Middle frame and electronic equipment

Abstract

The utility model provides a middle frame and electronic equipment. The middle frame comprises a body and a reinforcing part. The body comprises a bottom plate and a first side frame, the bottom plate is provided with a first containing groove, the first containing groove is located in one side of the bottom plate in the width direction and extends in the length direction of the bottom plate, the first containing groove is used for installing a rotating shaft mechanism, and the first side frame is connected to the edge of one side of the bottom plate in the length direction and extends in the width direction of the bottom plate. The first side frame is provided with a mounting groove, and an opening of the mounting groove is located on the surface of the first side frame away from the bottom plate. At least part of the reinforcing piece is embedded into the mounting groove, the rigidity of the reinforcing piece is larger than that of the body, and the reinforcing piece is located on one side of the extending direction of the first containing groove. The embodiment of the utility model can enhance the local structural strength of the middle frame at the end part of the rotating shaft mechanism, and improve the falling reliability of the electronic equipment.

Description

Technical Field

[0001] The present application relates to the field of electronic devices, and in particular to a middle frame and electronic devices. Background Art

[0002] With the continuous development of flexible screen technology, it is widely used in a variety of foldable electronic devices. When an electronic device falls, especially when the electronic device falls in a closed state, the corners of the middle frame of the electronic device are easily affected by external impact force and locally collapse and deform. How to improve the structural strength of the middle frame to improve the reliability of electronic devices when they fall is an urgent problem to be solved. Utility Model Content

[0003] The embodiments of the present application provide a middle frame and an electronic device, which can enhance the local structural strength of the middle frame at the end of the hinge mechanism and improve the drop reliability of the electronic device.

[0004] In the first aspect, the present application provides a middle frame, including a body and a reinforcement. The body includes a bottom plate and a first side frame, the bottom plate is provided with a first accommodating groove, the first accommodating groove is located on one side of the bottom plate in the width direction and extends along the length direction of the bottom plate, the first accommodating groove is used to install a rotating shaft mechanism, the first side frame is connected to a side edge of the bottom plate in the length direction and extends along the width direction of the bottom plate, the first side frame is provided with a mounting groove, the opening of the mounting groove is located on the surface of the first side frame away from the bottom plate. At least part of the reinforcement is embedded in the interior of the mounting groove, the reinforcement is clamped with the body, the rigidity of the reinforcement is greater than the rigidity of the body, and the reinforcement is located on one side of the extension direction of the first accommodating groove.

[0005] In this embodiment, the reinforcing piece can be fixedly connected to the body of the middle frame by plugging. The shape of the reinforcing piece can be the same as the cavity shape of the installation groove of the body, so that the reinforcing piece can be embedded in the body, thereby improving the connection strength between the reinforcing piece and the body. And since the reinforcing piece can be connected to the body, the groove structure such as the connecting groove and the receiving groove on the body can be machined through mechanical processing, and the processing position of the groove body is more accurate at this time, and is not affected by the assembly process of the reinforcing piece and the body, so that the assembly tolerance is smaller and the connection strength is higher during the assembly of the middle frame and other components.

[0006] In addition, the reinforcement can be directly inserted into the main body without being fixedly connected to the main body through other connectors. Therefore, the assembly tolerance between the reinforcement and the main body is smaller, avoiding the position deviation of the reinforcement during assembly, resulting in insufficient overall structural strength of the middle frame, and causing partial failure of the entire machine when it falls.

[0007] In the embodiments provided by the present application, the mechanical strength of the middle frame positions corresponding to the two ends of the hinge mechanism is relatively high. When the electronic device is in a folded state, when the first side frame and the second side frame of the middle frame are impacted, the reinforcement can absorb the impact force and prevent the impact force from being transmitted to the hinge mechanism. The middle frame can resist external impacts, reduce wear and damage to the hinge mechanism, and thus extend the service life of the electronic device. A stable hinge mechanism can bring a better user experience. Users do not need to worry about electronic devices malfunctioning due to damage to the hinge mechanism, and can use the electronic devices with more confidence.

[0008] In a possible implementation manner, the mounting groove includes a first sub-groove and a second sub-groove, the opening of the first sub-groove is located on a surface of the first side frame away from the bottom plate, and the opening of the second sub-groove is located on a side of the groove bottom wall of the first sub-groove away from the first containing groove;

[0009] The reinforcing piece comprises a main body and a connecting portion which are connected to each other. The main body is embedded in the first sub-groove, and the connecting portion is embedded in the second sub-groove.

[0010] In this embodiment, since the edge of the first middle frame generally needs to be provided with a rounded transition, the distance between the bottom wall of the first sub-groove and the surface of the bottom plate away from the first side frame gradually decreases in the direction of the first side plate approaching the first receiving groove. The distance between the bottom wall of the first sub-groove facing the first receiving groove and the surface of the bottom plate away from the first side frame is small, and the structural arrangement groove of this part of the body is easy to penetrate the bottom plate, resulting in damage to the structure of the body, and further causing the body to be unable to maintain sealing and structural stability. Therefore, the second sub-groove is arranged between the end of the bottom wall of the first sub-groove away from the first receiving groove and the surface of the bottom plate away from the first side frame, so as to allow the reinforcement to be connected and avoid affecting the structural strength of the body.

[0011] In a possible implementation manner, the connecting portion is provided with a first connecting groove, and the first connecting groove is recessed from a peripheral side surface of the connecting portion;

[0012] The middle frame also includes a first protrusion, which is connected to the groove side wall of the second sub-groove, the first protrusion is located in the first connecting groove, and the first protrusion and the groove wall of the first connecting groove are mutually limited.

