CN212278273U - A clamping jaw and cell phone stand for cell phone stand - Google Patents

Abstract

The utility model discloses a clamping jaw and cell phone stand for cell phone stand, it is including vertical arm lock, the inboard of vertical arm lock is equipped with silica gel pad and a plurality of fin that extend along vertical direction, silica gel pad is close to the root of vertical arm lock, the fin extends to the tip of vertical arm lock, silica gel pad with the fin all to the inboard protrusion of vertical arm lock, just the protrusion height of fin is greater than the protrusion height of silica gel pad. In the structure, the silica gel pad is mainly used for abutting against the side edge of the mobile phone, the vertical clamping arm and the silica gel pad on the fixed clamping arm can play a role in preventing the mobile phone from slipping, and meanwhile, the fins protrude inwards, so that the mobile phone can be blocked and limited from the front side of the mobile phone, and the mobile phone can be clamped more stably and reliably.

Description

A clamping jaw and cell phone stand for cell phone stand

Technical Field

The utility model relates to a cell phone stand especially relates to a clamping jaw and cell phone stand for cell phone stand.

Background

The mobile phone support is used for clamping a mobile phone and supporting the mobile phone at a desktop, an automobile center console and the like, in practical application, the mobile phone support generally depends on two symmetrically arranged clamping arms to clamp the mobile phone, meanwhile, the two clamping arms are driven to clamp and fix the mobile phone by utilizing the elastic force exerted by a spring, but the inner sides of the clamping arms and a mobile phone frame are generally in hard butt joint fit, or only one soft rubber cushion is arranged at the inner side of the clamping arm, although the structure can play a clamping limiting role on the mobile phone, the mobile phone is difficult to be reliably fixed, particularly under a vehicle-mounted environment, the mobile phone is influenced by jolt and vibration, and the mobile phone has the possibility of falling off and has potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's not enough, provide one kind can with cell-phone adhesion cooperation, clamping jaw and cell phone stand that the centre gripping stability is higher with the reliability simultaneously.

In order to solve the technical problem, the utility model adopts the following technical scheme.

The utility model provides a clamping jaw for cell phone stand, its is including vertical arm lock, the inboard of vertical arm lock is equipped with silica gel pad and a plurality of fin that extend along vertical direction, the silica gel pad is close to the root of vertical arm lock, the fin extends to the tip of vertical arm lock, the silica gel pad with the fin all to the inboard protrusion of vertical arm lock, just the protrusion height of fin is greater than the protrusion height of silica gel pad.

The utility model discloses an among the clamping jaw for cell phone stand, the silica gel pad mainly used with the side looks butt of cell-phone, borrow by vertical arm lock with silica gel pad in the fixed arm lock can play the antiskid to the cell-phone, simultaneously because the fin is inwards protruding, can also play to keep out and limiting displacement to the cell-phone from the cell-phone front side to more reliable and more stable centre gripping cell-phone.

Drawings

Fig. 1 is a structural diagram of the mobile phone holder of the present invention after holding a mobile phone;

fig. 2 is a side view of the mobile phone holder of the present invention;

fig. 3 is a perspective view of the mobile phone support of the present invention;

fig. 4 is a partially exploded view of the mobile phone support of the present invention;

fig. 5 is a first internal structure diagram of the mobile phone support of the present invention;

fig. 6 is a partially exploded view of the mobile phone support of the present invention;

fig. 7 is a partially exploded view of the mobile phone holder of the present invention;

fig. 8 is a partially exploded view of the mobile phone support of the present invention;

fig. 9 is a first structural view of the housing and the bracket according to the first embodiment of the present invention;

fig. 10 is a second structural view of the housing and the bracket according to the first embodiment of the present invention;

fig. 11 is a first structural view of the housing and the supporting claw according to the second embodiment of the present invention;

fig. 12 is a second structural view of the housing and the holding claw according to the second embodiment of the present invention;

fig. 13 is an exploded view of the housing and the holding claw according to the second embodiment of the present invention;

FIG. 14 is a first perspective view of the support mechanism;

FIG. 15 is a second perspective view of the support mechanism;

FIG. 16 is a first exploded view of the support mechanism;

FIG. 17 is a second exploded view of the support mechanism;

FIG. 18 is a view showing the structure of the vertical rod and the sliding block;

FIG. 19 is a first exploded view of a vertical clamp arm portion;

figure 20 is an exploded view of the vertical arm portion two.

