making disassembly and assembly relatively cumbersome and laborious. Therefore, there is still a need for a coating transfer tool that allows for quick disassembly and assembly of the replacement core assembly without angle limitations. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a coating transfer device, which provides a spherical snap-fit ​​part and an elastic snap-fit ​​groove on the core assembly and the connecting rod respectively. The spherical snap-fit ​​part is elastic through the gap between the first hemisphere and the second hemisphere, so that the spherical snap-fit ​​part and the elastic snap-fit ​​groove elastically deform simultaneously during the insertion process and abut against each other after insertion into place, so that the core assembly can be quickly disassembled and assembled without being limited by angle.

[0004] This application provides a coating transfer device, including a core assembly and a connecting rod. One of the core assembly and the connecting rod is provided with a spherical snap-fit ​​portion, and the other of the core assembly and the connecting rod is provided with an elastic snap-fit ​​groove. The spherical snap-fit ​​portion and the elastic snap-fit ​​groove are detachably connected along the length direction. The spherical snap-fit ​​portion includes a first hemisphere and a second hemisphere, and a gap is provided between the first hemisphere and the second hemisphere to make the spherical snap-fit ​​portion elastic.

[0005] In this technical solution, a core assembly and a connecting rod are interconnected. Both the core assembly and the connecting rod are installed inside the housing of the coating transfer device. The connecting rod, when subjected to force, can cause the core assembly to extend and retract relative to the housing, giving the core assembly a telescopic function similar to an "automatic pen." During use, the transfer head of the core assembly is exposed; when not in use, the transfer head retracts into the housing for protection, thus protecting the transfer head. A spherical locking part is provided on one of the core assembly and the connecting rod, and a flexible locking groove is provided on the other. That is, the spherical locking part and the flexible locking groove are provided in two ways: one is that the spherical locking part is provided on the core assembly, and the flexible locking groove is... The first feature is a spherical snap-fit ​​part placed on the connecting rod, and a flexible snap-fit ​​groove placed on the replacement core assembly. The spherical snap-fit ​​part and the flexible snap-fit ​​groove cooperate to allow for a detachable connection between the replacement core assembly and the connecting rod. The replacement core assembly can be removed from the housing via the connecting rod and can be replaced after being detached from the connecting rod. The spherical snap-fit ​​part and the flexible snap-fit ​​groove are detachably connected along the length direction, meaning the replacement core assembly and the connecting rod are assembled and disassembled by plugging and unplugging. Users do not need to confirm the assembly / disassembly direction beforehand, making assembly and disassembly simpler and less prone to errors. The spherical snap-fit ​​part includes a first hemisphere and a second hemisphere with a gap between them. This gap allows the first hemisphere and the second hemisphere to... The hemisphere has space for inward elastic deformation. The spherical locking part is elastic through the gap between the first and second hemispheres. When the replacement core assembly needs to be installed, the spherical locking part and the elastic locking groove are inserted into each other. The first and second hemispheres are elastically deformed inward by the elastic locking groove, and the spherical locking part is elastically deformed outward by the first and second hemispheres. This allows the elastic locking groove to cover the spherical locking part and abut against each other, preventing the replacement core assembly from detaching from the connecting rod. When the replacement core assembly needs to be replaced, the spherical locking part and the elastic locking groove are pulled back to face each other. The first and second hemispheres spring inward by the elastic locking groove. The elastic locking groove deforms outward under the action of the first and second hemispheres, allowing it to detach from the spherical locking part. This enables the core assembly to disengage from the connecting rod, achieving quick assembly and disassembly of the core assembly without angle limitations. On the other hand, compared to a solution where the elastic locking groove is only elastic, it needs to be longer to provide sufficient elasticity to cover the spherical locking part. In this solution, both the spherical locking part and the elastic locking groove are designed to be elastic. Even if the elastic locking groove is made shorter, it still has sufficient elasticity. This results in a shorter overall joint structure between the spherical locking part and the elastic locking groove, which helps to reduce the overall length of the coating transfer device.

