Clamping device for intelligent equipment

Abstract

The utility model relates to a clamping device for intelligent equipment, which comprises a host, a host control board and a switch connected with the host control board are arranged in the host, the clamping device further comprises a clamping piece connected with the host, the clamping piece comprises a first clamping arm connected with the host, at least one group of conductive electrodes are arranged in the first clamping arm, and the conductive electrodes are electrically connected with the host control board. The clamping piece further comprises a second clamping arm corresponding to the first clamping arm, the second clamping arm is rotationally connected with the host and generates clamping force with the first clamping arm to form a clamping area, the intelligent device is arranged in the clamping area and clamped by the clamping piece, the screen faces the first clamping arm, the conductive electrode penetrates through the first clamping arm, and the conductive electrode is clamped by the clamping piece. The first control panel provides an electric signal for the conductive electrode and the conductive electrode provides an input signal for the intelligent device. The intelligent device is clamped through the clamping force between the movable clamping arm and the fixed clamping arm, the conductive electrode provides an input signal for the screen, the intelligent device acts according to the input signal, adjustment is conducted in cooperation with a remote controller and other modes, and operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of clamping devices for intelligent devices, in particular to a clamping device for intelligent devices. Background Art

[0002] With the rapid development of electronic technology and the popularization of computers, paper books, which used to be the main carrier of information, began to pale in comparison and gradually gave way to e-books. Then an e-book page turning device appeared, which is a device used for reading e-books or switching audio and video on mobile phones and digital products. This product is also equipped with a remote control, which can realize e-book page turning, audio and video switching and other operations at a distance. It is very convenient to use and is deeply loved by people. The e-book page turning device can realize remote control of the action of the smart device by clamping it on the smart device. However, the existing clamping device often uses the host as a set of clamping arms, and then the movable clamping arm is connected to the host through a rotating shaft, and the connection is often at the outer edge. When the clamping force is applied, it is easy to cause the clamping device to slip out of the hand due to the different weights of the movable clamping arm and the host, and the clamping operation has certain inconveniences; at the same time, the clamping device can play a clamping effect, but cannot provide a certain support force for the device, and the use function is relatively limited, so the utility model makes improvements on this.

[0003] Chinese patent publication number CN213958246U discloses a wireless electronic book page turner, including a page turner body and a remote controller for transmitting a touch signal to control the page turner body to realize a capacitive trigger page turn signal; the page turner body includes an upper shell and a lower shell, the upper shell and the lower shell are connected by a support seat, a spring is provided at the connection between the upper shell and the lower shell, a capacitive signal contact is provided in the upper shell, a circuit board is provided in the lower shell, and the capacitive signal contact is electrically connected to the circuit board through a touch signal line. The utility model adopts a wireless remote control method to control the page turning of the electronic book, which can be controlled within a certain distance; it can be viewed at a certain distance, effectively prevent myopia, and reduce the pain and friction of fingers sliding on the screen for a long time. It is convenient to control the page turning, and it is easy to clamp and fix it on the capacitive screen. The page turner recorded in the patent is difficult to keep the clamping part parallel to the device when clamping, and the clamping stability is poor. Moreover, since the rotating shaft is at the tail end, it is easy to cause the clamping device to fall out of the hand after the tail is stressed when pressing, and there is a certain inconvenience in operation.

