WO2018049923A1

WO2018049923A1 - Housing, housing manufacturing method, and electronic device

Info

Publication number: WO2018049923A1
Application number: PCT/CN2017/094266
Authority: WO
Inventors: 许海平
Original assignee: 广东欧珀移动通信有限公司
Priority date: 2016-09-18
Filing date: 2017-07-25
Publication date: 2018-03-22
Also published as: CN106211686B; CN106211686A

Abstract

The present invention relates to the field of electronic devices, and specifically, to a housing, a housing manufacturing method, and an electronic device. The housing comprises: a metal connection portion, located in a gap and connected to housing parts of the metal housing at two sides of the gap. An outer surface of the metal connection portion is depressed relative to the housing parts at the two sides of the gap. A plastic strip is filled in the gap, and covers the outer surface of the metal connection portion. The embodiments of the present invention employ the metal connection portion and the plastic strip to realize a firm connection between the housing parts at the two sides of the gap, achieving enhancement of overall housing strength. Furthermore, the metal connection portion is concealed in the plastic strip, and does not affect the appearance of the housing.

Description

Housing, housing manufacturing method and electronic device

The present invention claims the priority of the prior application entitled "Case, Housing Manufacturing Method, and Electronic Device", filed on September 18, 2016, the disclosure of which is incorporated herein by reference. This.

Technical field

The present invention relates to the field of electronic devices, and in particular to a housing, a method of manufacturing the housing, and an electronic device having the housing.

Background technique

At present, the housing of the electronic device usually comprises a metal outer casing, the metal outer casing is provided with a slit, and the gap is filled with a plastic belt to connect the metal outer shells on both sides of the gap. However, the connection is not strong enough, so that the overall strength of the housing is insufficient. .

Summary of the invention

The present invention provides a housing having a high overall strength. The present invention also provides a method of manufacturing the housing. The present invention also provides an electronic device having the housing.

The invention adopts the following technical solutions:

In one aspect, a housing is provided, including a metal housing, the metal housing is provided with a slit, the metal housing has a metal connecting portion, the metal connecting portion is located in the slot and is connected to the housing portion of the metal housing on both sides of the slot, and the metal connecting portion The outer side surface is recessed with respect to the outer side surface of the housing portion on both sides of the slit; the housing further includes a plastic strip, the plastic strip is filled in the slit, and the plastic strip covers the outer side surface of the metal joint.

In another aspect of the invention, a method of manufacturing a housing is provided, comprising the steps of:

Processing the metal sheet material to obtain a metal shell with a set structure, wherein the metal shell has a slit and a metal connecting portion, the metal connecting portion is located in the slit and is connected to the shell portion of the metal shell on both sides of the slit, and the outer side surface of the metal connecting portion The outer side surfaces of the housing portions on both sides of the slit are recessed.

A plastic material is filled in the slit to form a plastic strip connecting the shell portions on both sides of the slit in the slit.

In still another aspect, an electronic device is provided, the electronic device comprising the housing of any of the above, a slit Corresponding to an antenna signal release area and a non-signal release area of the electronic device; the metal connection portion is located in a non-signal release area in the slot.

DRAWINGS

1 is a front elevational view of a first embodiment of a housing provided by an embodiment of the present invention, in which only a metal housing is shown.

Figure 2 is a rear elevational view of the housing of Figure 1 with only the metal housing shown.

Figure 3 is a cross-sectional view of the housing of Figure 1 taken along the line A-A.

4 is a front elevational view of a second embodiment of a housing provided by an embodiment of the present invention, in which only a metal housing is shown.

Figure 5 is a rear elevational view of the housing of Figure 4 with only the metal housing shown.

Figure 6 is a cross-sectional view of the housing B-B of Figure 4;

Figure 7 is a cross-sectional view taken along line C-C of the housing of Figure 4;

FIG. 8 is a flow chart of a method of manufacturing a housing according to an embodiment of the present invention.

FIG. 9 is a schematic diagram of an electronic device according to an embodiment of the invention.

