Protective components and their preparation methods, molding dies, foldable terminals

Abstract

This application provides a protective component and its manufacturing method, molding die, and foldable terminal. The protective component has high structural strength, effectively protecting the display screen and improving the user experience of the foldable terminal. In the protective component, the protective part of the protective body has a first fixing groove, the opening of which is located on the inner surface of the protective part. The first fixing groove has a first groove wall and a second groove wall, the first groove wall being opposite to the opening of the first fixing groove, and the second groove wall being connected to the first groove wall. A connecting part is connected to the protective part and is spaced apart from and opposite to the second groove wall. The connecting part has a second fixing groove communicating with the first fixing groove, the opening of which is located on the bottom surface of the connecting part. A reinforcing part is provided on the first groove wall and connected to the second groove wall. A decorative film is installed on the bottom surface of the connecting part. A fixing body is provided in the first and second fixing grooves, covers the reinforcing part, and connects the protective body and the decorative film.

Description

Technical Field

[0001] This application relates to the field of foldable terminal technology, and in particular to a protective component and its preparation method, molding die, and foldable terminal. Background Technology

[0002] With the advancement of technology, the era of large-screen smart terminals has arrived, and foldable terminals are favored by users for their advantages such as large screens and portability. However, during the use of foldable terminals, the large display screen is often susceptible to damage from collisions with external objects. Currently, foldable terminals often use protective components to protect the display screen. However, the strength of existing protective components is insufficient, making them prone to deformation under external forces, which can crush the display screen and affect the reliability of the folding mechanism. Summary of the Invention

[0003] This application provides a protective component and its preparation method, a molding die, and a foldable terminal. The protective component has high structural strength, can effectively protect the display screen, and improve the user experience of the foldable terminal.

[0004] In one aspect, this application provides a protective component, including a protective body, a decorative film, and a fixing body.

[0005] The protective body includes a protective portion, a connecting portion, and a reinforcing portion. The protective portion has a first fixing groove, the opening of which is located on the inner surface of the protective portion. The first fixing groove has a first groove wall and a second groove wall, the first groove wall being opposite to the opening of the first fixing groove, and the second groove wall being connected to the first groove wall and located on the bottom side of the first groove wall. The connecting portion is connected to the protective portion and is spaced apart from and opposite to the second groove wall. The connecting portion has a second fixing groove communicating with the first fixing groove, the opening of which is located on the bottom surface of the connecting portion. The reinforcing portion is located on the first groove wall and connected to the second groove wall. The protective portion may be made of a metal material.

[0006] The decorative film is installed on the bottom surface of the connecting portion. The fixing body is disposed in the first fixing groove and the second fixing groove, covers the reinforcing portion, and connects the protective body and the decorative film. The fixing body may be made of plastic material.

[0007] In the protective component described in this application, the reinforcing part is added to the protective body, and the reinforcing part is combined with the fixing body to increase the overall strength of the protective component. When the protective component is used in a foldable terminal, the protective component can effectively protect the display screen and improve the user experience of the foldable terminal.

[0008] In one embodiment, the reinforcing portion includes a reinforcing surface facing away from the first groove wall surface. Along the direction from the connecting portion towards the second groove wall surface, the distance between the reinforcing surface and the first groove wall surface gradually increases, and the fixing body covers the reinforcing surface. The reinforcing surface may be an inclined surface.

[0009] In the protective component described in this application, the reinforcing portion is added to the protective body, and the reinforcing surface of the reinforcing portion is combined with the fixing body, which increases the overall strength of the protective component. When the protective component is used in a foldable terminal, it can effectively protect the display screen and improve the user experience of the foldable terminal. Moreover, during the molding process of the protective body, the design of the reinforcing surface on the reinforcing portion facilitates the demolding of the protective body.

[0010] In one embodiment, the second fixing groove has a third groove wall surface, which is disposed opposite to the opening of the second fixing groove. The protective body further includes a snap-fit ​​portion disposed on the third groove wall surface. The fixing body covers the snap-fit ​​portion.

[0011] The design of the snap-fit ​​portion on the protective body allows the fixing body and the protective body to form an inverted snap structure, which can enhance the bonding strength between the fixing body and the protective body and further improve the overall strength of the protective component.

[0012] In one embodiment, the snap-fit ​​portion includes a first side and a second side, the first side facing the first fixing groove, and the second side facing away from the first side. Along the direction from the connecting portion towards the wall of the second groove, the distance between the first side and the second side and the wall of the first groove gradually increases. That is, the inclination direction of the first side and the second side is the same as the inclination direction of the reinforcing surface, to avoid the snap-fit ​​portion affecting the demolding of the protective body.

[0013] In one embodiment, the decorative film has a mating hole that penetrates the decorative film along its thickness direction and is disposed opposite to the second fixing groove. The fixing body also passes through the mating hole to increase the contact area between the fixing body and the decorative film, thereby improving the bonding stability between the fixing body and the decorative film.

[0014] In one embodiment, the decorative film includes an assembly part, a first decorative part, and a second decorative part. The assembly part is mounted on the bottom surface of the connecting part and is provided with the mating hole. The first decorative part and the second decorative part are respectively connected to opposite sides of the assembly part and are respectively located on opposite sides of the connecting part.

[0015] In one embodiment, the protective component further includes a connecting layer, which connects the connecting portion and the decorative film to mount the decorative film onto the connecting portion. The connecting layer has a through hole that penetrates the connecting layer along its thickness direction and is disposed opposite to the second fixing groove. The fixing body also passes through the through hole to increase the contact area between the fixing body and the connecting layer, thereby improving the bonding stability between the fixing body and the decorative film.

[0016] Secondly, this application provides a foldable terminal, including a first housing, a second housing, a foldable mechanism, a display screen, and any of the aforementioned protective components, wherein the foldable mechanism is connected between the first housing and the second housing.

[0017] The display screen includes a first display portion, a second display portion, and a foldable portion. The first display portion is mounted on the first housing, the second display portion is mounted on the second housing, and the foldable portion is disposed opposite to the foldable mechanism and is spaced apart from the edge of the first housing and the edge of the second housing to form a first gap.

[0018] The protective part is installed on the foldable mechanism, and the decorative film is located between the connecting part and the foldable part, and blocks at least part of the first gap to prevent external moisture or dust and other impurities from entering the interior of the foldable terminal through the first gap, thereby ensuring the airtightness of the foldable terminal.