[0013] In this embodiment, the first connecting groove and the first protrusion on the inner wall of the second sub-groove can be mutually limited to prevent the reinforcing member from falling off from the installation groove, thereby increasing the connection stability between the reinforcing member and the first side frame.

[0014] In a possible implementation manner, the connecting portion is provided with a guide groove, the guide groove is recessed from a side surface of the connecting portion in a thickness direction, and the guide groove penetrates an end surface of the connecting portion away from the main body;

[0015] The middle frame includes a second protrusion, the second protrusion is connected to the groove side wall of the second sub-groove, and the second protrusion is located in the guide groove.

[0016] In this embodiment, the guide groove can form a mutually limiting structure with the second protrusion. When the connecting portion of the reinforcement is inserted into the second sub-groove, the second protrusion can be located in the guide groove, so that the second protrusion can slide in the guide groove, thereby guiding the insertion direction of the reinforcement, so that the reinforcement can be fully inserted into the installation groove in the correct direction. The guide groove can quickly and accurately guide the reinforcement into the correct position, thereby greatly reducing the time for manual alignment and calibration and improving the efficiency of the entire plug-in process. In the context of industrial automation and standardization, the design of the guide groove helps to achieve a fast and accurate connection between the reinforcement and the first side frame, supports the smooth operation of the automated production line, and improves the production efficiency and product quality of the middle frame.

[0017] Through the precise guide groove design, it can be ensured that the reinforcement is completely consistent with the installation groove during the insertion process, avoiding the risk of loose connection or damage to the interface due to angle or position deviation.

[0018] Accurate insertion not only ensures a firm physical connection between the reinforcement and the first side frame, but also helps maintain the stability of the middle frame during operation, thereby avoiding a decrease in the mechanical properties of the middle frame due to a poor connection between the reinforcement and the first side frame during use of the electronic device.

[0019] In a possible implementation manner, an end surface of the connecting portion facing away from the main body is connected to a peripheral side surface of the connecting portion via a chamfered surface.

[0020] In this embodiment, if the reinforcing member has a right angle or sharp angle, the stress concentration will increase, causing the reinforcing member to easily crack and break under external impact. The chamfered structure can disperse the stress, reduce stress concentration, and improve the durability and reliability of the reinforcing member.

[0021] In addition, the peripheral side surface and end surface of the connection part can be connected through a chamfered inclined surface transition to make the overall structure of the connection part smoother, avoiding the sharp position of the reinforcement part during the production and assembly process to scratch the processing tools or production personnel, thereby improving production safety.

[0022] Furthermore, when the reinforcing member is inserted into the mounting groove of the first side frame, the end of the connecting portion with the chamfer can be inserted into the mounting groove first, and the chamfer structure can serve as an assembly guide to facilitate the alignment of the reinforcing member and the mounting groove. The chamfer can make it easier to align and insert the reinforcing member during the assembly process, improve assembly efficiency, and reduce the production cost of the middle frame.

[0023] In a possible implementation manner, the main body is provided with a second connecting groove, and an opening of the second connecting groove is located on a surface of the main body away from the connecting portion;

[0024] The middle frame also includes a fixed frame and a colloid, the colloid is located in the second connecting groove, the fixed frame is connected to the groove wall of the second connecting groove through the colloid, and the fixed frame is used to limit the display screen.

[0025] In this embodiment, the fixed frame provides a stable connection between the display screen and the middle frame, which can ensure that the electronic device maintains a stable structure during use and prevent the display screen from loosening or being damaged due to vibration or external impact.

[0026] In a possible implementation manner, the body further includes a second side frame, the second side frame is connected to one side edge of the bottom plate in the length direction, and the second side frame and the first side frame are opposite to each other and spaced apart in the length direction of the bottom plate;

[0027] The number of reinforcing pieces is at least two, one reinforcing piece is embedded in the first side frame, and the other reinforcing piece is embedded in the second side frame, and the two reinforcing pieces are respectively located on both sides of the length direction of the first accommodating groove.

[0028] In a second aspect, the present application provides an electronic device, including a middle frame as described above for a rotating shaft mechanism, the number of middle frames being two, namely a first middle frame and a second middle frame, the first middle frame being provided with a first receiving groove, the second middle frame being provided with a second receiving groove, the first receiving groove and the second receiving groove being connected, at least part of the rotating shaft mechanism being located in the first receiving groove and the second receiving groove, and the reinforcing member being located on one side of the length direction of the rotating shaft mechanism.

[0029] In a possible implementation manner, the first side frame is further provided with an avoidance groove, which runs through a portion of the surface of the first side frame facing the first accommodating groove and a groove wall of the installation groove, and a portion of the rotating shaft mechanism is located in the avoidance groove.

[0030] In a possible embodiment, the main body includes a first sub-section and a second sub-section. The first sub-section and the second sub-section are arranged in sequence along the extension direction of the first side frame, at least part of the first sub-section is exposed relative to the avoidance groove, and the average thickness of the first sub-section is greater than the average thickness of the second sub-section.

[0031] In this embodiment, the first side frame has a relatively weak structural strength at the location of the avoidance groove. Increasing the thickness of the first sub-portion of the reinforcing member can supplement the structural strength of the first side frame at the location of the avoidance groove and improve the overall structural stability of the first middle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are only some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained like these drawings without paying any creative work.

