Electronic equipment

Abstract

The utility model provides electronic equipment which comprises a middle frame, a first key bolt and a second key bolt are installed on the middle frame, and a first installation gap and a second installation gap are formed between the first key bolt and the middle frame and between the second key bolt and the middle frame. The first key hanging lug is inserted into the first mounting gap; the second key hanging lug is inserted into the second mounting gap; the second key hanging lug is inserted into the second mounting gap; the key body is connected with the first key hanging lug and the second key hanging lug, and the first key hanging lug and the second key hanging lug are made of soft rubber materials. According to the electronic equipment, the problems of cracking of the key hanging lug and falling off of the key can be reduced, the space occupied by the key can be reduced, and small-space key design is achieved.

Description

Technical Field

[0001] The present application relates to the field of electronic technology, and in particular to an electronic device. Background Art

[0002] With the continuous development of technology, electronic devices such as mobile phones, tablets and computers have been widely used. Electronic devices generally include buttons such as power buttons and volume buttons for users to control the power and volume of electronic devices. At present, as people's requirements for the battery life of electronic devices continue to increase, the capacity and volume of electronic device batteries continue to increase. At the same time, various buttons are miniaturized, and small space button designs are more common.

[0003] At present, the buttons of electronic devices are generally made of hard plastic, which has the following main problems: First, the thickness of the ear of the hard plastic button is relatively large, which is contrary to the current trend of small space buttons. Second, for electronic devices with curved screens, the UV (Ultraviolet Rays) glue introduced by the curved screen protective film will dissolve the hard plastic, causing the buttons to fall off. Third, there is a risk of cracking of hard plastic after long-term use. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides an electronic device that can reduce the problems of key hook cracking and key falling off, and can reduce the space occupied by the keys to achieve a small space key design.

[0005] In a first aspect, the present application provides an electronic device, including:

[0006] A middle frame, on which a first key latch and a second key latch are mounted, wherein the first key latch and the second key latch form a first installation gap and a second installation gap with the middle frame;

[0007] a first button hanging ear, wherein the first button hanging ear is inserted into the first installation gap;

[0008] a second button hanging ear, wherein the second button hanging ear is inserted into the second installation gap;

[0009] A button body, wherein the button body is connected to the first button hanging ear and the second button hanging ear, and the first button hanging ear and the second button hanging ear are made of soft rubber material.

[0010] According to the first aspect, the hanging ears of the electronic device buttons of the present application are made of soft rubber material, and the installation and fixation of the buttons are achieved by inserting the hanging ears into the button pins, thereby completely solving the problem of cracking of the hard rubber hanging ears. Especially in the case of limited space, the thickness of the hanging ears can be reduced by more than 1 / 3 compared with the thickness of the hard rubber hanging ears, and the saved space can be used to increase the battery capacity and improve the battery life of the device; and because the chemical resistance of the soft rubber is better than that of hard rubber materials such as PC / PC+GF, the problem of UV glue dissolving hard rubber introduced by the 3D curved screen protective film can be optimized or solved, thereby reducing the problem of buttons falling off in the market.

[0011] According to the first aspect, or any implementation of the first aspect above, the first key hanging ear and the second key hanging ear are integrally formed with the key body, so that the structure is simple and the assembly is easy.

[0012] According to the first aspect, or any implementation of the first aspect above, the key body includes a first key body and a second key body, the first key body and the second key body are connected, and the first key hanging ear and the second key hanging ear are connected to the second key body. This has a simple structure and is easy to assemble.

[0013] According to the first aspect, or any implementation of the first aspect above, the first button hanging ear and the second button hanging ear are integrally formed with or connected and fixed to the second button body, so that the structure is simple and the assembly is easy.

[0014] According to the first aspect, or any implementation of the first aspect above, the first key body is made of hard rubber material, and the second key body is made of soft rubber material, which can reduce the problem of key falling off.

[0015] According to the first aspect, or any implementation of the first aspect above, the first key body and the second key body are made of hard plastic material, which is simple in structure and easy to assemble.