In the picture:

1: first metal connecting portion; 2, first edge portion; 3: first slit; 4: main body portion; 5: second metal connecting portion; 6: second slit; 7: second edge portion; 51, 52 : sub-metal connection; 8: first plastic strip; 9: second plastic strip; 10: antenna; 11: battery mounting area.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It should also be noted that, for ease of description, only some, but not all, of the structures related to the present invention are shown in the drawings.

Embodiment 1

A housing is provided in an embodiment of the invention. The housing includes a metal outer casing and a plastic strip. The metal casing is a single piece, and the metal casing has a slit and a metal connecting portion, and the metal connecting portion is integrally formed in the metal casing and is located in the slit. The two ends of the metal connecting portion are respectively connected to the housing portions of the metal shell on both sides of the slit, and the outer side surfaces of the metal connecting portions are recessed with respect to the outer side surfaces of the housing portions on both sides of the slit, that is, The outer side surface of the metal connecting portion forms a recess with the housing portions on both sides thereof, and the inner side surface of the metal connecting portion is recessed with respect to the inner side surface of the housing portion on both sides of the slit or flush with the inner side surface of the housing portion on both sides of the slit. The plastic strip is filled in the gap, and the plastic strip covers the outer side of the metal joint.

Thereby, the outer side surface of the metal connecting portion is recessed with respect to the outer side surface of the housing portion on both sides of the slit, so that the plastic strip can cover the recess of the metal connecting portion with respect to the housing portion on both sides of the slit, with the existing electronic device Like the housing, there is no metal connection on the design surface. Further, the housing of the electronic device of the present embodiment achieves a firm connection of the housing portions on both sides of the slot by the metal connecting portion and the plastic strap without affecting the appearance, thereby enhancing the strength of the housing.

The inner side faces of the metal joints are recessed with respect to the inner side faces of the casing portions on both sides of the slit, or are flush with the inner side faces of the casing portions on both sides of the slit.

The metal casing has at least two slits, and metal joints are provided in both slits. A plurality of metal joints in the metal casing include a one-piece metal joint or a plurality of metal joints. The multi-section metal connection includes spaced apart multi-sub-metal connections in the same slot, the one-piece metal connection being a continuous piece. Wherein, the multi-section metal connecting portion may include a two-stage metal connecting portion, a three-section metal connecting portion and the like. A through hole is formed between each of the sub-metal connecting portions of the multi-section metal connecting portion. When processing the plastic belt, the liquid plastic flows through the through holes between the sub-metal joints, so that the injection pressure is balanced, and the plastic protrusion of the appearance surface is avoided. Furthermore, the length of the one-piece metal connection can be made smaller than the length of the two-piece metal connection.

The opposite ends of the metal casing respectively have a slit, and the metal joints are respectively disposed in the two slits, and the metal connection portion in the slit at the first end is a one-stage metal connection portion, and the metal connection in the gap at the second end The part is a two-stage metal connection.

The metal casing has two slits, and metal joints are provided in both slits, the metal joints are continuous one-piece metal joints, the length of the metal joint in one slit and the metal joint in the other gap The length is different.

The slit completely separates the housing portions on both sides.

Further, when the housing is in use, the metal connecting portion is located in a non-signal release region outside the signal release region of the slot, and does not hinder the release of the antenna signal, thereby not affecting the antenna performance. Moreover, the housing further comprises a plastic component (for example, a plastic inner casing), the plastic component is connected to the inner side of the metal casing, and the plastic component and the plastic tape are integrated.

Referring to FIG. 1 to FIG. 3 together, the housing provided in the first embodiment of the present invention includes a main body portion 4, and a first The metal connecting portion 1, the first edge portion 2, the first slit 3, the first plastic strip 8, the second metal connecting portion 5, the second slit 6, the second edge portion 7, and the second plastic strip 9. The first slit 3 and the second slit 6 are respectively located at two ends of the metal casing.

