Mobile phone protection shell capable of eliminating static electricity

Abstract

A mobile phone protection shell capable of eliminating static electricity comprises a shell body and a static electricity eliminating device. The shell comprises a bottom wall and a side wall, the side wall protrudes from the periphery of the bottom wall to one side of the bottom wall, and an accommodating cavity for accommodating a mobile phone is defined by the side wall and the bottom wall; the static electricity eliminating device is installed on the shell and comprises a first conductor, a second conductor, a resistor and an LED lamp, the first conductor and the second conductor are arranged in a spaced mode, the resistor and the LED lamp are connected between the first conductor and the second conductor through a circuit, at least parts of the first conductor and the second conductor are exposed out of the shell, a containing groove is formed in the inner side of the shell, and the LED lamp is arranged in the containing groove. And the resistor and the LED lamp are embedded in the accommodating groove.

Description

Technical Field

[0001] The present application belongs to the technical field of mobile phone accessories, and more specifically, relates to a mobile phone protective case capable of eliminating static electricity. Background Art

[0002] In daily life, especially in the dry seasons of autumn and winter, the human body is prone to generate a large amount of static electricity due to friction between clothes. The instantaneous voltage can be as high as several thousand volts or even tens of thousands of volts. When the human body comes into contact with a conductor, a "discharge" phenomenon will occur, making people feel uncomfortable as if they were electrocuted, and even when the voltage is very high, it will cause strong pain. How to eliminate static electricity on the human body is a major issue that needs to be solved. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a mobile phone protective case that can eliminate static electricity, so as to solve the technical problems existing in the prior art.

[0004] A mobile phone protective case capable of eliminating static electricity comprises: a shell and a static electricity elimination device. The shell comprises a bottom wall and a side wall, the side wall protrudes from the periphery of the bottom wall toward one side of the bottom wall, and the side wall and the bottom wall form a receiving cavity for accommodating a mobile phone; the static electricity elimination device is installed on the shell, and the static electricity elimination device comprises: a first conductor and a second conductor arranged at intervals, and a resistor and an LED lamp connected between the first conductor and the second conductor by a circuit, wherein the first conductor and the second conductor are at least partially exposed to the shell, and a receiving groove is arranged on the inner side of the shell, and the resistor and the LED lamp are embedded in the receiving groove.

[0005] In some embodiments, the LED lamp and the resistor are arranged in series between the first conductor and the second conductor.

[0006] In some embodiments, the static elimination device also includes a flexible circuit board, the resistor and the LED light are arranged on the flexible circuit board, and the flexible circuit board includes a first conductive contact portion for electrically connecting to the first conductor, and a second conductive contact portion for connecting to the second conductor.

[0007] In some embodiments, the flexible circuit board is roughly Z-shaped, including a long strip-shaped main body portion, and a first connecting portion and a second connecting portion respectively connected to the longitudinal ends of the main body portion, the first connecting portion and the second connecting portion respectively extend toward both sides of the main body portion, and the first conductive contact portion and the second conductive contact portion are respectively arranged on the first connecting portion and the second connecting portion.

[0008] In some embodiments, a receiving groove is disposed inside the housing, and the flexible circuit board is embedded in the receiving groove.

[0009] In some embodiments, the conductive circuit of the flexible circuit board, the resistor and the LED lamp are arranged on a surface of the flexible circuit board facing the bottom of the accommodating groove.

[0010] In some embodiments, the shell is provided with a first through hole and a second through hole passing through the inner and outer sides thereof at positions corresponding to the first connecting portion and the second connecting portion, respectively, and the first connecting portion and the second connecting portion extend from the inner side of the shell to the outer side of the shell through the first through hole and the second through hole, respectively.

[0011] In some embodiments, the first conductor and the second conductor are metal parts, and the first conductor and the second conductor are snap-connected to the outside of the housing and are electrically connected to the first conductive contact portion and the second conductive contact portion respectively.