[0006] As an improvement, the elastic locking groove is provided with a buckle adapted to the spherical locking part. The buckle connects with the spherical locking part to limit the connection between the replacement core assembly and the connecting rod. In this technical solution, a buckle is provided in the elastic locking groove. After the elastic locking groove and the spherical locking part are inserted into each other, the elastic locking groove covers the outer periphery of the spherical locking part and abuts against the outer periphery of the spherical locking part through the buckle, thereby limiting the spherical locking part from disengaging from the elastic locking groove, thus limiting the connection between the replacement core assembly and the connecting rod, making the connection simpler and more reliable.

[0007] As an improvement, the spherical snap-fit ​​part further includes a first connecting post and a second connecting post. The first connecting post is connected to the first hemisphere, and the second connecting post is connected to the second hemisphere. The first and second hemispheres form a ball head, and the first and second connecting posts form a column. The diameter of the column is smaller than the diameter of the ball head. The elastic snap-fit ​​groove passes through the ball head to the column and is limited on the column by the ball head. In this technical solution, the first and second hemispheres are designed to form the ball head of the spherical snap-fit ​​part, and the first and second connecting posts are designed to form the column of the spherical snap-fit ​​part. The diameter of the column is set to be smaller than the diameter of the ball head. During the opposite insertion process of the elastic snap-fit ​​groove and the spherical snap-fit ​​part, the elastic snap-fit ​​groove passes through the ball head first and then connects to the column. The smaller diameter of the column allows it to accommodate the end of the elastic snap-fit ​​groove. The elastic snap-fit ​​groove covers the ball head and part of the column. The larger diameter of the ball head allows it to abut and limit the elastic snap-fit ​​groove, preventing the elastic snap-fit ​​groove and the spherical snap-fit ​​part from separating on their own.

[0008] As an improvement, the elastic locking groove is composed of multiple spaced-apart spring sheet structures, and the latch is a protrusion structure set on the inner wall of the spring sheet. In this technical solution, the elastic locking groove is composed of multiple spaced-apart spring sheet structures. Adjacent spring sheet structures have space for elastic deformation through the intervals between them, thus making the elastic locking groove elastic. The structure is simple. The latch is designed as a protrusion structure set on the inner wall of the spring sheet. After the elastic locking groove and the spherical locking part are inserted into place, the latch of the protrusion structure abuts against the ball head of the spherical locking part to limit the movement, preventing the elastic locking groove and the spherical locking part from separating on their own. The design is ingenious and the connection is reliable.

[0009] As an improvement, the first hemisphere is provided with a first plane adapted to the elastic snap-fit ​​groove, and the second hemisphere is provided with a second plane adapted to the elastic snap-fit ​​groove. In this technical solution, by providing a first plane on the first hemisphere and a second plane on the second hemisphere, both the first and second planes have a guiding effect on the elastic snap-fit ​​groove. The first hemisphere can be inserted into the elastic snap-fit ​​groove more quickly and smoothly through the first plane, and the second hemisphere can be inserted into the elastic snap-fit ​​groove more quickly and smoothly through the second plane.

[0010] As an improvement, two first planes and two second planes are symmetrically arranged; the first and second planes are on the same plane. In this technical solution, two first planes are symmetrically arranged on the first hemisphere, allowing both sides of the first hemisphere to be inserted into the elastic locking groove more quickly and smoothly through the first planes. Two second planes are symmetrically arranged on the second hemisphere, allowing both sides of the second hemisphere to be inserted into the elastic locking groove more quickly and smoothly through the second planes. The first and second planes are on the same plane, and their cooperation allows the spherical locking part to be inserted into the elastic locking groove more quickly and smoothly, thus making the spherical locking part and the elastic locking groove more effortless and efficient to insert.

