Patent ID: 12212038

DESCRIPTION OF REFERENCE NUMERALS IN FIG.1TO FIG.11

1: middle frame;11: mounting cavity;111: upper cavity body;112: middle cavity body;113: accommodating groove;114: slot;115: limiting protrusion;116: avoidance space;12: middle plate; and13: bezel;2: antenna board;21: first end;22: second end;23: second convex portion; and24: baffle plate;3: fastener;31: fastening plate;311: guiding surface;32: first convex portion;33: stopper; and34: limiting block;4: metal elastomer;51: positioning hole; and52: positioning protrusion;6: operation portion; and7: battery compartment.

DESCRIPTION OF EMBODIMENTS

Embodiments of the present invention provide an electronic device. The electronic device may be a terminal product, such as a mobile phone, a tablet computer, a wearable device, an in-vehicle device, an augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) device, a notebook computer, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a netbook, or a personal digital assistant (personal digital assistant, PDA). A specific type of the electronic device is not limited in the embodiments of this application.

The electronic device includes a screen, a rear cover, and a middle frame. The middle frame is located between the screen and the rear cover. As shown inFIG.1, a middle frame1of the electronic device includes a middle plate12and a bezel13. The bezel13circumferentially surrounds an outer edge of the middle plate12. A battery compartment7is provided between the middle plate12and the rear cover. The battery compartment7is configured to house a battery for supplying power to the electronic device. The bezel13is provided with a mounting cavity11. A depth direction of the mounting cavity11is arranged along a thickness direction of the electronic device. The mounting cavity11is provided on an end face on a rear side of the middle frame1(“rear side” specifically refers to a side facing the rear cover). The mounting cavity11is located outside the battery compartment7and is configured to mount an antenna board2of the electronic device.

As electronic devices are provided with increasing functions and larger screens, the electronic devices consume power faster. To ensure a battery life for the electronic devices, a larger battery is preferred. Correspondingly, a larger space is also preferred for the battery compartment7. Therefore, when the electronic devices have a same volume, the middle frame1is located in a limited space outside the battery compartment7, that is, the bezel13has a limited width, and an arrangement space of the mounting cavity11is limited. As a result, when the antenna board2is mounted in the mounting cavity11, an operation space is limited, and a mounting operation is inconvenient. Therefore, in the embodiments of this application, the antenna board2is fastened in the mounting cavity11by using a fastener3. This can ensure mounting stability of the antenna board2while simplifying the mounting operation, and can further avoid damage to the middle frame1and the battery compartment7in a mounting process.

In the embodiments of this application, as shown inFIG.2, “upper” refers to a side facing an opening along the depth direction of the mounting cavity11, and correspondingly “lower” refers to a side facing the inside of the mounting cavity11along the depth direction of the mounting cavity11.

As shown inFIG.2andFIG.3, inner walls of the mounting cavity11each are provided with a limiting protrusion115. Two opposite sidewalls of the mounting cavity11along a width direction inwardly protrude to form the limiting protrusions115, respectively. A spacing between the limiting protrusions115provided on the two sidewalls is less than a width of the fastener3and greater than a width of the antenna board2that corresponds to a location here. The fastener3can be clamped between an upper end face of the antenna board2and the limiting protrusions115. In this case, the limiting protrusions115are located above the fastener3and restrict the fastener3from moving upward, and the limiting protrusions115form a limiting portion for restricting the fastener3from moving upward.

During mounting, the antenna board2can directly pass through a gap between the two limiting protrusions115and enter a mounting groove. Then, the fastener3is inserted against the upper end face of the antenna board2between the upper end face of the antenna board2and the limiting protrusions115. The operations are convenient. The limiting protrusions115are used to limit the antenna board2from two sides along the width direction. This can ensure stability, so that a more balanced acting force is applied to the fastener3and the limiting is more stable.

Specific locations for disposing the limiting protrusions115are not limited. As shown inFIG.2, the limiting protrusions115are located at one end of the mounting cavity11, or the limiting protrusions115may be disposed at middle locations in a length direction of the mounting cavity11. This is not specifically limited.