Detailed Description

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Example one

With reference to fig. 19 to 20, the present embodiment provides a clamping jaw for a mobile phone support, which can be adhered to and matched with a mobile phone, and has higher clamping stability and reliability, the clamping jaw includes a vertical clamping arm 31, a silicone pad 310 and a plurality of fins 311 extending in a vertical direction are disposed on an inner side of the vertical clamping arm 31, the silicone pad 310 is close to a root of the vertical clamping arm 31, the fins 311 extend to an end of the vertical clamping arm 31, the silicone pad 310 and the fins 311 both protrude toward an inner side of the vertical clamping arm 31, and a protruding height of the fins 311 is greater than a protruding height of the silicone pad 310.

In the structure, the silica gel pad 310 is mainly used for abutting against the side edge of the mobile phone, the vertical clamping arm 31 and the silica gel pad on the fixed clamping arm 2 can play a role in preventing the mobile phone from slipping, and meanwhile, the fins protrude inwards, so that the mobile phone can be blocked and limited from the front side of the mobile phone, and the mobile phone can be clamped more stably and reliably.

Further, the silicone pad 310 includes a smooth surface. Specifically, the surface of the silicone pad 310 facing the side edge of the mobile phone is a smooth bright surface, and compared with a silicone pad with a rough surface or a matte surface, the bright surface structure can greatly improve the adhesion between the silicone pad and the side edge of the mobile phone, so that the mobile phone support can more reliably realize the function of clamping the mobile phone.

In the present embodiment, the plurality of fins 311 are parallel to each other.

Further, a connecting plate 312 is fixed on the inner side of the vertical clamping arm 31, the silicone pad 310 and the fin 311 are both arranged on the connecting plate 312, the fin 311 and the connecting plate 312 are integrally formed, and the silicone pad 310 is fixedly connected with the connecting plate 312.

In this embodiment, a protrusion 313 is formed on the back side of the connection plate 312, a notch 314 is formed on the inner side of the vertical clamping arm 31, and the protrusion 313 is clamped in the notch 314 and is tightly fitted with the notch 314. Specifically, the protrusion 313 and the notch 314 may be fixed by gluing or the like.

In the above structure, the engagement of the protrusion 313 and the notch 314 facilitates the separate production and processing of the connection plate 312 and the fin 311, and also facilitates the replacement of the connection plate 312, which not only facilitates the manufacture, but also facilitates the later maintenance.

In this embodiment, the fin 311 includes a slope portion 315 with a gradually increasing protruding height, the slope portion 315 is close to the end portion of the vertical clamping arm 31, and under the action of the slope portion 315, an inward protruding edge covering portion is formed at the end portion of the vertical clamping arm 31, and the edge covering portion can be used to limit and protect the mobile phone, so as to further prevent the mobile phone from falling off.

This embodiment still relates to a cell phone stand, combine fig. 6, fig. 19 and fig. 20 to show, cell phone stand is including casing 1, be equipped with fixed arm lock 2 and activity clamping jaw 3 on the casing 1, activity clamping jaw 3 is including vertical arm lock 31, the inboard of vertical arm lock 31 is equipped with silica gel pad 310 and a plurality of fin 311 that extend along vertical direction, silica gel pad 310 is close to the root of vertical arm lock 31, fin 311 extends to the tip of vertical arm lock 31, silica gel pad 310 with fin 311 all to the inboard protrusion of vertical arm lock 31, just fin 311's protrusion height is greater than silica gel pad 310's protrusion height, fixed arm lock 2's structure with vertical arm lock 31 is the same. That is, the inner side of the fixing clip arm 2 is also provided with a silicone pad and a fin.

In the cell phone stand of this embodiment, combine fig. 1 to 8 to show, it is including casing 1, be equipped with a fixed arm lock 2 and a movable clamping jaw 3 on the casing 1, just movable clamping jaw 3 can be relative 1 reciprocating slide of casing, be equipped with a screw rod 4 in the casing 1 and be used for ordering about 4 pivoted motors of screw rod 5, the cover is equipped with vice 6 of screw rod and the cooperation of the two transmission on the screw rod 4, movable clamping jaw 3 connect in vice 6 of screw rod, work as when motor 5 operates, borrow by screw rod 4 with the cooperation of vice 6 of screw rod drives movable clamping jaw 3 translation, so that movable clamping jaw 3 is close to or keeps away from fixed arm lock 2.