[0011] As an improvement, a circular cavity is formed within the elastic snap-fit ​​groove to accommodate the spherical snap-fit ​​part, and the spherical snap-fit ​​part is rotatably connected to the circular cavity. In this technical solution, a circular cavity is provided within the elastic snap-fit ​​groove, and the shape of the circular cavity is more suitable for the spherical snap-fit ​​part. The elastic snap-fit ​​groove accommodates the spherical snap-fit ​​part through the circular cavity, and the spherical snap-fit ​​part can rotate freely within the circular cavity. Therefore, the insertion and removal of the spherical snap-fit ​​part is not limited by angle, that is, the assembly and disassembly of the replacement core assembly is not limited by angle.

[0012] As an improvement, the replacement core assembly includes a first housing and a second housing, which are detachably connected. In this technical solution, the replacement core assembly includes a detachably connected first housing and second housing, allowing for the replacement of internal components such as the membrane belt after the first and second housings are disassembled, facilitating subsequent reuse.

[0013] As an improvement, this application provides a specific arrangement of the spherical snap-fit ​​part and the elastic snap-fit ​​groove. The elastic snap-fit ​​groove is located at the end of the connecting rod, the first hemisphere is located at the end of the first housing, and the second hemisphere is located at the end of the second housing. The first and second housings are connected so that the first and second hemispheres constitute the spherical snap-fit ​​part. In this technical solution, the elastic snap-fit ​​groove is located at the end of the connecting rod, and correspondingly, the spherical snap-fit ​​part is located at the end of the core assembly. The core assembly consists of a detachably connected first and second housings. The first hemisphere is located at the end of the first housing. When the first and second housings are connected, the first and second hemispheres constitute the spherical snap-fit ​​part, and a gap is formed between the first and second hemispheres, making the spherical snap-fit ​​part elastic. The structural design is more reasonable, and production is simpler.

[0014] As an improvement, this application can provide another specific arrangement of the spherical snap-fit ​​part and the elastic snap-fit ​​groove, wherein the spherical snap-fit ​​part is disposed on the end of the connecting rod, a portion of the elastic snap-fit ​​groove is disposed on the end of the first housing, and another portion of the elastic snap-fit ​​groove is disposed on the end of the second housing. In this technical solution, the spherical snap-fit ​​part is disposed on the end of the connecting rod, and correspondingly, the elastic snap-fit ​​groove is disposed on the end of the replacement core assembly. The replacement core assembly consists of a detachably connected first housing and a second housing. A portion of the elastic snap-fit ​​groove's spring structure is disposed on the end of the first housing, and another portion of the spring structure is disposed on the end of the second housing. When the first housing and the second housing are connected, the two portions of the spring structure combine to form a complete elastic snap-fit ​​groove. The structural design is more reasonable and the production is simpler. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a connection structure between the core assembly and the connecting rod in this application.

[0016] Figure 2 For this application Figure 1 An exploded view of the structure shown.

[0017] Figure 3 For this application Figure 2 A magnified view of a portion of point A in the middle.

[0018] Figure 4 For this application Figure 1 A cross-sectional view of the structure shown.

[0019] Figure 5 For this application Figure 4 A magnified view of a portion of point B in the middle.

[0020] Figure 6 This is a three-dimensional structural diagram of the connecting rod in this application.

[0021] Figure 7 This is a schematic diagram of another connection structure between the core assembly and the connecting rod in this application.

[0022] Figure 8 For this application Figure 7 An exploded view of the structure shown.

[0023] Figure 9 For this application Figure 8 A magnified view of a portion of point C.

[0024] The figure shows: 1. Replacement core assembly; 11. First housing; 12. Second housing; 2. Connecting rod; 3. Spherical snap-fit ​​part; 31. First hemisphere; 311. First plane; 32. Second hemisphere; 321. Second plane; 33. Gap; 34. First connecting post; 35. Second connecting post; 4. Elastic snap-fit ​​groove; 41. Buckle; 42. Spring sheet structure; 43. Circular cavity. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] Example 1

[0030] like Figures 1 to 9 As shown, this application discloses a coating transfer device, including a core assembly 1 and a connecting rod 2. The core assembly 1 and the connecting rod 2 are connected to each other and are both installed in the outer shell of the coating transfer device. When the connecting rod 2 is subjected to force, it can drive the core assembly 1 to extend and retract relative to the outer shell, so that the core assembly 1 has a telescopic function similar to an "automatic pen". When in use, the transfer head of the core assembly 1 is exposed, and when not in use, the transfer head of the core assembly 1 is retracted into the outer shell for protection, thus protecting the transfer head.

