CN206932262U - The electric expansion bar group structure of self-shooting bar - Google Patents

Abstract

The utility model discloses a kind of electric expansion bar group structure of self-shooting bar, including telescopic tube group, the fixed support positioned at telescopic tube group upper end, positioned at the control handle of telescopic tube group lower end and the telescoping drive mechanism in telescopic tube group；The telescopic tube group at least has three section sleeve pipes, and the telescoping drive mechanism includes at least three screw rods being mutually spirally connected, passes through the rotation of each screw rod of power source drive.The utility model is by controlling the power source in handle to give the power that the screw rod in telescoping drive mechanism rotates, so that rotate between each screw rod being mutually spirally connected and change the length of telescoping drive mechanism, telescoping drive mechanism drive self-shooting bar telescopic tube group realize Automatic-expanding and shrink function and can in the range of collapsing length strong fix, make use of the people to self-shooting bar more convenient, fast.

Description

The electric expansion bar group structure of self-shooting bar

Technical field

The utility model is the electric expansion bar group structure that a kind of self-shooting bar is particularly related on a kind of self-shooting bar structure.

Background technology

Self-shooting bar is the self-timer emperorship in the fashionable world, and it can be at 20 centimetres to arbitrarily flexible between 120 centimetre lengths, use Mobile phone or idiot camera need to be only fixed on self-shooting bar by person, and multi-angle self-timer is can be achieved with by remote control.Major part is certainly The range of stretch of dabber also has the size between 65 ~ 135 centimetres, the selection of length can be according to different between 24 ~ 94 centimetres Need to judge, but need to be portable, retractable structure makes it be more suitable for being put into packsack.

Self-shooting bar is mainly made up of expansion link, fixed support, wireless remote control automatic timer or lever button, and fixed support can be with Mobile phone, camera, or even tablet personal computer are picked up, the expansion link of adjustable in length brings wider array of shooting angle, passes through wireless remote The photographing device such as control automatic timer or the i.e. controllable mobile phone of expansion link bottom lever button is taken pictures.

The expansion link wherein used is socketed to form by more piece rod member, Telescopic rod structure common at present, and one kind is to utilize Damping piece between loop bar realize each rod member mutually deploy or shrink after positioning；A kind of is the positioning using loop bar end set Part realizes the positioning after each rod member expansion or contraction.No matter the structure of which kind of mode, the exhibition of this expansion link receive be both needed to it is manually operated, Need to adjust length needed for expansion link repeatedly in use, the length needed for user can not be reached as early as possible, thus working costs be present Laborious inconvenience case, and for utilizing the self-shooting bar of damping piece, the big photographing device of large scale weight is generally unsuitable for, Because self-shooting bar is usually to tilt to be applicable, the big photographing device of weight can make it that expansion link retraction can not be used.

Utility model content

The purpose of this utility model is that Automatic-expanding and automatic retracted can be realized by providing one kind, and real in any position The electric expansion bar group structure of the self-shooting bar of existing strong fix, makes self-shooting bar scaling operation more easy and convenient.

In order to reach above-mentioned purpose, solution of the present utility model is：

A kind of electric expansion bar group structure of self-shooting bar, including telescopic tube group, the fixation positioned at telescopic tube group upper end Support, the control handle positioned at telescopic tube group lower end, it also includes the telescoping drive mechanism in telescopic tube group；It is described Telescopic tube group at least has three section sleeve pipes, is followed successively by upper tube, middle pipe and down tube from top to bottom；Each sleeve pipe is not sent out between each other Raw to rotate and be provided with escapement, the down tube lower end is fixed on control handle；The telescoping drive mechanism includes at least three The screw rod that root is mutually spirally connected, is followed successively by lower beam, middle bar, upper boom that diameter gradually increases or is gradually reduced from bottom to top, it is described on Bar top is fixedly connected with upper tube top, and the lower end of the lower beam is fixedly connected with the power source in control handle, passes through power Source drives the rotation of each screw rod.

The upper tube, middle pipe, down tube are the hexa-prism structure to cooperate.

The upper tube, middle pipe, down tube are the cylindrical-shaped structure to cooperate, and the upper tube, middle pipe, down tube are provided with vertically Direction and the chute and slide rail to cooperate.