[0012] In some embodiments, the shell includes a back shell for forming the bottom wall and a frame for forming the side wall, the frame is integrally wrapped around the back shell, the inner side of the back shell forms the accommodating groove, the accommodating groove extends across the receiving groove, and the projection of the frame material on the plane where the back shell is located is spaced from the LED lamp.

[0013] In some embodiments, the shell is substantially rectangular, the first conductor is arranged on the outside of the middle of a long side of the shell, and the second conductor is arranged on the outside of a corner of the shell adjacent to the long side.

[0014] In the mobile phone protective case capable of eliminating static electricity provided in the embodiment of the present application, the first conductor exposed to the shell is used to contact the user's body, and the second conductor is used to contact the person or object to be contacted by the user (for example: door handle, faucet, etc.). When the user has static electricity and there is a potential difference between the user and the person or object to be contacted, the circuit between the first conductor and the second conductor will be turned on, and the current will be consumed through the resistor. At the same time, the LED light will be turned on to indicate the static electricity consumption process. When the LED light is no longer on, it means that the static electricity has been completely consumed. Therefore, the user can judge whether the static electricity has been eliminated by the LED light, so that the static electricity elimination process of the mobile phone protective case of the utility model can be intuitively displayed, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1A three-dimensional diagram of a mobile phone protective case capable of eliminating static electricity provided in one embodiment of the present application.

[0017] Figure 2 for Figure 1 A three-dimensional view of the mobile phone protective case capable of eliminating static electricity from another angle.

[0018] Figure 3 for Figure 1 Exploded view of a static-dissipating cell phone case.

[0019] Figure 4 for Figure 1 The circuit connection diagram of the static electricity elimination device of the mobile phone protective case capable of eliminating static electricity is shown.

[0020] Figure 5 for Figure 1 A schematic diagram of a mobile phone case that can eliminate static electricity and remove the circuit board is shown.

[0021] Figure 6 for Figure 5 Schematic diagram from another angle.

[0022] Figure 7 for Figure 2 Schematic diagram of the mobile phone protective case that can eliminate static electricity after removing the conductor.

[0023] Figure 8 for Figure 1 A front view of a static-dissipating mobile phone case is shown.

[0024] Fig. 9 for Figure 8 Schematic diagram of the cross section along AA.

[0025] Fig. 9A for Fig. 9 Magnified view of the circled part.

[0026] Fig.10 for Figure 8 Schematic diagram of the cross section along CC.

[0027] Fig. 10A for Fig.10 Magnified view of the circled part.

[0028] Fig.11 The present invention is a schematic diagram of another embodiment of a circuit board of a static electricity elimination device of a mobile phone protective case capable of eliminating static electricity according to the present application.

[0029] Fig.12 yes Fig.11 Another angle diagram of the circuit board shown. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] Please also read Figures 1 to 6 According to an embodiment of the present application, a mobile phone protective case 100 capable of eliminating static electricity includes a shell 10 and a static electricity elimination device 50 installed on the shell 10. The shell includes a bottom wall 12 and a side wall 14. The bottom wall 12 is in the shape of a flat plate. The side wall 14 protrudes from the periphery of the bottom wall 12 toward one side of the bottom wall 12, and the side wall 14 and the bottom wall 12 together form a receiving cavity 16 for accommodating a mobile phone. The static electricity elimination device 50 is installed on the shell 10. The static electricity elimination device 50 includes: a first conductor 52 and a second conductor 54 arranged at intervals, and a resistor 56 and an LED lamp 58 connected between the first conductor 52 and the second conductor 54 by a circuit. The first conductor 52 and the second conductor 54 are at least partially exposed to the shell 10, and a receiving groove 18 is provided on the inner side of the shell 10 (i.e., a side defining the receiving cavity 16), and the resistor 56 and the LED lamp 58 are embedded in the receiving groove 18.

