Keyboard assembly and electronic equipment

Abstract

The utility model discloses a keyboard assembly and an electronic device, the keyboard assembly comprises a keyboard main body and a support part, and the keyboard main body comprises keys for input operation. The supporting part comprises a first supporting plate and a second supporting plate, one side edge of the first supporting plate is hinged to the keyboard body, the other opposite side edge of the first supporting plate is hinged to the second supporting plate, and the second supporting plate is used for supporting terminal equipment. The maximum turning angle alpha between the first wall face of the keyboard body and the second wall face of the first supporting plate is larger than or equal to 75 degrees and smaller than or equal to 85 degrees, and the maximum turning angle beta between the second wall face of the first supporting plate and the third wall face of the second supporting plate is larger than or equal to 30 degrees and smaller than or equal to 40 degrees. In the scheme, the opening angle of the first supporting plate is larger, and the opening angle of the second supporting plate is smaller than that of the first supporting plate, so that fingers are not easily blocked by the terminal equipment when a user operates a key close to the terminal equipment, and the input operation of the user is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of keyboards, in particular to a keyboard component and an electronic device. Background Art

[0002] The detachable keyboard assembly can be used to connect to the tablet. After the keyboard assembly is connected to the tablet, the tablet has a keyboard input function. The keyboard assembly includes a keyboard body and a support part. The keyboard body includes keys or a touchpad for input, and the support part is used to support the tablet. In the related art, the support part is hinged to the keyboard body. When the support part is rotated to a suitable angle (generally the maximum angle) relative to the keyboard body, the lower end of the tablet is close to the front button of the keyboard body. When the user operates the button near the tablet, the lower end of the tablet is easy to block the finger, making it inconvenient for the user to operate. Utility Model Content

[0003] The main purpose of the utility model is to provide a keyboard assembly and an electronic device, which can facilitate users to operate the keys on the keyboard.

[0004] To achieve the above-mentioned purpose, the utility model provides a keyboard assembly suitable for being detachably connected to a terminal device, and the keyboard assembly comprises:

[0005] A keyboard body having a first wall surface, wherein the keyboard body includes a key located on one side of the first wall surface;

[0006] The support portion includes a first support plate and a second support plate, wherein one side of the first support plate is hinged to the keyboard body, and the other side opposite thereto is hinged to the second support plate, the first support plate has a second wall facing the key, and the second support plate has a third wall facing the key, and the third wall is suitable for supporting the terminal device;

[0007] The maximum flip angle α between the first wall surface and the second wall surface and the maximum flip angle β between the second wall surface and the third wall surface satisfy: 75°≤α≤85°, 30°≤β≤40°.

[0008] In some embodiments, the maximum flip angle α between the first wall surface and the second wall surface and the maximum flip angle β between the second wall surface and the third wall surface satisfy: 80°≤α≤85°, 35°≤β≤40°.

[0009] In some embodiments, the keyboard assembly further includes a weight portion connected to a side of the keyboard body facing away from the first support plate.

[0010] In some embodiments, the keyboard body includes a connecting part and a keyboard part, one side of the connecting part is connected to the first support plate, the connecting part has a fourth wall facing the second wall, the keyboard part is connected to the fourth wall, the keyboard part includes the key, and the counterweight part is located between the keyboard part and the connecting part.

[0011] In some embodiments, the keyboard portion includes an upper cover and a bottom plate, the wall surface of the upper cover facing away from the connecting portion is the first wall surface, and an opening is provided on a side of the upper cover facing the connecting portion;

[0012] The counterweight portion is in a plate shape, and the counterweight portion and the bottom plate are jointly connected to a side of the upper cover facing the connecting portion, and jointly cover the opening.

[0013] In some embodiments, the base plate includes a first side edge connected to the counterweight portion, a groove is provided on the wall surface of the first side edge facing away from the fourth wall surface, the groove penetrates through the end wall of the first side edge facing the counterweight portion in a direction close to the counterweight portion, the counterweight portion includes a second side edge connected to the base plate, a protrusion protruding toward the base plate is provided on the end of the second side edge facing the base plate, and the protrusion extends into the groove.

[0014] In some embodiments, the groove is provided with a locking protrusion protruding in a direction away from the fourth wall surface, and the wall surface of the protrusion facing the fourth wall surface is provided with a locking groove, and the locking protrusion extends into the locking groove.