[0004] Chinese patent publication number CN219673779U discloses a clamping structure of an electronic book page turning device, specifically relating to the field of electronic book page turning devices, including a host, the host including a clip body, a avoidance cavity is provided at the bottom of one end of the clip body, at least one set of clamping parts is installed in the avoidance cavity; the clamping part includes a mounting seat, a groove is provided on the upper surface of the mounting seat, and a first circuit board is provided in the groove. The utility model is provided with an avoidance cavity at the front end of the clip body, and a clamping part is installed in the avoidance cavity, wherein the clamping part is rotatably connected with the clip body through a rotating shaft, and the front and rear end cavity depths of the avoidance cavity are less than the depth of the middle cavity, so that the angle of rotation of the clamping part is larger, and it can be adapted to a variety of mobile phones or digital products of different thicknesses, and the anti-slip pad on the clamping part fits better with the screen of the mobile phone or digital product, and has higher stability, effectively increasing the use scenarios of the product, and also enhancing the user's experience. The rotating shaft of the patent is also placed at the tail end, and the local force when pressed will cause the clamping device to fall out of the hand, and the clamping operation is also inconvenient. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing clamping device often uses the main machine as a set of clamping arms, and then the movable clamping arm is connected to the main machine through a rotating shaft, and the connection point is often at the outer edge. When the clamping force is applied, it is easy for the clamping device to slip out of the hand due to the different weights of the movable clamping arm and the main machine, and the clamping operation is somewhat inconvenient; at the same time, the clamping device can only play a clamping effect, but cannot provide a certain supporting force for the device, and the use function is relatively limited. In view of the above-mentioned defects of the prior art, a clamping device for smart devices is provided.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A clamping device for a smart device is constructed, comprising a host, a host control board and a switch connected to the host control board are arranged in the host, the clamping device also comprises a clamping member connected to the host, the clamping member comprises a first clamping arm connected to the host, at least one group of conductive electrodes are arranged in the first clamping arm, the conductive electrodes are electrically connected to the host control board, the clamping member also comprises a second clamping arm corresponding to the first clamping arm, the second clamping arm is rotatably connected to the host and generates a clamping force with the first clamping arm to form a clamping area, the smart device is placed in the clamping area and clamped by the clamping member, and the screen of the smart device faces the first clamping arm, the conductive electrodes pass through the first clamping arm, the first control board provides an electrical signal to the conductive electrodes, and the conductive electrodes provide an input signal to the smart device to activate the smart device.

[0008] Preferably, the clamping member is arranged vertically to the host, the first clamping arm is fixedly connected to the host, a through groove is provided at the connection between the first clamping arm and the host, and a second control board connected to the conductive electrode is provided in the first clamping arm, the first control board is electrically connected to the second control board, the connecting wire passes through the through groove, and the second clamping arm is rotationally connected to the host through a rotating shaft.

[0009] Preferably, a torsion spring is provided at the connection between the second clamp arm and the host. When the second clamp arm is pressed, the torsion spring is compressed and the clamping piece opens. When the pressing force of the second clamp arm is released, the torsion spring resets and the clamping piece is clamped. A clamping part is provided at the end of the second clamp arm away from the host, and the clamping part and the first clamp arm clamp the smart device.

[0010] Preferably, the clamping portion and the second clamping arm are rotatably connected via a rotating shaft, the rotating shaft keeps the clamping portion parallel to the contact surface of the smart device, a recessed cavity is provided on the clamping portion facing the clamping area, an anti-slip pad is provided in the recessed cavity, a sinking area is provided on the first clamping arm, the conductive electrode passes through the sinking area, and an anti-slip pad is provided in the sinking area, the conductive electrode contacts the anti-slip pad, and when the clamping area clamps the smart device, the anti-slip pad contacts the smart device.

[0011] Preferably, a torsion spring fixing block is provided on the main machine, one end of the torsion spring abuts against the torsion spring fixing block, the torsion spring fixing block limits the end, and two groups of limit blocks are provided on the second clamp arm corresponding to the other end of the torsion spring, a travel groove is formed between the two groups of limit blocks, and the other end of the torsion spring moves in the travel groove.

[0012] Preferably, the first clamp arm and the second clamp arm can be folded relative to the host so that the first clamp arm and the second clamp arm are parallel to the host, and the conductive electrode is elastically arranged in the first clamp arm, and when the smart screen contacts the conductive electrode, a compressive force can be generated on the conductive electrode and the contact can be maintained.

[0013] Preferably, the host comprises a left shell and a right shell that are detachably connected, a chamber is formed in the left shell and the right shell, a host control board is placed in the chamber, and a battery for powering the host control board and a charging port for charging the battery are provided in the chamber.

[0014] Preferably, the left shell and the right shell are detachably connected via a snap-fit ​​structure, the left shell is provided with a convex strip extending outward, the right shell is provided with a lower step corresponding to the convex strip, the convex strip is placed at the lower step to limit the left shell and the right shell, and the left shell is provided with a connecting hole, and the right shell is provided with a connecting column corresponding to the connecting hole.

[0015] Preferably, a limiting hole is provided on the host control panel corresponding to the connecting hole and / or the connecting column, and a support platform is provided on the connecting column and / or the connecting column to provide supporting force for the host control panel, and the switch also includes a latch, and a slot is provided on the left shell body corresponding to the latch.