[0035] The first conductor 52 exposed to the shell 10 is used to contact the user's body, and the second conductor 54 is used to contact the person or object to be contacted by the user (for example: door handle, faucet, etc.). When the user has static electricity and there is a potential difference between the user and the person or object to be contacted, the circuit between the first conductor 52 and the second conductor 54 will be turned on, and the current will be consumed through the resistor. At the same time, the LED light 58 is turned on to indicate the static electricity consumption process. When the LED light 58 is no longer on, it means that the static electricity is completely consumed. Therefore, the user can judge whether the static electricity has been eliminated by the LED light 58, so that the static electricity elimination process of the mobile phone protective case 100 of the utility model can be intuitively displayed, which is convenient to use.

[0036] The side wall 14 of the housing 10 may be provided with a button operation portion, a sound hole, a data line plug hole, etc., and the bottom wall 12 of the housing 10 is provided with a camera opening 120 for exposing the mobile phone camera.

[0037] Optionally, the mobile phone protective case 100 that can eliminate static electricity also has a bracket 60. The bracket 60 is rotatably connected to the outer side of the bottom wall 12 (i.e., the side away from the accommodating chamber 16). The bracket 60 can be rotated between an open position and a closed position, and the opening angle can be adjusted according to the needs of the user. The provision of the bracket 60 is conducive to freeing the hands of the user when using the mobile phone, and is convenient for the user to use the mobile phone for a long time, such as when chasing a TV series. Optionally, a receiving groove 122 is provided on the outer side of the bottom wall 12 of the shell 10, and the bracket 60 is embedded in the receiving groove 122 of the bottom wall 12 when it is folded, so that the overall appearance of the mobile phone protective case 100 is flat and beautiful. Preferably, the shape and size of the receiving groove 122 are adapted to the bracket 60. Optionally, the size of the receiving groove 122 is larger than the size of the bracket 60.

[0038] Optionally, the bracket 60 is ring-shaped and has a magnetic element disposed therein, which can be adsorbed to a magnetic wireless charger so that the mobile phone can be attached to the wireless charger, which is conducive to achieving stable charging and improving charging efficiency.

[0039] Preferably, reference Figure 4 , the LED lamp 58 and the resistor 56 are arranged in series between the first conductor 52 and the second conductor 54. Since the LED lamp 58 and the resistor 56 are connected in series, the current flowing through the LED lamp 58 is equal to the current flowing through the resistor 56, and the brightness of the LED lamp 58 is different due to the different magnitudes of the current flowing through the LED lamp 58. Therefore, the user can intuitively judge the magnitude of the static electricity by the brightness of the LED lamp 58.

[0040] In this embodiment, the static eliminator 50 further includes a flexible circuit board 59. The resistor 56 and the LED lamp 58 are fixedly disposed on the flexible circuit board 59. The flexible circuit board 59 includes a first conductive contact portion 591 for electrically connecting to the first conductor 52, and a second conductive contact portion 592 for connecting to the second conductor 54. The first conductor contact portion 591, the second conductive contact portion 592, the resistor 56 and the LED lamp 58 are electrically connected through the conductive line of the flexible circuit board 59.

[0041] The resistor 56 and the LED lamp 58 are directly connected to the flexible circuit board 59, and are connected to the first conductor 52 and the second conductor 54 through the conductive line, the first conductive contact part 591 and the second conductive contact part 592 of the flexible circuit board 59, thereby realizing the mechanical and circuit connection of the static elimination device. The resistor 56 and the LED lamp 58 are directly installed on the flexible circuit board 59, which is conducive to the pre-assembly and modularization of these components 56, 58, 59. In addition, the flexible circuit board 59 has good bendability and can be well adapted to the structure of the housing 10. When the static elimination device 50 is assembled on the housing 10, it is easy to assemble and has high reliability.

[0042] Specifically, the flexible circuit board 59 is roughly Z-shaped, including a long strip-shaped main body portion 593, and a first connecting portion 595 and a second connecting portion 596 respectively connected to the two longitudinal ends of the main body portion 593, the first connecting portion 595 and the second connecting portion 596 respectively extend toward the opposite sides of the main body portion 593, and the first conductive contact portion 591 and the second conductive contact portion 592 are respectively arranged on the first connecting portion 595 and the second connecting portion 596.

