CN208143282U - A kind of handset bracket - Google Patents

Abstract

The utility model patent discloses a kind of general mobile phone bracket, including the first clamp structure and the second clamp structure, it further include the first adjustment component, the first clamp structure, close to or far from the second clamp structure, realizes the coarse adjustment of mobile phone clamping under the action of the first adjustment component；It is characterized in that：It further include the sliding slot of the second adjustment component that the first adjustment component tail portion is set, the sliding block of the first clamp structure back side, the second clamp structure back side, sliding block can move back and forth with respect to sliding slot, and there are two types of adjustment modes for this handset bracket：The coarse adjustment of the first adjustment component and the quick open-close type fine tuning of second adjustment component, its is versatile, on the basis of only needing a coarse adjustment, Quick-clamped is realized by quick open-close type fine tuning structure or unclamps mobile phone, the folding of one key, quick fetching keeps the structure of the first clamp structure and the second clamp structure simpler by the structure of sliding block sliding slot, and the service life is longer.

Description

A kind of handset bracket

Technical field

The utility model patent is related to mobile phone clamping, technique for fixing field, especially a kind of to pass through coarse adjustment and quickly folding Decline tune, to be suitable for the handset bracket of various width specifications.

Background technique

Smart phone has been also equipped with most of function of PDA other than the call function for having mobile phone, especially personal letter Breath management and the browser based on wireless data communication, GPS and e-mail function.Smart phone provides enough for user Screen size and bandwidth, it is not only handy to carry about, but for software operation and content service provide wide stage, Hen Duozeng Value business can be with regard to this expansion, such as：Stock, news, weather, traffic, commodity, application program downloading, the downloading of music picture etc.. In conjunction with the support of 3G-4G communication network, the development trend of smart phone, being bound to will be powerful as one, and collection is conversed, is short Letter, network insertion, video display entertain the comprehensive personal hand-held terminal device being integrated.And with the development of society, intelligent hand The ownership of machine is skyrocketed through, and online transaction, shopping, traffic also may be implemented in addition to being telephonic communication tool in smart phone The functions such as navigation, positioning, video display, audio, have the characteristics that diversification, multifunction, meet user in the need of different occasions It asks, when especially with the vehicles, it is sometimes desirable to use the navigation feature on mobile phone, it is necessary to which mobile phone screen is located to drive The position that the person of sailing is random, conveniently sees, such as on automobile, two-wheeled vehicle using motor.Handset bracket therefore use and give birth to, principle be by Mobile phone is clamped by two opposite clamp structures, is then fixed on handlebar or automobile bodies forward position by mounting base, Mounting base is generally sucked type, adhesive type, clipping or hood type, but since the style of mobile phone is different, between different brands, All different with the type size between brand different model, according to screen size, the length and width specification of mobile phone is different, leads to mobile phone Versatility between bracket is poor, if the mobile phone specification that mobile phone of the replacement compared with before is excessive or too small, just has to replace Handset bracket causes the bracket of different mobile phone models to need to customize, higher cost, and when use handset bracket, picks and places back and forth Mobile phone is more troublesome, needs to screw adjustment screw back and forth repeatedly, unclamps handset bracket or clamps mobile phone, picks and places back and forth, clamping It is more troublesome, it is relatively time-consuming hard, it is not easy to operate, and adjustment screw is used for a long time, and is prone to wear destruction, needs replacing whole A handset bracket.

Based on this, a versatile handset bracket between different mobile phone models how is designed, and how The Quick-clamped and release for realizing mobile phone convenient for quickly picking and placing mobile phone on handset bracket are that those skilled in the art need at present Technical problems to be solved.

Utility model content

For the problems of the prior art, the purpose of this utility model is to provide for a kind of handset bracket, can be applicable in It is versatile in the mobile phone of different physical size requirements, and Quick-clamped can be realized by quick open-close type fine tuning structure Or mobile phone is unclamped, it quickly placed from handset bracket convenient for user, remove mobile phone, a key opens and closes, quick fetching, economical resistance to With.

