Terminal equipment and Bluetooth transmitting device

Abstract

The utility model discloses a terminal device. The concave cavity is provided with a bottom wall and a peripheral wall arranged around the bottom wall, and the first side wall is provided with a first opening. The grounding device is attached to the end, close to the first side wall, of the second side wall and comprises a first wall face and a second wall face which are oppositely arranged, the first wall face is provided with a first wear-resisting part and a copper leaking position, and the copper leaking position is arranged between the first wear-resisting part and the first opening in the first direction. The first electronic device is configured to move in the first direction, so that the first protruding piece is arranged in the first opening, and the metal assembly abuts against the copper leaking position. Wherein the friction coefficient between the first wear-resistant part and the metal assembly is lower than that between the copper leakage position and the metal assembly. In the application, when the metal assembly moves along the first direction along with the first electronic device, the metal assembly slides on the first wear-resistant part to reduce friction to the copper leakage position, so that the technical problem that the electrostatic discharge device fails due to the fact that a copper sheet on the copper leakage position is easy to wear is solved.

Description

Technical Field

[0001] The present application relates to the technical field of industrial control anti-ESD, and in particular to a terminal device and a Bluetooth signaling device. Background Art

[0002] Electrostatic discharge (ESD) is the sudden flow of electricity between two objects with different electrical potentials. When static electricity built up on an object comes into contact with another object with a different electrical potential, a current is generated.

[0003] In existing technologies, electrostatic discharge (ESD) devices often use copper metal to abut the metal being grounded. Because the coefficient of friction between copper and the grounded metal is low, the copper metal is easily worn when the grounded metal is placed against it, causing the ESD device to fail. Utility Model Content

[0004] The primary purpose of this application is to provide a terminal device and a Bluetooth transmitter to address the technical problem that, in existing technologies, electrostatic discharge devices often use copper metal to abut against a grounded metal. Due to the low coefficient of friction between copper and the grounded metal, the copper sheet is easily worn when the grounded metal is placed against it, resulting in failure of the electrostatic discharge device.

[0005] To achieve the above objectives, the present application proposes a terminal device, comprising:

[0006] A housing, wherein the housing is provided with a concave cavity, the concave cavity having a bottom wall and a peripheral wall arranged around the bottom wall, the peripheral wall including a first side wall and a second side wall adjacent to each other, the first side wall being provided with a first opening, and the axial direction of the first opening being a first direction;

[0007] a grounding device, the grounding device being attached to an end of the second side wall adjacent to the first side wall, the grounding device comprising a first wall surface and a second wall surface disposed opposite each other, the first wall surface being provided with a first wear-resistant member and a copper leakage position, the copper leakage position being disposed between the first wear-resistant member and the first opening along the first direction;

[0008] a first electronic device comprising a first protruding member and a metal component, wherein the first electronic device is configured to move along the first direction so that the first protruding member is disposed in the first opening and the metal component abuts against the copper leak position;

[0009] Wherein, the friction coefficient between the first wear-resistant part and the metal component is lower than the friction coefficient between the copper leakage point and the metal component.

[0010] In some embodiments, the terminal device includes a second electronic device, the housing includes a second opening, the grounding device includes a first connection area, the first connection area is arranged on the second opening, and the second electronic device is configured to pass through the second opening and connect to the first connection area.

[0011] In some embodiments, the projection plane is set to be parallel to the plane of the second side wall, the first connection area forms a first orthographic projection on the projection plane, the leaking copper is located on the projection plane to form a second orthographic projection, and the first orthographic projection partially overlaps with the second orthographic projection.

[0012] In some embodiments, the grounding device includes a second connection area, the second connection area is provided on the second wall surface, and the second connection area is connected to the first electronic device, so that the second electronic device is electrically connected to the first electronic device.

[0013] In some embodiments, the grounding device includes a second wear-resistant part, the second wear-resistant part is arranged on the first wall surface, the second connection area forms a third orthographic projection on the projection plane, the second wear-resistant part forms a fourth orthographic projection on the projection plane, and the third orthographic projection partially overlaps with the fourth orthographic projection.