The first edge portion 2 and the second edge portion 7 are respectively located at both ends of the body portion 4, and the first edge portion 2 is spaced apart from the body portion 4 by the first slit 3. The first gap 3 has a first metal connecting portion 1 , and the first metal connecting portion 1 is a one-stage metal connecting portion, and the one-piece metal connecting portion is a continuous member. Figure 3 is a cross-sectional view of the housing of Figure 1 taken along the line A-A. As shown in FIG. 3, the outer side surface of the first metal connecting portion 1 is recessed, and the inner side surface is flush with the inner side surface of the casing portion on both sides of the first slit 3. Alternatively, the inner side surface of the first metal connecting portion 1 may be processed to be recessed with respect to the inner side surface of the housing portion on both sides of the first slit 3. The first slit 3 is filled with a first plastic strip 8. As shown in FIG. 3, the first plastic strip 8 covers the outer side surface of the first metal connecting portion 1. The second edge portion 7 is spaced apart from the body portion 4 by a second slit 6. The second slit 6 has a second metal connecting portion 5, and the second metal connecting portion 5 is a one-piece metal connecting portion. And the length of the second metal connecting portion 5 is larger than the length of the first metal connecting portion 1. As shown in FIG. 3, the outer side surface of the second metal connecting portion 5 is a concave surface, and the inner side surface is flush with the inner side surface of the casing portion on both sides of the second slit 6. Alternatively, the inner side surface of the second metal connecting portion 5 may be processed to be recessed with respect to the inner side surface of the housing portion on both sides of the second slit 6. The second slit 6 is filled with a second plastic strip 9. As shown in FIG. 3, the second plastic strip 9 covers the second metal connecting portion 5.

In this embodiment, reference is made to the schematic view of the housing of Figures 1 and 2. The first edge portion 2 is located above the body portion 4 and has a first gap 3 between the first edge portion 2 and the body portion 4. The first gap 3 has a first metal connection 1 therein. The second edge portion 7 is located below the body portion 4 and has a second slit 6 between the second edge portion 7 and the body portion 4. The second slit 6 has a second metal connecting portion 5 therein. The structure of the first metal connecting portion 1 is different from the structure of the second metal connecting portion 5. Of course, the present invention does not limit the position of the above elements. In other embodiments, the second edge portion 7 may also be located above the body portion 4. Accordingly, the first edge portion 2 may be located below the body portion 4. Likewise, the first slit 3 may also be located below the body portion 4, and the second slit 6 may be located above the body portion 4 or the like.

Of course, the present invention is not limited thereto. In other embodiments, the length of the first metal connecting portion 1 may be greater than the length of the second metal connecting portion 5, or a plurality of metal connecting portions may be disposed in the same slot, as long as It does not affect the release of the antenna signal.

Of course, the present invention is not limited thereto, and in other embodiments, the number and position of the slits may be other settings depending on the type of the electronic device.

Embodiment 2

Referring to FIG. 4 to FIG. 7 together, in the embodiment, the difference from the first embodiment is that the first metal connecting portion 1 is a one-stage metal connecting portion, and the second metal connecting portion 5 is a two-stage metal. Connection. The one-piece metal connection is a continuous piece; the two-section metal connection includes two spaced apart

sub-metal connections

51, 52 located in the same non-signal release region. The length of the one-piece metal connection is less than the length of the two-piece metal connection, wherein the length of the two-section metal connection is the distance between opposite side edges of the two

sub-metal connections

51, 52. Also, the inner side surface of the first metal connecting portion 1 may be recessed with respect to the inner side surface of the housing portion on both sides of the first slit 3. The inner side surface of the first sub-metal connecting portion 51 may also be recessed with respect to the inner side surface of the housing portion on both sides of the second slit 6. And, the inner side surface of the second sub-metal connecting portion 52 may also be recessed with respect to the inner side surface of the housing portion on both sides of the second slit 6.

