Protective film and film pasting device
By setting the first film layer and the second film layer in the positioning layer of the protective film, the user can simply push the film pressing member through the junction of the two films after completing the exhaust, and tear the corresponding film layer, solving the problem of cumbersome tearing off the positioning layer in the prior art, achieving simplification and efficiency of the film pasting process.
Patent Information
- Application Number
- CN202421384394.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-06-17
AI Technical Summary
The positioning layer of the existing protective film is usually arranged as a whole piece structure, resulting in a tedious operation required to push the film pressing tool to the end of the film sticker before tearing off the positioning layer after completing the exhaust operation.
A protective film is designed, and its positioning layer consists of a first film layer and a second film layer. After completing the exhaust, the user only needs to push the film press through the junction of the two films to tear the corresponding film layer.
It simplifies the user's film tearing operation, making the film pasting process more convenient and efficient.
Smart Images

Figure CN222846654U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electronic equipment accessories, and more specifically, to a protective film and a film sticking device. Background Art
[0002] With the development of technology, more and more electronic equipment products appear in people's work, social or entertainment, and have become an indispensable part of people's lives. In order to prevent the screens of electronic devices from being damaged by external factors, many people choose to apply film on the screens of electronic devices.
[0003] At present, in order to avoid the interference of dust in the air during the film application process, users usually use a film applicator to assist in film application, and use a film pressing tool to stick the protective film tightly on the screen of the electronic device and remove the bubbles between the screen of the electronic device and the protective film. The protective film usually has a multi-layer structure, such as a protective layer for protecting the screen, a positioning layer for preventing the protective layer from being damaged during transportation, etc. After sticking the protective layer on the screen, the user can tear off the positioning layer to complete the film application.
[0004] However, the existing protective layer is usually set as a whole piece structure. After the exhaust operation is completed, the film pressing tool needs to be pushed to the end of the film applicator before the positioning layer can be torn off. This operation is relatively cumbersome. Utility Model Content
[0005] The embodiments of the present application provide a protective film and a film sticking device to at least partially improve the above-mentioned problems.
[0006] The implementation method of the present application is achieved through the following technical solutions.
[0007] On the one hand, an embodiment of the present application provides a protective film, comprising a positioning layer, a protective layer, a release layer, and a pull tape arranged on the release layer stacked in sequence, the positioning layer comprising a first film layer and a second film layer, the first film layer and the second film layer are both provided with a first positioning piece, the first film layer covers a portion of the surface of the protective layer, and the second film layer covers at least a portion of the remaining surface of the protective layer.
[0008] In some embodiments, the first film layer includes a first covering portion and a first extending portion connected to each other, the first covering portion covers the partial surface, and the first extending portion extends out of the protective layer;
[0009] The second film layer includes a second covering portion and a second extending portion which are connected to each other, the second covering portion covers the at least partial area, and the second extending portion extends out of the protective layer.
[0010] In some embodiments, the first covering portion and the second covering portion are disposed adjacent to each other, and the first extending portion and the second extending portion extend in opposite directions.
[0011] In some embodiments, the first protruding portion or the second protruding portion is provided with a draw groove, and the draw belt extends from the draw groove.
[0012] In some embodiments, the positioning layer further includes a tearing portion, the tearing portion is disposed on the first film layer and / or the second film layer, and the tearing portion extends out of the protective layer.
[0013] In some embodiments, the tearing portion includes a first tearing portion and a second tearing portion, wherein the first tearing portion is disposed on the first film layer and close to an end of the first film layer, and the second tearing portion is disposed on the second film layer and close to an end of the second film layer.
[0014] In some embodiments, the first tear-off portion and the second tear-off portion are respectively located on two opposite sides of the protective layer.
[0015] On the other hand, an embodiment of the present application also provides a film sticking device, including a film sticking assembly and a protective film as described above, wherein the film sticking assembly includes a base and a film pressing member, the base is provided with a second positioning member and an installation space for installing an electronic device, and the film pressing member is slidably arranged on the base; the first positioning member of the protective film can be detachably connected to the second positioning member.