[0015] In some embodiments, the keyboard assembly includes a hinge portion, the hinge portion including:

[0016] Rotating shaft;

[0017] A first hinge piece is connected to the first support plate, the first hinge piece comprises a first hinge claw, the first hinge claw is rotatably connected to the rotating shaft, and a first retaining edge is protruded from one end of the first hinge claw along the axial direction of the rotating shaft;

[0018] A second hinge piece is connected to the second support plate, the second hinge piece comprises a second hinge claw, the second hinge claw is rotatably connected to the rotating shaft, the second hinge claw is located at a side of the first hinge claw where the first rib is provided, a second rib is provided at an end of the second hinge claw facing the first rib, and the second rib and the first rib are arranged along the circumference of the rotating shaft;

[0019] Wherein, when the first articulated claw and the second articulated claw rotate relative to the rotating shaft until the first rib abuts against the second rib, the first support plate and the second support plate are at a maximum flip angle position.

[0020] The embodiment of the second aspect of the present application further provides an electronic device, including:

[0021] A keyboard assembly as described in any of the above items; and

[0022] The terminal device is detachably connected to the keyboard assembly and is in communication connection with the keyboard assembly.

[0023] In some embodiments, when the electronic device is in a preset state and in a preset position, the weight portion is configured so that when the preset position of the electronic device is subjected to a pressing force F≤2N, the electronic device is in a stable state;

[0024] The preset state is defined as: the first support plate and the keyboard body are at the maximum flip angle position, and the first support plate and the second support plate are at the maximum flip angle position;

[0025] The preset position is defined as: the keyboard body is supported on a horizontal support surface, the first wall surface is parallel to the horizontal support surface, and the support portion is located above the keyboard body;

[0026] The preset position is defined as the upper end position of the terminal device;

[0027] The direction of the pressing force F is perpendicular to the third wall surface and downward;

[0028] The stable state is defined as a state in which the keyboard body does not flip relative to the horizontal bearing surface.

[0029] Compared with the prior art, the beneficial effects of the utility model are:

[0030] In the technical solution of the utility model, the keyboard assembly includes a keyboard body and a support portion, and the keyboard body includes keys for performing input operations. The support portion includes a first support plate and a second support plate, one side of the first support plate is hinged to the keyboard body, and the other side opposite to the first support plate is hinged to the second support plate, and the second support plate is used to support the terminal device. The maximum flip angle α between the first wall surface of the keyboard body and the second wall surface of the first support plate satisfies: 75°≤α≤85°, that is, in this solution, the maximum flip angle of the first support plate is larger than the maximum flip angle in the related art, so that after the terminal device is supported on the second support plate, the terminal device can be further away from the keys on the keyboard body, so that when the user operates the keys close to the terminal device, the fingers are not easily blocked by the terminal device, and the user's input operation is more convenient.

[0031] Furthermore, when the maximum flip angle of the first support plate is larger, the tablet connected to the second support plate is further away from the keyboard body, so that the center of gravity of the tablet is further away from the keyboard body, increasing the risk of the keyboard body tipping over. In view of this, in the present application, the maximum flip angle β between the second wall surface of the first support plate and the third wall surface of the second support plate satisfies: 30°≤β≤40°. In other words, compared with the keyboard assembly in the related art, the second support plate of the keyboard assembly in this solution has a smaller maximum flip angle than the first support plate. On the one hand, the lower end of the tablet is further away from the keys on the keyboard, so that the lower end of the tablet is less likely to block the user's fingers; on the other hand, the center of gravity of the tablet is closer to the keys on the keyboard body, so that the keyboard assembly is less likely to tip over due to unstable center of gravity. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 This is a three-dimensional schematic diagram of a keyboard assembly in one embodiment of the utility model;

[0034] Figure 2 It is a side view schematic diagram of a keyboard assembly in one embodiment of the utility model;

[0035] Figure 3 This is an exploded schematic diagram of a keyboard assembly in one embodiment of the utility model;

[0036] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0037] Figure 5 It is a three-dimensional schematic diagram of an electronic device in a second state in one embodiment of the utility model;

[0038] Figure 6 It is a three-dimensional schematic diagram of an electronic device in a first state according to an embodiment of the utility model;

[0039] Figure 7 It is a side view schematic diagram of an electronic device in a first state according to an embodiment of the utility model;

[0040] Figure 8 It is a schematic diagram of an explosion of an electronic device in a second state in one embodiment of the utility model;

[0041] Fig. 9This is an exploded schematic diagram of a hinge portion in one embodiment of the utility model;

[0042] Fig.10 It is a side view schematic diagram of an electronic device in a second state according to an embodiment of the utility model.

[0043] Description of Figure Numbers:

[0044] 10-Electronic equipment;

[0045] 100-keyboard assembly;

[0046] 110-keyboard body; 111-connecting portion; 1111-fourth wall; 112-keyboard portion; 1121-upper cover;

[0047] 1122-opening; 1123-first wall; 1124-bottom plate; 1125-button; 11241-first side edge; 11242-groove; 11243-clamping protrusion; 1126-touch panel;

[0048] 120-supporting part; 121-first supporting plate; 1211-second wall surface; 122-second supporting plate; 1221-third wall surface;

[0049] 130-weight portion; 131-second side edge; 132-protruding portion; 133-slot;

[0050] 140-hinge part; 141-rotating shaft; 142-first hinge piece; 1421-first hinge claw; 1422-first retaining edge; 143-second hinge piece; 1431-second hinge claw; 1432-second retaining edge;

[0051] 200-Terminal device.