[0014] In some embodiments, there are a plurality of second openings, and the copper drain portion is partially disposed on each of the second openings, such that the second electronic device is configured to be connected to the copper drain portion through each of the second openings.

[0015] In some embodiments, the grounding device includes a bent portion, and the bent portion is provided between the first connection area and the first wear-resistant part.

[0016] In some embodiments, the thickness of the first wear-resistant part is A, and the thickness A satisfies: 0.05 mm ≤ A ≤ 0.2 mm.

[0017] In some embodiments, the grounding device includes a double-sided adhesive layer, and the double-sided adhesive layer is provided on the second wall surface for connecting the grounding device and the housing.

[0018] A second aspect of the present application further provides a Bluetooth signaling device, comprising:

[0019] The terminal device described in any one of the above embodiments;

[0020] A signal generator is connected to the first electronic device.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The present application proposes a terminal device, including a shell, a grounding device and a first electronic device. The shell is provided with a concave cavity, the concave cavity has a bottom wall and a peripheral wall arranged around the bottom wall, the peripheral wall includes a first side wall and a second side wall adjacent to each other, and the first side wall is provided with a first opening. The grounding device is attached to one end of the second side wall adjacent to the first side wall, the grounding device includes a first wall surface and a second wall surface arranged opposite to each other, a first wear-resistant part and a copper leakage position are provided on the first wall surface, and the copper leakage position is provided between the first wear-resistant part and the first opening along the first direction. The first electronic device includes a first protrusion and a metal component, and the first electronic device is configured to move along the first direction so that the first protrusion is provided in the first opening, and the metal component abuts against the copper leakage position. Wherein, the friction coefficient between the first wear-resistant part and the metal component is lower than the friction coefficient between the copper leakage position and the metal component. In the present application, in the first direction, a first wear-resistant part is provided on the side of the copper leakage position away from the first opening, so that when the first electronic device is configured to move along the first direction, the metal component moves with the first electronic device, and the metal component first abuts against the first wear-resistant part and slides on the first wear-resistant part to reduce friction on the copper leakage position, so as to solve the technical problem that the copper sheet on the copper leakage position is easily worn, resulting in failure of the electrostatic discharge device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 the structures shown in these drawings without paying any creative work.

[0024] Figure 1 This is a first side view schematic diagram of the first grounding device in an embodiment of the present application; wherein, the line of sight in the figure is along the direction from the first wall surface to the second wall surface, and the grounding device includes a first wear-resistant part, a copper leakage position, a second wear-resistant part, and a bent portion;

[0025] Figure 2 This is a second side view schematic diagram of the first grounding device according to an embodiment of the present application; wherein, in the figure, the line of sight is along the direction from the second wall surface to the first wall surface, and the grounding device includes a first connection area, a second connection area, a double-sided adhesive layer, and a bent portion;

[0026] Figure 3 This is a cross-sectional schematic diagram of a first terminal device in an embodiment of the present application; wherein the housing includes a concave cavity, a bottom wall, and an outer peripheral wall, and the first electronic device includes a first protrusion and a metal component;

[0027] Figure 4This is a first side view schematic diagram of the first terminal device in an embodiment of the present application; wherein the housing includes a cavity, a bottom wall, and an outer peripheral wall, and the first electronic device includes a first protrusion and a metal component;

[0028] Figure 5 This is a second side view schematic diagram of the first terminal device in the embodiment of the present application; wherein the housing includes a second opening, and the second electronic device is connected to the first electronic device through the second opening;

[0029] Figure 6 This is a partially enlarged schematic diagram of the first terminal device in the embodiment of the present application; wherein the figure shows the thickness A of the first wear-resistant part;

[0030] Figure 7 This is a schematic diagram of the first Bluetooth signaling device in the embodiment of the present application.