[0031] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, one of the core assembly 1 and the connecting rod 2 is provided with a spherical snap-fit ​​part 3, and the other of the core assembly 1 and the connecting rod 2 is provided with an elastic snap-fit ​​groove 4. That is, the spherical snap-fit ​​part 3 and the elastic snap-fit ​​groove 4 are provided in two ways, one of which is: Figure 2 As shown, the spherical snap-fit ​​part 3 is disposed on the core-replacement assembly 1, and the elastic snap-fit ​​groove 4 is disposed on the connecting rod 2. Secondly, as shown... Figure 8 As shown, the spherical snap-fit ​​part 3 is disposed on the connecting rod 2, and the elastic snap-fit ​​groove 4 is disposed on the replacement core assembly 1; the spherical snap-fit ​​part 3 and the elastic snap-fit ​​groove 4 are detachably connected along the length direction. The replacement core assembly 1 and the connecting rod 2 are detachably connected by the cooperation of the spherical snap-fit ​​part 3 and the elastic snap-fit ​​groove 4. The replacement core assembly 1 can be taken out of the housing through the connecting rod 2. The replacement core assembly 1 can be replaced after being removed from the connecting rod 2. The detachable connection of the spherical snap-fit ​​part 3 and the elastic snap-fit ​​groove 4 along the length direction means that the replacement core assembly 1 and the connecting rod 2 can be disassembled and installed by plugging and unplugging. Users do not need to confirm the disassembly and installation direction in advance, making disassembly and installation simpler and less prone to errors.

[0032] The spherical snap-fit ​​part 3 includes a first hemisphere 31 and a second hemisphere 32. A gap 33 is provided between the first hemisphere 31 and the second hemisphere 32 to make the spherical snap-fit ​​part 3 elastic. The spherical snap-fit ​​part 3 includes a first hemisphere 31 and a second hemisphere 32 with a gap 33 provided opposite to each other. The gap 33 allows the first hemisphere 31 and the second hemisphere 32 to have space for inward elastic deformation. The spherical snap-fit ​​part 3 is elastic through the gap 33 between the first hemisphere 31 and the second hemisphere 32.

[0033] When the replacement core assembly 1 needs to be installed, the spherical snap-fit ​​part 3 and the elastic snap-fit ​​groove 4 are inserted into each other. The first hemisphere 31 and the second hemisphere 32 are elastically deformed inward by the action of the elastic snap-fit ​​groove 4, and the spherical snap-fit ​​part 3 is elastically deformed outward by the action of the first hemisphere 31 and the second hemisphere 32, so that the elastic snap-fit ​​groove 4 can cover the spherical snap-fit ​​part 3 and abut against each other to limit the movement, thus preventing the replacement core assembly 1 from separating from the connecting rod 2 on its own.

[0034] When it is necessary to replace the replacement core assembly 1, the spherical locking part 3 and the elastic locking groove 4 are pulled back to each other. The first hemisphere 31 and the second hemisphere 32 are elastically deformed inward by the action of the elastic locking groove 4, and the elastic locking groove 4 is elastically deformed outward by the action of the first hemisphere 31 and the second hemisphere 32, so that the elastic locking groove 4 can be separated from the spherical locking part 3, thereby allowing the replacement core assembly 1 to be separated from the connecting rod 2, realizing the quick disassembly and assembly of the replacement core assembly 1 without angle limitation.

[0035] On the other hand, compared to a single elastic snap-fit ​​groove 4, which requires a longer elasticity to adequately cover the spherical snap-fit ​​part 3, this design incorporates elasticity in both the spherical snap-fit ​​part 3 and the elastic snap-fit ​​groove 4. Even if the elastic snap-fit ​​groove 4 is made shorter, it still has sufficient elasticity, resulting in a shorter overall joint structure between the spherical snap-fit ​​part 3 and the elastic snap-fit ​​groove 4. This helps to reduce the overall length of the coating transfer device.