The upper end of the upper tube is fixed with one to be fixedly connected with the upper pipe plug of upper boom.

The upper tube, middle pipe, the diameter of down tube are sequentially reduced；The escapement includes first that upper tube lower end build-in has Upper tube retainer plate, the top of middle pipe be fixed with first in pipe plug, the lower end build-in of middle pipe have the first middle pipe retainer plate, under First time pipe plug being fixed with the top of pipe；The first upper tube retainer plate is a ring body, and forms convex edge inwards；It is described The external profile diameter of pipe plug is more than the internal diameter of convex edge, the first middle pipe retainer plate also ring body, and being formed inwards in first Flange；The external profile diameter of first time pipe plug is more than the internal diameter of flange, pipe plug and first time pipe plug in described first With central through hole.

The upper tube, middle pipe, the diameter of down tube increase successively；The escapement includes second that upper tube lower end build-in has The second middle pipe retainer plate that upper pipe plug, the top of middle pipe are fixed with, the lower end build-in of middle pipe have second in pipe plug, down tube The second down tube retainer plate for being fixed with of top；The upper pipe plug is outwardly formed lug；The second middle pipe retainer plate it is interior Edge diameter is less than the external diameter of lug, and pipe plug is outwardly formed chimb in described second；The inner edge of the second down tube retainer plate is straight Footpath is less than the external diameter of chimb, and pipe plug is provided with central through hole in pipe plug and second on described second.

Lower beam, middle bar, the diameter of upper boom in the telescoping drive mechanism increase successively, and the lateral surface of the lower beam has External screw thread, the medial surface of middle bar have the internal thread coordinated with the external screw thread of lower beam, and the lateral surface of middle bar has external screw thread, upper boom Medial surface there is the internal thread coordinated with the external screw thread of middle bar.

Lower beam, middle bar, the diameter of upper boom in the telescoping drive mechanism are sequentially reduced, and the medial surface of the lower beam has Internal thread, the lateral surface of middle bar have the external screw thread with the screw-internal thread fit of lower beam, and the medial surface of middle bar has internal thread, upper boom Lateral surface there is external screw thread with the screw-internal thread fit of middle bar.

Lower beam, middle bar, the diameter of upper boom in the telescoping drive mechanism increase successively, and the lateral surface of the lower beam has First external screw thread, lower beam top are provided with first time stem cover, and first time stem cover forms the protuberance of prominent lower beam outer rim； The lateral surface of the middle bar has the second external screw thread, and the bottom of middle bar is provided with stem nut in first coordinated with the first external screw thread Portion, stem cover during the middle bar top is provided with first, protuberance of the stem cover formed with bar outer rim in protrusion in described first；Institute The bottom for stating upper boom is provided with the first upper boom nut portions coordinated with the second external screw thread.

The bottom of the lateral surface of the middle bar is provided with the first outside convex wall.

Lower beam, middle bar, the diameter of upper boom in the telescoping drive mechanism are sequentially reduced, and the top of the lower beam is set inwards There are the second lower beam nut portions, the lateral surface of the middle bar has the second external screw thread coordinated with the second lower beam nut portions, middle bar bottom Stem cover during portion is provided with second, in described second stem cover formed it is prominent in bar outer rim protuberance；The top of middle bar is set inwards Stem nut portion in having second, the upper boom bottom are provided with stem cover on second, and stem cover is formed with prominent upper boom outer rim on second Protuberance, the lateral surface of upper boom is provided with the 3rd external screw thread coordinated with stem nut portion in second.

The top of the lateral surface of the middle bar is provided with the second outside convex wall.

The power source is mechanically operated change-speed gearing group or rotating motor.

The switch for starting self-timer and the button for controlling power source are provided with the control handle.