In the structure, a fixed clamping arm 2 is arranged on a shell 1, and a movable clamping jaw 3 capable of moving relative to the fixed clamping arm 2 is arranged, so that when a motor 5 in the shell 1 runs, a screw rod 4 and a screw rod pair 6 are mutually matched, the screw rod 4 drives the screw rod pair 6 to translate and then drives the movable clamping jaw 3 to move, so that the movable clamping jaw 3 is close to or far away from the fixed clamping arm 2, and the movable clamping jaw 3 and the fixed clamping arm 2 are matched to loosen and clamp a mobile phone. Compared with the prior art, the utility model discloses not only the centre gripping effect is better, need not the manual clamping jaw of breaking off with the fingers and thumb moreover, and is visible the utility model discloses an ease for use is stronger, user experience is better, simultaneously the utility model discloses only need a clamping jaw motion, can effectively reduce the wearing and tearing that the clamping jaw slides in-process and produce for the life of product is more permanent.

In the present embodiment, the screw pair 6 is embedded with a ball 60, the ball 60 is engaged with the thread groove 41 of the screw 4, and the ball 60 can roll along the thread groove 41.

In order to better realize the transmission fit, in the embodiment, two balls 60 are embedded in the screw pair 6, and the two balls 60 are respectively arranged at two sides of the screw 4.

In order to realize reliable transmission between the motor 5 and the screw rod 4, in this embodiment, a cross socket 40 is opened at an end of the screw rod 4, a cross insert block 50 is formed on an output shaft of the motor 5, and the cross insert block 50 is inserted into the cross socket 40 and is engaged with the cross socket.

Preferably, an inner support frame 7 is fixed in the housing 1, the motor 5 is fixedly connected with the inner support frame 7, and the screw pair 6 is rotatably connected with the inner support frame 7.

Regarding the specific composition of the movable clamping jaw 3, in this embodiment, the movable clamping jaw 3 includes at least one transverse arm 30 and a vertical clamping arm 31, the vertical clamping arm 31 is disposed opposite to the fixed clamping arm 2, the transverse arm 30 is slidably connected to the inner support frame 7, and the transverse arm 30 is connected to the screw pair 6.

As a preferable mode, the movable clamping jaw 3 includes two transverse supporting arms 30, the two transverse supporting arms 30 are parallel to each other, the two transverse supporting arms 30 are respectively disposed on two sides of the screw pair 6, two vertical plates 70 are formed on the inner supporting frame 7, the two transverse supporting arms 30 are clamped between the two vertical plates 70, and the transverse supporting arms 30 are in sliding fit with inner side walls of the vertical plates 70.

In the above structure, the movable clamping jaw 3 can slide back and forth more smoothly by the sliding fit of the transverse support arm 30 and the vertical plate 70.

In this embodiment, two stoppers 61 are formed on the side of the screw pair 6, a step 300 is formed on the inner side of the lateral arm 30, and the two stoppers 61 abut against the two steps 300.

Furthermore, two tension springs 71 are arranged on the back side of the inner support frame 7, the tension springs 71 correspond to the transverse support arms 30 one by one, a first end of each tension spring 71 is connected to the inner support frame 7, and a second end of each tension spring 71 is connected to the transverse support arm 30.

In the structure, the motor 5, the screw rod 4 and the screw rod pair 6 are used for driving the movable clamping jaw 3 to slide outwards, so that the two clamping jaws are opened to facilitate the mobile phone to be installed, after the mobile phone is placed, the motor 5 is controlled to move in the reverse direction, and meanwhile, the movable clamping jaw 3 is driven to move and clamp the mobile phone by means of the pulling force applied by the two tension springs 71. The driving force applied by the motor 5 is only used for driving the two clamping jaws to open, when the mobile phone needs to be clamped, the clamping function needs to be realized by the aid of the tension spring 71, and the structure has the advantages that: firstly, the two clamping jaws can be driven to open accurately, manual force application is not needed, and user experience is better; secondly, in the clamping process, the motor 5 can be prevented from applying pulling force to the movable clamping jaw 3, the clamping force on the mobile phone is prevented from being too large, and therefore the mobile phone is protected.