[0016] In some embodiments, the base is provided with a slide groove, the film pressing member includes a body and a scraper blade, the body is slidably embedded in the slide groove, and the scraper blade is arranged on the body and faces the installation space.
[0017] In some embodiments, the end of the scraper blade is configured to be arc-shaped; and / or the scraper blade is made of a flexible material.
[0018] In some embodiments, the base is provided with a limiting portion, and the limiting portion is used to limit the sliding track of the film pressing member.
[0019] In some embodiments, the limiting portion is located at one side of the installation space, and a height of the limiting portion protruding from the base is greater than a height of a surface of the die pressing member close to the base protruding from the base.
[0020] The protective film provided in the embodiment of the present application is provided with a positioning layer as a first film layer and a second film layer, and the first film layer is provided to cover part of the surface of the protective film, and the second film layer is provided to cover at least part of the remaining surface of the protective film. After the user uses the film pressing member to complete the exhaust, the user only needs to push the film pressing member through the junction of the first film layer and the second film layer to perform the film tearing operation on the first film layer or the second film layer. The protective film provided in the embodiment of the present application can simplify the film tearing operation of the user. When the protective film provided in the embodiment of the present application is applied to the film sticking device, the film sticking device can also have the effect of simplifying the film tearing operation of the user. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the implementation mode of the present application, the drawings required for use in the description of the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 A schematic structural diagram of a film sticking device in one embodiment is shown.
[0023] Figure 2 A schematic structural diagram of a film sticking assembly in one embodiment is shown.
[0024] Figure 3 A schematic structural diagram of a film pressing member in a film pasting assembly in one embodiment is shown.
[0025] Figure 4 An exploded view of a protective film in a film sticking device in one embodiment is shown.
[0026] Figure numerals: film laminating device 1, protective film 10, positioning layer 110, first film layer 111, groove 1111, first covering portion 1112, first extending portion 1113, second film layer 112, second covering portion 1121, second extending portion 1122, first positioning member 113, tearing portion 114, first tearing portion 1141, second tearing portion 1142, protective layer 120, release layer 130, draw tape 140, film laminating assembly 20, base 210, second positioning member 211, installation space 212, slide groove 213, limiting portion 214, film pressing member 220, main body 221, scraper blade 222.
[0027] P2CN-LHJS240030(PT-LH202426261U) DETAILED DESCRIPTION
[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the implementation mode of the present application. Obviously, the described implementation mode is only a part of the implementation mode of the utility model, not all the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by those skilled in the art without making creative work are within the scope of protection of the utility model.
[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application.
[0030] With the development of technology, more and more electronic equipment products appear in people's work, social or entertainment, and have become an indispensable part of people's lives. In order to prevent the screens of electronic devices from being damaged by external factors, many people choose to apply film on the screens of electronic devices.
[0031] At present, in order to avoid the interference of dust in the air during the film application process, users usually use a film applicator to assist in film application, and use a film pressing tool to stick the protective film tightly on the screen of the electronic device and remove the bubbles between the screen of the electronic device and the protective film. The protective film usually has a multi-layer structure, such as a protective layer for protecting the screen, a positioning layer for preventing the protective layer from being damaged during transportation, etc. After sticking the protective layer on the screen, the user can tear off the positioning layer to complete the film application.
[0032] However, the existing protective layer is usually set as a whole piece structure. After the exhaust operation is completed, the laminating tool needs to be pushed to the end of the film applicator before the positioning layer can be torn off. Specifically, the user needs to push the laminating tool to one end of the film applicator, and then tear off a part of the positioning layer from the end away from the laminating tool. Then, the laminating tool needs to be pushed to the other end of the film applicator so that the entire positioning layer can be torn off. This operation is relatively cumbersome.