When self-shooting bar needs expansion, pressing control handle button starts power source output power, telescoping drive mechanism In each screw rod cause telescoping drive mechanism length to become big toward departing from the direction that is spirally connected and rotate, upper boom drives upper tube to rise, upper tube Rising can drive middle pipe to rise so that whole telescopic tube group expansion；When needing to shrink, then press the button of control handle Start power source, each screw rod each rotates toward the rotation direction being mutually spirally connected, and the length of telescoping drive mechanism diminishes, upper boom band Dynamic upper tube moves down fit with respect to middle pipe, while the related middle pipe of upper tube moves down, and pulls middle pipe to be moved down with respect to down tube Fit, realize the contraction of telescopic tube group.

The utility model is the power by controlling the power source in handle to give the screw rod rotation in telescoping drive mechanism, So that rotating between each screw rod being mutually spirally connected and changing the length of telescoping drive mechanism, telescoping drive mechanism drives certainly The telescopic tube group of dabber realize Automatic-expanding and shrink function and can in the range of collapsing length strong fix, and control Handle is provided with the switch for starting self-timer, makes people's self-timer more convenient, therefore the utility model allows use of the people to self-shooting bar It is more convenient, fast.

Brief description of the drawings

Fig. 1 is deployed condition schematic diagram of the present utility model（Upper tube, middle pipe, the diameter of down tube are sequentially reduced）；

Fig. 2 is contraction state schematic diagram of the present utility model（Upper tube, middle pipe, the diameter of down tube are sequentially reduced）；

Fig. 3 is deployed condition schematic diagram of the present utility model（Upper tube, middle pipe, the diameter of down tube increase successively）；

Fig. 4 is contraction state schematic diagram of the present utility model（Upper tube, middle pipe, the diameter of down tube increase successively）；

Fig. 5 is the schematic cross-sectional view of the deployed condition of the utility model embodiment one；

Fig. 6 is enlarged drawing at Fig. 5 a；

Fig. 7 is enlarged drawing at Fig. 5 b；

Fig. 8 is the schematic cross-sectional view of the contraction state of the utility model embodiment one；

Fig. 9 is enlarged drawing at Fig. 8 d；

Figure 10 is the schematic cross-sectional view of the deployed condition of the utility model embodiment two；

Figure 11 is enlarged drawing at Figure 10 e；

Figure 12 is enlarged drawing at Figure 10 f；

Figure 13 is the schematic cross-sectional view of the contraction state of the utility model embodiment two；

Figure 14 is enlarged drawing at Figure 13 g；

Figure 15 is the schematic cross-sectional view of the deployed condition of the utility model embodiment three；

Figure 16 is enlarged drawing at Figure 15 h；

Figure 17 is enlarged drawing at Figure 15 i；

Figure 18 is the schematic cross-sectional view of the contraction state of the utility model embodiment three；

Figure 19 is enlarged drawing at Figure 18 j；

Figure 20 is the schematic cross-sectional view of the deployed condition of the utility model embodiment four；

Figure 21 is enlarged drawing at Figure 20 k；

Figure 22 is enlarged drawing at Figure 20 m；

Figure 23 is the schematic cross-sectional view of the contraction state of the utility model embodiment four；

Figure 24 is enlarged drawing at Figure 23 n；

Figure 25 is the sectional view of the utility model telescopic tube group（Upper tube, middle pipe, the diameter of down tube increase successively）.

Embodiment

In order to which the technical solution of the utility model is explained further, the utility model is entered below by specific embodiment Row elaborates.

As shown in Fig. 1 to Figure 25, the utility model discloses a kind of electric expansion bar group structure of self-shooting bar, including flexible Sleeve pipe group A, the fixed support 1 positioned at telescopic tube group A upper ends, the control handle C positioned at telescopic tube group A lower ends, it is described solid Fixed rack 1 can fix the photographing devices such as mobile phone, flat board, digital camera, can be provided with control handle C and start mobile phone, flat board, number The switch C3 of code camera self-timer；.

Key of the present utility model is：Also include the telescoping drive mechanism B in the telescopic tube group A, it is described flexible Driving structure B provides power by the power source C2 in control handle C, can set the button controlled on handle C by one C1 controls power source C2 and then controls telescoping drive mechanism B to drive telescopic tube group A stretching motions.

