Utility model content
The technical problems to be solved in the utility model is do not possess the defects such as versatility for electronic cigarette charging device in prior art, provides a kind of applicability extensively and charge to facilitate stable electronic cigarette charging device.
The utility model solves the technical scheme that its technical problem adopts: a kind of electronic cigarette charging device is provided, for the battery bar charging to electronic cigarette, described electronic cigarette charging device comprises the charging assembly being electrically connected to for the electrode connecting parts with on described electronic cigarette, described charging assembly comprises mount pad, also comprise the clamping structure arranging along on the insertion path of described electronic cigarette, described clamping structure is connected to one end of described mount pad and one-body molded with described mount pad, described clamping structure is provided with for clamp the clamping limb of described electronic cigarette when described electronic cigarette inserts.
In electronic cigarette charging device described in the utility model, described clamping structure is for the end face lateral margin along described mount pad is to the lobe formula of the opening structure extending to form away from described mount pad direction;
Describedly open the described clamping limb that lobe formula structure comprises that at least two rightabouts towards the direction of insertion of electronic cigarette extend, described clamping limb extends to form a slot that can be used for plugging described electronic cigarette along described end face lateral margin.
In electronic cigarette charging device described in the utility model, described in each, one end of clamping limb is fixedly connected with described mount pad, described in each, the other end of clamping limb is free end, described in each, the free end common combination of clamping limb forms an openend, described in during charging, electronic cigarette comes downwards to described end face through described openend, make the electrode connecting parts on described electronic cigarette be electrically connected to described charging assembly, and by the sidewall of electronic cigarette described in the tensioner cooperation clamping fastening of described openend.
In electronic cigarette charging device described in the utility model, between described clamping limb, with respect to described slot, in axisymmetric mode, arrange, the surface that described in each, clamping limb and described electronic cigarette support mutually is also fixed with pad, and described pad is bonded on described clamping limb by tack coat.
In electronic cigarette charging device described in the utility model, described openend is with respect to the madial wall butt of described slot Zhou center radial contraction and described openend to the circumferential lateral wall that is inserted in the described electronic cigarette in described slot, and the angle shape described in each between clamping limb and described end face is in an acute angle.
In electronic cigarette charging device described in the utility model, described in each, clamping limb has support division at described openend, described in each, support division is along the radial contraction of described slot butt to the circumferential lateral wall that is inserted in described electronic cigarette in described slot, and described in each, support division has the contact-making surface suitable with the circumferential lateral wall of described electronic cigarette.
In electronic cigarette charging device described in the utility model, described charging assembly comprises and is fixed on described mount pad and the first charging electrode being electrically connected to the charging circuit of described charging assembly and at least one second charging electrode;
Described the first charging electrode and plug-in mounting be to the first electrode connecting parts elasticity butt of the electronic cigarette in described slot, and described the second charging electrode and plug-in mounting be the second electrode connecting parts elasticity butt of the electronic cigarette in described slot extremely.
In electronic cigarette charging device described in the utility model, on the described end face of described mount pad, offer through hole, the inside of described mount pad also offers the container cavity being connected with described through hole, and described the first charging electrode can install elastic telescopic in described container cavity and stretch out at least in part described through hole and be electrically connected to described the first electrode connecting parts.
In electronic cigarette charging device described in the utility model, described mount pad is connected with respectively described the second charging electrode on the two side adjacent with described end face, described the second charging electrode is elastic piece structure, described in each, one end of the second charging electrode is fixedly connected on respectively on corresponding described sidewall, and the space between two described clamping limbs that described in each, the other end of the second charging electrode arranges through space is electrically connected to described the second electrode connecting parts.
In electronic cigarette charging device described in the utility model, described electronic cigarette charging device is electronic cigarette case.
Implement electronic cigarette charging device of the present utility model, there is following beneficial effect: by adopting integrated mode clamping structure to be fixedly connected on to one end of mount pad, facilitate user can realize the stability clamping in to electronic cigarette charging, can guarantee to insert in the process of clamping structure at electronic cigarette, electronic cigarette and the charging electrode phenomenons such as contraposition is inaccurate each other in the time of can not inserting, can not only facilitate the assembling of electronic cigarette charging device, and can reduction in the numbers of seconds, simplified assembling process, enhance productivity greatly, be easy to automated production, in addition, because clamping structure is for the end face lateral margin along mount pad is to the lobe formula of the opening structure extending to form away from mount pad direction, electronic cigarette coordinates the sidewall of clamping fastening electronic cigarette by the described tensioner of opening lobe formula structural openings end, therefore can clamp the electronic cigarette of the different sizes of fastening, described electronic cigarette charging device can be charged for the electronic cigarette of different-diameter size.