[0052] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] The detachable keyboard assembly can be used to connect to a terminal device such as a tablet or a two-in-one tablet computer. Taking a tablet as an example, after the keyboard assembly is connected to the tablet, the tablet has a keyboard input function. The keyboard assembly includes a keyboard body and a support part. The keyboard body includes keys or a touchpad for inputting data, and the support part is used to support the tablet.

[0055] In the related art, the support portion includes a first support plate and a second support plate, one side of the first support plate is hinged to the keyboard body, and the other side is hinged to the second support plate. When the keyboard assembly is not working, the first support plate and the second support plate are aligned and both are stacked with the keyboard body. When the keyboard assembly is working, the first support plate rotates relative to the keyboard body, and the maximum flip angle is between 72° and 75°, and the second support plate rotates relative to the first support plate, and the maximum flip angle is between 42° and 45°. The support portion is hinged to the keyboard body. When the support portion rotates to a suitable angle (generally the maximum angle) relative to the keyboard body, the lower end of the tablet is closer to the front end button of the keyboard body. When the user operates the button near the tablet, the lower end of the tablet is easy to block the finger, making it inconvenient for the user to operate.

[0056] The applicant initially considered increasing the size of the keyboard assembly and adjusting the relative connection position between the tablet and the support plate so that the tablet can move up to avoid the user's fingers. However, in this solution, when the tablet is not working, it is clamped between the support part and the keyboard body, and there is a gap at the junction between the support part and the keyboard body. This gap is easy to contain foreign matter and is not convenient for cleaning the keyboard assembly. The applicant later considered directly increasing the maximum flip angle of the first support part so that the tablet moves away from the key to avoid the user's fingers. However, in this solution, the center of gravity of the tablet is further away from the key, increasing the risk of the keyboard body tipping over.

[0057] In view of this, in order to solve the above problems, see Figure 1-10 The present embodiment provides a keyboard assembly 100, which is suitable for being detachably connected to a terminal device 200. The terminal device 200 may be a tablet, a mobile phone, or a two-in-one tablet computer. For ease of description, the terminal device 200 is exemplified as a tablet.

[0058] The connection method between the keyboard assembly 100 and the tablet depends on actual needs. In one embodiment, the keyboard assembly 100 is provided with a sleeve, which can be sleeved on the periphery of the tablet to fix the tablet. In other embodiments, the keyboard assembly 100 is provided with a first magnetic component, and the first magnetic component attracts the second magnetic component on the tablet to fix the tablet. Specifically, the first magnetic component can be a permanent magnet, and the second magnetic component can be a metal that can be attracted by a permanent magnet, such as iron.

[0059] After the keyboard assembly 100 is connected to the tablet, it communicates with the tablet, and the keyboard assembly 100 can obtain the user's input operations such as pressing or touching, so as to control the display and operation of the tablet. The way in which the keyboard assembly 100 communicates with the tablet depends on actual needs. In some embodiments, the keyboard assembly 100 can be connected to the tablet for wireless communication, such as Bluetooth connection, Star Flash connection, Wi-Fi connection, NFC connection or mobile communication network connection. In other embodiments, the keyboard assembly 100 can be electrically connected to the tablet. For example, the tablet is provided with a first contact point, and the keyboard assembly 100 is provided with a second contact point. When the tablet is positioned on the keyboard assembly 100, the first contact point contacts and is electrically connected to the second contact point, thereby realizing the communication connection between the tablet and the keyboard assembly 100.

[0060] See also Figure 1-3 The keyboard assembly 100 includes a keyboard body 110 and a support portion 120. The keyboard body 110 has a first wall 1123. The keyboard body 110 includes a key 1125 located on one side of the first wall 1123. The number, type and distribution position of the key 1125 have been widely disclosed in the prior art and will not be described here. In some embodiments, the keyboard body 110 may also include a touch pad 1126 located on one side of the first wall 1123. The touch pad 1126 may obtain the user's touch and press operations, thereby facilitating the control of the tablet. When the keyboard body 110 is in working state, it may be supported on a horizontal plane (such as a desktop or the ground, etc.), or on an inclined plane (such as an inclined plane of a bracket). For the sake of convenience of description, the following example is taken as an example of the keyboard body 110 being supported on a horizontal plane when the tablet is in working state. When the keyboard body 110 is supported on a horizontal plane, the first wall 1123 is the upper wall of the keyboard body 110.