Specifically, FIG. 6 is a B-B cross-sectional view of the casing of FIG. 4, and FIG. 7 is a C-C cross-sectional view of the casing of FIG. Referring to the cross-sectional views shown in FIGS. 6 and 7, the outer side surface of the first metal connecting portion 1 is recessed with respect to the outer side surface of the housing portion on both sides of the first slit 3, and the inner side surface is opposite to the shell on both sides of the first slit 3. The inner side of the body portion is recessed. The second metal connection portion 5 includes a first sub-metal connection portion 51 and a second sub-metal connection portion 52. As shown in FIG. 6, the outer side surface of the first sub-metal connecting portion 51 is recessed with respect to the outer side surface of the housing portion on both sides of the second slit 6, and the inner side surface is recessed with respect to the inner side surface of the housing portion on both sides of the second slit 6. . As shown in FIG. 7, the outer side surface of the second sub-metal connecting portion 52 is recessed with respect to the outer side surface of the housing portion on both sides of the second slit 6, and the inner side surface is recessed with respect to the inner side surface of the housing portion on both sides of the second slit 6. .

In the technical solution of the embodiment, the metal connecting portion is combined with the plastic belt to realize the firm connection of the housing portions on both sides of the slot, thereby enhancing the strength of the housing. At the same time, the metal connecting portion can be covered by the plastic tape, so that the metal connecting portion does not appear on the outer surface of the casing. The one-piece metal connecting portion in the first embodiment is replaced by the two-stage metal connecting portion, thereby achieving the effect of avoiding the plastic protrusion of the design surface.

In contrast to the first embodiment, the second embodiment can be understood to divide the longer one-piece second metal connecting portion 5 (refer to FIGS. 1 and 2) of the first embodiment into two

sub-metal connecting portions

51, 52.

Of course, the present invention is not limited thereto. In other embodiments, whether the multi-section metal connection portion or the one-piece metal connection portion is selected according to the length of the metal connection portion, that is, all the metal connection portions in the metal outer casing are determined. It can be a one-piece metal connection or a multi-section metal connection.

Referring to FIG. 8, an embodiment of the present invention provides a method of manufacturing a housing, which may include the following operations.

The metal plate is processed to obtain a metal casing with a set structure, wherein the metal casing has a slit and a metal connecting portion, the metal connecting portion is located in the slit, and the metal connecting portion is connected to the casing portion of the metal casing on both sides of the slit, and the metal connection The outer side of the portion is recessed relative to the outer side of the housing portion on either side of the slit.

Thus, on the one hand, the metal sheet is processed to obtain a metal shell of a set structure; and the gap is formed in the gap formed in the metal shell to obtain the above casing. Compared with the current shell processing method, the processing process is simplified and the processing time is saved. On the other hand, the outer side surface of the metal connecting portion is recessed with respect to the outer side surface of the housing portion on both sides of the slit, so that the plastic strip can cover the recess of the metal connecting portion with respect to the housing portion on both sides of the slit, together with the existing electronic device Like the outer casing, there is no metal connection on the surface. Therefore, the solid connection of the casing portions on both sides of the slit can be realized by the metal connecting portion in combination with the plastic belt, thereby achieving the effect of enhancing the overall strength of the casing.

In summary, the manufacturing method of the outer casing of the present invention improves the manufacturing method of the prior art casing, and hides the metal connecting portion in the plastic belt without affecting the performance of the antenna, and realizes both sides of the gap through the metal connecting portion and the plastic belt. A secure connection of the housing parts. At the same time, the metal connection is hidden without removing, which simplifies the processing and shortens the processing time of the housing.

In one embodiment, processing the sheet metal to obtain a metal shell of the set structure includes the following operations.

The metal sheet is processed by a stamping process to obtain a metal shell blank. The metal casing blank has a gap and a primary metal connection. The primary metal connecting portion is located in the slot and is connected to the housing portion of the metal casing blank on both sides of the slot, and the inner side surface of the primary metal connecting portion is flush with the inner side surface of the housing portion on both sides of the slot, and the outer side of the primary metal connecting portion The sides are flush with the outer side of the housing portion on either side of the slit. The primary metal connection may be machined into a one-piece metal connection or may be machined into a multi-section metal connection.

The outer side surface of the primary metal connecting portion is processed into a concave surface to form a metal joint recessed with respect to the outer side surface of the casing portion on both sides of the slit to obtain a metal outer casing.