[0033] Based on the above questions, please refer to Figure 1 The present invention provides a film sticking device 1, which can be used to stick a film on an electronic device. The film sticking device 1 provided in the present invention can include: a film sticking assembly 20 and a protective film 10, and the protective film 10 can be installed in the film sticking assembly 20.
[0034] For details, please also refer to Figure 1 and Figure 2, the film assembly 20 may include a base 210 and a film pressing member 220. The base 210 may be used to place an electronic device so as to facilitate film application to the electronic device. In this embodiment, the base 210 may be provided with an installation space 212 for installing the electronic device. When the user applies film to the electronic device, the electronic device may be placed in the installation space 212. The embodiment of the present application does not limit the specific structure and form of the base 210. For example, it may be set to a rectangular shape or other user-defined shapes, etc., which are not limited here. The embodiment of the present application also does not limit the formation method of the installation space 212. For example, it may be a groove or an opening, etc., which may be set specifically according to actual conditions. The embodiment of the present application also does not limit the specific shape of the installation space 212. For example, in one embodiment, the projection of the installation space 212 may be set to a rectangle. In another embodiment, the projection of the installation space 212 may be set to a square, etc., which may be set specifically according to the actual structure of the electronic device. For the convenience of explanation, the projection of the installation space 212 is a rectangle as an example for explanation.
[0035] Furthermore, in this embodiment, the base 210 may also be provided with a second positioning member 211, and the second positioning member 211 may be used to cooperate with the protective film 10 and fix the protective film 10 to the base 210, so as to facilitate the subsequent film application of the electronic device. It is understandable that the protective film 10 may also be provided with a first positioning member 113 that cooperates with the second positioning member 211. The embodiment of the present application does not limit the specific forms of the first positioning member 113 and the second positioning member 211. The first positioning member 113 may be detachably connected to the second positioning member 211. For example, in one embodiment, the first positioning member 113 may be a positioning hole, and the second positioning member 211 may be a positioning pin. In another embodiment, the first positioning member 113 may be a positioning column, and the second positioning member 211 may be a positioning hole, etc., which are not limited here.
[0036] In addition, the base 210 may also be provided with a slide groove 213, which can be used for the film pressing member 220 to slide on the base 210, and to implement film application and exhaust operations during the sliding process. The embodiment of the present application does not limit the location of the slide groove 213. For example, in one embodiment, the slide groove 213 can be provided on both sides of the base 210, so that the film pressing member 220 can be more stable when sliding relative to the base 210. In addition, the embodiment of the present application does not limit the length of the slide groove 213. For example, the length of the slide groove 213 can be at least greater than the length of the installation space 212 to ensure that the film pressing member 220 can fully apply film and exhaust during the sliding process.
[0037] In one embodiment, the base 210 may also be provided with a limiting portion 214, which may be used to limit the sliding track of the film pressing member 220 to prevent the film pressing member 220 from sliding out of the base 210 during the sliding process relative to the base 210. The embodiment of the present application does not limit the specific structure of the limiting portion 214. For example, in one embodiment, the limiting portion 214 may be provided as a rod or columnar structure and provided along the length direction of the installation space 212. When the film pressing member 220 is in the process of sliding relative to the base 210, the limiting portion 214 may be used to block the film pressing member 220 to achieve the limitation of the film pressing member 220.
[0038] In another embodiment, the limiting portion 214 can be set as a block structure and protrude from the base 210. Specifically, the limiting portion 214 can be located on one side of the installation space 212, and the height of the limiting portion 214 protruding from the base 210 is greater than the height of the surface of the die pressing member 220 close to the base 210 protruding from the base 210. In this way, the die pressing member 220 can also be limited by the blocking of the limiting portion 214 during the sliding process relative to the base 210.