In order to achieve the above object, the technical solution of the utility model is：

A kind of general mobile phone bracket, including the first clamp structure and the second clamp structure, further include being threaded through the first clamping The first adjustment component between structure and the second clamp structure, the first clamp structure it is close under the action of the first adjustment component or Far from the second clamp structure, the adjustment of mobile phone clamping is realized；It is characterized in that：The handset bracket further includes being arranged in the first adjustment The second adjustment component of component tail portion, the first adjustment component and second adjustment component are located at the two sides of the second clamp structure, this hand Machine support further includes the sliding block that the first clamp structure back side is arranged in, and the sliding slot of the second clamp structure back side is arranged in, and sliding block is set It sets in sliding slot, and can move back and forth with respect to sliding slot.

Further, the first adjustment component includes adjustment screw and the adjustment nut that adjustment screw end is arranged in, Tensioning spring is arranged in adjustment screw, the second adjustment component includes eccentric wheel body and the drive that adjustment screw tail portion is arranged in Move the adjustment handle of bias wheel body rotation.

Further, the first adjustment screw through hole and spring base, the second clamping knot are provided on first clamp structure Second adjustment screw through hole is provided on structure, the adjustment screw passes through the first adjustment screw through hole and second adjustment screw rod is logical Hole, and tensioning spring one end is placed in spring base, the other end pushes against the second clamp structure inner side edge.

Further, the upper surface of first clamp structure is provided with mobile phone placement platform and mounting hole, and lower end surface is set It is equipped with charging interface, and the upper surface of the first clamp structure is provided with the first fixture block far from the side of the second clamp structure, it is described First fixture block is arranged obliquely to the direction of mobile phone placement platform, and the top of the first fixture block is provided with to mobile phone placement platform side To the fixture block protrusion of extension, the first fixture block is provided with clamping buffer layer towards between the side and protrusion of mobile phone placement platform.

Further, the upper surface of second clamp structure is provided with the second folder far from the side of the first clamp structure Block, second fixture block is arranged obliquely to the direction of mobile phone placement platform, and the top of the second fixture block is provided with to mobile phone and puts The fixture block protrusion that horizontalization platform direction extends, the second fixture block are slow towards clamping is provided between the side and protrusion of mobile phone placement platform Rush layer.

Further, it is provided with eccentric wheel base on the outside of second clamp structure, the eccentric wheel base and second adjustment screw rod Through-hole is corresponding, and the external profile of eccentric wheel is placed in the eccentric wheel base.

Further, eccentric wheel pad is provided between the eccentric wheel body and eccentric wheel base.

Further, the eccentric wheel pad is high molecular abrasion-proof material.

Further, it is provided with the camshaft that eccentric wheel body can rotate around it at the eccentric center of the eccentric wheel body, Camshaft has been arranged radially camshaft threaded hole, and the tail portion of the adjustment screw is connected and fixed to this by helicitic texture In camshaft threaded hole.

Further, first clamp structure lower end surface is provided with mounting base, which is in key-way shape.

Compared with prior art, a kind of structure of handset bracket provided by the utility model is unusual, and there are two types of tools Adjustment modes, the coarse adjustment of the first adjustment component and the quick open-close type of second adjustment component clamp, and are clamping a kind of mobile phone for the first time When, it first passes through the first adjustment component and carries out coarse adjustment, make the gripping width of the distance between the first fixture block and the second fixture block with mobile phone It is substantially adapted, for example slightly larger than clamped 1-1.5 millimeters of mobile phone width, is then quickly opened by second adjustment component again Box-like fine tuning, that is to say quick locked and fixed, when release, is only quickly unclamped by the adjustment handle of second adjustment component and is Can, moreover, for when being clamped with Mobile phone, it is only necessary to carry out the coarse adjustment of first time, then can pass through second adjustment group Part is finely adjusted, and by adjusting handle fast lock unique skill's machine, when removing mobile phone, adjusts handle, that is, quick releasable by unclamping And mobile phone is taken down, it is subsequent only by adjusting handle Rapid Implementation, to no longer need to carry out coarse adjustment when taking again or clamping mobile phone, When only replacing the different mobile phone of other physical size requirements, then carry out coarse adjustment.This handset bracket it is versatile, and And on the basis of only needing a coarse adjustment, Quick-clamped can be realized by quick open-close type fine tuning structure or unclamps mobile phone, just It quickly placed from handset bracket in user, remove mobile phone, key folding, quick fetching, economy and durability, due to coarse adjustment Structure, be applicable to the mobile phone of different dimensions, mounting base is also possible to diversified forms, be convenient for and a variety of fixed structures connect It connects.It is led moreover, the mutual motion mode between the first clamp structure and the second clamp structure in the utility model no longer passes through The guidance mode of bar, but pass through the structure of sliding block sliding slot, keep the structure of a clamp structure and the second clamp structure simpler, The service life is longer, with the slide block structure with the first clamp structure integral type and the sliding groove structure with the second clamp structure integral type Structure is slipped instead of guide rod, performance is more superior, and the first clamp structure and the relative movement of the second clamp structure are more convenient, is easy to Operation, structure is simple, reliable performance.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Attached drawing 1 is the overall structure diagram of the general mobile phone bracket；