[0016] Preferably, the first clamp arm is hollow and open on one side, an anti-slip pad is provided at the opening, a groove is provided in the first clamp arm, a protrusion is provided on the anti-slip pad corresponding to the groove, and a connecting column is provided on the anti-slip pad, a connecting hole is provided in the first clamp arm corresponding to the connecting column, the connecting column is inserted into the connecting hole, and the protrusion is stuck in the groove to generate friction to connect the anti-slip pad with the first clamp arm, and the lower end surface of the first clamp arm is flush with the bottom surface of the anti-slip pad.

[0017] The beneficial effect of the utility model is that the intelligent device is clamped by the clamping force between the movable clamp arm and the fixed clamp arm, and the conductive electrode provides an input signal to the screen and the intelligent device acts according to the input signal, and is adjusted by means of a remote control, etc., so that the operation is more convenient. The rotating clamping part arranged on the movable clamp arm makes the clamping part and the intelligent device always parallel, and the clamping is more stable. Moreover, since the movable clamp arm and the fixed clamp arm are in a vertical state with the host, the clamping device after the support can play the effect of a bracket to a certain extent, and the functionality is higher. The torsion spring is provided with a limited position structure at both ends to avoid the movement of the torsion spring when it rotates, and the torsion spring does not contact the rotating shaft arm, which reduces the friction force when the torsion spring rotates, and the pressing force during clamping is smaller. Moreover, since the clamping piece is arranged vertically with the host, the vertical force applied to the movable clamp arm is applied at the connection, so that the clamping device is prevented from slipping out of the hand when the movable clamp arm is pressed. The clamping device as a whole is fixed and supported in the form of a buckle, which avoids the use of screws and other methods for fixing, saves costs, and is more convenient to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. 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 these drawings without creative work:

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the clamping state of the clamping device of a preferred embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the clamping device in the open state of a preferred embodiment of the utility model;

[0021] Figure 3 This is a schematic diagram of the exploded structure of the clamping device in the open state of a preferred embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the axial structure of the left housing of the main engine of a preferred embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the bottom-view axial structure of the left housing of the main machine of a preferred embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the left housing of the host on the right visual axis side of a preferred embodiment of the utility model;

[0025] Figure 7 This is a schematic diagram of the axial structure of the right housing of the host computer in a preferred embodiment of the utility model;

[0026] Figure 8 This is a schematic diagram of the axial structure of the anti-slip mat of a preferred embodiment of the utility model;

[0027] Fig. 9 This is a schematic diagram of the axial structure of the host control board of a preferred embodiment of the utility model;

[0028] Fig.10 This is a schematic diagram of the shaft side structure of a switch of a preferred embodiment of the utility model;

[0029] Fig.11 This is a schematic diagram of the axial structure of the movable clamping arm of a preferred embodiment of the utility model;

[0030] Fig.12 This is a schematic diagram of the axial structure of the clamping part of a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be described clearly and completely in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0032] A clamping device for a smart device in a preferred embodiment of the utility model; Figure 1 As shown in Figure 3, the main body 20 includes a main body control board 80 and a battery 90 for powering the main body control board. The main body 20 is also provided with a charging port 40 connected to the main body control board and charging the battery, and a button 10 connected to the main body control board and starting or shutting down the main body. The clamping device also includes a clamping member 30 vertically arranged with the main body, the clamping member includes a fixed clamping arm 301 fixedly connected with the main body, and a movable clamping arm 300 connected with the main body and rotatable relative to the main body. The opposite surfaces of the movable clamping arm and the fixed clamping arm form a clamping area. The movable clamping arm 300 rotates and generates a clamping force with the fixed clamping arm to clamp the smart device in the clamping area.

[0033] Specifically, Figure 3As shown in FIG. 6, the interior of the fixed clamp arm 301 is hollow to form a hollow cavity 3014. A through slot 3013 is provided at the connection between the fixed clamp arm and the shell. The through slot is connected to the hollow cavity, and a second control board 3011 is provided in the hollow cavity. The second control board is electrically connected to the host control board, and the connecting wire passes through the through slot and the hollow cavity. Two groups of electrode columns 3015 are provided on the second control board 3011. The electrode columns pass through the opposite surface of the fixed clamp arm and the movable clamp arm, and extend to the upper surface of the fixed clamp arm. When the smart device is clamped in the clamping area, the electrode column 3015 contacts the screen of the smart device, and the host control board inputs a signal to the electrode column, thereby realizing the input of the smart device. The size of the input signal or the different electrode column input electrical signals can realize the page turning of the screen of the smart device, long press recording, etc. to provide input signals. It can also be equipped with a remote control or the like to control the host control board for adjustment. Since this part of the content can be realized by using existing technology, it will not be described in detail here.