Embodiment
At present, electronic cigarette charging device adopts silica gel clamping element to be fixed electronic cigarette mostly, silica gel clamping element and charging assembly are independently to assemble, and each silica gel clamping element can only clamp the electronic cigarette suitable with its size, that is to say that existing electronic cigarette charging device can only carry out constant charge for a kind of electronic cigarette of specification.In prior art, the assembling of electronic cigarette charging device is complicated, and the feature that does not possess versatility, adopt integrated mode clamping structure to be fixedly connected on to one end of mount pad, integrated formed structure only needs the mould just can moulding, and use a mould molding clamping structure and mount pad make clamping structure can center contraposition on mount pad, when assembling, can save install electronic cigarette is inserted after not contraposition after contraposition inaccurate or the generation of the problem such as loosening is installed, and integrated formed structure also facilitates user can realize the stability clamping in to electronic cigarette charging, can guarantee to insert in the process of clamping structure at electronic cigarette, electronic cigarette and the charging electrode phenomenons such as contraposition is inaccurate each other while inserting in the time of also can avoiding the not contraposition of both installation sites, not only the assembling of electronic cigarette charging device is more convenient, and can reduction in the numbers of seconds, simplified assembling process, enhance productivity greatly, be easy to automated production.
In addition, by being formed to one, clamping structure opens lobe formula structure, electronic cigarette coordinates the sidewall of clamping fastening electronic cigarette by the described tensioner of opening lobe formula structural openings end, can clamp the electronic cigarette of fastening different-diameter size, electronic cigarette charging device can be charged for the electronic cigarette of different-diameter size.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, in one of preferred embodiment of the electronic cigarette charging device that the utility model provides, described electronic cigarette charging device is the electronic cigarette case that can place electronic cigarette and have charge function, it can be used for charging to the battery bar of electronic cigarette 1, as shown in Figure 3, electronic cigarette 1 comprises battery bar and for generation of the atomizer of smog, is provided with the first electrode connecting parts 11 and the second electrode connecting parts 12 that are electrically connected to the charging electrode of electronic cigarette charging device on an end face of battery bar.In the present embodiment, battery bar and atomizer, for removably connecting, be appreciated that in other embodiments, and atomizer and battery bar can be integrative-structures.
As shown in Figure 2, electronic cigarette charging device comprises the charging assembly 2 being electrically connected to for the electrode connecting parts with on electronic cigarette 1, and charging assembly 2 comprises mount pad 21, the first charging electrode 22, the second charging electrode 23 and clamping structure 3.The first charging electrode 22 and the second charging electrode 23 are electrically connected to the charging circuit of charging assembly 2 (not showing on figure) respectively, and hold and be fixed on mount pad 21, and the connected mode of the first charging electrode 22 and the second charging electrode 23 will specifically describe below.In addition, clamping structure 3 is connected to one end of mount pad 21 and one-body molded with mount pad 21, and clamping structure 3 arranges along the insertion path of electronic cigarette 1, for clamp described electronic cigarette 1 when electronic cigarette 1 inserts.
Insertion path by clamping structure 3 along electronic cigarette 1 arranges, can guarantee when electronic cigarette inserts clamping structure 3, electronic cigarette 1 and the charging electrode phenomenons such as contraposition is inaccurate each other in the time of can not inserting, can when inserting, from upper end, just start location, when continuing to insert, can guarantee that like this electronic cigarette 1 can not produce skew on insertion path, the clamping structure 3 that makes to extend outside mount pad 21 not only can accurately be located, and one-body molded, not only manufacture simple, facilitate the assembling of electronic cigarette charging device, and can reduction in the numbers of seconds, simplified assembling process, enhance productivity greatly, be easy to automated production.