Illustratively, the outer side surface of the primary metal joint is machined by a numerically controlled machine tool (CNC) to mill the outer side of the primary metal joint into a concave surface, so that the outer side of the primary metal joint is opposite to the shell on both sides of the slit. The outer side of the body portion is recessed, and the inner side surface is inside the housing portion on both sides of the slit The sides are flush. In this way, it is not necessary to mill a part of the inner side of the primary metal connecting portion during processing, which makes the processing process simpler and saves processing time. Of course, in other embodiments, other processes may be used to form the metal casing blank, and other processes may be used to remove a portion of the outer side of the primary metal connection to form the metal connection. Alternatively, in other embodiments, the metal casing having the metal joint may be formed in a one-shot manner by cold heading, that is, the difference in thickness between the metal joint and the casing portion on both sides of the slit is formed by a cold rolling process.

In one embodiment, filling the gap with the plastic material to form a plastic strip connecting the shell portions on both sides of the slit in the slit may include the following operations.

The metal shell is subjected to in-mold molding (for example, by nano-injection molding), a plastic part is molded inside the metal casing, and a plastic strip connecting the shell portions on both sides of the slit is formed at the slit, wherein the plastic strip covers the metal joint The outer side.

In the in-mold injection molding, the inner side of the longer section of the metal connecting portion is thicker in plastic, the plastic in the outer recess is thinner, and there is a pressure difference in the injection molding, so that the one-piece metal connecting portion is easy to be convex, and the plastic surface of the appearance is convex. Causes a bad appearance. The metal connecting portion is designed as a multi-section metal connecting portion to realize inner and outer plastic circulation, so that the injection pressure is balanced, and the plastic protrusion of the appearance surface is avoided. Illustratively, the longer length of the metal connecting portion is the two

sub-metal connecting portions

51, 52, and the intermediate interval is a through hole, so that the inner and outer plastics are circulated, and the injection pressure is balanced to avoid the occurrence of the above-mentioned convex hull.

The housing manufacturing method of this embodiment can be used to mold the mobile phone casings of the first embodiment and the second embodiment.

Referring to FIG. 1 to FIG. 3, when the mobile phone casing of the first embodiment is molded by the molding method of the embodiment, the metal plate material is stamped to form a metal casing blank having a first gap 3 and a second gap 6. Both slits completely separate the housing portions on both sides, and the housing portions on both sides of the slit are connected by a primary metal connection. The two primary metal connecting portions are each a one-stage primary metal connecting portion, the one-piece primary metal connecting portion is a continuous member, and the length of the one-stage primary metal connecting portion located in the second slit 6 is greater than the primary portion located in the first slit 3 The length of the metal joint. Then, a part of the outer side of the two primary metal connecting portions is milled by a numerically controlled machine to form two metal connecting portions recessed with respect to the outer side surfaces of the housing portions on both sides of the slit, that is, forming a one-piece first metal connection The portion 1 and the second metal connecting portion 5, thereby obtaining a metal casing. After that, the metal casing is subjected to in-mold molding, a plastic inner casing is formed inside the metal casing, and a plastic strip is formed in each of the two slits, and the metal joint can be hidden under the plastic belt to obtain the appearance of the outer casing of the mobile phone. The metal connection is not displayed on the top.

Referring to Figures 4 to 7, in the manufacture of the outer casing of the mobile phone of the second embodiment, the metal sheet is subjected to a stamping process to form a metal casing blank. The metal casing blank has a first slit 3 and a second slit 6, both of which completely separate the casing portions on both sides thereof, and the casing portions on both sides of the slit are connected by a primary metal joint. The primary metal connection in the first slot 3 is a one-stage primary metal connection, the one-piece primary metal connection is a continuous piece; the primary metal connection in the second slot 6 is a two-stage primary metal connection, The two-stage primary metal connection includes two spaced apart primary metal connections located in the same non-signal release region. The length of the one-piece primary metal connection is less than the length of the two-stage primary metal connection. Then, a part of the outer side of the two primary metal joints is milled off by a numerically controlled machine tool (CNC), and a part of the inner side of the two primary metal joints is separately milled to form an outer portion of the housing portion with respect to both sides of the slit. The two metal connecting portions are recessed on the side and the inner side, that is, the first metal connecting portion 1 and the two-piece second metal connecting portion 5 are respectively formed. Thereby, a metal casing is obtained. Thereafter, the metal casing is subjected to in-mold molding, a plastic inner casing is formed inside the metal casing, and a plastic tape is formed in each of the two slits, and the plastic tape covers the recess of the corresponding metal connecting portion to obtain a casing of the mobile phone.