[0019] In the foldable terminal described in this application, the protective component has high overall strength. When the foldable terminal is dropped during use, due to the high overall strength of the protective component, it will not deform and crush the display screen, thus effectively protecting the display screen and improving the user experience of the foldable terminal.

[0020] In one embodiment, the first gap includes a first sub-gap and a second sub-gap, which are located at opposite ends of the foldable portion along its length.

[0021] There are two protective components, namely a first protective component and a second protective component. Along the length of the foldable mechanism, the first protective component and the second protective component are respectively installed on opposite sides of the foldable mechanism. The decorative film of the first protective component covers at least part of the first sub-gap, and the decorative film of the second protective component covers at least part of the second sub-gap, to prevent external moisture or dust and other impurities from entering the interior of the foldable terminal through the first sub-gap and the second sub-gap, thus ensuring the airtightness of the foldable terminal.

[0022] In one embodiment, the first display portion is spaced apart from the frame of the first housing to form a second gap, and the second display portion is spaced apart from the frame of the second housing to form a third gap.

[0023] The foldable terminal further includes a first decorative element and a second decorative element. The first decorative element is installed on the first housing and covers at least part of the second gap. The second decorative element is installed on the second housing and covers at least part of the third gap, so as to prevent external moisture or dust and other impurities from entering the interior of the foldable terminal through the second gap and the third gap, thereby ensuring the airtightness of the foldable terminal.

[0024] In one embodiment, at least a portion of the first decorative element is stacked with the decorative film along the thickness direction of the foldable terminal, and / or at least a portion of the second decorative element is stacked with the decorative film, so as to ensure that the first decorative element, the second decorative element and the protective element can completely cover the first gap, the second gap and the third gap, thereby ensuring the airtightness of the foldable terminal.

[0025] Thirdly, this application provides a method for preparing a protective component, used to prepare any of the protective components described above, comprising:

[0026] A protective body is provided, comprising a protective part, a connecting part, and a reinforcing part. The protective part has a first fixing groove, the opening of which is located on the inner surface of the protective part. The first fixing groove has a first groove wall and a second groove wall. The first groove wall is disposed opposite to the opening of the first fixing groove, and the second groove wall is connected to the first groove wall. The connecting part is connected to the protective part and is spaced apart from and opposite to the second groove wall. The connecting part has a second fixing groove communicating with the first fixing groove, the opening of which is located on the bottom surface of the connecting part. The reinforcing part is disposed on the first groove wall and connected to the second groove wall.

[0027] The decorative film is installed on the bottom surface of the connecting part;

[0028] A fixing body is formed, which is disposed in the first fixing groove and the second fixing groove, covers the reinforcing part, and connects the protective body and the decorative film.

[0029] The protective component prepared by the method described in this application has an added reinforcing part on the protective body, and the reinforcing part is combined with the fixing body to increase the overall strength of the protective component. When the protective component is used in a foldable terminal, it can effectively protect the display screen and improve the user experience of the foldable terminal.

[0030] In one embodiment, the step of providing a protective body includes:

[0031] The protective body is formed within the cavity of a molding die, wherein the molding die includes a first die and a second die, the first die and the second die being joined together to form the cavity, the second die including a die shell and a demolding mechanism, the demolding mechanism being located inside the die shell, the demolding mechanism including a push rod, a first inclined push base, a second inclined push base and an inclined push, the first inclined push base being connected to one end of the push rod, the first inclined push base including a first inclined surface away from the push rod, the second inclined push base being located on the side of the first inclined push base away from the push rod, the second inclined push base including a second inclined surface facing the first inclined push base, the second inclined surface being in contact with the first inclined surface, the inclined push being rotatably connected to the end of the second inclined push base away from the first inclined push base, the end of the inclined push away from the second inclined push base abutting against the protective body;

[0032] The protective body is ejected from the cavity using the demolding mechanism. Specifically, a force is applied to the ejector rod toward the first inclined ejector base, which pushes the first inclined ejector base toward the second inclined ejector base. The second inclined ejector base moves along a first direction under the push of the first inclined ejector base, and the inclined ejector moves along a second direction under the push of the second inclined ejector base. The inclined ejector can then eject along the reinforcing surface, and the protective body is demolded from the cavity.

[0033] Fourthly, this application provides a molding die, including a first die and a second die. The first die and the second die are mated together and enclose a cavity. The second die includes a die shell and a demolding mechanism, the demolding mechanism being disposed inside the die shell. The demolding mechanism includes a push rod, a first inclined push base, a second inclined push base, and an inclined push. The first inclined push base is connected to one end of the push rod, and the first inclined push base includes a first inclined surface facing away from the push rod. The second inclined push base is located on the side of the first inclined push base facing away from the push rod, and the second inclined push base includes a second inclined surface facing the first inclined push base. The second inclined surface is in contact with the first inclined surface. The inclined push is rotatably connected to the end of the second inclined push base facing away from the first inclined push base, and the end of the inclined push facing away from the second inclined push base is used to abut against the protective body. The first inclined surface and the second inclined surface have the same inclination direction as the reinforcing surface.

[0034] After the protective body is formed using the molding die, the inclined ejector abuts against the reinforcing surface. During the demolding process of the protective body, a force is first applied to the ejector rod towards the first inclined ejector base. The ejector rod pushes the first inclined ejector base towards the second inclined ejector base. The second inclined ejector base moves along a first direction under the push of the first inclined ejector base, and the inclined ejector moves along a second direction under the push of the second inclined ejector base. The inclined ejector can then be ejected along the reinforcing surface, thereby achieving demolding of the protective body. The first and second directions have the same inclination direction; for example, both the first and second directions are simultaneously upward and to the right.

[0035] In the foldable terminal described in this application, the reinforcing part is added to the protective body, and the reinforcing surface of the reinforcing part is combined with the fixing body to increase the overall strength of the protective component. When the foldable terminal is dropped during use, due to the high overall strength of the protective component, the protective component will not deform and crush the display screen, thus effectively protecting the display screen and improving the user experience of the foldable terminal. Attached Figure Description

[0036] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be described below.

[0037] Figure 1 This is a schematic diagram of the foldable terminal provided in this application embodiment in a folded state;

[0038] Figure 2 This is a schematic diagram of the foldable terminal provided in this application embodiment in its unfolded state;

[0039] Figure 3 yes Figure 2 The exploded view of the foldable terminal shown.