[0036] More specifically, such as Figures 3 to 5 As shown, the elastic locking groove 4 is provided with a buckle 41 that is adapted to the spherical locking part 3. The buckle 41 is connected to the spherical locking part 3 to limit the connection between the replacement core assembly 1 and the connecting rod 2. The buckle 41 is provided in the elastic locking groove 4. After the elastic locking groove 4 and the spherical locking part 3 are inserted into each other, the elastic locking groove 4 covers the outer periphery of the spherical locking part 3 and abuts against the outer periphery of the spherical locking part 3 through the buckle 41, thereby limiting the spherical locking part 3 from disengaging from the elastic locking groove 4, so that the connection between the replacement core assembly 1 and the connecting rod 2 is limited, and the connection is simpler and more reliable.

[0037] More specifically, such as Figure 3 and Figure 5 As shown, the spherical snap-fit ​​part 3 also includes a first connecting post 34 and a second connecting post 35. The first connecting post 34 is connected to the first hemisphere 31, and the second connecting post 35 is connected to the second hemisphere 32. The first hemisphere 31 and the second hemisphere 32 form a ball head, and the first connecting post 34 and the second connecting post 35 form a column. The diameter of the column is smaller than the diameter of the ball head. The elastic snap-fit ​​groove 4 passes through the ball head to the column and is limited to the column by the ball head. The first hemisphere 31 and the second hemisphere 32 are designed to form the spherical snap-fit ​​part 3. The ball head is designed with a first connecting post 34 and a second connecting post 35 forming the column of the spherical snap-fit ​​part 3. The diameter of the column is smaller than the diameter of the ball head. During the process of the elastic snap-fit ​​groove 4 and the spherical snap-fit ​​part 3 being inserted into each other, the elastic snap-fit ​​groove 4 passes through the ball head first and then connects to the column. The smaller diameter of the column can accommodate the end of the elastic snap-fit ​​groove 4. The elastic snap-fit ​​groove 4 covers the ball head and part of the column. The larger diameter of the ball head can abut and limit the elastic snap-fit ​​groove 4, preventing the elastic snap-fit ​​groove 4 and the spherical snap-fit ​​part 3 from separating on their own.

[0038] More specifically, such as Figure 3 and Figure 5 As shown, the elastic snap-fit ​​groove 4 is composed of multiple spring sheet structures 42 spaced apart. The buckle 41 is a protrusion structure set on the inner wall of the spring sheet. The elastic snap-fit ​​groove 4 is composed of multiple spring sheet structures 42 spaced apart. The adjacent spring sheet structures 42 have space for elastic deformation through the interval between them, so that the elastic snap-fit ​​groove 4 is elastic. The structure is simple. The buckle 41 is designed as a protrusion structure set on the inner wall of the spring sheet. After the elastic snap-fit ​​groove 4 and the spherical snap-fit ​​part 3 are inserted into place, the buckle 41 of the protrusion structure abuts against the ball head of the spherical snap-fit ​​part 3 to limit the movement and prevent the elastic snap-fit ​​groove 4 and the spherical snap-fit ​​part 3 from separating on their own. The design is ingenious and the connection is reliable.

[0039] More specifically, such as Figure 3 As shown, the first hemisphere 31 is provided with a first plane 311 that is adapted to the elastic snap-fit ​​groove 4, and the second hemisphere 32 is provided with a second plane 321 that is adapted to the elastic snap-fit ​​groove 4. By providing the first plane 311 on the first hemisphere 31 and the second plane 321 on the second hemisphere 32, both the first plane 311 and the second plane 321 have a guiding effect on the elastic snap-fit ​​groove 4. The first hemisphere 31 can be inserted into the elastic snap-fit ​​groove 4 more quickly and smoothly through the first plane 311, and the second hemisphere 32 can be inserted into the elastic snap-fit ​​groove 4 more quickly and smoothly through the second plane 321.