[0061] The support portion 120 is used to support the tablet, and the support portion 120 is hinged to one side of the keyboard body 110. Figure 6-Figure 7 In the first state of the keyboard assembly 100, the support portion 120 and the keyboard body 110 jointly clamp the tablet between them to facilitate storage of the tablet; see Figure 1-Figure 5 In the second state of the keyboard assembly 100, the support portion 120 is rotated open relative to the keyboard body 110 and supports the tablet upward to facilitate operation of the tablet. The support portion 120 includes a first support plate 121 and a second support plate 122. One side of the first support plate 121 is hinged to the keyboard body 110, and the other side opposite to the first support plate 122 is hinged to the second support plate 122. The first support plate 121 has a second wall 1211 facing the key 1125, and the second support plate 122 has a third wall 1221 facing the key 1125. The third wall 1221 is suitable for supporting the terminal device 200.

[0062] See also Figure 5-Figure 7 In the first state of the keyboard assembly 100, the second wall surface 1211 and the third wall surface 1221 are arranged substantially coplanarly, and the first wall surface 1123 is spaced apart from and arranged parallel to the second wall surface 1211 and the third wall surface 1221. In the process of the keyboard assembly 100 changing from the first state to the second state, the first support plate 121 flips relative to the keyboard assembly 100, at which time the second wall surface 1211 rotates relative to the first wall surface 1123, and the rotation angle of the second wall surface 1211 relative to the first wall surface 1123 during the rotation process is defined as the flip angle between the first wall surface 1123 and the second wall surface 1211. In other words, in the process of the keyboard assembly 100 changing from the first state to the second state, the angle at which the first support plate 121 rotates relative to the keyboard body 110 is defined as the flip angle between the first wall surface 1123 and the second wall surface 1211. In the process of the keyboard assembly 100 changing from the first state to the second state, the second support plate 122 flips relative to the first support plate 121, and at this time, the third wall surface 1221 rotates relative to the second wall surface 1211. The rotation angle of the third wall surface 1221 relative to the second wall surface 1211 during the rotation process is defined as the flip angle between the third wall surface 1221 and the second wall surface 1211. In other words, in the process of the keyboard assembly 100 changing from the first state to the second state, the rotation angle of the second support plate 122 relative to the first support plate 121 is defined as the flip angle between the second wall surface 1211 and the third wall surface 1221.

[0063] See also Figure 1-Figure 3 In this embodiment, the maximum flip angle α between the first wall surface 1123 of the keyboard body 110 and the second wall surface 1211 of the first support plate 121 (i.e., the flip angle when the first support plate 121 rotates to the extreme position relative to the keyboard body 110) satisfies: 75°≤α≤85°. For example, the maximum flip angle α between the first wall surface 1123 of the keyboard body 110 and the second wall surface 1211 of the first support plate 121 can be 75°, 77°, 79°, 80°, 81°, 83° or 85°, etc. That is to say, in this solution, the maximum flip angle of the first support plate 121 is larger than the maximum flip angle in the related art, so that after the terminal device 200 is supported on the second support plate 122, the terminal device 200 can be further away from the key 1125 on the keyboard body 110, so that when the user operates the key 1125 close to the terminal device 200, the finger is not easily blocked by the terminal device 200, and the user's input operation is more convenient.

[0064] Furthermore, when the maximum flip angle of the first support plate 121 is larger, the tablet connected to the second support plate 122 is further away from the keyboard body 110, so that the center of gravity of the tablet is further away from the keyboard body 110, increasing the risk of the keyboard body 110 tipping over. Figure 2 In the present application, the maximum flip angle β between the second wall surface 1211 of the first support plate 121 and the third wall surface 1221 of the second support plate 122 (i.e., the flip angle when the second support plate 122 is rotated to the extreme position relative to the first support plate 121) satisfies: 30°≤β≤40°. Exemplarily, the maximum flip angle β between the second wall surface 1211 of the first support plate 121 and the third wall surface 1221 of the second support plate 122 can be 30°, 32°, 34°, 36°, 38° or 40°, etc. In other words, compared with the keyboard assembly 100 in the related art, the second support plate 122 of the keyboard assembly 100 in the present solution has a smaller maximum flip angle than the first support plate 121. On the one hand, the lower end of the tablet is farther away from the key 1125 on the keyboard, so that the lower end of the tablet is less likely to block the user's fingers; on the other hand, the center of gravity of the tablet is closer to the key 1125 on the keyboard body 110, so that the keyboard assembly 100 is not easy to tip over due to unstable center of gravity.