[0040] Figure 4 yes Figure 3 A partial structural schematic diagram of the folding mechanism of the foldable device in the foldable terminal shown.

[0041] Figure 5a yes Figure 3 A schematic diagram of the structure of the first protective component in the protective assembly of the foldable terminal shown.

[0042] Figure 5b yes Figure 5a The diagram shows the structure of the first protective component at the second angle.

[0043] Figure 5c yes Figure 5aThe diagram shows the structure of the first protective component at the third angle.

[0044] Figure 6 yes Figure 5a The diagram shows the structure of the first protective component after it has been cut open along point II.

[0045] Figure 7a yes Figure 5a A schematic diagram of the structure of the protective body in the first protective component is shown;

[0046] Figure 7b yes Figure 7a A schematic diagram of the protective structure shown from another angle;

[0047] Figure 8 yes Figure 7a A schematic diagram of the cross-sectional structure of the protective body after it is cut along point II-II.

[0048] Figure 9 yes Figure 5a The diagram shows the structure of the decorative film and adhesive layer in the first protective component.

[0049] Figure 10 yes Figure 3 A schematic diagram of the assembly structure of the first protective component and the foldable mechanism in the foldable terminal shown.

[0050] Figure 11 yes Figure 10 A schematic diagram of the cross-sectional structure of the assembly structure shown after being cut along point III-III;

[0051] Figure 12 This is a cross-sectional structural diagram of a molding die provided in this application;

[0052] Figure 13 yes Figure 12 The diagram shows a demolding mechanism in the molded die used to demold the protective body.

[0053] Figure 14 This is a process flow diagram of a method for preparing a protective component provided in this application;

[0054] Figure 15 yes Figure 14 A schematic diagram of the structure in which the decorative film is installed on the protective body in the preparation method of the protective component shown;

[0055] Figure 16 yes Figure 15 The diagram shows a cross-sectional view of the structure after it is cut along line IV-IV. Detailed Implementation

[0056] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0057] Please see Figure 1 , Figure 1 This is a schematic diagram of the foldable terminal 1000 provided in this application embodiment in a folded state. Figure 2 This is a schematic diagram of the foldable terminal 1000 provided in this application embodiment in its unfolded state.

[0058] The foldable terminal 1000 can be a foldable terminal such as a mobile phone, tablet computer, personal computer, multimedia player, e-book reader, laptop computer, in-vehicle device, or wearable device. In this embodiment, the foldable terminal 1000 is a foldable mobile phone. That is, the foldable terminal 1000 is a mobile phone that can switch between a folded state and an unfolded state.

[0059] For ease of description, the following definitions are provided. Figure 1 The foldable terminal 1000 shown has its width direction along the X-axis, its length direction along the Y-axis, and its thickness direction along the Z-axis. The X, Y, and Z axes are mutually perpendicular. For example, the rotation axis of the foldable terminal 1000 extends parallel to the X-axis. That is, the foldable terminal 1000 can be relatively unfolded or folded around the X-axis.

[0060] It should be noted that the terms "parallel" and "perpendicular" used in the embodiments of this application to describe relative positional relationships are relative to the current technological level, and not absolute or strict definitions in a mathematical sense. Slight deviations are permissible; approximations of parallelism and perpendicularity are acceptable. For example, "A and B are parallel" means that A and B are parallel or approximately parallel, and the angle between A and B can be between 0 and 10 degrees. Similarly, "A and B are perpendicular" means that A and B are perpendicular or approximately perpendicular, and the angle between A and B can be between 80 and 100 degrees.

[0061] like Figure 1 As shown, when the foldable terminal 1000 is in the folded state, its size along the Y-axis is small, making it easy to carry. Figure 2 As shown, when the foldable terminal 1000 is in the unfolded state, its dimension along the Y-axis is relatively large, resulting in a large display area. For example, Figure 1 The unfolding angle of the foldable terminal 1000 shown is 180 degrees. In other words, Figure 2 The foldable terminal 1000 shown is in a flattened state.

[0062] It should be noted that slight deviations are allowed in the angles illustrated in the embodiments of this application. For example, Figure 2The unfolding angle of the foldable terminal 1000 shown is 180 degrees, meaning that the unfolding angle can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees. The angles illustrated in the following text can be understood in the same way.

[0063] It should be understood that the foldable terminal 1000 shown in this embodiment is a terminal capable of being folded once. In some other embodiments, the foldable terminal 1000 may also be a terminal capable of being folded multiple times (more than twice). In this case, the foldable terminal 1000 may include multiple parts, and two adjacent parts may be folded relatively close together until the foldable terminal 1000 is in a folded state, and two adjacent parts may also be unfolded relatively away from each other until the foldable terminal 1000 is in an unfolded state.

[0064] Please refer to the following: Figure 3 , Figure 3 yes Figure 2 The exploded structural diagram of the foldable terminal 1000 is shown.

[0065] The foldable terminal 1000 includes a foldable device 100, a display screen 200, a decorative component 300, and a protective component 400, all of which are mounted on the foldable device 100. The foldable device 100 includes a first housing 110, a second housing 120, and a folding mechanism 130. The first housing 110 and the second housing 120 are spaced apart. The folding mechanism 130 connects the first housing 110 and the second housing 120 to achieve a rotatable connection between them. The first housing 110 includes a frame 111, the second housing 120 includes a frame 121, and the folding mechanism 130 includes a shaft cover 131.

[0066] It should be noted that, Figure 3 Only a partial structure of the foldable device 100 is shown. For example, the first housing 110 may also include a middle plate, the second housing 120 may also include a middle plate, and the foldable mechanism 130 may also include a foldable component. The structures not shown in the foldable device 100 can be referred to the relevant structures of existing foldable devices, and will not be described in detail here.

[0067] The first housing 110 and the second housing 120 can rotate relative to each other via the folding mechanism 130, allowing the foldable device 100 to switch between a folded state and an unfolded state. Specifically, the first housing 110 and the second housing 120 can rotate relative to each other to be positioned opposite each other, so that the foldable device 100 is in a folded state, such as... Figure 1As shown. At this time, the first housing 110 and the second housing 120 are spaced apart and opposite to each other, and the foldable mechanism 130 is in a folded state. The first housing 110 and the second housing 120 can also be rotated relative to each other to unfold, so that the foldable terminal 1000 is in an unfolded state, as shown. Figure 2 As shown. At this time, the included angle between the first housing 110 and the second housing 120 can be 180 degrees, and the foldable mechanism 130 is in the unfolded state.