Attached drawing 2 is overlooking structure diagram in attached drawing 1；

Attached drawing 3 be in attached drawing 2 A-A to schematic cross-sectional view；

Attached drawing 4 is B-B direction schematic cross-sectional view in attached drawing 2；

Attached drawing 5 is 1 structure schematic diagram of the first clamp structure in attached drawing 1；

Attached drawing 6 is the schematic perspective view of the second clamp structure 2 in attached drawing 1；

Attached drawing 7 is another viewing angle constructions schematic diagram in attached drawing 6；

Attached drawing 8 is that the mounting structure of the first adjustment component the second clamp structure opposite with second adjustment component in attached drawing 1 shows It is intended to；

Attached drawing 9 is the attachment structure schematic diagram of the first adjustment component and second adjustment component in attached drawing 8；

Attached drawing 10 is plan structure cross-sectional view in attached drawing 1；

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe.Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in the picture, a kind of handset bracket, including the first clamp structure 1 and the second clamp structure 2, further include being threaded through The first adjustment component 3 between first clamp structure 1 and the second clamp structure 2, the first clamp structure 1 is in the first adjustment component 3 Under the action of close to or far from the second clamp structure 2, realize the coarse adjustment of mobile phone clamping；For the hand of different physical size requirements Machine is realized and is carried out between the first clamp structure 1 and the second clamp structure 2 before finally clamping to the mobile phone of different gripping widths Apart from coarse adjustment, the distance between the first clamp structure 1 and the second clamp structure 2 are adjusted by the first adjustment component 3, make itself and hand The gripping width of machine is adapted, and preferably makes its 1-1.5 millimeters of width that are slightly larger than clamped mobile phone, 1 lower end of the first clamp structure Face is provided with mounting base 15, and as shown in Fig. 5, which is similar to quincunx or cross key-way shape, preferably keyway Shape is also designed to "-" type or other geometries certainly, as long as it can play the role of installation connection.

It further include the first clamp structure 1 of guidance and the relative movement of the second clamp structure 2 as a kind of scheme of the present embodiment Guide frame, which includes：The sliding block 14 of first clamp structure, 1 back side is set, 2 back side of the second clamp structure is set Sliding slot 22.Sliding block 14 is arranged in sliding slot 22, and can move back and forth with respect to sliding slot 22, between the first fixture block 11 and the second fixture block 21 Mutual motion mode no longer by the guidance mode of guide rod, but by sliding block 14, sliding slot 22 structure, make the first clamping knot The structure of structure 1 and the second clamp structure 2 is simpler, and the service life is longer, with the sliding block 14 with 1 integral type of the first clamp structure Structure and guide rod is replaced to slip structure with 22 structure of sliding slot of 2 integral type of the second clamp structure, performance is more superior, the first clamping Structure 1 and the second clamp structure 2 relatively move more convenient, and easily operated, structure is simple, reliable performance.