[0016] According to the first aspect, or any implementation of the first aspect above, the first key body is made of metal or alloy material, and the second key body is made of soft rubber material. This has a simple structure and is easy to assemble.

[0017] According to the first aspect, or any implementation of the first aspect above, the first key body and the second key body are connected by glue dispensing, so that the structure is simple and the assembly is easy.

[0018] According to the first aspect, or any implementation of the first aspect above, the key circuit board and a switch on the key circuit board are also included; a conductive base is formed on the key body, and the conductive base is in contact with the switch. This has a simple structure and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the structure of an electronic device shown as an example;

[0020] Figure 2 is a schematic diagram showing the structure of a current key by way of example;

[0021] Figure 3 is a schematic diagram showing the structure of another type of current key;

[0022] Figure 4 A schematic diagram of the structure of a button provided in an embodiment of the present application;

[0023] Figure 5 A schematic diagram of the structure of another key provided in an embodiment of the present application;

[0024] Figure 6 A schematic diagram of the structure of another key provided in an embodiment of the present application;

[0025] Figure 7 A schematic diagram of the structure of another key provided in an embodiment of the present application. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The term "and / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

[0028] The terms "first" and "second" in the description and claims of the embodiments of the present application are used to distinguish different objects rather than to describe a specific order of objects. For example, a first target object and a second target object are used to distinguish different target objects rather than to describe a specific order of target objects.

[0029] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0030] In the description of the embodiments of the present application, unless otherwise specified, the meaning of "multiple" refers to two or more than two. For example, multiple processing units refer to two or more processing units; multiple systems refer to two or more systems.

[0031] The embodiment of the present application provides an electronic device, which may be a mobile phone, a tablet computer, a personal digital assistant (PDA), a car computer, a personal computer (PC), or other electronic devices. The embodiment of the present application does not limit the specific form of the above electronic device. For the convenience of description, the following description is based on the example of the electronic device being a mobile phone.

[0032] like Figure 1 As shown, the electronic device 100 includes a housing 101 and a display screen 102 mounted on the housing 101. Generally speaking, the housing 101 includes a middle frame and a back cover. Devices such as a circuit board and a battery are installed in the housing 101. A first button 103 and a second button 104 are provided on the housing 101. The first button 103 is, for example, a volume control button. The second button 104 is, for example, a power button.

[0033] The exemplary structure of the first button 103 of the electronic device 100 is as follows: Figure 2As shown. Specifically, the first button 103 includes a first button body 1031 and a second button body 1032. The first button body 1031 and the second button body 1032 are installed on the middle frame 105, and the first button body 1031 is located above the second button body 1032. When the user operates, the second button body 1032 is indirectly pressed by pressing the first button body 1031, that is, with the middle frame 105 as a reference, the first button body 1031 is located on the outside, and the second button body 1032 is located on the inside. The first button hanging ear 1033 and the second button hanging ear 1034 are respectively formed at both ends of the second button body 1032. The first button 103 is installed on the middle frame 105 by inserting the first button hanging ear 1033 and the second button hanging ear 1034 into the gap on the middle frame 105. The first button body 1031 is made of hard rubber material, for example, PC (polycarbonate) / PC+GF (polycarbonate fiber material). The second button body 1032 is made of soft rubber material, such as TPEE (thermoplastic polyester elastomer, also known as polyester rubber). The first button body 1031 and the second button body 1032 can be combined together by bonding, hot melting, etc.

[0034] The middle frame 105 is also provided with a first switch 1037, a second switch 1038, a first side key circuit board 1039 and a second side key circuit board 1040. The first side key circuit board 1039 and the second side key circuit board 1040 are mounted on the middle frame 105, and the first switch 1037 and the second switch 1038 are mounted on the first side key circuit board 1039 and the second side key circuit board 1040, respectively.

[0035] A first conductive base 1035 and a second conductive base 1036 are formed on the second button body 1032. When the second button body 1032 is mounted on the middle frame 105, the first conductive base 1035 and the second conductive base 1036 are in contact with the first switch 1037 and the second switch 1038, respectively. When the first button 103 is pressed, the first conductive base 1035 and the second conductive base 1036 act on the first switch 1037 and the second switch 1038, respectively, thereby generating corresponding control.