[0065] In particular, since the maximum flip angle of the first support plate 121 is increased and the maximum flip angle of the second support plate 122 is decreased in the present application, in addition to being able to reduce the influence of the lower end of the tablet on the user's operation of the key 1125 under the premise that the keyboard has a relatively stable support state, it can also enable the user to have a good viewing angle for the display screen of the tablet. Specifically, when the maximum flip angle of the first support plate 121 is increased, the display surface of the tablet rotates forward, and when the maximum flip angle of the second support plate 122 is decreased, the display surface of the tablet rotates reversely, and finally the display angle of the display surface of the tablet is coordinated to a reasonable angle, so as not to affect the viewing angle of the user observing the display surface of the tablet.

[0066] In order to make the lower end of the tablet not affect the user's operation of the key 1125 on the keyboard body 110 as much as possible, the maximum flip angle α between the first wall 1123 and the second wall 1211 is as large as possible. In view of this, in some embodiments, the maximum flip angle α between the first wall 1123 and the second wall 1211 and the maximum flip angle β between the second wall 1211 and the third wall 1221 meet: 80°≤α≤85°, 35°≤β≤10°. Exemplarily, the maximum flip angle α between the first wall 1123 and the second wall 1211 can be 80°, 81°, 82°, 83°, 84° or 85°, etc. The maximum flip angle β between the second wall 1211 of the first support plate 121 and the third wall 1221 of the second support plate 122 can be 35°, 36°, 37°, 38°, 39° or 40°, etc. In this solution, the terminal device 200 can have a more suitable viewing angle under the premise that the supporting state of the keyboard assembly 100 is stable.

[0067] See also Figure 2-Figure 5 In some embodiments, in order to make the keyboard assembly 100 support the tablet more stably in the second state, the keyboard assembly 100 further includes a weight portion 130, and the weight portion 130 is connected to the side of the keyboard body 110 away from the first support plate 121. The weight portion 130 can adjust the center of gravity of the keyboard body 110 as a whole. Since the weight portion 130 is connected to the side of the keyboard body 110 away from the first support plate 121, the center of gravity of the keyboard body 110 moves toward the user, and the keyboard assembly 100 is less likely to tip over in the direction away from the user. In addition, due to the addition of the weight portion 130, the maximum flip angle β between the second wall 1211 and the third wall 1221 can be selected more freely, so that the tablet can be adjusted to a better angle, which is conducive to the user observing the display screen of the tablet at a suitable viewing angle.

[0068] The material and shape of the weight portion 130 can be set according to actual needs. In one embodiment, the material of the weight portion 130 can be a metal material with a high density, for example, the material of the weight portion 130 can be one of iron, copper, tin, lead, zinc, or an alloy of one or more of these materials.

[0069] In order to reduce the thickness of the keyboard body 110, in some embodiments, the weight portion 130 may be in the shape of a plate. The weight portion 130 may be exposed or hidden. Figure 2-Figure 5In this embodiment, the counterweight portion 130 is concealed. Specifically, the keyboard body 110 includes a connecting portion 111 and a keyboard portion 112. The connecting portion 111 is connected to the lower wall of the keyboard portion 112 for supporting the keyboard portion 112, and one side of the connecting portion 111 is hinged to the first support plate 121 so that the first support plate 121 rotates relative to the connecting portion 111. In some embodiments, the connecting portion 111 may be made of plastic; in other embodiments, the connecting portion 111 may be made of leather. The keyboard portion 112 includes the aforementioned buttons 1125, and the keyboard portion 112 may also include the aforementioned touch pad 1126. The keyboard portion 112 is used to obtain the user's input operation to control the display and operation of the tablet. The connecting portion 111 has a fourth wall 1111 (i.e., an upper wall of the connecting portion 111) facing the second wall 1211, the keyboard portion 112 is connected to the fourth wall 1111, and the counterweight portion 130 is located between the keyboard portion 112 and the connecting portion 111, so that the counterweight portion 130 is not visible from the outside, thereby improving the aesthetics of the keyboard assembly 100.

[0070] See also Figure 3-Figure 5 In some embodiments, the keyboard part 112 includes an upper cover 1121 and a bottom plate 1124. The wall of the upper cover 1121 facing away from the connecting part 111 is a first wall 1123. The side of the upper cover 1121 facing the connecting part 111 is provided with an opening 1122. The upper cover 1121 defines a cavity connected to the opening 1122. The internal electronic components of the keyboard part 112 are all arranged in the cavity. A plurality of openings penetrating the first wall 1123 are provided above the upper cover 1121. The keys 1125 of the keyboard part 112 pass upward through each opening. The counterweight part 130 is in the shape of a plate. The counterweight part 130 and the bottom plate 1124 are connected to the side of the upper cover 1121 facing the connecting part 111 and cover the opening 1122 together. In this solution, the counterweight part 130 has the same function as the bottom plate 1124. The counterweight part 130 and the bottom plate 1124 together constitute the bottom cover of the upper cover 1121. Compared with the solution in which the bottom plate 1124 completely covers the lower opening 1122 of the upper cover 1121 and the counterweight portion 130 is disposed in the concave cavity of the upper cover 1121 , the space occupied by the counterweight portion 130 can be reduced, thereby reducing the overall thickness of the keyboard portion 112 .