[0043] refer to Figure 5 and Figure 6 Preferably, a receiving groove 19 is provided inside the housing 10, and the flexible circuit board 59 is embedded in the receiving groove 19. The shape and size of the receiving groove 19 are generally adapted to the flexible circuit board 59. The receiving groove 19 is partially provided on the inner side of the bottom wall 12, that is, on the side facing the receiving cavity 16.

[0044] Preferably, the flexible circuit board 59 includes a first surface and a second surface facing each other. The first surface faces the bottom of the receiving groove 19, and the second surface faces the receiving cavity 16. The conductive circuit, the resistor 56, and the LED lamp 58 of the flexible circuit board 59 are arranged on the first surface of the flexible circuit board 59, that is, on the side of the flexible circuit board 59 away from the receiving cavity 16. In this way, it is beneficial to protect the circuit, the resistor 56, and the LED lamp 58 of the static elimination device 50.

[0045] Also refer to Figures 5 to 7The shell 10 is provided with a first through hole 191 and a second through hole 192 penetrating the inner and outer sides thereof at positions corresponding to the first connecting portion 595 and the second connecting portion 596, respectively. The first connecting portion 595 and the second connecting portion 596 of the flexible circuit board 59 extend out from the inner side of the shell 10 through the first through hole 191 and the second through hole 192, respectively, and extend to the outer side of the shell 10.

[0046] Specifically, the first through hole 191 is disposed on the side wall 14 of the housing 10 , and the second through hole 191 is disposed on the bottom wall 12 of the housing 10 .

[0047] The first conductor 52 and the second conductor 54 are metal parts. The first conductor 52 and the second conductor 54 are snap-connected to the outside of the housing 10 and are electrically connected to the first conductive contact portion 591 and the second conductive contact portion 592 respectively.

[0048] Preferably, the housing 10 is substantially rectangular, and the first conductor 52 is disposed on the outer side of a middle portion of a long side of the housing 10 .

[0049] The second conductor 54 is disposed outside a corner of the housing 10. Preferably, the second conductor 54 is disposed outside a corner of the housing 10 adjacent to the long side.

[0050] The shell 10 includes a back shell 11 for forming the bottom wall 12 and a frame 13 for forming the side wall 14. The frame 13 is integrally wrapped around the back shell 11. The inner side of the back shell 11 forms the accommodating groove 19. The accommodating groove 19 extends across the receiving groove 18. The projection of the material of the frame 13 on the surface of the back shell 11 is spaced from the LED lamp 58.

[0051] The material of the back shell 11 may be different from that of the frame 13. Preferably, the back shell 11 is made of plastic with relatively high hardness, which is used to provide reliable structural strength for the entire mobile phone protective case 100 and provide good protection for the back of the mobile phone, while the frame 13 may be made of plastic or rubber with relatively low hardness and high elasticity, which is easy to deform when assembling or removing the mobile phone. Therefore, while facilitating operation, it is also conducive to better wrapping around the mobile phone after the mobile phone is assembled, thereby providing reliable protection when the mobile phone is bumped or dropped.

[0052] The back shell 11 includes a plate-like body 112 and a first protrusion 114 and a second protrusion 116 extending from the body 112. The body 112 is roughly rectangular. The first protrusion 114 and the second protrusion 116 protrude roughly vertically from the edge of the body 112. Preferably, the first protrusion 114 is located at the edge of a long side of the body 112 and extends vertically relative to the plane where the body 112 is located. The first protrusion 114 extends along the long side of the body 112 into a long strip. A first through hole 115 is formed in the middle of the first protrusion 114. The second protrusion 116 is located at a corner of the body 112 and protrudes from the corner edge of the body 112. The second protrusion 1146 extends along the corner edge of the body 112 in a bent shape.