[0036] for Figure 2 The problem with the first button 103 shown is that the button and the middle frame 105 are fixed by inserting the button hook into the middle frame 105. This installation method is not firm enough and the button is prone to fall off.

[0037] The exemplary structure of the second button 104 of the electronic device 100 is as follows: Figure 3As shown. Specifically, the second button 104 includes a first button body 1041, a second button body 1042, a first button latch 1046 and a second button latch 1047. The first button body 1041 and the second button body 1042 are mounted on the middle frame 105, and the first button body 1041 is located above the second button body 1042. When the user operates, the second button body 1042 is indirectly pressed by pressing the first button body 1041, that is, with the middle frame 105 as a reference, the first button body 1041 is located on the outside, and the second button body 1042 is located on the inside. The first button latch 1046 and the second button latch 1047 are mounted on the middle frame 105, and the first button hanging ear 1433 and the second button hanging ear 1044 are respectively formed at both ends of the second button body 1042. The second button body 1042 is mounted on the middle frame 105 by inserting the first button hanging ear 1433 and the second button hanging ear 1044 into the first button latch 1046 and the second button latch 1047 respectively. The first button body 1041 and the second button body 1042 are made of hard plastic material, such as PC (polycarbonate) / PC+GF (polycarbonate fiber material). The first button body 1041 and the second button body 1042 can be combined together by bonding, hot melting, etc.

[0038] A switch 1048 and a side key circuit board 1049 are also provided on the middle frame 105. The side key circuit board 1049 is mounted on the middle frame 105, and the switches 1048 are mounted on the side key circuit boards 1049 respectively.

[0039] A conductive base 1045 is formed on the second button body 1042. When the second button body 1042 is mounted on the middle frame 105, the conductive base 1045 contacts the switch 1048. When the second button 104 is pressed, the conductive base 1045 acts on the switch 1048, thereby generating corresponding control.

[0040] for Figure 3 The second button 104 shown has the problem that the button is made of hard plastic, and the hard plastic ear has cracking and aging problems, which easily causes the button to fall off, and the hard plastic ear is thick, which is inconsistent with the current small space button design trend. In addition, for devices equipped with 3D curved screens, UV glue will be introduced when applying the protective film, and the UV glue will dissolve the hard plastic, causing the button to fall off.

[0041] Based on the above description, the embodiment of the present application proposes an electronic device, which adopts an improved key design to overcome the above problems. Figure 4-Figure 6 The key design of the embodiment of the present application is described. Figure 4-Figure 6 The switch button is used as an example for explanation, but it should be understood that the button design of the embodiment of the present application can also be applied to the volume button or other buttons.

[0042] Figure 4 A schematic diagram of the structure of a button provided in an embodiment of the present application.

[0043] like Figure 4 As shown, the key 106 provided in the embodiment of the present application includes a key body 1061, a first key hanging ear 1062, a second key hanging ear 1063, a first key plug 1064, a second key plug 1065 and a conductive base 1066. The first key hanging ear 1062, the second key hanging ear 1063 and the conductive base 1066 are fixed on the key body 1061, the first key plug 1064 and the second key plug 1065 are installed on the middle frame 105, and the key body 1061 is installed on the middle frame 105 by inserting the first key hanging ear 1062 and the second key hanging ear 1063 into the first key plug 1064 and the second key plug 1065 respectively. That is, the first key hanging ear 1062 and the second key hanging ear 1063 are respectively inserted into the gap formed by the first key plug 1064 and the second key plug 1065 and the middle frame 105, so that the key body 1061 is installed on the middle frame 105. In other words, the first button hanging ear 1062 and the second button hanging ear 1063 are respectively hung on the inner side of the first button pin 1064 and the second button pin 1065 (with the display screen of the device as a reference, the side close to the display screen is the inner side), so as to install the button body 1061 on the middle frame 105.