Wherein described telescopic tube group A at least has the hollow sleeve pipe of three sections, is followed successively by upper tube A1, middle pipe A2 from top to bottom And down tube A3；The upper tube A1, middle pipe A2 and down tube A3 do not relatively rotate and are provided with escapement, prevent telescopic tube group A occurs sleeve pipe and departs from the phenomenon for causing telescopic tube group A to damage after the expansion；Wherein described upper tube A1 tops and fixed support 1 is be hinged, and the down tube A3 lower ends are fixed on control handle C.

The upper tube A1, middle pipe A2, down tube A3 can be the hexa-prism structure to cooperate, mutually block and prevent Relative rotation, the upper tube A1, middle pipe A2, down tube A3 are not limited to six prism structures or other polygon prism knots Structure；Certain upper tube A1, middle pipe A2, down tube A3 are not limited to polygon prism structure, can also be cylindrical-shaped structure, it is described on Pipe A1, middle pipe A2, down tube A3 are provided with the chute 6 and slide rail 7 along the vertical direction and to cooperate, also may be used by chute 6 and slide rail 7 To limit upper tube A1, middle pipe A2, down tube A3 relative rotation.

Coordinate shown in Fig. 1, Fig. 2 and Fig. 5 to Figure 24, the upper tube A1, middle pipe A2, down tube A3 diameter can subtract successively It is small；The escapement includes the first upper tube retainer plate 2 for having of upper tube A1 lower ends build-in, first that middle pipe A2 top is fixed with First time pipe close being fixed with the top of the first middle pipe retainer plate 4 that middle pipe plug 3, middle pipe A2 lower end build-in have, down tube A3 Son 5；Pipe plug 3 and first time pipe plug 5 are respectively provided with central through hole so that following telescoping drive mechanism B is worn in described first Put, the first upper tube retainer plate 2 is a ring body, and forms convex edge inwards；The external profile diameter of pipe plug 3 is big in described first Internal diameter in convex edge so that pipe plug 3 can block convex edge in first, and the first middle pipe retainer plate 4 also ring body, and Flange is formed inwards；The external profile diameter of first time pipe plug 5 is more than the internal diameter of flange so that lower pipe plug 5 can block Flange.Therefore it is to realize mutual annexation using respective plug and retainer plate between above-mentioned three sections sleeve pipe, so as to form Mutually stretching, extension is with shrinking the telescopic tube group A not departed from.

Coordinate shown in Fig. 5 to Figure 14, telescoping drive mechanism B includes at least three screw rods being mutually spirally connected, from bottom to top Lower beam B1, middle bar B2, upper boom B3 that diameter gradually increases or is gradually reduced are followed successively by, the upper boom B3 tops are consolidated with upper tube top Fixed connection, the lower end of the lower beam B1 are fixedly connected with the power source C2 in control handle C, and above-mentioned spiral shell is driven by power source C2 The rotation of bar.The upper end of the upper tube A1 can be fixed with one pipe plug to connect upper boom B3.

It is described to control the cover body that handle C is an accommodating power source C2, a button C1 is provided with to open on control handle C cover bodies Dynamic power source C2 rotating forward power and Reverse Power, power source C2 can be the machine driving that change-speed gearing group is formed, and can also adopt With rotating motor driven.

Coordinate Fig. 2, Fig. 4, Fig. 8, Figure 13, shown in Figure 18 Figure 23, when normality folds, telescopic tube group A each section first Sleeve pipe is that contracting is nested together, and lower beam B1, middle bar B2, upper boom B3 have the larger area that is spirally connected.

As shown in Fig. 1, Fig. 3, Fig. 5, Figure 10, Figure 15 or Figure 20, when the utility model deploys, control handle C is hold by one hand Power source C2 outputs can be started with pressing control handle C button C1 and rotate forward power, power source C2 can drive lower beam B1 to rotate, Middle bar B2, upper boom B3 also produce relative rotation, and are each rotated toward the rotation direction for departing from the relation that is spirally connected so that whole telescopic drive Mechanism B length becomes big, and upper boom B3 drives upper tube A1 to rise, and upper tube A1, which rises, can drive middle pipe A2 to rise so that whole telescopic Pipe group A expansion, due to being mutual bolt between each screw rod in the range of collapsing length, therefore after stopping operating, The length of telescoping drive mechanism is fixed so that the phenomenon to bounce back will not occur because of external force of gravity in three section sleeve pipes of expansion, The strong fix of self-shooting bar can be realized.