As Fig. 4 and in conjunction with as shown in Fig. 2, the lobe formula of the opening structure that clamping structure 3 extends to form to the direction away from mount pad 21 for end face 211 lateral margins along mount pad 21, describedly open the clamping limb 32 that lobe formula structure comprises that at least two rightabouts towards the direction of insertion of electronic cigarette extend, clamping limb 32 extends to form a slot 31 that can be used for plugging electronic cigarette 1 along end face 211 lateral margins of mount pad 21, between clamping limb 32, with respect to slot 31, in axisymmetric mode, distributes.
One end of each clamping limb 32 is fixedly connected with mount pad 21, and the other end is free end, and the free end common combination of each clamping limb 32 forms an openend.When electronic cigarette 1 is charged, electronic cigarette 1 is inserted into slot 31, electronic cigarette 1 comes downwards to the end face 211 of mount pad 21 through described openend, make electrode connecting parts on electronic cigarette 1 be electrically connected to the charging electrode of charging assembly 2, and the tensioner by described openend coordinate to clamp, the sidewall of fastening electronic cigarette 1.Because open the openend of lobe formula structure and be have can elastic telescopic structure, therefore can clamp the electronic cigarette of fastening different-diameter size, electronic cigarette charging device can be charged for the electronic cigarette of different-diameter size, than fixed charging clip locking structure of the prior art, there is wider applicability and reliability.
In addition, for the better tensioner by described openend coordinates to clamp, the sidewall of fastening electronic cigarette 1, each clamping limb 32 tilts to extend towards the centerline direction near slot 31 away from one end of mount pad 21, and butt is to the circumferential lateral wall that is inserted in the electronic cigarette 1 in slot 31, now, angle shape between each clamping limb 32 and the described end face 211 of mount pad 21 is in an acute angle, owing to being the angle that is less than 90 degree, at openend, just formed an openend with respect to bottom (being one end that each clamping limb 32 is connected with the end face 211 of mount pad 21) radially inside stretching structure like this, make electronic cigarette at openend by elastic clamping.
In the present embodiment, clamping limb 32 comprises four, four clamping limbs 32 are equably around the end face 211 of mount pad 21 and form an encirclement space after extending away from described end face 211, described encirclement space forms the slot 31 that can be used for plugging electronic cigarette 1, each clamping limb 32 is distributed on the end face 211 of mount pad 21 and extends in axisymmetric mode with respect to slot 31, bottom (the stiff end of each clamping limb 32, one end that namely clamping limb 32 is connected with mount pad 21) by one-body molded, be fixedly linked with mount pad 21, the other end of each clamping limb 32 extends towards the side away from mount pad 21, and between each clamping limb 32 and the end face of mount pad 21, shape is in an acute angle, with guarantee each clamping limb 32 away from one end of mount pad 21 can butt to the circumferential lateral wall that is inserted in the electronic cigarette 1 in slot 31.
Four clamping limb 32 corresponding settings between two, each clamping limb 32 of four clamping limbs 32 is free end away from the other end of stiff end, each free end common combination forms an openend, when electronic cigarette 1 is inserted in slot 31, each clamping limb 32 can suitably regulate with the low electronic cigarette being inserted in slot 31 that is connected to, and so just can charge for the electronic cigarette of different size size.
Further, the outer surface of electronic cigarette 1 is scratched when preventing clamping limb 32 clamping electronic cigarette 1, on the outer surface that can connect at clamping limb 32 and electronic cigarette 1 (namely contact-making surface) between the two, fix a pad (not indicating on figure), described pad is bonded on the surface that clamping limb 32 and electronic cigarette 1 connect by adhesive linkage, pad can adopt the materials such as silica gel or rubber to make, because silica gel and rubber all have good elasticity, when effectively preventing scratching the lateral wall of electronic cigarette 1, can also improve the stability of clamping limb 32.
Further; in order to prevent that electronic cigarette 1 is in inserting the process of slot 31; the sidewall of clamping limb 32 can collide the end that electronic cigarette 1 is provided with electrode connecting parts; destroy the electrode connecting parts of electronic cigarette 1; thereby affect charging effect; can offer the guiding surface 321 that slot on one day 31 inner sides tilt at the openend of each clamping limb 32; avoid electronic cigarette 1 to collide the end that electronic cigarette 1 is provided with electrode connecting parts in inserting the process of slot 31, the arranging of guiding surface 321 can effectively be protected electronic cigarette not to be damaged thereby improve charge efficiency.