In order to better connect with the tension spring 71, in this embodiment, the transverse arm 30 is formed with a hook 301, the inner support frame 7 is formed with two transverse slots 72 parallel to each other, the two hooks 301 respectively pass through the two transverse slots 72, the hook 301 can translate along the transverse slot 72, and the second end of the tension spring 71 is connected to the hook 301.

Preferably, the fixed clip arm 2 is integrally formed with the housing 1.

Regarding other structures of cell phone stand, in this embodiment, casing 1 internal fixation has circuit board 10, the top of circuit board 10 is equipped with wireless charging module 11, wireless charging module 11 electric connection in circuit board 10, the top of casing 1 is fixed with epitheca 12, upper shell 12 has been seted up and has been kept away empty round mouth 120, keep away empty round mouth 120 with wireless charging module 11 aligns, the top of epitheca 12 is fixed with face-piece 13, face-piece 13 covers keep away empty round mouth 120.

On this basis, as shown in fig. 14 to 18, a supporting mechanism 8 is installed at the bottom of the housing 1, the supporting mechanism 8 includes a supporting ring 80, a chassis 81, a cover 82, a vertical rod 83 and a slider 84, the slider 84 is located in the cover 82, a spring 85 is clamped between one end of the slider 84 and the inner wall of the cover 82, the other end of the slider 84 penetrates through the side wall of the cover 82 and extends outward, an empty-avoiding opening 840 is formed in the slider 84, an upper insertion hole 820 is formed in the cover 82, a lower insertion hole 810 is formed in the chassis 81, the vertical rod 83 sequentially penetrates through the upper insertion hole 820, the empty-avoiding opening 840 and the lower insertion hole 810 from top to bottom, the opening length of the empty-avoiding opening 840 is greater than the thickness of the vertical rod 83 so that the slider 84 can slide back and forth relative to the vertical rod 83, a locking tongue 841 is formed on the inner wall of the empty-avoiding opening 840 close to the side of the spring, the lateral part of montant 83 is formed with vertical tooth portion 830, vertical tooth portion 830 is followed the length direction of montant 83 extends, vertical tooth portion 830 with the spring bolt 841 sets up relatively, borrows by the elasticity that spring 85 was applyed orders about the spring bolt 841 with vertical tooth portion 830 is block each other, the lower extreme of montant 83 is formed with colludes 831, the lid 82 with the chassis 81 branch is located the upper and lower both sides of support ring 80, the lid 82 with chassis 81 fixed connection, just the lid 82 with the chassis 81 all with support ring 80 normal running fit.

In the above structure, the hook 831 at the lower end of the vertical rod 83 can be hooked on the inner side of the automobile air outlet grid, and is matched with the support ring 80 to be fastened on the outer side of the automobile air outlet grid, so as to fix the support mechanism on the automobile air outlet grid, and then the insertion depth of the vertical rod 83 can be adjusted by matching the vertical tooth portion 830 with the lock tongue 841, and the insertion position of the vertical rod 83 is limited and fixed, so that the support mechanism is easy to install and disassemble, on this basis, the support ring 80 is clamped between the cover 82 and the chassis 81, and the support ring 80 can rotate relative to the cover 82 and the chassis 81, when the orientation of the support ring 80 needs to be adjusted, the support ring 80 can be directly screwed, thereby satisfying the application requirements of multiple scenes, and not only contributing to improving the overall performance of the mobile phone support, and user experience can be further improved.

Preferably, a plurality of lower protrusions 800 are formed on an upper end surface of the support ring 80, the lower protrusions 800 are in contact with a lower end surface of the cover 82, a plurality of upper protrusions 821 are formed on a lower end surface of the cover 82, and the upper protrusions 821 are in contact with an upper end surface of the support ring 80. After the support ring 80 rotates by a preset angle, the lower protrusions 800 and the upper protrusions 821 abut against each other, and when the support ring 80 is continuously screwed, the fastening force between the lower protrusions 800 and the upper protrusions 821 needs to be overcome.

In order to facilitate the sliding block 84 to pass through, in this embodiment, a sliding block hole 822 is formed in a side wall of the cover 82, and the sliding block 84 passes through the sliding block hole 822 and is in sliding fit with the sliding block hole 822.