As shown in Fig. 2, Fig. 4, Fig. 8, Figure 13, Figure 18 or Figure 23, when the utility model is shunk, it is hold by one hand control and holds The button C1 for C being pressed again control handle C starts power source C2 output Reverse Powers, and power source C2 can reversely turn with lower beam B1 Dynamic, middle bar B2, upper boom B3 also produce relative rotation, and are each rotated toward the rotation direction being mutually spirally connected, telescoping drive mechanism B length Degree diminishes, and upper boom B3 drives upper tube A1 to move down fit with respect to middle pipe A2, while upper tube A1 can also drive middle pipe A2 to moving down It is dynamic so that middle pipe A2 moves down fit with respect to down tube A3, realizes whole telescopic tube group A contraction.

In embodiment one of the present utility model, as shown in Figures 5 to 9, lower beam B1 in the telescoping drive mechanism B, Middle bar B2, upper boom B3 diameter increase successively, and the lateral surface of the lower beam B1 has an external screw thread, middle bar B2 medial surface have with The internal thread that lower beam B1 external screw thread coordinates, middle bar B2 lateral surface have external screw thread, and upper boom B3 medial surface has and middle bar The internal thread that B2 external screw thread coordinates, can be with by rationally setting the mutual frictional force of lower beam B1, middle bar B2, upper boom B3 Relatively rotated while realization between three, and pass through the escapement between telescopic tube group A so that telescopic tube group A Telescoping drive mechanism B maximum deployed length can be limited when deploying maximum length, avoids lower beam B1, middle bar B2, upper boom B3 Depart from the mutual relation that is spirally connected, cause telescoping drive mechanism B to use；Can also be by controlling power source C2 rotatings Time controls each screw rod rotation time and then controls telescoping drive mechanism B maximum deployed length.

In embodiment two of the present utility model, as shown in FIG. 10 to 14, the lower beam in the telescoping drive mechanism B B1, middle bar B2, upper boom B3 diameter are sequentially reduced, and the medial surface of the lower beam B1 has internal thread, middle bar B2 outside mask Have an external screw thread with lower beam B1 screw-internal thread fit, middle bar B2 medial surface has an internal thread, upper boom B3 lateral surface have with The external screw thread of the screw-internal thread fit of middle bar, it is same can also with reference to embodiment one by rationally set lower beam B1, middle bar B2, on Frictional force mutual bar B3, it is possible to achieve relatively rotated while between three, and by between telescopic tube group A Escapement so that telescopic tube group A can limit telescoping drive mechanism B maximum deployed length when deploying maximum length, Avoid lower beam B1, middle bar B2, upper boom B3 from departing from the mutual relation that is spirally connected, cause telescoping drive mechanism B to use；Also may be used To control each screw rod rotation time by controlling the power source C2 rotating times to control telescoping drive mechanism B maximum Length of run.

In embodiment three of the present utility model, as shown in Figure 15 to Figure 19, the lower beam in the telescoping drive mechanism B B1, middle bar B2, upper boom B3 diameter increase successively, and the lateral surface of the lower beam B1 has the first external screw thread, and lower beam B1 tops are set There are first time stem cover B11, first time stem cover B11 to form the protuberance of prominent lower beam B1 outer rims, the middle bar B2's Internal diameter is more than or equal to the external diameter of first time stem cover B11 protuberance, and the lateral surface of the middle bar B2 has the second external screw thread, middle bar B2 bottom is provided with stem nut portion B21 in first coordinated with the first external screw thread, rod end during the middle bar B2 tops are provided with first B22 is covered, protuberances of the stem cover B22 formed with bar B2 outer rims in protrusion in described first, the internal diameter of the upper boom B3 is more than etc. The external diameter of stem cover B22 protuberances in first, upper boom B3 bottom are provided with stem nut on first coordinated with the second external screw thread Portion B31；When telescoping drive mechanism B deploys, first time stem cover B11 has barrier effect to stem nut portion B21 in first, and first Middle stem cover B22 has barrier effect to the first upper boom nut portions B31, therefore passes through bar spiral shell in first time stem cover B11 and first Stem cover B22 and the first upper boom nut portions B31 setting can prevent lower beam B1, middle bar B2, upper boom B3 in female portion B21, first Depart from the mutual relation that is spirally connected during expansion.