[0033] Figure 1is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application in a semi-expanded state;

[0034] Figure 2 yes Figure 1 A schematic diagram of the structure of the electronic device shown in the folded state;

[0035] Figure 3 yes Figure 1 A schematic diagram of a portion of the structure of the electronic device shown;

[0036] Figure 4 yes Figure 3 The structural diagram of the main body shown;

[0037] Figure 5 yes Figure 3 A partial structural schematic diagram of the middle frame shown;

[0038] Figure 6 yes Figure 4 A schematic diagram of the structure of the A part of the body shown;

[0039] Figure 7 yes Figure 6 A schematic cross-sectional view of the body at BB shown;

[0040] Figure 8 yes Figure 5 A schematic structural diagram of a reinforcement member at an angle shown;

[0041] Fig. 9 yes Figure 8 A schematic structural diagram of the reinforcement member shown in FIG. DETAILED DESCRIPTION

[0042] The specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can also be implemented in other ways different from those described herein, and therefore, the present application is not limited to the following embodiments.

[0043] For ease of understanding, the terms involved in the embodiments of the present application are first explained.

[0044] Multiple: refers to two or more than two.

[0045] Connection: should be understood in a broad sense. For example, A and B are connected, which can be either direct or indirect through an intermediary.

[0046] The specific implementation of the present application will be clearly described below in conjunction with the accompanying drawings.

[0047] Please refer to Figure 1 and Figure 2, Figure 1 It is a schematic structural diagram of the electronic device 100 provided in an embodiment of the present application in a semi-expanded state. Figure 2 yes Figure 1 The structure diagram of the electronic device 100 shown is in a folded state.

[0048] For ease of description, the width direction of the electronic device 100 is defined as the X direction, the length direction of the electronic device 100 is defined as the Y direction, and the thickness direction of the electronic device 100 is defined as the Z direction. The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0049] The electronic device 100 includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device, etc. In the embodiment of the present application, the electronic device 100 is taken as an example of a mobile phone.

[0050] The electronic device 100 shown in the embodiment of the present application is an electronic device that can be folded once. In some other embodiments, the electronic device 100 can also be an electronic device that can be folded multiple times (more than twice). In this case, the electronic device 100 may include multiple parts, two adjacent parts can be folded relatively close to each other until the electronic device 100 is in a folded state, and two adjacent parts can be unfolded relatively far away until the electronic device 100 is in a flattened state.

[0051] Please refer to Figure 1-Figure 3 , Figure 3 yes Figure 1 The electronic device 100 is a partial structural schematic diagram. The electronic device 100 includes a display screen 10 and a housing 20. The display screen 10 and the housing 20 are fixedly connected.

[0052] It should be noted that Figure 1 The purpose is only to schematically describe the connection relationship between the housing 20 and the display screen 10, and it is not to specifically limit the connection position, specific structure and quantity of each device. The structure illustrated in the embodiment of the present application does not constitute a specific limitation on the electronic device 100. In other embodiments of the present application, the electronic device 100 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The illustrated components can be implemented in hardware, software, or a combination of software and hardware.

[0053] See also Figure 3The display screen 10 includes a display surface 101 and a mounting surface 102, and the display surface 101 and the mounting surface 102 are arranged opposite to each other in the thickness direction of the display screen 10. The display surface 101 is used to display text, images, videos, etc. Figure 1 The display screen 10 includes a first part 11, a second part 12 and a foldable part 13. The foldable part 13 is located between the first part 11 and the second part 12, and the foldable part 13 can be bent along the Y direction as an axis. The first part 11, the second part 12 and the foldable part 13 together constitute the display screen 10. In this embodiment, the display screen 10 adopts a flexible display screen, for example, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (mini organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, and a quantum dot light emitting diode (quantum dot light emitting diodes, QLED) display screen.

[0054] Please refer to Figure 2 and Figure 3 The housing 20 includes a middle frame 21, a hinge mechanism 22 and a fixed frame 23. There are two middle frames 21, namely a first middle frame 211 and a second middle frame 212. The first middle frame 211 is provided with a first receiving groove 2110, and the second middle frame 212 is provided with a second receiving groove (not shown in the figure), and the first receiving groove 2110 and the second receiving groove are connected to form a receiving groove. The hinge mechanism 22 is installed in the receiving groove and is fixedly connected to the first middle frame 211 and the second middle frame 212 to realize the rotation connection between the first middle frame 211 and the second middle frame 212. The fixed frame 23 is used to connect the first middle frame 211 and the second middle frame 212 to the display screen 10. Among them, the first middle frame 211 is connected to the first part 11 of the display screen 10 and is located on one side of the mounting surface 102 of the display screen 10. The second middle frame 212 is connected to the second part 12 of the display screen 10 and is located on one side of the mounting surface 102 of the display screen 10. The hinge mechanism 22 is connected to the foldable portion 13 of the display screen 10 and abuts against the edge of the display surface 101 of the display screen 10 .

[0055] With the continuous development of flexible screen technology, it is widely used in a variety of foldable electronic devices. When an electronic device falls, especially when the electronic device falls in a closed state, the corners of the middle frame of the electronic device are easily affected by external impact force and locally collapse and deform. How to improve the structural strength of the middle frame to improve the reliability of electronic devices when they fall is an urgent problem to be solved.

[0056] Based on this, the present application provides a middle frame 21 that can enhance the local structural strength of the middle frame 21 at the end of the hinge mechanism 22 and improve the drop reliability of the electronic device 100.