[0068] It should be noted that the "relative arrangement of the two" mentioned in the description of the foldable terminal 1000 in this application means that one is projected onto the other and at least partially covers the other. Similar descriptions in the following text can be understood in the same way.

[0069] Please refer to the following: Figure 4 , Figure 4 yes Figure 3 A partial structural schematic diagram of the folding mechanism 130 of the foldable device 100 in the foldable terminal 1000 is shown. Wherein, Figure 3 and Figure 4 Only a partial structure of the shaft cover 131 is shown.

[0070] The shaft cover 131 is provided with a mounting groove 132. Along the length of the shaft cover 131 (X-axis direction in the diagram), the mounting groove 132 is located at one end of the shaft cover 131. Specifically, the opening of the mounting groove 132 is located on the top surface of the shaft cover 131. The mounting groove 132 is recessed from the top surface of the shaft cover 131 towards the bottom surface (negative Z-axis direction in the diagram). There are two mounting grooves 132, namely a first mounting groove 132a and a second mounting groove 132b, located at opposite ends of the shaft cover 131 along its length.

[0071] It should be noted that the directional terms such as "top" and "bottom" used in the description of the foldable terminal 1000 in this application are mainly based on the foldable terminal 1000 as shown in the attached document. Figure 2 The orientation of the display is described in the text, with the positive direction of the Z-axis as "top" and the negative direction of the Z-axis as "bottom". This does not limit the orientation of the foldable terminal 1000 in actual application scenarios.

[0072] The display screen 200 includes a display surface (not shown) facing away from the foldable device 100, which is used to display information such as text, images, or videos. In this embodiment, the display screen 200 includes a first display portion 210, a second display portion 220, and a foldable portion 230, which is connected between the first display portion 210 and the second display portion 220. The foldable portion 230 is bendable about the X-axis.

[0073] Specifically, the first display portion 210 is mounted on the first housing 110 and forms a second gap (not shown) with the frame 111 of the first housing 110 at a distance. The second display portion 220 is mounted on the second housing 120 and forms a third gap (not shown) with the frame 121 of the second housing 120 at a distance. The foldable portion 230 is disposed opposite to the foldable mechanism 130 and forms a first gap (not shown) between itself and the frame 111 of the first housing 110 and the frame 121 of the second housing 120. The first gap includes a first sub-gap (not shown) and a second sub-gap (not shown). Along the length direction of the foldable portion 230 (the X-axis direction in the figure), the first sub-gap and the second sub-gap are disposed opposite to each other and both connect the second gap and the third gap.

[0074] like Figure 1 As shown, when the foldable terminal 1000 is in the folded state, both the foldable device 100 and the display screen 200 are folded, the first display portion 210 and the second display portion 220 are arranged opposite to each other, and the foldable portion 230 is bent. At this time, the exposed area of ​​the display screen 200 is relatively small, which can greatly reduce the probability of the display screen 200 being damaged and achieve effective protection for the display screen 200.

[0075] like Figure 2 As shown, when the foldable terminal 1000 is in a flattened state, both the foldable device 100 and the display screen 200 are flattened, with the first display portion 210 and the second display portion 220 relatively flattened, and the foldable portion 230 flattened without bending. At this time, the angles between the first display portion 210 and the second display portion 220, the angle between the first display portion 210 and the foldable portion 230, and the angle between the second display portion 220 and the foldable portion 230 are all 180 degrees. The display screen 200 has a large display area, enabling the foldable terminal 1000 to display a large screen and improving the user experience.

[0076] It should be noted that in this embodiment, the foldable terminal 1000 is a small foldable phone. When the foldable terminal 1000 is in the unfolded state, its planar dimensions are approximately the same as those of a candybar phone. When the foldable terminal 1000 is in the folded state, its planar dimensions are approximately half the planar dimensions of a candybar phone. In some other embodiments, the foldable terminal 1000 may also be a large foldable phone, in which case its planar dimensions are approximately twice the planar dimensions of a candybar phone when unfolded, and when folded, its planar dimensions are the same as those of a candybar phone.

[0077] It should be understood that the foldable terminal 1000 shown in the embodiments of the present application is folded in an inward folding manner. When the foldable terminal 1000 is in the folded state, the display screen 200 is located inside the foldable device 100. In some other embodiments, the foldable terminal 1000 may also be folded in an outward folding manner. When the foldable terminal 1000 is in the folded state, the display screen 200 is located outside the foldable device 100.

[0078] The decoration component 300 is installed on the first housing 110 and the second housing 120, and covers the second gap, the third gap and at least part of the first gap. In this embodiment, the decoration component 300 includes a first decoration piece 310 and a second decoration piece 320. The first decoration piece 310 is installed on the first housing 110, surrounds the first display part 210, and covers at least part of the second gap and at least part of the first gap. The second decoration piece 320 is installed on the second housing 120, surrounds the second display part 220, and covers at least part of the third gap and at least part of the first gap. Among them, the first decoration piece 310 and the second decoration piece 320 are arranged at intervals and opposite to each other. Exemplarily, both the first decoration piece 310 and the second decoration piece 320 are in a "C" shape, and the openings of the first decoration piece 310 and the second decoration piece 320 both face the folding mechanism 130.

[0079] It can be understood that the decoration component 300 can play a role in blocking, preventing external moisture, dust and other impurities from entering the interior of the foldable terminal 1000 through the second gap, the third gap and the first gap, and improving the use reliability of the foldable terminal 1000.

[0080] The protection component 400 is installed on the folding mechanism 130 and covers at least part of the first gap. In this embodiment, the protection component 400 and the decoration component 300 jointly cover the first gap. In some other embodiments, the decoration component 300 may not cover the first gap, and only the protection component 400 covers the first gap. Or, the decoration component 300 may not completely cover the second gap and the third gap, and the protection component 400 not only covers the first gap, but also jointly covers the second gap and the third gap with the decoration component 300. The present application does not make specific limitations on this.