Further, to avoid because upper boom B3 length is more than middle bar B2 length, telescoping drive mechanism B is caused to be sent out when shrinking The relation disengaging that is spirally connected between raw upper boom B3 and middle bar B2, the bottom of the lateral surface of the middle bar B2 is provided with the first outside convex wall B23, the first convex wall B23 have barrier effect to upper boom B3, avoid the relation disengaging that is spirally connected between upper boom B3 and middle bar B2.

For embodiment three of the present utility model, it is necessary to which explanation is adopted without the concern in embodiment one and embodiment two To relatively rotate so that three simultaneously between three with the frictional force between control lower beam B1, middle bar B2, upper boom B3 Deploy simultaneously or shrink to avoid departing between three the method for the relation that is spirally connected, can arbitrarily set lower beam B1, middle bar B2, on Friction factor between bar B3, the sequencing problem rotated is not considered, because first time stem cover B11, first in embodiment three Middle stem cover B22, the first convex wall B23 and control handle C can play a part of similar bolt head so that between three screw rods It can lock, such as：Lower beam B1 first rotates relative to middle bar B2, and middle bar B2 rotates relative to upper boom B3 again, when expansion First relative lower beam B1 rises middle bar B2, and phase centering rod B2 does not rise upper boom B3, when central bar B2 rises to the top, bar in first Nut portions B21 blocks first time stem cover B11 so that lower beam B1 and middle bar B2 are mutually locked and do not produced rotation, and power source C2 continues Output rotates forward power, thus middle bar B2 can relative upper boom B3 rotate, upper boom B3 risings, middle bar B2 passes through stem cover B22 in first Lock upper boom B3 so that lower beam B1, middle bar B2, upper boom B3 can deploy successively；During contraction, middle bar B2 elder generations fit lower beam B1, control Handle C processed props up middle bar B2 bottoms, locks lower beam B1 and middle bar B2, and then middle bar B2 locks upper boom again by the first convex wall B23 B3, realize lower beam B1, middle bar B2, upper boom B3 contraction successively.

In example IV of the present utility model, as shown in Figure 20 to Figure 24, the lower beam in the telescoping drive mechanism B B1, middle bar B2, upper boom B3 diameter are sequentially reduced, and the top of the lower beam B1 is provided with the second lower beam nut portions B11 ', institute inwards Stating middle bar B2 lateral surface has the second external screw thread coordinated with the second lower beam nut portions B11 ', and middle bar B2 bottoms are provided with second Stem cover B22 ', in described second stem cover B22 ' formed it is prominent in bar B2 outer rims protuberance, the internal diameter of the lower beam B1 is big The external diameter of stem cover B22 ' protuberance in equal to second, stem nut portion B21 ' during middle bar B2 top is provided with second inwards, The upper boom B3 bottoms are provided with stem cover B31 ' on second, and stem cover B31 ' is formed with prominent upper boom B3 outer rims on described second Protuberance, the internal diameter of the middle bar B2 are more than or equal to the external diameter of stem cover B31 ' protuberances on second, and upper boom B3 lateral surface is set There is the 3rd external screw thread coordinated with stem nut portion B21 ' in second；When telescoping drive mechanism B deploys, stem cover B22 ' in second There is barrier effect to the second lower beam nut portions B11 ', stem cover B31 ' has stop to make stem nut portion B21 ' in second on second With, therefore pass through bar spiral shell in stem cover B31 ' and second on stem cover B22 ' and the second lower beam nut portions B11 ' in second, second Female portion B21 ' setting can prevent from departing from the mutual relation that is spirally connected when lower beam B1, middle bar B2, upper boom B3 expansion.