[0057] Please refer to Figure 4 and Figure 5 , Figure 4 yes Figure 3 The structural diagram of the main body shown in FIG. Figure 5 yes Figure 3 The schematic diagram of the partial structure of the middle frame 21 shown in FIG. The first middle frame 211 includes a body 2111 and a reinforcing member 2112. The reinforcing member 2112 is embedded in the body 2111 and is engaged with the body 2111 to increase the structural strength of the body 2111, thereby improving the impact resistance of the first middle frame 211, preventing the first middle frame 211 from being deformed by external impact and squeezing the shaft mechanism 22, and preventing the shaft mechanism 22 from being damaged due to squeezing.

[0058] The body 2111 includes a bottom plate 2113 , a first side frame 2114 , a second side frame 2117 , and a third side frame 2118 . The first side frame 2114 , the second side frame 2117 , and the third side frame 2118 are all connected to the periphery of the bottom plate 2113 .

[0059] Specifically, the bottom plate 2113 includes a first surface 2115 and a second surface 2116 that are arranged opposite to each other along the thickness direction. The first surface 2115 is provided with a first edge region 2113a and a second edge region 2113b that are arranged opposite to each other along its width direction, and a third edge region 2113c and a fourth edge region 2113d that are arranged opposite to each other along its length direction. The thickness direction of the bottom plate 2113 is the Z direction, the length direction of the bottom plate 2113 is the Y direction, and the width direction of the bottom plate 2113 is the X direction.

[0060] The bottom plate 2113 is further provided with a first receiving groove 2110. The first receiving groove 2110 is located in the first edge region 2113a and extends along the length direction of the bottom plate 2113. The opening of the first receiving groove 2110 is located on the first surface 2115 and passes through the side surface in the length direction of the bottom plate 2113. The first receiving groove 2110 is used for installing the rotating shaft mechanism 22.

[0061] Please refer to Figure 4 and Figure 5The first side frame 2114 is connected to the first surface 2115 of the bottom plate 2113, and is located in the third edge region 2113c, and extends along the width direction of the bottom plate 2113. The second side frame 2117 is connected to the first surface 2115 of the bottom plate 2113, and is located in the fourth edge region 2113d, and extends along the width direction of the bottom plate 2113. The second side frame 2117 is arranged opposite to the first side frame 2114 in the Y direction. The third side frame 2118 is connected to the first surface 2115 of the bottom plate 2113, and is located in the second edge region 2113b, and extends along the length direction of the bottom plate 2113. The third side frame 2118 is connected to one end of the first side frame 2114 and the second side frame 2117 away from the first accommodating groove 2110 of the bottom plate 2113.

[0062] See also Figure 6 , Figure 6 yes Figure 4 The schematic diagram of the structure of the A part of the body 2111 shown in FIG. The first side frame 2114 is provided with a mounting groove 213, an avoidance groove 214 and a plug-in groove 215. The opening of the mounting groove 213 is located on the surface of the first side frame 2114 away from the bottom plate 2113. The mounting groove 213 extends from one end of the first side frame 2114 toward the first receiving groove 2110 to a side away from the first receiving groove 2110. The plug-in groove 215 is located on the side of the mounting groove 213 away from the first receiving groove 2110. The plug-in groove 215 is connected to the mounting groove 213.

[0063] See also Figure 7 , Figure 7 yes Figure 6 The schematic cross-sectional view at BB of the body 2111 shown. The mounting groove 213 includes a first sub-groove 2131 and a second sub-groove 2132. The opening of the first sub-groove 2131 is located on the surface of the first side frame 2114 away from the bottom plate 2113. The first sub-groove 2131 extends from the surface of the first side frame 2114 to the bottom plate 2113. The opening of the second sub-groove 2132 is located on the side of the groove bottom wall of the first sub-groove 2131 away from the first accommodating groove 2110. The second sub-groove 2132 extends from the groove bottom wall of the first sub-groove 2131 to the bottom plate 2113.

[0064] In this embodiment, since the edge of the first middle frame 211 generally needs to be provided with a rounded transition, the distance between the bottom wall of the first sub-groove 2131 and the second surface 2116 of the bottom plate 2113 gradually decreases in the opposite direction of the X direction. The distance between the bottom wall of the first sub-groove 2131 facing the first receiving groove 2110 and the second surface 2116 of the bottom plate 2113 is small, and the structural arrangement groove of this part of the body 2111 is easy to penetrate the second surface 2116 of the bottom plate 2113, resulting in the structure of the body 2111 being damaged, and further resulting in the body 2111 being unable to maintain sealing and structural stability. Therefore, the second sub-groove 2132 is arranged between the end of the bottom wall of the first sub-groove 2131 away from the first receiving groove 2110 and the second surface 2116, so as to allow the reinforcement 2112 to be connected and avoid affecting the structural strength of the body 2111.

[0065] The first side frame 2114 is further provided with a first protrusion 216 and a second protrusion 217. The first protrusion 216 and the second protrusion 217 are connected to the groove side wall of the first mounting groove 213. Specifically, the first protrusion 216 is connected to the groove side wall of the second sub-groove 2132 in an annular shape, and the first protrusion 216 is spaced from the groove bottom wall of the second sub-groove 2132 and the groove bottom wall of the first sub-groove 2131.

[0066] The number of the second protrusions 217 may be two. The two second protrusions 217 are respectively connected to the two sides of the groove sidewall of the first installation groove 213 that are arranged opposite to each other along the Y direction. The appearance surface of the second protrusion 217 may be an arc surface, and the middle area of ​​the arc surface protrudes toward the surface of the groove sidewall away from the second sub-groove 2132. The second protrusion 217 is connected to the first protrusion 216, and the second protrusion 217 protrudes relative to the first protrusion 216.