As Fig. 4 and in conjunction with as shown in Fig. 1, mount pad 21 comprises through hole 24, container cavity 25 and buckle 233.Through hole 24 is opened on the end face that mount pad 21 is connected with clamping structure 3, the inside of described mount pad 21 also offers the container cavity 25 being connected with through hole 24, the first charging electrode 22 can installing of elastic telescopic be fixed in container cavity 25, and at least part of through hole 24 that stretches out is electrically connected to the first electrode connecting parts 11.
Shown in Fig. 1, the first charging electrode 22 comprises the cylindrical electrode that is electrically connected to the first electrode connecting parts 11 (on figure not label), and the elastic component being fixedly connected with described cylindrical electrode (on figure not label).Described elastic component can be the structures such as spring or shell fragment, and one end of elastic component can be fixedly linked by the modes such as riveted joint or clamping and cylindrical electrode, and the other end of elastic component is electrically connected to the charging circuit (not indicating on figure) of charging assembly 2.One end of cylindrical electrode is fixedly connected with elastic component by the mode of riveting or welding, the other end of cylindrical electrode is conflicted to contact to form to conduct electricity with the first electrode connecting parts 11 and is connected, the concrete syndeton being arranged in mount pad 21 due to the first charging electrode 22 is prior art, so this architectural feature is not described in further detail.
Further, the surface that can mutually support in cylindrical electrode and the first electrode connecting parts 11 is one deck conductive sponge or conductive rubber fixedly, this conductive sponge or conductive rubber are bonded on the surface that cylindrical electrode and the first electrode connecting parts 11 support mutually by adhesive linkage, because conductive sponge or conductive rubber have satisfactory electrical conductivity and elasticity, when effectively preventing scratching the first electrode connecting parts 11, can also improve the stability of charging process.
Be appreciated that the first charging electrode 22 also separately any one in shell fragment electrode, cylindrical electrode or spring electrode make.
Further, mount pad 21 convexes with at least one for the buckle 233 of the second charging electrode 23 is installed on relative two side, and the end face 211 that is fixed with fixture 3 on described two side and mount pad 21 is adjacent.Buckle 233 can adopt integrated mode to be fixed on the sidewall of mount pad 21, also can be connected on the sidewall of mount pad 21 by modes such as welding, bonding or riveted joints.
Shown in Fig. 5, the second charging electrode 23 is roughly elastic piece structure, and it comprises connecting portion 231, bending part 232 and the first abutting part.On connecting portion 231, offer the suitable draw-in groove 234 of at least one and buckle 233, connecting portion 231 is fixed on the sidewall of mount pad 21 by draw-in groove 234.The first abutting part extends from a side bending of connecting portion 231, and is electrically connected to the charging circuit (not indicating on figure) of charging assembly 2.
In addition, bending part 232 extends from the opposite side bending of connecting portion 231, and butt to the second electrode connecting parts 12.Concrete, bending part 232 extends towards a side bending of the center line near mount pad 21, and bending part 232 is electrically connected to the second electrode connecting parts 12 through the space between two clamping limbs 32 of space setting.By adopting a plurality of the second charging electrodes 23 and the second electrode connecting parts 12 of electronic cigarette 1 to offset to form, be electrically connected to, not only can increase the contact area between the second charging electrode 23 and the second electrode connecting parts 12, and a plurality of the second charging electrodes 23 that are oppositely arranged can further hold electronic cigarette 1 to be fixed in slot 31, further electronic cigarette is clamped, electronic cigarette is not only clamped on openend like this, and when supporting the end face of mount pad, be also held and fixedly carry out Dual positioning, thereby further improved the stability of charging and improved charge efficiency.
In the present embodiment, the second charging electrode 23 comprises two, each second charging electrode 23 is fixed on the two side of mount pad 21 by draw-in groove 234 respectively, and the bending part 232 of each the second charging electrode 23 respectively butt to the second electrode connecting parts 12 forms conduction connection.By using two the second charging electrodes 23, can increase the contact area between the second charging electrode 23 and the second electrode connecting parts 12, make charging process more stable, and two the second charging electrodes 23 that are oppositely arranged can further hold electronic cigarette 1 to be fixed in slot 31, improve charge efficiency.