[0040] More specifically, such as Figure 3 As shown, two first planes 311 and two second planes 321 are symmetrically arranged. The first planes 311 and 321 are on the same plane. The first hemisphere 31 has two symmetrically arranged first planes 311, which allows both sides of the first hemisphere 31 to be inserted into the elastic locking groove 4 more quickly and smoothly through the first planes 311. The second hemisphere 32 has two symmetrically arranged second planes 321, which allows both sides of the second hemisphere 32 to be inserted into the elastic locking groove 4 more quickly and smoothly through the second planes 321. The first planes 311 and 321 are on the same plane. The cooperation of the first planes 311 and 321 allows the spherical locking part 3 to be inserted into the elastic locking groove 4 more quickly and smoothly, thereby making the spherical locking part 3 and the elastic locking groove 4 more effortless and efficient to insert into each other.

[0041] More specifically, such as Figure 5As shown, a circular cavity 43 is formed in the elastic snap-fit ​​groove 4 to accommodate the spherical snap-fit ​​part 3. The spherical snap-fit ​​part 3 is rotatably connected to the circular cavity 43. The circular cavity 43 is provided in the elastic snap-fit ​​groove 4, and the shape of the circular cavity 43 is more suitable for the spherical snap-fit ​​part 3. The elastic snap-fit ​​groove 4 accommodates the spherical snap-fit ​​part 3 through the circular cavity 43, and the spherical snap-fit ​​part 3 can rotate freely in the circular cavity 43. Therefore, the insertion and removal of the spherical snap-fit ​​part 3 is not limited by the angle, that is, the disassembly and assembly of the replacement core assembly 1 is not limited by the angle.

[0042] Example 2

[0043] like Figures 1 to 6 As shown, this embodiment is based on the coating transfer device disclosed in Embodiment 1, and its structure is the same as that of Embodiment 1. The replacement core assembly 1 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are detachably connected. The replacement core assembly 1 includes a first housing 11 and a second housing 12 that are detachably connected. After the first housing 11 and the second housing 12 are disassembled, the internal film tape and other components can be replaced, which is convenient for subsequent reuse.

[0044] More specifically, the elastic snap-fit ​​groove 4 is disposed on the end of the connecting rod 2, the first hemisphere 31 is disposed on the end of the first housing 11, and the second hemisphere 32 is disposed on the end of the second housing 12. The first housing 11 and the second housing 12 are connected so that the first hemisphere 31 and the second hemisphere 32 form a spherical snap-fit ​​part 3. The elastic snap-fit ​​groove 4 is disposed on the end of the connecting rod 2. Correspondingly, the spherical snap-fit ​​part 3 is disposed on the end of the core assembly 1. The core assembly 1 is composed of a detachably connected first housing 11 and a second housing 12. The first hemisphere 31 is disposed on the end of the first housing 11. When the first housing 11 and the second housing 12 are connected, the first hemisphere 31 and the second hemisphere 32 form a spherical snap-fit ​​part 3, and a gap 33 is formed between the first hemisphere 31 and the second hemisphere 32, so that the spherical snap-fit ​​part 3 is elastic. The structural design is more reasonable and the production is simpler.

[0045] Example 3

[0046] like Figures 7 to 9 As shown, this embodiment is based on the coating transfer device disclosed in Embodiment 1, and its structure is the same as that of Embodiment 1. The replacement core assembly 1 includes a first housing 11 and a second housing 12. The first housing 11 and the second housing 12 are detachably connected. The replacement core assembly 1 includes a first housing 11 and a second housing 12 that are detachably connected. After the first housing 11 and the second housing 12 are disassembled, the internal film tape and other components can be replaced, which is convenient for subsequent reuse.