[0031] Description of Figure Numbers:

[0032] Terminal device 10;

[0033] Housing 100;

[0034] cavity 110;

[0035] bottom wall 120;

[0036] peripheral wall 130;

[0037] a first side wall 131;

[0038] a second side wall 132;

[0039] first opening 133;

[0040] a second opening 134;

[0041] Grounding device 200;

[0042] First wall 210;

[0043] First wear-resistant member 211;

[0044] Leak copper position 212;

[0045] Second wear-resistant member 213;

[0046] Second wall 220;

[0047] a first connection region 221;

[0048] a second connection region 222;

[0049] Double-sided adhesive layer 223;

[0050] curved portion 230;

[0051] The first electronic device 300;

[0052] The first protruding member 310;

[0053] The metal assembly 320;

[0054] The second electronic device 400;

[0055] The Bluetooth signal transmitting device 20;

[0056] The signal generator 30;

[0057] The first direction X.

[0058] The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0060] It should be noted that if the present application involves directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.

[0061] In addition, when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements can be present therebetween.

[0062] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, if "and / or", "and / or" or "and / or" appears throughout the text, its meaning includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0063] In the prior art, the electrostatic discharge device often uses copper metal to abut against the metal to be grounded to perform grounding. Since the friction coefficient between the copper metal and the metal to be grounded is low, the copper sheet is more prone to wear when placing the metal to be grounded against the copper sheet, resulting in failure of the electrostatic discharge device.

[0064] To achieve the above object, the present application provides a terminal device 10, see Figures 1 to 6 , comprising a shell 100, a grounding device 200 and a first electronic device 300. The terminal device 10 is configured to communicate with the outside through the first electronic device 300. It should be noted that the first electronic device 300 includes a plurality of electronic components, and each electronic component needs to be grounded to achieve the effect of electrostatic discharge.

[0065] The shell 100 is provided with a cavity 110. The cavity 110 can have various shapes. In some embodiments, the cavity 110 can be a cuboid. In other embodiments, the cavity 110 can be a cylinder. In other embodiments, the cavity 110 can be a polygon, etc. The embodiments of the present application take the cuboid cavity 110 as an example. The cavity 110 has a bottom wall 120 and a peripheral wall 130 arranged around the bottom wall 120. In the embodiments of the present application, the peripheral wall 130 arranged around the bottom wall 120 is a plurality, and in the cuboid cavity 110, the number of peripheral walls 130 is 4. The peripheral wall 130 includes a first side wall 131 and a second side wall 132 adjacent to each other, that is, the included angle between the first side wall 131 and the second side wall 132 is angle B, and the angle B satisfies: 0°<B≤90°. The first side wall 131 is provided with a first opening 133, and the axis direction of the first opening 133 is a first direction X. It should be noted that the first opening 133 can have various structures. In some embodiments, the first opening 133 can be a rectangle. In other embodiments, the first opening 133 can be a circle. In other embodiments, the first opening 133 can be a polygon.

[0066] The grounding device 200 is attached to one end of the second side wall 132 adjacent to the first side wall 131, that is, with the center of the second side wall 132 as the base point, the grounding device 200 is arranged between the center of the second side wall 132 and the first side wall 131. The grounding device 200 includes oppositely arranged first and second wall surfaces 210 and 220. It should be noted that the grounding device 200 includes a copper sheet arranged therein for grounding. In some embodiments, the first wall surface 210 is a planar wall. In other embodiments, the second wall surface 220 is a planar wall. The first wall surface 210 is provided with a first wear-resistant piece 211 and a copper leakage position 212. In some embodiments, the first wear-resistant piece 211 and the copper leakage position 212 are connected by welding. In some embodiments, in the grounding device 200, the first wear-resistant piece 211 is arranged on the copper sheet. Further, the wall surface of the metal assembly 320 abutting against the first wear-resistant piece 211 is a third wall surface, the wall surface of the metal assembly 320 abutting against the copper leakage position 212 is a fourth wall surface, and the distance between the third wall surface and the fourth wall surface is C, and the distance C satisfies: 0mm<C≤0.2mm. Exemplarily, the distance C can be 0.04mm, 0.08mm, 0.12mm, 0.16mm, 0.20mm, etc. Along the first direction X, the copper leakage position 212 is arranged between the first wear-resistant piece 211 and the first opening 133. It should be noted that the copper leakage position 212 refers to the part of the copper metal exposed in the grounding device 200, so as to ground the components abutting against the copper leakage position 212, so as to release the ESD on the components.