Surfaces of the limiting protrusions115present smooth structures, to avoid damage to the antenna board2caused by scraping the antenna board2during mounting. Further, an end of the fastener3is further provided with a guiding surface311. When the fastener3is mounted, the fastener3is inserted between the upper end face of the antenna board2and the limiting protrusions115. The guiding surface311can avoid abrasion during insertion. The guiding surface311may be either an arc surface or an inclined surface.

Certainly, in some embodiments, a limiting groove (not shown in the figure) may be further provided on an inner wall of the mounting cavity, to form the limiting portion for restricting the fastener3from moving upward. After the antenna board2is mounted in the mounting cavity11, the fastener3is inserted into the limiting groove. In this case, the fastener3can abut against the upper end face of the antenna board2, and an upper groove wall of the limiting groove can restrict the fastener3from moving upward, thereby ensuring location stability of the antenna board2. Specifically, the limiting groove may be disposed on each of the two sidewalls of the mounting cavity11along the width direction, or may be disposed on an inner wall at one end of the mounting cavity11. The limiting groove is used to limit the fastener3, and the limiting groove does not occupy a space in the mounting cavity11, to facilitate the mounting operation of the antenna board2.

As shown inFIG.2andFIG.3, a slot114is further disposed on an inner wall of the mounting cavity11. The slot114is disposed at one end of the mounting cavity11. The antenna board2is a strip-shaped structure. Two ends of the antenna board2along its length direction are respectively a first end21and a second end22. During mounting, the first end21can be inserted into the slot114, and an upper sidewall of the slot114can limit the first end21, to prevent the first end21from moving upward along the depth direction of the mounting cavity11. The fastener3can be clamped between the upper end face of the antenna board2and the limiting protrusions115. In this case, the limiting protrusions115are located above the fastener3and restrict the fastener3from moving upward, and the fastener3restricts the antenna board2from moving upward. The antenna board2is limited by using both the slot114and the fastener3, to prevent the antenna board2from moving upward, and further ensure that the antenna board2is stably located in the mounting cavity11.

As shown inFIG.3, a lower end face of the antenna board2is further provided with a metal elastomer4. The metal elastomer4can be clamped between the antenna board2and the middle frame1and is configured to implement electrical connection. A bottom of the mounting cavity11is further provided with an accommodating groove113. After the antenna board2is mounted in the mounting cavity11, the metal elastomer4can be located in the accommodating groove113, the limiting protrusions115can be pressed against the antenna board2from above, the antenna board2downwardly compresses the metal elastomer4, and the metal elastomer4in a compressed state can provide the antenna board2with an upward elastic support force. In other words, in a mounting state, the fastener3and the metal elastomer4can respectively act on the antenna board2from the end faces on upper and lower sides, so that a location of the antenna board2is stable. In addition, as the metal elastomer4can provide an elastic acting force to the antenna board2, a case of crushing the antenna board2is avoided while stability is ensured, and further precision requirements on the limiting protrusions115and the fastener3can be reduced.

The antenna board2mounted in the mounting cavity11can be fastened by using the fastener3and the limiting protrusions115. The limiting protrusions115are fixedly provided on the inner walls of the mounting cavity11. The limiting protrusions115and the mounting cavity11are integrally formed, or may be fastened by soldering or in another manner before factory delivery. During specific mounting, after the antenna board2is mounted in the mounting cavity11, it is only required to insert the fastener3between the antenna board2and the mounting cavity11, without using a large complex operation tool (such as a screwdriver). The mounting operation can be simplified, and no damage is caused to the inner walls of the mounting cavity11and even the adjacent battery compartment7. A quantity of the fasteners3is not limited. Specifically, the antenna board2may be limited by using two fasteners3, or the antenna board2may be limited by using one fastener3. Specifically, the quantity of the fasteners3may be set based on a length of the antenna board, a length of each fastener, and the like.