[0034] Furthermore, if Figure 3 As shown, in order to prevent the electrode column from affecting the screen of the smart device, the electrode column can be selected as an elastic electrode column, that is, when the electrode column contacts the screen, it can be compressed without affecting the transmission of the electrical signal to avoid damage to the screen. More groups of electrode columns can also be set, and different groups of electrode columns can cooperate with each other to realize different input signals of the smart device, thereby performing different operations. This part of the content can adopt the solution of the existing technology and will not be discussed in detail here. Figure 4 As shown, a sinking portion 3010 may also be provided on the clamping surface of the fixed clamp arm, a through hole passes through the fixed clamp arm and is disposed in the sinking portion, an anti-slip pad 702 may be provided in the sinking portion, and the electrode column contacts the anti-slip pad, and contacts the screen of the smart device through the anti-slip pad to achieve control of the screen of the smart device, and the anti-slip pad may also protect the screen of the smart device and prevent it from slipping after clamping.

[0035] Furthermore, if Figure 1 -4 and Fig.11As shown in FIG. 12, two sets of rotating shaft fixing arms 2000 are arranged at one end of the movable clamp arm 300 connected to the host, and the housing is provided with corresponding rotating shaft fixing arms, and each rotating shaft fixing arm is provided with a rotating shaft hole 2004, and the rotating shaft 50 passes through the rotating shaft hole to connect the movable clamp arm to the host. A torsion spring 60 is arranged on the clamp arm to generate a clamping force between the movable clamp arm and the host, and multiple sets of anti-skid protrusions 3000 are arranged at the end of the movable clamp arm away from the host, and applying pressure to the anti-skid protrusions can make the movable clamp arm rotate relative to the host. A shaft fixing arm 2000 is provided at one end of the movable clamping arm away from the host and facing the fixed clamping arm, and a shaft hole 2004 is provided on the shaft fixing arm. The clamping device also includes a clamping part 70 connected to the movable clamping arm, and a shaft fixing arm and a shaft hole are also provided on the clamping part corresponding to the shaft fixing arm and the shaft hole, and the movable clamping arm is connected to the clamping part through the shaft 50, and the clamping part can be rotated relative to the movable clamping. A recessed cavity 700 is provided on the side of the clamping part facing the fixed clamping arm, and an anti-skid gasket 702 is provided in the recessed cavity. When the smart device is placed in the holding area, the clamping part contacts the back of the smart device, and due to the rotating setting of the clamping part, the clamping part and the back of the smart device are always kept in a parallel state. At the same time, the anti-skid gasket can also prevent the clamping part from scratching the back of the smart device, and also increase the friction after clamping, so that the clamping is more stable.

[0036] Furthermore, if Figure 3 -4 and Fig.11 As shown, the host 200 is provided with a torsion spring fixing block 2001. One end of the torsion spring is connected to the torsion spring fixing block to prevent the end from moving left and right. The other end of the torsion spring fixing block contacts the movable clamp arm 300. The movable clamp arm is provided with two sets of limit blocks 3001. A travel groove 3002 is formed between the two sets of limit blocks. The other end of the torsion spring fixing block is placed in the travel groove. The limit block can prevent the torsion spring from moving left and right, and maintain parallel movement in the travel groove. At the same time, the length of the travel groove is both the moving travel of the torsion spring clamping and the moving travel of the movable clamp arm. At the same time, in order to reduce the friction during the clamping process, the torsion spring does not contact the rotating shaft fixing arm.

[0037] Furthermore, if Figure 5 and Figure 8As shown, the lower surface of the fixed clamp arm 300 is provided with an anti-skid pad 3011, and the anti-skid pad seals the hollow cavity 3014. The inner peripheral wall of the fixed clamp arm is provided with an anti-skid pad mounting platform 30140, and the anti-skid pad mounting platform is provided with multiple groups of grooves 30141. The anti-skid pad is provided with a mounting platform contact portion 30110 corresponding to the anti-skid pad mounting platform. When the anti-skid pad is installed on the fixed clamp arm, the mounting platform contact portion is placed on the anti-skid pad mounting platform, and the mounting platform contact portion is provided with the same number of protrusions 30111 corresponding to the groove, and the protrusions can be stuck in the groove. The friction force of the protrusions recessed in the groove can connect the anti-skid pad with the fixed clamp arm without the need to use screws for locking. In order to further increase the friction, multiple groups of connecting columns 2010 are provided on the anti-slip pad 3011, and connecting holes 30142 are provided in the hollow cavity corresponding to the connecting columns. The connecting columns are inserted into the connecting holes and the friction between them makes the anti-slip pad and the fixed clamp arm further connected and firm. After the connection, the bottom surface of the anti-slip pad is flush with the lower end of the fixed clamp arm. Since screw locking is not used, there is no need to drill holes, which reduces costs and ensures a tight connection.