[0053] Preferably, the inner surface of the body 112 constitutes the inner surface of the bottom wall 12 of the housing 10. The outer surface of the body 112 constitutes the outer surface of the bottom wall 12 of the housing 10. The inner surface of the body 112 defines the above-mentioned receiving groove 18 for receiving the resistor 56 and the LED lamp 58, the receiving groove 19 for receiving the flexible circuit board 59, and the second through hole 192 for the second connecting portion 596 of the flexible circuit board 59 to pass through. The middle part of the outer surface of the body 112 defines a receiving groove 122 for receiving the bracket 60. The camera opening 120 is also formed on the body 112 near one corner thereof.

[0054] The frame 13 is roughly in the shape of a hollow rectangular ring, with an opening formed in the middle. The outline of the frame 13 is roughly adapted to the outer outline of the body 112. The frame 13 extends circumferentially into a closed shape, covering the periphery of the back shell 11. The width of the frame 13 in a direction perpendicular to the body 112 of the back shell 11 is greater than the thickness of the body 112, so that the part exceeding the body 112 forms the side wall 14 of the shell 10. The frame 13 has openings formed at its long sides corresponding to multiple buttons of the mobile phone, and a silicone member 15 is embedded in the opening to constitute the button operation part of the mobile phone protective shell 100.

[0055] Preferably, a groove 137 is formed on the outer side of the wall portion of the frame 13 corresponding to the first protrusion 114 of the back shell 11, the first protrusion 114 matches the contour of the groove 137, and the first protrusion 114 is located at the bottom of the groove 137. The wall portion of the frame 13 and the first protrusion 114 jointly define a first clamping groove 138 at the groove 137, and the first conductor 54 is clamped in the first clamping groove 138. The bottom of the first clamping groove 138 forms a second through hole 139 for the flexible circuit board 59 to pass through. The second through hole 139 is aligned with the first through hole 115 of the back shell 11 and together constitutes a first through hole 191 for the first connecting portion 595 of the flexible circuit board 59 to pass through.

[0056] The frame 13 forms a ring body 132 corresponding to the camera opening of the back shell 11. The ring body 132 is located on the outer surface of the back shell 11 and faces the opening in the middle of the frame. The contour and size of the ring body 132 are substantially consistent with the camera opening 15 of the back shell 11, and the opening of the ring body 132 is aligned with the camera opening 15. The corner wall portion of the frame 13 corresponding to the second protrusion 116 of the back shell 11 is located on the inner side of the second protrusion 116, that is, the second protrusion 116 is located on the outer side of the wall portion. The frame 13 is also integrally formed with a stop rib 134, and a window 135 is formed between the stop rib 134 and the corner wall portion. The stop rib 134 is located on the outer side of the second protrusion 116 of the back shell 11, and the second protrusion 116 of the back shell 11 is exposed from the window 135. Preferably, the wall portions of the frame 13 on both sides of the second protrusion 116 in the circumferential direction are relatively higher than the edge of the second protrusion 116 , and these wall portions and the stop ribs 134 together form a second slot 136 , and the second conductor 54 is clamped in the first slot 136 .

[0057] Also refer to Figures 8 to 10A The first connection portion 595 of the flexible circuit board 59 passes through the first through hole 191 and extends into the first slot 138, and the first conductive contact portion 591 contacts and electrically connects with the first conductor 52. The second connection portion 596 of the flexible circuit board 59 passes through the second through hole 192 and extends into the second slot 136, and the second conductive contact portion 592 contacts and electrically connects with the second conductor 54 disposed in the second slot 136.

[0058] Preferably, the frame 13 is integrally formed with the back shell 11 by in-mold injection. The back shell 11 is preferably made of a light-transmitting or semi-light-transmitting material, and the light emitted by the LED lamp 58 when turned on penetrates the back shell 11 and is visible outside the housing 10 .