[0081] In this embodiment, the protective component 400 includes a protective member 410, which is mounted on the foldable mechanism 130. There are two protective members 410: a first protective member 410a and a second protective member 410b. Along the length direction of the foldable mechanism 130 (the X-axis direction in the figure), the first protective member 410a and the second protective member 410b are respectively mounted at opposite ends of the foldable mechanism 130. Specifically, the protective member 410 is mounted in the mounting groove 132 of the shaft cover 131. The first protective member 410a is mounted in the first mounting groove 132a of the shaft cover 131 and covers at least a portion of the first sub-gap. The second protective member 410b is mounted in the second mounting groove 132b of the shaft cover 131 and covers at least a portion of the second sub-gap.

[0082] It should be noted that the first protective member 410a and the second protective member 410b have completely identical structures. The structure of the protective member 410 will be described in detail below using the first protective member 410a as an example. It should be understood that the structure of the second protective member 410b may also be partially the same as or different from that of the first protective member 410a; this application does not impose specific limitations in this regard.

[0083] Please see Figures 5a to 6 , Figure 5a yes Figure 3 The diagram shows the structure of the first protective member 410a of the protective assembly 400 in the foldable terminal 1000. Figure 5b yes Figure 5a The diagram shown is a structural schematic of the first protective component 410a at the second angle. Figure 5c yes Figure 5a The diagram shown is a structural schematic of the first protective component 410a at the third angle. Figure 6 yes Figure 5a The diagram shows the structure of the first protective component 410a after being cut along point II. Here, "cut along point II" means cutting along the plane containing line II; similar descriptions in the following text can be understood in the same way.

[0084] The protective component 410 includes a protective body 10, a decorative film 20, and a fixing body 30. The decorative film 20 is installed on the protective body 10, and the fixing body 30 is connected to the protective body 10 and the decorative film 20 to enhance the assembly stability between the protective body 10 and the decorative film 20.

[0085] Please see Figures 7a to 8 , Figure 7a yes Figure 5a The diagram shows the structure of the protective body 10 in the first protective component 410a. Figure 7b yes Figure 7a The diagram shows the structure of the protective body 10 from another angle. Figure 8 yes Figure 7aA schematic diagram of the cross-sectional structure of the protective body 10 after being cut along II-II.

[0086] The protective body 10 includes a protective portion 11 and a connecting portion 12. The connecting portion 12 is connected to the top end of the protective portion 11 and protrudes relative to the inner surface 115 of the protective portion 11. The protective portion 11 and the connecting portion 12 can be integrally formed. For example, the included angle between the protective portion 11 and the connecting portion 12 can be 90 degrees. In this case, the protective body 10 is approximately "T"-shaped, and can also be referred to as a "T-block". In this embodiment, the protective body 10 can be made of metal material to ensure that the protective body 10 has sufficient structural strength. For example, the protective body 10 can be formed by die casting, or the protective body 10 can be formed by metal injection molding (MIM).

[0087] The protective part 11 is provided with a first fixing groove 112, the opening of which is located on the inner surface 115 of the protective part 11. The first fixing groove 112 is recessed from the inner surface 115 of the protective part 11 towards the outer surface (not shown in the figure) (positive X-axis direction in the figure). The first fixing groove 112 has a first groove wall surface 113 and a second groove wall surface 114. The first groove wall surface 113 is disposed opposite to the opening of the first fixing groove 112. Along the height direction of the protective body 10 (Z-axis direction in the figure), the second groove wall surface 114 is spaced apart from and opposite to the connecting part 12, and is connected to the first groove wall surface 113.

[0088] The connecting portion 12 is provided with a second fixing groove 122, the opening of which is located on the bottom surface of the connecting portion 12 (not shown in the figure). The second fixing groove 122 is recessed from the bottom surface of the connecting portion 12 towards the top surface (not shown in the figure) (positive Z-axis direction in the figure), and communicates with the first fixing groove 112. The second fixing groove 122 has a third groove wall surface 123, which is disposed opposite to the opening of the second fixing groove 122.

[0089] It should be noted that the directional terms such as "inner" and "outer" used in the description of the protective body 10 in this application are mainly based on the protective component 410 attached to the protective body. Figure 2 The orientation of the protective component 410 is described in the diagram, with the direction facing the foldable part 230 as "inside" and the direction away from the foldable part 230 as "outside". This does not constitute a limitation on the orientation of the protective component 410 in actual application scenarios.

[0090] In addition, the protective body 10 also includes a reinforcing portion 13 and a snap-fit ​​portion 14. The reinforcing portion 13 is disposed within the first fixing groove 112. The reinforcing portion 13 is disposed on the wall surface 113 of the first groove and protrudes from the first groove wall surface 113 toward the opening of the first fixing groove 112 (positive X-axis direction in the figure), and connects to the second groove wall surface 114. Along the direction from the connecting portion 12 toward the second groove wall surface 114 (negative Z-axis direction in the figure), the thickness of the reinforcing portion 13 gradually increases. The reinforcing portion 13 includes a reinforcing surface 133 facing away from the first groove wall surface 113, and the reinforcing surface 133 connects the first groove wall surface 113 and the inner surface of the protective portion 11. Along the direction from the connecting portion 12 toward the second groove wall surface 114, the distance between the reinforcing surface 133 and the first groove wall surface 113 gradually increases. For example, the reinforcing surface 133 is an inclined surface, and the included angles between the reinforcing surface 133 and the first groove wall surface 113 and the inner surface 115 of the protective part 11 are all obtuse angles.

[0091] The engaging portion 14 is disposed in the second fixing groove 122. Specifically, the engaging portion 14 is disposed on the third groove wall 123 and protrudes from the third groove wall 123 toward the opening of the second fixing groove 122 (negative Z-axis direction in the figure), and is spaced apart from the groove side wall of the second fixing groove 122. The engaging portion 14 includes a first side surface 141 and a second side surface 142. The first side surface 141 faces the first fixing groove 112, and the second side surface 142 is disposed opposite to the first side surface 141. The first side surface 141 and the second side surface 142 have the same inclination direction as the reinforcing surface 133. Along the direction from the connecting portion 12 toward the second groove wall 114, the distance between the first side surface 141 and the second side surface 142 and the first groove wall 113 gradually increases. For example, both the first side surface 141 and the second side surface 142 are inclined surfaces, the included angle between the first side surface 141 and the third groove wall 123 is an obtuse angle, and the included angle between the second side surface 142 and the third groove wall 123 is an acute angle.