[0071] In order to make the connection between the bottom plate 1124 and the counterweight 130 tighter and prevent a gap from appearing at the junction of the bottom plate 1124 and the counterweight 130 so as to separate the counterweight 130 from the bottom plate 1124, see Figure 3-Figure 4, in some embodiments, the junction position between the bottom plate 1124 and the counterweight portion 130 is fitted with a convex and concave structure. Specifically, the bottom plate 1124 includes a first side 11241 connecting the counterweight portion 130. A concave groove 11242 is provided on the wall surface of the first side 11241 facing away from the fourth wall surface 1111. The concave groove 11242 penetrates the end wall of the first side 11241 facing the counterweight portion 130 in the direction close to the counterweight portion 130. In this embodiment, the end of the first side 11241 facing the counterweight portion 130 is a flat wall, and in the lateral direction and parallel to this flat wall, the first side 11241 is provided with a plurality of spaced concave grooves 11242. The counterweight portion 130 includes a second side 131 connecting the bottom plate 1124. A convex portion 132 protruding towards the bottom plate 1124 is provided at the end of the second side 131 facing the bottom plate 1124. The number of the convex portions 132 of the counterweight portion 130 is the same as the number of the concave grooves 11242 of the bottom plate 1124, and each convex portion 132 extends into each concave groove 11242 in a one-to-one correspondence. In this solution, the contact area between the bottom plate 1124 and the counterweight portion 130 is larger, and the connection between the two is tighter. At the same time, when the two deflect, the cooperation between the convex and the concave groove 11242 makes it difficult for relative rotation to occur between the bottom plate 1124 and the counterweight portion 130, so that no gap is likely to appear at the junction position between the two, thus preventing the counterweight portion 130 from separating from the bottom plate 1124. In other embodiments, the first side 11241 can be provided with a convex, and the second side 131 can be provided with a concave groove 11242, and the convex of the first side 11241 extends into the concave groove 11242 of the second side 131, so as to realize the cooperation between the bottom plate 1124 and the counterweight portion 130.

[0072] See Figure 3-Figure 4 , in some embodiments, the concave groove 11242 is provided with a clamping convex 11243 protruding in the direction away from the fourth wall surface 1111, and a clamping groove 133 is provided on the wall surface of the convex portion 132 facing the fourth wall surface 1111, and the clamping convex 11243 extends into the clamping groove 133. In this embodiment, since the clamping convex 11243 extends out of the clamping groove 133, it can limit the separation of the counterweight portion 130 and the bottom plate 1124 in the direction away from each other, improving the connection stability between the bottom plate 1124 and the counterweight portion 130. In a further embodiment, the clamping groove 133 can be a through groove, that is, the clamping groove 133 is arranged vertically through the convex portion 132. When the clamping groove 133 is a through groove, the clamping convex 11243 can pass through the clamping groove 133, further preventing the counterweight portion 130 from detaching from the bottom plate 1124.

[0073] In some embodiments, the material of the bottom plate 1124 can be a plastic part, and the bottom plate 1124 and the counterweight part 130 are ultrasonically welded. In this solution, when processing the bottom plate 1124 and the counterweight part 130, it is only necessary to process and form the protrusion 132 and the clamping groove 133 on the counterweight part 130, and make the protrusion 132 overlap with the first side 11241 of the bottom plate 1124, and through ultrasonic welding, the protrusion 132 is embedded in the first side 11241 to form the groove 11242 and the clamping protrusion 11243, and the structure of the groove 11242 and the clamping protrusion 11243 does not need to be formed in advance, which reduces the processing complexity of the bottom plate 1124.

[0074] When the bottom plate 1124 and the counterweight part 130 jointly cover the opening 1122 of the upper cover 1121, in some embodiments, the bottom plate 1124 and the counterweight part 130 can be directly connected to the fourth wall 1111 of the connection part 111. In other embodiments, a cover (not shown in the figure) can also be provided on the lower surface of the bottom plate 1124 and the counterweight part 130, and the upper surface of the cover covers the lower surface of the bottom plate 1124 and the counterweight part 130, and the lower surface of the cover is connected to the fourth wall 1111 of the connection part 111. In this solution, the bottom plate 1124 and the counterweight part 130 are covered with a cover, which can cover the gap between the bottom plate 1124 and the counterweight part 130 on the one hand, and improve the waterproof and dustproof effect; on the other hand, it can also improve the connection stability between the bottom plate 1124 and the counterweight part 130.