Be appreciated that, the second charging electrode 23 can be also one or more, and circular arc is arranged on the surface that bending part 232 and electronic cigarette 1 can be supported mutually, the second electrode connecting parts 12 of this circular arc and electronic cigarette 1 is suitable, adopt this arc-shaped structure can increase the contact area between bending part 232 and electronic cigarette 1, make whole charging process more stable.
Further, the surface that can mutually support in bending part 232 and the second electrode connecting parts 12 is one deck conductive sponge or conductive rubber fixedly, this conductive sponge or conductive rubber are bonded on the surface that bending part 232 and the second electrode connecting parts 12 offset by adhesive linkage, because conductive sponge or conductive rubber have satisfactory electrical conductivity and elasticity, when effectively preventing scratching the second electrode connecting parts 12, can also improve the stability of charging process.
Fig. 6 shows the electronic cigarette charging device that two of the utility model preferred embodiment provides, described electronic cigarette charging device is the electronic cigarette case that can place electronic cigarette and have charge function, it can be used for charging to the battery bar of electronic cigarette 1, and the difference of one of itself and embodiment is the structure of clamp structure 3.
As shown in Figure 7, the lobe formula of the opening structure that clamping structure 3 extends to form to the direction away from mount pad 21 for end face 211 lateral margins along mount pad 21, the described lobe formula structure of opening comprises at least two clamping limbs 32, clamping limb 32 extends to form a slot 31 that can be used for plugging electronic cigarette 1 along end face 211 lateral margins of mount pad 21, between clamping limb 32, with respect to slot 31, in axisymmetric mode, distributes.
One end of each clamping limb 32 is fixedly connected with mount pad 21, and the other end of each clamping limb 32 is free end, and the free end common combination of each clamping limb 32 forms an openend.When electronic cigarette 1 is charged, electronic cigarette 1 is inserted into slot 31, electronic cigarette 1 comes downwards to the described end face 211 of mount pad 21 through described openend, make electrode connecting parts on electronic cigarette 1 be electrically connected to the charging electrode of charging assembly 2, and the tensioner by described openend coordinate to clamp, the sidewall of fastening electronic cigarette 1.Because open the openend of lobe formula structure and be have can elastic telescopic structure, therefore can clamp the electronic cigarette of fastening different-diameter size, electronic cigarette charging device can be charged for the electronic cigarette of different-diameter size, than fixed charging clip locking structure of the prior art, there is wider applicability and reliability.
Concrete, for the better tensioner by described openend coordinates to clamp, the sidewall of fastening electronic cigarette 1, each clamping limb 32 has support division 33 at openend, and described support division 33 is along the radial contraction of slot 31 butt to the circumferential lateral wall that is inserted in the electronic cigarette 1 in slot 31.Be appreciated that support division 33 can be fixedly connected with clamping limb 32 by integrated mode, also can and withstand on clamping limb 32 by modes such as bonding, welding, clamping or riveted joints.Due to the radial contraction of support division 33 along slot 31, at openend, formed an openend with respect to bottom (being one end that each clamping limb 32 is connected with the end face 211 of mount pad 21) inside stretching structure radially like this, make electronic cigarette at openend by elastic clamping.
In the present embodiment, clamping limb 32 comprises two, two clamping limbs 32 form an encirclement space around the end face 211 of mount pad 21 symmetrically, described encirclement space forms the slot 31 can be used for plugging electronic cigarette 1, and each clamping limb 32 is distributed on the end face 211 of mount pad 21 and extends in axisymmetric mode with respect to slot 31.And one end of each clamping limb 32 (stiff end) is fixedly linked with mount pad 21 by one-body molded, the other end of each clamping limb 32 extends towards the side away from mount pad 21, and on each clamping limb 32, be provided with support division 33, with guarantee each clamping limb 32 away from one end of mount pad 21 can butt to the circumferential lateral wall that is inserted in the electronic cigarette 1 in slot 31.
The free end common combination of two clamping limbs 32 forms an openend, when electronic cigarette 1 is inserted in slot 31, each clamping limb 32 can suitably regulate with the low electronic cigarette being inserted in slot 31 that is connected to, and so just can charge for the electronic cigarette of different size size.