[0092] Please refer to the following: Figure 9 , Figure 9 yes Figure 5a The diagram shows the structure of the decorative film 20 and the adhesive layer 40 in the first protective component 410a.

[0093] The decorative film 20 is located on the bottom side of the connecting portion 12 and partially obscures the second fixing groove 122. The decorative film 20 has a mating hole 201 that penetrates the decorative film 20 along its thickness direction and communicates with the second fixing groove 122, and is positioned opposite to the snap-fit ​​portion 14. The decorative film 20 includes an assembly portion 21, a first decorative portion 22, and a second decorative portion 23. The assembly portion 21 has the mating hole 201. Along the length direction of the assembly portion 21 (Y-axis direction in the figure), the first decorative portion 22 and the second decorative portion 23 are respectively connected to opposite sides of the assembly portion 21 and are located on opposite sides of the connecting portion 12. The assembly portion 21, the first decorative portion 22, and the second decorative portion 23 can be integrally formed. For example, the decorative film 20 can be made of polyimide (PI).

[0094] In addition, the protective component 410 also includes an adhesive layer 40, which is located between the decorative film 20 and the connecting portion 12, and connects the decorative film 20 and the connecting portion 12. Specifically, the adhesive layer 40 is located between the assembly portion 21 and the connecting portion 12, and connects the assembly portion 21 and the connecting portion 12. The adhesive layer 40 has a through hole 401 that penetrates the adhesive layer 40 along its thickness direction, connects to the mating hole 201 and the second fixing groove 122, and is disposed opposite to the snap-fit ​​portion 14.

[0095] The fixing body 30 is disposed in the first fixing groove 112 and the second fixing groove 122, and covers the reinforcing part 13, the snap-fit ​​part 14 and the assembly part 21, and connects the protective body 10 and the decorative film 20. Specifically, the fixing body 30 fills the first fixing groove 112 and the second fixing groove 122, and passes through the mating hole 201 of the decorative film 20 and the through hole 401 of the adhesive layer 40, and covers the mating surface 133 of the reinforcing part 13, the first side surface 141 and the second side surface 142 of the snap-fit ​​part 14 and the surface of the assembly part 21 facing away from the connecting part 12, so as to ensure that the fixing body 30 has a large contact area with the protective body 10, the decorative film 20 and the adhesive layer 40, improve the bonding stability between the fixing body 30 and the protective body 10 and the decorative film 20, and thus improve the overall strength of the protective component 410.

[0096] For example, the fixing body 30 may be made of plastic. The fixing body 30 may be formed on the protective body 10 and the decorative film 20 by injection molding. It is understood that the design of the snap-fit ​​portion 14 on the protective body 10 allows the fixing body 30 and the protective body 10 to form an inverted structure, which can enhance the bonding strength between the fixing body 30 and the protective body 10.

[0097] In the protective component 410 shown in this embodiment, a reinforcing part 13 is added to the protective body 10, and the reinforcing surface 133 of the reinforcing part 13 is combined with the fixing body 30, which can increase the overall strength of the protective component 410. Moreover, since an inverted structure is formed between the fixing body 30 and the protective body 10, the bonding strength between the fixing body 30 and the protective body 10 is increased, which can further improve the overall strength of the protective component 410.

[0098] Please refer to the following: Figure 10 and Figure 11 , Figure 10 yes Figure 3 The diagram shows the assembly structure of the first protective component 410a and the foldable mechanism 130 in the foldable terminal 1000. Figure 11 yes Figure 10 The diagram shows a cross-sectional view of the assembled structure after it is cut along point III-III.

[0099] The protective body 10 is installed in the mounting groove 132 of the shaft cover 131, and the decorative film 20 is located on the top side of the foldable portion 230 and covers the first gap. Specifically, the protective part 11 of the protective body 10 is installed in the mounting groove 132, the connecting part 12 of the protective body 10 is located on the top side of the foldable portion 230 and is spaced apart from and opposite to the foldable portion 230, the mounting part 21 of the decorative film 20 is located between the connecting part 12 and the foldable portion 230, the first decorative part 22 is stacked with at least a portion of the first decorative part 310, and the second decorative part 23 is stacked with at least a portion of the second decorative part 320 to achieve complete coverage of the first gap, the second gap and the second gap, and ensure the sealing of the foldable terminal 1000.

[0100] For example, the end of the first decorative portion 22 away from the mounting portion 21 may be disposed on the bottom side of the first decorative member 310, and the end of the second decorative portion 23 away from the mounting portion 21 may be disposed on the bottom side of the second decorative member 320. It is understood that the end of the first decorative portion 22 away from the mounting portion 21 may be disposed on the top side of the first decorative member 310, and the end of the second decorative portion 23 away from the mounting portion 21 may be disposed on the top side of the second decorative member 320. In some other embodiments, the first decorative portion 22 may not be stacked with the first decorative member 310, or the second decorative portion 23 may not be stacked with the second decorative member 320.

[0101] When the foldable terminal 1000 shown in this embodiment is dropped during use, the protective component 410 will typically come into contact with the outside environment first to protect the display screen 200 and prevent it from colliding with the outside environment during the fall. Because the protective component 410, as the main load-bearing component, has high overall strength, it will not deform and compress the display screen 200, thus effectively protecting the display screen 200 and improving the user experience of the foldable terminal 1000.

[0102] Please refer to the following: Figure 12 , Figure 12 This is a cross-sectional structural diagram of a molding die 2000 provided in this application.

[0103] The molding die 2000 is used to mold the protective body 10 of the protective component 410 mentioned above. The molding die 2000 includes a first die 500 and a second die 600. The first die 500 and the second die 600 are mated together and enclose a cavity 700, which is used for die casting or metal powder injection molding of the protective body 10. The second die 600 includes a mold shell 610 and a demolding mechanism 620. The demolding mechanism 620 is located inside the mold shell 610 and is used to abut against the protective body 10 formed in the cavity 700 and remove the protective body 10 from the cavity 700 to achieve demolding of the protective body 10.