[0039] It should be noted that the embodiment of the present application does not limit the specific number of the limiting parts 214. For example, when the limiting part 214 is set as the above-mentioned rod or columnar structure, the limiting part 214 can be set to two, four or six, etc., and are evenly arranged on both sides of the installation space 212. For another example, when the limiting part 214 is set as the above-mentioned block structure, the limiting part 214 can be set to two, and are respectively arranged on both sides of the installation space 212. It can be understood that in other embodiments, the limiting part 214 can also be a combination of the above-mentioned rod or columnar structure and the block structure. For example, the limiting part 214 of the above-mentioned rod or columnar structure can be set on one side of the installation space 212, and the limiting part 214 of the above-mentioned block structure can be set on the other side of the installation space 212. The specific setting can be based on actual conditions and is not limited here.
[0040] Please also see Figure 2 and Figure 3 In this embodiment, the film pressing member 220 may include a main body 221 and a scraper blade 222. The main body 221 may be slidably embedded in the slide groove 213. The scraper blade 222 may be arranged on the main body 221 and arranged toward the installation space 212. When the main body 221 slides in the slide groove 213, the scraper blade 222 may be driven to sweep across the area where the installation space 212 is located to realize the film application and exhaust operations.
[0041] Furthermore, the main body 221 can be detachably connected to the slide groove 213. When one of the film pressing member 220 or the base 210 is damaged, the user can remove the film pressing member 220 from the base 210 and replace the damaged component, which can reduce the user's usage cost.
[0042] The embodiment of the present application does not limit the specific material of the scraper blade 222. For example, it can be made of flexible materials such as sponge and rubber, so as to prevent the scraper blade 222 from damaging the protective film 10 during the process of film application and exhaust.
[0043] Furthermore, in one embodiment, the length of the scraper blade 222 can be configured to be greater than the width of the installation space 212, so that the scraper blade 222 can be more fully ventilated. Furthermore, the end of the scraper blade 222 can be set to an arc shape, so that the scraper blade 222 can be more fully applied. Specifically, the screen edge of an existing electronic device is usually designed to have an arc edge. Therefore, the structure of the scraper blade 222 can be more compatible with the structure of the screen edge of the electronic device, and the protective film 10 can be more tightly attached to the electronic device during the film application process of the scraper blade 222.
[0044] Please also see Figure 1 and Figure 4 , the protective film 10 may include a positioning layer 110, a protective layer 120, a release layer 130, and a pull tape 140 arranged on the release layer 130, which are stacked in sequence. Among them, the positioning layer 110, the protective layer 120 and the release layer 130 can be bonded by an adhesive, for example, AB glue can be used, so that the release layer 130 and the positioning layer 110 can be easily torn off from the protective layer 120. It should be noted that the embodiment of the present application does not limit the specific structure of the protective film 10. The user can set it according to the specific structure of the electronic device to be filmed. For details, please refer to the description of the installation space 212 mentioned above, which will not be repeated here. For the convenience of description, the protective film 10 is a sheet structure with a projected rectangle as an example for description.
[0045] In this embodiment, the positioning layer 110 may include a first film layer 111 and a second film layer 112. Both the first film layer 111 and the second film layer 112 may be provided with a first positioning member 113 so that both the first film layer 111 and the second film layer 112 can be fixed to the base 210 to facilitate the accuracy of subsequent film pasting.
[0046] The first film layer 111 can cover a portion of the surface of the protective layer 120, the second film layer 112 can cover at least a portion of the remaining surface of the protective layer 120, and the first positioning member 113 can be arranged in the area where the first film layer 111 extends out of the protective layer 120 and the area where the second film layer 112 extends out of the protective layer 120.
[0047] In this embodiment, the positioning layer 110 is set in the form of a first film layer 111 and a second film layer 112, which can facilitate the user to tear off the first film layer 111 and the second film layer 112 respectively after completing the film sticking and venting operations. Specifically, when the user needs to tear off the first film layer 111, it is only necessary to slide the film pressing piece 220 over the junction of the first film layer 111 and the second film layer 112, and slide the film pressing piece 220 to the surface of the second film layer 112, and the first film layer 111 can be torn off. When the user needs to tear off the second film layer 112, it is only necessary to slide the film pressing piece 220 over the junction of the first film layer 111 and the second film layer 112, and slide the film pressing piece 220 to the surface of the first film layer 111, and the second film layer 112 can be torn off. The structure of the positioning layer 110 provided in the embodiment of the present application can facilitate the user to tear off the positioning layer 110 after completing the film sticking and venting.