[0044] The key body 1061 is made of hard plastic material, such as PC (polycarbonate) / PC+GF (polycarbonate fiber material). The first key hanging ear 1062, the second key hanging ear 1063 and the conductive base 1066 are made of soft plastic material, such as TPEE (thermoplastic polyester elastomer, also known as polyester rubber). The first key hanging ear 1062, the second key hanging ear 1063 and the conductive base 1066 can be combined with the key body 1061 by bonding, hot melting, etc.

[0045] A switch 1067 and a side key circuit board 1068 are also provided on the middle frame 105. The side key circuit board 1068 is mounted on the middle frame 105, and the switches 1067 are mounted on the side key circuit boards 1068, respectively.

[0046] When the button 106 is mounted on the middle frame 105, the conductive base 1066 contacts the switch 1067. When the button 106 is pressed, the conductive base 1066 acts on the switch 1067, thereby generating corresponding control.

[0047] In the embodiment of the present application, the ear of the button 106 is made of soft rubber material, and the installation and fixation of the button 106 is achieved by inserting the ear into the button pin, thereby completely solving the problem of cracking of the hard rubber ear. Especially when space is limited, the thickness of the ear can be reduced by more than 1 / 3 compared with the thickness of the hard rubber ear, and the saved space can be used to increase the battery capacity and improve the battery life of the device; and because the chemical resistance of the soft rubber is better than that of hard rubber materials such as PC / PC+GF, the problem of UV glue dissolving hard rubber introduced by the 3D curved screen protective film can be optimized or solved, thereby reducing the problem of buttons falling off in the market.

[0048] Figure 5 A schematic diagram of the structure of another key provided in an embodiment of the present application.

[0049] like Figure 5 As shown, the key 107 provided in the embodiment of the present application includes a first key body 1071, a second key body 1072, a first key latch 1076 and a second key latch 1077. The first key body 1071 and the second key body 1072 are mounted on the middle frame 105, and the first key body 1071 is located above the second key body 1072. When the user operates, the second key body 1072 is indirectly pressed by pressing the first key body 1071, that is, with the middle frame 105 as a reference, the first key body 1071 is located on the outside, and the second key body 1072 is located on the inside. The first key latch 1076 and the second key latch 1077 are mounted on the middle frame 105, and the first key hanging ear 1073 and the second key hanging ear 1074 are formed at both ends of the second key body 1072, respectively. The second key body 1072 is mounted on the middle frame 105 by inserting the first key hanging ear 1073 and the second key hanging ear 1074 into the first key latch 1076 and the second key latch 1077 respectively. That is, the first button hanging ear 1073 and the second button hanging ear 1074 are respectively inserted into the gap formed by the first button latch 1076, the second button latch 1077 and the middle frame 105, so that the second button body 1072 is installed on the middle frame 105. In other words, the first button hanging ear 1073 and the second button hanging ear 1074 are respectively hung on the inner side of the first button latch 1076 and the second button latch 1077 (with the display screen of the device as a reference, the side close to the display screen is the inner side), so that the second button body 1072 is installed on the middle frame 105.

[0050] The first button body 1071 is made of metal material, such as aluminum alloy, stainless steel, etc. The second button body 1072 is made of soft rubber material, such as TPEE (thermoplastic polyester elastomer, also known as polyester rubber). The first button body 1071 and the second button body 1072 can be connected by dispensing glue or the like.

[0051] A switch 1078 and a side key circuit board 1079 are also provided on the middle frame 105. The side key circuit board 1079 is mounted on the middle frame 105, and the switches 1078 are mounted on the side key circuit boards 1079 respectively.

[0052] A conductive base 1075 is also formed on the second button body 1072. When the button 107 is mounted on the middle frame 105, the conductive base 1075 contacts the switch 1078. When the button 107 is pressed, the conductive base 1075 acts on the switch 1078, thereby generating corresponding control.