[0067] Please refer to Figure 6 The avoidance groove 214 penetrates a portion of the surface of the first side frame 2114 facing the first accommodation groove 2110 and a groove side wall of the first sub-groove 2131 of the installation groove 213. The avoidance groove 214 can connect the installation groove 213 with the first accommodation groove 2110.

[0068] Please refer to Figure 7 The plugging slot 215 is located on the side of the mounting slot 213 facing the X direction. The opening of the plugging slot 215 is located on the surface of the first side frame 2114 away from the bottom plate 2113. The plugging slot 215 is connected to the first sub-slot 2131 of the mounting slot 213.

[0069] The rigidity of the reinforcing piece 2112 of the first middle frame 211 is greater than the rigidity of the main body 2111 of the first middle frame 211. At least a portion of the reinforcing piece 2112 is embedded in the installation groove 213.

[0070] See also Figure 8 , Figure 8 yes Figure 5 The structure diagram of the reinforcing piece 2112 at an angle is shown. The reinforcing piece 2112 can be riveted into the body 2111. Riveting means that the reinforcing piece 2112 is embedded in the body 2111 and is clamped with the body 2111, and the reinforcing piece 2112 can be embedded in the body 2111. The reinforcing piece 2112 includes a main body 221 and a connecting portion 222 connected to each other. The main body 221 is embedded in the first sub-groove 2131, and the connecting portion 222 is embedded in the second sub-groove 2132.

[0071] Exemplarily, the reinforcement 2112 can be formed by metal additive manufacturing (MIM). In this embodiment, metal additive manufacturing is an additive manufacturing technology that mixes metal powder with a binder and prepares precision metal parts by injection molding. This technology combines the characteristics of powder metallurgy and plastic injection molding, and can prepare metal parts with complex shapes, high dimensional accuracy, and excellent mechanical properties.

[0072] The main body 221 includes a first sub-section 2211 and a second sub-section 2212. The first sub-section 2211 and the second sub-section 2212 are connected and arranged sequentially along the X direction. The average thickness of the first sub-section 2211 is greater than the average thickness of the second sub-section 2212. The thickness of the first sub-section 2211 can be sequentially thinned along the X direction.

[0073] The end surfaces of the first sub-section 2211 and the second sub-section 2212 facing the Z direction together form a first end surface 2213. The end surfaces of the first sub-section 2211 and the second sub-section 2212 facing the opposite direction of the Z direction together form a second end surface 2214. The side surfaces of the first sub-section 2211 and the second sub-section 2212 facing the Y direction together form a first side surface 2215. The side surfaces of the first sub-section 2211 and the second sub-section 2212 facing the opposite direction of the Y direction together form a second side surface 2216. The surface of the first sub-section 2211 facing the opposite direction of the X direction is a third side surface 2217. The surface of the second sub-section 2212 facing the X direction is a fourth side surface 2218. The Z direction can be understood as the length direction of the reinforcement 2112. The Y direction can be understood as the thickness direction of the reinforcement 2112. The X direction can be understood as the width direction of the reinforcement 2112.

[0074] Please refer to Figure 5 and Figure 8, the first sub-portion 2211 and the second sub-portion 2212 are both located in the first sub-groove 2131, and the first side surface 2215 and the fourth side surface 2218 of the main body 221 are in contact with the groove wall of the first sub-groove 2131. The first sub-portion 2211 is exposed relative to the avoidance groove 214. Part of the third side surface 2217 and part of the second side surface 2216 are exposed relative to the avoidance groove 214. In addition, part of the second side surface 2216 is in contact with the groove wall of the first sub-groove 2131. The first end surface 2213 can be flush with the surface of the first side frame 2114 away from the bottom plate 2113. The second end surface 2214 is in contact with the groove bottom of the first sub-groove 2131.

[0075] In this embodiment, the first side frame 2114 has a relatively weak structure at the location of the avoidance groove 214. Increasing the thickness of the first sub-portion 2211 of the reinforcing member 2112 can supplement the structural strength of the first side frame 2114 at the location of the avoidance groove 214 and improve the overall structural stability of the first middle frame 211.

[0076] The main body 221 is provided with a second connecting groove 2219. The opening of the second connecting groove 2219 is located on the surface of the main body 221 away from the connecting portion 222. Specifically, the second connecting groove 2219 is recessed by the first end surface 2213 of the main body 221. The second connecting groove 2219 also penetrates part of the fourth side surface 2218 and the first side surface 2215. The second connecting groove 2219 is located in the second sub-portion 2212 and the first sub-portion 2211. The second connecting groove 2219 is connected to the first sub-portion 2131. And the second connecting groove 2219 is connected to the plug-in slot 215.

[0077] In this embodiment, the length of the second connection groove 2219 may exceed the length of the second sub-portion 2212. The length direction is the X direction. The second connection groove 2219 may extend to the inside of the first sub-portion 2211. The extension of the second connection groove 2219 may allow more colloids to be arranged in the second connection groove 2219, and the colloids may be fixedly connected to the fixed frame 23, thereby increasing the connection stability between the fixed frame 23 and the middle frame 21, so that the display screen 10 may be stably connected to the middle frame 21 through the fixed frame 23, thereby improving the overall structural stability of the electronic device 100.