[0038] Furthermore, if Figure 6 As shown in FIG. 7 , the host 20 includes a left host shell 200 and a right host shell 201. A host chamber 202 is formed between the left host shell and the right host shell. The host control board 80 and the battery 90 are both placed in the host chamber. The left host shell is provided with multiple groups of card slots 2005, and the right host shell is provided with buckles 2011 corresponding to the card slots. The buckles are inserted into the card slots to connect the left and right shells. The left host shell is also provided with a convex strip 2006, which is formed by vertically extending along the peripheral wall of the left shell, and the width of the convex strip is smaller than the width of the side wall of the left shell. The side wall of the convex strip close to the hollow cavity is flush with the inner wall of the left shell. The right shell is provided with a lower step 2012 corresponding to the convex strip. The convex strip is placed at the lower step to achieve sealing and pre-positioning connection between the left and right shells.

[0039] Furthermore, if Figure 6 -7 and Fig. 9 As shown, in order to facilitate the fixing of the control board, a plurality of groups of limiting holes 800 of different sizes are provided on the host control board 80, and a plurality of groups of connecting columns 2010 are provided on the corresponding limiting blocks on the right shell 201 of the host. The connecting columns are inserted into some small limiting holes to fix the host control board in the shell, and a connecting hole 2004 is provided on the corresponding connecting column on the left shell of the host. The connecting column is inserted into the connecting hole 30142 after passing through the limiting hole, and the connecting hole can also be connected to part of the connecting column after passing through the large limiting hole. A support platform 2008 connected to the connecting column and the connecting hole is also provided in the left shell. The host control board is placed on the support platform after passing through the connecting column and the connecting hole, and the support platform provides a certain support force for the host control board. A charging port fixing groove 2003 is provided on the left shell and the right shell corresponding to the charging port, and a switch fixing groove 2002 is provided on the corresponding switch.

[0040] Furthermore, if Figure 6 and Fig.10 As shown, the switch 10 includes a switch limiting portion 101 and an L-shaped clamping arm 100 extended from the switch limiting portion. The switch limiting portion is placed at the switch fixing groove to connect the switch to the housing. A switch clamping arm fixing groove 2007 is provided on the left housing 200 of the host corresponding to the L-shaped clamping arm. The L-shaped clamping arm is placed at the clamping arm fixing groove, thereby avoiding displacement of the switch after pressing due to frequent pressing of the switch.

[0041] When in use, the fingers apply pressing force to the anti-slip protrusion 3000 to activate the movable clamping arm 300, and the clamping device is placed in a suitable clamping area of ​​the smart device, with the screen of the smart device facing the fixed clamping arm. After the pressing force is released, the torsion spring causes the movable clamping arm to generate a clamping force on the smart device under its elastic force, and the clamping part automatically adjusts to a parallel state with the back according to the state of the back of the smart device. After clamping is completed, the electrical signal of the electrode column 3015 is adjusted by remote control of the host control panel, so that the electrode column provides input signals to the smart device to adjust the screen and state of the smart device, which makes the operation more convenient. In addition, since the clamping member 30 is vertical to the host, the clamping device can also act as a support frame at a certain angle to provide support for the smart device, which makes it more convenient to use.

[0042] It should be noted that in the present invention, the fixed clamp arm 301 is fixed to the housing and maintained vertically, and the connection between the fixed clamp arm and the host can also be set to a folding structure. When in use, the fixed clamp arm can be opened, and after use, the fixed clamp arm can be folded to reduce the storage volume. The movable clamp arm can also adopt the same folding structure to reduce the storage and transportation volume. The folding structure can be folded using the existing folding structure technical solution, which will not be described in detail here. And the smart devices in this application include smart phones, tablet computers, e-books, etc., which have touch screen functions, and can turn pages, switch screens, adjust volume, etc. after touching the screen, and can generate actions after providing input signals.