[0067] The first electronic device 300 comprises a first protruding member 310 and a metal component 320. In some embodiments, the first protruding member 310 is an antenna device for receiving external electrical signals. The first electronic device 300 is configured to move along a first direction X such that the first protruding member 310 is disposed in the first opening 133 and the metal component 320 abuts the copper-free area 212. By moving the first electronic device 300 along the first direction X, the first protruding member 310 is disposed in the first opening 133 to fix the position of the first protruding member 310 and the metal component 320 abuts the copper-free area 212 such that the metal component 320 is grounded to release ESD on the metal component 320. It is noted that when installing or replacing the first electronic device 300 in the grounding device 200, the first electronic device 300 needs to be moved along the first direction X to take out or place the first electronic device 300. In some embodiments, the material of the first wear-resistant member 211 is metal. For example, the material of the first wear-resistant member 211 can be steel alloy.

[0068] The coefficient of friction between the first wear-resistant member 211 and the metal component 320 is lower than the coefficient of friction between the copper-free area 212 and the metal component 320. It is noted that the coefficient of friction is the ratio of normal pressure and frictional force between two substances. In the present application, the coefficient of friction refers to the dynamic coefficient of friction. In the first direction X, the side of the copper-free area 212 away from the first opening 133 is provided with the first wear-resistant member 211, such that when the first electronic device 300 is configured to move along the first direction X, the metal component 320 first abuts the first wear-resistant member 211, slides on the first wear-resistant member 211, and then moves to the copper-free area 212. In the prior art, the metal component first abuts the copper-free area, slides on the copper-free area to the corresponding position. Compared with the prior art, in the present application, the copper-free area 212 is replaced by the first wear-resistant member 211 to change the distance of the friction received by the copper-free area 212, so as to reduce the friction on the copper-free area 212, to solve the technical problem that the copper sheet on the copper-free area 212 is easily worn out, causing the electrostatic discharge device to fail. Moreover, the grounding device 200 in the present application is adapted to be directly modified in the grounding device 200 in the prior art to obtain the grounding device 200 in the present application, so as to reduce the manufacturing steps of the grounding device 200 and reduce the manufacturing cost of the grounding device 200.

[0069] The terminal device 10 comprises a second electronic device 400, as shown in Figure 5, the housing 100 includes a second opening 134. It should be noted that the second opening 134 can have various structures. In some embodiments, the second opening 134 can be rectangular. In other embodiments, the second opening 134 can be circular. In other embodiments, the second opening 134 can be polygonal. The grounding device 200 includes a first connection area 221. The first connection area 221 is provided on the second opening 134, that is, the second electronic device 400 along the path from the second opening 134 to the first connection area 221 is configured to pass through the second opening 134 and be connected to the first connection area 221. In some embodiments, the first connection area 221 is grounded to release ESD on the second electronic device 400.

[0070] The projection plane is set to be a plane parallel to the second side wall 132, the first connection area 221 forms a first orthographic projection on the projection plane, and the copper leakage position 212 forms a second orthographic projection on the projection plane. The first orthographic projection partially overlaps with the second orthographic projection, so that when in working state, the metal component 320 abuts against the copper leakage position 212 to provide support to the copper leakage position 212, so that when the second electronic device 400 is connected to the first connection area 221, the metal component 320 provides support to the second electronic device 400.

[0071] The grounding device 200 includes a second connection region 222 disposed on the second wall 220. In some embodiments, the first connection region 221 is electrically connected to the second connection region 222. In some embodiments, the first connection region 221 and the second connection region 222 are spaced apart in the grounding device 200. The second connection region 222 is connected to the first electronic device 300, thereby electrically connecting the second electronic device 400 to the first electronic device 300.