The handset bracket further includes the second adjustment component 4 that 3 tail portion of the first adjustment component is arranged in, the first adjustment component 3 It is located at the two sides of the second clamp structure 2 with second adjustment component 4, the first adjustment component 3 includes adjustment screw 31 and setting Adjustment nut 32 in 31 end of adjustment screw is arranged with tensioning spring 34 in adjustment screw 31, as it is shown in the figures, adjustment spiral shell Cap 32 is connected to the end of adjustment screw 31 by helicitic texture, and the nut head for adjusting nut 32 pushes against the first clamp structure 1 left side, another tail end of adjustment screw 31 is by that is to say and be connected through a screw thread and be fixed on the second clamp structure 2 In the threaded hole of camshaft 44, adjustment nut 32 is turned, it is rotated relative to adjustment screw 31, is with the second clamp structure 2 With reference to, nut 32 is adjusted under the action of screw drive, it is real with the first clamp structure 1 far from or close to the second clamp structure 2 The coarse adjustment of existing mobile phone clamping, realize to the mobile phone of different in width carry out the first fixture block 11 before finally clamping and the second fixture block 21 it Between distance coarse adjustment, the first adjustment component 3 herein is only used for coarse adjustment, that is to say the gripping width according to mobile phone, makes the first folder The distance between second fixture block 21 on the first fixture block 11 and the second clamp structure 2 in structure 1 is held to be adapted with mobile phone width. Then quickly locked decline tune or Quick release fine tuning are carried out by second adjustment component 4 again.

About second adjustment component 4, which further includes the second adjustment group that 3 tail portion of the first adjustment component is arranged in Part 4, the second adjustment component 4 include that the eccentric wheel body 42 of 31 tail portion of adjustment screw is arranged in and the bias wheel body 42 is driven to rotate Adjustment handle 41, the first adjustment component 3 and second adjustment component 4 are located at the two sides of the second clamp structure 2.Such as institute in attached drawing Showing, the first adjustment component 3 is located at the left side of the second clamp structure 2, and second adjustment component 4 is located at the right side of the second clamp structure 2, And second adjustment component 4 is connected to the tail end of the adjustment screw 31 in the first adjustment component 3, is arranged on the outside of the second clamp structure 2 There is eccentric wheel base 24, the eccentric wheel base 24 is corresponding with second adjustment screw through hole 23, and bias 42 outer profile of wheel body is placed in this In eccentric wheel base 24, and eccentric wheel pad 43 is provided between eccentric wheel body 42 and eccentric wheel base 24, eccentric wheel pad 43 is macromolecule Wear-resistant material, it is described bias wheel body 42 eccentric center at be provided with the camshaft 44 that eccentric wheel body 42 can rotate around it, partially Heart wheel shaft 44 has been arranged radially camshaft threaded hole, and the tail portion of the adjustment screw 31 is connected and fixed to by helicitic texture In the camshaft threaded hole.Eccentric wheel pad 43 is located between eccentric wheel body 42 and the second clamp structure 2, prevents phase between the two Mutual pivoting friction is serious, destroys eccentric wheel body 42 or the second clamp structure 2.Eccentric wheel body 42 is stirred by adjusting handle 41 to revolve Turn, so adjust camshaft 44 center at a distance from the second clamp structure 2, so that the second clamp structure 2 be made to overcome tensioning The elastic force of spring 34, it is close to the first clamp structure 1, it further reduces between the first clamp structure 1 and the second clamp structure 2 Distance realizes Quick clamping fine tuning, that is to say that a key-lock is extremely finely tuned.First clamp structure 1 and the second clamp structure 2 are first After adjusting 3 coarse adjustment of component, by the adjustment handle 41 on second adjustment component 4, clamp or release mobile phone can be realized, it is convenient fast Victory, being not required to turn adjustment nut 32 again may tighten or loosen the mobile phone of identical dimensions.As it is shown in the figures, below to the left Adjustment handle 41 is pulled, the eccentric wheel pad 43 on the second clamp structure 2 is pushed against at the longer diameter of eccentric wheel body 42, in eccentric wheel body Under 42 active force, eccentric wheel pad 43 moves to the left against the second clamp structure 2, realizes and clamps, otherwise is to unclamp, herein It repeats no more.