[0078] The connecting portion 222 is connected to the second end surface 2214 of the main body 221. The connecting portion 222 is connected to the second sub-portion 2212 of the main body 221. That is, the connecting portion 222 is connected to one end of the second end surface 2214 facing the X direction. The connecting portion 222 extends from the second end surface 2214 in the opposite direction of the Z direction.

[0079] Please refer to Fig. 9 , Fig. 9 yes Figure 8A schematic structural diagram of the reinforcement piece 2112 from another angle is shown. The connecting portion 222 includes an end face (not shown) and a peripheral side face 2222. For ease of description, the end face of the connecting portion 222 is defined as a third end face 2221. The third end face 2221 is the surface of the connecting portion 222 that is away from the main body 221. The peripheral side face 2222 is connected between the second end face 2214 and the third end face 2221 of the main body 221. The peripheral side face 2222 is connected to the third end face 2221 via a chamfered surface 2223. That is, the end of the connecting portion 222 that is away from the main body 2111 is chamfered.

[0080] In the actual assembly process, if the reinforcing piece 2112 has a right angle or an acute angle, the stress concentration will increase, causing the reinforcing piece 2112 to easily crack and break under the impact of external force. The chamfered structure can disperse the stress, reduce the stress concentration, and improve the durability and reliability of the reinforcing piece 2112.

[0081] In addition, the peripheral side surface 2222 and the third end surface 2221 of the connecting portion 222 can be connected by a chamfered slope transition to make the overall structure of the connecting portion 222 smoother, thereby preventing the sharp position of the reinforcement part 2112 from scratching processing tools or production personnel during the production and assembly process, thereby improving production safety.

[0082] Furthermore, when the reinforcing member 2112 is inserted into the mounting groove 213 of the first side frame 2114, the end of the connecting portion 222 with the chamfer can be inserted into the mounting groove 213 first, and the chamfered surface 2223 can be used as an assembly guide to facilitate the alignment of the reinforcing member 2112 with the mounting groove 213. The chamfered surface 2223 can make it easier to align and insert the reinforcing member 2112 into the mounting groove 213 during the assembly process, thereby improving assembly efficiency and reducing the production cost of the middle frame 21.

[0083] Please continue reading Fig. 9 The connecting portion 222 is provided with a first connecting groove 2224 and a guide groove 2225. The first connecting groove 2224 is recessed by the peripheral side surface 2222 of the connecting portion 222. The first connecting groove 2224 surrounds the connecting portion 222. There is a gap between the first connecting groove 2224 and the third end surface 2221 of the connecting portion 222. That is, the first connecting groove 2224 does not penetrate the third end surface 2221 of the connecting portion 222. The first connecting groove 2224 is located between the third end surface 2221 and the second end surface 2214 of the main body 221.

[0084] The guide groove 2225 is recessed by the side surface in the thickness direction of the connecting portion 222, and the guide groove 2225 penetrates the third end surface 2221 of the connecting portion 222 away from the body 2111. Specifically, the guide groove 2225 can penetrate the connecting portion 222 along the Z direction, and the opening of the guide groove 2225 is located on the surface of the connecting portion 222 facing the Y direction. The guide groove 2225 is connected to the first connecting groove 2224, and the guide groove 2225 can penetrate part of the groove wall of the first connecting groove 2224. Exemplarily, the groove wall of the guide groove 2225 can be a curved surface. The number of the guide grooves 2225 can be two, and the openings of the two guide grooves 2225 are respectively located on two side surfaces of the connecting portion 222 that are oppositely arranged along the Y direction.

[0085] Please refer to Figure 7-Figure 9 , the reinforcing piece 2112 is connected to the groove wall of the mounting groove 213. During the assembly process, the connecting portion 222 of the reinforcing piece 2112 can be inserted into the first sub-groove 2131 and the second sub-groove 2132 in sequence from the opening of the first sub-groove 2131 of the mounting groove 213. The guide groove 2225 of the peripheral side surface 2222 of the connecting portion 222 can be mutually limited with the second protrusion 217 on the groove wall of the second sub-groove 2132, so that the connecting portion 222 can be inserted downward into the second sub-groove 2132. The first connecting groove 2224 of the peripheral edge of the connecting portion 222 can be mutually limited with the first protrusion 216 on the groove wall of the second sub-groove 2132, so that the connecting portion 222 can be fixed in the second sub-groove 2132. The reinforcing piece 2112 is installed in the mounting groove 213 of the first side frame 2114, and the reinforcing piece 2112 is located on one side of the first accommodating groove 2110 of the body 2111 in the Y direction. That is, the reinforcing member 2112 is located on one side of the extension direction of the first accommodating groove 2110. The main body 221 can be located in the first sub-groove 2131, and the peripheral side surface 2222 of the main body 221 can be in contact with the groove wall of the first sub-groove 2131. The groove wall of the second connecting groove 2219 on the main body 221 can be together with the groove wall of the first sub-groove 2131 to form a colloid accommodating space, and the accommodating space can be plugged into the fixed frame 23.

[0086] In this embodiment, the guide groove 2225 can form a mutually limited structure with the second protrusion 217. When the connecting portion 222 of the reinforcement 2112 is inserted into the second sub-groove 2132, the second protrusion 217 can be located in the guide groove 2225, so that the second protrusion 217 can slide in the guide groove 2225, thereby guiding the insertion direction of the reinforcement 2112, so that the reinforcement 2112 can be fully inserted into the installation groove 213 in the correct direction. The guide groove 2225 can quickly and accurately guide the reinforcement 2112 into the correct position, thereby greatly reducing the time for manual alignment and calibration, and improving the efficiency of the entire plug-in process. In the context of industrial automation and standardization, the design of the guide groove 2225 helps to achieve a quick and accurate connection between the reinforcement 2112 and the first side frame 2114, supports the smooth operation of the automated production line, and improves the production efficiency and product quality of the middle frame 21.