Further, to avoid because lower beam B1 length is more than middle bar B2 length, telescoping drive mechanism B is caused to be sent out when shrinking The relation disengaging that is spirally connected between bar B1 and middle bar B2 is given birth to, the top of the lateral surface of the middle bar B2 is provided with the second outside convex wall B23 ', the second convex wall B23 ' have barrier effect to lower beam B1, avoid the relation disengaging that is spirally connected between lower beam B1 and middle bar B2.

For example IV of the present utility model, it is necessary to which explanation is again without consideration embodiment one and embodiment two It is middle using control lower beam B1, middle bar B2, the frictional force between upper boom B3 to relatively rotate between three simultaneously so that Three deploys or shunk to avoid departing between three the method for the relation that is spirally connected simultaneously, can arbitrarily set lower beam B1, middle bar Friction factor between B2, upper boom B3, the sequencing problem rotated is not considered, because stem cover in second in example IV B22 ', it can also play a part of bolt head at the top of stem cover B31 ', the second convex wall B23 ' and upper tube A1 on second so that three It can successively rotate and mutually lock between root screw rod.

In four above-mentioned embodiments, upper tube A1, middle pipe A2, down tube A3 diameter in the telescopic tube group A of use are It is sequentially reduced, actually described upper tube A1, middle pipe A2, down tube A3 diameter can also increase successively；Coordinate Fig. 2, Fig. 3, Figure 25 It is shown, the escapement include that upper tube A1 lower ends build-in has second on pipe plug 5 ', middle pipe A2 top be fixed with the Two middle pipe retainer plates 4 ', middle pipe A2 lower end build-in have second in pipe plug 3 ', be fixed with the top of down tube A3 second under Pipe retainer plate 2 '；The upper pipe plug 5 ' is outwardly formed lug；The inner edge diameter of the second middle pipe retainer plate 4 ' is less than lug External diameter so that the second middle pipe retainer plate 4 ' can block lug, and pipe plug 3 ' is outwardly formed chimb in described second；It is described The inner edge diameter of second down tube retainer plate 2 ' is less than the external diameter of chimb so that the second down tube retainer plate 2 ' can block chimb, institute State on second that pipe plug 3 ' is also equipped with central through hole so that telescoping drive mechanism B is placed in pipe plug 5 ' and second.

Structure in summary, the utility model are by controlling the power source C2 in handle to give in telescoping drive mechanism B Screw rod rotate power so that rotate between each screw rod being mutually spirally connected and change telescoping drive mechanism B length, The telescopic tube group A of telescoping drive mechanism B drive self-shooting bars realizes Automatic-expanding and the function of shrinking and can be in collapsing length model Interior strong fix is enclosed, and controls handle C to be provided with the switch C3 for starting self-timer, makes use of the people to self-shooting bar more square Just, fast.

Above-described embodiment and schema and non-limiting product form of the present utility model and style, any art The appropriate change or modification that those of ordinary skill is done to it, all should be regarded as not departing from patent category of the present utility model.

Claims (14)

1. a kind of electric expansion bar group structure of self-shooting bar, including telescopic tube group, the fixed branch positioned at telescopic tube group upper end Frame, the control handle positioned at telescopic tube group lower end, it is characterised in that：Also include the telescopic drive machine in telescopic tube group Structure；

The telescopic tube group at least has three section sleeve pipes, is followed successively by upper tube, middle pipe and down tube from top to bottom；Each sleeve pipe is mutual Between do not rotate and be provided with escapement, the down tube lower end is fixed on control handle；

The telescoping drive mechanism includes at least three screw rods being mutually spirally connected, be followed successively by from bottom to top diameter gradually increase or by Decrescence small lower beam, middle bar, upper boom, the upper boom top are fixedly connected with upper tube top, and lower end and the control of the lower beam are held Interior power source is fixedly connected, passes through the rotation of each screw rod of power source drive.

2. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：The upper tube, middle pipe, down tube For the hexa-prism structure of mutual cooperation.

3. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：The upper tube, middle pipe, down tube For the cylindrical-shaped structure of mutual cooperation, the upper tube, middle pipe, down tube are provided with the chute and cunning along the vertical direction and to cooperate Rail.

4. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：The upper end of the upper tube is fixed Have one to be fixedly connected with the upper pipe plug of upper boom.