As shown in the figure, it is provided with the first adjustment screw through hole 16 and spring base 18 on first clamp structure 1, second It is provided with second adjustment screw through hole 23 on clamp structure 2, the adjustment screw 31 passes through the first adjustment screw through hole 16 and the Two adjustment screw through-holes 23, and 34 one end of tensioning spring is placed in spring base 18, the other end pushes against 2 inside of the second clamp structure Side.The adjustment nut 32 and second adjustment component 4 at 31 both ends of adjustment screw are located at the first clamp structure 1 and the second clamp structure 2 Two sides, in figure, adjustment nut 32 is located at the left side of the first clamp structure 1, and second adjustment component 4 is located at the second clamp structure 2 right side, left side screw adjustment nut 32 and carry out coarse adjustment, and right side adjustment second adjustment component 4 carries out quick open-close type fine tuning.Into And realize that coarse adjustment combines the adjustment mode of quick open-close type fine tuning, to be suitable for the mobile phone specification of different in width clamping dimension, together When can realize and Quick-clamped or remove for same mobile phone.In order to guarantee between the first clamp structure 1 and the second clamp structure 2 Relative motion stability and rebound effect, spy are configured with 14 structure of sliding slot 22 and sliding block, and under the effect of tensioning spring 34, pine After opening the first adjustment component 3 or second adjustment component 4, the second clamp structure 2 can be separate with respect to the first clamp structure 1, Er Qieshi It is automatic separate, convenient for the mobile phone for release of taking.In order to realize the tensile force of tensioning spring 34, the first adjustment screw through hole 16 In be provided with limit 34 position of tensioning spring spring base 18, the distance between spring base 18 and the second clamp structure 2 as bullet Spring distance of stretch out and draw back that is to say the effective deformation distance of tensioning spring 34.

As shown in the figure, the upper surface of the first clamp structure 1 is provided with mobile phone placement platform 12 and mounting hole 13, lower end surface It is provided with mounting base 15, charging interface, which installs shape in key-way shape or other geometry, in above embodiments Carried out it is detailed enumerate, details are not described herein, can be by the mobile phone using mounting screw by mounting base 15 and mounting hole 13 Bracket is fixed on the fixed structures such as anchor ear, can also load mobile power source, such as charger baby etc. on first clamp structure 1, It can be realized by charging interface and charging process carried out to the mobile phone placed on handset bracket, it is very convenient.

About the clamping of mobile phone, the upper surface of the first clamp structure 1 is provided with first far from the side of the second clamp structure 2 Fixture block 11, first fixture block 11 are arranged obliquely to the direction of mobile phone placement platform 12, and the top setting of the first fixture block 11 The fixture block protrusion 17 that oriented 12 direction of mobile phone placement platform extends, the first fixture block 11 towards mobile phone placement platform 12 side with it is convex It rises and is provided with clamping buffer layer 5 between 17.Second fixture block 21 is arranged obliquely to the direction of mobile phone placement platform 12, and the second folder The top of block 21 is provided with the fixture block protrusion 17 extended to 12 direction of mobile phone placement platform, and the second fixture block 21 is placed flat towards mobile phone Clamping buffer layer 5 is provided between the side and protrusion 17 of platform 12.When specifically used, mobile phone is placed on mobile phone placement platform 12 On, keep the first fixture block 11 close to the second fixture block 21 by the first adjustment component 3 and be adapted with the gripping width of mobile phone, then Quick open-close type fine tuning is carried out by second adjustment component 4, only can fast implement the second fixture block by pulling adjustment handle 41 21 to the first fixture block 11 further towards, and then realize clamp mobile phone, it is on the contrary, it is only necessary to pull adjustment handle 41 can unclamp first Fixture block 11 and the second fixture block 21, make it away from, and then unclamp mobile phone, when the mobile phone for needing to clamp other larger or smaller specifications When, it is finely tuned again by the quick open-close type of second adjustment component 4 after first passing through 3 coarse adjustment of the first adjustment component, it is no longer superfluous herein It states.Protrusion 17 combines the first fixture block 11 or the second fixture block 21, is bent it to the direction of mobile phone, convenient for clamping the side of mobile phone, It prevents from slipping, and the setting of buffer layer 5 can play the buffer function for preventing scratching mobile phone.

The foregoing description of the disclosed embodiments makes those skilled in the art can be realized or use the utility model. Various modifications to these embodiments will be apparent for a person skilled in the art, general original as defined herein Reason can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, this is practical new Type is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase Consistent widest scope.