Of course, the manufacturing method of the embodiment is applicable to the processing of other mobile phone casings in addition to the mobile phone casings of the first embodiment and the second embodiment. For example, the number and position of the gaps of the metal casing of the mobile phone casing are not limited to the above. In two embodiments, the number of the metal connecting portions in one slot may be multiple, and the plurality of metal connecting portions in the metal casing may include a one-segment metal connecting portion and a two-segment metal connecting portion at the same time, or all of them may be The one-piece metal connection or the two-section metal connection may also be a three-section metal connection or a multi-segment metal connection without affecting the release or reception of the antenna signal. It will be appreciated that the number and location of the primary metal connections therein when forming the metal housing blank can be determined based on the number and location of the metal connections in the design of the handset housing.

The present invention also provides an electronic device having an antenna 10 which is an important wireless device for transmitting and receiving communication signals when the electronic device communicates with the base station. When the electronic device transmits the communication signal, the antenna 10 converts the electrical signal into an electromagnetic wave signal and emits it; at the same time, the received electromagnetic wave signal can be converted into an electrical signal in time and output to a corresponding circuit inside the electronic device. It should be noted that the antenna 10 of different electronic devices is different in design, and the structure and position of the electric wire 10 are not limited in this embodiment. Preferably, the electronic device is an electronic mobile device such as a mobile phone, a tablet computer, a learning machine, or a game machine. More preferably, the housing of the above electronic device is a mobile phone case.

FIG. 9 is a schematic diagram of an electronic device according to a fourth embodiment of the present invention (the antenna position and the battery mounting region 11 are schematically shown), and the electronic device includes the housing of the first embodiment or the second embodiment. As shown in FIG. 9, the arrow indicates the mounting relationship between the housing and the electronic device, that is, the housing is mounted on the back surface of the electronic device (the side having the battery mounting region 11). Wherein, the gap of the metal casing corresponds to the antenna signal release region and the non-signal release region of the electronic device; the metal connection portion is located in the non-signal release region in the slot. As shown in FIG. 9, the first slot 3 corresponds to the antenna 10 located at the first end of the electronic device, and the antenna 10 transmits a signal to the outside of the electronic device through the first slot 3 corresponding to the antenna signal release region. At the same time, the signal propagates to the antenna 10 through the first slot 3 corresponding to the antenna signal release area. Similarly, the second slot 6 corresponds to the antenna 10 at the second end of the electronic device, and the signal transmitted by the antenna 10 propagates to the outside of the electronic device through the second slot 6 corresponding to the antenna signal release region. At the same time, the signal propagates to the antenna 10 through the second slot 6 corresponding to the antenna signal release area.

Both the first metal connection portion 1 and the second metal connection portion 5 correspond to non-signal release regions and do not affect the antenna 10 transmitting or receiving signals.

Thereby, the metal connecting portion is combined with the plastic belt to realize the firm connection of the casing portions on both sides of the slit, thereby achieving the effect of enhancing the overall strength of the casing, and effectively preventing the problem that the casing is broken due to the impact of the electronic device. At the same time, the metal connecting portion is covered by the plastic tape so that the metal connecting portion does not appear on the casing of the electronic device, and the appearance of the electronic device is not affected.

The technical principles of the present invention have been described above in connection with specific embodiments. The descriptions are merely illustrative of the principles of the invention and are not to be construed as limiting the scope of the invention. Based on the explanation herein, those skilled in the art can devise various other embodiments of the present invention without departing from the scope of the invention.