In order to limit the slider 84, in this embodiment, two vertically disposed slider limiting plates 811 are formed on the chassis 81, the two slider limiting plates 811 are parallel to each other, and the slider 84 is located between the two slider limiting plates 811. The two slider limiting plates 811 help the slider 84 to slide smoothly according to a preset trajectory, thereby preventing the slider 84 from shifting.

In order to better support the outer side of the automobile air outlet grid, in this embodiment, two sides of the support ring 80 are respectively formed with a supporting foot 801.

Further, the arm brace 801 extends obliquely downward.

In this embodiment, the chassis 81 and the cover 82 are preferably assembled by inserting and fixing, specifically, a plurality of inserting posts 812 are formed on the chassis 81, a plurality of inserting holes 823 are formed on the inner side of the cover 82, the inserting posts 812 are aligned with the inserting holes 823 one by one, and the inserting posts 812 are inserted into the inserting holes 823 and are tightly matched with the inserting holes 823. The assembling mode is reliable in structure, does not need screws, and is simple and convenient in assembling process.

In order to ensure that the support ring 80 stably and reliably rotates, in this embodiment, an inner step opening 802 is formed at the bottom opening of the support ring 80, and the chassis 81 is embedded in the inner step opening 802 and is in rotating fit with the inner step opening 802.

Further, a universal shaft seat 105 is fixed at the bottom of the housing 1, a locking nut 106 is sleeved on the outer side of the universal shaft seat 105 and is screwed and fixed with the locking nut 106, a universal ball 832 is formed at the upper end of the vertical rod 83, and the universal ball 832 is clamped in the universal shaft seat 105.

In order to support the mobile phone, the present embodiment further provides a support mechanism on the housing 1, and reference may be made to the following second embodiment and third embodiment.

Example two

Referring to fig. 9 and 10, the present embodiment includes a bracket 90, where the bracket 90 includes a supporting portion 901 and two parallel sliding rods 900, a wavy groove 902 is formed on a side of the sliding rod 900, two sliding ways 100 are formed at a bottom of the housing 1, the two sliding rods 900 respectively pass through the two sliding ways 100, the sliding rod 900 is in sliding fit with the sliding ways 100, two slots 101 are formed in the housing 1, a compression spring 102 is disposed in the slot 101, a top bead 103 is disposed at an end of the compression spring 102, the top bead 103 is aligned with the wavy groove 902, and the top bead 103 is abutted and matched with the wavy groove 902 by an elastic force applied by the compression spring 102.

In the above structure, the bracket 90 can support the mobile phone, and meanwhile, under the sliding fit action of the sliding rod 900 and the sliding track 100, the pulling-out position of the bracket 90 can be adjusted, so as to adapt to mobile phones of various sizes, and on the basis, the bracket 90 can be positioned at a designated position through the cooperation action of the compression spring 102, the top bead 103 and the wavy groove 902, so that the size adjusting function is better realized.

EXAMPLE III

In practical application, the mobile phone support generally depends on two symmetrically arranged clamping arms to clamp and fix the mobile phone, in order to overcome the gravity of the mobile phone, a supporting mechanism is usually arranged on the basis of two clamping arms, the existing supporting mechanism generally only comprises a supporting claw, the support claw can be fixed on the shell of the mobile phone support to play a role of supporting the mobile phone, and is suitable for being applied to occasions which are likely to vibrate, such as vehicles, and the like, and some mobile phone supports are not provided with support claw structures, and the mobile phone support without the support claw can meet the requirements of small-size products, and is suitable for being applied to occasions, such as desktops or wireless charging of mobile phones, and the like, however, the existing mobile phone support only has two types of support claws and no support claw, when the user is applied to different use occasions, the mobile phone support needs to be bought independently, so that the use cost is increased, the flexibility is poor, and the requirements of users and the market are difficult to meet.

To this end, as shown in fig. 11 and fig. 13, the present embodiment provides a detachable supporting mechanism for a mobile phone support, where the mobile phone support includes a housing 1, the supporting mechanism 9 includes a supporting claw 91, the supporting claw 91 includes a longitudinal supporting arm 910 and a vertical supporting arm 911, a snap ring 912 is formed at an end of the longitudinal supporting arm 910, a step ring 104 is formed at the bottom of the housing 1, the snap ring 912 is sleeved on the step ring 104, a universal shaft seat 105 is inserted in the step ring 104, the universal shaft seat 105 is fixedly connected to the housing 1, a lock nut 106 is screwed on the universal shaft seat 105, and the snap ring 912 is clamped between the lock nut 106 and the housing 1.