[0048] Further, in one embodiment, the first film layer 111 may include a first covering portion 1112 and a first extending portion 1113 connected to each other, the first covering portion 1112 may cover a portion of the surface of the protective layer 120, and the first extending portion 1113 may extend out of the protective layer 120. Similarly, the second film layer 112 may include a second covering portion 1121 and a second extending portion 1122 connected to each other, the second covering portion 1121 may cover at least a portion of the remaining surface of the protective layer 120, and the second extending portion 1122 may extend out of the protective layer 120.
[0049] In this embodiment, the first covering portion 1112 and the second covering portion 1121 can be arranged adjacent to each other, which can reduce the moving length of the film pressing member 220 when the user pushes the film pressing member 220 after the film is applied and the exhaust is completed, thereby making it easier for the user to tear the positioning layer 110 off the protective layer 120. In addition, the extending directions of the first extending portion 1113 and the second extending portion 1122 can be opposite, so that the entire positioning layer 110 can be arranged in a substantially strip shape, which is convenient for the production and transportation of the positioning layer 110.
[0050] In one embodiment, the portion of the first film layer 111 extending out of the protective layer 120, that is, the first extension portion 1113, may be provided with a groove 1111, and the drawstring 140 may extend from the groove 1111, so that it is convenient for the user to pull out the drawstring 140 and drive the release layer 130 to separate from the protective layer 120, thereby facilitating the user to attach the protective layer 120 to the electronic device. In addition, the provision of the groove 1111 may also reduce the length of the drawstring 140, thereby reducing the size of the entire protective film 10. It is understandable that during the transportation of the protective film 10, the protective film 10 will be impacted from all directions, and since the thickness of the protective film 10 is relatively small, if the length or width of the protective film 10 is too large, the impact resistance of the protective film 10 will be reduced, thereby easily causing the protective film 10 to be damaged during transportation. In other embodiments, the groove 1111 may also be provided on the second extension portion 1122, in which case the pulling direction of the drawstring 140 is opposite to the pulling direction in the above-mentioned embodiment.
[0051] Furthermore, the positioning layer 110 may further include a tearing portion 114, which may be used to assist the user in tearing off the positioning layer 110 more conveniently. The embodiment of the present application does not limit the specific position of the tearing portion 114. For example, in one embodiment, the tearing portion 114 may be provided on the first film layer 111, so that it is convenient for the user to tear off the first film layer 111. For example, in another embodiment, the tearing portion 114 may be provided on the second film layer 112, so that it is convenient for the user to tear off the second film layer 112. For example, in another embodiment In this embodiment, both the first film layer 111 and the second film layer 112 can be provided with a tearing portion 114. For the convenience of distinction, in this embodiment, the tearing portion 114 can include a first tearing portion 1114 and a second tearing portion 1142, wherein the first tearing portion 1114 can be provided on the first film layer 111 and close to the end of the first film layer 111, so that the user can tear off the first film layer 111, and the second tearing portion 1142 can be provided on the second film layer 112 and close to the end of the second film layer 112, so that the user can also tear off the second film layer 112.
[0052] It should be noted that the embodiment of the present application does not limit the specific structure of the tear-off portion. For example, it can be a sheet-like structure extending along the width direction of the positioning layer 110, or it can be other structures preferred by the user, etc., which are not limited here. At the same time, the embodiment of the present application does not limit the specific extension direction of the tear-off portion. For example, in one embodiment, the first tear-off portion 1114 and the second tear-off portion 1142 can be located on opposite sides of the protective layer 120. Specifically, when the user installs the protective film 10 on the base 210 and faces the installation space 212, one of the first tear-off portion 1114 and the second tear-off portion 1142 is located on the right side of the user, which is more ergonomic and convenient for the user to tear off the positioning layer 110.