In the embodiments of this application, alternatively, no slot114may be disposed in the mounting cavity11, and the antenna board2may be fastened only by using the fastener3and the limiting portion (the limiting protrusions115or the limiting groove). When the fastener3and the slot114are used to limit the antenna board2, only one fastener3needs to be disposed to ensure mounting stability of the antenna board2and to further simplify an overall structure while simplifying the mounting operation.

The mounting cavity11is inwardly provided with the limiting protrusions115respectively on the two opposite sidewalls along the width direction, the spacing between the two limiting protrusions115is less than the width of the fastener3and greater than the width of the antenna board2that corresponds to a location here, thereby forming the limiting portion above. During mounting, the antenna board2can directly pass through the gap between the two limiting protrusions115and enter the mounting groove. Then, the fastener3is inserted against the upper end face of the antenna board2between the upper end face of the antenna board2and the limiting protrusions115. The operations are convenient. The limiting protrusions115are used to limit the antenna board2from the two sides along the width direction. This can ensure stability, so that a more balanced acting force is applied to the fastener3and the limiting is more stable.

As shown inFIG.2, the space in the mounting cavity11sequentially includes an upper cavity body111and a middle cavity body112from outside in. A length of the middle cavity body112adapts to the length of the antenna board2. The middle cavity body112is provided with the foregoing slot114at one end along its own length direction. The upper cavity body111is provided with the limiting protrusions115. The middle cavity body112is configured to accommodate the antenna board2. The upper cavity body111is located above the middle cavity body112. In addition, the upper cavity body111outwardly extends relative to the middle cavity body112by one segment at one end away from the slot114. This extending portion forms an avoidance space. A bottom of the middle cavity body112is provided with the accommodating groove113.

To ensure location stability for the antenna board2after the antenna board2is mounted in the middle cavity body112, the length of the middle cavity body112is not much greater than the length of the antenna board2. Therefore, to ensure that the antenna board2can be smoothly mounted in the middle cavity body112and fit into the slot114, the antenna board2inclinedly enters the mounting cavity11during mounting. Specifically, the first end21downwardly enters the middle cavity body112of the mounting cavity11and reaches an opening location of the slot114. In this case, the second end22is inclined upward and located in the avoidance space of the upper cavity body111, and then the antenna board2is pushed, so that the first end21is inserted into the slot114. At this time, the antenna board2is still inclined and the second end22is located in the upper cavity body111. Afterwards, the second end22is pushed downward, so that the second end22fully enters the middle cavity body112. The metal elastomer4on the lower end face of the antenna board2can just fall into the accommodating groove113. Subsequently, the fastener3is mounted. Disposing the avoidance space116facilitates the mounting operation of the antenna board2.

As shown inFIG.3toFIG.5, a first convex portion32upwardly protrudes from the fastener3, the first convex portion32forms a first limiting structure, a second convex portion23upwardly protrudes from the upper end face of the antenna board2, and the second convex portion23forms a second limiting structure. In the mounting state, the first convex portion32is located between the second convex portion23and the limiting protrusions115. In other words, the second convex portion23and the limiting protrusions115can tightly clamp the first convex portion32respectively from both sides along the length direction. Such arrangement can restrict the first convex portion32from moving towards both sides along the length direction. A case that is caused by shaking of the electronic device and the like and in which the fastener3slides relative to the limiting protrusions115along the length direction of the mounting cavity11and is detached from the limiting portion can be avoided in a use process. This can ensure that the fastener3can be stably clamped between the limiting portion and the upper end face of the antenna board2, and further ensure that the fastener3has a stable effect on the antenna board2.

In other words, the first limiting structure is provided on the fastener3, and the second limiting structure is provided on the antenna board2. In the mounting state, the two limiting structures cooperate with each other for limiting, to restrict the fastener3from moving along the length direction of the mounting cavity11, thereby ensuring stability of the fastener3.