The above-described structure has the advantage that a fixed holding claw 91 is mounted on the housing 1, with which holding claw 91 the mobile phone can also be held. In addition, based on above-mentioned structure is visible, holds in the palm claw 91 and is detachable construction, and the user can carry out nimble dismouting to holding in the palm claw 91 according to specific demand, not only is convenient for change, maintain, can also satisfy the user demand that has the support claw or do not have the support claw.

In order to better match with the housing 1, in this embodiment, an arc-shaped transition piece 913 is connected between the snap ring 912 and the longitudinal support arm 910, the arc-shaped transition piece 913 is wrapped at the edge of the housing 1, and the snap ring 912, the arc-shaped transition piece 913, the longitudinal support arm 910 and the vertical support arm 911 are integrally formed.

In order to position the supporting claw 91 and prevent the supporting claw 91 from rotating in the using process, in this embodiment, two positioning insertion posts 914 are formed on the snap ring 912, two positioning insertion holes 107 are formed on the bottom case 1, the positioning insertion posts 914 are aligned with the positioning insertion holes 107 one by one, and the positioning insertion posts 914 are inserted into the positioning insertion holes 107 and are tightly matched with the positioning insertion holes 107.

The embodiment also relates to a mobile phone support, the mobile phone support comprises a housing 1, the housing 1 is provided with a fixed clamping arm 2, a movable clamping jaw 3 and a supporting mechanism 9, the supporting mechanism 9 comprises a supporting claw 91, the supporting claw 91 comprises a longitudinal supporting arm 910 and a vertical supporting arm 911, a clamping ring 912 is formed at the end of the longitudinal supporting arm 910, a step ring 104 is formed at the bottom of the housing 1, the clamping ring 912 is sleeved on the step ring 104, a universal shaft seat 105 is inserted in the step ring 104, the universal shaft seat 105 is fixedly connected with the housing 1, a locking nut 106 is screwed on the universal shaft seat 105, and the clamping ring 912 is clamped between the locking nut 106 and the housing 1.

The second and third embodiments are only examples of two applications of the supporting mechanism, but are not limited to this, i.e. other types of supporting mechanisms may also be adopted, and these alternatives are all within the scope of the present invention.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.

Claims (7)

1. The utility model provides a clamping jaw for cell phone stand, its characterized in that, including vertical arm lock, the inboard of vertical arm lock is equipped with silica gel pad and a plurality of fin that extend along vertical direction, the silica gel pad is close to the root of vertical arm lock, the fin extends to the tip of vertical arm lock, the silica gel pad with the fin all to the inboard protrusion of vertical arm lock, just the protrusion height of fin is greater than the protrusion height of silica gel pad.

2. The clamp jaw for a handset support of claim 1, wherein the silicone pad includes a smooth surface.

3. The clamp jaw for a handset support of claim 1, wherein the plurality of fins are parallel to one another.

4. The clamping jaw for the mobile phone support according to claim 1, wherein a connecting plate is fixed to the inner side of the vertical clamping arm, the silicone pad and the fin are both arranged on the connecting plate, the fin and the connecting plate are integrally formed, and the silicone pad is fixedly connected with the connecting plate.

5. The clamping jaw for mobile phone supports as claimed in claim 4, wherein a protrusion is formed on the back side of the connecting plate, a notch is formed on the inner side of the vertical clamping arm, and the protrusion is clamped in the notch and is tightly matched with the notch.

6. A jaw for a handset support according to claim 1 wherein said fin includes a ramp portion of progressively increasing height projecting from said fin, said ramp portion being adjacent the end of said vertical clamping arm.

7. The utility model provides a mobile phone support, its characterized in that, mobile phone support is including the casing, be equipped with fixed arm lock and activity clamping jaw on the casing, the activity clamping jaw is including vertical arm lock, the inboard of vertical arm lock is equipped with silica gel pad and a plurality of fin that extend along vertical direction, silica gel pad is close to the root of vertical arm lock, the fin extends to the tip of vertical arm lock, silica gel pad with the fin all to the inboard protrusion of vertical arm lock, just the protrusion height of fin is greater than the protrusion height of silica gel pad.

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