Claims

A casing comprising a metal casing, the metal casing being provided with a slit, wherein

The metal casing has a metal connecting portion, the metal connecting portion is located in the slot and is connected to the casing portion of the metal casing on both sides of the slot, and the outer side surface of the metal connecting portion is opposite to the slot The outer side of the side housing portion is recessed;

The housing further includes a plastic strip filled in the gap, the plastic strip covering an outer side of the metal joint.
The housing of claim 1 wherein:

The inner side surface of the metal connecting portion is recessed with respect to the inner side surface of the housing portion on both sides of the slit.
The housing according to claim 2, wherein

The plastic strip covers an inner side of the metal joint.
The housing of claim 1 wherein:

The inner side surface of the metal connecting portion is flush with the inner side surface of the housing portion on both sides of the slit.
The housing of claim 1 wherein:

The metal connecting portion is a one-piece metal connecting portion or a multi-segment metal connecting portion.
The housing according to claim 5, wherein

The multi-segment metal connection includes a plurality of spaced apart sub-metal connections.
The housing of claim 6 wherein:

A through hole is formed between the plurality of sub-metal connecting portions, and the plastic strip fills the through hole.
The casing according to any one of claims 1 to 7, wherein

The metal casing has at least two slits, and at least one metal joint is provided in both of the slits.
The housing of claim 8 wherein:

The structure of the metal connecting portions in the different slits is different.
The casing according to any one of claims 1 to 7, wherein

The metal casing has two slits, wherein the metal connecting portion in one of the slits is a one-stage metal connecting portion, and the metal connecting portion in the other slit is a two-stage metal connecting portion.
A housing according to claim 10, wherein:

Two of the slits are respectively located at opposite ends of the metal casing.
A housing according to claim 10 or 11, wherein

The length of the one-piece metal connection is less than the length of the two-piece metal connection.
The casing according to any one of claims 1 to 7, wherein

The metal casing has two slits, wherein a length of the metal joint in one of the slits is different from a length of the metal joint in the other slit.
The casing according to any one of claims 1 to 7, wherein

The slit completely separates the housing portions on both sides of the slit.
The housing according to any one of claims 1 to 7, further comprising:

a plastic component connected to the inner side of the metal casing and integrated with the plastic tape.
A method of manufacturing a housing, comprising:

Processing a metal sheet material to obtain a metal shell of a set structure, wherein the metal shell has a slit and a metal connecting portion, the metal connecting portion is located in the slit and is connected to the metal shell on both sides of the slit a housing portion, an outer side surface of the metal connecting portion is recessed with respect to an outer side surface of the housing portion on both sides of the slit;

A plastic material is filled in the slit to form a plastic strip connecting the shell portions on both sides of the slit in the slit.
The method according to claim 16, wherein the metal sheet is processed to obtain a metal casing of a set structure, comprising:

Processing the metal sheet by a stamping process to obtain a metal shell blank, wherein the metal shell blank has a slit and a primary metal joint, the primary metal joint is located in the gap, and is connected to the metal shell blank The inner side surface and the outer side surface of the primary metal connecting portion are flush with the inner side surface and the outer side surface of the metal outer casing blank respectively;

The outer side surface of the primary metal connecting portion is processed into a concave surface to form a metal joint recessed with respect to an outer side surface of the casing portion on both sides of the slit, and the metal outer casing is obtained.
The method of claim 16 wherein said plastic strip covers an outer side of said metal joint.
The method according to claim 16 or 18, wherein the gap is filled with a plastic material to form a plastic strip connecting the shell portions on both sides of the slit in the slit, comprising:

The metal casing is subjected to an in-mold molding process, a plastic component is molded inside the metal casing, and a plastic tape connecting the casing portions on both sides of the slit is formed at the slit.
An electronic device, comprising: the housing according to any one of claims 1 to 15, wherein the slot corresponds to an antenna signal release area and a non-signal release area of the electronic device; In the gap and corresponding to the non-signal release zone.