[0087] The precise design of the guide groove 2225 can ensure that the reinforcing piece 2112 is completely aligned with the mounting groove 213 during the insertion process, thereby avoiding the risk of loose connection or damage to the interface due to angle or position deviation.

[0088] Accurate insertion not only ensures a firm physical connection between the reinforcement 2112 and the first side frame 2114 , but also helps maintain the stability of the middle frame 21 during operation, thereby avoiding a decrease in the mechanical properties of the middle frame 21 due to poor connection between the reinforcement 2112 and the first side frame 2114 during use of the electronic device 100 .

[0089] The first connection groove 2224 can limit each other with the first protrusion 216 on the inner wall of the second sub-groove 2132 to prevent the reinforcing piece 2112 from falling off from the installation groove 213 , thereby increasing the connection stability between the reinforcing piece 2112 and the first side frame 2114 .

[0090] The guide groove 2225 may also provide an overflow channel for machining debris or air in the installation groove 213 , so that the reinforcing member 2112 may be smoothly inserted into the installation groove 213 .

[0091] In some other embodiments, the first middle frame 211 may be provided with two reinforcing members 2112, and the body 2111 of the first middle frame 211 may be provided with two mounting grooves 213. One mounting groove 213 is located in the first side frame 2114, and the other mounting groove 213 is located in the second side frame 2117. The two reinforcing members 2112 are respectively installed in the two mounting grooves 213. The two reinforcing members 2112 may be located on opposite sides of the first accommodating groove 2110 of the bottom plate 2113 in the length direction.

[0092] The second middle frame 212 may include a body (not shown) and a reinforcement (not shown). The structure of the body of the second middle frame 212 may be mirror-symmetrical with the structure of the body 2111 of the first middle frame 211 described above. The structure of the reinforcement of the second middle frame 212 may be mirror-symmetrical with the structure of the reinforcement 2112 of the first middle frame 211. The structure of the first middle frame 211 is described in detail in this application. The specific structure of the second middle frame 212 can be found in the above and below detailed descriptions of the specific structure of the first middle frame 211. This application does not repeat the structure of the second middle frame 212.

[0093] Please refer to Figure 3 and Figure 5 The fixed frame 23 is connected to the second connection groove 2219, and the fixed frame 23 is used to connect with the display screen 10 of the electronic device 100. Figure 3 and Figure 5 Part of the fixed frame 23 is inserted into the second connection groove 2219 and the first sub-groove 2131, and the fixed frame 23 is connected to the groove wall of the second connection groove 2219 through colloid. The fixed edge abuts against the edge of the surface of the display screen 10 away from the middle frame 21, so as to fix the display screen 10 between the fixed frame 23 and the middle frame 21.

[0094] In this embodiment, the fixed frame 23 provides a stable connection between the display screen 10 and the middle frame 21, which can ensure that the electronic device 100 maintains a stable structure during use and prevent the display screen 10 from loosening or being damaged due to vibration or external impact.

[0095] The fixed frame 23 can protect the edge of the display screen 10 from direct impact or collision by external objects, reducing the risk of damage to the display screen 10. At the same time, the fixed frame 23 can also prevent the display screen 10 from accidentally falling off or popping out during use, ensuring the safety of the user.

[0096] The rotating shaft mechanism 22 connects the first middle frame 211 and the second middle frame 212. Specifically, the rotating shaft mechanism 22 is connected to the bottom plate 2113 of the first middle frame 211 and the bottom plate of the second middle frame 212, and at least part of the rotating shaft mechanism 22 is located in the receiving groove surrounded by the first middle frame 211 and the second middle frame 212. The two ends of the rotating shaft mechanism 22 in the length direction are respectively arranged opposite to the first middle frame 211 and the reinforcement piece 2112 and the reinforcement piece of the second middle frame 212.

[0097] The hinge mechanism 22 is tightly connected with the first middle frame 211 and the second middle frame 212. The hinge mechanism 22 can withstand various forces and moments generated during the unfolding and folding process of the electronic device 100, thereby ensuring the stability and reliability of the electronic device 100.

[0098] When the electronic device 100 is folded, the hinge mechanism 22 can provide sufficient support for the foldable portion 13 of the display screen 10 to prevent it from being deformed or damaged due to gravity or other external forces. At the same time, when the electronic device 100 is unfolded, the hinge mechanism 22 can ensure that the foldable portion of the electronic device 100 can be unfolded smoothly and remain flat. The hinge mechanism 22 can ensure that the electronic device 100 maintains a stable posture during the unfolding and folding process, preventing the center of gravity of the electronic device 100 from shifting or the structure from becoming unstable.

[0099] In this embodiment, the reinforcing piece 2112 can be fixedly connected to the body 2111 of the middle frame 21 by plugging. The shape of the reinforcing piece 2112 can be the same as the cavity shape of the mounting groove 213 of the body 2111, so that the reinforcing piece 2112 can be embedded in the body 2111, thereby improving the connection strength between the reinforcing piece 2112 and the body 2111. And since the reinforcing piece 2112 can be connected to the body 2111, the groove structure such as the second connecting groove 2219 and the receiving groove on the body 2111 can be machined through mechanical processing, at this time, the processing position of the groove is more accurate, and is not affected by the assembly process of the reinforcing piece 2112 and the body 2111, so that the assembly tolerance is smaller and the connection strength is higher during the assembly of the middle frame 21 and other components.