Further, as shown inFIG.4, the fastener3includes a fastening plate31. The fastening plate31partially arches upward, and an arched portion forms the first convex portion32protruding upward. Certainly, the first convex portion32may be formed by partially bending the fastening plate31or formed by machining. Alternatively, the fastening plate31may be provided as a flat plate structure, and a convex structure may be fastened on an upper end face at one end of the fastening plate31that faces the first convex portion32, to form the first convex portion32. When the first convex portion32is formed by the partial arching, the overall structure can be simplified and an overall weight can be reduced.

In the embodiments of this application, the fastener3is a plastic member. The fastener3may be integrally injection-molded, may be provided as a metal member, or the like. The integrally injection-molded plastic member can simplify the overall structure and a processing process.

As shown inFIG.3andFIG.4, an end of the first convex portion32is further provided with a stopper33. The stopper33is configured to abut against the second convex portion23. In the mounting state, a lower end of the stopper33can abut against the upper end face of the antenna board2, to avoid a case that a gap exists between the lower end of the stopper33and the upper end face of the antenna board2and limiting cannot be implemented due to entry of the second convex portion23into the gap when the second convex portion23abuts against the stopper33. In addition, an upper end of the stopper33is further provided with a limiting block34. The limiting block34is disposed on a side that faces the second convex portion23. When the second convex portion23abuts against the stopper33, the limiting block34can limit an abutment location of the second convex portion23from above, so as to limit the second convex portion23to between the upper end face of the antenna board2and the limiting block34, thereby ensuring a stable limiting effect.

As shown inFIG.3andFIG.4, the fastener3is further provided with an operation portion6. The operation portion6is fastened to the fastener3, and the operation portion6has a long length. During mounting, the operation portion6is operated to place the fastener3into the mounting cavity11, and the operation portion6is pushed, so that the fastener3is inserted between the upper end face of the antenna board2and the limiting protrusions115. The operations are convenient. The operation portion6extends out of the mounting cavity11due to its long length. In this way, a sufficient space for manual operations is provided. Specifically, the operation portion6is detachable from the fastener3. Therefore, after the mounting is completed, the operation portion6may be detached from the fastener3and then removed, to avoid impact of the operation portion6on subsequent mounting.

Specifically, a manner of connection between the fastener3and the operation portion6is not limited in the embodiments of this application. For example, the fastener3may be detachably connected to the operation portion6by using threads or the like, or the fastener3and the operation portion6may be provided as an integral structure, while connection strength at a connection joint between the fastener3and the operation portion6is reduced (for example, a cross-sectional area of the connection joint is reduced). After mounting of the fastener3is completed, the connection between the operation portion6and the fastener3may be broken directly in a manner such as rotating or bending the operation portion6relative to the fastener3, and then the operation portion6can be removed. The operations are convenient.

As a mounting space is small and a volume of the fastener3is also small, operations are inconvenient if a mounting person holds the fastener3and inserts the fastener3between the upper end face of the antenna board2and the limiting protrusions115only by hands. In contrast, when the mounting is performed by using the operation portion6, operations for picking, placing, and mounting the fastener3are convenient.

A structure of the second convex portion23is not limited. To further prevent the second convex portion23from entering the gap between the lower end of the stopper33and the upper end face of the antenna board2, the second convex portion23may be a bump fixedly provided on the upper end face of the antenna board2. The bump may have a specific height, for example, a top end of the bump is substantially corresponding to a location at or above the middle of the stopper33and is below the limiting block34. Alternatively, as shown inFIG.3andFIG.5, the upper end face of the antenna board2is further fixedly provided with a baffle plate24, and the baffle plate24is upwardly bent towards one end of the first convex portion32to form the second convex portion23. The second convex portion23is a structure tilted on the upper end face of the antenna board2. The second convex portion23has a specific height to ensure that the second convex portion23can abut against a middle location of the stopper33. This further ensures that the second convex portion23does not enter the gap between the lower end of the stopper33and the upper end face of the antenna board2, thereby ensuring a stable limiting effect. When the second convex portion23is formed by bending the baffle plate24, the overall structure and a molding process can be further simplified.