[0075] See also Figure 8-Figure 9In some embodiments, the keyboard assembly 100 includes a hinge portion 140, and the hinge portion 140 includes a rotating shaft 141, a first hinge piece 142, and a second hinge piece 143. The first hinge piece 142 is connected to the first support plate 121, and the first hinge piece 142 includes a first hinge claw 1421, and the first hinge claw 1421 is rotatably connected to the rotating shaft 141. One end of the first hinge claw 1421 along the axial direction of the rotating shaft 141 is protruded with a first retaining edge 1422. The second hinge piece 143 is connected to the second support plate 122. The second hinge piece 143 includes a second hinge claw 1431. The second hinge claw 1431 is rotatably connected to the rotating shaft 141. The second hinge claw 1431 is located at a side of the first hinge claw 1421 where the first rib 1422 is provided. The second rib 1432 is provided at the end of the second hinge claw 1431 facing the first rib 1422. The second rib 1432 and the first rib 1422 are arranged along the circumference of the rotating shaft 141. When the first hinge claw 1421 and the second hinge claw 1431 rotate relative to the rotating shaft 141 until the first rib 1422 abuts against the second rib 1432, the first support plate 121 and the second support plate 122 are at the maximum flip angle position. In this solution, the first rib 1422 and the second rib 1432 are provided, so that the limit of the rotation limit position of the first support plate 121 and the second support plate 122 is more stable. Furthermore, in this embodiment, the first rib 1422 and the first hinge claw 1421 are integrally provided, and the second rib 1432 and the second hinge claw 1431 are integrally provided, thereby reducing the difficulty of processing the first hinge piece 142 and the second hinge piece 143 .

[0076] In some embodiments, the hinge portion 140 may include multiple first hinge pieces 142 and multiple second hinge pieces 143, each first hinge piece 142 and each second hinge piece 143 is hinged to the rotating shaft 141, and along the axial direction of the rotating shaft 141, each first hinge piece 142 and each second hinge piece 143 is alternately arranged one by one.

[0077] In some embodiments, the keyboard assembly 100 may include two hinge portions 140 , wherein one hinge portion 140 is used to realize the hinge connection between the first support plate 121 and the second support plate 122 , and the other hinge portion 140 is used to realize the hinge connection between the first support plate 121 and the keyboard body 110 .

[0078] See also Figure 1-Figure 10 The embodiment of the second aspect of the present application further provides an electronic device 10, which includes the keyboard assembly 100 and the terminal device 200 in any of the above embodiments. The terminal device 200 can specifically be a tablet, a mobile phone, or a two-in-one tablet computer. The terminal device 200 is detachably connected to the keyboard assembly 100 and is communicatively connected to the keyboard assembly 100. The specific connection method between the terminal device 200 and the keyboard assembly 100 is described above and will not be repeated here.

[0079] In some embodiments, when the electronic device 10 is in a preset state and in a preset position, the weight portion 130 is configured so that when the preset position of the electronic device 10 is subjected to a pressing force F≤2N, the electronic device 10 is in a stable state.

[0080] The preset state is defined as: the first support plate 121 and the keyboard body 110 are at the maximum flip angle position, and the first support plate 121 and the second support plate 122 are at the maximum flip angle position;

[0081] The preset position is defined as: the keyboard body 110 is supported on a horizontal support surface, the first wall surface 1123 is parallel to the horizontal support surface, and the support portion 120 is located above the keyboard body 110;

[0082] The preset position is defined as the upper end position of the terminal device 200;

[0083] The direction of the pressing force F is perpendicular to the third wall surface 1221 and downward;

[0084] The stable state is defined as a state in which the keyboard body 110 is not flipped relative to the horizontal supporting surface.

[0085] In other words, in Fig.10 In the state shown, when the user uses a force of 2N to press the upper end position of the terminal device 200 in a direction perpendicular to the third wall 1221 and downward, the lower wall surface of the keyboard body 110 does not flip relative to the horizontal bearing surface. In this solution, the position of the electronic device 10 can be made more stable during the normal touch screen operation of the user. In actual operation, by setting a counterweight 130 of different weights and pressing the upper end position of the terminal device 200 with a force of 2N during the test, when the lower wall surface of the keyboard body 110 flips relative to the horizontal bearing surface, the weight of the counterweight 130 is increased, and when the lower wall surface of the keyboard body 110 does not flip relative to the horizontal bearing surface, the weight of the counterweight 130 is reduced until the pressing force is equal to 2N and the keyboard body 110 is in a just stable state, the weight of the counterweight 130 is determined. In this solution, the weight of the keyboard body 110 can be reduced while improving the stability of the keyboard body 110.