Claims (10)

1. a kind of handset bracket, including the first clamp structure (1) and the second clamp structure (2), further include being threaded through the first clamping The first adjustment component (3) between structure (1) and the second clamp structure (2), the first clamp structure (1) is in the first adjustment component (3) close to or far from the second clamp structure (2) under the action of, the adjustment of mobile phone clamping is realized；It is characterized in that：The handset bracket It further include second adjustment component (4) of the setting in the first adjustment component (3) tail portion, the first adjustment component (3) and second adjustment group Part (4) is located at the two sides of the second clamp structure (2)；This handset bracket further includes cunning of the setting in the first clamp structure (1) back side The sliding slot (22) in the second clamp structure (2) back side is arranged in block (14), and sliding block (14) setting is interior in sliding slot (22), and can be opposite Sliding slot (22) moves back and forth.

2. a kind of handset bracket according to claim 1, it is characterised in that：The first adjustment component (3) includes adjustment In the adjustment nut (32) of adjustment screw (31) end, adjustment screw is arranged with tensioning spring on (31) for screw rod (31) and setting (34), the second adjustment component (4) includes setting in the eccentric wheel body (42) of adjustment screw (31) tail portion and drives the bias The adjustment handle (41) of wheel body (42) rotation.

3. a kind of handset bracket according to claim 2, it is characterised in that：It is provided on first clamp structure (1) The first adjustment screw through hole (16) and spring base (18) are provided with second adjustment screw through hole (23) on the second clamp structure (2), The adjustment screw (31) passes through the first adjustment screw through hole (16) and second adjustment screw through hole (23), and tensioning spring (34) One end is placed in spring base (18), and the other end pushes against the second clamp structure (2) inner side edge.

4. a kind of handset bracket according to claim 1 or 2, it is characterised in that：The upper end of first clamp structure (1) Face is provided with mobile phone placement platform (12) and mounting hole (13), and lower end surface is provided with charging interface, and the first clamp structure (1) Upper surface is provided with the first fixture block (11) far from the side of the second clamp structure (2), and first fixture block (11) is placed to mobile phone The direction of platform (12) is arranged obliquely, and the top of the first fixture block (11) is provided with to mobile phone placement platform (12) direction and extends Fixture block it is raised (17), the first fixture block (11) is provided with clamping towards between the side and protrusion (17) of mobile phone placement platform (12) Buffer layer (5).

5. a kind of handset bracket according to claim 1 or 2, it is characterised in that：The upper end of second clamp structure (2) Face is provided with the second fixture block (21) far from the side of the first clamp structure (1), and second fixture block (21) is to mobile phone placement platform (12) direction is arranged obliquely, and the top of the second fixture block (21) is provided with the folder extended to mobile phone placement platform (12) direction Block protrusion (17), the second fixture block (21) are buffered towards clamping is provided between the side and protrusion (17) of mobile phone placement platform (12) Layer (5).

6. a kind of handset bracket according to claim 2, it is characterised in that：Setting on the outside of second clamp structure (2) There are eccentric wheel base (24), the eccentric wheel base (24) is corresponding with second adjustment screw through hole (23), described bias wheel body (42) foreign steamer Exterior feature is placed in the eccentric wheel base (24).

7. a kind of handset bracket according to claim 6, it is characterised in that：The bias wheel body (42) and eccentric wheel base (24) eccentric wheel pad (43) are provided between.

8. a kind of handset bracket according to claim 7, it is characterised in that：The eccentric wheel pad (43) is high molecular abrasion-proof Material.

9. a kind of handset bracket according to claim 2, it is characterised in that：The eccentric part setting of the bias wheel body (42) The camshaft (44) for having eccentric wheel body (42) that can rotate around it, camshaft (44) have been arranged radially camshaft threaded hole, The tail portion of the adjustment screw (31) is connected and fixed in the camshaft threaded hole by helicitic texture.

10. a kind of handset bracket according to claim 1, it is characterised in that：First clamp structure (1) lower end surface is set Mounting base (15) are equipped with, which is in key-way shape.