[0053] In the embodiment of the present application, the ear of the button 107 is made of soft rubber material, and the installation and fixation of the button 107 is achieved by inserting the ear into the button pin, thereby completely solving the problem of cracking of the hard rubber ear. Especially when space is limited, the thickness of the ear can be reduced by more than 1 / 3 compared with the thickness of the hard rubber ear, and the saved space can be used to increase the battery capacity and improve the battery life of the device; and because the chemical resistance of the soft rubber is better than that of hard rubber materials such as PC / PC+GF, the problem of UV glue dissolving hard rubber introduced by the 3D curved screen protective film can be optimized or solved, thereby reducing the problem of buttons falling off in the market.

[0054] Figure 6 A schematic diagram of the structure of another key provided in an embodiment of the present application.

[0055] like Figure 6 As shown, the key 108 provided in the embodiment of the present application includes a key body 1081, a first key latch 1084 and a second key latch 1085. The key body 1081 is formed with a first key hanging ear 1082, a second key hanging ear 1083 and a conductive base 1086. Figure 4 Compared with the embodiment shown in the figure, in this embodiment, the first key hanging ear 1082, the second key hanging ear 1083 and the conductive base 1086 are integrated on the key body 1081, or are integrally formed with the key body 1081. The first key plug 1084 and the second key plug 1085 are installed on the middle frame 105, and the key body 1081 is installed on the middle frame 105 by inserting the first key hanging ear 1082 and the second key hanging ear 1083 into the first key plug 1084 and the second key plug 1085 respectively. That is, the first key hanging ear 1082 and the second key hanging ear 1083 are respectively inserted into the gap formed by the first key plug 1084 and the second key plug 1085 and the middle frame 105, so that the key body 1081 is installed on the middle frame 105. In other words, the first button hanging ear 1082 and the second button hanging ear 1083 are respectively hung on the inner side of the first button pin 1084 and the second button pin 1085 (with the display screen of the device as a reference, the side close to the display screen is the inner side), so as to install the button body 1081 on the middle frame 105.

[0056] The button body 1081 is made of soft rubber material, such as TPEE (thermoplastic polyester elastomer, also known as polyester rubber). Therefore, the first button hanging ear 1082, the second button hanging ear 1083 and the conductive base 1086 are also made of soft rubber material.

[0057] A switch 1087 and a side key circuit board 1088 are also provided on the middle frame 105. The side key circuit board 1088 is mounted on the middle frame 105, and the switches 1087 are mounted on the side key circuit boards 1088, respectively.

[0058] When the button 108 is mounted on the middle frame 105, the conductive base 1086 contacts the switch 1087. When the button 108 is pressed, the conductive base 1086 acts on the switch 1087, thereby generating corresponding control.

[0059] In the embodiment of the present application, the ear of the button 108 is made of soft rubber material, and the installation and fixation of the button 108 is achieved by inserting the ear into the button pin, thereby completely solving the problem of cracking of the hard rubber ear. Especially when space is limited, the thickness of the ear can be reduced by more than 1 / 3 compared with the thickness of the hard rubber ear, and the saved space can be used to increase the battery capacity and improve the battery life of the device; and because the chemical resistance of the soft rubber is better than that of hard rubber materials such as PC / PC+GF, the problem of UV glue dissolving hard rubber introduced by the 3D curved screen protective film can be optimized or solved, thereby reducing the problem of buttons falling off in the market.

[0060] Figure 7 A schematic diagram of the structure of another key provided in an embodiment of the present application.

[0061] like Figure 7As shown, the key 109 provided in the embodiment of the present application includes a first key body 1091, a second key body 1092, a first key hanging ear 1093, a second key hanging ear 1094, a conductive base 1095, a first key plug 1096 and a second key plug 1097. The first key hanging ear 1093, the second key hanging ear 1094 and the conductive base 1095 are connected to the second key body 1092. The second key body 1092 is connected to the first key body 1091. The first key body 1091 and the second key body 1092 are installed on the middle frame 105, and the first key body 1091 is located above the second key body 1092. When the user operates, the second key body 1092 is indirectly pressed by pressing the first key body 1091, that is, with the middle frame 105 as a reference, the first key body 1091 is located on the outside, and the second key body 1092 is located on the inside. The first key latch 1096 and the second key latch 1097 are mounted on the middle frame 105, and the second key body 1092 is mounted on the middle frame 105 by inserting the first key hanging ear 1093 and the second key hanging ear 1094 into the first key latch 1096 and the second key latch 1097, respectively. That is, the first key hanging ear 1093 and the second key hanging ear 1094 are respectively inserted into the gap formed by the first key latch 1096 and the second key latch 1097 and the middle frame 105, so that the second key body 1092 is mounted on the middle frame 105. In other words, the first key hanging ear 1093 and the second key hanging ear 1094 are respectively hung on the inner side of the first key latch 1096 and the second key latch 1097 (with the display screen of the device as a reference, the side close to the display screen is the inner side), so that the second key body 1092 is mounted on the middle frame 105.