[0059] refer to Fig.11 and Fig.12 , shown is a schematic diagram of a flexible circuit board 59 of a static elimination device of a mobile phone protective case that can eliminate static electricity according to an embodiment of the present application before assembly. As shown in the figure, the first connecting portion 595 and the second connecting portion 596 are both straight strips before installation and are not bent. However, during assembly, the bendability of the flexible circuit board 59 can be used to bend the first connecting portion 595 and the second connecting portion 506 so that they can pass through the first through-hole 191 and the second through-hole respectively and connect with the first conductor 52 and the second conductor. It can be understood that since the flexible circuit board is flexible, it can be adaptively bent according to the shape and structure of the shell during assembly, so its shape can be flexibly set and is not limited to the examples given in the embodiments of the present application.

[0060] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A mobile phone protective case capable of eliminating static electricity, characterized in that: include: The housing comprises a bottom wall and a side wall, wherein the side wall protrudes from the periphery of the bottom wall toward one side of the bottom wall, and the side wall and the bottom wall form a receiving cavity for receiving a mobile phone; A static eliminator is installed on the housing, and comprises: a first conductor and a second conductor arranged at intervals, and a resistor and an LED lamp connected between the first conductor and the second conductor by a circuit. The first conductor and the second conductor are at least partially exposed outside the shell, a receiving groove is provided on the inner side of the shell, and the resistor and the LED lamp are embedded in the receiving groove.

2. The mobile phone protective case capable of eliminating static electricity as claimed in claim 1, characterized in that: The LED lamp and the resistor are connected in series between the first conductor and the second conductor.

3. The mobile phone protective case capable of eliminating static electricity as claimed in claim 2, characterized in that: The static elimination device also includes a flexible circuit board, the resistor and the LED lamp are arranged on the flexible circuit board, and the flexible circuit board includes a first conductive contact portion for electrically connecting to the first conductor, and a second conductive contact portion for connecting to the second conductor.

4. The mobile phone protective case capable of eliminating static electricity as claimed in claim 3, characterized in that: The flexible circuit board is roughly Z-shaped, including a long strip-shaped main body portion, and a first connecting portion and a second connecting portion respectively connected to the two longitudinal ends of the main body portion, the first connecting portion and the second connecting portion respectively extend toward the two sides of the main body portion, and the first conductive contact portion and the second conductive contact portion are respectively arranged on the first connecting portion and the second connecting portion.

5. The mobile phone protective case capable of eliminating static electricity as claimed in claim 4, characterized in that: An accommodating groove is arranged inside the shell, and the flexible circuit board is embedded in the accommodating groove.

6. The mobile phone protective case capable of eliminating static electricity as claimed in claim 5, characterized in that: The conductive circuit of the flexible circuit board, the resistor and the LED lamp are arranged on the surface of the flexible circuit board facing the bottom of the accommodating groove.

7. The mobile phone protective case capable of eliminating static electricity as claimed in claim 4, characterized in that: The shell is provided with a first through hole and a second through hole passing through the inner and outer sides thereof at positions corresponding to the first connecting part and the second connecting part, respectively. The first connecting part and the second connecting part extend from the inner side of the shell to the outer side of the shell through the first through hole and the second through hole respectively.

8. The mobile phone protective case capable of eliminating static electricity as claimed in claim 7, characterized in that: The first conductor and the second conductor are metal parts, and the first conductor and the second conductor are snap-connected to the outside of the shell and are electrically connected to the first conductive contact portion and the second conductive contact portion respectively.

9. The mobile phone protective case capable of eliminating static electricity according to any one of claims 1 to 8, characterized in that: The shell includes a back shell for forming the bottom wall and a frame for forming the side wall. The frame is integrally wrapped around the back shell. A receiving groove is formed on the inner side of the back shell. The receiving groove extends across the receiving groove. The projection of the frame material on the plane where the back shell is located is spaced from the LED lamp.

10. The mobile phone protective case capable of eliminating static electricity as claimed in claim 1, characterized in that: The shell is roughly rectangular, the first conductor is arranged on the outside of the middle of a long side of the shell, and the second conductor is arranged on the outside of a corner of the shell adjacent to the long side.

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