[0043] It should be understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A clamping device for a smart device, comprising a host, wherein a host control panel and a switch connected to the host control panel are arranged in the host, and the clamping device also comprises a clamping member connected to the host, characterized in that: The clamping member includes a first clamping arm connected to the host, at least one group of conductive electrodes are arranged in the first clamping arm, and the conductive electrodes are electrically connected to the host control board. The clamping member also includes a second clamping arm corresponding to the first clamping arm, and the second clamping arm is rotatably connected to the host and generates a clamping force with the first clamping arm to form a clamping area. The smart device is placed in the clamping area and clamped by the clamping member, and the screen of the smart device faces the first clamping arm. The conductive electrodes pass through the first clamping arm, and the first control board provides electrical signals to the conductive electrodes, and the conductive electrodes provide input signals to the smart device to activate the smart device.

2. The clamping device according to claim 1, characterized in that: The clamping member is arranged vertically to the host, the first clamping arm is fixedly connected to the host, a through slot is arranged at the connection between the first clamping arm and the host, and a second control board connected to the conductive electrode is arranged in the first clamping arm, the first control board is electrically connected to the second control board, the connecting wire passes through the through slot, and the second clamping arm is rotationally connected to the host through a rotating shaft.

3. The clamping device according to claim 2, characterized in that: A torsion spring is provided at the connection between the second clamp arm and the host. When the second clamp arm is pressed, the torsion spring is compressed and the clamping piece is opened. When the pressing force of the second clamp arm is released, the torsion spring is reset to clamp the clamping piece. A clamping part is provided at one end of the second clamp arm away from the host, and the clamping part and the first clamp arm clamp the smart device.

4. The clamping device according to claim 3, characterized in that: The clamping part and the second clamping arm are rotatably connected via a rotating shaft, and the rotating shaft keeps the clamping part parallel to the contact surface of the smart device. A recessed cavity is provided on the clamping part facing the clamping area, and an anti-slip pad is provided in the recessed cavity. A sinking area is provided on the first clamping arm, and the conductive electrode passes through the sinking area, and an anti-slip pad is provided in the sinking area. The conductive electrode contacts the anti-slip pad, and when the clamping area clamps the smart device, the anti-slip pad contacts the smart device.

5. The clamping device according to claim 3, characterized in that: The main machine is provided with a torsion spring fixing block, one end of the torsion spring is in contact with the torsion spring fixing block, and the torsion spring fixing block limits the end; two groups of limit blocks are provided on the second clamping arm corresponding to the other end of the torsion spring, a travel groove is formed between the two groups of limit blocks, and the other end of the torsion spring moves in the travel groove.

6. The clamping device according to claim 1, characterized in that: The first clamp arm and the second clamp arm can be folded relative to the host so that the first clamp arm and the second clamp arm are parallel to the host, and the conductive electrode is elastically arranged in the first clamp arm. When the smart screen contacts the conductive electrode, a compressive force can be generated on the conductive electrode to maintain contact.

7. The clamping device according to any one of claims 1 to 6, characterized in that: The host comprises a left shell and a right shell which are detachably connected, wherein a chamber is formed in the left shell and the right shell, a host control board is placed in the chamber, and a battery for supplying power to the host control board and a charging port for charging the battery are arranged in the chamber.

8. The clamping device according to claim 7, characterized in that: The left shell and the right shell are detachably connected via a snap-fit ​​structure, the left shell is provided with a convex strip extending outward, the right shell is provided with a lower step corresponding to the convex strip, the convex strip is placed at the lower step to limit the left shell and the right shell, and the left shell is provided with a connecting hole, and the right shell is provided with a connecting column corresponding to the connecting hole.

9. The clamping device according to claim 8, characterized in that: The host control panel is provided with a limiting hole corresponding to the connecting hole and / or the connecting column, and the connecting column and / or the connecting column are provided with a supporting platform to provide supporting force for the host control panel. The switch also includes a card ear, and a card slot is provided on the left shell body corresponding to the card ear.

10. The clamping device according to claim 1, characterized in that: The first clamp arm is hollow and open on one side, an anti-slip pad is provided at the opening, a groove is provided in the first clamp arm, a protrusion is provided on the anti-slip pad corresponding to the groove, and a connecting column is provided on the anti-slip pad, a connecting hole is provided in the first clamp arm corresponding to the connecting column, the connecting column is inserted into the connecting hole, and the protrusion is stuck in the groove to generate friction to connect the anti-slip pad and the first clamp arm, and the lower end surface of the first clamp arm is flush with the bottom surface of the anti-slip pad.

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