[0062] The first button body 1091 and the second button body are made of hard rubber material, such as PC (polycarbonate) / PC+GF (polycarbonate fiber material). The first button hanging ear 1093, the second button hanging ear 1094, and the conductive base 1095 are made of soft rubber material, such as TPEE (thermoplastic polyester elastomer, also known as polyester rubber). The first button body 1091 and the second button body 1092 can be connected by bonding or the like. The first button hanging ear 1093, the second button hanging ear 1094, the conductive base 1095 and the second button body 1092 can be connected by bonding or the like.

[0063] A switch 1098 and a side key circuit board 1099 are also provided on the middle frame 105. The side key circuit board 1099 is mounted on the middle frame 105, and the switches 1098 are mounted on the side key circuit boards 1099 respectively.

[0064] When the button 109 is mounted on the middle frame 105, the conductive base 1095 contacts the switch 1098. When the button 109 is pressed, the conductive base 1095 acts on the switch 1098, thereby generating corresponding control.

[0065] In the embodiment of the present application, the ear of the button 109 is made of soft rubber material, and the installation and fixation of the button 109 is achieved by inserting the ear into the button pin, thereby completely solving the problem of cracking of the hard rubber ear. Especially when space is limited, the thickness of the ear can be reduced by more than 1 / 3 compared with the thickness of the hard rubber ear, and the saved space can be used to increase the battery capacity and improve the battery life of the device; and because the chemical resistance of the soft rubber is better than that of hard rubber materials such as PC / PC+GF, the problem of UV glue dissolving hard rubber introduced by the 3D curved screen protective film can be optimized or solved, thereby reducing the problem of buttons falling off in the market.

[0066] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An electronic device, characterized in that: include: A middle frame, on which a first key latch and a second key latch are mounted, wherein the first key latch and the second key latch form a first installation gap and a second installation gap with the middle frame; a first button hanging ear, wherein the first button hanging ear is inserted into the first installation gap; a second button hanging ear, wherein the second button hanging ear is inserted into the second installation gap; A button body, wherein the button body is connected to the first button hanging ear and the second button hanging ear, and the first button hanging ear and the second button hanging ear are made of soft rubber material.

2. The electronic device according to claim 1, characterized in that: The first button hanging ear and the second button hanging ear are integrally formed with the button body.

3. The electronic device according to claim 1, characterized in that: The key body includes a first key body and a second key body, the first key body and the second key body are connected, and the first key hanging ear and the second key hanging ear are connected to the second key body.

4. The electronic device according to claim 3, characterized in that: The first button hanging ear and the second button hanging ear are integrally formed with or fixedly connected to the second button body.

5. The electronic device according to claim 3, characterized in that: The first button body is made of hard rubber material, and the second button body is made of soft rubber material.

6. The electronic device according to claim 3, characterized in that: The first key body and the second key body are made of hard rubber material.

7. The electronic device according to claim 3, characterized in that: The first button body is made of metal or alloy material, and the second button body is made of soft rubber material.

8. The electronic device according to claim 7, characterized in that: The first key body and the second key body are connected by glue dispensing.

9. The electronic device according to any one of claims 1 to 8, characterized in that: Also includes: A key circuit board and a switch located on the key circuit board; A conductive base is formed on the button body, and the conductive base is in contact with the switch.

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