[0053] The protective film 10 provided in the embodiment of the present application is configured as the first film layer 111 and the second film layer 112 by setting the positioning layer 110, and the first film layer 111 is configured to cover part of the surface of the protective film 10, and the second film layer 112 is configured to cover at least part of the remaining surface of the protective film 10. After the user uses the film pressing member 220 to complete the exhaust, the user only needs to push the film pressing member 220 through the junction of the first film layer 111 and the second film layer 112 to perform the film tearing operation on the first film layer 111 or the second film layer 112. The protective film 10 provided in the embodiment of the present application can simplify the film tearing operation of the user. When the protective film 10 provided in the embodiment of the present application is applied to the film sticking device 1, the film sticking device 1 can also have the effect of simplifying the film tearing operation of the user.
[0054] In this utility model, unless otherwise clearly specified or limited, the terms "installation", "connection" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, or a transmission connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0055] In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as specific or special structures. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the present utility model, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present utility model and the features of different embodiments or examples without contradiction.
[0056] The above implementation modes are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned implementation modes, a person skilled in the art should understand that the technical solutions described in the aforementioned implementation modes can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various implementation modes of the present invention, and should all be included in the protection scope of the present invention.
Claims
1. A protective film, characterized in that: It includes a positioning layer, a protective layer, a release layer, and a draw tape arranged on the release layer, the positioning layer includes a first film layer and a second film layer, the first film layer and the second film layer are both provided with a first positioning piece, the first film layer covers a part of the surface of the protective layer, and the second film layer covers at least a part of the remaining surface of the protective layer.
2. The protective film according to claim 1, characterized in that: The first film layer comprises a first covering portion and a first extending portion connected to each other, the first covering portion covers the partial surface, and the first extending portion extends out of the protective layer; The second film layer includes a second covering portion and a second extending portion which are connected to each other, the second covering portion covers the at least partial area, and the second extending portion extends out of the protective layer.
3. The protective film according to claim 2, characterized in that: The first covering portion and the second covering portion are disposed adjacent to each other, and the first extending portion and the second extending portion extend in opposite directions.
4. The protective film according to claim 2, characterized in that: The first protruding portion or the second protruding portion is provided with a drawing groove, and the drawing belt extends from the drawing groove.
5. The protective film according to any one of claims 1 to 4, characterized in that: The positioning layer further includes a tearing portion, which is arranged on the first film layer and / or the second film layer, and extends out of the protective layer.
6. The protective film according to claim 5, characterized in that: The tearing portion includes a first tearing portion and a second tearing portion. The first tearing portion is arranged on the first film layer and close to an end of the first film layer. The second tearing portion is arranged on the second film layer and close to an end of the second film layer.
7. The protective film according to claim 6, characterized in that: The first tear-off portion and the second tear-off portion are respectively located on two opposite sides of the protective layer.
8. A film sticking device, characterized in that: include: A film sticking assembly and a protective film as claimed in any one of claims 1 to 7; The film sticking assembly comprises a base and a film pressing member, the base is provided with a second positioning member and an installation space for installing the electronic device, and the film pressing member is slidably arranged on the base; The first positioning member of the protective film can be detachably connected to the second positioning member.
9. The film sticking device according to claim 8, characterized in that: The base is provided with a slide groove, and the film pressing member comprises a body and a scraping and wiping piece. The body can be slidably embedded in the slide groove, and the scraping and wiping piece is arranged on the body and faces the installation space.
10. The film sticking device according to claim 9, characterized in that: The end of the scraper blade is configured to be arc-shaped; and / or the scraper blade is made of a flexible material.
11. The film sticking device according to claim 8, characterized in that: The base is provided with a limiting portion, and the limiting portion is used to limit the sliding track of the film pressing member.
12. The film sticking device according to claim 11, characterized in that: The limiting portion is located at one side of the installation space, and a height of the limiting portion protruding from the base is greater than a height of a surface of the pressing member close to the base protruding from the base.