Further, circular arc is arranged on the surface that support division 33 and electronic cigarette 1 can be supported mutually, the circumferential lateral wall of this circular arc and electronic cigarette 1 is suitable, adopt this arc-shaped structure can increase the contact area between support division 33 and electronic cigarette 1, the stability that improves clamping limb 32, makes more firm being fixed in slot 31 of electronic cigarette 1.
Further, the outer surface of electronic cigarette 1 is scratched when preventing support division 33 clamping electronic cigarette 1, on the outer surface that can connect at support division 33 and electronic cigarette 1 (namely contact-making surface) between the two, fix a pad (not indicating on figure), described pad is bonded on the surface that support division 33 and electronic cigarette 1 connect by adhesive linkage, pad can adopt the material systems such as silica gel or rubber, because silica gel and rubber all have good elasticity, when effectively preventing scratching the lateral wall of electronic cigarette 1, can also improve the stability of clamping limb 32.
Further; in order to prevent that electronic cigarette 1 is in inserting the process of slot 31; clamping limb 32 collides the end that electronic cigarette 1 is provided with electrode connecting parts; destroy the electrode connecting parts of electronic cigarette 1; thereby affect charging effect; can offer the guiding surface (321) that slot on one day 31 inner sides tilt at the openend of each clamping limb 32; avoid electronic cigarette 1 to collide the end that electronic cigarette 1 is provided with electrode connecting parts in inserting the process of slot 31, the arranging of guiding surface can effectively be protected electronic cigarette not to be damaged thereby improve charge efficiency.
The utility model also provides a kind of charging method of electronic cigarette charging device, comprises the steps:
S1, inserting step: by electronic cigarette 1 be inserted into along the insertion path of described electronic cigarette 1 arrange and with the integrated clamping structure 3 of mount pad 21 in, the clamping limb 32 by described clamping structure 3 clamps described electronic cigarette 1.
Concrete, the lobe formula of the opening structure that clamping structure 3 extends to form to the direction away from mount pad 21 for the end face lateral margin along mount pad 21, the described lobe formula structure of opening comprises at least two clamping limbs 32, clamping limb 32 extends to form a slot 31 that can be used for plugging electronic cigarette 1 along an end face lateral margin of mount pad 21, one end of each clamping limb 32 is fixedly connected with mount pad 21, the other end is free end, and the free end common combination of each clamping limb 32 forms an openend, electronic cigarette is inserted in slot 31, tensioner by described openend coordinates to clamp, the sidewall of fastening electronic cigarette 1.
S2, charge step: by the electrode connecting parts on described electronic cigarette 1 respectively with charging assembly 2 elasticity butts, realize electrical connection each other.
Concrete, charging assembly 2 comprises first charging electrode 22 and at least one second charging electrode 23 that is fixed on mount pad 21 and is electrically connected to the charging circuit of charging assembly 2, the first charging electrode 22 and plug-in mounting be to the first electrode connecting parts 11 elasticity butts of the electronic cigarette 1 in described slot 31, and the second charging electrode 23 and plug-in mounting are to the second electrode connecting parts 12 elasticity butts of the electronic cigarette 1 in slot 31.
In sum, by adopting integrated mode clamping structure to be fixedly connected on to one end of mount pad, facilitate user can realize the stability clamping in to electronic cigarette charging, can guarantee to insert in the process of clamping structure at electronic cigarette, electronic cigarette and the charging electrode phenomenons such as contraposition is inaccurate each other in the time of can not inserting, not only the assembling of electronic cigarette charging device is more convenient, and can reduction in the numbers of seconds, simplified assembling process, enhance productivity greatly, be easy to automated production.In addition, because clamping structure is for the end face lateral margin along mount pad is to the lobe formula of the opening structure extending to form away from mount pad direction, electronic cigarette coordinates the sidewall of clamping fastening electronic cigarette by the described tensioner of opening lobe formula structural openings end, therefore can clamp the electronic cigarette of the different sizes of fastening, described electronic cigarette charging device can be charged for the electronic cigarette of different-diameter size.
Although the utility model describes by specific embodiment, it will be appreciated by those skilled in the art that, in the situation that not departing from the utility model scope, can also carry out various conversion and be equal to alternative the utility model.In addition, for particular condition or material, can make various modifications to the utility model, and not depart from scope of the present utility model.Therefore, the utility model is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall within the scope of the utility model claim.