The connection and fastening between the bump and the upper end face of the antenna board2and between the baffle plate24and the upper end face of the antenna board2are completed outside the mounting cavity11. Therefore, the connection and fastening between the bump and the upper end face of the antenna board2and between the baffle plate24and the upper end face of the antenna board2are not limited, for example, the fastening may be implemented by soldering or a fastener.

A specific mounting process of the antenna board2is shown inFIG.6toFIG.9. InFIG.6, neither the antenna board2nor the fastener3is mounted. As shown inFIG.7, the antenna board2is first mounted in the middle cavity body112of the mounting cavity11. Then, as shown inFIG.8, the fastening plate31of the fastener3is inserted between the upper end face of the antenna board2and the limiting protrusions115by using the operation portion6, the first convex portion32is located between the second convex portion23and the limiting protrusions115, and a location of the antenna board2is stable. Finally, the operation portion6is removed. A final product structure is shown inFIG.9.

In the embodiments of this application, a specific structure of the fastener is not limited.FIG.10andFIG.11show a fastener3in another embodiment. The fastener3is provided with a positioning protrusion52. The positioning protrusion52forms the first limiting structure. The antenna board2is provided with a positioning hole51. The positioning hole51forms the second limiting structure. After mounting, when the fastener3is clamped between the limiting portion and the upper end face of the antenna board2, the positioning protrusion52can be inserted into the positioning hole51, thereby limiting the fastener3and the antenna board2along the length direction. Cooperation between the positioning protrusion52and the positioning hole52is similar to the cooperation between the first convex portion32and the second convex portion23, and detachment between the fastener3and the limiting protrusions115that is caused by location movement of the fastener3can be prevented. When the positioning hole51cooperates with the positioning protrusion52to implement positioning, the overall structure can be simplified while a stable limiting effect can be ensured.

Specifically, a specific structure of the positioning protrusion52is not limited. For example, a protrusion structure may be formed by downwardly stamping the fastener3, or a protrusion structure may be integrally formed or additionally fastened on a lower end face of the fastener3. Certainly, in the embodiments of this application, alternatively, the fastener3may be provided with a positioning hole51, and the upper end face of the antenna board2may be provided with a positioning protrusion52. After the fastener3is mounted, the positioning protrusion52can be inserted into the positioning hole51to implement positioning cooperation.

After the positioning protrusion52is inserted into the positioning hole51, a location of the fastener3and that of the antenna board2are relatively fixed along the length direction. Since the antenna board2is mounted in the middle cavity body112, the antenna board2has a stable location along its length direction. Therefore, when the relative locations of the fastener3and the antenna board2are fixed, it can be ensured that the fastening plate31is not detached from the limiting protrusions115due to location movement.

The operation portion6obtained in the foregoing embodiment has a long length. After the fastener3is mounted, the operation portion6partially extends out of the mounting cavity11. The operation portion6is detachable from the fastener3. After the mounting is completed, the operation portion6can be removed.FIG.10andFIG.11show an operation portion6in another embodiment. After the fastener3is mounted, the operation portion6as a whole is located in the mounting cavity11, and does not extend out of the mounting cavity11. Therefore, the operation portion6does not affect subsequent mounting or use. In other words, the operation portion6does not need to be removed after the mounting is completed. Specifically, during mounting, a mounting person may clamp the operation portion6by using tweezers, a clamp, or the like, and act on the operation portion6from the outside of the mounting cavity11, so that the fastener3is inserted between the antenna board2and the limiting protrusions115. The operations are convenient. Specifically, the operation portion6may be formed by bending an end of the fastener3, or the operation portion6may be fastened to the fastener3by soldering or the like.

In this specification, principles and implementations of the present invention are described by using specific examples. The descriptions of the foregoing embodiments are merely intended to help understand the method and the core idea of the present invention. It should be noted that, a person of ordinary skill in the art can further make some improvements and modifications to the present invention without departing from the principles of the present invention, and the improvements and modifications shall fall within the protection scope of the present invention.