[0104] The demolding mechanism 620 includes an ejector pin 50, a first inclined ejector base 60, a second inclined ejector base 70, and an inclined ejector 80. The axial direction of the ejector pin 50 is parallel to the X-axis. Along the axial direction of the ejector pin 50, the first inclined ejector base 60 is fixed to one end of the ejector pin 50. The first inclined ejector base 60 includes a connecting surface 601 and a first inclined surface 602. The connecting surface 601 is connected to the ejector pin 50. Along the thickness direction of the first inclined ejector base 60 (X-axis direction in the figure), the first inclined surface 602 and the connecting surface 601 are arranged opposite to each other. Along the direction from the top to the bottom of the first inclined ejector base 60, the distance between the first inclined surface 602 and the connecting surface 601 gradually decreases. The second inclined ejector base 70 is located on the side of the first inclined ejector base 60 opposite to the ejector pin 50. The second inclined base 70 includes a second inclined surface 701 facing the first inclined base 60, which mates with and fits against the first inclined surface 602. An inclined top 80 is connected to the end of the second inclined base 70 facing away from the first inclined base 60 and is rotatable relative to the second inclined base 70 about the Y-axis. The end of the inclined top 80 facing away from the second inclined base 70 is used to abut against the protective body 10.

[0105] Please see Figure 13 , Figure 13 yes Figure 12 The diagram shows the structure of the demolding mechanism 620 in the molding die 2000 for demolding the protective body 10.

[0106] After the protective body 10 is formed in the cavity 700 of the molding die 2000, the inclined ejector 80 abuts against the reinforcing surface 133 of the reinforcing part 13 and the first side surface 141 and the second side surface 142 of the snap-fit ​​part 14. During the demolding process of the protective body 10, a force F along the negative X-axis is first applied to the ejector rod 50. The ejector rod 50 pushes the first inclined ejector base 60 upward. The second inclined ejector base 70 moves along the first direction D1 under the push of the first inclined ejector base 60. The inclined ejector 80 moves along the second direction D2 under the push of the second inclined ejector base 70. The inclined ejector 80 can be dislodged along the reinforcing surface 133 of the reinforcing part 13 and the first side surface 141 and the second side surface 142 of the snap-fit ​​part 14, thereby realizing the demolding of the protective body 10. Among them, the first direction D1 and the second direction D2 have the same inclination direction. For example, as shown in the figure, the first direction D1 and the second direction D2 both represent the upward and rightward directions at the same time.

[0107] It should be noted that the directional terms such as "upper," "lower," "left," and "right" used in the description of the molding die 2000 in this application are mainly based on the attached description of the molding die 2000. Figure 12 and attached Figure 13 The orientation of the mold is described in the diagram, with the negative X-axis direction as "up", the positive X-axis direction as "down", the positive Z-axis direction as "left", and the negative Z-axis direction as "right". This does not limit the orientation of the molding mold 2000 in actual application scenarios.

[0108] In the molding die 2000 shown in this embodiment, the first inclined surface 602 of the first inclined base 60 and the second inclined surface 701 of the second inclined base 70 are used to optimize the ejection process of the inclined top 80 into an inclined retraction motion, so as to achieve demolding of the protective body 10 in the above embodiment.

[0109] Please see Figure 14 , Figure 14 This is a process flow diagram of the manufacturing process of a protective component 410 provided in this application.

[0110] This application provides a method for preparing a protective component, used to prepare the protective component 410 mentioned above. The method for preparing the protective component includes steps S1 to S3.

[0111] Step S1, provide a protective body 10, such as Figures 7a to 8 As shown. The protective body 10 can be made using the molding die 2000 shown above. Step S1 may include steps S11 and S12.

[0112] Step S11: A protective body 10 is formed within the cavity 700 of the molding die 2000. The protective body 10 can be formed using die casting or metal powder molding processes.

[0113] Step S12: The protective body 10 is ejected from the cavity 700 using the demolding mechanism 620. Specifically, as shown... Figure 13 As shown, a force F along the negative X-axis is first applied to the ejector rod 50. The ejector rod 50 pushes the first inclined ejector base 60 to move upward. The second inclined ejector base 70 moves along the first direction D1 (i.e., simultaneously upward and to the right) under the push of the first inclined ejector base 60. The inclined ejector 80 moves along the second direction D2 (i.e., simultaneously upward and to the right) under the push of the second inclined ejector base 70. The inclined ejector 80 can be dislodged along the reinforcing surface 133 of the reinforcing part 13, the first side surface 141 and the second side surface 142 of the snap-fit ​​part 14, thereby realizing the demolding of the protective body 10.

[0114] Step S2, install the decorative film 20 on the bottom surface of the connecting part 12, such as... Figure 15 and Figure 16 As shown. Specifically, the decorative film 20 is installed on the bottom surface of the connecting part 12 using the adhesive layer 40. The through hole 401 of the adhesive layer 40 connects the second fixing groove 122 of the connecting part 12 and the mating hole 201 of the decorative film 20, and both the through hole 401 and the mating hole 201 of the adhesive layer 40 are exposed on the snap-fit ​​part 14.

[0115] Step S3: Form a fixing body 30. The fixing body 30 is disposed in the first fixing groove 112 and the second fixing groove 122, covers the reinforcing part 13, and connects the protective body 10 and the decorative film 20. The protective body 10 and the decorative film 20 are connected as follows: Figures 5a to 6 As shown. Specifically, the assembly structure of the protective body 10 and the decorative film 20 can be placed into an injection mold, and then the fixing body 30 can be formed by injection molding. For example, molten plastic can flow from the first fixing groove 112 to the second fixing groove 122, and from the through hole 401 and the mating hole 201 to the surface of the assembly part 21 away from the connecting part 12, until the fixing body 30 is formed.

[0116] In the foldable terminal 1000 shown in this embodiment, a reinforcing part 13 is added to the protective body 10, and the reinforcing surface 133 of the reinforcing part 13 is combined with the fixing body 30 to increase the overall strength of the protective component 410. Furthermore, since an inverted interlocking structure is formed between the fixing body 30 and the protective body 10, the bonding strength between the fixing body 30 and the protective body 10 is increased, further improving the overall strength of the protective component 410. When the foldable terminal 1000 is dropped during use, due to the high overall strength of the protective component 410, the protective component 410 will not deform and crush the display screen 200, effectively protecting the display screen 200 and improving the user experience of the foldable terminal 1000.