[0072] The grounding device 200 includes a second wear-resistant member 213, see Figure 1 as well as Figure 2 In some embodiments, the second wear-resistant member 213 is configured to abut against the first electronic device 300 to provide support for the first electronic device 300. The second wear-resistant member 213 is disposed on the first wall 210, and the second connection region 222 forms a third orthographic projection on the projection plane. The second wear-resistant member 213 forms a fourth orthographic projection on the projection plane, and the third orthographic projection partially overlaps with the fourth orthographic projection, so that the second wear-resistant member 213 supports the second connection region 222 to ensure a stable connection between the second grounding device 200 and the first electronic device 300 when the second connection region 222 is connected to the first electronic device 300.

[0073] There are multiple second openings 134. Figure 5For example, the number of second openings 134 can be 10. A copper drain position 212 is provided on each second opening 134, so that the second electronic device 400 is configured to be connected to the copper drain position 212 through each second opening 134, so that the second electronic device 400 is grounded, thereby dissipating ESD on the second electronic device 400. In some embodiments, multiple second electronic devices 400 are connected to the second opening 134, and each second electronic device 400 is grounded.

[0074] The grounding device 200 includes a curved portion 230, which is disposed between the first connection region 221 and the first wear-resistant member 211. It should be noted that the curved portion 230 includes two spaced arcs and a straight edge connecting the arcs. In some embodiments, the arcs of the arcs are at the same point. Furthermore, the arcs have curvatures D1 and D2, respectively, and the curvature D1 satisfies: 0° <D1≤90°,示例性的弧度D1可以为10°、20°、30°、40°、50°、60°、70°、80°、90°;弧度D2满足:0°<D2≤90°,示例性的弧度D2可以为10°、20°、30°、40°、50°、60°、70°、80°、90°。需要说明的是,通过调整弧度,以调整第一耐磨件211以及第二耐磨件213上的工作区域。在一些实施例中,第一耐磨件211设于凹腔110的第二侧壁132,第二耐磨件213设于凹腔110的底壁120。在另一些实施例中,第一耐磨件211设于凹腔110的第二侧壁132,外周壁130还包括与第二侧壁132相邻的第三侧壁,第二耐磨件213设于凹腔110的第三侧壁。进一步的,第三侧壁与第一侧壁131相对布置,以使得第一开口133与第二耐磨件213之间相对布置。

[0075] The thickness of the first wear-resistant part 211 is A, see Figure 6, the thickness A satisfies: 0.05mm≤A≤0.2mm, and exemplary thickness A can be 0.05mm, 0.1mm, 0.15mm, 0.2mm, and so on. It should be noted that, since the metal component 320 first abuts the first wear-resistant part 211, slides on the first wear-resistant part 211, and then moves to the copper leakage position 212, the thickness A of the first wear-resistant part 211 should be moderate. If the thickness A of the first wear-resistant part 211 is large, when the first electronic device 300 moves along the first direction X at the same position, the pressure of the metal component 320 on the first wear-resistant part 211 of the first electronic device 300 increases, resulting in a decrease in the service life of the first wear-resistant part 211. If the thickness A of the first wear-resistant part 211 is small, the anti-friction ability of the first wear-resistant part 211 decreases, resulting in a decrease in the service life of the first wear-resistant part 211. Therefore, the thickness of the first wear-resistant part 211 is moderate to adapt to the metal component 320.

[0076] The grounding device 200 includes a double-sided tape layer 223. It should be noted that the double-sided tape layer 223 is provided with multiple double-sided tapes for attaching the grounding device 200 to the housing 100, ensuring a stable connection between the housing 100 and the grounding device 200. In some embodiments, the double-sided tape includes 3M467 type double-sided tape. Double-sided tape with higher adhesion further stabilizes the connection between the housing 100 and the grounding device 200. The double-sided tape layer 223 is provided on the second wall 220 to connect the grounding device 200 to the housing 100. In some embodiments, the double-sided tape layer 223 is provided on the second wall 220 and is provided between the first connection area 221 and the second connection area 222 to increase the area of ​​the double-sided tape layer 223. In some embodiments, the double-sided tape layer 223 is partially provided on the curved portion 230 to provide a connection to the curved portion 230.