[0086] See also Fig.10 The following is a calculation process of the pressing force of the keyboard assembly 100 in one embodiment. The weight of the keyboard assembly 100 is G 1 , the distance between the center of gravity of the keyboard assembly 100 and the fulcrum is H 1 The weight of the terminal device 200 is G 2 , the distance between the center position of the terminal device 200 and the fulcrum position is H 2The center of gravity of the keyboard assembly 100 and the center of gravity of the terminal device 200 are both located on the same side of the fulcrum. The pressing force F is perpendicular to the display screen of the terminal device 200, and the distance between the pressing position and the fulcrum is H. 3 , where G 1 ×H 1 +G 2 ×H 2 ≥2N×H 3 .

[0087] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0088] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0089] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A keyboard assembly, suitable for being detachably connected to a terminal device, characterized in that: The keyboard assembly comprises: A keyboard body having a first wall surface, wherein the keyboard body includes a key located on one side of the first wall surface; The support portion includes a first support plate and a second support plate, wherein one side of the first support plate is hinged to the keyboard body, and the other side opposite thereto is hinged to the second support plate, the first support plate has a second wall facing the key, and the second support plate has a third wall facing the key, and the third wall is suitable for supporting the terminal device; The maximum flip angle α between the first wall surface and the second wall surface and the maximum flip angle β between the second wall surface and the third wall surface satisfy: 75°≤α≤85°, 30°≤β≤40°.

2. The keyboard assembly according to claim 1, wherein: A maximum flip angle α between the first wall surface and the second wall surface and a maximum flip angle β between the second wall surface and the third wall surface satisfy: 80°≤α≤85°, 35°≤β≤40°.

3. The keyboard assembly according to claim 1, wherein: The keyboard assembly further includes a weight portion connected to a side of the keyboard body facing away from the first support plate.

4. The keyboard assembly according to claim 3, wherein: The keyboard body includes a connecting part and a keyboard part, one side of the connecting part is connected to the first support plate, the connecting part has a fourth wall facing the second wall, the keyboard part is connected to the fourth wall, the keyboard part includes the keys, and the counterweight part is located between the keyboard part and the connecting part.

5. The keyboard assembly according to claim 4, wherein: The keyboard part comprises an upper cover and a bottom plate, the wall surface of the upper cover facing away from the connecting part is the first wall surface, and an opening is provided on a side of the upper cover facing the connecting part; The counterweight portion is in a plate shape, and the counterweight portion and the bottom plate are jointly connected to a side of the upper cover facing the connecting portion, and jointly cover the opening.

6. The keyboard assembly according to claim 5, wherein: The bottom plate includes a first side edge connected to the counterweight portion, a groove is provided on the wall surface of the first side edge facing away from the fourth wall surface, the groove penetrates through the end wall of the first side edge facing the counterweight portion in a direction close to the counterweight portion, the counterweight portion includes a second side edge connected to the bottom plate, a protrusion is provided on the end of the second side edge facing the bottom plate and the protrusion extends into the groove.

7. The keyboard assembly according to claim 6, wherein: The groove is provided with a clamping protrusion protruding in a direction away from the fourth wall surface, and the wall surface of the protrusion facing the fourth wall surface is provided with a clamping groove, and the clamping protrusion extends into the clamping groove.

8. The keyboard assembly according to claim 1, wherein: The keyboard assembly includes a hinge portion, and the hinge portion includes: Rotating shaft; A first hinge piece is connected to the first support plate, the first hinge piece comprises a first hinge claw, the first hinge claw is rotatably connected to the rotating shaft, and a first retaining edge is protruded from one end of the first hinge claw along the axial direction of the rotating shaft; A second hinge piece is connected to the second support plate, the second hinge piece comprises a second hinge claw, the second hinge claw is rotatably connected to the rotating shaft, the second hinge claw is located at a side of the first hinge claw where the first rib is provided, a second rib is provided at an end of the second hinge claw facing the first rib, and the second rib and the first rib are arranged along the circumference of the rotating shaft; Wherein, when the first articulated claw and the second articulated claw rotate relative to the rotating shaft until the first rib abuts against the second rib, the first support plate and the second support plate are at a maximum flip angle position.

9. An electronic device, characterized in that include: The keyboard assembly according to any one of claims 1 to 8; as well as The terminal device is detachably connected to the keyboard assembly and is in communication connection with the keyboard assembly.

10. The electronic device according to claim 9, characterized in that: When the electronic device is in a preset state and in a preset position, the weight portion is configured so that when the preset position of the electronic device is subjected to a pressing force F≤2N, the electronic device is in a stable state; The preset state is defined as: the first support plate and the keyboard body are at the maximum flip angle position, and the first support plate and the second support plate are at the maximum flip angle position; The preset position is defined as: the keyboard body is supported on a horizontal support surface, the first wall surface is parallel to the horizontal support surface, and the support portion is located above the keyboard body; The preset position is defined as the upper end position of the terminal device; The direction of the pressing force F is perpendicular to the third wall surface and downward; The stable state is defined as a state in which the keyboard body does not flip relative to the horizontal bearing surface.

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