[0100] In addition, the reinforcement 2112 can be directly inserted into the main body 2111 without being fixedly connected to the main body 2111 through other connectors. Therefore, the assembly tolerance between the reinforcement 2112 and the main body 2111 is smaller, which avoids the position deviation of the reinforcement 2112 during assembly, resulting in insufficient overall structural strength of the middle frame 21, and causing partial failure of the whole machine due to falling.

[0101] In the embodiment provided by the present application, the mechanical strength of the positions of the middle frame 21 corresponding to the two ends of the hinge mechanism 22 is relatively high. When the electronic device 100 is in a folded state, when the first side frame 2114 and the second side frame 2117 of the middle frame 21 are impacted, the reinforcement 2112 can absorb the impact force and prevent the impact force from being transmitted to the hinge mechanism 22. The middle frame 21 can resist external impacts, reduce the wear and damage of the hinge mechanism 22, and thus extend the service life of the electronic device 100. A stable hinge mechanism 22 can bring a better user experience. Users do not need to worry about the electronic device 100 malfunctioning due to damage to the hinge mechanism 22, and can use the electronic device 100 more assuredly.

[0102] The above are exemplary embodiments of the present application. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made thereto without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A middle frame, characterized in that: include: The body comprises a bottom plate and a first side frame, wherein the bottom plate is provided with a first accommodating groove, the first accommodating groove is located at one side of the bottom plate in the width direction and extends along the length direction of the bottom plate, the first accommodating groove is used to install a rotating shaft mechanism, the first side frame is connected to one side edge of the bottom plate in the length direction and extends along the width direction of the bottom plate, the first side frame is provided with a mounting groove, and the opening of the mounting groove is located on the surface of the first side frame away from the bottom plate; A reinforcing piece, at least part of which is embedded in the installation groove, the reinforcing piece is clamped with the body, the rigidity of the reinforcing piece is greater than the rigidity of the body, and the reinforcing piece is located on one side of the extension direction of the first accommodating groove.

2. The middle frame according to claim 1, characterized in that: The mounting groove comprises a first sub-groove and a second sub-groove, the opening of the first sub-groove is located on the surface of the first side frame away from the bottom plate, and the opening of the second sub-groove is located on a side of the groove bottom wall of the first sub-groove away from the first containing groove; The reinforcing piece includes a main body and a connecting portion connected to each other, the main body is embedded in the first sub-groove, and the connecting portion is embedded in the second sub-groove.

3. The middle frame according to claim 2, characterized in that: The connecting portion is provided with a first connecting groove, and the first connecting groove is recessed from the peripheral side surface of the connecting portion; The middle frame further includes a first protrusion, the first protrusion is connected to the groove side wall of the second sub-groove, the first protrusion is located in the first connecting groove, and the first protrusion and the groove wall of the first connecting groove are mutually limited.

4. The middle frame according to claim 3, characterized in that: The connecting portion is provided with a guide groove, the guide groove is recessed from the side surface of the connecting portion in the thickness direction, and the guide groove passes through the end surface of the connecting portion away from the main body; The middle frame includes a second protrusion, the second protrusion is connected to the groove side wall of the second sub-groove, and the second protrusion is located in the guide groove.

5. The middle frame according to claim 3, characterized in that: The end surface of the connecting portion facing away from the main body is connected to the peripheral side surface of the connecting portion through a chamfered surface.

6. The middle frame according to any one of claims 2 to 5, characterized in that: The main body is provided with a second connecting groove, and the opening of the second connecting groove is located on the surface of the main body away from the connecting portion; The middle frame further includes a colloid, which is located in the second connecting groove. The colloid is used to connect the fixed frame to the groove wall of the second connecting groove. The fixed frame is used to limit the display screen.

7. The middle frame according to any one of claims 1 to 5, characterized in that: The body further includes a second side frame, the second side frame is connected to one side edge of the bottom plate in the length direction, and the second side frame and the first side frame are opposite to each other and spaced apart in the length direction of the bottom plate; The number of the reinforcing pieces is at least two, one of the reinforcing pieces is embedded in the first side frame, and the other of the reinforcing pieces is embedded in the second side frame, and the two reinforcing pieces are respectively located on both sides of the length direction of the first containing groove.

8. An electronic device, characterized in that: A middle frame comprising a rotating shaft mechanism as claimed in any one of claims 1 to 7, wherein the number of the middle frames is two, namely a first middle frame and a second middle frame, the first middle frame is provided with the first receiving groove, the second middle frame is provided with the second receiving groove, and the first receiving groove and the second receiving groove are connected; At least part of the rotating shaft mechanism is located in the first accommodating groove and the second accommodating groove, and the reinforcing member is located on one side of the length direction of the rotating shaft mechanism.

9. The electronic device according to claim 8, characterized in that: The first side frame is further provided with an avoidance groove, which penetrates a portion of the surface of the first side frame facing the first accommodating groove and a groove wall of the installation groove, and a portion of the rotating shaft mechanism is located in the avoidance groove.

10. The electronic device according to claim 9, characterized in that: The main body includes a first sub-section and a second sub-section. The first sub-section and the second sub-section are arranged in sequence along the extension direction of the first side frame. At least part of the first sub-section is exposed relative to the avoidance groove. The average thickness of the first sub-section is greater than the average thickness of the second sub-section.

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