[0077] The second aspect of the present application also provides a Bluetooth signaling device 20, see Figure 7 , comprising any one of the terminal devices 10 in the above embodiments and a signal generator 30. The signal generator 30 is connected to the first electronic device 300, and is used to receive or release electrical signals to the outside world.

[0078] It should be noted that other contents of the signal generator 30 and the Bluetooth signal transmitting device 20 disclosed in this application can be found in the prior art and will not be described in detail here.

[0079] In addition, it should be noted that the preferred embodiments of the present application are described in the specification and its drawings only for the purpose of better understanding the present application, and the present application can be implemented in many different forms, and is not limited to the embodiments described in the specification, and these embodiments are not intended to be additional limitations on the content of the present application, and the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Furthermore, each of the above technical features continues to be combined with each other, forming various embodiments not listed above, which are all considered to be within the scope of the present application. Furthermore, for those skilled in the art, the above description can be improved or changed, and all these improvements and changes shall fall within the scope of protection of the claims of the present application.

Claims

1. A terminal device, characterized in that: include: A housing, wherein the housing is provided with a concave cavity, the concave cavity having a bottom wall and a peripheral wall arranged around the bottom wall, the peripheral wall including a first side wall and a second side wall adjacent to each other, the first side wall being provided with a first opening, and the axial direction of the first opening being a first direction; a grounding device, the grounding device being attached to an end of the second side wall adjacent to the first side wall, the grounding device comprising a first wall surface and a second wall surface disposed opposite each other, the first wall surface being provided with a first wear-resistant member and a copper leakage position, the copper leakage position being disposed between the first wear-resistant member and the first opening along the first direction; a first electronic device comprising a first protruding member and a metal component, wherein the first electronic device is configured to move along the first direction so that the first protruding member is disposed in the first opening and the metal component abuts against the copper leak position; Wherein, the friction coefficient between the first wear-resistant part and the metal component is lower than the friction coefficient between the copper leakage point and the metal component.

2. The terminal device according to claim 1, wherein: The terminal device includes a second electronic device, the housing includes a second opening, the grounding device includes a first connection area, the first connection area is arranged on the second opening, and the second electronic device is configured to pass through the second opening and connect to the first connection area.

3. The terminal device according to claim 2, wherein: The projection plane is set to be parallel to the plane of the second side wall, the first connection area forms a first orthographic projection on the projection plane, the copper leak is located on the projection plane to form a second orthographic projection, and the first orthographic projection partially overlaps with the second orthographic projection.

4. The terminal device according to claim 3, wherein: The grounding device includes a second connection area, the second connection area is provided on the second wall surface, and the second connection area is connected to the first electronic device, so that the second electronic device is electrically connected to the first electronic device.

5. The terminal device according to claim 4, wherein: The grounding device includes a second wear-resistant part, which is arranged on the first wall surface. The second connection area forms a third orthographic projection on the projection plane. The second wear-resistant part forms a fourth orthographic projection on the projection plane. The third orthographic projection partially overlaps with the fourth orthographic projection.

6. The terminal device according to claim 2, wherein: There are a plurality of second openings, and the copper drain portion is partially provided on each of the second openings, so that the second electronic device is configured to be connected to the copper drain portion through each of the second openings.

7. The terminal device according to claim 2, wherein: The grounding device includes a bent portion, which is provided between the first connecting area and the first wear-resistant part.

8. The terminal device according to claim 1, wherein: The thickness of the first wear-resistant part is A, and the thickness A satisfies: 0.05 mm ≤ A ≤ 0.2 mm.

9. The terminal device according to claim 1, wherein: The grounding device includes a double-sided adhesive layer, which is arranged on the second wall surface to connect the grounding device and the shell.

10. A Bluetooth signal transmitting device, characterized in that: include: The terminal device according to any one of claims 1 to 9; A signal generator is connected to the first electronic device.

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