[0047] More specifically, the spherical snap-fit ​​part 3 is disposed on the end of the connecting rod 2, a part of the elastic snap-fit ​​groove 4 is disposed on the end of the first housing 11, and another part of the elastic snap-fit ​​groove 4 is disposed on the end of the second housing 12. The spherical snap-fit ​​part 3 is disposed on the end of the connecting rod 2, and correspondingly, the elastic snap-fit ​​groove 4 is disposed on the end of the core assembly 1. The core assembly 1 is composed of a detachably connected first housing 11 and a second housing 12. A part of the elastic snap-fit ​​groove 42 is disposed on the end of the first housing 11, and another part of the elastic snap-fit ​​groove 42 is disposed on the end of the second housing 12. When the first housing 11 and the second housing 12 are connected, the two parts of the elastic snap-fit ​​groove 4 are combined to form a complete elastic snap-fit ​​groove 4. The structural design is more reasonable and the production is simpler.

[0048] 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 device, comprising a core assembly (1) and a connecting rod (2), characterized in that, One of the core assembly (1) and the connecting rod (2) is provided with a spherical snap-fit ​​part (3), and the other of the core assembly (1) and the connecting rod (2) is provided with an elastic snap-fit ​​groove (4). The spherical snap-fit ​​part (3) and the elastic snap-fit ​​groove (4) are detachably connected along the length direction. The spherical snap-fit ​​part (3) includes a first hemisphere (31) and a second hemisphere (32). A gap (33) is provided between the first hemisphere (31) and the second hemisphere (32) so that the spherical snap-fit ​​part (3) is elastic.

2. The coating transfer device according to claim 1, characterized in that, The elastic snap groove (4) is provided with a buckle (41) that is adapted to the spherical snap part (3). The buckle (41) is connected to the spherical snap part (3) so that the core assembly (1) and the connecting rod (2) are connected and limited.

3. A coating transfer device according to claim 1 or 2, characterized in that, The spherical snap-fit ​​part (3) further includes a first connecting post (34) and a second connecting post (35). The first connecting post (34) is connected to the first hemisphere (31), and the second connecting post (35) is connected to the second hemisphere (32). The first hemisphere (31) and the second hemisphere (32) constitute a ball head, and the first connecting post (34) and the second connecting post (35) constitute a column. The diameter of the column is smaller than the diameter of the ball head, and the elastic snap-fit ​​groove (4) passes through the ball head to the column and is limited to the column by the ball head.

4. A coating transfer device according to claim 2, characterized in that, The elastic snap groove (4) is composed of multiple spring sheet structures (42) spaced apart, and the buckle (41) is a protrusion structure set on the inner wall of the spring sheet.

5. A coating transfer device according to claim 1, characterized in that, The first hemisphere (31) is provided with a first plane (311) that is adapted to the elastic snap-fit ​​groove (4), and the second hemisphere (32) is provided with a second plane (321) that is adapted to the elastic snap-fit ​​groove (4).

6. A coating transfer device according to claim 5, characterized in that, The first plane (311) is symmetrically arranged in two forms, and the second plane (321) is symmetrically arranged in two forms; the first plane (311) and the second plane (321) are on the same plane.

7. A coating transfer device according to claim 1, characterized in that, The elastic snap groove (4) has a circular cavity (43) that accommodates the spherical snap part (3), and the spherical snap part (3) is rotatably connected to the circular cavity (43).

8. A coating transfer device according to claim 1, characterized in that, The replacement core assembly (1) includes a first housing (11) and a second housing (12), which are detachably connected.

9. A coating transfer device according to claim 8, characterized in that, The elastic snap-fit ​​groove (4) is provided on the end of the connecting rod (2), the first hemisphere (31) is provided on the end of the first housing (11), and the second hemisphere (32) is provided on the end of the second housing (12). The first housing (11) and the second housing (12) are connected so that the first hemisphere (31) and the second hemisphere (32) form a spherical snap-fit ​​part (3).

10. A coating transfer device according to claim 8, characterized in that, The spherical snap-fit ​​part (3) is disposed on the end of the connecting rod (2), a part of the elastic snap-fit ​​groove (4) is disposed on the end of the first housing (11), and the other part of the elastic snap-fit ​​groove (4) is disposed on the end of the second housing (12).

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