[0117] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Where there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A protective component, characterized in that, include: Protective body, decorative film, and fixing body; The protective body includes a protective part, a connecting part, and a reinforcing part. The protective part is provided with a first fixing groove, the opening of which is located on the inner surface of the protective part. The first fixing groove has a first groove wall and a second groove wall. The first groove wall is opposite to the opening of the first fixing groove, and the second groove wall is connected to the first groove wall. The connecting part is connected to the protective part and is spaced apart from and opposite to the second groove wall. The connecting part is provided with a second fixing groove that communicates with the first fixing groove. The opening of the second fixing groove is located on the bottom surface of the connecting part. The reinforcing part is provided on the first groove wall and connected to the second groove wall. The decorative film is installed on the bottom surface of the connecting part, the fixing body is disposed in the first fixing groove and the second fixing groove, covers the reinforcing part, and connects the protective body and the decorative film.

2. The protective component according to claim 1, characterized in that, The reinforcing part includes a reinforcing surface facing away from the first groove wall surface. Along the direction from the connecting part to the second groove wall surface, the distance between the reinforcing surface and the first groove wall surface gradually increases, and the fixing body covers the reinforcing surface.

3. The protective component according to claim 1 or 2, characterized in that, The second fixing groove has a third groove wall surface, which is disposed opposite to the opening of the second fixing groove. The protective body also includes a snap-fit ​​part, which is disposed on the third groove wall surface, and the fixing body covers the snap-fit ​​part.

4. The protective component according to claim 3, characterized in that, The snap-fit ​​portion includes a first side and a second side. The first side faces the first fixing groove, and the second side is disposed opposite to the first side. Along the direction of the connecting portion toward the wall of the second groove, the distance between the first side and the second side and the wall of the first groove gradually increases.

5. The protective component according to any one of claims 1 to 4, characterized in that, The decorative film is provided with a mating hole, which penetrates the decorative film along the thickness direction and is disposed opposite to the second fixing groove. The fixing body is also disposed through the mating hole.

6. The protective component according to claim 5, characterized in that, The protective component further includes a connecting layer, which is connected between the connecting part and the decorative film. The connecting layer has a through hole that penetrates the connecting layer along its thickness direction and is disposed opposite to the second fixing groove. The fixing body also passes through the through hole.

7. A foldable terminal, characterized in that, It includes a first housing, a second housing, a foldable mechanism, a display screen, and a protective component as described in any one of claims 1 to 6, wherein the foldable mechanism is connected between the first housing and the second housing; The display screen includes a first display portion, a second display portion, and a foldable portion. The first display portion is mounted on the first housing, the second display portion is mounted on the second housing, and the foldable portion is disposed opposite to the foldable mechanism and is spaced apart from the edge of the first housing and the edge of the second housing to form a first gap. The protective part is installed on the foldable mechanism, and the decorative film is located between the connecting part and the foldable part, and covers at least part of the first gap.

8. The foldable terminal according to claim 7, characterized in that, The first gap includes a first sub-gap and a second sub-gap, and along the length direction of the foldable portion, the first sub-gap and the second sub-gap are respectively located at opposite ends of the foldable portion; There are two protective components, namely a first protective component and a second protective component. Along the length direction of the foldable mechanism, the first protective component and the second protective component are respectively installed on opposite sides of the foldable mechanism. The decorative film of the first protective component covers at least part of the first sub-gap, and the decorative film of the second protective component covers at least part of the second sub-gap.

9. The foldable terminal according to claim 7 or 8, characterized in that, The first display portion is spaced apart from the frame of the first housing to form a second gap, and the second display portion is spaced apart from the frame of the second housing to form a third gap; The foldable terminal further includes a first decorative element and a second decorative element. The first decorative element is installed on the first housing and covers at least part of the second gap. The second decorative element is installed on the second housing and covers at least part of the third gap.

10. The foldable terminal according to claim 9, characterized in that, At least a portion of the first decorative element is stacked with the decorative film, and / or at least a portion of the second decorative element is stacked with the decorative film.

11. A method for preparing a protective component, characterized in that, include: A protective body is provided, comprising a protective part, a connecting part, and a reinforcing part. The protective part has a first fixing groove, the opening of which is located on the inner surface of the protective part. The first fixing groove has a first groove wall and a second groove wall. The first groove wall is disposed opposite to the opening of the first fixing groove, and the second groove wall is connected to the first groove wall. The connecting part is connected to the protective part and is spaced apart from and opposite to the second groove wall. The connecting part has a second fixing groove communicating with the first fixing groove, the opening of which is located on the bottom surface of the connecting part. The reinforcing part is disposed on the first groove wall and connected to the second groove wall. The decorative film is installed on the bottom surface of the connecting part; A fixing body is formed, which is disposed in the first fixing groove and the second fixing groove, covers the reinforcing part, and connects the protective body and the decorative film.

12. The method for preparing the protective component according to claim 11, characterized in that, The step of providing a protective body includes: The protective body is formed within the cavity of a molding die, wherein the molding die includes a first die and a second die, the first die and the second die being joined together to form the cavity, the second die including a die shell and a demolding mechanism, the demolding mechanism being located inside the die shell, the demolding mechanism including a push rod, a first inclined push base, a second inclined push base and an inclined push, the first inclined push base being connected to one end of the push rod, the first inclined push base including a first inclined surface away from the push rod, the second inclined push base being located on the side of the first inclined push base away from the push rod, the second inclined push base including a second inclined surface facing the first inclined push base, the second inclined surface being in contact with the first inclined surface, the inclined push being rotatably connected to the end of the second inclined push base away from the first inclined push base, the end of the inclined push away from the second inclined push base abutting against the protective body; The protective body is removed from the cavity using the demolding mechanism.

13. A molding die for molding a protective body, characterized in that, The device includes a first mold and a second mold, which are mated together to form a cavity. The second mold includes a mold shell and a demolding mechanism. The demolding mechanism is located inside the mold shell and includes a push rod, a first inclined push base, a second inclined push base, and an inclined push. The first inclined push base is connected to one end of the push rod and includes a first inclined surface facing away from the push rod. The second inclined push base is located on the side of the first inclined push base facing away from the push rod and includes a second inclined surface facing the first inclined push base. The second inclined surface is in contact with the first inclined surface. The inclined push is rotatably connected to the end of the second inclined push base facing away from the first inclined push base, and the end of the inclined push facing away from the second inclined push base is used to abut against the protective body.

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