5. the electric expansion bar group structure of the self-shooting bar as described in Claims 1-4 any one, it is characterised in that：On described Pipe, middle pipe, the diameter of down tube are sequentially reduced；The escapement include upper tube lower end build-in have the first upper tube retainer plate, in The top of pipe be fixed with first in the first middle pipe retainer plate for having of pipe plug, the lower end build-in of middle pipe, the top of down tube fix First time pipe plug having；The first upper tube retainer plate is a ring body, and forms convex edge inwards；Pipe plug in described first External profile diameter be more than convex edge internal diameter, the first middle pipe retainer plate also ring body, and form flange inwards；Described first The external profile diameter of lower pipe plug is more than the internal diameter of flange, and pipe plug and first time pipe plug have central through hole in described first.

6. the electric expansion bar group structure of the self-shooting bar as described in Claims 1-4 any one, it is characterised in that：On described Pipe, middle pipe, the diameter of down tube increase successively；The escapement include upper tube lower end build-in have second on pipe plug, middle pipe Top the second middle pipe retainer plate, the lower end build-in of middle pipe that are fixed with have second in pipe plug, be fixed with the top of down tube The second down tube retainer plate；The upper pipe plug is outwardly formed lug；The inner edge diameter of the second middle pipe retainer plate is less than convex The external diameter of ear, pipe plug is outwardly formed chimb in described second；The inner edge diameter of the second down tube retainer plate is less than chimb External diameter, pipe plug is provided with central through hole in pipe plug and second on described second.

7. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：In the telescoping drive mechanism Lower beam, middle bar, the diameter of upper boom increase successively, the lateral surface of the lower beam has an external screw thread, the medial surface of middle bar have with The internal thread that the external screw thread of lower beam coordinates, the lateral surface of middle bar have external screw thread, and the medial surface of upper boom has the outer spiral shell with middle bar The internal thread that line coordinates.

8. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：In the telescoping drive mechanism Lower beam, middle bar, the diameter of upper boom be sequentially reduced, the medial surface of the lower beam has an internal thread, the lateral surface of middle bar have with The external screw thread of the screw-internal thread fit of lower beam, the medial surface of middle bar have internal thread, and the lateral surface of upper boom has the interior spiral shell with middle bar The external screw thread that line coordinates.

9. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：In the telescoping drive mechanism Lower beam, middle bar, the diameter of upper boom increase successively, the lateral surface of the lower beam has the first external screw thread, and lower beam top is provided with the Stem cover once, first time stem cover form the protuberance of prominent lower beam outer rim；The lateral surface of the middle bar has second External screw thread, the bottom of middle bar are provided with stem nut portion in first coordinated with the first external screw thread, and the middle bar top is provided with first Stem cover, protuberance of the stem cover formed with bar outer rim in protrusion in described first；The bottom of the upper boom be provided with outside second The first upper boom nut portions that screw thread coordinates.

10. the electric expansion bar group structure of self-shooting bar as claimed in claim 9, it is characterised in that：The lateral surface of the middle bar Bottom be provided with the first outside convex wall.

11. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：The telescoping drive mechanism In lower beam, middle bar, the diameter of upper boom be sequentially reduced, the top of the lower beam is provided with the second lower beam nut portions inwards, in described The lateral surface of bar is with the second external screw thread coordinated with the second lower beam nut portions, and stem cover during middle bar bottom is provided with second is described Stem cover forms the protuberance of bar outer rim in protrusion in second；The top of middle bar inwards be provided with second in stem nut portion, it is described on Bar bottom is provided with stem cover on second, and stem cover is set formed with the protuberance for protruding upper boom outer rim, the lateral surface of upper boom on second There is the 3rd external screw thread coordinated with stem nut portion in second.

12. the electric expansion bar group structure of self-shooting bar as claimed in claim 11, it is characterised in that：The lateral surface of the middle bar Top be provided with the second outside convex wall.

13. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：The power source is machinery The change-speed gearing group or rotating motor of transmission.

14. the electric expansion bar group structure of self-shooting bar as claimed in claim 1, it is characterised in that：Set in the control handle There are the switch for starting self-timer and the button for controlling power source.